JPH02148449A - Door opening and closing device for cassette inserting port - Google Patents

Abstract

PURPOSE:To correspond to both upper opening and lower opening by providing a linking arm between a cam arm to be turned by an operating piece to be interlocked with a holder, which is provided in the almost center of a door to be supported by the upper or lower direction of a cassette inserting port, and an opener to execute the opening and closing of the door. CONSTITUTION:An operating piece 24a such as a pin, etc., is provided in a position to be almost coincident to the center of a tape cassette A which is inserted to the inserting port of a door 27 to be supported by the upper or lower direction of the cassette inserting port. Then, a linking arm 29 is provided between a cam arm 26, which is turned by the operating piece 24a, and an opener 28 which is supported and executes the opening and closing of the door by the turn. Accordingly, by changing the support position of the opener 28 up and down and changing the linking position of the linking arm 29, which links the opener 28 and cam arm 26, up and down to the support position of the opener 28, the motion of the opener 28 can be made reverse to the motion of the cam arm 26. Thus, the door can correspond to the both upper opening and lower opening.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a door that closes the cassette insertion slot of a tape player with a spring bias before the tape cassette is inserted, by resisting the spring bias. A tape cassette can be inserted into the cassette insertion slot, and when the tape cassette is set in the tape drive mechanism, the door is closed, and when the tape cassette is ejected, the door opens and the tape is sent to the cassette insertion slot. The present invention relates to a door opening/closing device for a cassette insertion slot that does not cause any trouble.

[Conventional technology]

The 25th conventional door opening/closing device for this type of cassette insertion slot
As shown in the figure.

In the figure, 60 is a front grill on the front of the tape player, into which a tape cassette is inserted and a holder 6 is inserted.
A cassette insertion opening 60a is formed, and a door 62 is pivotally supported below the cassette insertion opening 60a, and the door 62 is biased by a spring so as to be in a closed state.

When this door 62 is pushed open against the spring bias and the tape cassette is inserted and held in the holder 61, the gear 63 is driven and the arm 64 is moved to the pin 61a of the holder 61.
, the holder 61 moves along the guide groove 65,
The lever 66 that transports the tape cassette and sets it in the tape drive mechanism is an arm that is rotatably supported on a shaft 67. When the bin 61a moves along the guide groove 65, the cam portion 66a moves. It swings as it is pushed by the pin 61a.

During the swinging, the tip 66b presses down the work piece 62a of the door 62 to open it, and when the tape cassette is ejected,
The tape cassette is prevented from hitting the door 62.

When the tape cassette is set in the tape drive mechanism, the arm 66 returns to the initial position and the door 62 is in a closed state.

[Problem to be solved by the invention]

However, when the tape player is installed in a car, the door 62 may have to be changed depending on the condition of the car, such as a downward-opening mode with the lower side pivoted, or an upward-opening mode with the upper side pivoted. be.

In the conventional door opening/closing device described above, the direction in which the door 62 is opened by the arm 66 is limited to downward opening, and therefore cannot meet this requirement.

[Object of the Invention] The present invention solves the drawback that the conventional door opening/closing device for the cassette insertion slot is limited to either opening the door upwardly or downwardly. The purpose of this change is to make it compatible with both top-opening and bottom-opening.

[Summary of the invention]

The present invention relates to means for a door opening/closing device for a cassette insertion port for achieving the above-mentioned object.
An actuating piece is provided approximately at the center of the door that is pivoted on either side of the door, and a connecting arm is provided between the cam arm, which is rotated by the actuating piece that interlocks with the holder, and the opener that opens and closes the door. .

[Embodiments of the invention]

Next, an example of implementing the present invention as a digital audio chip cassette player will be described with reference to FIGS. 1 to 24.

In Fig. 1, 1 is a chassis, and the rotation of a motor 2 attached to this is transmitted to a worm 3, and a gear 4 that transmits this rotation via an intermediate gear drives a rack 5 with a driving pin 5a upright in a straight line. Exercise.

As shown in FIGS. 2 to 4, a cam lever 6 having two intersecting linear sides 6a and 6b and a depression 6c at the intersection thereof is rotatably supported on the chassis 1 by a shaft 7, as shown in FIGS. That side 5
a and 5b contact the drive bin 5a and rotate the cam lever 6 by their linear motion.

