JPS596579Y2 - Switch mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch mounting structure for fixing a switch so that a movable contact piece of the switch can move over a fixed contact on a circuit board.

The purpose of this invention is to enable easy switching by attaching it to the fixed contacts of a circuit board, to obtain stable switching operation and excellent switch operability, and to protect the board and printed wiring from pressing force during operation. The purpose of the present invention is to provide a mounting structure for a switch that can be installed easily.

To explain the present invention below, Fig. 1 shows the structure of the switch assembly with the mounting part, Fig. 2 is an exploded perspective view of the switch assembly, and Fig. 3 is a structure showing the mounting state of the switch assembly. FIG.

In particular, in FIG. 2, reference numeral 1 denotes a moving body with an operating knob 2 protruding from its upper surface, and a bottomed cylindrical portion 3 projecting downward from the center bottom of the moving body 1. One side is provided with elasticity shaped along this side, and an engaging portion 4a is provided at the tip.
A retaining portion 4 is provided.

The movable body 1, the operating knob 2, the bottomed cylinder portion 3, and the engaging portion 4 are integrally formed of a resin material.

A movable contact piece 5 is attached within the bottomed cylindrical portion 3 of the movable body 1, and a portion of the movable contact piece 5 is provided in a state protruding from the bottomed cylindrical portion 3.

Reference numeral 6 denotes a frame-shaped support frame for accommodating and supporting the above-mentioned moving body 1, through which the bottomed cylindrical portion 3 of the moving body 1 passes through the center, and having a range in which the moving body 1 can move. The engaging portion 4a of the engaging portion 4 is provided on one side of the support frame 6, that is, on the side corresponding to the retaining portion 4 of the movable body 1. It has a plurality of concave grooves 8 that can be successively fitted into each other.

Furthermore, the four corners of the bottom of the support frame 6 are provided with claw portions 9 at the tips.
The engaging pieces 10, 10, .

A stepped portion 1 is provided on the outer periphery of the engaging pieces 10, 10...
0A, IOA... are formed respectively.

The engaging pieces 10, 10, . . . and the engaging pieces 11, 11 of the support frame 6 are integrally formed of a resin material.

Reference numeral 12 designates a switch lid body which is attached to the support frame 7 from above the movable body 1 in order to hold the movable body 1 movably within a predetermined range on the support frame 6, and the operating knob 2 of the movable body 1 is mounted in the center. It has a through hole 13 passing through it, and downward elastic pieces 14, 14 at both ends.

The elastic pieces 14.14 are the engagement pieces 10 of the support frame 6...
It has claw parts 14A, 14A, etc. that elastically engage with the stepped parts 10A, IOA, etc. provided on the upper end. has raised parts 14B, 14B which protrude outward and are inclined, and the lower ends of these raised parts 14B, 14B are attached to the claw parts 1 located on both sides of each.
4A, 14A and 14A, 14A are connected.

In addition, the inner side of the rising parts 14B, 14B is the cut arrow part 15.15.
The elastic pieces 14 and 14 are formed integrally with the switch cover 12 from a resin material.

Therefore, in the assembly structure of this switch structure, the movable body 1 is housed in the support frame 6, and the bottomed cylindrical portion 3 of the movable body 1 is inserted into the hole 7, and the engaging portion 4 is inserted into the hole 7. The engaging portion 4a of
is supported while being fitted into the groove 8.

Then, the movable body 1 becomes movable within the range of the hole 7 in the support frame 6, and the retaining portion 4a sequentially moves in the groove 8 according to the movement, and the elasticity of the engagement piece 4 allows the movable body 1 to move. Gives moderation.

Next, the operating knob 2 of the moving body 1 is inserted into the through hole 13 of the switch cover 12 from above the assembly of the moving body 1 and the support frame 6, and the elastic pieces 14 and 14 are attached to both ends of the support frame 6. position and press-fit downward.

In this case, the claw portion 14A of the elastic piece 14.14...
are pressed against both ends of the support frame 6, and the elastic pieces 14, 14 are curved outward and lowered, and the claws 14A...
. . . is the stepped portion 10A of the support frame 6 .
If it corresponds to ..., the claw part 14A and the step part 10A...
The switch lid body 12 and the support frame 6 are coupled together.

By coupling the switch cover body 12 and the support frame 6, the movable body 1
is fully installed.

