JPH0210557A - Cassette holder - Google Patents

Abstract

PURPOSE:To prevent the deformation of a tape cassette and to attain correct positioning and insertion holding by supporting the three points of a cassette half with pressure. CONSTITUTION:On a top face side facing a bottom where a projected line part to enter a recessed line groove 20 is formed and a regulating projection piece to lock the front edge of a clogging plate 14 is provided on the rear edge side facing the inserting direction of a tape cassette 1, a pair of pressure supporting means to pressure- support both upper surface sides of a cassette half 4, and an engagement pressure- supporting means to engage a engagement concave part formed at the upper surface side center part of the cassette half 4 and to pressure-support the cassette half 4 are provided. Consequently, when the recessed line groove 20 of the clogging plate 14 is inserted to a projected line part 67 and the tape cassette 1 is insertion-held, the cassette half 4 is pressure-supported by a pair of the pressure-supporting means 68 on the both sides of the upper side, an engagement pressure-supporting means 71 engages the engagement concave part formed on the upper surface side central part, and the upper surface side central part of the cassette half 4 is pressure-supported. Thus, the tape cassette can be stably supported, and when the deformed tape cassette is inserted and held, the deformation is corrected are held.

Description

[Detailed description of the invention] The invention will be described in the following order.

A. Industrial field of application B0 Summary of the invention C0 Prior art 0 Problems to be solved by the invention 81 Means for solving the problems F0 Effect G. Example G-1 Tape cassette used in digital audio recorder (Figures 20 to 23) Schematic configuration of G-2 digital audio chip recorder (Figures 1 and 2) G-3 Cassette holder (Figures 1 to 6) G-4 Slide guide frame (Figures 1 to 6) 1, 2, and 5) G-5 Slide guide frame reciprocating operation mechanism (Fig. 1, 5 to 12) G-6 Tape cassette insertion/holding detection mechanism (Fig. 1, 2
(Fig. 6, Fig. 8, Fig. 13, and Fig. 14) Front cover opening mechanism of G-7 tape cassette (Fig. 2, Fig. 6)
, FIG. 8, FIG. 15, FIG. 16, and FIG. 17) G8 Tape cassette ejection mechanism (FIG. 1, FIG. 2, FIG. 7, FIG. 9, FIG. 18, and FIG. 19) G- 9 Tape cassette installation operation (Fig. 1, Fig. 5 to Fig. 11) G-10 Tape cassette removal operation (Fig. 1, Fig. 5)
(Figures 11 and 19) H1 Effect A of the Invention, Industrial Field of Application The present invention provides a tape assembly in which a closing plate for opening and closing the reel drive shaft insertion hole is movably attached to the bottom side of the cassette half. The present invention relates to a cassette holder into which a cassette is inserted and held, and which opens and closes the reel drive shaft by moving the closing plate and the cassette half relative to each other by inserting and holding the tape cassette or pulling it out.

B0 Summary of the Invention The present invention provides a position for closing a reel drive shaft insertion hole formed in the bottom of a cassette half in which a pair of tape reels wound with magnetic tape is rotatably housed, and a position for closing the reel drive shaft insertion hole. an engagement that is attached to the bottom side of the cassette half so as to be movable between positions where the shaft insertion hole is opened, and that locking protrusions formed on the cassette half side engage in the closed position and the open position, respectively; In a cassette holder into which a tape cassette is inserted and held, the tape cassette having a closing plate in which a concave groove with a hole is formed extending from the front end side to the middle part in the direction of movement, is provided on the upper surface side of the cassette half constituting the tape cassette. By pressing and supporting three points on both sides and the center of the top side, deformation of the tape cassette is prevented,
This enables accurate positioning and reliable insertion and retention, and also ensures that the tape cassette is mounted at a predetermined mounting position.

C1 Prior Art Conventionally, a digital audio recorder using a rotating magnetic head device has been used as a cassette tape recorder. In order to protect the magnetic tape as a recording medium, the tape cassette used in this tape recorder has a structure that allows the magnetic tape to be hermetically stored when the tape recorder is not attached to the tape recorder and the tape cassette is not in use. That is, in the tape cassette, the front side of the cassette half, which is the side from which the magnetic tape is drawn out, is covered with a front lid rotatably supported by the cassette half, and the reel drive shaft formed on the bottom of the cassette half is inserted. The hole is covered with a closing plate movably attached to the bottom of the cassette half to form a sealed structure.

By the way, the closing plate of the tape cassette is located on the bottom side of the cassette half between a position that closes the reel drive shaft insertion hole formed in the bottom of the cassette half and a position that opens the reel drive shaft insertion hole. The cassette half is provided with an engagement hole drilled in a groove formed from the front end side to a midway point in the direction of movement at the closed position and the open position. Movement is restricted by engagement of the locking protrusions biased toward the plate.

The tape cassette equipped with the closure plate configured as described above is mounted at a predetermined tape cassette mounting position in a magnetic recording/reproducing device such as a digital audio recorder by engaging the reel drive shaft with the tape reel in the cassette half. In order to do this, it is necessary to move the closing plate in advance to a position where the locking by the locking protrusion is released and the reel drive shaft insertion hole is opened.

Therefore, magnetic recording and reproducing devices such as digital audio recorders that use the tape cassette as a recording medium are equipped with a mechanism that opens the reel drive shaft insertion hole by moving the closing plate before installing the tape cassette in the mounting position. A tape cassette loading device is provided. As this type of tape cassette mounting device, the applicant of the present application has
A device constructed as shown in the specification and drawings of Japanese Patent Application No. 62-230597 has been proposed. In the tape cassette loading device shown in this specification and drawings, a cassette holder into which a tape cassette is inserted and held is provided with means for opening and closing the closing plate, and a means for opening and closing the closing plate is provided in connection with the operation of inserting and holding the tape cassette into the cassette holder. The reel drive shaft insertion hole is opened by relatively moving the cassette half and the closing plate.

That is, the cassette holder has a protrusion on the bottom plate that enters a groove formed in the closure plate, and a lock that locks the front edge of the closure plate on the rear end side opposite to the insertion direction of the tape cassette. A stop protrusion is provided. Then, when inserting and holding the tape cassette in the cassette holder,
The protrusion enters and engages the groove and pushes up the locking protrusion to release the engagement from the engagement hole, making the closing plate movable relative to the cassette half. In this state, the closing plate By locking the cassette half to the locking protrusion and further inserting the cassette half, the cassette half and the closing plate are moved relative to each other, and the reel drive shaft is opened.

By the way, in the above-mentioned cassette holder, the projection is inserted into the groove, and the locking protrusion is pushed against the biasing force to release the engagement from the engagement hole. It is necessary to perform relative movement between the plate and the cassette half. Therefore, the cassette holder is provided with means for pressing and supporting the tape cassette inserted into the cassette holder against the bottom plate side on which the protrusion is formed.

D0 Problem to be Solved by the Invention As described above, the cassette holder used in the tape cassette mounting device for mounting the tape cassette provided with the closing plate on the bottom side of the cassette half has a structure in which the above-mentioned protrusion is engaged. It only presses and supports both sides of the upper surface of the cassette half facing the matching concave grooves. Therefore, if the tape cassette is deformed, there is a possibility that the entire surface of the tape cassette cannot be pressed and supported with an even force. In addition, when only both sides of the top side of the tape cassette are supported by pressure, the center part of the tape cassette is slightly curved, causing a floating phenomenon from the bottom plate of the cassette holder, and the bottom covering the entire bottom side of the cassette half. There is a possibility that stable relative movement of the face plate with respect to the cassette half may not be possible.

Therefore, the present invention makes it possible to stably support the tape cart without causing any distortion or deformation on the cassette holder, and also makes it possible to stably support the tape cassette without causing any distortion or deformation. was proposed for the purpose of providing a cassette holder which can correct the deformation and hold the cassette half, and which enables reliable relative movement of the cassette half and the closing plate.

89 Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention is provided with a cassette half formed on the bottom surface of a cassette half in which a pair of tape reels wound with magnetic tape are rotatably housed. It is attached to the bottom side of the cassette half so as to be movable between a position where the reel drive shaft insertion hole is closed and a position where the reel drive shaft insertion hole is opened, and the cassette half side is movable between the closed position and the open position. A cassette into which a tape cassette is inserted and held, the tape cassette having a closing plate having a concave groove formed therein extending from the front end side to an intermediate part in the direction of movement, each having a groove formed with an engaging hole that is engaged with each engaging protrusion formed in the cassette. In the holder,
The upper surface side facing the bottom plate is formed with a protrusion that enters the groove, and is provided with a regulating protrusion that locks the front end edge of the closing plate on the rear end side facing the insertion direction of the tape cassette. a pair of pressing support means that press and support both sides of the upper surface of the cassette half; and an engagement pressing support that presses and supports the cassette half while engaging with an engaging recess formed in the center of the upper surface of the cassette half. This is done by providing means.

11 Effects The present invention allows the tape cassette to be inserted and held by entering the concave groove of the closing plate into the protrusion (and the cassette halves of the tape cassette are pressed on both sides of the upper surface by a pair of pressing support means). The engagement pressing support means engages with the engagement recess formed in the center portion of the upper surface side of the cassette half, and the center portion of the upper surface side of the cassette half is pressed and supported by the engagement pressing support means.

