CN110612588B - Electromagnetic relay - Google Patents
Electromagnetic relay Download PDFInfo
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- CN110612588B CN110612588B CN201880030651.1A CN201880030651A CN110612588B CN 110612588 B CN110612588 B CN 110612588B CN 201880030651 A CN201880030651 A CN 201880030651A CN 110612588 B CN110612588 B CN 110612588B
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- Prior art keywords
- pair
- contact
- fixed
- housing
- electromagnetic relay
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
- H01H2050/025—Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The electromagnetic relay is provided with: a contact housing (30) having a sealed space (70) therein; a pair of fixed terminals (31a, 31b) that are fixed to the contact housing (30) electrically independently of each other; a movable contact (32) disposed in the sealed space (70); a pair of fixed contacts (33a, 33b) provided to the pair of fixed terminals (31a, 31b), respectively; a pair of movable contacts (34a, 34b) provided to the movable contact (32), respectively; and permanent magnets (55a, 55b) disposed so as to oppose a part of the side wall of the contact housing (30). The contact housing (30) has a sealing layer (80) which is provided on the inner surface or the outer surface of the side wall capable of guiding the arc and which can seal the inflow of the outside air into the sealed space (70).
Description
Technical Field
The present invention relates to an electromagnetic relay.
Background
The electromagnetic relay disclosed in patent document 1 includes: a container having a closed space therein; a pair of fixed terminals that are electrically independently fixed to the container; and a plate-shaped movable contact which is provided in the sealed space and is movable so as to face the pair of fixed terminals and to approach or separate from the pair of fixed terminals, respectively. A fixed contact is fixed to each of front ends of the pair of fixed terminals located in the closed space. A pair of movable contacts arranged to face the pair of fixed contacts, respectively, is fixed to the movable contact.
Documents of the prior art
Patent document
Problems to be solved by the invention
However, a gas (for example, hydrogen gas) having a high arc cooling effect is generally hermetically sealed in the sealed space inside the container. In this case, if the container is damaged by an arc generated when the pair of fixed contacts and the pair of movable contacts are opened and closed, external air may flow into the sealed space, which may cause gas explosion.
Disclosure of Invention
Accordingly, an object of the present invention is to provide an electromagnetic relay capable of sealing the inflow of the external air into the sealed space due to the generation of the arc.
Means for solving the problems
A magnetic relay according to an aspect of the present invention includes: an insulating contact housing which is box-shaped and has a closed space inside; a pair of fixed terminals that are fixed to the contact housing so as to be electrically independent from each other, and that have fixed contact arrangement surfaces in the closed space, respectively; a plate-shaped movable contact which is electrically conductive, is disposed in the sealed space, has a first surface facing the fixed contact disposing surfaces of the pair of fixed terminals, and is movably disposed along an approaching/separating direction in which the first surface approaches and separates from the fixed contact disposing surfaces of the pair of fixed terminals; a pair of fixed contacts provided on the fixed contact arrangement surfaces of the pair of fixed terminals, respectively; a pair of movable contacts provided on the first surface of the movable contact, respectively, and arranged to face the pair of fixed contacts, respectively, to come into contact with the pair of fixed contacts as the movable contact approaches the pair of fixed terminals, respectively, and to be separated from the pair of fixed contacts as the movable contact separates from the pair of fixed terminals, respectively; and a permanent magnet disposed so as to face a part of a side wall extending in the approaching/separating direction of the contact housing, and configured to guide an arc generated when the pair of movable contacts contact or separate with respect to the pair of fixed contacts to the side wall of the contact housing, wherein the contact housing has a sealing layer provided on an inner surface or an outer surface of the side wall, the sealing layer being capable of guiding the arc and sealing an inflow of external air into the sealed space.
Effects of the invention
According to the electromagnetic relay of the above aspect, the contact housing has the sealing layer provided on the inner surface or the outer surface of the side wall capable of guiding the arc and capable of sealing the inflow of the outside air into the sealed space. With this sealing layer, even if the side wall of the contact housing is damaged by the generation of an arc, for example, the inflow of the outside air into the sealed space can be sealed.
