Electromagnetic system and contactor

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an electromagnetic system and a contactor, the electromagnetic system comprises an iron core assembly, a fixing assembly and a supporting shaft sleeve, and the iron core assembly comprises an iron core main body and a mounting shaft connected to the iron core main body; the fixing assembly is provided with a limiting through hole and a supporting piece, and the supporting piece is inserted into the limiting through hole in the axial direction of the mounting shaft and provided with a fixing hole. The supporting shaft sleeve penetrates through the fixing hole and is limited in the fixing hole and sleeves the mounting shaft. During assembly, the mounting shaft extends into the limiting through hole, and the supporting piece embedded with the supporting shaft sleeve is inserted into the limiting through hole in the axial direction of the mounting shaft, so that the supporting shaft sleeve is arranged on the mounting shaft of the iron core assembly in a sleeving manner, the assembly efficiency is high, and the iron core assembly can be independently disassembled. Meanwhile, the iron core assembly is fixed through the supporting piece and the supporting shaft sleeve, so that the iron core assembly can be integrally hung on the fixing assembly, the iron core assembly can adaptively move slightly when generating magnetic attraction force load in the contactor, and connection damage between the iron core assembly and the fixing assembly is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electric appliance technical field especially relates to a electromagnetic system and contactor. BACKGROUND

[0002] The contactor comprises a contactor shell and an electromagnetic system arranged in the contactor shell, and the electromagnetic system comprises a coil and a core. In order to facilitate the installation of the coil and the core in the contactor and improve the convenience of disassembling the coil and the core, the electromagnetic system of some contactors comprises a bottom support, the coil and the core are installed on the bottom support in a detachable connection mode such as buckle connection to form an integral structure, and then the integral structure is installed in the contactor.

[0003] However, in the electromagnetic system of the existing contactor, only the core is connected with the coil, so that the installation stability of the core is not high, or the core is connected with the bottom support by means of a fixing member, but the operation is inconvenient during assembly, and the assembly efficiency is low.

[0004] Therefore, there is an urgent need for an electromagnetic system and a contactor to solve the above problems in the prior art. SUMMARY

[0005] The utility model aims at providing an electromagnetic system and a contactor, which can improve the installation stability of the core of the electromagnetic system and improve the convenience during assembly.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] On the one hand, an electromagnetic system is provided, which comprises:

[0008] A core assembly comprises a core main body and a mounting shaft connected to the core main body;

[0009] A fixing assembly is provided with a limiting hole and a supporting member, the supporting member is inserted into the limiting hole along the axial direction of the mounting shaft, and the supporting member is provided with a fixing hole;

[0010] A supporting shaft sleeve is inserted into the fixing hole and is sleeved on the mounting shaft.

[0011] As an optional scheme of the electromagnetic system provided by the utility model, the fixing assembly is provided with a through hole communicating with the limiting hole, and the mounting shaft enters the limiting hole through the through hole along the radial direction of the mounting shaft.

[0012] As an optional scheme of the electromagnetic system provided by the utility model, one end of the supporting member is provided with a clamping flange, the clamping flange is arranged along the outer periphery of the supporting member, and a clamping groove is formed between the clamping flange and the outer peripheral wall of the supporting member;

[0013] The fixing assembly comprises a fixing frame surrounding the limiting through hole, the through hole penetrating the side wall of the fixing frame, and the clamping flange sleeve is arranged outside the fixing frame and is clamped with the fixing frame through the clamping groove.

[0014] As an optional scheme of the electromagnetic system provided by the utility model, the outer wall of the support member is provided with a limiting protrusion, the limiting protrusion can be clamped into the through hole, and the limiting protrusion cooperates with the inner wall of the through hole to limit the support member from coming out of the limiting through hole.

[0015] As an optional scheme of the electromagnetic system provided by the utility model, one of the outer wall of the support member and the inner wall of the limiting through hole is provided with a guide protrusion, and the other of the outer wall of the support member and the inner wall of the limiting through hole is provided with a guide groove, and the guide protrusion and the guide groove are slidably matched;

[0016] And / or, the outer wall of the support member is provided with at least one abutting rib, the abutting rib extends along the axial direction of the mounting shaft, and the abutting rib abuts against the inner wall of the limiting through hole.

[0017] And / or, the side of the support member away from the limiting through hole is provided with a taking and placing part, and the support member is provided with a taking and placing groove on the opposite sides of the taking and placing part.

[0018] As an optional scheme of the electromagnetic system provided by the utility model, the fixing assembly comprises a bottom plate and a plurality of first mounting parts arranged on the bottom plate, at least two first mounting parts are arranged on the opposite sides of the iron core main body, the first mounting part is provided with the limiting through hole, and a gap exists between the iron core main body and the bottom plate.

