relay

Abstract

The relay includes a housing (1), at least one contact assembly (40), a push rod mechanism (20), and at least one first magnetic conductor (610). The housing (1) is provided with a mounting portion (11), and each contact assembly (40) includes a fixed contact and a movable contact, the fixed contact is fixedly connected to the housing (1), the movable contact is provided within the housing (1), the push rod mechanism (20) is movable relative to the housing (1) along a contact separation direction of the contacts of the contact assembly (40), the movable contact is provided on the push rod mechanism (20), and the push rod mechanism (20) movably moves the movable contact. The movable contact can be moved to bring it into contact with or separate from the corresponding fixed contact, the mounting portion (11) is located on the radial side of the push rod mechanism (20), the radial direction being perpendicular to the direction of movement of the push rod mechanism, at least one first magnetic conductor (610) corresponds one-to-one to at least one movable contact, and the first magnetic conductor (610) is fixedly connected to the mounting portion (11) and is located on the side of the movable contact facing the corresponding fixed contact.

Description

[Technical Field]

[0001] cross reference This disclosure claims priority to Chinese patent application No. 202211543693.X, filed on December 1, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the technical field of electronic control devices, and in particular to relays. [Background technology]

[0003] A relay is an electronic control device that is usually used in automatic control circuits, and has a control system (also called an input circuit) and a controlled system (also called an output circuit). In reality, a relay is an "automatic switch" that controls a large current with a relatively small current. Therefore, it plays a role in the circuit, such as automatic adjustment, safety protection, and conversion circuit.

[0004] If the short-circuit load is very large, the relay contacts may be repelled by the electromotive repulsive force generated by the short-circuit current, and if the contacts are repelled instantly, the relay may burn out or explode due to the action of a strong arc.

[0005] In the related art, relays are usually provided with a short-circuit prevention structure to prevent the contacts from being repelled. Specifically, a magnetic conductor is provided inside the relay, and when a short-circuit current acts on the magnetic conductor, a closed-loop magnetic field is formed, which magnetizes the magnetic conductor and generates an electromagnetic attraction force, which prevents the moving contact from being instantly repelled by the repulsive force generated by the short-circuit current, thereby avoiding burnout or explosion of the relay.

[0006] However, the fixed installation form of the magnetic conductor in the related art can only accommodate one set of movable contacts and fixed contacts, and cannot meet the requirement of preventing short circuits between two or more sets of movable contacts and fixed contacts. Summary of the Invention

[0007] In the embodiments of the present disclosure, a relay is provided that satisfies the requirement to prevent short circuits between two or more sets of movable contacts and fixed contacts.

[0008] A relay according to an embodiment of the present disclosure includes a housing, at least one contact assembly, a push rod mechanism, and at least one first magnetic conductor. The housing is provided with a mounting portion, and each contact assembly includes a fixed contact and a movable contact, the fixed contact is fixedly connected to the housing, the movable contact is provided within the housing, the push rod mechanism is movable relative to the housing along a contact separation direction of contacts of the contact assembly, the movable contact is provided on the push rod mechanism, and the push rod mechanism is capable of moving the movable contact to bring the movable contact into contact with or separate from the corresponding fixed contact, the mounting portion is located on a radial side of the push rod mechanism, the radial direction is perpendicular to the movement direction of the push rod mechanism, and the at least one first magnetic conductor corresponds one-to-one to the at least one movable contact, and the first magnetic conductor is fixedly connected to the mounting portion and located on a side of the movable contact facing the corresponding fixed contact.

[0009] According to some embodiments of the present disclosure, the housing includes a sidewall, the sidewall being located on a radial side of the push rod mechanism, and the mounting portion being formed on the sidewall.

[0010] According to some embodiments of the present disclosure, the sidewall surrounds the push rod mechanism along a circumferential direction of the push rod mechanism.

[0011] According to some embodiments of the present disclosure, the housing includes a base and an outer cover connected to the base, wherein the outer cover and the base form a chamber for accommodating the contact assembly, the push rod mechanism, and the first magnetic conductor, and the base and / or the outer cover form the sidewall.

[0012] According to some embodiments of the present disclosure, the first magnetic conductor includes a connection portion and an overhang portion, the connection portion is fixedly connected to the mounting portion and defines an imaginary plane perpendicular to the direction of movement of the push rod mechanism, the connection portion has a first orthogonal projection on the imaginary plane, the overhang portion has a second orthogonal projection on the imaginary plane, and the movable contactor has a third orthogonal projection on the imaginary plane, the first orthogonal projection does not overlap with the third orthogonal projection, and the second orthogonal projection at least partially overlaps with the third orthogonal projection.

[0013] According to some embodiments of the present disclosure, the first magnetic conductor has a flat plate structure.

[0014] According to some embodiments of the present disclosure, the first magnetic conductive body is inserted into the mounting portion of the housing along one insertion direction, the insertion direction being perpendicular to the direction of movement of the push rod mechanism.

[0015] According to some embodiments of the present disclosure, the mounting portion includes a first mounting hole, the first mounting hole penetrating the inner and outer surfaces of the housing, the hole wall of the first mounting hole having a first positioning wall structure and a first gap wall structure, the first magnetic conductor is inserted into the first mounting hole, a portion of the outer wall surface of the first magnetic conductor abuts against the first positioning wall structure, there is a gap between the portion of the outer wall surface of the first magnetic conductor and the first gap wall structure, and the gap is filled with a sealant.

[0016] According to some embodiments of the present disclosure, a portion of the outer wall surface of the first magnetic conductive body and the first positioning wall structure have an interference fit.

[0017] According to some embodiments of the present disclosure, the first positioning wall structure includes a first positioning wall and a second positioning wall, the first positioning wall and the second positioning wall being arranged opposite each other along the direction of movement of the push rod mechanism.

[0018] According to some embodiments of the present disclosure, the insertion direction of the first magnetic conductor is perpendicular to the length direction of the movable contact.

[0019] According to some embodiments of the present disclosure, the fixed contact is inserted into the housing along the insertion direction.

[0020] According to some embodiments of the present disclosure, the housing further includes a second mounting hole penetrating the inner and outer surfaces of the housing, the hole wall of the second mounting hole includes a second positioning wall structure and a second gap wall structure, the fixed contact is inserted into the second mounting hole, a portion of the outer wall surface of the fixed contact abuts the second positioning wall structure, there is a gap between the portion of the outer wall surface of the fixed contact and the second gap wall structure, and the gap is filled with a sealant.