Drawings
Fig. 1 is a perspective view of an electromagnetic relay according to an embodiment of the present invention;
FIG. 2 is a sectional view taken along line II-II of FIG. 1;
fig. 3 is a plan view of a state where a housing of the electromagnetic relay of fig. 1 is removed;
fig. 4 is a side view of a state in which a housing of the electromagnetic relay of fig. 1 is removed;
fig. 5 is a side view showing a modification of the electromagnetic relay of fig. 1;
fig. 6 is a plan view showing a modification of the contact case and the permanent magnet of the electromagnetic relay of fig. 1;
fig. 7 is a cross-sectional view taken along line VI-VI in fig. 1 showing a modification of the electromagnetic relay in fig. 1.
Detailed Description
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, terms indicating specific directions or positions (for example, terms including "upper", "lower", "right" and "left") are used as necessary, but the terms are used for easy understanding of the disclosure with reference to the drawings, and the technical scope of the present invention is not limited by the meanings of the terms. The following description is merely exemplary in nature and is not intended to limit the present invention, its applications, or uses. The drawings are schematic, and the ratio of the dimensions and the like do not necessarily match the actual dimensions.
As shown in fig. 1, an electromagnetic relay 100 according to an embodiment of the present invention includes an insulating housing 1 and a pair of fixed terminals 31a and 31b fixed to the housing 1. As shown in fig. 2, the electromagnetic relay 100 is provided symmetrically with respect to a plane CP extending in a direction orthogonal to the arrangement direction of the pair of fixed terminals 31a and 31b through the center of the pair of fixed terminals 31a and 31 b.
As shown in fig. 2, a substantially rectangular parallelepiped contact housing 30 is provided inside the housing 1. A sealed space 70 is formed inside the contact housing 30, and the electromagnetic relay 100 includes a conductive plate-shaped movable contact 32 provided so as to face the pair of fixed terminals 31a and 31b in the sealed space 70. The electromagnetic relay 100 further includes a pair of fixed contacts 33a and 33b provided in the pair of fixed terminals 31a and 31b in the sealed space 70, and a pair of movable contacts 34a and 34b provided in the movable contact 32 so as to face the pair of fixed contacts 33a and 33b, respectively.
As shown in fig. 3, the electromagnetic relay 100 includes permanent magnets arranged to face portions of the side walls 303 and 304 of the contact housing 30 extending in an approaching/separating direction (i.e., a direction in which the sheet of fig. 3 penetrates) in which the pair of movable contacts 34a and 34b contact and separate with respect to the pair of fixed contacts 33a and 33 b. In this embodiment, a pair of permanent magnets 55a and 55b is provided, and the permanent magnets 55a and 55b are fixed to the cover 20.
The arrangement direction (the left-right direction in fig. 2) of the pair of fixed terminals 31a and 31b is defined as the X direction, and the height direction (the up-down direction in fig. 2) of the electromagnetic relay 100 is defined as the Z direction. The direction orthogonal to the X, Z direction is referred to as the Y direction.
As shown in fig. 1, the housing 1 is composed of a case 10 and a cover 20.
As shown in fig. 1, the casing 10 has a substantially rectangular parallelepiped shape and a hollow box shape, and has a rectangular opening 11 on one of the surfaces facing in the longitudinal direction.
As shown in fig. 1, the cover 20 has a rectangular shape and is attached so as to cover the opening 11 of the housing 10. The cover 20 is provided with two circular terminal holes 21 arranged at intervals in the longitudinal direction thereof, and a wall portion 22 arranged in the middle of the terminal holes 21 and extending along the plane CP.
As shown in fig. 2, the contact housing 30 is composed of a ceramic housing 51 disposed adjacent to the cover 20 in the housing 1, a flange 52 extending from an end portion of the ceramic housing 51 on the bottom side (i.e., the Z-direction lower side) of the housing 10 toward the bottom of the housing 10 (i.e., downward in the Z-direction), a first yoke 53 disposed on an end portion of the flange 52 on the bottom side of the housing 10, and a bottomed cylindrical body 54 extending from the vicinity of the center portion of the first yoke 53 toward the bottom of the housing 10. The ceramic case 51, the flange 52, and the first yoke 53 are integrated, and the first yoke 53 and the bottomed cylinder 54 are hermetically joined. Thereby, a sealed space 70 is formed inside the contact housing 30. The sealed space 70 is filled with a gas (for example, hydrogen or nitrogen) having a high arc cooling effect.
