CN216119978U

CN216119978U - Contact relay

Info

Publication number: CN216119978U
Application number: CN202122251090.XU
Authority: CN
Inventors: 唐俊平; 王亚宾; 黄嘉健; 秦祖超
Original assignee: Sanyou Corp Ltd
Current assignee: Sanyou Corp Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-03-22
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a contact relay, which comprises a shell, two stationary contacts, a first magnetic component and two second magnetic components, wherein the shell comprises a top wall and two side walls connected to the top wall, the two stationary contacts are arranged on the top wall at intervals, the first magnetic component is arranged on the top wall, and the two second magnetic components are respectively arranged on the two side walls. According to the contact relay, the two second magnetic parts on the two side walls generate magnetic fields on the two sides, the magnetic fields are used for blowing electric arcs generated at the static contact points to the connecting line of the two static contact points, the first magnetic parts on the top wall can transition magnetic lines generated by the second magnetic parts on the two side walls, so that the magnetic field strength of the contact area of the static contact points and the movable contact points is increased, and the arc extinguishing effect is improved.

Description

Contact relay

Technical Field

The utility model relates to the technical field of relays, in particular to a contact relay.

Background

In order to solve the problem that the electric arcs generated when two movable contacts and two fixed contacts of the contact relay are used in a charged state can interfere with each other, so that the contact relay is easy to have accidents such as short circuit, in the application document with the application number of '202021905057.3', the magnets are arranged on the two opposite side walls of the upper shell, and generate a magnetic field to blow the electric arcs generated when the movable contacts and the fixed contacts are separated, so that the direction of the electric arcs is changed, and the arc extinguishing effect is achieved. However, this method has a problem that the magnetic flux between both side walls is weak and the arc extinguishing effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present invention provides a contact relay, so as to solve the problem of poor arc extinguishing effect of the existing contact relay.

The technical scheme adopted by the utility model for solving the problems is as follows:

a contact relay, comprising:

the shell comprises a top wall and two side walls connected to the top wall;

the two static contacts are arranged on the top wall at intervals;

a first magnetic component disposed on the top wall; and

and the two second magnetic parts are respectively arranged on the two side walls.

Further, the first magnetic component is located between the two stationary contacts.

Further, the top wall extends inwards to form an annular wall with a first mounting groove, and the first magnetic component is mounted in the first mounting groove.

Further, the two second magnetic components are symmetrically arranged about a perpendicular bisector of a connecting line of the two fixed contacts.

Further, the two second magnetic components are positioned on an extension line of a connecting line of the two fixed contacts.

Furthermore, the two second magnetic components are arranged obliquely to an extension line of a connecting line of the two stationary contacts.

Furthermore, the two second magnetic components are arranged perpendicular to an extension line of a connecting line of the two stationary contacts.

Further, the second magnetic part comprises a first sub-magnetic part and a second sub-magnetic part, the second sub-magnetic part is arranged on one side, facing the side wall, of the first sub-magnetic part, and the thickness of the second sub-magnetic part is smaller than that of the first sub-magnetic part and the width of the second sub-magnetic part is larger than that of the first sub-magnetic part.

Further, the second magnetic part further comprises a magnetic conduction piece, and the magnetic conduction piece is arranged on one side, facing the side wall, of the second sub-magnetic part.

Furthermore, the top wall extends inwards to form a blocking wall, a second installation groove is formed by the blocking wall and the side wall in an enclosing mode, and the second magnetic component is installed in the second installation groove.

In summary, the contact relay provided by the utility model has the following technical effects:

the contact relay comprises a shell, two stationary contacts, a first magnetic component and two second magnetic components, wherein the shell comprises a top wall and two side walls connected to the top wall, the two stationary contacts are arranged on the top wall at intervals, the first magnetic component is arranged on the top wall, and the two second magnetic components are respectively arranged on the two side walls. According to the contact relay, the two second magnetic parts on the two side walls generate magnetic fields on the two sides, the magnetic fields are used for blowing electric arcs generated at the static contact points to the connecting line of the two static contact points, the first magnetic parts on the top wall can transition magnetic lines generated by the second magnetic parts on the two side walls, so that the magnetic field strength of the contact area of the static contact points and the movable contact points is increased, and the arc extinguishing effect is improved.

Drawings

Fig. 1 is a schematic structural view of a contact relay according to an embodiment of the present invention;

fig. 2 is a sectional view of a contact relay of an embodiment of the present invention;

fig. 3 is an exploded view of a part of the structure of a contact relay according to an embodiment of the present invention;

fig. 4 is a magnetic field line distribution diagram around the second magnetic member of the contact relay according to the embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. a housing; 11. an upper housing; 111. a top wall; 112. a side wall; 113. an annular wall; 114. a first mounting groove; 115. a retaining wall; 116. a second mounting groove; 12. a lower housing; 2. a stationary contact; 3. a first magnetic member; 4. a second magnetic member; 41. a first sub-magnetic member; 42. a second sub-magnetic member; 43. a magnetic conduction member.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 4, the utility model discloses a contact relay, which includes a housing 1, two stationary contacts 2, a first magnetic component 3 and two second magnetic components 4, wherein the housing 1 includes a top wall 111 and two side walls 112 connected to the top wall 111, the two stationary contacts 2 are arranged on the top wall 111 at intervals, the first magnetic component 3 is arranged on the top wall 111, and the two second magnetic components 4 are respectively arranged on the two side walls 112.

