JPS61276162A - Cassette loading device - Google Patents

Abstract

PURPOSE:To avoid a case where the foreign matters are mixed through an opening part for loading/unloading of a cassette or the cassette is loaded in a wrong way, by providing a plate rotatably to a mounting means and adding a prescribed function to this plate. CONSTITUTION:A cassette 9 storing a magnetic tape is loaded and a tray 6 having a recess part 10 is moved between the 1st position where the cassette 9 is loaded and unloaded and the 2nd position where the recording/reproducing operation is carried out. A plate 16 is provided rotatably to the tray 6. Then the plate 16 is moved so as to touch the front end part of the cassette 9 for guidance of the cassette 9 when the tray 6 is set at the 1st position and the cassette 9 is put on the tray 6. while the plate 16 is turned to another position to give no disturbance for exposure of the tape when the tray 6 is set at the 2nd position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette loading device, for example in a video or audio cassette tape recorder.

[Summary of the invention]

The present invention is provided with a φ mounting means in which a cassette containing a magnetic tape is placed and is moved between a first position for attaching and detaching the cassette and a second position for recording and reproducing. In the cassette loading device, the mounting means is rotatably provided with a plate, and when the mounting means is in the first position, the plate comes into contact with the front end of the cassette when the cassette is placed on the mounting means; The cassette is positioned to guide the cassette, and when the mounting means is in the second position, it is rotated to a position where there is no problem in exposing the magnetic tape. This is to ensure that the cassette is always placed in a normal state during operation, and to prevent foreign objects or cassettes from being accidentally inserted through the opening through which the tray moves forward and backward.

[Conventional technology]

Conventionally, there are various types of cassette loading devices, the representative ones being the pop-up type and the slot-in type. In the pop-up method, a cassette holder is provided so as to protrude from the top surface of the device (pop-up) and accommodate the cassette holder.

When installing a cassette, the cassette holder is popped up, the cassette is inserted into the cassette holder, and the cassette is pressed from the top to be housed in the main body of the device. On the other hand, in the slot-in method, there is an opening in the front of the device that is normally closed by a door, and when the cassette is slightly inserted into the opening while pushing the door open with its tip, the rest is automatically closed. The cassette is housed inside.

[Problem that the invention seeks to solve]

However, with the pop-up method, the cassette holder pops up from the top of the device when loading or unloading the cassette.
This was inconvenient because it was not possible to stack other devices on top of the device. On the other hand, the slot-in method does not have such a drawback because the cassette is inserted from the front, but since the cassette is grabbed by hand and inserted into the opening, a space is required for the cassette to be grasped. If the cassette was too small, it would warp and become difficult to operate.

[Means for solving problems]

1 to 11 all show the configuration of the cassette loading device of the present invention. In these figures, 1 is a casing, and an opening 2 is formed in the front of the casing. The opening 2 is closed or opened by a door 4 which is rotatable outward and downward about a fulcrum 3. 5 is a spring that always biases the door 4 in the direction of closing it.

Reference numeral 6 denotes a tray, which can be moved forward and backward from the opening 2. The tray 6 is provided with a recess 10 on which a cassette 9 having a lid 7 that is rotatable about a fulcrum 8 can be placed therein so as not to fall off. Reference numeral 11 denotes a release member, which has a bent portion 12 at its tip and a protrusion 13 approximately at its center, and is provided so as to be movable (slidable in the embodiment) on the tray 6. Reference numeral 14 denotes a spring, which constantly urges the release member 11 inward (leftward in FIG. 1). Reference numeral 15 designates a notch for movably protruding the projection 13 of the release member 11 into the recess 10 of the tray 6 (FIG. 8). 16 is a plate rotatably provided on the tray 6 about a fulcrum 17, and the cassette 9
comes into contact with lid 7.

