JPH0247542Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button switch device with an improved locking function.

For example, in a push button switch device in which switching is performed by pressing an operating member, a locking function portion for locking the operating member in a pressed state has conventionally been constructed as shown in FIG. That is, reference numeral a denotes a hooking pin provided on an operating member (not shown), which is displaced downward (in the direction of arrow b) by pressing the operating member, and is always urged upward. On the other hand, c is a locking body provided so as to be movable back and forth in the left-right direction (direction of arrow d and direction opposite to arrow d), and is always biased in the direction of arrow d. The locking body c is provided with a locking portion e having an inclined portion h at a portion corresponding to the engaging pin a, and the locking portion e is connected to the locking body c.
It is parallel to the direction of movement. When the operating member is pressed, the engaging pin a is displaced downward and presses the inclined portion h, so that the locking body c is moved in the direction opposite to the arrow d, allowing the engaging pin a to pass downward. Then, when the engaging pin a comes off the inclined part h, the locking body c returns to its original position (moves in the direction of the arrow d) by the elasticity acting on itself, so that the engaging pin a is engaged and held in the locking part e. Ru.

However, in the conventional structure described above, since the moving direction of the engaging pin a of the operating member and the moving direction of the locking body c are at right angles, due to manufacturing errors, the left end of the locking part f is bent as shown in FIG. 2a. If the direction is diagonally upward (the moving direction of the engaging pin a and the locking part f)
When the orientation direction of the locking pin (a) is at an obtuse angle), the locking pin (a) and the locking portion (f) tend to become disengaged on their own. Therefore, in order to solve the above drawbacks, we decided to
As shown in Figure b, if the left end of the lock part g is oriented diagonally downward (the direction of movement of the engaging pin a and the direction of orientation of the lock part g form an acute angle),
Move the locking body c in the opposite direction of the arrow d and attach the locking pin a.
When disengaging the locking member from the locking part g, the engaging pin a must be pushed downward by the locking part g against a spring (not shown) for automatically returning the operating member. Since the spring force of the automatic return spring (not shown) is added to the movement of the
In addition to worsening operability, the movable contact (not shown) that is linked to the operating member also moves back and forth over the fixed contact by △ minutes, making it necessary to increase the size of the fixed contact and increasing the time required to switch the contact. This will have negative effects such as a delay in timing and disadvantages of the insulating gap, and at the same time, it will be necessary to take an extra push stroke of △.

The present invention was developed in view of the above circumstances, and its purpose is to reliably prevent the operating member and the locking portion from becoming disengaged without permission, and to prevent the operability and contact switching performance from being impaired when the lock is released. There is no push button switch device to provide.