The ceramic case 51 is an insulating substantially rectangular parallelepiped and has a hollow box shape. A pair of terminal holes 511 arranged to face the terminal holes 21 of the cover 20 are provided on the surface of the ceramic case 51 facing the cover 20. The pair of fixed terminals 31a and 31b are inserted into the terminal holes 511 and fixed thereto by soldering, for example. The surface of the ceramic case 51 facing the bottom of the case 10 (i.e., the surface on the lower side in the Z direction) is an opening surface provided with an opening.
The flange 52 has a cylindrical shape (e.g., a substantially square cylindrical shape) and extends from an end edge portion of the opening surface of the ceramic case 51 toward the bottom of the case 10 (i.e., downward in the Z direction). The surface of the flange 52 facing the cover 20 and the surface facing the bottom of the case 10 are both open surfaces having openings.
Bottomed cylinder 54 has a circular or square shape, and extends from near the center of the plate surface of first yoke 53 facing the bottom of case 10 toward the bottom of case 10. A flange is provided at the end of the bottomed cylinder 54 on the first yoke 53 side, and covers the hole 531 of the first yoke 53. A movable shaft 35 having a substantially cylindrical bar shape, a fixed iron core 57 fixed to the first magnetic yoke 53, and a movable iron core 58 fixed to a bottom-side front end portion (i.e., a Z-direction lower end portion) of the housing 10 of the movable shaft 35 are housed in the bottomed cylindrical body 54. A return spring 59 that biases the movable core 58 toward the bottom of the housing 10 (i.e., downward in the Z direction) is provided between the fixed core 57 and the movable core 58.
As shown in fig. 2, the pair of fixed terminals 31a and 31b each have a substantially cylindrical shape and are electrically independently fixed to a ceramic case 51 constituting the housing 1. The pair of fixed terminals 31a and 31b are arranged with a gap therebetween along the arrangement direction (i.e., X direction), and a part of them is located in the sealed space 70.
The fixed contact arrangement surfaces 311 extending along the XY plane are provided on the end surfaces of the pair of fixed terminals 31a and 31b on the side of the sealed space 70 (i.e., the end surfaces of the ends on the lower side in the Z direction). The fixed contact arrangement surfaces 311 are provided with fixed contacts 33a and 33b, respectively. The fixed contacts 33a and 33b may be formed integrally with the corresponding fixed terminals 31a and 31b, or may be formed separately from the corresponding fixed terminals 31a and 31 b.
As shown in fig. 2, the movable contact 32 has a first surface 321 extending along an XY plane facing the pair of fixed terminals 31a, 31b, and a second surface 322 extending along the XY plane opposite to the first surface 321 with respect to the Z direction.
A pair of movable contacts 34a and 34b are provided on the first surface 321 of the movable contact 32. That is, the first surface 321 is a movable contact arrangement surface, and the pair of movable contacts 34a and 34b are electrically connected to each other through the movable contact 32. The pair of movable contacts 34a and 34b are disposed to face the pair of fixed contacts 33a and 33b, respectively. The movable contacts 34a and 34b may be formed integrally with the movable contact 32, or may be formed separately from the movable contact 32.
As shown in fig. 2, a coil spring 50 that extends and contracts along the movable shaft 35 is provided on the bottom side (i.e., on the lower side in the Z direction) of the housing 10 of the movable contact 32.
As shown in fig. 2, the electromagnet portion 40 is composed of an insulating reel 41, a coil 42 wound around the reel 41, and a coil terminal (not shown) fixed to the reel 41. The electromagnet portion 40 applies a voltage to the coil 42 to move the movable shaft 35 up and down in the Z direction, thereby moving the movable contact 32 closer to or away from the fixed contact arrangement surfaces 311 of the pair of fixed terminals 31a and 31 b.