In the contact relay of the scheme, the two second magnetic components 4 on the two side walls 112 generate two side magnetic fields for blowing the electric arc generated at the position of the fixed contact 2 to the connection line of the two fixed contacts 2, and the first magnetic component 3 on the top wall 111 can transit the magnetic lines of force generated by the second magnetic components 4 on the two side walls 112, so that the magnetic field strength of the contact area of the fixed contact 2 and the movable contact is increased, and the arc extinguishing effect is improved.

In some embodiments, the housing 1 includes an upper housing 111 and a lower housing 121 connected together, and the top wall 111 and the two sidewalls 112 are located on the upper housing 111. It is understood that in other preferred embodiments, the housing 1 may also include a left housing 1 and a right housing 1 that are connected in a butt joint manner, and the top wall 111 is partially located on the left housing 1, and the other portion is located on the right housing 1, and the two side walls 112 are respectively located on the left housing 1 and the right housing 1, which is not limited herein.

In some embodiments, the first magnetic part 3 is located between the two stationary contacts 2. The arrangement is such that the first magnetic member 3 is located at the middle position between the two second magnetic members 4, so that the first magnetic member 3 can uniformly transition the magnetic lines of force of the second magnetic members 4 on the two side walls 112.

The first magnetic component 3 may be one or a plurality of magnetic components arranged at intervals, and is not limited herein, and the first magnetic component 3 is taken as an example in the present embodiment.

In some embodiments, in order to fix the first magnetic member 3 on the housing 1, the top wall 111 extends inward to form an annular wall 113 having a first mounting groove 114, and the first magnetic member 3 is mounted in the first mounting groove 114, so as to fix the first magnetic member 3 on the housing 1. In addition, since the first magnetic member 3 is installed in the first installation groove 114 formed by the surrounding of the annular wall 113, the first magnetic member 3 and the stationary contact 2 can be separated from each other, so as to prevent the magnetic field intensity of the first magnetic member 3 from being reduced due to the high temperature generated when the arc is splashed onto the first magnetic member 3.

In some embodiments, the two second magnetic members 4 are symmetrically disposed about a perpendicular bisector of the line connecting the two stationary contacts 2. With the arrangement, under the combined action of the two second magnetic parts 4, the magnetic fields generated by the two second magnetic parts 4 can blow the electric arcs generated at the two stationary contacts 2 to both sides.

Further, the symmetrical arrangement of the two second magnetic components 4 with respect to the perpendicular bisector of the line connecting the two stationary contacts 2 may specifically include the following several alternative embodiments:

as a first alternative embodiment, the two second magnetic members 4 are located on an extension of the line connecting the two stationary contacts 2, that is, the two second magnetic members 4 and the two stationary contacts 2 are located on the same line.

As a second alternative embodiment, the two second magnetic members 4 are disposed obliquely to the extension line of the connecting line of the two stationary contacts 2, that is, the two second magnetic members 4 are respectively disposed at two sides of the connecting line of the two stationary contacts 2 and are oblique to the extension line of the connecting line of the two stationary contacts 2. With this arrangement, the two second magnetic members 4 can guide the arc to blow into the housing 1 on the maximum path allowed, that is, the housing 1 can be made as small as possible while satisfying the arc extinguishing effect, thereby facilitating the miniaturization design of the contact relay. In addition, by adopting the design mode, the static contact can be used no matter whether the static contact is polarized (positive and negative), so that the condition of short circuit caused by wrong electric arc adhesion in the electrifying direction of the static contact can be avoided.

As a third alternative embodiment, the two second magnetic members 4 are arranged perpendicular to the extension line of the connecting line of the two stationary contacts 2, that is, the two second magnetic members 4 are respectively located at two sides of the connecting line of the two stationary contacts 2 and perpendicular to the extension line of the connecting line of the two stationary contacts 2.

The present embodiment is exemplified by the case where the two second magnetic members 4 are located on the extension of the line connecting the two stationary contacts 2.

As shown in fig. 4, in some embodiments, the second magnetic component 4 includes a first sub-magnetic component 41 and a second sub-magnetic component 42, the second sub-magnetic component 42 is disposed on a side of the first sub-magnetic component 41 facing the stationary contact 2, and the second sub-magnetic component 42 has a smaller thickness than the first sub-magnetic component 41 and a larger width than the first sub-magnetic component 41. With this arrangement, since the width of the second sub-magnetic member 42 is greater than the width of the first sub-magnetic member 41, the second sub-magnetic member 42 can increase the magnetic flux area toward the stationary contact 2, so that the overall magnetic field around the second magnetic member 4 is widened to achieve a longer arc-blowing distance, thereby achieving a better arc-blowing effect.

