Circuit breaker

Abstract

The utility model relates to the technical field of low-voltage switches, and particularly discloses a circuit breaker which comprises a circuit breaker shell, an operating handle and an electric driving module. One side of the circuit breaker shell is provided with a rectangular expansion shell protruding outwards, and a cavity of the rectangular expansion shell is communicated with a cavity of the circuit breaker shell to form an accommodating cavity; the operating handle is rotationally arranged in the cavity of the rectangular extension shell, and the rotating axis of the operating handle is perpendicular to the height direction of the rectangular extension shell; the electric driving module comprises a driving motor which is arranged in the accommodating cavity and is close to the operating handle; and the extension direction of a driving shaft of the driving motor is consistent with the height direction of the rectangular extension shell. By improving the structural layout in the circuit breaker shell, compact assembly is realized, and miniaturization design of the circuit breaker is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage switches, and in particular to a circuit breaker. Background Art

[0002] To meet new market demands, circuit breakers need to develop towards miniaturization and intelligence. In existing circuit breakers, the drive motor's drive shaft is typically parallel to the handle's rotating shaft, placing the drive motor along the thickness of the circuit breaker housing. To accommodate the drive motor, transmission assembly, and components that enhance the circuit breaker's intelligence, the thickness of the circuit breaker housing needs to be increased. This results in a significant amount of space within the housing being unusable, resulting in wasted assembly space and hindering the miniaturization of the circuit breaker design. Utility Model Content

[0003] The purpose of the present application is to provide a circuit breaker, which realizes compact assembly by improving the structural layout inside the circuit breaker housing, thereby facilitating the miniaturization design of the circuit breaker.

[0004] The embodiment of the present application is implemented as follows:

[0005] An embodiment of the present application provides a circuit breaker, comprising a circuit breaker housing, an operating handle, and an electric drive module; a rectangular extension housing protruding outward is provided on one side of the circuit breaker housing, the chamber of the rectangular extension housing being connected to the chamber of the circuit breaker housing to form an accommodating chamber; the operating handle is rotatably disposed within the chamber of the rectangular extension housing, with the rotation axis of the operating handle being perpendicular to the height direction of the rectangular extension housing; the electric drive module includes a drive motor disposed within the accommodating chamber and proximate to the operating handle; the drive shaft of the drive motor extends in a direction consistent with the height direction of the rectangular extension housing.

[0006] As an optional embodiment, the device further includes a contact assembly; the contact assembly includes a stationary contact and a moving contact; the operating handle and the moving contact are connected via a linkage rod; when the operating handle is driven to rotate, the linkage rod drives the moving contact to rotate and achieve opening or closing with the stationary contact. The rotation axis of the moving contact of the contact assembly is disposed within the rectangular expansion housing.

[0007] As an optional embodiment, an arc extinguishing assembly is further included; the arc extinguishing assembly and the contact assembly are arranged at intervals in the accommodating cavity along the height direction of the rectangular extension shell.

[0008] As an optional embodiment, the operating handle is provided with a handle umbrella gear group; the electric drive module includes a transmission gear group meshing with the handle umbrella gear group; the drive motor drives the operating handle to rotate through the transmission gear group and the handle umbrella gear group.

[0009] As an optional implementation, the contact assembly and the electric drive module are both arranged on the rotation plane; and the contact assembly is arranged on one side in the height direction of the rectangular extension housing.

[0010] As an optional embodiment, the transmission gear set includes a spur gear set and output bevel gears that can engage with the handle bevel gear set; the drive shaft of the drive motor is connected to the spur gear set to drive the output bevel gears to rotate.

[0011] As an optional embodiment, the moving contact is rotatably arranged in the accommodating cavity, and the rotation axis of the moving contact is parallel to the rotation axis of the operating handle and a distance therebetween.

[0012] As an optional implementation, the static contact is arranged on a side away from the drive motor, and an assembly space for accommodating the moving contact to rotate is generated between the static contact and the drive motor.

[0013] As an optional embodiment, the extension direction of the drive shaft passes through the rotation center of the operating handle.

