JPH02148452A - Driving device for tape player - Google Patents

Abstract

PURPOSE:To smooth operation and to prevent an impulse noise from being generated by applying a load to the move of an operating member by a spring member when the operation of a cam lever, whose one side is locked by the operating member, is switched to the lock after operation is completed. CONSTITUTION:A cam lever 6 has a side 6a, which contacts an operating member 5 to execute linear motion and holds an angle, and a side 6b to be operated by the operating member 5, and the cam lever is linked to an operating mechanism such as the loading mechanism, etc., of a tape player. When the operating member 5 is moved and the contact is switched from one side to the other side, a spring member 16 contacts the operating member 5 and goes to be the load for the move of the operating member 5. Accordingly, for a rapid change from a condition that there is the large load for the operating member 5 to operate the cam lever 6 to a condition that the load goes to be small resistance for the operating member 5 to slide on one side of the cam lever 6, a change rate can be reduced by the load of the spring member 16 contact. Thus, the operation of the operating member 5 is smoothly executed and the impulse noise can be prevented from being generated.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is directed to a holder for transporting a tape cassette of a cassette loading device of a tape player from an insertion slot to a tape drive mechanism, such as when the operation is completed. The present invention also relates to a drive device for a tape player that operates an operating mechanism that is required to be reliably stopped at that position.

[Conventional technology]

In a conventional drive device of this type, a cam lever is moved by an operating member such as a pin that moves linearly, and after the operation is completed, the operating member moves on one side of the cam lever, causing the cam lever to move. There is one in which an operating member stops on one side to prevent the movement.

[Problem to be solved by the invention]

In the conventional driving device as described above, the operation occurs when the operating member completes the movement of one side of the cam lever and moves the cam lever, or conversely, when the operating member finishes moving the cam lever and starts moving above it. There is a drawback that the load on the member changes rapidly and the operation of the operating member cannot be switched smoothly.

In addition, due to the unsmoothness of this operation switching and when switching,
There have been drawbacks such as an impact sound being generated when the directions of the backlash of the cam lever and the drive mechanism of the operating members are reversed all at once.

[Purpose of the invention]

The present invention solves the above-mentioned problems in the conventional drive device of a tape player, and applies a load to the operating member with a spring member when switching the operation of the operating member relative to the cam lever, thereby preventing sudden changes in load on the operating member. In this way, the purpose is to facilitate smooth operation and to prevent impact noise from being generated.

[Summary of the invention]

The present invention relates to means for a drive device for a tape player to achieve the above-mentioned object, in which the cam lever is moved by a linearly moving actuating member and whose side is locked by the actuating member after the completion of its movement. When switching between operation and locking, a spring member is placed in contact with the movement of the operating member to provide a load.

[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, reference numeral 1 denotes a chassis, and the rotation of a motor 2 attached to the chassis is transmitted to a worm 3.A gear 4, which transmits this rotation via an intermediate gear, drives a rack 5 with a drive bin 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 l by a shaft 7, as shown in FIGS. That side 6
a and 6b 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 a 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 the bottle lla to rotate the gear 11.

A gear 14 that meshes with this gear 11 and is rotatably supported on the shaft 13 of the chassis l has a pin 14a erected thereon, and an arm 15 that is rotatably supported on the shaft 13 is provided with a pin 14a. 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.

The tape cassette A is inserted, and the bins 24a installed on both left and right sides of the holder 24, which moves while always keeping the inserted tape cassette A in a horizontal state, are slidably inserted into the L-shaped guide groove 1a of the chassis l. and this guide groove 1
The holder 24 is configured to move along the line a.

The left and right bins 24a of the 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 on the chassis 1 by a shaft 25.
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 1 and guided.

27 is a door that normally covers the insertion slot for tape cassette A of a tape player, and a pin 27a of this door 27
An opener 28 is pivotally supported by a shaft 29 of the chassis 1. The opener 28 rotates the door 27 against the bias of a spring (not shown) to open the door 27.

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

As shown in FIGS. 9 to 12, the slide hole 31a is inserted into the two pins 1d of the horizontal part IC of the chassis l, and the slider 31 that can slide facing the holder 24 has pins 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 push-out arm 35 is slidably inserted into the pin 34a of the push-out arm 34,
Further, a pin 34b is provided upright on the push-out arm 34.