[0019] As an optional scheme of the electromagnetic system provided by the utility model, the electromagnetic system further comprises a base, the base is provided with a plug-in space for plugging the fixing assembly and the iron core assembly; one of the fixing assembly and the base is provided with a first buckle, the other of the fixing assembly and the base is provided with a first clamping hole, and the first buckle is clamped in the first clamping hole.

[0020] And / or, the electromagnetic system further comprises a coil assembly, the coil assembly is sleeved on the iron core assembly, one of the fixing assembly and the coil assembly is provided with a positioning column, the other of the fixing assembly and the coil assembly is provided with a positioning hole, and the positioning column is inserted into the positioning hole.

[0021] As an optional scheme of the electromagnetic system provided by the utility model, the inner wall of the plug-in space is provided with sliding rails, the sliding rails extend along the direction in which the fixing assembly is inserted into the plug-in space, sliding grooves are arranged on the fixing assembly and the coil assembly, and the sliding grooves and the sliding rails are slidably matched;

[0022] The inner wall of the sliding groove is provided with a curved structure, and the curved structure is in frictional contact with the surface of the sliding rail.

[0023] As an optional scheme of the electromagnetic system provided by the utility model, the electromagnetic system further comprises a coil assembly, the coil assembly comprises a coil, a circuit board, a wire box and a wiring board.

[0024] The coil is sleeved on the iron core assembly and located outside the wire box, the circuit board is arranged in the wire box, the first end of the wiring board is connected with the coil, the second end of the wiring board is plug-in assembled in the wire box and provided with a wiring terminal, the wiring terminal is electrically connected with the coil and the circuit board.

[0025] As an optional scheme of the electromagnetic system provided by the utility model, the second end of the wiring board is provided with a first limiting rib, the wire box is provided with a first limiting groove, and the first limiting rib is inserted into the first limiting groove along the plug-in direction.

[0026] And / or, the second end of the wiring board is provided with a second limiting groove, the wire box is provided with a second limiting rib, and the second limiting rib is inserted into the second limiting groove along the plug-in direction.

[0027] And / or, the coil assembly further comprises a cover body buckled on the wire box, the wire box is provided with a wiring screw, the cover body is provided with an operation hole, and the operation hole is configured to extend into a tool for screwing the wiring screw; the cover body is snap-connected with the wire box.

[0028] The plug-in direction is the direction in which the wiring board is inserted into the wire box.

[0029] On the other hand, a contactor is provided, comprising a contactor shell and an electromagnetic system as described above, and the electromagnetic system is mounted on the contactor shell.

[0030] The utility model has the advantages of:

[0031] The utility model provides a kind of electromagnetic system and contactor comprising the electromagnetic system, by support piece can be fixed on fixed assembly with core assembly, when assembling, the fixed hole in support piece is located in by supporting shaft sleeve, make both assembly into a whole;The mounting shaft of core assembly is inserted into the limiting hole of fixed assembly, and the support piece embedded with supporting shaft sleeve is inserted into limiting hole along the axial direction of mounting shaft, make supporting shaft sleeve be equipped on the mounting shaft of core assembly, while improving the fixed stability of core assembly, can improve the operation convenience of when assembling, assembly efficiency is high, and core assembly can be separately disassembled.Meanwhile, by supporting piece and supporting shaft sleeve fixed core assembly, can make core assembly whole hang on fixed assembly, so that core assembly can adaptively micro-activity when producing magnetic attraction force in contactor, avoid the connection between core assembly and fixed assembly damage. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in the utility model embodiment, obviously, the following described drawings are only some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to the drawings.

[0033] Figure 1 It is the axial drawing of the electromagnetic system provided by the utility model embodiment one;

[0034] Figure 2 It is the structure schematic view of the base of the electromagnetic system provided by the utility model embodiment one;

[0035] Figure 3 It is the first view of the electromagnetic unit of the electromagnetic system provided by the utility model embodiment one;

[0036] Figure 4 It is the exploded schematic view of core assembly and fixed assembly provided by the utility model embodiment one;

[0037] Figure 5 It is the exploded schematic view of another scheme of fixed assembly provided by the utility model embodiment one;

[0038] Figure 6 It is the second view of the electromagnetic unit of the electromagnetic system provided by the utility model embodiment one;

[0039] Figure 7 It is the exploded schematic view of the coil assembly of electromagnetic unit provided by the utility model embodiment one;

[0040] Figure 8 It is the connection schematic view of the wire box and cover of coil assembly provided by the utility model embodiment one;

[0041] Figure 9 is the exploded schematic view of the wire box and the cover body of the coil assembly provided by the embodiment one of the utility model;

[0042] Figure 10 is the cross section schematic view of the electromagnetic system provided by the embodiment one of the utility model;

[0043] Figure 11 is the isometric view of the electromagnetic system provided by the embodiment two of the utility model;

[0044] Figure 12 is the exploded schematic view of the electromagnetic system provided by the embodiment two of the utility model.

