Circuit breaker

Abstract

The utility model provides a circuit breaker, and relates to the technical field of low-voltage electric appliances. The circuit breaker comprises a shell assembly, a static contact assembly and a moving contact assembly. The housing assembly includes a first housing. The static contact assembly is fixedly installed on the shell. The moving contact assembly is movably installed on the shell, and the moving contact assembly can move to the position where the moving contact assembly makes contact with the static contact assembly. Wherein the static contact assembly comprises a static contact body and a first line bank which are connected with each other, the static contact body is fixedly installed on the first shell, the first line bank is fixedly connected with the static contact body, and the first line bank is matched with the static contact body to form a first included angle. And / or the moving contact assembly comprises a moving contact body and a second line bank which are connected, the moving contact body is movably connected to the second line bank, the second line bank is fixedly connected to the matching wall of the first shell, and the second line bank is matched with the matching wall to form a second included angle. According to the circuit breaker provided by the embodiment of the invention, the possibility of high temperature rise in the circuit breaker can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to a circuit breaker. BACKGROUND

[0002] The circuit breaker can protect the circuit to which the circuit breaker is connected, or switch the use state of the circuit. In the case of abnormal conditions such as overload, short circuit, and leakage of the circuit, the circuit breaker can be in a tripped state, thereby disconnecting the circuit and reducing the possibility of further expansion of the fault.

[0003] The circuit breaker can include a moving contact and a stationary contact, both of which can be connected to external wires through a wiring panel. Based on the structure of the existing circuit breaker, during use of the circuit breaker, high temperature rise can easily occur inside the circuit breaker, affecting the use performance of the circuit breaker. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a circuit breaker, which can reduce the possibility of high temperature rise inside the circuit breaker and ensure the use performance of the circuit breaker.

[0005] In a first aspect, the present application provides a circuit breaker, which includes a housing assembly, a stationary contact assembly, and a moving contact assembly. The housing assembly includes a first housing. The stationary contact assembly is fixedly installed on the housing. The moving contact assembly is movably installed on the housing and can be moved to a position in contact with the stationary contact assembly. The stationary contact assembly includes a stationary contact body and a first wiring panel connected thereto. The stationary contact body is fixedly installed on the first housing, and the first wiring panel is fixedly connected to the stationary contact body. The first wiring panel and the stationary contact body cooperate to form a first included angle. Alternatively or additionally, the moving contact assembly includes a moving contact body and a second wiring panel connected thereto. The moving contact body is movably connected to the second wiring panel, and the second wiring panel is fixedly connected to a cooperating wall of the first housing. The second wiring panel and the cooperating wall cooperate to form a second included angle.

[0006] In the example of the present application, the stationary contact assembly is fixedly connected to the first housing, and the moving contact assembly is movably connected to the first housing. The moving contact assembly can be moved to a position in contact with the stationary contact assembly, and the circuit breaker is in a closed state. Alternatively, the moving contact assembly can be moved to a position separated from the stationary contact assembly, and the circuit breaker is in an open state.

[0007] By setting the first wiring panel and the stationary contact body to form a non-zero included angle, during use of the circuit breaker, part of the first wiring panel is exposed to the outside of the first housing, so that the area through which the external air flows through the first wiring panel is larger, and the heat generated at the first wiring panel exposed to the outside of the first housing is easily carried away by the flowing external air, thereby improving the heat dissipation efficiency of the first wiring panel, reducing the temperature rise of the stationary contact assembly during use, and ensuring the use performance of the circuit breaker.

[0008] Further, in the case that the circuit breaker is a multi-phase circuit breaker, since the first wiring row and the static contact body cooperate to form the first included angle, the distance between the first wiring rows corresponding to different phases can be large, which is beneficial to improve the insulation performance between different phases of the circuit breaker. Moreover, the distance between the first wiring rows corresponding to different phases is large, which is beneficial to the external air passing through between the first wiring rows corresponding to different phases, and is beneficial to improve the heat dissipation efficiency at the first wiring row, reduce the temperature rise generated at the first wiring row, reduce the temperature rise generated by the static contact assembly during use, and ensure the use performance of the circuit breaker.

[0009] Compared with the prior art, by setting the switching structure to realize the vertical arrangement of the first wiring row and the static contact body, in the example of the present application, the first wiring row is directly connected with the static contact body, and the first wiring row cooperates with the static contact body to form the first included angle, thereby saving the setting of the switching structure, simplifying the structure of the static contact assembly, reducing the manufacturing cost of the static contact assembly, and further reducing the manufacturing cost of the circuit breaker.

[0010] In the moving contact assembly, the second wiring row cooperates with the cooperation wall to form a second included angle, which has a similar effect to that of the first included angle formed by the cooperation of the first wiring row and the static contact body, which will not be described herein.

[0011] In some possible implementation manners, the first wiring row is substantially perpendicular to the static contact body.

[0012] By arranging the first wiring row to be substantially perpendicular to the static contact body, the heat generated at the first wiring row exposed to the outside of the first housing can be easily taken away by the flowing external air, the heat dissipation efficiency at the first wiring row is improved, the temperature rise generated by the static contact assembly during use is reduced, and the use performance of the circuit breaker is ensured.

[0013] In some possible implementation manners, the first wiring row and the static contact body are integrally arranged. Alternatively, the first wiring row and the static contact body can be detachably connected.

[0014] In the example of the present application, by arranging the static contact body and the first wiring row to be integrally arranged, the assembly process of the static contact body and the first wiring row can be saved, the connection reliability of the static contact body and the first wiring row is ensured, and the use reliability of the static contact body and the first wiring row is further ensured.

[0015] By arranging the static contact body and the first wiring row to be detachably connected, the static contact assembly can be easily maintained. In the case that any one of the static contact body and the first wiring row is damaged, the damaged one can be repaired, which is beneficial to reduce the use cost of the circuit breaker.

[0016] In some possible implementations, the part of the first wiring row arranged outside the first shell is a first wiring segment, and the first wiring segment is provided with a mounting hole. The static contact assembly includes an abutting piece arranged through the mounting hole, and the abutting piece can abut against the outer wall of the first shell when the first wiring segment moves relative to the first shell.

[0017] In the use of the circuit breaker, the first wiring row can move relative to the first shell. In the example of the present application, the abutting piece is arranged on the first wiring segment, and the abutting piece can abut against the first shell when the first wiring row moves relative to the first shell. Since the abutting piece can abut against the first shell, and the abutting piece is arranged on the first wiring segment, the abutment between the abutting piece and the first shell can limit the amplitude of the movement of the first wiring segment relative to the first shell.

[0018] In some possible implementations, the first shell is provided with a limiting hole, and part of the first wiring row is arranged to protrude outside the first shell through the limiting hole. The circuit breaker includes a matching clamping protrusion and a clamping groove, at least part of the clamping protrusion can be clamped into the clamping groove, the clamping protrusion is arranged on the first wiring row, and the clamping groove is arranged on the hole wall of the mounting hole. Alternatively, the clamping protrusion is arranged on the hole wall of the mounting hole, and the clamping groove is arranged on the first wiring row.

