Electromagnet assembly of electromagnetic trip type disconnecting switch

Abstract

The utility model belongs to the technical field of switches, and particularly relates to an electromagnet assembly of an electromagnetic trip type disconnecting switch, which comprises a shell assembly, an electromagnetic assembly and a compression spring, the shell assembly comprises a separable shell and a push block, the shell is integrally formed and comprises a first outer ring part and a first connecting disc, and the push block is integrally formed and comprises a second outer ring part and a second connecting disc. Comprising a second outer ring part and a second connecting disc, and the first connecting disc and the second connecting disc are arranged away from each other; the electromagnetic assembly comprises a coil winding, an iron core and a magnet, the coil winding is fixed in the shell and provided with a center hole, the iron core and the center hole of the coil winding are coaxially arranged, one end of the iron core is fixedly connected with the first connecting disc or the second connecting disc, and the magnet is fixed to the second connecting disc or the first connecting disc. And the compression spring is arranged between the coil winding and the second connecting disc. The shell and the push block are simple in structure and can be directly formed through integral stretching, the process can be relatively simple, and rapid mass production can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of switch technology, specifically relating to an electromagnet assembly for an electromagnetic tripping disconnect switch. Background Technology

[0002] The applicant's prior patent CN202320854788.7 discloses a rotary switch, including a housing, a tripping transmission mechanism, and an electromagnetic drive mechanism. The electromagnetic drive mechanism drives the tripping transmission mechanism to open the rotary switch when it is in the closed state. The electromagnetic drive mechanism includes an electromagnetic coil fixing component with an electromagnetic coil fixed thereon, an electromagnetic drive block, and a spring. A magnetic attraction or repulsion force is formed between the electromagnetic drive block and the electromagnetic coil fixing component. The electromagnetic coil fixing component is integrally formed, including an outer housing and an inner iron core, resulting in a complex structure that requires powder alloy die casting. This leads to complex manufacturing and surface treatment processes, and limited production capacity. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an electromagnet assembly for an electromagnetic tripping disconnect switch.

[0004] The technical solution adopted by this utility model is as follows: an electromagnet assembly for an electromagnetic tripping disconnect switch, comprising a housing assembly, an electromagnetic assembly, and a compression spring.

[0005] The housing assembly includes a separable outer shell and a push block. The outer shell is integrally formed and includes a first outer ring portion and a first connecting plate disposed at one end of the first outer ring portion. The push block is integrally formed and includes a second outer ring portion and a second connecting plate disposed at one end of the second outer ring portion. The first connecting plate and the second connecting plate are disposed away from each other.

[0006] The electromagnetic component includes a coil winding, an iron core, and a magnet. The coil winding is fixed inside the outer shell and has a central hole. The iron core is coaxially arranged with the central hole of the coil winding and one end of the iron core is fixedly connected to a first connecting plate or a second connecting plate. The magnet is fixed on the second connecting plate or the first connecting plate.

[0007] A compression spring is positioned between the coil winding and the second connecting disc.

[0008] The iron core is located inside the central hole of the coil winding, and one end of it passes through the central hole of the coil winding and is fixedly connected to the second connecting plate. The magnet is fixed on the first connecting plate.

[0009] One end of the iron core is flat and the other end is provided with a protruding connecting post. The second connecting plate has a through hole in the center. The connecting post passes through the through hole and the two are fixed by riveting.

[0010] The coil winding is wound and fixed outside the coil frame, the coil frame is fixedly connected to the outer shell, and the magnet is fixed between the coil frame and the first connecting plate.

[0011] The coil frame has a first limiting groove at one end, and the magnet is fixed in the first limiting groove.

[0012] The central hole of the coil frame is connected to the first limiting groove, and a non-magnetic pad is provided between the magnet and the bottom of the first limiting groove.

[0013] The compression spring abuts against the coil frame and the second connecting plate at both ends.

[0014] The outer diameters of the first outer ring and the second outer ring are matched.

[0015] The coil frame end face is provided with a second limiting groove that cooperates with the compression spring. The compression spring is a tower-shaped spring, with its large end abutting against the second connecting plate and its outer circumference matching the inner diameter of the second outer ring, and its small end located in the second limiting groove.