A connecting lever 8 having a guide hole 8a is pivotally attached to the pin 6d of the cam lever 6, and the connecting lever 9, which has a pin 9a slidably inserted into the guide hole 8a, is attached to the shaft 10 of the chassis 1. It is pivotally connected to the pin lla of the gear 11 which is rotatably supported.

A tension spring 12 is installed between the connecting levers 8 and 9, and when the cam lever 6 rotates, the connecting levers 8 and 9
pushes and pulls pin lla to rotate gear 11.

A gear 14 that meshes with this gear 11 and is rotatably supported on a shaft 13 of the chassis 1 has a pin 14a erected thereon, and an arm 15 that is rotatably supported on the shaft 13. The bottle 14a is inserted into the arcuate hole 15a.

A torsion spring 16 wound around the shaft 13 is installed between the arm 15 and the gear 14, and biases the arm 15 in one direction with respect to the gear 14.

The gear 14 meshes with a gear 18 provided on a shaft 17 that passes through both left and right sides of the chassis 1, and a gear 19 provided on the opposite side of the shaft 17 meshes with a gear 2 of a shaft 20 provided on the opposite side of the shaft 13.
1, so that the gear 14.21 rotates in conjunction with the gear 14.21.

An arm 22 is also pivotally supported on the shaft 20 in the same way as the shaft 13, and by a torsion spring 23 mounted between the arm 22 and the gear 21, the arcuate hole 22a of the arm 22 is connected to the gear 21 into which it is inserted. Similar to the arm 15, it is biased in one direction with respect to the bin a.

When the tape cassette A is inserted, the tape cassette A is inserted and the tape cassette A is kept in a horizontal state. This guide groove 1
The holder 24 is configured to move along the line a.

The left and right bins 24a of this holder 24 are inserted into the guide grooves 15b and 22b of the arms 15 and 22, respectively, and the holder 24 is moved by the rotation of the arms 15 and 22.

Also, as shown in FIGS. 5 to 8, the bottle 24a on the arm 15 side
, a cam arm 26 is pivotally supported by a shaft 25 on the chassis l.
The cam hole 26a of the cam arm 26 is inserted, and the pin 26b of the cam arm 26 is inserted into the guide hole 1b of the chassis l and guided.

Reference numeral 27 denotes a door that normally covers the insertion slot for the tape cassette A of the tape player.The bin 27a of this door 27 is pushed down to rotate the door 27 against the bias of a spring (not shown). , an opener 28 that opens this is pivotally supported by a shaft 29 of the chassis 1.

The bin 28a attached to the opener 28 and the bin 26c of the cam arm 26 are connected by a connecting arm 30, and the bin 24a slides in the cam hole 26a to connect the cam arm 26c.
When the door 6 is rotated, the opener 28 is also rotated to open the door 27.

As shown in FIGS. 9 to 12, slide holes 31a are inserted into the two bins 1d of the horizontal portion 1c of the chassis 1, and the slider 31, which is slidable facing the holder 24, has bins 31b and 31c. is erected, and a push-out arm 34.35 having a roller 32.33 for pushing the tape cassette A attached to its tip is pivotally supported.

A cam hole 35a of the extrusion arm 35 is slidably inserted into the bottle 34a of the extrusion arm 34,
Further, a bottle 34b is provided upright on the extrusion arm 34.

This bottle 34b hits the stopper 1e of the chassis 1 while the slider 31 is moving toward the holder 24,
The extrusion arm 34 is rotated, and when the extrusion arm 34 is rotated, the extrusion arm 35 is also rotated by the sliding of the bin 34a and the cam hole 35a.

The torsion spring 36, which is wound around the bottle 31c, is installed between the push-out arm 35 and the slider 31, and biases the push-out arms 34 and 35 rotated as described above in the direction to return.

Further, the pin 37b at the tip of the rotating arm 37, which is pivotally supported in the hole 27a by the horizontal portion 1c of the chassis l, is inserted into the hole 31d of the slider 31, and the slider 31 is moved by the rotation of the rotating arm 37. .

As shown in FIGS. 9 and 13 to 16, two guide bins 38 are provided upright on the chassis 1, and two slide plates 39 and 40 are stacked on the guide bins 38. ,
These slide holes 39a, 40a are slidably inserted.

