JP2592856Y2 - Mounting structure for movable contacts - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable contact mounting structure in which a movable contact is mounted on a contact holder by engagement.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional structure of such a movable contact mounting structure. This is provided with engaging projections 2, 2 at two places on the side surface of the contact holder 1,
Engagement holes 4, 4 are provided in the mounting pieces 3a, 3a on the left and right sides of the movable contact 3 made of, for example, a copper plate, and the engagement holes 4, 4 are engaged with the engagement protrusions 2, 2. By doing
The movable contact 3 is attached to the contact holder 1.

[0003]

However, in the above-mentioned structure, the movable contact 3 is connected to the contact holder 1.
When the engaging hole 4 of the movable contact 3 is engaged with the engaging projection 2 of the contact holder 1, the mounting pieces 3a, 3a of the movable contact 3 need to be expanded as shown in FIG. For this reason, the mounting piece 3a may be mounted while being deformed in an expanded state. When the movable contact 3 is attached in such a state and assembled as a switch device, the movable contact 3 may interfere with other parts or may come off the contact holder 1.

Accordingly, an object of the present invention is to provide a movable contact mounting structure that can prevent deformation of the movable contact when the movable contact is mounted, and that can securely mount the movable contact to the contact holder.

[0005]

According to the present invention, in order to achieve the above-mentioned object, a side portion can be flexibly deformed through a slit.
A contact holder having a flexible piece provided so that, together with the contact portion, and a movable contact having a mounting piece on the side, engaging portions on one of said flexible piece and mounting piece And the other side is provided with an engaging hole for engaging the engaging convex portion, and the movable contact is attached to the contact holder by engaging the engaging convex portion with the engaging hole. It is assumed that.

[0006]

When the movable contact is mounted on the contact holder, the engaging piece and the engaging hole may be engaged while the flexible piece of the contact holder is bent, so that the mounting piece of the movable contact is expanded. No need.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 1 and FIG. 2, the contact holder 11 is integrally formed of, for example, a synthetic resin.
Flexible pieces 13, 13 are provided so as to be able to bend and deform via the two, and two spring accommodating portions 14, 14 are formed between these flexible pieces 13, 13. A hook portion 15 having a hook hole 15a is provided in the middle upper portion. An engagement projection 16 having a slope is integrally provided on the side surface of each of the flexible pieces 13.

On the other hand, the movable contact 17 is made of, for example, a copper plate, and has a pair of contact portions 18a, 18a.
The main plate 18 has a U-shape including a main plate portion 18 and mounting pieces 19, 19 provided on both sides of the main plate portion 18. Each mounting piece 19 is formed with a rectangular engaging hole 20 that engages with the engaging projection 16.

The width L1 between the inner surfaces of the mounting pieces 19, 19 in the movable contact 17 is the width L between the side surfaces of the flexible pieces 13, 13 in the contact holder 11.
It is set to be almost the same as 2.

Thus, the movable contact 17 flexes the flexible piece 13 on the contact holder 11 side in a state where the compression coil springs 21 are accommodated in the two spring accommodating portions 14 of the contact holder 11 (FIG. 1). (See a two-dot chain line), and the engagement piece 20 is engaged with the engagement projection 16 of the flexible piece 13 to be attached to the contact holder 11.

FIG. 3 shows the contact holder 11 described above.
The configuration of the switch device using the movable contact 17 is shown.

In FIG. 3, the contact holder 11 to which the movable contact 17 is attached is mounted on the switch body 2.
2 is provided movably in the vertical direction in FIG. On the switch body 22 side, there is provided a fixed contact 23 to and from which the contact portion 18a of the movable contact 17 comes and goes as the contact holder 11 moves. At this time, the movable contact 17 is urged by the spring force of the compression coil spring 21 in the direction in which the contact portion 18 a is pressed against the fixed contact 23.

A connecting member 25 is provided on the back side of the operation knob 24, and the lower end of the connecting member 25 is hooked on the hook 15 of the contact holder 11.
The operation knob 24 and the contact holder 11 are connected via the. A return spring 26 composed of a compression coil spring is disposed between the switch body 22 and the connecting member 25, and the operation knob 24 is urged upward by the return spring 26.

[0014] Thus, the switch device is provided with an operation knob 2
The switch is switched by the contact holder 11 moving up and down in response to the pressing operation of 4, and the contact portion 18a of the movable contact 17 comes into contact with and separates from the fixed contact 23 accordingly.

According to the above-described embodiment, since the flexible piece 13 is provided on the contact holder 11 side and the engaging protrusion 16 is provided on the flexible piece 13, the movable contact having the engaging hole 20 is provided. When attaching the contact 17 to the contact holder 11, the engagement piece 20 of the movable contact 17 can be expanded because the engagement hole 20 can be engaged with the engagement projection 16 while bending the flexible piece 13 of the contact holder 11. No need to open. For this reason, it is possible to prevent the mounting piece 19 of the movable contact 17 from being deformed to an expanded state,
Therefore, the movable contact 17 can be securely attached to the contact holder 11. The flexible piece 13 is
Provided so as to be able to bend and deform via the socket 12.
Therefore, when the flexible piece 13 is bent toward the slit 12
In addition, as shown by a two-dot chain line in FIG.
By hitting the opposing part via the lit 12,
The upper deformation is regulated, and the flexible piece 13 is excessively
Bending can be prevented.

In the above-described embodiment, the engagement piece 16 is provided on the flexible piece 13 of the contact holder 11,
Although the engagement hole 20 is formed in the mounting piece 19 of the movable contact 17, the contact holder 11 is
It is also possible to form an engaging hole in the flexible piece 13 and to provide an engaging projection engaging with the engaging hole in the mounting piece 19 of the movable contact 17 by, for example, stamping.

[0017]

As is apparent from the above description, according to the present invention, when the movable contact is attached to the contact holder, the engaging projection and the engaging hole are formed while bending the flexible piece of the contact holder. Can be prevented from deforming the movable contact when the movable contact is attached to the contact holder, and an excellent effect that the movable contact can be securely attached to the contact holder can be obtained. In addition, the flexible piece bends and deforms through the slit.
It is provided so that it can be shaped.
When the flexible piece is bent toward the slot,
By hitting the opposing part, further deformation is regulated
To prevent the flexible piece from flexing excessively.
There is also an advantage that it can be stopped.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, in which a contact holder and a movable contact are separately illustrated.

FIG. 2 is an exploded perspective view.

FIG. 3 is a longitudinal sectional view of the switch device.

FIG. 4 is a diagram corresponding to FIG. 2 showing a conventional configuration.

FIG. 5 is a sectional view showing a state in which a movable contact is attached to a contact holder.

[Explanation of symbols]

11 is a contact holder, 12 is a slit, 13 is a flexible piece, 16 is an engagement projection, 17 is a movable contact, 19 is a mounting piece, and 20 is an engagement hole.

Claims (1)

(57) [Scope of request for utility model registration] 1. A side part can be flexibly deformed through a slit.
Contact holder having a flexible piece provided as follows ,
A movable contact having a contact portion and a mounting piece on a side portion, wherein one of the flexible piece and the mounting piece is provided with an engaging convex portion, and the other is engaged with the engaging convex portion. A mounting structure for a movable contact, wherein an engagement hole is provided, and the movable contact is attached to the contact holder by engaging the engagement projection with the engagement hole.