JPH087988B2 - Play control device lock open / close mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock opening / closing mechanism of a playback control device having a flap type operation panel body.

(Prior Art) With the permeation of cars into daily life, the demand for car audios that bring more comfortable time is increasing, and those with high quality and sensitivity are strongly desired.

Here, the car audio is a general term for an in-vehicle system from a source reproduction source to a speaker that systemizes a tuner, a tape deck, a CD player and other optional products. The source reproduction device section is also generally called a car stereo.

By the way, as a recent tendency of car stereos, combination car stereos have become mainstream instead of component car stereos. This is due to the realization of multi-functionality, high performance, and high density due to the development of electronic technology.

Here, the component car stereo refers to a component such as a tape deck, a CD player, a tuner, an amplifier, etc., which is divided and has a degree of freedom in combination. Further, the combination car stereo refers to one in which a tape deck or a CD player and a tuner and / or an amplifier are integrally configured.

As for the above tuners, the mainstream has changed from a mechanical preset memory to a PLL tuner, and manual tuning has been limited to low-end tuners.
In addition, the cassette tape deck is a logic-controlled type, and auto-reverse machines are the mainstream. The amplifier section is becoming more and more electronic and has a higher density due to the trend toward higher power for four speakers.

FIG. 5 shows a lock opening / closing mechanism of a reproduction control device having a flap type operation panel body and instructing reproduction of car audio.

As shown in the figure, the reproduction control device includes a lock mechanism 1 and an opening / closing mechanism (not shown) having a link arm.
And a control device body 2 having a tape insertion hole (not shown), a plurality of operation buttons 3, 3, ...
An operation panel body 4 is attached to the control device body 2 via 2a so as to be openable and closable.

The lock mechanism 1 includes a movable shaft 5 that moves in the directions of arrows a and b.
A hook arm 9 is provided which is connected to the end of the movable shaft 5 having a plunger 6 and which has an engaging portion 7 and is rotatable via a shaft 8.

The operation panel body 4 is provided with an engagement pin 10 that is engaged with the engagement portion 7 of the hook arm 9.

When mounting the cassette tape, when the open button of the operation panel body 4 is operated, the plunger 6 pulls the movable shaft 5 in the direction of arrow b, so that the hook arm 9 rotates in the direction of arrow d. The lock of the engagement pin 10 is released. Next, the link arm of the opening / closing mechanism rotates the operation panel body 4 in the direction of arrow c with the shaft 2a as the fulcrum.

On the other hand, when closing the operation panel body 4, when the close button is operated, the link arm of the opening / closing mechanism rotates the operation panel body 4 in the arrow d direction with the shaft 2a as the fulcrum.
When the operation panel body 4 rotates to the final position, the plunger 6 pushes the movable shaft 5 in the direction of arrow a. As a result, the engaging portion 7 of the hook arm 9 engages with the engaging pin 10, and the operation panel body 4 is locked by the control device body 2.

(Problems to be Solved by the Invention) As described above, in the above-described conventional playback control device, since the operation panel body 4 is of the flap type,
The tape insertion hole can be provided on the control device main body 2 side, so that the space on the operation panel main body 4 side can be effectively used.

However, in the conventional reproduction control device, since the link arm of the opening / closing mechanism opens and closes the operation panel body 4 against its own weight, the motor for driving the link arm is for high load.

As described above, when the motor is designed for a high load, the motor itself becomes large due to an increase in the number of windings of the exciting coil, etc., so that the device can be made thinner and the cost can be reduced. Will interfere with

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lock opening / closing mechanism of a reproduction control device, which can make the device thinner and reduce the cost.

(Means for Solving the Problem) The lock opening / closing mechanism of the reproduction control device of the present invention is
In order to achieve the above object, in an opening / closing mechanism that opens and closes an operation panel main body that is openably and closably attached to a control device main body, the operation panel main body is biased toward a closed side. A biasing means is provided, and the composition of the moment by the biasing means and the moment by the own weight of the operation panel body is close to zero.

(Operation) In the lock opening / closing mechanism of the reproduction control device of the present invention, the moment due to the weight of the operation panel body is offset by the biasing means, so that a substantially flat combined moment is obtained, so that the combined moment should be close to zero. As a result, the output of the drive motor can be reduced.