[0045] In the figure:

[0046] 1, base; 2, core assembly; 3, coil assembly; 4, fixed assembly; 5, support shaft sleeve; 6, sliding groove; 20, electromagnetic unit;

[0047] 10, plug-in space; 11, limiting side plate; 12, bottom supporting plate; 13, sliding rail; 14, first stop block; 15, second stop block;

[0048] 121, first clamping hole;

[0049] 21, core main body; 22, mounting shaft;

[0050] 31, coil; 32, circuit board; 33, wire box; 34, cover body; 35, wiring screw; 36, wiring board;

[0051] 331, positioning column; 332, first limiting groove; 333, second limiting rib; 334, box body; 335, second wiring part;

[0052] 3341, seventh clamping buckle; 3342, insertion slot;

[0053] 3351, wiring slot; 3352, connecting plate;

[0054] 33521, fourth clamping hole;

[0055] 341, first cover plate; 342, second cover plate; 343, first wiring part;

[0056] 3411, fifth clamping buckle; 3421, sixth clamping buckle;

[0057] 3431, threading hole; 3432, operation hole;

[0058] 361, wiring terminal; 362, first limiting rib; 363, second limiting groove;

[0059] 40, fixing hole; 41, bottom plate; 42, first mounting portion; 43, support member;

[0060] 411, positioning hole; 412, first buckle; 413, dismounting plate;

[0061] 421, fixing frame; 422, support portion;

[0062] 4211, limiting perforation; 4212, through hole; 4213, guide groove;

[0063] 431, clamping flange; 432, clamping groove; 433, guide convex rib; 434, abutting rib; 435, limiting convex portion; 436, taking and placing portion; 437, taking and placing groove;

[0064] 61, curved structure. DETAILED DESCRIPTION

[0065] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0066] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0067] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0068] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0069] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0070] In the embodiments of this utility model, the same reference numerals denote the same parts, and for the sake of brevity, detailed descriptions of the same parts are omitted in different embodiments.

[0071] Example 1

[0072] like Figure 1 As shown, this embodiment provides an electromagnetic system that improves the ease of assembly and disassembly of the electromagnetic system, enhances the overall appearance quality of the electromagnetic system, and provides high overall stability.

[0073] like Figure 1 , Figure 2 as well as Figure 3 As shown, the electromagnetic system provided in this application embodiment includes a base 1 and an electromagnetic unit 20. The base 1 is provided with an insertion space 10 for inserting the electromagnetic unit 20; the electromagnetic unit 20 includes an iron core assembly 2, a coil assembly 3, and a fixing assembly 4; the iron core assembly 2 and the fixing assembly 4 are detachably connected; the coil assembly 3 includes a coil 31, a circuit board 32, and a junction box 33, the coil 31 is sleeved on the iron core assembly 2 and is detachably connected to the junction box 33, the circuit board 32 is disposed in the junction box 33 and is electrically connected to the coil 31; the junction box 33 is detachably connected to the fixing assembly 4; the fixing assembly 4 is detachably connected to the base 1.

[0074] The electromagnetic system provided by the embodiment of the application can improve the connection stability between the coil assembly 3 and the core assembly 2 by arranging the fixing assembly 4 in the electromagnetic unit 20 and connecting the fixing assembly 4 with the coil box 33 of the core assembly 2 and the coil assembly 3, and after the electromagnetic unit 20 is assembled, the electromagnetic unit 20 is integrally inserted into the insertion space 10 of the base 1 and is detachably connected with the base 1 through the fixing assembly 4, so that the electromagnetic unit 20 is stably installed in the base 1 and can be installed in the contactor by means of the base 1, and compared with the prior art in which the coil 31 is fixed in the packaging shell made of thermosetting plastic material, the assembly process of the coil 31 can be simplified. Since the base 1 with the insertion space 10 can accommodate the electromagnetic unit 20 and the circuit board 32 is accommodated in the coil box 33, the appearance quality of the entire electromagnetic system can be improved, and the internal components can be prevented from being damaged.

