JPH05225855A - Small switch - Google Patents

Abstract

PURPOSE:To hinder a mobile contact spring from rocking right and left and stabilize the 1 operation and prevent contact inferiority by forming a pair of ribs, which receive the bottoms side on both sides of the calking part of the mobile contact part, integrally in a resin body. CONSTITUTION:A pair of ribs, which receive the bottoms side on both sides of the calking part of a mobile contact part, are formed integrally in a resin body 11. Furthermore, a pair of receiving ribs 11 for pressing both sides of the calking part of the mobile contact spring 5 are made, in opposition to the receiving ribs 11, in the resin cover installed on the resin body 1. Hereby, the mobile contact spring 5 is hindered from rocking right and left, and the operation becomes stable, and the inferiority in contact is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small switch,
Specifically, it relates to a technique for stabilizing the operation of the movable contact spring.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
In the case of a small switch in which the movable contact spring 5 provided with is crimped to the end of the terminal 2 formed by insert molding in the resin body 1, the bifurcated crimping piece 2 at the end of the terminal 2 is used.
The movable contact spring 5 is electrically connected to the end portion of the terminal 2 by pushing apart b and 2b and caulking and connecting.

[0003]

However, in such a structure, the bifurcated caulking pieces 2b, 2b spaced apart in the longitudinal direction of the movable contact spring 5 are arranged in the longitudinal direction of the movable contact spring 5. Since the movable contact spring 5 is deformed and caulked and connected, the movable contact spring 5 sways to the left and right, and is stable with respect to the movable contact portion 6 of the movable contact spring 5 and the fixed contact portion 4 provided on the resin body 1 side. It is difficult to make contact with each other,
In addition, there is a problem that the caulking connection of the movable contact spring 5 may be disconnected due to a large number of operations of the movable contact spring 5.

The present invention has been made in view of the above problems, and an object of the present invention is to stabilize the operation of the movable contact spring with a simple improvement without causing contact failure. An object of the present invention is to provide a small switch capable of preventing the caulking connection part from coming off.

[0005]

According to the present invention, the movable contact portion 6 is provided.
A small switch in which a movable contact spring 5 provided with is crimped to an end portion of a terminal 2 insert-molded in a resin body 1, and the resin body 1 receives lower surface sides of both sides in a crimped portion of the movable contact spring 5. It is characterized in that the pair of receiving ribs 11, 11 are integrally formed.

Further, a pair of pressing ribs 12, 12 for pressing both sides of the caulked portion of the movable contact spring 5 are integrally formed on the resin cover 9 mounted on the resin body 1 so as to face the receiving ribs 11, 11. It is characterized by that.

[0007]

As described above, the movable contact spring 5 having the movable contact portion 6 is a small switch which is caulked and connected to the end portion of the terminal 2 which is insert-molded in the resin body 1. By integrally molding a pair of receiving ribs 11 and 11 for receiving the lower surface sides of both sides of the crimped portion of 5, the receiving ribs 11 and 11 are integrally formed on the resin body 1 on the lower surface sides of both sides of the caulked portion of the movable contact spring 5. In the operation of the movable contact spring 5, the movable contact spring 5 is prevented from swaying to the left and right, the operation of the movable contact spring 5 is stabilized, and no contact failure occurs in the contact portion.
Moreover, the movable contact spring 5 is prevented from coming off at the caulked portion.

Further, a pair of pressing ribs 12, 12 for pressing both sides of the caulking portion of the movable contact spring 5 are integrally formed on the resin cover 9 mounted on the resin body 1 so as to face the receiving ribs 11, 11. The upper surfaces of both sides of the caulking portion of the movable contact spring 5 are pressed by the pressing ribs 12 and 12 formed integrally with the resin cover 9, and the both sides of the caulking portion of the movable contact spring 5 are received as receiving ribs 11 and 11. It is sandwiched by the pressing ribs 12, 12 to reliably prevent the movable contact spring 5 from swinging to the left or right during operation, stabilize the operation of the movable contact spring 5, and prevent contact failure at the contact portion. Moreover, the movable contact spring 5 is firmly prevented from coming off at the caulked portion.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings. The metal main body portion B is punched out in a state where the three terminals 2 are connected from a metal plate such as a hoop material. This metal main body B is insert-molded in the resin body 1. In this case, one of the three terminals 2 is formed with the fixed contact portion 4 which is a normally closed contact. Then, a fixed contact portion 4 which is a normally open contact is formed on the central terminal 2. The movable contact spring 5 is connected to the other terminal 2.

