Handle drive mechanism and plug-in circuit breaker

Abstract

The embodiment of the application provides a handle transmission mechanism and an insertion type circuit breaker, and belongs to the technical field of electrical equipment. The handle transmission mechanism is installed on the shell of the circuit breaker. The shell is also provided with an operating mechanism for driving the movable contact to rotate. The handle transmission mechanism comprises a handle, a transmission member and a rotating member which are sequentially and drivingly connected, wherein the rotating member is drivingly connected to the operating mechanism. The handle is used for rotating under force to drive the transmission member to rotate, so that the transmission member drives the rotating member to rotate, and the rotating member drives the operating mechanism to act when rotating, so as to drive the movable contact to contact or separate from the static contact of the circuit breaker. When such a handle rotating mechanism is applied to the circuit breaker, the handle, the transmission member and the rotating member can be flexibly arranged according to the reserved installation space inside the shell, and the flexibility of the handle transmission mechanism in the circuit breaker, especially in the insertion type circuit breaker with small internal space, is improved.

Description

Technical Field

[0001] This application relates to the field of electrical equipment, and more particularly to a handle transmission mechanism and a plug-in circuit breaker. Background Technology

[0002] Circuit breakers are generally equipped with a handle transmission mechanism, which transmits the operator's opening and closing actions to the moving contacts of the circuit breaker. During the development of circuit breakers, continuous optimization is necessary to meet the usage requirements of users in different installation spaces, such as by changing or adding / removing corresponding functional components.

[0003] However, changes or additions to functional components can alter the internal layout of the circuit breaker, causing the components in the existing handle transmission mechanism to become unusable due to the constraints of the internal parts of the circuit breaker. Therefore, there is an urgent need for a more flexible handle transmission mechanism to adapt to different circuit breakers. Summary of the Invention

[0004] In view of the above problems, the present application provides a handle transmission mechanism and a plug-in circuit breaker, which at least partially solves the problem of low flexibility in the internal layout of existing handle transmission mechanisms in circuit breakers.

[0005] According to a first aspect of the embodiments of this application, a handle transmission mechanism is provided. The handle transmission mechanism is mounted on the housing of a circuit breaker. The housing also houses an operating mechanism for rotating a moving contact. The handle transmission mechanism includes a handle, a transmission member, and a rotating member connected in sequence, wherein the rotating member is driven to the operating mechanism. The handle is rotated under force to drive the transmission member to rotate, thereby causing the transmission member to drive the rotating member to rotate. When the rotating member rotates, it drives the operating mechanism to actuate, thereby causing the moving contact to contact or separate from the stationary contact of the circuit breaker.

[0006] In this embodiment, the handle can be forced to rotate the transmission component, which in turn drives the rotating component to rotate. When the rotating component rotates, it drives the operating mechanism to actuate, causing the moving contact to contact or separate from the stationary contact, thus closing or opening the circuit breaker. By configuring the handle transmission mechanism to include the handle, transmission component, and rotating component, these three components are sequentially connected to drive the operating mechanism, transmitting the closing and opening actions of the handle to the operating mechanism in a linear or non-linear direction. Compared to directly driving the operating mechanism via the handle, the handle transmission mechanism in this embodiment requires less installation space and offers greater flexibility in its installation within the housing.

[0007] In some embodiments, the handle, transmission element, and rotating element are arranged sequentially along the approximate length of the housing.

[0008] The above scheme allows the handle transmission mechanism to be arranged along the approximate length of the housing, thus enabling long-distance transmission.

[0009] In some embodiments, the handle transmission mechanism further includes a first connector, a second connector, and a third connector; one end of the first connector is rotatably connected to the handle, and the other end is rotatably connected to the transmission member; one end of the second connector is rotatably connected to the transmission member, and the other end is rotatably connected to the rotating member; one end of the third connector is rotatably connected to the rotating member, and the other end is rotatably connected to the operating mechanism.

