Residual-current circuit breaker and electrical system
By adopting the U-shaped give way structure and isolation plate design in the leakage circuit breaker, the assembly process is simplified and the volume is reduced, solving the problems of complex structure and large volume in the prior art, and achieving more efficient assembly and insulation protection.
Patent Information
- Application Number
- CN202422409688.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
There are many structural parts during the assembly process of existing leakage circuit breakers, which leads to complex assembly and large volume, making it difficult to effectively reduce space occupation.
The U-shaped give way structure and isolation plate design are adopted, and the radial movement of the transformer detection through hole is carried out through the give way structure, which simplifies the assembly process of the conductive parts, and extends the creepage distance through the isolation plate and reduces the overall volume.
The simplified assembly process and reduced volume of leakage circuit breakers are realized, reducing production costs, and improving insulation effect.
Smart Images
Figure CN223140689U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of circuit breakers, and in particular to a leakage circuit breaker and an electrical system. Background Art
[0002] A leakage circuit breaker is a commonly used protective device in electrical systems. It can disconnect the circuit when faults such as leakage, short circuit and overload occur in the circuit system to protect electrical equipment.
[0003] In the prior art, the leakage circuit breaker has a large number of structural parts during the production and assembly process, resulting in a complicated assembly process and low assembly efficiency. In particular, for the assembly of the transformer and the conductive structure in the transformer, the leakage circuit breaker detects the current in the conductive structure by setting the transformer to determine the circuit working state. When in use, the conductive structure needs to be partially inserted into the detection hole of the transformer. During the specific assembly, the conductive structure needs to be connected to other components at both ends while being inserted.
[0004] However, when the above structure is assembled, the conductive structure is relatively complex to adapt to the connection structure with the two end structures, resulting in the assembly formed by the conductive structure and the transformer not only being cumbersome in the assembly process but also having a large volume after assembly, which in turn causes the overall space occupation of the leakage circuit breaker to be large. Utility Model Content
[0005] The purpose of the present application is to provide a residual current circuit breaker and an electrical system, wherein the residual current circuit breaker includes a device that can simplify the assembly process of the entire device and reduce the volume of the device after assembly.
[0006] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, an embodiment of the present application provides a leakage circuit breaker, which includes a housing, an assembly frame, a mutual inductor and a wiring module. A accommodating chamber is provided in the housing. The assembly frame is installed on the housing, the assembly frame is at least partially in the accommodating chamber, and the assembly frame is provided with an isolation plate. The mutual inductor is arranged in the accommodating chamber, the mutual inductor is arranged on one side of the assembly frame, a detection through hole is provided on the mutual inductor, and the isolation plate extends into the detection through hole. The wiring module includes at least two conductive parts, each conductive part is respectively provided with a wiring part and a conducting part at both ends, the conductive part is partially in the detection through hole, and the isolation plate is inserted between the parts of the two conductive parts in the detection through hole. Among them, at least one conductive part is bent to form a U-shaped yielding structure.
[0007] Based on the above-mentioned embodiments of the present application, when the leakage circuit breaker is assembled, in the assembly part of the mutual inductor and the wiring module, the axial direction of the detection through hole in the mutual inductor faces the assembly frame, and the mutual inductor is assembled in the accommodating cavity and fixed by means of clamping or the like. Subsequently, a conductive member provided with a giving way structure is firstly penetrated into the detection through hole along the axial direction of the detection through hole, and the setting of the giving way structure with a U-shaped bend can move radially along the detection through hole to give way after penetration, thereby leaving more space for the penetration of another conductive member. Subsequently, after the penetration and assembly of the two conductive members are completed, they are connected and conducted with other components in the circuit through the wiring part and the conduction part. At the same time, through the isolation plate provided on the assembly frame, the isolation plate can be inserted between the two conductive members in the detection through hole, thereby extending the creepage distance between the two conductive members and improving the insulation effect. Through the above-mentioned arrangement of the present application, on the one hand, the assembly of the transformer and the wiring module in the leakage circuit breaker is made more convenient, and on the other hand, the arrangement of the yielding structure makes the overall volume of the assembly structure composed of the conductive part and the transformer smaller, thereby making the overall volume of the leakage circuit breaker smaller, reducing space occupancy while reducing production and processing costs.