[0021] According to some embodiments of the present disclosure, a portion of the outer wall surface of the fixed contact and the second positioning wall structure have an interference fit.

[0022] According to some embodiments of the present disclosure, the second positioning wall structure includes a third positioning wall and a fourth positioning wall, the third positioning wall and the fourth positioning wall being arranged opposite each other along the direction of movement of the push rod mechanism.

[0023] According to some embodiments of the present disclosure, the relay further includes at least one second magnetic conductor, the at least one second magnetic conductor corresponding to the at least one first magnetic conductor, and the second magnetic conductor is fixedly connected to a side of the movable contact facing away from the first magnetic conductor so as to form a magnetic conductive circuit between the corresponding first magnetic conductor and the second magnetic conductor in the width direction of the movable contact.

[0024] According to some embodiments of the present disclosure, the second magnetic conductor is U-shaped and covers the movable contactor along the width direction of the movable contactor.

[0025] According to some embodiments of the present disclosure, the second magnetic conductor includes at least two sub-magnetic conductors, each of which is U-shaped, and the movable contactor is provided with at least one through hole, and all of the at least two sub-magnetic conductors are connected to the side of the movable contactor facing away from the first magnetic conductor, and the sides of the at least two sub-magnetic conductors pass through the at least one through hole and are close to or in contact with the first magnetic conductor through the through hole, forming at least two separate magnetic conductive circuits in the width direction of the movable contactor.

[0026] According to some embodiments of the present disclosure, there is a gap between the two side portions located within one of the through-holes.

[0027] The above-described embodiment of the present disclosure has the following advantages or beneficial effects.

[0028] In the relay according to the embodiment of the present disclosure, the mounting portion on the housing is located on the radial side of the push rod mechanism, where the radial direction is perpendicular to the movement direction of the push rod mechanism. As a result, the position where the first magnetic conductor is fixedly connected to the mounting portion is also located on the side of the push rod mechanism. In other words, the position where the first magnetic conductor is connected to the mounting portion of the housing is not located above the movable contactor. As a result, after multiple first magnetic conductors are provided on the housing, each first magnetic conductor does not affect the operation of the push rod mechanism. Therefore, multiple first magnetic conductors corresponding to the multiple contact assemblies in the relay of this embodiment are provided, and each contact assembly 40 has a short-circuit prevention structure.

[0029] These and other features and advantages of the present disclosure will become more apparent from the detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a top view of a relay according to an embodiment of the present disclosure, where the outer cover is omitted. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 4] FIG. 2 is a conceptual diagram showing the relative positions of a first orthogonal projection, a second orthogonal projection, and a third orthogonal projection on a virtual plane. [Figure 5] FIG. 3 is a cross-sectional view taken along line CC in FIG. 2. [Figure 6] FIG. 6 is a partial enlarged view of X1 in FIG. 5. [Figure 7] FIG. 6 is a partial enlarged view taken at X2 in FIG. 5. [Figure 8] FIG. 2 is a schematic diagram of a push rod, a yoke clamp, a first magnetic conductor, a second magnetic conductor, and a contact assembly according to the first embodiment of the present disclosure after assembly. [Figure 9] FIG. 2 is a schematic diagram of a first magnetic conductive body, a second magnetic conductive body, and a contact assembly according to a first embodiment of the present disclosure after assembly. [Figure 10] FIG. 10 is a schematic view showing a movable contactor and a second magnetic conductive body according to a second embodiment of the present disclosure from one viewpoint after assembly. [Figure 11] FIG. 10 is a schematic view showing the movable contactor and the second magnetic conductor according to the second embodiment of the present disclosure after assembly, as viewed from another angle. [Figure 12] FIG. 10 is a schematic diagram showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a third embodiment of the present disclosure, viewed from one viewpoint after being assembled. [Figure 13] FIG. 11 is a schematic diagram showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a third embodiment of the present disclosure, viewed from another perspective after being assembled. [Figure 14] FIG. 14 is a cross-sectional view taken along line DD in FIG. [Figure 15] FIG. 10 is a schematic diagram showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a fourth embodiment of the present disclosure, viewed from one viewpoint after assembly. [Figure 16]FIG. 10 is a schematic diagram showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a fourth embodiment of the present disclosure, viewed from another perspective after being assembled. [Figure 17] FIG. 17 is a cross-sectional view taken along line EE in FIG. [Figure 18] FIG. 11 is a schematic diagram showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a fifth embodiment of the present disclosure, viewed from one viewpoint after assembly. [Figure 19] FIG. 11 is a schematic view showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a fifth embodiment of the present disclosure, viewed from another perspective after being assembled. [Figure 20] FIG. 20 is a cross-sectional view taken along line FF in FIG. 19. [Figure 21] FIG. 13 is a schematic view from one viewpoint after assembling a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a sixth embodiment of the present disclosure. [Figure 22] FIG. 13 is a schematic view of the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the sixth embodiment of the present disclosure, viewed from another perspective after they have been assembled. [Figure 23] FIG. 23 is a cross-sectional view taken along line GG in FIG. 22. [Figure 24] FIG. 13 is a schematic view from one viewpoint after assembling a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a seventh embodiment of the present disclosure. [Figure 25] FIG. 13 is a schematic view of the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the seventh embodiment of the present disclosure, viewed from another viewpoint after they are assembled. [Figure 26] FIG. 26 is a cross-sectional view taken along line HH in FIG. 25. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, by providing these embodiments, the present disclosure will be comprehensive and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. In the drawings, the same reference numerals represent the same or similar components, and therefore detailed description thereof will be omitted.

[0032] As shown in FIGS. 1 to 3, FIG. 1 is a plan view of a relay according to an embodiment of the present disclosure, in which the outer cover is omitted. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. The relay according to the embodiment of the present disclosure includes a housing 1, a push rod mechanism 20, a magnetic path mechanism 30, and a contact assembly 40. In the embodiment of the present disclosure, the housing 1 is the outer shell of the relay. The push rod mechanism 20, the magnetic path mechanism 30, and the contact assembly 40 are provided inside the housing 1, and the magnetic path mechanism 30 controls the contacts of the contact assembly 40 to make or separate contacts via the push rod mechanism 20.

[0033] It should be understood that the terms "comprises" and "having," and any variations thereof, in the embodiments of the present disclosure are intended to be inclusive and non-exclusive. 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, in the alternative, include steps or units not listed, or may further include other steps or assemblies inherent to the process, method, product, or apparatus.

