CN218385028U

CN218385028U - High-voltage direct-current relay

Info

Publication number: CN218385028U
Application number: CN202222792243.6U
Authority: CN
Inventors: 吕齐龙
Original assignee: Zhongchuangxin Aviation Technology Hefei Co ltd; China Lithium Battery Technology Co Ltd
Current assignee: Zhongchuangxin Aviation Technology Hefei Co ltd; China Lithium Battery Technology Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-24
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a high voltage direct current relay, adopt single magnet nonpolar mode to realize magnetism blowout arc extinguishing, and be used for setting up the plummer on the same lateral wall of installation static contact at the explosion chamber, and set up the second mounting hole that runs through at the plummer, be connected with on the permanent magnet and insert the post, during the installation, will insert the post and insert by the one end of second mounting hole, the interference assembly who utilizes between post and the second mounting hole is equipped with the location of realizing the permanent magnet, when the relative position of permanent magnet in the explosion chamber is adjusted to needs, can push away the permanent magnet or push away from the other end of second mounting hole and insert the post, the depth of insertion of post is inserted in the change, and then the position of change permanent magnet, solve the problem that the permanent magnet position among the prior art is unadjustable or inconvenient regulation, the arc extinguishing effect preferred.

Description

High-voltage direct-current relay

Technical Field

The utility model relates to a relay technical field especially relates to a high voltage direct current relay.

Background

In current high-voltage direct-current relay, generally be provided with two arc extinguishing magnet in its explosion chamber, two arc extinguishing magnet are located moving contact length direction's both sides respectively, and the magnetic field direction that two arc extinguishing magnet formed parallels with moving contact length direction to realize the magnetic blow-out arc extinguishing. But it has polarity requirement to the contact load, and the customer must be according to specified positive and negative polarity wiring, and it is troublesome to use, and the security is low, and manufacturing cost is high.

Based on this, in some improvements, the requirement of non-polarity of contact load is met by adjusting the magnetic pole orientation of the two arc extinguishing magnets. However, it has at least the following problems: two arc extinguishing magnets are arranged, so that the production cost is high; the position of the arc extinguishing magnet is in place once installed, cannot be adjusted, is influenced by the production precision and the assembly precision of each part, and the arc extinguishing effect is difficult to control in the best state.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art an at least defect, the utility model provides a high voltage direct current relay adopts the nonpolarity mode of single magnet to realize the magnetic blow-out arc, and utilizes the interference fit of inserting post and second mounting hole, realizes the fine setting of permanent magnet position, and convenient equipment.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a high voltage direct current relay comprising:

the arc extinguishing chamber is characterized in that one side wall of the arc extinguishing chamber is provided with a bearing table and two first mounting holes, the bearing table is positioned between the two first mounting holes, and the bearing table is provided with a second mounting hole which penetrates through the bearing table;

the two static contacts are respectively arranged in different first mounting holes in a penetrating way;

the permanent magnet is connected with an inserting column in interference fit with the second mounting hole, and the inserting depth of the inserting column in the second mounting hole is controlled so as to adjust the relative position of the permanent magnet in the arc extinguishing chamber;

the permanent magnet and the two fixed contacts are positioned on the same side of the movable contact plate, and two ends of the movable contact plate are respectively used for being in conductive connection with the two fixed contacts to form a conductive plane.

The utility model provides a high-voltage direct-current relay, adopt single magnet non-polar mode to realize magnetic blowout arc extinguishing, and be used for setting up the plummer on the same lateral wall of installation static contact at the explosion chamber, and set up the second mounting hole that runs through at the plummer, be connected with on the permanent magnet and insert the post, during the installation, to insert the post and insert by the one end of second mounting hole, utilize the interference fit between inserting post and the second mounting hole to be equipped with the location of realizing the permanent magnet, when the relative position of permanent magnet in the explosion chamber is adjusted to needs, can push away the permanent magnet or push away from the other end of second mounting hole and insert the post, the depth of insertion of post is inserted in the change, and then change the position of permanent magnet, solve the problem that the permanent magnet position among the prior art is unadjustable or inconvenient regulation, the arc extinguishing effect preferred.

Drawings

Fig. 1 is a schematic cross-sectional structural diagram of a high-voltage direct-current relay according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an arc extinguishing upper housing according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram between the fixed contact and the permanent magnet and between the movable contact plates in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a movable touch panel according to an embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. an arc extinguishing chamber; 101. an arc extinguishing upper housing; 102. an arc extinguishing lower shell; 11. a bearing table; 12. a first mounting hole; 111. a second mounting hole; 112. a placement groove; 113. a side dam; 2. static contact; 3. a permanent magnet; 31. inserting a column; 4. a movable touch plate; 41. a middle plate; 42. a sloping plate; 43. a contact plate; 44. a position avoiding groove; 5. an electromagnetic push rod assembly; 6. a housing.