[0008] In some embodiments, one of the conductive parts has a yield structure, which includes a first bending section, a second bending section and a third bending section, and the second bending section is connected between the first bending section and the third bending section. The second bending section is located in the detection through hole, and the extension direction of the second bending section is consistent with the axial direction of the detection through hole.
[0009] Based on the above-mentioned embodiments of the present application, the first bending section, the second bending section and the third bending section cooperate to form a yielding structure with an approximately U-shaped structure. During assembly, the second bending section is located in the detection through hole, thereby achieving assembly and yielding.
[0010] In some embodiments, two ends of the yield structure are respectively connected to a first wiring portion and a first conductive portion, the first wiring portion is connected to the first bending section, and the first conductive portion is connected to the third bending section.
[0011] Based on the above-mentioned embodiments of the present application, the configuration of the first wiring portion and the first conducting portion enables the two ends of the yield structure to be connected and conducted with other structures, thereby achieving connection and conduction of the overall conductive circuit inside the leakage circuit breaker.
[0012] In some embodiments, the length of the second bent segment is greater than the thickness of the mutual inductor.
[0013] Based on the above embodiments of the present application, by setting the length of the second bending section to be larger than the thickness of the mutual inductor, the mutual inductor can be located in the making way structure when making way, thereby improving the assembly effect and reducing the overall space occupied by the assembly formed by the assembly.
[0014] In some embodiments, another conductive member includes a second wiring portion and a second conduction portion, and the second wiring portion is connected to the second conduction portion. Among them, a part of the second conduction portion is located in the detection through-hole, and the extending direction of the second conduction portion is consistent with the axial direction of the detection through-hole.
[0015] Based on the above embodiments of the present application, compared with the relief structure formed on one conductive member, a second conduction portion is directly provided on the other conductive member and inserted into the detection through-hole. After the relief structure is assembled and the relief is performed, the second conduction portion is directly inserted into the detection through-hole along the axial direction of the detection through-hole, making the assembly process simple and fast.
[0016] In some embodiments, the second bending section and the second conduction portion are oppositely arranged, and the direction in which the second bending section and the second conduction portion are opposite corresponds to the thickness direction of the two.
[0017] Based on the above embodiments of the present application, the second bending section is arranged as a long strip-shaped plate structure, and the second conduction portion is also arranged as a long strip-shaped plate structure. During assembly, the large surfaces of the second bending section and the second conduction portion are arranged facing each other, thereby reducing the space occupied in the detection through-hole after the two are assembled, facilitating assembly and reducing the overall volume after assembly.
[0018] In some embodiments, the isolation plate includes a first plate body and a second plate body. The first plate body is located between the second bending section and the second conduction portion, and the second plate body is connected to the first plate body and forms an L-shaped structure with the first plate body.
[0019] Based on the above embodiments of the present application, by setting the first plate body and the second plate body to form an L-shaped structure, the creepage distance between the second bending section and the second conduction portion is further extended, and thus the isolation effect of the isolation plate is further improved.
[0020] In some embodiments, the wiring module further includes two wiring members. Each wiring member includes a fixing sleeve and a wiring post. The fixing sleeve is fixed in the accommodation cavity, the wiring post penetrates through the housing and is connected to the fixing sleeve, and the first wiring portion and the second wiring portion are connected to the fixing sleeve.
[0021] Based on the above embodiments of the present application, the wiring member composed of the fixing sleeve and the wiring post is used to connect to the external circuit, and the first wiring portion and the second wiring portion are respectively connected to the fixing sleeve to realize connection and conduction with the external circuit.
[0022] In some embodiments, the leakage circuit breaker further includes a circuit board. The circuit board is arranged in the accommodation cavity and is perpendicular to the thickness direction of the housing, and the current transformer is electrically connected to the circuit board.
