Electromagnetic movable support structure for contactor

Abstract

An electromagnetic movable support structure for a contactor is characterized in that the bottom of a housing is opened and provided with a bottom plate, the upper part of the housing is movably provided with a support body, the upper end of the support body is located outside the upper part of the housing, and the lower end of the support body penetrates through the housing, is located inside the housing and is slidably connected with the housing; a first mounting groove for mounting a static iron core coil assembly is formed in the middle of the bottom plate; a movable iron core corresponding to the static iron core coil assembly is mounted in the middle of the lower end of the support body; spring fixing supports are detachably installed on the shell frame on the two sides of the static iron core coil assembly respectively, a reset spring is installed at the upper end of each spring fixing support, the two reset springs are located on the two sides of the movable iron core respectively and located over the first installation groove, the upper ends of the reset springs are matched with the lower end of the supporting body, and the reset springs are in a compressed state. Therefore, the width of the support structure and the material consumption are reduced, the cost is reduced, the width of the contactor is reduced, the action stability of the reset spring is ensured, the performance of the contactor is improved, the assembly is convenient, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contactor structures, in particular to an electromagnetic movable bracket structure for a contactor. Background Art

[0002] A contactor is a device used to frequently connect and disconnect AC and DC circuits and high-current control circuits over long distances. It is mainly composed of an electromagnetic mechanism, a contact system, an arc extinguishing device, and other important parts. When the coil of the static iron core coil assembly on the electromagnetic mechanism is energized, an electromagnetic force will be generated to cause the static and dynamic iron core coil assemblies to close. After the power is cut off, the dynamic iron core will reset, thereby causing the static and dynamic contacts to close and disconnect to control the current. The electromagnetic mechanism includes a bracket for installing the static iron core coil assembly and the dynamic iron core, which realizes the stable relative movement of the static iron core coil assembly and the dynamic iron core, and is an important part of the electromagnetic mechanism.

[0003] In the bracket structure of the existing electromagnetic mechanism, the reset of the moving iron core after power failure is achieved by installing reset springs on both sides of the static iron core coil assembly, and the lower end of the reset spring is connected to the bottom plate. However, the bracket structure of this installation method is relatively wide, so that the contactor occupies a large space when installed, and more materials are required to make the bracket. The installation structure of the reset spring is not convenient for assembly, and multiple operations are often required to complete the installation of the spring, which affects production efficiency. The stability of the reset spring is not good. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides an electromagnetic movable bracket structure for a contactor, thereby reducing the width and material usage of the bracket structure, reducing costs, reducing the width of the contactor, and ensuring the stability of the action of the reset spring, improving the performance of the contactor, facilitating assembly, and improving production efficiency.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An electromagnetic movable support structure for a contactor, comprising a shell frame, the bottom of the shell frame is open and equipped with a bottom plate, a support body is movably installed on the upper part of the shell frame, the upper end of the support body is located on the upper outer side of the shell frame, the lower end of the support body passes through the shell frame, is located inside the shell frame, and is slidably connected with the shell frame;

[0007] The middle part of the bottom plate is provided with a first mounting groove for mounting a static iron core coil assembly, and the middle part of the lower end of the support body is provided with a moving iron core corresponding to the static iron core coil assembly;

[0008] Spring fixing brackets are detachably mounted on the frames on both sides of the static iron core coil assembly, and a return spring is mounted on the upper end of each spring fixing bracket. The two return springs are respectively located on both sides of the moving iron core and directly above the first mounting groove. The upper end of the return spring cooperates with the lower end of the support body, and the return spring is in a compressed state.

[0009] As a further improvement of the above technical solution:

[0010] Guide blocks are arranged at the middle of both sides of the support body, and the housing frame is provided with a slide groove cooperating with the guide blocks, and the slide groove runs through the bottom of the housing frame;

[0011] A spring fixing bracket can be detachably mounted on the shell frame at one side of the slide slot.