[0016] The second limiting groove is provided with a limiting boss, one side of which is a sloping surface and the other side is a blocking surface.

[0017] The beneficial effects of this utility model are as follows: The outer shell and push block structure of this utility model are simple and can be directly formed by integral stretching, which makes the process relatively simple and can be quickly mass-produced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of one embodiment of the present invention;

[0021] Figure 3 for Figure 1 Sectional view along the AA direction;

[0022] Figure 4 This is a cross-sectional view of the coil frame in one embodiment of the present invention;

[0023] Figure 5 This is a perspective view of the coil frame in one embodiment of the present invention;

[0024] In the figure, the outer shell is 1, the first outer ring is 101, the first connecting plate is 102, the push block is 2, the second outer ring is 201, the second connecting plate is 202, the coil winding is 3, the iron core is 4, the connecting post is 401, the magnet is 5, the compression spring is 6, the coil frame is 7, the first limiting groove is 701, the second limiting groove is 702, the ramp surface is 703, the blocking surface is 704, and the non-magnetic pad is 8. Detailed Implementation

[0025] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0026] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0027] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0028] An electromagnet assembly for an electromagnetic tripping disconnect switch includes a housing assembly, an electromagnetic assembly, and a compression spring 6.

[0029] The housing assembly includes a separable outer shell 1 and a push block 2. The outer shell 1 is integrally formed and includes a first outer ring portion 101 and a first connecting plate disposed at one end of the first outer ring portion 101. The push block 2 is integrally formed and includes a second outer ring portion 201 and a second connecting plate 202 disposed at one end of the second outer ring portion 201. The first connecting plate 102 and the second connecting plate 202 are disposed away from each other.

[0030] The electromagnetic component includes a coil winding 3, an iron core 4, and a magnet 5. The coil winding 3 is fixed inside the outer shell 1 and has a central hole. The iron core 4 is coaxially arranged with the central hole of the coil winding 3 and one end of it is fixedly connected to the first connecting plate 102 or the second connecting plate 202. The magnet 5 is fixed on the second connecting plate 202 or the first connecting plate 102.

[0031] The compression spring 6 is positioned between the coil winding 3 and the second connecting disc 202. The outer shell 1 and the push block 2 have a simple structure and are integrally stretched, which simplifies the process and allows for rapid mass production.

[0032] Push block 2, iron core 4, and outer shell 1 are preferably made of pure iron with good demagnetizing properties.

[0033] Furthermore, the iron core 4 is located inside the central hole of the coil winding 3, with one end extending out of the central hole and fixedly connected to the second connecting plate 202. The magnet 5 is fixed to the first connecting plate 102. In the applicant's prior patent CN202320854788.7, the contact surface between the push block and the outer shell is flush with the contact surface between the iron core and the magnet. In this embodiment, one end of the iron core 4 is fixedly connected to the second connecting plate 202, and the other end extends into the coil winding 3 and is positioned close to the second connecting plate 202. This avoids the contact end face of the iron core 4 and the magnet 5 forming a weak point at the junction of the first outer ring portion 101 and the second outer ring portion 201, thus preventing them from easily separating due to vibration during storage and transportation.

[0034] Furthermore, one end of the iron core 4 is flat, and the other end is provided with a protruding connecting post 401. The second connecting plate 202 has a through hole in its center, and the connecting post 401 passes through the through hole and the two are fixed together by riveting. Manufacturing is simple.

[0035] Furthermore, the coil winding 3 is wound and fixed outside the coil frame 7, the coil frame 7 is fixedly connected to the outer shell 1, and the magnet 5 is fixed between the coil frame 7 and the first connecting plate 102. Specifically, one end of the coil frame 7 is provided with a first limiting groove 701, and the magnet 5 is fixed in the first limiting groove 701. Assembly is convenient.

[0036] Furthermore, the central hole of the coil frame 7 is connected to the first limiting groove 701, and a non-magnetic pad 8 is provided between the magnet 5 and the bottom of the first limiting groove 701. The non-magnetic pad 8 can prevent repeated attraction and impact from damaging the surface of the magnet 5.

