Circuit breaker wiring structure

Abstract

Embodiments of this disclosure provide a wiring structure for a circuit breaker. The wiring structure includes: a housing including a wiring groove extending along its height; a mounting assembly disposed in the wiring groove and including a first mounting member and a second mounting member spaced apart along its height, each of the first and second mounting members including a pair of mounting rails arranged on opposite sidewalls of the wiring groove along its width, each mounting rail extending along its length; the wiring assembly including a support member and a nut disposed at one end of the support member, the support member having a mounting groove on its radially outer surface adapted to mate with the pair of mounting rails of either the first or second mounting member, the wiring assembly being adapted to couple to a busbar; and a terminal abutting against the nut. This arrangement allows wiring from both the forward direction and, in space-constrained conditions, the reverse direction of the circuit breaker.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the field of electrical equipment technology, and more specifically, to a wiring structure for a circuit breaker. Background Technology

[0002] A circuit breaker is an automatic switching device used to protect power systems from faults such as overload, short circuit, and leakage. Conventional circuit breakers only have one type of forward installation and forward wiring method. However, in the field of new energy, especially in the high-voltage boxes of energy storage, space is limited, and conventional circuit breakers cannot meet the diverse installation and wiring needs of users. Utility Model Content

[0003] In one aspect of this disclosure, a wiring structure for a circuit breaker is provided. The wiring structure includes: a housing having a width direction, a length direction, and a height direction, the housing including a wiring groove extending along the height direction; a mounting assembly disposed in the wiring groove and including a first mounting member and a second mounting member spaced apart along the height direction, each of the first and second mounting members including a pair of mounting rails disposed on opposite sidewalls of the wiring groove along the width direction, each mounting rail extending along the length direction; the wiring assembly including a support member and a nut disposed at one end of the support member, the support member having a mounting groove on its radially outer surface adapted to engage with one of the pair of mounting rails of the first and second mounting members, the wiring assembly being adapted to couple to a busbar; and a terminal abutting against the nut.

[0004] According to embodiments of this disclosure, by providing a double-layer mounting assembly—that is, by providing two mounting components, one above the other, within the wiring slot—wiring can be performed both in the forward direction of the circuit breaker and, in cases of space constraints, in the reverse direction. Furthermore, in reverse wiring, the wiring assembly is located between the arc nozzle and the copper busbar, and the wiring assembly provides some obstruction to the arc, increasing the insulation strength between the arc nozzle and the copper busbar.

[0005] In some embodiments, the first mounting member is adjacent to a first end of the housing in the height direction, the second mounting member is farther away from the first end of the housing than the first mounting member, and grooves are provided on the surfaces of a pair of mounting tracks of the first mounting member facing the first end and on the surfaces of a pair of mounting tracks of the second mounting member facing away from the first end.

[0006] In some embodiments, the first mounting member includes a connecting portion extending along the width direction, the two ends of the connecting portion being respectively connected to one end of a pair of mounting rails of the first mounting member near the bottom wall of the wiring groove in the length direction.

[0007] In some embodiments, the support member has a pair of spaced-apart mounting portions on the side near the terminal block, the pair of mounting portions forming a mounting space to accommodate the nut.

[0008] In some embodiments, a portion of the terminal block is located within the mounting space, and another portion of the terminal block is located outside the mounting space.

[0009] In some embodiments, the mounting groove includes a bottom wall and a pair of sidewalls extending from the bottom wall in the length direction, wherein the inner surface of the sidewall on the side away from the nut has a protrusion adapted to engage with the groove.

[0010] In some embodiments, a first fastener is further included, the first fastener being adapted to pass through mounting holes in the busbar and the terminal block and to couple to the nut to couple the busbar to the circuit breaker.

[0011] In some embodiments, the device further includes a middle cover and a pair of second fasteners, the middle cover and the housing having a first through hole and a second through hole respectively along the length direction, the pair of second fasteners being coupled to the first through hole and the second through hole of the middle cover respectively to allow the circuit breaker to be mounted laterally.

[0012] In some embodiments, the distance between a pair of mounting rails of the first mounting member and a pair of mounting rails of the second mounting member is 14.3 mm.

[0013] In another aspect of this disclosure, a circuit breaker is provided, including the wiring structure of the first aspect of this disclosure.

