JPH0525787U - Mounting structure for electrical components - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose was to reduce the installation time when installing electrical components in a chassis. [Structure] A bearing 1 of an electric component 17 is rotatably provided with a stopper 7 having an ear piece 9 protruding outward, and a chassis 14 is provided with a mounting hole 15 having a different shape into which the stopper 7 can be inserted. The stopper 7 is rotated by rotating the stopper 7.
The chassis 14 is sandwiched between the bearing 1 and the bearing 1, and the chassis is sandwiched between the bearing and the stopper body to fix the electric parts to the chassis.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for mounting an electric component such as a rotary variable resistor on a chassis.

[0002]

[Prior Art]

 FIG. 13 is a front view showing a mounting structure of a conventional rotary variable resistor to a chassis, 21 is a rotary variable resistor, 22 is a bearing mounted on an end face of the variable resistor 21, In order to fix the device 21 to the chassis 23, after inserting the above-mentioned bearing 22 into the hole 24 of the chassis 23, tighten the nut to the screw 25 on the peripheral edge of the bearing 22 to attach the nut 26 and the end face of the variable resistor 21 to the chassis. He was holding 23.

[0003]

[Problems to be solved by the device]

 However, in the mounting structure of the electric parts as described above, the nut 26 is fastened to the screw 25 of the bearing 22 to mount the variable resistor 21 to the chassis 23, which is troublesome and time-consuming. there were.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to stop the mounting of the bearing by tightening the screw and the nut and to perform the mounting with one touch, which can shorten the mounting time. It is intended to provide a mounting structure for electric parts.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a stopper having ear pieces protruding outward is rotatably provided on a bearing of an electric component, and the stopper can be inserted into a chassis. A mounting hole having a different shape is provided, and the chassis is sandwiched between the stopper body and the bearing by rotating the stopper body.

[0006]

[Action]

 Since the present invention has the above-mentioned configuration, when mounting the electric parts on the chassis, the stopper is inserted into the differently shaped hole of the chassis to project the stopper outward from the chassis, and then the stopper is attached. By rotating the ear piece, the chassis can be easily fixed by holding the chassis between the bearing and the ear piece of the stopper body, that is, this mounting operation can be performed by one-touch rotation of the ear piece of the stopper body. The installation time can be shortened compared to the conventional one.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 12 are explanatory views of a mounting structure for electric parts of the present invention. FIG. 1 is a front view of a state in which a variable resistor is mounted on a chassis, FIG. 2 is a right side view, and FIG. Front view, FIG. 4 is a right side view of the same, FIG. 5 is a cross-sectional view taken along the line AA of FIG. 3, FIG. 6 is a cross-sectional view taken along the line BB of FIG. 4, and FIG. 7 is a sectional view taken along the line CC of FIG. 7, FIG. 9 is a rear view of the stopper, FIG. 10 is an exploded perspective view before the stopper is fitted to the bearing, and FIG. 11 is the bearing when the bearing is attached to the chassis. FIG. 12 is an explanatory view showing a meshing state between the claw teeth of FIG.

In FIG. 10, reference numeral 1 denotes a bearing made of an insulating material, which is composed of a substrate 2 and a cylindrical portion 3, and has a large-diameter flange portion 4 at an end of the cylindrical portion 3, and an outer peripheral surface of the cylindrical portion 3. A pair of claw teeth 5 is formed on the opposite side of each other. Further, on the upper surface of the substrate 2, there is provided a rotation stopper 6 which is inserted into a mounting hole of a chassis described later. Reference numeral 12 denotes a shaft insertion hole of a variable resistor described later. A stopper 7 is also made of an insulating material, and is a hollow cylindrical portion 8 that fits into the cylindrical portion 3 of the bearing 1, and a pair of ear pieces 9 that are integrally opposed to each other and project outward from the cylindrical portion 8. Have. Eight narrow grooves 10 are formed on the outer peripheral surface of the cylindrical portion 8 to form four elastic arms 11 inclined inward, and the tip ends of the elastic arms 11 are shown in FIG. As shown, a claw 13 having a tapered surface is formed inward. Reference numeral 9a is a claw formed on the inner peripheral wall of the ear piece 9. In FIG. 2, reference numeral 14 denotes a chassis made of a metal plate. The chassis 14 has a mounting hole 15 of a different shape for loosely engaging a stopper 7 having a pair of ear pieces 9 and a surface of the base plate 2 of the bearing 1. A hole 16 is formed integrally with which the above-described rotation stopper 6 projecting from the above is locked.

As shown in FIG. 10, the stopper 7 is fitted to the outer periphery of the cylindrical portion 8 with the claw 9a guided by the groove 3a of the cylindrical body 3 of the bearing 1, and as shown in FIG. Each elastic arm 11 of 7 is elastically pressed against the outer peripheral surface of the cylindrical portion 8, and the tip of the elastic arm 11 is locked to the collar portion 4 to prevent upward withdrawal. As shown in FIG. 11, the claw 13 at the tip of the elastic arm 11 meshes with the claw teeth 5 provided on the outer peripheral surface of the cylindrical portion 3 of the bearing 1, and applies a force in the time direction of FIG. Then, the pawl 13 gets over the pawl teeth 5 and the stopper body 7 can rotate in the same direction. After the clockwise rotation, when the counterclockwise force of FIG. It is engaged with the pawl teeth 5 and is prevented from rotating in the same direction.