[0019] In the example of the present application, on the basis of the fixed installation of the first wiring row on the first wiring row through the static contact body, by arranging the clamping protrusion and the clamping groove, and one of the clamping protrusion and the clamping groove is arranged on the first wiring row, and the other is arranged on the hole wall of the mounting hole, and the mounting hole is arranged on the first shell, the mutual position of the first wiring row and the first shell can be limited by the cooperation of the clamping protrusion and the clamping groove, and the amplitude of the movement of the first wiring row relative to the first shell is reduced.

[0020] In some possible implementations, the shell assembly includes a second shell fixedly connected with the first shell, and the static contact assembly further includes a first bridge contact and a first external wiring row.

[0021] The first bridge contact includes a first clamping opening and a second clamping opening, the opening directions of the first clamping opening and the second clamping opening are opposite, and the first clamping opening clamps the first wiring row. The first external wiring row is arranged through the second shell, and the first external wiring row includes a first clamping segment and a second wiring segment connected with each other, the first clamping segment is arranged in the second shell, the second clamping opening clamps the first clamping segment, at least part of the second wiring segment is arranged outside the second shell, the second wiring segment is connected with an external wiring, and the first clamping segment is substantially parallel to the first wiring row.

[0022] In the examples of the present application, the first clamping opening can clamp the first wiring row, and the second clamping opening can clamp the first clamping section. Since the first clamping section is part of the first external wiring row, the first clamping opening and the second clamping opening are both arranged on the first bridge-shaped contact, and thus the electrical connection between the first wiring row and the first external wiring row can be achieved through the first bridge-shaped contact. Since the first wiring row is part of the static contact assembly, and the first external wiring row can be connected to the external lead wire, the electrical connection between the first wiring row and the first external wiring row can achieve the electrical connection between the static contact assembly and the external lead wire.

[0023] In addition, in the examples of the present application, the opening directions of the first clamping opening and the second clamping opening are opposite. By arranging the movement directions of the first clamping opening and the second clamping opening to be substantially perpendicular to the first wiring row, and arranging the first clamping section to be substantially parallel to the first wiring row, and arranging the first clamping section and the first wiring row to form an included angle with the matching wall, the cooperation between the first clamping opening and the first wiring section can be more reliable, the cooperation between the second clamping opening and the first clamping section can be more reliable, and thus the connection reliability between the first clamping section, the first bridge-shaped contact, and the first external wiring row can be ensured.

[0024] In some possible implementations, the first clamping section is coplanar with the second wiring section, or the first clamping section cooperates with the second wiring section to form a third included angle.

[0025] In the examples of the present application, the first clamping section and the second wiring section can be arranged to be coplanar, or the first clamping section and the second wiring section can be arranged to form a third included angle according to customer needs, so that the circuit breaker can be suitable for different scenes and meet different needs of customers.

[0026] In some possible implementations, the first clamping section is provided with a first mounting slot on the side facing the second wiring section, and part of the second wiring section is clamped to the first mounting slot, and / or the second wiring section is provided with a second mounting slot on the side facing the first clamping section, and part of the first clamping section is clamped to the second mounting slot.

[0027] In the examples of the present application, the first external wiring row can also be provided with the first mounting slot and the second mounting slot at the same time. The first mounting slot is arranged on the second wiring section, and the second mounting slot is arranged on the first clamping section. The clamping of the first mounting slot and the second mounting slot can achieve the clamping of the second wiring section and the first clamping section.

[0028] In the examples of the present application, when the first clamping section is provided with the first mounting slot, since the first mounting slot is arranged on the first clamping section, and part of the second wiring section can extend into the first mounting slot, the cooperation between the first mounting slot and the second wiring section can achieve the connection between the first clamping section and the second wiring section.

[0029] In the case that the second installation groove is arranged at the second wiring segment, and part of the first clamping segment can extend into the second installation groove, the connection between the first clamping segment and the second wiring segment can be realized through the cooperation between the second installation groove and the first clamping segment.

[0030] In some possible implementation manners, the first external wiring row further includes a first transition block, one side of the first transition block is connected to the first clamping segment, the other side of the first transition block is connected to the second wiring segment, and the cross-sectional area of the first transition block decreases in the direction away from the first clamping segment.

[0031] In the examples of the present application, by connecting the first transition block between the one side of the first clamping segment and the second wiring segment, the amplitude of the shaking of the first clamping segment relative to the second wiring segment can be reduced, and the use reliability of the first external wiring row can be ensured.

[0032] In addition, since the cross-sectional area of the first transition block decreases in the direction away from the second wiring segment, the current reaching the first clamping segment via the second wiring segment can gradually change, so that the possibility of the current flowing through the second wiring segment to the first clamping segment is suddenly changed is low, which is beneficial to ensure the use performance of the first external wiring row.

[0033] In some possible implementation manners, the shell assembly includes a second shell, the second shell is fixedly connected with the first shell, and the movable contact assembly further includes a second bridge-type contact and a second external wiring row.

[0034] The second bridge-type contact includes a third clamping opening and a fourth clamping opening, the opening directions of the third clamping opening and the fourth clamping opening are opposite, and the third clamping opening clamps the second wiring row. The second external wiring row is arranged in the second shell, and the second external wiring row includes a second clamping segment and a second wiring segment connected with each other. The second clamping segment is arranged in the second shell, the third clamping opening clamps the second clamping segment, at least part of the second wiring segment is arranged outside the second shell, the second wiring segment is connected with an external wire, and the second clamping segment is substantially parallel to the second wiring row.

[0035] The second bridge-type contact is similar in structure to the first bridge-type contact, the second external wiring row is similar in structure to the first external wiring row, and the functions are similar. The examples of the present application will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A structure schematic view of a first perspective of a circuit breaker is provided in the examples of the present application.

[0037] Figure 2 A structure schematic view of a second perspective of a circuit breaker is provided in the examples of the present application.

[0038] Figure 3 A structure schematic view of a second perspective of a circuit breaker is provided in the examples of the present application. Figure 2 A sectional view at A-A.

[0039] Figure 4 A mating diagram of a moving contact assembly and a stationary contact assembly provided for an example of the present application.

[0040] Figure 5 A structural diagram of a transformer provided for an example of the present application.

[0041] Figure 6 A mating diagram of a moving contact assembly and a stationary contact assembly provided for an example of the present application.

[0042] Figure 7 A mating diagram of a moving contact assembly and a stationary contact assembly provided for an example of the present application.

[0043] Figure 8 A structural diagram of a stationary contact assembly provided for an example of the present application.

[0044] Figure 9 A structural diagram of a stationary contact assembly provided for an example of the present application.

[0045] Figure 10 A structural diagram of a first external terminal provided for an example of the present application.

[0046] Figure 11 A structural diagram of a first clamping section provided for an example of the present application.

