JPH0210560A - Tape cassette loading device - Google Patents

Abstract

PURPOSE:To attain a stable reciprocating motion operation of a slide guide frame by absorbing the dislocation of a motion in the lateral direction of a slide guide frame with an open/close arm mechanism. CONSTITUTION:When driving force from a driving means is transmitted through a linked gear mechanism 211 provided on one side of a slide guide frame 40 to a slide guide frame 40, the slide guide frame 40 is reciprocating-motion- operated for a mechanical chassis. When the slide guide frame 40 is reciprocating-motion-operated, an open/close arm mechanism 191 is opened/ closed. At such a time, first and second open/close arms 91 and 92 constituting the open/close arm mechanism 191 are opened/closed while a movable fulcrum is being variably dislocated with a fixed fulcrum side as an open/close reference point. As a result, the slide guide frame 40 is reciprocating-motion-operated with the fixed fulcrum side of the above open/close arms 91 and 92 as a reference. Thus, play in the direction orthogonal to the reciprocating direction of the slide guide frame is absorbed, and the stable reciprocating motion operation is executed.

Description

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

A. Field of industrial application B9 Summary of the invention C8 Prior art 0 Problems to be solved by the invention 80 Means for solving the problems F. Effect G. Embodiment G-1 Tape used in digital audio tape recorder Cassette (Figures 20 to 23) Schematic configuration of G-2 digital audio tape recorder (Figures 1 and 2) G-3 Cassette holder (Figures 1 to 6) G-4 Slide guide frame and Support mechanism for the slide guide frame to the mechanical chassis (Fig. 1).

(Figs. 2 and 5) G-5 Slide guide frame reciprocating operation mechanism (Fig. 1, 5, 5 to 12) G-6 Tape sheath insertion and holding detection mechanism (Figs.
, 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) G-8 tape cassette ejection mechanism (Fig. 1, Fig. 2, Fig. 7)
(Fig. 9, Fig. 18, and Fig. 19) G-9 tape cassette mounting operation (Fig. 1).

Figures 5 to 11) G-10 tape cassette ejecting operation (Figures 1 and 5)
(Figures 11 and 19) H6 Effect A of the Invention, Industrial Field of Application The present invention provides a method for moving the cassette holder into which a tape cassette is inserted and held in the horizontal and vertical directions. The present invention relates to a tape cassette mounting device that is applied to a magnetic recording/reproducing device such as a cartridge-type tape recorder, in which a tape cassette inserted and held in a tape cassette is mounted at a predetermined tape cassette mounting position.

B1 Summary of the Invention The present invention provides a pair of first and second opening/closing devices that are pivotally supported to be openable and closable between a mechanical chassis and a slide guide frame that vertically movably supports a cassette holder into which a tape cassette is inserted and held. Interpose an opening/closing arm mechanism consisting of an arm,
A tape cassette mounting device in which the slide guide frame is reciprocatably supported on the mechanical chassis, and each of the first and second opening/closing arms constituting the opening/closing arm mechanism is
By supporting the end sides via fixed fulcrums on the mechanical chassis and slide guide frame, respectively, and supporting the other end sides via movable fulcrums on the mechanical chassis and slide guide frame, respectively, the slide guide frame can be attached to an example side of the slide guide frame. When the slide guide frame is reciprocated by transmitting the driving force from a drive means such as a drive motor, the shift of the slide guide frame in the left and right direction is compensated for by an opening/closing mechanism interposed between the mechanical chassis and the slide guide frame. The opening/closing arm mechanism is composed of first and second opening/closing arms that are freely pivoted, and the other ends of the opening/closing arms are movable fulcrums, and the slide guide frame is capable of stable reciprocation. This makes it possible to operate the slide guide frame in a reciprocating manner, thereby simplifying the mechanism for reciprocating the slide guide frame.

C1 Prior Art Conventionally, the cassette holder is moved horizontally and vertically by a drive motor reciprocating a slide guide frame that vertically supports a cassette holder into which a tape cassette is inserted and held. A tape cassette loading device has been proposed and put into practical use, which loads a tape cassette inserted and held in the cassette holder into a predetermined tape cassette loading position in a recording/reproducing device such as a tape recorder or a video tape recorder.

As this type of tape cassette attachment, JP-A-63-23
A method as disclosed in Japanese Patent No. 9646G has been proposed.

The tape cassette mounting device disclosed in this publication supports a cassette holder in which a tape cassette is held so that it can move up and down, and has worm gears and rack gears on both sides of a support board as a moving body that is supported so as to be able to reciprocate with respect to a mechanical chassis. A driving force transmission mechanism composed of a plurality of gears is provided, and the driving force of the drive motor is transmitted to these driving force transmission mechanisms to operate the movable body in reciprocating motion and to operate the cassette holder in vertical motion. The tape cassette is configured to be mounted at a predetermined tape cassette mounting position.

D0 Problem to be Solved by the Invention By the way, as described above, the driving force from the drive motor is transmitted to the driving force transmission mechanism provided on both sides of the movable body that moves the cassette holder to operate the movable body in reciprocating motion. According to the tape cassette loading device of the double-sided drive type, the movable body can be reciprocated stably, but since the driving force transmission mechanism composed of a plurality of gears is arranged on both sides of the movable body, The mechanism becomes complicated. Furthermore, if a phase shift occurs in the rotations of the gears that constitute the driving force transmission mechanisms on both sides, it becomes impossible to drive both sides of the movable body synchronously, making it impossible to perform stable reciprocating operations.