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 accompanying 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to 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 invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, the utility model discloses a high voltage direct current relay, include: the device comprises an arc extinguish chamber 1, two fixed contacts 2, a permanent magnet 3, a movable contact plate 4, an electromagnetic push rod assembly 5 and a shell 6.

The shell 6 plays a role in integral encapsulation and protection, the arc extinguish chamber 1 and the electromagnetic push rod assembly 5 are installed in the shell 6, the electromagnetic push rod assembly 5 is positioned above the arc extinguish chamber 1, two fixed contacts 2, a permanent magnet 3 and a movable contact plate 4 are arranged in the arc extinguish chamber 1, the permanent magnet 3 and the two fixed contacts 2 are positioned on the same side of the movable contact plate 4, and the movable contact plate 4 can move relative to the fixed contacts 2; one end of a push rod in the electromagnetic push rod assembly 5 penetrates into the arc extinguish chamber 1 and is connected with the movable contact plate 4, the electromagnetic push rod assembly 5 serves as a driving source and can drive the movable contact plate 4 to move towards or away from the fixed contacts 2, and when two ends of the movable contact plate 4 are in conductive connection with the two fixed contacts 2, two groups of contact surfaces or contact points can form a conductive plane.

It can be understood that the two fixed contacts 2 penetrate the arc extinguishing chamber 1 and the housing 6 and are exposed to the outside to facilitate external wiring and conductive connection with the moving contact plate 4.

It can be understood that the permanent magnet 3 is located between the two stationary contacts 2, and the permanent magnet 3 can form a magnetic field in the arc extinguishing chamber 1 to perform magnetic quenching.

Importantly, a side wall of the arc extinguish chamber 1 is provided with a bearing table 11 and two first mounting holes 12, the bearing table 11 is located between the two first mounting holes 12, the bearing table 11 is provided with a penetrating second mounting hole 111, the two static contacts 2 respectively penetrate through the different first mounting holes 12, the permanent magnet 3 is connected with an insertion column 31 in interference fit with the second mounting hole 111, and the insertion depth of the insertion column 31 in the second mounting hole 111 is controlled to adjust the relative position of the permanent magnet 3 in the arc extinguish chamber 1.

Through the above scheme, during the installation, to insert post 31 and insert by the one end of second mounting hole 111, utilize the interference fit between inserting post 31 and the second mounting hole 111 to realize the location of permanent magnet 3, when the relative position of permanent magnet 3 in explosion chamber 1 needs to be adjusted, can push up permanent magnet 3 or push up from the other end of second mounting hole 111 and insert post 31, the depth of insertion of post 31 is inserted in the change, and then change the position of permanent magnet 3, the problem of permanent magnet 3 position unadjustable or inconvenient regulation among the prior art is solved, avoid because of the influence of production precision or assembly precision to permanent magnet 3 mounted position, the arc extinguishing effect preferred, and convenient adjustment.

It should be noted that, the electromagnetic push rod assembly 5 and the housing 6 are not the innovative points of the present invention, and any known conventional technical solutions can be adopted, and the present invention does not limit the present invention, and is not set forth herein.

Referring to fig. 1 and 2, and the direction shown in fig. 1 as a reference, specifically, the arc extinguishing chamber 1 includes an arc extinguishing upper housing 101 and an arc extinguishing lower housing 102, the arc extinguishing lower housing 102 is plate-shaped and is close to the electromagnetic push rod assembly 5, the arc extinguishing upper housing 101 has a mounting cavity with a downward opening, the arc extinguishing lower housing 102 is connected below the arc extinguishing upper housing 101 by means of fastening, adhering, welding, abutting and the like to block the opening of the mounting cavity, thereby forming a closed space; the first mounting hole 12 penetrates through the top wall of the arc extinguishing upper housing 101 in the vertical direction; the plummer 11 is integrally formed on the inner side of the top wall of the arc-extinguishing upper housing 101 and extends toward the arc-extinguishing lower housing 102; the second mounting hole 111 penetrates the top wall of the plummer 11 and the arc-extinguishing upper case 101 in a vertical direction, so that a tool can be inserted from the outside of the arc-extinguishing upper case 101 to push the stud 31.

Referring to fig. 3, specifically, the inserting column 31 and the permanent magnet 3 may be connected in any one of a magnetic attraction connection manner, an adhesion manner, a welding manner, and an integral formation manner, or may be a combination of a plurality of connection manners, so as to achieve a relatively fixed connection between the inserting column 31 and the permanent magnet 3.

Preferably, one end surface of the bearing platform 11 is recessed inwards to form a placing groove 112 communicated with the end part of the second mounting hole 111, and the permanent magnet 3 is positioned in the placing groove 112; specifically, the second mounting holes 111 and the placing grooves 112 are sequentially arranged from top to bottom, and form a stepped structure. With the arrangement, the placing groove 112 can provide a certain friction force action for the permanent magnet 3 to assist the positioning of the permanent magnet 3; in addition, the placing groove 112 can also limit the permanent magnet 3 from moving up excessively, and moreover, four side walls of the placing groove 112 surround the permanent magnet 3 and can serve as spacers between the permanent magnet 3 and the static contact 2 to play a role of an insulating layer.