[0010] Through the above scheme, the handle, the first connecting member, and the transmission member can form a first four-bar linkage mechanism, and the transmission member, the second connecting member, and the rotating member can form a second four-bar linkage mechanism. In other words, the handle transmission mechanism will contain two four-bar linkage mechanisms. When the handle transmission mechanism contains two four-bar linkage mechanisms, the transmission stability of the handle transmission mechanism can be improved. Furthermore, when the handle, the transmission member, and the rotating member are arranged sequentially along the approximate length direction of the housing, the handle transmission mechanism can achieve stable transmission over long distances.

[0011] In some embodiments, the other end of the first connector is rotatably connected to the transmission member near the handle, one end of the second connector is rotatably connected to the transmission member near the rotating member; the other end of the second connector is rotatably connected to the rotating member near the transmission member, and one end of the third connector is rotatably connected to the rotating member near the operating mechanism.

[0012] The above solution reduces the possibility of contact and interference between the first and second connecting parts and the possibility of "jamming" during circuit breaker closing, and reduces the possibility of contact and interference between the second and third connecting parts and the possibility of "jamming" during circuit breaker opening, thereby improving the reliability and stability of the handle transmission mechanism.

[0013] In some embodiments, the first connector has a first distance between its rotatable connection position on the handle and the rotation axis of the handle, and the second connector has a second distance between its rotatable connection position on the rotating member and the rotation axis of the rotating member, wherein the first distance is greater than the second distance.

[0014] The above scheme allows the angular displacement of the handle to be greater than that of the rotating component. This enables the rotating component to rotate a larger angle through the transmission component when the handle is rotated by a smaller force. Consequently, the rotating component can drive the components connected to the moving contact in the operating mechanism to rotate a larger angle, thereby causing the moving contact to contact or separate from the stationary contact. This is more conducive to the closing or opening of the circuit breaker.

[0015] According to a second aspect of the embodiments of this application, a plug-in circuit breaker is provided. The plug-in circuit breaker includes a housing, a handle transmission mechanism (as described in the first aspect), an operating mechanism for rotating the moving contact, and an electric operating mechanism. The electric operating mechanism includes a motor, a multi-stage gear, and a closing assembly connected in sequence. The closing assembly is further driven by a transmission member. Under the driving action of the motor, the multi-stage gear drives the transmission member to rotate via the closing assembly, thereby causing the transmission member to drive the operating mechanism via the rotating member to bring the moving contact into contact with the stationary contact of the circuit breaker.

[0016] By configuring the electric operating mechanism to include a motor, multi-stage gears, and a closing assembly, and driving the closing assembly to the transmission component in the handle transmission mechanism, the motor, when powered on, can drive the multi-stage gears to rotate. The rotation of the multi-stage gears then drives the closing assembly to actuate, causing the closing assembly to drive the transmission component to rotate. The rotation of the transmission component, the rotating component, and the operation mechanism together bring the moving contact into contact with the stationary contact, thus closing the circuit breaker. Furthermore, during the closing process, the closing assembly drives the transmission component to rotate, allowing the electric operating mechanism and the handle transmission mechanism to share the transmission and rotating components, reducing the need for other driving components and saving space within the housing.

[0017] In some embodiments, the closing assembly includes a first gear and a second gear, the first gear being disposed on the output gear of a multi-stage gear, and the second gear being disposed on a transmission member; the first gear is a sector gear; the first gear is used to intermittently mesh with the second gear to drive the transmission member to rotate.

[0018] The above scheme enables the first gear to drive the transmission component to rotate by meshing with the second gear; in addition, by setting the first gear as a sector gear, the process of the handle transmission mechanism opening the circuit breaker and the process of the electric operating mechanism closing the circuit breaker can be independent of each other and do not interfere with each other.

[0019] In some embodiments, the second gear is a sector gear, and the transmission member is a sector plate structure; the projection of the second gear along the thickness direction of the housing at least partially coincides with the projection of the transmission member along the thickness direction.

