JPH0724179B2 - Assembling method of reversing spring of micro switch - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for assembling a reversing spring of a microswitch for assembling a reversing spring in a microswitch to a body.

[Background Art] Assembling of a reversing spring that drives a movable contact point according to an input from an actuator into a body is conventionally performed manually by using a jig, and thus productivity is low. There was a problem that there was a large variation in quality.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for assembling a reversing spring of a microswitch, in which productivity is improved by automation and variation in quality is eliminated. To provide.

DISCLOSURE OF THE INVENTION The present invention is, however, a reversing spring attachment method for movably attaching a reversing spring to a reversing spring support portion provided on a body, and provides a hoop member in which the reversing spring is continuously formed. The body is supplied to the hoop material, and the reversing spring that is connected to the hoop material is attached to the reversing spring support part of the body by changing the posture of the body with respect to the hoop material, and then the reversing spring attached to the body is separated from the hoop material. The body is not the main body and the reversing spring is assembled, but the body and the reversing spring are connected mainly by the hoop material in which the reversing spring is continuously formed. The inversion spring attached to the hoop material is separated from the hoop material, and both can be assembled in the processing die for the hoop material. It is a scam.

Hereinafter, the present invention will be described in detail with reference to the illustrated apparatus. The reversing spring 1 here is formed by punching the hoop material 2, and a movable contact 10 is attached to form a movable contact. The reversing action is obtained by the arch portion 11 having one free end. A large number of reversing springs 1 are continuously formed in the hoop member 2 along the longitudinal direction thereof, and while positioning is performed using the pilot hole 20, the hoop member 2 is intermittently fed in the direction shown by the arrow in FIG. To be

On the other hand, the body 3 to which the reversing spring 1 is assembled has a pair of fixed contacts 30 and 30 vertically facing one end in the longitudinal direction of the upper surface thereof.
And the common terminal 31 is arranged at the other end, and the lower surface is connected to the fixed contacts 30, 30 or the common terminal 31, or integrally formed with terminal pieces 32, 32, 32 is protruding. The common terminal 31 here integrally includes a locking piece 33 located near the center of the upper surface of the body 3 in the longitudinal direction.

The body 3 is supplied to an assembly section B in a mold for processing the hoop material 2 by a feeder 35 that guides the body 3 from above and below. As shown in FIG. 2, the assembly portion B includes a bending portion A for bending the arch portion 11 of the reversing spring 1 and a cutting portion for separating the reversing spring 1 from the hoop material 2. It is provided between C and C, and the insertion punch 6 is installed on the upper side, and the push-up pin 4 is installed on the lower side. The push-up pin 4 is driven by a plunger 43 which moves up and down by the horizontal movement of a cam plate 42 located therebelow. 44 in the figure is a cam plate
42 is a return spring, and 45 is a base.

Then, the body 3 which has been fed in the longitudinal direction by the feeder 35 and has reached the end of the feeder 35 is fed laterally by the feed cam 5 and transferred to the assembly section B as shown in FIG. At this time, the body 3 is fed horizontally to the hoop material 2
On the other hand, the movable contact 10 of the reversing spring 1 formed in the hoop material 2 is in the inclined state in which the common terminal 31 side is lowered and the fixed contacts 30 and 30 side are raised, as shown in FIG. 1 and FIG. Is located between the pair of upper and lower fixed contacts 30, 30. After that, the push-up pin 4 is lifted to move the body 3
The common terminal 31 is rotated about one of the pair of mounting holes 34, 34 formed in FIG.
The fixed contacts 30,3 of the body 3
Due to the one end on the 0 side contacting the push cam 46 and the reaction force of the arch portion 11 contacting the upper end of the locking piece 33, the body 3 moves in the feeding direction of the hoop material 2 as shown in FIG. 7 is pushed back in the opposite direction, the locking hole 34 of the reversing spring 1 is inserted into the locking groove 34 formed in the common terminal 31, as shown in FIG.
The hole edge of is locked. Then, as shown in FIG. 9, the arch 11 is pushed down by the downward movement of the insertion punch 6, and the free end of the arch 11 is locked by the locking piece 33. This completes the assembly of the reversing spring 1 and the body 3, and the body 3 attached to the hoop material 2 is sent together with the hoop material 2 and reaches the separating portion C to reach the body 3. After the reversing spring 1 in the assembled state is separated from the hoop material 2, the body 3 and the reversing spring 1 are taken out from the conveyance path of the hoop material 2.

As described above, according to the present invention, the reversing spring in a state before being separated from the hoop material is assembled to the body, and after the assembly is completed, the reversing spring is separated from the hoop material. Since the reversing spring, which is a smaller component than the body, can be supplied in the state of the hoop material that has a pilot hole etc., it is easy to adapt to automation and the positioning accuracy can be high. Since the reversing spring connected to the hoop material is attached to the reversing spring support part of the body by changing the posture, it does not give a large load to the reversing spring during assembly, so the quality is stable. is there.

[Brief description of drawings]

FIG. 1 is a sectional view of an apparatus according to the present invention, FIG. 2 is a plan view showing the feeding direction of a hoop material and a body, and FIGS. 3 to 9 are explanatory views of the assembling process of the same. 3 and 6 are plan views, FIG. 4, FIG. 5, FIG. 8 and FIG. 9 are side views, FIG. 7 is a sectional view taken along line XX in FIG. 6, and 1 is An inversion spring, 2 is a hoop material, and 3 is a body.

Claims (1)

[Claims] 1. A reversing spring mounting method for movably mounting a reversing spring to a reversing spring support portion provided on a body, comprising supplying the body to a hoop material in which the reversing spring is continuously formed. , A micro switch characterized in that, by changing the posture of the body with respect to the hoop material, the reversing spring connected to the hoop material is mounted on the reversing spring support portion of the body, and then the reversing spring mounted on the body is separated from the hoop material. Reversing spring assembly method.