JPH05149309A - Detachable lever device - Google Patents

Abstract

PURPOSE:To surely hold and smoothly detach an operation part by connecting a lever which holds the operation part to a cam on the same rotary axis by means of a helical spring, and providing a cam groove for sliding the cam between first and second sliding positions. CONSTITUTION:An operation part 12 of a sound device for a vehicle can be separated from a device main body 13 and taken out by a driver so as to prevent theft of the sound device when the driver leaves the vehicle. In case that the operation part 12 is housed onto the device main body, an angle 1 formed by a lever 29 and a cam 30 is small, the lever 29 obtains a strong energizing force F1 in a direction of a hook 15A, and the operation part 12 is held with certainty. In case that the operation part 12 is demounted, an engagement claw is undone from a rotary shaft 28 by pressing an eject bottum of the operation part 12. A projection part and the operation part 12 are projected upward by energization force of the cam generated by a helical spring wound around the rotary shaft 28, and afterward, the operation part 12 is pulled in the direction of A, thereby a locking claw 22 is separated from a cutout 21 for detaching the operation part 12.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Fields of Industrial Application Conventional Technology (FIGS. 7 and 8) Problems to be Solved by the Invention (FIGS. 7 and 8) Means for Solving the Problems (FIG. 1) Actions (FIG. 1) Embodiments (FIG. 1) ~ Figure 6) Effect of the invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable lever device,
For example, it is suitable for application to a vehicle acoustic device that is stored in an instrument panel of a vehicle body.

[0003]

2. Description of the Related Art For example, an audio tape player, a CD player,
An audio device such as a tuner for radio reception is stored, and its operation part is exposed.

In this vehicle audio device, since the device body and the operation unit are integrated, the device body integrated with the operation unit is stolen together with the device when the driver leaves the vehicle. There was a fear.

Therefore, conventionally, an acoustic device mounted on a vehicle interior panel is divided into a device body and an operating portion, and the operating portion is detachably attached to the device body, so that a vehicle driver can operate the acoustic device when leaving the vehicle. The operation unit removed from the main body can be stored in a storage box or the like in the vehicle compartment to be hidden, or the operation unit can be carried around, so there is a device that does not work without the operation unit so that the main body of the device is not stolen. ..

As shown in FIGS. 7 and 8, the main body of the apparatus and the operating section are configured such that the operating section 2 is detachably attached to the front surface of the main body 1 of the apparatus. In addition to the connection terminal 3, the hook 4 and the lever device 5 are provided on the front surface of the apparatus body 1, and the connection terminal 6 and the recess 7 provided on the back surface of the operation portion 2 are provided.
The main body 1 of the apparatus by engaging with the engaging portion 8 and the engaging portion 8 respectively.
The operation unit 2 and the operation unit 2 are integrated to form the entire audio device.

As shown in FIG. 8, when the operating section 2 integrated with the apparatus main body 1 is detached from the apparatus main body 1, the eject button 9 provided on the front surface of the operating section 2 is pressed with a finger. As a result, the lock of the compression coil spring 5A incorporated in the rear portion of the lever device 5 is released, and the claw portion 5B having an L-shaped cross section that constitutes the tip end portion of the lever device 5 projects forward, whereby the operating portion 2 is clawd. While being held by 5B, the hook 4 and the concave portion 7 rotate about the rotation center to be in a half-open state.

As shown in FIGS. 7 and 8, a helical spring 5D is wound around the mounting shaft portion 5C of the lever device main body and the claw portion 5B, whereby the claw portion 5B is recessed in the operating portion 2. The operation portion 2 is biased in the direction and always holds the operating portion 2 with a constant holding force while engaging with the engaging portion 8. Further, by pulling the operating portion 2 forward from the half-opened state with a certain force or more, the engaging portion 8 and the claw portion 5B formed on the back surface of the operating portion 2 are separated from each other, and the operating portion 2 is separated from the apparatus main body 1. It is designed to be removable.

[0009]

However, as described above, the lever device 5 is provided by two independent springs, the spring 5A for projecting the operating portion 2 from the apparatus main body 1 and the spring 5D for holding the operating portion 2 on the apparatus main body 1. In the case of the above configuration, it is possible to independently set each of the projecting and holding operations of the operation unit 2, but the holding force for holding the operation unit 2 in the device main body 1 is always constant, and the device of the operation unit 2 is maintained. When the holding force to the main body 1 is to be increased, the force required to remove the operating portion 2 from the device main body 1 from the half-opened state shown in FIG. If a weak force is used, the holding force of the operation unit 2 when the device body is attached also weakens, so that the operation unit 2 is securely held by the device body 1 and the operation unit 2 is smoothly moved from the device body 1. Compatible with the operation to remove Has failed can be.

