Relay

Abstract

Disclosed in the present application is a high-voltage direct-current relay. The high-voltage direct-current relay comprises an auxiliary static assembly and an auxiliary moving spring, wherein the auxiliary moving spring comprises a leaf spring and auxiliary moving contact points, a plurality of auxiliary moving contact points are provided at one end of the leaf spring, and each auxiliary moving contact point is used for being in contact with or separated from the auxiliary static assembly. According to the high-voltage direct-current relay in the embodiments of the present application, there are a plurality of auxiliary moving contact points at one end of the auxiliary moving spring, and each auxiliary moving contact point is used for being in contact with or separated from the auxiliary static assembly, so that at least two contact points are formed between the auxiliary moving spring and the auxiliary static assembly. When one of the contact points fails, the remaining contact points may also remain turned on, such that the loop of an auxiliary contact portion remains conductive. Therefore, the auxiliary moving spring in the embodiments of the present application can reduce to a certain extent the probability of non-conduction occurring between the auxiliary moving spring and the auxiliary static assembly.

Description

relay

[0001] This disclosure claims priority to Chinese patent application No. 202323073921.4 filed on November 14, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the technical field of electronic control devices, and in particular to a relay. Background Art

[0003] A relay is an electronic control device with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0004] A high-voltage DC relay is a type of relay that consists of a main contact section and an auxiliary contact section. The auxiliary contact section includes an auxiliary movable spring and an auxiliary static spring. The open / closed state of the main contact section is monitored by the closing or opening of the contact between the auxiliary movable spring and the auxiliary static spring.

[0005] In the prior art, the auxiliary movable spring and the auxiliary static spring are usually designed as a contact point. When foreign matter (such as plastic chips, etc.) appears at the contact point between the auxiliary movable spring and the auxiliary static spring or the auxiliary movable spring is deformed, causing the contacts to be unable to contact, the circuit of the auxiliary contact part may become non-conductive, resulting in the inability to effectively monitor the open / closed state of the main contact part.

[0006] Summary of the Invention

[0007] An embodiment of the present application provides a high-voltage DC relay to solve the problem in the prior art that the circuit of the auxiliary contact part is prone to non-conduction.

[0008] The high-voltage DC relay according to the embodiment of the present application includes:

[0009] Auxiliary static components; and

[0010] An auxiliary dynamic spring comprises a spring leaf and an auxiliary dynamic contact. One end of the spring leaf is provided with a plurality of auxiliary dynamic contacts, and each of the auxiliary dynamic contacts is used to contact or separate with the auxiliary static component.

[0011] According to some embodiments of the present application, a plurality of arms are provided at one end of the reed, and the auxiliary moving contact is provided on each of the arms.

[0012] According to some embodiments of the present application, the high-voltage DC relay further includes an active spring and a pair of static contact lead-out terminals, wherein two ends of the active spring along a first direction are used to respectively contact or separate with the pair of static contact lead-out terminals; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0013] Both ends of the spring sheet along the first direction are provided with a plurality of arms arranged along the third direction; wherein the movement direction of the active spring is the second direction, and the first direction, the second direction and the third direction are perpendicular to each other;

[0014] There are two auxiliary static components, which are used to respectively contact or separate with the auxiliary moving contacts at both ends of the auxiliary dynamic spring along the first direction.

[0015] According to some embodiments of the present application, the high voltage DC relay further includes a push rod;

[0016] The auxiliary dynamic spring and the push rod are integrally formed.

[0017] According to some embodiments of the present application, the auxiliary dynamic spring and the push rod are integrally formed by injection molding.

[0018] According to some embodiments of the present application, the high-voltage DC relay further includes a yoke plate, the yoke plate having a first mounting hole, and the first mounting hole penetrates the yoke plate along a thickness direction of the yoke plate;

[0019] The auxiliary static component is passed through the first mounting hole and is fixedly connected to the yoke iron plate.

[0020] According to some embodiments of the present application, the auxiliary static assembly includes an insulating member, a lead pin, and an auxiliary static contact; the insulating member surrounds the outer peripheral surface of the lead pin, the lead pin is inserted into the first mounting hole, and is insulated and connected to the yoke plate through the insulating member; the auxiliary static contact is connected to one end of the lead pin extending from one side surface of the yoke plate in the thickness direction;

[0021] Each of the auxiliary moving contacts is used to make contact with or separate from the auxiliary static contact.

[0022] According to some embodiments of the present application, the tail of the lead-out pin has a support section, and the auxiliary static contact is fixedly connected to the end of the support section;

[0023] The axis of the support section is perpendicular to the yoke iron plate, and the contact and separation directions of the auxiliary moving contact and the auxiliary static contact are parallel to the axis of the support section.

[0024] According to some embodiments of the present application, the auxiliary static assembly has a plurality of auxiliary static contacts;

[0025] The plurality of auxiliary moving contacts are used to respectively contact or separate with the plurality of auxiliary static contacts.

[0026] According to some embodiments of the present application, each of the auxiliary static contacts has an outer arc surface in contact with the auxiliary dynamic spring.

[0027] One embodiment of the above application has at least the following advantages or beneficial effects:

[0028] In the high-voltage DC relay of the present embodiment, one end of the auxiliary dynamic spring has multiple auxiliary dynamic contacts, each of which is used to make or break contact with the auxiliary static component. This creates at least two contact points between the auxiliary dynamic spring and the auxiliary static component. If one of the contact points fails, the remaining contact points remain conductive, maintaining the circuit of the auxiliary contact portion. Therefore, the auxiliary dynamic spring of the present embodiment can reduce the probability of disconnection between the auxiliary dynamic spring and the auxiliary static component to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of a relay at one viewing angle according to an exemplary embodiment.

[0030] FIG2 is a schematic structural diagram of a relay shown from another perspective according to an exemplary embodiment.

[0031] FIG3 is a cross-sectional view taken along line AA in FIG1 .

[0032] FIG4 is a cross-sectional view taken along the BB section line in FIG2 .