[0012] The two spring fixing brackets are arranged diagonally relative to the two sliding grooves.

[0013] The structure of a single spring fixed bracket is:

[0014] It includes a bracket body, the upper end of the bracket body is a plug, a first protrusion is arranged on the bracket body on one side of the plug, the first protrusion is connected to the lower end of the reset spring, a slot matching the plug is arranged on the top of the inner cavity of the shell frame, and the lower part of the bracket body is clamped with the shell frame for fixing the bracket body on the shell frame.

[0015] A wedge-shaped protrusion is arranged on one side of the lower part of the bracket body, and a clamping hole is arranged on the side wall of the shell frame. The clamping hole is a through hole, and the wedge-shaped protrusion is clamped with the clamping hole.

[0016] The lower end of the bracket body is provided with an upwardly bent hook structure, and the lower end surface of the shell frame is provided with a slot matched with the hook structure.

[0017] The lower part of the bracket body is provided with an avoidance hole penetrating the lower end of the bracket body, and the outer sides of the first installation groove are provided with support blocks, which cooperate with the top of the avoidance hole.

[0018] The support body is provided with a second mounting groove for mounting the moving iron core, and the support body outside the second mounting groove is provided with a second protrusion connected to the reset spring, the second protrusion is located on one side of the slot, and the second protrusion is connected to the upper end of the reset spring.

[0019] The upper end of the support body is a moving contact mounting portion, and the moving contact mounting portion is correspondingly arranged at the static contact on the upper part of the frame, and the structure of the moving contact mounting portion is:

[0020] It includes a supporting part, a movable hole is provided on the supporting part, the movable hole is a through hole, a buffer spring is provided in the movable hole, the axial direction of the buffer spring is the same as the moving direction of the supporting body, a third protrusion is provided in the movable hole, a moving contact mounting piece is installed in the movable hole, two ends of the moving contact mounting piece are located outside the movable hole, and the size is larger than the width of the movable hole, a fourth protrusion is provided in the middle of the moving contact mounting piece, the fourth protrusion and the third protrusion are respectively connected to the two ends of the buffer spring, and the buffer spring is in a compressed state so that the moving contact mounting piece is subjected to pressure toward the static contact.

[0021] The movable contact mounting piece is a plate-shaped structure and is integrally formed. The fourth protrusion is an annular boss structure. The middle through hole of the annular boss structure passes through the movable contact mounting piece.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model has a compact and reasonable structure and is easy to operate. By detachably installing a spring fixing bracket on the shell frame, the installation position of the reset spring is set above the static iron core coil component, thereby reducing the width and material consumption of the bracket structure, reducing costs, and reducing the width of the contactor. At the same time, the stability of the action of the reset spring is guaranteed, the performance of the contactor is improved, the assembly is convenient, and the production efficiency is improved.

[0024] The utility model also has the following advantages:

[0025] (1) The return spring is arranged diagonally relative to the two slide grooves, and the sliding fit between the two sides of the middle of the support body and the shell frame is combined to ensure the overall force balance of the support body. Two return springs and their installation structure are used to achieve the stability of the relative movement between the static iron core coil assembly and the moving iron core with a simple structure.

[0026] (2) After the plug and the slot are matched, the horizontal position of the spring fixing bracket is limited; the clamping hole is located on one side of the slide groove, and after the wedge-shaped protrusion is inserted into the clamping hole, the end of the wedge-shaped protrusion contacts the inner wall of the clamping hole and supports the bracket body, thereby maintaining the vertical position of the spring fixing bracket. The installation of the spring fixing bracket is achieved through the plug-in and clamping structure, which has a simple structure and is easy to operate.