The present invention has been made in consideration of the above points, and when the operating portion is attached to the main body of the apparatus, the operating portion can be securely held with a strong holding force, and the operation can be performed from the main body of the apparatus. An attempt is made to propose an attachment / detachment lever device that can be removed smoothly with a weak force when removing a part.

[0011]

In order to solve such a problem, according to the present invention, in the attachment / detachment lever device 20 in which the device body 13 and the operation portion 12 can be detachably attached, the operation portion 12 is held in the device body 13. Lever 29
And a cam 30 that moves in connection with the lever 29, and a cam 3
The cam groove 36 for guiding the movement of 0 and the elastic member 32 suspended by the lever 29 and the cam 30 are provided.
When the lever 29 holds the operating portion 12 with a strong holding force by the urging force of the elastic member 32 and the operating portion 12 is detached from the apparatus main body 13, it is obtained by the first sliding position. The cam 30 is moved to the second sliding position of the cam groove 36 by the urging force of the elastic member 32, so that the holding force of the lever 29 with respect to the operation portion 12 is weakened.

[0012]

When the operating section 12 is attached to the apparatus main body 13, the urging force of the coil spring 32 becomes strong and the lever 29 can hold the operating section 12 with a strong force, and the operating section 12 is detached from the apparatus main body 13. In this case, the urging force of the coil spring 32 becomes weaker, and the holding force of the lever 29 with respect to the operating portion 12 can be weakened. As a result, the device body 13 and the operating portion 12 can be reliably fixed, and the device body 13 can be operated smoothly. The part 12 can be removed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 2, a vehicle acoustic device 11 is housed in an instrument panel 10 in a vehicle compartment with an operating portion 12 (FIG. 3) exposed. As shown in FIG. 3, the vehicle audio device 11 includes an operation unit 12 and a device body 13.
On the front surface of the operation unit 12, various operation buttons 12A for a tuner and a CD control commander are provided, and an eject button 14 is provided. By pushing the eject button 14, the operation unit 12 is operated. Can be detached from the apparatus main body 13.

In FIG. 4 showing a state in which the operation portion 12 is removed from the apparatus body 13, the frame body 13 is formed so that the peripheral portion of the front surface of the apparatus body 13 projects somewhat forward.
As a result, the back surface of the operation unit 12 is the frame 1
It is designed to fit into 3A.

On the right side of the frame 13A, hooks 15A and 15B are formed so as to project leftward, and on the right side of the operating portion 12, a hook having a shape that fits into the hooks 15A and 15B is formed. Mating recesses 16A and 16B are provided. Further, a plurality of connection terminal pins 17 are provided on the front surface of the apparatus main body 13 near the hooks 15A and 15B, and a plurality of connection terminal plates 18 are provided on the back surface of the operation unit 12 which faces the hooks 15A and 15B. When the device 12 is attached to the device body 13, the connection terminal pin 17 and the connection terminal plate 18 come into contact with each other, and the control command of the operation unit 12 can be transmitted to the device body 13.

In addition to the above construction, a lever device 20 is provided at the left end of the front surface of the apparatus main body 13 so as to be retractable from the inside of the apparatus main body toward the front of the apparatus main body through an opening 19 cut out in a rectangular shape. There is. In addition, the lever device 20
A notch 21 is provided at the left end portion of the rear surface of the operation portion 12 facing the notch 21. The notch 21 is notched so that a lock claw 22 formed at the tip of the lever device 20 can be fitted into and removed from the notch 21. ..

Here, when the operation portion 12 is attached to the apparatus main body 13, the engaging recess 1 is first attached to the hooks 15A and 15B.
6A and 16B are fitted, and the left side of the operation portion 12 is gradually overlapped with the left side of the apparatus main body 13 with this as the center of rotation. At this time, the lever device 20 is pushed into the main body 13 of the device while the back surface of the operating portion 12 is in contact with the locking pawl 22 of the lever device 20, and when the entire back surface of the operating portion 12 overlaps the front surface of the main device body 13, the locking pawl is formed in the notch 21. Two
2 are fitted to each other so that the operation section 12 can be held in the apparatus main body 13.

