Relay

Abstract

The relay comprises a yoke plate and a push rod component, the yoke plate is provided with a first through hole, and the first through hole penetrates through the yoke plate in the thickness direction of the yoke plate; the push rod component movably penetrates through the first through hole and comprises a base located on one side of the yoke plate in the thickness direction and a supporting part, the base is provided with a bottom face facing the yoke plate and a side face connected with the bottom face, and the supporting part is arranged on the side face in a protruding mode.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A high-voltage DC relay is a type of relay. The high-voltage DC relay in the related art includes a moving contact, a pair of stationary contacts, a push rod component, etc. The push rod component is used to drive the moving contact to move so as to contact or separate from the stationary contact to achieve the closing or opening of the relay.

[0004] However, when the relay is subjected to a large impact (for example, the impact force reaches 50g), the push rod component is prone to shake along its axial direction, causing the moving contact piece to shake as well, resulting in unstable contact resistance. Utility Model Content

[0005] The embodiment of the present application provides a relay to improve the problem of easy shaking of the push rod component existing in the related art.

[0006] The relay of the embodiment of the present application includes:

[0007] The yoke iron plate has a first through hole, wherein the first through hole penetrates the yoke iron plate along the thickness direction of the yoke iron plate;

[0008] A push rod component is movably inserted into the first through hole, and includes a base and a support portion located on one side of the thickness direction of the yoke plate. The base has a bottom surface facing the yoke plate and a side surface connected to the bottom surface, and the support portion is protruding from the side surface.

[0009] According to some embodiments of the present application, the support portion is also protruded from the bottom surface.

[0010] According to some embodiments of the present application, the support portion has an end surface facing away from the base and an inclined surface facing away from the yoke plate, and the inclined surface extends obliquely from the side surface toward the yoke plate to the end surface.

[0011] According to some embodiments of the present application, it also includes:

[0012] an auxiliary movable contact piece connected to the push rod member; and

[0013] The auxiliary lead-out terminal is fixedly arranged relative to the yoke iron plate, and the auxiliary movable contact piece is used to contact or separate from the auxiliary lead-out terminal.

[0014] According to some embodiments of the present application, when the coil of the relay is de-energized, a gap is provided between the surfaces of the support portion and the yoke iron plate facing each other, and the gap is smaller than an overtravel distance of the auxiliary moving contact piece.

[0015] According to some embodiments of the present application, when the coil of the relay is de-energized, the gap is equal to zero.

[0016] According to some embodiments of the present application, when the coil of the relay is de-energized, the auxiliary moving contact piece and the auxiliary lead-out terminal are in a closed state.

[0017] According to some embodiments of the present application, the auxiliary lead-out terminal is fixedly disposed on the yoke iron plate.

[0018] According to some embodiments of the present application, the auxiliary lead-out terminal has an auxiliary static contact in contact with the auxiliary moving contact piece, the auxiliary static contact has a first orthographic projection on a surface of the yoke plate facing the base, the base has a second orthographic projection on a surface of the yoke plate facing the base, and a line segment with the shortest distance exists between an edge of the first orthographic projection and an edge of the second orthographic projection;

[0019] The protruding direction of the support portion is parallel to the length direction of the line segment.

[0020] According to some embodiments of the present application, the number of the auxiliary lead-out terminals is two, and the two ends of the auxiliary movable contact piece in the length direction are used to contact or separate from the two auxiliary lead-out terminals respectively;

[0021] Each of the auxiliary lead-out terminals has an auxiliary static contact in contact with the auxiliary moving contact piece, the auxiliary static contact has a first orthographic projection on a side surface of the yoke plate facing the base, and the base has a second orthographic projection on a side surface of the yoke plate facing the base, and the second orthographic projection is located between the two first orthographic projections;

[0022] The protruding direction of the support portion is parallel to an arrangement direction of the two first orthographic projections.

[0023] According to some embodiments of the present application, the support portion extends from the side surface toward the auxiliary lead-out end.

[0024] According to some embodiments of the present application, the push rod member includes two pairs of the support portions, and the two pairs of the support portions are respectively arranged on both sides of the base along the arrangement direction of the two first orthographic projections;

[0025] The two end portions of the auxiliary moving contact piece in the length direction extend out from the side surfaces of the base respectively, and each of the end portions has a third orthographic projection on the surface of the yoke plate facing the base; the supporting portion has a fourth orthographic projection on the surface of the yoke plate facing the base; and one of the third orthographic projections is provided between the two fourth orthographic projections of each pair of supporting portions.

[0026] According to some embodiments of the present application, the side surface has two first side surfaces and two second side surfaces, the two first side surfaces are arranged opposite to each other along a first direction, and the two second side surfaces are arranged opposite to each other along a third direction; wherein the first direction is the arrangement direction of the two first orthographic projections, and the third direction is perpendicular to the first direction and parallel to the yoke iron plate;

[0027] Each of the first side surfaces is provided with two support portions symmetrically arranged along the third direction;

[0028] Along the first direction, the two support portions on one of the first side surfaces are symmetrically arranged with the two support portions on the other first side surface;

[0029] Partial outer surfaces of the two supporting portions located on the same first side surface are flush with the two second side surfaces respectively.

[0030] According to some embodiments of the present application, a plurality of the support portions are protruding from the side surface, and the plurality of the support portions are arranged in a centrally symmetrical manner with respect to the axis of the push rod member.

[0031] According to some embodiments of the present application, it also includes:

[0032] The housing has a pair of first through holes; the yoke iron plate and the push rod member are arranged in the housing;

[0033] a pair of stationary contacts, wherein the pair of stationary contacts are respectively disposed in the pair of first through holes; and

[0034] A yoke is arranged in the outer shell, and the yoke includes a connecting plate and two side plates, the two side plates are respectively connected to the two ends of the connecting plate along the first direction, and the ends of the two side plates away from the connecting plate are respectively connected to the two ends of the yoke plate along the first direction; the surfaces of the two side plates facing away from each other along the first direction are provided with protrusions, and the protrusions are in contact with the inner surface of the outer shell.

[0035] According to some embodiments of the present application, the relay further includes an auxiliary moving contact piece and an auxiliary lead-out terminal, wherein the auxiliary moving contact piece is connected to the push rod member for contacting or separating from the auxiliary lead-out terminal.

[0036] According to some embodiments of the present application, a groove is provided on a side of the support portion facing the yoke plate.