[0047] BRIEF DESCRIPTION OF DRAWINGS

[0048] 100, circuit breaker; 110, housing assembly; 111, first housing; 112, second housing; 120, stationary contact assembly; 121, first terminal block; 122, first bridge contact; 123, first external terminal; 1231, second terminal section; 1232, first clamping section; 1233, first transition block; 1234, first mounting slot; 124, stationary contact body; 125, mounting hole; 126, third terminal block; 127, third bridge contact; 128, third external terminal; 130, moving contact assembly; 131, second terminal block; 132, second bridge contact; 133, second external terminal; 134, moving contact body; 135, fourth terminal block; 136, fourth bridge contact; 137, fourth external terminal; 140, transformer; 141, through hole. DETAILED DESCRIPTION

[0049] In order to make the purposes, technical solutions and advantages of the examples of the present application clearer, the technical solutions in the examples of the present application will be described clearly and completely in conjunction with the accompanying drawings in the examples of the present application. Obviously, the described examples are only some but not all of the examples of the present application. Based on the examples in the present application, all other examples obtained by a person of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terminology used in the specification herein is for the purpose of describing particular examples only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as well as their conjugates, as used herein, are intended to encompass the inclusion of one or more integers, features, elements, components, steps, operations, and / or functions; the terminology includes the singular and / or plural of the terms preceding it.

[0051] Reference herein to "an example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of the present application. The appearances of the phrase "in an example" in various places in the specification are not necessarily all referring to the same example, nor are they necessarily mutually exclusive or alternative examples to one another. A person of ordinary skill in the art will readily recognize from the description herein certain examples as being composites of the various instances of the technology disclosed and described herein in conjunction with others of the examples and / or the functions and / or advantages of the example combination.

[0052] The term "and / or", merely used as a description of associated objects, means that there can be three relationships, for example, A and / or B, which means that there are A, A and B, and B. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects.

[0053] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the circuit breaker of the present application.

[0054] In addition, the terms "first", "second", and the like in the specification and claims of the present application or the above drawings are used to distinguish different objects, and are not used to describe a specific order, which can explicitly or implicitly include one or more of the features.

[0055] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more (including two), and similarly, "a plurality of groups" means two or more groups (including two groups).

[0056] In the description of the application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, the "connection" or "connecting" of mechanical structures can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by spacer, for example, fixed connection by screw, bolt or other spacer; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0057] When a short circuit, overload or other fault state occurs in the circuit, the circuit breaker can be switched from the closed state to the open state, so that no current passes through the circuit, reducing the possibility of further expansion of the fault in the circuit.

[0058] The circuit breaker generally includes a static contact and a moving contact. When the moving contact is separated from the static contact, the circuit breaker is in an open state. The static contact and the first wiring row and other structures can cooperate to form a static contact assembly, and the static contact can be connected to an external conductor through the first wiring row. The moving contact and the second wiring row and other structures can cooperate to form a moving contact assembly, and the moving contact can be connected to an external conductor through the second wiring row.

[0059] Based on the structure of the existing static contact assembly and the moving contact assembly, the first wiring row and the second wiring row are directly or indirectly mounted on the housing, and the first wiring row is substantially parallel to the static contact, and the second wiring row is also substantially parallel to the static contact. Based on the structure of the static contact assembly and the moving contact assembly, the temperature at the static contact assembly and the moving contact assembly is likely to rise during use of the circuit breaker, which in turn causes the internal temperature of the circuit breaker to rise, affecting the performance of the circuit breaker.

[0060] In some related technologies, an adapter structure can be connected to the first wiring row and / or the second wiring row. The adapter structure can make the first wiring row and / or the second wiring row perpendicular to the static contact body, so as to reduce the possibility of high temperature rise at the static contact assembly and / or the moving contact assembly. However, the structure of the static contact assembly and the moving contact assembly is relatively complex, which increases the manufacturing cost of the circuit breaker.

[0061] Based on the above, the present application provides a circuit breaker.

[0062] In order for those skilled in the art to better understand the present application, the circuit breaker provided by the present application will be described clearly and completely below with reference to the accompanying drawings.

[0063] Exemplarily, the present application provides a circuit breaker, Figure 1A structural schematic diagram of a first perspective of a circuit breaker according to an example of the present application, Figure 2 A structural schematic diagram of a second perspective of a circuit breaker according to an example of the present application, Figure 3 A structural schematic diagram of a second perspective of a circuit breaker according to an example of the present application, Figure 2 A sectional view at A-A, Figure 4 A schematic diagram of the cooperation between a moving contact assembly and a stationary contact assembly according to an example of the present application, Figure 5 A structural schematic diagram of a transformer according to an example of the present application, Figure 6 A schematic diagram of the cooperation between a moving contact assembly and a stationary contact assembly according to an example of the present application, Figure 7 A schematic diagram of the cooperation between a moving contact assembly and a stationary contact assembly according to an example of the present application, Figure 8 A structural schematic diagram of a stationary contact assembly according to an example of the present application.

[0064] Please refer to Figures 1 to 8 , the circuit breaker 100 can include a housing assembly 110, a stationary contact assembly 120 and a moving contact assembly 130. The housing assembly 110 can include a first housing 111. The stationary contact assembly 120 can be fixedly installed on the housing. The moving contact assembly 130 is movably installed on the housing, and the moving contact assembly 130 can be moved to a position in contact with the stationary contact assembly 120. The stationary contact assembly 120 can include a stationary contact body 124 and a first wiring row 121 connected to each other, the stationary contact body 124 is fixedly installed on the first housing 111, the first wiring row 121 is fixedly connected to the stationary contact body 124, and the first wiring row 121 and the stationary contact body 124 cooperate to form a first included angle A. And / or, the moving contact assembly 130 can include a moving contact body 134 and a second wiring row 131 connected to each other, the moving contact body 134 is movably connected to the second wiring row 131, the second wiring row 131 is fixedly connected to the cooperating wall of the first housing 111, and the second wiring row 131 and the cooperating wall cooperate to form a second included angle.

[0065] The circuit breaker 100 can be a single-phase circuit breaker 100, or a multi-phase circuit breaker 100. Each phase of the circuit breaker 100 can correspond to a set of cooperating moving contact assemblies 130 and stationary contact assemblies 120.

[0066] The housing assembly 110 can only include the first housing 111, or the housing assembly 110 can be formed by a plurality of detachable components, which are not specifically limited in the examples of the present application.

[0067] The housing assembly 110 can be made of insulating materials, such as polyvinyl chloride, polycarbonate (also known as PC plastic), etc.

[0068] The shell assembly 110 made of insulating material can reduce the possibility of current escaping from the inside of the shell assembly 110 to the outside of the shell assembly 110, thereby ensuring the safety of the circuit breaker 100.

[0069] The static contact assembly 120 includes a static contact body 124 and the first busbar 121, which can be two independent components. In this case, the static contact body 124 can be fixedly connected to the busbar by riveting, clamping, screwing, welding, or the like. The static contact body 124 and the first busbar 121 can also be integrally formed, and the present application does not make specific limitations in this regard.

