JP2001312939A - Switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching device having stable lifetime. SOLUTION: The surface of one end of a second and a third fixed contacts 62a, 63a is formed to be slightly lower (a difference height L2) with respect to the surface of a first, a fourth, a fifth fixed contacts 61a, 64a, 65a. In the processing process of a fixed contact part 60, if a difference height is formed in a larger height than the difference height L2 by variability of pressing, the surface of the second and the third fixed contacts are in a state being embedded inside an insulating case 10, and the surface of the second and the third fixed contacts in this part will not be exposed, thereby defective electrical contact is generated. To solve this problem, the surface of a first fixed contact 21a and the surface of a second fixed contact 22a are formed into the same plane, and a recessed part 22d are formed on the surface of the second fixed contact. When a movable contact 3 is switched from the first fixed contact to the second fixed contact, the movable contact, which is in the state of being brought into contact with the surface of the first fixed contact, is dropped into the recessed part of the second fixed contact, so that arc discharge between the second fixed contact and the movable contact is restrained.

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 switch device suitable for switching contacts having different applied voltages.

[0002]

2. Description of the Related Art A conventional switch device will be described.
FIG. 13 is an exploded perspective view showing a conventional switch device, and FIG.
4 is a plan view showing an insulating case and a fixed contact portion of the conventional switch device, FIG. 15 is a sectional view taken along line 15-15 in FIG. 14, and FIG. 16 is a sectional view taken along line 16-16 in FIG. is there.

As shown in FIG. 13, this switch device comprises an insulating case 10, a fixed contact portion 60 which is insert-molded in the insulating case 10 and has a plurality of fixed contacts.
A movable contact portion 30 that is housed in the insulating case 10 and has a plurality of movable contacts and slides on the fixed contact portion 60 and a movable contact portion 30 that is housed in the insulating case 10 and places the movable contact portion 30 on the fixed contact portion 60 It is roughly constituted by a coil spring 40 that elastically urges, a movable contact portion 30, and a slider 50 that holds the coil spring 40 and rotates the movable contact portion 30.

The insulating case 10 is made of a synthetic resin material, is formed by molding, and has a substantially disk-shaped bottom wall 10a as an insulating substrate, and a side wall 10b extending vertically from the outer periphery of the bottom wall 10a. And a cylindrical projection 10c protruding inward of the insulating case 10 substantially at the center of the bottom wall 10a. In addition, a plurality of (for example, five) substantially rectangular through holes 10d (see FIG. 14) are formed at predetermined positions of the bottom wall 10a.

The fixed contact portion 60 is made of, for example, a metal plate material such as a phosphor bronze plate material or a copper plate material, is formed by press working, and has a first fixed contact member 61 and a second fixed contact member 61 provided in parallel with the first fixed contact member 61. A second fixed contact member 62; a second fixed contact member 63 provided in parallel with the second fixed contact member 62; and a second fixed contact member 61 provided outside the first, second, and third fixed contact members 61, 62, 63. It has a fourth fixed contact member 64 and a fifth fixed contact member 65 disposed outside the fourth fixed contact member 64.

The first, second and third fixed contact members 61, 62 and 63 have a first radius and are arranged concentrically. The first fixed contact member 61 includes a first fixed contact 61a having a substantially arc shape, and a first fixed contact 61a extending outward from one end of one side edge in the longitudinal direction of the first fixed contact 61a. It has a holding part 61b and a first terminal 61c that is bent substantially vertically from the tip of the first holding part 61b.

The second fixed contact member 62 extends outward from a substantially arc-shaped second fixed contact 62a and a substantially central portion of one longitudinal side edge of the second fixed contact 62a. Second
It has a holding portion 62b and a second terminal 62c that is bent substantially vertically from the tip of the second holding portion 62b. The position of the surface of the second fixed contact 62a on one end side in the longitudinal direction and the surface of the entire width surface of the second fixed contact 62a is on the other end side, and the entirety of the second fixed contact 62a is located on the other end side. The step size is provided at a position lower than the position of the surface of the width surface by being shifted by a dimension L2 (for example, about 0.2 mm).