[0023] Based on the above embodiments of the present application, the circuit board is arranged for data processing and control in the leakage circuit breaker. By arranging the circuit board perpendicular to the thickness direction of the housing, the space occupied by the circuit board in the thickness direction of the leakage circuit breaker is reduced, thereby reducing the size of the leakage circuit breaker in the thickness direction, reducing the overall volume of the leakage circuit breaker, and reducing the space occupation.
[0024] According to a second aspect of the present application, there is provided an electrical system, which includes the above-mentioned leakage circuit breaker.
[0025] Based on the above embodiments of the present application, the electrical system provided by the present application includes the above-mentioned leakage circuit breaker, and can perform tripping protection when faults such as leakage occur in the circuit. Through the above structural arrangement, not only is the assembly and maintenance of the leakage circuit breaker more convenient, but also the overall volume of the leakage circuit breaker can be reduced, and the space occupation can be reduced.
[0026] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present application, but do not constitute a limitation to the present application. In the drawings:
[0028] Figure 1 is a schematic structural diagram of the leakage circuit breaker provided by an embodiment of the present application.
[0029] Figure 2 is a schematic internal plan view of the leakage circuit breaker provided by an embodiment of the present application.
[0030] Figure 3 is a schematic structural diagram of the current transformer and the wiring module in the leakage circuit breaker provided by an embodiment of the present application.
[0031] Figure 4 is a schematic structural diagram of the wiring module in the leakage circuit breaker provided by an embodiment of the present application.
[0032] Figure 5 is a schematic structural diagram of the conductive part in the leakage circuit breaker provided by an embodiment of the present application.
[0033] Figure 6 is a schematic structural diagram of the assembly rack and the wiring module in the leakage circuit breaker provided by an embodiment of the present application.
[0034] Figure 7 is a schematic structural diagram of the assembly rack in the leakage circuit breaker provided by an embodiment of the present application.
[0035] Figure 8It is a schematic diagram of the internal structure of the leakage circuit breaker provided in the embodiment of the present application.
[0036] Figure 9 It is a schematic diagram of the internal structure of the other side of the leakage circuit breaker provided in an embodiment of the present application.
[0037] Description of Reference Numerals
[0038] 1. Shell; 11. Accommodating cavity; 2. Assembly frame; 21. Isolation plate; 211. First plate body; 212. Second plate body; 3. Transformer; 31. Detection through hole; 4. Wiring module; 41. Conductive member; 42. Yield structure; 421. First bending section; 422. Second bending section; 423. Third bending section; 43. First wiring part; 44. First conducting part; 45. Second wiring part; 46. Second conducting part; 47. Wiring member; 471. Fixing sleeve; 472. Terminal; 5. Circuit board; 6. Release structure; 7. Contact structure. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0042] 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, further definition and explanation thereof is not required in subsequent drawings.
[0043] In the description of the present application, it should be noted that, unless otherwise stated, the orientation or positional relationship indicated by terms such as "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0044] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0045] In the prior art, during the production and assembly process of a leakage circuit breaker, due to the large number of structural parts, the assembly process is complex and the assembly efficiency is low. Especially for the assembly of the current transformer and the conductive structure inside the current transformer, when the leakage circuit breaker is in use, the current transformer is set to detect the current situation inside the conductive structure to judge the working state of the circuit. When in use, part of the conductive structure needs to be inserted into the detection hole of the current transformer. During specific assembly, while the conductive structure is being inserted, both ends also need to be connected and conducted with other components.
[0046] However, when assembling the above structure, the connection structure of the conductive structure is set to be relatively complex in order to adapt to the connection structures at both ends, resulting in not only a cumbersome assembly process but also a large volume of the assembly formed by the conductive structure and the current transformer, and further leading to a large space occupation of the overall leakage circuit breaker.
[0047] Specifically, due to the complex and large-sized connection structures at both ends of the conductive structure, one assembly method is to enlarge the size of the detection hole inside the current transformer. However, the above method will also cause the size of the current transformer to increase simultaneously, and further lead to an increase in the overall structure of the leakage circuit breaker. Or, in another assembly method, the length of the conductive structure can be elongated, and a part for being inserted into the current transformer can be separately set in the middle. However, the above method will also cause an increase in the overall volume of the leakage circuit breaker.
