JPH069441Y2 - Mounting structure for electronic components - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting structure for mounting a shaft of an electronic component such as a variable resistor and a switch to a plate-shaped base such as a casing.

BACKGROUND ART A typical prior art is shown in FIG. The variable resistor 1 includes a rotary operation shaft 2 that is rotationally operated, a shaft 3 through which the rotary operation shaft 2 is inserted, and a main body 4 to which the shaft 3 is fixed.
Including and On both sides of the shaft 3, a pair of parallel locking surfaces 5,
6 is formed. The locking surfaces 5 and 6 are fitted into U-shaped notches 8 formed in the casing 7, whereby the shaft 3
Can be prevented from being angularly displaced. The outer screw formed on the outer periphery of the shaft 3 is screwed into the nut 9 so that the shaft 3 is attached to the casing 7.
Fixed to.

Problems to be Solved by the Invention In such a prior art, the engaging surfaces 5, 6 of the shaft 3 are fitted into the notches 8 to prevent mutual angular displacement between the shaft 3 and the casing 7. The problem with this prior art is that
Since the cutout 8 is open upward in FIG. 11, the shaft 3 may be displaced vertically in the cutout 8 to be displaced.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic component mounting structure in which the shaft of an electronic component can be mounted on the base body without displacement.

Means for Solving the Problems The present invention provides an electronic component mounting structure for mounting a shaft of an electronic component on a plate-shaped base body, wherein the shaft is formed with a concave groove extending perpendicularly to the axis line, and the base body has a groove. A locking member having a first notch for fitting the shaft at the position of the concave groove and having a second notch for fitting in the concave groove is used to elastically move the shaft in the axial direction and away from the base body. A force is generated, and this locking member locks to the base body in a state where the shaft is in contact with the bottoms of the first and second cutouts.

Operation According to the present invention, the first notch of the base body and the second notch of the locking member are fitted in the groove formed in the shaft, and the shaft contacts the bottoms of the first and second notches. In the contact state, the locking member is locked to the base body, so that the shaft is not displaced along the base body.

According to the invention, the locking member fitted in the groove is
Since the elastic force is generated in the axial direction of the shaft and in the direction away from the base body, the shaft is not displaced in the axial direction thereof in the axial direction and relatively to the base body. It is possible to prevent the positional deviation in the axial direction.

Embodiment FIG. 1 is an exploded perspective view of an embodiment of the present invention. In this embodiment, the variable resistor 11 is attached to the casing 13, which is a plate-shaped base, using the locking member 12. The variable resistor 11 includes a rotary operation shaft 14 that is angularly displaced about the axis, a shaft 15 through which the rotary operation shaft 14 is inserted, and a main body 16 to which an end of the shaft 15 is fixed. Axis 15
A pair of concave grooves 17 and 18 are formed on the side portions of the.

FIG. 2 is a sectional view perpendicular to the axis of the shaft 15 in the concave grooves 17 and 18. The bottom surfaces 19 and 20 of the concave grooves 17 and 18 are
Perpendicular to the axis of and parallel to each other. The casing 13 is formed with a first notch 21 that opens upward in FIG. The bottom 22 of the first notch 21 is formed in an arc shape with the same radius of curvature as the arc-shaped outer peripheral surface 23 of the shaft 15.

The locking member 12 is a U-shaped second opening opened downward in FIG.
It has a notch 24. The bottom 25 of the second cutout 24 is
It has an arcuate shape having the same radius of curvature as the arcuate outer peripheral surface 23 of the shaft 15. The left and right legs 26, 27 with respect to the second notch 24 of the locking member 12 are bulged and curved in a direction away from the casing 13, and both ends 28, 2 thereof are formed.
9; 30 can abut on the front surface of the casing 13. The locking member 12 has a handle 31 projecting from the end portion 30 to the side opposite to the casing 13.

On the casing 13, a pair of locking claws 32 and 33 are formed by cutting and raising the casing 13 on both sides of the first notch 21 and protruding toward the bottom 22 side, that is, downward in FIG. The locking claws 32 and 33 are fitted and locked in the locking holes 34 and 35 formed in the legs 26 and 27 of the locking member 12, whereby the locking member 12 of FIG. The upward displacement is prevented.

FIG. 4 shows the locking member 1 in which the variable resistor 11 is fixed to the casing 13.
FIG. 3 is a horizontal cross-sectional view showing a state of attachment using
The figure is a vertical sectional view showing the mounting structure. Groove 17,
The first notch 21 of the casing 13 and the second notch 24 of the locking member 12 are fitted in the inside of 18. First notch 21
As shown in FIG. 3, the bottoms 22 and the bottoms 25 of the second cutouts 24 are in contact with the surfaces 23 and 23a of the shaft 15, respectively. ,
It fits into the locking holes 34 and 35 and locks. In this way, the shaft 15 is prevented from being displaced in the vertical direction in FIG. 1, and the displacement along the casing 13 is prevented. Also, the locking member 1
The second legs 26, 27 generate elastic force in the axial direction of the shaft 15 and in the direction away from the casing 13. Therefore, the shaft 15 is spring-biased downward in FIG. 4 and leftward in FIG. Thus, the shaft 15 does not displace in the axial direction of the shaft 15 with respect to an external force less than the elastic force,
In this way, displacement in the axial direction is prevented.

