JPH0715064Y2 - Switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement in the structure of a switch device, and in particular, its switch lever and switch case.

[Prior Art] A switch device is widely used to control various devices such as an audio device and an air conditioner, and it is well known that the switch device performs circuit switching by sliding a switch lever. is there.

FIG. 3 shows the internal structure of a conventional switch device using such a switch lever. In the figure,
The switch device 10 has an operation portion 12 in which a push button is fitted at the tip.
And a movable contact plate 20a, 20b having one end fixed to the substrate 16 and the other end formed with movable contacts 18a, 18b.
And fixed contacts 22a and 22b which are formed on the substrate 16 and are arranged at positions where they can come in contact with and separate from the movable contact 18.

As is apparent from FIG. 3B, the surface of the switch lever 14 facing the substrate 16 is formed in a hollow shape, and the hollow portion 24
The movable contact plate 20 is disposed in the. Further, a convex portion 26 is formed in the hollow portion 24 so as to face the movable contact plate 20, and can come into contact with contact portions 28a and 28b formed in the movable contact plate 20.

The switch device according to the illustrated example is configured as described above, and its operation will be described below.

First, when the switch lever 14 is in the returned state, the convex portion 26 formed on the switch lever 14 has the contact portion 28 of the movable contact plate 20.
Therefore, the movable contact plate 20 is in a raised state. Therefore, the movable contact 18 is not in contact with the fixed contact 22.

On the other hand, when the switch lever 14 is pushed in, the convex portion 26 also moves rearward, and the convex portion 26 comes into contact with the contact portion 28 of the movable contact plate 20 and pushes down the corresponding contact portion. . Therefore, the movable contact 18 descends and comes into contact with and conducts with the fixed contact 22.

As described above, according to the switch device of the illustrated example,
It is possible to perform desired circuit switching by pushing in and returning the switch lever 14.

By the way, such a switch device is assembled as shown in FIG.

That is, the switch lever 14 is arranged in the switch case 30 by projecting the operation portion 12 of the switch lever 14 into the front opening 30a of the box-type switch case 30 from the inside.

At this time, the spring 32 for urging the restoring force of the switch lever 14
Must be inserted between the rear part of the switch lever 14 and the inner wall of the switch case 30. In the case of the multiple switch device as shown in FIG. 3, the switch case 30
After arranging the plurality of switch levers 14 and the plurality of springs 32 in parallel with each other, the board 16 is attached and fixed.

[Problems to be Solved by the Invention] Problems of Prior Art However, in the conventional switch device, it is extremely difficult to assemble the switch lever 14 and the return spring 32 to the switch case 30. Had.

That is, in FIG. 4, when the switch lever 14 is assembled in the switch case 30, the switch lever 14 is biased to the left in the figure by the elastic force of the return spring 32. When a slight shock is given,
By the biasing force of the spring 32, the spring 32 and the switch lever 14
Bounce in the directions of arrows I and II, respectively.

Therefore, meticulous attention is required for assembling the switch device, and automation of the assembly is difficult.

In addition, the rattling of the operating portion of the switch device should be eliminated, but in the switch device as shown in FIG. 4, the molding accuracy of each of the switch lever 14, the board 16, and the switch case 30 varies. It was extremely difficult to affect the rattling, improve the molding accuracy of all the parts, and eliminate the rattling.

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a switch device that is easy to assemble and that eliminates rattling of an operating portion.

[Means for Solving the Problems] In order to achieve the above object, the switch device according to the present invention is slidable in a protruding / returning direction with respect to the switch case in such a sliding direction. Switch lever that is assembled vertically from the switch lever, an elastic member that is disposed between the switch lever rear end and the switch case, and elastically biases the switch lever in the protruding direction, and both side surfaces of the switch lever. The rib formed on the switch case and the inner wall surface of the switch case facing both side surfaces of the switch lever are provided at positions substantially facing the rib when the switch lever is mounted / projected in the switch case. Rib receivers that support the switch lever from the both sides in the assembling direction. It is characterized by preventing the protrusion.

[Operation] Since the switch device according to the present invention has the above-mentioned means, when the switch device is assembled, the switch lever is inserted into the switch case from above the return position, and the rib provided on the side part of the switch lever is the rib. Position it between the receivers.

After moving the switch lever forward, an elastic member such as a spring is inserted between the switch lever rear end and the switch case.

As described above, when the switch lever is in the state of moving forward with respect to the switch case, the rib of the switch lever is supported by the rib receiver, and there is no possibility of jumping out of the switch case even if some impact is applied.

Therefore, even if the elastic member is assembled, the switch lever and the elastic member are stably supported in the switch case.