[0027] (3) The support block is located inside the avoidance hole and cooperates with the top of the avoidance hole to drag the bracket body from the side away from the hook structure to prevent the limit structure at the bottom of the bracket body from being insufficiently strong, thereby enhancing the strength of the installation structure of the spring fixed bracket;

[0028] (4) A plate-shaped moving contact mounting member is used, and one member realizes two functions of installing the moving contact and guiding the moving contact's movement direction. At the same time, the moving contact mounting part has a simple structure, is easy to assemble, and is not prone to falling parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model.

[0030] Figure 2 It is an exploded view of the utility model.

[0031] Figure 3 This is an exploded view of the utility model (from another perspective).

[0032] Figure 4 It is a cross-sectional view of the utility model.

[0033] Figure 5 It is a structural schematic diagram of the bottom plate of the utility model.

[0034] Figure 6 It is a structural schematic diagram of the shell frame of the utility model.

[0035] Figure 7 It is a structural schematic diagram of the shell frame of the utility model (bottom perspective).

[0036] Figure 8 It is a cross-sectional view of the shell frame of the utility model.

[0037] Fig. 9 It is a structural schematic diagram of the spring fixing bracket of the utility model.

[0038] Fig.10 It is a structural schematic diagram of the support body of the utility model.

[0039] Fig.11 It is a structural schematic diagram of the support body of the utility model (bottom perspective).

[0040] Fig.12 It is a structural schematic diagram (explosion diagram) of the support body of the utility model.

[0041] Fig.13 It is a structural schematic diagram of the movable contact installation part of the utility model (partial cross-section).

[0042] in:

[0043] 1. Support body;

[0044] 10. second mounting groove; 11. guide block; 12. second protrusion;

[0045] 13. Moving contact mounting portion; 1301. Support portion; 1302. Active hole; 1303. Moving contact mounting piece; 1304. Fourth protrusion; 1305. Buffer spring; 1306. Third protrusion;

[0046] 2. Moving iron core; 3. Return spring;

[0047] 4. Spring fixing bracket; 40. Bracket body; 41. Wedge-shaped protrusion; 410. Avoidance hole; 42. Hook structure; 43. First protrusion; 44. Plug;

[0048] 5. Shell frame; 51. Slide slot; 52. Card slot; 53. Card hole; 54. Slot;

[0049] 6. Bottom plate; 61. First mounting slot; 62. Support block; 7. Static iron core coil assembly. DETAILED DESCRIPTION

[0050] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0051] Embodiment 1:

[0052] like Figure 1-Figure 4 As shown, the electromagnetic movable support structure for the contactor of this embodiment includes a shell frame 5, the bottom of the shell frame 5 is open and is installed with a bottom plate 6, the upper part of the shell frame 5 is movably installed with a support body 1, the upper end of the support body 1 is located on the upper outer side of the shell frame 5, and the lower end of the support body 1 passes through the shell frame 5 and is located inside the shell frame 5, and is slidably connected with the shell frame 5;

[0053] A first mounting groove 61 for mounting the static iron core coil assembly 7 is provided in the middle of the bottom plate 6, and a moving iron core 2 corresponding to the static iron core coil assembly 7 is mounted in the middle of the lower end of the support body 1;

[0054] Spring fixing brackets 4 are detachably mounted on the shell frames 5 on both sides of the static iron core coil assembly 7, and a return spring 3 is mounted on the upper end of each spring fixing bracket 4. The two return springs 3 are respectively located on both sides of the moving iron core 2 and directly above the first mounting groove 61. The upper end of the return spring 3 cooperates with the lower end of the support body 1, and the return spring 3 is in a compressed state.

[0055] Specifically, the frame 5 is in the shape of a shell, with an opening at the bottom, a passage for passing through the upper movable contact mounting portion 13 of the support body 1, and an opening for mounting the static iron core coil assembly 7 on one side. Figure 6 As shown; the axial direction of the return spring 3 is the same as the moving direction of the support body 1.