As is clear from FIGS. 1 and 3, in the above switch assembly, the engaging pieces 10 of the support frame 6 are press-fitted into the mounting holes 22 of the circuit board 21, which is the mounting member. Ru.

In other words, the claw portions 9 of the engaging pieces 10...
... into the mounting hole 22 using its elasticity, and then press the claw part 9 into the mounting hole 22.
... to prevent it from coming out upwards.

Furthermore, a member having a hole 32 large enough for the switch lid 12 to fit therein, such as the upper plate 31, is attached to the switch lid 12, and the raised parts 14B, 14B are brought into contact with the edge of the hole 32 of the upper plate 31. engagement to install the switch assembly.

The edge of the hole 32 has notched grooves 33, 33 into which the engaging pieces 11, 11 of the support frame 6 fit, and the notched grooves 33 and the engaging pieces 11 prevent movement in the horizontal direction. .

Reference numeral 35 designates a cabinet having a hole 36 in the operating range of the operating knob 2 of the switch assembly, through which the knob 2 is inserted, and covering the upper surface of the switch assembly.

Therefore, as is clearly seen in FIG.
By moving the movable body 1 with the operating knob 2, the movable contact piece 5 moves the wiring section on the circuit board 21 to perform a switch operation.

Although FIG. 3 shows a configuration in which the top plate 31 and the cabinet 35 are provided, the top plate 31 can also be used as the cabinet 35 when in use.

As described above, in the switch structure of the present invention, the moving body 1,
The support frame 6 and the switch cover 12 are made up of a resin material, for example, and the elasticity of the resin material is used to assemble and connect them. Since the structure is attached using three-dimensional retaining pieces and elastic pieces, assembly is very simple without requiring fixing parts such as screws.

Therefore, the switch can be mounted on any fixed contact on the circuit board to switch that contact, which is very convenient for inspection of circuit parts related to any fixed contact on the circuit board. be.

Furthermore, since the engaging pieces, elastic pieces, etc. are skillfully utilized to simplify assembly and disassembly operations, parts such as movable contact pieces can be replaced without any tools.

Furthermore, since the through hole 13B provided in the switch cover is smaller than the outer size of the plate-like structure of the movable body 1, it prevents dust and water droplets from entering, thereby preventing contact failure. Occurrence can be prevented.

Furthermore, the switch mounting structure of the present invention is roughly divided into three parts, and all of these parts are designed to be easily molded with resin, so it can be provided at a very low cost. etc. The effects are enormous.

According to the present invention, since the switch body is supported by the top plate 31 so as not to move toward the board,
Since the movable contact piece 5 can be moved with a constant contact pressure with respect to the circuit board, the contact pressure is always stable and the reliability of the switch is improved.

Furthermore, since it is possible to prevent a force that would bend the board from acting on the board (only the restoring force of the movable contact piece 5 acts), it is possible to protect the board and printed wiring, and to protect the board. There is no fear that smooth sliding operation will not be possible due to curvature.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of the switch assembly of the present invention;
FIG. 2 is an exploded perspective view of the switch assembly, and FIG. 3 is a structural sectional view showing the switch assembly in its installed state. 1: Moving body, 2: Operation knob, 6: Support frame, 10 and 11
: Engagement piece, 12: Switch lid, 14: Elastic piece, 14A
: Claw part, 14B: Standing part.

Claims (1)

[Claims for Utility Model Registration] In a device in which the switch body is disposed on a fixed contact of a circuit board so that the movable contact piece of the switch can slide on the fixed contact of the circuit board, the movable contact piece is parallel to the circuit board at a constant interval. A top plate 31 that is attached to a housing etc., an operation knob 2 on the top surface,
A movable body 1 having a movable contact piece 5 on the bottom surface, and a holding piece that stores and holds the movable body 1 so that it can reciprocate in the horizontal direction, and that fits into a positioning hole on the base plate on the bottom side. 10, and a support frame provided on the outer wall with a retaining piece 11 that, when inserted into the through hole 32 of the upper surface plate 31, fits into the notch 33 of the through hole to prevent movement in the horizontal direction. 6, and a rectangular through hole 13 in the center of the top portion through which the operating knob 2 is inserted.
It has a substantially U-shaped cross section so that it can be fitted into the support frame 6 with the movable body 1 housed therein, and has elasticity to prevent it from coming off when it is fitted into the through hole 32 of the top plate 31. A switch mounting structure characterized by comprising a switch cover body 12 provided with a piece 14B.