[0034] The housing 1 may include a base 10 and an outer cover (not shown), which is connected to the base 10 and forms a chamber for accommodating the push rod mechanism 20, the magnetic path mechanism 30 and the contact assembly 40.

[0035] The magnetic path mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 forms a chamber, and the bobbin 320 and the coil 330 are both provided within the chamber of the yoke structure 310. The coil 330 is wound around the outer periphery of the bobbin 320 to form a magnetic control circuit. The bobbin 320 has a center hole 321 provided in the contact separation direction of the contacts of the contact assembly 40, and the center hole 321 is provided for passing one end of the push rod mechanism 20 through.

[0036] For example, the yoke structure 310 includes a yoke clamp 311 and a U-shaped yoke 312, and the yoke clamp 311 is connected to the U-shaped yoke 312 to form a ring shape. The yoke clamp 311 has a through hole 3111 through which the push rod mechanism 20 passes.

[0037] Of course, in other embodiments, the yoke structure 310 can include a cylindrical yoke and a yoke clamp 311, with the cylindrical yoke connected to the yoke clamp 311 to jointly form a ring.

[0038] The magnetic path mechanism 30 further includes two permanent magnets 340, which are mounted on the bobbin 320 and positioned on either side of the direction of movement D3 of the push rod mechanism 20. The two permanent magnets 340 form a magnetically maintained magnetic path structure, which is advantageous for reducing power costs, extending lifespan, and improving stability.

[0039] Of course, other embodiments may not include permanent magnet 340.

[0040] 3, the push rod mechanism 20 is movable relative to the base 10 along a contact contact direction or separation direction of the contact assembly 40. The push rod mechanism 20 includes a push rod 210 and a core 220, and the core 220 is connected to the push rod 210. The core 220 is movable along the contact contact direction or separation direction by the action of a magnetic control circuit formed by a coil 330, which cooperates with the movement of the push rod 210 to control the contact contact or separation of the control contact assembly 40.

[0041] Continuing to refer to Figures 1 to 3, the contact assembly 40 includes movable contacts (410, 430) and fixed contacts (420, 440), the fixed contacts (420, 440) are fixedly attached to the base 10, the movable contacts (410, 430) are attached within the housing 1, and the movable contacts (410, 430) are attached to and follow the push rod mechanism 20.

[0042] It should be understood that the movable contacts (410, 430) and the push rod 210 are not limited to the assembly method described above, and will not be repeated here.

[0043] In this embodiment, the contact assemblies 40 are each composed of two sets of a first contact assembly 40a and a second contact assembly 40b, and the first contact assembly 40a and the second contact assembly 40b are arranged along the movement direction D3 of the push rod mechanism 20. The first contact assembly 40a is located close to the magnetic path mechanism 30, and the second contact assembly 40b is located away from the magnetic path mechanism 30.

[0044] The first contact assembly 40a includes a first movable contactor 410 and two first fixed contactors 420. The second contact assembly 40b includes a second movable contactor 430 and two second fixed contactors 440. Both ends of the first movable contactor 410 can contact or be separated from the two first fixed contactors 420, respectively, and both ends of the second movable contactor 430 can contact or be separated from the two second fixed contactors 440, respectively.

[0045] Of course, in other embodiments, the contact assemblies 40 may be a single set or other numbers.

[0046] Both ends of the movable contacts (410, 430) in the length direction D1 function as movable contacts, and the movable contacts may protrude from other parts of the movable contacts (410, 430) or may be flush with other parts. The parts of the movable contacts that come into contact with the fixed contacts (420, 440) function as fixed contacts, and the fixed contacts may protrude from other parts of the fixed contacts (420, 440) or may be flush with other parts.

[0047] 1, the first movable contactor 410 includes a first movable spring body 412 and a first movable contact 411, and the first movable contact 411 and the first movable spring body 412 have separate structures, and the first movable contact 411 and the first movable spring body 412 may be connected by crimping, but this is not limited to this. The first fixed contactor 420 includes a first fixed spring body 421 and a first fixed contact 422, and the first fixed contact 422 and the first fixed spring body 421 have separate structures, and the first fixed contact 422 and the first fixed spring body 421 may be connected by crimping, but this is not limited to this.

[0048] The second movable contactor 430 includes a second movable spring body 434 and a second movable contact 431, the second movable contact 431 and the second movable spring body 434 having separate structures, and the second movable contact 431 and the second movable spring body 434 may be connected by crimping, but are not limited to this. The second fixed contactor 440 includes a second fixed spring body 441 and a second fixed contact 442, the second fixed contact 442 and the second fixed spring body 441 having separate structures, and the second fixed contact 442 and the second fixed spring body 441 may be connected by crimping, but are not limited to this.

[0049] Of course, in other embodiments, the first movable contact 411 and the first movable spring body 412 may be an integral structure, the first fixed contact 422 and the first fixed spring body 421 may be an integral structure, the second movable contact 431 and the second movable spring body 434 may be an integral structure, or the second fixed contact 442 and the second fixed spring body 441 may be an integral structure.

[0050] It should be understood that in other embodiments the housing 1 may be a ceramic cover.

[0051] 2 , the housing 1 is provided with a mounting portion 11, which is located on a radial side of the push rod mechanism 20, and the radial direction is perpendicular to the movement direction D3 of the push rod mechanism 20. The relay of the embodiment of the present disclosure further includes at least one first magnetic conductor 610, which corresponds to a movable contact of the at least one contact assembly 40, i.e., is located on a side of the at least one movable contact facing a corresponding fixed contact. The first magnetic conductor 610 is fixedly connected to the mounting portion 11.

[0052] "At least one first magnetic conductor 610 corresponds to at least one contact assembly 40" means that the number of first magnetic conductors 610 corresponds to the number of contact assemblies 40 and that the first magnetic conductors 610 correspond to the positions of the contact assemblies 40. In this embodiment, since there are two contact assemblies 40, the number of first magnetic conductors 610 is also two, where one first magnetic conductor 610 corresponds to the first movable contact 410 of the first contact assembly 40a and the other first magnetic conductor 610 corresponds to the second movable contact 430 of the second contact assembly 40b.