When the operation section 12 is detached from the apparatus main body 13, the eject button 14 provided on the front surface of the operation section 12 is pressed so that the rod-shaped member 23 projects from the rear surface of the operation section 12 toward the apparatus main body 13. The rod-shaped member 23 pushes the eject member 24, which is exposed on the front surface of the apparatus main body 13, backward, so that the lever device 20 protrudes forward while the operation unit 12 is held, as shown in FIG. It is designed to get the state of.

Further, from this half-opened state, the notch 21 and the lock claw 22 are separated from each other by pulling the operating portion 12 in the forward direction indicated by the arrow A in FIG. It can be detached from 13. Here, as shown in FIG. 1, the lever device 20 has an opening 19 (FIG. 4) provided on the front surface of the device body 13.
The device main body 1 has a peripheral portion 25 that is one circumference larger than
A base portion 26 fixed to the position of the opening portion 19 from inside 3,
It is composed of a protruding portion 27 which can freely move in and out through an opening 29.

The protruding portion 27 has the same rotary shaft 28 on which the lever 2 is attached.
9, a cam 30, and a link 31 are rotatably attached. A spiral spring 32 is wound around the rotary shaft 28, one end of which is received by a lever 29 and the other end of which is received by a cam 30. As a result, the angle formed by the front surface of the lever 29 and the front surface of the cam 30 in FIG. θ
As the coil spring 32 becomes smaller, the coil spring 32 is wound, and the lever 29 and the cam 30 are urged by the elastic force of the coil spring 32 in the direction of increasing the angle θ.

Here, the base portion 26 and the protruding portion 27 are the base portion 26.
The entire protruding portion 27 is inserted into the inside of the peripheral edge portion 25 so as to be integrated. That is, the engaging holes 34A and 34B (not shown) provided at the left and right positions of the link 31 are brought into contact with the inside of the engaging holes 33A and 33B provided at the left and right positions behind the peripheral edge portion 25 of the base portion 26. After that, the engaging pin 35 is inserted through the engaging holes 33A, 34A, 34B, 33B, and the cam 30 is inserted into the arcuate cam groove 36 formed on the front left side wall inside the base 26 and leftward at the left end position of the cam 30. The protruding portion 27 is supported by the base portion 26 by slidingly contacting the cam pin 37 protrudingly provided on the base portion 26.

As a result, the projecting portion 27 becomes rotatable about the engaging pin 35 as a center of rotation, while the cam 30 interlocks with the protruding portion 27 so that the cam pin 37 slides along the cam groove 36. It rotates about 28 as the center of rotation. Here, the cam groove 36 follows the protrusion 27 as the protrusion 27 rotates to the lower position with the engagement pin 35 as the rotation center.
The angle θ formed by the lever 29 and the cam 30 becomes smaller as the cam pin 37 slides to the position below the cam groove 36, as 7 rotates to the position where it is stored inside the base portion 26). Is shaped to have a unique shape.

As a result, as the protruding portion 27 rotates to the position where it is stored inside the base portion 26, the lever 29 and the cam 30 are urged by the elastic force of the helical spring 32 in the direction in which the angle θ increases. Is designed to get you. Further, the eject member 24 is attached to the front left side of the base portion 26 via a plate member 38.

The plate-like member 38 has the eject member 24 on the front left side, and at the rear right position, the spiral spring 3 is provided.
9 is rotatably supported by a rotary shaft 40 around which the winding shaft 9 is wound.

The coiled spring 39 has one end received by the plate member 38 and the other end received by the base portion 26, whereby the plate member 38 is pushed downward when the eject member 24 is pushed down. When rotated from the right side, it rotates counterclockwise and returns to the original position when the eject member 24 is opened.

Here, an L-shaped locking claw 41 is erected at the right end position of the plate member 38, and the locking claw 41 has a protruding portion 27.
Is rotated inward of the base 26, engages the rotary shaft 28 to lock the protrusion 27 inward of the base 26, and is separated from the rotary shaft 28 when the eject member 24 is pushed down. It is done like this.

In the above-described structure, the lever device 20 has the operation portion 12 on the device body 13 as shown in FIG.
When it is completely set, the shaft 28 is stored inside the base portion 26 (FIG. 1) by the locking claws 40 (FIG. 1). At this time, the angle θ1 formed by the lever 29 and the cam 30 is It becomes a small value, so that the lever 29 is hook 15A,
A strong biasing force F1 is obtained in the 15B direction. Therefore, lock claw 2
2 securely fits into the notch 21, and the operating portion 12 is attached to the device main body 1
3 can be securely held.

