Relay

Abstract

The invention provides a relay which comprises a coil frame, an iron core assembly and a magnetic conductive cylinder. The coil rack is provided with a through hole penetrating in the first direction. The iron core assembly is contained in the through hole and comprises a static iron core and a movable iron core which are arranged in the first direction, the area, corresponding to the static iron core, of the iron core assembly is defined as a first area, and the area, corresponding to the movable iron core, of the iron core assembly is defined as a second area; the magnetic conductive cylinder is partially accommodated in the through hole and is arranged between the movable iron core and the hole wall of the through hole; a first gap is formed between the position, corresponding to the first area, of the hole wall of the through hole and the first area, a second gap is formed between the magnetic conductive cylinder and the second area, and the first gap is smaller than the second gap. Through the above design, the first gap smaller than the second gap exists at least in a partial region between the through hole and the iron core assembly, so that when the magnetic conductive cylinder is inclined, the coil rack at the first gap is in contact with the static iron core first, thereby preventing the magnetic conductive cylinder from being in contact with the second region to extrude the movable iron core, and ensuring the stability of the relay.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrical control devices, and particularly to a relay. Background Art

[0002] A relay belongs to an electronic control device, which has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied to an automatic control circuit. The essence of a relay can be understood as an "automatic switch device" that uses a smaller current to control a larger current. Therefore, a relay is mainly used in a circuit to achieve functions such as automatic regulation, safety protection, and circuit conversion.

[0003] In the existing design of high-voltage DC relays, the magnetic circuit part of the relay includes components such as a coil, a magnetic guide cylinder, and an iron core assembly. The coil is wound around a coil bobbin, the iron core assembly is accommodated in a through hole of the coil bobbin, the iron core assembly includes a stationary iron core and a moving iron core arranged along the axial direction of the through hole, and the magnetic guide cylinder is sleeved between the moving iron core and the through hole. However, in the existing solution, the magnetic guide cylinder is likely to squeeze the moving iron core, causing the movement of the moving iron core to be stuck and affecting the stability of the movement function of the iron core assembly. Summary of the Invention

[0004] A main object of the present disclosure is to overcome at least one defect of the above-mentioned prior art, and to provide a relay in which the magnetic guide cylinder is not likely to squeeze the moving iron core.

[0005] To achieve the above object, the present disclosure adopts the following technical solutions:

[0006] According to one aspect of the present disclosure, there is provided a relay, which includes a coil bobbin, an iron core assembly, and a magnetic guide cylinder; the coil bobbin is provided with a through hole penetrating along a first direction; the iron core assembly is accommodated in the through hole and includes a stationary iron core and a moving iron core arranged along the first direction. Define the area of the iron core assembly corresponding to the stationary iron core as the first area, and define the area of the iron core assembly corresponding to the moving iron core as the second area; the magnetic guide cylinder is partially accommodated in the through hole and is arranged between the moving iron core and the hole wall of the through hole; wherein, there is a first gap between the position of the hole wall of the through hole corresponding to the first area and the first area, and there is a second gap between the magnetic guide cylinder and the second area, and the first gap is less than the second gap.

[0007] According to one embodiment of the present disclosure, the iron core assembly further includes a metal shell, the metal shell is partially accommodated in the through hole, and the stationary iron core and the moving iron core are respectively accommodated in the metal shell; wherein, the first area is the part of the metal shell corresponding to the stationary iron core, and the second area is the part of the metal shell corresponding to the moving iron core.

[0008] According to one embodiment of the present disclosure, a first protrusion is provided on a portion of the hole wall of the through hole corresponding to the first area, and the first gap is a gap between an end of the first protrusion facing away from the hole wall and an outer surface of the first area of the metal shell.

[0009] According to one embodiment of the present disclosure, the through hole has a first opening away from the magnetic conductive cylinder, the position of the static iron core is arranged corresponding to the position of the first opening, and the first protrusion is arranged at a position where the hole wall of the through hole is adjacent to the first opening.

[0010] According to one embodiment of the present disclosure, the first protrusion is an annular structure, and the first protrusion is arranged along the inner circumference of the through hole.

[0011] According to one embodiment of the present disclosure, at least two first protrusions are provided at a portion of the hole wall of the through hole corresponding to the first area, and the at least two first protrusions are arranged at intervals along the inner circumference of the through hole.

[0012] According to one embodiment of the present disclosure, along the first direction, the first protrusion and the second area are staggered.

[0013] According to one embodiment of the present disclosure, a chamfered structure is provided at an edge of one end of the first protrusion facing away from the hole wall of the through hole.

[0014] According to one of the embodiments of the present disclosure, along the radial direction of the through hole, the width of the static iron core is greater than the width of the moving iron core, and the periphery of the static iron core exceeds the periphery of the moving iron core.