[0020] The above solution can reduce the size of the overall component consisting of the second gear and the transmission component, thereby reducing the space occupied within the housing and providing space for other parts. Furthermore, it can further reduce the space occupied within the housing by not placing other parts around the second gear and the transmission component, thus reducing the size of the housing.

[0021] In some embodiments, the electric operating mechanism further includes a tripping assembly, which includes a first tripping component and a second tripping component. The first tripping component is disposed on the output gear of the multi-stage gear, and the second tripping component is disposed on the rotating component. The first tripping component is used to intermittently cooperate with the second tripping component to drive the rotating component to rotate, thereby causing the rotating component to drive the moving contact to separate from the stationary contact through the driving operating mechanism.

[0022] By configuring the electric operating mechanism to include a tripping component, the motor, when powered on, can drive a multi-stage gear to rotate, which in turn drives the tripping component to rotate. When the tripping component operates, it drives a rotating part to rotate, which in turn drives the operating mechanism to separate the moving contact from the stationary contact, thus tripping the circuit breaker. Furthermore, during the tripping process, the method of driving the rotating part to rotate via the tripping component allows the electric operating mechanism and the handle transmission mechanism to share the rotating part, reducing the need for other driving components and saving space inside the housing.

[0023] In some embodiments, the first tripping member includes a first protruding shank, and the second tripping member includes a second protruding shank; the first protruding shank is used to intermittently press against the second protruding shank to drive the rotating member to rotate.

[0024] The above scheme allows the first cam to rotate with the output gear of the multi-stage gear, thereby pressing the second cam to rotate, and the rotation of the second cam to drive the rotating component to rotate. It also allows the process of the handle transmission mechanism closing the circuit breaker and the process of the electric operating mechanism opening the circuit breaker to be independent of each other and not interfere with each other. Furthermore, it makes the structure of the first opening component and the second opening component simpler and easier to process and manufacture.

[0025] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the handle transmission mechanism mounted on the housing of the circuit breaker in some embodiments of this application.

[0028] Figure 2 This is a schematic diagram of the connection structure of the handle transmission mechanism, operating mechanism, moving contact and stationary contact in some embodiments of this application.

[0029] Figure 3 This is a schematic diagram of the first four-bar linkage in some embodiments of this application.

[0030] Figure 4 This is a schematic diagram of the second four-bar linkage in some embodiments of this application.

[0031] Figure 5 This is a schematic diagram of a plug-in circuit breaker in some embodiments of this application.

[0032] Figure 6 This is a schematic diagram of the electric operating mechanism in some embodiments of this application.

[0033] Figure 7 This is a schematic diagram of the closing component in some embodiments of this application.

[0034] Figure 8 This is a schematic diagram of the tripping component in some embodiments of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Handle transmission mechanism; 11. Handle; 12. Transmission component; 13. Rotating component; 14. First connecting component; 15. Second connecting component; 16. Third connecting component; 2. Operating mechanism; 3. Moving contact; 4. Stationary contact; 5. Electric operating mechanism; 51. Motor; 52. Multi-stage gear; 521. Gear one; 522. Gear two; 523. Gear three; 524. Gear four; 53. Closing assembly; 531. First closing component; 532. Second closing component; 54. Opening assembly; 541. First opening component; 542. Second opening component;

[0037] L1, first distance; L2, second distance;

[0038] X: length direction; Y: thickness direction; Z: height direction. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0041] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.

[0042] The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned 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.