[0075] Since the core assembly 2 and the fixing assembly 4 are detachably connected, the coil box 33 of the coil assembly 3 and the fixing assembly 4 are detachably connected, and the fixing assembly 4 and the base 1 are detachably connected, when the electromagnetic system is disassembled, the connection between the fixing assembly 4 and the base 1 is first released, the electromagnetic unit 20 is pulled out of the base 1, and then the connection between the fixing assembly 4 and the coil box 33, the connection between the fixing assembly 4 and the core assembly 2, and the connection between the coil 31 and the coil box 33 are disassembled, so that the coil 31 and the core assembly 2 can be separated, the coil 31 can be replaced or analyzed, the coil box 33 and the fixing assembly 4 can be separated, the coil box 33 can be replaced, the production efficiency can be improved, the electromagnetic system can be disassembled conveniently and quickly, the components are not damaged during disassembly, and the scrap rate is reduced.

[0076] For the convenience of description, the first direction, the second direction and the third direction are introduced in the embodiment for description, wherein the first direction is the direction in which the electromagnetic unit 20 is inserted into the insertion space 10, that is, the electromagnetic unit 20 is inserted into the insertion space 10 along the first direction, the second direction is the width direction of the electromagnetic system, and the third direction is the height direction of the electromagnetic system. The first direction, the second direction and the third direction are perpendicular to each other. Corresponding to the drawings, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction.

[0077] Referring to Figure 2 The base 1 includes a bottom supporting plate 12 in a U-shaped structure and two limiting side plates 11, the two limiting side plates 11 are arranged in the second direction and are spaced apart from each other, and the two limiting side plates 11 and the middle bottom supporting plate 12 surround the U-shaped slot-shaped insertion space 10, so that the electromagnetic unit 20 can be inserted, and the opposite two inner walls of the insertion space 10 limit the electromagnetic unit 20 in the second direction.

[0078] As Figure 4As shown, the iron core assembly 2 comprises an iron core body 21 and a mounting shaft 22 connected to the iron core body 21. The electromagnetic unit 20 further comprises a support sleeve 5 sleeved on the mounting shaft 22. The fixing assembly 4 is provided with a limiting hole 4211 and a support 43. The support 43 is inserted into the limiting hole 4211 along the axial direction of the mounting shaft 22, and the support 43 is provided with a fixing hole 40. The support sleeve 5 is inserted into the fixing hole 40.

[0079] In the electromagnetic system provided by the embodiment, the support 43 can be used to fix the iron core assembly 2 on the fixing assembly 4. During assembly, the support sleeve 5 is inserted into the fixing hole 40 of the support 43, so that the two are assembled into a whole. The mounting shaft 22 of the iron core assembly 2 is inserted into the limiting hole 4211 of the fixing assembly 4, and the support 43 with the support sleeve 5 embedded therein is inserted into the limiting hole 4211 along the axial direction of the mounting shaft 22, so that the support sleeve 5 is sleeved on the mounting shaft 22 of the iron core assembly 2. In this way, the stability of the fixing of the iron core assembly 2 is improved, and the operation convenience during assembly is improved, the assembly efficiency is high, and the iron core assembly 2 can be separately disassembled. At the same time, the iron core assembly 2 is fixed by the support 43 and the support sleeve 5, so that the iron core assembly 2 is hung on the fixing assembly 4 as a whole, and the iron core assembly 2 can adaptively move slightly when the magnetic attraction force of the contactor is loaded, so as to avoid damage to the connection between the iron core assembly 2 and the fixing assembly 4.

[0080] Further, the fixing assembly 4 is provided with at least one limiting hole 4211 on both sides along the second direction. The mounting shaft 22 is inserted into the iron core body 21, and both ends thereof protrude relative to the iron core body 21. One support sleeve 5 is sleeved on each end of the mounting shaft 22. The support sleeve 5 is inserted into the corresponding limiting hole 4211, and the corresponding support 43 is inserted into the limiting hole 4211 to support and fix the support sleeve 5, so that the iron core assembly 2 is hung on the fixing assembly 4 as a whole.

[0081] Exemplarily, the cross-sectional area of the support sleeve 5 and the cross-sectional area of the fixing hole 40 are both non-circular, so as to avoid rotation of the support sleeve 5 in the fixing hole 40, and to better limit the support sleeve 5.

[0082] As shown in the figures, Figure 4 The fixing assembly 4 comprises a bottom plate 41 and a plurality of first mounting portions 42 provided on the bottom plate 41. At least two first mounting portions 42 are separately provided on opposite sides of the iron core body 21, and the first mounting portion 42 is provided with a limiting hole 4211. Exemplarily, four first mounting portions 42 are provided, and two first mounting portions 42 are provided on both sides of the electromagnetic unit 20 along the second direction, which are used to correspondingly mount the two mounting shafts 22 inserted into the iron core body 21.

