WO2017185526A1

WO2017185526A1 - High-pressure direct-current relay

Info

Publication number: WO2017185526A1
Application number: PCT/CN2016/089176
Authority: WO
Inventors: 郭晓滨; 黄海燕; 杜德进; 李元凤
Original assignee: 浙江英洛华新能源科技有限公司
Priority date: 2016-04-29
Filing date: 2016-07-07
Publication date: 2017-11-02
Also published as: CN105826131B; CN105826131A

Abstract

A high-pressure direct-current relay, comprising a yoke plate (1), and a stationary contact assembly and a movable contact assembly provided above the yoke plate (1), the stationary contact assembly comprising a outlet terminal (2) and a stationary contact (3), the movable contact assembly comprising a movable spring (4) and a movable contact (5), a positioning plate (8) being provided on an upper side of the yoke plate (1), the positioning plate (8) being formed with a positioning frame extending upward, the outer periphery of the positioning frame being provided with a metal magnetic-conductive clamp (6) with an enclosed structure, a lower end of the metal magnetic-conductive clamp (6) being abutted against the positioning plate (8), and an upper end of the metal magnetic-conductive clamp (6) being abutted against an insulating plate (7). The yoke plate (1) and the insulating plate (7) are fixed by means of a fastener so that the metal magnetic-conductive clamp (6) is confined between the yoke plate (1) and the insulating plate (7), and the insulating plate (7), the metal magnetic-conductive clamp (6) and the yoke plate (1) constitute a cavity for receiving the stationary contact assembly and the movable contact assembly. Said relay has the advantages of providing better supporting strength to the leading-out terminal (2) and the stationary contact (3), and of lower manufacturing cost and higher reliability.

Description

Manual Title: High Voltage DC Relay

Technical field

The present invention relates to a high voltage direct current relay.

Background technique

[0002] The high voltage of the high voltage direct current relay according to the present invention is relative to the conventional safe voltage, and is mostly used in new energy vehicles and buses. The existing high-voltage DC relay comprises a movable contact assembly and a static contact assembly. The movable contact and the static contact are located in a frame formed with a cavity, and the frame is generally a plastic frame or a ceramic frame formed with a cavity, the frame The lower edge is fixed to the yoke plate of the relay, and the frame is supported by a static contact assembly. The plastic frame has support strength under normal temperature conditions and can support the static contact assembly. However, when the high-voltage DC relay is used, the plastic frame will be softened by the influence of temperature, and the parameters will change, so that the high-voltage DC relay using the plastic frame is used. The short life span affects the use; the ceramic frame has better support strength, but the ceramic frame is fixed with the yoke plate, the structure, the process is complicated, and the defective rate is high, which makes the cost higher and the reliability lower.

technical problem

[0003] The object of the present invention is to provide a solution for a high-voltage DC relay problem with low cost, good support strength and high reliability.

