Opening and closing operation mechanism and circuit breaker
By setting a common connection hole on the internal handle of the circuit breaker, the problem of inconvenience in operation of the existing circuit breaker is solved, and a greater operating stroke and lower operating difficulty is achieved.
Patent Information
- Application Number
- CN202421576859.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The operating stroke of the existing circuit breakers is short, which leads to inconvenience in operation and a large angle transmission ratio, which easily leads to a reduction in the operating stroke of the operating button.
By setting a common connection hole on the inner handle, the angle transmission ratio is reduced, and the operation stroke of the operation button is increased, making operation easier.
The force arm of the switch opening and closing is effectively extended, reducing the difficulty of the switch opening and closing operation, and improving the convenience of operation.
Smart Images
Figure CN222867590U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a switching operation mechanism and a circuit breaker. Background Art
[0002] Circuit breakers usually use operating buttons to achieve opening and closing operations. In the prior art, the operating button is a lever structure, and the middle of the operating button has a rotating connection part connected to the circuit breaker housing. The opening and closing operations are achieved by pressing both sides of the operating button. Usually, the operating button is connected to the moving contact assembly through a linkage rod, an inner handle, and a moving contact connecting rod to achieve the opening and closing control of the moving contact assembly. In the prior art, two hinged connecting parts are usually provided on the inner handle, which are used to connect the linkage rod and the moving contact connecting rod respectively. This structure causes the operating button to control the moving contact assembly in linkage with a relatively large angle transmission, which easily causes the operating button to reduce the opening and closing operation stroke, making it inconvenient to operate. Utility Model Content
[0003] The purpose of the present application is to provide a switching operating mechanism and a circuit breaker, which effectively reduces the angular transmission ratio by arranging a common connecting hole on the inner handle, thereby increasing the operating stroke of the operating button and facilitating operation.
[0004] The embodiment of the present application is implemented as follows:
[0005] In the first aspect, an embodiment of the present application provides a switching operation mechanism, comprising an operation button, a linkage rod, an inner handle and a moving contact connecting rod; a common connecting hole is provided on the inner handle, one end of the linkage rod is hinged to the operation button, and the other end is hinged to the common connecting hole; one end of the moving contact connecting rod is connected to the moving contact assembly of the circuit breaker, and the other end is hinged to the common connecting hole; the operation button is driven to drive the moving contact assembly to switch on and off through the linkage rod and the moving contact connecting rod.
[0006] As an optional embodiment, a rotating connection part is provided at one end of the operating button and an operating part is provided at the other end, and a connecting part is provided between the rotating connection part and the operating part of the operating button; one end of the linkage rod is hinged to the connecting part, and the rotating connection part is connected to the housing of the circuit breaker; the operating part is driven to rotate the operating button around the rotating connection part, and drives the moving contact assembly to open and close through the linkage rod and the moving contact connecting rod.
[0007] As an optional implementation, the linkage rod and the moving contact connecting rod are respectively located on both sides of the rotation plane of the inner handle.
[0008] As an optional implementation, a line from the center of the hinge between the linkage rod and the operating button to the rotation center of the rotating connection portion coincides with an opening and closing force arm formed on the operating button.
[0009] As an optional embodiment, the operating part is forced to rotate in a direction away from the shell, and the distance from the operating part to the rotating connection part forms an opening force arm, so that the linkage rod drives the moving contact assembly to open the switch; the operating part is forced to rotate in a direction close to the shell, and the distance from the operating part to the rotating connection part forms a closing force arm, so that the linkage rod drives the moving contact assembly to close the switch; or, the operating part is forced to rotate in a direction close to the shell, and the distance from the operating part to the rotating connection part forms an opening force arm, so that the linkage rod drives the moving contact assembly to open the switch; the operating part is forced to rotate in a direction away from the shell, and the distance from the operating part to the rotating connection part forms a closing force arm, so that the linkage rod drives the moving contact assembly to close the switch.
[0010] As an optional implementation, when closing the circuit breaker, a line connecting the center of the common connection hole to the center of the connection portion is perpendicular to the closing force arm.
[0011] As an optional embodiment, one side of the shell has a button mounting surface, and the button mounting surface has a sunken platform recessed into the interior of the shell. When the plane where the operation button is located is parallel to the button mounting surface, the operating part extends to the sunken platform, and an operating gap is formed between the operating part and the sunken platform.