In order to prevent the cassette 9 from falling into the opening 2, the inner side surface of the recess 1o (the left side surface in FIG. 1) can be placed in a closed position or in an open position. There is. Reference numeral 18 denotes an actuating member, and when the tray 6 moves inside the housing 1, its side surface touches the bending part 12 of the release member 11, and its upper surface touches the lid 7 and the plate 16.
Each has a flap that can be brought into contact with the lower end of the holder. 19 is tray 6
The pin 20 implanted in the release member 11 is a long hole formed in the release member 11, and the pin 19 is fitted into the long hole 20, and the release member 11
It is designed to guide the movement of the

Of course, the formation positions of the pin 19 and the elongated hole 20 may be reversed.

Reference numeral 21 denotes guide plates provided on the left and right sides of the housing 1, and a guide hole 22 has a horizontal portion and a vertical portion that are parallel to each other.
and 23 are formed. Pins 24 and 25 are implanted in the tray 6, and are fitted into guide holes 22 and 23, respectively, to guide the tray 6 in the horizontal and vertical directions. Reference numeral 26 denotes a rack plate disposed on the outside of the left and right guide plates 21, which includes guide holes 27 and 28 parallel to each other and inclined downward at approximately 45 degrees, and an inclined portion inclined upward at approximately 45 degrees. Guide holes 29 each having a horizontal portion are formed. 31 is guide plate 2
1, and is fitted into the guide hole 29 to guide the movement of the rack plate 26. Reference numeral 32 denotes an arm, which is rotatable around a fulcrum 33 provided on the guide plate 21. A pin 34 is implanted at one rear end of the arm 32, and is fitted into the guide hole 29 of the rack plate 26. 35
is a vertically movable ramp, and has pins 37 fitted into elongated holes 36 formed in the guide plate 21 on its left and right sides.

A spring 38 has one end fixed to the clamper 35 and the other end fixed to the arm 32, and is always biased so that the clamper 35 (its pin 37) comes into contact with the upper end of the arm 32.

Reference numeral 41 denotes a motor, and its rotation rotates the phase shaft 43 via a deceleration mechanism 42 . Phase axis 43
Phase gears 44 are provided at both ends of the rack plates 26, and mesh with racks 45 formed at the lower ends of the left and right rack plates 26, so that the left and right rack plates 26 move synchronously.

46 is a clutch provided on the phase shaft 43.

When the guide plate 26 is subjected to a load exceeding a predetermined value, slipping occurs.

51 and 52 are switches installed separately at the rear and front of the housing 1, and when the rack plate 26 moves to a predetermined position, they are pressed by their protrusions 53 and are activated (
(on or off).

[Effect]

The effect will now be explained. First, when loading the cassette 90, the motor 41 is energized by operating, for example, an eject switch (not shown), and the tray 6 is protruded from the opening 2 of the housing 1 (FIGS. 6, 7, and 7). Figure 8)
, in such a state, hold the cassette 9 in your hand and place it on the tray 6.
It is placed in the recess 10 of. Since the recess 10 is formed to have approximately the same size as the outer shape of the cassette 9, the cassette 9 can be set approximately at a predetermined position. Further, at this time, the plate 16 closes one side surface (the side surface on the opening 2 side) of the recessed portion 1°. Therefore lid 7
The cassette 9 is brought into contact with the cassette 9 and its position is regulated, so that there is no risk that the cassette 9 will fall out of the opening 2 or be incorrectly inserted, as shown by the two-dot chain line in FIG. 12(d). Also, Figure 12(b)
, (C), even if the cassette 9 is placed with its leading end facing upward or downward, it will be guided to the normal state as shown by the solid line. In this way, it is not only a simple operation of simply placing the cassette 9, but also the plate 16 guides the cassette 9 even if the cassette 9 is placed in a different direction. Even if there is, the operability will not deteriorate. Furthermore, even when the door 4 is opened in the ascending direction and the tray 6 is ejected from the opening 2, the opening 2 can be substantially closed, thereby preventing foreign objects from being inserted through the opening 2. Ru.