G. Embodiment The present invention will be described below with reference to an example in which the present invention is applied to a digital audio recorder equipped with a rotating magnetic head device.

G-1 Tape cassette used in digital audio recorder (Figs. 20 to 23) In order to explain a specific embodiment of the digital audio recorder to which the present invention is applied, the tape used in the tape recorder is shown below. Explain the cassette.

In order to completely protect the magnetic tape stored in the cassette half, the tape cassette has a structure that can be sealed when not in use, such as during storage when not attached to a tape recorder.

That is, the tape cassette 1 shown in FIG.
As shown in FIG. 3, a pair of tape reels 5.6 are rotatably supported in a cassette half 4 formed by butting and joining a pair of upper and lower halves 2.
The magnetic tape 7 is wound and stored over 6 spaces. The magnetic tape 7 is extended outward from the front side of the cassette half 4 through tape draw-out ports 8.9 formed on both sides of the front side of the cassette half 4, and is reeled from one tape reel 5 to the other tape reel. It is wrapped in 6 pieces.

Further, on the front side of the cassette half 4, a front cover 10 is rotatable in order to protect the magnetic tape 7 extending on the front side of the cassette half 4 when the tape cassette 1 is not installed in a tape recorder. Can be installed freely. As shown in FIG. 22, this front surface MlO is
A torsion coil spring 11, which is a biasing means wound around the cassette half 4, rotates and biases the magnetic tape 7 extending toward the front side of the cassette half 4 in the direction of closing the lid.

Furthermore, as shown in FIGS. 21, 22, and 23, holes are provided on the bottom side of the cassette half 4 when the tape cassette 1 is not installed in the tape recorder. Reel drive shaft insertion holes 12, 13
A closing plate 1 having a U-shaped cross section prevents dust from entering the cassette half 4 and protects the magnetic tape 7 by closing the lid.
4 is attached so as to be slidable in the front-back direction. A pair of projecting pieces 15, 15 are provided on the front edge of the closing plate 14,
As shown in FIG. 22, when the cassette half 4 is biased toward the front side in the direction of closing the reel drive shaft insertion hole 12, 13 by the torsion spring 16 attached to the cassette half 4 side, as shown in FIG. As shown, it is locked to the front side of the cassette half 4 to restrict the movement position of the closing plate 14. Incidentally, cutout recesses 17, 17 are formed at the lower edge of the front cover 10 corresponding to the protrusions 15, 15, which serve as escape parts when the cassette half 4 moves relative to the closing plate 14. .

Further, a pair of insertion holes 18 are provided on the main surface of the closure plate 14.
．． 1B is bored, and when this closing plate 14 is relatively moved to the rear of the cassette half 4, the hole 2 shown in FIG.
As shown by the dashed dotted line, the insertion holes 18 and 18 are aligned with the reel drive shaft insertion holes 12 and 13 formed in the bottom plate of the lower half 3, and the reel drive shaft provided on the tape recorder side is inserted into the cassette half 4. It is now possible to enter. Then, the closing plate 14 is moved forward to pull out the magnetic tape 7 formed on the front side of the cassette half 4 to the outside of the cassette half 4, and the tape drawer of the loading operation mechanism provided on the tape recorder side that performs the loading operation. When the lower surface of the space 19 facing the means is closed, as shown in FIG.
The insertion holes 18, 18 of 14 and the reel drive shaft insertion holes 12, 13 of the lower half 3 are shifted in position from each other, and these reel drive shaft insertion holes 12, 13 are closed by the main surface of the closing plate 14. .

Further, the closing plate 14 includes a closing plate 1 formed on the bottom plate of a cassette holder provided in a tape recorder, which will be described later.
A concave groove 20 is formed into which a protrusion serving as a lock releasing means for releasing the lock of the locking means 4 enters. The concave groove 20 is formed by opening the front edge side of the closing plate 14 over a midway portion in the front-rear direction, which is the moving direction of the closing plate 14.

In the concave groove 20, a closing plate 14 is inserted into the space 19 of the cassette half 4 and the reel drive shaft insertion hole 12.1.
The locking piece 2 provided on the cassette half 4 locks the closing plate 14 in the closed position where the space 19 and the reel drive shaft insertion holes 12 and 13 are opened.
An engagement hole 23 and an engagement notch 2 in which the first locking protrusion 22 engages
4 is drilled. The lock piece 21 is attached to the lower half 3
By forming a U-shaped groove in the bottom plate, the rear end portion is connected to the bottom plate of the lower half 3, and a hemispherical engagement protrusion 22 is integrally formed on the lower surface of the front end portion.

Then, as shown in FIGS. 21 and 23, the closing plate 1
4 is in the closed state, the locking protrusion 22 at the tip of the lock piece 21 engages with the engagement hole 23 provided in the closing plate 14, and the closing plate 14 is locked so that it does not move toward the open position. has been done.

Furthermore, inside the cassette half 4, the tape reel 5.6, which is rotatably supported within the cassette half 4, rotates inadvertently when it is not attached to the tape recorder, and the magnetic tape 7 wound thereon rotates inadvertently. As shown in FIG. 20, a reel lock lever 26 for preventing the reel from being loosened and damaged is extended in the width direction on the inner surface of the upper half 2.
The elongated holes 2B, 28 are engaged with a pair of slide guide pins 27, 27 set on the inner surface of the upper half 2, and the upper half 2 is supported slidably in the front and rear directions relative to the tape reel 5.6. The tape reel 5 is biased and attached to the 5° 6 side by a mock coil spring 29 attached to the inner surface. Then, by pressing the pressing piece 30.30 protruding from one side of the reel lock lever 26 against the outer peripheral surface of the upper end side of the tape reels 5, 6, the tape reel 5 is
．． 6 is locked so that it cannot rotate. Further, on both sides of the reel lock lever 26, there are movable operation arms 31 that extend in the front-rear direction on the side surface of the cassette half 4 and engage relatively with the rotating piece 10b of the front cover 10 when the front cover IO is opened. It is formed in such a way that it exists. And the front lid lO
When the cassette half 4 is rotated to open the front side of the cassette half 4 as shown in FIG. The reel lock lever 26 is moved in a direction away from the tape reel 5.6 against the biasing force of the torsion coil spring 29. This reel lock lever 2
By the movement operation of step 6, the pressure on the tape reels 5.6 by the pressing pieces 30.30 is released, and these tape reels 5.6 are released.
6 is free to rotate and the cassette half 4 of the magnetic tape 7 is
This makes it possible to extend the material outward.

Furthermore, on the upper surface side of the cassette half 4, the front cover 10
A rectangular engagement recess 32 is formed in the center in the left-right direction at a position closer to the side. This engagement recess 32 is
In a tape cassette loading device that uses a pull-in operating lever to pull the tape cassette l from a tape cassette insertable/removable position to a tape cassette mountable position, an engaging pawl formed at the tip of the blow-in operating lever engages. It is designed to help you obtain the desired results.

The tape cassette 1 configured as described above is inserted into the tape recorder main body via a cassette holder that is operated to move horizontally and vertically between a tape cassette insertion/removal position and a tape cassette mounting position, as will be described later. The tape cassette is installed at the above-mentioned tape cassette installation position.

By inserting and holding the tape cassette 1 into the cassette holder, the tape cassette 1 is inserted into the cassette half 4 and the closing plate 14.
The reel drive shaft insertion holes 12 and 13 allow for relative movement operation.
The opening operation is performed, and the front cover 10 is rotated by rotating the cassette holder to the tape cassette mounting position, opening the front side of the cassette half 4 and exposing the magnetic tape 7 to the outside. Make it ready for withdrawal.

G-2 Schematic configuration of digital audio tape recorder (Figures 1 and 2) A digital audio recorder equipped with a rotating magnetic head device to which the present invention is applied records the tape cassette 1 configured as described above. As shown in FIG. 1, FIG. 9, FIG. 2, FIG. 3, and FIG. The cassette holder 35 is supported in a reciprocating manner by a mechanical chassis 36 that constitutes the tape recorder main body, and is reciprocated by a drive motor 37 as described later to allow the cassette holder 35 to be inserted into and removed from the tape cassette 1. The reel drive shaft insertion hole 12.13 opened at the bottom of the tape cassette l allows the reel drive shaft 3 to be placed on the mechanical chassis 36.
8.39 is provided with a tape cassette mounting device comprising a slide guide frame 40 for vertically moving the cassette holder 36 at a corresponding second position.

Also, a reel drive shaft 38 to which the tape cassette l is attached.
．． As shown in FIG. 1, the magnetic tape 7 pulled out from the tape cassette 1 via the mechanical chassis 36 is placed on the side opposite to the tape cassette mounting position where the magnetic tape 39 is disposed.
A rotary magnetic head device 42 around which a magnetic head is wound is disposed. Between the tape cassette loading device and the rotating magnetic head device 42, magnetic tapes 7 from the tape cassette 1 are provided.
A pair of movable guide blocks 43 and 44 constituting a loading operation mechanism for pulling out the tape and winding it around the tape guide drum of the rotary magnetic head device 42 are provided. The magnetic tape 7 is hooked onto these moving guide blocks 43 and 44, and the magnetic tape 7 is placed on the tape guide drum of the rotating magnetic head device 42 at a predetermined angle, for example, about 90 degrees.
A tape guide roller 45 and an inclined guide pin 46 are installed to guide the tape to be wound over an angle range of 0°. The moving guide blocks 43 and 44 are connected to slide guide grooves 47 formed in the mechanical chassis 36.
．． 48, the tape guide roller 45 and the inclined guide bin 46 extend from a position facing the space 19 of the tape cassette 1 mounted at the tape cassette mounting position to a position to the side of the rotating magnetic head device 42. movement operation is performed. The moving operation of the moving guide blocks 43 and 44 is performed by rotationally driving two loading rings 49 and 49 disposed around the outer periphery of the rotary magnetic head device 42. That is, each of the above-mentioned moving guide blocks 43
．． 44 is connected to each loading ring 49, 49 by a connecting arm (not shown), and is moved by rotation of these loading rings 49, 49 by a loading motor 52. Note that each loading ring 49 , 49 is connected to the loading motor 52 through a connecting gear mechanism 53 and a connecting belt 54 to receive driving force.