[0037] Furthermore, the two ends of the compression spring 6 abut against the coil frame 7 and the second connecting disc 202.

[0038] The outer diameters of the first outer ring portion 101 and the second outer ring portion 201 are adapted to each other. Together, they form a shell assembly structure with a nearly uniform outer diameter.

[0039] Furthermore, the coil frame 7 has a second limiting groove 702 on its end face that cooperates with the compression spring 6. The compression spring 6 is a tower-shaped spring, with its large end abutting against the second connecting plate 202 and its outer circumference matching the inner diameter of the second outer ring 201, and its small end located in the second limiting groove 702. This fully utilizes the internal space of the housing assembly to achieve stable limiting of the compression spring 6.

[0040] Furthermore, a limiting boss is provided in the second limiting groove 702. One side of the limiting boss is a sloped surface 703, and the other side is a blocking surface 704. One end of the compression spring 6 abuts against the blocking surface 704, which can prevent the compression spring 6 from rotating.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electromagnet assembly for an electromagnetic tripping disconnect switch, comprising a housing assembly, an electromagnetic assembly, and a compression spring (6), characterized in that: The housing assembly includes a separable outer shell (1) and a push block (2). The outer shell (1) is integrally formed and includes a first outer ring (101) and a first connecting plate (102) disposed at one end of the first outer ring (101). The push block (2) is integrally formed and includes a second outer ring (201) and a second connecting plate (202) disposed at one end of the second outer ring (201). The first connecting plate (102) and the second connecting plate (202) are disposed away from each other. The electromagnetic assembly includes a coil winding (3), an iron core (4), and a magnet (5). The coil winding (3) is fixed inside the outer shell (1) and has a central hole. The iron core (4) is coaxially arranged with the central hole of the coil winding (3) and one end of it is fixedly connected to the first connecting plate (102) or the second connecting plate (202). The magnet (5) is fixed on the second connecting plate (202) or the first connecting plate (102). A compression spring (6) is disposed between the coil winding (3) and the second connecting plate (202).

2. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 1, characterized in that: The iron core (4) is located inside the center hole of the coil winding (3) and one end of it passes through the center hole of the coil winding (3) and is fixedly connected to the second connecting plate (202). The magnet (5) is fixed on the first connecting plate (102).

3. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 2, characterized in that: The iron core (4) has a flat surface at one end and a protruding connecting post (401) at the other end. The second connecting plate (202) has a through hole in the center. The connecting post (401) passes through the through hole and the two are fixed by riveting.

4. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 3, characterized in that: The coil winding (3) is wound and fixed outside the coil frame (7), the coil frame (7) is fixedly connected to the outer shell (1), and the magnet (5) is fixed between the coil frame (7) and the first connecting plate (102).

5. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 4, characterized in that: The coil frame (7) has a first limiting groove (701) at one end, and the magnet (5) is fixed in the first limiting groove (701).

6. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 5, characterized in that: The center hole of the coil frame (7) is connected to the first limiting groove (701), and a non-magnetic pad (8) is provided between the magnet (5) and the bottom of the first limiting groove (701).

7. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 4, characterized in that: The compression spring (6) abuts against the coil frame (7) and the second connecting plate (202) at both ends.

8. The electromagnet assembly of the electromagnetic tripping disconnect switch according to any one of claims 1-7, characterized in that: The outer diameters of the first outer ring (101) and the second outer ring (201) are adapted.

9. The electromagnet assembly of the electromagnetic tripping disconnector according to any one of claims 4-7, characterized in that: The outer diameters of the first outer ring (101) and the second outer ring (201) are adapted to each other; the end face of the coil frame (7) is provided with a second limiting groove (702) that cooperates with the compression spring (6). The compression spring (6) is a tower-shaped spring, with its large end abutting against the second connecting plate (202) and its outer circumference adapted to the inner diameter of the second outer ring (201), and its small end located in the second limiting groove (702).

10. The electromagnet assembly of the electromagnetic tripping disconnect switch according to claim 9, characterized in that: The second limiting groove (702) is provided with a limiting boss, one side of which is a slope surface (703) and the other side is a blocking surface (704).

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