[0015] According to one embodiment of the present disclosure, the core assembly also includes a metal shell, which is partially accommodated in the through hole, and the static iron core and the moving iron core are respectively accommodated in the metal shell; wherein the first area is the part of the metal shell corresponding to the static iron core, and the second area is the part of the metal shell corresponding to the moving iron core, and the width of the part of the metal shell corresponding to the first area is greater than the width of the part of the metal shell corresponding to the second area.

[0016] According to one embodiment of the present disclosure, the relay includes a yoke assembly, the yoke assembly includes a U-shaped yoke and a yoke plate, the U-shaped yoke includes two positioning contact portions arranged at intervals and a connecting portion connected between the two positioning contact portions, and the two ends of the yoke plate are respectively connected to one end of the two positioning contact portions facing away from the connecting portion.

[0017] According to one embodiment of the present disclosure, the U-shaped yoke and the yoke iron plate jointly enclose an accommodation space; wherein, the bobbin is disposed in the accommodation space, and the magnetic conduction cylinder is connected to the connection portion.

[0018] According to one embodiment of the present disclosure, wherein: the static iron core and the yoke iron plate are relatively independent components, and the static iron core is connected to the yoke iron plate; or, the static iron core and the yoke iron plate are an integral structure.

[0019] According to one embodiment of the present disclosure, wherein: the magnetic conduction cylinder and the U-shaped yoke are relatively independent components, and the magnetic conduction cylinder is connected to the connection portion; or, the magnetic conduction cylinder and the U-shaped yoke are an integral structure.

[0020] According to one embodiment of the present disclosure, two ends of the yoke iron plate are respectively riveted and connected to the two positioning contact portions.

[0021] According to one embodiment of the present disclosure, the first gap is greater than or equal to 0.

[0022] According to one embodiment of the present disclosure, a second protrusion is provided on the pore wall of the through hole, and the second protrusion abuts against the magnetic conduction cylinder to limit the movement of the magnetic conduction cylinder along the first direction.

[0023] As can be seen from the above technical solutions, the advantages and positive effects of the relay proposed by the present disclosure are as follows:

[0024] The relay proposed by the present disclosure includes a bobbin, an iron core assembly, and a magnetic conduction cylinder. The iron core assembly is accommodated in the through hole of the bobbin. The area of the iron core assembly corresponding to the static iron core is defined as the first area, and the area of the iron core assembly corresponding to the moving iron core is defined as the second area. The magnetic conduction cylinder is disposed between the moving iron core and the pore wall of the through hole. There is a first gap between the pore wall of the through hole corresponding to the first area and the first area, and there is a second gap between the magnetic conduction cylinder and the second area, and the first gap is smaller than the first gap. Through the above design, since there is at least a partial area between the through hole and the iron core assembly having a first gap smaller than the second gap, when the magnetic conduction cylinder is tilted, the bobbin at the first gap contacts the static iron core first, thereby avoiding the magnetic conduction cylinder contacting the second area and squeezing the moving iron core, and ensuring the stability of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By considering the following detailed description of the preferred embodiments of the present disclosure in conjunction with the accompanying drawings, various objects, features, and advantages of the present disclosure will become more apparent. The drawings are only illustrative diagrams of the present disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0026] Figure 1 is a schematic cross-sectional view of a relay shown according to an exemplary embodiment;

[0027] Figure 2 is Figure 1 a schematic cross-sectional view of the magnetic circuit part of the relay shown;

[0028] Figure 3 and Figure 4 are respectively schematic cross-sectional views of the magnetic circuit parts of relays shown according to two other exemplary embodiments;

[0029] Figure 5 is a schematic cross-sectional view of a relay shown according to another exemplary embodiment;

[0030] Figure 6 is Figure 5 a three-dimensional exploded schematic view of the partial structure shown.

[0031] The reference numerals are explained as follows:

[0032] 100. Coil holder;

[0033] 101. Through hole;

[0034] 110. First protrusion;

[0035] 111. Chamfer structure;

[0036] 120. Second protrusion;

[0037] 210. Stationary iron core;

[0038] 220. Moving iron core;

[0039] 230. Metal shell;

[0040] 300. Magnetic conduction cylinder;

[0041] 400. U-shaped yoke iron;

[0042] 410. Positioning contact part;

[0043] 411. Positioning protrusion;

[0044] 420. Connecting part;

[0045] 510. Yoke iron plate;

[0046] 511. Positioning groove;

[0047] 520. Frame piece;

[0048] 610. Moving contact;

[0049] 620. Stationary contact;

[0050] 710. First elastic member;

[0051] 720. Push rod member;

[0052] 730. Second elastic member;

[0053] 800. Insulating cover;

[0054] G1. First gap;

[0055] G2. Second gap;

[0056] W1 - W3. Width;

[0057] X. First direction;

[0058] Y. Second direction. Detailed implementation manners

[0059] Typical embodiments embodying the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various variations in different embodiments, all of which do not depart from the scope of the present disclosure, and the descriptions and drawings therein are for illustrative purposes in essence and not for limiting the present disclosure.