[0037] According to some embodiments of the present application, a gasket is further provided between the base and the yoke iron plate, the gasket has a third through-hole corresponding to the position of the first through-hole, and the push rod member is movably provided through the first through-hole and the third through-hole;

[0038] When the coil of the relay is de-energized, the pad contacts the base.

[0039] According to some embodiments of the present application, the support portion and the base are an integral structure.

[0040] One embodiment of the above application has at least the following advantages or beneficial effects:

[0041] In the relay of the embodiment of the present application, the push rod component includes a base and a support portion, and the support portion is convexly arranged on the side of the base. By arranging the support portion on the side of the base, the positive projection area of ​​the base on the side surface of the yoke iron plate facing the base is enlarged, thereby increasing the contact area between the base and the yoke iron plate, thereby improving the stability of the push rod component, and being able to suppress the shaking amount of the push rod component to a certain extent, ensuring the stability of the contact resistance.

[0042] Furthermore, the relay also includes an auxiliary moving contact and an auxiliary lead-out terminal, the auxiliary moving contact is connected to the push rod component, the support portion is in contact with the yoke iron plate or there is a gap between the two, when the relay is subjected to a large impact, causing the base to have a tendency to swing, the support portion can abut against the yoke iron plate to improve the stability of the base, thereby improving the stability of the auxiliary moving contact (especially the normally closed auxiliary contact), reducing the risk of abnormal shaking of the auxiliary moving contact, and improving the accuracy of auxiliary contact monitoring.

[0043] Furthermore, the support portion has an inclined surface, which enables the support portion to provide a resistance force in the opposite direction to the squeezing force. The resistance force can prevent the support portion from warping up to a certain extent, thereby maintaining the stability of the base.

[0044] Furthermore, the support portion and the yoke iron plate are not directly fitted, but there is a gap between them, and the gap is smaller than the overtravel distance of the auxiliary moving contact piece and the auxiliary lead-out terminal, so that the functions of preventing the support portion from being worn and stabilizing the base can be taken into account.

[0045] Furthermore, the protruding direction of the support portion is consistent with the length direction of the line segment, so that the support portion can effectively stabilize the base, and to a certain extent eliminates the problem of the base shaking due to a large impact on the relay.

[0046] Furthermore, the two side plates of the yoke have protrusions, which can contact the inner surface of the shell, thereby avoiding relative shaking between the yoke and the shell, thereby improving the reliability of the relay operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Shown is a schematic diagram of a relay according to an embodiment of the present application at one viewing angle.

[0048] Figure 2 Shown is the Figure 1 Section view along the AA cutting line.

[0049] Figure 3 It is shown that Figure 1 The schematic diagram after the outer casing and insulating cover are omitted.

[0050] Figure 4 Shown is a three-dimensional schematic diagram of the yoke iron plate, the base, the auxiliary moving contact piece and the auxiliary lead-out terminal after assembly.

[0051] Figure 5 The figure shows a top view of the yoke plate, the base, the auxiliary moving contact piece and the auxiliary lead-out terminal after being assembled.

[0052] Figure 6 Shown is the Figure 5 Section view along the BB cutting line.

[0053] Figure 7 It is shown that Figure 2 A partial enlarged view of point A in the middle.

[0054] Figure 8 Shown are schematic diagrams of the first to fourth orthographic projections.

[0055] Fig. 9 Shown is a schematic diagram of a yoke according to an embodiment of the present application.

[0056] The reference numerals are described as follows:

[0057] 10. housing; 11. outer cover; 111. first through hole; 12. base;

[0058] 21. Insulation cover; 211. Opening; 212. Inner cavity; 22. Static contact; 24. Frame; 25. Yoke iron plate; 251. First perforation; 26. Arc extinguishing assembly; 261. Yoke iron clamp; 262. Permanent magnet; 27. Metal cover;

[0059] 30, moving assembly; 31, moving contact piece; 32, first elastic member; 33, push rod member; 332, push rod; 333, contact bracket; 334, base; 3341, bottom surface; 3342, side surface; 3342a, first side surface; 3342b, second side surface; 335, support portion; 3351, end surface; 3352, inclined surface; 3353, groove; 336, gasket; 3361, third through hole;

[0060] 40, magnetic circuit portion; 41, moving iron core; 42, stationary iron core; 421, second through hole; 43, coil frame; 44, coil; 45, magnetic tube; 46, second elastic member; 47, yoke; 471, connecting plate; 472, side plate; 472a, inner side surface; 473, protrusion; 474, recess; 475, second through hole; 476, magnetic conductive portion;

[0061] 81. Auxiliary moving contact piece; 82. Auxiliary lead-out terminal;

[0062] S1, first orthographic projection; S2, second orthographic projection; S3, third orthographic projection; S4, fourth orthographic projection;

[0063] X1, first swing axis; X2, second swing axis;

[0064] D1, first direction; D2, second direction; D3, third direction. DETAILED DESCRIPTION

[0065] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0066] 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 device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0067] like Figure 1 and Figure 2 As shown, the relay of the embodiment of the present application includes a housing 10, an insulating cover 21, a yoke iron plate 25, a pair of stationary contacts 22, an arc extinguishing assembly 26, a moving assembly 30 and a magnetic circuit portion 40.

[0068] The housing 10 includes an outer cover 11 and a base 12 , which are connected to form a chamber for accommodating the yoke iron plate 25 , the arc extinguishing assembly 26 , the moving assembly 30 and the magnetic circuit part 40 .

[0069] It is understandable that the present application does not specifically limit the shapes of the outer cover 11 and the base 12. For example, in one embodiment, the outer cover 11 is a rectangular parallelepiped with an opening, and the base 12 is a plate-shaped base 12, which is buckled into the opening of the outer cover 11. The outer cover 11 and the base 12 can be connected by a snap-fit ​​method, but the invention is not limited thereto.

[0070] The insulating cover 21 has an inner cavity 212, a pair of static contacts 22 are installed on the top of the insulating cover 21, at least part of each static contact 22 extends into the inner cavity 212 of the insulating cover 21, and a static contact point is provided at the bottom of each static contact 22, and the static contact point can be integrally or separately provided at the bottom of the static contact 22. One static contact 22 serves as a terminal for current to flow in, and the other static contact 22 serves as a terminal for current to flow out.

[0071] In the embodiment of the present application, two openings 211 are formed on the top of the insulating cover 21, and each opening 211 is connected to the inner cavity 212. A pair of static contacts 22 are respectively disposed in the two openings 211. Moreover, each static contact 22 and the insulating cover 21 can be connected by welding, but the present invention is not limited thereto.

