JP2606927Y2 - Switch device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device having an operation knob movably provided.

[0002]

2. Description of the Related Art An example of this type of switch device is shown in FIG. In FIG. 5, inside the switch case 1,
An operation knob 2 is provided so as to be movable in the left-right direction. Further, fixed contacts 4 and 5 are provided on the lower surface in the switch case 1 via an insulator 3, and a movable contact 6 which contacts and separates from the fixed contacts 4 and 5 slides on the upper surface of the insulator 3 in the left-right direction. It is provided as possible. The movable contact 6 is held by a movable contact holder 7,
The left end of the operation knob 2 is in contact with the right end of the movable contact holder 7, and a return coil spring 8 is provided between the left end of the movable contact holder 7 and the bottom wall of the switch case 1. Have been.

In this configuration, when the operating knob 2 is pushed in the state shown in FIG. 5, the operating knob 2 pushes the movable contact holder 7 to the left to move the movable contact 6 to the fixed contacts 4 and 5. The two members come into contact with each other and close between them. When the pushing operation of the operation knob 2 is stopped, the movable contact holder 7 is urged rightward by the spring force of the coil spring 8 to move, so that the movable contact 6 is separated from the fixed contact 4 and the fixed contact 4 is moved. And 5 are opened.

[0004]

In the above-mentioned conventional structure, the moving amount of the operating knob 2 when the operating knob 2 is pushed is equal to the moving amount of the movable contact holder 7, that is, the movable contact 6. . In addition, the moving amount of the movable contact 6 needs to be set to be somewhat long. This is because when the movable contact 6 slides on the fixed contacts 4 and 5, dust or the like adhering to the two contacts is swept out and removed, thereby increasing the reliability of the contact between the two. . For this reason, in the above-mentioned conventional configuration, there is a problem that the operation feeling of the operation knob 2 is not so good because the moving amount of the operation knob 2 must be set to a certain length.

Therefore, an object of the present invention is to provide a switch device capable of setting the moving amount of the movable contact to be sufficiently long, and also capable of minimizing the moving amount of the operation knob and improving the operational feeling sufficiently. To offer.

[0006]

The switch device according to the present invention includes an operation knob provided so as to be movable, and has a mountain-shaped or valley-folded shape as a whole, the base end of which is fixed. When the operation knob is moved to deform the side portion on the base end side by the operation knob being in contact with the side portion on the base end side, the free end is larger than the moving amount of the operation knob. Move a lot and move the tip of the free end
A movement amplification member configured such that a movement direction is the same as a movement direction of the operation knob , provided at a distal end portion of a free end of the movement amount amplification member, and provided on an upper surface of the insulator.
A movable contact for sliding movement while making contact at all times, said Lee
It is provided on the upper surface of the insulator so that it is almost flush,
The present invention is characterized in that a fixed contact which comes into contact with and separates from the movable contact is provided.

[0007]

According to the above means, when the operation knob is moved and operated, the operation knob comes into contact with the side portion on the base end side of the moving amount amplifying member and presses it to deform it. At this time, since the free end of the movement amplification member moves more than the movement of the operation knob, the movable contact provided on the free end also moves more than the movement of the operation knob. Become like Therefore, even if the movement amount of the operation knob is configured as small as possible, the movement amount of the movable contact can be set to be sufficiently long. As a result, the operational feeling of the operation knob can be sufficiently improved while increasing the reliability of the contact of the contact.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 1 showing the overall configuration of the switch device, a housing 12 for housing a contact mechanism is formed inside a switch case 11. An operation knob 13 is provided in the housing 12 so as to be movable in the left-right direction. Operation knob 13
Is composed of a pressing operation portion 13a having a shape that substantially closes the right end opening of the housing portion 12, and a projection 13b protruding leftward on the back surface (left side surface) of the pressing operation portion 13a. Have been. A flat insulator 14 is provided on the lower surface of the inside of the housing 12 of the switch case 11.

At the left end of the upper surface of the insulator 14, for example, two fixed contacts 15 (only one is shown) are arranged in parallel. A base end portion 16a of a movable contact member 16, which is formed as a whole, is fixed to a right end portion of the upper surface of the insulator 14 via a rivet 17 (see also FIG. 2). The movable contact member 16
Is composed of a leaf spring made of a conductor and has a base end 16a.
The end of the protrusion 13b of the operation knob 13 is configured to contact the side 16b on the side. The two fixed contacts 15 are attached to the free end 16c of the movable contact member 16.
A movable contact 18 that contacts and separates from the movable contact 18 is formed.