[0048] To solve the above problems in the prior art, according to the first aspect of the present application, referring to Figures 1 to 7As shown in . An embodiment of the present application provides a leakage circuit breaker, which includes a housing 1, an assembly frame 2, a mutual inductor 3 and a wiring module 4. A accommodating chamber 11 is provided in the housing 1. The assembly frame 2 is installed on the housing 1, and the assembly frame 2 is at least partially located in the accommodating chamber 11, and the assembly frame 2 is provided with an isolation plate 21. The mutual inductor 3 is arranged in the accommodating chamber 11, and the mutual inductor 3 is arranged on one side of the assembly frame 2. A detection through hole 31 is opened on the mutual inductor 3, and the isolation plate 21 extends into the detection through hole 31. The wiring module 4 includes at least two conductive parts 41, and each conductive part 41 is respectively provided with a wiring part and a conducting part at both ends, and a part of the conductive part 41 is located in the detection through hole 31, and the isolation plate 21 is inserted between the parts of the two conductive parts 41 located in the detection through hole 31. Among them, at least one conductive part 41 is bent to form a U-shaped giving way structure 42.
[0049] Based on the above-mentioned embodiments of the present application, when the leakage circuit breaker is assembled, in the assembly part of the mutual inductor 3 and the wiring module 4, the axial direction of the detection through hole 31 in the mutual inductor 3 faces the assembly frame 2, and the mutual inductor 3 is assembled in the accommodating cavity 11 and fixed by means of clamping or the like. Subsequently, a conductive member 41 provided with a yielding structure 42 is firstly penetrated into the detection through hole 31 along the axial direction of the detection through hole 31, and the setting of the yielding structure 42 with a U-shaped bend can move radially along the detection through hole 31 to make way after penetration, thereby leaving more space for the penetration of other conductive members 41. Subsequently, after the penetration and assembly of the two conductive members 41 are completed, they are connected and conducted with other components in the circuit through the wiring part and the conduction part.
[0050] At the same time, by means of the isolation plate 21 provided on the assembly frame 2 , the isolation plate 21 can be inserted between the two conductive members 41 in the detection through hole 31 , thereby extending the creepage distance between the two conductive members 41 and improving the insulation effect.
[0051] Through the above-mentioned configuration of the present application, on the one hand, the assembly of the mutual inductor 3 and the wiring module 4 in the leakage circuit breaker is made more convenient, and on the other hand, the configuration of the yield structure 42 makes the overall volume of the assembly structure composed of the conductive part 41 and the mutual inductor 3 smaller, thereby making the overall volume of the leakage circuit breaker smaller, reducing space occupancy while reducing production and processing costs.
[0052] Specifically, when the leakage circuit breaker is in use, the conductive member 41 is connected to the circuit and is partially located in the detection through hole 31. The mutual inductor 3 detects the current flow in the circuit by induction, thereby determining the overall working state of the circuit.
[0053] In the present application, through the arrangement of the above structure, on the one hand, the size of the detection through hole 31 in the mutual inductor 3 can be set smaller, so that the overall size of the mutual inductor 3 is set smaller, thereby reducing the overall volume of the leakage circuit breaker. On the other hand, through the arrangement of the above-mentioned yielding structure 42, one of the conductive members 41 yields through the yielding structure 42 after being inserted into the detection through hole 31, thereby leaving more space for other conductive members 41, so as to facilitate the insertion and assembly of other conductive members 41, and also leave more space for the wiring and wiring process of the conductive members 41.
[0054] In the present application, the giving way structure 42 on the conductive member 41 is configured to be U-shaped, and the specific construction of the giving way structure 42 may be selected in any appropriate manner.
[0055] refer to Figure 4 and Figure 5 As shown in , in an exemplary embodiment provided in the present application, the yield structure 42 may include a first bending section 421, a second bending section 422 and a third bending section 423, and the second bending section 422 is connected between the first bending section 421 and the third bending section 423. The second bending section 422 is located in the detection through hole 31, and the extension direction of the second bending section 422 is consistent with the axial direction of the detection through hole 31.