[0072] The top of the outer cover 11 is provided with a first through hole 111 corresponding to the position of the opening 211 , the static contact 22 is provided in the first through hole 111 , and one end of the static contact 22 extends out of the outer surface of the outer cover 11 .

[0073] It can be understood that the insulating cover 21 can be made of ceramic material, that is, the insulating cover 21 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 21 can also be made of plastic material.

[0074] In an embodiment of the present application, the insulating cover 21 is made of ceramic material, and the insulating cover 21 is connected to the yoke iron plate 25 through a frame piece 24. The frame piece 24 can be a metal piece with an annular structure, such as an iron-nickel alloy. One end of the frame piece 24 is connected to the opening edge of the insulating cover 21, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 24 is connected to the yoke iron plate 25, which can also be done by laser welding, brazing, resistance welding, gluing, etc. A frame piece 24 is arranged between the insulating cover 21 and the yoke iron plate 25 to facilitate the connection between the insulating cover 21 and the yoke iron plate 25.

[0075] Please continue reading Figure 2 The moving assembly 30 includes a moving contact piece 31 , a first elastic member 32 and a push rod member 33 .

[0076] For the convenience of explanation, the arrangement direction of the pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the movable contact piece 31 is defined as the second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The direction perpendicular to both the first direction D1 and the second direction D2 is defined as the third direction D3.

[0077] The movable contact piece 31 is disposed in the insulating cover 21 , and two ends of the movable contact piece 31 along the first direction D1 are respectively used to contact the bottom of a pair of stationary contacts 22 .

[0078] The push rod member 33 is movably disposed in the first through hole 251 of the yoke plate 25 , and part of the push rod member 33 extends out of the side surface of the yoke plate 25 facing the stationary contact 22 , and part of the push rod member 33 extends out of the side surface of the yoke plate 25 facing away from the stationary contact 22 .

[0079] The movable contact piece 31 is movably mounted on the portion of the push rod member 33 extending from the side surface of the yoke iron plate 25 facing the stationary contact 22. The first elastic member 32 is used to apply an elastic force to the movable contact piece 31 toward the stationary contact 22 to provide contact pressure.

[0080] As an example, the first elastic member 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic member 32 may be one or more. When the number of the first elastic member 32 is multiple, the multiple first elastic members 32 may all be springs, or all be leaf springs, or may be a combination of leaf springs and springs, and the present application does not make any special limitation on this.

[0081] The side surface of the yoke iron plate 25 facing away from the static contact 22 is also covered with a metal cover 27, and the metal cover 27 covers the first through hole 251 of the yoke iron plate 25. The push rod member 33 extending from the side surface of the yoke iron plate 25 facing away from the static contact 22 is inserted into the metal cover 27.

[0082] Please continue reading Figure 2 The magnetic circuit part 40 includes a moving iron core 41, a stationary iron core 42, a coil frame 43 and a coil 44. The coil frame 43 is in a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke iron plate 25 facing away from the stationary contact 22 and surrounds the outer periphery of the metal cover 27. The coil 44 is wound around the outer periphery of the coil frame 43.

[0083] The static iron core 42 is fixedly disposed in the metal cover 27, and part of the static iron core 42 is inserted into the first through hole 251. The static iron core 42 has a second through hole 421, and the second through hole 421 corresponds to the position of the first through hole 251, so that the push rod member 33 can be movably penetrated in the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed in the metal cover 27, and is arranged relative to the static iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33, and is used to be attracted by the static iron core 42 when the coil 44 is energized. The moving iron core 41 and the push rod member 33 can be connected by screwing, riveting, welding or other methods.

[0084] like Figure 2 As shown, the magnetic circuit part 40 further includes a second elastic member 46, which is located in the metal cover 27 and disposed between the static iron core 42 and the movable iron core 41, and is used to reset the movable iron core 41 when the coil 44 is powered off. At the same time, the elastic force of the second elastic member 46 can also hold the column push rod member 33 to prevent the push rod member 33 from shaking.

[0085] In one embodiment, the second elastic member 46 is a spring and is sleeved on the outer circumference of the push rod member 33 , but the present invention is not limited thereto.

[0086] It should be noted that when the coil 44 is energized, the stationary iron core 42 attracts the moving iron core 41 to move upward, and the moving iron core 41 can drive the push rod member 33 to move upward. When the moving contact piece 31 contacts the stationary contact 22, the moving contact piece 31 is stopped by the stationary contact 22, and the push rod member 33 will continue to move upward until the overtravel is completed.

[0087] During the overtravel process, the first elastic member 32 is squeezed by the push rod member 33 and can provide elastic force to the movable contact piece 31 to provide contact point pressure.

[0088] like Figure 2 As shown, the arc extinguishing part 26 includes a permanent magnet 262, and the permanent magnet 262 is arranged on the outer side of the insulating cover 21. By arranging the permanent magnet 262 on the outer periphery of the insulating cover 21, a magnetic field can be formed around the stationary contact 22 and the moving contact piece 31. Therefore, through the effect of the magnetic field, the arc generated between the stationary contact 22 and the moving contact 31 will be stretched in a direction away from each other, thereby achieving arc extinguishing.

[0089] The arc extinguishing part 26 further includes a yoke clamp 261, and a permanent magnet 262 is disposed between a side surface of the yoke clamp 261 facing the insulating cover 21 and an outer peripheral surface of the insulating cover 21. By designing that the yoke clamp 261 surrounds the permanent magnet 262, it is possible to prevent the magnetic field generated by the permanent magnet 262 from spreading outward and affecting the arc extinguishing effect.

[0090] In one embodiment, the yoke clip 261 is made of a soft magnetic material, which may include but is not limited to iron, cobalt, nickel, and alloys thereof.

[0091] It is understandable that the number of the yoke clips 261 can be one or two. When the number of the yoke clips 261 is one, the yoke clip 261 forms an annular structure surrounding the outer periphery of the insulating cover 21. When the number of the yoke clips 261 is two, each yoke clip 261 can be U-shaped and arranged opposite to each other along the first direction D1, and the two yoke clips 261 respectively surround the two ends of the insulating cover 21 along the first direction D1.