Technical solution

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A high voltage DC relay of the present invention includes a yoke plate, a static contact assembly and a movable contact assembly disposed above the yoke plate, and the static touch The point assembly includes a lead end and a static contact, the movable contact assembly includes a movable spring and a movable contact, and the yoke is provided with a positioning plate on the side thereof, and the positioning plate is formed with an upwardly extending positioning frame, and the positioning frame is peripheral The metal magnetic clip is provided with a surrounding structure, the lower end of the metal magnetic clip is opposite to the positioning plate, and the upper end of the metal magnetic clip is opposite to the insulating plate, and the yoke plate and the insulating plate are fixed by fasteners to guide the metal The magnetic clip is defined between the yoke plate and the insulating plate, and the insulating plate, the metal magnetically permeable clip, and the yoke plate form a chamber that houses the stationary contact assembly and the movable contact assembly. [0005] The present invention uses a fastener to define a metal magnetic clip between the insulating plate and the yoke plate, and the metal magnetic clip is not thermally deformed, thereby reliably ensuring the relative position of the insulating plate and the yoke plate, and then The precise alignment of the movable contact and the static contact is ensured, and the reliability of the high voltage DC relay of the invention is ensured. The invention supports the static contact assembly through the insulating plate. The insulating plate can be made of ceramic material or other insulating material other than the plastic material, and the magnetic permeability is guided by the metal magnetic clamping clip, and there is no change due to the high temperature softening parameter of the plastic frame. The risk of life reduction; in the case of using an insulating plate made of a ceramic material, the processing process of the insulating plate is simpler than that of the ceramic frame (ceramic cavity) having the inner cavity, and the manufacturing cost can be reduced; The fixing of the insulating plate, the metal magnetic clamping clip and the yoke plate by the fastener does not require the brazing of the insulating plate (insulating plate made of ceramic material) and the metal magnetic clamping clip, and the ceramic frame and the yoke are not required. The brazing of the iron plate further reduces the manufacturing cost of the high voltage direct current relay of the present invention. The fastener includes, but is not limited to, a bolt, and the yoke plate and the insulating plate are clamped by a bolt head and a fixing member engageable with the end of the bolt, and the upper and lower sides of the metal magnetic clip are fixed and fixed. The positioning frame and the metal magnetic clip can limit the horizontal direction of the metal magnetic clip, avoid the horizontal deflection of the metal magnetic clip, and fix the metal magnetic clip with the fastener.

[0006] Preferably, the height of the upper edge of the positioning frame is higher than the height of the contact between the movable contact and the static contact, and the metal magnetic clip is composed of a first magnetic clip and a single U-shaped structure. The second magnetically conductive clip of the U-shaped structure is composed of a single body, the mouth of the first magnetic clamping clip is opposite to the opening of the second magnetic clamping clip, the first magnetically conductive clip unit and the second magnetically conductive The clip unit is connected by a mating boring head and a tongue and groove provided at the unit opening of the first magnetic clip and the second magnetic clip unit.

[0007] The positioning plate needs to be made of an insulating material, so that the positioning frame can be extended upward to a certain height so that the upper edge of the positioning frame is higher than the contact position of the movable and static contacts, for example, the upper edge of the positioning frame is in contact with the insulating plate, The positioning frame is used to prevent the arc from being blown onto the metal magnetic clip; since the high-voltage DC relay is provided with magnetic steels (permanent magnets) arranged in pairs, the positioning frame needs to be located in the direction in which the magnetic steel blows. The metal magnetic clip is enclosed and needs to be closed around the static contact assembly and the movable contact assembly. If the metal magnetic clip is arranged in a quadrangular or elliptical or circular or other integral structure, then In the production process, the metal magnetic clamp has difficulty in stamping the stamping die, which will increase the production cost. The metal magnetic clip is set as two magnetic clamping clips, which can directly cut and bend the steel sheet into U-shaped, the mold is also easy to manufacture, which can reduce production costs. The boring head and the gutter are arranged to facilitate the combination of the first magnetically permeable clip unit and the second magnetically permeable clip unit Integral, the first magnetically permeable clip unit and the second magnetic permeable clip unit can be provided with a boring head and a tongue and groove on the left and right side walls of the vent; The side walls of the two sides are provided with a groove, so that a side wall is formed on the side walls of the left and right sides of the second magnetic clamping clip, and the side wall of the first magnetic clamping element can be formed. The side wall of the other side of the first magnetic flux clip is formed with a boring head, and the side wall of the side of the second magnetic permeable clip is formed with a grooving groove, and the second magnetic permeable clip is 幵The other side wall of the mouth is formed with a hoe. The first magnetic clamping clip unit and the second magnetic magnetic clamping unit 吋 can be cut on the steel plate, and the boring head and the gutter are cut together, no additional parts are required, and different numbers of hoes can be cut as needed. Gutter.

[0008] Preferably, the positioning frame includes a first positioning frame and a second positioning frame, and the first magnetic clamping clip unit and the second magnetic magnetic clamping unit are combined and assembled in the first positioning frame and The second positioning frame is outside, and the first positioning frame and the second positioning frame are spaced apart. The above arrangement can reduce the material of the positioning frame and reduce the production cost. Since the positioning frame is to be arc-retained, the positions of the first positioning frame and the second positioning frame must be matched with the position of the magnetic steel, and the arc cannot pass through the gap between the first positioning frame and the second positioning frame to be in contact with the metal. The magnetic clamp is in contact.