Also, the tape cassette mounting position and the rotating magnetic head device 4
A magnetic tape 7 is inserted between the capstan shaft 55 and the capstan shaft 55.
A pinch roller 56 for driving the tape to travel at a constant speed, a tape guide support arm 57, a tension gear arm constituting a tension regulator (not shown), etc. are rotatably arranged. The pinch roller 56, the tape guide support arm 57, and the tension gear arm are rotated toward the tape cassette mounting position by the rotation of the loading rings 49, 49 that move the movable guide blocks 43 and 44, and the rotating magnetic head device 42. The movable guide block 43.4 is pivoted between the laterally pivoted positions.
4, the magnetic tape 7 in the tape cassette 1 is wound around the rotating magnetic head device 42, and a loading operation is performed on a predetermined tape running path on which the tape can run.

In addition, as shown in FIG. 2, at the tape cassette mounting position portion on the mechanical chassis 36 where the reel drive shafts 38 and 39 are disposed, there are tape cassette mounting detection switches 33 and 33 for detecting the mounting of the tape cassette 1. is installed.

G-3 Cassette Holder (Figs. 1 to 6) The cassette holder 35 constituting the tape cassette mounting device 41 described above is a cassette holder with open front and back sides so that the tape cassette 1 can be inserted and held therein. It is formed into a box shape. That is, the cassette holder 35
As shown in FIGS. 1 and 2, there is a bottom plate 60 on which the tape cassette 1 is placed, side plates 61.62 formed upright on both sides of the bottom plate 600, and side plates 61.62 arranged opposite to the bottom plate 60. A top plate 63 that is attached between
It is formed into a substantially box shape. A reel drive shaft entry notch 64 into which the reel drive shafts 38 and 39 located spaced apart from each other in the left-right direction enter is formed in the center of the front edge of the bottom plate 60, and a cutout 64 is formed in the center of the rear edge of the bottom plate 60. An inverted trapezoidal notch 65 is formed at both ends of the notch 65, and the projections 1 provided on the closing plate 14 of the tape cassette l are formed at both ends of the notch 65.
Sliding regulating protrusions 66 and 66 are formed in an upright manner to abut against the closing plates 5 and 15 to regulate the movement of the closing plate 14.

Furthermore, a pair of protrusions 67, 67 for pressing the lock piece 21 that locks the closing plate 14 of the tape cassette 1 is formed in a bulging position near the side plates 61, 62 of the bottom plate 60. ing.

Further, on the top plate 63, there are a pair of cassette pressing support pieces 68 and 68 that elastically press and support the tape cassette 1 inserted and held in the cassette holder 33, as shown in FIGS.
As shown in the figure, it is provided so as to extend in the insertion direction of the tape cassette 1. These cassette pressing support pieces 68.68 have U-shaped notches 69.6 in the top plate 63.
9 is formed integrally with a part of the upper surface plate 63 so that it can be elastically displaced. A tape cassette pressing protrusion 70.degree. 70 made of synthetic resin is attached to the tip of the cassette pressing support plate 68, 68 so as to project inward of the cassette holder 35.

The cassette pressing temporary support pieces 68, 68 are located near both sides of the upper surface of the tape cassette 1 inserted and held in the cassette holder 35, and close to the closing plate 1 of the tape cassette 1.
They are attached at symmetrical positions so as to evenly press the vicinity of the position corresponding to the groove 20.20 formed in the groove 4.

Furthermore, the central part of the back side of the upper surface plate 63 engages with an engagement recess 32 formed on the upper surface of the cassette half 4 of the tape cassette 1 inserted into the cassette holder 35 to set the tape force. An engagement press support piece 71 is provided to protrude and elastically press and support. This engagement pressing support piece 7
1 is formed to protrude from the rear side of the upper plate 63 by forming a pair of notches 72 and 72 on the rear side of the upper plate 63, as shown in FIG. It is considered possible. An engaging protrusion 73 made of synthetic resin that engages with the engaging recess 32 on the upper surface of the cassette half 4 is attached to its tip. This engagement protrusion 73 is in a state in which the closing plate 14 is locked to the sliding regulating protrusion 66, 66 and the cassette half 4 is moved relative to the closing plate 14 to open the reel drive shaft insertion holes 12, 13. When the tape cassette 1 is inserted and held in the cassette holder 35, the tape cassette 1 is attached at a position where it engages with the engagement recess 32.

In contrast to the cassette holder 35 formed as described above, the tape cassette 1 has a front cover 10 as shown in FIG.
Inserted from the side. Then, place the tape cassette 1 along the bottom plate 60 of the cassette holder 35 as indicated by the arrow A in FIG.
As the tape cassette 1 is inserted in the cassette holder 35, its insertion position in the left and right direction is regulated by the side plates 61 and 62 of the cassette holder 35, and as shown in FIG. Cassent pressing support piece 6
8 and 68. Here, further move the tape cassette 1 to the cassette holder 3 in the direction of arrow A in FIG.
5 When inserted inward, the protrusion 6 formed on the bottom plate 60
7.67 engages with the concave grooves 20° 20 formed in the closure vi, 14 of the tape cassette l, and locks the locking piece 21 to the cassette half 4 to lock the closure plate 14 to the cassette half 4. It is pushed up to release the locking of the closing plate 14 at the closing position where the reel drive shaft insertion holes 12 and 13 are closed. Following the unlocking of the blocking plate 14, the sliding regulating protrusions 66, 66 on the rear end side of the bottom plate 60 come into contact with the protrusions 15, 15 formed at the tip of the blocking plate 14, thereby preventing the blocking plate 14 from moving. regulate. When the tape cassette 1 is further inserted into the cassette holder 35 in the direction of the arrow in FIG. will be moved to. Due to this relative movement between the cassette half 4 and the closing plate 14, the reel drive shaft insertion hole 12,13 of the cassette half 4 and the closing plate 14 are
The reel drive shaft insertion holes 12 and 13 correspond to the insertion holes 18 and 18, and the reel drive shaft insertion holes 12 and 13 are opened. In this way, until the reel drive shaft insertion hole 12.13 is opened, the position where the cassette half 4 is inserted is the cassette holder 35 of the tape cassette 1.
into the reel drive shaft insertion hole 12.
, 13 and the reel drive shaft entry notch 64 formed in the bottom plate 60 correspond to each other, so that the reel drive shaft 38, 39 can be secured to the tape reel 5.6.

When the reel drive shaft insertion holes 12 and 13 are opened and the tape cassette 1 is inserted and held as described above, the engagement pressing support piece 71 pushes the engagement protrusion 73 at the tip as shown in FIG. The tape cassette 1 is pressed and supported by engaging with the engagement recess 32 on the upper surface of the cassette half 4. Therefore, the tape cassette 1 inserted into the cassette holder 31 is supported on both sides of the cassette half 4 by a pair of cassette pressing support pieces 68.6.
8, and the center portion in the left and right direction is pressed and supported by the engagement pressing support piece 71, and is held in the force center holder 35. As a result, the table cassette I-1 is prevented from floating near the center, and even if it is deformed, the deformation is corrected and the table cassette 1-1 is inserted and held in a stable state so that it is closely fitted onto the bottom plate 60. In particular, this cassette holder 35 has an engagement recess 32 on the upper surface of the cassette half 4 and an engagement protrusion 7 at the tip of the engagement pressing support piece 71.
Since the tape cassette 1 is held by relative engagement with the tape cassette 1, the insertion and holding position of the tape cassette 1 is accurately regulated, and the tape cassette 1
It is possible to securely hold the handle by preventing it from being pulled out.

As shown in FIGS. 2, 5, and 6, the cassette holder 35 for inserting and holding the tape cassette 1 as described above has a pair of slides protruding from the upper edge of each side plate 61, 62. Guide support pin 74.74 and 7
The cassette holder slide guide grooves 78, 78 and 79, 79 are inserted into and supported by a pair of cassette holder slide guide grooves 78, 78 and 79, 79, which are formed in a pair of supporting side plates 76, 77, which are respectively installed on both sides of the mechanical chassis 36 so as to stand upright.