The third fixed contact member 63 extends outwardly from a third fixed contact 63a having a substantially arc shape and one end of one longitudinal side edge of the third fixed contact 63a. And a third terminal 63c bent substantially vertically from the tip of the third holding portion 63b. The position of the surface of the third fixed contact 63a on one end side in the longitudinal direction and the surface of the entire width surface of the third fixed contact 63a is on the other end side, and the entirety of the third fixed contact 63a. The step size is provided at a position lower than the position of the surface of the width surface by being shifted by a dimension L2 (for example, about 0.2 mm).

That is, the first fixed contact 61a, the second fixed contact 62a, and the third fixed contact 63a are arranged concentrically, and the second fixed contact 62a is connected to the first fixed contact 6a.
1a and the third fixed contact 63a.
It is arranged between the fixed contact 61a and the third fixed contact 63a.

The position of the surface of the first fixed contact 61a, the position of the surface on the other end of the second fixed contact 62a, and the position of the surface on the other end of the third fixed contact 63a are as follows. They are formed to have the same surface.

The fourth fixed contact member 64 is provided with the first fixed contact member 64.
A fourth fixed contact 64a having a second radius larger than the first radius of the fixed contact member 61, having a substantially arc shape, and extending outward from one longitudinal side edge of the fourth fixed contact 64a. It has a fourth holding portion 64b provided and a fourth terminal 64c bent substantially vertically from an end of the fourth holding portion 64b.

The fifth fixed contact member 65 is connected to the fourth fixed contact member 65.
A fifth fixed contact 65a having a third radius larger than the second radius of the fixed contact member 64 and having a substantially arc shape, and extending outward from one longitudinal side edge of the fifth fixed contact 65a. It has a fifth holding portion 65b provided and a fifth terminal 65c bent substantially vertically from an end of the fifth holding portion 65b.

Also, the surface of the first fixed contact 61a and the fourth fixed contact 61a
The surface of the fixed contact 64a and the surface of the fifth fixed contact 65a are formed on the same plane.

As shown in FIG. 14, the fixed contact portion 60 includes first, second, third, and fourth fixed contacts 61a, 62a, 63a, 63a in the bottom wall 10a of the insulating case 10.
The fixed contact portion 60 and the bottom wall 10a are formed integrally by insert molding so that each surface of the fixed contact portion 64a is exposed. At this time, the surface on one end side of the second fixed contact 62a and the surface on one end side of the third fixed contact 63a are in contact with the first, fourth, and fifth fixed contacts 61 as described above.
a, 64a, and 65a are formed slightly lower than the respective surfaces (dimension L2: see FIG. 15).

From this, the second fixed contact 62a and the third fixed contact 62a
A bottom wall 10a around a part of the fixed contact 63a is formed substantially flush with a surface on one end side of the second fixed contact 62a and a surface on one end side of the third fixed contact 63a. Therefore, the other first, fourth, and fifth fixed contacts 61
a, 64a, and 65a are formed slightly lower than the periphery of each surface.

In other words, the periphery of the surface of the bottom wall 10a on one end side of the second fixed contact 62a and the surface on the one end side of the third fixed contact 63a are separated from the other first and fourth ends. , And the fifth fixed contacts 61 a, 64 a, 65 a are formed to be slightly depressed with respect to the periphery of each surface. The first,
Second, third, fourth, and fifth fixed contacts 61a, 62a,
63a, 64a, 65a, the first, second, third, fourth,
And the fifth terminals 61c, 62c, 63c, 64c, 65c
Is disposed so as to protrude outward from the bottom wall 10a at right angles to the bottom wall 10a.

In this state, the plurality of through holes 10d in the bottom wall 10a are respectively connected to the first, second, third, fourth, and fifth fixed contacts 61a, 62a, 63a, 64a, 65a.
Between the first, second, third, fourth, and fifth
The fixed contacts 61a, 62a, 63a, 64a, 65a are arranged as independent fixed contacts.

As shown in FIG. 13, the movable contact portion 30
For example, the base 30 is made of a metal material such as a phosphor bronze plate or a copper plate, is formed by press working, and has a substantially disc-like shape.
a, first, second, and third movable contacts 30b, 30c, 30d formed at predetermined positions of the base 30a in a direction orthogonal to the base 30a, respectively, and formed at substantially the center of the base 30a. It has a round hole 30e and four rectangular cutouts 30f provided in a cross shape in the round hole 30e.

