JPS62193020A - Manufacture of gang-type push-button switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a multiple push button switch used in electric fans and the like.

Conventional technology Conventionally, this type of multiple push button switch is shown in FIG.

The configuration was as shown in FIGS. 6 and 7. First, the overall structure will be described. Reference numeral 101 is a button made of resin and has a low matching groove 102. Reference numeral 103 denotes a lever made by punching a metal plate, and has a locking convex portion 104 and a movable plate support groove 105. 106 is a frame made by bending a metal plate, and has a fitting groove 119 into which the lever 103 is inserted, and a side plate 107. It has a caulking ear portion 108. Reference numeral 109 denotes a contact piece base, which is made of an insulating material such as resin, and is supported by caulking on the frame 106 at caulking ears 108 . A fixed contact piece 11 having a fixed contact 110 is mounted on the contact piece base 109 of
1, and a movable contact piece 113 having a movable contact 112 is attached opposite to the fixed contact 110. Reference numeral 114 denotes an interlocking plate having an engaging portion 115 that engages with the locking convex portion 104 provided on the lever 103. Both ends of this interlocking plate 114 are loosely engaged with the side plates 107, and one side is elastically connected by a locking spring 116. is under pressure. In addition, a movable plate 117 is fitted and supported in the movable plate support groove 105 of the lever 103, and this movable plate 11
The notch 120 of 7 is joined to the movable contact piece 113, and the lower end is loosely engaged with the contact piece base 109. Also frame 106
A return spring 118 is provided between the button 101 and the button 101.

Next, the assembly method will be described. Each lever 103 is bonded to the fitting groove 102 of the button 101 without unscrewing. Next, the lever 103 is passed through the return spring 118 and then fitted into the lever fitting groove 119 of the frame 106. Next, after passing the four-way spring 116 through one end of the interlocking plate 114, the interlocking plate 114 is inserted into the side plate 1.
Let 07 play. Next, the movable plate support groove 1 of the lever 103
The movable plate 117 is fitted and supported in 05. Next frame 10
After fitting the crimp lug 108 of No. 3 into the contact piece base 109, swage the crimp lug 108 to the frame 103 and the contact piece base 109.
and fix it by caulking.

Problems to be Solved by the Invention In such a conventional configuration, the lever 103 and the interlocking plate 1
4 is made of metal, and is made by punching a metal plate and then applying anti-rust treatment to the surface. During assembly, the levers 103 are individually fitted into holes in the frame 106, and then the interlocking plates 114 are loosely fitted into the holes in the side plates 10 of the frame 106, which is a laborious process. Therefore, there are problems in that the unit price of parts is high, the number of assembly steps is high, and the cost is high.

The present invention solves these problems by making the stem and interlocking plate resin, and by molding them together via a cuttable part, creating cheaper parts and reducing the number of man-hours during assembly. The purpose is to

Means for Solving the Problem In order to solve this problem, the present invention provides a plurality of operating stems that are biased in one direction, a contact that is closed by movement against the biasing force, and a contact that is engaged with the stem. and an interlocking plate biased in one direction to maintain the contact in a closed state, and the stem and the interlocking plate are connected and molded via a cuttable portion,
The switch is manufactured by assembling the connected state into the main body case, and using this assembling force to separate the two and place them at a predetermined position.

As a result, the stem and the interlocking plate each act as separate parts when assembled and twisted, but can be handled as a single part when manufacturing and assembling the parts.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1, 2, and 4. In the figure, 1 is a button made of resin, and has a fitting groove 2 on its back surface. 3 is a stem made of resin and has a locking convex portion 4. A pair of elastic leg pieces 5. and elastic leg piece 5
A hook-shaped retaining protrusion 6 is formed at the tip of the movable contact piece, and a lip 7 is provided between the flexible leg pieces 6 to bias the movable contact piece downward. 8
1 is a box-shaped main body case made of resin with an open top, and has a plurality of fixed contacts 9 and a movable contact piece 11 having a movable contact 1o facing the fixed contacts 9 attached to the bottom.

A hole 12 for installing the elastic leg piece 6 of the stem 3 and a projection piece 13 for guiding and positioning the stem 3 are provided at the bottom of the bent box-shaped main body case 8. Reference numeral 14 denotes an interlocking plate having an engaging portion 15 that engages with the locking convex portion 4 of the stem 3. The interlocking plate 14 is inserted from the ground side of the box-shaped main body case 28, and is elastically pressed in one horizontal direction by a locking spring 16. has been done.

17 is a return spring provided between button 1 and stem 3, and 61. be. 18 is a connecting portion between the stem 3 and the interlocking plate 14.

Next, the assembly method will be explained. With the stem 3 and the interlocking plate 14 connected by the connecting part 18, a protrusion 13 for guiding the stem 3 is provided on the bottom of the main case 8 from the top surface of the main case 8.
At the same time, the stem 3 and the interlocking plate 14 are separated and assembled using this assembly force, and the button-shaped engagement protrusion 6 at the tip of the elastic leg piece 5 of the stem 3 is inserted into the hole 12 provided at the bottom of the main body case 8. to engage. A locking spring 16 is installed on a protrusion at one end of the interlocking plate 14. Next, attach the return spring 17 to the stem 3.
The fitting groove 2 of the button 1 is fitted into the upper end of the stem 3.

Effects of the Invention As described above, according to the present invention, the stem and the interlocking plate are made of resin, are connected and molded through a cuttable part, are assembled into the main body case in the connected state, and are assembled using the assembly force. By using a manufacturing method for a switch in which both parts are separated and placed in a predetermined position, the stem and interlocking plate can be molded without runners (the interlocking plate also serves as a runner for the stem), and the main body case can be easily molded. Since there is no need to separate the interlocking plate and stem just before assembly, it becomes easier to manage individual parts, thereby reducing parts costs. Even if there are multiple stems with different shapes, they are connected at just the right size just before being assembled into the interlocking plate, so no mistakes will be made when assembling them. Since it is possible to incorporate a plurality of twisted stems and the interlocking plate into the main body case at the same time, it is possible to achieve the effect that it is possible to significantly reduce the number of assembly steps.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the stem and interlocking plate of a multiple push button switch according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the entire assembled state of the multiple push button switch according to the present invention. 3 is a front sectional view of a multiple push button switch according to an embodiment of the present invention, FIG. 4 is a side sectional view of the same, FIG. 5 is an overall perspective view of a conventional multiple push button switch, and FIG. The figure is a front view of the same, and FIG. 7 is a side sectional view of the same. 3...Stem, 8...Body case, 14...
Interlocking plate, 18...Connection part. Name of agent: Patent attorney Toshio Nakao and one other personfδ
--- Planning and fishing plan - To the heavens @ Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A plurality of operating stems that are biased in one direction, contacts that are closed by movement against the biasing force, and interlocking plates that are biased in one direction that engage the stems and maintain the contacts in a closed state. The stem and the interlocking plate are connected and molded through a cuttable part, and the connected state is assembled into the main body case, and the assembly force is used to separate the two and place them in a predetermined position. A method for manufacturing a multiple push button switch.