[0056] Based on the above-mentioned embodiments of the present application, the first bending section 421, the second bending section 422 and the third bending section 423 cooperate to form a yielding structure 42 of an approximately U-shaped structure. During assembly, the second bending section 422 is located in the detection through hole 31, thereby achieving assembly and yielding.
[0057] Specifically, in the present application, the first bending section 421, the second bending section 422 and the third bending section 423 can be integrally provided and integrally formed by stamping, etc. By integrally forming the giving way structure 42 as a whole, on the one hand, the internal impedance of the giving way structure 42 as a whole can be reduced, and on the other hand, the processing can be facilitated and the processing process can be simplified.
[0058] Further, in the present application, any suitable setting can be selected for the specific structure and size of the first bending section 421, the second bending section 422 and the third bending section 423. In an exemplary embodiment provided in the present application, the first bending section 421, the second bending section 422 and the third bending section 423 are all configured as long strip-shaped plate-like structures, and the length of the second bending section 422 is greater than the thickness of the mutual inductor 3.
[0059] Based on the above-mentioned embodiments of the present application, by setting the length of the second bending section 422 to be greater than the thickness of the mutual inductor 3, the mutual inductor 3 can be located in the giving way structure 42 when giving way, thereby improving the assembly effect and reducing the overall space occupation of the assembly formed by the assembly. The setting of the long strip plate-like structure can, on the one hand, reduce the overall space occupation of the first bending section 421, the second bending section 422 and the third bending section 423, and at the same time, when connecting with the wiring part and the conducting part, it can also retain a larger contact area, thereby ensuring sufficient flow area and ensuring a strong flow capacity.
[0060] At the same time, when the length dimension of the second bending section 422 is specifically set, it is necessary to ensure that it is larger than the thickness dimension of the transformer 3, and at the same time, the dimension of the second bending section 422 cannot be too large. If the dimension of the second bending section 422 is too large, the space occupied by the entire giving way structure 42 in the axial direction of the detection through hole 31 will be relatively large, thereby affecting the overall dimension of the leakage circuit breaker.
[0061] Further, refer to Figure 5 As shown in , in some embodiments of the present application, the two ends of the yield structure 42 may be connected to the first wiring portion 43 and the first conductive portion 44 respectively, the first wiring portion 43 is connected to the first bending section 421, and the first conductive portion 44 is connected to the third bending section 423.
[0062] Based on the above-mentioned embodiments of the present application, the first wiring portion 43 and the first conducting portion 44 are arranged so that both ends of the giving way structure 42 can be connected and conducted with other structures, thereby achieving connection and conduction of the overall conductive circuit inside the leakage circuit breaker.
[0063] Specifically, one end of the give-way structure 42 is connected to the first wiring part 43, which is then connected to the external circuit through the connecting structure, while the other end of the give-way structure 42 is connected to the first conducting part 44, which is then connected to the magnetic system coil or static contact and other structures in the leakage circuit breaker, thereby realizing the cyclic conduction of the entire conductive circuit.
[0064] On the basis of the above arrangement, that is, after a yield structure 42 is arranged on one of the conductive members 41, refer to Figure 5 As shown in , the other conductive member 41 may include a second wiring portion 45 and a second conductive portion 46, and the second wiring portion 45 is connected to the second conductive portion 46. For example, when two conductive members 41 are provided, one of the conductive members 41 is provided with a yield structure 42, and the other conductive member 41 is directly provided with a structure in which the second wiring portion 45 is connected to the second conductive portion 46. Part of the second conductive portion 46 is located in the detection through hole 31, and the extension direction of the second conductive portion 46 is consistent with the axial direction of the detection through hole 31.
[0065] Based on the above embodiments of the present application, compared with the relief structure 42 formed on one conductive member 41, the second conduction portion 46 is directly provided on other conductive members 41 and inserted into the detection through hole 31. After the relief structure 42 is assembled and the relief is made, the second conduction portion 46 is directly inserted into the detection through hole 31 along the axial direction of the detection through hole 31, making the assembly process simple and fast.