The movable contact portion 30 is provided with the fixed contact portion 6.
0 first, second, third, fourth, and fifth fixed contacts 61
a, 62a, 63a, 64a, 65a, and in this state, the first movable contact 30b contacts the surface of the first, second, or third fixed contact 61a, 62a, 63a. (Sliding contact), the second movable contact 30
c is disposed so as to be in contact with the surface of the fourth fixed contact 64a, and furthermore, the third movable contact 30d is connected to the fifth fixed contact 6
It is arranged so as to be in contact with the surface of 5a.

The coil spring 40 is made of a linear metal material, and is formed in a spiral shape by winding. The coil spring 40 is disposed such that an end of the coil spring 40 is elastically contacted with the surface of the movable contact portion 30.

As shown in FIG. 13, the slider 50 is made of, for example, an insulating synthetic resin material, is formed by molding, and extends vertically from a disk-shaped upper wall 50a and an outer peripheral edge of the upper wall 50a. And a cylindrical portion 50c that projects inward from the center of the upper wall 50a. The coil spring 40 is inserted through the cylindrical portion 50c, and one end of the coil spring 40 is held by the upper wall 50a.

A round hole 30e of the movable contact portion 30 is inserted into the tip of the cylindrical portion 50c of the slider 50. For example, the movable contact portion 30 is formed by appropriate means such as snap-in engagement.
Is locked to the cylindrical portion 50c.

[0023]

As described above, the conventional switch device comprises first, second, third, fourth, and fifth fixed contact members 61, 62, 63, 64, and 65. The fixed contact portion 60 is connected to the bottom wall 10a of the insulating case 10.
First, second, third, fourth, and fifth fixed contacts 61a,
It is formed by insert molding so that each surface of 62a, 63a, 64a, and 65a is exposed. At this time, the surface of the full-width surface on one end side of the second fixed contact 62a and the surface of the full-width surface on one end side of the third fixed contact 63a are the other first, fourth, and fourth surfaces. 5 fixed contacts 61a, 64
a, 65a are formed slightly lower (step L2) with respect to the surface of the fixed contact portion 60 in the manufacturing process (working process) of the fixed contact portion 60, and the step size L2 is reduced. If the second fixed contact 62a is formed to have a dimension value larger than the dimension L2 due to a variation in mold dimension tolerance or the like, the surface of the full width surface on one end side of the second fixed contact 62a formed slightly lower may be used. The surface of the full width surface on one end side of the fixed contact 63a is in a state embedded in the bottom wall 10a of the insulating case 10 during insert molding.

That is, the surface on one end side of the second fixed contact 62a and the surface on one end side of the third fixed contact 63a formed slightly lower are formed of a synthetic resin material forming the bottom wall 10a. And the second and third fixed contacts 6 of this portion
A problem that the surfaces of the second fixed contact 62a and the third fixed contact 63a do not directly contact the first movable contact 30b of the movable contact portion 30, so that a so-called poor contact occurs. There is.

The switch device of the present invention solves the above-mentioned problems, and the purpose is to form a second fixed contact and a third fixed contact of a fixed contact portion and a first movable contact of a movable contact portion. Provided is a switch device capable of maintaining stable contact.

[0026]

A switch device according to the present invention comprises a first fixed contact and a second fixed contact provided in parallel with the first fixed contact.
The fixed contact, the insulating substrate integrated by insert molding so that the surfaces of the first fixed contact and the second fixed contact are exposed, and slidably contact the surfaces of the first and second fixed contacts, And a movable contact for switching the second fixed contact.
The surface of the fixed contact and the surface of the second fixed contact are formed in the same plane, a concave portion is formed on the surface of the second fixed contact, and the movable contact is movable when switching from the first fixed contact to the second fixed contact. The point is that the contact drops from the state of contact with the surface of the first fixed contact into the recess of the second fixed contact.

Further, in the switch device of the present invention, a first voltage value is applied to the first fixed contact, and a second fixed contact is applied to the second fixed contact.
A second voltage value is applied, and the second voltage value is set to a voltage value higher than the first voltage value.