[0014] As an optional implementation, the arc extinguishing assembly and the contact assembly are arranged close to the inner wall on the same side of the accommodating cavity.

[0015] As an optional implementation, the rotation axis of the operating handle extends along the thickness direction of the circuit breaker housing.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The embodiment of the present application provides a circuit breaker, comprising a circuit breaker housing, an operating handle, and an electric drive module; the circuit breaker housing of the embodiment of the present application is provided with a rectangular extension housing protruding outward on one side, and the chamber of the rectangular extension housing is connected to the chamber of the circuit breaker housing to form a receiving chamber. The operating handle of the embodiment of the present application is rotatably arranged in the chamber of the rectangular extension housing, and the rotation axis of the operating handle is perpendicular to the height direction of the rectangular extension housing; the electric drive module includes a drive motor arranged in the receiving chamber and close to the operating handle; the driving shaft extension direction of the drive motor of the embodiment of the present application is consistent with the height direction of the rectangular extension housing. The present application arranges the drive motor on the length and width plane of the circuit breaker housing, that is, the rotation plane of the operating handle, to prevent the thickness of the circuit breaker housing from increasing in order to accommodate various components. The embodiment of the present application achieves compact assembly by improving the structural layout inside the circuit breaker housing, which is conducive to the miniaturized design of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is one of the structural diagrams of the circuit breaker according to the embodiment of the present application;

[0020] Figure 2 This is the second structural diagram of the circuit breaker according to the embodiment of the present application.

[0021] icon:

[0022] 100-circuit breaker housing; 101-operating handle; 102-electric drive module; 103-rectangular extension housing; 104-accommodation chamber; 105-drive motor; 106-height direction; 107-contact assembly; 108-static contact; 109-moving contact; 110-linking rod; 111-arc extinguishing assembly; 112-transmission gear set; 113-thickness direction. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0025] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0026] To meet new market demands, circuit breakers need to develop towards miniaturization and intelligence. In existing circuit breakers, the drive shaft of the drive motor 105 is typically parallel to the handle's rotational axis, placing the drive motor 105 along the thickness direction 113 of the circuit breaker housing 100. To accommodate the drive motor 105, transmission assembly, and components enhancing the circuit breaker's intelligence, the thickness 113 of the circuit breaker housing 100 must be increased. This effectively limits the effective utilization of a significant portion of the housing's interior space, resulting in wasted assembly space and hindering the miniaturization of the circuit breaker design.

[0027] To solve the above technical problems, an embodiment of the present application provides a circuit breaker.

[0028] Reference Figure 1 As shown, an embodiment of the present application provides a circuit breaker, including a circuit breaker housing 100, an operating handle 101, and an electric drive module 102; a rectangular extension housing 103 protruding outward is provided on one side of the circuit breaker housing 100, and the chamber of the rectangular extension housing 103 is connected to the chamber of the circuit breaker housing 100 to form an accommodating chamber 104; the operating handle 101 is rotatably arranged in the chamber of the rectangular extension housing 103, and the rotation axis of the operating handle 101 is perpendicular to the height direction 106 of the rectangular extension housing 103; the electric drive module 102 includes a drive motor 105 arranged in the accommodating chamber 104 and close to the operating handle 101; the driving shaft of the drive motor 105 extends in the same direction as the height direction 106 of the rectangular extension housing 103.

[0029] The rotation axis of the operating handle 101 extends along the thickness direction 113 of the circuit breaker housing 100 .

[0030] It should be noted that the embodiments of the present application primarily provide a layout for internal components. The rotating portion of the operating handle 101 and the electric drive module 102 in the embodiment of the present application are both disposed within the accommodating cavity 104. Specifically, the rectangular extension housing 103 can be disposed in the middle of one long side of the circuit breaker housing 100 in the length-width plane. This aims to flatten the circuit breaker housing 100 and reduce the physical structure of the circuit breaker housing 100 in the thickness direction 113.

[0031] A circuit breaker provided in an embodiment of the present application includes a circuit breaker housing 100, an operating handle 101, and an electric drive module 102. In the embodiment of the present application, a rectangular extension housing 103 protruding outward is provided on one side of the circuit breaker housing 100, and the cavity of the rectangular extension housing 103 is connected to the cavity of the circuit breaker housing 100 to form an accommodating cavity 104.

