JPH0127541Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electrical component mounting structure that allows electrical components to be easily mounted.

Conventionally, when attaching electrical equipment such as a switch to a base, it is generally done with screws on both sides, but if you tighten the first screw on both sides, the through hole of the other screw and the screw hole will not connect. Since they may not match, it is necessary to tighten them loosely at first and then fully tighten them, which is cumbersome.

This idea was made in view of the above circumstances.
To provide a mounting structure for electrical components that allows the electrical components to be easily mounted with a single screw.

An embodiment of the present invention will be described below as applied to a switch device for an automobile.

In FIGS. 1 and 2, reference numeral 1 denotes a horizontally elongated plastic base, which is fixed to a column tube, and has a cylindrical portion 2 formed in the center for passing the steering shaft.
A translucent plastic light guide 3 and a cover 4 covering the light guide 3 are arranged and fixed on the front surface. A holder 5 is inserted through a long hole 6 formed in the base 1 and is supported rotatably in the direction of arrow A and the direction opposite to arrow A around a shaft 5a. The lever 7 is connected so as to be rotatable in the direction of the arrow B and the direction opposite to the arrow B. The front end of the lever 7 is inserted through a long hole 9 formed in the cover 4 and protrudes to the front side, and the lever 7 has a lever 7 that extends to the front side through a long hole 9 formed in the cover 4. is inserted through the elongated hole 6 and protrudes from the back side of the base 1. Reference numeral 10 denotes a bracket whose shaft portion 10a is rotatably supported in a circular hole 11 formed in the base 1, and the rear end of the bracket 10 protrudes from the back side of the base 1 so as to sandwich the rear end of the lever 7. A pair of projecting pieces 10b are provided, so that when the lever 7 is rotated in the direction of arrow B and the direction opposite to arrow B, the bracket 10 is rotated in the direction of arrow C and the direction opposite to arrow C. Reference numeral 12 designates a turn signal switch, the base frame 13 of which is fixed to the base 1 in a bridge-like manner so as to intersect with the bracket 9 on the rear side. There is provided an operator that moves in conjunction with the rotation and a switch element that is operated by the operator to blink the right or left turn signal lamp. Reference numeral 14 denotes a daymer bashing switch fixed to the back surface of the base 1, and the rear end of the holder 5 is in contact with the operating portion 14a of this switch. Therefore, when the lever 7 is rotated in the direction of arrow A, the holder 5 The operator 14a is pushed in by rotating together with the lever 7 in the same direction. Further, in FIG. 3, 15 is a hasard switch, 16 is a parking switch, 17 is a defogger switch,
These switches 15 to 17 are fixed to the back surface of the base 1, and push buttons 18 to 20 are provided on the cover 4 side.
are operated respectively. Reference numeral 21 denotes a sliding volume for adjusting the brightness of a night illumination lamp (not shown). operated by.

Next, the mounting structure of the turn signal switch 12 and the volume 21 will be explained with reference to FIGS. 4 to 7. Reference numeral 23 denotes a recess formed in the lower part of the base 1 so as to be depressed toward the rear. It protrudes from the back. Note that the lower surface of the peripheral wall 24 is mostly open. 25 is a horizontally long first insertion hole formed in the stepped upper surface between the shallow upper half and the deep lower half of the recess 23 in the peripheral wall 24; 26 is the horizontally long first insertion hole formed in the upper half of the right side of the peripheral wall 24; This is a second insertion hole that is long from front to back. The base 1 has a first insertion hole 26.
There is a small hole 27 for screwing in the lower right corner corresponding to the
At the same time, a boss 28 is provided protruding from the upper back surface corresponding to the second insertion hole 26, and a small hole 29 for screwing is formed at the tip of the boss 28. Therefore, the base 1 is formed by a mold that is divided into front and rear halves, and therefore, the depth direction and the protrusion direction of the recess 23 and its surrounding wall 24 coincide with the mold-cutting direction of the base 1. Therefore, simultaneous molding with the base 1 is possible. As shown in FIG. 8, a core 31 is provided protruding from the front mold 30 of the mold to mold the inner surface of the recess 23, and a hole 33 is formed in the rear mold 32 to mold the outer surface of the recess 23. By partially touching each other (this contact part is indicated by D in the figure),
Both the first and second insertion holes 25 and 26 can be molded simultaneously without creating an undercut. On the other hand, mounting legs 13a, 13b and 21a, 21b are provided at both ends of the base frame 13 and both ends of the volume 21 of the turn signal switch 12, respectively.
Through holes 34 and 35 for screws are formed in 1b. To attach the turn signal switch 12 and volume 21 to the base 1, first,
The mounting legs 13a and 21a are inserted and held in the first insertion hole 25 and the second insertion hole 26, and then the mounting legs 13
b and 21b to the rear surface of the lower right corner of the base 1 and the tip end surface of the boss 28, align the through holes 34 and 35 with the small holes 27 and 29, and in this state insert the self-tapping screws 36 and 37 into the through hole 34. and 35
through the mounting legs 13b and screw them into the small holes 27 and 29.
and 21b are fixed.

As is clear from the above explanation, the present invention has a structure in which one end of the electrical component is inserted and held in the insertion hole formed in the base, and the other end is screwed to the base, so the electrical component can be inserted with one screw. It can be fixed and work efficiency is improved. Moreover, according to the present invention, a concave portion whose peripheral wall protrudes in the mold-cutting direction is integrally formed on the base, and a plurality of insertion holes for inserting and holding one end of a plurality of electrical components are formed in this peripheral wall. Therefore, unlike the case where the insertion holes are provided in separate locations, only one recess is required for simultaneous molding of the insertion holes, resulting in excellent effects such as simplifying the structure of the mold.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the switch device with the left half removed, Fig. 2 is an enlarged longitudinal sectional view taken along the line - in Fig. 1, and Fig. 4 is a rear view, FIG. 4 is an enlarged perspective view of the main parts, FIG.
FIG. 7 is a vertical cross-sectional view taken along the line - in FIG. 4, and FIG. 8 is a partial cross-sectional view of the mold. In the figure, 1 is a base, 12 is a turn signal switch, 21 is a volume, 23 is a recess, 24 is a peripheral wall of the recess, 25 and 26 are first and second insertion holes,
Reference numerals 30 and 31 designate front and rear molds, and 36 and 37 designate self-tapping screws.

Claims (1)

[Scope of utility model registration request] A recess whose peripheral wall protrudes in the mold-cutting direction of the base is integrally molded on a plastic base, a plurality of insertion holes are formed in the peripheral wall of the recess, and a plurality of electrical components are inserted into the insertion holes with one end thereof respectively. A mounting structure for electrical components, which is secured by inserting and holding the other end to the base with screws.