[0083] Further, when the iron core assembly 2 and the fixing assembly 4 are installed, a gap exists between the iron core body 21 and the bottom plate 41 to accommodate the movement of the iron core assembly 2 caused by the deformation of the support sleeve 5.

[0084] As shown in Figure 4 , the first installation portion 42 of the fixing assembly 4 is provided with a through hole 4212 communicating with a limiting hole 4211, the limiting hole 4211 penetrates the first installation portion 42 along the axial direction of the installation shaft 22, and the installation shaft 22 penetrates the through hole 4212 and enters the limiting hole 4211 along the radial direction of the installation shaft 22. When installing the iron core assembly 2 and the fixing assembly 4, the iron core assembly 2 is placed on the fixing assembly 4 along the third direction, and the two ends of the installation shaft 22 extending out of the iron core body 21 are inserted into the limiting hole 4211 through the through hole 4212 along the third direction. After the support sleeve 5 is inserted into the fixing hole 40 on the support 43, the support 43 is inserted into the limiting hole 4211 along the second direction, and the support sleeve 5 is sleeved with the installation shaft 22 inside the limiting hole 4211, thereby completing the detachable connection between the iron core assembly 2 and the fixing assembly 4. After installation, a gap is left between the iron core assembly 2 and the bottom plate 41.

[0085] More specifically, as shown in Figure 5 , one end of the support 43 is provided with a clamping flange 431, the clamping flange 431 is arranged along the outer periphery of the support 43, and a clamping groove 432 is formed between the clamping flange 431 and the outer peripheral wall of the support 43. The first installation portion 42 includes a fixed frame 421 and a support portion 422, the fixed frame 421 surrounds the limiting hole 4211, and the support portion 422 is protruded from the outer wall of the bottom end of the fixed frame 421, and the fixed frame 421 is connected with the bottom plate 41 through the support portion 422. The through hole 4212 penetrates the side wall of the fixed frame 421, the clamping flange 431 is sleeved outside the fixed frame 421, and the clamping flange 431 is clamped with the fixed frame 421 through the clamping groove 432. By arranging the clamping flange 431, when the support 43 is inserted into the limiting hole 4211 of the fixed frame 421, the clamping flange 431 is clamped on the outer edge of the fixed frame 421, which not only increases the stability of the connection between the support 43 and the fixed frame 421, effectively prevents the loosening of the support 43, but also supports the fixed frame 421 to prevent the deformation of the fixed frame 421.

[0086] As shown in Figure 4As shown, one of the outer wall of the support 43 and the inner wall of the limiting hole 4211 is provided with a guide protrusion 433, and the other of the outer wall of the support 43 and the inner wall of the limiting hole 4211 is provided with a guide groove 4213, the guide protrusion 433 and the guide groove 4213 are slidably matched, for guiding and positioning the insertion of the support 43 into the limiting hole 4211, further improving the installation stability of the support 43 in the fixed frame 421. Specifically, the guide protrusion 433 can be provided on the support 43, and the guide groove 4213 can be recessed on the inner wall of the limiting hole 4211. The guide protrusion 433 and the guide groove 4213 can be provided one by one.

[0087] As shown in Figure 4 , Figure 6 and Figure 8 , one of the bottom plate 41 and the wire box 33 is provided with a positioning column 331, and the other of the bottom plate 41 and the wire box 33 is provided with a positioning hole 411, the positioning column 331 is inserted into the positioning hole 411, realizing the positioning and detachable connection between the wire box 33 and the bottom plate 41, which helps to ensure the accurate installation position of the electromagnetic unit 20. Exemplarily, two positioning columns 331 are provided on the bottom of the wire box 33, and two positioning holes 411 are provided on the bottom plate 41, the two positioning columns 331 and the two positioning holes 411 are one-to-one correspondingly inserted.

[0088] As shown in Figure 2 and Figure 6 , one of the bottom plate 41 and the base 1 is provided with a first buckle 412, and the other of the bottom plate 41 and the base 1 is provided with a first clamping hole 121, the first buckle 412 is clamped in the first clamping hole 121, realizing the detachable connection between the fixed assembly 4 and the base 1, which is more convenient to disassemble. Further, a notch groove is provided on the bottom plate 41, and a dismounting plate 413 extends from the bottom wall of the notch groove, which can be elastically deformed when pressed, and the bottom of the dismounting plate 413 is provided with the first buckle 412 described above, which can be clamped with the first clamping hole 121 on the base 1, and by driving the dismounting plate 413 to elastically deform, the first buckle 412 can be separated from the first clamping hole 121.

