JP2000067725A - Sealing contact device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing contact device that has shielding performance that little changes even if current flows in the either positive or negative direction and can adjust contact gap between each fixed contact and movable contact. SOLUTION: A contact storing portion 5a has a space in it, and an insulation wall is axially stood at the center longitudinal to the contact storing portion 5a in the space. Two sets of contact portions comprising a pair of movable contact 8c and fixed contact 3a are individually stored in two spaces 5a2, 5a2 formed grabbing this insulation wall. Thus, two set of contact portions are independently arranged in the spaces 5a2, 5a2, spaces in the outside and inside directions of the both contact portions can be constituted substantially equal in size, spaces where arcs occurring in opening or closing of the contacts are stretched become equal, shielding performance little changes even if current flows in the either positive or negative direction to allow positive or negative mounting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed contact device suitable for a relay or an electromagnetic switch for a power load.

[0002]

2. Description of the Related Art Conventionally, as this kind of sealed contact device,
9 and 10 exist.

[0003] In the sealed contact device shown in FIG. 9, an airtight space is formed together with the bellows 52, and a sealed container 51 filled with hydrogen or a gas mainly composed of hydrogen, and a fixed contact 53.
a, a movable contact 54 provided with a movable contact 54a that contacts and separates from the fixed contact 53a, a contact pressure spring 55 that urges the movable contact 54 in the contact contact direction, and a contact separation. Container 51 so as to bias the movable contact 54 in the direction
Coil-shaped return spring 56 disposed between the inner surface of
And a return spring 5 around the bottom plate 57a and the bottom plate 57a.
6 and a bottomed cylindrical return spring frame 57 having a side wall 57b surrounding the outer surface of the movable contactor 6, and restricting the position of the movable contact 54 in the contact contact direction when the fixed contact 53a and the movable contact 54a are separated. Movable contact holder 58 and movable contact 54
One end 59a driven from the sealing container 51 protrudes from the sealing container 51, and the other end 59b is provided in the bottom plate 57a of the movable contact holder 58 and the return spring frame 57 through holes 58a, 57c respectively. And a movable shaft 59 which is fixed through the shaft.

Next, the operation of the sealed contact device will be described.

When one end 59a of the movable shaft 59 is driven by an electromagnet device or the like, the movable contact 5 of the movable contact 54 is moved.
4a contacts the fixed contact 53a. Thereafter, the movable shaft 59
Is further driven, the movable contact 54a becomes the fixed contact 53a.
The movable contact 54 in contact with the movable contact 54 does not move, but the movable contact holder 58 fixed to the movable shaft 59 moves to extend the contact pressure spring 55, and the movable contact 54a and the fixed contact 53
The contact pressure of a increases. At this time, the return spring 56 is compressed.

When the one end 59a of the movable shaft 59 is no longer driven, the movable shaft 59 is pushed back mainly by the spring force of the return spring 56 and returns to its original state. And
The arc generated between the contacts 54a and 53a at the time of return is
The movable contact 54 is extended toward both ends by magnetic means (not shown) and extinguished.

The sealed contact device shown in FIG.
Forming a hermetic space with the insulating member 62 and the second insulating member 63 of FIG. 1 and sealing container 61 in which hydrogen or a gas mainly composed of hydrogen is sealed, and fixed terminal 6 provided with fixed contact 64a.
4, a movable contact 65 provided with a movable contact 65a that comes into contact with and separates from the fixed contact 64a, a contact pressure spring 67 that urges the movable contact 65 in the contact contact direction, a central piece 68a, and both opposed pieces 6
The movable contact holder 68 is formed in a substantially U-shaped cross section having 8b and 68b and holds the contact pressure spring 67 in a compressed suspension state.
And one end 69a is formed in a thick, substantially cylindrical shape and is joined to the first joining member 62, an insertion hole 69b is provided in the axial direction, and the other end has an inner diameter larger than the inner diameter of the insertion hole 69b. Iron core 69 provided with a recessed portion 69c
And a movable core 70 having a surface 70a facing the fixed core 69 at one end in the axial direction and a concave portion 70c at the other end, and a movable core 70 in the contact separating direction. A coil-shaped return spring 71 which is fitted into the recess 69c of the fixed iron core 69 so as to be able to be biased and whose position is regulated, and a rod-shaped one end 66a of which is connected to the movable contact 65, and the other end 66b And a movable shaft 66 that penetrates through holes 69b, 70b provided in the axial direction of the fixed iron core 69 and the movable iron core 70, respectively, and is fixed in a state of protruding from the recess 70c of the movable iron core 70.

Next, the operation of the sealed contact device will be described.

Before the coil 72 is excited, the movable contact 65a faces the fixed contact 64a with a certain contact gap. When the coil 72 is excited, the movable iron core 70 is attracted to the fixed iron core 69, and the movable shaft 65 fixed to the movable iron core 70 is driven, whereby the movable contact 65a comes into contact with the fixed contact 64a. Thereafter, when the spring load of the contact pressure spring 67 suddenly increases and the movable shaft 66 is further driven,
The movable contact 65a is driven by the overtravel amount, and the spring load is further increased. The total of the above-mentioned contact gap and the amount of overtravel is the stroke of the movable contact 65a.

When the excitation of the coil 72 is cut off, the movable contact 65 mainly includes the contact pressure spring 67 and the return spring 7.
With the urging force of 1, the movable contact 65a is separated from the fixed contact 64a. The arc generated between the contacts at the time of return is extended toward both ends of the movable contact 65 by the magnetic field of the magnetic means (not shown) and extinguished.

[0011]

In the above-mentioned sealed contact device, as described above, the arc generated when the contacts are opened and closed is extended and extinguished by a permanent magnet (not shown) provided outside. Has become. Here, the current supplied to the electromagnet has directionality. When the current flows in the forward direction, the arc is extended outward of the movable contact, and when the current flows in the reverse direction, the arc is extended inward of the movable contact.
For this reason, in the sealed contact device, the space in which the arc is stretched is important, and in the above-described conventional sealed contact device, the space in which the arc is stretched greatly differs between the inside and outside of the movable contact. That is, there is a problem that the breaking performance differs when a current flows in the forward direction and the reverse direction. Further, in the above-mentioned sealed contact device, since the height position of each fixed contact is different due to component tolerance and assembly tolerance, the contact gap between the contact of one movable contact and the fixed contact and the other movable contact and the fixed contact When the contact gaps between the contacts are different, the contact gap between the contacts cannot be adjusted, and the switching performance of the contacts becomes unstable.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and the breaking performance hardly changes even if a current flows in either a forward or reverse direction, and a contact between each fixed contact and a movable contact. An object is to provide a sealed contact device capable of adjusting a gap.