[0012] As an optional embodiment, the connecting portion is a connecting hole arranged on the operating button, and a buckling cover plate is arranged on the operating button, and the plane where the buckling cover plate is located is perpendicular to the extension direction of the connecting hole; an accommodating groove that can accommodate the swing of the linkage rod is formed between the buckling cover plate and the side wall of the operating button; and the buckling cover plate has a blocking surface that contacts the linkage rod.
[0013] In a second aspect, an embodiment of the present application discloses a circuit breaker, comprising a housing, the above-mentioned opening and closing operating mechanism, and a moving contact assembly; the opening and closing operating mechanism can drive the moving contact assembly to open or close.
[0014] As an optional implementation, the opening and closing operating mechanism includes a plurality of sequentially arranged operating buttons and a series structure; the series structure extends along the arrangement direction of the operating buttons and is connected to the plurality of the operating buttons.
[0015] The beneficial effects of the embodiments of the present application include:
[0016] The embodiment of the present application provides a switch-on and switch-off operating mechanism, including an operating button, a linkage rod, an inner handle, and a moving contact connecting rod; a common connection hole is provided on the inner handle, one end of the linkage rod of the embodiment of the present application is hinged to the operating button, and the other end is hinged to the common connection hole; one end of the moving contact connecting rod of the embodiment of the present application is connected to the moving contact assembly of the circuit breaker, and the other end is hinged to the common connection hole; the operating button is driven to drive the moving contact assembly to switch on and off through the linkage rod and the moving contact connecting rod. In the switch-on and switch-off operation, the embodiment of the present application effectively reduces the angle transmission ratio by providing a common connection hole on the inner handle, so that the operating stroke of the operating button is increased, which is convenient for operation.
[0017] The embodiment of the present application provides a circuit breaker, including a housing, the above-mentioned opening and closing operating mechanism and a moving contact assembly; the opening and closing operating mechanism can drive the moving contact assembly to open or close. The circuit breaker provided in the embodiment of the present application adopts the above-mentioned opening and closing operating mechanism, which enables the opening and closing cantilever on the operating button to be shared, which not only effectively reduces the space required for the assembly of the operating button, but also effectively extends the opening and closing force arm, reducing the difficulty of opening and closing operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the structure of a circuit breaker according to an embodiment of the present application;
[0020] Figure 2 This is one of the structural schematic diagrams of the opening and closing operating mechanism of the embodiment of the present application;
[0021] Figure 3 This is the second structural diagram of the opening and closing operating mechanism of the embodiment of the present application;
[0022] Figure 4 This is the third structural diagram of the opening and closing operating mechanism of the embodiment of the present application;
[0023] Figure 5 This is the fourth structural diagram of the opening and closing operating mechanism of the embodiment of the present application;
[0024] Figure 6 This is the fifth structural schematic diagram of the opening and closing operating mechanism of the embodiment of the present application.
[0025] icon:
[0026] 100-operating button; 101-linking rod; 102-rotating connection part; 103-operating part; 104-housing; 105-moving contact assembly; 106-inner handle; 107-button mounting surface; 108-sunk platform; 109-operating gap; 110-arc-shaped structure; 111-connecting hole; 112-pressing cover plate; 113-blocking surface; 114-slot; 115-protruding structure; 116-common connecting hole; 117-moving contact connecting rod. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] 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 which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] Usually, the operating button 100 is connected to the moving contact assembly 105 through the linkage rod 101, the inner handle 106 and the moving contact connecting rod 117 to realize the opening and closing control of the moving contact assembly 105. In the prior art, two hinged connection parts are usually arranged on the inner handle 106, which are used to respectively connect the linkage rod 101 and the moving contact connecting rod 117. This structure causes the angle transmission of the operating button 100 to control the moving contact assembly 105 to be relatively large, which easily causes the opening and closing operation stroke of the operating button 100 to be reduced, making it inconvenient to operate.
[0032] In order to solve the above technical problems, the embodiments of the present application provide a switching operation mechanism and a circuit breaker.