In this case, in the state shown in FIG. 1, the movable contact 18 is separated from the fixed contact 15, and the pressing operation portion 13a of the operation knob 13 slightly protrudes outward from the opening edge of the housing portion 12. . In this state, when the operation knob 13 is pushed in, the protrusion 13b of the operation knob 13 abuts against the side 16b on the base end 16a side of the movable contact member 16, and presses this to the left to move and deform. Let it. Then, as shown in FIG. 2, the free end 16c of the movable contact member 16 is
The movable contact 18 is moved and deformed to the position indicated by the two-dot chain line.
Contacts the two fixed contacts 15. At this time, the movement amount A (see FIG. 2) of the free end 16c of the movable contact member 16 is
It is configured to be considerably longer than the movement amount B of the operation knob 13 (see FIG. 2). When the pressing operation of the operation knob 13 is stopped, the movable contact member 16 is configured to return to the form shown in FIG. 1 by its own elastic restoring force. Here, the operation knob 13 is configured to be prevented from slipping out of the opening edge of the housing portion 12 to the outside by a retaining means (not shown). In the case of the above embodiment, the movable contact member 16 constitutes a moving amount amplifying member.

A terminal accommodating portion 19 is formed on the left end side of the switch case 11, and, for example, two terminals 20 (only one of which is shown) are disposed in the terminal accommodating portion 19. These terminals 20
Are connected to the two fixed contacts 15.

Next, the operation of the above configuration will be described. In the state shown in FIG. 1, when the user pushes the operation knob 13 with his / her finger, the protrusion 13 b of the operation knob 13 contacts the side 16 b on the base end 16 a side of the movable contact member 16 and moves the same to the left. To move and deform. Then, the free end portion 16c of the movable contact member 16 moves and deforms to a position indicated by a two-dot chain line in FIG. 2, and the movable contact 18 comes into contact with the two fixed contacts 15 so as to extend between them. This gives 2
The circuit between the fixed contacts 15 is closed. Thereafter, when the user stops pressing the operation knob 13, the movable contact member 16
Is deformed by its own elastic restoring force to return to the original form shown by the solid line in FIG. Thereby, the movable contact 18 is separated from the two fixed contacts 15 to open the circuit between the two fixed contacts 15, and the operation knob 13 returns to the initial position shown in FIG.

According to this embodiment having such a configuration, when the operation knob 13 is moved, the moving amount B is amplified by the movable contact member 16 to operate the free end 16c of the movable contact member 16. Since the movement amount is larger than the movement amount B of the knob 13, specifically, by the movement amount A (A> B), the movable contact 18 provided on the free end portion 16 c also moves the operation knob 13. It moves more than the amount B. Therefore, even if the movement amount B of the operation knob 13 is configured as small as possible, the movement amount of the movable contact 18 can be set to be sufficiently long. As a result, the movable contact 1 is
When the sliding contact between the movable contact 18 and the fixed contact 1 is performed, dust or the like adhering to the two contacts can be swept out and removed.
The reliability of the contact with the control knob 5 can be sufficiently increased, and the operation feeling of the operation knob 13 can be sufficiently improved.

In the above embodiment, the movable contact member 16
Is constituted by a leaf spring, which is also used as a return spring, and the movable contact 1 is attached to the free end 16c of the movable contact member 16.
8 is provided integrally, the number of parts can be significantly reduced, and the manufacturing cost can be reduced.

FIGS. 3 and 4 show a second embodiment of the present invention. Differences from the first embodiment will be described. The same parts as those in the first embodiment are denoted by the same reference numerals. In FIG. 3, fixed contacts 22 and 23 are provided at the left end and the center of the upper surface of the insulator 21. Further, a base end portion 24a of a connecting rod 24, which is a movement amount amplifying member, is rotatably fixed to a right end portion of an upper surface of the insulator 21 by being pivotally supported. The connecting rod 24 is composed of 2
The two rods 25 and 26 are rotatably connected to each other, and can be bent (rotatable) at an intermediate portion 24b which is the connection portion.
Is configured.