[0013]

In order to achieve the above object, a plurality of fixed terminals having a fixed contact at one end and a plurality of movable contacts which are in contact with and separated from the fixed contacts of the plurality of fixed terminals are provided. Forming a movable contact, a driving unit for driving the movable contact to move the movable contact to and away from the fixed contact, and an airtight space for accommodating the fixed terminal, the movable contact and the electromagnet for driving a contact. A sealed contact device having: a plurality of spaces separated by an insulating member in the housing; and a plurality of contact portions including a pair of fixed contacts and movable contacts arranged in the space. With this configuration, each contact portion is arranged in an insulated space, and furthermore, in the space, the space in the outer direction and the space in the inner direction of the movable contact having the movable contact are substantially equal in size. In this way, the space where the arc is stretched becomes the same, so that the breaking performance is not changed regardless of whether the current flows in the forward or reverse direction, the forward and reverse mounting is possible, and two sets of a pair of movable contacts and fixed contacts are provided. Since the contact portions are insulated by the insulating member, the insulation resistance between the contacts due to the accumulation of the scattered portions of the contacts after the contacts are opened and closed can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the movable contact has a plurality of legs along a direction in which a movable contact is fixed to a tip portion and a movable contact and a fixed contact are separated from each other. A plurality of legs, and a plurality of leg pieces formed with longitudinal slits extending along the longitudinal direction. When the mounting positions of the two fixed contacts are different due to component tolerance and assembly tolerance, for example, a flathead screwdriver is used. By inserting such a jig into the slit and deforming the slit in the width direction of the leg, the position of the movable contact can be moved in a direction away from the fixed contact. By adjusting the contact gaps between the contacts to be equal to each other, the switching performance of the contacts can be stabilized.

According to a third aspect of the present invention, in the second aspect of the present invention, since the width of the leg piece in the portion provided with the slit is formed to be wide, mounting of the two fixed contacts according to component tolerance and assembly tolerance. When the positions are different, for example, by inserting a jig such as a flathead screwdriver into the slit and deforming the slit in the width direction of the leg piece, the movable contact can be moved in a direction away from the fixed contact, By pressing the wide formed portion of the leg piece, the movable contact can be moved in a direction approaching the fixed contact, whereby the contact gap between each movable contact and the fixed contact can be made equal to each other. , The switching performance of the contacts can be stabilized.

According to a fourth aspect of the present invention, in the second aspect of the present invention, through holes are provided at both ends in the width direction of the leg with the slit interposed therebetween, so that two fixed contacts can be attached according to component tolerance and assembly tolerance. When the positions are different, for example, a jig such as a flathead screwdriver is inserted into the slit to deform the slit in the width direction of the leg, or a pin-shaped jig is inserted into through holes provided on both sides of the slit. When inserted and deformed in the width direction of the legs, the movable contact can be moved away from the fixed contact,
When the through hole is deformed in the longitudinal direction of the leg, the movable contact can be moved in a direction approaching the fixed contact, thereby adjusting the contact gap between each movable contact and the fixed contact so that they are equal to each other. As a result, the switching performance of the contacts can be stabilized.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the movable contact has a movable contact fixed to a tip end thereof, and a plurality of legs extending in a direction in which the movable contact and the fixed contact come and go. A plurality of leg pieces, and a bent portion is formed in a part of the plurality of leg pieces, so that the bent portions of the leg pieces are added when the mounting positions of the two fixed contacts differ from each other due to component tolerance and assembly tolerance. By pressing and deforming the leg in the longitudinal direction, the movable contact can be moved in the direction approaching the fixed contact, thereby adjusting the contact gap between each movable contact and the fixed contact so that they are equal to each other. Thus, the switching performance of the contacts can be stabilized.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the movable contact has a movable contact fixed to a tip end thereof and a plurality of legs extending along a direction in which the movable contact comes into contact with and separates from the fixed contact. Since the plurality of leg pieces are formed with a substantially cross-shaped slit in each of the plurality of leg pieces, when the mounting positions of the two fixed contacts differ from each other due to component tolerances and assembly tolerances, for example, a cure such as a flathead screwdriver is used. The movable contact can be moved in a direction away from the fixed contact by inserting the tool into the slit to deform the slit in the width direction of the leg, and the movable contact can be formed by deforming the slit in the longitudinal direction of the leg. Can be moved in the direction approaching the fixed contacts, thereby adjusting the contact gap between each movable contact and the fixed contact so that they are equal to each other. Te, it is possible to stabilize the contact of the opening and closing performance.

According to a seventh aspect of the present invention, in the first aspect of the present invention, a metal joining member for fixing the driving portion to the housing is provided, and the metal joining member has a mounting portion to which the driving portion is joined. After adjusting the height or mounting angle of the driving unit, the driving unit can be mounted on the mounting part of the metal member, the overtravel amount of the movable contact can be adjusted, and the switching performance of the contact can be stabilized. it can.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the driving unit includes a contact driving electromagnet, a mounting portion on which one magnetic pole portion of the contact driving electromagnet is mounted, and a contact driving electromagnet. And a yoke formed in a substantially L-shaped cross section, comprising a side portion disposed along the side surface of the electromagnet, and swingably supported by the side portion in opposition to the other magnetic pole portion of the contact driving electromagnet. An armature having an approximately L-shaped cross-section, comprising an oscillating portion and an extended portion extending from one end of the oscillating portion on the supported side to near the lower end of one magnetic pole portion of the contact driving electromagnet; By having a position regulating member that regulates the position of the movable portion of the armature in the stroke direction near the lower end of one magnetic pole portion of the contact driving electromagnet, the stroke and over stroke are performed to stabilize the contact performance of the movable contact and the fixed contact. When stabilizing the travel amount By regulating the stroke of the armature composed of the swinging part and the extended part by the position regulating member with the extended part longer than the swinging part, the variation in the stroke is suppressed small and the contact opening / closing performance is improved. Can be stabilized.

[0021]

(Embodiment 1) This embodiment is shown in FIG.
This will be described with reference to FIG. As shown in FIG. 1, the sealed contact device includes a sealed contact portion B and a driving portion C in a housing A.
Is stored.

First, the housing A will be described. The housing A is formed by airtightly joining a box-shaped cover 2 having an open surface to a metal joining member 4 brazed by a sheet braze 16 to a body 1 formed in a rectangular shape with an insulating material such as ceramic. It is formed.