By the way, each of the above-mentioned cassette holder slide guide grooves 7
8.78 and 79.79 are horizontal guide grooves 78a, 78a and 79a, 79 bored from the front end side of the support side plate 76.77 toward the middle part on the inner side, as shown in FIG.
a, and these horizontal guide grooves 78a, 78a and 79a.
, 79a, vertical guide grooves 78b, 78b and 79b, 79b are perforated vertically downward from the inner ends of the grooves 79a.
It is formed into an L-shape. Cassette holder slide guide groove 78.7 formed in this way
8 and 79.79 slide guide support pin 74.74
The cassette holder 35 is supported by inserting the slide guide support pins 74 and 75.
and 75.75 is the horizontal guide groove portion 78a of the cassette holder slide guide groove 78°78 and 79.79,
A first position where the tape cassette 1 can be inserted and removed by being guided in movement over a range from the front end side of the tape cassettes 78a, 79a, and 79a to the lower end side of the vertical guide grooves 78b, 78b, and 79b, and 79b. Reel drive shaft insertion holes 12 and 13 opened at the bottom of the tape cassette 1
and the reel drive shaft 34° 35 in the horizontal direction between the corresponding second positions, and the tape reels 5, 6 are moved along the drive shaft 34.
．． It is operated to move in the vertical direction to engage and disengage from 35.

G-4 slide guide frame (Figures 1, 2, and 5) Cassette holder slide guide fi78 as described above
．． 7) The holder 35 is moved horizontally and vertically guided by slide guides 78 and 79, 79, which are supported horizontally and reciprocally through the supporting side plates 76, 77. This is done by reciprocating the frame 40.

As shown in FIGS. 2 and 5, the slide guide frame 40 for moving the cassette holder 35 is connected to a rack gear 81 to which the driving force from the drive motor 37 is transmitted to one side of the connecting support plate 80. Rank plate 82 formed on the side
In the rack gear mounting, the side plate 83 is attached so as to hang down, and the slide side plate 84 is bent so as to hang down on the other side, forming a substantially U-shape. For mounting the rack gear, a pair of slide guide grooves 86, 86 are provided on the inner side of the side plate 83 facing the slide side plate 84, in which a pair of slide guide pins 85, 85 installed on one support side plate 76 are respectively engaged. A slide guide block 87 made of synthetic resin and perforated in the longitudinal direction is attached. Also, a pair of slide guide pins 88 are installed on the other support side plate 77 on the slide side $14.
A pair of slide guide grooves 89.88 are engaged with each other.
89 are horizontally bored in the longitudinal direction. The slide guide frame 40 is connected to the slide guide block 8.
The slide guide pins 85.85 are engaged with the slide guide grooves 86.86 bored in the slide side plate 84, and the slide guide pins 88, 88 are engaged with the slide guide grooves 89.89 bored in the slide side plate 84. support side plate 76.7
7, the slide guide grooves 86.86 and 89.89 are guided by the slide guide pins 85, 85 and 88.88, and are reciprocated in the horizontal direction with respect to the mechanical chassis 36. .

Further, the slide guide frame 40 has a pair of opening/closing arms 91. which are pivoted at the center by a pivot shaft 90 and can be opened and closed so that the slide guide frame 40 can maintain a horizontal state with respect to the mechanical chassis 36 and reciprocate reciprocatingly in parallel. 92 to the supporting side plates 76, 77, as shown in FIG. One opening/closing arm 91 has one end bent to the upper surface of the front end side of the other supporting side plate 77 as shown in FIG. The rack gear of the slide guide frame 40 is attached to the opening/closing guide shaft 95 which is freely pivoted and hung from the other end of the side plate 8.
A long hole 9 whose major axis is perpendicular to the direction of movement of the slide guide frame 40 is formed in a bent piece 96 formed on the upper edge of the slide guide frame 40.
7 and slide guide frame 40 as shown in FIG.
and the other support side plate 77, and the other opening/closing arm 92 has one end bent to the upper edge of the slide side plate 84 of the slide guide frame 40. An opening/closing guide shaft 100 is rotatably supported on a support shaft 99 and hung from the other end of the opening/closing guide shaft 100 on one support side plate 76.
A bent piece 101 formed by bending the upper edge of the front end side of the slide guide frame 40 is engaged with a long hole 102 whose long diameter is perpendicular to the direction of movement of the slide guide frame 40, thereby connecting the slide guide frame 40 and one of the supporting side plates. 76 are connected.

As described above, each one end side is supported on the fixed support shaft 94.99,
The opening/closing guide shaft 95, 100 on the other end side is connected to the long hole 97.102.
A pair of opening/closing arms 91 and 92 that are engaged with and attached to the
The one end pivoted on the fixed support shaft 94,99 is used as a fixed support, and the opening/closing guide shaft 95,100 is installed in the elongated hole 97°102.
The opening/closing operation is performed centering on the pivot 90 while slidingly guiding the opening/closing operation.

In this way, the supporting side plates 76.77
The slide guide frame 40 is connected to the fixed support shaft 94.
．． The reciprocating operation is performed parallel to the mechanical chassis 32 with the 99 side as a sliding reference.

A cassette holder 31 is supported on the slide guide frame 40, which is supported in a reciprocating manner with respect to the mechanical chassis 32, so as to be moved in the horizontal and vertical directions following the reciprocating movement of the slide guide frame 40. be done. That is, the cassette holder 31 has a first cassette holder 31 that allows the tape cassette 1 shown in FIGS. 1, 5, and 6 to be inserted and removed.
The reel drive shaft insertion hole 12.13 and the reel drive shaft 38.3 opened at the bottom of the tape cassette l from the position .
8 and 9 in the horizontal direction between the second positions shown in FIGS. 7 and 8, which correspond to FIGS.

Tape reel 5.6 as shown in Figures 10 and 11
It is supported by the slide guide frame 40 so that it can be moved in a vertical range to engage and disengage from the reel drive shaft 38, 39.

Therefore, as shown in FIGS. 2, 5, and 6, the slide guide block 87 and slide side plate 84 of the slide guide frame 40 are each provided with a pair of inclined cam grooves 105.
, 105 and 106, 106 are formed. The cassette holder 35 has slide guide grooves 72, 72. and slide guide support pins 68.68 and 73 inserted into 73.73
The tip of ゜73 is connected to the inclined cam grooves 105, 105 and 10.
6 and 106, it is supported by the slide guide frame 40 so that it can be moved in the horizontal and vertical directions as described above.

By the way, in the slide guide frame 40, the pair of opening/closing arms 91.92 are operated to open as shown in FIGS. 7 and 9, and the slide guide pins 85, 85 and 88. 1st in the range of 89.89
1 and 6, the cassette holder 31 is in the advanced position relative to the mechanical chassis 36, and the tape cassette 1 can be inserted and removed while the cassette holder 31 is moved forward in the direction of the arrow B in FIGS. 1 and 6. From the first position shown, the slide guide support bins 74, 74 and 75, 75 are guided to the cassette holder slide guide grooves 78, 78 and 79° 79, and are opened at the bottom of the tape cassette 1 inside the mechanical chassis 36. The reel drive shaft insertion holes 12, 13 and the reel drive shaft 34.35 are moved to the corresponding second position shown in FIGS. The reel drive shaft 34, 35 is lowered into engagement with the reel drive shaft 34, 35.

That is, the pair of opening/closing arms 91.92 are closed and moved forward relative to the mechanical chassis 36 with the slide guide pins 85.85 and 88.88 positioned at the inner ends of the slide guide grooves 86.86 and 89.89. When the slide guide frame 40 is in the moved position, as shown in FIGS. 5 and 6, the cassette holder 35 has slide guide support bins 74.47 and 75.75 aligned with the cassette holder slide guide grooves 78.78. and 79.79 in a first position located on the front end side.

Therefore, the inclined cam grooves 105, 105 and 106.1
06, when the slide guide frame 40 and the cassette holder 35 are located in the first position shown in FIGS. 1 and 6, the slide guide support bins 74.74 and 75.75 are engaged with the upper edge, The cassette holder 35 is
While being moved from this position to the second position as shown in FIGS. 7 and 8, the engagement state is maintained so that the slide guide frame 40 can be moved integrally with the slide guide frame 40. That is, the inclined cam grooves 105, 105 and 10
6,106, the cassette holder 35 is shown in FIGS. 7 and 8.
As shown in the figure, after reaching the second position, the slide guide frame 40 further moves in the forward direction of arrow B in FIGS. 7 and 8, and the slide guide support bins 74, 74, 75.
75 into the slide guide grooves 72.72 and 73.73.
The height range of the vertical guide grooves 72b, 72b and 73b, 73b is set so that the cassette holder 35 can be lowered to the tape cassette mounting position by being guided by the vertical guide grooves 72b, 72b and 73b, 73b. As shown in FIGS. 5 and 6, the slide guide block 87 and the slide side plate 84 are bored at a predetermined inclination angle from the upper edge to the lower edge.

The inclination angles of these inclined cam grooves 105, 105 and 106, 106 are the same as those of the vertical guide grooves 72b, 72b and 73.
b, the inclination angle corresponds to the hypotenuse of an isosceles triangle whose one side is the height of 73b, and the slide guide frame 40 is formed in the vertical guide groove portion 72b.

By moving forward by the height of 72b, 73b, and 73b, the cassette holder 35 can be lowered to the tape cassette mounting position.

Although not shown, on the lower edge of the front end side of the slide side plate 84 of the switch guide frame 40, there is a lid opening/closing arm 107 for opening and closing the opening/closing lid for opening and closing the tape cassette insertion/ejection opening formed on the front side of the outer casing. A cam surface 108 for opening/closing the lid opening/closing arm which is rotated is formed. The lid opening/closing arm 107 is rotatably supported by the other supporting side plate 77 and rotated by a tension spring 109 so that a retaining pin 107a protruding toward the proximal end is pressed into engagement with the cam surface 108. Forced. This lid opening/closing arm 107 is
As the slide guide frame 40 reciprocates, the engagement pin 107a moves on the cam surface 108 and is rotated, thereby opening and closing the opening/closing lid that opens and closes the tape cassette insertion/ejection opening.