Further, the switch device of the present invention has at least three or more fixed contacts whose surfaces are formed in the same plane, and an insulating material integrated by insert molding so that the surface of each fixed contact is exposed. A substrate and a movable contact that slides so as to sequentially switch the surface of each fixed contact are applied to each fixed contact so that the applied voltage value is sequentially increased in accordance with the order of sliding contact of the movable contacts. When a concave portion is formed on the other fixed contact side of the surface of one fixed contact to which a high voltage value of a pair of fixed contacts is applied, and when the movable contact switches from the other fixed contact to one fixed contact, That is, the movable contact falls from the state in which the movable contact is in contact with the surface of the other fixed contact into the recess of the one fixed contact.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a switch device according to the present invention will be described. FIG. 1 is an exploded perspective view showing an embodiment of a switch device of the present invention, FIG. 2 is a plan view showing an embodiment of an insulating case and a fixed contact portion of the switch device of the present invention, and FIG. 2 is a cross-sectional view taken along the line 3-3, FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG. 2, FIG. 5 is an explanatory view illustrating an insulating case and a fixed contact portion of the switch device of the present invention, FIG. 6 is a perspective view showing an embodiment of first, second, and third fixed contact members of the fixed contact portion of the switch device of the present invention, and FIG. 7 is an embodiment of a movable contact portion of the switch device of the present invention. FIG. 8 is a side view of FIG. 7, FIG.
Is a plan view showing an embodiment of the slider of the switch device of the present invention, FIG. 10 is a bottom view of FIG. 9, FIG. 11 is a side view of FIG. 9, and FIG. 12 is a view taken along line 12-12 of FIG. It is sectional drawing.

As shown in FIG. 1, this switch device
Insulation case 1 and insert molding in insulation case 1,
A fixed contact portion 20 having a plurality of fixed contacts, a movable contact portion 3 housed in the insulating case 1 and having a plurality of movable contacts, and slidably contacting the fixed contact portion 20, and housed in the insulating case 1. A coil spring 4 for elastically biasing the movable contact of the movable contact portion 3 onto the fixed contact of the fixed contact portion 20; a movable contact portion 3; and a slider for holding the coil spring 4 and rotating the movable contact portion 3. 5 schematically.

The insulating case 1 is made of a synthetic resin material,
A substantially disk-shaped bottom wall 1a as an insulating substrate, an annular side wall 1b extending perpendicularly from the outer peripheral edge of the bottom wall 1a, and an insulation at substantially the center of the bottom wall 1a. And a cylindrical tubular portion 1c protruding inward of the case 1. A plurality (for example, five) of substantially rectangular through-holes 1d (see FIG. 2) are formed at predetermined positions of the bottom wall 1a.

The fixed contact portion 20 is made of, for example, a metal plate material such as a phosphor bronze plate material or a copper plate material, is formed by press working, is formed in multiple layers as a whole, is substantially annular, and has a first fixed contact member. 21 and a first fixed contact member 21
A second fixed contact member 22 provided (adjacent to) the second fixed contact member 23, a third fixed contact member 23 provided (adjacent to) the second fixed contact member 22, and first, second, and third fixed contact members 21, 2
A fourth fixed contact member 24 disposed outside the second and the 23,
The fifth fixed contact member 25 is provided outside the fourth fixed contact member 4. At this time, the second fixed contact member 22 is disposed between the first fixed contact member 21 and the third fixed contact member 23, and the first fixed contact member 21, the second fixed contact member 22, and the second fixed contact member 22 are provided. Contact member 22 and third
Each of the fixed contact members 23 constitutes a pair of fixed contacts.

The first, second, and third fixed contact members 21, 22, and 23 have a first radius and are arranged concentrically. In addition, the first fixed contact member 21 includes:
The first voltage value is applied, the second fixed contact member 22 is applied with a second voltage value higher than the first voltage value, and the third fixed contact member 23 is applied with a second voltage value higher than the second voltage value. A third voltage value with a higher voltage value is applied.

The first fixed contact member 21 has a first radius, a substantially arc-shaped first fixed contact 21a, and a substantially central portion of one longitudinal side edge of the first fixed contact 21a. Holding portion 21b extending outward from the first holding portion 21b
And the first terminal 21c bent substantially vertically from the end of the first terminal 21c. The first fixed contact 21a is formed so that the entire surface is the same plane.