[0009] Preferably, the insulating plate is made of a ceramic material, the lead end includes an upper section, a middle section and a lower section, the static contact is fixed to a lower section of the lead end, and an upper section of the lead end is located outside the insulating board. The middle portion of the leading end is provided with an external thread, and the insulating plate is formed with a threaded through hole matched with the middle portion of the leading end. The leading end is screwed to the insulating plate, and the threaded through hole of the insulating plate is integrally formed by sintering the insulating plate.

[0010] The bolt can be inserted in front of the ceramic embryo to make the bolt unscrewed after the body body is formed, and then sintered to obtain a threaded ceramic insulating board, the process is simple, and the cost is lower than that of the ceramic. It also costs less than the soldering of the lead end and the insulation board. Wherein, the connecting end and the insulating plate are screwed and fixed to increase the connection strength between the leading end and the insulating plate, and the thickness of the ceramic insulating plate can be reduced under the connection strength of the leading end and the insulating plate, thereby reducing the production cost of the invention.

[0011] Preferably, the insulating plate is formed with a plurality of first fixing holes, the yoke plate is formed with a plurality of second fixing holes corresponding to the first fixing holes, and the fastener comprises a bolt, After the bolt passes through the first fixing hole, it is screwed with the second fixing hole, or the bolt passes through the first fixing hole and the second fixing hole in sequence, and is matched with the bolt nut. The positioning plate is formed with a bolt for passing. Give up a gap or make a hole.

[0012] assembling the bolt, screwing the bolt through the insulating plate and the yoke plate, so that the bolt head presses the insulating plate, The fixing of the yoke plate, the metal magnetic sandwich and the insulating plate can be realized. The first fixing hole may be disposed on the circumferential edge of the insulating plate, the second fixing hole is disposed on the circumferential edge of the yoke plate, and the fastener is located inside the metal magnetic clamping clip to protect the fastener. A second fixing hole with a thread is machined on the yoke plate to save nut parts and facilitate bolt assembly.

[0013] Preferably, the leading end comprises an upper section, a middle section and a lower section, the upper section of the outlet end is located outside the insulating board, the insulating board is formed with a through hole, and the leading end passes through the through hole downwardly and the leading end The middle portion is located in the through hole, the lower portion of the leading end is located at the lower side of the insulating plate, and the bottom surface of the lower portion of the leading end is formed with a static contact receiving groove, the static contact is fixed in the static contact receiving groove, and the lead is taken out The outer edge of the lower end section is formed with an external thread structure and is equipped with a lock nut. The locking nut made of iron or other magnetically permeable material can be used to pass a large current through the lock nut 吋, so that the lock nut has a magnetic attraction force to the moving spring, and the contact reliability of the movable and static contacts can be provided.

[0014] Preferably, the positioning plate is formed with a plurality of upwardly extending magnetic steel supporting blocks, and the magnetic steel is placed on the upper side of the magnetic steel supporting block; the magnetic steel is formed with a magnetic steel positioning notch, and the magnetic steel supporting block A magnetic steel positioning protrusion adapted to the positioning gap of the magnetic steel is formed. Place the magnetic steel on the magnetic steel support block, which can reduce the height of the magnetic steel compared with the magnetic steel placed on the positioning plate, which can reduce the production cost of the magnetic steel; the magnetic steel positioning notch and the magnetic steel positioning protrusion can facilitate the magnetic Positioning of steel; positioning and fixing of magnetic steel can be carried out by other means, such as forming a card slot on the magnetic steel support block, and the magnetic steel is stuck in the card slot, for example, a stopper is arranged on the left and right sides of the magnetic steel support block to make the magnetic steel The card is between the two stops.

[0015] Preferably, the first magnetic permeable clip unit and the second magnetic permeable clip unit have the same shape and size. The above arrangement makes the molding of the first magnetically conductive clip unit and the second lead-out monomer simpler, reducing the production cost of the present invention.