(Hereinafter, blank space) G-5 Slide guide frame reciprocating operation mechanism (Figs. 1, 5 to 12) As described above, the slide is reciprocated with respect to the mechanical chassis 36 and operates to move the cassette holder 35. The guide frame 40 is reciprocated by a drive motor 37 attached to the lower edge of the mechanical chassis 36 as shown in FIG.

Between this drive motor 37 and the slide guide frame 40, the fifth
As shown in the figure, the worm gear 111 attached to the output shaft 110 of the drive motor 37 and the slide guide frame 40
The rack gears 81 of the rack plate 82 disposed on the outer side of the side plate 83 are connected by meshing with the intermediate connecting gear 112. As shown in FIG. 12, this intermediate connecting gear 112 is formed by coaxially and integrally forming a large-diameter constant-tooth gear 113 and a small-diameter pinion gear 114, and meshes the constant-tooth gear 113 with the worm gear 111. The pinion gear 114 is meshed with the rack gear 81 to connect the worm gear 111 and the rack gear 81.

By the way, as shown in FIG. 12, the rack plate 82 is attached to the side plate via a rack support plate 115 supported on the outer surface of the side plate 83.

The rack support plate 115 that supports the rank plate 82 has a pair of support pins 116, 116 planted in the side plate 83 inserted through engagement guide holes 117, 117 whose major diameters are in the longitudinal direction. The rank gear is mounted between a first spring locking piece 118 cut and formed from the side plate 83 and a second spring locking piece 119 bent and formed on one side of the upper edge of the rack support plate 115. FIG.
The rack gear mounting is connected and supported by the side plate 83 while being urged to move in the direction of arrow C in FIG. Note that the movement and biasing position of this rank support plate 115 is such that the rack gear is attached to the side plate 8.
This rank support plate 115 is attached to a third spring locking piece 122, which is cut and bent from the third spring locking piece 122 and locks one end of a second limiter spring 121 that biases the rack plate 82 to move as will be described later.
The rear end edge of a rectangular notch opening 123 cut out in the main surface of is latched and regulated.

The rack plate 82 is stacked on the rank support plate 115 by inserting retention guide holes 124, 124 whose major diameters are in the longitudinal direction into the distal ends of the support bins 116, 116 on which the rack support plate 115 is supported. It is supported by. Further, the rank plate 82 has a rectangular notch opening 82a formed in the main surface of the rack plate 82.
The rack support plate 115 is held in place by the second limiter spring 121 stretched between the third spring locking piece 122 protruding through the third spring locking piece 122 and the spring locking hole 125 formed in the rank plate 82. Slide guide frame 4 in the opposite direction to the movement biasing direction
The second spring 1 is biased to move in the direction of the arrow in FIGS. 5 and 12, which is the forward movement direction of 0.
21 on the movement urging direction side is connected to the rank support plate 1.
The rack gear attachment is connected to the side plate 83 via the rank support plate 115 by contacting a locking piece 127 formed by bending one end of the rack gear 115 .

Then, the drive motor 37 moves the slide guide frame 40 to the first position.
When rotationally driven to move in the forward direction of arrow E in FIG.
It is transmitted to the slide guide frame 40 via. Further, when the drive motor 37 rotates the slide guide frame 40 so as to move it in the backward direction of the arrow F in FIG. 121 and the slide guide frame 4
0.

By the way, starting and stopping of the drive motor 37 for reciprocating the slide guide frame 40 is carried out by using a switch operating piece 126 formed on the rear end side of the slide guide frame 40 on one side of the mechanical chassis 32 as shown in FIGS. This is performed by operating a return position detection switch 128 and a tape cassette installation position detection switch 129, which are installed as shown in FIG. Note that the return position detection switch 128
When the slide guide frame 40 is in the return position as shown in FIGS. 1, 5, and 6, which is located on the front end side of the mechanical chassis 36 that has moved the cassette holder 35 to the first position, Push operation element 1 with switch operation piece 126
28a is pressed, and the tape cassette mounting position detection switch 129 is located at the position where the slide guide frame 40 is located inward of the mechanical chassis 36 that has lowered the cassette holder 35 to the tape cassette mounting position. A push operation element 129a is attached at a position where it is pressed by the switch operation piece 126 when it is in the retracted position as shown in FIGS. 9, 10, and 11. Then, when the switch guide frame 40 is in the return position, the insertion and holding operation of the tape force set 1 into the cassette holder 35 is performed, and as will be described later, the switch guide frame 40 is
0 is moved slightly inward, and when the switch operation piece 126 releases the push operation element 128a of the return position detection switch 128, the drive motor 37 moves the slide guide frame 40 in the forward direction. Normal rotation drive starts. The drive motor 37 moves the slide guide frame 40 in the forward direction, lowers the cassette holder 35 to the tape cassette mounting position, and inserts and holds the tape cassette 1 into the cassette holder 35 as shown in FIG. When the tape cassette is installed at the tape cassette installation position, the switch operation piece 126 activates the tape cassette installation position detection switch 12 as shown in FIG.
It is detected that the press operator 129a of No. 9 has been pressed and reached the retracted position, and the driving of the drive motor 35 is stopped. At this time, the slide guide frame 40 has slide guide bins 85.85 and 88.88 as shown in FIGS.
As shown in the figure, they come into contact with the front ends of slide guide grooves 86, 86 and 89, 89, respectively, and movement in the forward direction is restricted. Further, when the slide guide frame 40 is in the retracted position where the cassette holder 35 is lowered to the tape cassette mounting position, when an eject button (not shown) provided on the main body of the apparatus is operated, the drive motor 37 is driven in reverse to guide the slide guide. The frame 40 is operated back in the direction of the return position.

Then, as shown in FIG. 5, it is detected by the switch operation piece 126 that the push operation element 128a of the tape cassette mounting position detection switch 128 has been pressed and reached the retracted position, and the driving of the drive motor 37 is stopped.

At this time, the slide guide frame 40 has slide guide pins 85, 85, and 88.88 in the slide guide grooves 86, 86, and 88, respectively, as shown in FIGS.
It comes into contact with the rear end of 9°89, and movement in the backward direction is restricted.

Then, as described above, after the slide guide frame 40 reaches the retracted position where the cassette holder 35 is lowered to the tape cassette mounting position and its movement is restricted, the drive motor 37 is immediately driven without being stopped. In this case, the rack plate 82 is integrated with the rack support plate 115 as shown by the imaginary line in FIG.
1 is moved relative to the slide guide frame 40 while being extended, and an excessive load on the slide guide frame 40 is prevented. Furthermore, after the slide guide frame 40 reaches the front end position of the mechanical chassis 36 that moved the cassette holder 35 to the first position and its movement is restricted, the drive motor 37 is immediately driven without being stopped. In this case, the rank plate 82 is moved relative to the slide guide frame 40 while stretching the second limiter spring 121, as shown by the imaginary line in FIG. 5, to prevent excessive load on the slide guide frame 40. be done. Further, after the slide guide frame 40 is moved to the retracted position or the front end position of the mechanical chassis 36 as described above, the drive motor 37 is further driven, and the rack plate 82 is moved relative to the slide guide frame 40. When the drive motor 37 is completely stopped, the rank plate 82 is urged toward the return position by the first or second limiter spring 121 or 122. As the rack plate 82 moves in the return direction, the intermediate connecting gear 112 is also rotated in the return direction, thereby preventing the so-called tightening phenomenon caused by the equitoothed gear 113 biting into the worm gear 111.

G-6 Tape cassette insertion/holding detection mechanism (Figures 1 and 2)
Figures 6 and 8.

(Figures 13 and 14) In addition to protecting the tape cassette 1, it also protects the mechanical parts such as the reel drive shafts 38 and 39 installed on the tape recorder side, ensuring that the tape cassette is securely attached to the mounting position. To perform the operation, the tape cassette l is opened with the closing plate 14 moved and the reel drive shaft insertion holes 12 and 13 opened.
A tape cassette insertion and holding mechanism is provided that allows the slide guide frame 40 to move after it is detected that the tape cassette is inserted and held in the cassette holder 35.

As shown in FIG. 2, this tape cassette insertion/holding detection mechanism is constructed by attaching a tape cassette insertion detection plate 131 to a position on the lower surface side of the connecting support plate 80 of the slide guide frame 40 and closer to the slide side plate 84 side. has been done. This tape cassette insertion detection plate 131 has a pressed operation part 132 on its tip side that is pressed on the upper surface side of the tape cassette 1 inserted into the cassette holder 35, and the slide guide frame 40 is tilted sideways to the cassette holder. When the mechanical chassis 36 is located at the front end side of the mechanical chassis 36 after the mechanical chassis 35 has been moved to the first position, the lock piece 134 engages with the lock portion 133 formed by cutting out the upper surface of the other supporting side plate 77 in a concave shape.
It is constructed by protruding. The pressed operation section 132 is constructed by attaching a semi-cylindrical member made of synthetic resin to the lower surface of the tip side of the tape cassette insertion detection plate 131. The tape cassette insertion detection plate 131 is fixed at its proximal end to the end of a temporary spring 137 attached to the lower side of the connection support plate 80 with a fixing screw 136, so that the pressed operation portion on the distal end side is fixed. 132 is urged to rotate around a support point by the fixing screw 136 so as to protrude inward of the cassette holder 35. Therefore, the tape cassette insertion detection plate 131
When the cassette holder 35 is at the front end side of the mechanical chassis 36 which has been moved to the first position, the lock piece 134 is pressed and biased as shown in FIG.
3, the movement of the slide guide frame 40 is held in a locked state.