At two locations on the bottom surface of the body 1, fixed terminal holes 1a, 1a are respectively arranged at one end in the longitudinal direction of the body 1. The fixed terminals 3, 3 inserted into the fixed terminal holes 1a, 1a are formed in a substantially cylindrical shape, and the fixed contact 3 is provided at one end.
a is fixed, and a flange 3b is provided at the other end. Thus, the fixed terminal 3 is inserted into the fixed terminal hole 1a via the washer 3c, and the vicinity of the flange 3b is brazed to the body 1 while the other end protrudes from the body 1 so as to be fixed to the body 1. The fixed terminal 3 is hermetically bonded.

Further, two coil terminal holes 1b and 1b are provided at the other end of the bottom surface of the body 1, and a coil terminal 17 inserted into the coil terminal holes 1b and 1b is provided.
17 is formed in a substantially columnar shape provided with a flange portion 17a at one end. Thus, the coil terminals 17, 17 are fixed terminals 3, 3,
In the same manner as described above, they are inserted into the coil terminal holes 1b and 1b via the washers 17b and are hermetically joined to the body 1.

The metal joining member 4 is for joining the sealing contact portion B and the driving portion C, and the surface on the side where the sealing contact portion B and the driving portion C are joined, respectively, A pair of projecting pieces 4a, 4a and 4c, 4c are respectively provided on the side face, and supporting pieces 4b, 4d are provided on the inner face in the width direction.

The sealing contact portion B is formed by joining a first insulating member 5 and a second insulating member 7 together.

The first insulating member 5 is composed of a contact housing 5a forming a space for housing the contact and a pedestal 5b. The contact accommodating portion 5a has a space formed therein, and an insulating wall 5a1 is provided in the space. The insulating wall 5a1
The contact receiving portion 5a is erected in the axial direction at the center in the longitudinal direction,
The two spaces formed with the insulating wall 5a1 interposed therebetween are independent and separate spaces 5a2 and 5a2. In the present embodiment, two sets of contact portions each including a pair of movable contacts and fixed contacts are individually and separately accommodated in the spaces 5a2 and 5a2 insulated by the insulating walls 5a1.
As a result, the two sets of contact portions are separated into the respective spaces 5a2, 5a
a2, the space in the outer direction and the space in the inner direction of both contact portions can be configured to be substantially equal in size, and the space in which the arc generated at the time of opening and closing the contacts can be made equal can be made equal. Regardless of whether the current flows in the forward or reverse direction, the blocking performance hardly changes and the forward and reverse mounting is possible. In addition, since the insulating metal wall 5a1 is provided between the two contact portions, after the contacts are opened and closed, the insulation between the contacts due to the accumulation of the scattered portions of the contacts is excellent. Further, a concave portion 5a3 through which a movable contact 8 described later is inserted is formed at the upper end of the side surface of the contact accommodating portion 5a. The pedestal portion 5b is formed in a box shape whose dimension in the longitudinal direction and the width direction is slightly larger than that of the contact accommodating portion 5a.
Are provided with a pair of through-holes 5b1 and a pair of joining portions 5b2 for joining with the protruding pieces 4c of the metal joining member 4. A contact housing 5a is provided upright on the upper surface, and communicates with the spaces 5a2 and 5a2. The insulating member 5 is joined to the metal joining member 4 by joining the joining portion 5b2 and one side surface of the pedestal portion 5b to a pair of projecting pieces 4c and 4d of the metal joining member 4. At this time, the fixed terminal 3 hermetically joined to the body 1 is inserted into the through hole 5b1 of the pedestal portion 5b to form a space 5a provided in the contact accommodating portion 5a of the insulating member 5.
2, 5a2 are separately arranged.

The second insulating member 7 has a concave portion 7 on one end surface thereof.
a, and a projection 7b is formed in the recess 7a, and is formed in a box shape having an open end at the other end, and has a longitudinal dimension of a pedestal 5b constituting the first insulating member 5. Are formed to have substantially the same dimensions as those in the longitudinal direction. The second insulating member 7 is joined to the first insulating member 5 and the contact housing 5
A leaf spring 19 is disposed in the concave portion 7a to close the opening surface of a. The leaf spring 19 is disposed between the cover 2 and the insulating member 7 and presses the insulating member 7 against the insulating member 5. The leaf spring 19 has a mounting hole 19a at the center and a projection provided in the concave portion 7a. The portion 7b is inserted into the mounting hole 19a and disposed in the recess 7a. Thus, when the cover 2 is air-tightly joined to the metal joining member 4, the second insulating member 7 is pressed against the first insulating member 5 by the cover 2 and the leaf spring 19 to close the opening surface of the insulating member 5. .

The movable contact 8 has a pair of leg pieces 8a,
One end 8b is formed in a shape in which one end of the leg pieces 8a, 8a are joined, and each leg piece 8a is bent substantially vertically, and the movable contacts 8c, 8c are respectively formed on the lower surface of the other end.
Is fixed. The movable contact 8 has a space 5 insulated by an insulating wall 5a1 of the insulating member 5 with one end 8b inserted into a recess 5a3 provided in the first insulating member 5.
The movable pieces 8c, 8c are disposed in the space by inserting the leg pieces 8a, 8a into the a2, 5a2, respectively.

Thus, in the spaces 5a2 and 5a2 provided in the contact accommodating portion 5a of the insulating member 5, two sets of contact portions each comprising a pair of movable contacts 8c and fixed contacts 3a are separately and independently arranged. Is established.

The magnetic means 6 comprises a permanent magnet 6a and a U-shaped magnetic member 6b made of a magnetic material. A pair of permanent magnets 6a are mounted on the upper surface of the pedestal 5b of the insulating member 5. The contact members 5a are brought into contact with both side surfaces of the contact housing portion 5a, and the magnetic members 6b
Is attached to the insulating member 5. Thereby, the magnetic means 6
A magnetic field is formed in a space where the movable contact 8c and the fixed contact 3a exist, and an arc generated when the two contacts are separated is extinguished.

Next, the driving section C will be described.

The driving section C includes a coil 9a, a coil bobbin 9
The contact driving electromagnet 9 including the core b and the fixed core 9 c, the yoke 10, and the armature 12.

The coil bobbin 9b has an insertion hole 9b1 into which the fixed iron core 9c is inserted in the axial direction, and is formed in a substantially cylindrical shape having a pair of terminal portions 9b2 protruding from its lower end. The terminal portion 9b2 is formed in a substantially rectangular parallelepiped shape, and one end of a winding 9b3 is disposed inside each of the terminal portions 9b2, and is joined to the terminal plate 9d. Furthermore, this terminal plate 9
d and the coil terminal 17 are fixed by welding, caulking or the like. A position regulating member 1 is provided on the upper end of the coil bobbin 9b.
1 is attached. The position regulating member 11 regulates the position of the armature 12 described later, is formed in a substantially U-shape, and has a regulating piece 11a at its tip. The fixed iron core 9c is formed in a substantially cylindrical shape having a flange 9c1 at one end, and is inserted into an insertion hole 9c4 provided in the coil bobbin 9a.