[0033] FIG5 is a schematic diagram of the relay shown in FIG1 omitting the housing, ceramic cover, frame and magnetic circuit.

[0034] FIG6 is a schematic top view of the yoke plate and two auxiliary static assemblies after being fixedly connected according to the first exemplary embodiment.

[0035] FIG7 is a side schematic diagram showing a yoke plate and two auxiliary static assemblies fixedly connected according to the first exemplary embodiment.

[0036] FIG8 is a cross-sectional view taken along the CC cutting line in FIG6 .

[0037] FIG9 is a partial enlarged view of point X1 in FIG3 .

[0038] FIG10 is a schematic diagram of the auxiliary movable contact in the prior art when the auxiliary movable contact contacts the auxiliary static contact and the auxiliary movable contact is offset.

[0039] 11 and 12 are schematic diagrams showing two types of auxiliary static contacts having outer arc surfaces and auxiliary movable contacts being offset according to an exemplary embodiment.

[0040] FIG13 is a partial enlarged view of position X2 in FIG4 .

[0041] FIG. 14 is a schematic diagram showing an auxiliary dynamic spring and two auxiliary static assemblies according to an exemplary embodiment.

[0042] FIG15 is a schematic top view of a yoke plate and two auxiliary static components after being fixedly connected according to the second exemplary embodiment.

[0043] FIG16 is a schematic diagram showing a yoke plate and two auxiliary static assemblies fixedly connected according to the third exemplary embodiment.

[0044] The description of the accompanying drawings is as follows:

[0045] In the figure: 11, ceramic cover; 111, socket; 12, frame; 13, yoke iron plate; 131, first through-hole; 132, plate body; 132a, first surface; 132b, second surface; 1321, second mounting hole; 1322, sinking groove; 133, adapter ring; 1331, first mounting hole; 1332, adapter post; 1333, adapter flange; 14, housing; 20, main contact portion; 21, static contact lead-out terminal; 22, active spring; 40, push rod assembly; 41, push rod; 42, contact bracket; 421, top wall; 422, side wall; 43, spring seat; 44, elastic member; 50, magnetic circuit portion; 51, moving iron core; 52, static iron core; 521, second through-hole; 5 3. Reset member; 54. Metal cover; 55. Coil assembly; 551. Enameled wire; 552. Coil frame; 60. Auxiliary contact portion; 61. Auxiliary static assembly; 611. Insulator; 612. Lead-out pin; 6121. Support section; 6121a. End face; 6122. Horizontal section; 6123. Vertical section; 6124. Lead-out section; 613. Auxiliary static contact; 6131. ​​Connecting portion; 6132. Contact cap; 6132a. Top face; 6132b. Bottom face; 6133. Auxiliary static contact; 6133a. Outer arc surface; 62. Auxiliary moving spring; 621. Support arm; 622. Auxiliary moving contact; 623. Reed; D1. First direction; D2. Second direction; D3. Third direction. DETAILED DESCRIPTION

[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0047] As shown in FIG. 1 to FIG. 5 , the relay according to the embodiment of the present application includes a yoke plate 13 , a ceramic cover 11 , a main contact portion 20 , a magnetic circuit portion 50 , a push rod assembly 40 and a housing 14 .

[0048] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to the process, method, product, or apparatus.

[0049] The yoke plate 13 defines a first through-hole 131 that passes through both sides of the yoke plate 13 in the thickness direction. The ceramic cover 11 is disposed on one side of the yoke plate 13 and covers the first through-hole 131 of the yoke plate 13 .

[0050] As an example, the ceramic cover 11 can be connected to one side surface of the yoke plate 13 through a frame piece 12. The frame piece 12 can be a metal piece with an annular structure, and the metal material can be an iron-nickel alloy, but is not limited to this. One end of the frame piece 12 is connected to the opening edge of the ceramic cover 11, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 12 is connected to the yoke plate 13, and the connection method can also be laser welding, brazing, resistance welding, gluing, etc. It can be understood that arranging a frame piece 12 between the ceramic cover 11 and the yoke plate 13 can facilitate the connection between the ceramic cover 11 and the yoke plate 13.

[0051] The main contact part 20 includes an active spring 22 and a pair of static contact lead-out terminals 21. Two sockets 111 are provided on the top of the ceramic cover 11, and the two static contact lead-out terminals 21 are respectively inserted into the two sockets 111, and a portion of each static contact lead-out terminal 21 extends into the ceramic cover 11. The bottom of each static contact lead-out terminal 21 serves as a static contact. The active spring 22 is movably arranged in the ceramic cover 11, and the two ends of the active spring 22 along the first direction D1 serve as moving contacts, which are respectively used to contact or separate with the bottoms of the two static contact lead-out terminals 21, so as to realize the closing or disconnection of the main contact of the main contact part 20. Among them, the first direction D1 is the arrangement direction of the pair of static contact lead-out terminals 21. The movement direction of the active spring 22 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3.

[0052] The push rod assembly 40 is movably inserted into the first through-hole 131 of the yoke plate 13. The active spring 22 of the main contact portion 20 is attached to the push rod assembly 40 via an elastic member 44. When the push rod assembly 40 reciprocates, it drives the active spring 22 to move, thereby closing or opening the main contacts of the main contact portion 20. The elastic member 44 is used to provide contact pressure to the active spring 22.

[0053] In one embodiment, the elastic member 44 may be a compression spring, but is not limited thereto.

[0054] The push rod assembly 40 includes a push rod 41 and a contact bracket 42. The push rod 41 is movable along the second direction D2 and extends through the first through-hole 131. The contact bracket 42 is connected to one axial end of the push rod 41. The active spring 22 is mounted within the space enclosed by the contact bracket 42 via an elastic member 44.

[0055] In the embodiment of the present application, one axial end of the push rod 41 is connected to a spring seat 43 , and the contact support 42 is connected to the spring seat 43 . One end of the elastic member 44 abuts against the spring seat 43 , and the other end of the elastic member 44 abuts against the active spring 22 .