[0014] It should be understood that the description in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0016] Figure 1 A schematic diagram of the housing and mounting assembly of a circuit breaker according to some embodiments of the present disclosure is shown.

[0017] Figure 2 A schematic diagram of the wiring assembly of a circuit breaker wiring structure according to some embodiments of the present disclosure is shown;

[0018] Figure 3 A schematic diagram of the forward wiring configuration of a circuit breaker according to some embodiments of the present disclosure is shown;

[0019] Figure 4 A side cross-sectional view of a circuit breaker in a forward wiring configuration according to some embodiments of the present disclosure is shown;

[0020] Figure 5 A schematic diagram of a reverse wiring configuration of a circuit breaker according to some embodiments of the present disclosure is shown;

[0021] Figure 6 A side cross-sectional view of a circuit breaker in reverse wiring configuration according to some embodiments of the present disclosure is shown;

[0022] Figure 7 A schematic diagram of the middle cover structure of the wiring structure of a circuit breaker according to some embodiments of the present disclosure is shown, wherein a second fastener is coupled to a first through hole in the middle cover; and

[0023] Figure 8 A reverse structural schematic diagram of the housing of a circuit breaker according to some embodiments of the present disclosure is shown, wherein a second fastener is coupled to a second through hole in the housing.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1 is the housing, 2 is the mounting assembly, 3 is the wiring assembly, 4 is the wiring terminal, 5 is the first fastener, 6 is the middle cover, 7 is the second fastener, 10 is the busbar, 11 is the wiring groove, 12 is the first end, 13 is the second through hole, 14 is the arc nozzle, 20 is the mounting rail, 21 is the first mounting component, 22 is the second mounting component, 31 is the support component, 32 is the nut, 41 is the mounting hole, 61 is the first through hole, 100 is the circuit breaker, 211 is the connection part, 221 is the groove, 311 is the mounting groove, 312 is the mounting part, 3111 is the protrusion, X is the width direction, Y is the length direction, and Z is the height direction. Detailed Implementation

[0026] Embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0027] The term “comprising” and its variations, as used herein, indicate an open-ended inclusion, meaning “including but not limited to”. Unless otherwise stated, the term “or” means “and / or”. The terms “first,” “second,” etc., may refer to different or the same objects.

[0028] As described above, conventional circuit breakers only offer one forward installation and forward wiring method, which is insufficient to meet the diverse installation and wiring needs of users. Embodiments of this disclosure provide a circuit breaker wiring structure to at least partially solve the aforementioned problems. See below for further details. Figures 1 to 8 The wiring structure of a circuit breaker according to an embodiment of the present disclosure is described.

[0029] Figure 1 A schematic diagram of the wiring structure of the circuit breaker 100 according to some embodiments of the present disclosure is shown, including the housing 1 and the mounting assembly 2. Figure 2 A schematic diagram of the wiring assembly of a circuit breaker according to some embodiments of the present disclosure is shown. For example... Figure 1 and Figure 2 As shown, the wiring structure of the circuit breaker 100 described herein generally includes a housing 1, a mounting assembly 2, a wiring assembly 3, and terminals 4. The housing 1 serves as a support structure for the circuit breaker 100, supporting the mounting assembly 2, the wiring assembly 3, and the terminals 4. The housing 1 has a width direction X, a length direction Y, and a height direction Z. The width direction X, the length direction Y, and the height direction Z are substantially perpendicular to each other.

[0030] It is understood that the forward wiring described herein refers to wiring operated from the forward direction of circuit breaker 100 (i.e., the front of the circuit breaker, such as the side with the operating handle), and the reverse wiring refers to wiring operated from the reverse direction of circuit breaker 100 (i.e., the back of the circuit breaker). Forward mounting of circuit breaker 100 refers to the back of circuit breaker 100 being fixed to a fixed structure (e.g., a side plate), and lateral mounting refers to the side of circuit breaker 100 being fixed to a fixed structure (e.g., a side plate).

[0031] refer to Figure 1 A wiring groove 11 extending along the height direction Z is arranged on one side of the housing 1. In some embodiments, the housing 1 may include two or more wiring grooves 11 spaced apart to meet the need to connect multiple busbars.