To summarize the present invention, the locking body is biased toward a locking position that makes an acute angle with the direction in which the operating member moves from the return position to the operating position, and a portion of the locking body that corresponds to the operating member The feature is that the lock part is provided parallel to the moving direction of the locking body, so that the lock part is set to engage at an acute angle with respect to the return moving direction of the operating member. It is something that you have.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 7. Reference numeral 1 denotes a long rectangular main body case provided on an instrument panel of an automobile (not shown), and storage chambers 2 to 4 (see Fig. 5) are partitioned and formed in a row in the longitudinal direction. Insertion holes 5 to 7 are formed in the upper wall to communicate with the storage chambers 2 to 4, respectively. 8-10
are the operation members for the head lamp, small lamp, and release, respectively, and these are the main body case 1.
It is inserted into the insertion holes 5 to 7 so as to be able to return to the upper and lower directions (in the direction of arrow A and the direction opposite to arrow A shown in FIG. While moving between the two, it is always urged in the direction of the return position (in the direction of arrow A) by compression springs 11 to 13. As shown in FIG. 5, holding members 14 to 16 are fixed to the lower end of each operating member 8 to 10, respectively, and are located in the storage parts 2 to 4, respectively. Movable contacts 17 and 18 for the lamp are provided, while a movable contact 19 for the small lamp is provided on the holding member 15, and each of these movable contacts 17 to 19 is connected to a compression spring 20 (fourth
The movable contact 18 is biased rearward by a compression spring 20 (only the compression spring 20 is shown in the figure). Reference numeral 21 denotes an insulating board mounted on the rear surface of the main body case 1, and fixed contacts (none of which are shown) corresponding to the movable contacts 17 to 19 are provided on the inner surface of this board. When the operating members 8 and 9 for the headlamp and the small lamp are respectively located at the return position, the movable contacts 17 to 19 are separated from the fixed contacts, and the operating member 8 for the headlamp is located at the operating position. When the movable contact 1
7 and 18 touch the fixed contact and light up both a head lamp and a small lamp (not shown),
On the other hand, when the small lamp operation member 9 is located at the operating position, the movable contact 19 contacts the fixed contact and lights up a small lamp (not shown).
Reference numerals 22 to 24 denote hooking pins fixed to the holding members 14 to 16 by caulking, respectively, and the tips of the hooking pins 22 to 24 respectively protrude horizontally forward (horizontally to the right in FIG. 4). ing. Reference numeral 25 denotes a substantially rectangular plate-shaped locking body mounted on the front part of the main body case 1 so as to be movable back and forth in the left-right direction (arrow B direction and counter-arrow B direction in FIG. 3), which is shown in FIG. 3. When moved from the locked position to the right (in the opposite direction of arrow B), it is located at the unlocked position. Therefore, the direction of movement of each operating member 8 to 10 from the return position to the operating position (direction opposite to arrow A) and the direction of movement of locking body 25 from the locked position to the unlocked position (direction opposite to arrow B) The angles formed are acute. Therefore, this lock body 2
5 is provided with openings 26 to 28 (see FIG. 7) shown in FIGS. On the right side of 26 and 27, there is a horizontal left side (that is, the same direction as the movement direction of the locking body 25 to the locking position).
Lock portions 29, 30 are formed extending upward, and inclined portions 31, 32 are formed extending upwardly to the right from the left end portions of the lock portions 29, 30. On the other hand, the inclined portion 3 is located on the right side of the third opening 28.
1 and 32 is formed, and the operating member 10 is formed from the left side of this inclined portion 33.
An unlocking portion 34 is formed extending in the direction of movement (direction opposite to arrow A shown in FIG. 3), and a spring mounting portion 35 is formed on the left side of the third opening 28. Then, as shown in FIG.
0 is located at the return position, the engaging pins 22~
24 have first to third openings 26 to 24, respectively.
The locking body 25 is located above each of the inclined parts 31 to 33 in the main body case 1, and the locking body 25 is moved to the left by a compression spring 36 mounted between the spring mounting part 35 and the spring holding part 1a formed in the main body case 1. (arrow B
direction) and held in the locked position.
Reference numeral 37 denotes a stopper plate provided on the main body case 1 so as to be movable back and forth in the left-right direction along the front surface of the locking body 25, and on the left side of this plate is formed an inclined part 38 upward to the right that corresponds to the engagement pin 22. An opening 40 having a downward slope 39 to the right corresponding to the engaging pin 23 is bored in the right side. The tips of the engaging pins 22 and 23 are located above the inclined parts 38 and 39 of the stopper plate 37, respectively. As shown in FIG. 3, recesses 41 and 42 are formed in the lower portions of the locking body 25 and the stopper plate 37, respectively, in which a protrusion 43 formed on the main body case 1 is positioned. As a result, the amount of movement of the locking body 25 and the stopper plate 37 in the left-right direction is regulated. In addition, in FIG. 4, 44 is a connector case provided on the rear surface of the main body case 1, and 45 is a plurality of terminals (only one is shown) attached to the rear surface of the insulating board 21.
These are electrically connected to each fixed contact on the insulating substrate 21.

Next, the operation of the above configuration will be explained. First, when lighting a small lamp (not shown), press the small lamp operation member 9 against the elastic force of the compression spring 12 from the return position shown in FIG. move it. Then, the locking pin 23 contacts and presses the inclined portion 32 of the second opening 27 provided in the locking body 25, so that the locking body 25 resists the elastic force of the compression spring 36. and is moved to the right (in the opposite direction of arrow B). In this way, the hooking pin 2
3 is lowered to the left end of the inclined part 32, the engaging pin 23 comes off the left end of the inclined part 32 and faces the left end of the locking part 30, but the engaging pin 2
3 faces the left end of the lock part 30, the lock body 25 is moved to the left (in the direction of arrow B) by the elastic force of the compression spring 37, and the lock part 30 is thereby moved to the left and the lock part 30 is engaged. Engage pin 23,
Therefore, even if the pressure on the operating member 9 is released, the operating member 9 is held (locked) in the operating position against the elastic force of the compression spring 12. When the locking pin 23 is locked, the locking pin 23 receives a force in the direction of arrow A due to the elastic force of the compression spring 12, but the locking portion 3
0 is oriented in the direction of arrow B and forms an acute angle with the opposite direction of arrow A. Therefore, the component of the elastic force of the compression spring 12 acting on the engagement pin 23 causes the engagement pin 23 to move along the lock portion 30. As a result, the engaging pin 23 automatically moves to the left (in the direction of arrow B) and locks the lock portion 30.
You can definitely prevent it from happening if it comes off.

After that, if you want to turn off the small lamp,
The release operation member 10 is pressed and moved in the opposite direction of arrow A against the elastic force of the compression spring 13. Then, the engaging pin 24 is connected to the third
slides from the inclined part 33 of the opening 28 to the unlocking part 34, whereby the locking body 25
It is moved to the right against the elastic force of 6 and placed in the unlocked position. In this process, the lock part 30 is moved to the right while slidingly contacting the engaging pin 23. However, since the lock part 30 is parallel to the moving direction of the locking body 25, the engaging pin 23 is moved to the right while slidingly contacting the engaging pin 23. It remains stationary without moving up and down. When the locking body 25 is in the unlocked position, the engaging pin 23 is disengaged from the left end of the locking portion 30, and the small lamp operating member 9 is thereby moved in the direction of arrow A by the elastic force of the compression spring 12. and return to the return position. After this, unlocking operation member 1
When you release your finger from 0, the operating member 10 is returned to the return position by the elastic force of the compression spring 13, and the lock body 25 is moved to the left by the elastic force of the compression spring 36 to the locked position. will be reinstated.

