JP2000251573A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items and facilitate the assembling process by providing a cam part on the lower surface of a slider or rotating knob, and bringing the cam part into contact with a rubber key top by the sliding operation of the slider or the rotating operation of the rotating knob to press down the rubber key top, thereby turning on a switch circuit. SOLUTION: An obtuse-angled wedge-shaped cam part 15b having inclined surfaces on both rotating directional longitudinal sides is formed on the lower end surface of an arm 15a. Since the arm 15a and the cam part 15b are displaced from the rotating center of a lower rotating knob 15, the cam part 15b is rotated to the left position when the lower rotating knob 15 is fully rotated to the left, and rotated to the right position when it is fully rotated to the right. When the lower rotating knob 15 is fully rotated to the left or right, a left or right spherical key top 18 is pressed down by the cam part 15b, and a carbon contact 18a formed on the lower surface of a spherical key top 18 makes contact with a pair of switch electrodes on a switch circuit board 16, whereby a switch is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device, and more particularly to a rotary or slide switch device using a rubber switch.

[0002]

2. Description of the Related Art
A non-locking type switch device operated by a slider or a rotary knob is a push switch 1 shown in FIG.
Alternatively, the flat switch 2 shown in FIG. 10 is used, and the slider 3 is operated to slide or the rotary knob is rotated to turn the switches 1 and 2 on and off.

[0003] Problems with the above switch device include the large number of components such as a push switch and a flat switch, and the need for mounting the switch on a substrate. Therefore, there arises a technical problem to be solved in order to reduce the number of parts and to provide a switch device with an easy assembling process, and an object of the present invention is to solve the above problem.

[0004]

SUMMARY OF THE INVENTION The present invention proposes to achieve the above-mentioned object, and a slider or a board which slides in parallel with a board surface above a switch circuit board on which a rubber key top is mounted. A rotary knob whose axis is perpendicular to the surface is arranged, a cam is provided on the lower surface of the slider or the rotary knob, and the slider is slid or the rotary knob is rotated, so that the cam contacts the rubber key top and the rubber An object of the present invention is to provide a switch device configured so that a key top is pressed down to turn on a switch circuit.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a switch device 11 used as a remote controller of a car audio system, a car navigation system, or the like. A switch housing is constituted by a bottom case 12 and an upper case 13 attached to the upper surface thereof. Upper and lower rotating knobs 14 and 15 are arranged. The ring-shaped lower rotary knob 15 is fitted on the outer periphery of a hollow shaft portion 13 a formed at the center of the upper surface of the upper case 13.
Is inserted into the hollow shaft portion 13a of the upper case 13.

Although not shown, a push key shaft is inserted into the hollow shaft 14a of the upper rotary knob 14, and the push key exposed at the center of the upper surface of the upper rotary knob 14 is depressed. Is configured to turn on a push switch (not shown) arranged at the center of the. The lower portion of the shaft 14a of the upper rotary knob 14 is configured to be connected to a rotary plate of a rotary encoder or to connect an arm to turn on / off a push switch, for example, to perform volume control of car audio. Further, a plurality of push keys are arranged on the outer peripheral surface of the upper case 13 so that various switch operations can be performed.

FIG. 2 is a cross-sectional view in which the upper rotary knob 14 shown in FIG. 1 is removed, and the lower rotary knob 15 is formed with an arm 15a extending downward from the depth in the drawing. On the top surface of the upper case 13, an arc-shaped slot 13b centered on the hollow shaft portion 13a is formed in the back of the paper, and the arm 15a of the lower rotary knob 15 is formed by the slot 13b.
Into the upper case 13 through the lower rotary knob 1
5 can be rotated left and right about 18 degrees from the neutral position.

An obtuse wedge-shaped cam portion 15b is formed on the lower end surface of the arm 15a, and the front and rear sides of the arm 15a are inclined surfaces. When the lower rotary knob 15 is fully rotated to the left, the cam portion 15b is rotated to the left position indicated by a dashed line in the figure, and when fully rotated to the right, the cam portion 15b is moved to the right position indicated by a dashed line. To rotate.

A rubber sheet 17 is mounted on the upper surface of the switch circuit board 16 on the bottom case 12, and two spherical key tops 18 formed on the rubber sheet 17 are located at the left and right ends of the rotation range of the cam 15b. are doing. Like the general rubber switch, a carbon contact is formed on the lower surface of the spherical key top 18, and when the lower rotary knob 15 is fully rotated left or right, the left or right spherical key top 18 is rotated by the cam portion 15b. Is pressed down, and the carbon contacts come into contact with the pair of switch electrodes on the switch circuit board 16 to be turned on.

When the cam portion 15b moves horizontally on the substrate surface and is pushed in the horizontal direction, the front portion of the spherical key top 18 descends with the rear skirt portion as a fulcrum. By making the carbon contact surface on the lower surface upwardly inclined, the carbon contact surface is evenly contacted with the switch electrode in a substantially horizontal state when pushed by the cam portion 15b. stable.