[0016] Preferably, the positioning plate is made of plastic material. The positioning plate is made of plastic material to increase the creepage distance and also facilitate the formation of the positioning frame on the positioning plate.

[0017] Preferably, the surface of the insulating plate is provided with at least one reinforcing rib, and the reinforcing rib is disposed along the longitudinal direction of the insulating plate. The above arrangement can reduce the thickness of the insulating plate, and the arrangement of the reinforcing ribs can avoid deformation of the insulating plate in the sintered forming, avoid bending of the insulating plate after sintering, and reduce the production cost of the present invention.

Advantageous effects of the invention

Beneficial effect [0018] The present invention has the advantages of better support strength, lower cost, and higher reliability for the lead end and the static contact.

DRAWINGS

1 is a schematic view showing the first structure of the present invention;

2 is a schematic cross-sectional view of the present invention;

3 is a schematic structural view of an insulating plate of the present invention;

4 is a schematic structural view of a metal magnetic magnetic clip of the present invention;

[0023] FIG. 5 is another schematic structural view of a metal magnetic magnetic clip of the present invention;

6 is a schematic structural view of a positioning plate of the present invention;

7 is a schematic structural view of a yoke plate of the present invention;

8 is a schematic structural view of a magnetic steel according to the present invention;

[0027] FIG. 9 is a schematic structural view of the magnetic steel of the present invention mated with a positioning plate.

BEST MODE FOR CARRYING OUT THE INVENTION

1 and 2, a high voltage DC relay of the present invention includes a yoke plate 1, a static contact assembly and a movable contact assembly disposed above the yoke plate 1, and the static contact assembly includes The terminal 2 and the stationary contact 3, the movable contact assembly comprises a movable spring 4 and a movable contact 5. The upper side of the yoke plate 1 is provided with a positioning plate 8 of insulating plastic material, and the positioning plate 8 is formed with an upwardly extending positioning frame. A metal magnetic clip 6 is formed on the periphery of the positioning frame, and the lower end of the metal magnetic clip 6 abuts against the positioning plate 8. The upper end of the metal magnetic clip 6 abuts the insulating plate 7, and the yoke plate 1 and the insulating plate 7 The metal magnetic clip 6 is fixed between the yoke plate 1 and the insulating plate 7 by fasteners, and the insulating plate 7, the metal magnetic clip 6 and the yoke plate 1 are formed to accommodate the static contact assembly and the dynamic contact. The chamber of the point assembly, the insulating plate 7 is made of ceramic material, and the upper edge of the positioning frame is in contact with the insulating plate 7.

[0029] As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 7, the insulating plate 7 and the yoke plate 1 have a square structure, and a first fixing hole 13 is formed at four corners of the insulating plate 7, and the yoke is formed. A second fixing hole 14 is formed in each of the four corners of the plate 1. The fastener is a bolt 9. The position of the first fixing hole 13 is in one-to-one correspondence with the position of the second fixing hole 14. After the bolt 9 passes through the first fixing hole 13, The second fixing hole 14 is screwed and fixed, and the head of the bolt 9 is located outside the insulating plate 7. [0030] As shown in FIG. 2 and FIG. 6, the positioning plate 8 has a square structure, and the four corners of the positioning plate are formed with a retaining notch 19 through which the bolt 9 can pass, and the four bolts are located inside the metal magnetic conductive clip 6.

[0031] As shown in FIG. 4 and FIG. 5, the metal magnetic conductive clip 6 is composed of a first magnetic conductive clip unit 11 and a second magnetic conductive clip unit 12

The first magnetic conductive clip unit 11 and the second magnetic magnetic clip unit 12 are both formed with a mouth, and the first magnetic conductive clip unit 11 and the second magnetic magnetic clip unit have a U-shaped cross section, first The magnetic flux clip unit 11 and the second magnetic flux clip unit 12 are opposed to each other.