Therefore, the present invention achieves stable reciprocating operation of a slide guide frame that vertically movably supports a cassette holder into which a tape cassette is inserted and held, and simplifies the drive mechanism for reciprocating the guide frame of the above-mentioned style 1. This was proposed for the purpose of providing a tape cassette mounting device that can be used in various ways.

89 Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention provides a mechanical chassis and a slide guide frame that supports a cassette holder into which a tape cassette is inserted and held so as to be movable up and down with respect to the mechanical chassis. and a first and second opening/closing arm which are pivotally supported to be openable and closable, and the first opening/closing arm has one end rotatably supported on the mechanical chassis via a fixed fulcrum, and the other end pivoted to the mechanical chassis. The second opening/closing arm is rotatably supported by the guide frame via a movable fulcrum, one end of which is rotatably supported by the slide guide frame via a fixed fulcrum, and the other end is rotatably supported by the mechanical chassis via a movable fulcrum. an opening/closing arm mechanism that is rotatably supported through the opening/closing arm mechanism and reciprocally supports the slide guide frame with respect to the mechanical chassis by opening/closing operations of the first and second opening/closing arms; and an example side of the slide guide frame. and a drive means connected to the slide guide frame via a coupling gear mechanism for reciprocating the slide guide frame.

F0 action The present invention provides that when the driving force from the driving means is transmitted to the slide guide frame through a connecting gear mechanism provided on one side of the slide guide frame, the slide guide frame reciprocates with respect to the mechanical chassis. Be manipulated.

When the slide guide frame is reciprocated, the opening/closing arm mechanism opens and closes. At this time, the first and second opening/closing arms constituting the opening/closing arm mechanism are opened/closed by movably displacing the movable fulcrum with the fixed fulcrum as the opening/closing reference point. As a result, the slide guide frame is operated to reciprocate with reference to the fixed fulcrum side of the opening/closing arm.

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 A tape cassette used in the digital audio tape recorder (FIGS. 20 to 23) In order to explain a specific embodiment of the digital audio tape recorder to which the present invention is applied, the tape cassette used in the above-mentioned tape recorder Explain tape cassettes.

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 l is
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 outwardly on the front side of the power center half 4 through tape outlet ports 8 and 9 formed on both sides of the front side of the cassette half 4, and is reeled from one table 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. It can be installed freely. As shown in FIG. 22, this front surface 1fE10 is
A torsion coil spring 11, which is a biasing means wound around the cassette half 4, rotates and biases the cassette half 4 in the direction of closing the lid, covering the 6n air tape 7 extending on the front side.

Furthermore, as shown in FIGS. 21, 22, and 23, a hole is provided on the bottom side of the cassette half 74 when the tape cassette 1 is not installed in the tape recorder. Reel drive shaft insertion hole 12.13
A closing plate 1 having a U-shaped cross section prevents dust from entering into the cassette half 4 and protects the magnetic chip 17 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 blocking plate 14,
As shown in FIG. 22, when the cassette half 4 is biased toward the front side in a direction that closes the reel drive shaft insertion holes 12 and 13 by the torsion spring 16 attached to the cassette half 4 side, as shown in FIG. As shown, the movable position of the closing plate 14 is regulated by being engaged with the front side of the cassette bar 74. Note that four notches 17, 17 are formed at the lower edge of the front surface MIO corresponding to the protrusions 15, 15, which serve as escape parts when the cassette half 4 moves relative to the closing plate I4.

Further, a pair of insertion holes 18 are provided on the main surface of the closure plate 14.
．． 18 is bored, and when the closing plate 14 is relatively moved to the rear of the cassette half 4, the hole 2 shown in FIG.
As shown by the dotted line, this insertion hole 18.1B is aligned with the reel drive shaft insertion hole 12.13 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 and the magnetic tape 7 formed on the front side of the cassette half 4 is pulled out to the outside of the cassette half 4.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 I9 facing the means is closed as shown in FIG. 21, the closing plate 14
The insertion holes 18, 18 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.

Furthermore, the closure Fi 14 has a concave line into which a protrusion serving as a lock release means for releasing the lock of the lock plate 14 formed on the bottom plate of a cartridge holder provided in a tape recorder, which will be described later, enters. A groove 20 is formed. The concave groove 20 is formed by closing 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 hole 12.13 are closed and in the open position where the space 19 and the reel drive shaft insertion hole 12.
A retaining hole 23 and an engaging notch 2 with which the locking protrusion 22 of No. 1 engages
4 is drilled. The lock piece 21 is attached to the lower half 3
By forming a U-shaped cut groove in the bottom plate, the rear end portion is connected to the bottom plate of the lower half 3, and a hemispherical retaining 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 retaining 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 being injured is extended in the width direction on the inner surface of the upper half 2. The elongated holes 28, 28 are engaged with a pair of raised slide guide pins 2727, so that the tape reels 5, 6 are slidably attached to the tape reels 5, 6 in the front-rear direction. This reel long lever 26 is the upper half 2
It is urged to move toward the tape reels 5 and 6 by a torsion coil spring 29 attached to the inner surface of the tape reels 5 and 6. Pressing pieces 30, 3 protruding from an example of the reel lock lever 26
0 to the upper end outer peripheral surfaces of the tape reels 5 and 6, the tape reels 5 and 6 are lengthened so as not to rotate. Further, on both sides of the reel lock lever 26, when the front cover IO is opened, there are rotating pieces 10 of the front cover 10.
b6 A movable operation arm 31 that engages with the cassette half 4 is formed on a side surface of the cassette half 4 so as to extend in the front-rear direction. When the front cover 10 is rotated 1M to open the front side of the cassette half 4 as shown in FIG. moved forward,
The reel lock lever 26 is moved in a direction away from the tape reels 5 and 6 against the urging force of the torsion coil spring 29. As a result of this movement of the reel opening lever 26, the pressure on the tape reels 5.6 by the pressing pieces 30.30 is released, and these tape reels 5.6 are free to rotate and move the magnetic tape 7 outward from the cassette half 4. It is possible to extend the

Further, on the upper surface side of the cassette half 4, the front surface I[1
A rectangular engagement recess 32 is formed in the center in the left-right direction at a position closer to the 0 side. This engagement recess 32 is formed at the tip of the retracting operation lever in a tape cassette loading device that uses the retracting operation lever to pull the tape cassette 1 from a tape cassette insertable/removable position to a tape cassette mountable position. This is provided so that the engaging claw can engage with the engaging claw.

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 l into the cassette holder, the tape cassette l is inserted into the cassette half 4 and the closing plate 14.
Reel drive shaft insertion hole 12.13
The opening operation is performed, and the front MIO is rotated by rotating the force center 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 (FIGS. 1 and 2) A digital audio tape 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. 2, FIG. 3, and FIG. The cassette holder 35 is movably supported and also reciprocably supported on the side of the mechanical chassis 3G that constitutes the tape recorder main body, and is reciprocated by a drive motor 37 as described later to move the cassette holder 35 to the tape cassette l. the reel drive shaft insertion holes 12 and 13 opened in the bottom of the tape cassette 1, and the reel drive shaft 3 positioned so as to stand up 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.

In addition, the reel drive shaft 38 to which the tape force separator) 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 l 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 wound around the tape guide drum of the rotating magnetic head device f42 at a predetermined angle, for example, over an angular range of about 90°. A tape guide roller 45 and an inclined guide pin 46 are installed to guide the tape. And the said moving guide block 43.44
is the slide guide groove 4 formed in the mechanical chassis 36.
7. Guided by 48, the tape guide roller 45
The inclined guide bin 46 is moved between a position facing the space 19 of the tape cassette 1 mounted at the tape cassette mounting position and a position to the side of the rotary magnetic head device 42. The moving operation of the moving guide broncks 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 4
3.44 are connected to each loading ring 49, 49 by a connecting arm (not shown), and these loading rings 49, 49 are rotated by a loading motor 52 to be moved. 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.

In addition, the tape force 7 soto device position and the rotating magnetic hend device 4
2IXFI is rotatably provided with a pinch roller 56 that is pressed onto a capstan shaft 55 to drive the magnetic tape 7 to travel at a constant speed, a tape guide support arm 57, a ten-leg gear arm that constitutes a tension regulator (not shown), and the like. There is. The pinch roller 56, the tape guide support arm 57, and the tension gear arm are connected to the loading ring 49.4 that moves the moving guide block 43 and 44.
9, the moving guide block 4 is rotated between a position rotated toward the tape cassette loading position side and a position rotated toward the rotating magnetic head device 42 side.
With the movement of 3.44, 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.

As shown in FIG. 2, at the tape cassette attachment position on the mechanical chassis 36 where the reel drive shafts 38 and 39 are disposed, there is a tape force attachment detection switch 33. which detects attachment of the tape cassette 1. 33 are arranged.

G-3 Cassette Holder (Figs. 1 to 6) The cassette holder 35 constituting the above-mentioned tape force center mounting device 41 has its front and back sides open so that the tape cassette l can be inserted and held therein. It is formed into a roughly box shape. That is, the force center holder 35
As shown in FIGS. 1 and 2, there is a bottom plate 60 on which the tape cassette I is placed, side plates 61.62 formed upright on both sides of the bottom plate 60, and side plates 61.62 arranged opposite to the bottom plate 60. A top plate 63 that is attached between 62 and 62.
It is formed into a substantially box shape. A reel drive shaft entry notch 64 into which the reel drive shafts 38 and 39, which are 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 in the center of the rear edge. An inverted trapezoidal notch 65 is formed at both ends of the notch 65, and the protrusions 1 provided on the closing plate 14 of the tape cassette 1 are provided 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.

Further, a pair of protrusions 67, 67 are formed in a bulging manner at positions closer to the side plates 61, 62 of the bottom plate 60 for pressing the lock piece 21 that locks the closing Fi 14 of the tape cassette 1. There is.

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 l. These cassette pressing support pieces 68.68 have 0-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 projection 70.70 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 plate 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 are located in grooves 20.20 formed in the closing plate 14 of the tape cassette l. They are attached at symmetrical positions so as to press evenly near the corresponding positions.

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 elastically hold the tape cassette 1. An engaging press support piece 71 is provided to project and support the press. 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 end 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 hole 12.13. When the tape cassette l is inserted and held in the cassette holder 35, the tape cassette l is attached at a position where it engages with the engagement recess 32.

With respect to the cassette holder 35 formed as described above, the tape cassette 1 has a front surface M2O as shown in FIG.
Inserted from the side. Then, when the tape cassette 1 is inserted along the bottom plate 60 of the cassette holder 35 in the direction of the arrow hole in FIG. The position is regulated and the cassette is inserted, and as shown in FIG.
8 and 6B. Here, further move the tape cassette l to the cassette holder 3 in the direction of the arrow hole in FIG.
5 When inserted inward, the protrusion 6 formed on the bottom plate 60
7.67 engages with the concave groove 20° 20 formed on the closing plate 14 of the tape cassette 1, and locks the locking piece 21 to the cassette half 4 to lock the closing plate 14 to the cassette half 4.
is pushed inward to release the lock at the closed position where the reel drive shaft insertion holes 12 and 13 of the closing plate 14 are closed.

Following the unlocking of the closing 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 closing plate 14, thereby preventing the closing 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, as shown in FIG. The 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 correspond to the reel drive shaft entry notch 64 formed in the bottom plate 60, and the reel drive shaft 38, 39 can be engaged with 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 set holder 35. As a result, the tape cassette 1 is prevented from floating near the center, and even if it is deformed, the deformation is corrected and the tape cassette 1 is inserted and held in a stable state in close contact with the bottom plate 60. In particular, this cassette holder 35 engages with the engagement recess 32 on the upper surface of the cassette half 4 and the engagement protrusion 73 at the tip of the engagement pressing support piece 7.
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 is prevented from being removed for secure retention. It can be performed.

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, as shown in FIGS. 2, 5, and 6. 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
．． It is operated to move in the vertical direction to engage and disengage from 35.

G-4 Slide guide frame and support mechanism of the slide guide frame to the mechanical chassis (Figures 1, 2, and 5) As described above, the cassette holder slide guide 1f47
The movement of the cassette holder 35, which is guided by the slide guides 8.78 and 79.79 in the horizontal and vertical directions, is carried out by the slide guides supported so as to be able to reciprocate in the horizontal direction via the support side plates 76 and 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 one side of a connecting support plate 80 from a drive motor 37 serving as a drive means for the slide guide frame 40. Rack gear installation, in which a rack plate 82 with a rack gear 81 formed on one side to which driving force is transmitted, is attached is carried out by attaching a side plate 83 so as to hang down, and forming a sliding side plate 84 on the other side so as to hang down. It is formed into a letter shape. The rack gear is mounted on the inner side of the side plate 83 facing the sliding side plate 84.
A slide guide block 87 made of synthetic resin is attached, in which a pair of slide guide grooves 86, 86, which are respectively engaged with a pair of slide guide pins 85, 85 planted on one support side plate 76, are bored in the longitudinal direction. It is being In addition, the other supporting side plate 77 is also attached to the slide side plate 84.
A pair of slide guide grooves 89° 89 are horizontally bored in the longitudinal direction and are engaged with a pair of slide guide pins 88 and 88, respectively.

Then, the slide guide frame 40 engages the slide guide pins 85, 85 with the slide guide grooves 86° 86 drilled in the slide guide plate 87, and slides the slide guides into the slide guide grooves 8989 drilled in the slide side plate 84. The pair of supporting side plates 7 are engaged with the pins 88 and 88.
6.77, the slide guide grooves 86.86 and 89.89 are guided by the slide guide pins 85.85 and 88.88, and reciprocate in the horizontal direction with respect to the mechanical chassis 36. be done.

The slide guide frame 40 also has a pair of first and second guide frames that are pivoted at the center by a pivot shaft 90 and are openable and closable so that the slide guide frame 40 can maintain a horizontal state with respect to the mechanical chassis 36 and reciprocate reciprocatingly in parallel. As shown in FIG. 2, it is connected to the supporting side plates 76, 77 via an opening/closing arm mechanism 191 consisting of two opening/closing arms 91, 92. The first opening/closing arm 91 has one end connected to the other supporting side plate 77.
As shown in FIG. 2, a fixed support shaft 94 is bent on the upper surface of the front end side of the support piece 93 and serves as a fixed support.
The rack gear of the slide guide frame 40 is attached to the opening/closing guide shaft 95 which is rotatably supported at the other end and hung down from the other end of the slide guide frame. The slide guide frame 40 and the other supporting side plate 77 are connected to each other by engaging with a long hole 97 whose long diameter is perpendicular to the moving direction of the slide guide frame 40, as shown in FIG. That is, the other end of the first opening/closing arm 91, which is the side that supports the slide guide frame 40, serves as a movable fulcrum. The second opening/closing arm 92 has one end bent onto the upper edge of the slide side plate 84 of the slide guide frame 40 and is attached to a fixed support shaft 9 which serves as a fixed support and is erected on a support piece 98.
The slide guide frame 4 is attached to a bent piece 104 formed by bending an opening/closing guide shaft 100 that is rotatably supported at the front end of one of the support side plates 76 and hung from the other end thereof.
Length 7L with the major axis in the direction perpendicular to the moving direction of 0
02 to connect the slide guide frame 40 and one support side plate 76. That is, the other end of the second opening/closing arm 92, which is the side supported by one of the supporting side plates 76, serves as a movable fulcrum.

As described above, each one end side is supported on the fixed support shaft 94.99,
The opening/closing guide shaft 95, 100 of the other end example is connected to the elongated hole 97.102.
A pair of first and second opening/closing arms 9192 are attached to the fixed support shaft 9 so as to be engaged with each other to serve as a movable support.
4.99 is a fixed fulcrum, and the elongated hole 97.
Opening/closing operations are performed centering on the pivot shaft 90 while slidingly guiding the opening/closing guide shafts 95, 100 to the opening/closing guide shafts 102. In this way, the supporting side plate 76.
77, the slide guide frame 40 is reciprocated parallel to the mechanical chassis 32 with the fixed support shafts 94 and 99 as the slide base.

