JPH0676694A - Switch - Google Patents

Abstract

PURPOSE:To prevent the backlash a control knob by use of one kind of component which can be manufactured at low cost and be easily assembled by assembling the control knob with a rubber piece intervening between a shaft and a mating hole. CONSTITUTION:A rubber piece 27 for eliminating a backlash caused between a control knob 2, 3 and a shaft 7f when they are fitted with each other is mounted at an end of the shaft 7f. The rubber piece 27 is in the form of a hollow dome and has in its lower surface a connecting hole 28 which is fitted over the end of the shaft 7f. A pair of ventilating holes 29 which communicates the connecting hole 28 to the outside is formed and when the control knob 2, 3 is mounted on the shaft 7f, the rubber piece 27 is pressed into contact with the upper portion of the inner surface at a fitting hole 1722, 23 and deformed and the backlash is localized by the resilient restoring force of the rubber piece 27 so as to prevent uncontrolled rolling of the control knob 2, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device used for position control of an electric seat in an automobile or the like,
Particularly, the shaft body is erected on the slider interlockingly connected to the actuator of the switch body, and the shaft body is inserted and connected to the fitting hole formed in the operation knob to operate in the direction orthogonal to the shaft body axial direction. The present invention relates to a switch device configured to slide a slider by displacing a knob.

[0002]

2. Description of the Related Art In the above switch device, a slight amount of backlash is often generated in the fitting connection portion between the shaft body and the operating knob, and the operating knob may sway freely due to external vibration. In order to solve such a problem, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-134256, a press-connector and a compression spring are used to connect a fitting portion of a shaft and an operation knob. Means for controlling backlash have been proposed.

[0003]

However, in the above-mentioned conventional means, two kinds of parts are required to control the backlash, which contributes to the cost increase, and the assembly of these parts requires labor and production. It was a cause of hindering the improvement of sex.

The present invention has been made paying attention to such a point, and it is possible to prevent the operation knob from rattling by using one kind of parts which can be manufactured at low cost and can be easily assembled. The purpose is to do so.

[0005]

In order to achieve the above object, the present invention has the following constitution.

That is, according to the present invention, the shaft is erected on the slider interlockingly connected to the actuator of the switch body, and the shaft is fitted and connected in the fitting hole formed in the operation knob so that the axial direction of the shaft is adjusted. In a switch device configured to slide a slider by displacing an operation knob in a direction orthogonal to each other, a rubber piece is mounted in a gap between a tip end of the shaft body and a fitting hole formed in the operation knob.

[0007]

According to the structure of the present invention, the rubber piece is elastically deformed by externally mounting the operation knob on the shaft body with the rubber piece interposed in the gap between the shaft body and the fitting hole formed in the operation knob. Then, the elastic restoring force causes the play between the shaft body and the fitting hole to be offset,
The voluntary shaking motion of the control knob is prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to a switch device used for position control of an electric seat in an automobile will be described below with reference to the drawings.

This switch device, as shown in FIG.
An operation knob 2 for adjusting the angle of the seat back is provided on the upper surface of the horizontally long case 1, and an operation knob 3 for adjusting the seat height, the front-back position, and the vertical angle of the seat seat. Is configured.

A printed circuit board 4 is screwed in the case 1 together with a cover case 5, and a switch body S1 operated by the operation knob 2 and the operation are provided on the upper surface of the printed circuit board 4. Three switch bodies S2, S3, S4 operated by the knob 3 are mounted. The switch bodies S1, S2, S3, S4 are of the same specifications and equipped with an actuator 6 that slides along the upper surface thereof.
And S3 actuator 6 can slide left and right,
Also, the actuator 6 of the switch bodies S2 and S4
Is installed so as to be slidable back and forth, and operation knobs 2 and 3 corresponding to each actuator 6 are interlockingly connected via a slider 7.

The slider 7 comprises an internal slider 7a which is mounted inside the case 1 and engages with a protrusion 6a on the upper surface of the actuator 6, and an external slider 7b which is mounted outside the case 1. A pair of connecting legs 7c that are continuously provided are inserted into the case 1 through a pair of elongated hole-like operation holes 8 formed in the case 1, and the connecting legs 7c are inserted.
By engaging the engaging claw 7e formed in the internal slider 7a with the connecting hole 7d formed in c, the internal slider 7a and the external slider 7b are connected, and the entire slider 7 is operated in the operation hole 8d.
Further, it can be slidably mounted on the case 1 along the guide rail 9 on the upper surface of the case 1.

On the upper surface of the external slider 7b, the shaft 7
f is erected, and a ball 11 assembled from below in the shaft body 7f and urged downward by a spring 10 forms a V-shaped recess formed on the upper surface of the case 1 between the pair of operation holes 8. The slider 7 is biased by the insertion cam 12 and is returned and biased to the middle (neutral position) of the operation range by the biasing engagement action of the ball 11 to the recessed cam 12.

On the upper surface of the case 1, there is one round shaft guide pin 13 for supporting the operation knob 2 so that the operation knob 2 can swing to the left and right, and two for supporting the operation knob 3 so that the operation knob 3 can move straight in the left and right directions and can swing back and forth. The square shaft guide pins 14 and 15 are erected,
The assembly structure of the operation knobs 2 and 3 to the guide pins 13, 14 and 15 and the interlocking structure of the operation knobs 2 and 3 and the sliders 7 will be described below.