[0032] The operating handle 101 of the embodiment of the present application is rotatably arranged in the cavity of the rectangular extension shell 103, and the rotation axis of the operating handle 101 is perpendicular to the height direction 106 of the rectangular extension shell 103; the electric drive module 102 includes a drive motor 105 arranged in the accommodating cavity 104 and close to the operating handle 101; the driving shaft extension direction of the drive motor 105 of the embodiment of the present application is consistent with the height direction 106 of the rectangular extension shell 103.

[0033] The present application arranges the drive motor 105 in the length and width plane of the circuit breaker housing 100, which is also the rotation plane of the operating handle 101. This prevents the circuit breaker housing 100 from increasing in thickness 113 to accommodate various components. By improving the structural layout within the circuit breaker housing 100, the present embodiment achieves compact assembly, facilitating the miniaturization of the circuit breaker design.

[0034] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the switch further includes a contact assembly 107; the contact assembly 107 includes a stationary contact 108 and a moving contact 109; the operating handle 101 and the moving contact 109 are connected by a linkage rod 110; when the operating handle 101 is driven to rotate, the linkage rod 110 drives the moving contact 109 to rotate and achieve opening or closing with the stationary contact 108. The rotation axis of the moving contact 109 of the contact assembly 107 is disposed within the rectangular expansion housing 103.

[0035] It should be noted that the operating handle 101, transmission gear set 112, and drive motor 105 of the embodiment of the present application are arranged sequentially along the height direction 106 of the rectangular expansion housing 103. The operating handle 101, transmission gear set 112, and drive motor 105 are located near the inner wall of one side of the rectangular expansion housing 103, while the contact assembly 107 is located near the inner wall of the other side of the rectangular expansion housing. The linkage rod 110 connects the operating handle 101 on one side with the moving contact 109 on the other side.

[0036] The electric drive module 102 is located close to the operating handle 101, achieving a compact layout. The embodiment of the present application increases the housing space of the circuit breaker housing 100 by using the rectangular expansion housing 103, and facilitates the compact layout of the operating handle 101, the movable contact 109, and the electric drive module 102.

[0037] Compared to the prior art, this design allows for greater space inside the circuit breaker housing 100, allowing for the placement of the arc extinguishing assembly 111 and an intelligent control module for enhancing intelligent control capabilities. Due to the larger space available, the arc extinguishing assembly 111 with enhanced arc extinguishing performance and a larger PCB control board can be placed.

[0038] For example, an arc extinguishing assembly 111 is arranged on one side of the circuit breaker housing 100 of the embodiment of the present application, and a PCB control board is embedded in the circuit breaker housing 100. The PCB control board is arranged on the length and width plane of the circuit breaker housing 100 and is arranged parallel to the rotation plane of the operating handle 101.

[0039] The static contact 108 of the embodiment of the present application is disposed in the circuit breaker housing 100 , and the rotating connection portion provided on the moving contact 109 is disposed in the rectangular extended housing 103 and arranged close to the operating handle 101 to achieve a compact layout.

[0040] It should be noted that, while approaching each other, the rotation of the moving contact 109 and the rotation of the operating handle 101 do not interfere with each other.

[0041] It should be noted that the operating handle 101 of the embodiment of the present application is connected to the moving contact 109 through a provided linkage rod 110. When the operating handle 101 is driven to rotate, the linkage rod 110 drives the moving contact 109 to rotate and realizes the opening or closing of the circuit breaker with the static contact 108.

[0042] The operating handle 101 has a hinged connection hole, the extension direction of the hinged connection hole is consistent with the extension direction of the rotation axis of the operating handle 101, and one end of the linkage rod 110 is inserted into the hinged connection hole.

[0043] One side of the operating handle 101 has a handle body extending out of the rectangular extension housing 103 . The operator can rotate the operating handle 101 around the axis through the handle body and drive the moving contact 109 to rotate through the linkage rod 110 .