The second fixed contact member 22 has a first radius, a substantially arc-shaped second fixed contact 22a, and a substantially central portion of one longitudinal side edge of the second fixed contact 22a. Holding portion 22b extending outward from the second holding portion 22b
And a second terminal 22c bent substantially vertically from the end of the second terminal 22c. A substantially groove-shaped recess 22 having a predetermined width smaller than the entire width of the second fixed contact 22a is formed on a surface of the second fixed contact 22a on one end side in the longitudinal direction.
d is formed.

The recess 22d is formed only at one end of the second fixed contact 22a, and the depth of the recess 22d is a dimension L1 (for example, about 0.2 mm; see FIG. 3).
Is formed. The surface of the second fixed contact 22a other than the recess 22d is formed so as to be flush with the surface of the first fixed contact 21a of the first fixed contact member 21. Then, from the surface of the recess 22d (the bottom surface of the recess), the second
A smooth inclined surface is provided between the fixed contact 22a and the surface on the other end side. Also, this recess 22d
Is disposed on the side adjacent to the first fixed contact 21a. The second fixed contact member 22 is provided alongside (adjacent to) the first fixed contact member 21, and the second fixed contact member 2
2 constitutes, for example, one fixed contact, and the first fixed contact member 21 constitutes, for example, the other fixed contact.

The third fixed contact member 23 has a first radius and has a substantially circular arc-shaped third fixed contact 23a, and extends outward from one longitudinal side edge of the third fixed contact 23a. It has an extended third holding part 23b and a third terminal 23c bent substantially perpendicularly from an end of the third holding part 23b. A substantially groove-shaped recess 23d having a predetermined width smaller than the entire width of the third fixed contact 23a is formed on the surface of the third fixed contact 23a on one end side in the longitudinal direction. .

The recess 23d is formed only at one end of the third fixed contact 23a, and the depth of the recess 23d is a dimension L1 (for example, about 0.2 mm; see FIG. 3).
Is formed. The surface of the third fixed contact 23a other than the recess 23d is formed so as to be flush with the surface of the first fixed contact 21a of the first fixed contact member 21. A smooth inclined surface is provided between the surface of the concave portion 23d and the surface on the other end side of the third fixed contact 23a. The third fixed contact member 23 is provided alongside the second fixed contact member 22.

The fourth fixed contact member 24 is connected to the third fixed contact member 24.
A fourth fixed contact 24a having a second radius larger than the first radius of the fixed contact member 23 and having a substantially arc shape, and extending outward from one longitudinal side edge of the fourth fixed contact 24a. It has a fourth holding portion 24b provided and a fourth terminal 24c bent substantially perpendicularly from an end of the fourth holding portion 24b.

The fifth fixed contact member 25 is connected to the fourth fixed contact member 25.
A fifth fixed contact 25a having a third radius larger than the second radius of the fixed contact member 24 and having a substantially arc shape, and extending outward from one longitudinal side edge of the fifth fixed contact 25a. A fifth holding portion 25b is provided, and a fifth terminal 25c is bent substantially perpendicularly from an end of the fifth holding portion 25b.

The entire surface of the first fixed contact 21a, the entire surface of the fourth fixed contact 24a, and the entire surface of the fifth fixed contact 25a are formed on the same plane.

The fixed contact portion 20 has the first, second, third, fourth, and fifth fixed contacts 21a, 22a, 23a, 24a, and 25a in the bottom wall 10a of the insulating case 10. The fixed contact portion 20 and the bottom wall 10a are formed in the same plane by insert molding so as to be exposed in the bottom wall 10a. In other words, in this state, the surfaces of the first, second, third, fourth, and fifth fixed contacts 21a, 22a, 23a, 24a, 25a and the surface of the bottom wall 10a are the same. It is formed to be flat.

Also, the first, second, third, fourth, and fifth
First of the fixed contact members 21, 22, 23, 24, 25,
Second, third, fourth, and fifth terminals 21c, 22c, 23
c, 24c and 25c extend from the back surface of the bottom wall 10a to the bottom wall 10a.
Each of them is provided so as to protrude outwardly perpendicular to a.

In this state, a plurality of (for example, five) through holes 10d of the bottom wall 10a are respectively formed by the first, second,
Third, fourth, and fifth fixed contacts 21a, 22a, 23
a, 24a, and 25a, respectively.

