JPH09190741A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance waterproofness of a switch part inside a switch case. SOLUTION: A switch case 17 comprising a combination of an insulator 11 and a body 14 is held closed except at support holes 12, 15 via which both of the arm parts 26 of an operation transmitting member 24 are rotatably supported. Outside the switch case 17, both of fitting recesses 33 in an operating member 32 are fitted over the connecting parts 27 of the operation transmitting member 25 so that as the operating member 32 is rocked, first and second changeover switches 22, 23 are operated via the operation transmitting member 24 and a pusher 31. Thus even if the portion of the switch case 17 is splashed with water, entrance of water into the switch case 17 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device having a structure for improving waterproofness of a switch part.

[0002]

FIG. 6 shows an example of a conventional switch device. This switch device has the following configuration. Switch case 1 is an insulator 1
It is configured by combining a and the body 1b. In this case, the insulator 1a is provided with first and second fixed contacts 2a and 2b as left and right in the figure as fixed contacts, and a common fixed contact 2c is provided at an intermediate portion between these. There is. The movable contact 3 is disposed on the common fixed contact 2c so as to be rotatable around the upper end of the rising portion of the common fixed contact 2c as a fulcrum. These first
And the second fixed contacts 2a and 2b, and the common fixed contact 2
The c and the movable contact 3 form a first changeover switch 4.

An insertion hole 5 having an open upper surface is formed in the upper portion of the body 1b, and the operation knob 6 is inserted into the insertion hole 5.
Is inserted from above. The operation knob 6 is rotatably supported by the body 1b with the shaft portion 6a as a fulcrum, and
The cylindrical portion 6b inserted into the insertion hole 5 is integrally provided. A compression coil spring 7a and a pusher 7b are housed in the tubular portion 6b, and the lower end of the pusher 7b is in a state of pressing the upper surface of the movable contact 3.

In the above structure, when the operation knob 6 is in the neutral position shown by the solid line, the movable contact 3 is inclined downward to the right in the figure, and the movable contact 3 is on the right side of the common fixed contact 2c. It is in contact with the first fixed contact 2a. From this state, the operation knob 6 is moved to the arrow A in the figure.
When the pusher 7b is rotated in the direction, the pusher 7b slides along the upper surface of the movable contact 3 in the arrow B direction. At this time, the movable contact 3 remains in the state of descending to the right until the push point of the pusher 7b reaches a predetermined point (dead point), but when the dead point is crossed in the direction of the arrow B, the movable contact 3 is moved. As shown by the alternate long and two short dashes line, it switches to an inclined state of descending to the left. In this state,
The movable contact 3 is in contact with the common fixed contact 2c and the left second fixed contact 2b.

On the other hand, when the operating knob 6 is rotated in the direction opposite to the arrow A in the figure from the state where the operating knob 6 is in the neutral position (state of the solid line), the pusher 7b causes the movable contact 3 to move. Although it slides in the direction of arrow C along the upper surface of the movable contact 3, the movable contact 3 does not change and remains in the inclined state of descending to the right. And
When the rotational operation force on the operation knob 6 is released, the pusher 7b slides along the movable contact 3 toward the original position, and the operation knob 6 is automatically returned to the neutral position.

Although not shown, a second changeover switch having the same structure as the first changeover switch 4 is provided in the switch case 1 side by side with the first changeover switch 4. The movable contacts of the second changeover switch are arranged symmetrically with respect to the movable contact 3 of the first changeover switch 4.

By the way, in the switch device having such a structure, since the body 1b has the through hole 5 having an open upper surface, the water passes from the through hole 5 to the switch case as shown by an arrow D in FIG. Water in the first place
It is possible that the changeover switch 4 and the second changeover switch portion (not shown) may be reached.

Therefore, an object of the present invention is to provide a switch device capable of improving the waterproof property of the switch portion in the switch case.