[0032] Mounting assembly 2 is disposed in wiring groove 11. Mounting assembly 2 includes a first mounting member 21 and a second mounting member 22 spaced apart along the height direction Z. The first mounting member 21 and the second mounting member 22 each include a pair of mounting rails 20 for mounting wiring assembly 3. The pair of mounting rails 20 are arranged along the width direction X and disposed on opposite sidewalls of wiring groove 11. Each mounting rail 20 is generally elongated and extends along the length direction Y. In some embodiments, each mounting rail 20 has a square cross-section. In other embodiments, each mounting rail 20 may also have other cross-sectional shapes that mate with wiring assembly 3.

[0033] refer to Figure 2 The wiring assembly 3 includes a support member 31 and a nut 32. The support member 31 is generally I-shaped. The nut 32 is provided at one end of the support member 31, and a mounting groove 311 is provided on the outer radial side of the support member 31. The mounting groove 311 is used to mate with the mounting rail 20 to couple the wiring assembly 3 to the housing 1. The terminal 4 abuts against the nut 32. In some embodiments, one end of the terminal 4 may include a mounting hole 41 to couple the terminal 4 to the nut 32.

[0034] For conventional circuit breakers, only one mounting component is installed in the wiring slot 11, allowing users to only perform forward wiring. However, in situations where space is limited, it is inconvenient to operate the wiring from the front of the circuit breaker, thus affecting user operation. In contrast, according to the embodiments of this disclosure, by setting a double-layer mounting assembly, that is, by setting two mounting components, one above the other, in the wiring slot 11, wiring can be performed both from the forward direction of the circuit breaker and, in situations where space is limited, from the reverse direction. Furthermore, during reverse wiring, the wiring assembly 3 is located between the arc nozzle 14 and the copper busbar 10, and the wiring assembly 3 provides a certain degree of arc blocking, increasing the insulation strength between the arc nozzle 14 and the copper busbar 10.

[0035] Continue to refer to Figure 1 In some embodiments, the housing 1 has a first end 12 in the height direction. A first mounting member 21 is adjacent to the first end 12 of the housing 1, and a second mounting member 22 is further away from the first end 12 of the housing 1 than the first mounting member 21. The first mounting member 21 and the second mounting member 22 may each have a recess 221 for limiting positioning. The recess 221 may be located on the surface of a pair of mounting rails 20 of the first mounting member 21 facing the first end 12 and on the surface of a pair of mounting rails 20 of the second mounting member 22 facing away from the first end 12. The recess 221 is used to mate with a protrusion 3111 of the wiring assembly 3, which will be described below, thereby limiting the positioning of the wiring assembly 3.

[0036] In some embodiments, the first mounting member 21 may include a connecting portion 211 extending in the width direction X. Both ends of the connecting portion 211 are respectively connected to one end of a pair of mounting rails 20 of the first mounting member 21 near the bottom wall of the wiring groove 11 in the length direction Y. In some embodiments, the connecting portion 211 may be connected to the pair of mounting rails 20 via a connector. In other embodiments, the connecting portion 211 may also be integrally formed with the pair of mounting rails 20. In some embodiments, the connecting portion 211 is provided only on the first mounting member 21, and the second connecting member 21 does not include the connecting portion 211, thereby avoiding interference between the second mounting member 22 and other components of the circuit breaker 100.

[0037] In some embodiments, the two ends of the connecting portion 211 of the first mounting member 21 have arc transition portions at the connection points with the pair of mounting guide rails 20. In this way, stress concentration at the connection points can be reduced, and the support strength of the mounting assembly 2 can be improved. In some embodiments, the connecting portion 211 has a connecting rib on the side near the first end 12 in the height direction Z. The connecting rib can engage with the wiring assembly 3, thereby further improving the connection strength.

[0038] Continue to refer to Figure 2 In some embodiments, the mounting groove 311 of the support 31 includes a bottom wall and a pair of side walls extending from the bottom wall in the length direction Y. The inner surface of the side wall away from the nut 32 has a protrusion 3111, which engages with the groove 221 to limit the wiring assembly 3.