As shown in FIGS. 10 and 11, a protrusion 62 that is operated to unlock the lid 7 is formed on the lower left side of the cassette 9, and a space 61 is formed in front of the protrusion 62. When the cassette 9 is correctly placed in the recess 10 of the tray 6, the protrusion 13 of the release member 11 will fit into this space 6.
1. At this time, the release member 11 is moved inward by the spring 14 (on the right side in FIG. 8) until the outer end of the elongated hole 2o contacts the pin 19 of the tray 6.
10, the protrusion 13 does not contact (press) the protrusion 62 of the cassette 9 (FIG. 10). Therefore, the lid 7 is opened only when the cassette 9 is placed in the recess 10, and damage to the magnetic tape is prevented. In addition, as in the case where the release member 64 is fixed to the tray 6, the release member 64 is attached to the protrusion 6.
There is no possibility that the lock will get stuck behind ζ of 1 and become impossible to unlock (FIG. 5(d)).

On the other hand, such a space 61 is not formed in the force set 9 except in the front of the lower left side thereof, so the cassette 9 can be moved forward or backward (Fig. 13(a)) or the top and bottom surfaces can be reversed (Fig. 13(a)). If the cassette 9 is not placed properly as shown in FIG. is made clear to the user at a glance.

If the user does not notice this and performs an operation to accommodate the tray 6 inside the opening 2 as described later.

Any part of the cassette 9 is located on the outer periphery of the opening 2 in the housing 1
, and the tray 6 is no longer accommodated inside. Also, when the cassette 9 is mounted in the recess 10 with the plate 16 rotated upward and the loading operation is performed,
The plate 16 collides with the outer peripheral wall of the opening 2. At this time, since a load greater than a predetermined value is applied, the clutch 46 operates, thereby preventing damage to the cassette 9 and the like.

If the tray 6 cannot be accommodated within a predetermined time after the start of the operation, a microcomputer or the like (not shown) detects this as some kind of abnormality and ejects the tray 6. Therefore, the cassette 9 will not be housed inside the device in an abnormally set state.

As shown in FIG. 5(a), when the cassette 9 is correctly installed, the motor 41 is energized by operating, for example, a start switch (not shown) or the like. Alternatively, if the tray 6 is slightly pressed inward, the protrusion 53 will separate from the switch 52.
After this is detected, the motor 41 may be energized thereafter.The rotation of the motor 41 is transmitted via the deceleration mechanism 42 to the phase shaft 43 and, therefore, to the phase gears 44 at both ends thereof. Since the phase gear 44 meshes with the rack 45, the left and right rack plates 26 move backward. Since it is pressed against the outer inclined surface of the guide hole 27.28, the bin 24.25 is guided by the horizontal part of the guide hole 22.23, and the tray 6 is horizontally translated (retracted).

When the tray 6 retreats to a predetermined position, the door 4, which had been pressed by the lower surface thereof, rotates upward about the fulcrum 3 due to the biasing force of the spring 5, and stops at a position where it abuts against a stopper (not shown). Opening 2 is closed.

When the pin 24.25 is near the end of the horizontal portion of the guide hole 22.23, the side surface of the actuating member 18 abuts against the bent portion 12 of the release member 11. Therefore, the release member 11 is prevented from moving backward and stops there.

On the other hand, when the trailer further retreats, the protrusion 13 moves within the notch 15 and presses the protrusion 62, and the lid 7 is unlocked (FIG. 5(b)).

When the rack plate 26 retreats to the position where the protrusion 13 abuts the protrusion 62, the bins 24 and 25 are inserted into the guide hole 22.
．． It will be located at the vertical part of 23. As a result, when the rack plate 26 is further retracted, the bins 24, 25 . Therefore, the tray 6 is guided by the vertical portions of the guide holes 22, 23 and descends substantially vertically. When the tray 6 reaches the lowered position, the lower ends of the lid 7 and the plate 16 are positioned above the actuating member 18. Therefore, when the tray 6 is lowered, the lid 7 and the plate 16.

The lower ends thereof are pressed against the upper surface of the actuating member 18, and they rotate together upwardly about the fulcrums 8 and 17, respectively.

At this time, the bent portion 12 of the release member 11 descends along the side surface of the operating member 18, so the protrusion 62 is pressed by the protrusion 13, and the unlocked state is maintained (FIG. 5(c)). , as a result, the magnetic tape 6 housed inside
3 (FIG. 10) is exposed to the outside, and can be pulled out from the cassette 9 by means not shown if necessary.