Of course, an insulating layer formed in other manners may be further disposed between the permanent magnet 3 and the static contact 2, such as an additionally disposed insulating plate, an insulating tape, an insulating coating, or an insulating gas filled in the insulating layer, and it is more preferable that insulating layers are disposed on a plurality of surfaces of the permanent magnet 3.

Preferably, the gap between the polar surface of the permanent magnet 3 and the conductive contact point of the static contact 2 is between 5MM and 10MM, so as to ensure that the magnetic field intensity acting on the conductive contact point of the static contact 2 meets the arc extinguishing performance, and the short circuit between the permanent magnet 3 and the static contact 2 can not be caused because the gap is too small. More preferably, the gap between the polar surface of the permanent magnet 3 and the conductive contact point of the stationary contact 2 is between 6MM and 8 MM.

Referring to fig. 2, because there is no direct connection relationship between the movable contact plate 4 and the arc extinguish chamber 1, in order to avoid the possibility of the movable contact plate 4 rotating and causing poor contact with the stationary contact 2, in this embodiment, the two opposite side walls of the placing slot 112 extend to form the side baffles 113, and the two side baffles 113 are located at the two sides of the movable contact plate 4, so that the side baffles 113 are utilized to limit the possibility of the movable contact plate 4 rotating, and the side baffles 113 are integrated on the bearing table 11, without setting an additional fixing part, the whole structure is simple, and the production is convenient.

Referring to fig. 1, 3 and 4, in order to facilitate that the magnetic field generated by the permanent magnet 3 can uniformly act on the conductive contact point of the static contact 2, the moving contact plate 4 is provided with a avoiding groove 44, and the permanent magnet 3 is partially located in the avoiding groove 44 and intersects with the conductive plane.

Preferably, the avoiding groove 44 is formed by bending and sinking the middle part of the moving contact plate 4 towards the direction far away from the permanent magnet 3, so that the moving contact plate 4 formed by integrally punching and bending is more convenient to produce and saves cost.

More preferably, the movable contact plate 4 is substantially in an inverted-shape, and includes a transverse middle plate 41, two inclined plates 42 and two contact plates 43, the two inclined plates 42 are respectively connected to two ends of the middle plate 41 and inclined toward the fixed contact 2, the two contact plates 43 are respectively connected to one inclined plate 42 and parallel to the middle plate 41, wherein the middle plate 41 and the two inclined plates 42 enclose a clearance groove 44. Thus, a certain elastic deformation capacity can be provided through the inclined plate 42, so that the conductive contact effect of the contact plate 43 and the static contact 2 is better.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A high voltage direct current relay, comprising:

the arc extinguishing chamber is characterized in that a bearing table and two first mounting holes are formed in one side wall of the arc extinguishing chamber, the bearing table is located between the two first mounting holes, and a penetrating second mounting hole is formed in the bearing table;

the two static contacts are respectively arranged in the different first mounting holes in a penetrating way;

and the permanent magnet and the two static contacts are positioned on the same side of the movable contact plate, and two ends of the movable contact plate are respectively used for being in conductive connection with the two static contacts to form a conductive plane.

2. The high-voltage direct current relay according to claim 1, wherein a placing groove communicated with the end of the second mounting hole is formed in an inward concave manner at one end face of the bearing table, and the permanent magnet is located in the placing groove.

3. The high-voltage direct-current relay according to claim 2, wherein two opposite side walls of the placement groove are extended to form side baffles, and the two side baffles are located on two sides of the movable contact plate.

4. The HVDC relay of claim 1, wherein the insert column and the permanent magnet are magnetically connected or adhered or welded or integrally formed.

5. The high-voltage direct current relay according to any one of claims 1 to 4, wherein a clearance groove is formed in the movable contact plate, and the permanent magnet portion is located in the clearance groove and intersects with the conductive plane.

6. The high-voltage direct-current relay according to claim 5, wherein the avoiding groove is formed by bending and sinking the middle part of the movable contact plate towards the direction far away from the permanent magnet.

7. The high-voltage direct-current relay according to claim 6, wherein the movable contact plate includes a transverse middle plate, two inclined plates and two contact plates, the two inclined plates are respectively connected to two ends of the middle plate and inclined towards the fixed contact, the two contact plates are respectively connected to one inclined plate and parallel to the middle plate, and the middle plate and the two inclined plates enclose the avoiding groove.

8. The high-voltage direct current relay according to claim 1, characterized in that an insulating layer is arranged between the permanent magnet and the static contact.

9. The HVDC relay of claim 8, wherein the insulating layer covers multiple surfaces of the permanent magnet.

10. The high-voltage direct current relay according to claim 1, characterized in that a gap between the polar surface of the permanent magnet and the conductive contact point of the stationary contact is between 5MM and 10 MM.