[0092] Please continue reading Figure 2 , the magnetic circuit part 40 also includes a yoke 47 and a magnetic tube 45. The yoke 47 includes a connecting plate 471 and two side plates 472, the two side plates 472 are respectively connected to the two ends of the connecting plate 471 along the first direction D1, and the two side plates 472 are arranged opposite to each other along the first direction D1. The connecting plate 471 is arranged on the side of the coil frame 43 facing away from the static contact 22, and the ends of the two side plates 472 away from the connecting plate 471 are respectively connected to the two ends of the yoke plate 25 along the first direction D1. The coil 44, the coil frame 43, the metal cover 27 and the moving iron core 41 are accommodated in the space surrounded by the yoke plate 25 and the connecting plate 471 and the two side plates 472 of the yoke 47. The magnetic tube 45 is sleeved on the outer periphery of the metal cover 27, and the magnetic tube 45 is located between the metal cover 27 and the coil frame 43, and is in contact with the yoke 47.

[0093] It can be seen that the yoke 47 of the embodiment of the present application is roughly formed into a U-shape. It is understandable that in other embodiments, the yoke 47 can also be cylindrical, that is, the connecting plate 471 is the bottom wall of the cylinder, and the side plate 472 is cylindrical and connected to the connecting plate 471.

[0094] like Figure 2 As shown, the push rod member 33 includes a base 334, a push rod 332 and a contact bracket 333. The base 334 is located on the side of the yoke iron plate 25 facing the static contact 22, and is used to support the first elastic member 32. The push rod 332 is movably provided in the first through hole 251 of the yoke iron plate 25, and one axial end of the push rod 332 is connected to the moving iron core 41, and the other axial end of the push rod 332 is provided with a base 334 and a contact bracket 333. The contact bracket 333 is connected to the base 334, and the moving contact piece 31 is movably connected to the contact bracket 333.

[0095] The push rod 332 and the moving iron core 41 may be connected by screwing, riveting, welding, etc., and this application does not impose any special limitation on this.

[0096] In one embodiment, the base 334 is made of plastic material, and the base 334, the push rod 332 and the contact bracket 333 are integrally formed, for example, connected into an integral part through an injection molding process, but not limited thereto.

[0097] Alternatively, if Figure 7 As shown, a gasket 336 can also be arranged between the base 334 and the yoke iron plate 25, and the gasket 336 can prevent the base 334 from directly contacting the yoke iron plate 25. Specifically, the gasket 336 is arranged on the side of the yoke iron plate 25 facing the base 334. The gasket 336 has a third through hole 3361 corresponding to the position of the first through hole 251, and the push rod 332 of the push rod member 33 is movably arranged in the first through hole 251 and the third through hole 3361; when the coil of the relay is de-energized, the gasket 336 contacts the base 334. In addition, the orthographic projection of the gasket 336 on the side surface of the yoke iron plate 25 facing the base 334 falls within the orthographic projection of the base 334 on the side surface of the yoke iron plate 25 facing the base 334. In other words, the size of the gasket 336 is smaller than the size of the base 334.

[0098] It can be seen that there is a gap between the base 334 and the yoke plate 25, and the edge of the base 334 is suspended. When the relay is subjected to a large impact (for example, the impact force reaches 50g, g represents the acceleration of gravity), the edge of the base 334 is suspended and is prone to swaying.

[0099] like Figures 3 to 5 As shown, the base 334 has a bottom surface 3341 facing the yoke iron plate 25 and a side surface 3342 connected to the bottom surface 3341. The push rod member 33 also includes a support portion 335, which is protruding from the side surface 3342; wherein, when the coil 44 of the relay is de-energized, the support portion 335 contacts the yoke iron plate 25 or there is a gap between the support portion 335 and the yoke iron plate 25.

[0100] In the embodiment of the present application, a support portion 335 is provided on the side surface 3342 of the base 334, so that the positive projection area of ​​the base 334 on the side surface of the yoke plate 25 facing the base 334 is enlarged, thereby increasing the contact area between the base 334 and the yoke plate 25, thereby improving the stability of the push rod member 33, and being able to suppress the shaking of the push rod member 33 to a certain extent, thereby ensuring the stability of the contact resistance.

[0101] The relay of the embodiment of the present application further includes an auxiliary moving contact piece 81 and an auxiliary lead-out terminal 82, wherein the auxiliary moving contact piece 81 is connected to the base 334, and the auxiliary lead-out terminal 82 is fixedly arranged relative to the yoke iron plate 25. The auxiliary moving contact piece 81 moves with the push rod member 33, and when the push rod member 33 moves, the auxiliary moving contact piece 81 is used to contact or separate from the auxiliary lead-out terminal 82. Through the contact or separation of the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82, the closed / open state of the contact between the moving contact piece 31 and the stationary contact 22 can be monitored.

[0102] In the relay of the embodiment of the present application, the push rod member 33 includes a base 334 and a support portion 335, the support portion 335 is convexly arranged on the side 3342 of the base 334, and the support portion 335 is in contact with the yoke iron plate 25 or there is a gap between the two. By providing the support portion 335, the positive projection area of ​​the base 334 on the side surface of the yoke iron plate 25 facing the base 334 is enlarged. When the relay is subjected to a large impact and causes the base 334 to have a tendency to swing, the support portion 335 can abut against the yoke iron plate 25 to improve the stability of the base 334, thereby improving the stability of the auxiliary moving contact piece 81, reducing the risk of abnormal shaking of the auxiliary moving contact piece 81, and improving the accuracy of auxiliary contact point monitoring.

[0103] In one embodiment, the support portion 335 and the base 334 may be an integral structure or a separate structure, which is not particularly limited in the present application. When the support portion 335 and the base 334 are an integral structure, the support portion 335, the base 334, the push rod 332 and the contact bracket 333 may be integrally formed, for example, by injection molding, so that the connection strength between the support portion 335 and the base 334 can be ensured, thereby ensuring the anti-swaying effect of the support portion 335.

[0104] In one embodiment, the support portion 335 is further protruded from the bottom surface 3341 near the side surface 3342 .

[0105] In the embodiment of the present application, the support portion 335 is not only protruded from the side surface 3342 of the base 334, but also protruded from the bottom surface 3341 of the base 334. In other words, the support portion 335 is disposed at the connection position between the side surface 3342 and the bottom surface 3341, so that when the relay is subjected to a large impact and the base 334 has a tendency to swing, the support portion 335 can play a good supporting role to maintain the stability of the base 334, thereby preventing the auxiliary movable contact piece 81 from swinging abnormally.