A pin 37c of the rotating arm 37 is inserted into a holding portion 39b bent on the slide plate 39, and the rotating arm 37 is rotated by the slide of the slide plate 39.

Further, two bins 39c are erected on the slide plate 39, two slide holes 40b of the slide plate 40 are slidably inserted into the bins 39c, and an engagement bin 39d is provided on the slide plate 39. has been erected.

A rotary engagement plate 41 provided with a retaining step portion 41a that engages with the bin 5a of the rack 5 is supported on the slide plate 40 by a shaft 40c. A tension spring 42 is mounted to pull the slide plate 40 to one side via a spring 40c and to rotate the rotation engagement plate 41.

The rotary engagement plate 41 is formed with a protrusion 41b that contacts the engagement pin 39d and rotates the rotary engagement plate 41 against the bias of the tension spring 42.

As shown in FIGS. 17 to 21, a rotating arm 45 is rotatably supported on a shaft 44 erected on a sub-chassis 43 fixed to the chassis l, and is wound around the shaft 44. A torsion spring 46 is installed between the 00 motion 7-445 and the sub-chassis 43, and biases the rotating arm 45 in one direction.

Then, due to this urging, the engaging portion 45 of the rotating arm 45
a contacts the protrusion 43a of the sub-chassis 43 to keep the rotating arm 45 in a fixed position. It is in a position where it is pressed.

Further, a cam portion 45c is formed on the rotating arm 45 and comes into contact with the pressing pin 24b provided on the holder 24.

Furthermore, a locking piece 48 is attached to the shaft 47 provided on the sub-chassis 43.
is rotatably supported, and the locking piece 48 and the sub-chassis 43
A tension spring 49 is installed between them and urges the locking piece 48 to rotate in one direction.

Due to this urging, the pin 48a of the locking piece 48 comes into contact with the locking portion 24c of the holder 24, and its rotation is prevented. However, when the holder 24 moves, the locking piece 48 is moved due to the above-mentioned urging. Rotate.

Due to this rotation, the locking portion 48b of the locking piece 48 comes into contact with the arc-shaped locking portion 45d of the rotating arm 45, but due to further rotation of the rotating arm 45, the locking portion 48b finally comes into contact with the arc-shaped locking portion 45d. 4
5d to prevent the rotating arm 45 from rotating under the bias of the torsion spring 46.

When the pin 5a of the rack 5 moves to the recess 6C of the cam lever 6, an elastic curved piece 50 comes into contact with the top surface of the pin 5a as shown in FIG. It is attached to chassis 1.

Next, the operation of this embodiment will be explained from the time when the ejection of tape cassette A has been completed and the system is in a waiting state for insertion of the next tape cassette A.

At this time, the rack 5 is on the right side in FIG. 2, the side 6a of the cam lever 6 is rotated to the right, and as will be described later, the slider 31 is located on the upper side as shown in FIG.
The rollers 32 and 33 are also in the state shown in the figure.

Then, due to the rotation of the cam lever 6, the connecting levers 8 and 9 pull the pin lla to rotate the gear 11, and the arm 15 moves the pin 24a to move the holder 24 to the door 2.
Position it at the insertion slot for the tape cassette closest to 7.

At this time, the pin 24a moves within the cam hole 26a of the cam arm 26 to bring the cam arm 26 into the state shown in FIG.
The tip of the opener 28 rises above the pin 27a of the door 27, and the door 27 is in a closed state due to its bias.

In this state, the connecting levers 8 and 9 can extend against the bias of the tension spring 12 in order to prevent the pin 5a from clinching with the side 6a of the cam lever 6 pushed up.

In this state, when the tape cassette A is inserted into the holder 24 by pushing down the door 27, the tape cassette is attached to the projecting pin 45b of the rotating arm 45, which was rotating as shown in FIG. 17 just before the end of the insertion. The tip end of A is brought into contact with it, and it is rotated against the bias of the spring 46, as shown in FIG.

Immediately before this rotating arm 45 is rotated to the position shown in FIG. 19, a switch (not shown) is activated by the rotating arm 45.
N, the motor 2 rotates and the rack 5 is moved to the left in FIG.