[0089] As shown in Figure 7 , in this embodiment, the coil 31 is located outside the wire box 33, and the opening of the wire box 33 faces the coil 31. The coil assembly 3 further comprises a wiring board 36, the first end of the wiring board 36 is connected with the coil 31, the second end of the wiring board 36 is inserted into the wire box 33 and provided with a wiring terminal 361, the wiring terminal 361 is electrically connected with the coil 31 and the circuit board 32. The wiring board 36 extends to the direction of the wire box 33, and the wiring terminal 361 of the second end is inserted into the circuit board 32, and the electrical connection between the wiring board 36 and the circuit board 32 is realized after welding on the circuit board 32.

[0090] As shown in Figure 7 and Figure 8 , the second end of the terminal block 36 is provided with a first limiting rib 362, the wire box 33 is provided with a first limiting groove 332, and the first limiting rib 362 is inserted into the first limiting groove 332 along the insertion direction; and / or, the second end of the terminal block 36 is provided with a second limiting groove 363, the wire box 33 is provided with a second limiting rib 333, and the second limiting rib 333 is inserted into the second limiting groove 363 along the insertion direction; wherein the insertion direction is the direction in which the terminal block 36 is inserted into the wire box 33. In the embodiment, the insertion direction is the first direction, and the terminal block 36 is inserted into the wire box 33 along the first direction to achieve detachable connection between the coil 31 and the wire box 33.

[0091] Specifically, the second end of the terminal block 36 is provided with the first limiting rib 362 and the second limiting groove 363 on both sides along the second direction, and the wire box 33 is provided with the first limiting groove 332 and the second limiting rib 333 on both sides along the second direction. The first limiting rib 362 is inserted into the corresponding first limiting groove 332, and the second limiting groove 363 is inserted into the corresponding second limiting rib 333, so that the wire box 33 is stably connected with the terminal block 36 between the coil 31.

[0092] Referring to Figure 7 , Figure 8 and Figure 9 , the coil assembly 3 further includes a cover body 34, which is buckled on the wire box 33, so that the appearance quality of the coil assembly 3 is better after assembly. In the embodiment, the cover body 34 includes a first cover plate 341 and a second cover plate 342 arranged at an angle, the first cover plate 341 is provided with a fifth buckle 3411, and the second cover plate 342 is provided with a sixth buckle 3421; both ends of the second cover plate 342 are provided with a first wiring part 343, and the first wiring part 343 is provided with a threading hole 3431 and an operation hole 3432. The threading hole 3431 is used for threading external lead wires.

[0093] The wire box 33 comprises a box body 334 and a second wiring part 335 connected to the outside of the box body 334. The opening of the box body 334 faces the coil 31, the circuit board 32 is arranged in the box body 334, the seventh buckle 3341 or the third clamping hole is arranged on the outside of the box body 334, and the seventh buckle 3341 and the second wiring part 335 are arranged on different sides of the box body 334. The second wiring part 335 is provided with two wiring grooves 3351 spaced apart and a connecting plate 3352 between the two wiring grooves 3351; the wiring groove 3351 is provided with a wiring frame and a wiring screw 35 for realizing the wiring of the electromagnetic system. The fourth clamping hole 33521 or the eighth buckle is arranged on the connecting plate 3352; the operation hole 3432 is configured to extend into a tool for screwing the wiring screw 35, the external lead wire extends into the wiring groove 3351 through the threading hole 3431, and the tool extends into the operation hole 3432 to screw the wiring screw 35, so that the lead wire is pressed on the wiring frame.

[0094] The first cover plate 341 is arranged on the box body 334, the second cover plate 342 is attached to the connecting plate 3352; the two first wiring parts 343 are correspondingly inserted into the two wiring grooves 3351, the fifth buckle 3411 is clamped with the corresponding seventh buckle 3341 or third clamping hole; the sixth buckle 3421 is clamped with the corresponding fourth clamping hole 33521 or eighth buckle, realizing the clamping of the cover body 34 and the wire box 33. In this embodiment, the seventh buckle 3341 and the fourth clamping hole 33521 are arranged on the wire box 33, and the fifth buckle 3411 and the sixth buckle 3421 on the cover body 34 are clamped.

[0095] As shown in Figure 2 and Figure 10 The inner wall of the plug-in space 10 is provided with a sliding rail 13, the sliding rail 13 extends along the direction in which the electromagnetic unit 20 is inserted into the plug-in space 10 (i.e. the first direction), specifically, the inner wall of each of the two limiting side plates 11 of the base 1 is provided with a sliding rail 13. The sliding groove 6 is arranged on both sides of the coil 31 along the second direction, and the sliding groove 6 and the sliding rail 13 are slidably connected, guiding the insertion of the electromagnetic unit 20 into the base 1.