[0032] The first magnetically permeable clip unit 11 and the second magnetic permeable clip unit 12 are interfitted by the first magnetically permeable clip unit 11 and the second magnetic permeable clip unit 12 The taro and the gutter are connected together. The positioning frame includes a first positioning frame 32 and a second positioning frame 33. The first positioning frame 32 and the second positioning frame 33 extend upwardly to contact the insulating plate, and the first magnetic clamping unit 11 and the second magnetic clamping unit are respectively After the splicing combination, the first positioning frame 32 and the second positioning frame 33 are disposed outside the first positioning frame 32 and the second positioning frame 33, and the first positioning frame 32 and the second positioning frame 33 are spaced apart.

[0033] A side groove is formed on one side wall of the left and right sides of the opening of the first magnetic flux clip unit 11, and a side wall is formed on the other side wall of the mouth of the first magnetic conductive clip unit 11. A side groove is formed on one side wall of the left and right sides of the mouth of the second magnetic conductive clip unit 12, and a side wall is formed on the other side wall of the mouth of the second magnetic conductive clip unit 12. The taro and the gutter are trapezoidal structures.

[0034] The first magnetic flux clip unit 11 includes a first side portion 42, a second side portion 43, and a third side portion 44, and the second side portion 43 and the third side portion 44 are located at opposite sides of the first side portion 42. Side, the second magnetic clip unit 12 includes a fourth side portion 45, a fifth side portion 46 and a sixth side portion 47, and the fifth side portion 46 and the sixth side portion 47 are located on opposite sides of the fourth side portion 45. . The second side portion 43 of the first magnetic flux clip unit 11 corresponds to the fifth side portion 46 of the second magnetic flux clip unit 12, and the third side portion 44 of the first magnetic conductive clip unit 11 corresponds to the second magnetic conductive clip The sixth side portion 47 of the unit 12.

[0035] The groove of the first magnetic flux clip unit 11 is the first groove 21 on the second side portion, and the first head of the first magnetic permeability clip unit 11 is the first head 22 on the third side portion; The groove of the two magnetic clip unit 12 is a second groove 23 on the sixth side portion which can cooperate with the first head 22, and the head of the second magnetic clip unit 12 is on the fifth side. A second boring head 24 mated with the first tongue and groove 21.

[0036] As shown in FIG. 1, FIG. 2 and FIG. 3, a spacer 41 is provided between the bow end 2 and the insulating plate 7, and the lead end 2 includes an upper section 61, a middle section 62 and a lower section 63, and the stationary contact 3 is led out. The lower portion 63 of the end 2 is fixed, the upper portion 61 of the leading end 2 is located outside the insulating plate 7, the middle portion 62 of the leading end 2 is provided with an external thread, and the insulating plate 7 is formed with a threaded through hole matching the leading end portion 62, the leading end 2 Threaded with the insulating plate 7, the threaded through hole of the insulating plate 7 is insulated by the insulating plate 7 The knot is formed in one piece. The surface of the insulating plate 7 is provided with two reinforcing ribs 31. The two reinforcing ribs 31 are respectively located on opposite sides of the insulating plate 7, and the two reinforcing ribs 31 are disposed along the long direction of the insulating plate 7.

4, 5, and 6, the first positioning frame 32 includes a seventh side portion 51 that can abut against the inner wall of the first side portion 42, and an eighth side portion that can abut against the inner wall of the second side portion 43. a portion 52 that can abut the inner wall of the third side portion 44; the second positioning frame 33 includes a tenth side portion 54 that can abut the inner wall of the fourth side portion 45, and the inner wall of the fifth side portion 46 The tenth side portion 55 is a twelfth side portion 56 that can abut against the inner wall of the sixth side portion 47.

