JPH0128590Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a switch device in which, for example, a switch body is attached to a panel by engagement.

[Prior Art] This type of switch device has a switch body having a flange, an elastic piece with an engaging protrusion integrally provided, and the switch body is inserted into a mounting opening of a panel and engaged with the flange. It is fixed by sandwiching the peripheral edge of the panel's mounting opening between the protrusion and the protrusion. Conventionally, this type of switch body has a structure in which an elastic piece is provided so as to protrude from the switch body so as to extend in the thickness direction of the panel.

However, in the above configuration, when the thickness of the peripheral edge of the panel mounting opening is small, the length of the elastic piece becomes correspondingly small, so when the switch body is inserted into the panel mounting opening, the elastic piece bends. When deforming, a large force acts on the root portion of the elastic piece protruding from the switch body. For this reason, conventionally, there was a fear that cracks were likely to occur at the root portion of the elastic piece.

[Purpose of the invention] The present invention was made in view of the above points, and its purpose is to prevent cracks from occurring in the elastic piece of the switch body even when the thickness of the periphery of the panel mounting opening is small. The object of the present invention is to provide a switch device that can prevent this.

[Summary of the invention] The present invention is characterized in that an elastic piece provided with an engaging protrusion and provided integrally with the switch body is provided so as to extend in a direction along the flange of the switch body. Accordingly, the length of the elastic piece that can be flexibly deformed can be secured as long as necessary without being restricted by the thickness of the peripheral edge of the mounting opening of the panel.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, reference numeral 1 denotes a plastic switch body having an overall rectangular cylindrical shape, and a flange 2 is provided on the outer periphery of the upper end of the switch body. Reference numeral 3 designates an upper cylindrical portion of the switch body 1, which has a rectangular cylindrical shape and houses a knob 4 therein. Reference numeral 5 denotes a lower cylindrical part integrally formed at the lower part of the upper cylindrical part 3, which is formed to be slightly smaller than the upper cylindrical part 3, and has a plurality of fixed contacts inside as shown in FIG. An insulating substrate 7 having 6 is disposed. Reference numeral 8 denotes a connector housing that is attached to the lower cylindrical portion 5 facing diagonally downward with respect to the lower cylindrical portion 5 (see Fig. 1), which has a rectangular cylindrical shape, is connected to the fixed contact 6 inside, and is connected to the insulating substrate 7. A fixed connector terminal 9 is housed therein. and,
As shown in FIG. 5, the knob 4 is pivotally supported in an unillustrated insertion hole formed in the center of the side wall 3a of the upper cylinder portion 3, and is thus capable of reciprocating rotation in the direction of arrow A. Reference numeral 4b denotes a cylindrical portion protruding downward from the lower surface of the knob 4, and a substantially pin-shaped indenter 11 is housed inside this via a coil spring 10.
is opposed to the fixed contact 6 and presses against the valley-folded portion of the movable contact 12, which has a substantially doglegged cross section. Now, reference numeral 13 denotes two elastic pieces having a substantially U-shaped cross section, which are integrally provided in the upper cylinder part 3 of the switch body 1, and the leg parts 13a and 13a of these pieces are shown in FIGS. 3 and 4. The flexible portion 13b is connected to both ends of the longitudinal side wall 3a of the upper cylinder portion 3,
is formed so as to extend in the direction along the collar portion 2. 13c, 13c are engagement protrusions, for example, two engagement protrusions protruding from the middle part of the flexible part 13b, and these engagement protrusions 1
The distance D between 3c and the leg portion 13a is the bending portion 13b.
The length is set to a predetermined length so that when the leg portion 13a is bent and deformed in the vertical direction in FIG. 4, a large force due to the bending deformation is not applied to the leg portion 13a.

1, reference numeral 14 denotes a panel to which the switch body 1 is attached. When the switch body 1 is inserted into the mounting opening 14a formed in this panel, the elastic piece 13 moves in the direction of arrow B in FIG. After that, the peripheral edge 14b of the mounting opening of the panel 14 is sandwiched between the flange 2 and the engagement protrusion 13c, and the switch body 1 is moved to the lower surface of the panel 14. Fixed. Here, since the elastic piece part 13 is provided so as to extend in the direction along the flange part 2, the engagement of the elastic piece part 13 is completely independent of the thickness dimension of the mounting opening peripheral part 14b of the panel. The distance D between the protrusion 13c and the leg 13a can be freely set. Therefore, even if the thickness of the peripheral edge of the panel mounting opening is small and cracks occur at the base of the elastic piece as in the conventional case, the elastic piece 13 The distance D can be set so that no cracks occur in the elastic piece 13, thereby preventing cracks from occurring in the elastic piece portion 13.

[Effects of the invention] As is clear from the above description, the present invention includes an elastic piece that is provided with an engaging protrusion and is integrally provided to the switch body so as to extend in a direction along the flange of the switch body. Therefore, even when the thickness of the peripheral edge of the mounting opening of the panel is small, it is possible to prevent cracks from occurring in the elastic piece of the switch body.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a vertical cross-sectional side view showing the state in which the switch body is installed, Fig. 2 is a plan view, Fig. 3 is a side view, and Fig. 4 is a side view of Fig. 3. FIG. 5 is a partially cutaway bottom view taken along line -, and FIG. 5 is a sectional view taken along line - in FIG. In the drawing, 1 is the switch body, 2 is the collar, 1
3 is an elastic piece, 13c is an engaging protrusion, 14 is a panel, 14a is a mounting port, and 14b is a peripheral edge of the mounting port.

Claims (1)

[Scope of utility model registration request] A switch body having a flange is integrally provided with an elastic piece having an engaging protrusion, and the switch body is inserted into the mounting opening of the panel, and the mounting opening of the panel is installed between the flange and the engaging protrusion. 1. A switch device fixed by sandwiching a peripheral edge thereof, wherein the elastic piece portion is provided so as to extend in a direction along a flange portion of the switch body.