[0070] Part of the first busbar 121 can extend to the outside of the first shell 111 and be directly or indirectly connected to an external wire. In this way, the static contact body 124 is electrically connected to the external wire through the first busbar 121.

[0071] The static contact body 124 can be fixedly connected to the first shell 111 by screwing, riveting, fusion, or other means.

[0072] The first busbar 121 and the static contact body 124 can be made of the same material or different materials, as long as they have good electrical conductivity and can reliably electrically connect the electrical loop inside the circuit breaker 100 to the external wire. For example, the first busbar 121 and the static contact body 124 can be made of copper or copper alloy.

[0073] The first busbar 121 and the static contact body 124 form a first included angle A. It can be understood that the first included angle A is formed by the wall of the static contact body 124 cooperating with the first shell 111 and the side wall of the first busbar 121. The side wall of the first busbar 121 refers to the wall between the first side and the second side of the first busbar 121 and cooperating with the static contact body 124. The first side of the first busbar 121 refers to the outer wall of the first busbar 121 cooperating with the first shell 111, and the second side of the first busbar 121 refers to the outer wall of the first busbar 121 away from the first side. The first included angle A can be any of an acute angle, a right angle, or an obtuse angle.

[0074] The moving contact assembly 130 is movable relative to the static contact assembly 120. The moving contact assembly 130 can include a moving contact body 134 and a second busbar 131.

[0075] The moving contact body 134 can be movably connected to the second busbar 131 by a hole shaft connection, a flexible connection, or the like. The moving contact body 134 can be directly connected to the second busbar 131, or the moving contact body 134 can be connected to the second busbar 131 through a connecting piece, and the present application does not make specific limitations in this regard.

[0076] The movable contact body 134 can be connected to the first housing 111, and the movable contact body 134 can also be connected to the first housing 111 through a mounting bracket or the like.

[0077] In the case where the movable contact body 134 is connected to the first housing 111 through the mounting bracket, the mounting bracket can be fixedly connected to the first housing 111 by screwing, riveting or the like. The movable contact body 134 can be movably connected to the mounting bracket by hole shaft connection, flexible connection or other connection modes.

[0078] The second busbar 131 and the mounting bracket can be integrally formed, and the second busbar 131 and the mounting bracket can also be fixedly connected by clamping, welding, screwing or the like.

[0079] The manufacturing materials of the second busbar 131 and the mounting bracket can be the same or different, as long as the second busbar 131 and the mounting bracket have good electrical conductivity, and reliable electrical connection between the electrical loop inside the circuit breaker 100 and the external lead can be achieved. For example, the second busbar 131 and the mounting bracket can be made of copper or copper alloy material.

[0080] The second busbar 131 and the cooperating wall cooperate to form a second included angle, which can be understood as an included angle formed by the cooperating wall and the side wall of the second busbar 131. The side wall of the second busbar 131 refers to the wall between the first side and the second side of the second busbar 131. The first side of the second busbar 131 refers to the outer wall of the second busbar 131 cooperating with the first housing 111, and the second side of the second busbar 131 refers to the wall away from the first side. The second included angle can refer to any one of an acute angle, a right angle or an obtuse angle.

[0081] Please refer to Figure 5 The second busbar 131 can be sleeved with a mutual inductor 140, and the mutual inductor 140 can be provided with a through hole 141. In the example of the present application, the through hole 141 provided by the mutual inductor 140 is adapted to the shape of the second busbar 131 to ensure the cooperation reliability of the mutual inductor 140 and the second busbar 131. Taking the part where the second busbar 131 cooperates with the mutual inductor 140 as an example, the longest side of the through hole 141 can cooperate with the cooperating wall to form a fourth included angle, and the fourth included angle is equal to the second included angle.

[0082] Please refer to Figure 6 and Figure 8In the example of the application, only the first wiring row 121 and the static contact body 124 can form the first included angle A, at this time, the movable contact assembly includes a fourth wiring row 135 matched with the movable contact body, the movable contact body is movably connected with the fourth wiring row 135, the fourth wiring row 135 is fixedly connected with the matching wall of the shell, and the fourth wiring row 135 is parallel to the matching wall. Taking the fourth wiring row 135 as a cuboid as an example, the largest side wall in the fourth wiring row 135 is parallel to the matching wall, or the largest side wall in the fourth wiring row 135 is in contact with the matching wall.

[0083] Please refer to Figure 7 In the example of the application, only the second wiring row 131 and the matching wall can form the second included angle, at this time, the static contact assembly includes a third wiring row 126 matched with the static contact body, the third wiring row 126 is fixedly connected with the shell, the static contact body is fixedly connected with the third wiring row 126, and the third wiring row 126 is parallel to the static contact body. Taking the third wiring row 126 as a cuboid as an example, the largest side wall in the third wiring row 126 can be parallel to the static contact body.

[0084] Please refer to Figure 4 and Figure 8 In the example of the application, the first wiring row 121 and the static contact body 124 can form the first included angle A, and the second wiring row 131 and the matching wall can form the second included angle, and the example of the application does not make specific limitations on this.

[0085] Based on the above, in the example of the application, the static contact assembly 120 is fixedly connected with the first shell 111, and the movable contact assembly 130 is movably connected with the first shell 111. The movable contact assembly 130 can be moved to a position in contact with the static contact assembly 120, and the circuit breaker 100 is in a closed state. The movable contact assembly 130 can also be moved to a position separated from the static contact assembly 120, at this time, the circuit breaker 100 is in an open state.

[0086] By setting the first wiring row 121 and the static contact body 124 to form a non-zero included angle, in the use process of the circuit breaker 100, part of the first wiring row 121 is exposed to the outside of the first shell 111, so that the external air flows through a larger area of the first wiring row 121, and the heat generated at the first wiring row 121 exposed to the outside of the first shell 111 is easily taken away by the flowing external air, improving the heat dissipation efficiency of the first wiring row 121, reducing the temperature rise of the static contact assembly 120 in the use process, and ensuring the use performance of the circuit breaker 100.

[0087] In addition, in the case of the multi-phase circuit breaker 100, since the first wiring row 121 and the static contact body 124 cooperatively form the first included angle A, the distance between the first wiring rows 121 corresponding to different phases can be large, which is beneficial to improve the insulation performance between different phases of the circuit breaker 100. Moreover, the distance between the first wiring rows 121 corresponding to different phases is large, which is beneficial to the external air passing through between the first wiring rows 121 corresponding to different phases, and is beneficial to improve the heat dissipation efficiency at the first wiring row 121, reduce the temperature rise generated at the first wiring row 121, reduce the temperature rise generated by the static contact assembly 120 during use, and ensure the use performance of the circuit breaker 100.

