Mutual inductor module and circuit breaker

Abstract

The utility model relates to the technical field of electrical devices, in particular to a mutual inductor module and a circuit breaker. The mutual inductor module can be used for a circuit breaker. The mutual inductor module comprises a first shell and a mutual inductor assembly, and the mutual inductor assembly is arranged in the first shell; the mutual inductor assembly comprises an insulating fixing seat, a mutual inductor and a first current-carrying piece, the insulating fixing seat is provided with a first assembling groove, and the first current-carrying piece is in plug-in fit with the first assembling groove; the first current-carrying piece and the insulating fixed seat are arranged in an inner hole of the mutual inductor in a penetrating manner; the groove bottom of the first assembling groove is provided with a first convex rib, the first current-carrying member is supported by the first convex rib, and the first convex rib is used for increasing the creepage distance. According to the mutual inductor module, the creepage distance can be increased through the first convex ribs arranged at the groove bottom of the first assembly groove, so that the reliable dielectric property is improved, and the safety of the mutual inductor module and the whole circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical devices, and in particular to a mutual inductor module and a circuit breaker. Background Art

[0002] The circuit breaker in the related art includes a circuit breaker module and a mutual inductor module and a leakage current module assembled on the circuit breaker module.

[0003] The inventors have discovered through research that the dielectric performance of the mutual inductor module in the circuit breaker of the related art is unreliable and its safety needs to be improved. Utility Model Content

[0004] The purpose of the present utility model includes providing a transformer module and a circuit breaker, wherein the transformer module can increase the creepage distance by providing a first rib at the bottom of the first assembly groove, so as to improve the reliable dielectric performance and enhance the safety of the transformer module and the entire circuit breaker.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the present invention provides a mutual inductor module, comprising:

[0007] a first shell;

[0008] The mutual inductor assembly is arranged in the first housing; wherein,

[0009] The transformer assembly includes an insulating fixing seat, a transformer and a first current-carrying member. The insulating fixing seat is provided with a first assembly groove. The first current-carrying member is plugged into and matched with the first assembly groove. The first current-carrying member and the insulating fixing seat are both inserted into the inner hole of the transformer.

[0010] A first rib is provided at the bottom of the first assembly groove, the first current-carrying component is supported by the first rib, and the first rib is used to increase the creepage distance.

[0011] In an optional embodiment, the insulating fixing seat includes a fixing seat and a second rib connected to the fixing seat, the fixing seat is provided with a first assembly groove and a second assembly groove, and the mutual inductor assembly further includes a second current-carrying member; wherein,

[0012] The first current-carrying part includes a first current-carrying body and a first conductive plate connected to the first current-carrying body; the second current-carrying part includes a second current-carrying body and a second conductive plate connected to the second current-carrying body; the first current-carrying body is plugged into and matched with the first assembly groove and supported by the first rib, the second current-carrying body is plugged into and matched with the second assembly groove, the first conductive plate and the second conductive plate are both used to electrically connect to the air switch module, and the second rib is isolated between the first conductive plate and the second conductive plate.

[0013] In an optional embodiment, the fixing seat is further provided with a third assembly groove, and the first assembly groove and the third assembly groove are relatively distributed and respectively located on both sides of the second assembly groove;

[0014] The mutual inductor assembly also includes a third current-carrying part, which includes a third current-carrying body and a third conductive plate connected to the third current-carrying body. The third current-carrying body is plugged into the third assembly slot, and the third conductive plate is used to be electrically connected to the circuit breaker module.

[0015] The insulating fixing seat includes two second convex ribs, one of which is isolated between the first conductive plate and the second conductive plate, and the other is isolated between the second conductive plate and the third conductive plate.

[0016] In an optional embodiment, the first conductive plate and the first current-carrying body are integrally formed; and / or,

[0017] The second conductive plate and the second current-carrying body are integrally formed; and / or,

[0018] The third conductive plate and the third current-carrying body are integrally formed; and / or,

[0019] A third rib is provided at the bottom of the third assembly groove, the third current-carrying body is supported by the third rib, and the third rib is used to increase the creepage distance.

[0020] In an optional embodiment, the second current-carrying body includes a first current-carrying plate and a second current-carrying plate, the second conductive plate, the first current-carrying plate, and the second current-carrying plate are sequentially connected at an angle, and the second conductive plate and the second current-carrying plate extend to opposite sides of the first current-carrying plate respectively; the second current-carrying plate is connected to a terminal assembled on the first housing;

[0021] The fixing seat is further provided with a fourth assembly groove, the second conductive plate is plugged into and matched with the fourth assembly groove, and the first current-carrying plate is plugged into and matched with the second assembly groove.

[0022] In an optional embodiment, along the axial direction of the inner hole of the mutual inductor, the height H1 of the second rib is greater than 3 mm; and / or,

[0023] The second rib protrudes relative to the bottom of the fourth assembly groove along a direction perpendicular to the bottom of the fourth assembly groove, and a height H2 of the second rib protruding relative to the bottom of the fourth assembly groove is greater than 3 mm.