[0056] As shown in Figure 5, further, the contact bracket 42 may include a top wall 421 and two side walls 422, the top wall 421 is located on the side of the active spring 22 facing the static contact lead-out end 21, one end of the two side walls 422 is respectively integrally connected to the two sides of the top wall 421 along the third direction D3, and the other ends of the two side walls 422 are respectively connected to the two sides of the spring seat 43 along the third direction D3.

[0057] Of course, in other embodiments, the push rod assembly 40 may also adopt other structures, which are not listed here one by one.

[0058] As shown in Figure 3, the magnetic circuit part 50 includes a moving iron core 51, a static iron core 52, a reset member 53 and a metal cover 54. The metal cover 54 is connected to the side surface of the yoke plate 13 facing away from the ceramic cover 11, and the metal cover 54 is covered in the first through-hole 131 of the yoke plate 13. The static iron core 52 is arranged in the metal cover 54 and is fixedly arranged on the side of the yoke plate 13 facing away from the ceramic cover 11. The static iron core 52 is provided with a second through-hole 521, and the second through-hole 521 corresponds to the position of the first through-hole 131. The push rod 41 of the push rod assembly 40 is movably passed through the first through-hole 131 and the second through-hole 521. The moving iron core 51 is movably arranged in the metal cover 54 and is connected to the end of the push rod 41 away from the active spring 22, for example by screwing. The reset member 53 is arranged between the static iron core 52 and the moving iron core 51, and is used to reset the moving iron core 51.

[0059] In one embodiment, the reset member 53 may be a compression spring. The compression spring is sleeved on the outer periphery of the push rod 41, and one end of the compression spring abuts against the static iron core 52, and the other end of the compression spring abuts against the movable iron core 51, for providing an elastic force to move the movable iron core 51 away from the static iron core 52.

[0060] It should be noted that the magnetic circuit portion 50 also includes a coil assembly 55, which includes an enameled wire 551 and a coil frame 552. The coil frame 552 surrounds the outer periphery of the metal cover 54, and the enameled wire 551 surrounds the outer periphery of the coil frame 552. When the enameled wire 551 is energized, the movable iron core 51 is acted upon by the magnetic force, driving the push rod assembly 40 upward. The push rod assembly 40 then drives the active spring 22 into contact with the static contact lead 21, thereby closing the main contacts. When the enameled wire 551 is de-energized, the movable iron core 51 is acted upon by the reset member 53 and moves downward, thereby driving the active spring 22 to separate from the static contact lead 21, thereby opening the main contacts.

[0061] As shown in FIG3 , the relay of the present embodiment further includes an auxiliary contact portion 60, which includes an auxiliary static component 61 and an auxiliary movable spring 62. The auxiliary movable spring 62 is configured to contact or separate from the auxiliary static component 61. The closing or opening of the auxiliary contact between the auxiliary movable spring 62 of the auxiliary contact portion 60 and the auxiliary static component 61 can be used to monitor the closing / opening state of the main contact between the active spring 22 and the static contact terminal 21.

[0062] The auxiliary dynamic spring 62 is connected to the push rod 41 and moves with the push rod 41. The auxiliary static assembly 61 is fixedly connected to the yoke iron plate 13. When the push rod 41 reciprocates in the second direction D2, the push rod 41 can drive the auxiliary dynamic spring 62 to move, thereby achieving contact or separation between the auxiliary dynamic spring 62 and the auxiliary static assembly 61.

[0063] It is understood that the auxiliary contact portion 60 can be a normally open contact or a normally closed contact. Specifically, a normally open contact means that when the enameled wire 551 is de-energized, the auxiliary movable spring 62 and the auxiliary static component 61 are in a disconnected state; when the enameled wire 551 is energized, the auxiliary movable spring 62 and the auxiliary static component 61 are closed. A normally closed contact means that when the enameled wire 551 is de-energized, the auxiliary movable spring 62 and the auxiliary static component 61 are in a closed state; when the enameled wire 551 is energized, the auxiliary movable spring 62 and the auxiliary static component 61 are disconnected. Specifically, the normally open or normally closed setting can be adjusted by changing the relative height and spacing between the support section 6121 and the auxiliary movable spring 62.

[0064] In one embodiment, the auxiliary dynamic spring 62 is integrally formed with the push rod 41. Furthermore, the auxiliary dynamic spring 62 and the push rod 41 can be integrally injection molded. It will be appreciated that since the auxiliary dynamic spring 62 and the push rod 41 are integrally formed, the dimensional chain between the auxiliary dynamic spring 62 and the push rod 41 is reduced, dimensional accuracy is more easily controlled, and the movement consistency of the main contact of the main contact portion 20 and the auxiliary contact of the auxiliary contact portion 60 is ensured.

[0065] As shown in Figures 3 and 6 to 9, the yoke plate 13 has a first mounting hole 1331, and the first mounting hole 1331 passes through the yoke plate 13 along the thickness direction of the yoke plate 13 (i.e., the second direction D2). The auxiliary static component 61 includes an insulating member 611, a lead pin 612, and an auxiliary static contact 613. The insulating member 611 surrounds the outer peripheral surface of the lead pin 612, and the lead pin 612 is passed through the first mounting hole 1331 and is insulated and connected to the yoke plate 13 through the insulating member 611. The auxiliary static contact 613 is connected to one end of the lead pin 612 extending out of the side surface of the yoke plate 13 in the thickness direction. The auxiliary movable spring 62 and the auxiliary static contact 613 are located on the same side of the yoke plate 13, and the auxiliary movable spring 62 is used to contact or separate with the auxiliary static contact 613.

[0066] The lead pin 612 is made of a first material, and the auxiliary static contact 613 is made of a second material. The first material and the second material may be the same or different.