When the pin 5a reaches the position of the recess 6c of the cam lever 6, the side 6b is pushed by the pin 5a and the gear 11 rotates, rotating the arm 15 and moving the pin 24a into the guide groove 1a.
, the holder 24 starts moving, and the tape cassette A inserted therein is loaded.

Therefore, since the holder 24 also moves upward from the state shown in FIG. 19, the pin 48a of the locking side 48 is unlocked by the locking portion 24C, and the locking piece 48 is moved upward from the tension spring. 49, and its locking portion 48b comes into contact with the arcuate locking portion 45d of the rotating arm 45.

Then, as the holder 24 continues to move for loading, the pressing pin 24b hits the cam portion 45c as shown in FIG. 20, and the rotating arm 45 further rotates.

When the rotation angle of the rotation arm 45 exceeds the state shown in FIG. prevent.

Thereafter, the holder 24 is moved to the position shown in FIG.
It reaches the end of the horizontal part of the guide groove 1a, and then descends guided by the vertical part of the guide groove 1a.The tape force set l-A inserted therein is set in the tape drive mechanism, and when it is played back, the tape is moved to the head. It is wound around a drum 51 and reproduced.

When such a tape cassette A is set, the shaft 7, pins 6d, and lla are in a nearly straight line as shown in FIG. You can fully exert the necessary force when setting.

The gear 11 is rotated by an angle greater than that necessary for this set, but the extra stroke is compensated for by the pin 14a separating from one end of the arcuate hole 15a and increasing the biasing force of the torsion spring 16. There is.

The increase in the load on the bottle 5a when the pin 5a contacts the side 6b does not increase rapidly as the pin 5a separates from the elastic curved piece 50, and therefore no abnormal noise or vibration is generated. .

By horizontally moving the holder 24 as described above, the pin 24
a moves in the cam hole 26a of the cam arm 27, and when the cam arm 26 becomes horizontal as shown in FIG. open.

However, when the holder 24 is vertically lowered, the pin 24a causes the cam arm 26 to rotate as shown in FIG. Door 27 is in a closed state.

When an eject command is given from the outside in such a set state, the motor 2 rotates in the opposite direction, and the rack 5 moves toward the right in FIG. 2.

Then, when the bottle 5a reaches the recess 6c of the cam lever 6,
The cam lever 6 is thereby rotated in the direction shown in FIG.

Therefore, the gear 11 is rotated in the opposite direction by the cam lever 6, and the arm 15 causes the bottle 24a to move up the vertical portion of the guide groove 1a, so that the holder 24 moves up.

This rise causes the cam arm 26 to reach the position shown in FIG. 6 again, and the door 27 opens.

Then, by further rotation of the cam lever 6, the bin 24
moves in the horizontal part of the guide groove 1a, and the holder 24 moves in the horizontal part of the guide groove 1a.
Move horizontally so that it approaches 7.

On the other hand, the rotation engagement plate 41 is in the state shown in FIG. 13 due to the bias of the tension spring 42, and when the holder 24 starts to move horizontally as described above, its engagement step 41a comes into contact with the bottle 5a. It becomes like this.

Due to this engagement, the engagement step portion 41a moves the rotary engagement plate 41 and slide plates 39, 40 to the right in FIG. 13 against the tension spring 42.

This movement of the slide plate 39 rotates the rotation arm 37 and moves the slider 31 in a direction closer to the holder 24.

As a result of this movement, the pin 34a of the push-out arm 34 hits the stopper Ie of the chassis 1, and the push-out arm 34 rotates as the pin 31b moves forward.

This rotation of the extrusion arm 34 is transmitted to the extrusion arm 35 through its pin 34a and cam hole 35a, and since the extrusion arm 35 also rotates at the same angle as the extrusion arm 34, the roller 3
2 and 33 move the tape cassette A from the holder 24 to the door 27
push towards.

At this time, since the door 27 is open as described above, the tape cassette A is pushed out without hitting the door 27.
Thereafter, as the holder 24 moves, the door 27 attempts to close as shown in FIG. 5, but the door 27 hits the pushed-out tape cassette A and does not close.

However, when the tape cassette A is removed from the holder 24, the door 27 closes as shown in FIG. 5 due to its bias.

In this way, when the pushing out of the tape cassette A by the rollers 32 and 33 is completed, the slide hole 39a of the slide plate 39 contacts the guide bin 38 as shown in FIG. 14, and the engagement bin 39d rotates. It comes into contact with the protrusion 41b of the engagement plate 41.