[0060] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part of the present disclosure, and in which different exemplary structures, systems, and steps capable of implementing various aspects of the present disclosure are shown by way of example. It should be understood that other specific solutions of components, structures, exemplary devices, systems, and steps can be used, and structural and functional modifications can be made without departing from the scope of the present disclosure. Moreover, although terms such as "above", "between", "inside", etc. may be used in this specification to describe different exemplary features and elements of the present disclosure, these terms are used herein only for convenience, for example, according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three - dimensional direction of the structure to fall within the scope of the present disclosure.

[0061] The relay proposed by the present disclosure is described by taking the relay installed in a medium - high voltage module as an example. It is easy for those skilled in the art to understand that, in order to apply the relevant designs of the present disclosure to other types of relays, various modifications, additions, substitutions, deletions, or other changes are made to the following detailed implementation manners, and these changes are still within the scope of the principle of the relay proposed by the present disclosure.

[0062] Refer to Figure 1 and Figure 2 as shown, Figure 1 A cross - sectional schematic diagram of the relay proposed by the present disclosure is representatively shown, in which some structures such as the housing are hidden; Figure 2FIG. shows a cross-sectional schematic view of the magnetic circuit portion of the relay, and specifically magnifies two of its parts to show the enlarged structures of the first gap G1 and the second gap G2. The structures, connection methods, and functional relationships of the main components of the relay proposed in the present disclosure will be described in detail below with reference to the above drawings.

[0063] As Figure 1 and Figure 2 shown, in an embodiment of the present disclosure, the relay proposed in the present disclosure includes a bobbin 100, an iron core assembly, and a magnetic conduction cylinder 300. Specifically, the bobbin 100 is provided with a through hole 101 penetrating along the first direction X, and the bobbin 100 is used for winding a coil. The iron core assembly is accommodated in the through hole 101 of the bobbin 100. The iron core assembly includes a stationary iron core 210 and a moving iron core 220 arranged along the first direction X. The area of the iron core assembly corresponding to the stationary iron core 210 is defined as the first area, and the area of the iron core assembly corresponding to the moving iron core 220 is defined as the second area. The magnetic conduction cylinder 300 is partially accommodated in the through hole 101, and the magnetic conduction cylinder 300 is disposed between the moving iron core 220 and the hole wall of the through hole 101. On this basis, there is a first gap G1 between the hole wall of the through hole 101 corresponding to the first area and the first area of the iron core assembly, and there is a second gap G2 between the magnetic conduction cylinder 300 and the second area of the iron core assembly. The first gap G1 is smaller than the second gap G2. Through the above design, since there is at least a partial area between the through hole 101 and the iron core assembly having a first gap G1 smaller than the second gap G2, when the magnetic conduction cylinder 300 is tilted, the bobbin 100 at the first gap G1 contacts the stationary iron core 210 first, thereby preventing the magnetic conduction cylinder 300 from contacting the second area of the iron core assembly and squeezing the moving iron core 220, and ensuring the stability of the relay.

[0064] It should be noted that on the basis of the design concept that the width W1 of the first gap G1 is smaller than the width W2 of the second gap G2, the first gap G1 can be 0 (as Figure 3 shown), or the first gap G1 can also be a specific gap structure, that is, the through hole 101 of the bobbin 100 and the first area of the iron core assembly can also adopt a contact fit, specifically, it can be an abutting fit, an interference fit, etc.

[0065] As Figure 2As shown, in an embodiment of the present disclosure, the aperture of the through hole 101 is equal at each location along the first direction X, that is, the through hole 101 has a channel structure with a uniform inner diameter. On this basis, the width of the static iron core 210 along the second direction Y can be greater than the width of the moving iron core 220 along the second direction Y, thereby implementing the design concept that the width W1 of the first gap G1 is less than the width W2 of the second gap G2. Among them, the second direction Y can be perpendicular to the first direction X. For example, it can be the radial direction of the through hole 101. Then, when the static iron core 210 and the moving iron core 220 are respectively in a cylindrical structure, the width of the static iron core 210 and the moving iron core 220 along the second direction Y can also be understood as their outer diameters. In some embodiments, in order to implement the design concept that the width W1 of the first gap G1 is less than the width W2 of the second gap G2, the coil bobbin 100 can also be changed. For example, the structure at different positions of its through hole 101, then the widths of the static iron core 210 and the moving iron core 220 along the second direction Y are not limited to the above design of this embodiment.

[0066] Refer to Figure 3 , Figure 3 FIG. shows a cross-sectional schematic diagram of the magnetic circuit part of a relay that can embody the principle of the present disclosure in another exemplary embodiment, and specifically magnifies two parts thereof to show the enlarged structures of the first gap G1 and the second gap G2.