[0045] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0046] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" or "linking" in mechanical structures can refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. In circuit structures, "connection" or "linking" can refer not only to a physical connection but also to an electrical connection or a signal connection, as long as the circuit is connected; a signal connection can refer to a connection via a circuit or a media. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0048] This application provides a handle transmission mechanism 1. Please refer to... Figure 1 , Figure 2 , Figure 1 This is a schematic diagram of the handle transmission mechanism 1 mounted on the housing in some embodiments of this application. Figure 2 This is a schematic diagram of the handle transmission mechanism 1, operating mechanism 2, moving contact 3, and stationary contact 4 in some embodiments of this application. Figure 1 , Figure 2 As shown, the handle transmission mechanism 1 is installed on the circuit breaker housing, which also houses an operating mechanism 2 for rotating the moving contact 3. The handle transmission mechanism 1 includes a handle 11, a transmission component 12, and a rotating component 13 connected in sequence. The rotating component 13 is driven to the operating mechanism 2. The handle 11 is rotated under force to drive the transmission component 12 to rotate, thereby causing the transmission component 12 to drive the rotating component 13 to rotate. When the rotating component 13 rotates, it drives the operating mechanism 2 to actuate, causing the moving contact 3 to contact or separate from the stationary contact 4 of the circuit breaker.

[0049] The handle transmission mechanism 1 is used to drive the operating mechanism 2 to move under the action of force, so that the operating mechanism 2 drives the moving contact 3 of the circuit breaker to contact or separate from the stationary contact 4 when it is activated. When the handle transmission mechanism 1 is installed in the housing, for example, a first shaft, a second shaft, and a third shaft can be provided on the housing, a first hole can be provided on the handle 11, a second hole can be provided on the transmission member 12, and a third hole can be provided on the rotating member 13. The handle 11 is rotatably connected to the first shaft through the first hole, the transmission member 12 is rotatably connected to the second shaft through the second hole, and the rotating member 13 is rotatably connected to the third shaft through the third hole.

[0050] The arrangement of the handle transmission mechanism 1 within the housing can be varied. In some embodiments, exemplarily, when the installation space reserved inside the housing for the handle transmission mechanism 1 is V-shaped or L-shaped, the handle 11, transmission component 12, and rotating component 13 can be arranged in a V-shape or L-shape according to the shape of the installation space. That is, the line connecting the first and second shafts and the line connecting the second and third shafts form a corresponding V-shape or L-shape, thereby improving the flexibility of the handle transmission mechanism 1's arrangement within the housing. In other embodiments, exemplarily, when the installation space reserved inside the housing for the handle transmission mechanism 1 is approximately straight, the first, second, and third shafts can be arranged in a straight line along the approximate length of the housing, so that the handle 11, transmission component 12, and rotating component 13 are arranged sequentially along the approximate length of the housing, achieving long-distance transmission. Wherein, Figure 1Taking the placement of the circuit breaker as an example, the length direction X of the housing refers to the left-right direction. It is important to note that the length direction X adapts to changes in the placement of the circuit breaker. The arrangement of the handle 11, transmission component 12, and rotating component 13 along the approximate length direction of the housing means that the angle between the line connecting the rotation axis of the handle 11 and the rotation axis of the transmission component 12 and the length direction X of the housing is no greater than 30°, and the angle between the line connecting the rotation axis of the transmission component 12 and the rotation axis of the rotating component 13 and the length direction X of the housing is no greater than 30°.

[0051] The handle 11 is a component used to rotate under force to drive the transmission component 12 to rotate. The handle 11 can rotate clockwise or counterclockwise after being subjected to force; for example, when the handle 11 is subjected to a clockwise force, the handle 11 can rotate clockwise and drive the transmission component 12 to rotate clockwise; when the handle 11 is subjected to a counterclockwise force, the handle 11 can rotate counterclockwise and drive the transmission component 12 to rotate counterclockwise.