On the other hand, when the rack plate 26 is retracted to a predetermined position, the bin 34 is guided from the horizontal part of the guide hole 29 to the inclined part. As a result, the bottle 34 begins to move upward, and the arm 32 rotates about the fulcrum 33. Since the bottle 37 is in contact with the upper end of the arm 32 due to the biasing force of the spring 38 (FIG. 9), the clamper 35 having the bottle 37 is lowered together with the arm 32. Therefore, at this time, the biasing force of the spring 38 does not affect the rotational force of the arm 32. At this time, since the plurality of bins 37 are guided by the plurality of long holes 36, the clamper 35 stably descends substantially horizontally. When the arm 32 further descends, the clamper 35 comes into contact with the upper surface of the cassette 9 placed on the tray 6 and presses and clamps the cassette 9 onto the tray 6. After the tray 6 has descended to the lowest predetermined position, when the arm 32 further descends, the upper end of the arm 32 touches the bin 3.
7 and the spring 38 is expanded (FIG. 3). Therefore, from this point on, the rotational force of the arm 32 is reduced by the spring 38.
However, the cassette 9 is reliably clamped by the urging force of the spring 38. The pivot point 33 of the arm 32 is the pin 3 as a driving point.
4 (on the right side in FIG. 2), it is better to position the arm 32 between the point where the clamper 35 is actuated via the spring 38 and the bottle 34 as in the embodiment. The length can be made shorter, which is advantageous for downsizing.

In the above description, the bottles 31 and 34 are guided or driven by the same guide hole 29.
At least its horizontal portion can also be an independent guide hole dedicated to each bin. However, if the horizontal portions of the guide holes are shared as in the embodiment, it is not only easier to manufacture the rack plate 26, but also the height can be lowered, which is advantageous for making the device thinner. Furthermore, since the inclined portion of the guide hole 29 that drives the pin 34 and the guide hole 27.28 that drives the pin 24.25 are inclined in opposite directions, when the tray 6 and the clamper 35 are moved up and down, The reaction force applied to the rack plate 26 by the pin 34 and the reaction force applied to the rack plate 26 by the pins 24, 25 are in opposite directions, and the couple forces that try to rotate the rack plate 26 cancel each other out. Furthermore, even if a component that is not canceled out remains and a rotational force centered on the phase gear 44 acts on the rack plate 26, one phase is generated because the pin 31 is positioned almost directly above the phase gear 44 as a drive source. There is little risk that the gear 44 will separate from the rack 45. Therefore, the rack plate 26 is guided by the pin 31 fitted into the guide hole 29, and its movement can be stabilized. Pin 24.25 is in guide hole 22.23
The rotation of the rack plate 26 when the pin 34 is moving in the horizontal part of the guide hole 29 causes the pin 37 to come into contact with the upper end of the elongated hole 36, and the pin 34 is moved further downward. This can be prevented by making it impossible to move, or by keeping the pins 24.25 in contact with the upper ends of the guide holes 27.28.

When the rack plate 26 retreats to a predetermined position, the protrusion 53 presses the switch 51 to operate it.

Therefore, the power to the motor 41 is removed and the rack plate 26 is stopped. At this time, the spring 3″8 is expanded,
A biasing force is generated, and the clamp (35) uses this biasing force to clamp the cassette 9 at the recording/reproducing position, and loading of the cassette 9 is completed.

In this state, information is recorded or reproduced on the magnetic tape 63.

Next, the unloading operation will be explained.

When an eject switch (not shown) or the like is operated, the magnetic tape 63 is housed inside the cassette 9, and the motor 41 is energized for one revolution in the opposite direction to that during loading. As a result, the rack plate 26 moves forward, the pin 34 is guided by the guide hole 29 and descends, and the arm 32 rotates in the opposite direction to that described above. When the spring 38 is compressed by its own biasing force and the upper end of the arm 32 comes into contact with the pin 37, the clamper 35 then moves up integrally with the arm 32.