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 1 from the position .
The tape reel 5.6 is moved horizontally between the corresponding second positions shown in FIGS. 7 and 8 and as shown in FIGS. 8, 9, 10 and 11. Drive shaft 3
The slide guide frame 40 is supported by the slide guide frame 40 so that the slide guide frame 8.39 can be moved in a vertical range of engagement and disengagement with respect to the slide guide frame 40.

Therefore, as shown in FIG. 2, FIG. 5, and FIG.
, 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
73 into the inclined cam grooves 105, 105 and 106.
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, the slide guide frame 40 has an opening/closing arm mechanism 19 consisting of a pair of first and second opening/closing arms 91 and 92.
1 is opened as shown in FIGS. 7 and 9, and the slide guide bins 85, 85 and 88.88 are inserted into the slide guide grooves [16, 86 and 89.89 in the range of FIGS. 1 and 6] During forward movement in the direction of the middle arrow B, the cassette holder 31 is moved forward relative to the mechanical chassis 36, which is the first position shown in FIGS. 1 and 6 where the tape cassette 1 can be inserted and removed. The slide guide support pins 74, 74 and 75, 75 are guided through the cassette polder slide guide grooves 78, 78 and 7979, and the reel drive shaft insertion hole 12 is opened at the bottom of the tape cassette 1 inside the mechanical chassis 36. , 13 and reel drive shaft 3
4.35 to the corresponding second position shown in FIGS. 7 and 8, and further engage the tape reels 5 and 6 with the reel drive shaft 34.35 at the second position. It works like a descending operation.

That is, a pair of first and second opening/closing arms 91°92
The opening/closing arm mechanism 191 consisting of the legs is closed and slides to a forward position relative to the mechanical chassis 36 with the slide guide pins 85, 85 and 88.88 located at the inner ends of the slide guide grooves 86.86 and 89.89. Guide frame 4
0 is in the moved state, the cassette holder 35 has slide guide support pins 74.47 and 75.75 in the cassette holder slide guide grooves 18.18 and 79.79, as shown in FIGS. It is supported 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 pins 74.74 and 75.75 engage with the upper edge, The cassette holder 35 is
While being moved from the position to the second position as shown in FIGS. 7 and 8, the engagement state is maintained and the slide guide frame 40 can be moved integrally with the slide guide frame 40. That is, the inclined cam groove 105. IO2 and 10
6.106, the cassette holder 35 is
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 pins 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, holes are formed from the upper edges of the slide guide block 87 and the slide side plate 84 toward the lower H side at a predetermined inclination angle.

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, 73b is an oblique angle corresponding to the hypotenuse of an isosceles triangle having one side as one side, and the slide guide frame 40 moves forward by the height of the vertical guide grooves 72b, 73b, 73b, and the cassette. The holder 35 is formed so that it can be lowered to the tape cassette mounting position.

Although not shown, on the lower edge of the front end example 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 as to press and engage the retaining bottle 107a protruding toward the proximal end side 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 108 and is rotated to open and close the opening/closing lid for opening and closing 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, it can be freely reciprocated with respect to the mechanical chassis 36 and operates the cassette holder 35 to move. The slide guide frame 40 has a fifth section on the lower edge of the mechanical chassis 36-side.
The reciprocating operation is performed by a drive motor 37 mounted as shown in the figure.

Between this drive motor 37 and the slide guide frame 40, the fifth
They are connected via a connecting gear mechanism 211 as shown in the figure. That is, the drive motor 37 and the slide guide frame 4
Between 0 and 0, an intermediate connecting gear 112 is connected between the worm gear 111 attached to the output shaft 110 of the drive motor 37 and the rack gear 81 of the rack plate 82 disposed on the outer side of the side plate 83. are connected by interlocking them. This intermediate connection gear 112 is the first
As shown in FIG. 2, a large-diameter constant-tooth gear 113 and a small-diameter pinion gear 114 are formed coaxially and integrally. The worm gear 111 and the rack gear 81 are connected by meshing with each other.

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 rack plate 82 has a pair of support bins 116, 116 planted in the side plate 83 inserted through retention guide holes 117, 117 whose major diameter is in the longitudinal direction. The rack gear is mounted between a first spring locking piece 11B cut and formed from the side plate 83 and a second spring locking piece 119 bent on one side of the upper edge of the rack support plate 115. 5 and 1 which are the backward movement directions of the slide guide frame 40 by the first limiter spring 120 consisting of a coil spring tensioned in the
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 movable and biased position of this rack support plate 115 is such that the rack gear is attached to the side plate 8.
The rack 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 which 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 rack 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 rack plate 82 has a rectangular notch opening 82a formed in the main surface of the rack plate 82.
The rack support plate 115 is fixed by the second limiter spring 121 stretched between the third spring locking piece 122 protruding through the rack plate 82 and the spring locking hole 125 formed in the rack plate 82. Slide guide frame 4 in the opposite direction to the movement biasing direction
The second limiter spring 1 is biased to move in the direction indicated by the arrow in FIGS.
21 on the side of the movement biasing direction is connected to the rack support plate 1.
The rack gear attachment is connected to the side plate 83 via the rack support plate 115 by contacting with a locking piece 127 bent at one end of the rack support plate 115 .