[0024] In an optional embodiment, the fixing seat includes a reinforcement portion, a first assembly portion, and a second assembly portion; the reinforcement portion includes a first reinforcement plate, a second reinforcement plate, and a third reinforcement plate connected in sequence at an angle, and the first reinforcement plate and the third reinforcement plate are distributed on the same side of the second reinforcement plate;

[0025] The first assembly portion and the second assembly portion are relatively distributed on both sides of the reinforcement portion, and the first assembly portion and the second assembly portion are both connected to at least one of the first reinforcement plate, the second reinforcement plate and the third reinforcement plate;

[0026] The first assembly portion is provided with a first assembly groove, the second assembly portion is provided with a third assembly groove, a fourth assembly groove is formed between the first assembly portion, the first reinforcement plate and the second assembly portion, and a second assembly groove is formed between the first assembly portion, the second reinforcement plate and the second assembly portion.

[0027] In an optional embodiment, an end of the fixing seat away from the second rib is plug-fitted with the first shell.

[0028] In an optional embodiment, the first current-carrying body includes a third current-carrying plate, a fourth current-carrying plate, and a fifth current-carrying plate connected in sequence at an angle, the first conductive plate is connected to the third current-carrying plate at an angle, the third current-carrying plate and the fifth current-carrying plate are distributed on the same side of the fourth current-carrying plate, and the fourth current-carrying plate is plugged into the first assembly groove and supported by the first rib; wherein,

[0029] The third current-carrying plate, the fourth current-carrying plate and the fifth current-carrying plate form an accommodation space for the mutual inductor, and the distance between the third current-carrying plate and the fifth current-carrying plate is greater than 9 mm.

[0030] In an optional embodiment, the insulating fixing seat also includes a limiting member connected to the fixing seat, one end of the first current-carrying body is connected to the first conductive plate, and the other end is connected to the wiring terminal assembled on the first shell, and the end of the first current-carrying body close to the first conductive plate abuts against the side of the limiting member facing the first assembly groove.

[0031] In a second aspect, the utility model provides a circuit breaker, comprising a circuit breaker module and a transformer module according to any one of the aforementioned embodiments; the circuit breaker module comprises a second shell and a conductive connecting piece assembled on the second shell, the first shell is connected to the second shell, and the first current-carrying component is connected to the conductive connecting piece.

[0032] In an optional embodiment, one of the second shell and the first shell is provided with a positioning groove, and the other of the second shell and the first shell is connected with a plug-in component, which is plugged into the positioning groove.

[0033] In an optional embodiment, the air-open module further includes a rivet, one of the second shell and the first shell is provided with a plurality of positioning grooves, the other of the second shell and the first shell is connected with a plurality of plug-in connectors, and the plurality of plug-in connectors are plugged into the plurality of positioning grooves one-to-one; wherein, at least one plug-in connector is provided with a first plug-in groove, and at least another plug-in connector is provided with a second plug-in groove, the orientation of the slot of the first plug-in groove is distributed at an angle to the orientation of the slot of the second plug-in groove, the rivet is detachably plugged into the second shell, and is detachably plugged into the first plug-in groove and the second plug-in groove at the same time.

[0034] The beneficial effects of the mutual inductor module provided by the embodiment of the present invention include: the mutual inductor module provided by the embodiment of the present invention includes a first shell and a mutual inductor assembly arranged in the first shell; wherein, the mutual inductor assembly includes an insulating fixing seat, a mutual inductor and a first current-carrying part, the insulating fixing seat is provided with a first assembly groove, and the first current-carrying part is plugged into the first assembly groove; the first current-carrying part and the insulating fixing seat are both passed through the inner hole of the mutual inductor; the bottom of the first assembly groove is provided with a first rib, and the first current-carrying part is supported by the first rib; using the first rib to support the first current-carrying part, it is possible to increase the shortest distance from the live part to the grounded part or increase the shortest distance between different live parts along the surface of the insulating fixing seat and the first rib, that is, increase the creepage distance, improve the insulation strength, improve the problems of electrical faults and short circuits, and improve safety.

[0035] The circuit breaker provided by the embodiment of the present utility model includes all the beneficial effects of the aforementioned mutual inductor module. For example, the first rib is used to support the first current-carrying component, which can increase the shortest distance from the live component to the grounded component along the surface of the insulating fixing seat and the first rib, or increase the shortest distance between different live components. In other words, the creepage distance is increased, the insulation strength is improved, the problems of electrical faults and short circuits are improved, and the safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a structural diagram of a circuit breaker in an embodiment of the present utility model;

[0038] Figure 2 This is a schematic diagram of the partial structure of a circuit breaker in an embodiment of the present utility model;

[0039] Figure 3 This is a structural diagram of a mutual inductor assembly in an embodiment of the present utility model;

[0040] Figure 4 This is an exploded schematic diagram of a mutual inductor assembly in an embodiment of the present utility model;

[0041] Figure 5 Schematic diagram of the structure of the local structure of the mutual inductor assembly in the embodiment of the present utility model at a first viewing angle;

[0042] Figure 6This is a structural diagram of the insulating fixing seat in the embodiment of the utility model;

[0043] Figure 7 Schematic diagram of the structure of the partial structure of the mutual inductor assembly in the embodiment of the present utility model at a second viewing angle;

[0044] Figure 8 for Figure 2 Enlarged view of position VIII in the middle;

[0045] Figure 9 This is a schematic diagram of the exploded structure of the circuit breaker in the embodiment of the present utility model;

[0046] Figure 10 This is a structural diagram of the mutual inductor module in an embodiment of the present utility model.

