Electromagnet fixing structure for circuit breaker and circuit breaker

Abstract

The electromagnet fixing structure comprises a pressing plate, the pressing plate comprises a middle main body, the middle main body is provided with a fixed installation part, and the middle main body is provided with a plurality of elastic pressing cantilevers which are mutually independent and can generate elastic deformation relative to the middle main body after being stressed along the side edge direction. The elastic pressing cantilevers are configured in a way that when the pressing plate and the circuit breaker mechanism main body are assembled in place through the fixed installation part, the elastic pressing cantilevers generate elastic pressing and fixing effects on the top end faces of the electromagnets preassembled on the circuit breaker mechanism main body independently. When the elastic pressing cantilevers on the pressing plate are matched with the electromagnets in a pressing manner, the elastic pressing cantilevers can be stressed independently to generate elastic deformation, so that an elastic pressing and fixing effect is generated, and the corresponding electromagnets are pressed and fixed on the circuit breaker mechanism main body.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an electromagnet fixing structure for a circuit breaker and the circuit breaker. Background Art

[0002] The control electromagnets (closing electromagnet, shunt electromagnet, undervoltage electromagnet) of existing frame circuit breakers are basically fixed to the mechanism body by a flat structural pressure plate locked on the mechanism body by fastening screws. However, due to factors such as differences in the height of various components such as the electromagnet, uneven surfaces of the pressure plate or the mechanism body, some electromagnets cannot be pressed and fixed by the pressure plate, and are prone to loosening during the operation of the electromagnet, which in turn affects the reliability of the electromagnet's driving of the mechanism. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides an electromagnet fixing structure for a circuit breaker. When the elastic pressing cantilever arms on the pressure plate are pressed together with the electromagnets, they can be independently subjected to force and produce elastic deformation, thereby generating an elastic pressing and fixing effect and pressing and fixing the corresponding electromagnets to the circuit breaker mechanism body.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] An electromagnet fixing structure for a circuit breaker includes a pressure plate, which includes a central body with a fixed mounting portion. The central body is formed with a plurality of independent elastic pressure cantilever arms along its sides, each of which is capable of elastically deforming relative to the central body when subjected to force. Each elastic pressure cantilever arm is configured such that, when the pressure plate is assembled with the circuit breaker mechanism body via the fixed mounting portion, each elastic pressure cantilever arm independently and mutually exerts an elastic pressure and fixing effect on the top surface of each electromagnet pre-installed on the circuit breaker mechanism body.

[0006] Furthermore, the fixing and mounting portion is a screw hole structure provided on the middle body, and the pressing plate is configured to be fixed on the middle fixing column of the circuit breaker mechanism body by screws passing through the screw hole structure.

[0007] Furthermore, each elastic pressure cantilever is provided with a boss for pressing the electromagnet, and when the boss contacts the top surface of the electromagnet, a certain gap is reserved between the intermediate body and the intermediate fixing column of the circuit breaker mechanism body, so that when the screw is further tightened to lock the intermediate body and the intermediate fixing column, each elastic pressure cantilever can generate elastic bending deformation accordingly to produce an elastic pressure fixing effect on the electromagnet.

[0008] Furthermore, four elastic pressing cantilevers are extended from the middle body, and spaced slots are formed between adjacent elastic pressing cantilevers, so that each elastic pressing cantilevers can generate elastic deformation independently when subjected to force.

[0009] Furthermore, a spacing support portion is provided on the intermediate body, which is adapted to the distance between the two electromagnets spaced apart on the circuit breaker mechanism body, and the spacing support portion is provided corresponding to the spacing slot position between adjacent elastic pressing cantilevers.

[0010] Furthermore, the pressing plate is an integrally formed structure.

[0011] Furthermore, the spacing support portion is integrally formed by bending the remaining material obtained by punching the spacing slots between adjacent elastic pressing cantilevers.

[0012] Furthermore, the pressing plate is integrally formed from a metal plate having elastic deformation properties.

[0013] Furthermore, the metal plate is a stainless steel metal plate or an aluminum alloy metal plate.

[0014] Based on the same inventive concept, the present invention also provides a circuit breaker, comprising a circuit breaker mechanism body and any of the above-described electromagnet fixing structures for the circuit breaker, wherein at least three electromagnets are pre-installed in the circuit breaker mechanism body, the three electromagnets being an undervoltage electromagnet, a shunt electromagnet, and a closing electromagnet, and an intermediate fixing column located between the three electromagnets is provided on the circuit breaker mechanism body. The pressure plate is fixedly connected to the intermediate fixing column of the circuit breaker mechanism body via a fixed mounting portion, and the elastic pressure cantilevers independently exert a pressing and fixing effect on each electromagnet.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the electromagnet fixing structure and circuit breaker disclosed in the present invention, a plurality of elastic pressure-relieving cantilever arms are provided on the intermediate body of the pressure plate. When pressed against and engaged by corresponding electromagnets pre-installed on the circuit breaker mechanism, each elastic pressure-relieving cantilever arm independently deforms under force, thereby producing an elastic pressure-releasing action and firmly pressing and securing the corresponding electromagnet to the circuit breaker mechanism. This eliminates the problem of the electromagnet being unable to be firmly pressed and secured by the pressure plate due to factors such as slight height differences between the electromagnets or uneven surfaces of the pressure plate and the mechanism, causing the electromagnet to become loose during operation and affecting the reliability of the electromagnet's driving of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present utility model.