A movable contact 27 which comes into contact with and separates from the fixed contacts 22 and 23 is provided on the upper surface of the insulator 21 so as to be slidable in the left-right direction. This movable contact 27
Are held by the movable contact holder 28. A coil spring 29 for applying contact pressure is provided between the movable contact holder 28 and the movable contact 27. The free end 24c of the connecting rod 24 is pivotally connected to the center of the upper surface of the movable contact holder 28 by being pivotally supported. Further, the projection 13b of the operation knob 13 is in contact with a rod 25 which is a side portion on the base end portion 24a side of the connecting rod 24. Further, a return coil spring 30 is provided between the left end of the movable contact holder 28 and the bottom wall 12a of the housing 12 of the switch case 11.

In the case of the second embodiment, when the user pushes the operation knob 13 with his / her finger in the state shown in FIG. 3, the projection 13b of the operation knob 13 is moved to the base end 24a of the connecting rod 24. This is pressed and moved to the left while abutting on the rod 25 on the side. Then, the free end portion 24c of the connecting rod 24 moves to a position shown by a two-dot chain line in FIG. 4, and the movable contact holder 28 and the movable contact 27 move to the left in conjunction with this movement, so that the movable contact 27 are two fixed contacts 22 and 2
Make contact between the three. As a result, the circuit between the two fixed contacts 22 and 23 is closed.

Thereafter, when the user stops pressing the operation knob 13, the movable contact holder 28 and the movable contact 27
It is moved to the right by the spring force of the return coil spring 30, and in conjunction with this movement, the connecting rod 24 is returned and deformed to the original form shown by the solid line in FIG. This allows
The movable contact 27 is separated from the fixed contact 22 to open the circuit between the two fixed contacts 22 and 23, and the operation knob 13 is moved to the position shown in FIG.
Return to the initial position shown in. Therefore, in the second embodiment, substantially the same operation and effect as in the first embodiment can be obtained.

In each of the above-described embodiments, the configuration using the mountain-shaped movable contact member 16 or the connecting rod 24 is used. Instead, the configuration using the valley-shaped movable contact member or the connecting rod, for example, The configuration shown in FIG. 1 or FIG. 3 may be inverted.

[0020]

As is apparent from the above description, the present invention is configured to amplify the moving amount of the operating knob by the moving amount amplifying member and increase the moving amount of the movable contact. Even if the configuration is as small as possible, the moving amount of the movable contact can be set sufficiently long, and an excellent effect that the operation feeling of the operation knob can be sufficiently improved while increasing the reliability of the contact of the contact can be obtained. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an entire switch device showing a first embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view for explaining the operation of a movable contact member.

FIG. 3 is a longitudinal sectional view of the entire switch device showing a second embodiment of the present invention.

FIG. 4 is a partial longitudinal sectional view for explaining the operation of the connecting rod.

FIG. 5 is a diagram corresponding to FIG. 1 showing a conventional configuration.

[Explanation of symbols]

11 is a switch case, 13 is an operation knob, 14 is an insulator, 15 is a fixed contact, 16 is a movable contact member (moving amount amplifying member), 16a is a base end portion, 16b is a side portion, 16c
Is a free end, 18 is a movable contact, 21 is an insulator,
22 and 23 are fixed contacts, 24 is a connecting rod (moving amount amplifying member), 25 is a rod (side), 26 is a rod, and 27 is a movable contact.

Continuation of the front page (56) References Japanese Utility Model Showa 63-308825 (JP, U) Japanese Utility Model Showa 62-86034 (JP, U) Japanese Utility Model Showa 61-10086 (JP, U) Japanese Utility Model Showa 62-106187 (JP, U) (U, JP) 52-67975 (JP, U) JP 4-41538 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 13/14 H01H 13/52

Claims (1)

(57) [Scope of request for utility model registration] 1. An operation knob provided so as to be able to be moved and operated, and has a mountain-fold shape or a valley-fold shape as a whole, a base end of which is fixed, and the operation knob provided on a side near the base end. When the operation knob moves and moves the side of the base end side by contact, the free end moves more than the movement amount of the operation knob , and the tip of the free end moves.
The moving direction of the unit and the moving direction of the operation knob are the same.
A moving amount amplification member configured urchin, provided at the distal end portion of the free end of the moving amount amplification member, Lee
A movable contact that slides and moves while constantly contacting the upper surface of the insulator; and a movable contact that is substantially flush with the upper surface of the insulator.
And a fixed contact which comes into contact with and separates from the movable contact.