[0047] Icons: 010-circuit breaker; 100-air switch module; 110-second housing; 111-positioning slot; 120-conductive connecting piece; 130-rivet; 200-transformer module; 210-first housing; 211-connector; 2111-first plug-in slot; 2112-second plug-in slot; 212-plug-in rib; 220-transformer assembly; 230-insulating fixing seat; 231-first assembly slot; 2311-slot; 2312-opening; 232-second assembly slot; 233-third assembly slot; 234-fourth assembly slot; 240-transformer; 250-first current-carrying part; 251-first conductive plate; 252-first current-carrying body; 253-third current-carrying plate; 254-fourth current-carrying Current plate; 255-fifth current-carrying plate; 256-sixth current-carrying plate; 260-second current-carrying member; 261-second conductive plate; 262-second current-carrying body; 263-first current-carrying plate; 264-second current-carrying plate; 270-third current-carrying member; 271-third conductive plate; 272-third current-carrying body; 281-first rib; 2811-inclined surface; 282-second rib; 290-fixing seat; 291-reinforcement portion; 2911-first reinforcing plate; 2912-second reinforcing plate; 2913-third reinforcing plate; 292-first assembly portion; 293-second assembly portion; 294-limiting member; 300-leakage module; a-first direction; b-second direction; c-third direction; d-fourth direction. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0051] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0052] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0053] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0054] Please refer to Figure 1 The present invention provides a circuit breaker 010, which includes a circuit breaker module 100, a transformer module 200, and a leakage current module 300. The transformer module 200 and the leakage current module 300 are both assembled on the circuit breaker module 100. The electrical connection relationship between the circuit breaker module 100, the transformer module 200, and the leakage current module 300 is similar to that in the related art and will not be repeated here.

[0055] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5The transformer module 200 of this embodiment includes a first shell 210 and a transformer assembly 220 arranged in the first shell 210, wherein the transformer assembly 220 includes an insulating fixing seat 230, a transformer 240 and a first current-carrying member 250, the insulating fixing seat 230 is provided with a first assembly groove 231, and the first current-carrying member 250 is plugged into the first assembly groove 231; the first current-carrying member 250 and the insulating fixing seat 230 are both inserted into the inner hole of the transformer 240; the bottom of the first assembly groove 231 is provided with a first rib 281, the first current-carrying member 250 is supported by the first rib 281, and the first rib 281 is used to increase the creepage distance. By supporting the first current-carrying member 250 with the first rib 281, the shortest distance from the live component to the grounded component or the shortest distance between different live components can be increased along the surface of the insulating fixing seat 230 and the first rib 281, that is, the creepage distance is increased, the insulation strength is improved, the problems of electrical faults and short circuits are improved, and safety is improved.

[0056] The number of the first ribs 281 can be selected as needed. In this embodiment, two first ribs 281 are connected to the bottom of the first assembly groove 231. The two first ribs 281 are spaced apart to form a groove at the bottom of the first assembly groove 231. Of course, in other embodiments, the number of the first ribs 281 can be increased or decreased as needed.

[0057] It should be noted that, by providing the first rib 281 , surface and line contact can be formed between the first current-carrying member 250 and the first rib 281 , thereby ensuring that heat can be quickly dissipated and improving heat dissipation performance.

[0058] The number of current-carrying components of the transformer module 200 can be selected as needed; this embodiment specifically includes three current-carrying components; of course, in other embodiments, the number of current-carrying components can be increased or decreased as needed, for example: one, two, four, etc., which is not specifically limited here.

[0059] Please refer to Figure 4 and Figure 5Furthermore, the transformer assembly 220 also includes a second current-carrying part 260, the insulating fixing seat 230 includes a fixing seat 290 and a second rib 282 connected to the fixing seat 290, and the fixing seat 290 is provided with a first assembly groove 231 and a second assembly groove 232; wherein, the first current-carrying part 250 includes a first current-carrying body 252 and a first conductive plate 251 connected to the first current-carrying body 252; the second current-carrying part 260 includes a second current-carrying body 262 and a second conductive plate 261 connected to the second current-carrying body 262; the first current-carrying body 252 is plugged into and matched with the first assembly groove 231 and supported by the first rib 281, the second current-carrying body 262 is plugged into and matched with the second assembly groove 232, the first conductive plate 251 and the second conductive plate 261 are both used to electrically connect to the air switch module 100, and the second rib 282 is isolated between the first conductive plate 251 and the second conductive plate 261. In this way, the second rib 282 is used to insulate and isolate the first conductive plate 251 and the second conductive plate 261 , thereby effectively protecting the dielectric performance between the first current-carrying member 250 and the second current-carrying member 260 .