(Examples) Hereinafter, details of examples of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment in which the lock opening / closing mechanism of the reproduction control device of the present invention is applied to a vehicle-mounted reproduction control device.

As shown in the figure, the playback control device has a control device body 17 having a lock opening / closing mechanism 15 also serving as a lock and a tape insertion hole 16, a plurality of operation buttons (not shown), and a shaft 15a. An operation panel body 18 is rotatably attached to a control device body 17 through which the operation panel body 18 is mounted.

The lock opening / closing mechanism 15 is provided with a chassis 22, which is provided with a semi-circular hole 19, an open detection switch 20 having a switch lever 20a, and a close detection switch 21 having a switch lever 21a. . A drive motor 24 having a worm gear 23 is attached to the chassis 22. A shaft 25 is arranged in the vicinity of the worm gear 23, which has a clutch receiving member 27 having fixing pins 26, 26, ..., and a large gear having a central hole 28 meshing with the worm gear 23.
29, a clutch plate 31 having holes 30 into which the fixing pin 26 is inserted, a compression spring 32, and a small gear 33 are attached in this order.

The clutch plate 31 is fixed to the fixing pin 26 of the clutch receiving member 27 via the large gear 29, and the compression spring
It is pressed against the side surface of the large gear 29 by the urging force of 32.

Then, due to the action of the clutch plate 31, the clutch receiving member 27 and the small gear 33 rotate as the large gear 29 rotates. Further, the clutch receiving member 27 and the small gear 33 can be rotated even when the rotation of the large gear 29 is stopped by the action.

An intermediate shaft 34 is arranged near the shaft 25, and an intermediate gear 35 meshing with a small gear 33 is rotatably attached to the intermediate shaft 34. A shaft 36 is arranged near the intermediate shaft 34,
A large gear 37 that meshes with the intermediate gear 35 is rotatably attached to this.

On one side surface of the large gear 37, a protrusion 38 having pressing portions 38a, 38b for pressing the switch levers 20a, 21a of the open / close detection switches 20, 21 is provided. At the center of the protrusion 38,
A pin 40 having a stopper 39 is attached to the end. An opening / closing lever 43 having an engaging protrusion 42 is engaged with the pin 40 via a long groove 41 formed at one end. The other end of the opening / closing lever 43 is rotatably attached to a bracket 46 on the operation panel body 18 side.

One end of the shaft 15a has a control device main body 17
On the other side, the other end is locked to the bracket 46, respectively, and the spring 47 cancels out its own weight when the operation panel body 18 opens and closes.
Is installed. In addition, the operation panel body 18 is a spring
It is always biased to the closing side by 47.

FIG. 4 shows the relationship between the flap opening of the operation panel body 18 and the torque of the drive motor 24.

As shown in the figure, the moment MW of the operation panel body 18 itself increases in the opening side direction according to the opening degree of the operation panel body 18. Therefore, by using the spring 47 having a spring constant such that the moment MS of the spring 47 increases in the closing direction in accordance with the flap opening of the operation panel body 18, the combined moment M2 of MW + MS is almost in the closing direction. Made flat.

Therefore, the driving force of the drive motor 24 can be reduced by opening and closing the operation panel body 18 with the torque along the combined moment M2. Further, by bringing the composite moment M2 close to zero, it becomes possible to use a drive motor with a smaller output.

Next, the operation of the lock opening / closing mechanism 15 will be described with reference to FIGS. 2 and 3.

First, when mounting the cassette tape, when the open button (not shown) of the operation panel body 18 is operated, the drive motor 24 is driven and the worm gear 23 thereof rotates counterclockwise. With the rotation, the large gear 29 meshing with the worm gear 23 rotates counterclockwise. This rotational force is transmitted to the large gear 37 via the small gear 33 and the intermediate gear 35, and the large gear 37 rotates counterclockwise. When the large gear 37 rotates counterclockwise, the pin 40 attached to the center of the protrusion 38 is displaced, and one end of the opening / closing lever 43 is pushed down via the long groove 41. As a result, the engaging protrusion of the opening / closing lever 43
42 is disengaged from shaft 36 and disengaged.