By the way, when the slide guide frame 40 is locked and the cassette holder 35 is in the first position, the pressed operation part 132 of the tape cassette insertion detection piece 131 is inserted into the reel drive shaft insertion hole 12.13 in the cassette holder 35. The tape cassette 1 is placed in an open state and is pushed into a position where it is pressed by the inserted and held tape cassette 1. That is, the pressed operation section 132 is formed by a protrusion 15 formed on the distal end side of the closing plate 14 of the tape cassette 1, as shown in FIG.
, 15 of the cassette holder 35 to restrict the movement of the closing plate 14, and is moved relative to the closing plate 14 to form the reel drive shaft insertion hole. 12.degree. 13 is facing the position where the opened cassette half 4 enters.

Detection of insertion of the tape cassette I by the tape cassette insertion/holding detection device is performed as follows. That is, the slide guide frame 40 is connected to the mechanical chassis 36.
When the cassette holder 35 is in the front end position and moved to the first position as shown in FIG. 57. Concave groove 20 on 57
Insert from the front lid 10 side so as to engage 20,
When the protrusions 15, 15 at the tip of the closing plate 14 are inserted to the position where they come into contact with the slide regulating protrusions 66, 66 of the bottom plate 60, as shown in FIG. The pressed operation section 132 makes contact. Here, when the cassette half 4 is further inserted into the cassette holder 4 with respect to the closing plate 14 so as to open the reel drive shaft insertion hole 12° 13, the pressed operation portion 132 is pressed by the upper surface of the cassette half 4. When pressed, the tape cassette insertion detection piece 131 is rotated upward in the direction of arrow G in FIG. . Then, the slide guide frame 40 is unlocked and becomes ready for forward movement, and the forward movement of the slide guide frame 40 allows the cassette holder 35 to be moved toward the tape cassette mounting position. That is, when the tape cassette 1 is inserted and held in the cassette holder 35 with the reel drive shaft insertion holes 12 and 13 open, the slide guide frame 40 is allowed to move forward.

Front cover opening mechanism of G-7 tape cassette (Figures 2 and 6)
(Fig. 8, Fig. 2, Fig. 10, Fig. 1, Fig. 16, and Fig. 17)
A front cover opening mechanism is provided which opens the front surface M10 of the tape cassette 1 against the biasing force of the torsion coil spring 11 in connection with the loading operation of the tape cassette 1 into the tape cassette loading position. This front cover opening mechanism is the cassette holder 35
is moved from the first position to the second position by the slide guide frame 40, and when the slide guide frame 40 further moves forward to lower the cassette holder 35 to the tape cassette mounting position, the Front cover 10 of tape cassette 1 inserted and held in cassette holder 35
A pair of lid opening members 141 and 142 rotate the lid opening in the lid opening direction. These lid openings are member 14
1 and 142, as shown in FIGS. 2 and 6, are arranged on the mechanical chassis 36 side so as to face the cassette holder 35 which is moved to the tape cassette mounting position side.

The one lid-opening member 141 has a pressing operation portion 144 protruding from the tip side of the front lid 10 of the tape cassette 1 held by inserting it into the cassette holder 35 at the second position.
It is fixedly attached to the mechanical chassis 36 so as to face the lower end edge of one side. When the cassette holder 35 is lowered toward the tape cassette mounting position, the pressing operation portion 144 is brought into contact with the lower edge of the front cover IO, and the front cover 10 is twisted to resist the biasing force of the coil spring ll. to operate the rotation.

As shown in FIG. 15, the other lid opening member 142 is a pressing operation portion that contacts the lower edge on the other side of the front lid 10 of the tape cassette l and rotates the front lid lO. 145 is formed as an abbreviated plate-like body, and the base end side is planted on the mechanical chassis 36, and the mounting is supported by a pivot shaft 146 planted on the lower side of the plate 140. It is mounted so that it can rotate freely. This other lid is opened by member 142.
The cassette holder 35 is connected to a rotation operation plate 147 that is rotated by an inner slide guide support pin 75 that supports the mounting plate 140 when the cassette holder 35 is lowered. . That is, to open the other lid, the member 142 performs the rotation operation by inserting and engaging a rotation guide pin 148 protruding from the − side into a long hole 149 bored in the main surface of the rotation operation plate 147. It is connected to a plate 147, and when the rotation operation plate 147 is rotated, the rotation guide bin 148 is slide-guided into the elongated hole 149, thereby being rotated about the pivot shaft 146. . By the way, the rotation operation plate 147 is rotatably mounted with one side of the base end being pivoted on a pivot shaft 150 that is installed on the outer surface of the other support side plate 77 and on the upper edge side. It is being The rotation operation plate 147 is
One arm portion 151a wrapped around the pivot shaft 150 is engaged with a spring locking portion 152 bent at the upper edge of the side plate 140, and the other arm portion 151b is attached to the rotation operation plate 147. A torsion coil spring 151 engaged with a protruding spring pin 153 rotates in the direction of arrow H in FIG. It is dynamically energized. The rotation operation plate 147 that is rotationally biased in this way
As shown in FIG. 15, the other lid opening member 142 connected to the cassette holder 31 receives the rotational biasing force of the rotational operation plate 147 so that the pressing operation portion 145 on the tip side moves toward the lowering direction of the cassette holder 31. The front cover 10 of the tape cassette 1 extends toward the front cover 10 of the tape cassette 1.
It is biased to rotate so that it faces the lower edge of the. Then, the cassette holder 35 moves from the second position shown in FIG.
When the downward operation is performed toward the tape cassette mounting position shown in the figure, the rotated operation section 1 is moved by the slide guide support pin 75.
54 is pressed, and the rotation operation plate 147 is rotated in the opposite direction of arrow H in FIG. 15 against the rotation biasing force of the torsion coil spring 151. When this rotation operation plate 147 is rotated, the member 142 is moved to the rotation guide bin 14 to open the other lid.
8 is slid and guided in the elongated hole 149 and faces the rotating direction of the front cover 10 of the tape cassette l as shown by the arrow in FIG. The front cover IO is torsionally rotated by the pressing operation part 145 against the biasing force of the coil spring 11 to open the front side of the cassette half 4 as shown in FIGS. 10 and 17. do.

In this embodiment, one lid opening member 141 is fixedly arranged on the mechanical chassis 36, but the other lid opening member 141 is configured to be rotated by the cassette holder 35 like the member 142. There may be.

G-8 tape cassette ejection mechanism (Fig. 1, Fig. 2, Fig. 7, Fig. 9.

(FIGS. 18 and 19) In this tape recorder, when the tape cassette 1 is ejected by moving the cassette holder 35 into which the tape cassette 1 is inserted and held from the tape cassette mounting position side to the first position side, A tape cassette ejecting mechanism is provided that protrudes the tape cassette 1 so that it can be removed from the cassette holder 35.

As shown in FIGS. 1, 2, and 18, this tape cassette ejecting mechanism includes a cassette pressing operation section 156 located approximately at the center of the back side of the cassette holder 35, which faces the tape cassette insertion/ejection port 35a on the front side. The cassette pressing operation lever 157 is supported by the slide guide frame 40 so as to be freely reciprocated and facing each other, and the rotating guide bin 158 is rotatably supported by the mechanical chassis 36 and mounted on the cassette pressing operation lever 157. A rotary operation lever 160 is connected to the cassette pressing operation lever 157 by engaging the movable guide groove 159, and a cam follower 161 is pivotally supported at the tip of the cam, which is rotatably supported by the rotation operation lever 160. The cam lever 163 is rotatably biased in a direction to bring the follower 161 into pressure contact with a cam body 162 provided on the slide guide frame 40.

The cassette pressing operation lever 157 constituting the tape cassette ejection mechanism is configured as shown in FIG. As shown in FIGS. 2 and 18, a wide cassette pressing operation portion 156 is bent toward the front end to form a substantially T-shape. The cassette pressing operation lever 157 slides through a pair of slide guide grooves 164, 164 bored in the longitudinal direction so that the cassette pressing operation section 156 faces approximately the center in the left-right direction of the cassette holder 35. Guide frame 4
It is engaged with a pair of slide guide bins 165 and 165 set up at the center of the lower surface of the connecting support plate 80 of No.

The cassette pressing operation lever 157 includes a spring locking piece 166 bent at the rear end side of the connection support plate 80 and a spring locking piece 166 formed on the front end side of the cassette pressing operation lever 157. It is biased to move away from the cassette holder 35 in the direction of arrow J in FIGS. 1 and 18 by a tension spring 168 that is engaged between the holes 167. At this time, the cassette pressing operation unit 156 is held at a position spaced a predetermined distance from the front side of the tape cassette 1 so as not to press the tape cassette 1 inserted and held in the cassette holder 35.