Then, the drive motor 37 moves the slide guide frame 40 to the first position.
When the first limiter spring 120 is rotated so as to move in the forward direction of the 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 done by operating the return position 1 detection switch 128 and the 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, Press Bisakuko 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 mounted 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, 1O, and 11. Then, when the switch guide frame 40 is at the return position, the insertion and holding operation of the tape cassette 1 into the cassette holder 35 is performed, and as will be described later, the switch guide frame 40
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 pins 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 bins 85.85 and 88.88 in slide guide grooves 86.86 and 88.88, respectively, as shown in FIGS. 10 and 11.
989, 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. 11, the rack plate 82 is integrated with the rack support plate 115 to support the first limiter spring 12.
1 is moved relative to the slide guide frame 40 while being extended, and the excessive load on the slide guide frame 40 is absorbed. 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 rack 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, and the excess load on the slide guide frame 40 is absorbed. 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 rack 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 shaft 3839 disposed on the tape recorder side, and ensures that the tape cassette is inserted into the mounting position securely. To do this, after it is detected that the tape cassette 1 is inserted and held in the cassette holder 35 with the closing plate 14 moved and the reel drive shaft insertion holes 12 and 13 opened, the slide guide frame 40 can be moved. A tape cassette insertion and holding mechanism is provided.

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 leaf 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 in the position of the front end of the mechanical chassis 36 which has been operated to move 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 which is inserted and held in the open state faces the position where it is pressed. 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.

The insertion detection of the tape cassette 1 by the tape cassette insertion/holding detection device is performed as follows.

That is, with the slide guide frame 40 located at the front end of the mechanical chassis 36 and the cassette holder 35 moved to the first position as shown in FIG. Concave grooves 20.
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 abut against 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 holes 12 and 13, the pressed operation portion 13
2 is pressed by the upper surface of the cassette half 4, and the tape cassette insertion detection piece 131 is rotated upward in the direction of arrow G in FIG. 14 against the biasing force of the temporary spring 137.
The lock piece 134 is released from the lock part 133.

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 l is inserted and held in the cassette holder 35 with the reel drive shaft insertion holes 12, 1.3 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. 1O, Fig. 1, Fig. 16, and Fig. 17)) and a tape cassette l on the tape recorder body side.
A front cover opening mechanism is provided which opens the front cover 10 of the tape cassette 1 against the biasing force of a torsion coil spring 11 in connection with the mounting operation of the tape cassette 1 at the tape cassette mounting position. This front lid 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 openings for rotating the lid in the lid opening direction are composed of members 141 and 142. 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 10, and the front cover 10 is twisted to resist the biasing force of the coil spring 11. to operate the rotation.

In addition, for opening the other lid, the member 142 rotates the front lid 10 by contacting the lower edge on the other side of the front lid 10 of the tape force set 1-1 on the tip side, as shown in FIG. It is formed as a plate-like body with a protruding pressing operation part 145,
For installation with the proximal end planted on the mechanical chassis 36, use the plate 140.
It is rotatably mounted on a pivot shaft 146 installed at a lower position. This other lid is opened by member 14.
2 is connected to a rotation operation plate 147 that is rotated by an inner slide guide support bin 75 that supports the cassette holder 35 on the installation plate 140 when the cassette holder 35 is lowered. There is. That is,
To open the other lid, the member 142 inserts and engages a rotation guide pin 148 protruding from the - side into a long hole 149 formed in the main surface of the rotation operation plate 147. When the rotation operation plate 147 is rotated, the rotation guide bin 148 is slid and guided through the elongated hole 149 and 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 wound around the pivot shaft 150 and has one arm portion 151a.
The above mounting is carried out by a torsion coil spring 151 which is engaged with a spring engagement part 152 bent on the upper edge of the side plate 140, and the other arm part 151b is engaged with a spring pin 153 protruding from the rotation operation plate 147. , - The rotationally operated portion 154 on the side surface is biased to rotate in the direction of arrow H in FIG. 15 so that it is located within the movement locus of the slide guide support bin 75. The rotary operation plate 14 that is rotationally biased in this way
As shown in FIG. 15, the other lid opening member 142 connected to the cassette holder 7 receives the rotational biasing force of the rotational operation plate 147 so that the pressing operation portion 145 on the tip side is moved toward the lowering direction side of the cassette holder 31. The front surface 11 of the tape cassette l
It is biased to rotate so as to face the lower edge of 0. Then, the cassette holder 35 moves from the second position shown in FIG.
When the tape cassette is lowered to the tape cassette mounting position shown in FIG. It is rotated in the opposite direction of arrow H in FIG. When this rotation operation plate 147 is rotated, the member 142 is moved to the rotation guide pin 1 to open the other lid.
4B is slid and guided by the elongated hole 149 and rotated in the direction of the arrow 1 in FIG. The front side of the cassette half 4 is opened by rotating it against the biasing force of the cassette half 4 as shown in FIGS. 1O and 17.

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.

18 and 19) In this tape recorder, when the tape cassette 1 is ejected, the cassette holder 35 in which the tape cassette 1 is inserted and held is moved from the tape cassette mounting position side to the first position side. , a tape cassette discharge mechanism is provided which operates to project the tape cassette l so that it can be removed and operated 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 that faces the tape cassette insertion/ejection opening 35a on the front side. The cassette pressing operation lever 157 is supported by the slide guide frame 40 so as to be freely movable and retractable, and the rotation guide pin 158 is rotatably supported by the mechanical chassis 36 and is 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 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. This cassette pressing operation lever 157 has a pair of slide guide grooves 164, 1.64 bored in the longitudinal direction so that the cassette pressing operation part 156 faces approximately the center in the left and right direction of the cassette holder 35. is engaged with a pair of slide guide pins 165 and 165 set in the center of the lower surface of the connecting support plate 80 of the slide guide frame 40, and is attached so as to be able to move forward and backward in the reciprocating direction of the slide guide frame 40. .