[0088] Compared with the prior art, the first wiring row 121 and the static contact body 124 are directly connected in the example of the present application, and the first wiring row 121 and the static contact body 124 cooperatively form the first included angle A, which saves the setting of the switching structure, simplifies the structure of the static contact assembly 120, reduces the manufacturing cost of the static contact assembly 120, and further reduces the manufacturing cost of the circuit breaker 100.

[0089] In the moving contact assembly 130, the second wiring row 131 and the cooperating wall cooperatively form a second included angle, which has a similar effect to that of the first included angle A formed by the first wiring row 121 and the static contact body 124. The specific structure of the moving contact assembly 130 is similar to that of the static contact assembly 120, and the example of the present application will not be described here.

[0090] The structure of the moving contact assembly 130 is similar to that of the static contact assembly 120, and the example of the present application will only take the static contact assembly 120 as an example to expand the description of the specific structure of the moving contact assembly 130 and the static contact assembly 120.

[0091] Based on the circuit breaker 100 provided in the above example, the first wiring row 121 is substantially perpendicular to the static contact body 124.

[0092] The first wiring row 121 is substantially perpendicular to the static contact body 124, that is, the side of the static contact body 124 away from the bottom wall of the shell is substantially perpendicular to the side wall of the first wiring row 121. Specifically, it can be understood that the first included angle A formed by the wall of the static contact body 124 cooperating with the first shell 111 and the side wall of the first wiring row 121 is greater than or equal to 85 degrees and less than or equal to 95 degrees.

[0093] In the example of the present application, by setting the first wiring row 121 substantially perpendicular to the static contact body 124, the heat generated at the first wiring row 121 exposed to the outside of the first shell 111 can be easily carried away by the flowing external air, the heat dissipation efficiency at the first wiring row 121 is improved, the temperature rise generated by the static contact assembly 120 during use is reduced, and the use performance of the circuit breaker 100 is ensured.

[0094] Based on the circuit breaker 100 provided in the above example, the first wiring row 121 is integrally arranged with the static contact body 124. Alternatively, the first wiring row 121 is detachably connected with the static contact body 124.

[0095] The static contact body 124 and the first wiring row 121 can be integrally formed by casting or other means.

[0096] In the example of the present application, by arranging the static contact body 124 and the first wiring row 121 integrally, the assembly process of the static contact body 124 and the first wiring row 121 can be saved, the connection reliability of the static contact body 124 and the first wiring row 121 can be ensured, and the use reliability of the static contact body 124 and the first wiring row 121 can be ensured.

[0097] By arranging the static contact body 124 and the first wiring row 121 to be detachable, the static contact assembly 120 can be easily maintained. In the case that either the static contact body 124 or the first wiring row 121 is damaged, the damaged one can be repaired, which facilitates reducing the use cost of the circuit breaker 100.

[0098] Based on the circuit breaker 100 provided in the above example, Figure 9 For the structural schematic diagram of the static contact assembly provided in the example of the present application, please refer to Figure 9 The part of the first wiring row 121 outside the first housing 111 is a first wiring segment, and the first wiring segment is provided with a mounting hole 125. The static contact assembly 120 can include an abutting piece, the abutting piece is arranged in the mounting hole 125, and in the case that the first wiring segment moves relative to the first housing 111, the abutting piece can abut to the outer wall of the first housing 111.

[0099] The first wiring segment refers to the part of the first wiring row 121 that extends to the outside of the first housing 111. The first wiring segment can be provided with a mounting hole 125. The mounting hole 125 can be a through hole, and the mounting hole 125 can also be a blind hole. The mounting hole 125 can be a threaded hole, and the mounting hole 125 can also be a light hole. Part of the abutting piece can be arranged in the mounting hole 125. The abutting piece can be a screw rod, a rivet or other structure, and at least one end of the abutting piece can protrude from the plane of the first wiring segment provided with the mounting hole 125, as long as it can abut to the outer wall of the first housing 111 in the case that the first wiring segment moves relative to the first housing 111.

[0100] In the use of the circuit breaker 100, the first wiring row 121 can be shaken relative to the first shell 111. In the example of the present application, an abutting piece is arranged on the first wiring segment, and in the case that the first wiring row 121 is shaken relative to the first shell 111, the abutting piece can abut to the first shell 111. Since the abutting piece can abut to the first shell 111, and the abutting piece is arranged on the first wiring segment, the abutment between the abutting piece and the first shell 111 can limit the amplitude of the shaking of the first wiring segment relative to the first shell 111.

[0101] Based on the circuit breaker 100 provided in the above example, the first shell 111 can be provided with a limiting hole, and part of the first wiring row 121 is arranged to protrude outside the first shell 111 through the limiting hole. The circuit breaker 100 comprises a matching clamping protrusion and a clamping groove, at least part of the clamping protrusion can be clamped to the clamping groove, the clamping protrusion is arranged on the first wiring row 121, and the clamping groove is arranged on the hole wall of the mounting hole 125. Alternatively, the clamping protrusion is arranged on the hole wall of the mounting hole 125, and the clamping groove is arranged on the first wiring row 121.

[0102] The part of the first wiring row 121 arranged to protrude outside the first shell 111 through the limiting hole can be the first wiring segment.

[0103] The number of clamping protrusions and clamping grooves can be equal, and the clamping protrusions and clamping grooves correspond one by one. The clamping protrusion can be provided with one or more.

[0104] The clamping protrusion can be arranged on one hole wall of the limiting hole, or the clamping protrusion can be arranged on multiple hole walls of the limiting hole, and in this case, the clamping groove is correspondingly arranged on the side wall of the first wiring row 121. Alternatively, the clamping protrusion can be arranged on one side wall of the first wiring row 121, or the clamping protrusion can be arranged on multiple side walls of the first wiring row 121, and in this case, the clamping groove is correspondingly arranged on one side wall of the limiting hole, which is not specifically limited in the example of the present application.

[0105] The clamping protrusion can be at least one of a boss, a column, a point, etc., and the shape of the clamping groove is matched with the shape of the clamping protrusion, which is not specifically limited in the example of the present application, as long as the clamping protrusion can be clamped to the clamping groove, and the cooperation between the clamping protrusion and the clamping groove can limit the relative position of the first wiring row 121 and the first shell 111.

[0106] In the example of the present application, on the basis that the first wiring strip 121 is fixedly installed on the first wiring strip 121 through the static contact body 124, the clamping protrusion and the clamping groove are arranged, one of the clamping protrusion and the clamping groove is arranged on the first wiring strip 121, and the other is arranged on the hole wall of the mounting hole 125, and the mounting hole 125 is arranged on the first shell 111. The mutual position of the first wiring strip 121 and the first shell 111 can be limited through the cooperation of the clamping protrusion and the clamping groove, and the amplitude of the shaking of the first wiring strip 121 relative to the first shell 111 is reduced.

[0107] Based on the circuit breaker 100 mentioned in the above example, the circuit breaker 100 can be provided with only the matched clamping groove and clamping protrusion, or only the abutting piece, or both the matched clamping groove and clamping protrusion and the abutting piece. The example of the present application does not make specific limitation on this.

