1P + N circuit breaker

Abstract

The utility model provides a 1P + N circuit breaker which comprises a circuit breaker body and an additional device, and the additional device is arranged on one side of the circuit breaker body. The circuit breaker body comprises a shell, a first handle and a second handle. The first handle comprises a first rotating part and a first limiting part, the first rotating part is located on the inner side of the shell, the first limiting part is located on the outer side of the shell, and the first rotating part is connected with the first limiting part. The second handle comprises a second rotating part and a second limiting part, the second rotating part and the second limiting part are both located on the inner side of the shell, and the second rotating part is connected with the second limiting part. The additional device comprises a third handle, and the third handle is located on the outer side of the shell. The second rotating part is connected with the first rotating part in the first direction, and the third handle is connected with the first limiting part in the first direction. The first direction is the direction of the circuit breaker body towards the additional device. Therefore, the first handle, the second handle and the third handle rotate synchronously, and linkage of the additional device and the circuit breaker body is realized.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a 1P+N circuit breaker. Background Art

[0002] 1P+N circuit breaker has short circuit protection, overload protection and leakage protection functions. In addition, by adding additional devices to the circuit breaker body and linking the additional devices with the circuit breaker body, the 1P+N circuit breaker can have more functions.

[0003] The circuit breaker body includes a circuit breaker handle and a leakage protection handle, and the additional device includes an additional device handle, which needs to be linked with the circuit breaker handle. The leakage protection handle is located between the circuit breaker handle and the additional device handle, so that the additional device cannot be directly linked with the circuit breaker body. Utility Model Content

[0004] The present application provides a 1P+N circuit breaker, which realizes the linkage between the circuit breaker body and the additional device.

[0005] In a first aspect, the present application provides a 1P+N circuit breaker, comprising: a circuit breaker body and an additional device, wherein the additional device is arranged on one side of the circuit breaker body. The circuit breaker body comprises a housing, a first handle and a second handle. The first handle comprises a first rotating portion and a first limiting portion, wherein the first rotating portion is located inside the housing, the first limiting portion is located outside the housing, and the first rotating portion is connected to the first limiting portion. The second handle comprises a second rotating portion and a second limiting portion, wherein the second rotating portion and the second limiting portion are both located inside the housing, and the second rotating portion is connected to the second limiting portion. The additional device comprises a third handle, wherein the third handle is located outside the housing. The second rotating portion is connected to the first rotating portion along a first direction, and the third handle is connected to the first limiting portion along the first direction. The first direction is the direction of the circuit breaker body toward the additional device.

[0006] The 1P+N circuit breaker provided by the first aspect includes a circuit breaker body and an additional device arranged on one side of the circuit breaker body. The circuit breaker body includes a shell, a first handle and a second handle. The first rotating part of the first handle, the second rotating part of the second handle, and the second limiting part of the second handle are all located on the inner side of the shell, so that the second rotating part is connected to the first rotating part along the first direction. The direction of the circuit breaker body toward the additional device is the first direction. The first limiting part of the first handle and the third handle arranged on the additional device are all located outside the shell, so that the third handle is connected to the first limiting part along the first direction. Thereby, the first handle, the second handle and the third handle are rotated synchronously, so that the additional device and the circuit breaker body are linked, so that the 1P+N circuit breaker has more functions.

[0007] In a possible design, the first rotating part is provided with a connecting shaft, and the second rotating part is provided with a countersunk hole. Alternatively, the first rotating part is provided with a countersunk hole, and the second rotating part is provided with the connecting shaft. The connecting shaft sleeve is arranged in the countersunk hole.

[0008] Based on the description of the above embodiment, the connecting shaft sleeve of the first rotating part is arranged in the countersunk hole of the second rotating part. Alternatively, the connecting shaft sleeve of the second rotating part is arranged in the countersunk hole of the first rotating part. The connecting shaft is clamped in the countersunk hole so that the first rotating part can rotate synchronously with the second rotating part, thereby realizing the linkage of the first handle and the second handle.

[0009] In a possible design, the cross section of the connecting shaft in the first direction is a polygon. The cross section of the counterbore in the first direction matches the cross section of the connecting shaft in the first direction.

[0010] In a possible design, a first clamping structure is provided on the connecting shaft, and a second clamping structure is provided in the counterbore. The first clamping structure and the second clamping structure are clamped to each other.

[0011] In a possible design, there is an interference fit between the connecting shaft and the counterbore.

[0012] In summary, the operator can select the above three matching modes according to needs, so that the first rotating shaft and the second rotating shaft cannot rotate relative to each other, thereby realizing synchronous rotation of the first rotating part and the second rotating part.