The movable contact portion 3 is made of a metal material such as a phosphor bronze plate material or a copper plate material, and is formed by press working. The movable contact portion 3 has a substantially disk-shaped base 3a and a predetermined portion of the base 3a. First, second, and third movable contacts 3b, 3c, and 3d projecting in a direction orthogonal to each other, a round hole 3e formed in a substantially central portion of the base 3a, and a circular hole are provided in the round hole 3e. And four rectangular cutouts 3f.

The movable contact 3 is connected to the fixed contact 20
First, second, third, fourth, and fifth fixed contacts 21a,
22a, 23a, 24a, and 25a are disposed opposite to each other;
In this state, the first movable contact 3b is disposed so as to be in contact (sliding contact) with the surface of the first, second, or third fixed contact 21a, 22a, 23a, and the second movable contact 3b is provided. 3c
Are disposed so as to be in contact (sliding contact) with the surface of the fourth fixed contact 24a, and the third movable contact 3d is in contact (sliding contact) with the surface of the fifth fixed contact 25a. It is arranged in.

As shown in FIG. 1, the coil spring 4 is made of a linear metal material, and is formed in a spiral shape by winding. The coil spring 4 is disposed such that an end of the coil spring 4 is elastically contacted with the surface of the movable contact portion 3.

As shown in FIGS. 9 to 12, the slider 5 is made of, for example, an insulating synthetic resin material, is formed by molding, and is perpendicular to the disk-shaped upper wall 5a and the outer peripheral edge of the upper wall 5a. A cylindrical portion 5c protruding inward from the center of the upper wall 5a, and an annular concave portion 5d provided on the outer peripheral edge of the cylindrical portion 5c. In addition, the cylindrical portion 5
A step 5e is formed in the middle of c. The coil spring 4 is inserted through the cylindrical portion 5c, and the end of the coil spring 4 is held in the recess 5d.

A round hole 3e of the movable contact portion 3 is inserted into the tip of the cylindrical portion 5c of the slider 5, and the movable contact portion 3 is connected to the cylindrical portion 5c by appropriate means such as snap-in engagement.
It is locked to.

In the above-described embodiment, the fixed contacts switched by the first movable contact 3b of the movable contact portion 3 are the first, second, and third fixed contacts 21a, 22a, and 22a.
23a and three fixed contacts are described, but it is needless to say that the number is not limited to three and may be four or more.

Next, an outline of the operation of the switch device of the present invention will be described. First, the slider 5
For example, when the movable contact portion 3 locked by the slider 5 is rotated by a finger or the like, the movable contact portion 3 is also rotated. When the movable contact portion 3 is rotated, the first, second, and third movable contacts 3b, 3c, 3d of the movable contact portion 3 become first, second, third, fourth, or fourth movable contacts, respectively. 5 fixed contacts 21a,
The surfaces of 22a, 23a, 24a and 25a are brought into sliding contact.

At this time, the first movable contact 3b slides on the surface of the first, second, or third fixed contact 21a, 22a, 23a. For example, the slider 5 is rotated clockwise. Then, the first movable contact 3b becomes the first fixed contact 21
a from the state of contact with the second fixed contact 22a, and is switched. Then, at this time, from the state where the first movable contact 3b is in contact with the surface of the first fixed contact 21a, the first movable contact 3b falls into the recess 22d of the second fixed contact 22a, and the first movable contact 3b becomes the second fixed contact 22a. Will be contacted.

When the first movable contact 3b is further rotated from this state, the first movable contact 3b is moved from the inside of the recess 22d through a smooth inclined surface to the other end side of the second fixed contact 22a. Move slightly up to the surface of. The surface on the other end side is disposed on the same plane as the surface of the first fixed contact 21a.

This operation is also performed when the first movable contact 3b is switched from the state in which the first movable contact 3b contacts the surface on the other end side of the second fixed contact 22a to the third fixed contact 23a. After the operation, the first movable contact 3b falls into the concave portion 23d of the third fixed contact 23a, and the first movable contact 3b comes into contact with the third fixed contact 23a. Subsequent operations are the same as those described above, and will not be described.

As described above, when the first movable contact 3b rotates clockwise, the first movable contact 3b operates so as to fall into each of the recesses 22d and the inside of the recess 23d. A movable contact 3b, a second fixed contact 22a,
The third fixed contact 23a comes into contact with the surface when switching, so that arc discharge between the contacts is suppressed. At this time, even if the applied voltages of the second fixed contact 22a and the third fixed contact 23a on the sequentially switching side are set to a higher voltage, arc discharge between the contacts is more reliably performed by the above-described configuration. It is configured to be suppressed.