The yoke 10 is for forming a magnetic path together with an armature 12 to be described later. The yoke 10 is mounted on the mounting portion 10a on which the coil bobbin 9b is mounted, and is suspended from one end of the mounting portion 10a along the side surface of the coil bobbin 9b. And the side portion 10b to be formed is substantially L-shaped. The mounting portion 10a is provided with a through hole 10a1 communicating with the insertion hole 9b1 of the coil bobbin 9b at the center of the bottom surface, and the width of one end portion on the side portion 10b side is formed to be narrow. Member 4
A pair of protruding pieces 10a2 that are joined to the protruding pieces 4a are provided in a protruding manner. The side portion 10b has a pair of protrusions 10b for attaching return springs 14 to be described later to both side ends of the back surface.
1 is protruded, and one end portion is formed to have the same size as one end portion of the mounting portion 10a, whereby a concave portion 10c for disposing the terminal portion 9b2 of the coil bobbin 9b in this portion.
Is formed.

Thus, the terminal 9b2 provided at the lower end of the coil bobbin 9b is disposed in the recess 10c formed in the yoke 10, and the fixed iron core 9c is connected to the through hole 10a1.
And the coil bobbin 9 b is fixed to the yoke 10. The yoke 10 is formed by connecting the protruding piece 10a2 to the metal joining member 4.
Of the metal joint member 4 with the protruding piece 4a and the side portion 10b.
b and is fixed to the metal joining member 4 by being brought into contact with each other and joined. As described above, the metal joining member 4 has a configuration in which the pair of protruding pieces 4a and the supporting pieces 4b are formed, and the yoke 10 is bonded by the protruding pieces 4a and the supporting pieces 4b. By temporarily fixing to the metal joining member 4 and adjusting the height position or the mounting angle of the coil bobbin 9b and then joining to the metal joining member 4, the overtravel amount of the movable contact 8c can be adjusted, and the opening and closing of the contact can be performed. Performance can be stabilized.

The armature 12 is attracted to the fixed iron core 9b when the coil 9a is excited, and is formed in a thin plate shape. The contact pressure spring 13 has one end fixed to the armature 12 and the other end fixed to the movable contact 8 via an insulating member 15. This contact pressure spring 1
Reference numeral 3 denotes a movable contact 8c in which the armature 12 is attracted to the fixed iron core 9c and is fixed to the tip of the movable contact 8;
, And then bend by being pushed further,
The contact pressure is configured to be obtained. The return spring 14 biases the movable contact 8 in a direction in which the movable contact 8c is separated from the fixed contact 3a, and extends from both ends of the fixed portion 14a having a pair of fixing holes 14c at both ends and from both ends of the fixed portion 14a. And a pair of leg pieces 14b provided, and the leg pieces 14b are formed by being bent in a substantially rectangular shape. One end of the leg piece 14b is fixed to the armature 12, and the other end of the leg piece 14b is provided in fixing holes 14c provided at both ends of the fixing portion 14a, and in the side portion 10b of the yoke 10 described above. Yoke 1 fitted into the projected part 10b1
It is fixed to 0. Further, the insulating member 15 includes the contact pressure spring 14.
And the other end 8b of the movable contact 8 are fixed to each other, are formed in a substantially rectangular parallelepiped shape, and have a length dimension and a height dimension in the longitudinal direction of the position regulating member 11 provided on the upper surface of the coil bobbin 9b. Are formed to have dimensions slightly shorter than those of. Thus, the insulating member 15 is used as the position regulating member 1.
When the movable contact 8 c and the fixed contact 3 a are separated from each other, both ends thereof are regulated by regulating pieces 11 b provided at the tip of the position regulating member 11, thereby regulating the position of the armature 12.

The sealed contact device configured as described above is
It works as follows.

Before the coil 9a is excited, the movable contact 8c is opposed to the movable contact 3a with a contact gap. When the coil 9a is excited, the armature 12 is attracted to the fixed iron core 9c, and the contact pressure spring 13 fixed to the armature 12 and the movable contact 8 fixed to the tip of the contact pressure spring 13 via the insulating member 15 are formed. When driven, the movable contact 8c contacts the fixed contact 3a. Thereafter, when the movable contact 8 is further driven, the contact pressure spring 13 bends, whereby a contact pressure can be obtained.

When the excitation of the coil 9a is cut off, the armature 12 separates from the fixed iron core 9c and the armature 12
The movable contact 8 fixed to the distal end of the contact pressure spring 13 and the contact pressure spring 13 via an insulating member 15 is driven, the movable contact 8c is separated from the fixed contact 3a, and the position of the insulating member 15 is regulated. The position of the armature 8 is regulated by contacting the regulating piece 11b of the member 11. In the present embodiment, two sets of contact portions composed of the pair of movable contacts 8c and the movable contacts 3a are provided in separate spaces 5a2, 5a2, respectively.
Since the contact portions are arranged inside, the space in the outer direction and the space in the inner direction of both contact portions can be configured to be substantially equal in size, the space in which the arc generated at the time of contact opening and closing becomes equal is equal, and the current can be either forward or reverse. Even if it flows in the direction of, the blocking performance hardly changes, and it is possible to mount it in the reverse direction. Further, since the insulating wall 5a1 is provided between both contact portions, after the contact is opened and closed,
Excellent insulation resistance between contacts due to accumulation of scattering of contacts. (Embodiment 2) Since the basic configuration of this embodiment is common to that of Embodiment 1, common portions are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

In the conventional sealed contact device, since the height positions of the fixed contacts 3a are different from each other due to component tolerance and assembly tolerance, the contact gap between the contact between the movable contact 8c and the fixed contact 3a and the other contact. When the contact gaps between the movable contact 8c and the fixed contact 3a are different from each other, the contact gaps between the respective contacts cannot be adjusted, and the switching performance of the contacts is not stable.

In the present embodiment, in order to solve the above-mentioned problem, as shown in FIG. 3, in the longitudinal direction of the leg 8a near the center in the longitudinal and width directions of each leg 8a of the movable contact 8. A vertically long slit 8d is provided along each of them.