FIG. 5 is a perspective view of a part of the casing 13 according to another embodiment of the present invention. The parts corresponding to those in the above-described embodiment are designated by the same reference numerals. It should be noted that the first notch 21 is
Sides 3 that are parallel to each other and are fitted into the grooves 17 and 18 of the shaft 15.
7 and 38, and parallel sides 37 and 38 having sides 39 and 40 which are continuous from the parallel sides 37 and 38 to the upper side in FIG. By forming the sides 39 and 40 in this manner, the work of fitting the concave grooves 17 and 18 of the shaft 15 into the first notch 21 can be easily performed.

FIG. 6 is a perspective view of still another embodiment of the present invention,
Corresponding parts in the previous embodiments are designated by the same reference numerals.
Locking holes 41, 42 are formed in the casing 13, and the leg portions 26, 27 of the locking member 12 are fitted in the locking holes 41, 42.
The locking claws 43 and 44 formed on the above are locked.

FIG. 7 is a perspective view of still another embodiment of the present invention.
Engagement holes 45, 46 are formed in the casing 13, and the leg portions 26, 27 of the engagement member 12 are formed in the engagement holes 45, 46.
The protrusions 47 and 48 formed on the can be fitted and locked.

FIG. 8 is a sectional line VIII-VI of the protrusion 47 in FIG.
It is the sectional view seen from II. The protrusion 47 is formed on the casing 13.
It is pressed so that it projects to the side. Second notch 24
Has sides 49 and 50 which are parallel to each other, and sides 51 and 52 which are continuous with the sides 49 and 50 and spread downward in FIG. 7. This facilitates fitting of the recessed grooves 17, 18 of the shaft 15 into the second cutout 24. Bottom 2 of second notch 24
5, a small slit 53 is formed, so that the spring force of the leg portions 26, 27 in the width direction (left and right direction in FIG. 7) can be exerted. Therefore, the parallel sides 49, 50 of the second notch 24 elastically elastically form the bottom surface 1 of the concave groove 17, 18.
It becomes possible to contact 9,20. This eliminates rattling of the shaft 15. Such a slit 53
May also be formed in the bottom 22 of the first notch 21.

FIG. 9 is a perspective view of still another embodiment of the present invention.
A plurality of first notches 21 are formed in the casing 13,
The locking member 12 is formed with a plurality of second notches 24 individually corresponding to the respective first notches 21. In this way, the shafts 15 of electronic components such as the plurality of variable resistors 11 can be fixed all at once.

In each of the above-mentioned embodiments, the first notch 21 is formed so as to open upward in the drawing, but as another embodiment of the present invention, as shown in FIG. 10, the first notch 21 is formed.
Is connected to a fitting hole 54 formed in the casing 13, the shaft 15 is inserted into the fitting hole 54, and the first notch 21
The concave grooves 17 and 18 may be fitted into the groove.
The same applies to the other second notch 24.

Effects As described above, according to the present invention, it becomes possible to mount the shaft of an electronic component on a base such as a casing without causing positional displacement.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, and FIG. 2 is a shaft 1
5 is a sectional view taken along the axis perpendicular to the concave grooves 17 and 18 of FIG.
FIG. 4 is a vertical sectional view showing the mounting state of the embodiment shown in FIG. 2, FIG. 4 is a horizontal sectional view showing the mounting state of the embodiment shown in FIGS. 1 to 3, and FIG. FIG. 6 is a perspective view showing a first notch 21 of another embodiment of the present invention, FIG. 6 is an exploded perspective view of a part of another embodiment of the present invention, and FIG. 7 is a further embodiment of the present invention. Part of the exploded perspective view, FIG. 8 is a sectional view taken along section line VIII-VIII of FIG. 7, FIG. 9 is an exploded perspective view of part of another embodiment of the present invention, and FIG. Another embodiment of the present invention is a front view near the first notch 21 and FIG. 11 is an exploded perspective view of a typical prior art. 11 ... Variable resistor, 12 ... Locking member, 13 ... Casing, 15 ... Shaft, 17, 18 ... Recessed groove, 21 ... First notch, 22, 25 ... Bottom, 24 ... 2nd notch, 3
2, 33 ... Locking claw, 34, 35, 45, 46 ... Locking hole, 47, 48 ... Locking protrusion

Claims (1)

[Scope of utility model registration request] 1. An electronic component mounting structure for mounting a shaft of an electronic component on a plate-shaped base body, wherein the shaft is formed with a concave groove extending perpendicularly to the axis line, and the base body is provided with a shaft at the position of the concave groove. The locking member having the first notch for fitting with and having the second notch for fitting in the groove produces elastic force in the axial direction of the shaft and away from the base body. An attachment structure for an electronic component, wherein the engagement member is engaged with the base body while the shaft is in contact with the bottoms of the first and second notches.