[0108] Based on the static contact assembly 120 provided in the above example, the static contact assembly 120 can further include a second transition block, one side of the second transition block is connected to the side of the static contact body 124 facing the first wiring strip 121, and the other side of the second transition block is connected to the side wall of the first wiring strip 121. In the direction away from the static contact body 124, the cross-sectional area of the second transition block decreases.

[0109] The second transition block can be integrally formed with the first wiring strip 121, and the second transition block can also be connected together through welding, cooperation of grooves and protrusions, etc. The second transition block can also be integrally formed with the static contact body 124, and the second transition block can also be connected together with the static contact body 124 through welding, cooperation of grooves and protrusions, etc. The example of the present application does not make specific limitation on this.

[0110] In the example of the present application, by connecting the second transition block between the first wiring strip 121 and the static contact body 124, the amplitude of the shaking of the first wiring strip 121 relative to the static contact body 124 is reduced, and the use reliability of the static contact assembly 120 is ensured.

[0111] In addition, since the cross-sectional area of the second transition block decreases in the direction away from the static contact body 124, the current reaching the first wiring strip 121 via the static contact body 124 can gradually change, so that the possibility of the current flowing through the static contact body 124 to the first wiring strip 121 is low. The sudden change of the current is low, which is beneficial to ensure the use performance of the static contact assembly 120.

[0112] Based on the static contact assembly 120 provided in the above example, the static contact assembly 120 can further include a third transition block, one side of the third transition block is connected to one side of the static contact body 124 towards the first wiring row 121, and the other side of the third transition block is connected with the side wall of the first wiring row 121, and the cross-sectional area of the third transition block decreases in the direction away from the first wiring row 121.

[0113] The third transition block can be integrally formed with the static contact body 124, and the third transition block can also be connected with the static contact body 124 by welding, cooperation of groove and protrusion, etc. The third transition block can also be connected with the first wiring row 121 by welding, cooperation of groove and protrusion, etc. The examples of the present application do not make specific limitations in this regard.

[0114] The side wall of the first wiring row 121 connected with the third transition block can be adjacent to the side wall of the first wiring row 121 connected with the second transition block.

[0115] In the examples of the present application, by connecting the third transition block between the side wall of the first wiring row 121 and the static contact body 124, the amplitude of the first wiring row 121 relative to the static contact body 124 can be further reduced. 124 to ensure the use reliability of the static contact assembly 120.

[0116] In addition, since the cross-sectional area of the third transition block decreases in the direction away from the first wiring row 121, the current passing through the static contact body 124 to the first wiring row 121 can gradually change, so that the current passing through the static contact body 124 to the first wiring row 121 has a lower possibility of sudden change, which is beneficial to ensure the use performance of the static contact assembly 120.

[0117] In the examples of the present application, the static contact assembly 120 can only be provided with the second transition block, or only be provided with the third transition block, or be provided with both the second transition block and the third transition block.

[0118] Taking the circuit breaker 100 as an example, the first wiring row 121 can be indirectly connected with the external lead wire. Next, the way in which the first wiring row 121 is indirectly connected with the external lead wire will be described.

[0119] Based on the circuit breaker 100 provided in the above example, Figure 10 For the structure diagram of a first external row provided in the examples of the present application, please refer to Figures 1 to 4 and Figure 10 The housing assembly 110 can include a second housing 112, the second housing 112 is fixedly connected with the first housing 111, and the static contact assembly 120 further includes a first bridge contact 122 and a first external row 123.

[0120] The first bridge-type contact 122 can include a first clamping opening and a second clamping opening, the opening directions of the first clamping opening and the second clamping opening are opposite, and the first clamping opening clamps the first wiring row 121. The first external wiring row 123 is arranged in the second shell 112, and the first external wiring row 123 includes a first clamping segment 1232 and a second wiring segment 1231 connected with each other, the first clamping segment 1232 is arranged in the second shell 112, the second clamping opening clamps the first clamping segment 1232, at least part of the second wiring segment 1231 is arranged outside the second shell 112, the second wiring segment 1231 is connected with an external wiring, and the first clamping segment 1232 is substantially parallel to the first wiring row 121.

[0121] The manufacturing material of the second shell 112 and the first shell 111 can be the same or different, as long as the insulation performance of the second shell 112 is ensured.

[0122] The second shell 112 can be connected with the first shell 111 through thread connection, cooperation of a groove and a protrusion, buckle cooperation, riveting and the like, and the connection mode of the second shell 112 and the first shell 111 is not specifically limited in the present application.

[0123] The part of the first wiring row 121 extending out of the first shell 111 can be a first wiring segment, and the first wiring segment can be located in the second shell 112.

[0124] The first bridge-type contact 122 can include a mounting bracket and at least two groups of clamping pieces matched with each other. The two groups of clamping pieces matched with each other can cooperate to form a first clamping opening and a second clamping opening with opposite opening directions.

[0125] The opening size of the first clamping opening and the opening size of the second clamping opening can be adjustable, and the movement direction of the first clamping opening and the movement direction of the second clamping opening are substantially perpendicular to the first wiring row 121. In the case that the first wiring row 121 is substantially perpendicular to the static contact body 124, the movement direction of the first clamping opening and the movement direction of the second clamping opening are substantially parallel to the static contact body 124. The first clamping opening can clamp the first wiring row 121, and the second clamping opening can clamp the first external wiring row 123.

[0126] The manufacturing material of the first external wiring row 123 and the first wiring row 121 can be the same or different, as long as the first external wiring row 123 has good conductivity.

[0127] The first external connecting row 123 can be arranged in the second housing 112, so that part of the first external connecting row 123 is located outside the second housing 112. The first external connecting row 123 includes a first clamping section 1232 and a second connecting section 1231. The first clamping section 1232 can be located in the second housing 112, and the first bridge-type contact 122 can clamp the first clamping section 1232 through the second clamping opening. The first clamping section 1232 can be substantially parallel to the first connecting row 121.

[0128] The first clamping section 1232 can be substantially parallel to the first connecting row 121. It can be understood that the included angle between the first clamping section 1232 and the first connecting row 121 is greater than or equal to 0 degrees and less than 10 degrees.

[0129] The first clamping section 1232 can be substantially parallel to the static contact body 124. It can be understood that the included angle between the first clamping section 1232 and the static contact body 124 is greater than or equal to 0 degrees and less than 10 degrees.

[0130] At least part of the second connecting section 1231 can be arranged outside the second housing 112. The second connecting section 1231 arranged outside the second housing 112 can be electrically connected with the external connecting wire.

[0131] In the example of the present application, the first clamping opening can clamp the first connecting row 121, and the second clamping opening can clamp the first clamping section 1232. Since the first clamping section 1232 is part of the first external connecting row 123, the first clamping opening and the second clamping opening are arranged on the first bridge-type contact 122. Therefore, the electrical connection between the first connecting row 121 and the first external connecting row 123 can be realized through the first bridge-type contact 122. Since the first connecting row 121 is part of the static contact assembly 120, and the first external connecting row 123 can be connected with the external connecting wire, the electrical connection between the first connecting row 121 and the first external connecting row 123 can realize the electrical connection between the static contact assembly 120 and the external connecting wire.