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 which are hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8d, The leg 8a is deformed in the width direction. This shortens the length of the leg piece 8a in the longitudinal direction,
The position of the movable contact 8c fixed to the tip of each leg 8a can be moved in a direction away from the fixed contacts 3a, 3a, and a contact gap G1 between one movable contact 8c and the fixed contact 3a, The contact can be adjusted so that the contact gap G2 between the other movable contact 4b and the fixed contact 3a becomes equal. As a result, each of the fixed contacts 3a, 3
Even if the height position a is shifted, the contact gap between the contacts can be adjusted to stabilize the switching performance of the contacts. (Embodiment 3) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

In the conventional sealed contact device, the height position of each fixed contact 3a is different depending on the component tolerance and the assembly tolerance, so that the gap between the contact between one movable contact 8c and the fixed contact 3a and the other movable contact 8c Contact 8c and fixed contact 3
When the contact gaps between the contacts a differ, the contact gap between the contacts cannot be adjusted, and there has been a problem that the switching performance of the contacts is not stable.

In the present embodiment, in order to solve the above problem, as shown in FIG. 4, the movable contact 8 extends along the longitudinal direction of the leg 8a near the center in the longitudinal and width directions of the leg 8a. A vertically long slit 8e is provided, and projections 8 are provided on both side ends of each leg 8a near the position where the slit 8e is provided.
f and 8f are provided to increase the width.

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically joined to the body 1 are respectively different, a jig such as a flathead screwdriver is inserted into the slit 8e, The leg 8a is deformed in the width direction, the length of the leg 8a in the longitudinal direction is reduced, and the movable contact 8c fixed to the tip of each leg 8a is fixed to the fixed contact 3.
a, 3a. In addition, the protrusions 8e, 8e provided on both side ends of each leg 8a are pressurized and pushed into the inside of each leg 8a, so that the length of each leg 8a in the longitudinal direction is lengthened, and movable. The contact 8c can be moved in a direction approaching the fixed contact 3a. Thus, even if the height positions of the fixed contacts 3a, 3a are shifted, the contact gap G1 between the one movable contact 8c and the fixed contact 3a, and the contact between the other movable contact 8c and the fixed contact 3a. The gap G2 can be adjusted to be equal, and the switching performance of the contacts can be stabilized.

(Embodiment 4) Since the basic configuration of this embodiment is the same as that of Embodiment 1, common parts are denoted by common reference numerals, and description thereof is omitted. Only the details will be described.

In the conventional sealed contact device, the height position of each fixed contact 3a is different depending on the component tolerance and the assembly tolerance, so that the contact gap between the contact between the movable contact 8c and the fixed contact 3a and the other contact. When the contact gaps between the movable contact 8c and the fixed contact 3a are different from each other, there is a problem that the contact gap between the contacts cannot be adjusted, and the switching performance of the contacts is not stable.

In the present embodiment, in order to solve the above problem, as shown in FIG. 5, near the center in the longitudinal direction and the width direction of each leg 8a of the movable contact 8 along the longitudinal direction of the leg 8a. Each of the slits 8g is provided vertically, and a pair of through holes 8h are provided at both ends in the width direction of the leg piece 8a with the slit 8g interposed therebetween.

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8g, The leg piece 8a is deformed in the width direction, or a pin-shaped jig is inserted into the through holes 8h provided at both ends of the slit 8g to deform the through hole 8h in the width direction of the leg piece 8a. The movable contact 8 fixed to the tip of each leg 8a by shortening the length of the movable contact 8a in the longitudinal direction.
c can be moved away from the fixed contact 3a. In addition, a jig is inserted into the through hole 8h and deformed in the longitudinal direction of the leg piece 8a, the length of the leg piece 8a in the longitudinal direction is lengthened, and the movable contact 8 fixed to the tip of each leg piece 8a.
c can be moved away from the fixed contact 3a. Thereby, even if the height position of each fixed contact 3a is shifted, the contact gap G1 between the contact of one movable contact 8c and the fixed contact 3a, and the contact gap G2 between the contact of the other movable contact 8c and the fixed contact 3a. Can be adjusted equally, and the switching performance of the contacts can be stabilized. (Embodiment 5) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

In the conventional sealed contact device, the height position of each fixed contact 3a differs due to component tolerance and assembly tolerance, so that the gap between the contact between one movable contact 8c and the fixed contact 3a and the other movable contact When the gaps between the contacts 8c and the fixed contacts 3a are different from each other, there is a problem that the gap between the contacts cannot be adjusted and the switching performance of the contacts is not stable.

In the present embodiment, in order to solve the above problem, as shown in FIG. 6, a bent portion 8i is provided near the center in the longitudinal direction of each leg 8a of the movable contact 8.

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3, which are airtightly joined to the body 1, are different from each other, the bent portion 8i provided on the leg piece 8a is pressed to press the leg. The length of the piece 8a in the longitudinal direction can be increased, and the movable contact 8c can be moved in a direction approaching the fixed contact 3a.
Thereby, even if the position of each fixed contact 8c is shifted, the contact gap G between one movable contact 8c and the contact of the fixed contact 3a is set.
1 and the contact gap G2 between the other movable contact 8c and the fixed contact 3a can be adjusted equally, and the switching performance of the contacts can be stabilized. (Embodiment 6) Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by common reference numerals and description thereof is omitted, and only the features that are characteristic of this embodiment are described in detail. explain.

In the conventional sealed contact device, the positions of the fixed contacts 3a are different due to the component tolerance and the assembly tolerance, so that the gap between the one movable contact 8c and the fixed contact 3a and the other movable contact 8c When the contact gaps between the contacts of the fixed contact 3a are different from each other, there is a problem that the contact gap between the contacts cannot be adjusted, and the switching performance of the contacts is not stable.

In this embodiment, as shown in FIG. 7, a substantially cross-shaped slit 8j is provided near the center of each leg 8a of the movable contact 8 in the longitudinal and width directions.

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8j, The leg 8a is deformed in the width direction to shorten the length of the leg 8a in the longitudinal direction, and the position of the movable contact 8c fixed to the tip of each leg 8a is moved in a direction away from the fixed contacts 3a, 3a. be able to.
Also, a jig is inserted into the slit 8j and deformed in the longitudinal direction of the leg piece 8a to lengthen the length of the leg piece 8a in the longitudinal direction.
The movable contact 8c can be moved in a direction away from the fixed contact 3a. Thus, even if the height position of each fixed contact 3a is shifted, the contact gap G1 between one movable contact 8c and the fixed contact 3a is equal to the contact gap G2 between the other movable contact 8c and the fixed contact 3a. It can be adjusted, and the switching performance of the contacts can be stabilized. (Embodiment 7) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

In the first embodiment, it is necessary to stabilize the stroke and the amount of overtravel in order to stabilize the contact performance between the movable contact 8c and the fixed contact 3a. Is increased.