[0039] The usage of the support assembly 3 will now be described in detail. During forward wiring, the nut 32 of the support member 31 is further away from the first end 12 of the housing 1 relative to the support member 31. At this time, the protrusion 3111 of the support member 31 engages with the grooves 221 on the surfaces of the pair of mounting rails 20 of the first mounting member 21 facing the first end 12. During reverse wiring, the support assembly 3 is rotated 180°, i.e., the nut 32 is closer to the first end 12 of the housing 1 relative to the support member 31. At this time, the protrusion 3111 of the support member 31 engages with the grooves 221 on the surfaces of the pair of mounting rails 20 of the second mounting member 22 facing away from the first end 12. In this way, without adding additional parts, the circuit breaker 100 can be used for both forward and reverse wiring, solving the problem of wiring difficulties in confined spaces and meeting the user's needs for different wiring methods.

[0040] In some embodiments, the bottom wall of the mounting groove 311 has an extension on the side near the bottom wall of the wiring groove 11. The extension forms a limiting groove with the side wall of one of the pair of side walls of the mounting groove 311 near the first end 12 of the housing 1. In this way, the wiring assembly 3 can be further limited during forward wiring.

[0041] In some embodiments, the support member 31 has a pair of spaced-apart mounting portions 312 on the side near the terminal 4. The pair of mounting portions 312 constitute a mounting space, thereby arranging the nut 32 at least partially within the mounting space. In some embodiments, the pair of mounting portions 312 may be arranged on the edge of the sidewall of the mounting groove 311 near the nut 32. In some embodiments, the support member 31 has a hollow structure, thereby fixing one end of the nut within the hollow structure. In some embodiments, a portion of the terminal 4 is located within the mounting space, and another portion is located outside the mounting space. In this way, a stable support structure for supporting and fixing the copper busbar 10 is formed.

[0042] In some embodiments, refer to Figures 3 to 6 The circuit breaker 100 also includes a first fastener 5. The first fastener 5 is used to pass through the mounting holes 41 of the busbar 10 and the terminal 4 and is coupled to the nut 32, thereby coupling the busbar 10 to the circuit breaker 100. In some embodiments, the circuit breaker 100 may also include a gasket, through which the first fastener 5 passes and is coupled to the copper busbar 10 to prevent damage to the copper busbar 10.

[0043] Next, we will combine Figures 3 to 4 An exemplary structure for the forward wiring configuration of the circuit breaker 100 is described below. In the forward wiring configuration, the mounting slot 311 of the wiring assembly 3 is coupled to a pair of mounting rails 20 of the first mounting member 21. At this time, the nut 32 of the wiring assembly 3 is further away from the first end 12 of the housing 1 relative to the support member 31. The first fastener 5 passes sequentially from the front of the circuit breaker 100 through the copper busbar 10 and the terminal 4 and is coupled to the bolt 32, thereby coupling the copper busbar 10 to the circuit breaker 100.

[0044] Combination Figures 5 to 6 An exemplary structure for the reverse wiring configuration of the busbar assembly 80 is described below. In the reverse wiring configuration, the mounting groove 311 of the wiring assembly 3 is coupled to a pair of mounting rails 20 of the second mounting member 22. At this time, the nut 32 of the wiring assembly 3 is closer to the first end 12 of the housing 1 relative to the support member 31. During reverse wiring, the wiring assembly 3 is rotated 180° relative to the wiring assembly 3 in the forward wiring configuration. The first fastener 5 passes sequentially from the back of the circuit breaker 100 through the copper busbar 10 and the terminal 4 and is coupled to the bolt 32, thereby coupling the copper busbar 10 to the circuit breaker 100.

[0045] In addition, when the wiring is reversed, the wiring assembly 3 is located between the arc nozzle 14 and the copper busbar 10. The wiring assembly 3 plays a certain role in blocking the arc and increases the insulation strength between the arc nozzle 14 and the copper busbar 10.

[0046] refer to Figure 7 and Figure 8 In some embodiments, the circuit breaker 100 can also be mounted laterally. The circuit breaker 100 may further include a middle cover 6 and a pair of second fasteners 7. The middle cover 6 has a first through hole 61 along its length Y, and the housing 1 has a second through hole 13 along its length Y. The pair of second fasteners 7 are respectively coupled to the first through hole 61 of the middle cover 6 and the second through hole 13 of the housing 1, thereby laterally fixing the circuit breaker 100. In the case of lateral mounting, the circuit breaker 100 can also be wired in both forward and reverse directions. The wiring process is the same as the forward and reverse wiring mentioned above for forward mounting, and will not be described again here.