[0018] Figure 2It is a schematic diagram of the assembly structure of an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the exploded state of the assembly structure of an embodiment of the present utility model.

[0020] Description of labels:

[0021] 1. Pressure plate, 2. Circuit breaker mechanism body, 3. Electromagnet, 11. Intermediate body, 12. Elastic pressure cantilever, 13. Interval slots, 14. Interval support portion, 21. Intermediate fixing column, 111. Fixed mounting portion, 121. Boss. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] Please refer to the attached Figure 1 To the attached Figure 3 An embodiment of the present invention provides an electromagnet fixing structure for a circuit breaker, including a pressure plate 1. The pressure plate 1 includes an intermediate body 11, a fixing mounting portion 111 is provided on the intermediate body 11, and a plurality of elastic pressure cantilever arms 12 are formed along the side of the intermediate body 11. The elastic pressure cantilever arms 12 are independent of each other and can be elastically deformed relative to the intermediate body 11 when subjected to force. Each elastic pressure cantilever arm 12 is configured such that when the pressure plate 1 is assembled with the circuit breaker mechanism body 2 through the fixing mounting portion 111, each elastic pressure cantilever arm 12 independently and mutually exerts an elastic pressure and fixing effect on the top surface of each electromagnet 3 pre-installed on the circuit breaker mechanism body 2. It will be appreciated that in this embodiment, by providing a plurality of elastically pressing cantilever arms 12 on the intermediate body 11 of the pressure plate 1, each elastically pressing cantilever arm 12 can independently be elastically deformed when pressed against a corresponding electromagnet 3 pre-installed on the circuit breaker mechanism body 2, thereby producing an elastically pressing and securing action and pressing and securing the corresponding electromagnet 3 to the circuit breaker mechanism body 2. This eliminates the problem of the electromagnet 3 being unable to be pressed and secured by the pressure plate due to factors such as slight height differences between the electromagnets 3 or uneven surfaces of the pressure plate and the mechanism, causing the electromagnet to become loose during operation and affecting the reliability of the electromagnet's driving of the mechanism.

[0025] Please refer to the attached Figure 1 To the attached Figure 3 In one preferred embodiment, the fixing portion 111 is a screw hole structure formed on the intermediate body 11, and the pressure plate 1 is configured to be fastened to the intermediate fixing column 21 of the circuit breaker mechanism body 2 by screws passing through the screw hole structure. However, those skilled in the art will appreciate that in other embodiments, the pressure plate 1 may be secured to the intermediate fixing column 21 of the circuit breaker mechanism body 2 via other conventional fixing structures, such as a snap-fit ​​connection, and is not limited to the specific implementation disclosed in this embodiment.

[0026] Please refer to the attached Figure 1 In one preferred embodiment, each elastic pressing cantilever 12 is provided with a boss 121 for pressing against the electromagnet 3. When the boss 121 contacts the top surface of the electromagnet 3, a certain gap is reserved between the intermediate body 11 and the intermediate fixing column 21 of the circuit breaker mechanism body 2, so that when the screws are further tightened to lock the intermediate body 11 and the intermediate fixing column 21, each elastic pressing cantilever 12 can correspondingly produce elastic bending deformation and produce an elastic pressing and fixing effect on the electromagnet 3. In this embodiment, by providing the boss 121 on the elastic pressing cantilever 12, the boss 121 directly presses against the electromagnet 3. Since the contact area between the boss 121 and the end surface of the electromagnet 3 is relatively small, this can effectively reduce the problem of unstable contact between the elastic pressing cantilever 12 and the end surface of the electromagnet 3 caused by the flatness of the end surface of the electromagnet 3.

[0027] Please refer to the attached Figure 1 In one preferred embodiment, four elastic pressure-releasing cantilever arms 12 extend from the intermediate body 11, with slots 13 formed between adjacent elastic pressure-releasing cantilever arms 12 to enable each elastic pressure-releasing cantilever arm 12 to independently deform elastically when subjected to force. However, those skilled in the art will appreciate that in other embodiments, a corresponding number of elastic pressure-releasing cantilever arms 12 may be provided on the intermediate body 11 based on the number of electromagnets 3 pre-installed on the circuit breaker mechanism body 2, and the present invention is not limited to the specific implementation disclosed in this embodiment.

[0028] Please refer to the attached Figure 1 To the attached Figure 3 In one preferred embodiment, intermediate body 11 is provided with a spacing support portion 14 that matches the spacing between two electromagnets 3 spaced apart in circuit breaker mechanism body 2. Spacing support portion 14 is positioned corresponding to the spacing slot 13 between adjacent elastically pressing cantilever arms 12. In this embodiment, spacing support portion 14 effectively provides spacing support and stability for adjacent electromagnets 3 pre-installed in the circuit breaker mechanism body 2, further enhancing the secure assembly of electromagnets 3 on circuit breaker mechanism body 2.