[0033] Reference Figure 1 , Figure 2 As shown, the embodiment of the present application provides a switch-on and switch-off operation mechanism, including an operation button 100, a linkage rod 101, an inner handle 106, and a moving contact connecting rod 117; a common connection hole 116 is provided on the inner handle 106, one end of the linkage rod 101 of the embodiment of the present application is hinged to the operation button 100, and the other end is hinged to the common connection hole 116; one end of the moving contact connecting rod 117 of the embodiment of the present application is connected to the moving contact assembly 105 of the circuit breaker, and the other end is hinged to the common connection hole 116; the operation button 100 is driven to drive the moving contact assembly 105 to switch on and off through the linkage rod 101 and the moving contact connecting rod 117. In the switch-on and switch-off operation, the embodiment of the present application effectively reduces the angle transmission ratio by providing the common connection hole 116 on the inner handle 106, so that the operation stroke of the operation button 100 is increased, which is convenient for operation.
[0034] Furthermore, the inner handle 106 is rotatably arranged and the rotation axis of the inner handle 106 is parallel to the rotation axis of the rotation connection portion 102 , and the linkage rod 101 and the moving contact connecting rod 117 are respectively located on both sides of the rotation plane of the inner handle 106 .
[0035] It should be noted that the linkage rod 101 and the moving contact link 117 are respectively located on both sides of the rotation plane of the inner handle 106. For the housing 104 of the circuit breaker, the linkage rod 101 is close to the housing base, and the moving contact link 117 is close to the housing cover. Alternatively, the moving contact link 117 is close to the housing base, and the linkage rod 101 is close to the housing cover.
[0036] The above arrangement can solve the problem of balancing the inner handle and reduce the wear of the inner handle and the outer shell, and the linkage rod and the outer shell.
[0037] In addition, the operation button 100 in the prior art is a lever structure, and the middle of the operation button 100 has a rotating connection part 102 connected to the circuit breaker housing 104, and the opening and closing operations are realized by pressing the two sides of the operation button 100. Since the rotating connection part 102 is located in the middle of the operation button 100, the opening cantilever and the closing cantilever of the operation button 100 cannot be shared, thereby occupying a large installation space on the housing 104. In addition, the opening and closing force arm of the existing operation button 100 is relatively short, resulting in a large opening and closing operating force, which makes the opening and closing operations difficult. Especially for multi-pole circuit breakers, it is almost impossible to realize the opening and closing operations of the operation button 100 with one hand.
[0038] Reference Figure 1 , Figure 2 As shown, an embodiment of the present application provides a closing and opening operating mechanism, including an operating button 100 and a linkage rod 101; a rotating connection part 102 is provided at one end of the operating button 100, and an operating part 103 is provided at the other end, and a connecting part is provided between the rotating connection part 102 and the operating part 103 of the operating button 100; one end of the linkage rod 101 is hinged to the connecting part, and the other end is linked to the moving contact assembly 105 of the circuit breaker, the rotating connection part 102 is connected to the housing 104 of the circuit breaker, and the operating part 103 is driven to rotate the operating button 100 around the rotating connection part 102, and drive the moving contact assembly 105 to close and open the circuit breaker through the linkage rod 101.
[0039] It should be noted that the operating button 100 of the embodiment of the present application is connected to the moving contact assembly 105 through the linkage rod 101, and the operating button 100 can drive the moving contact assembly 105 to move through the linkage rod 101. Exemplarily, when the operating button 100 rotates around the rotating connection portion 102 in a direction close to the housing 104, the moving contact assembly 105 is driven to close the circuit breaker through the linkage rod 101. When the operating button 100 rotates around the rotating connection portion 102 in a direction away from the housing 104, the moving contact assembly 105 is driven to open the circuit breaker through the linkage rod 101.
[0040] It should be noted that the specific structure of the operation button 100 can be set by those skilled in the art as needed, and there is no special limitation on this.