[0009]

In order to achieve the above-mentioned object, a switch device of the present invention is constructed by combining a base member and a cover member, and has supporting holes on both side parts facing each other, and supporting the same. It is composed of a switch case which is substantially sealed except for holes, a fixed contact provided on the base member, and a movable contact arranged in the switch case so as to come into contact with and separate from the fixed contact. A switch and an arm portion disposed inside the switch case and rotatably supported by being inserted into the support hole on both sides, and each arm portion protruding from the support hole to the outside of the switch case. And an operation transmitting member having a connecting portion at the tip end thereof, and a switch provided on the operation transmitting member in the switch case for operating the switch in accordance with the rotation of the operation transmitting member. A switch actuating member and a connecting member that is connected to the connecting member outside the switch case on both sides, and an operating member that rotates the operation transmitting member when a swing operation is performed. It is characterized by having a configuration.

In the case of this structure, when the operating member is rocked, the operation transmitting member is rotated, and the switch is operated via the switch operating member in accordance with this rotation.

According to this structure, the switch case is substantially sealed except that the support holes through which the arm portions of the operation transmission member are inserted are located on opposite sides, and the switch case is inserted from the upper side. It is possible to prevent water from entering the case as much as possible.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, an insulator 11 as a base member is in the shape of a rectangular container having an open upper surface, and U-shaped support holes 12 having open upper ends are formed on opposite side portions thereof. Engagement protrusions 13 (see FIG. 3) are provided on the outer surfaces of the opposite side portions other than the support holes 12 formed.
The body 14 as a cover member is in the shape of a rectangular container having an open lower surface, and U-shaped support holes 15 having open lower ends are formed on both opposing sides, and the support holes 15 are formed. Engagement holes 16 on opposite sides other than
(See FIG. 3) are formed.

The body 11 is attached to the insulator 11.
So as to cover each engaging hole 16 with the engaging convex portion 1
By engaging with 3, the box-shaped switch case 17
Are configured (see FIG. 2). This switch case 1
Reference numeral 7 indicates a hermetically sealed state except for a portion where the support hole 12 of the insulator 11 and the support hole 15 of the body 14 overlap.

In this case, the first and second fixed contact groups 18 and 19 are provided side by side on the inner bottom surface of the insulator 11. As shown in FIGS. 1 and 3, the first fixed contact group 18 includes first and second fixed contacts 18a, 18a disposed on the left and right as fixed contacts, respectively.
18b and a common fixed contact 1 arranged in the middle of these
And 8c. In addition, the second fixed contact group 1
Reference numeral 9 denotes the first and second fixed contacts 1 arranged on the left and right, respectively, as the fixed contacts, similarly to the first fixed contact group 18.
9a and 19b, and a common fixed contact 19c arranged in the middle between them.

On each of the common fixed contacts 18c and 19c,
The first and second movable contacts 20 and 21 are swingably arranged. Here, the first fixed contact group 18 and the first movable contact 20 constitute a first changeover switch 22 as a switch, and the second fixed contact group 1
The 9 and the second movable contact 21 form a second changeover switch 23 as a switch. In this case, the 1st movable contact 20 and the 2nd movable contact 21 are arrange | positioned in the left-right reverse direction.

The operation transmitting member 24 has two cylindrical portions 25 whose lower surfaces are open at the center corresponding to the first and second movable contacts 19 and 20, and has a columnar shape on both left and right sides. It has an egg-shaped arm portion 26, and further each arm portion 2
The tip end of 6 has a square columnar connecting portion 27. Each arm portion 26 is provided with a disk portion 28.

In the operation transmitting member 24, the tubular portion 25 is arranged inside the switch case 17,
The arm portions 26 on both sides are provided with the support holes 12 of the switch case 17.
It is rotatably supported in a state where it is inserted in and 15, and each connecting portion 27 portion projects outward from the switch case 17 (see FIG. 4). Here, the disc portion 28 of each arm portion 26 corresponds to the outer surface of the insulator 11 and the body 1.
4 is arranged between the inner surface and the inner surface. On the inner side surface of the body 14, a recess 29 is formed in the peripheral edge of the support hole 15 to allow the disk portion 28 to escape.

In the switch case 17, a compression coil spring 30 and a pusher 31 as a switch operating member urged downward by the compression coil spring 30 are housed in both cylindrical portions 25 of the operation transmission member 24. And the lower end portion of each pusher 31 has the first and second movable contacts 20, 2
1 is pressed from above.