[0056] A spring fixing bracket 4 is provided to transfer the installation position of the lower end of the reset spring 3 from both sides of the first installation groove 61 to directly above the first installation groove 61, and the reset spring 3 is installed in the narrow space between the support body 1 and the static iron core coil assembly 7, so that the length of the reset spring 3 can be smaller than the length of the reset spring in the prior art. Since the position of the support body 1 on both sides of the moving iron core 2 is fully utilized, the selection range of the center diameter of the reset spring 3 is larger. Under the working force conditions within the design range, the reset spring 3 of this embodiment can select a reset spring 3 with a larger center diameter, which is easy to install on the one hand, and on the other hand, the length of the reset spring 3 can be shorter, and it is not easy to bend and deform during the short action, the action stability is higher, and the assembly process is also more convenient.

[0057] The spring fixing bracket 4 can be detachably mounted on the frame 5, and the mounting position of the reset spring 3 is set above the static iron core coil assembly 7, so as to reduce the width of the bracket structure and the amount of material used, reduce the cost, and reduce the width of the contactor. At the same time, the stability of the action of the reset spring 3 is ensured, the performance of the contactor is improved, the assembly is convenient, and the production efficiency is improved.

[0058] The electromagnetic movable bracket structure of this embodiment can adapt to the moving iron core 2 and the static iron core coil assembly 7 of the original contactor without changing the original appearance structure of the moving iron core 2 and the static iron core coil assembly 7, avoiding repeated mold opening, reducing redundant material management, and facilitating cost control.

[0059] Further, if Figure 2-Figure 4 As shown, guide blocks 11 are provided at the middle of both sides of the support body 1, and a slide groove 51 cooperating with the guide block 11 is provided on the shell frame 5, and the slide groove 51 runs through the bottom of the shell frame 5;

[0060] The spring fixing bracket 4 is detachably mounted on the housing frame 5 at one side of the slide groove 51 .

[0061] Specifically, Figure 4 As shown, when the moving iron core 2 and the stationary iron core coil assembly 7 are not attracted, under the action of the return spring 3 , the guide block 11 is located at the uppermost end of the slide slot 51 .

[0062] Further, if Figure 3-Figure 4 As shown, the two spring fixing brackets 4 are arranged diagonally relative to the two sliding grooves 51 .

[0063] Specifically, the return spring 3 is arranged diagonally relative to the two slide grooves 51, and combined with the sliding cooperation relationship between the two sides of the middle of the support body 1 and the shell frame 5, the overall force balance of the support body 1 is ensured. By using two return springs 3 and their installation structure, the stability of the relative movement between the static iron core coil assembly 7 and the moving iron core 2 can be achieved with a simple structure.

[0064] Further, if Figure 2-Figure 9 As shown, the structure of a single spring fixing bracket 4 is:

[0065] It includes a bracket body 40, the upper end of the bracket body 40 is a plug 44, a first protrusion 43 is provided on the bracket body 40 on one side of the plug 44, the first protrusion 43 is connected to the lower end of the reset spring 3, and a slot 54 matching the plug 44 is provided at the top of the inner cavity of the shell frame 5. The lower part of the bracket body 40 is clamped with the shell frame 5 for fixing the bracket body 40 on the shell frame 5.

[0066] Furthermore, the structure of the lower part of the bracket body 40 being connected to the housing frame 5 specifically includes:

[0067] like Figure 2-Figure 9 As shown, a wedge-shaped protrusion 41 is provided on one side of the lower part of the bracket body 40 , and a clamping hole 53 is provided on the side wall of the shell frame 5 . The clamping hole 53 is a through hole, and the wedge-shaped protrusion 41 is clamped with the clamping hole 53 .

[0068] Specifically, the bracket body 40 and the plug 44 are both sheet structures. After the plug 44 and the slot 54 are matched, the horizontal position of the spring fixing bracket 4 is limited and the assembly guide is used to achieve rapid assembly; the clamping hole 53 is located on one side of the slide groove 51. After the wedge-shaped protrusion 41 is inserted into the clamping hole 53, the end of the wedge-shaped protrusion 41 contacts the inner wall of the clamping hole 53 and supports the bracket body 40, maintaining the vertical position of the spring fixing bracket 4. In addition, during disassembly, the end of the wedge-shaped protrusion 41 can be quickly disassembled and replaced by external force, and reused. The installation of the spring fixing bracket 4 is achieved through the plug-in and clamping structure, which has a simple structure and is easy to operate.