[0041] The embodiment of the present application provides a switch-on and switch-off operating mechanism, including an operating button 100 and a linkage rod 101; a rotating connection portion 102 is provided at one end of the operating button 100, and an operating portion 103 is provided at the other end, and a connecting portion is provided between the rotating connection portion 102 and the operating portion 103; the linkage rod 101 of the embodiment of the present application is hinged to the connecting portion at one end, and linked to the moving contact assembly 105 of the circuit breaker at the other end, and the rotating connection portion 102 is connected to the housing 104 of the circuit breaker, and the operating portion 103 is driven to rotate the operating button 100 around the rotating connection portion 102, and drives the moving contact assembly 105 to switch on and off through the linkage rod 101. Compared with the prior art, the embodiment of the present application sets the rotating connection portion 102 at one end of the operating button 100, so that the switch-off cantilever and the switch-off cantilever of the operating button 100 can be shared, and the cantilever installation space position can be shared by pressing down to close the switch and lifting up to open the switch. Compared with the prior art, the embodiment of the present application can enable a larger distance between the operating part 103 of the operating button 100 and the rotating connection part 102 in the same assembly space. Therefore, the embodiment of the present application can form a larger opening and closing force arm, thereby greatly reducing the difficulty of opening and closing operations of the operating button 100.
[0042] Reference Figure 2 , Figure 3 As shown, as an optional embodiment, the operating part 103 is forced to rotate in the direction away from the shell 104, and the distance between the operating part 103 and the rotating connection part 102 forms an opening force arm, so that the linkage rod 101 drives the moving contact assembly 105 to open the switch; the operating part 103 is forced to rotate in the direction close to the shell 104, and the distance between the operating part 103 and the rotating connection part 102 forms a closing force arm, so that the linkage rod 101 drives the moving contact assembly 105 to close the switch.
[0043] It should be noted that the operating part 103 rotates away from the housing 104 under the traction force, so that a switch-off lever arm is formed on the operating button 100. The operating part 103 rotates toward the housing 104 under the pressure, so that a switch-on lever arm is formed on the operating button 100.
[0044] Among them, the operating part 103 is located outside the shell 104. During operation, the staff has a larger operating space when applying pressure on the operating part 103 compared with the traction force. Therefore, it is convenient for the staff to operate and apply a larger closing force to ensure rapid closing.
[0045] It should be noted that the movement strokes of opening and closing the switch can also be swapped.
[0046] Exemplarily, the operating part 103 is forced to rotate in a direction away from the shell 104, and the distance between the operating part 103 and the rotating connection part 102 forms a closing force arm, so that the linkage rod 101 drives the moving contact assembly 105 to close the switch; the operating part 103 is forced to rotate in a direction close to the shell 104, and the distance between the operating part 103 and the rotating connection part 102 forms an opening force arm, so that the linkage rod 101 drives the moving contact assembly 105 to open the switch.
[0047] As an optional embodiment, the rotation axis of the inner handle 106 is parallel to the rotation axis of the rotating connection part 102, the end of the linkage rod 101 away from the operation button 100 is hinged to the common connection hole 116 on the inner handle 106, and the inner handle 106 is linked with the moving contact assembly 105 through the moving contact connecting rod 117.
[0048] The embodiment of the present application further includes an inner handle 106 installed in the housing 104. The embodiment of the present application establishes a connection between the linkage rod 101 and the moving contact assembly 105 through the inner handle 106. A transmission connecting rod is provided on the inner handle 106, one end of the transmission connecting rod is hinged to the inner handle 106, and the other end is hinged to the moving contact assembly 105. The operation button 100 drives the inner handle 106 to move through the linkage rod 101, and the inner handle 106 drives the moving contact assembly 105 to move through the transmission connecting rod.
[0049] As an optional implementation, when closing the circuit breaker, the line from the center of the common connection hole 116 to the center of the connection part is perpendicular to the closing force arm.
[0050] Furthermore, during the closing process, the line connecting the hinge of the linkage rod 101 and the inner handle 106 to the connecting part is perpendicular to the closing force arm. This arrangement minimizes the closing force applied to the operating button 100, which can greatly reduce the difficulty of the closing operation, especially for the arrangement of multiple series operating buttons 100 in a multi-pole circuit breaker.
[0051] It should be noted that the line connecting the hinge of the linkage rod 101 and the inner handle 106 to the connecting part is perpendicular to the closing force arm only when the closing is past the dead point. It should be noted that the closing force is the largest when the operation button 100 is closed past the dead point. At this time, the line connecting the hinge of the linkage rod 101 and the inner handle 106 to the connecting part is perpendicular to the closing force arm, which can effectively reduce the maximum value of the closing force and reduce the difficulty of the closing operation.