The operating member 32 is formed in a U shape so as to straddle the body 14 from above, has fitting recessed portions 33 as connected portions at the lower portions of both side portions, and has a protruding portion 32 at the upper portion.
a is integrated. Then, the operation member 32
The two fitting recesses 33 to the connecting portion 2 of the operation transmitting member 24.
By being fitted to the switch case 17, the switch case 17 is swingably provided via the operation transmission member 24.

The switch unit 34 having the above structure is assembled as follows. First, the insulator 11
The first and second movable contacts 20 and 21 are arranged at predetermined positions inside. Next, in a state where the compression coil spring 30 and the pusher 31 are housed in both the tubular portions 25 of the operation transmission member 24, the both arm portions 26 are inserted into the support holes 12 of the insulator 11 from above. At this time, the disk portion 28 of each arm portion 26
Is located outside the insulator 11, and each pusher 31 is brought into contact with the first and second movable contacts 20 and 21 from above.

The body 14 is connected to the insulator 11
And the engagement holes 16 are engaged with the engagement protrusions 13 of the insulator 11. At this time, the support holes 15 of the body 14 are fitted into the arm portions 26 of the operation transmission member 24 from above, and the disk portions 28 are arranged in the recesses 29 of the body 14. Then, the fitting recesses 33 of the operating member 32 are fitted to the connecting portions 27 protruding from the switch case 17. As a result, the switch unit 34 as shown in FIG. 2 is assembled.

The switch unit 3 thus constructed
4 is a switch panel 35 as shown in FIGS. 3 and 4.
Is disposed below. In the switch panel 35, an insertion hole 36 is provided at a portion corresponding to above the convex portion 32a of the operation member 32.
Is formed, and an operation knob 37 is provided so as to be rotatable around a shaft portion 38 as a fulcrum. Two leg portions 39, which are inserted from above into the insertion holes 36, are provided on the operation knob 37 so as to protrude downward, and between the leg portions 39, the operation member 3 is provided.
Two convex portions 32a are inserted.

Next, the operation of the above configuration will be described. In this case, the operations of the first changeover switch 22 and the second changeover switch 23 are the same except that they are bilaterally symmetrical, so that the first changeover switch 22 side will be mainly described.

When the operation knob 37 and the operation member 32 are located at the neutral position shown in FIGS. 3 and 4, the first movable contact 20 of the first changeover switch 22 is at the right side as shown in FIG. The first movable contact 20 is inclined downward and the first movable contact 20 and the first fixed contact 18c on the right side
Of the fixed contact 18a. At this time, although not shown, the second movable contact 21 in the second changeover switch 23 is in a state of being inclined downward to the left, contrary to the first movable contact 20, and the second movable contact 21 The contact 21 is in contact with the common fixed contact 19c and the left first fixed contact 19a.

From this state, when the operation knob 37 is rotated in the direction of arrow E in FIG. 3, the operation member 32 via the leg 39 of the operation member 32 moves in the direction of arrow F with the arm portion 26 of the operation transmitting member 24 as a fulcrum. The pusher 31 slides in the direction of arrow G along the upper surface of the first movable contact 20. At this time, the first movable contact 20 remains in the state of descending to the right until the push point of the pusher 31 reaches a predetermined point (dead point), but when the dead point is crossed in the direction of arrow G, The movable contact 20 of No. 1 is switched to the inclined state of descending to the left. In this state, the second movable contact 20 is in contact with the common fixed contact 18c and the left second fixed contact 18b. In this case, the second movable contact 21 remains in the state of being inclined downward to the left.

On the other hand, when the operation knob 37 is rotated in the direction opposite to the arrow E in FIG. 3 from the neutral position, the operation member 32 is moved to the operation transmission member 24 via the leg portion 39. Although the pusher 31 slides in the direction of the arrow H along the upper surface of the first movable contact 20 with the arm portion 26 pivoting in the direction opposite to the arrow F, the pusher 31 slides in the direction of the arrow H.
0 remains the same as the downward slope. At this time,
The second movable contact 21 is switched to the downwardly inclined state.

When the rotational operation force on the operation knob 37 is released, the pushers 31 slide toward the original positions along the first and second movable contacts 20 and 21 and return, The operation member 32 and the operation knob 37 are automatically returned to the neutral position.

By the way, in the switch device having such a structure, for example, water is spilled in the vicinity of the operation knob 37, and the water penetrates into the switch panel 35 through the insertion hole 36 of the switch panel 35 and hangs on the switch case 11. Imagine that. In this case, switch case 1
The first is that the arm portion 26 of the operation transmission member 24 is in a hermetically sealed state except for the support holes 12 and 15 on both sides through which the arm portion 26 is inserted and supported, and therefore, even if the switch case 11 is splashed with water, Can be prevented from entering the switch case 17, and therefore water can be prevented from entering the first and second changeover switches 22 and 23 in the switch case 17.

In this case, in particular, each arm portion 26 is provided with a disk portion 28, and the support hole 12 is provided by the disk portion 28.
Since the portions 15 and 15 are closed, it is possible to more reliably prevent water from entering the switch case 17, and it is possible to further improve the waterproofness of the portions of the first and second changeover switches 22 and 23.

FIG. 5 shows a second embodiment of the present invention. This second embodiment differs from the above-mentioned first embodiment in the following points. That is, the operation knob 41 is integrally provided on the upper portion of the operation member 40 of the switch unit 34, and the upper portion of the operation knob 41 is inserted into the insertion hole 43 formed in the switch panel 42 from below and is inserted upward. Protruding to. Therefore, in this case, the operation member 40 is directly rocked by the operation knob 41. Also in the second embodiment, the same operation and effect as those of the first embodiment can be obtained.

The present invention is not limited to the embodiments described above and shown in the drawings, but can be modified or expanded as follows. The first and second changeover switches 22 and 23 may be, for example, a sliding switch structure instead of the swinging switch structure.

In the switch case 17, the insulator 11 and the side portion of the body 14 partially overlap each other, but instead of this, the end surface of the insulator 11 on the opening side and the end surface of the body 14 on the opening side are the same. May be brought into contact with each other, and the contact portion may be bonded by an adhesive or ultrasonic welding. Further, the insulator 11 may have a flat plate shape instead of the container shape.

[0033]

As is apparent from the above description, according to the present invention, even if water is splashed on the switch case portion, it is possible to prevent water from entering the switch case,
This has an excellent effect that the waterproof property of the switch portion in the switch case can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of essential parts showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a switch unit.

FIG. 3 is an overall vertical front view.

FIG. 4 is a longitudinal sectional side view.

FIG. 5 is a view corresponding to FIG. 3 showing a second embodiment of the present invention.

FIG. 6 is a vertical sectional front view showing a conventional configuration.

[Explanation of symbols]

11 is an insulator (base member), 12 is a support hole,
14 is a body (cover member), 15 is a support hole, 17 is a switch case, 18 is a first fixed contact group, 18a, 18
b is the first and second fixed contacts (fixed contacts), 18c is a common fixed contact (fixed contacts), 19 is a second fixed contact group, 19
a and 19b are first and second fixed contacts (fixed contacts), 19
c is a common fixed contact (fixed contact), 20 and 21 are first and second movable contacts (movable contacts), 22 and 23 are first and second changeover switches (switches), 24 is an operation transmission member, 2
6 is an arm part, 27 is a connecting part, 31 is a pusher (switch actuating member), 32 is an operating member, 33 is a fitting recess (connected part), 34 is a switch unit, 35 is a switch panel, 37 is an operating knob, Reference numeral 40 is an operation member, 41 is an operation knob, and 42 is a switch panel.

Claims (1)

[Claims] 1. A combination of a base member and a cover member, which has support holes on opposite sides thereof,
A switch case that is substantially sealed except for the support hole, a fixed contact provided on the base member, and a movable contact arranged in the switch case so as to come into contact with and separate from the fixed contact. Each of the switches has a configured switch, and arm portions that are disposed in the switch case and are rotatably supported by being inserted into the support holes on both sides. Each of the arms protrudes from the support hole to the outside of the switch case. An operation transmitting member having a connecting portion at the tip of the arm portion, a switch operating member provided on the operation transmitting member in the switch case, and operating the switch according to the rotation of the operation transmitting member, and both side portions. An operating member that has a connected portion connected to the connecting portion outside the switch case, and that rotates the operation transmitting member in response to a swing operation. A switch device characterized in that