[0060] Furthermore, the transformer assembly 220 also includes a third current-carrying part 270, and the fixing seat 290 is also provided with a third assembly groove 233. The first assembly groove 231 and the third assembly groove 233 are relatively distributed and are respectively located on both sides of the second assembly groove 232; the third current-carrying part 270 includes a third current-carrying body 272 and a third conductive plate 271 connected to the third current-carrying body 272. The third current-carrying body 272 is plugged into the third assembly groove 233, and the third conductive plate 271 is used to be electrically connected to the air switch module 100; the insulating fixing seat 230 includes two second ribs 282, one of which is isolated between the first conductive plate 251 and the second conductive plate 261, and the other is isolated between the second conductive plate 261 and the third conductive plate 271. Such a configuration can ensure that any two of the first conductive plate 251 , the second conductive plate 261 and the third conductive plate 271 can be insulated and isolated, thereby providing good protection for the dielectric properties between the first current-carrying member 250 , the second current-carrying member 260 and the third current-carrying member 270 .

[0061] For example, in other embodiments, the mutual inductor assembly 220 includes two current-carrying parts, which may refer to a first current-carrying part 250 and a second current-carrying part 260 , or may refer to a first current-carrying part 250 and a third current-carrying part 270 , which is not specifically limited herein.

[0062] In order to reduce the number of solder joints on the current-carrying component itself, the current-carrying component may be configured as an integrally formed structure, for example, an integrally stamped plate-shaped structure.

[0063] To further increase creepage distance and enhance reliable dielectric performance, a third rib is provided at the bottom of the third mounting groove 233. The third current-carrying body 272 is supported by the third rib and serves to increase creepage distance. The number of third ribs and other details can be found in the first rib 281 and are not further described here.

[0064] Of course, the third rib is not a necessary component, and in other embodiments, the third rib may not be provided.

[0065] Please refer to Figure 4 In this embodiment, the first current-carrying element 250, the second current-carrying element 260, and the third current-carrying element 270 are all integrally formed. Specifically, the first conductive plate 251 is integrally formed with the first current-carrying body 252; the second conductive plate 261 is integrally formed with the second current-carrying body 262; and the third conductive plate 271 is integrally formed with the third current-carrying body 272. The first, second, and third current-carrying elements 250, 260, and 270 are all solder-free, simplifying the production process and improving the reliability of the conductive connections. This also reduces internal resistance and lowers temperature rise, enhancing performance stability and ease of installation.

[0066] Of course, in other embodiments, only one or two of the first current-carrying component 250 , the second current-carrying component 260 and the third current-carrying component 270 may be integrally formed.

[0067] Please refer to Figure 4 and Figure 5 In this embodiment, the second current-carrying body 262 of the second current-carrying member 260 includes a first current-carrying plate 263 and a second current-carrying plate 264. The second conductive plate 261, the first current-carrying plate 263, and the second current-carrying plate 264 are connected in sequence at an angle, and the second conductive plate 261 and the second current-carrying plate 264 extend to opposite sides of the first current-carrying plate 263, respectively, so that the second current-carrying member 260 is roughly "Z"-shaped, which is conducive to simplifying the production and processing of the second current-carrying member 260; the second current-carrying plate 264 is connected to the wiring terminal assembled on the first shell 210; the fixing seat 290 is further provided with a fourth assembly groove 234, the fourth assembly groove 234 is connected to the second assembly groove 232, the second conductive plate 261 is plugged into and matched with the fourth assembly groove 234, and the first current-carrying plate 263 is plugged into and matched with the second assembly groove 232. With this arrangement, the second conductive plate 261 can be wrapped in the two second ribs 282 and the fourth assembly groove 234, and the first current-carrying plate 263 can be wrapped in the second assembly groove 232, so as to improve the insulation isolation effect and ensure the insulation isolation between the various current-carrying components.

[0068] Optionally, the included angle between the second conductive plate 261 and the first current-carrying plate 263 , and the included angle between the first current-carrying plate 263 and the second current-carrying plate 264 may be 90°, 88°, 93°, etc., which are not specifically limited here.

[0069] Alternatively, see Figure 6 Along the axial direction of the inner hole of the mutual inductor 240, the height H1 of the second rib 282 is greater than 3 mm, and may be, for example, 3.05 mm, 3.1 mm, 3.2 mm, or 4 mm. In a direction perpendicular to the bottom of the fourth mounting groove 234, the second rib 282 protrudes relative to the bottom of the fourth mounting groove 234, and the height H2 of the second rib 282 protruding relative to the bottom of the fourth mounting groove 234 is greater than 3 mm, and may be, for example, 3.05 mm, 3.1 mm, 3.2 mm, or 4 mm. This configuration ensures reliable insulation isolation between the first conductive plate 251, the second conductive plate 261, and the third conductive plate 271, thereby enhancing dielectric protection.

[0070] Of course, in other embodiments, as long as one of the second ribs 282 can be isolated between the first conductive plate 251 and the second conductive plate 261, and the other second rib 282 can be isolated between the second conductive plate 261 and the third conductive plate 271, the height H1 of the second rib 282 along the axial direction of the inner hole of the mutual inductor 240 can also be less than or equal to 3 mm, for example: 3 mm, 2.9 mm, 2.8 mm, etc.; or, along the direction perpendicular to the bottom of the fourth assembly groove 234, the second rib 282 protrudes relative to the bottom of the fourth assembly groove 234, and the height H2 of the second rib 282 protruding compared to the bottom of the fourth assembly groove 234 can also be less than or equal to 3 mm, for example: 3 mm, 2.9 mm, 2.8 mm, etc.