[0053] In the relay of the embodiment of the present disclosure, the mounting portion 11 of the housing 1 is located on the radial side of the push rod mechanism 20, where the radial direction is perpendicular to the movement direction of the push rod mechanism 20. Therefore, it should be understood that the position where the first magnetic conductor 610 is fixedly connected to the mounting portion 11 is also located on the side of the push rod mechanism 20, i.e., the position where the first magnetic conductor 610 is connected to the mounting portion 11 of the housing 1 is not located above the movable contact. Therefore, after the relay is provided with multiple first magnetic conductors 610, each first magnetic conductor 610 does not affect the operation of the push rod mechanism 20. Therefore, multiple first magnetic conductors 610 corresponding to the multiple contact assemblies 40 in the relay of this embodiment are provided, and each contact assembly 40 is provided with a short-circuit prevention structure.

[0054] The housing 1 includes a top wall, a bottom wall, and a side wall, and the top wall and the bottom wall are arranged opposite each other along the direction of movement of the push rod mechanism 20, and the side wall is connected to the top wall and the bottom wall. The side wall is located on a radial side of the push rod mechanism 20, and the mounting portion 11 is formed on the side wall.

[0055] Furthermore, the side wall surrounds the push rod mechanism 20 in the circumferential direction of the push rod mechanism 20 .

[0056] It should be understood that the shape of the housing 1 may include various embodiments, for example, the housing 1 may be prismatic, cylindrical, etc., but is not limited thereto.

[0057] The base 10 and / or the outer cover of the housing 1 is provided with an attachment portion 11. Specifically, the attachment portion 11 may be formed only on the base 10, or the attachment portion 11 may be formed only on the outer cover, or, of course, the attachment portion 11 may be formed on both the base 10 and the outer cover.

[0058] 1 , the base 10 includes a base plate 130 and a side plate 140, the fixed contact is fixedly connected to the base plate 130, and the side plate 140 is connected to the base plate 130 and is located on a radial side of the push rod mechanism 20. When the mounting portion 11 is formed on the base 10, the mounting portion 11 is provided on the base plate 130 and / or the side plate 140 of the base 10. Specifically, the mounting portion 11 may be formed on the base plate 130, the mounting portion 11 may be formed on the side plate 140, or the mounting portion 11 may be formed on both the base plate 130 and the side plate 140.

[0059] It should be understood that in the embodiments of the present disclosure, the base plate 130 is defined as the portion of the base 10 that faces the circuit board when the relay is mounted on the circuit board.

[0060] As shown in FIG. 4, FIG. 4 is a conceptual diagram of the relative positions of a first orthogonal projection S1, a second orthogonal projection S2, and a third orthogonal projection S3 on a virtual plane P. Each first magnetic conductor 610 includes a connection portion 611 and an overhang portion 612, and the connection portion 611 is fixedly connected to the mounting portion 11 of the base 10. Here, one virtual plane P perpendicular to the movement direction D3 of the push rod mechanism 20 is defined, and the connection portion 611 has a first orthogonal projection S1 on the virtual plane P, the overhang portion 612 has a second orthogonal projection S2 on the virtual plane P, and the movable contact (410, 430) has a third orthogonal projection S3 on the virtual plane P. Since the first orthogonal projection S1 and the third orthogonal projection S3 do not overlap, the second orthogonal projection S2 and the third orthogonal projection S3 at least partially overlap.

[0061] The overhang portion 612 refers to the portion of the first magnetic conductive body 610 that is suspended within the relay and is not in contact with any part of the relay.

[0062] It should be understood that in the relay of the embodiment of the present disclosure, the first magnetic conductor 610 is provided above the movable contactor (410, 430), and when the movable contactor (410, 430) contacts the fixed contactor (420, 440), a current flows through the movable contactor (410, 430), thereby forming a magnetic conductive circuit surrounding the movable contactor (410, 430) on the outer periphery of the movable contactor (410, 430) in the width direction D2. Due to the presence of the first magnetic conductor 610, most of the magnetic field of the magnetic conductive circuit is concentrated in the first magnetic conductor 610, magnetizing the first magnetic conductor 610. This generates an attractive force along the contact pressure direction between the first magnetic conductor 610 and the movable contact (410, 430) through which current flows. This attractive force is superimposed on the contact pressure to generate a larger contact pressure, which can resist the electric repulsive force generated by the short-circuit current between the movable contact of the movable contact (410, 430) and the fixed contact of the fixed contact (420, 440), preventing the movable contact of the movable contact (410, 430) and the fixed contact of the fixed contact (420, 440) from being repelled.

[0063] Furthermore, the first magnetic conductor 610 is fixedly connected to the mounting portion 11 of the base 10 via the connection portion 611 and does not move in response to the push rod mechanism 20. Therefore, the attractive force of the movable contacts (410, 430) on the first magnetic conductor 610 acts on the base 10, and since the position of the base 10 is relatively fixed, the attractive force of the first magnetic conductor 610 is unrelated to the push rod mechanism 20. This prevents the movable contacts (410, 430) and fixed contacts (420, 440) from being repelled due to insufficient holding force of the push rod mechanism 20, thereby avoiding the relay from burning out or exploding.

[0064] Furthermore, since the first orthogonal projection S1 of the connection portion 611 where the first magnetic conductor 610 is fixedly connected to the base 10 on the virtual plane P and the second orthogonal projection S2 of the movable contact (410, 430) on the virtual plane P do not overlap, i.e., the position where the first magnetic conductor 610 is connected to the base 10 is not located above the movable contact (410, 430), at least one first magnetic conductor 610 can be provided on the base 10, and one first magnetic conductor 610 corresponds to at least one contact assembly 40, thereby realizing that each contact assembly 40 has a short-circuit prevention structure.

[0065] As an example, the first magnetic conductive body 610 may have a flat plate structure. Of course, in other embodiments, the first magnetic conductive body 610 may have other regular or irregular shapes.

[0066] As shown in FIG. 2, the connecting portion 611 is inserted into the mounting portion 11 of the base 10 along an insertion direction D4, which is perpendicular to the movement direction D3 of the push rod mechanism 20.

[0067] In this embodiment, the connection portion 611 is inserted into the base 10 along an insertion direction D4 perpendicular to the movement direction D3 of the push rod mechanism 20. When the first magnetic conductor 610 has a plate-like structure, the first magnetic conductor 610 is perpendicular to the movement direction D3 of the push rod mechanism 20. That is, one end of the first magnetic conductor 610 where the connection portion 611 is provided is connected to the base 10, and one end of the first magnetic conductor 610 where the overhang portion 612 is provided extends along the opposite direction to the insertion direction D4 until the overhang portion 612 at least partially overlaps with the movable contact (410, 430) in the movement direction D3 of the push rod mechanism 20.