[0132] In addition, in the example of the present application, the opening directions of the first clamping opening and the second clamping opening are opposite. By arranging the moving directions of the first clamping opening and the second clamping opening to be substantially perpendicular to the first connecting row 121, and arranging the first clamping section 1232 to be substantially parallel to the first connecting row 121, the cooperation between the first clamping opening and the first connecting section 1232 is more reliable, and the cooperation between the second clamping opening and the first clamping section 1232 is more reliable. Therefore, the connection reliability between the first clamping section 1232, the first bridge-type contact 122 and the first external connecting row 123 can be ensured.

[0133] Based on the circuit breaker 100 provided in the above example, the first clamping section and the second connecting section are coplanar, or please refer to Figure 10 The first clamping section 1232 cooperates with the second connecting section 1231 to form a third included angle.

[0134] The first clamping section 1232 can be coplanar with the second wiring section 1231. On the basis that the first clamping section 1232 is substantially parallel to the first wiring row 121, it can be understood that the second wiring section 1231 is also substantially parallel to the first wiring row 121, that is, the included angle between the first clamping section 1232 and the first wiring row 121 is greater than or equal to 0 degrees and less than 10 degrees.

[0135] By setting the first clamping section to be coplanar with the second wiring section, at least part of the second wiring section 1231 is exposed to the outside of the second housing 112 during use of the circuit breaker 100, so that the external air flows through a larger area of the second wiring section 1231, and thus the heat generated at the second wiring section 1231 exposed to the outside of the second housing 112 is easily taken away by the flowing external air, improving the heat dissipation efficiency of the second wiring section 1231, reducing the temperature rise of the stationary contact assembly 120 during use, and ensuring the use performance of the circuit breaker 100.

[0136] The first clamping section 1232 and the second wiring section 1231 can also cooperate to form a third included angle, which can be any one of a right angle, an acute angle, or an obtuse angle, which is not limited in the examples of the present application.

[0137] In the examples of the present application, the first clamping section can be set to be coplanar with the second wiring section according to customer needs, or the first clamping section 1232 and the second wiring section 1231 can be set to cooperate to form a third included angle, so that the circuit breaker 100 can be suitable for different scenarios and meet different needs of customers.

[0138] Based on the circuit breaker 100 provided in the above examples, Figure 11 For the structural schematic diagram of the first clamping section provided in the examples of the present application, please refer to Figure 11 The side of the first clamping section 1232 facing the second wiring section 1231 is provided with a first mounting groove 1234, and part of the second wiring section 1231 is clamped to the first mounting groove 1234, and / or the side of the second wiring section 1231 facing the first clamping section 1232 is provided with a second mounting groove, and part of the first clamping section 1232 is clamped to the second mounting groove.

[0139] In the case where the side of the first clamping section 1232 facing the second wiring section 1231 is provided with the first mounting groove 1234, the side of the second wiring section 1231 facing the first clamping section 1232 can be provided with a first limiting protrusion, which can extend into the first mounting groove 1234. The second wiring section 1231 can also directly extend into the first mounting groove 1234, and the specific connection mode of the second wiring section 1231 and the first clamping section 1232 is not limited in the examples of the present application.

[0140] The second wiring segment 1231 can be in interference fit with the first mounting groove 1234, and the second wiring segment 1231 and the groove wall of the first mounting groove 1234 can also be fixedly connected by bonding, welding or other ways, and the application examples do not make specific limitation on the connection mode between the second wiring segment 1231 and the groove wall of the first mounting groove 1234, as long as the connection reliability between the second wiring segment 1231 and the first clamping segment 1232 is ensured.

[0141] In the case where the second mounting groove is arranged on the side of the second wiring segment 1231 facing the first clamping segment 1232, the side of the first clamping segment 1232 facing the second wiring segment 1231 can be provided with a second limiting protrusion which can extend into the second mounting groove. The first clamping segment 1232 can also directly extend into the second mounting groove, and the application examples do not make limitation on the specific connection mode between the second wiring segment 1231 and the first clamping segment 1232.

[0142] The first clamping segment 1232 can be in interference fit with the second mounting groove, and the first clamping segment 1232 and the groove wall of the second mounting groove can also be fixedly connected by bonding, welding or other ways, and the application examples do not make specific limitation on the connection mode between the first clamping segment 1232 and the groove wall of the second mounting groove, as long as the connection reliability between the second wiring segment 1231 and the first clamping segment 1232 is ensured.

[0143] In the application examples, the first outer connecting row 123 can also be simultaneously provided with the first mounting groove 1234 and the second mounting groove, the first mounting groove 1234 is arranged on the second wiring segment 1231, and the second mounting groove is arranged on the first clamping segment 1232, and the clamping of the first mounting groove 1234 and the second mounting groove can realize the clamping of the second wiring segment 1231 and the first clamping segment 1232.

[0144] In the application examples, in the case where the first clamping segment 1232 is provided with the first mounting groove 1234, since the first mounting groove 1234 is arranged on the first clamping segment 1232 and part of the second wiring segment 1231 can extend into the first mounting groove 1234, the connection of the first clamping segment 1232 and the second wiring segment 1231 can be realized by the cooperation of the first mounting groove 1234 and the second wiring segment 1231.

[0145] In the case where the second wiring segment 1231 is provided with the second mounting groove, since the second mounting groove is arranged on the second wiring segment 1231 and part of the first clamping segment 1232 can extend into the second mounting groove, the connection of the first clamping segment 1232 and the second wiring segment 1231 can be realized by the cooperation of the second mounting groove and the first clamping segment 1232.

[0146] Based on the circuit breaker 100 provided in the above examples, please refer to Figure 11The first outer connecting row 123 can further include a first transition block 1233. One side of the first transition block 1233 is connected to the first clamping section 1232, and the other side of the first transition block 1233 is connected to the second connecting section 1231. In a direction away from the first clamping section 1232, the cross-sectional area of the first transition block 1233 decreases.

[0147] The first transition block 1233 can be integrally formed with the first clamping section 1232. The first transition block 1233 can also be connected to the first clamping section 1232 by welding, the cooperation of a groove and a protrusion, or the like. The first transition block 1233 can also be integrally formed with the second connecting section 1231. The first transition block 1233 can also be connected to the second connecting section 1231 by welding, the cooperation of a groove and a protrusion, or the like. The present application does not specifically limit this, and the present application only illustrates the fixed connection between the first transition block 1233 and the first clamping section 1232.

[0148] The first transition block 1233 is connected to the first side of the first clamping section 1232. The first side of the first clamping section 1232 can refer to the outer wall of the first clamping section 1232 that cooperates with the shell.