[0038] The thirteenth side portion 57 and the fourteenth side portion 58 are formed on the seventh side portion 51 of the first positioning frame 32, and the thirteenth side portion 57 and the fourteenth side portion 58 are located at the seventh side portion 51. The opposite sides, and the seventh side portion 51, the thirteenth side portion 57 and the fourteenth side portion 58 form a U-shaped structure; the tenth side portion 54 of the second positioning frame 33 is formed with a fifteenth side portion 59 and the sixteenth side portion 50, the fifteenth side portion 59 and the sixteenth side portion 50 are located on opposite sides of the tenth side portion 54, and the tenth side portion 54, the fifteenth side portion 59 and the sixteenth portion The side portion 50 forms a U-shaped structure. The eighth side portion 52 is disposed perpendicular to the thirteenth side portion 57, the second side portion 43 is opposite to the top end of the eighth side portion 52, and the ninth side portion 53 is disposed perpendicularly to the fourteenth side portion 58, the third side portion 44 may be offset from the top end of the ninth side portion 53; the tenth side portion 55 is disposed perpendicular to the fifteenth side portion 59, and the fifth side portion 46 is offset from the top end of the tenth side portion 55, the twelfth side portion 56 is disposed perpendicular to the sixteenth side 50, and the sixth side portion 47 is offset from the top end of the twelfth side portion 56.

[0039] As shown in FIG. 2, FIG. 6, FIG. 7, FIG. 8, and FIG. 9, the metal magnetic conductive clip 6 is provided with a pair of magnetic steel 10, and a magnetic steel supporting block is formed on the positioning plate 8, and the magnetic steel is formed. 10 is located on the upper side of the magnetic steel support block, and the highest point of the magnetic steel support block is lower than the lowest point of the movable contact 5. The magnetic steel support block is composed of a plurality of magnetic steel support block units 16 , and the magnetic steel support block unit and the magnetic steel form an appropriate positioning structure, the magnetic steel is formed with a magnetic steel positioning notch 17 , and the magnetic steel support block unit 16 A magnet positioning projection 18 is formed which is adapted to the magnetic steel positioning notch 17. The length of the magnetic steel is adapted to the distance between the eighth side portion and the tenth side portion, the distance between the ninth side portion and the twelfth side portion, the width of the magnetic steel and the ninth side portion, the eighth side The length of the part, the eleventh side, and the twelfth side are adapted

[0040] The magnetic steel 10 includes a first magnetic steel and a second magnetic steel, and the first magnetic steel and the magnetic steel support block unit adapted to the first magnetic steel are located at the eighth side portion 52 and the tenth side portion 55. The second magnetic steel and the magnetic steel support block unit adapted to the second magnetic steel are located between the ninth side portion 53 and the twelfth side portion 56. And the first magnetic steel is located between the second side portion 43 and the thirteenth side portion 44, and the first magnetic steel is located between the fifth side portion 46 and the fifteenth side portion 59, the second magnetic The steel is located between the third side portion 44 and the fourteenth side portion 58, and the second magnetic steel is located between the sixteenth side portion 50 and the sixth side portion 47.

The first magnetically permeable clip unit and the second magnetic permeable clip unit of the metal magnetic permeable clip of the present invention may be formed by cutting and bending a single steel plate, and the metal magnetic permeable clip is not integrally formed by stamping, but is composed of two monomers. The production process is simpler and lower cost. The insulating plate of the present invention is not brazed to the metal magnetically permeable clip, but is formed by integrally forming the first fixing hole formed by the insulating plate, the second fixing hole and the fastener on the yoke plate.

(Bolt) The three components are fixed together. The metal magnetic clip is supported between the insulating plate and the yoke plate to avoid the high cost caused by the brazing process and reduce the production and assembly cost of the high-voltage DC relay. The first fixing hole and the second fixing hole are located at the four corners, so that the insulating chamber formed by the insulating plate, the metal magnetic clamping clip and the yoke plate of the present invention is more stable and more reliable. Since the present invention employs a ceramic insulating plate, there is no need to worry about deformation of the insulating plate after long-term use, and there is no need to worry about parameter variations due to a decrease in supporting strength of the stationary contact assembly, and the reliability of the present invention is higher.