[0066] Specifically, the above-mentioned conductive member 41 is directly composed of the second wiring portion 45 and the second conduction portion 46. At this time, the second conduction portion 46 penetrates into the detection through hole 31. Due to the setting of the relief structure 42 on another conductive member 41, a relatively large space still remains in the detection through hole 31 at this time, facilitating the penetration of the second conduction portion 46.
[0067] Furthermore, in the present application, the second wiring portion 45 and the second conduction portion 46 can also be set as strip-shaped plate structures. At the same time, when there are two conductive members 41, after the second conduction portion 46 penetrates, the second bending section 422 and the second conduction portion 46 are arranged oppositely, and the directions in which the second bending section 422 and the second conduction portion 46 face each other correspond to the thickness directions of the two.
[0068] Based on the above embodiments of the present application, the second bending section 422 is set as a strip-shaped plate structure, and the second conduction portion 46 is also set as a strip-shaped plate structure. During assembly, the large surfaces of the second bending section 422 and the second conduction portion 46 face each other, thereby reducing the space occupied in the detection through hole 31 after their assembly, facilitating assembly and reducing the overall volume after assembly.
[0069] In addition, in some other embodiments of the present application, when there are two conductive members 41, relief structures 42 can also be provided on the two conductive members 41 at the same time, and can be specifically set according to the specific structures of the mutual inductor 3 and the wiring module 4. The present application does not make specific limitations on this.
[0070] Or, in some other embodiments of the present application, when there are three, four or more conductive members 41, at least one conductive member 41 is provided with a relief structure 42, or multiple conductive members 41 can be provided with relief structures 42 at the same time.
[0071] In the present application, the specific structure of the isolation plate 21 can be set in any suitable manner.
[0072] Reference Figure 6 and Figure 7As shown in [reference], in an exemplary embodiment provided by the present application, when there are two conductive members 41, the isolation plate 21 may include a first plate body 211 and a second plate body 212. The first plate body 211 is located between the second bending section 422 and the second conduction part 46, and the second plate body 212 is connected to the first plate body 211 and forms an L-shaped structure with the first plate body 211.
[0073] Based on the above embodiments of the present application, by setting the first plate body 211 and the second plate body 212 to form an L-shaped structure, the creepage distance between the second bending section 422 and the second conduction part 46 is further extended, and thus the isolation effect of the isolation plate 21 is further improved.
[0074] Furthermore, by the cooperation of the first plate body 211 and the second plate body 212 to form an L-shaped structure, on the one hand, the creepage distance between the second bending section 422 and the second conduction part 46 can be further extended, and on the other hand, it can also play a role in supporting and positioning the conductive member 41 to a certain extent during the assembly of the conductive member 41.
[0075] Or, in some other embodiments of the present application, the first plate body 211 may also be directly connected to the middle of the second plate body 212, so that the first plate body 211 and the second plate body 212 together form a T-shaped structure, further extending the creepage distance between the second bending section 422 and the second conduction part 46, and further improving the insulation protection effect.
[0076] In addition, when the number of conductive members 41 is three, four or even more, the structure of the isolation plate 21 can be correspondingly set at this time, so that the isolation plate 21 can isolate the parts of each conductive member 41 arranged in the detection through hole 31, so as to extend the creepage distance between adjacent two conductive members 41 and improve the insulation isolation effect.
[0077] Reference Figures 4 to 6 As shown in [reference], in some embodiments of the present application, when there are two conductive members 41, the wiring module 4 may further include two wiring members 47. The wiring member 47 includes a fixing sleeve 471 and a wiring post 472. The fixing sleeve 471 is fixed in the accommodation cavity 11, the wiring post 472 penetrates through the housing 1 and is connected to the fixing sleeve 471, and the first wiring part 43 and the second wiring part 45 are connected to the fixing sleeve 471.