[0067] As Figure 3 shown, in an embodiment of the present disclosure, the iron core assembly may further include a metal shell 230. The metal shell 230 is partially accommodated in the through hole 101. For example, one end of the metal shell 230 away from the magnetic conduction cylinder 300 is connected to the yoke iron plate 510, and the other end extends into the through hole 101 of the coil bobbin 100. The static iron core 210 and the moving iron core 220 are respectively accommodated in the metal shell 230. On this basis, the first region of the iron core assembly can be understood as the part of the metal shell 230 corresponding to the static iron core 210, and the second region of the iron core assembly can be understood as the part of the metal shell 230 corresponding to the moving iron core 220. Through the above design, the present disclosure can further ensure the sealing performance of the iron core assembly by using the metal shell 230.

[0068] As Figure 3As shown, in an embodiment of the present disclosure, a first protrusion 110 may be provided on a portion of the hole wall of the through hole 101 corresponding to the first region. Accordingly, the above-mentioned second gap G2 is the gap between one end of the first protrusion 110 facing away from the hole wall and the outer surface of the first region of the metal shell 230. Through the above design, the present disclosure does not need to change the structures of the static iron core 210 and the metal shell 230, nor does it need to change the overall hole shape of the through hole 101 of the bobbin 100. The design concept that the width W1 of the first gap G1 is less than the width W2 of the second gap G2 can be achieved by using the first protrusion 110. In some embodiments, the iron core assembly may not include the metal shell 230. On this basis, a first protrusion 110 may still be provided on a portion of the hole wall of the through hole 101 corresponding to the first region, and this is not limited to this embodiment. As Figure 3 As shown, based on the design of providing the first protrusion 110 on the through hole 101, in an embodiment of the present disclosure, the through hole 101 has a first hole opening away from the magnetic conduction cylinder 300 (i.e., close to the yoke iron plate 510), and the position of the static iron core 210 is arranged corresponding to the position of the first hole opening. On this basis, the first protrusion 110 may be provided at a position where the hole wall of the through hole 101 is adjacent to the first hole opening.

[0069] Based on the design of providing the first protrusion 110 on the through hole 101, in an embodiment of the present disclosure, the first protrusion 110 may be a ring structure, and the first protrusion 110 is arranged along the inner circumference of the through hole 101 for one week. Through the above design, by using the first protrusion 110 in a ring structure, the present disclosure is beneficial to achieving that the first gap G1 at each position in the circumferential direction of the iron core assembly is less than the second gap G2. Accordingly, when the magnetic conduction cylinder 300 tilts in any direction, the bobbin 100 at the first gap G1 can come into contact with the static iron core 210 first, further ensuring the stability of the relay.

[0070] As Figure 3As shown, based on the design that the through hole 101 is provided with the first protrusion 110 and the first protrusion 110 is an annular structure, in one embodiment of the present disclosure, along the second direction Y (e.g., the radial direction of the through hole 101), the width W3 of the annular structure corresponding to the first protrusion 110 may account for 0.1 to 0.5 of the radius of the through hole 101, such as 0.1, 0.2, 0.3, 0.4, 0.5, etc. Through the above design, the present disclosure can avoid the width W3 of the first protrusion 110 being too large and excessively occupying the channel of the through hole 101, and can also avoid the width W3 of the first protrusion 110 being too small and failing to ensure that the width W1 of the first gap G1 is smaller than the width W2 of the second gap G2. In some embodiments, the width W3 of the annular structure corresponding to the first protrusion 110 may account for a proportion of the radius of the through hole 101 that is less than 0.1, or may be greater than 0.5, such as 0.09, 0.51, etc., and the width W3 of the annular structure corresponding to the first protrusion 110 may be flexibly designed according to the gap between the metal shell 230 and the wall of the through hole 101, and is not limited to the present embodiment.

[0071] Different from Figure 3 In the illustrated embodiment, the first protrusion 110 is designed as an annular structure. In other embodiments of the present disclosure, the portion of the hole wall of the through hole 101 corresponding to the first area can be provided with at least two first protrusions 110, and the at least two first protrusions 110 are arranged at intervals along the inner circumference of the through hole 101.

[0072] like Figure 3 As shown, in one embodiment of the present disclosure, along the first direction X, the first protrusion 110 and the second area can be staggered, that is, the first protrusion 110 and the second area do not overlap. Through the above design, when the first protrusion 110 contacts the iron core assembly, the present disclosure can prevent the first protrusion 110 from contacting the second area of the iron core assembly, thereby preventing the first protrusion 110 from affecting the moving iron core 220 in the second area, preventing the moving iron core 220 from getting stuck, and ensuring the stability of the movement function of the iron core assembly.