[0069] like Figure 2-Figure 9 As shown, the lower end of the bracket body 40 is provided with an upwardly bent hook structure 42 , and the lower end surface of the shell frame 5 is provided with a slot 52 that cooperates with the hook structure 42 .

[0070] Specifically, the hook structure 42 is hooked on the side of the slot 52 , and the tail end of the hook structure 42 is located inside the slot 52 , limiting the horizontal position of the spring fixing bracket 4 from the lower end of the bracket body 40 .

[0071] Further, if Figure 2-Figure 9 As shown, the lower part of the bracket body 40 is provided with an avoidance hole 410 penetrating the lower end of the bracket body 40 , and the outer sides of the first installation groove 61 are provided with support blocks 62 , and the support blocks 62 cooperate with the top of the avoidance hole 410 .

[0072] Specifically, the avoidance hole 410 is located below the wedge-shaped protrusion 41, and the end of the wedge-shaped protrusion 41 is the top of the avoidance hole 410; the support block 62 is located inside the avoidance hole 410 and cooperates with the top of the avoidance hole 410, so as to drag the bracket body 40 from the side away from the hook structure 42, thereby preventing the limiting structure at the lower part of the bracket body 40 from being insufficiently strong, and enhancing the strength of the installation structure of the spring fixing bracket 4; preferably, the side surface of the first installation groove 61 contacts the spring fixing bracket 4, so as to further limit the lower part of the spring fixing bracket 4 in the horizontal direction.

[0073] The spring fixing bracket 4 adopts multiple hooks to cooperate, which solves the problem of installing the rebound device in a narrow place due to insufficient space.

[0074] Further, if Figure 2-Figure 12 As shown, a second mounting groove 10 for mounting the moving iron core 2 is provided on the support body 1, and a second protrusion 12 connected to the reset spring 3 is provided on the support body 1 outside the second mounting groove 10. The second protrusion 12 is located on one side of the slot 54, and the second protrusion 12 is connected to the upper end of the reset spring 3.

[0075] For the return spring 3 with a smaller length, the first protrusion 43 and the second protrusion 12 are not only the installation parts of the return spring 3, but also play a certain fixed limit assembly guide role during the deformation process of the return spring 3, making the movement of the return spring 3 more stable.

[0076] In addition, the outer side surface of the second mounting groove 10 and the outer side surface of the slot 54 can also play a certain guiding role in the deformation of the return spring 3, so that the bending deformation of the return spring 3 during the operation is limited;

[0077] The reset spring 3 in the prior art is not only longer than the reset spring 3 of the present embodiment, but also has a certain bending deformation and is prone to bouncing during its movement due to the lack of an effective guiding structure, which affects the performance of the contactor. The installation structure of the reset spring 3 of the present embodiment facilitates the installation of the reset spring 3 while also ensuring the performance of the reset spring 3.

[0078] The assembly process of the electromagnetic movable bracket structure for the contactor in this embodiment is as follows:

[0079] First, the support body 1 is slidably mounted on the housing frame 5, and the support body 1 is equipped with a moving iron core 2;

[0080] Then, one end of the return spring 3 is connected to the second protrusion 12 on the support body 1;

[0081] When the plug 44 of the spring fixing bracket 4 is inserted into the slot 54 on the shell frame 5, the other end of the return spring 3 is connected with the first protrusion 43 on the spring fixing bracket 4, the wedge-shaped protrusion 41 is located in the clamping hole 53, the clamping hook structure 42 cooperates with the clamping groove 52, and the spring fixing bracket 4 is fixedly connected with the shell frame 5;

[0082] Finally, the bottom plate 6 is installed at the bottom opening of the shell frame 5. During the installation of the bottom plate 6, the support block 62 slides along the avoidance hole 410 and finally contacts the wedge-shaped protrusion 41. Then, the bottom plate 6 is fixedly connected to the shell frame 5 using fasteners.