The fixed contact portions 4 and 4 are folded, and
The movable contact portion 6 formed at the tip of the movable contact spring 5 is also substantially C
For example, the fixed contact portions 4 and 4 arranged vertically are sandwiched so that the bifurcated movable contact portion 6 of the movable contact spring 5 is overlapped in plan view and can be brought into sliding contact with each other. Is done. The push button 7 is arranged so as to straddle the movable contact spring 5, and the projection 8 of the resin body 1 in which the terminals 2 ... Are insert-molded is fitted into the recess 10 of the resin case 9,
A small switch S is constructed.

A pair of receiving ribs 1 are provided on the resin body 1 for receiving the lower surface sides of both sides of the caulking portion of the movable contact spring 5.
1, 11 are integrally molded. Further, a pair of pressing ribs 12, 12 for pressing both sides of the caulked portion of the movable contact spring 5 are attached to the resin cover 9 mounted on the resin body 1 to receive the rib 1.
They are integrally formed so as to face the terminals 1 and 11. The receiving surfaces 11a of the receiving ribs 11, 11 may be widened similarly to the pressing surface of the pressing rib 12.

As described above, the resin body 1 is integrally formed with the pair of receiving ribs 11, 11 for receiving the lower surface sides of both sides of the caulking portion of the movable contact spring 5, whereby the lower surfaces of the both sides of the caulking portion of the movable contact spring 5 are integrally formed. The side is received by the receiving ribs 11 and 11 formed integrally with the resin body 1 to prevent the movable contact spring 5 from swinging to the left and right, stabilize the operation of the movable contact spring 5, and This prevents contact failure and prevents the movable contact spring 5 from coming off at the caulked portion. The pair of pressing ribs 12, 12 for pressing both sides of the caulking portion of the movable contact spring 5 are integrally formed on the resin cover 9 mounted on the resin body 1 so as to face the receiving ribs 11, 11. The upper surfaces of both sides of the caulking portion of the spring 5 are pressed by the pressing ribs 12 and 12 integrally formed with the resin cover 9, and the ribs 1 for receiving both sides of the caulking portion of the movable contact spring 5 are provided.
1, 11 and the holding ribs 12, 12 are sandwiched to surely prevent the movable contact spring 5 from swinging to the left or right when operating.
This stabilizes the operation of the movable contact spring 5, does not cause contact failure at the contact portion, and firmly prevents the movable contact spring 5 from coming off at the caulked portion.

[0013]

As described above, the present invention is a small switch in which a movable contact spring having a movable contact portion is caulked and connected to an end portion of a terminal insert-molded in a resin body.
Since the resin body is integrally molded with a pair of receiving ribs that receive the lower surfaces of both sides of the swaged part of the movable contact spring, the lower sides of both sides of the swaged part of the movable contact spring can be received by the integrally formed receiving ribs of the resin body. It prevents the movable contact spring from swaying to the left and right, stabilizes the movable contact spring operation, does not cause contact failure at the contact portion, and prevents the movable contact spring from coming off at the caulking portion. There is an advantage that can be done.

Further, since a pair of pressing ribs for pressing the both sides of the caulking portion of the movable contact spring are integrally formed on the resin cover mounted on the resin body so as to face the receiving ribs, both sides of the caulking portion of the movable contact spring are formed. The upper side of the is pressed by a pressing rib integrally molded with the resin cover, and both sides of the caulking part of the movable contact spring are sandwiched between the receiving rib and the pressing rib, and it is sure that the movable contact spring sways to the left and right. Therefore, there is an advantage that the operation of the movable contact spring can be stabilized, contact failure at the contact portion does not occur, and disengagement of the movable contact spring at the caulked portion can be firmly prevented.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway exploded perspective view of the above.

3A is a front view of the resin body side, FIG. 3B is a bottom view, FIG. 3C is a plan view, and FIG. 3D is a side view.

FIG. 4 is a partially broken exploded perspective view of a conventional example.

[Explanation of symbols]

 1 Resin Body 2 Terminal 5 Moving Contact Spring 6 Moving Contact 9 Resin Cover 11 Receiving Rib 12 Holding Rib

Claims (2)

[Claims] 1. A small switch in which a movable contact spring having a movable contact portion is caulked and connected to an end portion of a terminal insert-molded in a resin body, wherein the resin body has a lower surface on both sides of the caulked portion of the movable contact spring. A small switch characterized by being integrally formed with a pair of receiving ribs for receiving the side. 2. The resin cover mounted on the resin body is integrally formed with a pair of pressing ribs for pressing both sides of the caulking portion of the movable contact spring so as to face the receiving ribs. Small switch.