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 rotation operating lever 1 is rotatably mounted with its base end pivotally supported on a support shaft 170 erected on the support shaft 170.
60 receives the urging force of a tension spring 16111 that urges the cassette pressing operation lever 157 to move, and the support shaft 1
The cassette holder 35 is biased to rotate about the center 70 in the direction of the arrow in FIG. 1 on the side of the cassette holder 35. 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 pin 15B moves within the rotation guide groove 159, thereby rotating about the support shaft 170. be done.

Further, the cam lever 163 has a cam follower 161 protrudingly engaged with an arcuate guide groove 171 bored in the middle part of the rotary operating lever 160, and its base end is planted in the middle part of the rotating operating lever 160. It is pivotally supported on a support shaft 172 and rotatably attached to the lower surface side of the rotation operation lever 160. This cam lever 163 has a tension tensioning mechanism that is stretched between a spring locking piece 173 protruding from the tip 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 foyer 161 abuts and engages is formed as a molded body of synthetic resin, and as shown in FIG. It is attached via a support pin 176. The cam body 161 is formed with first and second cam surfaces 177 and 178. The first cam surface 177 serves as 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 and press the cam lever 163.
After the slide guide frame 40 reaches the position where the cassette holder 35 is moved to the second position, the cassette holder 35 is moved to the tape cassette. The abutting engagement is released in the process of reciprocating to perform a lowering operation 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 second cam surface 178 moves the cassette holder 35, which is in a state where the slide guide frame 40 has been lowered toward the tape cassette mounting position, to a second position where the slide guide frame 40 is raised relative to the tape cassette mounting position. When the cam follower 161 is moved back for operation, the cam follower 161 is pressed into engagement, and the cassette holder 3
5 from the second position toward the first position, the cam lever 163 is rotated in the rotation biasing direction by the tension spring 175, and the cam lever 163 is rotated via the cam lever 163. The operating lever 160 is rotated toward the cassette holder 35 in the direction of the arrow in FIG. This second cam surface 178 is formed to be perpendicular to the reciprocating direction of the slide guide frame 40, and is
1 is rotated by a predetermined amount, the slide guide frame 40 is formed to a length that releases the cam follower 161 in the process of moving back to move the cassette holder 35 to the first position. There is.

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 1 inserted and held in the cassette holder 35 is not pressed 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 operation 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. When the rotation operation lever 160 is rotated in this way, the engagement pin I58 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 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 1 inserted and held in the cassette holder 35, and the tape cassette l is transferred to the tape cassette of the cassette holder 35. 1. Protrude toward the insertion/removal port 35a side. The cassette holder 35 can be removed from the cassette holder 35.

Note that when the tape cassette 1 is operated to be projected 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.

G-9 Mounting operation of tape cassette (FIGS. 1, 5 to 11) The mounting operation of 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 1, 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 allows the tape cassette 1 to be inserted and removed. Move it to the first position. In this state, the tape cassette insertion detection plate 131 attached to the slide guide frame 40
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 M2O side through a tape cassette insertion slot formed in the outer casing (not shown) of the tape recorder. The tape cassette 1 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 l is further inserted into the cassette holder 35 with the movement of the closure Fi 14 being regulated, the cassette half 4 moves further inward with respect to the closure plate 14 and the insertion hole formed in the closure plate 14 is moved. ts, to and cassette half 4
The reel drive shaft insertion holes 12 and 13 on the bottom correspond to each other, and these reel drive shaft insertion holes 12 and 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. and,
The tape cassette 1 is pressed and supported on both sides by a pair of cassette pressing and supporting pieces 68 and 68, while being pressed and supported at the center by the engaging pressing and supporting piece 71, and also by the engaging protrusion 72.
Due to the relative engagement of the engagement recess 32 with the cassette holder 35
Furthermore, when the cassette half 4 is inserted so that the retaining protrusion 72 engages with the engaging recess 32 as described above, the tape is held by the cassette half 4. Cassette insertion detection piece 23
One pressed operation section 132 is pressed. By this pressing operation of the pressed operation part 132, the tape cassette insertion detection piece 131 is pushed up and rotated against the biasing force of the temporary spring 137, and the locking piece 134 is released from the locking part 133. Then, the slide guide frame 40 is unlocked and becomes movable. When the lock release 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 is moved slightly 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 Slide operation piece 126
is separated, the pressing state of the pressing operator 128a is released, and the driving motor 3 is released from the returning position detection switch 12B.
7 is output.

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

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 forward rotation direction to drive the slide guide frame 40.
When the cassette holder 35 is further moved in the forward movement direction 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 reel 5.6 and the reel drive shaft 38.38, and the mounting position is regulated by the tape cassette positioning pins 180, 180, so that a predetermined tape It is installed in the cassette installation 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 mounting operation is completed.

Note that when the cassette holder 35 is lowered to the tape cassette mounting position, the pair of lid opening parts 144 and 145 of the tape reel opening parts 141 and 142 are operated to open the tape reel.
The front surface 110 of the cassette half 4 is brought into contact with both sides of the lower edge side of the front surface 110, the front surface difference 10 is rotated, the front surface side of the cassette half 4 is opened, and the magnetic tape 7 extending on the front surface side is exposed to the outside. A state is made in which a withdrawal operation using the loading operation mechanism is possible.