In the present embodiment, in order to solve the above-mentioned problem, as shown in FIG.
a and a position regulating member 10d for regulating the position of the extending portion 12b.
Is provided on the yoke 10.

The oscillating portion 12a of the armature 12 is slidably disposed on the upper surface of the coil bobbin 9b, and has one end supported by the side portion 10b of the yoke 10. The extending portion 12b extends from one end of the swinging portion 12a on the supported side to near the lower end of the coil bobbin 9b. As described above, the armature 12 is formed to have a substantially L-shaped cross section including the swinging portion 12a and the extending portion 12b. Also, the position regulating member 10
d is the side 1 of the yoke 10 near the lower end of the coil bobbin 9b.
It protrudes at a fixed interval from 0b. This interval serves as a movable range of the extending portion 12b in the stroke direction.

When the coil 9a is excited and the rocking portion 12a of the armature 12 is attracted to the fixed iron core 9c,
Since the lower end of the extending portion 12b abuts on the regulating member 10d, the position of the stroke of the armature 12 is regulated. As a result, in this embodiment, compared to the first embodiment, the armature 12 is formed in a substantially L-shape having the swinging portion 12a and the extending portion 12b, and the extending portion 12 having a dimension longer than the swinging portion 12a.
Since the stroke is regulated by the position regulating member 10b at b, the stroke can be stabilized, and the contact opening / closing performance can be stabilized.

[0061]

According to the first aspect of the present invention, there is provided a movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and the movable contact. A sealed contact device comprising: a driving unit that drives a movable contact so as to contact and separate the fixed contact; and a housing that forms an airtight space for accommodating the fixed terminal, the movable contact, and the contact driving electromagnet. In, forming a plurality of spaces separated by an insulating member in the housing,
By arranging a plurality of contact portions each including a pair of fixed contacts and a movable contact in the space, each contact portion is arranged in an insulated space, and furthermore, a movable contact having a movable contact in the space. Since it is possible to configure the child's outer space and inner space to be approximately the same size,
The space where the arc is stretched becomes equal, the breaking performance does not change and the forward and reverse mounting is possible regardless of whether the current flows in the forward or reverse direction, and between the two sets of contact parts consisting of a pair of movable contacts and fixed contacts. Also, since the insulation is provided by the insulating material, there is an effect that the insulation resistance between the contacts can be improved due to the accumulation of the scattering of the contacts after the opening and closing of the contacts.

According to a second aspect of the present invention, the movable contact has a movable contact fixed to a tip end thereof, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact are separated from each other. In the case where the mounting positions of the two fixed contacts are different from each other due to component tolerance and assembly tolerance, a jig such as a flathead screwdriver is formed in the slit. By inserting and deforming the slit in the width direction of the leg, the position of the movable contact can be moved in a direction away from the fixed contact. There is an effect that the opening / closing performance of the contacts can be stabilized by adjusting them to be equal.

According to a third aspect of the present invention, when the positions of the two fixed contacts differ from each other due to component tolerances and assembly tolerances, since the width of the leg piece in the portion provided with the slit is formed wide, For example, by inserting a jig such as a flathead screwdriver into the slit and deforming the slit in the width direction of the leg, the movable contact can be moved in a direction away from the fixed contact, and the leg is formed wide. By pressing the part, the movable contact can be moved in a direction approaching the fixed contact, thereby adjusting the contact gap between each movable contact and the fixed contact so that they are equal to each other. There is an effect that the opening and closing performance can be stabilized.

According to a fourth aspect of the present invention, since the through holes are provided at both ends in the width direction of the leg piece with the slit interposed therebetween, when the mounting positions of the two fixed contacts are respectively different due to component tolerance and assembly tolerance, For example, insert a jig such as a flathead screwdriver into the slit to deform the slit in the width direction of the leg, or insert a pin-shaped jig into the through holes provided on both sides of the slit, By deforming in the width direction, the movable contact can be moved in a direction away from the fixed contact, and by deforming the through hole in the longitudinal direction of the leg piece, the movable contact can be moved in a direction approaching the fixed contact. Accordingly, there is an effect that the contact gap between each of the movable contact and the fixed contact is adjusted to be equal to each other, so that the switching performance of the contact can be stabilized.

According to a fifth aspect of the present invention, the movable contact comprises a movable contact fixed to a tip end thereof, and a plurality of leg pieces extending in a direction in which the movable contact and the fixed contact are separated from each other. The bent portion is formed in a part of the leg piece, and when the mounting positions of the two fixed contacts are different from each other due to component tolerance and assembly tolerance, the bent portion of the leg piece is pressurized and the length of the leg piece is increased. The movable contact can be moved in the direction approaching the fixed contact by deforming in the direction, thereby adjusting the contact gap between each movable contact and the fixed contact so that they are equal to each other, and opening and closing performance of the contact Has the effect of being able to stabilize.

According to a sixth aspect of the present invention, the movable contact has a movable contact fixed to a tip end thereof, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact are separated from each other. When the mounting positions of the two fixed contacts are different due to component tolerance and assembly tolerance, a jig such as a flathead screwdriver is inserted into the slit. By deforming the slit in the width direction of the leg, the movable contact can be moved away from the fixed contact, and by deforming the slit in the longitudinal direction of the leg, the movable contact can be moved in the direction approaching the fixed contact. The movable contacts and the fixed contacts are adjusted so that the contact gaps between the movable contacts and the fixed contacts are equal to each other, and the switching performance of the contacts is reduced. There is an effect that it is possible to.

The invention according to claim 7 is provided with a metal joining member for fixing the driving portion to the housing, and the metal joining member has a mounting portion to which the driving portion is joined, so that the height of the driving portion or the height of the driving portion can be improved. After adjusting the mounting angle, the drive unit can be mounted on the mounting part of the metal member, the overtravel amount of the movable contact can be adjusted, and the opening and closing performance of the contact can be stabilized.

According to an eighth aspect of the present invention, the driving section is provided along a side surface of the contact driving electromagnet, a mounting section on which one magnetic pole section of the contact driving electromagnet is mounted, and a side surface of the contact driving electromagnet. A yoke formed in a substantially L-shaped cross-section comprising
One end of the contact driving electromagnet from one end of the swinging portion which is supported by the supporting portion and is swingably supported by the support portion in opposition to the other magnetic pole portion of the contact driving electromagnet. An armature having an approximately L-shaped cross-section comprising an extended portion extending to the vicinity of the lower end of the magnetic pole portion, and position control of the movable portion of the armature in the stroke direction near the lower end of one magnetic pole portion of the contact driving electromagnet. When the stroke and the overtravel amount are stabilized in order to stabilize the contact performance between the movable contact and the fixed contact, the armature constituted by the swing portion and the extension portion is swung. By regulating the stroke by the position regulating member with the extended portion longer than the moving portion, there is an effect that the variation in the stroke can be suppressed small and the switching performance of the contact can be stabilized.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment, wherein FIG. 1A is a plan view and FIG. 1B is a side sectional view.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a front view showing a main part of a second embodiment.