Further, as shown in FIGS. 1 and 18, the rotation operation lever 160 includes a support piece 1 bent at the upper side of the rear end side of one of the support side plates 76 attached to the mechanical chassis 36.
The proximal end portion is pivotally supported on a support shaft 170 erected at 69 so as to be rotatable. And this rotation operation lever 1
60 receives the urging force of a tension spring 168 that urges the cassette pressing operation lever 157 to move, and the support shaft 170
The cassette holder 35 is biased to rotate in the direction of the arrow in FIG. 1 about the cassette holder 35 side. Therefore, the rotation operation lever 160 engages the rotation guide groove 159, which is formed as a long hole on the tip side, with the rotation guide pin 158, which is set in the middle part of the cassette pressing operation lever 157. As the cassette pressing operation lever 157 moves, the rotation guide bin 158 moves within the rotation guide groove 159, thereby rotating around the support shaft 170. be done.

Furthermore, the cam lever 163 has a cam follower 161 protrudingly engaged with an arc-shaped guide groove 171 bored in the middle of the rotation operation lever 160, and its base end is planted in the middle of the rotation operation lever 160. It is rotatably attached to the lower surface side of the rotary operation lever 160 by being pivotally supported on a support shaft 172. This cam lever 163 has a tension tensioning mechanism that is stretched between a spring locking piece 173 protruding from the distal end side of the rotary operating lever 160 and a spring locking piece 174 protruding from the midway side of the cam lever 163. A spring 175 urges the cam follower 161 to rotate in the direction indicated by the arrow in FIG.

By the way, the cam body 162 with which the cam follower 161 abuts and engages is formed as a molded body of synthetic resin, and as shown in FIG. 176. The cam body 161 includes the cam follower when the slide guide frame 40 moves forward to move the cassette holder 35 from the first position shown in FIG. 1 to the second position shown in FIG. 161 is pressed and only the cam lever 163 is rotated against the biasing force of the tension spring 175, and after the slide guide frame 40 reaches the position where the cassette holder 35 is moved to the second position. Furthermore, the cassette holder 35
A first cam surface 177 is formed that releases the abutting engagement in the process of moving forward to lower the tape force center toward the mounting position. This first cam surface 177 is formed as an inclined cam surface inclined at a predetermined angle in the reciprocating direction of the slide guide frame 40. Further, the cam body 162 includes:
When the slide guide frame 40 moves back to move the cassette holder 35, which has been lowered toward the tape cassette mounting position, to a second position that is higher than the tape cassette mounting position, the cam is activated. In the process of engaging the follower 161 under pressure and moving the cassette holder 35 back from the second position toward the first position, the cam lever 163 is rotated in the direction in which the tension spring 175 urges the cassette holder 35 to rotate. A second cam surface 178 is formed which is rotatably operated to rotate the rotary operation lever 160 toward the cassette holder 35 side in the direction of the arrow in FIG. 19 via the cam lever 163. This second cam surface 178 is formed to be perpendicular to the reciprocating direction of the slide guide frame 40, and after the cam lever 161 is rotated by a predetermined amount, the slide guide frame 40 moves the cassette holder 35 to the first position. The cam follower 161 is formed in such a length that the cam follower 161 is released from its engagement in the process of backward movement.

In the tape cassette ejecting mechanism configured as described above, when the slide guide frame 40 moves forward to move the cassette holder 35 from the first position to the second position, the first cam surface 177 engages with the cam lever. 163 is rotated against the biasing force of the tension spring 175. At this time,
Since the cam lever 163 is rotated by guiding the cam follower 161 to the arc-shaped guide groove 171, no rotation biasing force is applied to the rotation operation lever 160, and the rotation operation lever 160 is held in an inoperative position. , the cassette pressing operation lever 157 is also held in the inoperative position. Therefore, during the installation of the tape cassette 1 into the tape cassette installation position, the tape cassette l inserted and held in the cassette holder 35 is not pushed in the ejection direction.

In addition, in the process of the slide guide frame 40 moving back to move the cassette holder 35 from the second position toward the first position, the cam follower 161 moves to the second position as shown in FIGS. 7 and 19. Since the cam lever 163 is press-fitted to the cam surface 178 of No. 2, the cam lever 163 is rotated in the direction in which the tension spring 175 urges the cam lever 163 to move in the backward movement direction. In this way, cam lever 1
63 is rotated, the cam follower 161 is in pressure contact with the end of the arc-shaped guide groove 171 on the rotation direction side. The rotation operating lever 160 is rotated integrally with the cam lever 163 about the support shaft 170 toward the cassette holder 35 in the direction of the arrow in FIGS. 1 and 19. When the rotation operation lever 160 is rotated in this way, the engagement pin 158 is engaged with the rotation guide groove 159, and the cassette pressing operation lever 157, which is interconnected with the rotation operation lever 160, is pulled. The first resisting the biasing force of the spring 168
The cassette holder 35 is advanced inward in the direction of arrow N in FIG. Then, the cassette pressing operation part 156 on the tip side of the cassette pressing operation lever 157 presses the front lid 10 side of the tape cassette l inserted and held in the cassette holder 35, and the tape cassette 1 is moved to the tape cassette of the cassette holder 35. The cassette holder 35 is made to protrude toward the insertion/removal port 35a and can be removed from the cassette holder 35.

Note that when the tape cassette I is operated to protrude from the cassette holder 35, the cassette half 4 and the closing plate 14 are moved relative to each other, and the reel drive shaft insertion holes 12 and 13 are closed.

Mounting operation of G-9 tape cassette (FIGS. 1, 5 to 11) The operation of mounting the tape cassette 1 to the digital audio chip recorder configured as described above will be explained.

First, in order to install the tape cassette l, as shown in FIGS. 1 and 6, the slide guide frame 40 is moved to the front end side of the mechanical chassis 36, and the cassette holder 35 is enabled to insert and remove the tape cassette l. In this state, the tape cassette insertion detection plate 131 attached to the slide guide frame 40 is moved to the first position.
The lock piece 134 is engaged with a lock portion 133 formed on the other support side plate 77, and the slide guide frame 40 is in a locked state in which movement is prevented. The cassette holder 35, which is moved by the slide guide frame 40, is also held at the first position.

Here, the tape cassette 1 is inserted into the cassette holder 35 from the front lid 10 side through a tape cassette insertion slot formed in the outer casing (not shown) of the tape recorder. The tape cassette l inserted into the cassette holder 35 has protrusions 67 and 67 in the concave grooves 20 and 20 formed on the closing plate 14.
is engaged, and the locking of the closing plate 14 to the cassette half 4 is released, and the cassette is pressed and supported by the cassette pressing support pieces 68, 68 and the bottom plate 60. When the tape cassette 1 is further inserted into the cassette holder 35, the protrusion 15.degree. 15 on the distal end side of the closing plate 14 comes into contact with the slide regulating protrusion 66, 66, thereby restricting its movement. When the tape cassette 1 is further inserted into the cassette holder 35 while the movement of the closing plate 14 is restricted, the cassette half 4
is further moved inward with respect to the closing plate 14, and the insertion holes ts and ta formed in the closing plate 14 correspond to the reel drive shaft insertion holes 12 and 13 on the bottom surface of the cassette half 4, and these reel drive shaft insertion holes 12 , 13 are opened. At this time, the engagement protrusion 72 at the tip of the engagement pressing support piece 71 engages with the engagement recess 32 on the upper surface of the cassette half 4. The tape cassette 1 has a pair of cassette pressing support pieces 6 on both sides.
8.68, the center portion is pressed and supported by the engagement pressing support piece 71, and the insertion and holding position with respect to the cassette holder 35 is regulated by the relative engagement between the engagement protrusion 72 and the engagement recess 32. is retained. moreover,
When the cassette half 4 is inserted so that the engagement protrusion 72 engages with the engagement recess 32 as described above, the tape cassette insertion detection piece 131 is inserted by the cassette half 4.
The pressed operation section 132 is pressed. By this pressing operation of the pressed operation section 132, the tape cassette insertion detection piece 131 is pushed up and rotated against the biasing force of the leaf spring 137, and the locking piece 134 is disengaged from the locking section 133. Then, the slide guide frame 40 is unlocked and becomes movable. When this unlocking operation of the slide guide frame 40 is performed, the slide guide frame 40 is slightly moved in the forward movement direction, and the slide guide frame 40 that was provided in the slide guide frame 40 that was pressing the press operator 128a of the return position detection switch 128 is The slide operation piece 126 is separated, the pressing state of the push operation element 128a is released, and the drive motor 37 is released from the return position detection switch 128.
A signal to start is output.

Based on this signal, the drive motor 37 starts to be driven in the forward rotation direction.

Then, when the drive motor 37 starts rotating in the forward rotation direction, the slide guide frame 40 is moved forward in the direction of arrow B in FIG. 1, and the cassette holder 35 supported by the slide guide frame 40 is Integrally with the frame 40, the reel drive shaft insertion holes 12, 1 are inserted from the first position.
3 and the reel drive shaft 38, 39 are moved to the corresponding second position shown in FIGS. 7 and 8. From here, the drive motor 37 further drives in the normal rotation direction, and the slide guide frame 40
When the cassette holder 35 is further moved in the forward direction as shown in FIG. 9, the slide guide support pins 74, 74 and 75, 75 are moved into the inclined cam grooves of the slide guide frame 40 as shown in FIG. 105, 105 and 1
The tape cassette is lowered to the tape cassette mounting position while being guided by the tape cassettes 06 and 106. Then, the tape cassette 1 inserted and held in the cassette holder 35 is engaged with the tape reels 5 and 6 and the reel drive shafts 38 and 38, and the mounting position is regulated by the tape cassette positioning bins 180 and 180, and the tape cassette 1 is placed in a predetermined tape cassette. It is attached to the attachment position.