[0083] Embodiment 2:

[0084] In the prior art, there are still problems that the movable contact installation structure on the support body is inconvenient to assemble and replace, and the limiting parts are not in place and are easy to fall off. The electromagnetic movable bracket structure for the contactor in this embodiment optimizes this part of the structure on the basis of the first embodiment.

[0085] like Figure 10-13 As shown, the upper end of the support body 1 is a moving contact mounting portion 13, and the moving contact mounting portion 13 corresponds to the static contact disposed on the upper part of the housing frame 5. The structure of the moving contact mounting portion 13 is:

[0086] The movable hole 1302 is a through hole. A buffer spring 1305 is arranged in the movable hole 1302. The axial direction of the buffer spring 1305 is the same as the moving direction of the support body 1. A third protrusion 1306 is arranged in the movable hole 1302. A moving contact mounting member 1303 is installed in the movable hole 1302. Both ends of the moving contact mounting member 1303 are located outside the movable hole 1302 and are larger than the width of the movable hole 1302. A fourth protrusion 1304 is arranged in the middle of the moving contact mounting member 1303. The fourth protrusion 1304 and the third protrusion 1306 are respectively connected to both ends of the buffer spring 1305. The buffer spring 1305 is in a compressed state so that the moving contact mounting member 1303 is subjected to pressure toward the static contact.

[0087] Specifically, the moving contact mounting portion 13 is used to install a bridge-type moving contact structure, the movable hole 1302 is a rectangular through hole, the middle of the moving contact mounting piece 1303 slides with the two side surfaces of the rectangular through hole, and the two ends of the moving contact mounting piece 1303 located outside the movable hole 1302 form a hooking limit with the movable hole 1302, which is used to limit the moving contact mounting piece 1303 from being separated from the movable hole 1302.

[0088] Further, if Figure 12-13 As shown, the moving contact mounting member 1303 is a plate-shaped structure and is integrally formed, and the fourth protrusion 1304 is an annular boss structure, and a middle through hole of the annular boss structure passes through the moving contact mounting member 1303 .

[0089] The movable contact mounting part 1303 with a plate-like structure can realize two functions of mounting the movable contact and guiding the moving direction of the movable contact in one component. Meanwhile, the movable contact mounting part 13 has a simple structure, is easy to assemble, and is not prone to the problem of parts falling off.

[0090] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. An electromagnetic movable support structure for a contactor, characterized in that: The invention comprises a shell frame (5), the bottom of the shell frame (5) is open and is provided with a bottom plate (6), the upper part of the shell frame (5) is movably provided with a support body (1), the upper end of the support body (1) is located on the upper outer side of the shell frame (5), the lower end of the support body (1) passes through the shell frame (5) and is located inside the shell frame (5), and is slidably connected with the shell frame (5); A first mounting groove (61) for mounting a stationary iron core coil assembly (7) is provided in the middle of the bottom plate (6), and a moving iron core (2) corresponding to the stationary iron core coil assembly (7) is mounted in the middle of the lower end of the support body (1); Spring fixing brackets (4) are detachably mounted on the shell frames (5) on both sides of the stationary iron core coil assembly (7), and a return spring (3) is mounted on the upper end of each spring fixing bracket (4). The two return springs (3) are respectively located on both sides of the moving iron core (2) and directly above the first mounting groove (61). The upper end of the return spring (3) cooperates with the lower end of the support body (1), and the return spring (3) is in a compressed state.