On the other hand, the switch lever is firmly supported in the switch case by the ribs and the rib receivers provided on the switch case, and does not depend on the cover member (the substrate or the like) of the switch case for the switch lever positioning unlike the conventional case. . Therefore, the rattling of the switch lever can be eliminated by improving only the molding accuracy of the switch lever and the switch case, and a more stable switch device can be easily manufactured.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a switch device according to an embodiment of the present invention, in which parts corresponding to those in the prior art are designated by the reference numeral 100 and their description is omitted.

A feature of the present invention is that a rib is formed on the switch lever and a rib receiver is formed on the inner wall of the switch case. For this reason, in this embodiment, three ribs 150, 152, 154 are provided on both side surfaces 114a, 114b of the switch lever 114, respectively.

Further, three rib receivers 156, 158, 160 are formed on the inner side walls 130a, 130b of the switch case 130, respectively.

Here, the ribs 150, 152, 154 are formed so as to project in parallel with the sliding direction of the switch lever 114 and in a straight line.

On the other hand, the rib receivers 156, 158, 160 are the switch case 130.
The rib receivers 156 and 160 support the ribs 150 and 154 from below when the switch lever 114 is mounted. Further, the rib receiver 158 is a rib when the switch lever 114 is mounted / advanced.
It is formed so as to be located above the 152.

The switch device according to the present embodiment is configured as described above,
Next, the mounting and operation will be described with reference to FIG.

First, as shown in FIG. 2 (A), the switch case 13
When the switch lever 114 is attached to 0, the switch lever 114 is lowered into the switch case 130 from the rear part of the switch case 130.

Then, the ribs 150 and 154 abut the rib receivers 156 and 160, but the rib 152 is located behind the rib receiver 158 and the rib receiver 15
8 does not hinder the mounting of the switch lever 114.

At this time, it is also preferable to mount the return spring 132 between the switch case 130 and the rear end of the switch lever 114 at the same time with the return spring 132 compressed.

Then, after the switch lever 114 is arranged to be lowered in the switch case 130, the switch lever 114 is moved forward by the urging force of the return spring 132, and the rib 152 receives the rib receiving force as shown in FIG. 2B. To the bottom of 158.

As a result, the ribs 150 and 154 of the switch lever 114 are
The ribs 152 are supported on the upper ends of the ribs 156, 160, the ribs 158 are supported on the lower surface of the rib receiver 158, and the switch lever 114 is firmly supported by the ribs 150, 152, 154 and the rib receivers 156, 158, 160 at three points from above and below.

Therefore, the switch lever 114 does not pop out of the switch case 130 by the biasing force of the spring 132.

Moreover, since the switch lever 114 is firmly held only by the switch case 130, rattling of the switch lever 114 can be reliably eliminated by improving the molding precision of both.

In addition, in this embodiment, the switch lever 114 includes the rib 15
It is also possible to prevent an excessive frictional force from being applied to the slide of the switch lever 114, which is supported only by 0, 152 and 154, and the bottom surface or side surface of the lever does not contact the inner wall of the switch case.

[Effect of the Invention] As described above, according to the switch device of the present invention, the rib is provided on the side surface of the switch lever and the rib receiver is provided on the inner wall of the switch case, and the rib is supported by the rib receiver. Assembling the switch device is facilitated, and automatic assembly is also possible. Therefore, there is a remarkable effect that the cost can be reduced by mass production.

[Brief description of drawings]

1 is an exploded perspective view of a switch device according to an embodiment of the present invention, FIG. 2 is an explanatory view of the operation of the switch device shown in FIG. 1, and FIG. 3 is an explanatory view of a conventional switch device. FIG. 4 is an explanatory view showing an assembled state and problems of the switch device shown in FIG. 10,110… Switch device 14,114… Switch lever 30,130… Switch case 32,132… Return spring (elastic member) 150,152,154… Rib 156,158,160… Rib receiver

Claims (1)

[Scope of utility model registration request] 1. A switch lever which is assembled and arranged in a direction perpendicular to the sliding direction so as to be slidable in a protruding / returning direction with respect to the switch case, and a rear end portion of the switch lever. An elastic member that is disposed between the switch case and the switch case, and elastically biases the switch lever in the protruding direction; ribs that project from both side surfaces of the switch lever; and an inner wall surface of the switch case that faces both side surfaces of the switch lever. , A rib receiver that is provided at a position that substantially faces the rib when the switch lever is mounted / projected in the switch case, and that supports the rib from both sides in the switch lever assembling direction. A switch device for preventing the switch lever and the elastic member from popping out in a direction.