FIG. 4 is a front view showing a main part of a third embodiment.

FIG. 5 is a front view showing a main part of a fourth embodiment.

FIG. 6 is a side view showing a main part of a fifth embodiment.

FIG. 7 is a front view showing a main part of a sixth embodiment.

FIG. 8 is a side cross-sectional view showing a seventh embodiment with a part omitted.

FIG. 9 is a sectional view showing a conventional sealed contact device.

FIG. 10 is a cross-sectional view showing another conventional sealed contact device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Cover 3 Fixed terminal 4 Metal joining member 5 First insulating member 7 Second insulating member 9 Contact driving electromagnet 8 Movable contact 10 Yoke

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 7, 1998 (1998.12.
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

When one end 59a of the movable shaft 59 is driven by an electromagnet device or the like, the movable contact 5 of the movable contact 54 is moved.
4a contacts the fixed contact 53a. Thereafter, the movable shaft 59
Is further driven, the movable contact 54a becomes the fixed contact 53a.
Although not movable movable contact 54 in contact with the, by the contact pressure spring 55 movable contact holder 58 which is fixed to the movable shaft 59 and movable, the movable contact 54a and the fixed contact 53a
Contact pressure increases. At this time, the return spring 56 is compressed.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

Further, the sealed contact device illustrated in FIG. 10, first
A sealing container 61 filled with hydrogen or a gas mainly composed of hydrogen, a fixed terminal 64 provided with a fixed contact 64a, and a fixed contact 64a are formed together with the member 62 and the second member 63 to form an airtight space. A movable contact 65 having a movable contact 65a to be separated, a contact pressure spring 67 for urging the movable contact 65 in a contact contact direction, a central piece 68a, and both opposed pieces 68b, 6
A movable contact holder 68 which is formed in a substantially U-shaped cross section and has a contact pressure spring 67 in a compressed suspension state, and a first joining member 62 having one end portion 69a formed in a thick and substantially cylindrical shape.
And a fixed iron core 69 provided with a recess 69c having an inner diameter larger than the inner diameter of the insertion hole 69b at the other end, and a substantially cylindrical shape, A movable core 70 having a surface 70a facing the fixed core 69 at one end in the axial direction and a concave portion 70c at the other end, and a fixed core 69 for biasing the movable core 70 in the contact separating direction. A coil-shaped return spring 71 that is fitted into the recess 69c and whose position is regulated, and a rod-like member having one end 66a connected to the movable contact 65, and the other end 66b of the fixed iron 69 and the movable iron 70 The movable iron core 70 penetrates through the through holes 69b and 70b provided in the axial direction, respectively.
Movable shaft 66 fixed in a state protruding from concave portion 70c of
And

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

At two locations on the bottom surface of the body 1, fixed terminal holes 1a, 1a are respectively arranged at one end in the longitudinal direction of the body 1. The fixed terminals 3, 3 inserted into the fixed terminal holes 1a, 1a are formed in a substantially cylindrical shape, and the fixed contact 3 is provided at one end.
a is fixed, and a flange 3b is provided at the other end. And Thus, the fixed terminal 3 is inserted into the fixed terminal holes 1a, in a state where the other end is projected from the body 1, the flange portion 3b
The body 1 is brazed to the body 1
The fixed terminal 3 is hermetically joined.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

Further, two coil terminal holes 1b and 1b are provided at the other end of the bottom surface of the body 1, and a coil terminal 17 inserted into the coil terminal holes 1b and 1b is provided.
17 is formed in a substantially columnar shape provided with a flange portion 17a at one end. Thus, the coil terminals 17, 17 are fixed terminals 3, 3,
Similarly to the coil terminal holes 1b, 1b are inserted into the body 1
Airtightly joined.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

The armature 12 is attracted to the fixed iron core 9c when the coil 9a is excited, and is formed in a thin plate shape. The contact pressure spring 13 has one end fixed to the armature 12 and the other end fixed to the movable contact 8 via an insulating member 15. This contact pressure spring 1
Reference numeral 3 denotes a movable contact 8c in which the armature 12 is attracted to the fixed iron core 9c and is fixed to the tip of the movable contact 8;
, And then bend by being pushed further,
The contact pressure is configured to be obtained. The return spring 14 biases the movable contact 8 in a direction in which the movable contact 8c is separated from the fixed contact 3a, and extends from both ends of the fixed portion 14a having a pair of fixed holes 14c at both ends and from both ends of the fixed portion 14a. And a pair of leg pieces 14b provided. One end of the leg piece 14b is fixed to the armature 12, and the other end of the leg piece 14b is provided in fixing holes 14c provided at both ends of the fixing portion 14a, and in the side portion 10b of the yoke 10 described above. Yoke 1 fitted into the projected part 10b1
It is fixed to 0. Further, the insulating member 15 includes the contact pressure spring 13.
And the other end 8b of the movable contact 8 are fixed to each other, are formed in a substantially rectangular parallelepiped shape, and have a length dimension and a height dimension in the longitudinal direction of the position regulating member 11 provided on the upper surface of the coil bobbin 9b. Are formed to have dimensions slightly shorter than those of. Thus, the insulating member 15 is used as the position regulating member 1.
When the movable contact 8 c and the fixed contact 3 a are separated from each other, both ends of the movable contact 8 c and the fixed contact 3 a are regulated by regulating pieces 11 a provided at the tip of the position regulating member 11, thereby regulating the position of the armature 12.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction contents]

When the excitation of the coil 9a is cut off, the armature 12 separates from the fixed iron core 9c and the armature 12
The movable contact 8 fixed to the distal end of the contact pressure spring 13 and the contact pressure spring 13 via an insulating member 15 is driven, the movable contact 8c is separated from the fixed contact 3a, and the position of the insulating member 15 is regulated. The position of the armature 8 is regulated by contacting the regulating piece 11a of the member 11. In the present embodiment, two sets of contact portions composed of the pair of movable contacts 8c and the movable contacts 3a are provided in separate spaces 5a2, 5a2, respectively.
Since the contact portions are arranged inside, the space in the outer direction and the space in the inner direction of both contact portions can be configured to be substantially equal in size, the space in which the arc generated at the time of contact opening and closing becomes equal is equal, and the current can be either forward or reverse. Even if it flows in the direction of, the blocking performance hardly changes, and it is possible to mount it in the reverse direction. Further, since the insulating wall 5a1 is provided between both contact portions, after the contact is opened and closed,
Excellent insulation resistance between contacts due to accumulation of scattering of contacts. (Embodiment 2) Since the basic configuration of this embodiment is common to that of Embodiment 1, common portions are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction contents]