[0013] In a possible design, the first limiting portion is provided with an assembly hole, the third handle is provided with a linkage rod, and the linkage rod is sleeved in the assembly hole.

[0014] Based on the description of the above embodiment, the linkage rod of the third handle is sleeved in the assembly hole of the first limiting part, so that the linkage rod is clamped in the assembly hole, so that the first limiting part can rotate synchronously with the third handle, thereby realizing the linkage between the first handle and the third handle.

[0015] In a possible design, a first limiting step and a second limiting step are provided in the housing. The second limiting portion is located between the first limiting step and the second limiting step. The first limiting step and the second limiting step are both provided on a rotation track of the second limiting portion.

[0016] Based on the description of the above embodiment, the second limiting portion, the first limiting step and the second limiting step are all arranged in the housing. The first limiting step and the second limiting step are used to limit the rotation range of the second limiting portion, thereby limiting the rotation range of the second handle.

[0017] In a possible design, the shell includes a base; the first rotating part is arranged on the first side of the base along the first direction, and the second rotating part is arranged on the second side of the base along the first direction; a through hole is provided on the base; and the first rotating part is connected to the second rotating part through the through hole.

[0018] Based on the description of the above embodiment, the first rotating part is arranged on the first side of the base along the first direction, and the second rotating part is arranged on the second side of the base along the first direction, so as to increase the safety and reliability of the circuit breaker. A through hole is provided on the base, and the first rotating part is connected to the second rotating part through the through hole to realize the linkage between the first rotating part and the second rotating part.

[0019] In a possible design, the shell includes a first side cover, which is buckled on the second side of the base along the first direction; the first rotating part and the second rotating part are both mounted on the handle shaft; the handle shaft passes through the through hole, and one end of the handle shaft is connected to the first side cover.

[0020] Based on the description of the above embodiment, one end of the handle shaft is connected to the first side cover, and the first rotating part and the second rotating part are both sleeved on the handle shaft, so as to realize the coaxial assembly of the first rotating part and the second rotating part in the circuit breaker body, so as to realize the assembly between the connecting shaft and the countersunk hole, thereby realizing the linkage between the first handle and the second handle.

[0021] In a possible design, the housing includes a second side cover, and the second side cover is buckled on the first side of the base along the first direction. A boss is provided on the second side cover, and the first rotating part abuts against the boss.

[0022] Based on the description of the above embodiment, the first rotating portion abuts against the second side cover to prevent the first handle and the second handle from shaking along the length direction of the handle shaft during rotation, thereby affecting the transmission efficiency between the first handle and the second handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic structural diagram of a 1P+N circuit breaker provided in an embodiment of the present application.

[0025] Figure 2 for Figure 1The view exploded in the first direction.

[0026] Figure 3 A schematic diagram of a partial structure of a circuit breaker body provided in an embodiment of the present application.

[0027] Figure 4 for Figure 3 The view exploded in the first direction.

[0028] Figure 5 A schematic diagram of the assembly of a first handle and a second handle provided in an embodiment of the present application.

[0029] Figure 6 A schematic structural diagram of a first handle provided in an embodiment of the present application.

[0030] Figure 7 A schematic structural diagram of a second handle provided in an embodiment of the present application.

[0031] Figure 8 for Figure 2 Magnified view of section A.

[0032] Fig. 9 for Figure 2 Front view of .

[0033] Fig.10 A schematic structural diagram of a circuit breaker body exploded along a first direction provided in an embodiment of the present application.

[0034] Fig.11 A schematic structural diagram of a first side cover provided in an embodiment of the present application.

[0035] Fig.12 A schematic structural diagram of a second side cover provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 100-1P+N circuit breaker;

[0038] 1- Circuit breaker body;

[0039] 11-housing; 111-base; 112-first side cover; 113-second side cover; 1131-boss;

[0040] 114-first limiting step; 115-second limiting step;

[0041] 12-first handle; 121-first rotating part; 1211-connecting shaft; 122-first limiting part; 1221-assembly hole;

[0042] 13-second handle; 131-second rotating part; 1311-counter hole; 132-second limiting part;

[0043] 14-handle shaft;

[0044] 2-additional device; 21-third handle; 211-linkage rod;

[0045] X - first direction. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0048] The terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0052] In addition, the expressions of the indicated directions, such as the X direction, the Y direction, and the Z direction, used to illustrate the operation and construction of the components of the present embodiment are not absolute but relative, and although these indications are appropriate when the components of the battery pack are in the positions shown in the figures, when these positions change, these directions should be interpreted differently to correspond to the changes.