[0029] Please refer to the attached Figure 1 In one preferred embodiment, the pressing plate 1 is an integrally formed structure. The spacing support portion 14 is formed by bending the remaining material of the spacing slots 13 between the adjacent elastic pressing cantilevers 12.

[0030] Please refer to the attached Figure 1 In one preferred embodiment, the pressure plate 1 is integrally formed from a metal sheet with elastic deformation properties. In this embodiment, preferably, the metal sheet is a stainless steel metal sheet or an aluminum alloy metal sheet. However, those skilled in the art should understand that in other embodiments, the metal sheet may also be other metal materials with the same or similar properties as stainless steel, and is not limited to the specific implementation methods disclosed in this embodiment. As long as the elastic pressure cantilever arms 12 formed on the intermediate body 11 can independently exert an elastic pressure and fixation effect on the corresponding electromagnet 3, it will be sufficient.

[0031] Please refer to the attached Figure 1 To the attached Figure 3 An embodiment of the present invention further provides a circuit breaker, including a circuit breaker mechanism body 2 and an electromagnet fixing structure for a circuit breaker according to any of the above embodiments, wherein at least three electromagnets 3 are pre-installed on the circuit breaker mechanism body 2, and the three electromagnets 3 are respectively an undervoltage electromagnet, a shunt electromagnet, and a closing electromagnet. The circuit breaker mechanism body 2 is provided with an intermediate fixing column 21 located between the three electromagnets 3. The pressure plate 1 is fixedly connected to the intermediate fixing column 21 of the circuit breaker mechanism body 2 via a fixed mounting portion 111, and each elastic pressure cantilever 12 independently and separately exerts a pressing and fixing effect on each electromagnet 3.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.

Claims

1. An electromagnet fixing structure for a circuit breaker, characterized in that: The invention comprises a pressure plate (1), wherein the pressure plate (1) comprises an intermediate body (11), a fixed installation portion (111) is provided on the intermediate body (11), and the intermediate body (11) is formed with a plurality of elastic pressure cantilever arms (12) along the side direction, which are independent of each other and can produce elastic deformation relative to the intermediate body (11) after being subjected to force. Each elastic pressure cantilever arm (12) is configured such that when the pressure plate (1) is assembled in place with the circuit breaker mechanism body (2) through the fixed installation portion (111), each elastic pressure cantilever arm (12) independently produces an elastic pressing and fixing effect on the top surface of each electromagnet (3) pre-installed on the circuit breaker mechanism body (2).

2. The electromagnet fixing structure for a circuit breaker according to claim 1, wherein: The fixing and mounting portion (111) is a screw hole structure provided on the middle body (11), and the pressing plate (1) is configured to be fixed to the middle fixing column (21) of the circuit breaker mechanism body (2) by screws passing through the screw hole structure.

3. The electromagnet fixing structure for a circuit breaker according to claim 1, wherein: Each elastic pressing cantilever (12) is provided with a boss (121) for pressing the electromagnet (3).

4. The electromagnet fixing structure for a circuit breaker according to claim 1, wherein: Four elastic pressing cantilevers (12) are extended from the middle body (11), and spaced slots (13) are formed between adjacent elastic pressing cantilevers (12) so that each elastic pressing cantilevers (12) can generate elastic deformation independently of each other when subjected to force.

5. The electromagnet fixing structure for a circuit breaker according to claim 1, wherein: A spacing support portion (14) adapted to the spacing between two electromagnets (3) spaced apart on the circuit breaker mechanism body (2) is provided on the intermediate body (11), and the spacing support portion (14) is provided at a position corresponding to the spacing slot (13) between adjacent elastic pressing cantilevers (12).

6. The electromagnet fixing structure for a circuit breaker according to claim 5, characterized in that: The pressing plate (1) is an integrally formed structure.

7. The electromagnet fixing structure for a circuit breaker according to claim 6, characterized in that: The spacing support portion (14) is formed as a whole by bending the remaining material of the spacing slots (13) punched out between adjacent elastic pressing cantilevers (12).

8. The electromagnet fixing structure for a circuit breaker according to any one of claims 1 to 7, characterized in that: The pressing plate (1) is integrally formed from a metal plate having elastic deformation properties.

9. The electromagnet fixing structure for a circuit breaker according to claim 8, wherein: The metal plate is a stainless steel metal plate or an aluminum alloy metal plate.

10. A circuit breaker, characterized in that: The invention comprises a circuit breaker mechanism body (2) and an electromagnet fixing structure for a circuit breaker according to any one of claims 1 to 9, wherein at least three electromagnets (3) are pre-installed on the circuit breaker mechanism body (2), and the three electromagnets (3) are respectively an undervoltage electromagnet, a shunt electromagnet and a closing electromagnet; a middle fixing column (21) located between the three electromagnets (3) is provided on the circuit breaker mechanism body (2); a pressure plate (1) is fixedly connected to the middle fixing column (21) of the circuit breaker mechanism body (2) through a fixed mounting portion (111); and each elastic pressure cantilever (12) independently exerts a pressing and fixing effect on each electromagnet (3).

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