Claims

Claim

A high voltage direct current relay includes a yoke plate, a static contact assembly disposed above the yoke plate, and a movable contact assembly, the static contact assembly including a lead end and a stationary contact, the movable contact assembly including The reed and the movable contact are characterized in that a positioning plate is arranged on the side of the yoke plate, and the positioning plate is formed with an upwardly extending positioning frame, and a metal magnetic clamping clip with a surrounding structure is arranged around the positioning frame, and the metal is magnetically guided. The lower end of the clip is opposite to the positioning plate, and the upper end of the metal magnetic clip is opposite to the insulating plate, and the yoke plate and the insulating plate are fixed by fasteners to define the metal magnetic clip between the yoke plate and the insulating plate, The insulating plate, the metal magnetically permeable clip, and the yoke plate form a chamber that houses the stationary contact assembly and the movable contact assembly.

The high voltage direct current relay according to claim 1, wherein a height of an upper edge of the positioning frame is higher than a height of a contact of the movable contact and the stationary contact, and the metal magnetic clamp is

The first magnetic flux clip unit of the U-shaped structure and the second magnetic magnetic clip unit of the U-shaped structure, the mouth of the first magnetic clip unit and the mouth of the second magnetic clip unit are opposite The first magnetically permeable clip unit and the second magnetically permeable clip unit are connected by a mating boring head and a tongue and groove provided at the first magnetic permeable clip unit mortise and the second magnetic permeable clip unit mortise.

The high voltage direct current relay according to claim 2, wherein the positioning frame comprises a first positioning frame and a second positioning frame, and the first magnetic clamping clip unit and the second magnetic clamping clip are spliced and combined. The sleeve is disposed outside the first positioning frame and the second positioning frame, and the first positioning frame and the second positioning frame are spaced apart.

The high voltage direct current relay according to claim 1, wherein the insulating plate is made of a ceramic material, and the leading end comprises an upper section, a middle section and a lower section, and the static contact is fixed to a lower section of the lead end, and the lead is taken out. The upper portion of the end is located outside the insulating plate, the middle portion of the leading end is provided with an external thread, and the insulating plate is formed with a threaded through hole matched with the middle portion of the leading end, the leading end is screwed with the insulating plate, and the threaded through hole of the insulating plate is The insulating plate is sintered and integrally formed.

The high voltage direct current relay according to claim 1 or 2 or 3, wherein the insulating plate is formed with a plurality of first fixing holes, and the yoke plate is formed with a plurality of second fixings corresponding to the first fixing holes. a hole, the fastener includes a bolt, and the bolt passes through the first fixing hole After being screwed to the second fixing hole, or the bolt passes through the first fixing hole and the second fixing hole in sequence, and is matched with the bolt nut, the positioning plate is formed with a retaining notch or a retaining hole for the bolt to pass through. .

[Claim 6] The high voltage direct current relay according to claim 1, wherein the leading end comprises an upper section, a middle section and a lower section, and an upper section of the outlet end is located outside the insulating board, and the insulating board is formed with a through hole. The leading end passes through the through hole downwardly and the middle portion of the leading end is located in the through hole, the lower end portion of the leading end is located at the lower side of the insulating plate, and the bottom surface of the lower end portion of the leading end is formed with a static contact receiving groove, and the static contact is fixed In the static contact receiving groove, the outer edge of the lower end of the leading end is formed with an external thread structure and is matched with a lock nut.

[Claim 7] The high voltage direct current relay according to claim 1 or 2 or 3, wherein the positioning plate is formed with a plurality of upwardly extending magnetic steel support blocks, and the magnetic steel is placed on the magnetic steel support block. The magnetic steel is formed with a magnetic steel positioning notch, and the magnetic steel supporting block is formed with a magnetic steel positioning protrusion adapted to the magnetic steel positioning notch.

[Claim 8] The high voltage direct current relay according to claim 2 or 3, characterized in that the first magnetic permeable holder unit and the second magnetic permeable holder unit have the same shape and size.

[Claim 9] The high voltage direct current relay according to claim 1 or 2 or 3, wherein the positioning plate is made of a plastic material.

[Claim 10] The high voltage direct current relay according to claim 1 or 2 or 3, characterized in that the surface of the insulating plate is provided with at least one reinforcing rib, and the reinforcing rib is disposed along the longitudinal direction of the insulating plate.