However, since the pin 5a continues to move, the retaining step 4
1a continues to move the slide plate 40 together with the rotation retaining plyplate 41 so that its slide hole 40b slides the pin 39c.

On the other hand, since the locking pin 39d cannot be moved as described above, the protrusion 41b is pushed by the locking pin 39d against the tension spring 42 and rotates as shown in FIG. The pin 5a becomes uncoupled.

Then, the slide plates 39 and 40 are pulled by the tension spring 42 and return as shown in FIG. 13, and the rotation retaining plywood plate 41 also returns as shown in the figure.

This return of the slide plate 39 is transmitted to the slider 31 by the rotating arm 37, and returns it to the position shown in FIG.
4.35 is also returned as shown in the figure, so that there is no problem in inserting the tape cassette A into the holder 24.

On the other hand, the aforementioned movement of the holder 24 results in the locking portion 24c pushing the pin 48a of the locking piece 48 as shown in FIG. 19, and the locking piece 48 rotates against the bias of the tension spring 49. Therefore, the locking portion 48b comes off from the arcuate retaining portion 45d.

Therefore, the rotating arm 45 is rotated to the position shown in FIG. 17 by the bias of the torsion spring 46, and the ejecting operation is completed.

In the above embodiment, the door 27 is pivoted on the lower side, but the pin 27a is the vertical center of the door 27, and the shape of the connecting arm 29, the pivoting position of the opener 28, and the connecting arm By changing the connection position with 29 as shown in FIG. 22, even if the upper side of the door 27 is pivoted, the door 27 can be opened and closed in the same way as in the previous embodiment.

That is, FIG. 22 shows the closed state of the door 27 when ejecting is completed, and FIG. 24 shows the closed state of the door 27 when the tape cassette A is set.
FIG. 3 shows a state in which the door 27 is opened halfway.

〔Effect of the invention〕

The present invention changes the pivot position of the opener up and down like a ridge, and also changes the connection position of the opener and the connecting arm that connects the opener and cam arm to above and below the pivot position of the opener. The movement of the opener can be reversed relative to the movement of the cam arm.

Since the position of the actuating piece of the door is approximately at the center, by reversing the operation of the opener and keeping its stroke unchanged as described above, the door can be opened either upward or downward. It is.

Moreover, the only parts changed for this purpose are the connecting arms,
Since it is sufficient to turn the fulcrum of the opener and the door upside down, the change is easy and the cost of change is minimal.

[Brief explanation of the drawing]

Figures 1 to 24 show an embodiment of the present invention, with Figure 1 being an overall plan view, Figures 2 and 4 being side views showing the operation of the loading mechanism, and Figure 3 being a side view of the loading mechanism. A side view of the opposite side, Figures 5 to 7 are side views showing the operation of the door opening/closing mechanism, Figure 8 is a side view of the door opening/closing mechanism and the elastic curved piece, and Figure 9 is an exploded perspective view of the cassette ejection mechanism. , FIGS. 10 to 12 are plan views showing its operation, FIGS. 13 to 16 are side views showing its operation, and FIGS. 17 and 19 to 21 show the operation of the loading start mechanism. 18 is a side view of FIG. 17, FIGS. 22 to 24 are side views of other embodiments of the door opening/closing mechanism, and FIG. 25 is a side view of a conventional door opening/closing device for a cassette insertion slot. It is. 1a...Guide groove, 24...Holder, 24a...
Pin, 25... shaft, 26... cam arm, 26a.
...Cam hole, 26c...Pin, 27...Door, 27
a... Pin, 28... Opener, 28a... Pin, 29... Connection arm.

Claims (1)

[Claims] A door that is pivoted either above or below the cassette insertion slot and has an operating piece such as a pin at a position that approximately coincides with the center of the tape cassette inserted into the insertion slot, and the tape cassette inserted from the insertion slot. A movable piece is provided on a holder that is conveyed to hold and set in a tape drive mechanism, and moves along a hook-shaped guide groove, a cam arm is rotated by the movable piece, and a cam arm is pivoted to rotate the cam arm. A door opening/closing device for a cassette insertion slot, characterized in that a connecting arm is provided between the opener and the opener for opening and closing the door.