[0068] Attaching the first magnetic conductive body 610 to the base 10 by insertion simplifies the assembly method of the first magnetic conductive body 610. Of course, in other embodiments, the first magnetic conductive body 610 may be connected to the base 10 by a connection method such as adhesive bonding or welding.

[0069] Furthermore, the insertion direction D4 of the first magnetic conductive body 610 is perpendicular to the length direction D1 of the movable contacts (410, 430). That is, spatially, the first magnetic conductive body 610 is perpendicular to the movable contacts (410, 430).

[0070] It should be understood that when the movable contacts (410, 430) are energized, a magnetic conductive circuit formed on the outer periphery of the movable contacts (410, 430) runs along the width of the movable contacts (410, 430). Because the first magnetic conductive body 610 is perpendicular to the movable contacts (410, 430), the magnetic conductive circuit runs along the length direction D1 of the overhanging portion 612 of the first magnetic conductive body 610, and most of the overhanging portion 612 is magnetized, generating a stronger attractive force between the first magnetic conductive body 610 and the movable contacts (410, 430) through which current flows.

[0071] As shown in Figures 2, 5, and 6, Figure 5 is a cross-sectional view taken along line CC in Figure 2. Figure 6 is a partially enlarged view of X1 in Figure 5. The mounting portion 11 includes a first mounting hole 110, which penetrates the inner and outer surfaces of the housing 1. The hole wall of the first mounting hole 110 is provided with a first positioning wall structure 111 and a first gap wall structure 112. The first magnetic conductor 610 is inserted into the first mounting hole 11, and a portion of the outer wall surface of the first magnetic conductor 610 abuts against the first positioning wall structure 111. A gap is formed between the portion of the outer wall surface of the first magnetic conductor 610 and the first gap wall structure 112, and this gap is filled with a sealant.

[0072] In this embodiment, the first mounting hole 110 is formed in the base 10 and penetrates through the inner surface and bottom surface of the base 10 .

[0073] In the embodiment of the present disclosure, the assembly process of the first magnetic conductive body 610 and the base 10 is as follows: first, preliminary positioning is performed between the first magnetic conductive body 610 and the first mounting hole 110 of the base 10 via the first positioning wall structure 111; then, a sealant is filled into the gap between the first magnetic conductive body 610 and the gap wall structure of the first mounting hole 110, thereby completing the sealed assembly of the first magnetic conductive body 610 and the base 10. Meanwhile, a portion of the outer wall surface of the first magnetic conductive body 610 abuts against the positioning wall structure 111, thereby realizing the preliminary positioning of the first magnetic conductive body 610. On the other hand, there is a gap between a portion of the outer wall surface of the first magnetic conductive body 610 and the gap wall structure 112. By utilizing the siphon effect, the sealant rises from the bottom side of the base 10 along the gap toward the inner side of the base 10 and up to the opening of the first mounting hole 110, filling the gap and further enhancing the sealing and positioning strength between the first magnetic conductive body 610 and the base 10. At the same time, the sealant has a higher melting resistance than plastic materials, which can improve the welding heat resistance of the relay product. Compared to conventional techniques, the embodiments of the present disclosure reduce the number of dispensing steps, effectively reducing costs and improving assembly efficiency.

[0074] 6, the first positioning wall structure 111 includes a first positioning wall 113 and a second positioning wall 114, which are arranged opposite to each other along the movement direction D3 of the push rod mechanism 20. The first positioning wall 113 and the second positioning wall 114 respectively abut against the first magnetic conductor 610, thereby further restricting the degree of freedom of the first magnetic conductor 610 in the movement direction D3 of the push rod mechanism 20.

[0075] It should be understood that the shapes of the first positioning wall 113 and the second positioning wall 114 are adapted to the shape of the outer periphery of the first magnetic conductive body 610. For example, if the cross-sectional shape of the first magnetic conductive body 610 is rectangular, the first positioning wall 113 and the second positioning wall 114 may be flat. Of course, in other embodiments, if the cross-sectional shape of the connection portion 611 of the first magnetic conductive body 610 is circular, the shapes of the first positioning wall 113 and the second positioning wall 114 may be arc surfaces.

[0076] A portion of the outer wall surface of the first magnetic conductive body 610 is in an interference fit with the first positioning wall structure 111. In the embodiment of the present disclosure, the first magnetic conductive body 610 is in an interference fit with the first positioning wall 113 and the second positioning wall 114, respectively. Of course, in other embodiments, a zero-clearance fit between the portion of the outer wall surface of the first magnetic conductive body 610 and the first positioning wall structure 111 can also be adopted.

[0077] 2, the fixed contacts (420, 440) are inserted into the base 10 along an insertion direction D4. By inserting both the fixed contacts (420, 440) and the first magnetic conductor 610 into the base 10 along the insertion direction D4, the fixed contacts (420, 440) and the first magnetic conductor 610 can be attached to the base 10 in the same process, thereby saving assembly time.

[0078] 2, 5 and 7, the base 10 further includes a second mounting hole 120 penetrating its inner surface and bottom surface, and the hole wall of the second mounting hole 120 includes a second positioning wall structure 121 and a second gap wall structure 122. The fixed contacts (420, 440) are inserted into the second mounting hole 120, and a portion of the outer wall surface of the fixed contacts (420, 440) abuts against the second positioning wall structure 121. A gap exists between a portion of the outer wall surface of the fixed contacts (420, 440) and the second gap wall structure 122, and this gap is filled with a sealant.

[0079] The assembly process of the fixed contacts (420, 440) and the base 10 can refer to the assembly process of the first magnetic conductor 610 and the base 10, that is, the fixed contacts (420, 440) and the second positioning wall structure 121 of the second mounting hole 120 are first pre-positioned, and then the gap between the fixed contacts (420, 440) and the second gap wall structure 122 is filled with sealant.

[0080] As a result, the fixed contacts (420, 440) and the first magnetic conductor 610 can be assembled to the base 10 in the same dispensing process, which significantly improves assembly efficiency.

[0081] The second positioning wall structure 121 includes a third positioning wall 123 and a fourth positioning wall 124, which are arranged opposite each other along the movement direction D3 of the push rod mechanism 20. The third positioning wall 123 and the fourth positioning wall 124 abut against the fixed contacts (420, 440), respectively, thereby further restricting the degree of freedom of the fixed contacts (420, 440) in the movement direction D3 of the push rod mechanism 20.