[0071] The structure of the fixing seat 290 can be set as needed; please refer to Figure 6 and Figure 7In this embodiment, the fixing seat 290 includes a reinforcing portion 291, a first assembly portion 292 and a second assembly portion 293. The reinforcing portion 291 includes a first reinforcing plate 2911, a second reinforcing plate 2912 and a third reinforcing plate 2913 connected in sequence at an angle. The first reinforcing plate 2911 and the third reinforcing plate 2913 are distributed on the same side of the second reinforcing plate 2912, so that the reinforcing portion 291 is roughly in the shape of a "concave" character; the first assembly portion 292 and the second assembly portion 293 are relatively distributed on both sides of the reinforcing portion 291, and The first assembly portion 292 and the second assembly portion 293 are both connected to the first reinforcing plate 2911, the second reinforcing plate 2912, and the third reinforcing plate 2913. The first assembly portion 292 is provided with a first assembly slot 231, and the second assembly portion 293 is provided with a third assembly slot 233. A fourth assembly slot 234 is formed between the first assembly portion 292, the first reinforcing plate 2911, and the second assembly portion 293, and a second assembly slot 232 is formed between the first assembly portion 292, the second reinforcing plate 2912, and the second assembly portion 293. This arrangement allows the first reinforcing plate 2911, the second reinforcing plate 2912, and the third reinforcing plate 2913 of the reinforcing portion 291 to increase the structural strength of the insulating holder 230, thereby preventing deformation of the insulating holder 230 and thereby improving the problem of reduced insulation isolation due to deformation of the insulating holder 230.

[0072] It should be understood that in other embodiments, one of the first assembly part 292 and the second assembly part 293 can also be connected only to one or two of the first reinforcing plate 2911, the second reinforcing plate 2912 and the third reinforcing plate 2913, which is not specifically limited here.

[0073] Furthermore, the two second ribs 282 are connected to the first assembly portion 292 and the second assembly portion 293, respectively. The second ribs 282 are located near the air switch module 100. The end of the fixing base 290 away from the second ribs 282 is plugged into the first housing 210. This arrangement can improve the stability of the insulating fixing base 230 when assembled with the first housing 210.

[0074] Alternatively, see Figure 6 and Figure 8 The groove wall of the first assembly groove 231 and the groove wall of the third assembly groove 233 are both provided with a slot 2311, and the inner wall of the first shell 210 is connected with a plug-in rib 212, which is plugged into and matched with the slot 2311.

[0075] Of course, in other embodiments, the groove walls of the first assembly groove 231 and the groove walls of the third assembly groove 233 are both connected with the plug-in ribs 212 , and the inner wall of the first shell 210 is provided with a slot 2311 , and the plug-in ribs 212 are plugged into the slot 2311 .

[0076] In this embodiment, the first current-carrying element 250 may be a current-carrying element for phase A, the second current-carrying element 260 may be a current-carrying element for phase B, and the third current-carrying element 270 may be a current-carrying element for phase C. The structures of the current-carrying element for phase A and the current-carrying element for phase C are similar, and the following description will take the current-carrying element for phase A as an example.

[0077] Please refer to Figure 4 The first current-carrying body 252 of the first current-carrying member 250 includes a third current-carrying plate 253, a fourth current-carrying plate 254, and a fifth current-carrying plate 255 connected in sequence at an angle. The first conductive plate 251 is connected to the third current-carrying plate 253 at an angle, and the first conductive plate 251 and the fourth current-carrying plate 254 are respectively located on opposite sides of the third current-carrying plate 253, and the third current-carrying plate 253 and the fifth current-carrying plate 255 are distributed on the same side of the fourth current-carrying plate 254, so that the first current-carrying member 250 is connected to the third current-carrying plate 253 at an angle. The flow body 252 is generally U-shaped. The fourth current-carrying plate 254 engages with the first mounting groove 231 and is supported by the first rib 281. The third, fourth, and fifth current-carrying plates 253, 254, and 255 define a space for accommodating the transformer 240. The spacing H3 between the third and fifth current-carrying plates 253, 255 is greater than 9 mm, for example, 9.01 mm, 9.1 mm, 9.4 mm, or 9.5 mm. This arrangement ensures that the transformer 240 is assembled within a larger space, providing ample heat dissipation for the transformer 240 and reducing adverse effects on the transformer 240.

[0078] Furthermore, the first current-carrying body 252 also includes a sixth current-carrying plate 256 connected to the fifth current-carrying plate 255 at an angle, and the sixth current-carrying plate 256 and the fourth current-carrying plate 254 are respectively located on opposite sides of the fifth current-carrying plate 255, and the sixth current-carrying plate 256 is connected to the connection terminal assembled on the first shell 210.