This pin 34b hits the stopper 1e of the chassis 1 while the slider 31 is moving toward the holder 24,
It rotates the extrusion arm 34, and when the extrusion arm 34 rotates, the extrusion arm 35 also rotates due to the slide of the pin 34a and cam hole 35a.

The torsion spring 36 wound around the pin 31c is installed between the push-out arm 35 and the slider 31, and biases the push-out arm 34, 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 1, 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 pins 38 are provided upright on the chassis 1, and two slide plates 39 and 40 are stacked on the guide pins 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 pins 39c are provided upright on the slide plate 39, two slide holes 40b of the slide plate 40 are slidably inserted into the pins 39c, and one engagement pin is inserted into the slide plate 39. 39d is erected.

A rotating engagement plate 41 provided with a retaining step 41a that engages with the pin 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 rotation retaining ply plate 41 is formed with a protrusion 41b that contacts the retaining pin 39d and rotates the rotation 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 rotating arm 45 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 starting from the time when tape cassette A has been ejected and the next tape cassette A is ready to be inserted.

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.
7. Place it in the insertion slot of tape cassette A closest to tape cassette A.

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 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 inserted into the protrusion bin 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 bottle 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.
A 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 cassette A inserted therein is set in the tape drive mechanism, and during playback, the tape is moved to the head drum 51. It is something that is played back by being wrapped around it.

When setting tape cassette A like this, the shaft 7, pins 6d and lla are in a nearly straight line state as shown in FIG. 4, and the driving force of pin 6d is strongest and acts on pin lla, so that 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 bottle 5a contacts the side 6b does not increase rapidly as the bottle 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 bin 24
a moves inside the cam hole 26a of the cam arm 27, and when the cam arm 26 becomes horizontal as shown in FIG. Open 27.

However, when the holder 24 is vertically lowered, the cam arm 26 is rotated by the bin 24a 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.

Due to this rise, the cam arm 26 reaches 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 rotary 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 stepped portion 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 bottle 34a of the push-out arm 34 hits the stopper le of the chassis 1, and the push-out arm 34 rotates as the bottle 31b moves forward.

This rotation of the extrusion arm 34 is transmitted to the extrusion arm 35 through the pin 34a and the 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 rollers 32 and 33 finish pushing out the tape cassette A, the slide hole 39a of the slide plate 39 contacts the guide pin 38 as shown in FIG. 14, and the engagement pin 39d rotates. It comes into contact with the protrusion 41b of the engagement plate 41.

However, since the bottle 5a still continues to move, the engagement step 4
1a continues to move the slide plate 40 together with the rotary engagement plate 41 so that its slide hole 40b slides the bin 39c.

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

Then, the slide plates 39 and 40 are pulled by the tension spring 42 and return as shown in FIG. 13, and the rotary engagement 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 and 35 are 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 engaging 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.

[Effects of the Invention] In the present invention, like a ridge, an operating member that moves linearly, such as a pin, finishes moving the cam lever, completes an operation such as loading, and then the operating member moves along one side of the cam lever, and then the operating member moves along one side of the cam lever. A spring member is brought into contact with the operating member to apply a load to the operating member at a switching time when the member locks rotation of the cam lever.

Therefore, it is possible to reduce the rapid change in load from a state where there is a large load in which the operating member operates the cam lever to a small resistance in which the cam lever slides on one side by using the load due to contact with the spring member.

Further, the change in load caused by the spring member has a small rate of change even when the operating member moves in the opposite direction.

In this way, the large load does not change suddenly with respect to the movement of the operating member, so that the operating member moves smoothly.

At the same time, the generation of impact noise due to sudden changes in load or simultaneous reversal of the direction of play is eliminated, making it possible to provide a tape player with a high-class feel.

[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, and FIGS. 22 to 24 are side views of other embodiments of the door opening/closing mechanism. 5... Rack, 5a... Pin, 6... Cam lever, 6a, 6b... Side, 6c... Recess, 8, 9...
Connection lever 11...gear, 15.22...arm,
24...Holder. Patent applicant: Pioneer Corporation Figure 3 Figure 17 Figure 19

Claims (1)

[Claims] A cam lever having an operating member that makes a linear motion, a side that contacts the operating member to maintain its angle, and a side that is operated by the operating member, and that is connected to an operating mechanism such as a loading mechanism of a tape player; Driving a tape player characterized by comprising a spring member that contacts the operating member and serves as a load for the movement of the operating member when the operating member moves and switches from one side to the other side. Device.