[0053] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0054] In the description of the present application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two groups (including two).

[0055] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member. The physical connection may also be a detachable connection, such as a mutual snap-on or snap-on connection. The physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, i.e. a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements. In addition to signal connection through a circuit, a signal connection may also refer to signal connection through a media medium, such as a radio wave. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to the specific circumstances.

[0056] The 1P+N circuit breaker may include a circuit breaker body and an additional device.

[0057] The circuit breaker body may include a circuit breaker system and a leakage protection system. The circuit breaker system is used to protect the power circuit from overload, and the leakage protection system is used to protect the power circuit from leakage.

[0058] The additional device is linked with the circuit breaker system, so that the additional device can remotely control the power circuit, thereby making the 1P+N circuit breaker have more functions.

[0059] Specifically, the leakage protection system is provided with a first handle, the circuit breaker system is provided with a second handle, and the additional device is provided with a third handle. The third handle is connected to the second handle to realize the linkage between the additional device and the circuit breaker system.

[0060] When the first handle is disposed between the second handle and the third handle, the third handle cannot be directly connected to the first handle, so that the additional device cannot be directly linked to the circuit breaker system.

[0061] Based on the above content, the embodiment of the present application provides a 1P+N circuit breaker, which can realize the linkage between the additional device and the circuit breaker body. The circuit breaker body and the 1P+N circuit breaker provided in the embodiment of the present application are described in detail below in conjunction with the drawings of the specification.

[0062] like Figure 1 As shown, the 1P+N circuit breaker 100 provided in the embodiment of the present application includes: a circuit breaker body 1 and an additional device 2, wherein the additional device 2 is arranged on one side of the circuit breaker body 1. Figure 2 and Figure 3 As shown, the circuit breaker body 1 includes a housing 11, a first handle 12 and a second handle 13. Figure 4 As shown, the first handle 12 includes a first rotating portion 121 and a first limiting portion 122. The first rotating portion 121 is located inside the housing 11, and the first limiting portion 122 is located outside the housing 11. The first rotating portion 121 is connected to the first limiting portion 122. The second handle 13 includes a second rotating portion 131 and a second limiting portion 132. The second rotating portion 131 and the second limiting portion 132 are both located inside the housing 11, and the second rotating portion 131 is connected to the second limiting portion 132. Figure 2 As shown, the attachment 2 includes a third handle 21, which is located outside the housing 11. The second rotating portion 131 is connected to the first rotating portion 121 along the first direction X, and the third handle 21 is connected to the first limiting portion 122 along the first direction X. The first direction X is the direction in which the circuit breaker body 1 faces the attachment 2.

[0063] The circuit breaker may include a 1P+N circuit breaker 100 and a 2P circuit breaker. Among them, the 1P+N circuit breaker 100 is a single-pole plus neutral line circuit breaker, which is suitable for a single-phase circuit and can disconnect the live wire and the neutral line at the same time. The 2P circuit breaker is a double-pole circuit breaker, which is suitable for a double-phase circuit and can disconnect two live wires at the same time. In summary, one pole of the 1P+N circuit breaker 100 has a circuit breaking function, and the other pole has a leakage protection function. Both poles of the 2P circuit breaker have a circuit breaking function.

[0064] Furthermore, the 1P+N circuit breaker 100 may include a first handle 12 and a second handle 13. The first handle 12 is used to control the leakage protection system to implement the leakage protection function, and the second handle 13 is used to control the circuit breaker system to implement the circuit breaking function. The 2P circuit breaker may include two second handles 13.

[0065] Specifically, Figure 3 As shown, the first handle 12 includes a first rotating portion 121 and a first limiting portion 122, and the second handle 13 includes a second rotating portion 131 and a second limiting portion 132. The first rotating portion 121 is used to control the rotation of the first handle 12. The second rotating portion 131 is used to control the rotation of the second handle 13. The first limiting portion 122 is used to limit the rotation range of the first handle 12. The second limiting portion 132 is used to limit the rotation range of the second handle 13.

[0066] Furthermore, the leakage protection system and the circuit breaker system are arranged inside the housing 11 of the 1P+N circuit breaker 100 and are combined. Figure 2 and Figure 3 It can be seen that the first rotating part 121 and the second rotating part 131 are also arranged inside the housing 11 of the 1P+N circuit breaker 100. The first rotating part 121 is connected to the leakage protection system so that the first rotating part 121 and the leakage protection system work together. The second rotating part 131 is connected to the circuit breaker system so that the second rotating part 131 and the circuit breaker work together. The housing 11 can be a protective cover with a receiving cavity. For example, Figure 2 The housing 11 may include a base 111 , a first side cover 112 , and a second side cover 113 .