[0079] The third current-carrying plate 253 , the fourth current-carrying plate 254 , the fifth current-carrying plate 255 and the sixth current-carrying plate 256 are integrally formed, for example, integrally stamped or integrally injection molded.

[0080] Further, please refer to Figure 6 and Figure 7The insulating fixing seat 230 also includes a limit member 294 connected to the fixing seat 290. Specifically, one end of the limit member 294 is connected to the first assembly portion 292, and the other end extends in a direction away from the second assembly portion 293, and the limit member 294 has a side facing the first assembly groove 231 and a side facing away from the first assembly groove 231; one end of the first current-carrying body 252 is connected to the first conductive plate 251, and the other end is connected to the wiring terminal assembled on the first shell 210, that is, the third current-carrying plate 253 is connected to the first conductive plate 251, and the sixth current-carrying plate 256 is connected to the wiring terminal assembled on the first shell 210. One end of the first current-carrying body 252 close to the first conductive plate 251 abuts against the side of the limit member 294 facing the first assembly groove 231. Specifically, the side of the third current-carrying plate 253 facing away from the accommodating space abuts against the side of the limit member 294 facing the first assembly groove 231. With such a configuration, a partial structure of the first current-carrying component 250 can be wrapped between the limiting component 294 and the first assembly portion 292 , thereby improving the insulation isolation effect.

[0081] Optionally, the angle between the first conductive plate 251 and the third current-carrying plate 253, the angle between the third current-carrying plate 253 and the fourth current-carrying plate 254, the angle between the fourth current-carrying plate 254 and the fifth current-carrying plate 255, and the angle between the fifth current-carrying plate 255 and the sixth current-carrying plate 256 can be set as needed, for example: 90°, 88°, 93°, etc., and are not specifically limited here.

[0082] It should be understood that the fixing seat 290 is also connected to another limiting member 294. Specifically, one end of the other limiting member 294 is connected to the second assembly portion 293, and the other end of the limiting member 294 extends in a direction away from the first assembly portion 292; the third current-carrying body 272 is connected to one end of the third conductive plate 271 and is abutted against the side of the limiting member 294 toward the third assembly groove 233.

[0083] Alternatively, see Figure 5 and Figure 6 An opening 2312 is provided at one end of the first assembly groove 231 away from the limiting member 294, the length extension direction of the first rib 281 is parallel to the direction of the limiting member 294 pointing to the opening 2312, and an inclined surface 2811 is provided at one end of the first rib 281 close to the opening 2312; when assembling the first current-carrying member 250, the inclined surface 2811 can be used to guide the first current-carrying body 252 of the first current-carrying member 250 to slide with the inclined surface 2811, so that the first current-carrying body 252 of the first current-carrying member 250 is inserted into the first assembly groove 231 from the opening 2312 and slides until the first current-carrying body 252 abuts against the limiting member 294, thereby completing the assembly of the first current-carrying member 250.

[0084] It should be noted that, when the first current-carrying member 250 is assembled, the first conductive plate 251 overlaps the end of the limiting member 294 to further improve the stability of the first current-carrying member 250 assembled on the insulating fixing seat 230 .

[0085] The structure of the third assembly groove 233 is similar to that of the first assembly groove 231 , and will not be described in detail herein.

[0086] Please refer to Figure 9 and Figure 10 The air switch module 100 of this embodiment includes a second shell 110 and a coil assembly arranged in the second shell 110, the coil assembly includes a conductive connecting piece 120, the first shell 210 is connected to the second shell 110, and the first current-carrying part 250 is connected to the conductive connecting piece 120.

[0087] The number of coil assemblies can be set as needed, for example, one, two, three, four, etc., and is not specifically limited here.

[0088] In this embodiment, the first current-carrying member 250, the second current-carrying member 260 and the third current-carrying member 270 respectively correspond to a coil assembly, and the first current-carrying member 250, the second current-carrying member 260 and the third current-carrying member 270 are respectively connected to the conductive connecting piece 120 of the corresponding coil assembly; specifically, the first conductive plate 251, the second conductive plate 261 and the third conductive plate 271 are respectively connected to the conductive connecting piece 120 of the corresponding coil assembly, wherein the conductive connecting piece 120 of the coil assembly connected to the second conductive plate 261 is located between the two second ribs 282.

[0089] It should be noted that the conductive connecting sheet 120 of the coil assembly can be a flat conductive sheet.

[0090] In order to facilitate the assembly between the transformer module 200 and the circuit breaker module 100 and enable automated assembly between the transformer module 200 and the circuit breaker module 100, the second shell 110 is provided with a positioning groove 111, and the first shell 210 is connected to a connector 211, which is plugged into the positioning groove 111.

[0091] Of course, in other embodiments, the first housing 210 is provided with a positioning groove 111 , the second housing 110 is connected with a plug-in component 211 , and the plug-in component 211 is plugged into the positioning groove 111 .