Further, a second yoke 44 having a substantially U-shape in cross section orthogonal to the plane CP is provided inside the housing 1. The second yoke 44 is connected to the first yoke 53, and is disposed inside the housing 10 so as to surround the electromagnet portion 40 together with the first yoke 53.
As shown in fig. 3, the pair of permanent magnets 55 are disposed so as to respectively face a pair of side walls of the contact housing 30 extending in the arrangement direction (i.e., the X direction) of the pair of fixed terminals 31a and 31b, and guide an arc generated when the pair of movable contacts 33a and 33b contact or separate from the pair of fixed contacts 31a and 31b to the side walls of the contact housing 30.
Specifically, the pair of fixed contacts 33a and 33b and the pair of movable contacts 34a and 34b are in contact, a current flows from the fixed terminal 31b on the right side in fig. 3 to the fixed terminal 31a on the left side in fig. 3, and a magnetic flux extends from the permanent magnet 55a on the lower side in fig. 3 to the permanent magnet 55b on the upper side in fig. 3. In this case, the arc generated between the right fixed contact 33b and the corresponding movable contact 34b is guided to the right side wall 301 in fig. 3 while approaching the upper permanent magnet 55b by the lorentz force, and the arc generated between the left fixed contact 33a and the corresponding movable contact 34a is guided to the left side wall 302 in fig. 3 while approaching the lower permanent magnet 55a by the lorentz force.
Next, the contact housing 30 will be described in more detail with reference to fig. 3 and 4. In fig. 3 and 4, the housing 1 is omitted.
As shown in fig. 3 and 4, the contact housing 30 includes: a sealing layer 80 provided on an outer surface of a side wall extending in a direction of approaching and separating the pair of movable contacts 34a and 34b with respect to the pair of fixed contacts 33a and 33b (i.e., a direction in which the sheet of fig. 3 penetrates), the sealing layer being capable of sealing an inflow of external air into the sealed space 70; and a reinforcement layer 81 provided around the sealing layer 80. For example, the sealing layer 80 and the reinforcing layer 81 are made of a conductive or insulating tape (e.g., a ceramic tape or a resin tape).
Specifically, the sealing layer 80 is provided at a portion corresponding to the inner wall surface of the sealed space 70 on the outer surface of the side walls 301 and 302 of the contact housing 30, which can guide the arc generated when the pair of movable contacts 34a and 34b contact or separate from the pair of fixed contacts 33a and 33 b. The reinforcing layer 81 is connected to the respective sealant layers 80 provided on the outer surfaces of the side walls 301 and 302. That is, the sealing layer 80 and the reinforcing layer 81 are integrally provided over the entire outer surface of the side wall of the contact housing 30.
In the electromagnetic relay 100 described above, the contact housing 30 has the sealing layer 80 that is provided on the outer surface of the side walls 301 and 302 that can guide the arc and can seal the inflow of the outside air into the enclosed space 70. With this sealing layer 80, even if the side walls 301 and 302 of the contact housing 30 are damaged by, for example, the generation of an arc, the inflow of the outside air into the sealed space 70 can be sealed.
In addition, the contact housing 30 is provided around the sealing layer 80, and is provided with a reinforcing layer 81 that reinforces the sealing of the sealing layer 80. For example, even if cracks exceeding the sealing layer 80 enter the side walls 301 and 302 of the contact housing 30 due to the generation of an arc, the reinforcing layer 81 can seal the inflow of the external air into the sealed space 70 against the cracks exceeding the sealing layer 80.
The sealing layer 80 and the reinforcing layer 81 are integrally provided over the entire circumference of the side wall of the contact housing 30. This can more reliably seal the inflow of the outside air into the sealed space 70.
In addition, the sealing layer 80 has a layer thickness thicker (larger) than the reinforcing layer 81. This can seal the inflow of the outside air into the sealed space 70, and can reduce the manufacturing cost.
In the present invention, the reinforcing layer 81 may be omitted as long as the sealing layer 80 capable of sealing the inflow of the outside air into the sealed space 70 is provided on the side walls 301 and 302 of the contact housing 30 capable of guiding the arc, for example, as shown in fig. 5.
