JPH0615225U - Switch knob - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a switch knob with good workability, which replaces the spring fixation by the E sleeve. [Structure] Molded integrally with a switch knob made of synthetic resin material, when pressure is applied from the outside, it sinks into a void inside the knob and elastic claws project from the knob when the pressure is removed,
Bind one end of the coil spring. [Effect] The troublesome work of inserting the E-sleeve and the parts are reduced, and the efficiency of the assembling work is significantly improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a push button type switch knob.

[0002]

[Prior art]

 When installing the push button type switch knob in the instrument panel case, as shown in FIG. 5, first insert the switch knob 2 from the lower side of the case 1, fit the coil spring 3 from the head of the knob, and then place it on the spring 3. The E-sleeve 7 was fitted and fixed to the knob 2 so that the knob 2 did not fall into the case.

[0003]

[Problems to be solved by the device]

 However, in such a conventional switch knob, when inserting the E-sleeve into the knob, the E-sleeve has to be fixed to the knob while pushing down the spring a little, so that workability is poor and a tool is required.

Further, when the mounting position of the switch knob is close to the rising wall surface of the case or the wall is higher than the position where the E-sleeve is inserted, it is difficult to mount with a normal tool, so a dedicated tool is prepared. There was a problem.

In order to solve such a problem, the present invention intends to provide a switch knob with good workability, which replaces the spring fixation by a troublesome E-sleeve.

[0006]

[Means for Solving the Problems]

 The above problem is that the switch knob is molded of synthetic resin, is molded integrally with the knob, and when pressure is applied from the outside, it sinks into a void inside the knob, and when the pressure is removed, the knob protrudes from the knob. This is solved by a switch knob in which one end of the return coil spring is restrained.

[0007]

[Action]

 A switch knob made of a synthetic resin material has a claw that can be swung due to the elasticity of the material integrally molded with a knob in a space provided at a predetermined position in the longitudinal direction. When the return coil spring is fitted from the head, the claw flexes and sinks into the void, and when the pressure from the outside is removed, the elastic force of the material restores it and the claw protrudes from the outer surface of the knob. Since the protruding size of the claw from the outer surface of the knob is larger than the outer diameter of the coil spring, the coil spring is constrained in the longitudinal direction by the claw.

[0008]

【Example】

 The present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of the present invention, in which a switch knob 2 made of a synthetic resin material is provided with a cavity 4 at a predetermined position in the longitudinal direction, and when pushed from the outside, the elasticity of the resin material is The claw 5 is formed integrally with the knob 2 by bending the knob head side into a fulcrum and retracting it into the void 4.

When the switch knob 2 is inserted from the lower side of the case 1, the claw 5 sinks into the void 4 when the opening of the case 1 passes through, and projects after passing. Even when the coil spring 3 is fitted into the head of the knob 2, the coil spring 3 sinks while passing through the spring and projects after passing through. Since the protruding size of the tip of the claw 5 at the time of protrusion is formed to be larger than the outer diameter of the coil spring 3, the spring 3 is restrained at the position of the claw 5 without coming out toward the knob head. Of course, the switch knob 2 does not fall into the case 1.

3 and 4 show a second embodiment of the present invention, in which a pair of the claws 5 described in the first embodiment are formed at diametrically opposite positions of the switch knob 2. Since the pair of knobs receive the reaction force of the coil spring evenly by the claws 5 and 5 protruding on both sides, the feel when the switch is pushed becomes good.

[0012]

EFFECTS OF THE INVENTION According to the present invention, the coil spring for returning the switch knob can be fixed only by the elastic claws formed inside the knob. This eliminates the need for such parts, and can significantly improve the efficiency of assembly work.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

2 is an explanatory side view of FIG.

FIG. 3 is a front view showing a second embodiment of the present invention.

FIG. 4 is a side view of FIG.

FIG. 5 is an explanatory diagram of a conventional switch knob.

[Explanation of symbols]

 1 case 2 switch knob 3 coil spring 4 void 5 claw 7 E-sleeve

Claims (3)

[Scope of utility model registration request] 1. A switch knob, which is reciprocally supported by a contact via a coil spring, is molded of synthetic resin, is molded integrally with the switch knob, and is externally pressured. A switch knob, wherein one end of the coil spring is restrained by a claw protruding from the knob when the sink pressure in the void is removed. 2. The switch knob according to claim 1, wherein one claw is provided on the switch knob. 3. The switch knob according to claim 1, wherein a pair of claws are provided at positions facing each other in the diametrical direction of the switch knob.