[0067] Specifically, Figure 4 As shown, the first limiter 122 is connected to the first rotating part 121, so that the leakage protection system, the first rotating part 121 and the first limiter 122 rotate together. The first limiter 122 is arranged outside the housing 11, and the operator controls the rotation range of the first limiter 122 to limit the action range of the leakage protection system. The connection method between the first limiter 122 and the first rotating part 121 is not limited. For example, the first limiter 122 and the first rotating part 121 are an integrated structure.

[0068] Specifically, Figure 4 As shown, the second limiting portion 132 is connected to the second rotating portion 131, so that the circuit breaker system, the second rotating portion 131 and the second limiting portion 132 rotate together. The first limiting portion 122 is arranged on the outside of the housing 11, and the second limiting portion 132 is arranged on the inside of the housing 11, so that the 1P+N circuit breaker 100 can be seen as one limiting portion in appearance. The 2P circuit breaker includes two handles, and the limiting portions of the two handles are both arranged on the outside of the housing 11, so that the 2P circuit breaker can be seen as two limiting portions in appearance. As a result, the 1P+N circuit breaker 100 and the 2P circuit breaker have an intuitive difference in appearance, avoiding users from choosing the wrong product due to similar appearance.

[0069] Furthermore, the second rotating portion 131 and the first rotating portion 121 are both located inside the housing 11. The second rotating portion 131 is connected to the first rotating portion 121 along the first direction X, so that the second handle 13 and the first handle 12 rotate synchronously, so that the circuit breaker system and the leakage protection system can operate together. The direction of the circuit breaker body 1 toward the additional device 2 is the first direction X.

[0070] For example, when there is an overload current in the power circuit where the 1P+N circuit breaker 100 in the embodiment of the present application is located, the circuit breaker system is actuated, the circuit breaker system drives the second handle 13 to rotate, the second handle 13 rotates together with the first handle 12, and the second handle 13 drives the first limit portion 122 of the first handle 12 to rotate to the first position. The first limit portion 122 is located at the first position to indicate that the 1P+N circuit breaker 100 is in the disconnected state.

[0071] For example, when the 1P+N circuit breaker 100 in the embodiment of the present application needs to be converted from the disconnected state to the closed state, the operator controls the first limit portion 122 of the first handle 12 to rotate to the second position, and the second handle 13 rotates together with the first handle 12, and the second handle 13 drives the circuit breaker system to operate to close the 1P+N circuit breaker 100. The first limit portion 122 is located at the second position to indicate that the 1P+N circuit breaker 100 is in the closed state.

[0072] Exemplarily, when there is leakage current in the 1P+N circuit breaker 100 in the embodiment of the present application, the leakage protection system is activated, the leakage protection system drives the first handle 12 to rotate, the second handle 13 rotates together with the first handle 12, and the second handle 13 drives the circuit breaker system to operate, so that the 1P+N circuit breaker 100 completes the disconnection and plays a role in protecting the power circuit.

[0073] Furthermore, if Figure 1 and Figure 2As shown, the additional device 2 may include a third handle 21. The third handle 21 and the first limit portion 122 are both located outside the housing 11. And the third handle 21 is connected to the first limit portion 122 along the first direction X, so that the third handle 21 rotates synchronously with the first handle 12. In combination with the above content, it can be seen that the first handle 12 rotates synchronously with the second handle 13, and the first handle 12 rotates synchronously with the third handle 21, so the third handle 21 rotates synchronously with the second handle 13, so that the additional device 2 is linked with the circuit breaker system, so that the additional device 2 can remotely control the power circuit where the 1P+N circuit breaker 100 in the embodiment of the present application is located. Thereby, the linkage between the additional device 2 and the circuit breaker body 1 is realized, so that the 1P+N circuit breaker 100 has more functions. Among them, the first direction X is the side of the circuit breaker body 1 facing the additional device 2.

[0074] In summary, the 1P+N circuit breaker 100 provided in the embodiment of the present application includes: a circuit breaker body 1, and an additional device 2 arranged on one side of the circuit breaker body 1. The circuit breaker body 1 includes a housing 11, a first handle 12, and a second handle 13. The first rotating portion 121 of the first handle 12, the second rotating portion 131 of the second handle 13, and the second limiting portion 132 of the second handle 13 are all located inside the housing 11, so that the second rotating portion 131 is connected to the first rotating portion 121 along the first direction X. The direction of the circuit breaker body 1 toward the additional device 2 is the first direction X. The first limiting portion 122 of the first handle 12, and the third handle 21 arranged on the additional device 2 are all located outside the housing 11, so that the third handle 21 is connected to the first limiting portion 122 along the first direction X. Thus, the first handle 12, the second handle 13 and the third handle 21 are rotated synchronously, so that the additional device 2 and the circuit breaker body 1 are linked, so that the 1P+N circuit breaker 100 has more functions.