[0082] It should be understood that the shapes of the third positioning wall 123 and the fourth positioning wall 124 are adapted to the outer shape of the lead leg of the fixed contact. For example, if the cross-sectional shape of the lead leg of the fixed contact is rectangular, the third positioning wall 123 and the fourth positioning wall 124 may be flat. Of course, in other embodiments, if the cross-sectional shape of the lead leg of the fixed contact is circular, the shapes of the third positioning wall 123 and the fourth positioning wall 124 may be arcuate.

[0083] A portion of the outer wall surface of the fixed contacts (420, 440) is in an interference fit with the second positioning wall structure 121. In the embodiment of the present disclosure, the portion of the outer wall surface of the fixed contacts (420, 440) is in an interference fit with the third positioning wall 123 and the fourth positioning wall 124, respectively. Of course, in other embodiments, a zero-clearance fit can also be adopted between the portion of the outer wall surface of the fixed contacts (420, 440) and the second positioning wall structure 121.

[0084] As described above, preliminary positioning of the first magnetic conductor 610 and the fixed contacts (420, 440) is performed by abutting a portion of the outer wall surface of the first magnetic conductor 610 against the first positioning wall structure 111 and abutting the fixed contacts (420, 440) against the second positioning wall structure 121 (dispensing is not required in the preliminary positioning step). Then, dispensing is performed from the bottom side of the base 10 into the gap between the first magnetic conductor 610 and the first gap wall structure 112 and the gap between the fixed contacts (420, 440) and the second gap wall structure 122. At the same time, dispensing can also be performed into the slit between the outer cover and the base 10.

[0085] As a result, in the embodiment of the present disclosure, dispensing can be performed along one dispensing direction to the slit between the first magnetic conductor 610 and the base 10, the slit between the fixed contacts (420, 440) and the base 10, and the slit between the outer cover and the base 10, greatly improving dispensing efficiency. Of course, when dispensing, dispensing can also be performed simultaneously to the slit between the lead leg of the coil and the base 10, and the slit between the lead leg of the auxiliary contact and the base 10.

[0086] 8 and 9, Fig. 8 is a schematic diagram of the push rod 210, the yoke clamp 311, the first magnetic conductive body 610, the second magnetic conductive body 620, and the contact assembly 40 according to the first embodiment of the present disclosure after assembly. Fig. 9 is a schematic diagram of the first magnetic conductive body 610, the second magnetic conductive body 620, and the contact assembly 40 according to the first embodiment of the present disclosure after assembly. The relay further includes at least one second magnetic conductive body 620, where the at least one second magnetic conductive body 620 corresponds to the at least one first magnetic conductive body 610.

[0087] The second magnetic conductor 620 is fixedly connected to the side of the movable contact (410, 430) facing away from the first magnetic conductor 610, and forms a magnetic conductive circuit between the corresponding first magnetic conductor 610 and second magnetic conductor 620 in the width direction D2 of the movable contact (410, 430).

[0088] It should be understood that the phrase "at least one second magnetic conductive body 620 corresponds to at least one first magnetic conductive body 610" means that the number of second magnetic conductive bodies 620 corresponds to the number of first magnetic conductive bodies 610, and the second magnetic conductive bodies 620 correspond to the positions of the first magnetic conductive bodies 610. In this embodiment, the number of first magnetic conductive bodies 610 and second magnetic conductive bodies 620 is two, but is not limited to this.

[0089] When both ends of the movable contacts (410, 430) come into contact with the fixed contacts (420, 440), the second magnetic conductor 620, which operates together with the movable contacts (410, 430), comes into proximity with or into contact with the first magnetic conductor 610, thereby forming a magnetic conductive circuit between the first magnetic conductor 610 and the second magnetic conductor 620 that surrounds the movable contacts (410, 430). When a short-circuit current flows through the movable contacts (410, 430), an attractive force is generated between the first magnetic conductor 610 and the second magnetic conductor 620 along the contact pressure direction, and this attractive force is superimposed on the contact pressure to generate a larger contact pressure, which can resist the electric repulsive force generated by the short-circuit current between the movable contacts of the movable contacts (410, 430) and the fixed contacts of the fixed contacts (420, 440), preventing the movable contacts of the movable contacts (410, 430) and the fixed contacts of the fixed contacts (420, 440) from repelling each other, thereby improving short-circuit prevention capability.

[0090] Furthermore, the first magnetic conductor 610 and the second magnetic conductor 620 are positioned on both sides of the movable contact (410, 430), respectively. When the movable contact (410, 430) is energized, the attractive force generated between the first magnetic conductor 610 and the second magnetic conductor 620 is a direct electromagnetic attractive force, which is greater than the attractive force between the first magnetic conductor 610 and the movable contact (410, 430) after only the first magnetic conductor 610 is magnetized. Therefore, it can more strongly resist the electromechanical repulsive force generated by the short-circuit current between the movable contact (410, 430) and the fixed contact (420, 440), and effectively improve the short-circuit prevention ability.

[0091] The second magnetic conductive body 620 may be fixedly connected to the movable contacts (410, 430) by a crimping connection method, but is not limited to this.

[0092] The first magnetic conductive body 610 and the second magnetic conductive body 620 may be made of materials such as iron, cobalt, nickel, and alloys thereof.

[0093] The first magnetic conductor 610 may be linear, the second magnetic conductor 620 may be U-shaped, and the second magnetic conductor 620 may be arranged to cover the movable contacts (410, 430) along the width direction D2 of the movable contacts (410, 430), but is not limited to this.

[0094] 10 and 11, which are schematic diagrams respectively showing the movable contacts (410, 430) and the second magnetic conductive body 620 according to the second embodiment of the present disclosure from two different viewpoints after assembly. The commonalities between the second embodiment and the first embodiment will not be repeated, and the differences are as follows:

[0095] The second magnetic conductor 620 includes at least two sub-magnetic conductors 621, each of which is U-shaped and includes a base 622 and two side portions 623, which are connected to the base 622. The movable contacts (410, 430) are provided with at least one through hole 414, and the at least two sub-magnetic conductors 621 are all connected to the side of the movable contacts (410, 430) facing away from the first magnetic conductor 610, and the side portions 623 of the at least two sub-magnetic conductors 621 pass through the at least one through hole 414 and come close to or into contact with the first magnetic conductor 610 through the through hole 414, thereby forming at least two individual magnetic conductive circuits in the width direction D2 of the movable contacts (410, 430). At least two individual magnetic conductive circuits utilize increased magnetic pole surfaces at the positions of the corresponding through holes 414, and when a large fault current occurs in the movable contacts (410, 430), an attractive force is generated in the contact pressure direction to resist the electromotive repulsive force generated by the fault current between the movable contacts (410, 430) and the fixed contacts (420, 440).