The sealing layer 80 and the reinforcing layer 81 are not limited to the outer surfaces of the side walls 301 and 302 of the contact housing 30 that can guide the arc and facing the housing 1, and may be provided on the inner surfaces of the closed space 70.
The sealing layer 80 and the reinforcing layer 81 are not limited to being formed integrally, and may be formed separately.
The sealing layer 80 and the reinforcing layer 81 may have the same layer thickness.
The sealing layer 80 and the reinforcing layer 81 are not limited to the conductive or insulating tape, and may be formed of a thermoplastic resin such as urethane.
The contact housing 30 is not limited to a substantially rectangular parallelepiped shape, and may be a cylindrical shape, for example, as shown in fig. 6. The contact housing 30 is not limited to the case of being constituted by the ceramic housing 51, the flange 52, the first yoke 53, and the bottomed cylinder 54, and may have any configuration in which the sealed space 70 can be formed inside. For example, instead of the ceramic case 51, a case made of a heat-sealing resin may be used. That is, the contact housing 30 may be configured in any configuration, shape, and size depending on the design of the electromagnetic relay 100 and the like.
The permanent magnets 55a and 55b are not limited to being disposed so as to face the pair of side walls of the contact housing 30 extending in the arrangement direction of the pair of fixed terminals 31a and 31 b. For example, the contact housing 30 may be disposed so as to face a pair of side walls (positions a and B shown in fig. 6) extending in a direction (e.g., orthogonal direction) intersecting the arrangement direction of the pair of fixed terminals 31a and 31B. The permanent magnets 55a and 55b may be provided at least one, and may be disposed at any position a to D shown in fig. 6, for example, facing a part of the side wall of the contact housing 30. In addition, if the number and arrangement of the permanent magnets are changed, the position of the side wall of the contact housing 30 that guides the arc is also changed.
The permanent magnets 55a and 55b are not limited to being disposed outside the contact housing 30, and may be disposed in the sealed space 70 inside the contact housing 30 or in the side wall of the contact housing 30, for example.
As shown in fig. 7, the electromagnetic relay 100 further includes a sealing portion 90 that covers an outer surface of the side wall of the contact housing 30 and is capable of sealing an inflow of external air into the sealed space 70. This can more reliably seal the inflow of the outside air into the sealed space 70. The sealing portion 90 may be made of a thermoplastic resin such as urethane, for example.
While various embodiments of the present invention have been described in detail with reference to the accompanying drawings, various embodiments of the present invention will be described last. In the following description, reference numerals are given to the drawings as an example.
An electromagnetic relay 100 according to a first aspect of the present invention includes:
an insulating contact housing 30 having a box shape and a sealed space 70 inside;
a pair of fixed terminals 31a and 31b that are electrically independently fixed to the contact housing 30 and have fixed contact arrangement surfaces 311 in the sealed space 70;
a plate-shaped movable contact 32 that is electrically conductive, is disposed in the sealed space 70, has a first surface 321 that faces the fixed contact arrangement surfaces 311 of the pair of fixed terminals 31a and 31b, and is movably disposed along an approaching/separating direction in which the first surface 321 approaches and separates from the fixed contact arrangement surfaces 311 of the pair of fixed terminals 31a and 31 b;
a pair of fixed contacts 33a and 33b provided on the fixed contact arrangement surfaces 311 of the pair of fixed terminals 31a and 31b, respectively;
a pair of movable contacts 34a and 34b provided on the first surface 321 of the movable contact 32, respectively, and arranged to face the pair of fixed contacts 33a and 33b, respectively, and to come into contact with the pair of fixed contacts 33a and 33b as the movable contact 32 approaches the pair of fixed terminals 31a and 31b, respectively, and to be separated from the pair of fixed contacts 33a and 33b as the movable contact 32 separates from the pair of fixed terminals 31a and 31b, respectively;
the contact housing 30 has a sealing layer 80 provided on an inner surface or an outer surface of the side walls 301, 302, 303, 304 that can guide the arc, and capable of sealing an inflow of external air into the sealed space 70.
According to the electromagnetic relay 100 of the first aspect, even if the side walls 301, 302, 303, and 304 of the contact case 30 are damaged by the generation of an arc, for example, the inflow of the external air into the sealed space 70 can be sealed.