[0075] In some embodiments, a leakage indication device (not shown in the figure) is provided in the circuit breaker body 1 .

[0076] The circuit breaker reasons of the 1P+N circuit breaker 100 in the embodiment of the present application may include the following two situations:

[0077] In the first case, when there is an overload current in the power circuit where the 1P+N circuit breaker 100 is located, the circuit breaker system is linked with the leakage protection system, and the first limit portion 122 of the first handle 12 rotates to the first position to enable the 1P+N circuit breaker 100 to complete the disconnection, thereby protecting the power circuit.

[0078] In the second case, when leakage current exists in the 1P+N circuit breaker 100, the leakage protection system is linked with the circuit breaker system, and the first limit portion 122 of the first handle 12 rotates to the first position to enable the 1P+N circuit breaker 100 to complete the disconnection and protect the power circuit.

[0079] In the above two situations, whether the 1P+N circuit breaker 100 is in the disconnected state is determined according to a limit portion arranged outside the housing 11 rotating to the first position.

[0080] Furthermore, a leakage indication device is provided in the 1P+N circuit breaker 100. When leakage current exists in the 1P+N circuit breaker 100, the leakage indication device is activated and a mark is generated on the outside of the housing 11. When an overload current exists in the power circuit where the 1P+N circuit breaker 100 is located, the leakage indication device does not operate. Thus, the circuit breaking cause of the circuit breaker can be determined, which facilitates the operator to inspect and maintain the 1P+N circuit breaker 100.

[0081] Based on the description of the above embodiment, the 1P+N circuit breaker 100 is provided with a leakage indication device for determining the circuit breaking cause of the circuit breaker, so as to facilitate operators to inspect and maintain the 1P+N circuit breaker 100.

[0082] It should be noted here that, in order to make the expression concise and clear, the term "circuit breaker" is used hereinafter to refer to the 1P+N circuit breaker 100 in the embodiment of the present application.

[0083] In some embodiments, Figure 5-Figure 7 As shown, the first rotating part 121 is provided with a connecting shaft 1211, and the second rotating part 131 is provided with a countersunk hole 1311. Alternatively, the first rotating part 121 is provided with a countersunk hole 1311, and the second rotating part 131 is provided with a connecting shaft 1211. The connecting shaft 1211 is sleeved in the countersunk hole 1311.

[0084] The connecting shaft 1211 is sleeved in the countersunk hole 1311, so that the connecting shaft 1211 is clamped in the countersunk hole 1311, so that the first rotating part 121 can rotate synchronously with the second rotating part 131, thereby realizing the linkage of the first handle 12 and the second handle 13. Specifically, the connection mode of the connecting shaft 1211 and the countersunk hole 1311 belongs to the hole-shaft connection, and the advantages of the hole-shaft connection include: simple and easy to use, stable and reliable, and high transmission efficiency.

[0085] Specifically, the connecting shaft 1211 can be arranged on the first rotating part 121, or on the second rotating part 131. When the connecting shaft 1211 is arranged on the first transmission part, the countersunk hole 1311 is correspondingly arranged on the second rotating part 131. When the connecting shaft 1211 is arranged on the second rotating part 131, the countersunk hole 1311 is correspondingly arranged on the first rotating part 121.

[0086] Based on the description of the above embodiment, the connecting shaft 1211 of the first rotating part 121 is sleeved in the countersunk hole 1311 of the second rotating part 131. Alternatively, the connecting shaft 1211 of the second rotating part 131 is sleeved in the countersunk hole 1311 of the first rotating part 121. The connecting shaft 1211 is clamped in the countersunk hole 1311, so that the first rotating part 121 can rotate synchronously with the second rotating part 131, thereby realizing the linkage of the first handle 12 and the second handle 13.

[0087] There are many ways to match the connecting shaft 1211 with the counterbore 1311. Three possible structural forms will be exemplified below, but they do not constitute a limitation on the technical solution of the present application.

[0088] In the first matching mode, the cross section of the connecting shaft 1211 in the first direction X is a polygon. The cross section of the counterbore 1311 in the first direction X is adapted to the cross section of the connecting shaft 1211 in the first direction X.