[0096] Further, the inner wall of the sliding groove 6 is provided with a curved structure 61, the curved structure 61 is in frictional contact with the surface of the sliding rail 13, which can reduce the contact area and friction when sliding, facilitating the simultaneous sliding of the coil 31 and the fixing assembly 4 into the base 1.

[0097] Specifically, the sliding groove 6 is arranged on the coil framework of the coil 31, and the sliding groove 6 is defined between the fixing frame 421 and the bottom plate 41.

[0098] As shown in Figure 10As shown, the housing 334 of the junction box 33 is provided with a slot 3342 that engages with one end of the slide rail 13. When the electromagnetic unit 20 is inserted into the base 1 along the first direction, one end of the slide rail 13 can be inserted into the slot 3342, limiting the vertical (i.e., third-direction) displacement of the coil 31 caused by the electromagnetic attraction when the coil 31 is energized.

[0099] like Figure 2 and Figure 10 As shown, the base 1 is provided with a first stop 14 and a second stop 15. The electromagnetic unit 20 stops at the first stop 14 in a first direction, and the second stop 15 and the bottom wall of the insertion space 10 limit the electromagnetic unit 20 in a third direction. When the electromagnetic unit 20 is inserted into the base 1, the first stop 14 is used to limit the electromagnetic unit 20 in the first direction, and the second stop 15 and the bottom support plate 12 of the base 1 together limit the electromagnetic unit 20 in a third direction, preventing displacement when the coil 31 generates electromagnetic attraction.

[0100] Example 2

[0101] like Figure 11 and Figure 12 As shown, based on the same inventive concept as Embodiment 1, this embodiment provides an electromagnetic system that differs from Embodiment 1.

[0102] In this embodiment, as Figure 11 and Figure 12 As shown, the outer wall of the support member 43 is provided with at least one abutment rib 434. The abutment rib 434 extends axially along the mounting shaft 22 and abuts against the inner wall of the limiting through hole 4211. That is, the abutment rib 434 extends along the second direction (Y direction). When the support member 43 is inserted into the limiting through hole 4211 along the second direction, the abutment rib 434 slides tightly against the inner wall of the limiting through hole 4211. After installation, the abutment with the inner wall of the limiting through hole 4211 prevents the support member 43 from loosening and falling off.

[0103] Furthermore, one or more abutment ribs 434 may be provided. For example, at least one abutment rib 434 may be provided on both sides of the support member 43 along the first direction and on both sides along the third direction.

[0104] In this embodiment, see Figure 12The outer wall of the support 43 is provided with a limiting protrusion 435, which is capable of being clamped into the through hole 4212 and matched with the inner wall of the through hole 4212 to limit the support 43 from being pulled out of the limiting through hole 4211. The through hole 4212 is in a U shape, and during the process of inserting the support 43 into the limiting through hole 4211, the limiting protrusion 435 first slides with the inner wall of the limiting through hole 4211, and after the support 43 is inserted into place, the limiting protrusion 435 moves to the position of the through hole 4212 and is matched with the bottom wall of the through hole 4212, thereby preventing the support 43 from being pulled out of the limiting through hole 4211 in the second direction.

[0105] In the embodiment, the side of the support 43 opposite to the limiting through hole 4211 is provided with a taking and placing portion 436, and the opposite sides of the taking and placing portion 436 are both provided with taking and placing grooves 437. The taking and placing grooves 437 on the two sides can form the taking and placing portion 436 on the support 43, and the operator can insert or pull out the support 43 from the limiting through hole 4211 through the taking and placing portion 436, thereby making the assembly and disassembly operation more convenient.

[0106] Specifically, each support 43 is provided with two semicircular taking and placing grooves 437, and the circular arc groove walls of the two taking and placing grooves 437 are close to each other.

[0107] Embodiment three

[0108] The embodiment provides a contactor, which comprises a contactor shell and the electromagnetic system as described in any one of the above embodiments, and the electromagnetic system is installed on the contactor shell. The contactor with the electromagnetic system has the beneficial effects as described above.