In the electromagnetic relay 100 according to the second aspect of the present invention, the contact housing 30 includes a reinforcing layer 81 which is connected to the sealing layer 80 to reinforce the sealing of the sealing layer 80.
According to the electromagnetic relay 100 of the second aspect, even if cracks exceeding the sealing layer 80 enter the side walls 301, 302, 303, 304 of the contact housing 30 due to the generation of an arc, for example, the inflow of the external air into the sealed space 70 can be sealed.
In the electromagnetic relay 100 according to the third aspect of the present invention, the sealing layer 80 and the reinforcing layer 81 are integrally provided over the entire circumference of the side walls 301, 302, 303, and 304 of the contact housing 30.
According to the electromagnetic relay 100 of the third aspect, the inflow of the outside air into the sealed space 70 can be more reliably sealed.
In the electromagnetic relay 100 according to the fourth aspect of the present invention, the sealing layer 80 has a layer thickness larger than the reinforcing layer 81.
According to the electromagnetic relay 100 of the fourth aspect, the inflow of the outside air into the sealed space 70 can be sealed, and the manufacturing cost can be reduced.
The electromagnetic relay 100 according to the fifth aspect of the present invention further includes a sealing portion 90 that covers the outer surfaces of the side walls 301, 302, 303, and 304 and is capable of sealing the inflow of the outside air into the sealed space 70.
According to the electromagnetic relay 100 of the fifth aspect, the inflow of the outside air into the sealed space 70 can be more reliably sealed.
In the electromagnetic relay 100 according to the sixth aspect of the present invention, the sealing layer 80 is formed of a conductive or insulating tape.
According to the electromagnetic relay 100 of the sixth aspect, even if the side walls 301, 302, 303, and 304 of the contact case 30 are damaged by the generation of an arc, for example, the inflow of the external air into the sealed space 70 can be sealed.
In addition, by appropriately combining any of the various embodiments or modifications described above, the effects each has can be achieved. In addition, combinations of the embodiments or examples or combinations of the embodiments and examples can be made, and combinations of features in different embodiments or examples can also be made.
The present invention has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, but it should be apparent to those skilled in the art that various changes and modifications can be made. Such variations and modifications are to be understood as included within the scope of the appended claims without departing from the scope of the invention.
Industrial applicability
The electromagnetic relay of the present invention can be applied to, for example, an automobile.
Description of the symbols
1 outer cover
10 casing
11 opening part
20 cover
21 terminal hole
22 wall part
30 contact shell
301. 302, 303, 304 side wall
31a, 31b fixed terminal
311 fixed contact arrangement surface
32 movable contact
321 first side
322 second side
33a, 33b fixed contact
34a, 34b movable contact
35 Movable shaft
40 electromagnet part
41 reel
42 coil
44 second yoke
50 helical spring
51 ceramic shell
511 terminal hole
52 Flange
53 first yoke
531 hole part
54 bottom cylinder
55a, 55b permanent magnet
57 fixed iron core
58 movable iron core
59 return spring
70 closed space
80 sealing layer
81 reinforcing layer
90 sealing part
100 electromagnetic relay
Claims (6)
1. An electromagnetic relay is provided with:
an insulating contact housing which is box-shaped and has a closed space inside;
a pair of fixed terminals that are fixed to the contact housing so as to be electrically independent from each other, and that have fixed contact arrangement surfaces in the closed space, respectively;
a plate-shaped movable contact which is electrically conductive, is disposed in the sealed space, has a first surface facing the fixed contact disposing surfaces of the pair of fixed terminals, and is movably disposed along an approaching/separating direction in which the first surface approaches and separates from the fixed contact disposing surfaces of the pair of fixed terminals;
a pair of fixed contacts provided on the fixed contact arrangement surfaces of the pair of fixed terminals, respectively;
a pair of movable contacts provided on the first surface of the movable contact, respectively, and arranged to face the pair of fixed contacts, respectively, and to come into contact with the pair of fixed contacts as the movable contact approaches the pair of fixed terminals, respectively, and to be separated from the pair of fixed contacts as the movable contact separates from the pair of fixed terminals, respectively;
a permanent magnet disposed so as to oppose a part of a side wall extending in the approaching and separating direction of the contact housing and capable of guiding an arc generated when the pair of movable contacts contact or separate with respect to the pair of fixed contacts to the side wall of the contact housing,
the contact housing has a sealing layer provided on an inner surface or an outer surface of the sidewall, which can guide the arc, and capable of sealing an inflow of external gas into the enclosed space,
the electromagnetic relay further includes:
a housing in which the contact housing is disposed;
and a sealing part which is provided inside the housing, covers an outer surface of the side wall, and can seal an inflow of external air into the sealed space.