At this time, the cam 30 is applied with a biasing force K1 in the direction indicated by the arrow K1, thereby applying a force for projecting the projecting portion 20 upward. Here, when the operation unit 12 is removed from the apparatus main body 13, the operation unit 12
By pressing the eject button 14 provided on the front surface, the locking claw 40 (FIG. 1) is disengaged from the rotating shaft 28, and the cam 3
The urging force K1 of 0 causes the projecting portion 20 and the operating portion 12 to project upward, resulting in a half-open state as shown in FIG. 6 (B).

At this time, the angle θ2 formed by the lever 29 and the cam 30 becomes a large value, the urging force F2 of the lever 29 weakens, and the locking claw 22 is easily cut out by pulling the operating portion 12 in the direction of arrow A. Away from the operation unit 12
Can be removed from the device body 13.

According to the above configuration, when the operating section 12 is mounted on the apparatus main body 13, the operating section 12 can be securely held with a strong holding force F1, while the operating section 12 is removed from the apparatus main body 13. It is possible to realize an attachment / detachment lever device in which the operation portion 12 can be easily removed when detaching.

In the above embodiment, the operation unit 12
Also, terminals 15A to 16B are provided on the apparatus body 13 and the operation unit 1
Although the control command of No. 2 is transmitted to the apparatus main body 13 through the terminals 15A to 16B,
The present invention is not limited to this, and can be applied to a device that transmits a control command of the operation unit to the device body by a wireless method when the operation unit is attached to or detached from the device body.

In the above-described embodiment, the lever device 20 is used when the operating portion 12 is removed from the device body 13 of the audio device 11, but the present invention is not limited to this, and between the detachably attached members. It can be widely applied as a detaching mechanism of.

[0034]

As described above, according to the present invention, the lever for holding the operating portion and the cam are connected by the helical spring on the same rotary shaft, and the cam is connected to the first sliding position and the second sliding position.
By providing a cam groove that slides between the sliding positions of
When the cam is in the first sliding position, the lever can hold the operating portion with a strong force by the biasing force of the coiled spring, and when the cam is in the second sliding position, a weak holding force is obtained. Thus, it is possible to realize a detachable lever device that enables reliable holding and smooth removal of the operating portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of an embodiment of a lever device according to the present invention.

FIG. 2 is a perspective view showing a state in which an audio device equipped with the lever device of FIG. 1 is stored in a vehicle interior panel.

3 is a perspective view of an audio device equipped with the lever device of FIG. 1. FIG.

FIG. 4 is a perspective view showing an engaging portion of the apparatus main body and the operating portion of FIG.

FIG. 5 is a schematic cross-sectional view for explaining the operation of the embodiment.

FIG. 6 is a schematic cross-sectional view for explaining the operation of the embodiment.

FIG. 7 is a perspective view showing an apparatus main body and an engaging portion of an operation unit of a conventional audio apparatus.

FIG. 8 is a cross-sectional view showing a configuration of a conventional lever device.

[Explanation of symbols]

1, 13 ... Device main body, 2, 12 ... Operation unit, 3, 6,
17, 18 ... Terminals, 4,15A, 15B ... Hook,
5, 20 ... Lever device, 7, 16A, 16B ... Engagement concave part, 9, 24 ... Eject button, 11 ... Acoustic device, 19 ... Opening part, 21 ... Notch, 22 ... Lock claw , 23 ... rod-shaped member, 24 ... eject member, 25
... peripheral part, 26 ... base part, 27 ... protruding part, 28,4
0 ... Rotation axis, 29 ... Lever, 30 ... Cam, 31 ...
... Links, 32,39 ... String springs, 33A, 33B,
34A ... Engagement hole, 35 ... Engagement pin, 36 ... Cam groove, 37 ... Cam pin, 38 ... Plate member, 41 ... Engaging claw.

Claims (1)

[Claims] 1. A detachable lever device capable of removably attaching an apparatus body and an operating section, wherein a lever for holding the operating section on the apparatus body, a cam connected to the lever for moving, and a cam for the cam. A cam groove for guiding movement, and an elastic member suspended by the lever and the cam, wherein the cam is in a first sliding position of the cam groove when the operation portion is mounted on the apparatus main body. The lever holds the operating portion with a strong holding force by the urging force of the elastic member, and when the operating portion is detached from the apparatus main body, the elastic member is attached by the first sliding position. An attaching / detaching lever device, wherein the holding force of the lever with respect to the operating portion is weakened by moving the cam to a second sliding position of the cam groove by a force.