[0092] Furthermore, the air switch module 100 also includes a rivet 130, one of the second shell 110 and the first shell 210 is provided with a plurality of positioning grooves 111, the first shell 210 is connected to a plurality of connectors 211, and the plurality of connectors 211 are plugged into the plurality of positioning grooves 111 in a one-to-one correspondence; wherein, at least one connector 211 is provided with a first plug-in groove 2111, and at least another connector 211 is provided with a second plug-in groove 2112, and the direction of the slot of the first plug-in groove 2111 is distributed at an angle to the direction of the slot of the second plug-in groove 2112, and the rivet 130 is detachably plugged into the second shell 110, and is simultaneously detachably plugged into the first plug-in groove 2111 and the second plug-in groove 2112. The reliability of assembling the transformer module 200 to the circuit breaker module 100 can be improved by plugging and matching the first plugging slot 2111 and the second plugging slot 2112 with slots facing different directions with the rivet 130 .

[0093] Furthermore, the positioning slot 111 has two adjacent notches, one of which is oriented in a first direction a and the other in a second direction b. The first and second directions a and b form an angle, and the connector 211 can be inserted into the positioning slot 111 from either notch. The first insertion slot 2111 has a notch oriented in a third direction c, which is opposite to the first direction a. The second insertion slot 2112 has a notch oriented in a fourth direction d, which is opposite to the second direction b. This arrangement ensures that the connector 211 will not disengage from the positioning slot 111 when the rivet 130 is inserted, thereby ensuring the assembly stability between the transformer module 200 and the circuit breaker module 100.

[0094] The angle between the first direction a and the second direction b is 90°. Of course, in other embodiments, the angle between the first direction a and the second direction b can also be 88°, 95°, etc., which is not specifically limited here.

[0095] Optionally, the plurality of positioning grooves 111 may be distributed in N rows and M columns, where N and M are integers and are not specifically limited herein.

[0096] Optionally, the rivet 130 is also plugged into the leakage module 300 at the same time; in this way, the ease of assembly of the circuit breaker 010 can be further improved, and the investment in connecting parts can be reduced, which is conducive to reducing costs.

[0097] In summary, the transformer module 200 of the present invention can be used in the circuit breaker 010. The transformer module 200 can not only increase the creepage distance to improve the reliable dielectric performance and enhance the safety of the transformer module 200 and the entire circuit breaker 010, but also ensure the isolation between multiple current-carrying parts through the groove walls of each assembly groove of the insulating fixing seat 230 and the second rib 282, thereby reliably achieving insulation isolation and improving the risk of phase-to-phase short circuit.

[0098] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A mutual inductor module, characterized in that: include: a first housing (210); A mutual inductor assembly (220), the mutual inductor assembly (220) being disposed in the first housing (210); wherein, The mutual inductor assembly (220) comprises an insulating fixing seat (230), a mutual inductor (240), and a first current-carrying member (250); the insulating fixing seat (230) is provided with a first assembly groove (231); the first current-carrying member (250) is plugged into and matched with the first assembly groove (231); the first current-carrying member (250) and the insulating fixing seat (230) are both inserted into the inner hole of the mutual inductor (240); A first rib (281) is provided at the bottom of the first assembly groove (231), the first current-carrying component (250) is supported by the first rib (281), and the first rib (281) is used to increase the creepage distance.

2. The mutual inductor module according to claim 1, characterized in that: The insulating fixing seat (230) includes a fixing seat (290) and a second rib (282) connected to the fixing seat (290); the fixing seat (290) is provided with the first assembly groove (231) and the second assembly groove (232); the mutual inductor assembly (220) further includes a second current-carrying member (260); wherein, The first current-carrying part (250) includes a first current-carrying body (252) and a first conductive plate (251) connected to the first current-carrying body (252); the second current-carrying part (260) includes a second current-carrying body (262) and a second conductive plate (261) connected to the second current-carrying body (262); the first current-carrying body (252) is plugged into and matched with the first assembly groove (231) and supported by the first rib (281); the second current-carrying body (262) is plugged into and matched with the second assembly groove (232); the first conductive plate (251) and the second conductive plate (261) are both used for electrical connection to the open module (100), and the second rib (282) is isolated between the first conductive plate (251) and the second conductive plate (261).

3. The mutual inductor module according to claim 2, characterized in that: The fixing seat (290) is further provided with a third assembly groove (233), the first assembly groove (231) and the third assembly groove (233) are relatively distributed and are respectively located on both sides of the second assembly groove (232); the mutual inductor assembly (220) also includes a third current-carrying part (270), the third current-carrying part (270) includes a third current-carrying body (272) and a third conductive plate (271) connected to the third current-carrying body (272), and the third current-carrying body (272) is connected to the third current-carrying body (272). The third assembly groove (233) is plug-fitted, and the third conductive plate (271) is used to be electrically connected to the open module (100); the insulating fixing seat (230) includes two second convex ribs (282), one of which is isolated between the first conductive plate (251) and the second conductive plate (261), and the other second convex rib (282) is isolated between the second conductive plate (261) and the third conductive plate (271); and / or, Along the axial direction of the inner hole of the mutual inductor (240), the height H1 of the second rib (282) is greater than 3 mm.

4. The mutual inductor module according to claim 3, characterized in that: The first conductive plate (251) and the first current-carrying body (252) are integrally formed; and / or, The second conductive plate (261) and the second current-carrying body (262) are integrally formed; and / or, The third conductive plate (271) and the third current-carrying body (272) are integrally formed; and / or, The bottom of the third assembly groove (233) is provided with a third rib, the third current-carrying body (272) is supported by the third rib, and the third rib is used to increase the creepage distance.