[0096] Two separate magnetic conduction circuits means that the two magnetic conduction circuits do not interfere with each other, that is, the magnetic fluxes do not cancel each other out.

[0097] In this embodiment, the movable contacts (410, 430) are provided with one through hole 414, which is provided in the intermediate region between the two movable contacts of the movable contacts (410, 430). The second magnetic conductor 620 includes two sub-magnetic conductors 621, and the two sub-magnetic conductors 621 share one first magnetic conductor 610 to form two magnetic conductive circuits.

[0098] The two U-shaped sub-magnetic conductors 621 are arranged side by side along the width direction D2 of the movable contact (410, 430), and one side 623 of each sub-magnetic conductor 621 is drilled into the through hole 414 of the movable contact (410, 430).

[0099] In this embodiment, the top surface of the side portion 623 of each sub-magnetic conductor 621 is substantially flush with the side surface of the movable contacts (410, 430) facing the fixed contacts (420, 440).

[0100] In the embodiment of the present disclosure, the two U-shaped sub-magnetic conductors 621 have a total of four side portions 623, and the top surfaces of the four side portions 623 cooperate with the first magnetic conductor 610. Compared with having only one magnetic conductive circuit (having only two magnetic pole faces), assuming that the structural features of the second magnetic conductor 620 remain unchanged, in the embodiment of the present disclosure, this is equivalent to increasing the number of magnetic pole faces by two (equivalent to increasing the number of magnetic pole faces at the position of the through hole 414), which improves magnetic efficiency, increases suction force, and significantly improves short-circuit prevention ability.

[0101] There is a gap between the two side portions 623 located within one through-hole 414. This prevents the magnetic fluxes of the two magnetic conductive circuits from canceling each other out.

[0102] Of course, in other embodiments, the number of sub-magnetic conductors 621 may be three or more.

[0103] 12 to 14, Fig. 12 and Fig. 13 are schematic diagrams respectively showing the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the third embodiment of the present disclosure from two different viewpoints after assembly, and Fig. 14 is a cross-sectional view taken along line DD in Fig. 13. The commonalities between the third embodiment and the first embodiment will not be repeated, and the differences are as follows:

[0104] The movable contacts (410, 430) are each provided with one through hole 414, which is provided in the intermediate region between the two movable contacts of the movable contacts (410, 430). The second magnetic conductor 620 is E-shaped and has an intermediate protrusion 624, which is drilled in the through hole 414.

[0105] 15 to 17, Figures 15 and 16 are schematic diagrams respectively showing the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the fourth embodiment of the present disclosure from two different viewpoints after assembly, and Figure 17 is a cross-sectional view taken along line EE in Figure 16. The commonalities between the fourth embodiment and the first embodiment will not be repeated, and the differences are as follows:

[0106] The second magnetic conductor 620 is linear.

[0107] 18 to 20, Fig. 18 and Fig. 19 are schematic diagrams respectively showing the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the fifth embodiment of the present disclosure from two different viewpoints after assembly, and Fig. 20 is a cross-sectional view taken along line FF in Fig. 19. The commonalities between the fifth embodiment and the first embodiment will not be repeated, and the differences are as follows:

[0108] The second magnetic conductor 620 has an L-shape.

[0109] 21 to 23, Fig. 21 and Fig. 22 are schematic diagrams respectively showing a movable contactor, a first magnetic conductor, and a second magnetic conductor according to a sixth embodiment of the present disclosure from two different viewpoints after assembly, and Fig. 23 is a cross-sectional view taken along line GG in Fig. 22. The commonalities between the sixth embodiment and the first embodiment will not be repeated, and the differences are as follows:

[0110] The first magnetic conductor 610 and the second magnetic conductor 620 are both L-shaped, with the first magnetic conductor 610 having a first short side 613 and the second magnetic conductor 620 having a second short side 625, which may or may not correspond to each other.

[0111] In this embodiment, the position of the first short side 613 corresponds to the side of the movable contact (410, 430) in the width direction D2, and the position of the second short side 625 corresponds to the other side of the movable contact (410, 430) in the width direction D2.

[0112] 24 to 26, Fig. 24 and Fig. 25 are schematic diagrams respectively showing the movable contactor, the first magnetic conductor, and the second magnetic conductor according to the seventh embodiment of the present disclosure from two different viewpoints after assembly, and Fig. 26 is a cross-sectional view taken along line HH in Fig. 25. The commonalities between the seventh embodiment and the second embodiment will not be repeated, and the differences are as follows:

[0113] The first magnetic conductor 610 is L-shaped. The second magnetic conductor 620 includes two sub-magnetic conductors 621, which are both linear. The two sub-magnetic conductors 621 are spaced apart along the width direction D2 of the movable contacts (410, 430), and the through-hole 414 is located between the two sub-magnetic conductors 621.

[0114] It should be understood that the examples / embodiments provided in the present disclosure can be combined with each other unless a contradiction occurs, and each example will not be described here.

[0115] In the embodiments of the present disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more unless expressly limited otherwise. Terms such as "attached," "contact," "connect," and "fixed" are all to be understood broadly. For example, the term "contact" may refer to a fixed connection, a detachable connection, or an integral connection, and the term "connected" may refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art can understand the meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.

[0116] In describing the embodiments of the present disclosure, the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate orientations or positional relationships based on those shown in the accompanying drawings, are intended merely to facilitate and simplify the description of the embodiments of the present disclosure, and do not imply that the indicated or implied device or unit must have a particular direction or be configured and operated in a particular orientation, and therefore should not be construed as a limitation on the embodiments of the present disclosure.

[0117] In the description herein, the terms "one embodiment," "some embodiments," "particular embodiments," and the like mean that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of the present disclosure. In this specification, denotative expressions 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.