[0067] In an embodiment of the present application, the first material and the second material are different, and the auxiliary static component 61 includes an insulating member 611, a lead pin 612 made of the first material, and an auxiliary static contact 613 made of the second material. The lead pin 612 is insulated and connected to the yoke iron plate 13 through the insulating member 611, and the auxiliary static contact 613 is connected to the lead pin 612 for contacting or separating with the auxiliary dynamic spring 62. The lead pin 612 can be made of a first material with a coefficient of expansion close to that of the insulating member 611, and the second material of the auxiliary static contact 613 can be made of a second material with better conductivity. In this way, the expansion coefficients of the first material and the material of the insulating member 611 are close, which ensures the connection reliability between the lead pin 612 and the insulating member 611, and the second material has better conductivity, which ensures the conductive contact performance of the contact between the auxiliary static contact 613 and the auxiliary dynamic spring 62, taking into account the issues of contact reliability and connection reliability.

[0068] It is understandable that the auxiliary static contact 613 and the lead pin 612 can be an integrated structure or a separate structure.

[0069] In one embodiment, when the auxiliary static contact 613 and the lead pin 612 are separate structures, the auxiliary static contact 613 and the lead pin 612 can be connected by welding, riveting, etc., which is not particularly limited in this application.

[0070] It should be noted that the auxiliary static contact 613 and the lead pin 612 are designed as a separate structure, which makes the assembly connection between the auxiliary static contact 613 and the lead pin 612 more convenient and efficient.

[0071] In one embodiment, the insulating member 611 is made of a third material, and the third material of the insulating member 611 has the same expansion coefficient as the first material of the lead pin 612 ; the conductivity of the second material is better than that of the first material.

[0072] It can be understood that the same expansion coefficient includes absolutely the same expansion coefficient and approximately the same expansion coefficient. Although the expansion coefficients of the third material and the first material are not exactly the same, the difference in their expansion coefficients is within a certain range (for example, the absolute value of the difference in their expansion coefficients is not more than 10% of the ratio of the expansion coefficient of the first material), and does not affect the connection firmness of the insulating part 611 and the lead pin 612, it should also be within the protection scope of the embodiment of the present application.

[0073] Furthermore, the first material is Kovar 4J29, the second material is oxygen-free copper, and the third material is glass, but the present invention is not limited thereto. For example, the first material may also be 4J33, 4J50, or other iron-nickel alloys or iron-cobalt-nickel alloys.

[0074] It is understandable that, in one embodiment, the insulating member 611 may be in direct contact with the outer peripheral surface of the lead pin 612 ; in another embodiment, other components may be provided between the insulating member 611 and the lead pin 612 .

[0075] In addition, in the embodiment of the present application, the shape of the first mounting hole 1331 can be circular, elliptical, rectangular or other suitable shapes, and the outer periphery of the insulating member 611 is adapted to the shape of the first mounting hole 1331 .

[0076] As shown in Figures 3, 6 and 7, in the embodiment of the present application, the auxiliary contact portion 60 includes an auxiliary dynamic spring 62 and two auxiliary static components 61, each auxiliary static component 61 includes an insulating member 611, a lead pin 612 and an auxiliary static contact 613.

[0077] The two auxiliary static assemblies 61 are arranged along the first direction D1. The yoke plate 13 is provided with two first mounting holes 1331 arranged along the first direction D1. The two auxiliary static assemblies 61 are respectively inserted into the two first mounting holes 1331 and are fixedly connected to the yoke plate 13. The two ends of the auxiliary dynamic spring 62 along the first direction D1 are used to respectively contact or separate with the auxiliary static contacts 613 of the two auxiliary static assemblies 61.

[0078] It is understood that the auxiliary contact portion 60, comprising an auxiliary movable spring 62 and two auxiliary static components 61, can be normally open contacts, normally closed contacts, or switching contacts. Normally open and normally closed contacts have been described in detail above and will not be repeated here. Regarding switching contacts, it can be understood that the two auxiliary static components 61 can be arranged along the second direction D2. When the enameled wire 551 is de-energized, the auxiliary movable spring 62 contacts one of the auxiliary static components 61. When the enameled wire 551 is energized, the auxiliary movable spring 62 disconnects from the auxiliary static component 61 and contacts the other auxiliary static component 61.

[0079] As shown in Figures 8 and 9, the yoke plate 13 includes a plate body 132 and an adapter ring 133. The plate body 132 has a second mounting hole 1321 and a first through-hole 131 for the push rod 41 to be movably inserted therethrough. The adapter ring 133 is disposed within the second mounting hole 1321 and is connected to the plate body 132. The adapter ring 133 has a first mounting hole 1331, and the lead pin 612 is insulated and connected to the adapter ring 133 via an insulating member 611. The plate body 132 and the adapter ring 133 are made of different materials.

[0080] In the embodiment of the present application, the yoke plate 13 includes a plate body 132 and an adapter ring 133. The materials of the plate body 132 and the adapter ring 133 are different. Therefore, the adapter ring 133 can use a material similar to that of the insulating part 611 to ensure that the expansion coefficient of the adapter ring 133 and the insulating part 611 is not too different, thereby ensuring the connection reliability between the adapter ring 133 and the insulating part 611.

[0081] In the embodiment of the present application, the plate body 132 has two second mounting holes 1321, and the first through hole 131 is disposed between the two second mounting holes 1321. Furthermore, the first through hole 131 is centrally disposed between the two second mounting holes 1321, but the present invention is not limited thereto.

[0082] The adapter ring 133 and the plate body 132 may be connected by a welding process, such as brazing, but not limited thereto.

[0083] Of course, in other embodiments, the yoke plate 13 may also be made of an integral piece. When the insulating member 611 is made of a suitable material, the insulating member 611 may be directly connected to the yoke plate 13 .