[0073] like Figure 3As shown, based on the design in which the first protrusion 110 is provided on the through hole 101, in an embodiment of the present disclosure, a chamfer structure 111 may be provided at the edge of one end of the first protrusion 110 facing away from the hole wall of the through hole 101 (i.e., the end facing the iron core assembly). Through the above design, the present disclosure can enhance the structural strength of the first protrusion 110 by using the chamfer structure 111. At the same time, the present disclosure can utilize the above chamfer structure 111 to provide a guiding function during the assembly process of the iron core assembly (such as the metal shell 230) extending into the through hole 101 of the coil holder 100, improving the assembly efficiency and accuracy. At the same time, when the magnetic conduction cylinder 300 is tilted and the first protrusion 110 contacts the first area of the iron core assembly, the wear of the first protrusion 110 on the iron core assembly (such as the metal shell 230) can be reduced, preventing the problem of scraping chips. Further, the chamfer structure 111 of the first protrusion 110 may be, but is not limited to, an arc chamfer or an inclined surface chamfer.

[0074] It should be noted that based on the design in which the first protrusion 110 is provided on the through hole 101, when the first gap G1 is a specific void structure, or when the first gap G1 is 0 and the first protrusion 110 and the iron core assembly are only in contact fit (i.e., non-interference fit), on the basis of ensuring that the first protrusion 110 is arranged at the position of the hole wall of the through hole 101 corresponding to the first area, the arrangement area of the first protrusion 110 along the first direction X can extend to the mating portion of the actuating iron core 220 and the static iron core 210, and even further extend towards the moving iron core 220. Furthermore, when the first gap G1 is 0 and the first protrusion 110 and the iron core assembly are in interference fit, the interference fit portion of the first protrusion 110 and the iron core assembly can only be located in the first area, thereby avoiding interfering with the movement of the moving iron core 220.

[0075] Refer to Figure 4 , Figure 4 FIG. shows a cross-sectional view of the magnetic circuit part of a relay that can embody the principle of the present disclosure in another exemplary embodiment, and specifically magnifies two parts thereof to show the enlarged structures of the first gap G1 and the second gap G2.

[0076] As Figure 4 shown, still taking the design in which the iron core assembly includes the metal shell 230 as an example, in an embodiment of the present disclosure, along the above-mentioned second direction Y (such as the radial direction of the through hole 101), the width of the static iron core 210 may be greater than the width of the moving iron core 220 (for example, the outer diameter of the static iron core 210 is greater than the outer diameter of the moving iron core 220). On this basis, the periphery of the static iron core 210 extends beyond the periphery of the moving iron core 220.

[0077] As Figure 4As shown, when the iron core assembly includes the metal shell 230, since the part of the metal shell 230 corresponding to the first region matches the size of the static iron core 210, the width of the part of the metal shell 230 corresponding to the first region is greater than the width of the part of the metal shell 230 corresponding to the second region. Wherein, the through hole 101 can be a pore structure with uniform pore diameters at each position, and on this basis, the design concept that the width W1 of the first gap G1 is less than the width W2 of the second gap G2 can still be realized.

[0078] As Figure 1 shown, in an embodiment of the present disclosure, the relay proposed by the present disclosure further includes a yoke iron assembly, and the yoke iron assembly includes a U-shaped yoke iron 400 and a yoke iron plate 510. Specifically, the U-shaped yoke iron 400 includes two positioning contact parts 410 and a connecting part 420 connected between the two positioning contact parts 410, and both ends of the yoke iron plate 510 are respectively connected to one end of the two positioning contact parts 410 facing away from the connecting part 420.

[0079] In an embodiment of the present disclosure, the U-shaped yoke iron 400 and the yoke iron plate 510 jointly enclose an accommodation space. On this basis, the coil bobbin 100 can be arranged in the above accommodation space, and the magnetic conduction cylinder 300 can be connected to the connecting part 420.

[0080] In an embodiment of the present disclosure, the static iron core 210 and the yoke iron plate 510 can be relatively independent components, and the static iron core 210 is connected to the yoke iron plate 510. In some embodiments, the static iron core 210 and the yoke iron plate 510 can also adopt an integral structure. For example, the static iron core 210 can be formed by integral stamping of the yoke iron plate 510, and this embodiment is not limited thereto.

[0081] In an embodiment of the present disclosure, the magnetic conduction cylinder 300 and the U-shaped yoke iron 400 can be relatively independent components, and the magnetic conduction cylinder 300 is connected to the connecting part 420 of the U-shaped yoke iron 400. In some embodiments, the magnetic conduction cylinder 300 and the U-shaped yoke iron 400 can also adopt an integral structure. For example, the magnetic conduction cylinder 300 can be formed by integral stamping of the connecting part 420, and this embodiment is not limited thereto.