[0109] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation on the embodiments of the utility model. For the ordinary skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An electromagnetic system, characterized by, The application relates to a fixing assembly for a core assembly. The fixing assembly (4) is provided with a through hole (4212) in communication with the limiting hole (4211), and the mounting shaft (22) passes through the through hole (4212) into the limiting hole (4211) along the radial direction of the mounting shaft (22). One end of the supporting piece (43) is provided with a clamping flange (431) arranged along the outer periphery of the supporting piece (43) and surrounding the outer peripheral wall of the supporting piece (43) to form a clamping groove (432). The supporting piece (43) is provided with a limiting protrusion (435) on the outer wall, the limiting protrusion (435) can be clamped into the through hole (4212) and cooperates with the inner wall of the through hole (4212) to limit the supporting piece (43) from being taken out of the limiting hole (4211).

2. The electromagnetic system of claim 1, wherein, The outer wall of the supporting piece (43) and the inner wall of the limiting hole (4211) are provided with a guide protrusion (433) and a guide groove (4213) in a slidable manner.

3. The electromagnetic system of claim 2, wherein, The outer wall of the supporting piece (43) is provided with at least one abutting rib (434) extending along the axial direction of the mounting shaft (22), and the abutting rib (434) abuts against the inner wall of the limiting hole (4211). The side of the supporting piece (43) away from the limiting hole (4211) is provided with a taking and placing part (436), and the supporting piece (43) is provided with taking and placing grooves (437) on the opposite sides of the taking and placing part (436).

4. The electromagnetic system of claim 2, wherein, The fixing assembly (4) comprises a bottom plate (41) and a plurality of first mounting parts (42) arranged on the bottom plate (41), at least two first mounting parts (42) are arranged on the opposite sides of the core body (21), the first mounting part (42) is provided with the limiting hole (4211), and a gap exists between the core body (21) and the bottom plate (41).

5. The electromagnetic system of claim 1, wherein, ​ ​ ​ 6. The electromagnetic system of any one of claims 1-5, wherein, ​ 7. The electromagnetic system of any one of claims 1-5, wherein, The electromagnetic system further comprises a base (1) provided with a plug-in space (10) for plugging in the fixing assembly (4) and the core assembly (2); one of the fixing assembly (4) and the base (1) is provided with a first buckle (412), and the other of the fixing assembly (4) and the base (1) is provided with a first clamping hole (121), and the first buckle (412) is clamped in the first clamping hole (121); And / or, the electromagnetic system further comprises a coil assembly (3), the coil assembly (3) is sleeved on the core assembly (2), one of the fixing assembly (4) and the coil assembly (3) is provided with a positioning column (331), and the other of the fixing assembly (4) and the coil assembly (3) is provided with a positioning hole (411), and the positioning column (331) is inserted into the positioning hole (411).

8. The electromagnetic system of claim 7, wherein, The inner wall of the plug-in space (10) is provided with a sliding rail (13) extending in the direction of the insertion of the fixing assembly (4) into the plug-in space (10), and the fixing assembly (4) and the coil assembly (3) are both provided with a sliding groove (6) which is slidably connected with the sliding rail (13); The inner wall of the sliding groove (6) is provided with a curved structure (61) in frictional contact with the surface of the sliding rail (13); and / or, the coil assembly (3) is provided with a slot (3342) plugged into one end of the sliding rail (13).

9. The electromagnetic system of any one of claims 1-5, wherein, The electromagnetic system further comprises a coil assembly (3), the coil assembly (3) comprises a coil (31), a circuit board (32), a wire box (33) and a wiring board (36); The coil (31) is sleeved on the core assembly (2) and located outside the wire box (33); the circuit board (32) is arranged in the wire box (33), one end of the wiring board (36) is connected with the coil (31), and the other end of the wiring board (36) is plugged into the wire box (33) and provided with a terminal (361), the terminal (361) is electrically connected with the coil (31) and the circuit board (32).

10. The electromagnetic system of claim 9, wherein, The other end of the wiring board (36) is provided with a first limiting rib (362), and the wire box (33) is provided with a first limiting groove (332), and the first limiting rib (362) is inserted into the first limiting groove (332) in the plug-in direction; And / or, the other end of the wiring board (36) is provided with a second limiting groove (363), and the wire box (33) is provided with a second limiting rib (333), and the second limiting rib (333) is inserted into the second limiting groove (363) in the plug-in direction; And / or, the coil assembly (3) further comprises a cover (34) buckled on the wire box (33), the wire box (33) is provided with a wiring screw (35), the cover (34) is provided with an operation hole (3432), the operation hole (3432) is configured to extend into a tool for screwing the wiring screw (35); the cover (34) is snap connected with the wire box (33); Wherein, the plug-in direction is the direction in which the terminal block (36) is inserted into the wire box (33).

11. A contactor characterized by comprising: An electromagnetic system as claimed in any one of claims 1 to 10, mounted in a contactor housing.

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