[0084] Continuing with Figures 8 and 9, the plate body 132 has a first surface 132a and a second surface 132b disposed opposite each other along its thickness direction (i.e., the second direction D2). The first surface 132a faces the static contact lead terminal 21, while the second surface 132b faces away from the static contact lead terminal 21. The auxiliary static contact 613 is connected to the end of the lead pin 612 that extends beyond the first surface 132a. The plate body 132 also has a sunken groove 1322 formed by the second surface 132b being recessed toward the first surface 132a. The second mounting hole 1321 extends through the bottom surface of the sunken groove 1322. The adapter ring 133 includes an adapter column 1332 and an adapter flange 1333, and the adapter flange 1333 is connected to the outer circumference of the adapter column 1332; the adapter column 1332 is passed through the second mounting hole 1321 and has a first mounting hole 1331; the adapter flange 1333 is accommodated in the sinking groove 1322 and is connected to the bottom surface of the sinking groove 1322.

[0085] In the embodiment of the present application, the adapter flange 1333 is received in the sinking groove 1322 and connected to the bottom surface of the sinking groove 1322 , which can improve the connection reliability between the adapter ring 133 and the plate body 132 .

[0086] In another embodiment, the sinking groove 1322 of the plate body 132 may also be formed by being recessed from the first surface 132a toward the second surface 132b.

[0087] Of course, in other embodiments, the plate body 132 may not be provided with the sinking groove 1322 , and the adapter ring 133 may be connected to the first surface 132 a or the second surface 132 b .

[0088] As shown in Figure 9, the adapter column 1332 is cylindrical and the adapter flange 1333 is annular; the outer diameter of the adapter column 1332 is L1, the outer diameter of the adapter flange 1333 is L2, and the aperture of the first mounting hole 1331 is L3, where L1, L2 and L3 satisfy: (L1-L3) / (L2-L3) can be greater than 1 / 2.

[0089] In the embodiment of the present application, since (L1-L3) / (L2-L3) is greater than 1 / 2, the wall thickness of the adapter column 1332 can be significantly increased, making it less likely to deform, thereby preventing the insulating member 611 from cracking.

[0090] In one embodiment, the insulating member 611 is made of glass. Furthermore, the lead pin 612, the insulating member 611 and the adapter ring 133 can be connected by a sintering process.

[0091] It is understood that, in the embodiment of the present application, the assembly order of the yoke iron plate 13 and the auxiliary static assembly 61 can be any one of the following three:

[0092] (1) The lead pin 612, the insulating member 611, and the adapter ring 133 are connected by a sintering process. Then, the lead pin 612, the insulating member 611, and the adapter ring 133 are connected to the plate body 132. The adapter ring 133 and the plate body 132 can be connected by a welding process. Finally, the auxiliary static contact 613 is connected to the lead pin 612, for example, by welding or riveting.

[0093] (2) The lead pin 612, the insulating member 611, and the adapter ring 133 are connected by a sintering process, and then the adapter ring 133 and the plate body 132, as well as the auxiliary static contact 613 and the lead pin 612, are connected by a welding process;

[0094] (3) The lead pin 612, the insulating member 611 and the adapter ring 133 are connected by a sintering process, and then the auxiliary static contact 613 is connected to the lead pin 612, for example, by welding or riveting, and finally the adapter ring 133 is connected to the plate body 132 by a welding process.

[0095] As shown in Figures 8, 13 and 14, the lead pin 612 is a needle-shaped structure (when the auxiliary static contact 613 is annular, the inner wall of its connecting portion 6131 fits more closely with the outer peripheral surface of the needle-shaped lead pin 612), and includes a support section 6121 and a horizontal section 6122. The support section 6121 is provided at the tail of the lead pin 612, and the support section 6121 is passed through the first mounting hole 1331 and is insulated and connected to the yoke plate 13 through the insulating member 611. The auxiliary static contact 613 is fixedly connected to the end of the support section 6121, that is, the auxiliary static contact 613 is connected to the end of the support section 6121 away from the yoke plate 13 (if the auxiliary dynamic spring 62 is directly contacted through the end face 6121a of the lead pin 612, the end face 6121a needs to be polished, which will increase the generation of foreign matter and affect the contact performance and reliability of the auxiliary contact). The auxiliary movable spring 62 includes a spring leaf 623 and an auxiliary movable contact 622, and the auxiliary movable contact 622 is connected to the spring leaf 623. The auxiliary static contact 613 includes a plurality of auxiliary static contacts 6133, each of which is configured to contact or separate from the auxiliary movable contact 622. The contact and separation directions of the auxiliary static contacts 6133 and the auxiliary movable contact 622 are parallel to the axis of the support segment 6121.

[0096] It can be understood that the lead pin 612 has two ends, wherein the end of the support section 6121 is one of the ends of the lead pin 612 .

[0097] In addition, the contact and separation direction of the auxiliary static contact 6133 and the auxiliary moving contact 622 is parallel to the axis of the support section 6121. It should be understood that: when there is an angle between the contact and separation direction and the axis of the support section 6121, as long as the support section 6121 can play the role of supporting the auxiliary static contact 613, it should be considered to be within the protection scope of the embodiment of the present application.

[0098] In one embodiment, the aforementioned angle may be less than or equal to 15 degrees; further, the angle may be less than or equal to 10 degrees; further, the angle may be less than or equal to 5 degrees.

[0099] The axis of the support section 6121 is perpendicular to the yoke plate 13. The horizontal section 6122 is located on the other side of the yoke plate 13 in the thickness direction. One end of the horizontal section 6122 is connected to the other end of the support section 6121 that extends out of the other side of the yoke plate 13 in the thickness direction. The axis of the horizontal section 6122 is perpendicular to the yoke plate 13.

[0100] In the embodiment of the present application, the auxiliary static contact 613 is fixedly connected to the end of the support section 6121. The contact and separation directions of the auxiliary movable contact 622 of the auxiliary movable spring 62 and the auxiliary static contact 6133 of the auxiliary static contact 613 are parallel to the axis of the support section 6121. The support section 6121 is equivalent to directly contacting and supporting the auxiliary static contact 613, which improves the stability of the auxiliary static contact 613 and thereby ensures the contact accuracy between the auxiliary movable spring 62 and the auxiliary static contact 613. In addition, the auxiliary static contact 613 has multiple auxiliary static contacts 6133, each of which is used to contact or separate with the auxiliary movable contact 622. The multiple auxiliary static contacts 6133 can greatly reduce the risk of non-conduction. Therefore, under the combined effect of the auxiliary static contact 613 being fixedly connected to the end of the support section 6121 and the auxiliary static contact 613 having multiple auxiliary static contact points 6133, the circuit of the auxiliary contact part 60 being non-conductive due to poor contact between the auxiliary dynamic spring 62 and the auxiliary static contact 613 is avoided, thereby improving the reliability of the product.