Next, when the first movable contact 3b rotates counterclockwise from this state, the state where the first movable contact 3b is lowered into the recess 23d is changed to the surface of the second fixed contact 22a on the other end side. It will move to get on. In this state, since the applied voltage is set lower for the second fixed contact 22a and the first fixed contact 21a on the switching side, the first movable contact 3b is
Although the second fixed contact 22a and the first fixed contact 21a come into point contact with each other at a point, the applied voltage is switched to the second fixed contact 22a and the first fixed contact 21a, respectively. Is absorbed, so that arc discharge is suppressed.

Next, a process for manufacturing the insulating case and the fixed contact portion will be described. First, the fixed contact portion 20
First, second, and third fixed contact members 21, 22, 23
Is formed by pressing, cutting and bending from a hoop material made of a continuous single metal plate. Also, the fourth and fifth fixed contact members 24 and 25 of the fixed contact portion 20
Is formed by pressing, cutting and bending from a hoop material made of a continuous single metal plate.

At this time, the first and second fixed contacts 21a and 22a of the first and second fixed contact members 21 and 22 and the second and third fixed contacts of the second and third fixed contact members 22 and 23 are provided. 22a and 23a are connected by respective connection portions (not shown), and are formed continuously. In this state, the recesses 22d and 23d are formed in the vicinity of the connection portions by a so-called half punch (projection) process. From this, the second, except for the recesses 22d and 23d,
The surfaces of the third fixed contacts 22a and 23a are formed on the same plane.

Next, the first, second, and
The first, second, third, and third fixed contact members 21, 22, and 23 are formed on the bottom wall 10 a of the insulating case 1 together with the fourth and fifth fixed contact members 24, 25 that are integrally formed. 4,
And fifth fixed contacts 21a, 22a, 23a, 24a, 2
5a is formed by insert molding so that each surface is exposed, and is processed so that the fixed contact portion 20 and the bottom wall 10a are integrated. At this time, a substantially rectangular through hole 1d (see FIG. 2) is formed in the bottom wall 10a.

The first, second, third, fourth, and fifth fixed contacts 21 are located at the positions where the through holes 1d are formed.
Each connection part (not shown) of a, 22a, 23a, 24a, 25a is arranged.

Next, each connecting portion (not shown) provided so as to straddle each through hole 1d is cut by press working, and each of the first, second, third, fourth, and fifth connecting portions is cut. Fixed contact 2
1a, 22a, 23a, 24a, and 25a are separated, and the first, second, third, fourth, and fifth parts are separated by this separation.
The fixed contacts 21a, 22a, 23a, 24a, 25a
It is provided integrally in the bottom wall 10a.

In this state, the concave portions 22d and 23 formed on the surfaces of the second and third fixed contacts 22a and 23a, respectively.
Only d is formed at a position lower than the surface of the bottom wall 10a by the step size L1.

[0063]

As described above, the switching device of the present invention
The surface of the first fixed contact and the surface of the second fixed contact are formed on the same plane, and a recess is formed on the surface of the second fixed contact;
When the movable contact switches from the first fixed contact to the second fixed contact, the movable contact falls into the recess of the second fixed contact from a state in which the movable contact is in contact with the surface of the first fixed contact, and the first and second fixed contacts and Since the arc discharge is suppressed between the movable contact and the movable contact, the surface of the second fixed contact other than the concave portion and the surface of the first fixed contact are formed in the same plane.
Each of these surfaces is formed on the same plane as the surface of the insulating substrate formed by the synthetic resin material at the time of the insert molding, and since it is easy to form each of these surfaces on the same plane, the synthetic resin is used. Since the material does not cover the surface of the fixed contact, it is possible to provide a switch device having a stable life due to a reduction in defective contacts.

Further, in the switch device of the present invention, the first fixed contact is applied with the first voltage value, and the second fixed contact is applied with the first fixed contact.
Since the second voltage value is applied and the second voltage value is set to a voltage value higher than the first voltage value, two fixed contacts having a difference in the voltage value applied to each fixed contact. Since the configuration is such that arc discharge does not occur more reliably even when switching, a stable and long-life switch device can be provided.