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 which are hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8d, The leg 8a is deformed in the width direction. This shortens the length of the leg piece 8a in the longitudinal direction,
The position of the movable contact 8c fixed to the tip of each leg 8a can be moved in a direction away from the fixed contacts 3a, 3a, and a contact gap G1 between one movable contact 8c and the fixed contact 3a, The contact can be adjusted so that the contact gap G2 between the other movable contact 8c and the fixed contact 3a becomes equal. As a result, each of the fixed contacts 3a, 3
Even if the height position a is shifted, the contact gap between the contacts can be adjusted to stabilize the switching performance of the contacts. (Embodiment 3) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction contents]

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically joined to the body 1 are respectively different, a jig such as a flathead screwdriver is inserted into the slit 8e, The leg 8a is deformed in the width direction, the length of the leg 8a in the longitudinal direction is reduced, and the movable contact 8c fixed to the tip of each leg 8a is fixed to the fixed contact 3.
a, 3a. In addition, the protrusions 8f, 8f provided on both side ends of each leg 8a are pressurized and pushed into the inside of each leg 8a, so that the length of each leg 8a in the longitudinal direction is lengthened, and movable. The contact 8c can be moved in a direction approaching the fixed contact 3a. Thus, even if the height positions of the fixed contacts 3a, 3a are shifted, the contact gap G1 between the one movable contact 8c and the fixed contact 3a, and the contact between the other movable contact 8c and the fixed contact 3a. The gap G2 can be adjusted to be equal, and the switching performance of the contacts can be stabilized.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0050

[Correction method] Change

[Correction contents]

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8g, The leg piece 8a is deformed in the width direction, or a pin-shaped jig is inserted into the through holes 8h provided at both ends of the slit 8g to deform the through hole 8h in the width direction of the leg piece 8a. The movable contact 8 fixed to the tip of each leg 8a by shortening the length of the movable contact 8a in the longitudinal direction.
c can be moved away from the fixed contact 3a. In addition, a jig is inserted into the through hole 8h and deformed in the longitudinal direction of the leg piece 8a, the length of the leg piece 8a in the longitudinal direction is lengthened, and the movable contact 8 fixed to the tip of each leg piece 8a.
c can be moved in a direction approaching the fixed contact 3a. Thereby, even if the height position of each fixed contact 3a is shifted, the contact gap G1 between the contact of one movable contact 8c and the fixed contact 3a, and the contact gap G2 between the contact of the other movable contact 8c and the fixed contact 3a. Can be adjusted equally, and the switching performance of the contacts can be stabilized. (Embodiment 5) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction contents]

Thus, according to the component tolerance and the assembly tolerance,
When the height positions of the fixed contacts 3a, 3a fixed to one end of the pair of fixed terminals 3, 3 hermetically bonded to the body 1 are different from each other, a jig such as a flathead screwdriver is inserted into the slit 8j, The leg 8a is deformed in the width direction to shorten the length of the leg 8a in the longitudinal direction, and the position of the movable contact 8c fixed to the tip of each leg 8a is moved in a direction away from the fixed contacts 3a, 3a. be able to.
Also, a jig is inserted into the slit 8j and deformed in the longitudinal direction of the leg piece 8a to lengthen the length of the leg piece 8a in the longitudinal direction.
The movable contact 8c can be moved in a direction approaching the fixed contact 3a. Thus, even if the height position of each fixed contact 3a is shifted, the contact gap G1 between one movable contact 8c and the fixed contact 3a, and the other movable contact 8c and the fixed contact 3
The contact gap G2 between "a" can be adjusted equally, and the switching performance of the contacts can be stabilized. (Embodiment 7) Since the basic configuration of this embodiment is common to that of Embodiment 1, common parts are denoted by common reference numerals and description thereof will be omitted, and only the features that are characteristic of this embodiment will be described in detail. explain.

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 12]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ritsu Yamamoto 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Inventor: Toshitoshi Hoshino 1048 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd.

Claims (8)

[Claims] 1. A movable contact having a plurality of fixed terminals having a fixed contact at one end, a plurality of movable contacts coming into contact with and separating from the fixed contacts of the plurality of fixed terminals, and bringing the movable contact into and out of the fixed contact. And a housing forming an airtight space for accommodating the fixed terminal, the movable contact and the drive unit, and a sealing contact device having an insulating member in the housing. A sealed contact device, wherein a plurality of isolated spaces are formed, and a plurality of contact portions each comprising a pair of fixed contacts and a movable contact are arranged in the spaces. 2. The movable contact has a movable contact fixed to a tip end thereof, and includes a plurality of legs along a direction in which the movable contact and the fixed contact come into contact with or separate from each other. 2. The sealed contact device according to claim 1, wherein a vertically elongated slit is formed along the direction. 3. The sealed contact device according to claim 2, wherein the width of the leg at the portion where the slit is provided is formed to be wide. 4. The sealed contact device according to claim 2, wherein through holes are provided at both ends in the width direction of the leg pieces with the slit interposed therebetween. 5. The movable contact has a movable contact fixed to a tip end thereof, and has a plurality of leg pieces along a direction in which the movable contact and the fixed contact come and go. 2. A bent portion is formed in the portion.
The sealed contact device according to claim 1. 6. The movable contact has a movable contact fixed to a tip end thereof, and includes a plurality of leg pieces along a direction in which the movable contact and the fixed contact come into contact with or separate from each other. 2. The sealed contact device according to claim 1, wherein a cross-shaped slit is formed. 7. The sealed contact device according to claim 1, further comprising a metal joining member for fixing the driving unit to the housing, wherein the metal joining member has a mounting portion to which the driving unit is joined. . 8. The contact driving electromagnet, a mounting portion on which one magnetic pole portion of the contact driving electromagnet is mounted, and a side portion disposed along a side surface of the contact driving electromagnet. A yoke formed into a substantially L-shaped cross section, and a swinging portion that is swingably supported on the side portion and opposite to the other magnetic pole portion of the contact driving electromagnet, and a side portion of the swinging portion. An armature having a substantially L-shaped cross section, comprising an extended portion extending from one end on the supported side to near the lower end of one magnetic pole portion of the contact driving electromagnet, and one magnetic pole portion of the contact driving electromagnet 2. The sealed contact device according to claim 1, further comprising: a position regulating member for regulating an amateur stroke near a lower end of the contact point.