2. The electromagnetic movable support structure for a contactor according to claim 1, characterized in that: Guide blocks (11) are provided in the middle of both sides of the support body (1), and a slide groove (51) cooperating with the guide block (11) is provided on the shell frame (5), and the slide groove (51) passes through the bottom of the shell frame (5); A spring fixing bracket (4) is detachably mounted on the housing frame (5) at one side of the slide groove (51).

3. The electromagnetic movable support structure for a contactor as claimed in claim 2, characterized in that: The two spring fixing brackets (4) are arranged diagonally relative to the two sliding grooves (51).

4. The electromagnetic movable support structure for a contactor according to claim 1, characterized in that: The structure of a single spring fixing bracket (4) is as follows: The invention comprises a bracket body (40), the upper end of the bracket body (40) is a plug (44), a first protrusion (43) is arranged on the bracket body (40) on one side of the plug (44), the first protrusion (43) is connected to the lower end of the reset spring (3), a slot (54) matching with the plug (44) is arranged on the top of the inner cavity of the shell frame (5), and the lower part of the bracket body (40) is snap-connected with the shell frame (5) for fixing the bracket body (40) on the shell frame (5).

5. The electromagnetic movable support structure for a contactor as claimed in claim 4, characterized in that: A wedge-shaped protrusion (41) is provided on one side of the lower part of the bracket body (40), and a clamping hole (53) is provided on the side wall of the shell frame (5). The clamping hole (53) is a through hole, and the wedge-shaped protrusion (41) is clamped with the clamping hole (53).

6. The electromagnetic movable support structure for a contactor according to claim 4, characterized in that: The lower end of the bracket body (40) is provided with an upwardly bent hook structure (42), and the lower end surface of the shell frame (5) is provided with a slot (52) that cooperates with the hook structure (42).

7. The electromagnetic movable support structure for a contactor according to claim 4, characterized in that: The lower part of the bracket body (40) is provided with an avoidance hole (410) penetrating the lower end of the bracket body (40), and the outer sides of the first installation groove (61) are provided with support blocks (62), and the support blocks (62) cooperate with the top of the avoidance hole (410).

8. The electromagnetic movable support structure for a contactor according to claim 4, characterized in that: The support body (1) is provided with a second mounting groove (10) for mounting the moving iron core (2); a second protrusion (12) connected to the return spring (3) is provided on the support body (1) outside the second mounting groove (10); the second protrusion (12) is located on one side of the slot (54); and the second protrusion (12) is connected to the upper end of the return spring (3).

9. An electromagnetic movable support structure for a contactor according to any one of claims 1 to 7, characterized in that: The upper end of the support body (1) is a moving contact mounting portion (13), and the moving contact mounting portion (13) is arranged corresponding to the static contact on the upper part of the housing frame (5). The structure of the moving contact mounting portion (13) is as follows: The invention comprises a support portion (1301), wherein the support portion (1301) is provided with a movable hole (1302), the movable hole (1302) is a through hole, a buffer spring (1305) is provided in the movable hole (1302), the axial direction of the buffer spring (1305) is the same as the moving direction of the support body (1), a third protrusion (1306) is provided in the movable hole (1302), a moving contact mounting member (1303) is installed in the movable hole (1302), and the moving contact mounting member (1303) is provided in the movable hole (1302). The two ends of the mounting part (1303) are located outside the movable hole (1302) and are larger than the width of the movable hole (1302). A fourth protrusion (1304) is provided in the middle of the movable contact mounting part (1303). The fourth protrusion (1304) and the third protrusion (1306) are respectively connected to the two ends of the buffer spring (1305). The buffer spring (1305) is in a compressed state so that the movable contact mounting part (1303) is subjected to pressure toward the static contact.

10. The electromagnetic movable support structure for a contactor according to claim 9, characterized in that: The movable contact mounting member (1303) is a plate-shaped structure and is integrally formed, and the fourth protrusion (1304) is an annular boss structure, and a central through hole of the annular boss structure passes through the movable contact mounting member (1303).

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