Preferably, the second sub-magnetic member 42 and the first sub-magnetic member 41 are integrally formed (not shown), so that the first sub-magnetic member 41 and the second sub-magnetic member 42 can be integrally formed during processing, thereby facilitating the simplification of the manufacturing process of the second magnetic member 4.

Optionally, the first sub-magnetic part 41 and the second sub-magnetic part 42 are both magnetic steel. It is to be understood that, in other preferred embodiments, the first sub-magnetic member 41 and the second sub-magnetic member 42 may also be magnetic members made of a magnetic material such as a magnet, and are not limited herein.

Further, the second magnetic component 4 further includes a magnetic conductive member 43, and the magnetic conductive member 43 is disposed on a side of the second sub-magnetic member 42 facing the side wall 112. The design mode that sets up magnetic conduction piece 43 is adopted, and the magnetic domain of magnetic conduction piece 43 will be arranged along the magnetic field line under the effect in magnetic field, can promote the magnetic field intensity of second magnetic part 4, can increase the magnetic flux of second magnetic part 4 for the speed of electric arc, with the realization arc extinction as fast as possible, thereby improve the arc blowing effect of this contact relay.

The magnetic conductive member 43 is an iron block, and because the cost of the iron block is far lower than that of the magnetic steel, the volume of the iron block, which is usually used as the magnetic conductive member 43, is larger than that of the magnetic steel itself of the first sub-magnetic member 41 and the second sub-magnetic member 42 due to cost.

In some embodiments, in order to fix the second magnetic element 4 on the housing 1, the top wall 111 extends inward to form a blocking wall 115, the blocking wall 115 and the side wall 112 enclose a second mounting groove 116 therebetween, and the second magnetic element 4 is mounted in the second mounting groove 116, so as to fix the second magnetic element 4 on the housing 1. In addition, since the second magnetic member 4 is installed in the second installation groove 116 formed by the blocking wall 115 and the side wall 112, the second magnetic member 4 and the stationary contact 2 can be separated from each other, so as to avoid the decrease of the magnetic field strength of the second magnetic member 4 caused by the high temperature generated when the arc splashes on the second magnetic member 4.

The utility model provides a contact relay, which comprises a shell 1, two stationary contacts 2, a first magnetic component 3 and two second magnetic components 4, wherein the shell 1 comprises a top wall 111 and two side walls 112 connected to the top wall 111, the two stationary contacts 2 are arranged on the top wall 111 at intervals, the first magnetic component 3 is arranged on the top wall 111, and the two second magnetic components 4 are respectively arranged on the two side walls 112. In the contact relay of the scheme, the two second magnetic components 4 on the two side walls 112 generate two side magnetic fields for blowing the electric arc generated at the position of the fixed contact 2 to the connection line of the two fixed contacts 2, and the first magnetic component 3 on the top wall 111 can transit the magnetic lines of force generated by the second magnetic components 4 on the two side walls 112, so that the magnetic field strength of the contact area of the fixed contact 2 and the movable contact is increased, and the arc extinguishing effect is improved.

The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. A contact relay, comprising:

the shell (1), the shell (1) comprises a top wall (111) and two side walls (112) connected to the top wall (111);

the two static contacts (2) are arranged on the top wall (111) at intervals;

a first magnetic part (3), said first magnetic part (3) being provided on said top wall (111); and

the two second magnetic parts (4), the two second magnetic parts (4) are respectively arranged on the two side walls (112).

2. A contact relay according to claim 1, characterized in that the first magnetic part (3) is located between the two stationary contacts (2).

3. The contact relay according to claim 1, wherein the top wall (111) extends inwardly to form an annular wall (113) having a first mounting groove (114), the first magnetic member (3) being mounted in the first mounting groove (114).

4. The contact relay according to claim 1, wherein the two second magnetic members (4) are arranged symmetrically with respect to a perpendicular bisector of a line connecting the two stationary contacts (2).

5. A contact relay according to claim 4, characterized in that the two second magnetic parts (4) are located on the extension of the line connecting the two stationary contacts (2).

6. The contact relay according to claim 4, wherein the two second magnetic members (4) are arranged obliquely to an extension of a line connecting the two stationary contacts (2).

7. The contact relay according to claim 4, wherein two of said second magnetic members (4) are arranged perpendicular to an extension of a line connecting two of said stationary contacts (2).

8. The contact relay according to claim 1, wherein the second magnetic member (4) comprises a first sub-magnetic member (41) and a second sub-magnetic member (42), the second sub-magnetic member (42) is disposed on a side of the first sub-magnetic member (41) facing the side wall (112), and the second sub-magnetic member (42) has a smaller thickness than the first sub-magnetic member (41) and a larger width than the first sub-magnetic member (41).

9. The contact relay according to claim 8, characterized in that the second magnetic part (4) further comprises a magnetically conductive member (43), the magnetically conductive member (43) being provided on a side of the second sub-magnetic member (42) facing the side wall (112).

10. The contact relay according to claim 1, wherein the top wall (111) extends inward to form a blocking wall (115), a second mounting groove (116) is formed by the blocking wall (115) and the side wall (112), and the second magnetic member (4) is mounted in the second mounting groove (116).