[0078] Based on the above embodiments of the present application, the wiring member 47 composed of the fixing sleeve 471 and the wiring post 472 is connected to the external circuit, and the first wiring part 43 and the second wiring part 45 are respectively connected to the fixing sleeve 471 to realize the connection and conduction with the external circuit.
[0079] Specifically, in the present application, the terminal 472 can also be set as a terminal screw, and a through hole can be opened on the shell 1 so that the terminal screw can pass through the through hole and be threadedly connected to the fixing sleeve 471. After the first terminal part 43 and the second terminal part 45 are connected to the fixing sleeve 471, it is only necessary to tighten the terminal screw so that the terminal screw abuts and fixes the first terminal part 43 and the second terminal part 45, so that the connection and conduction between the terminal member 47 and the conductive member 41 can be achieved while achieving fixation.
[0080] At the same time, a through hole may be provided on the housing 1 at a position facing the fixing sleeve 471 , so that an external circuit wire can be connected to the fixing sleeve 471 .
[0081] Furthermore, in the present application, the number of the wiring members 47 needs to be set accordingly according to the number of the conductive members 41 .
[0082] In summary, based on the above-mentioned configuration of the present application, the assembly process of the mutual inductor 3 and the wiring module 4 in the leakage circuit breaker provided by the present application is as follows: first, the mutual inductor 3 is assembled in the housing 1, and a clamping structure can also be set in the housing 1 to limit and fix the mutual inductor 3. When two conductive members 41 are provided, first, one conductive member 41 provided with a giving way structure 42 is passed through the detection through hole 31, and then the conductive member 41 is moved radially along the detection through hole 31 to give way, thereby leaving a larger space in the detection through hole 31.
[0083] Then, another conductive member 41 is inserted. When the other conductive member 41 is composed of a second wiring portion 45 and a second conductive portion 46 directly connected, the second conductive portion 46 can be directly inserted into the detection through hole 31. After the two conductive members 41 are assembled, the first conductive portion 44 and the second conductive portion 46 can be connected and conducted with the magnetic system coil or the static contact and other structures by directly abutting and contacting, and the first wiring portion 43 and the second wiring portion 45 at the other end are connected and conducted with the wiring member 47 by tightening the wiring bolts and the like.
[0084] Subsequently, the assembly frame 2 is connected to the housing 1 . When the assembly frame 2 is connected, the isolation plate 21 is inserted into the detection through hole 31 and is located between the second bending section 422 and the second conductive portion 46 , thereby extending the creepage distance between the two for insulation protection.
[0085] In summary, through the setting of the above-mentioned structure of the present application, the assembly process of the transformer 3 and the wiring module 4 in the leakage circuit breaker is simpler and faster. At the same time, the overall volume of the assembly formed after assembly is smaller, thereby reducing the overall volume of the leakage circuit breaker, reducing space occupancy, and reducing costs.
[0086] In some embodiments of the present application, after the mounting frame 2 is installed on the housing 1, in order to further strengthen the connection between the mounting frame 2 and the housing 1, the mounting frame 2 and the housing 1 can also be fixed by means such as riveting or threaded connection. For example, long screws are provided to penetrate through both the mounting frame 2 and the housing 1 to fix them together.
[0087] In addition, it should also be noted that the leakage circuit breaker in the present application is not limited to the above components. Referring to Figure 8 and Figure 9 as shown, the leakage circuit breaker may further include, for example, a tripping structure 6, a contact structure 7, and many other structures. The types and connection methods of the above specific structures can be set in any suitable manner according to the usage requirements. Since the present application does not involve the improvement of the above structures, no specific limitations are made here.
[0088] Referring to Figure 8 as shown, in some embodiments of the present application, the leakage circuit breaker may further include a circuit board 5. The circuit board 5 is disposed in the accommodation cavity 11, and the circuit board 5 is perpendicular to the thickness direction of the housing 1. The current transformer 3 is electrically connected to the circuit board 5.