A round shaft guide pin 13 is provided on the lower surface of the operation knob 2.
A support hole 16 externally fitted to the shaft 7 and a long fitting hole 17 before and after being fitted to the shaft body 7f of the slider 7 are formed, and the operation knob 2 is swung left and right around the shaft center P1 of the round shaft guide pin 13. By the dynamic operation, the slider 7 connected to the shaft body 7f through the fitting hole 17 slides left and right, and the actuator 6 of the switch body S1 slides left and right. The annular protrusion 18 formed on the outer periphery of the shaft body 7f and the annular protrusion 19 formed on the outer periphery of the round shaft guide pin 13 are press-fitted into the grooves formed in the fitting hole 17 and the support hole 16 to operate the operation knob. 2 is supported so as not to come off.

On the lower surface of the operation knob 3, the square shaft guide pin 1 is provided.
Cross-shaped guide grooves 20 and 21 allowing relative movement of the front and rear parts 4 and 15 to the left and right, and the shaft body 7 of the left and right sliders 7 that move back and forth.
The left and right long fitting holes 22 and 23 fitted into the f, and the long fitting holes 24 before and after being fitted into the shaft body 7f of the center slider 7 that moves left and right are formed. , 15 and the guide grooves 20, 21 linearly operate the entire operation knob 3 left and right, so that only the actuator 6 of the central switch body S2 is slid left and right, and the operation knob 3 is moved to the right end shaft body 7f. By swinging back and forth about the axis P2 of the switch, the slider 7 at the left end slides back and forth, and only the actuator 6 of the switch body S3 slides back and forth.
By swinging the operating knob 3 back and forth around the axis P3 of the shaft body 7f at the left end, only the actuator 6 of the switch body S4 at the right end is slid back and forth. The annular projection 25 formed on the outer periphery of each shaft 7f
As described above, the operation knob 3 is prevented from coming off. Further, the case 1 is fitted with a dustproof cover 26 made of rubber, which is fitted to the bases of the shafts 7f and the square shaft guide pins 14 and 15 so as to be externally fitted.

A rubber piece 27 is attached to the tip of the shaft 7f to absorb the looseness of fitting between the operation knobs 2 and 3 and the shaft 7f. As shown in FIGS. 7 and 8, the rubber piece 27 is formed in a hollow dome shape, and the shaft body 7f is provided on the lower surface thereof.
A connection hole 28 that is fitted on the tip of the connection hole 28 is formed, and a pair of vent holes 29 that connect the connection hole 28 and the outside are formed, and the operation knobs 2 and 3 are attached to the shaft body 7f. Then, the rubber piece 27 is pressed into contact with the upper portions of the inner surfaces of the fitting holes 17, 22 and 23 to be deformed, and the elastic backing force of the rubber piece 27 causes the fitting backlash to shift to one side, so that the operation knobs 2 and 3 freely swing. It is being blocked. In the embodiment, the rubber pieces 27 are attached to the two shaft bodies 7f at both ends to prevent the operation knob 3 from swinging, but it is possible to attach the rubber pieces 27 to only one central shaft body 7f. There is a steadying effect of the operation knob 3.

Further, the rubber piece 27 is shown in FIG.
As shown in (b), it is formed into a solid shape or a cylindrical shape,
By swelling and deforming in the outward direction by pressure contact with the inner surface of the fitting hole, the deformed rubber piece 27 is brought into contact with the inner surface of the fitting hole at many places, and the fitting backlash is more effectively achieved. Can be absorbed.

[0018]

According to the present invention, it is possible to easily prevent the operation knob from freely swinging by simply assembling the operation knob with the rubber piece interposed between the shaft body and the fitting hole. Since the piece can be manufactured at low cost, it can be implemented with little cost increase.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of the entire switch device.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a perspective view of the entire switch device.

FIG. 5 is an exploded perspective view of a part of the switch device.

FIG. 6 is an exploded perspective view of a part of the switch device.

FIG. 7 is a perspective view of a shaft and a rubber piece attached to the shaft.

FIG. 8 is a vertical sectional view of a rubber piece.

FIG. 9 is a vertical cross-sectional view showing a fitting connection portion of an operation knob.

FIG. 10 is a vertical sectional view showing another embodiment of the rubber piece.

[Explanation of symbols]

 1 Case 2 Operation Knob 3 Operation Knob 6 Actuator 7 Slider 7a Internal Slider 7b External Slider 7f Shaft 8 Operation Hole 17 Fitting Hole 22 Fitting Hole 23 Fitting Hole 27 Rubber Piece 28 Connecting Hole 29 Vent Hole S1 Switch Main Body S2 Switch Main body S3 switch main body S4 switch main body

Claims (3)

[Claims] 1. A shaft body is erected on a slider interlockingly connected to an actuator of a switch body, and the shaft body is fitted and connected to a fitting hole formed in an operation knob, in a direction orthogonal to a shaft body axial direction. A switch device configured to slide a slider by displacing the operation knob, wherein a rubber piece is mounted in a gap between a tip of the shaft body and a fitting hole formed in the operation knob. Switch device to do. 2. The switch device according to claim 1, wherein the rubber piece is a cap-shaped member that is attached to the tip of the shaft body. 3. The switch device according to claim 2, wherein a ventilation hole is formed in the rubber piece.