Further, in the switch device of the present invention, three or more fixed contacts are applied so that the applied voltage value is sequentially increased in accordance with the order of sliding contact of the movable contacts. A concave portion is formed on the surface of the one fixed contact to which the high voltage value is applied on the other fixed contact side,
When the movable contact switches from the other fixed contact to one fixed contact, the movable contact falls from the state of contacting the surface of the other fixed contact into the recess of one fixed contact, and the one fixed contact and the movable contact For example, air-conditioners (air conditioners)
A multi-contact switch device used for switching the air flow of
When applied to a switch device to which the voltage is applied so that the voltage applied to the fixed contact increases sequentially, the surface of the fixed contact is covered with a synthetic resin material of an insulating substrate integrated by insert molding. Since the arc discharge between the contacts is suppressed, the production efficiency and the production yield are good, and the switch device having a long life can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a switch device of the present invention.

FIG. 2 is a plan view showing an embodiment of an insulating case and a fixed contact portion of the switch device of the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is an explanatory diagram for explaining an insulating case and a fixed contact portion of the switch device of the present invention.

FIG. 6 is a perspective view showing an embodiment of first, second, and third fixed contact members of the fixed contact portion of the switch device of the present invention.

FIG. 7 is a plan view showing an embodiment of a movable contact portion of the switch device of the present invention.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a plan view showing an embodiment of a slider of the switch device of the present invention.

FIG. 10 is a bottom view of FIG. 9;

FIG. 11 is a side view of FIG. 9;

FIG. 12 is a sectional view taken along line 12-12 of FIG. 9;

FIG. 13 is an exploded perspective view showing a conventional switch device.

FIG. 14 is a plan view showing an insulating case and a fixed contact portion of a conventional switch device.

FIG. 15 is a sectional view taken along line 15-15 of FIG. 14;

FIG. 16 is a sectional view taken along line 16-16 of FIG. 14;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating case 1a Bottom wall 3 Movable contact 3a Base 3b 1st movable contact 3c 2nd movable contact 3d 3rd movable contact 3f Notch 4 Coil spring 5 Slider 5a Upper wall 5c Tube 5d Concave 20 Fixed contact 21 First Fixed contact member 21a First fixed contact 21c First terminal 22 Second fixed contact member 22a Second fixed contact 22c Second terminal 22d recess 23 Third fixed contact member 23a Third fixed contact 23c Third terminal 23d recess 24 Fourth fixed Contact member 24a Fourth fixed contact 24c Fourth terminal 25 Fifth fixed contact member 25a Fifth fixed contact 25c Fifth terminal

Claims (3)

[Claims] A first fixed contact, a second fixed contact provided in parallel with the first fixed contact, the first fixed contact, and the second fixed contact.
An insulating substrate integrated by insert molding so that the surface of the fixed contact is exposed, and a movable contact that slides on the surfaces of the first and second fixed contacts and switches between the first and second fixed contacts. And a surface of the first fixed contact and the second fixed contact.
The surface of the fixed contact is formed flush with the surface of the second fixed contact, a recess is formed on the surface of the second fixed contact, and when the movable contact switches from the first fixed contact to the second fixed contact, the movable contact is The switch device according to claim 1, wherein a state of contact with a surface of the first fixed contact falls into a concave portion of the second fixed contact. 2. A first voltage value is applied to the first fixed contact, a second voltage value is applied to the second fixed contact, and the second voltage value is the first voltage value. 2. The switch device according to claim 1, wherein the switch device is set to a higher voltage value. 3. At least three or more fixed contacts whose surfaces are formed in the same plane, an insulating substrate integrated by insert molding so that the surface of each of the fixed contacts is exposed, and each of the fixed contacts And a movable contact that slides so as to sequentially switch the surfaces of the movable contacts, and the fixed contacts are respectively applied so that an applied voltage value is sequentially increased in accordance with the order of the sliding contact of the movable contacts. A concave portion is formed on the other fixed contact side of the surface of the one fixed contact to which the high voltage value of the fixed contacts is applied, and the movable contact switches from the other fixed contact to the one fixed contact. The switch device is characterized in that the movable contact falls from the state in which the movable contact is in contact with the surface of the other fixed contact into the recess of the one fixed contact.