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

As described above, when the front cover 10 is opened and the tape cassette l is loaded into the tape cassette mounting position, the moving guide blocks 43, 44, etc. that constitute the loading mechanism move toward the tape cassette mounting position. 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 state in which the tape cassette 1 mounted at the predetermined tape cassette mounting position as described above is removed from the tape recorder will be described.

To take out the tape cassette l, first operate an eject button 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 cassette 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 holds and holds the cassette holder 35 in the direction of the arrow in FIG.
rotated to the side. 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 16B, 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 l is pressed in this way, the cassette half 4 is moved to the cassette holder 35 while disengaging the engagement recess 32 on the top surface and the engagement protrusion 72 at the tip of the engagement pressing support piece 71. 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 are moved relative to each other, and the reel drive shaft insertion holes 12 and 13 are in an initial state where they are closed. Here, the tape cassette 1 is further pushed out from the tape cassette insertion/ejection opening 35a by being pressed by the cassette pressing operation section 156, and
At least a portion of the tape cassette is projected outward from the outer casing through the tape cassette insertion opening formed in the outer casing, and becomes removable 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 backward movement 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 operate the tape cassette 1 to protrude from the cassette holder 35, the second cam of the cam follower 161 The abutting engagement with surface 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.

In the above-mentioned embodiment, the present invention was applied to a digital audio recorder.
Transfer the tape cassette inside and outside the device body,
The present invention can also be applied to a recording/reproducing device such as a video tape recorder in which a cassette is inserted into a predetermined mounting position within the main body of the device.

H2 Effects of the Invention As described above, the present invention provides a pair of first and second slides that are pivotally supported to be openable and closable between a mechanical chassis and a slide guide frame that vertically movably supports a cassette holder into which a tape cassette is inserted and held. and a tape cassette mounting device in which an opening/closing arm mechanism consisting of a second opening/closing arm is interposed, and the slide guide frame is reciprocatably supported on the mechanical chassis, the first and second opening/closing arms forming the opening/closing arm mechanism being interposed therebetween. One end of each opening/closing arm is supported via a fixed fulcrum on a mechanical chassis and a slide guide frame, respectively, and the other end is supported on a mechanical chassis and a slide guide frame via a movable fulcrum, respectively. When the slide guide frame is reciprocated by transmitting the driving force from a drive means such as a drive motor only to one side of the frame, the mechanical chassis and slide guide compensate for the deviation in the horizontal movement of the slide guide frame. It is composed of first and second opening/closing arms interposed between frames and pivotably supported to open and close freely, and is adapted to absorb by the opening/closing arm mechanism with each other end of each opening/closing arm as a movable fulcrum. .

Therefore, the driving force from the driving means is transmitted to the slide guide frame through the connecting gear mechanism provided on one side of the slide guide frame, so that the slide guide frame is operated to reciprocate with respect to the mechanical chassis. Even when the slide guide frame is reciprocated, the first and second opening/closing arms constituting the opening/closing arm mechanism open/close by movably displacing the movable fulcrum with the fixed fulcrum as the opening/closing reference point. As the slide guide frame is operated, the slide guide frame is reciprocated based on the fixed fulcrum side of the opening/closing arm, and the backlash in the direction perpendicular to the reciprocating direction of the slide guide frame is absorbed, resulting in stable reciprocating motion. An operation is performed.

Since the driving force from the driving means is transmitted only to one side of the slide guide frame, the mechanism for reciprocating the slide guide frame can be made into a cylinder.

[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 a tape recorder cassette is inserted into the cassette holder constituting the tape recorder, and FIG. 4 is a plan view showing a state in which the tape cassette is inserted and held in the cassette holder. . 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 slide guide frame moved to the innermost position, 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 cover 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. FIG. 20 is a perspective view from the top side 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 2.13...Reel drive shaft insertion hole 5...Cassette holder 7...Drive motor 0...Slide guide frame■...Rack gear 2...Rack plate 3...・Rack gear installation is on side plate 0... Pivot 1 of first and second opening/closing arm... First
Opening/closing arm 2...Second opening/closing arm 4...Fixed support shaft 5...Opening/closing guide shaft 7...Elongated hole 9 provided in the slide guide frame...Fixed support shaft OO...Opening/closing guide Shaft 02... Elongated hole provided in the support side plate 11... Worm gear 12... Intermediate connection gear 13... Equal tooth gear 14... Pinion gear 15... Rank support plate 16... Support bin 20 ...First limiter spring 21...Second limiter spring 191...Opening/closing arm mechanism 211...Connection gear mechanism

Claims (1)

[Scope of Claims] A mechanical chassis, a slide guide frame that supports a cassette holder into which a tape cassette is inserted and held so as to be movable up and down with respect to the mechanical chassis, and first and second opening/closing parts pivotably supported to be openable and closable. The first opening/closing arm has one end rotatably supported on the mechanical chassis via a fixed fulcrum, and the other end rotatably supported on the slide guide frame via a movable fulcrum,
The second opening/closing arm has one end rotatably supported on the slide guide frame via a fixed fulcrum, and the other end rotatably supported on the mechanical chassis via a movable fulcrum, and an opening/closing arm mechanism that reciprocally supports the slide guide frame with respect to the mechanical chassis by the opening/closing operation of the opening/closing arm; A tape cassette mounting device comprising a drive means for reciprocating operation.