[0089] A polygon is a closed figure composed of multiple straight line segments. A polygon can include multiple interior angles and multiple exterior angles.

[0090] Specifically, the cross section of the connecting shaft 1211 in the first direction X may include multiple external angles. The cross section of the counterbore 1311 in the first direction X may include multiple internal angles. The connecting shaft 1211 is sleeved in the counterbore 1311, and the multiple external angles of the connecting shaft 1211 correspond to the multiple internal angles of the counterbore 1311 one by one, so that the connecting shaft 1211 is clamped in the counterbore 1311, so that the first rotating shaft and the second rotating shaft cannot rotate relative to each other, thereby realizing the synchronous rotation of the first rotating part 121 and the second rotating part 131.

[0091] For example, Figure 6 and Figure 7 As shown, the cross section of the connecting shaft 1211 in the first direction X is a square. The connecting shaft 1211 with a square cross section includes four outer corners. The cross section of the countersunk hole 1311 in the first direction X is a square. The countersunk hole 1311 with a square cross section includes four inner corners. The connecting shaft 1211 is sleeved in the countersunk hole 1311, and the four outer corners of the connecting shaft 1211 correspond to the four inner corners of the countersunk hole 1311 one by one, so that the connecting shaft 1211 is clamped in the countersunk hole 1311.

[0092] In the second matching mode, a first clamping structure is provided on the connecting shaft 1211, and a second clamping structure is provided in the counterbore 1311. The first clamping structure and the second clamping structure are clamped to each other.

[0093] Specifically, the first clamping structure may be a protrusion structure provided on the connecting shaft 1211 , and the second clamping structure may be a groove structure provided in the counterbore 1311 .

[0094] Alternatively, the first clamping structure may be a groove structure provided on the connecting shaft 1211 , and the second clamping structure may be a protrusion structure provided in the counterbore 1311 .

[0095] The protrusion structure is embedded in the groove structure, so that the first rotating shaft and the second rotating shaft cannot rotate relative to each other, thereby achieving synchronous rotation of the first rotating part 121 and the second rotating part 131 .

[0096] The third matching mode is that the connecting shaft 1211 and the counterbore 1311 are in interference fit.

[0097] Specifically, interference fit means that during the assembly process, the size of certain components is larger than the size of their mating components to ensure that the components and mating components can form a tight fit.

[0098] The connecting shaft 1211 and the counterbore 1311 are in interference fit, so that the first rotating shaft and the second rotating shaft cannot rotate relative to each other, thereby achieving synchronous rotation of the first rotating part 121 and the second rotating part 131 .

[0099] In summary, the operator can select the above three matching modes according to needs, so that the first rotating shaft and the second rotating shaft cannot rotate relative to each other, thereby achieving synchronous rotation of the first rotating part 121 and the second rotating part 131 .

[0100] In some embodiments, Figure 8 and Figure 2 As shown, the first limiting portion 122 is provided with an assembly hole 1221. The third handle 21 is provided with a linkage rod 211. The linkage rod 211 is sleeved in the assembly hole 1221.

[0101] The linkage rod 211 is sleeved in the assembly hole 1221, so that the linkage rod 211 is clamped in the assembly hole 1221, so that the first limit portion 122 can rotate synchronously with the third handle 21, thereby realizing the linkage of the first handle 12 and the third handle 21. Specifically, the connection mode of the linkage rod 211 and the assembly hole 1221 belongs to the hole-shaft connection, and the advantages of the hole-shaft connection include: simple and easy to use, stable and reliable, and high transmission efficiency.

[0102] Based on the description of the above embodiment, the linkage rod 211 of the third handle 21 is sleeved in the assembling hole 1221 of the first limiting portion 122, so that the linkage rod 211 is clamped in the assembling hole 1221, so that the first limiting portion 122 can rotate synchronously with the third handle 21, thereby realizing the linkage between the first handle 12 and the third handle 21.

[0103] In some embodiments, Fig. 9As shown, a first limiting step 114 and a second limiting step 115 are provided in the housing 11, and the second limiting portion 132 is located between the first limiting step 114 and the second limiting step 115. Both the first limiting step 114 and the second limiting step 115 are provided on the rotation track of the second limiting portion 132.

[0104] The second limiting portion 132 , the first limiting step 114 and the second limiting step 115 are all disposed in the housing 11 . The first limiting step 114 and the second limiting step 115 are used to limit the rotation range of the second limiting portion 132 .