[0101] Furthermore, the auxiliary static contact 613 is directly covered on the end of the support section 6121 away from the yoke iron plate 13 , and the contact and separation directions of the auxiliary static contact 613 and the auxiliary dynamic spring 62 are parallel to the second direction D2 .

[0102] In one embodiment, a plane perpendicular to the axis of the support segment 6121 is defined, and the area of ​​the orthographic projection of the auxiliary static contact 613 on this plane is larger than the area of ​​the orthographic projection of the support segment 6121 on the same plane. Thus, the provision of the auxiliary static contact 613 increases the area of ​​the clap-fit ​​position of the auxiliary moving and static contacts. When the auxiliary dynamic spring 62 rotates about the axis of the push rod 41 or when the auxiliary dynamic spring 62 moves, the increased area of ​​the clap-fit ​​position still ensures effective contact between the auxiliary moving and static contacts.

[0103] Furthermore, in one embodiment, the orthographic projection of the support segment 6121 on the plane falls within the orthographic projection of the auxiliary static contact 613. In another embodiment, the orthographic projection of the auxiliary static contact 613 on the plane surrounds the periphery of the orthographic projection of the support segment 6121 on the plane.

[0104] The lead-out leg 612 further includes a vertical section 6123 and a lead-out section 6124. One end of the vertical section 6123 is connected to the end of the horizontal section 6122 away from the support section 6121. The axis of the vertical section 6123 is parallel to the axis of the support section 6121. One end of the lead-out section 6124 is connected to the end of the vertical section 6123 away from the horizontal section 6122, and the axis of the lead-out section 6124 is parallel to the axis of the horizontal section 6122.

[0105] As shown in Figures 8 and 9, the auxiliary static contact 613 is located on the side of the auxiliary movable spring 62 facing the yoke plate 13. The auxiliary static contact 613 also includes a connecting portion 6131 and a contact cap 6132. The connecting portion 6131 is fixedly connected to the outer circumference of the support section 6121, and the contact cap 6132 is integrally connected to the end of the connecting portion 6131 near the auxiliary movable contact 622. The contact cap 6132 has a top surface 6132a facing the auxiliary movable contact 622, and each auxiliary static contact 6133 is protruding from the top surface 6132a.

[0106] The support segment 6121 has an end surface 6121a facing the auxiliary movable contact 622. The end surface 6121a is connected to the outer circumference of the support segment 6121. The contact cap 6132 can be a flat plate and covers the end surface 6121a. The contact cap 6132 has a bottom surface 6132b disposed along the axis of the support segment 6121, facing away from the top surface 6132a. The bottom surface 6132b abuts the end surface 6121a. The area of ​​the top surface 6132a is larger than that of the end surface 6121a.

[0107] It will be appreciated that, in the embodiment of the present application, the support segment 6121 is supported below the contact cap 6132 and abuts the bottom surface 6132b of the contact cap 6132. The support provided by the support segment 6121 significantly improves the stability of the contact cap 6132, ensuring the contact accuracy between the auxiliary dynamic spring 62 and the auxiliary static contact 613. Furthermore, the increased stability of the contact cap 6132 significantly reduces the risk of circuit failure in the auxiliary contact portion 60 due to poor contact between the auxiliary dynamic spring 62 and the auxiliary static contact 613. This compact connection design ensures stable and reliable contact performance of the auxiliary contact assembly while also meeting the requirements for product miniaturization.

[0108] In one embodiment, the axis of the support segment 6121 is perpendicular to the bottom surface 6132b of the contact cap 6132. It will be appreciated that the perpendicularity of the axis of the support segment 6121 to the bottom surface 6132b of the contact cap 6132 allows the direction of the force acting between the auxiliary movable contact 622 and the auxiliary static contact 6133 to be along the axis of the support segment 6121. This ensures that when the auxiliary contacts make contact, the support segment 6121 is virtually immune to bending forces, thereby ensuring the stability of the support segment 6121 and, in turn, the stability of the auxiliary static contact 6133, resulting in a longer effective contact life.

[0109] In one embodiment, the connecting portion 6131 is a plate-like structure, and is welded to the outer circumference of the support segment 6121. On the one hand, welding the connecting portion 6131 to the support segment 6121 improves the secure connection between the contact cap 6132 and the support segment 6121. On the other hand, the plate-like structure and the welding of the connecting portion 6131 to the outer circumference of the support segment 6121 place the abutment point between the support segment 6121 and the contact cap 6132 close to the weld point between the connecting portion 6131 and the support segment 6121, thereby improving the overall stability of the auxiliary static contact 613 and the support segment 6121.

[0110] As a variant embodiment, the auxiliary static contact 613 can also adopt the structure shown in Figure 13. The connecting portion 6131 is a hollow cylindrical structure, which is sleeved around the outer periphery of the end of the support section 6121 away from the yoke plate 13 and riveted to the support section 6121. The contact cap 6132 is an annular structure and surrounds the outer periphery of the connecting portion 6131. ​​The contact cap 6132 is parallel to the yoke plate 13. The auxiliary static contact 6133 is protruding from the top surface 6132a of the contact cap 6132, facing the auxiliary movable contact 622 of the auxiliary movable spring 62.