[0106] like Figure 4 and Figure 5 As shown, the support portion 335 has an end surface 3351 facing away from the base 334 and an inclined surface 3352 facing away from the yoke plate 25 . The inclined surface 3352 extends obliquely from the side surface 3342 toward the yoke plate 25 to the end surface 3351 .

[0107] When the relay is subjected to a large impact and the base 334 is swayed, the support portion 335 will abut against the yoke plate 25, and then the support portion 335 will be squeezed by the yoke plate 25, so that the support portion 335 has a tendency to move away from the yoke plate 25 (that is, the support portion 335 has an upward tilt). In the embodiment of the present application, the support portion 335 has an inclined surface 3352, and the inclined surface 3352 can enable the support portion 335 to provide a resistance force in the opposite direction of the squeezing force, and the resistance force can prevent the support portion 335 from tilting to a certain extent, thereby maintaining the stability of the base 334.

[0108] In one embodiment, the shape of the orthographic projection of the support portion 335 onto a target plane may be a right-angled trapezoid, a right-angled triangle, etc. The target plane is perpendicular to the third direction D3.

[0109] As an example, when the coil of the relay is de-energized and there is a gap between the surfaces of the support portion 335 and the yoke plate 25 facing each other, the gap is smaller than the overtravel distance of the auxiliary movable contact piece 81 .

[0110] It should be noted that the auxiliary movable contact piece 81 is made of elastic material. When the auxiliary movable contact piece 81 just contacts the auxiliary lead-out terminal 82, the movable assembly 30 does not stop but continues to move. During the continuous movement of the movable assembly 30, the auxiliary movable contact piece 81 is deformed by the auxiliary lead-out terminal 82. It can be seen that the overtravel distance of the auxiliary movable contact piece 81 is the distance that the movable assembly 30 continues to move after the auxiliary movable contact piece 81 just contacts the auxiliary lead-out terminal 82.

[0111] In the embodiment of the present application, when the coil of the relay is de-energized, the support portion 335 and the yoke iron plate 25 are not directly attached, but there is a gap between them, and the gap is smaller than the overtravel distance of the auxiliary movable contact piece 81. On the one hand, during the multiple reciprocating movements of the push rod member 33, since the support portion 335 and the yoke iron plate 25 are not in direct contact, the support portion 335 is prevented from being worn and losing the function of stabilizing the base 334; on the other hand, the gap is smaller than the overtravel distance of the auxiliary movable contact piece 81. Under this size, when the relay is subjected to a large impact and the base 334 is about to swing, the support portion 335 can abut against the yoke iron plate 25 in time to stabilize the base 334. Since the gap is smaller than the overtravel distance of the auxiliary movable contact piece 81, when the support portion 335 abuts against the yoke iron plate 25, the auxiliary movable contact piece 81 and the auxiliary lead-out terminal 82 will not be abnormally disconnected. Therefore, when the gap is smaller than the overtravel distance of the auxiliary movable contact piece 81 , it can prevent the support portion 335 from being worn, stabilize the base 334 , and avoid abnormal disconnection between the auxiliary movable contact piece 81 and the auxiliary lead-out terminal 82 .

[0112] In another embodiment, when the coil of the relay is de-energized, the support portion 335 is in contact with the yoke plate 25 (ie, the gap is equal to zero).

[0113] like Figure 5 As shown, a plurality of supporting portions 335 are protruding from the side surface 3342 of the base 334 , and the plurality of supporting portions 335 are centrally symmetrically arranged about the axis of the push rod member 33 . The supporting portions 335 extend from the side surface 3342 toward the auxiliary lead-out end 82 .

[0114] like Figure 5 As shown, the present application does not limit the shape of the base 334. For example, the base 334 may be a cube, a disc, etc. In the embodiment of the present application, the base 334 is a cube, and the side 3342 of the base 334 has two first side surfaces 3342a and two second side surfaces 3342b. The two first side surfaces 3342a are arranged opposite to each other along the first direction D1, and the two second side surfaces 3342b are arranged opposite to each other along the third direction D3. The two first side surfaces 3342a are both convexly provided with a support portion 335, and the two second side surfaces 3342b are not provided with a support portion 335. Of course, in another embodiment, the two first side surfaces 3342a and the two second side surfaces 3342b of the base 334 may be provided with a support portion 335.

[0115] Next, an example is taken in which the two first side surfaces 3342a are both provided with protruding support portions 335 , while the two second side surfaces 3342b are not provided with support portions 335 .

[0116] like Figure 5 As shown, the push rod member 33 includes two pairs of support portions 335, that is, the push rod member 33 includes four support portions 335. Each first side surface 3342a is provided with two support portions 335 symmetrically arranged along the third direction D3. Along the first direction D1, the two support portions 335 on one first side surface 3342a are symmetrically arranged with the two support portions 335 on the other first side surface 3342a. Part of the outer surface of the two support portions 335 located on the same first side surface 3342a is flush with the two second side surfaces 3342b respectively. In other words, the four support portions 335 are symmetrically arranged at the four corners of the base 334.

[0117] like Figure 6 As shown, a groove 3353 is provided on one side of the support portion 335 facing the yoke iron plate 25. By providing the groove 3353 in the support portion 335, the weight of the support portion 335 can be reduced, thereby reducing the weight of the push rod member 33, thereby avoiding the burden of increasing the power consumption of the coil due to the excessive weight of the push rod member 33.

[0118] It can be understood that, in one embodiment, the relay includes an auxiliary moving contact piece 81 and an auxiliary lead-out terminal 82, and the auxiliary moving contact piece 81 is in contact with or separated from the auxiliary lead-out terminal 82 to monitor the closed state of the moving contact piece 31 and the static contact 22; in another embodiment, the relay includes an auxiliary moving contact piece 81 and two auxiliary lead-out terminals 82, and the auxiliary moving contact piece 81 is in contact with or separated from the two auxiliary lead-out terminals 82 to monitor the closed state of the moving contact piece 31 and the static contact 22, for example, the two ends of the auxiliary moving contact piece 81 in the length direction are respectively in contact with or separated from the two auxiliary lead-out terminals 82, or, when the moving contact piece 31 is in contact with the static contact 22, the auxiliary moving contact piece 81 is in contact with one of the auxiliary lead-out terminals 82; when the moving contact piece 31 is separated from the static contact 22, the auxiliary moving contact piece 81 is in contact with the other auxiliary lead-out terminal 82, and is separated from the auxiliary lead-out terminal 82 that was previously in contact.