[0052] Reference Figure 2 , Figure 3As shown, as an optional embodiment, one side of the shell 104 has a button mounting surface 107, and the button mounting surface 107 has a recessed platform 108 recessed into the interior of the shell 104. When the plane where the operating button 100 is located is parallel to the button mounting surface 107, the operating part 103 extends to the recessed platform 108, and an operating gap 109 is formed between the operating part 103 and the recessed platform 108.
[0053] Furthermore, in the embodiment of the present application, a button mounting surface 107 is provided on the housing 104, and the button mounting surface 107 is used to mount the operating button 100. A sink 108 recessed into the housing 104 is provided on the button mounting surface 107, and when the plane where the operating button 100 is located is parallel to the button mounting surface 107, there is still a gap between the operating portion 103 and the surface of the sink 108.
[0054] In specific operations, the staff can insert their fingers into the operating gap 109 and push the operating button 100 upwards to open the gate.
[0055] Reference Figure 3 As shown, as an optional embodiment, an arc-shaped structure 110 is provided on the edge of the operating portion 103 away from the rotating connection portion 102, and an operating gap 109 is located between the arc-shaped structure 110 and the sink 108. The user can contact the arc-shaped structure 110 through the operating gap 109 and apply force.
[0056] Furthermore, in the embodiment of the present application, an arc-shaped structure 110 is provided on the edge of the operating portion 103 away from the rotating connection portion 102. The arc-shaped structure 110 can not only reduce the discomfort felt by the staff during operation, but also increase the contact area between the operating portion 103 and the staff's hand on the side close to the shell 104, thereby facilitating the staff's operation.
[0057] Reference Figure 4 As shown, as an optional embodiment, the connecting portion is a connecting hole 111 arranged on the operating button 100, the extension direction of the connecting hole 111 is parallel to the rotation axis of the rotating connecting portion 102, and a plug-in shaft is arranged at the end of the linkage rod 101, the extension direction of the plug-in shaft is perpendicular to the linkage rod 101 and can be inserted into the connecting hole 111.
[0058] More preferably, a line from the center of the hinge between the linkage rod 101 and the operating button 100 to the rotation center of the rotating connection part 102 coincides with the opening and closing force arm formed on the operating button 100 .
[0059] That is to say, the center of the connecting hole 111 is located on the opening and closing force arm, so that the line connecting the center of the connecting hole 111 and the rotating connecting part 102 is collinear with the opening and closing force arm. This setting can effectively reduce the opening and closing force, effectively reduce the operating difficulty, and facilitate operation.
[0060] Reference Figure 4 , Figure 5 as well as Figure 6 As shown, a pressing cover plate 112 is provided on the operating button 100, and the plane where the pressing cover plate 112 is located is perpendicular to the extension direction of the connecting hole 111; a receiving groove that can accommodate the swing of the linkage rod 101 is formed between the pressing cover plate 112 and the side wall of the operating button 100; the pressing cover plate 112 has a blocking surface 113 that contacts the linkage rod 101.
[0061] The operating button 100 is provided with a card slot 114 , and the pressing cover plate 112 is provided with a protruding structure 115 ; the protruding structure 115 is engaged with the card slot 114 .
[0062] The embodiment of the present application can effectively prevent the end of the linkage rod 101 from coming out of the connection hole 111 by setting the buckling cover plate 112, thereby improving the structural reliability. In addition, the clamping structure formed by the clamping groove 114 and the protruding structure 115 is easy to install.
[0063] The embodiment of the present application provides a circuit breaker, including a housing 104, the above-mentioned opening and closing operating mechanism, and a moving contact assembly 105; the opening and closing operating mechanism can drive the moving contact assembly 105 to open or close.
[0064] The circuit breaker provided in the embodiment of the present application adopts the above-mentioned opening and closing operating mechanism, which enables the opening and closing cantilever arms on the operating button 100 to be shared, which not only effectively reduces the space required for assembling the operating button 100, but also effectively extends the opening and closing force arm, thereby reducing the difficulty of opening and closing operations.
[0065] The opening and closing operating mechanism includes a plurality of sequentially arranged operating buttons 100 and a series structure; the series structure extends along the arrangement direction of the operating buttons 100 and is connected to the plurality of operating buttons 100.