[0082] In an embodiment of the present disclosure, both ends of the yoke iron plate 510 and the two positioning contact parts 410 of the U-shaped yoke iron 400 can be respectively connected by riveting. Through the above design, since the riveting connection between the yoke iron plate 510 and the U-shaped yoke iron 400 causes the magnetic conduction cylinder 300 to exert extrusion on the moving iron core 220, the present disclosure can be suitable for the application in the above embodiment, further avoiding the magnetic conduction cylinder 300 from contacting the second region and extruding the moving iron core 220, and ensuring the stability of the relay.

[0083] As Figures 2 to 4As shown, in some embodiments of the present disclosure, a second protrusion 120 may be provided on the inner wall of the through hole 101. The second protrusion 120 abuts against the magnetic conductive cylinder 300, and the second protrusion 120 can limit the movement of the magnetic conductive cylinder 300 along the first direction X, further improving the assembly and positioning effect of the magnetic conductive cylinder 300 in the through hole 101 of the bobbin 100.

[0084] Refer to Figure 5 and Figure 6 , Figure 5 FIG. shows a cross-sectional schematic view of a relay embodying the principles of the present disclosure in yet another exemplary embodiment; Figure 6 FIG. representatively shows Figure 5 a three-dimensional exploded schematic view of a partial structure shown in FIG., specifically showing the three-dimensional exploded structure of the U-shaped yoke 400 and the yoke plate 510.

[0085] As Figure 5 and Figure 6 shown, in an embodiment of the present disclosure, the positioning contact portion 410 of the U-shaped yoke 400 has a first connection end facing away from the connection portion 420. Both ends of the yoke plate 510 are respectively connected to the two first connection ends, and the yoke plate 510 has a first surface facing the U-shaped yoke 400. On this basis, a positioning protrusion 411 protrudes from the end surface of the first connection end, and a positioning groove 511 is provided at a position corresponding to the positioning protrusion 411 on the first surface. The positioning groove 511 is a counterbore, that is, each side of the positioning groove 511 has a groove wall. Accordingly, the positioning protrusion 411 and the positioning groove 511 are in positioning cooperation. For example, the positioning protrusion 411 is received in the positioning groove 511. Through the above design, the present disclosure can utilize the positioning protrusion 411 and the positioning groove 511 to achieve the assembly and positioning of the U-shaped yoke 400 and the yoke plate 510 in the direction parallel to the first surface, ensuring that the magnetic conductive cylinder 300 and the moving iron core 220 are on the same axis after assembly. At the same time, since the positioning groove 511 adopts a counterbore structure, a guiding function can be realized during the assembly process of the U-shaped yoke 400 and the yoke plate 510, reducing the assembly difficulty, ensuring the assembly of the U-shaped yoke 400 and the yoke plate 510 in place, and further ensuring the balance of the riveting force at both ends of the U-shaped yoke 400, avoiding tilting and driving the magnetic conductive cylinder 300 to squeeze the moving iron core 220.

[0086] As Figure 1 shown, in an embodiment of the present disclosure, the relay proposed by the present disclosure may further include a housing, a base, an insulating cover 800, a pair of static contacts 620, an arc extinguishing portion, a moving assembly, and a magnetic circuit portion. Among them, the housing and the base are connected and form a chamber for accommodating the insulating cover 800, at least part of the static contacts 620, the arc extinguishing portion, the moving assembly, and the magnetic circuit portion.

[0087] As Figure 1As shown, in an embodiment of the present disclosure, a pair of static contacts 620 are installed on the top of the insulating cover 800. At least part of each static contact 620 is located inside the insulating cover 800, and a static contact point is further provided at the bottom of each static contact 620. Two openings are provided at the position corresponding to the top of the housing and the insulating cover 800, and a pair of static contacts 620 extend out of the outer surface of the housing through the two openings. One static contact 620 serves as the terminal for current inflow, and the other static contact 620 serves as the terminal for current outflow.

[0088] As Figure 1 shown, in an embodiment of the present disclosure, the insulating cover 800 can be made of ceramic material, that is, the insulating cover 800 can be a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 800 can also be made of plastic material.

[0089] As Figure 1 shown, in an embodiment of the present disclosure, the insulating cover 800 is connected to the yoke iron plate 510 through the frame piece 520. The frame piece 520 can be a metal piece with a ring structure, such as iron-nickel alloy. One end of the frame piece 520 is connected to the opening edge of the insulating cover 800, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 520 is connected to the yoke iron plate 510, and can also be connected by laser welding, brazing, resistance welding, gluing, etc. A frame piece 520 is arranged between the insulating cover 800 and the yoke iron plate 510, which facilitates the connection between the insulating cover 800 and the yoke iron plate 510.

[0090] As Figure 1 shown, in an embodiment of the present disclosure, the moving component is movably arranged in the chamber formed by the housing and the base. The moving component includes a moving contact 610, a first elastic member 710, and a push rod member 720. Among them, the moving contact 610 is arranged inside the insulating cover 800, and both ends of the moving contact 610 are respectively used to contact or separate from the bottom of a pair of static contacts 620.