As the rack plate 26 moves forward, the guide holes 27 and 28
The pins 24 and 25 are pressed by the inner inclined surface of the lid 7, and thus the tray 6 rises. Although not shown, the lid 7
is constantly biased in the closing direction by a spring housed inside. In addition, the position of the fulcrum 17 is set offset from the center of gravity so that the plate 16 always rotates in the direction of closing due to its own weight (of course, the number of parts and the installation space may increase. Therefore, when the tray 6 rises, the lid 7 rotates due to the biasing force of the spring, and the plate 16 rotates due to its own weight, thereby closing the cassette 9 or the recess 10.

When the rack plate 26 advances to a predetermined position, the pin 2
4 and 25 are guided by the horizontal part of the guide hole 22.23,
Tray 6 moves horizontally. At this time, the door 4 is pressed by the front end and lower end of the tray 6, and the door 4 is rotated downward and outward about the fulcrum 3 against the biasing force of the spring 5, and the opening 2 is opened. Although the door 4 can be rotated upward, it is preferable that the door 4 be rotated downward when opening, since this may interfere with the operation of attaching and detaching the five cassettes 9. In addition, if the device is rotated inward, it becomes necessary to secure space for the rotation, which not only increases the size of the device, but also allows it to be opened simply by pressing inward, making it susceptible to mischief by children. It becomes easier. Therefore, it is preferable to rotate the tray 6 downwardly and outwardly to open it. When the tray 6 is ejected to the outside from the opening 2 and reaches a predetermined position, the protrusion 53 operates the switch 52.
The motor 41 is de-energized and the unloading operation is completed.

〔effect〕

As described above, the present invention provides a mounting device in which a cassette containing a magnetic tape is placed and is moved between a first position for attaching and detaching the cassette and a second position for recording and reproducing. A cassette loading device comprising:
The mounting means is provided with a rotatable plate, and the plate is configured such that when the mounting means is in the first position, the plate comes into contact with the front end of the cassette and guides the cassette when the cassette is placed on the mounting means. At the same time, when the mounting means is in the second position, it rotates to a position where there is no problem in exposing the magnetic tape, so the structure is not complicated and the operability is not deteriorated. With a simple operation, the cassette can always be placed in a normal state, and it is possible to prevent foreign objects or cassettes from being accidentally inserted through the opening through which the tray moves forward and backward. Therefore, it is particularly effective in .81 video tape recorders and the like.

[Brief explanation of the drawing]

Fig. 1 is a left side view of the cassette loading device of the present invention in a state in which a cassette is accommodated, Fig. 2 is a right side view thereof, Fig. 3 is a front view thereof, Fig. 4 is a plan view thereof, and Fig. 5 is a A right side view for explaining the operation. FIG. 6 is a left side view of the cassette with the cassette ejected, FIG. 7 is a right side view of the cassette, FIG. 8 is a plan view of the cassette, FIG. 9 is a front view of the cassette, and FIG. 10 is a partial sectional view of the cassette. FIG. 11 is a partial perspective view thereof, FIG. 12 is a right side view for explaining its operation, and FIG. 13 is a left side view for explaining its operation. 1... Housing 4... Door 5.14.38... Spring 6... Tray 7... Lid 9... Cassette 10... Recessed part 11... Release member 12 Bending part 13.53.62... Projection 15... Notch 16... Plate 18... Operating member 21... Guide plate 22.23.27.28.29... Guide hole 24.2
5.31.34.37...Pin 26...Rack plate 32...Arm 35...Clamper 43
...Phase axis 44...Phase gear 45...Rack 51.52...Switch 61...Space part 63...More than magnetic tape

Claims (1)

[Claims] A cassette in which a magnetic tape is stored is placed, and the cassette is moved between a first position for attaching and detaching the cassette and a second position for recording and reproducing. A cassette loading device comprising: a plate rotatably provided on the loading means, and the plate is configured to load the cassette on the loading means when the loading means is in the first position. When the mounting means is in the second position, the mounting means is rotated to a position where there is no problem in exposing the magnetic tape. A cassette loading device characterized by: