JP2591904Y2 - Seesaw switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto-return type seesaw switch used, for example, for power supply / disconnection of a power window and a power antenna of an automobile.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show an example of a seesaw switch used for power supply / disconnection of a power window and a power antenna of an automobile. At almost in the center,
Plate-shaped fixed contacts 52, 53, 54, and 55 are mounted separately from each other.

A base 51 is provided above the base 51.
A plate-shaped rubber sheet 56 having the same outer dimensions as that of the above-mentioned is attached to the rubber sheet 56. The rubber sheet 56 has circular shapes at positions corresponding to the fixed contacts 52, 53 and the fixed contacts 54, 55. Movable portions 56a and 56b projecting upward in the figure in a dome shape are provided, respectively, and plate-shaped movable contacts 57 and 58 are provided at central portions of the respective movable portions 56a and 56b. Fixed contacts 52, 53, 54, 55
It is installed in a state where it is separated from.

[0004] A case 59 is mounted on the upper side of the base 51. A support portion 59a provided in a protruding state at the center of the case 59 has a front side and a rear side in FIG. Pivot shafts 59b and 59c protruding in the form of shafts are provided respectively, and pivot shafts 59b and 59c are provided on both sides thereof.
b, center line C corresponding to axis center C1, which is the center of 59c
Separation dimension L separated by distance L1, L1 on both sides from 0
At 10, push rod support holes 59d and 59e formed in round holes perpendicular to the upper side in the figure from the base 51 side.
Is provided.

[0005] Further, the pivots 59b,
The operation member 60 is attached to 59c.

[0006] At the center of the operating member 60 in the figure, a ceiling wall 60c having an acupressure surface 60c formed on the upper surface for pressing with a finger.
d, and shaft holes 60a, 60b are provided substantially in the center of the side walls 60e, 60f provided on the front side and the rear side in the figure of the top wall 60d, respectively.
When the operating member 60a is attached to the pivots 59b and 59c of the case 59, the operating angle θ1 between the return position a and the operating position b until the operating member 60 comes into contact with the case 51 around the shaft center C1 as the center of rotation. It rotates in a seesaw type within the range.

A push rod pressing portion 60g is provided below the center portion of the top wall 60d of the operation member 60, and the push rod pressing portion 60g is provided from the left side to the right side in FIG. A push rod contact surface 60g1 having a flat shape is formed.

[0008] Push rods 61 and 62 having an inverted T-shaped vertical cross section are inserted through the push rod support holes 59d and 59e of the case 59, respectively.

The push rods 61 and 62 have a case 5
9, stoppers 61a and 62a having outer dimensions larger than the inner diameters of the push rod support holes 59d and 59e below the support portions 59a.
The push rod support holes 59d, 5
Shafts 61b and 62b having outer diameters slightly smaller than the inner diameter of 9e are provided.

Below the stoppers 61a and 62a, there are provided convex portions 61a1 and 62a1 projecting downward in the drawing in a substantially cylindrical shape.
The movable portions 56a and 56b of the rubber sheet 56 are provided when the push rods 61 and 62 move downward.
The movable contacts 57, 58 are fixed via the fixed contacts 52, 53, 5
Move to 4 and 55 side.

[0011] A hemispherical operating member contact surface 6 is provided on the distal end side, which is the upper side of the shaft portions 61b and 62b in the figure.
1b1 and 62b1 are formed, and these operation member contact surfaces 61b1 and 62b1 are formed on the push rod pressing portion 60g of the operation member 60.
And moves with a stroke st1 between a return position c and an operating position d shown in FIG.

In the seesaw switch 50 having the above-described structure, the acupressure surface 6 of the operating member 60 is connected to the fixed contacts 52, 53, 54, and 55 with a circuit (not shown) connected thereto.
When the operation member 60 is rotated from the return position a to the operation position b as shown in FIG. 4 by pressing the left side downward in FIG.
The push rod abutting surface 60g1 of the push rod pressing portion 60g provided on the push rod 6 on the left side in FIG.
The push rod 61 is pressed downward in FIG. 3 while contacting the first operation member contact surface 61b1, so that the shaft 61b of the push rod 61 is
It moves downward while being supported by d.

When the push rod 61 moves downward, the convex portion 61a1 of the stopper 61a of the push rod 61 moves leftward in FIG. 3 against the elastic repulsive force of the movable portion 56a of the rubber sheet 56. Since the contact 57 is moved to the fixed contacts 52 and 53 on the left side in FIG. 3 to make contact with the fixed contacts 52 and 53,
The circuits connected to the fixed contacts 52 and 63 are switched from the cut-off state to the conductive state.

When the finger is released from the acupressure surface 60c of the operating member 60, the push rod 61 is returned upward in FIG. 3 by the elastic repulsive force of the movable portion 56a of the rubber sheet 56. 3 is separated from the fixed contacts 52 and 53 on the left side in FIG. 3, the circuits connected to the fixed contacts 52 and 63 are switched from the conductive state to the cutoff state.

When the right side of the acupressure surface 60c of the operation member 60 in FIG. 3 is pressed, the push rod 62 on the right side in FIG. 3 is moved downward in the same manner as described above. The movable contact 57 on the right side in FIG. 3 is moved to the fixed contacts 54 and 55 on the right side in FIG.
The circuits connected to the circuits 4, 55 are switched from the cutoff state to the conduction state.

However, the above-described conventional seesaw switch 50 has a structure in which a flat push rod contact surface 60g1 is formed on a push rod pressing portion 60g for operating the push rods 61 and 62. When the member 60 operates at the operation angle θ1, the flat push rod contact surface 60g1 of the push rod pressing portion 60g.
Are in sliding contact with the push rods 61 and 62. For example, depending on the installation location of the vehicle on which the seesaw switch 50 is mounted, for example, the ECE regulation NO. 21/01
If the size of the portion protruding into the vehicle interior is strictly limited due to the terms of the projections of the interior parts, etc., the operation member 60
Is set in advance so as to correspond to the operation angle θ1, and the stroke st of the push rods 61 and 62 is set. Therefore, the push rods 61 and 62 are set in accordance with the predetermined operation angle θ1. When the stroke st1 is set, the push rod support holes 59d, 59e are moved from the shaft center C1, which is the center of the pivots 59b, 59c.
(Push rods 61, 62) must be provided with a large distance, and if push rod support holes 59d, 59e having a large distance from the shaft center C1 are provided, the length of the push rod pressing portion 60g is increased. 3, the length of the operation member 60, which is the dimension from the left end to the right end in FIG. 3, becomes large, so that the entire seesaw switch 50 becomes large and There is a disadvantage that it cannot be said that the space is not wasted.

[0017]

The problem to be solved is that when the stroke of the push rod is set to a predetermined value without changing the operation angle of the operating member, the external dimensions of the entire switch become large. .

[0018]

In a seesaw switch according to the present invention, a base, a first and a second pair of fixed contacts disposed on the base, and a first and a second pair of fixed contacts are provided. A switch member having a rubber switch member disposed opposite to each other and having first and second movable contacts fixed to and separated from a first and second pair of fixed contacts, and a case covering the switch member; An operation having a top wall formed with a push rod pressing portion, a side wall extending from the top wall, and a pivot portion integrally formed on the side wall and rotatably supported by the case. The switch member is slidably supported by the member and the case, and can be brought into contact with a push rod pressing portion of the operation member.
The first movable contact is pressed to electrically connect the first movable contact to the first pair of fixed contacts, and the second movable contact of the switch member is pressed to push the second movable contact. In the seesaw switch including the second push rod electrically connected to the second pair of fixed contacts, the push rod pressing portion of the operation member can contact the first and second push rods, respectively. The first and second push rod contacting inclined surfaces are formed in a substantially V-shape, and the pivot portion of the operation member is located at the center of the first and second push rods and the push member is pushed. The rotation amount of the operating member is disposed between the rod pressing portion and the upper surface of the case, and the side wall of the operation member contacts the upper surface of the case when the operation member rotates by a predetermined rotation amount. The rotation amount regulating part that regulates It is characterized in that it has a configuration that extends toward the.

[0019]

In the seesaw switch according to the present invention, when the operating member is turned by a predetermined turning amount,
The rotation amount of the operation member is regulated by the rotation amount regulating portion extending from the side wall of the operation member toward the case abutting on the upper surface of the case. In addition, since the push rod pressing portion for obtaining the stroke of the push rod corresponding to the rotation angle of the operating member is inclined, the push rod pressing portion has a flat push rod in comparison with the push rod pressing portion having a flat shape. Since the stroke obtained by the part is obtained by the inclined surface, the distance from the rotation center of the operating member to the push rod can be small corresponding to the inclination angle of the inclined surface.

[0020]

1 and 2 show an embodiment of a seesaw switch according to the present invention.

The illustrated seesaw switch 1 mainly includes a base 2, a case 10, a first pair of fixed contacts 3 and 4, a second pair of fixed contacts 5 and 6, a rubber sheet 7, It comprises a first movable contact 8, a second movable contact 9, an operating member 11, a first push rod 12, and a second push rod 13.

At a substantially upper center of the upper surface of the base 2, a first pair of fixed contacts 3, 4 and a second pair of fixed contacts 5, 6 each having a plate shape are attached to be separated from each other. 2
A plate-like rubber sheet 7 having the same outer dimensions as the outer dimensions of the base 2 is assembled on the upper side of the base 2.

The rubber sheet 7 is provided with a first movable portion 7a which surrounds the first pair of fixed contacts 3 and 4 in a circular shape and projects in a dome shape toward the upper side in the figure. , A second movable portion 7 surrounding the second pair of fixed contacts 5 and 6 in a circular shape and projecting upward in the figure in a dome shape.
b is provided. At the center of the first movable part 7a,
A plate-shaped first movable contact 8 is attached in a state separated from the first pair of fixed contacts 3 and 4, and a plate-shaped second movable contact 7b is provided at the center of the second movable portion 7b. The movable contact 9 is mounted so as to be separated from the second pair of fixed contacts 5 and 6. Base 2, first pair of fixed contacts 3, 4, second
A switch member is constituted by the pair of fixed contacts 5 and 6, the rubber sheet 7, the first movable contact 8 and the second movable contact 9.

A box-shaped case 10 is mounted on the upper side of the base 2, and a supporting portion 10a provided in a protruding state at the center of the case 10 has a front side in FIG. Pivot 10 protruding axially toward the rear side
b, 10c are provided, and on both sides of the pivots 10b, 10c, an axial center C1 which is the center of the pivots 10b, 10c.
Push rod support holes 10d and 10e are formed on both sides of the center line C0 corresponding to the above and formed in round holes perpendicular to the upper side in the drawing from the base 2 side at a distance L20 separated by distances L2 and L2, respectively. It is.

Further, the pivots 10b,
An operation member 11 is attached to 10c.

In the central part of the operating member 11 in FIG. 1, a top wall 1 having an acupressure surface 11a for pressing with a finger is formed on the upper surface.
1b is provided. First and second pivotal amounts that extend toward the case 10 and that can contact the upper surface of the case 10 are provided on side walls 11c and 11d provided on the front side and the rear side of the top wall 11b in FIG. The restricting portions 11c1 and 11d1 are respectively formed. Shaft holes 11e, 11f are provided substantially below the center of the side walls 11c, 11d, and these shaft holes 11e, 11f are connected to the pivot 10 of the case 10.
b, 10c, the operating member 11 is rotated by the rotation center C2 that coincides with the axis center C1 of the pivots 10b, 10c.
From the return position A to the operating position B until the first and second rotation restricting portions 11c1 and 11d1 of the side walls 11c and 11d abut on the upper surface of the case 10 in a seesaw manner. Move. The shaft holes 11e and 11f are
The operation member 11 is arranged between a push rod pressing portion 11g described later and the upper surface of the case 10 at a central position of the first and second push rods 12 and 13 described later.

A push rod pressing portion 11g is provided on the lower surface side of the top wall 11b of the operation member 11, that is, on the first and second push rods 12 and 13, and the push rod pressing portion 11g has The first and second push rod contact inclinations projecting in a V-shape toward the rotation center C2 and inclined obliquely upward from the most protruding tip end 11g1 at the central portion corresponding to the rotation center C2. Surfaces 11g2 and 11g3 are respectively formed.

The push rod supporting holes 10d and 10e of the case 10 are respectively inserted with first and second push rods 12 and 13 having an inverted T-shaped vertical cross section.

The first and second push rods 12 and 13 have stoppers 12a and 13a having outer dimensions larger than the inner diameters of the push rod support holes 10d and 10e below the support portion 10a of the case 10. Shafts 12b and 13b having outer diameters slightly smaller than the inner diameters of the push rod support holes 10d and 10e are provided above the stoppers 12a and 13a.

Protrusions 12a1 and 13a1 are provided below the stoppers 12a and 13a so as to protrude downward in the figure in a substantially cylindrical shape.
2a1 and 13a1 are the first and second push rods 12,
When the first member 13 moves downward,
The first and second movable contacts 8 and 9 are moved to the first pair of fixed contacts 3 and 4 and the second pair of fixed contacts 5 and 6 via the second movable portions 7a and 7b.

A hemispherical operating member contact surface 12 is provided on the upper end of the shaft portions 12b and 13b in FIG.
b1 and 13b1 are provided, and these operating member contact surfaces 12b1 and 13b1 correspond to first and second push rod contact inclined surfaces 11g2 and 11g3 formed on the push rod pressing portion 11g of the operating member 11. Figure 1 while abutting
It moves with a stroke st1 between a return position C and an operation position D shown in the figure.

Here, the first and second rotation axes C2 (the axis C1 of the pivots 10b, 10c) of the operating member 11 for obtaining the predetermined stroke st1 of the push rods 12, 13 within the range of the operating angle θ1. 2 push rods 12 and 13
(The center of the push rod support holes 10d and 10e)
g to the first and second push rod contact slopes 11g
Since 2 and 11g3 are formed respectively, the first and second
Push rods 12 and 13 are separated by a distance L20 approaching the rotation center C2.

In the seesaw switch 1 having such a structure, the finger pressure of the operating member 11 is connected to the first pair of fixed contacts 3 and 4 and the second pair of fixed contacts 5 and 6 with a circuit (not shown). When the left side of the surface 11a in FIG. 1 is pressed downward in FIG. 1, the operating member 11 is rotated in the angle range θ1 from the return position A to the operating position B as shown in FIG. The first push rod pressing portion 11g on the left side in FIG.
The push rod abutment inclined surface 11g2 of the first push rod 12 on the left side in FIG.
The first push rod 12 is pressed downward in FIG. 2 while contacting the first push rod 12.
The shaft portion 12b moves downward while being supported by the push rod support hole 10d.

When the first push rod 12 moves downward, the convex portion 12a1 of the stopper 12a of the first push rod 12 is moved to the first movable portion 7 of the rubber sheet 7.
The first movable contact 8 on the left side in FIG. 1 is moved to the first pair of fixed contacts 3 and 4 on the left side in FIG. 4, the circuits connected to the first pair of fixed contacts 3 and 4 are switched from the cut-off state to the conductive state.

When the finger is released from the acupressure surface 11a of the operation member 11, the first push rod 12 is moved upward in FIG. 1 by the elastic repulsive force of the first movable portion 7a of the rubber sheet 7. Since the first movable contact 8 is separated from the first pair of fixed contacts 3 and 4 on the left side in FIG. 2, the circuit connected to the first pair of fixed contacts 3 and 4 is made conductive. The circuit is switched from the state to the cutoff state.

When the right side of the acupressure surface 11a of the operation member 11 in the figure is pressed, the second push rod 13 on the right side in FIG. 1 is moved downward in the same manner as described above. Therefore, the second movable contact 9 on the right side in FIG. 1 is moved to the second pair of fixed contacts 5 and 6 on the right side in FIG. , And the circuit connected to the second pair of fixed contacts 5 and 6 is switched from the cutoff state to the conduction state to switch the circuit.

During this time, the operating member 11 is moved to a predetermined angle range θ.
When rotating at 1, the first and second push rods 12,
13 is a push rod pressing portion 11g of the operating member 11, the first and second push rod contact slopes 11g2, 1
1g3 are formed, and the first and second push rods 1g2 are pressed and moved by the first and second push rod contacting inclined surfaces 11g2 and 11g3.
Reference numerals 2 and 13 denote separation distances L2 approaching the rotation center C2, respectively.
At 0, it moves with a predetermined stroke st1.

[0038]

As described above, according to the seesaw switch according to the present invention, when the operation member is turned by a predetermined amount of rotation, the switch is extended from the side wall of the operation member toward the case. The rotation amount of the operation member is restricted by the rotation amount regulating portion abutting on the upper surface of the case.
In addition, since the push rod pressing portion for obtaining the stroke of the push rod corresponding to the rotation angle of the operating member is inclined, the push rod pressing portion has a flat push rod in comparison with the push rod pressing portion having a flat shape. Since the stroke obtained by the part is obtained by the inclined surface, the separation dimension from the rotation center of the operating member to the push rod can be small corresponding to the inclination angle of the inclined surface. Since the push rod can be approached, there is no need to increase the length of the push rod pressing part, the length of the operating member does not increase, and the external shape of the entire switch is a compact one that matches the space of the installation location It has an excellent effect that it can be made.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment of a seesaw switch according to the present invention.

FIG. 2 is a longitudinal sectional side view of an operation state of the seesaw switch shown in FIG. 1;

FIG. 3 is a vertical sectional side view of a conventional seesaw switch.

FIG. 4 is a vertical sectional side view of an operation state of the seesaw switch shown in FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seesaw switch 2 base 3, 4 first pair of fixed contacts 5, 6 second pair of fixed contacts 7 (rubber switch member) rubber sheet 8 first movable contact 9 second movable contact 10 case 11 operation Member 11b Top wall 11c Side wall 11c1 (Rotation amount regulating portion) First rotation amount regulating portion 11d Side wall 11d1 (Rotation amount regulating portion) Second rotation amount regulating portion 11e, 11f (Pivot portion) Shaft hole 11g Push rod pressing portion 11g2, 11g3 Inclined surface for push rod contact 12 First push rod 13 Second push rod

Claims (1)

(57) [Scope of request for utility model registration] 1. A base, a first and second pair of fixed contacts disposed on the base, and a first and a second pair of fixed contacts disposed opposite to the first and second fixed contacts, respectively. A switch member having a rubber switch member having first and second movable contacts fixed to and separated from the pair of fixed contacts, a case covering the switch member, and a ceiling formed with a push rod pressing portion. The wall and this top wall
A side wall that is extended and integrally formed with the side wall, and
And a pivot portion rotatably supported by the case.
An operating member, which is slidably supported by the case, can contact the push rod pressing portion of the operating member, and when the operating member is rotated, the first movable contact of the switch member is moved. A first push rod for pressing and electrically connecting the first movable contact to the first pair of fixed contacts;
In a seesaw switch provided with a second push rod for pressing the movable contact and electrically connecting the second movable contact to the second pair of fixed contacts, the push rod pressing portion of the operating member includes: The first,
A first and a second, each of which can contact the second push rod;
The push rod abutment inclined surface is formed in a substantially V shape, and the pivot portion of the operating member is provided with the first and second push rods.
Push the operating member at the center of the pad
Arranged between the rod pressing portion and the upper surface of the case, the side wall of the operating member is operated by abutting on the upper surface of the case when the operating member is rotated by a predetermined amount of rotation. Rotation amount restricting unit that regulates the rotation amount of the member
Seesaw switch but which is characterized in that it is extended toward the casing.