[0105] Specifically, the second limiting portion 132 is located between the first limiting step 114 and the second limiting step 115. And the first limiting step 114 and the second limiting step 115 are both arranged on the rotation track of the second limiting portion 132. When the second limiting portion 132 rotates in the direction of the first limiting step 114 until the second limiting portion 132 abuts against the first limiting step 114, the second limiting portion 132 can no longer rotate in the direction of the first limiting step 114, and the second limiting portion 132 is limited in rotation in the direction of the first limiting step 114. When the second limiting portion 132 rotates in the direction of the second limiting step 115 until the second limiting portion 132 abuts against the second limiting step 115, the second limiting portion 132 can no longer rotate in the direction of the second limiting step 115, and the second limiting portion 132 is limited in rotation in the direction of the second limiting step 115.

[0106] Based on the description of the above embodiment, the second limiting portion 132, the first limiting step 114 and the second limiting step 115 are all disposed in the housing 11. The first limiting step 114 and the second limiting step 115 are used to limit the rotation range of the second limiting portion 132, thereby limiting the rotation range of the second handle 13.

[0107] In some embodiments, the shell 11 may include a base 111; the first rotating portion 121 is arranged on a first side of the base 111 along the first direction X, and the second rotating portion 131 is arranged on a second side of the base 111 along the first direction X; a through hole (not shown in the figure) is provided on the base 111; the first rotating portion 121 is connected to the second rotating portion 131 through the through hole.

[0108] Specifically, Figure 2 and Fig.10As shown, the housing 11 may include a base 111. The first rotating portion 121 is disposed on a first side of the base 111 along a first direction X, and the second rotating portion 131 is disposed on a second side of the base 111 along the first direction X. In other words, the base 111 isolates the leakage protection system controlled by the first rotating portion 121 from the circuit breaker system controlled by the second rotating portion 131. This is used to prevent a short circuit between the leakage protection system and the circuit breaker system, thereby increasing the safety and reliability of the circuit breaker.

[0109] In order to prevent short circuit between the leakage protection system and the circuit breaker system, a through hole is provided on the base 111 , and the first rotating part 121 is connected to the second rotating part 131 through the through hole to realize the linkage between the first rotating part 121 and the second rotating part 131 .

[0110] Based on the description of the above embodiment, the first rotating part 121 is arranged on the first side of the base 111 along the first direction X, and the second rotating part 131 is arranged on the second side of the base 111 along the first direction X. It is used to increase the safety and reliability of the circuit breaker. A through hole is provided on the base 111, and the first rotating part 121 is connected to the second rotating part 131 through the through hole to realize the linkage of the first rotating part 121 and the second rotating part 131.

[0111] In some embodiments, Fig.10 and Fig.11 As shown, the housing 11 may include a first side cover 112, and the first side cover 112 is buckled on the second side of the base 111 along the first direction X. The first rotating portion 121 and the second rotating portion 131 are both sleeved on the handle shaft 14. The handle shaft 14 passes through the through hole, and one end of the handle shaft 14 is connected to the first side cover 112.

[0112] Specifically, Figure 2 and Fig.10 As shown, the housing 11 may include a base 111, a first side cover 112, and a second side cover 113. The first side cover 112 is buckled on the second side of the base 111 along the first direction X, and the first side cover 112 and the base 111 form a closed first accommodating cavity. In combination with the above content, it can be seen that the second rotating part 131 is located in the first accommodating cavity. The second side cover 113 is buckled on the first side of the base 111 along the first direction X, and the second side cover 113 and the base 111 form a closed second accommodating cavity. In combination with the above content, it can be seen that the second rotating part 131 is located in the second accommodating cavity. The first rotating part 121 and the second rotating part 131 are separated by the base 111.

[0113] The handle shaft 14 passes through the through hole provided on the base 111, so that the first rotating part 121 and the second rotating part 131 are both sleeved on the handle shaft 14. One end of the handle shaft 14 is connected to the first side cover 112, so that the first rotating part 121 and the second rotating part 131 are fixed to the first side cover 112 through the handle shaft 14. The handle shaft 14 passes through the through hole provided on the base 111, so that the first rotating part 121 and the second rotating part 131 are coaxially assembled in the circuit breaker body 1, so as to facilitate the assembly between the connecting shaft 1211 and the counterbore 1311, thereby realizing the linkage of the first handle 12 and the second handle 13.

[0114] Specifically, a portion of the handle shaft 14 is located in the first accommodating cavity, and is used to sleeve the second rotating portion 131. Another portion of the handle shaft 14 is located in the second accommodating cavity, and is used to sleeve the first rotating portion 121.