[0111] In the embodiment of the present application, the auxiliary static contact 613 is directly covered by one end of the support section 6121 near the auxiliary movable contact 622 of the auxiliary movable spring 62. The auxiliary static contact 6133 is protruded from the surface of the contact cap 6132 on the side facing the auxiliary movable contact 622 of the auxiliary movable spring 62. This ensures that the contact and separation directions of the auxiliary movable contact 622 and the auxiliary static contact 6133 are approximately parallel to the axis of the support section 6121. This allows the lead pin 612 to better support the auxiliary static contact 613, ensuring contact stability between the auxiliary static contact 613 and the auxiliary movable spring 62 and increasing the service life of the auxiliary static contact 613. This also improves the space utilization within the ceramic cover 11, facilitating the miniaturization of the relay.

[0112] Continuing to refer to FIG. 13 , in one embodiment, the top surface 6132 a of the contact cap 6132 is flush with the end surface 6121 a of the support segment 6121 .

[0113] It is understood that the auxiliary static contact 6133 and the contact cap 6132 may be integrally connected or separately connected. Furthermore, in another embodiment, the auxiliary static contact 6133 may not protrude from the contact cap 6132, but may instead be flush with the surface of the contact cap 6132 facing the auxiliary movable contact 622 of the auxiliary movable spring 62. In other words, the auxiliary static contact 6133 is a region of the contact cap 6132.

[0114] The auxiliary static contact 6133 has an outer arc surface 6133a that contacts the auxiliary movable spring 62. By configuring the auxiliary static contact 6133 to have an outer arc surface 6133a that contacts the auxiliary movable spring 62, wear on the auxiliary movable contact 622 and the auxiliary static contact 6133 during contact can be reduced, while also increasing the contact area between the auxiliary movable contact 622 and the auxiliary static contact 6133.

[0115] Specifically, as shown in FIG10 , when the outer surface of the auxiliary static contact 6133 is entirely flat, the auxiliary movable contact 622, when deflected, will contact the sharp corners of the auxiliary static contact 6133. These sharp corners increase the impact wear between the auxiliary movable contact 622 and the auxiliary static contact 6133. Furthermore, because the flat surface is a fracture zone, its roughness is difficult to control. Consequently, the contact point between the auxiliary static contact 6133 and the auxiliary movable contact 622 can only be a small, sharp point, which is not conducive to increasing the contact area of ​​the sharp point.

[0116] In contrast, in the present application, as shown in Figures 11 and 12, the auxiliary static contact 6133 has an outer arc surface 6133a. When the auxiliary moving contact 622 is offset, it is always in tangential contact with the outer arc surface 6133a, so that the wear between the auxiliary moving contact 622 and the auxiliary static contact 6133 is small; in addition, because the outer arc surface 6133a is smoother, its roughness is easier to control, and the contact area of ​​the contact point position between the auxiliary static contact 6133 and the auxiliary moving contact 622 can be increased by reducing the surface roughness of the outer arc surface 6133a.

[0117] As shown in FIG. 13 and FIG. 14 , one end of the reed 623 has a plurality of auxiliary movable contacts 622 , and the plurality of auxiliary movable contacts 622 are used to respectively contact or separate with the plurality of auxiliary static contacts 6133 .

[0118] In the embodiment of the present application, a plurality of auxiliary movable contacts 622 are respectively provided at both ends of the spring 623 along the first direction D1. The plurality of auxiliary movable contacts 622 at each end of the auxiliary movable spring 62 are used to respectively contact or separate with the plurality of auxiliary static contacts 6133 of an auxiliary static component 61.

[0119] In a specific embodiment, two auxiliary movable contacts 622 are respectively provided on two sides of the reed 623 along the first direction D1 , and each auxiliary static component 61 has two auxiliary static contacts 6133 , but the present invention is not limited thereto.

[0120] It is understood that the auxiliary movable contact 622 and the reed 623 may be integrally connected or separately connected. Furthermore, in one embodiment, the auxiliary movable contact 622 may protrude from the side of the reed 623 facing the auxiliary static contact 6133. In another embodiment, the auxiliary movable contact 622 does not protrude from the side of the reed 623 facing the auxiliary static contact 6133, but is instead formed on a portion of the reed 623.

[0121] The advantages of using multiple auxiliary moving contacts 622 in the auxiliary moving spring 62 of this embodiment will be described in detail below with reference to FIG. 14 .

[0122] As shown in Figure 14, for ease of explanation, the upper left auxiliary movable contact 622 is defined as 1#, the lower left auxiliary movable contact 622 is defined as 2#, the upper right auxiliary movable contact 622 is defined as 3#, and the lower right auxiliary movable contact 622 is defined as 4#. It is understood that if foreign matter (such as plastic shavings, etc.) is introduced into the contact point between the auxiliary movable spring 62 and the auxiliary static assembly 61, or if the auxiliary movable spring 62 is deformed, resulting in a loss of contact, the circuit of the auxiliary contact portion 60 may become disconnected.

[0123] For the auxiliary contact portion 60 in the embodiment of the present application, it is necessary to satisfy the conditions that 1# and 2# are not conductive at the same time or 3# and 4# are not conductive at the same time, which will cause the circuit of the auxiliary contact portion 60 to be non-conductive.

[0124] If only one of 1#, 2#, 3#, or 4# is not conducting, or if 1# and 4# are not conducting, 1# and 3# are not conducting, 2# and 4# are not conducting, or 2# and 3# are not conducting, the entire auxiliary contact portion 60 is still conducting. Therefore, by designing one end of the auxiliary movable spring 62 with multiple auxiliary movable contacts 622, the probability of circuit non-conduction can be reduced.

[0125] Continuing with Figure 14 , a plurality of arms 621 are provided at one end of the spring 623 along the first direction D1. These arms 621 are arranged side by side along the third direction D3, and each arm 621 is provided with an auxiliary movable contact 622. Because the arms 621 are independent of each other, the plurality of auxiliary movable contacts 622 at one end of the auxiliary movable spring 62 along the first direction D1 are also independent of each other. This prevents the displacement of one auxiliary movable contact 622 from affecting the remaining auxiliary movable contacts 622.