[0044] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, an arc extinguishing assembly 111 is further included; the arc extinguishing assembly 111 and the contact assembly 107 are arranged at intervals along the height direction 106 of the rectangular extension housing 103 in the accommodating cavity 104 .

[0045] The arc extinguishing assembly 111 and the contact assembly 107 are arranged close to the inner wall of the same side of the accommodating cavity 104 .

[0046] Furthermore, in the embodiment of the present application, an arc extinguishing assembly 111 is further provided in the accommodating cavity 104 . The arc extinguishing assembly 111 and the contact assembly 107 are arranged vertically in the accommodating cavity 104 , that is, spaced apart along the height direction 106 of the rectangular extended shell 103 .

[0047] It should be noted that the arc extinguishing assembly 111 is disposed close to one side of the inner wall of the accommodating cavity 104 , and the moving contact 109 is disposed close to one side of the inner wall of the rectangular extension housing 103 .

[0048] Through the above arrangement, the arc extinguishing assembly 111 is located directly below the contact assembly 107 , and the opening formed by the opening of the contact assembly 107 faces the arc extinguishing assembly 111 , so that the generated arc can enter the arc extinguishing assembly 111 to achieve effective arc extinguishing.

[0049] It should be noted that the arc extinguishing assembly 111 of the embodiment of the present application adopts a grid arc extinguishing assembly 111, which is composed of a plurality of arc extinguishing grids arranged at intervals.

[0050] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the operating handle 101 is provided with a handle bevel gear set; the electric drive module 102 includes a transmission gear set 112 that meshes with the handle bevel gear set; the drive motor 105 drives the operating handle 101 to rotate via the transmission gear set 112 and the handle bevel gear set. Furthermore, the transmission gear set 112 includes a spur gear set and output bevel gears that can mesh with the handle bevel gear set; the drive shaft of the drive motor 105 is connected to the spur gear set, which can drive the output bevel gears to rotate.

[0051] It should be noted that the spur gear set in the embodiment of the present application includes an input gear, a transmission gear, and a reduction gear, the central axis of which is consistent with the extension direction of the drive shaft of the drive motor 105. In other words, the extension direction of the drive shaft of the drive motor 105 is perpendicular to the plane where the transmission gear, reduction gear, and input gear are located.

[0052] The above arrangement ensures that the transmission gear set 112 and the drive motor 105 are compactly arranged on the length and width plane of the circuit breaker housing 100 .

[0053] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the contact assembly 107 and the electric drive module 102 are both arranged on the rotation plane; and the contact assembly 107 is arranged on one side of the height direction 106 of the rectangular extended housing 103.

[0054] Furthermore, the contact assembly 107, electric drive module 102 and arc extinguishing assembly 111 of the embodiment of the present application are all arranged on the rotation plane, that is, on the length and width plane of the circuit breaker housing 100, to achieve a flat layout and prevent the increase of the size in the thickness direction 113.

[0055] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the moving contact 109 is rotatably arranged in the accommodating cavity 104, and the rotation axis of the moving contact 109 is parallel to the rotation axis of the operating handle 101 and is spaced apart.

[0056] The rotation center of the moving contact 109 and the rotation center of the operating handle 101 are spaced apart along the length direction of the rectangular extension housing 103. This arrangement can effectively realize the rational utilization of the inner cavity of the rectangular extension housing 103.

[0057] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the static contact 108 is arranged on a side away from the drive motor 105, and an assembly space for accommodating the moving contact 109 to perform rotational movement is generated between the static contact 108 and the drive motor 105.

[0058] In the embodiment of the present application, the static contact 108 is arranged at a side away from the drive motor 105 , and a space for accommodating the rotation of the moving contact 109 is formed between the static contact 108 and the vertically arranged drive motor 105 .

[0059] As an optional embodiment, the extension direction of the drive shaft passes through the rotation center of the operating handle 101.

[0060] It should be noted that the extension direction of the drive shaft is perpendicular to the rotation axis of the operating handle 101. The extension direction of the drive shaft can be made to intersect perpendicularly with the rotation axis of the operating handle 101 as needed. Those skilled in the art can set this as needed.