[0119] It can be understood that the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82 can be designed as a normally open type, a normally closed type or a conversion type. When it is a normally open type, the coil of the relay is powered off, and the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82 are in a disconnected state; when the relay is powered on, the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82 are in a closed state; when it is a normally closed type, the coil of the relay is powered off, and the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82 are in a closed state; when the relay is powered on, the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82 are in a disconnected state; when it is a conversion type, the coil of the relay is powered off, the auxiliary moving contact piece 81 and one of the auxiliary lead-out terminals 82 are in a closed state, and the auxiliary lead-out terminal 82 is disconnected; when the relay is powered on, the auxiliary moving contact piece 81 and the other auxiliary lead-out terminal 82 are in a closed state, and the auxiliary lead-out terminal 82 that was previously in contact is disconnected.

[0120] In addition, the auxiliary lead-out terminal 82 may be fixedly disposed on the yoke iron plate 25 or may be fixedly disposed on the insulating cover 21 , and this application does not limit this.

[0121] Next, an example is given in which a relay includes an auxiliary moving contact piece 81 and two auxiliary lead-out terminals 82 , the auxiliary moving contact piece 81 and the auxiliary lead-out terminals 82 are normally closed, and the auxiliary lead-out terminals 82 are fixedly arranged on the yoke iron plate 25 .

[0122] The part of each auxiliary lead-out terminal 82 that contacts the auxiliary moving contact piece 81 is an auxiliary static contact, and the two auxiliary static contacts of the two auxiliary lead-out terminals 82 are respectively located on both sides of the base 334 along the first direction D1, and the two auxiliary static contacts are arranged at intervals along the first direction D1. The protruding direction of the support portion 335 is parallel to the first direction D1.

[0123] Of course, in other embodiments, the spacing arrangement direction of the two auxiliary static contacts may also have an angle with the first direction D1.

[0124] like Figure 8 As shown, the auxiliary static contact has a first orthographic projection S1 on the side surface of the yoke plate 25 facing the base 334, and the base 334 has a second orthographic projection S2 on the side surface of the yoke plate 25 facing the base 334. There is a line segment L with the shortest distance between the edge of the first orthographic projection S1 and the edge of the second orthographic projection S2; the protruding direction of the support portion 335 is parallel to the length direction of the line segment L.

[0125] It can be understood that, in the embodiment of the present application, the arrangement direction of the two first orthographic projections S1 of the two auxiliary static contacts of the two auxiliary lead-out terminals 82 is parallel to the first direction D1.

[0126] It should be noted that when the relay is subjected to a large impact, the base 334 will swing, and the swing direction of the base 334 can be decomposed into the axis of the swing axis being parallel to the first direction D1 and the axis of the swing axis being parallel to the third direction D3. For the sake of convenience, the swing axis parallel to the first direction D1 is defined as the first swing axis X1, and the swing axis parallel to the third direction D3 is defined as the second swing axis X2. When the first orthographic projection S1 is located on one side of the second orthographic projection S2 along the first direction D1, the base 334 swings around the second swing axis X2, which will have a greater impact on the contact or separation state of the auxiliary movable contact piece 81 and the auxiliary lead-out terminal 82. When the first orthographic projection S1 is located on one side of the second orthographic projection S2 along the third direction D3, the base 334 swings around the first swing axis X1, which will have a greater impact on the contact or separation state of the auxiliary movable contact piece 81 and the auxiliary lead-out terminal 82.

[0127] like Figure 8 As shown, the first orthographic projection S1 is located on one side of the second orthographic projection S2 along the first direction D1. Therefore, in order to eliminate the problem of abnormal contact or separation between the auxiliary movable contact piece 81 and the auxiliary lead-out terminal 82 caused by the swinging of the base 334 around the second swing axis X2, the support portion 335 needs to be protruded from the side surface 3342 of the base 334 along the first direction D1, that is, the protruding direction of the support portion 335 is parallel to the first direction D1.

[0128] Therefore, the protruding direction of the support portion 335 of the embodiment of the present application is consistent with the length direction of the line segment L (ie, the first direction D1), so that the support portion 335 can effectively stabilize the base 334, and to a certain extent eliminate the problem of the base 334 shaking due to a large impact on the relay.

[0129] like Figure 5 and Figure 8As shown, the number of auxiliary lead-out terminals 82 is two, and the two first orthographic projections S1 of the two auxiliary lead-out terminals 82 on the surface of the side of the yoke iron plate 25 facing the base 334 are respectively located on the opposite sides of the second orthographic projection S2 along the first direction D1. The spacing arrangement direction of the two first orthographic projections S1 is parallel to the protruding direction of the support portion 335. In the embodiment of the present application, the two first orthographic projections S1 are respectively located on the two sides of the second orthographic projection S2 along the first direction D1.

[0130] As an example, the base 334 includes two pairs of support portions 335 , and the two pairs of support portions 335 are respectively disposed on both sides of the base 334 along the arrangement direction (first direction D1 ) of the two first orthographic projections S1 .

[0131] The two end portions of the auxiliary moving contact piece 81 in the length direction extend out from the side surface 3342 of the base 334 respectively, and each end has a third orthographic projection S3 on the side surface of the yoke plate 25 facing the base 334; the support portion 335 has a fourth orthographic projection S4 on the side surface of the yoke plate 25 facing the base 334; a third orthographic projection S3 is provided between the two fourth orthographic projections S4 of each pair of support portions 335.

[0132] like Figure 2 , Figure 3 and Fig. 9 As shown, the surfaces of the two side plates 472 facing away from each other along the first direction D1 are provided with protrusions 473 , and the protrusions 473 are in contact with the inner surface of the housing 10 .

[0133] In the relay of the embodiment of the present application, the two side plates 472 of the yoke 47 have protrusions 473, and the protrusions 473 can contact the inner surface of the housing 10. Without changing the size of other basic components of the relay, the thickness of the yoke 47 can be reduced, thereby reducing the material cost and avoiding the problem of relative shaking between the yoke 47 and the housing 10, thereby improving the reliability of the relay operation.

[0134] In addition, since the protrusion 473 of the yoke 47 is in contact with the inner surface of the housing 10, the yoke plate 25, the moving component 30, and the auxiliary moving contact piece 81 can all be stably set in the housing 10, thereby avoiding the shaking of the auxiliary moving contact piece 81 due to the shaking of the moving component 30, thereby improving the reliability of auxiliary contact monitoring.