5. The mutual inductor module according to claim 3, characterized in that: The second current-carrying body (262) includes a first current-carrying plate (263) and a second current-carrying plate (264); the second conductive plate (261), the first current-carrying plate (263), and the second current-carrying plate (264) are sequentially connected at an angle, and the second conductive plate (261) and the second current-carrying plate (264) extend to opposite sides of the first current-carrying plate (263); the second current-carrying plate (264) is connected to a terminal assembled on the first housing (210); The fixing seat (290) is further provided with a fourth assembly groove (234), the second conductive plate (261) is plugged into and matched with the fourth assembly groove (234), and the first current-carrying plate (263) is plugged into and matched with the second assembly groove (232).

6. The mutual inductor module according to claim 5, characterized in that: Along a direction perpendicular to the bottom of the fourth assembly groove (234), the second rib (282) protrudes relative to the bottom of the fourth assembly groove (234), and a height H2 of the second rib (282) protruding from the bottom of the fourth assembly groove (234) is greater than 3 mm.

7. The mutual inductor module according to claim 5, characterized in that: The fixing seat (290) includes a reinforcing portion (291), a first assembly portion (292), and a second assembly portion (293); the reinforcing portion (291) includes a first reinforcing plate (2911), a second reinforcing plate (2912), and a third reinforcing plate (2913) connected in sequence at an angle, and the first reinforcing plate (2911) and the third reinforcing plate (2913) are distributed on the same side of the second reinforcing plate (2912); The first assembly portion (292) and the second assembly portion (293) are relatively distributed on both sides of the reinforcement portion (291), and the first assembly portion (292) and the second assembly portion (293) are both connected to at least one of the first reinforcement plate (2911), the second reinforcement plate (2912), and the third reinforcement plate (2913); The first assembly portion (292) is provided with the first assembly groove (231), the second assembly portion (293) is provided with the third assembly groove (233), a fourth assembly groove (234) is formed between the first assembly portion (292), the first reinforcing plate (2911) and the second assembly portion (293), and a second assembly groove (232) is formed between the first assembly portion (292), the second reinforcing plate (2912) and the second assembly portion (293).

8. The mutual inductor module according to claim 2, characterized in that: One end of the fixing seat (290) away from the second rib (282) is plug-fitted to the first shell (210).

9. The mutual inductor module according to claim 2, characterized in that: The first current-carrying body (252) includes a third current-carrying plate (253), a fourth current-carrying plate (254), and a fifth current-carrying plate (255) connected in sequence at an angle, the first conductive plate (251) is connected to the third current-carrying plate (253) at an angle, the third current-carrying plate (253) and the fifth current-carrying plate (255) are distributed on the same side of the fourth current-carrying plate (254), the fourth current-carrying plate (254) is plugged into the first assembly groove (231), and is supported by the first rib (281); wherein, The third current-carrying plate (253), the fourth current-carrying plate (254) and the fifth current-carrying plate (255) form an accommodating space for the mutual inductor (240), and a spacing H3 between the third current-carrying plate (253) and the fifth current-carrying plate (255) is greater than 9 mm.

10. The mutual inductor module according to claim 2, characterized in that: The insulating fixing seat (230) further includes a limiting member (294) connected to the fixing seat (290); one end of the first current-carrying body (252) is connected to the first conductive plate (251), and the other end is connected to a terminal assembled on the first shell (210); an end of the first current-carrying body (252) close to the first conductive plate (251) abuts against a side of the limiting member (294) facing the first assembly groove (231).

11. A circuit breaker, characterized in that: It comprises an air switch module (100) and a mutual inductor module according to any one of claims 1 to 10; the air switch module (100) comprises a second shell (110) and a conductive connecting piece (120) assembled on the second shell (110), the first shell (210) is connected to the second shell (110), and the first current-carrying part (250) is connected to the conductive connecting piece (120).

12. The circuit breaker according to claim 11, wherein: One of the second shell (110) and the first shell (210) is provided with a positioning groove (111), and the other of the second shell (110) and the first shell (210) is connected with a plug-in component (211), and the plug-in component (211) is plugged into the positioning groove (111).

13. The circuit breaker according to claim 12, wherein: The air-opening module (100) further includes a rivet (130), one of the second shell (110) and the first shell (210) is provided with a plurality of the positioning grooves (111), the other of the second shell (110) and the first shell (210) is connected with a plurality of the plug-in connectors (211), and the plurality of the plug-in connectors (211) are plugged into the plurality of the positioning grooves (111) in a one-to-one correspondence; wherein at least one of the plug-in connectors ( 211) is provided with a first plug-in slot (2111), and at least another connector (211) is provided with a second plug-in slot (2112), the orientation of the slot of the first plug-in slot (2111) and the orientation of the slot of the second plug-in slot (2112) are distributed at an angle, and the rivet (130) is detachably plugged into the second shell (110), and is detachably plugged into the first plug-in slot (2111) and the second plug-in slot (2112) at the same time.

Images