[0089] Based on the above embodiments of the present application, the setting of the circuit board 5 is used for data processing and control in the leakage circuit breaker. By setting the circuit board 5 perpendicular to the thickness direction of the housing 1, the space occupied by the circuit board 5 in the thickness direction of the leakage circuit breaker is reduced, thereby reducing the thickness dimension of the leakage circuit breaker, reducing the overall volume of the leakage circuit breaker, and reducing the space occupation.
[0090] Based on the above technical solutions, according to the second aspect of the present application, an electrical system is provided. The electrical system includes the above-mentioned leakage circuit breaker.
[0091] Based on the above embodiments of the present application, the electrical system provided by the present application includes the above-mentioned leakage circuit breaker, which can perform a tripping protection when a leakage or other faults occur in the circuit. Through the setting of the above structure, not only is the assembly and maintenance of the leakage circuit breaker more convenient, but also the overall volume of the leakage circuit breaker can be reduced, and the space occupation can be reduced.
[0092] The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.
[0093] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present application does not further explain various possible combination methods.
[0094] In addition, any combination can be made among various different embodiments of the present application, as long as it does not violate the idea of the present application, and it should equally be regarded as the content disclosed by the present application.
Claims
1. An earth leakage circuit breaker, characterized in that, The leakage circuit breaker comprises: A housing is provided with a receiving cavity; An assembly rack, mounted on the housing, wherein at least a portion of the assembly rack is located in the accommodating cavity, and the assembly rack is provided with an isolation plate; A mutual inductor is arranged in the accommodating cavity, the mutual inductor is arranged on one side of the assembly frame, a detection through hole is opened on the mutual inductor, and the isolation plate extends into the detection through hole; The wiring module comprises at least two conductive members, each of which is provided with a wiring portion and a conducting portion at both ends, the conductive member is partially located in the detection through hole, and the isolation plate is inserted between the two portions of the conductive members located in the detection through hole; Wherein, at least one of the conductive members is bent to form a U-shaped yielding structure.
2. The residual current circuit breaker according to claim 1, characterized in that, One of the conductive members has the yield structure, the yield structure includes a first bending section, a second bending section and a third bending section, the second bending section is connected between the first bending section and the third bending section; The second bending section is located in the detection through hole, and the extending direction of the second bending section is consistent with the axial direction of the detection through hole.
3. The leakage circuit breaker according to claim 2, wherein Two ends of the yield structure are respectively connected with a first wiring portion and a first conducting portion, the first wiring portion is connected to the first bending section, and the first conducting portion is connected to the third bending section.
4. The residual current circuit breaker according to claim 2, characterized in that, The length of the second bending section is greater than the thickness of the mutual inductor.
5. The residual current circuit breaker according to claim 3, characterized in that, Another of the conductive members includes a second wiring portion and a second conductive portion, wherein the second wiring portion is connected to the second conductive portion; Part of the second conductive portion is located in the detection through hole, and an extending direction of the second conductive portion is consistent with an axial direction of the detection through hole.
6. The residual current circuit breaker according to claim 5, characterized in that, The second bending section and the second conducting portion are arranged opposite to each other, and the direction in which the second bending section and the second conducting portion are opposite to each other corresponds to the thickness direction of the two sections.
7. The residual current circuit breaker according to any one of claims 1-6, characterized in that, The isolation plate includes a first plate body and a second plate body, the first plate body is located between the second bending section and the second conducting portion, and the second plate body is connected to the first plate body and forms an L-shaped structure with the first plate body.
8. The residual current circuit breaker according to claim 5, characterized in that, The wiring module also includes two wiring members, which include a fixing sleeve and a terminal. The fixing sleeve is fixed in the accommodating cavity, the terminal passes through the shell and is connected to the fixing sleeve, and the first wiring part and the second wiring part are connected to the fixing sleeve.
9. The residual current circuit breaker according to claim 1, characterized in that, The leakage circuit breaker further includes a circuit board, which is arranged in the accommodating cavity and is perpendicular to the thickness direction of the shell, and the mutual inductor is electrically connected to the circuit board.
10. An electrical system, characterized in that, The electrical system comprises a residual current circuit breaker according to any one of claims 1 to 9.