[0135] It can be understood that, in one embodiment, the protrusion 473 contacts the inner surface of the outer cover 11; in another embodiment, the protrusion 473 contacts the inner surface of the base 12; in another embodiment, the protrusion 473 contacts the inner surface of the outer cover 11 and the inner surface of the base 12 at the same time.

[0136] As an example, the protrusion 473 is interference fit with the inner surface of the housing 10 to improve the reliability of the limiting connection between the protrusion 473 and the housing 10.

[0137] like Fig. 9 As shown, the surfaces of the two side plates 472 facing each other are inner side surfaces 472a, and the inner side surface 472a of each side plate 472 faces the coil frame 43. The inner side surface 472a is provided with a recess 474 at a position corresponding to the protrusion 473 along the first direction D1, and the recess 474 is recessed from the inner side surface 472a into the protrusion 473.

[0138] In the embodiment of the present application, the side plate 472 has a protrusion 473 and a recess 474 with corresponding positions, so that the protrusion 473 can be formed by stamping the side plate 472. The protrusion 473 formed by the stamping process has the advantages of easy processing and high processing efficiency.

[0139] like Figure 2 and Fig. 9 As shown, the connecting plate 471 has a second through hole 475 , and the second through hole 475 penetrates the connecting plate 471 along the thickness direction (second direction D2 ) of the connecting plate 471 . The magnetic conductive tube 45 is disposed in the second through hole 475 .

[0140] A magnetic conductive portion 476 is protruded from a surface of the connecting plate 471 facing the yoke plate 25 . The magnetic conductive portion 476 is disposed at an edge of the second through hole 475 , and is in contact with an outer circumference or an inner circumference of the magnetic conductive cylinder 45 .

[0141] It should be noted that when the relay is subjected to a large impact, the elastic force provided by the second elastic member 46 is not sufficient to maintain the stability of the push rod member 33, and the push rod member 33 is prone to shaking. In the related art, in order to solve the shaking problem of the push rod member 33, the stiffness coefficient of the second elastic member 46 is usually increased so that the second elastic member 46 can provide a larger elastic force to the moving iron core 41 and the push rod member 33, thereby improving the stability of the push rod member 33. However, as the stiffness coefficient of the second elastic member 46 increases, its initial elastic force will increase, resulting in the elastic force that the moving iron core 41 needs to overcome when it starts to move when the coil 44 is energized. Therefore, it is also necessary to increase the power consumption of the coil to overcome the elastic force of the second elastic member 46, which is not conducive to reducing the volume of the relay.

[0142] In the embodiment of the present application, a magnetic conductive portion 476 is provided on the surface of one side of the connecting plate 471 facing the yoke iron plate 25. The magnetic conductive portion 476 is in contact with the magnetic conductive cylinder 45, thereby improving the magnetic efficiency. Therefore, it is possible to increase the stiffness coefficient of the second elastic member 46 to improve the stability of the push rod assembly 33, and ensure the matching of the suction and reaction forces of the relay without increasing the power consumption of the coil.

[0143] like Fig. 9As shown, the magnetic conductive portion 476 is an annular structure. When the magnetic conductive portion 476 contacts the outer circumference of the magnetic conductive cylinder 45, the magnetic conductive portion 476 surrounds the outer circumference of the magnetic conductive cylinder 45. When the magnetic conductive portion 476 contacts the inner circumference of the magnetic conductive cylinder 45, the magnetic conductive cylinder 45 is sleeved on the outer circumference of the magnetic conductive portion 476.

[0144] Furthermore, the magnetic conductive portion 476 is a circular ring structure. Of course, in other embodiments, the ring formed by the magnetic conductive portion 476 can also be rectangular, elliptical, etc. Among them, when the magnetic conductive portion 476 is a ring structure, the specific shape of the ring structure can be determined according to the shape of the magnetic conductive cylinder 45.

[0145] It is understandable that, as a modified embodiment, the magnetic conductive portion 476 may not be an annular structure, but may include a plurality of small protrusions, wherein the plurality of small protrusions are arranged at intervals along the circumference of the magnetic conductive cylinder 45 , and each small protrusion is in contact with the magnetic conductive cylinder 45 .

[0146] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0147] In the relay of the embodiment of the present application, the push rod member 33 includes a base 334 and a support portion 335, and the support portion 335 is convexly arranged on the side 3342 of the base 334. By arranging the support portion 335 on the side 3342 of the base 334, the orthographic projection area of ​​the base 334 on the surface of the yoke iron plate facing the base 334 is enlarged, thereby increasing the contact area between the base 334 and the yoke iron plate 25, thereby improving the stability of the push rod member 33, and being able to suppress the shaking amount of the push rod member 33 to a certain extent, and ensuring the stability of the contact resistance.

[0148] Furthermore, the relay also includes an auxiliary moving contact piece 81 and an auxiliary lead-out terminal 82. The auxiliary moving contact piece 81 is connected to the push rod member 33, and the support portion 335 is in contact with the yoke iron plate 25 or there is a gap between the two. When the relay is subjected to a large impact, causing the base 334 to have a tendency to swing, the support portion 335 can abut against the yoke iron plate to improve the stability of the base 334, thereby improving the stability of the auxiliary moving contact piece 81 (especially the normally closed auxiliary contact), reducing the risk of abnormal shaking of the auxiliary moving contact piece 81, and improving the accuracy of auxiliary contact monitoring.

[0149] Furthermore, the support portion 335 has an inclined surface 3352 , which enables the support portion 335 to provide a resistance force in the opposite direction to the squeezing force. The resistance force can prevent the support portion 335 from warping up to a certain extent, thereby maintaining the stability of the base 334 .

[0150] Furthermore, the support portion 335 is not directly attached to the yoke iron plate, but there is a gap between the two, which is smaller than the overtravel distance of the auxiliary moving contact piece 81 and the auxiliary lead-out terminal 82, so as to prevent the support portion 335 from being worn and stabilize the base 334.

[0151] Furthermore, the protruding direction of the support portion 335 is consistent with the length direction of the line segment L, so that the support portion 335 can effectively stabilize the base 334, and to a certain extent eliminate the problem of the base 334 shaking due to a large impact on the relay.

[0152] Furthermore, the two side plates 472 of the yoke 47 have protrusions 473, and the protrusions 473 can contact the inner surface of the housing 10, thereby avoiding relative shaking between the yoke 47 and the housing 10, thereby improving the reliability of the relay operation.