As shown in FIG. 2 and FIG.
At the front of the upper surface, an arc-shaped wall portion 19 centered on the axis of the hollow shaft portion 13a is vertically set up. A vertical plate portion 20 is formed on the front inner peripheral surface of the lower rotary knob 15, and a vertical rib 20 a is provided at the left and right center of the rear surface (right in FIG. 2) of the vertical plate portion 20. The click mechanism is constituted by contacting the outer peripheral surface of the wall portion 19.

A groove 19a is formed at the left and right sides of the outer peripheral surface of the wall portion 19 at positions of 18 degrees and 18 degrees to form a mating pair with the rib 20a of the lower rotary knob 15. When rotated 18 degrees to the left or right, the left or right spherical key top 18 is pressed down to switch on, and the rib 20 a of the lower rotary knob 15 is engaged with the groove 19 a of the wall 19 of the upper case 13. Then, a clear click is transmitted to the operator's hand.

The lower rotary knob 15 is biased to a neutral position by a torsion coil spring 21 interposed between the upper case 13 and the lower rotary knob 15, and when the rotation operation is released, the rib 20a is raised. The lower rotation knob 15 returns to the neutral position after coming off the groove 19a of the wall 19 of the case 13.

FIG. 4 shows an embodiment of a slide switch device, in which a cam portion 22a of an inclined surface rising forward (to the left in the figure) is provided on the lower surface of a slider 22 connected to a slide knob (not shown). Are formed. The configuration of the rubber switch is the same as that of the switch device shown in FIGS. 1 and 2. When the slide knob is slid forward, the spherical key top 18 is pushed down from behind by the cam portion 22a of the slider 22, and descends. The carbon contact 18a on the lower surface of the switch 18 contacts a switch electrode of a switch circuit board (not shown) to be turned on.

5 to 8 show modifications of the shape of the rubber key top. FIG. 5 shows an elliptical key top 23, and an elliptical key top 24 shown in FIG. Like the cam portion 22a, it has an inclined surface that rises forward. FIG. 7 shows a double bubble type key top 25 in which two spherical surfaces are joined, and FIG. 8 shows a key top 26 having a triangular side shape.
8 has the same function as that of FIG.

The present invention is not limited to the above-described embodiment, and various portions other than the key top can be variously modified within the technical scope of the present invention. Of course.

[0017]

As described above, the switch device of the present invention is configured so that the rubber key switch is turned on / off by the slider or the rotary knob. Therefore, the conventional switch using a push button type push switch or the like is used. The configuration is simpler than that of the device, and the effects of reducing the number of parts, reducing the size, and facilitating assembly are achieved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a rotary switch device.

FIG. 2 is a cross-sectional view of the rotary switch device with an upper rotary knob removed.

FIG. 3 is a sectional view showing a click mechanism of a lower rotary knob.

FIG. 4 is a diagram illustrating the configuration of a slide switch device;
(A) is a plan view, (b) is a front view, and (c) is a side view.

5A and 5B are configuration explanatory diagrams showing another embodiment of the slide switch device, wherein FIG. 5A is a plan view, FIG. 5B is a front view,
(C) is a side view.

6A and 6B are configuration explanatory diagrams showing another embodiment of the slide switch device, wherein FIG. 6A is a plan view, FIG. 6B is a front view,
(C) is a side view.

FIGS. 7A and 7B are configuration explanatory views showing another embodiment of the slide switch device, wherein FIG. 7A is a plan view, FIG.
(C) is a side view.

8A and 8B are configuration explanatory diagrams showing another embodiment of the slide switch device, wherein FIG. 8A is a plan view, FIG. 8B is a front view,
(C) is a side view.

FIG. 9 is a configuration explanatory view of a conventional switch device.

FIG. 10 is a diagram illustrating the configuration of a conventional switch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Rotary switch device 12 Bottom case 13 Upper case 14 Upper rotation knob 15 Lower rotation knob 15a Arm 15b Cam part 16 Switch circuit board 17 Rubber sheet 18 Spherical key top 18a Carbon contact 19 Wall part 19a Groove 20 Vertical plate part 20a Rib 22 Slider 22a Cam section

Claims (2)

[Claims] 1. A slider which slides in parallel with a board surface or a rotation knob whose axis is perpendicular to the board surface is disposed above a switch circuit board on which a rubber key top is mounted, and a slider or a rotation knob is provided on the lower surface of the slider or the rotation knob. A switch device comprising a cam portion, a slider being operated to slide or a rotary knob to be rotated, whereby the cam portion is brought into contact with the rubber keytop and depresses the rubber keytop, thereby turning on the switch circuit. 2. A contact surface on a lower surface of the rubber key top is an inclined surface which rises forward in a sliding direction of a slider or a rotating direction of a rotary knob, and the rubber key top is pushed down by a cam portion of the slider or the rotary knob. 2. The switch circuit board according to claim 1, wherein the contact surface contacts the switch circuit board when the contact surface is parallel to the upper surface of the switch circuit board.
The switch device according to any one of the preceding claims.