[0126] It is understood that the auxiliary movable contacts 622 provided at both ends of the auxiliary movable spring 62 along the first direction D1 may be the same or different. For example, one end of the auxiliary movable spring 62 along the first direction D1 may be provided with two auxiliary movable contacts 622, and the other end of the auxiliary movable spring 62 along the first direction D1 may be provided with three auxiliary movable contacts 622.

[0127] In addition, among the plurality of arms 621 at both ends of the reed 623 along the first direction D1 , some of the arms 621 may be provided with the auxiliary movable contacts 622 , while the other arms 621 may not be provided with the auxiliary movable contacts 622 .

[0128] As shown in FIG15 , the similarities between the second embodiment and the first embodiment are not repeated here, and the differences between the second embodiment and the first embodiment are as follows:

[0129] The auxiliary static contact 613 includes a plurality of auxiliary static contacts 6133 arranged circumferentially around the lead pin 612. The auxiliary movable spring 62 has one or more auxiliary movable contacts 622 at one end along the first direction D1, configured to contact or separate from the plurality of auxiliary static contacts 6133.

[0130] It is understood that the number of auxiliary movable contacts 622 at one end of the auxiliary movable spring 62 along the first direction D1 can be less than the number of auxiliary static contacts 6133 included in the auxiliary static contact 613. For example, in one embodiment, the auxiliary static contact 613 includes eight auxiliary static contacts 6133, which are evenly spaced along the circumference of the lead pin 612. The auxiliary movable spring 62 has two auxiliary movable contacts 622 at one end along the first direction D1. Of course, in other embodiments, the number of auxiliary static contacts 6133 included in the auxiliary static contact 6133 can also be three, four, five, six, or other numbers.

[0131] In the embodiment of the present application, when the auxiliary dynamic spring 62 rotates slightly around the axis of the push rod 41, since the multiple auxiliary static contacts 6133 are arranged along the circumference of the lead-out pin 612, the rotated auxiliary dynamic spring 62 can still contact at least one of the multiple auxiliary static contacts 6133, thereby avoiding the auxiliary contact part 60 from being unable to conduct due to the rotation of the auxiliary dynamic spring 62, thereby improving the fault tolerance space.

[0132] In one embodiment, the contact cap 6132 is an annular structure, and the plurality of auxiliary static contacts 6133 are arranged along the circumference of the contact cap 6132. Furthermore, the plurality of auxiliary static contacts 6133 are arranged at equal intervals along the circumference of the contact cap 6132.

[0133] As shown in FIG16 , the similarities between the third embodiment and the first embodiment are not repeated here, and the differences between the third embodiment and the first embodiment are as follows:

[0134] The auxiliary static contact 613 is located on the side of the auxiliary dynamic spring 62 facing away from the yoke iron plate 13 .

[0135] It is understandable that the various embodiments / implementations provided in this application can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0136] In the application examples, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the application examples can be understood according to the specific circumstances.

[0137] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the application embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the application embodiments.

[0138] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the claimed invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0139] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high voltage DC relay, characterized in that: include: two auxiliary static components; as well as An auxiliary dynamic spring, both ends of which are used to contact or separate from the two auxiliary static components respectively, and the auxiliary dynamic spring comprises a spring leaf and an auxiliary dynamic contact, and one end of the spring leaf is provided with a plurality of auxiliary dynamic contacts for contacting or separating from the auxiliary static components.

2. The high voltage DC relay according to claim 1, characterized in that: One end of the spring sheet is provided with a plurality of supporting arms, and each of the supporting arms is provided with the auxiliary moving contact.

3. The high voltage DC relay according to claim 2, characterized in that: The high-voltage DC relay further includes an active spring and a pair of static contact lead-out terminals, and two ends of the active spring along a first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; Both ends of the spring sheet along the first direction are provided with a plurality of arms arranged along the third direction; wherein the moving direction of the active spring is the second direction, and the first direction, the second direction and the third direction are perpendicular to each other; The two ends of the auxiliary dynamic spring along the first direction are used to contact or separate from the two auxiliary static components respectively.

4. The high voltage DC relay according to claim 1, characterized in that: The high voltage DC relay also includes a push rod; The auxiliary dynamic spring and the push rod are integrally formed.

5. The high voltage DC relay according to claim 4, characterized in that: The auxiliary dynamic spring and the push rod are integrally formed by injection molding.

6. The high voltage DC relay according to claim 1, characterized in that: The high-voltage DC relay further comprises a yoke plate, wherein the yoke plate has a first mounting hole, and the first mounting hole penetrates the yoke plate along a thickness direction of the yoke plate; The auxiliary static component is inserted into the first mounting hole and is fixedly connected to the yoke iron plate.

7. The high voltage DC relay according to claim 6, characterized in that: The auxiliary static component includes an insulating member, a lead pin and an auxiliary static contact; the insulating member surrounds the outer peripheral surface of the lead pin, the lead pin is inserted into the first mounting hole, and is insulated and connected to the yoke iron plate through the insulating member; the auxiliary static contact is connected to one end of the lead pin extending out of a side surface in the thickness direction of the yoke iron plate; wherein the lead pin is made of a first material, the auxiliary static contact is made of a second material, and the first material and the second material are different; Each of the auxiliary moving contacts is used for contacting or separating with the auxiliary stationary contact.

8. The high voltage DC relay according to claim 7, characterized in that: The tail of the lead-out pin has a supporting section, and the auxiliary static contact is fixedly connected to the end of the supporting section; The axis of the support section is perpendicular to the yoke iron plate, and the contact and separation directions of the auxiliary moving contact and the auxiliary static contact are parallel to the axis of the support section.

9. The high voltage DC relay according to claim 1, characterized in that: The auxiliary static component has a plurality of auxiliary static contacts; The plurality of auxiliary moving contacts are used to contact or separate from the plurality of auxiliary static contacts respectively.

10. The high voltage DC relay according to claim 9, characterized in that: Each of the auxiliary static contacts has an outer arc surface in contact with the auxiliary dynamic spring.

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