[0153] Furthermore, a magnetic conductive portion 476 is provided on one side surface of the connecting plate 471 facing the yoke iron plate 25, and the magnetic conductive portion 476 is in contact with the magnetic conductive cylinder 45, thereby improving the magnetic efficiency. Therefore, it is possible to increase the stiffness coefficient of the second elastic member 46 to improve the stability of the push rod assembly 33, and ensure the matching of the suction and reaction forces of the relay without increasing the power consumption of the coil.

[0154] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0155] In the application embodiments, 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. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0156] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", "top", "bottom", etc. indicate directions or positional relationships 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 orientation. Therefore, they should not be understood as limitations on the application embodiments.

[0157] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0158] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: The yoke iron plate has a first through hole, wherein the first through hole penetrates the yoke iron plate along the thickness direction of the yoke iron plate; A push rod component is movably inserted into the first through hole, and includes a base and a support portion located on one side of the thickness direction of the yoke plate. The base has a bottom surface facing the yoke plate and a side surface connected to the bottom surface, and the support portion is protruding from the side surface.

2. The relay according to claim 1, characterized in that: The support portion is also protruding from the bottom surface.

3. The relay according to claim 1, characterized in that: The support portion has an end surface facing away from the base and an inclined surface facing away from the yoke plate, and the inclined surface extends obliquely from the side surface toward the yoke plate to the end surface.

4. The relay according to any one of claims 1 to 3, characterized in that: Also includes: An auxiliary moving contact piece connected to the push rod member; as well as The auxiliary lead-out terminal is fixedly arranged relative to the yoke iron plate, and the auxiliary movable contact piece is used to contact or separate from the auxiliary lead-out terminal.

5. The relay according to claim 4, characterized in that: When the coil of the relay is de-energized, a gap is provided between the surfaces of the support portion and the yoke iron plate facing each other, and the gap is smaller than the overtravel distance of the auxiliary moving contact piece.

6. The relay according to claim 5, characterized in that: When the coil of the relay is de-energized, the gap is equal to zero.

7. The relay according to claim 4, characterized in that: When the coil of the relay is de-energized, the auxiliary moving contact piece and the auxiliary lead-out terminal are in a closed state.

8. The relay according to claim 4, characterized in that: The auxiliary lead-out terminal is fixedly arranged on the yoke iron plate.

9. The relay according to claim 4, characterized in that: The auxiliary lead-out terminal has an auxiliary static contact in contact with the auxiliary moving contact piece, the auxiliary static contact has a first orthographic projection on a side surface of the yoke plate facing the base, the base has a second orthographic projection on a side surface of the yoke plate facing the base, and a line segment with the shortest distance exists between the edge of the first orthographic projection and the edge of the second orthographic projection; The protruding direction of the support portion is parallel to the length direction of the line segment.

10. The relay according to claim 4, characterized in that: The number of the auxiliary lead-out terminals is two, and the two ends of the auxiliary movable contact piece in the length direction are used to contact or separate from the two auxiliary lead-out terminals respectively; Each of the auxiliary lead-out terminals has an auxiliary static contact in contact with the auxiliary moving contact piece, the auxiliary static contact has a first orthographic projection on a side surface of the yoke plate facing the base, and the base has a second orthographic projection on a side surface of the yoke plate facing the base, and the second orthographic projection is located between the two first orthographic projections; The protruding direction of the support portion is parallel to an arrangement direction of the two first orthographic projections.

11. The relay according to claim 9 or 10, characterized in that: The supporting portion extends from the side surface toward the auxiliary lead-out end.

12. The relay according to claim 9 or 10, characterized in that: The push rod component comprises two pairs of support parts, and the two pairs of support parts are respectively arranged on both sides of the base along the arrangement direction of the two first orthographic projections; The two end portions of the auxiliary moving contact piece in the length direction extend out from the side surfaces of the base respectively, and each of the end portions has a third orthographic projection on the surface of the yoke plate facing the base; the supporting portion has a fourth orthographic projection on the surface of the yoke plate facing the base; and one of the third orthographic projections is provided between the two fourth orthographic projections of each pair of supporting portions.

13. The relay according to claim 12, characterized in that: The side surface has two first side surfaces and two second side surfaces, the two first side surfaces are arranged opposite to each other along a first direction, and the two second side surfaces are arranged opposite to each other along a third direction; wherein the first direction is the arrangement direction of the two first orthographic projections, and the third direction is perpendicular to the first direction and parallel to the yoke iron plate; Each of the first side surfaces is provided with two support portions symmetrically arranged along the third direction; Along the first direction, the two support portions on one of the first side surfaces are symmetrically arranged with the two support portions on the other first side surface; Partial outer surfaces of the two supporting portions located on the same first side surface are flush with the two second side surfaces respectively.

14. The relay according to claim 1, characterized in that: A plurality of the supporting parts are protruding from the side surface, and the plurality of the supporting parts are arranged in a central symmetric manner with respect to the axis of the push rod component.

15. The relay according to claim 1, characterized in that Also includes: The housing has a pair of first through holes; the yoke iron plate and the push rod member are arranged in the housing; a pair of stationary contacts, wherein the pair of stationary contacts are respectively disposed in the pair of first through holes; as well as A yoke is arranged in the outer shell, and the yoke includes a connecting plate and two side plates, the two side plates are respectively connected to the two ends of the connecting plate along the first direction, and the ends of the two side plates away from the connecting plate are respectively connected to the two ends of the yoke plate along the first direction; the surfaces of the two side plates facing away from each other along the first direction are provided with protrusions, and the protrusions are in contact with the inner surface of the outer shell.

16. The relay according to claim 15, characterized in that The relay further comprises an auxiliary moving contact piece and an auxiliary lead-out terminal, wherein the auxiliary moving contact piece is connected to the push rod component and is used for contacting or separating with the auxiliary lead-out terminal.

17. The relay according to claim 1, characterized in that: A groove is provided on one side of the support portion facing the yoke iron plate.

18. The relay according to claim 1, characterized in that A gasket is further provided between the base and the yoke plate, the gasket having a third through hole corresponding to the position of the first through hole, and the push rod member is movably provided through the first through hole and the third through hole; When the coil of the relay is de-energized, the pad contacts the base.

19. The relay according to claim 1, characterized in that The support portion and the base are an integrated structure.

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