[0061] Preferably, an embodiment of the present application provides a circuit breaker, including a circuit breaker housing 100, an operating handle 101 and an electric drive module 102; a rectangular extension housing 103 protruding outward is provided on one side of the circuit breaker housing 100, and the cavity of the rectangular extension housing 103 is connected to the cavity of the circuit breaker housing 100 to form an accommodating cavity 104.

[0062] The operating handle 101 is rotatably arranged in the cavity of the rectangular extension shell 103, and the rotation axis of the operating handle 101 is perpendicular to the height direction 106 of the rectangular extension shell 103; the electric drive module 102 includes a drive motor 105 arranged in the accommodating cavity 104 and close to the operating handle 101; the extension direction of the drive shaft of the drive motor 105 is consistent with the height direction 106 of the rectangular extension shell 103.

[0063] The rotation axis of the operating handle 101 extends along the thickness direction 113 of the circuit breaker housing 100 .

[0064] It also includes a contact assembly 107; the contact assembly 107 includes a static contact 108 and a moving contact 109; the operating handle 101 is connected to the moving contact 109 through a provided linkage rod 110; when the operating handle 101 is driven to rotate, the linkage rod 110 drives the moving contact 109 to rotate and realize the opening or closing of the circuit breaker with the static contact 108.

[0065] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A circuit breaker, characterized in that: The invention comprises a circuit breaker housing (100), an operating handle (101) and an electric drive module (102); a rectangular extension housing (103) protruding outward is provided on one side of the circuit breaker housing (100); a chamber of the rectangular extension housing (103) is connected with a chamber of the circuit breaker housing (100) to form an accommodating chamber (104); the operating handle (101) is rotatably arranged in the chamber of the rectangular extension housing (103), and a rotation axis of the operating handle (101) is perpendicular to a height direction (106) of the rectangular extension housing (103); the electric drive module (102) comprises a drive motor (105) arranged in the accommodating chamber (104) and close to the operating handle (101); an extension direction of a drive shaft of the drive motor (105) is consistent with a height direction (106) of the rectangular extension housing (103).

2. The circuit breaker according to claim 1, wherein: It also includes a contact assembly (107); the rotation axis of the movable contact (109) of the contact assembly (107) is arranged in the rectangular expansion shell (103).

3. The circuit breaker according to claim 2, wherein: It also includes an arc extinguishing assembly (111); the arc extinguishing assembly (111) and the contact assembly (107) are arranged at intervals in the accommodating cavity (104) along the height direction (106) of the rectangular expansion housing (103).

4. The circuit breaker according to claim 2, wherein: The operating handle (101) is provided with a handle bevel gear set; the electric drive module (102) includes a transmission gear set (112) meshing with the handle bevel gear set; the drive motor (105) drives the operating handle (101) to rotate via the transmission gear set (112) and the handle bevel gear set.

5. The circuit breaker according to claim 2, wherein: The contact assembly (107) and the electric drive module (102) are both arranged on the rotation plane of the operating handle (101); and the contact assembly (107) is arranged on one side of the height direction (106) of the rectangular extension housing (103).

6. The circuit breaker according to claim 4, characterized in that The transmission gear set (112) includes a spur gear set and output bevel gears that can mesh with the handle bevel gear set; the drive shaft of the drive motor (105) is connected to the spur gear set and can drive the output bevel gears to rotate.

7. The circuit breaker according to claim 6, characterized in that The contact assembly (107) includes a static contact (108), which is arranged on a side away from the drive motor (105). An assembly space for accommodating the moving contact (109) to perform rotational movement is generated between the static contact (108) and the drive motor (105).

8. The circuit breaker according to any one of claims 1 to 7, characterized in that: The extending direction of the drive shaft passes through the rotation center of the operating handle (101).

9. The circuit breaker according to claim 3, characterized in that The arc extinguishing assembly (111) and the contact assembly (107) are arranged close to the inner wall of the same side of the accommodating cavity (104).

10. The circuit breaker according to any one of claims 1 to 7, characterized in that: The rotation axis of the operating handle (101) extends along the thickness direction (113) of the circuit breaker housing (100).

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