Further, when the large gear 37 rotates counterclockwise, the pin 40 is displaced, and the opening / closing lever 43 is pressed in the direction of arrow a via the long groove 41. By the movement of the opening / closing lever 43 in the direction of arrow a, the operation panel body 18 rotates in the direction of arrow c against the urging force of the spring 47, whereby the tape insertion hole 16 is exposed to the outside.

At this time, the operation panel body 18 rotates with a combined moment M2 of MW + MS, as shown in FIG.

On the other hand, when the operation panel body 18 is closed, if the close button (not shown) is operated, the drive motor 24 is driven,
The worm gear 23 rotates clockwise. Along with the rotation, the large gear 29 meshing with the worm gear 23 rotates clockwise, and this rotational force is transmitted to the large gear 37 via the small gear 33 and the intermediate gear 35, and the large gear 37 rotates clockwise. . The clockwise rotation of the large gear 37 displaces the pin 40 attached to the central portion of the projecting portion 38 to rotate the operation panel body 18 in the direction of arrow d. The engaging protrusion 42 of the opening / closing lever 43 is positioned immediately before the engaging position of the shaft 36. In addition, pin 40
When is displaced, one end of the opening / closing lever 43 is pushed up via the long groove 41. As a result, the engaging protrusion 42 of the opening / closing lever 43 is
36 is engaged and the lock is completed.

At this time, the moment M1 against the urging force of the operation panel body 18 in the direction of the arrow d by the spring 47 is substantially the same as the combined moment M2 of MW + MS.

As described above, in this embodiment, the operation panel body is always biased toward the closing side by the spring that cancels out the weight of the operation panel body. It can be opened and closed by a small drive motor.

Therefore, since the drive motor can be used for a low load, the number of windings of the exciting coil can be small, and the motor itself can be made small by this, so that the device can be made thin and the cost can be reduced. Can be achieved.

Further, in this embodiment, since the lock mechanism for locking the operation panel body and the opening / closing mechanism for opening and closing the operation panel body are integrally formed on the control device body side, the number of parts can be significantly reduced. As a result, the cost can be further reduced, and the loss of the interlocking force can be reduced, so that the reliability in locking and opening / closing the operation panel body can be improved.

Further, since the lock mechanism and the opening / closing mechanism are integrated with each other, a space for mounting the lock mechanism, which has been separately provided in the related art, becomes free, so that the space can be effectively used. Further, by omitting the space, the device can be made smaller and thinner.

In addition, in the present embodiment, the case where the spring constant is simply set to a value capable of canceling out the self-weight when the operation panel body is opened and closed is explained, but when the self-weight of the operation panel body is changed, the spring constant is correspondingly changed. May be changed. Thus, even if the weight of the operation panel body changes, the drive motors having the same output torque can be used, so that the cost of various products can be reduced.

Further, in the present embodiment, the case where the present invention is applied to the on-vehicle reproduction control device has been described, but the present invention is not limited to this example, and may be applied to other reproduction control devices for home use and the like.

(Effects of the Invention) As described above, according to the lock opening / closing mechanism of the reproduction control device of the present invention, the drive motor having a small output can be realized by bringing the combined moment due to the own weight of the biasing means and the operation panel main body close to zero. Since it can be used, the device can be made thinner and the cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a lock opening / closing mechanism of a reproduction control device of the present invention, FIG. 2 is a side view showing a closed state of an operation panel main body of FIG. 3 is a side view showing the open state of the operation panel body of FIG. 1, FIG. 4 is a view showing the relationship between the flat opening of the operation panel body of FIG. 1 and the torque of the drive motor, and FIG. It is a side view showing a lock mechanism of the reproduction control device. 15 …… Lock opening / closing mechanism, 17 …… Control device body,
18 …… Operation panel body, 23 …… Worm gear, 24 …… Drive motor, 37 …… Large gear, 38 …… Projection part, 40 …… Pin,
41 ...... long groove, 42 ... engaging projection, 43 ... opening / closing lever, 47 ...
…Spring.

Claims (1)

[Claims] 1. An opening / closing mechanism for opening and closing an operation panel body which is openably and closably attached to a control device body by receiving a driving force of a drive motor, wherein an urging means for urging the operation panel body toward a closing side. A lock opening / closing mechanism of a reproduction control device, wherein a moment generated by the urging means and a moment generated by the own weight of the operation panel body are combined to be close to zero.