[0091] In an embodiment of the present disclosure, the moving contact 610 can include a contact body and two moving contact points. The moving contact points can be separate parts, and the two moving contact points are connected to both ends of the contact body. Of course, in other embodiments, the two moving contact points can also be integrally formed at both ends of the contact body. In addition, the moving contact points can protrude from the side surface of the contact body facing the static contact 620, or can be flush with the side surface of the contact body facing the static contact 620.

[0092] In an embodiment of the present disclosure, the push rod member 720 movably passes through the first through hole of the yoke iron plate 510, and part of the push rod member 720 extends out of the side surface of the yoke iron plate 510 facing the static contact 620, and part of the push rod member 720 extends out of the side surface of the yoke iron plate 510 facing away from the static contact 620.

[0093] The moving contact 610 is movably mounted on a portion of the push rod member 720 that extends out of the yoke iron plate 510 toward the static contact 620 on one side surface. The first elastic member 710 is connected to the push rod member 720 and the moving contact 610, and is used to apply an elastic force to the moving contact 610 in the direction toward the static contact 620 to provide contact pressure.

[0094] As Figure 1 shown, in an embodiment of the present disclosure, a metal shell 230 is further covered on a side surface of the yoke iron plate 510 facing away from the static contact 620, and the metal shell 230 covers the first through hole of the yoke iron plate 510. Among them, a portion of the push rod member 720 that extends out of the yoke iron plate 510 on the side surface facing away from the static contact 620 is inserted into the metal shell 230.

[0095] As Figure 1 shown, in an embodiment of the present disclosure, the magnetic circuit portion includes a moving iron core 220, a static iron core 210, a bobbin 100, and a coil. The bobbin 100 is in a hollow cylindrical shape and is made of an insulating material. The bobbin 100 is located on a side of the yoke iron plate 510 facing away from the static contact 620 and surrounds the outer periphery of the metal shell 230. The coil is wound around the outer periphery of the bobbin 100.

[0096] As Figure 1 shown, in an embodiment of the present disclosure, the static iron core 210 is fixedly arranged in the metal shell 230, and a part of the static iron core 210 is inserted into the first through hole. The static iron core 210 has a second through hole, and the position of the second through hole corresponds to that of the first through hole, so that the push rod member 720 can movably pass through the first through hole and the second through hole. The moving iron core 220 is movably arranged in the metal shell 230 and is disposed opposite to the static iron core 210. The moving iron core 220 is connected to the push rod member 720 and is used to be attracted by the static iron core 210 when the coil is energized. The moving iron core 220 and the push rod member 720 can be connected by screwing, riveting, welding or other means.

[0097] As Figure 1 shown, in an embodiment of the present disclosure, the magnetic circuit portion further includes a second elastic member 730. The second elastic member 730 is located in the metal shell 230 and is disposed between the static iron core 210 and the moving iron core 220, and is used to reset the moving iron core 220 when the coil is de-energized.

[0098] It should be noted that when the coil is energized, the static iron core 210 attracts the moving iron core 220 to move upward, and the moving iron core 220 can drive the push rod member 720 to move upward. When the moving contact 610 contacts the static contact 620, the moving contact 610 is blocked by the static contact 620, while the push rod member 720 will still continue to move upward until the over-travel is completed.

[0099] During the over-travel process, after being pressed by the push rod member 720, the first elastic member 710 can provide an elastic force to the moving contact 610 to provide contact pressure.

[0100] It should be noted here that the relays shown in the drawings and described in this specification are only a few examples of the many relays that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details of the relays shown in the drawings or described in this specification or to any components of the relays.

[0101] In summary, the relay proposed by the present disclosure includes a bobbin 100, an iron core assembly, and a magnetic conducting cylinder 300. The iron core assembly is accommodated in the through hole 101 of the bobbin 100. The area of the iron core assembly corresponding to the static iron core 210 is defined as the first area, and the area of the iron core assembly corresponding to the moving iron core 220 is defined as the second area. The magnetic conducting cylinder 300 is disposed between the moving iron core 220 and the hole wall of the through hole 101. There is a first gap G1 between the hole wall of the through hole 101 corresponding to the first area and the first area, and there is a second gap G2 between the magnetic conducting cylinder 300 and the second area. The first gap G1 is smaller than the first gap G1. Through the above design, since there is at least a partial area between the through hole 101 and the iron core assembly having a first gap G1 smaller than the second gap G2, when the magnetic conducting cylinder 300 is tilted, the bobbin 100 at the first gap G1 contacts the static iron core 210 first, thereby avoiding the magnetic conducting cylinder 300 contacting the second area of the iron core assembly and squeezing the moving iron core 220, and ensuring the stability of the relay.