[0047] In some embodiments, to ensure that the wiring assembly 3 avoids interference with the first mounting member 21 and the second mounting member 22 during forward or reverse wiring, a certain distance needs to be maintained between the pair of mounting rails 20 of the first mounting member 21 and the pair of mounting rails 20 of the second mounting member 22. This distance needs to be adapted to the size of the terminal 4; for example, if the thickness of the terminal is 4mm, the distance between the pair of mounting rails 20 of the first mounting member 21 and the pair of mounting rails 20 of the second mounting member 22 is 14.3mm.

[0048] It should be noted that the figures, values, etc., mentioned above and elsewhere in this disclosure are exemplary and are not intended to limit the scope of this disclosure in any way. Any other suitable figures or values ​​are possible.

[0049] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A wiring structure for a circuit breaker (100), characterized in that, The wiring structure includes: The housing (1) has a width direction (X), a length direction (Y) and a height direction (Z), and the housing (1) includes a wiring groove (11) extending along the height direction (Z); Mounting assembly (2) is disposed in the wiring groove (11) and includes a first mounting member (21) and a second mounting member (22) spaced apart along the height direction (Z). The first mounting member (21) and the second mounting member (22) each include a pair of mounting rails (20) arranged on opposite sidewalls of the wiring groove (11) along the width direction (X), and each mounting rail (20) extends along the length direction (Y). A wiring assembly (3) includes a support member (31) and a nut (32) disposed at one end of the support member (31). The support member (31) has a mounting groove (311) on its radially outer surface, the mounting groove (311) being adapted to mate with a pair of mounting rails (20) of either the first mounting member (21) or the second mounting member (22). The wiring assembly (3) is adapted to couple to a busbar (10). Terminal (4) abuts against nut (32).

2. The wiring structure according to claim 1, characterized in that, The first mounting member (21) is adjacent to the first end (12) of the housing (1) in the height direction (Z), and the second mounting member (22) is farther away from the first end (12) of the housing (1) than the first mounting member (21). The surfaces of the pair of mounting rails (20) of the first mounting member (21) facing the first end (12) and the surfaces of the pair of mounting rails (20) of the second mounting member (22) facing away from the first end (12) are provided with grooves (221).

3. The wiring structure according to claim 2, characterized in that, The first mounting member (21) includes a connecting portion (211) extending along the width direction (X), the two ends of which are respectively connected to one end of a pair of mounting rails (20) of the first mounting member (21) near the bottom wall of the wiring groove (11) in the length direction (Y).

4. The wiring structure according to claim 1, characterized in that, The support member (31) has a pair of spaced mounting portions (312) on the side near the terminal (4), which form a mounting space to accommodate the nut (32).

5. The wiring structure according to claim 4, characterized in that, One part of the terminal block (4) is located within the mounting space, and the other part of the terminal block (4) is located outside the mounting space.

6. The wiring structure according to claim 2, characterized in that, The mounting groove (311) includes a bottom wall and a pair of side walls extending from the bottom wall in the length direction (Y), wherein the inner surface of the side wall away from the nut (32) has a protrusion (3111) to be adapted to engage with the groove (221).

7. The wiring structure according to any one of claims 1-6, characterized in that, It also includes a first fastener (5) adapted to pass through the mounting holes (41) of the busbar (10) and the terminal (4) and coupled to the nut (32) to couple the busbar (10) to the circuit breaker (100).

8. The wiring structure according to any one of claims 1-6, characterized in that, It also includes a middle cover (6) and a pair of second fasteners (7), the middle cover (6) and the housing (1) having a first through hole (61) and a second through hole (13) respectively along the length direction (Y), the pair of second fasteners (7) being coupled to the first through hole and the second through hole of the middle cover (6) respectively to allow the circuit breaker (100) to be mounted laterally.

9. The wiring structure according to any one of claims 1-6, characterized in that, The distance between the pair of mounting rails (20) of the first mounting member (21) and the pair of mounting rails (20) of the second mounting member (22) is 14.3 mm.

10. A circuit breaker comprising the wiring structure according to any one of claims 1-9.

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