[0115] Based on the description of the above embodiment, one end of the handle shaft 14 is connected to the first side cover 112, and the first rotating part 121 and the second rotating part 131 are both sleeved on the handle shaft 14, so as to realize the coaxial assembly of the first rotating part 121 and the second rotating part 131 in the circuit breaker body 1, so as to facilitate the assembly between the connecting shaft 1211 and the countersunk hole 1311, thereby realizing the linkage of the first handle 12 and the second handle 13.

[0116] In some embodiments, Fig.11 and Fig.12 As shown, the housing 11 may include a second side cover 113 , and the second side cover 113 is buckled on the first side of the base 111 along the first direction X. A boss 1131 is provided on the second side cover 113 , and the first rotating portion 121 abuts against the boss 1131 .

[0117] Abutment refers to the close contact or connection between two parts, which can improve the stability of the parts.

[0118] Specifically, a portion of the handle shaft 14 is located in the first accommodating cavity, and is used to sleeve the second rotating portion 131. Another portion of the handle shaft 14 is located in the second accommodating cavity, and is used to sleeve the first rotating portion 121. One end of the handle shaft is connected to the first side cover 112, and the first rotating portion 121 abuts against the boss 1131 of the second side cover 113, so that the first side cover 112 and the second side cover 113 clamp the first rotating shaft and the second rotating shaft in the first direction X, so as to prevent the first handle 12 and the second handle 13 from shaking during the rotation process.

[0119] Based on the description of the above embodiment, the first rotating portion 121 abuts against the second side cover 113 to prevent the first handle 12 and the second handle 13 from shaking along the length direction of the handle shaft 14 during rotation, thereby affecting the transmission efficiency between the first handle 12 and the second handle 13.

[0120] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0121] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A 1P+N circuit breaker, characterized in that: include: A circuit breaker body and an additional device, wherein the additional device is arranged on one side of the circuit breaker body; The circuit breaker body comprises a housing, a first handle and a second handle; The first handle comprises a first rotating portion and a first limiting portion, the first rotating portion is located inside the shell, the first limiting portion is located outside the shell, and the first rotating portion is connected to the first limiting portion; The second handle comprises a second rotating portion and a second limiting portion, the second rotating portion and the second limiting portion are both located inside the housing, and the second rotating portion is connected to the second limiting portion; The attachment device comprises a third handle, and the third handle is located outside the housing; The second rotating portion is connected to the first rotating portion along a first direction, and the third handle is connected to the first limiting portion along the first direction; The first direction is the direction from the circuit breaker body to the additional device.

2. The 1P+N circuit breaker according to claim 1, characterized in that: The first rotating part is provided with a connecting shaft, and the second rotating part is provided with a countersunk hole; Alternatively, the first rotating part is provided with a countersunk hole, and the second rotating part is provided with the connecting shaft; The connecting sleeve is arranged in the countersunk hole.

3. The 1P+N circuit breaker according to claim 2, characterized in that: The cross section of the connecting axis in the first direction is a polygon; A cross section of the counterbore in the first direction is adapted to a cross section of the connecting shaft in the first direction.

4. The 1P+N circuit breaker according to claim 2, characterized in that: The connecting shaft is provided with a first clamping structure, and the countersunk hole is provided with a second clamping structure; The first clamping structure and the second clamping structure are clamped to each other.

5. The 1P+N circuit breaker according to claim 2, characterized in that: The connecting shaft and the counterbore are in interference fit.

6. The 1P+N circuit breaker according to claim 1, characterized in that: The first limiting portion is provided with an assembly hole; The third handle is provided with a linkage rod; The linkage rod is sleeved in the assembling hole.

7. The 1P+N circuit breaker according to claim 1, characterized in that: The housing is provided with a first limiting step and a second limiting step; The second limiting portion is located between the first limiting step and the second limiting step; The first limiting step and the second limiting step are both arranged on a rotation track of the second limiting portion.

8. The 1P+N circuit breaker according to claim 1, characterized in that: The housing includes a base; The first rotating portion is disposed on a first side of the base along the first direction, and the second rotating portion is disposed on a second side of the base along the first direction; The base is provided with a through hole; The first rotating part is connected to the second rotating part through the through hole.

9. The 1P+N circuit breaker according to claim 8, characterized in that: The housing comprises a first side cover, and the first side cover is buckled on the second side of the base along the first direction; The first rotating part and the second rotating part are both sleeved on the handle shaft; The handle shaft passes through the through hole, and one end of the handle shaft is connected to the first side cover.

10. The 1P+N circuit breaker according to claim 9, characterized in that: The housing comprises a second side cover, and the second side cover is buckled on the first side of the base along the first direction; The second side cover is provided with a boss, and the first rotating part abuts against the boss.

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