[0149] In the present application, by connecting the first transition block 1233 between the first side of the first clamping section 1232 and the second connecting section 1231, the amplitude of the shaking of the first clamping section 1232 relative to the second connecting section 1231 can be reduced, and the use reliability of the first outer connecting row 123 can be ensured.

[0150] In addition, since the cross-sectional area of the first transition block 1233 decreases in a direction away from the second connecting section 1231, the current that reaches the first clamping section 1232 via the second connecting section 1231 can gradually change, so that the possibility of the current that flows through the second connecting section 1231 to the first clamping section 1232 suddenly changing is low, which is beneficial to ensuring the use performance of the first outer connecting row 123.

[0151] Based on the circuit breaker 100 provided in the above example, please refer to Figures 1 to 4 The shell assembly 110 includes a second shell 112 that is fixedly connected to the first shell 111. The movable contact assembly 130 further includes a second bridge-type contact 132 and a second outer connecting row 133.

[0152] The second bridge contact 132 comprises a third clamping opening and a fourth clamping opening, the opening directions of the third clamping opening and the fourth clamping opening are opposite, and the third clamping opening clamps the second wiring row 131. The second external wiring row 133 is arranged in the second housing 112, and the second external wiring row 133 comprises a second clamping section and a second wiring section 1231 connected to each other. The second clamping section is arranged in the second housing 112, the third clamping opening clamps the second clamping section, and at least part of the second wiring section 1231 is arranged outside the second housing 112. The second wiring section 1231 is connected with the external wiring, and the second clamping section is substantially parallel to the second wiring row 131.

[0153] The second bridge contact 132 is similar in structure to the first bridge contact 122, the second external wiring row 133 is similar in structure to the first external wiring row 123, and the functions are similar. Details are not described herein.

[0154] Please refer to Figure 6 In the case that only the first wiring row 121 and the static contact body 124 cooperate to form the first clamping angle A, the movable contact assembly can further comprise a fourth bridge contact 136 and a fourth external wiring row 137. The fourth bridge contact 136 can connect the fourth external wiring row 137 and the fourth wiring row 135. The cooperation of the fourth bridge contact 136 and the fourth external wiring row 137 can be similar to the cooperation of the bridge contact and the external wiring row in the prior art, and details are not described herein.

[0155] Please refer to Figure 7 In the case that only the second wiring row 131 and the cooperation wall cooperate to form the second clamping angle, the static contact assembly can further comprise a third bridge contact 127 and a third external wiring row 128. The fourth bridge contact 136 can connect the third external wiring row 128 and the third wiring row 126. The cooperation of the third bridge contact 127 and the third external wiring row 128 can be similar to the cooperation of the bridge contact and the external wiring row in the prior art, and details are not described herein.

[0156] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A circuit breaker characterized by, The circuit breaker comprises: a housing assembly comprising a first housing; a stationary contact assembly fixedly installed on the housing; a movable contact assembly movably installed on the housing, the movable contact assembly being movable to a position in contact with the stationary contact assembly; wherein the stationary contact assembly comprises a stationary contact body and a first wiring strip connected with each other, the stationary contact body is fixedly installed on the first housing, the first wiring strip is fixedly connected with the stationary contact body, and the first wiring strip and the stationary contact body cooperatively form a first included angle; and / or the movable contact assembly comprises a movable contact body and a second wiring strip connected with each other, the movable contact body is movably connected to the second wiring strip, the second wiring strip is fixedly connected to a matching wall of the first housing, the second wiring strip and the matching wall cooperatively form a second included angle, and the matching wall refers to an inner wall of the first housing matched with the second wiring strip.

2. The circuit breaker of claim 1, wherein, The first wiring strip is substantially perpendicular to the stationary contact body.

3. The circuit breaker of claim 1, wherein, The first wiring strip is integrally arranged with the stationary contact body, or the first wiring strip is detachably connected with the stationary contact body.

4. The circuit breaker of claim 1, wherein, Part of the first wiring strip arranged outside the first housing is a first wiring segment, the first wiring segment is provided with a mounting hole, the stationary contact assembly comprises an abutting piece, the abutting piece is arranged in the mounting hole, and the abutting piece can abut to an outer wall of the first housing when the first wiring segment moves relative to the first housing.

5. The circuit breaker of claim 4, wherein, The first housing is provided with a limiting hole, and part of the first wiring strip is arranged in the limiting hole and exposed to the outside of the first housing; the circuit breaker comprises a matching clamping protrusion and a clamping groove, at least part of the clamping protrusion can be clamped into the clamping groove, the clamping protrusion is arranged on the first wiring strip, and the clamping groove is arranged on the hole wall of the mounting hole; or the clamping protrusion is arranged on the hole wall of the mounting hole, and the clamping groove is arranged on the first wiring strip.

6. The circuit breaker of any one of claims 1-4, wherein, The housing assembly comprises a second housing, the second housing is fixedly connected with the first housing, and the stationary contact assembly further comprises: a first bridge contact comprising a first clamping opening and a second clamping opening, the opening directions of the first clamping opening and the second clamping opening are opposite, the first clamping opening clamps the first wiring strip; a first external wiring strip arranged in the second housing, the first external wiring strip comprises a first clamping segment and a second wiring segment connected with each other, the first clamping segment is arranged in the second housing, the second clamping opening clamps the first clamping segment, at least part of the second wiring segment is arranged outside the second housing, the second wiring segment is connected with an external wiring, and the first clamping segment is substantially parallel to the first wiring strip.

7. The circuit breaker of claim 6, wherein, The first clamping segment and the second wiring segment are coplanar, or the first clamping segment and the second wiring segment cooperatively form a third included angle.

8. The circuit breaker according to claim 6, wherein a side of the first clamping segment facing the second wiring segment is provided with a first mounting groove, and part of the second wiring segment is clamped into the first mounting groove; and / or The second wiring segment is provided with a second mounting groove on a side facing the first clamping segment, and part of the first clamping segment is clamped to the second mounting groove.

9. The circuit breaker of claim 6, wherein, The first outer wiring harness further comprises a first transition block, one side of the first transition block is connected to the first clamping segment, and the other side of the first transition block is connected to the second wiring segment, and the cross-sectional area of the first transition block decreases in a direction away from the first clamping segment.

10. The circuit breaker of claim 6, wherein, The housing assembly comprises a second housing fixedly connected to the first housing, and the movable contact assembly further comprises: The second bridge-type contact comprises a third clamping opening and a fourth clamping opening, the opening directions of the third clamping opening and the fourth clamping opening are opposite, and the third clamping opening clamps the second wiring harness; The second outer wiring harness is arranged in the second housing, the second outer wiring harness comprises a second clamping segment and a second wiring segment connected to each other, the second clamping segment is arranged in the second housing, the third clamping opening clamps the second clamping segment, at least part of the second wiring segment is arranged outside the second housing, the second wiring segment is connected to an external wire, and the second clamping segment and the second wiring harness are substantially parallel.

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