On the other hand, when turning on a headlamp (not shown), the headlamp operating member 8 is pressed and moved from the return position shown in FIG. Then, the engaging pin 22 is engaged with the lock portion 29 by the same action as described above, and the operating member 8 is held (locked) at the operating position against the elastic force of the compression spring 11. At this time, if the stopper plate 37 is located at the position shown by the solid line in FIG. The stopper plate 37 is moved to the right (in the opposite direction of arrow B) by coming into contact with and pressing the left side inclined part 38 of the plate 37, so that the stopper plate 37 is moved to the two points shown in FIG. It is moved to the position shown by the chain line. In this state, the right inclined portion 39 of the stopper plate 37 is attached to the locking body 25.
Because it slightly overlaps the left end of the inclined part 32, even if the small lamp operation member 9 is pressed substantially simultaneously in the opposite direction of arrow A, the engaging pin 23 is prevented from moving from the inclined part 32 to the lock part 30. Therefore, even if the headlamp operating member 8 and the small lamp operating member 9 are pressed at the same time, only one of them is locked in the operating position, and both operating members 8 and 9 are prevented from being in the operating position at the same time. . Note that when the headlamp operating member 8 is locked, if the release operating member 10 is pressed, the headlamp operating member 8 is returned to the return position by the same action as described above, and the small lamp operating member When the button 9 is pressed, the headlamp operating member 8 is brought to the return position, and at the same time, the small lamp operating member 9 is locked in the operating position.

According to this embodiment, the operating members 8 and 9 are provided so as to be reciprocally movable diagonally up and down (in the direction of arrow A and in the direction opposite to arrow A shown in FIG. 3), while the locking body 25 is provided in the left and right direction ( Since the locking body 25 is provided with lock portions 29 and 30 parallel to the moving direction of the locking body 25, the operating member 8
The moving direction of the engaging pins 22 and 23 fixed to the pins 22 and 9, respectively, from the return position to the operating position (direction opposite to arrow A) and the orientation direction of the locking parts 29 and 30 (arrow B
It is possible to reliably prevent the engagement pins 22 and 23 from coming off by themselves from the locking parts 29 and 30 when the locking is done due to the acute angle formed with the locking part 29 and the locking part 29 and the locking body 25. Therefore, even if the lock parts 29 and 30 slide on the engagement pins 22 and 23 when the lock body 25 moves to the unlocked position when the lock is released, the engagement pins 22 and 23 exhibits a stationary state without vertical movement, and as a result, it is possible to prevent the operability and contact switching performance from being impaired when the operating members 8 and 9 are unlocked, and to maintain the same operability and contact switching performance as before. Obtainable.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with various modifications.

As is clear from the above description, the present invention has the advantage of being able to reliably prevent the operating member and the locking portion from becoming disengaged without permission, and also not impairing the operability and contact switching performance when the lock is released. Therefore, it is possible to provide a push button switch device that exhibits the following effects.

[Brief explanation of the drawing]

1 and 2 show a conventional push button switch device, FIG. 1 is a schematic diagram showing a locking function part, and FIGS. 2a and 2b are first diagrams for explaining the conventional operation. 3 to 7 show one embodiment of the present invention, in which FIG. 3 is a longitudinal sectional front view, FIG. 4 is a longitudinal sectional side view taken along the line - in FIG. The figure is a rear view with the insulating substrate removed, FIG. 6 is a top view, and FIG. 7 is a parts diagram of the locking body. In the figure, 1 is the main body case, 8 to 10 are operating members for the head lamp, small lamp, and release, respectively, 11 to 13 are compression springs, and 22 to 24
is a locking pin, 25 is a locking body, 29 and 30 are locking parts, 31 to 33 are inclined parts, 34 is an unlocking part, 36
is a compression spring, and 37 is a stopper plate.

Claims (1)

[Scope of utility model registration request] an operating member provided in the main body case so as to be reciprocally movable between a return position and an operating position in response to manual operation and always biased to the return position; The operating member is provided parallel to the moving direction of the locking body at a portion corresponding to the operating member of the locking body that is biased toward a locking position that makes an acute angle with the moving direction of the member to the operating position. a lock portion that engages the operating member to lock it in the operating position when the lock body is moved to the operating position, and is disengaged from the operating member when the lock body is moved in a direction opposite to the locking position; and a switch that is opened and closed in accordance with the reciprocating movement of the operating member.