Then, the slide guide frame 40 is attached to the cassette holder 35.
When the tape cassette mounting position is lowered to the tape cassette mounting position, as shown in FIG. The drive in the rotation direction is stopped and the tape cassette loading operation is completed.

When the cassette holder 35 is lowered to the tape cassette mounting position, the pressing operation parts 144 and 145 of the pair of lid opening parts 141 and 142 come into contact with both sides of the lower edge of the front lid 10 of the tape cassette l. When the front cover 10 is rotated, the front side of the cassette half 4 is opened, and the magnetic tape 7 extending on the front side is exposed to the outside, so that it can be pulled out using the loading operation mechanism. It will be done.

Further, when the tape cassette 1 is installed, the tape cassette installation detection switch 3 is activated by the tape cassette 1.
3.33 is pressed, the attachment of the tape cassette 1 is detected, and the loading motor 52 is started to be driven.

As described above, when the front cover M10 is opened and the tape cassette 1 is loaded into the tape cassette mounting position, the moving guide blocks 43, 44, etc. that constitute the loading mechanism move from the tape cassette mounting position side. The magnetic tape 7 starts moving toward the rotating magnetic head device 42 side.
A loading operation is performed in which the tape is wound around the tape guide drum of the rotary magnetic head device 42 and pulled out so that the tape can travel along a predetermined tape running path. When this loading operation is completed, the tape recorder becomes ready to record and/or reproduce a predetermined information signal.

G-10 tape cassette ejection operation (Fig. 1, 5)
(FIGS. 11 and 19) The operation of removing the tape cassette l, which is mounted at a predetermined tape cassette mounting position as described above, from the tape recorder will be described.

To eject the tape cassette 1, first operate an ejector provided on the main body of the apparatus. When this eject button is operated, the loading mechanism is operated, and the magnetic tape 7 that has been pulled out to a predetermined tape running path is pulled into the cassette half 4. Following this pulling-in operation of the magnetic tape 7, the drive motor 37 is driven in the reverse direction. Then, the slide guide frame 40 starts to move in the backward movement direction, and the cassette holder 35, which had been lowered to the tape cassette mounting position, is raised to the second position shown in FIG. When the cassette holder 35 is raised, the front cover 10 of the tape running path (1) is rotated toward the return position by the torsion coil spring 11, thereby closing the front side of the cassette half 4.

When the slide guide frame 40 further moves in the backward movement direction after the cassette holder 35 has been raised to the second position,
The cam follower 1 is attached to the second cam surface 178 of the cam body 162.
The cam lever 163 that engages the tension spring 1
75, the rotation operation lever 160 is rotated toward the cassette holder 35 in the direction of the arrow in FIG. As the rotation operation lever 160 rotates, the cassette pressing operation lever 157 is advanced inwardly in the cassette holder 35 in the direction of arrow N in FIG. 19 against the biasing force of the tension spring 168, thereby pressing the cassette. The tape cassette 1 inserted and held in the cassette holder 35 is pressed by the operating section 156 . When the tape cassette 1 is pressed in this way, the cassette half 4 disengages the engagement recess 32 on the top surface and the engagement protrusion 72 at the tip of the engagement pressing support piece 71, while the cassette holder 35 is moved. The tape cassette is moved to the side of the tape cassette insertion/ejection opening 35a. Then, the cassette half 4 and the closing plate 14 move relative to each other, and the reel drive shaft insertion hole 12, 13 is in an initial state closed. Here, the tape cassette 1 is further pressed and operated by the cassette pressing operation section 156, so that the tape cassette 1 is projected from the tape cassette insertion/ejection opening 35a, and at least a part of it is pushed out of the outer casing through the tape cassette throat insertion opening formed in the outer casing. The cassette holder 35 is in a state where it protrudes toward the side, and is in a state where it can be removed from the cassette holder 35.

Then, the slide guide frame 40 is attached to the cassette holder 35.
When the switch is moved back to the first position shown in FIGS. 1 and 6, the switch operation piece 126 presses the push operation element 128a of the return position detection switch 128 as shown in FIG. , it is detected that the slide guide frame 40 has reached the return position, and the driving of the drive motor 37 in the reverse direction is stopped, and the operation for taking out the tape cassette l is completed.

Note that when the slide guide frame 40 further moves in the backward movement direction after the cassette pressing operation lever 157 has been moved enough to project the tape cassette 1 from the cassette holder 35, the second cam surface of the cam follower 161 The 4% contact with 178 is released. When the cam follower 161 is released, the cassette pressing operation lever 157 is returned to the initial position shown in FIG. 1 in which it is retracted relative to the cam holder 35 under the urging force of the tension spring 168.

H1 Effects of the Invention In the present invention, when the tape cassette is inserted and held by inserting the concave groove of the closing plate into the protrusion, the cassette half of the tape cassette is pressed against both sides of the upper surface by a pair of pressing support means. The engagement pressing support means engages with the engagement recess formed in the center portion of the upper surface side, and the center portion of the upper surface side of the cassette half is pressed and supported by this engagement pressing support means. It is possible to stably support the cassette on the cassette holder without causing distortion or deformation, and if a deformed tape cassette is inserted and held, the deformation can be corrected and held, and the cassette A locking holder can be provided that enables reliable relative movement of the half and the closing plate.

Since the tape cassette is held in close contact with the bottom plate of the cassette holder in a stable state, reliable mounting detection can be achieved by the tape cassette mounting detection means disposed at the tape cassette mounting position.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a digital audio tape recorder to which the present invention is applied, in which the cassette holder is in the first
FIG. 2 is an exploded perspective view showing the tape cassette loading device of the tape recorder. FIG. 3 is a plan view showing a state in which the tape cassette is inserted into the cassette holder constituting the tape recorder, and FIG. 4 shows a state in which the tape cassette is inserted and held in the cassette holder. FIG. FIG. 5 is a left side view of the cassette holder in the first position, and FIG. 6 is a right side view thereof. FIG. 7 is a plan view of the cassette holder moved to the second position, and FIG. 8 is a right side view thereof. FIG. 9 is a plan view of the innermost position of the slide guide frame, FIG. 10 is a right side view of the cassette holder moved to the tape cassette mounting position, and FIG.
The figure is its left side view. FIG. 12 is an exploded perspective view of the reciprocating operation mechanism for the slide guide frame. 13 and 14 are schematic side views showing the tape cassette insertion/holding detection mechanism. FIG. 13 shows the tape cassette insertion operation state and the slide guide frame is locked, and FIG. 14 shows the tape cassette insertion/holding detection mechanism. This shows the cassette insertion detection state and the unlocked state of the slide guide frame. 15, 16 and 17 show the front lid opening mechanism of the tape cassette, FIG. 15 is a perspective view showing the state before operation, and FIG. 16 is a rear view thereof. , FIG. 17 is a perspective view showing the front cover in a closed state. FIG. 18 is an exploded perspective view of the tape cassette ejecting mechanism from the bottom side, and FIG. 19 is a plan view showing a state in which the tape cassette is ejected from the cassette holder. 20 to 23 show a tape cassette used in a digital audio chip recorder, in which FIG. 20 is a perspective view from the top when not in use, and FIG. 21 is a bottom perspective view when not in use. It is a perspective view from the side, and the 22nd
This figure is a perspective view with the front cover opened, and FIG. 23 is a bottom view with the closing plate closing the reel drive shaft insertion hole. 1... Tape cassette 4... Cassette half 5.6... Tape reel 12.13... Reel drive shaft insertion hole 14... Closure plate 18... Closure plate insertion hole 20... Recessed groove 22...locking protrusion 35...cassette holder 60...bottom plate 66.66...sliding regulating protrusion 67.67...projection 68.68...cassette pressing support Piece 71... Engagement pressing support piece Fig. 3 Fig. 4 Sliding rod F. Main support for the bottle tn4 yen - profit margin Fig. 12 Sliding rod Crushing lock rod Fig. 13

Claims (1)

[Scope of Claims] A position that closes a reel drive shaft insertion hole formed in the bottom of a cassette half in which a pair of tape reels wound with magnetic tape is rotatably housed, and a position where the reel drive shaft insertion hole is inserted. An engagement hole is attached to the bottom side of the cassette half so as to be movable between positions where the hole is opened, and is engaged with a locking protrusion formed on the cassette half in the closed position and the open position, respectively. In a cassette holder into which a tape cassette is inserted and held, the tape cassette is inserted and held, and the tape cassette has a blocking plate in which a groove is formed from the front end side to a midway point in the direction of movement, and a protrusion that enters the groove is formed. , a pair that presses and supports both sides of the upper surface side of the cassette half on the upper surface side facing the bottom plate, which is provided with a regulating protrusion for locking the front edge of the closing plate on the rear end side facing the insertion direction of the tape cassette. A cassette holder comprising: a pressing support means; and an engaging pressing support means that engages with an engaging recess formed in the center of the upper surface of the cassette half and presses and supports the cassette half.