2. The electromagnetic relay of claim 1 wherein,
the contact housing has a reinforcement layer connected to the sealing layer to reinforce the sealing of the sealing layer.
3. The electromagnetic relay of claim 2 wherein,
the sealing layer and the reinforcing layer are integrated and provided over the entire circumference of the side wall of the contact housing.
4. The electromagnetic relay of claim 2 wherein,
the sealing layer has a layer thickness that is thicker than the reinforcement layer.
5. The electromagnetic relay according to any one of claims 1 to 4, wherein,
the sealing layer is made of a conductive or insulating tape.
6. The electromagnetic relay according to any one of claims 1 to 4, wherein,
the sealing portion is made of a thermoplastic resin.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-131336 | 2017-07-04 | ||
| JP2017131336A JP6926738B2 (en) | 2017-07-04 | 2017-07-04 | Electromagnetic relay |
| PCT/JP2018/025090 WO2019009253A1 (en) | 2017-07-04 | 2018-07-02 | Electromagnetic relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110612588A CN110612588A (en) | 2019-12-24 |
| CN110612588B true CN110612588B (en) | 2022-03-22 |
Family
ID=64950847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880030651.1A Active CN110612588B (en) | 2017-07-04 | 2018-07-02 | Electromagnetic relay |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6926738B2 (en) |
| CN (1) | CN110612588B (en) |
| DE (1) | DE112018003479T5 (en) |
| WO (1) | WO2019009253A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114641842B (en) * | 2020-03-12 | 2024-04-16 | 富士电机机器制御株式会社 | Electromagnetic contactor |
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|---|---|---|---|---|
| JP2002245916A (en) * | 2001-02-15 | 2002-08-30 | Denso Corp | Electromagnetic relay |
| CN103339705A (en) * | 2011-03-14 | 2013-10-02 | 欧姆龙株式会社 | Electromagnetic relay |
| CN104205283A (en) * | 2012-04-13 | 2014-12-10 | 富士电机机器制御株式会社 | Switch |
| JP2015056230A (en) * | 2013-09-10 | 2015-03-23 | パナソニック株式会社 | Sealed contact device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6093253U (en) * | 1983-11-30 | 1985-06-25 | オムロン株式会社 | relay |
| KR20150016487A (en) * | 2012-06-08 | 2015-02-12 | 후지 덴키 기기세이교 가부시끼가이샤 | Electromagnetic contactor |
-
2017
- 2017-07-04 JP JP2017131336A patent/JP6926738B2/en active Active
-
2018
- 2018-07-02 WO PCT/JP2018/025090 patent/WO2019009253A1/en active Application Filing
- 2018-07-02 DE DE112018003479.8T patent/DE112018003479T5/en active Pending
- 2018-07-02 CN CN201880030651.1A patent/CN110612588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002245916A (en) * | 2001-02-15 | 2002-08-30 | Denso Corp | Electromagnetic relay |
| CN103339705A (en) * | 2011-03-14 | 2013-10-02 | 欧姆龙株式会社 | Electromagnetic relay |
| CN104205283A (en) * | 2012-04-13 | 2014-12-10 | 富士电机机器制御株式会社 | Switch |
| JP2015056230A (en) * | 2013-09-10 | 2015-03-23 | パナソニック株式会社 | Sealed contact device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6926738B2 (en) | 2021-08-25 |
| DE112018003479T5 (en) | 2020-03-19 |
| WO2019009253A1 (en) | 2019-01-10 |
| CN110612588A (en) | 2019-12-24 |
| JP2019016462A (en) | 2019-01-31 |
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