[0102] The exemplary embodiments of the relay proposed by the present disclosure have been described in detail above and / or illustrated. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein. On the contrary, each component and / or step of each embodiment can be used independently and separately from the other components and / or steps described herein. Each component and / or each step of one embodiment can also be combined with the other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "a", "an", and "the above" etc. are used to indicate the existence of one or more elements / components / etc. The terms "comprising", "including", and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. In addition, the terms "first" and "second" etc. in the claims and the specification are only used as labels and are not numerical limitations on their objects.

[0103] Although the relay proposed by the present disclosure has been described according to different specific embodiments, those skilled in the art will recognize that modifications can be made to the embodiments of the present disclosure within the spirit and scope of the claims.

Claims

1. A relay, characterized in that, include: The coil frame is provided with a through hole penetrating along a first direction; An iron core assembly, contained in the through hole and comprising a static iron core and a moving iron core arranged along the first direction, defining an area of the iron core assembly corresponding to the static iron core as a first area, and defining an area of the iron core assembly corresponding to the moving iron core as a second area; as well as A magnetic conductive cylinder, partially contained in the through hole and disposed between the moving iron core and the hole wall of the through hole; There is a first gap between the hole wall of the through hole corresponding to the first area and the first area, there is a second gap between the magnetic conductive cylinder and the second area, and the first gap is smaller than the first gap.

2. The relay according to claim 1, characterized in that, The core assembly also includes a metal shell, which is partially accommodated in the through hole, and the static iron core and the moving iron core are respectively accommodated in the metal shell; wherein the first area is the part of the metal shell corresponding to the static iron core, and the second area is the part of the metal shell corresponding to the moving iron core.

3. The relay according to claim 2, wherein A first protrusion is provided on a portion of the hole wall of the through hole corresponding to the first region, and the first gap is a gap between an end of the first protrusion facing away from the hole wall and an outer surface of the first region of the metal shell.

4. The relay according to claim 3, wherein The through hole has a first opening away from the magnetic conductive cylinder, the position of the static iron core is arranged corresponding to the position of the first opening, and the first protrusion is arranged at a position where the hole wall of the through hole is adjacent to the first opening.

5. The relay according to claim 3, characterized in that, The first protrusion is an annular structure, and the first protrusion is arranged along the inner circumference of the through hole.

6. The relay according to claim 3, characterized in that, A portion of the hole wall of the through hole corresponding to the first region is provided with at least two first protrusions, and the at least two first protrusions are arranged at intervals along the inner circumference of the through hole.

7. The relay according to claim 3, characterized in that, Along the first direction, the first protrusion and the second area are staggered.

8. The relay according to claim 3, characterized in that, An edge of one end of the first protrusion facing away from the hole wall of the through hole is provided with a chamfer structure.

9. The relay according to claim 1, wherein Along the radial direction of the through hole, the width of the static iron core is greater than the width of the moving iron core, and the periphery of the static iron core exceeds the periphery of the moving iron core.

10. The relay according to claim 9, characterized in that, The core assembly also includes a metal shell, which is partially accommodated in the through hole, and the static iron core and the moving iron core are respectively accommodated in the metal shell; wherein the first area is the part of the metal shell corresponding to the static iron core, and the second area is the part of the metal shell corresponding to the moving iron core, and the width of the part of the metal shell corresponding to the first area is greater than the width of the part of the metal shell corresponding to the second area.

11. The relay according to claim 1, characterized in that, The relay includes a yoke assembly, which includes a U-shaped yoke and a yoke plate. The U-shaped yoke includes two positioning contact parts arranged at intervals and a connecting part connected between the two positioning contact parts. The two ends of the yoke plate are respectively connected to one end of the two positioning contact parts facing away from the connecting part.

12. The relay according to claim 11, wherein The U-shaped yoke and the yoke plate together enclose a containing space; wherein the coil frame is arranged in the containing space, and the magnetic conductive cylinder is connected to the connecting portion.

13. The relay according to claim 11, characterized in that: The static iron core and the yoke iron plate are relatively independent components, and the static iron core is connected to the yoke iron plate; or The static iron core and the yoke iron plate are of an integral structure.

14. The relay according to claim 11, wherein: The magnetic conduction cylinder and the U-shaped yoke iron are relatively independent components, and the magnetic conduction cylinder is connected to the connecting portion; or The magnetic conduction cylinder and the U-shaped yoke iron are of an integral structure.

15. The relay according to claim 11, wherein, Both ends of the yoke iron plate are respectively riveted and connected to the two positioning contact parts.

16. The relay according to any one of claims 1 to 15, characterized in that, The first gap is greater than or equal to 0.

17. The relay according to any one of claims 1 to 15, characterized in that, The hole wall of the through hole is provided with a second protrusion, and the second protrusion abuts against the magnetic conduction cylinder to limit the movement of the magnetic conduction cylinder along the first direction.

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