[0118] The above is merely a preferred embodiment of the present disclosure, and is not intended to limit the present disclosure, and various modifications and variations are possible for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure are all intended to be included within the protection scope of the present disclosure. [Explanation of symbols]

[0119] 1. Housing 11. Mounting part 10. Bass 110, first mounting hole 111, the first positioning wall structure 112, first gap wall structure 113, the first positioning wall 114, the second positioning wall 120, second mounting hole 121 , the second positioning wall structure 122, second gap wall structure 123, the third positioning wall 124, the fourth positioning wall 130, base plate 140, side plate 20. Push rod mechanism 210, push rod 220, Core 30, magnetic path mechanism 310, yoke structure 311, yoke clamp 3111, through hole 312, U-shaped yoke 320, Bobbin 321, center hole 330, coil 340, permanent magnets 40, contact assembly 40a, first contact assembly 40b, second contact assembly 410, first movable contact 411, the first moving contact 412, the first movable spring body 414, through hole 420, first fixed contact 421, first fixed spring body 422, first fixed contact 430, second movable contact 431, second moving contact 434, second movable spring body 440, second fixed contact 441, second fixed spring body 442, second fixed contact 610 , the first magnetic conductor 611, connection part 612, overhang 613, first short side 620 - Second magnetic conductor 621, Sub-magnetic Conductor 622, base 623, side 624, intermediate protrusion 625, second short side P, imaginary plane D1, longitudinal direction D2, width direction D3, direction of movement D4, Insertion direction S1, the first orthogonal projection S2, the second orthogonal projection S3, the third orthogonal projection

Claims

1. A relay, a housing provided with a mounting portion; at least one contact assembly, each of the contact assemblies including a fixed contact and a movable contact, the fixed contact being fixedly connected to the housing, and the movable contact being provided in the housing; a push rod mechanism, the push rod mechanism being movable relative to the housing along a contact / separation direction of contacts of the contact assembly, the movable contacts being mounted on the push rod mechanism, the push rod mechanism being capable of moving the movable contacts to bring them into contact with or separate from the corresponding fixed contacts, the mounting portions being located on radial sides of the push rod mechanism, the radial direction being perpendicular to the movement direction of the push rod mechanism; and at least one first magnetic conductive body, which corresponds one-to-one with at least one movable contact of the at least one contact assembly, the first magnetic conductive body being fixedly connected to the mounting portion and located on a side of the movable contact facing the corresponding fixed contact; A relay characterized by:

2. The housing includes a sidewall, the sidewall being located on a radial side of the push rod mechanism, and the mounting portion being formed on the sidewall.

2. The relay according to claim 1.

3. The side wall surrounds the push rod mechanism in a circumferential direction of the push rod mechanism.

3. The relay according to claim 2.

4. The housing includes: With the base, an outer cover connected to the base, the outer cover and the base forming a chamber for accommodating the contact assembly, the push rod mechanism, and the first magnetic conductor, and the base and / or the outer cover forming the sidewall.

3. The relay according to claim 2.

5. The first magnetic conductor includes a connection portion and an overhang portion, the connection portion is fixedly connected to the mounting portion and defines an imaginary plane perpendicular to a direction of movement of the push rod mechanism, the connection portion has a first orthogonal projection on the imaginary plane, the overhang portion has a second orthogonal projection on the imaginary plane, and the movable contactor has a third orthogonal projection on the imaginary plane, the first orthogonal projection does not overlap with the third orthogonal projection, and the second orthogonal projection at least partially overlaps with the third orthogonal projection.

2. The relay according to claim 1.

6. The first magnetic conductor has a flat plate structure.

6. The relay according to claim 5.

7. The first magnetic conductor is inserted into the mounting portion of the housing along an insertion direction, the insertion direction being perpendicular to the direction of movement of the push rod mechanism.

2. The relay according to claim 1.

8. the mounting portion includes a first mounting hole, the first mounting hole penetrates the inner surface and the outer surface of the housing, and a hole wall of the first mounting hole includes a first positioning wall structure and a first gap wall structure; The first magnetic conductor is inserted into the first mounting hole, a portion of an outer wall surface of the first magnetic conductor is abutted against the first positioning wall structure, there is a gap between the portion of the outer wall surface of the first magnetic conductor and the first gap wall structure, and a sealant is filled in the gap.

8. The relay according to claim 7.

9. A part of the outer wall surface of the first magnetic conductor and the first positioning wall structure are tightly fitted together.

9. The relay according to claim 8.

10. The first positioning wall structure includes a first positioning wall and a second positioning wall, and the first positioning wall and the second positioning wall are disposed opposite to each other along the movement direction of the push rod mechanism.

9. The relay according to claim 8.

11. The insertion direction of the first magnetic conductor is perpendicular to the length direction of the movable contact.

8. The relay according to claim 7.

12. The fixed contact is inserted into the housing along the insertion direction.

8. The relay according to claim 7.

13. The housing further includes a second mounting hole penetrating the inner surface and the outer surface of the housing, and a hole wall of the second mounting hole includes a second positioning wall structure and a second gap wall structure; The fixed contact is inserted into the second mounting hole, a part of an outer wall surface of the fixed contact abuts against the second positioning wall structure, there is a gap between the part of the outer wall surface of the fixed contact and the second gap wall structure, and the gap is filled with a sealant.

13. The relay according to claim 12.

14. A part of the outer wall surface of the fixed contact and the second positioning wall structure are tightly fitted together.

14. The relay of claim 13.

15. The second positioning wall structure includes a third positioning wall and a fourth positioning wall, and the third positioning wall and the fourth positioning wall are disposed opposite to each other along the movement direction of the push rod mechanism.

14. The relay of claim 13.

16. the relay further includes at least one second magnetic conductive body, the at least one second magnetic conductive body corresponding to the at least one first magnetic conductive body; The second magnetic conductor is fixedly connected to the side of the movable contact facing away from the first magnetic conductor so as to form a magnetic conductive circuit between the corresponding first magnetic conductor and the corresponding second magnetic conductor in the width direction of the movable contact.

2. The relay according to claim 1.

17. The second magnetic conductor is U-shaped and covers the movable contactor along the width direction of the movable contactor.

17. The relay of claim 16.

18. The second magnetic conductor includes at least two sub-magnetic conductors, each of which is U-shaped, and the movable contactor is provided with at least one through-hole. All of the at least two sub-magnetic conductors are connected to the side of the movable contactor facing away from the first magnetic conductor, and the sides of the at least two sub-magnetic conductors pass through the at least one through-hole and are adjacent to or in contact with the first magnetic conductor through the through-hole, thereby forming at least two separate magnetic conductive circuits in the width direction of the movable contactor.

17. The relay of claim 16.

19. There is a gap between the two side portions located within one of the through holes.

19. The relay of claim 18.

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