[0066] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A switch-on and switch-off operating mechanism, characterized in that: The invention comprises an operating button (100), a linkage rod (101), an inner handle (106) and a moving contact connecting rod (117); a common connecting hole (116) is provided on the inner handle (106); one end of the linkage rod (101) is hinged to the operating button (100), and the other end is hinged to the common connecting hole (116); one end of the moving contact connecting rod (117) is connected to a moving contact assembly (105) of a circuit breaker, and the other end is hinged to the common connecting hole (116); the operating button (100) is driven through the linkage rod (101) and the moving contact connecting rod (117) to drive the moving contact assembly (105) to open and close.
2. The opening and closing operating mechanism according to claim 1, characterized in that: The operating button (100) is provided with a rotating connection part (102) at one end and an operating part (103) at the other end; the operating button (100) is provided with a connecting part between the rotating connection part (102) and the operating part (103); one end of the linkage rod (101) is hinged to the connecting part; the rotating connection part (102) is connected to a housing (104) of the circuit breaker; the operating part (103) is driven to rotate the operating button (100) around the rotating connection part (102), and drives the moving contact assembly (105) to open and close the circuit breaker through the linkage rod (101) and the moving contact connecting rod (117).
3. The opening and closing operating mechanism according to claim 1, characterized in that: The linkage rod (101) and the moving contact connecting rod (117) are respectively located on two sides of the rotation plane of the inner handle (106).
4. The opening and closing operating mechanism according to claim 2, characterized in that: The line from the center of the hinge between the linkage rod (101) and the operating button (100) to the rotation center of the rotating connection part (102) coincides with the opening and closing force arm formed on the operating button (100).
5. The opening and closing operating mechanism according to claim 2, characterized in that: The operating part (103) is forced to rotate in a direction away from the housing (104), and the distance between the operating part (103) and the rotating connection part (102) forms a switch-off force arm, so that the linkage rod (101) drives the moving contact assembly (105) to open the switch; the operating part (103) is forced to rotate in a direction close to the housing (104), and the distance between the operating part (103) and the rotating connection part (102) forms a switch-on force arm, so that the linkage rod (101) drives the moving contact assembly (105) to close the switch; or The operating part (103) is forced to rotate in a direction approaching the housing (104), and the distance between the operating part (103) and the rotating connection part (102) forms a switch-off force arm, so that the linkage rod (101) drives the moving contact assembly (105) to open the switch; the operating part (103) is forced to rotate in a direction away from the housing (104), and the distance between the operating part (103) and the rotating connection part (102) forms a switch-on force arm, so that the linkage rod (101) drives the moving contact assembly (105) to close the switch.
6. The opening and closing operating mechanism according to claim 2, characterized in that: When the switch is closed, a line from the center of the common connection hole (116) to the center of the connection portion (102) is perpendicular to the closing force arm.
7. The opening and closing operating mechanism according to any one of claims 4 to 6, characterized in that: One side of the shell (104) is provided with a button mounting surface (107), and the button mounting surface (107) is provided with a sunken platform (108) recessed into the interior of the shell (104); when the plane where the operating button (100) is located is parallel to the button mounting surface (107), the operating portion (103) extends to the sunken platform (108), and an operating gap (109) is formed between the operating portion (103) and the sunken platform (108).
8. The opening and closing operating mechanism according to claim 2, characterized in that: The connecting portion is a connecting hole (111) arranged on the operating button (100); a pressing cover plate (112) is arranged on the operating button (100); the plane where the pressing cover plate (112) is located is perpendicular to the extending direction of the connecting hole (111); a receiving groove capable of accommodating the swing of the linkage rod (101) is formed between the pressing cover plate (112) and the side wall of the operating button (100); and a blocking surface (113) in contact with the linkage rod (101) is provided on the pressing cover plate (112).
9. A circuit breaker, characterized in that: It comprises a housing (104), an opening and closing operating mechanism as described in any one of claims 1 to 8, and a moving contact assembly (105); the opening and closing operating mechanism can drive the moving contact assembly (105) to open or close.
10. The circuit breaker according to claim 9, characterized in that The opening and closing operating mechanism comprises a plurality of sequentially arranged operating buttons (100) and a series structural member; the series structural member extends along the arrangement direction of the operating buttons (100) and is connected to the plurality of operating buttons (100).