Next, an example of a method of attaching the variable resistor 17 to the chassis 14 will be described. First, as described above, the stopper body 7 is fitted to the bearing 1 and the variable resistor 17 is inserted into the shaft insertion hole 12 of the bearing 1. After inserting the shaft 19 of the resistor 17, the substrate 2 of the bearing 1 is attached to the front surface of the variable resistor 17. Next, as shown in FIG. 11, the stopper 7 is inserted into the mounting hole 15 of the chassis 14 having a different shape, and at the same time, the rotation stopper 6 provided on the base plate 2 of the bearing 1 is projected outward from the hole 16 of the chassis 14. After tightening, the stopper 7 may be rotated clockwise until the ear piece 9 is locked by the rotation stopper 6.

By doing so, as described above, the stopper body 7 is locked by the rotation stop in the clockwise direction, and the pawl 13 is locked by the pawl teeth 5 in the counterclockwise direction. , It cannot rotate in any counterclockwise direction, the stopper 7 is attached to the bearing 1 without looseness, and the chassis 14 is clamped between the bearing 1 and the ear piece 9, so that the variable resistor is securely attached to the chassis 14. Fixed to.

According to this embodiment, after stopping the step of screwing the nut onto the screw of the conventional bearing and inserting the bearing 1 fitted with the stopper body 7 into the mounting hole 15 of the chassis 14 having a different shape, Since the ear piece 9 of the stopper 7 can be mounted on the chassis 14 by one-touch rotation, the mounting time can be shortened as compared with the conventional case.

Also, the pawl teeth 5 are provided on the outer peripheral surface of the cylindrical portion 8 of the bearing 1, and the pawls 13 that mesh with the pawl teeth 5 are provided on the stopper body 7, and the stopper body 7 is fitted to the bearing 1. When the stopper 7 is rotated clockwise until the ear piece 8 is locked by the rotation stopper 6, the stopper 7 does not rotate in either the clockwise or counterclockwise direction. Is loosely fitted into the bearing 1, and the variable resistor 17 is securely fixed to the chassis 14 via the bearing 1 and the stopper 7.

Furthermore, if the rotation stopper 6 of the bearing 1 is made to project from the hole 16 of the chassis 14 and positioned on the rotation locus of the ear piece 9 of the stop plate 7, the rotation stopper 6 is stopped by the stopper body 7. It also has a function.

[0016]

[Effect of the device]

 According to the first aspect of the present invention, since the electric component can be attached to the chassis with one touch, the attaching time can be shortened as compared with the conventional case.

According to the second aspect, when the electric component is attached to the chassis by the rotation of the stopper, the stopper cannot rotate in any direction and does not loosen. Therefore, the chassis of the electric component It is securely attached to.

Further, according to the third aspect, it is possible to provide the rotation stopper of the bearing with a stopper function when rotating the stopper body.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which an electric component of the present invention is attached to a chassis.

FIG. 2 is a right side view of the electric component of the present invention attached to a chassis.

FIG. 3 is a front view of the bearing of the present invention.

FIG. 4 is a right side view of the bearing of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a front view of a stopper according to the present invention.

8 is a cross-sectional view taken along the line CC of FIG.

FIG. 9 is a rear view of the stopper according to the present invention.

FIG. 10 is an exploded perspective view of the bearing of the present invention before fitting a stopper.

FIG. 11 is an explanatory view showing a meshing state of the pawl teeth of the bearing and the pawls of the stopper when the bearing of the present invention is attached to the chassis.

12 is a cross-sectional view taken along the line DD of FIG.

FIG. 13 is a front view showing a conventional attachment structure of an electric component to a chassis.

[Explanation of symbols]

 1 Bearing 7 Stopper 9 Ear Piece 14 Chassis 15 Mounting Hole 17 Variable Resistor (Electrical Parts)

Claims (3)

[Scope of utility model registration request] 1. A bearing of an electric component is rotatably provided with a stopper having an ear piece projecting outward, and a chassis is provided with a mounting hole of a different shape into which the stopper can be inserted. A structure for mounting an electric component, characterized in that a chassis is sandwiched between a stopper and the bearing by rotating the body. 2. A mounting structure for an electric component according to claim 1, wherein the outer peripheral surface of the cylindrical portion of the bearing is provided with pawl teeth, and the stopper is provided with pawls which mesh with the pawl teeth. 3. A positioning projection for an electric component is provided, a hole for locking the projection is provided in the chassis, the projection is provided outside the chassis through the hole, and the projection is provided on an ear piece of the stopper body. The mounting structure for an electric component according to claim 1, wherein the mounting structure is located on a rotation locus.