[0052] There are several ways in which the handle 11 drives the transmission component 12 to rotate. In some embodiments, a movable groove can be provided on the handle 11, and a protrusion located in the movable groove can be provided at one end of the transmission component 12 near the handle 11. In this way, when the handle 11 rotates, the groove wall of the movable groove can apply force to the protrusion, causing the protrusion to rotate and drive the transmission component 12. In other embodiments, such as Figure 1 , Figure 2 As shown, a first connecting member 14 can be provided between the handle 11 and the transmission member 12. One end of the first connecting member 14 is rotatably connected to the handle 11, and the other end is rotatably connected to the transmission member 12, so that the handle 11 drives the transmission member 12 to rotate through the first connecting member 14. In this embodiment, for example, the first connecting member 14 can be a U-shaped rod. A first blind hole can be provided on the handle 11, and a second blind hole can be provided on the transmission member 12. One end of the first connecting member 14 can be located in the first blind hole, and the other end can be located in the second blind hole. It should be noted that when one end of the first connecting member 14 is rotatably connected to the handle 11 and the other end is rotatably connected to the transmission member 12, as... Figure 3 As shown, the handle 11, the first connector 14 and the transmission member 12 will form a first four-bar linkage to improve the stability of the handle 11 driving the transmission member 12 to rotate through the first connector 14.

[0053] The transmission component 12 is a component that drives the rotating component 13 to rotate under the driving action of the handle 11. The transmission component 12 can drive the rotating component 13 to rotate clockwise or counterclockwise; for example, when the transmission component 12 is driven by the handle 11 to rotate counterclockwise, it can drive the rotating component 13 to rotate clockwise; when the transmission component 12 is driven by the handle 11 to rotate clockwise, it can drive the rotating component 13 to rotate counterclockwise.

[0054] There are various ways in which the transmission member 12 drives the rotating member 13 to rotate. In some embodiments, a gear can be provided on both the transmission member 12 and the rotating member 13, so that when the transmission member 12 rotates, it drives the rotating member 13 to rotate through the meshing of the gears. In other embodiments, such as... Figure 1 , Figure 2 As shown, a second connecting member 15 can be provided between the transmission member 12 and the rotating member 13. One end of the second connecting member 15 is rotatably connected to the transmission member 12, and the other end is rotatably connected to the rotating member 13, so that the transmission member 12 drives the rotating member 13 to rotate through the second connecting member 15. In this embodiment, exemplarily, the second connecting member 15 can also be set as a U-shaped rod. The way in which the second connecting member 15 is rotatably connected to the transmission member 12 and the rotating member 13 can be the same as the way in which the first connecting member 14 is rotatably connected to the handle 11 and the transmission member 12, which will not be described again here. It should be noted that when one end of the second connecting member 15 is rotatably connected to the transmission member 12 and the other end is rotatably connected to the rotating member 13, as... Figure 4 As shown, the transmission component 12, the second connecting component 15, and the rotating component 13 will form a second four-bar linkage to improve the stability of the transmission component 12 driving the rotating component 13 to rotate through the second connecting component 15.

[0055] It should be noted that when the handle 11, the first connecting member 14, and the transmission member 12 form a first four-bar linkage, and the transmission member 12, the second connecting member 15, and the rotating member 13 form a second four-bar linkage, the handle transmission mechanism 1 will achieve more stable transmission because it includes two four-bar linkages. Furthermore, when the handle 11, the transmission member 12, and the rotating member 13 are arranged sequentially along the approximate length of the housing, the handle transmission mechanism 1 can not only achieve long-distance transmission, but also ensure the stability of long-distance transmission.

[0056] The rotating component 13 is a component that drives the operating mechanism 2 under the action of the transmission component 12. The rotating component 13 can drive the operating mechanism 2 to move the moving contact 3 closer to or away from the stationary contact 4. For example, when the rotating component 13 is driven by the transmission component 12 to rotate clockwise, it can drive the operating mechanism 2 to move the moving contact 3 closer to the stationary contact 4; when the rotating component 13 is driven by the transmission component 12 to rotate counterclockwise, it can drive the operating mechanism 2 to move the moving contact 3 away from the stationary contact 4.

[0057] There are several ways in which the rotating member 13 can drive the operating mechanism 2. In some embodiments, a protrusion extending toward the operating mechanism 2 can be provided on the rotating member 13, and a corresponding recess can be provided in the operating mechanism 2. At least a portion of the protrusion is disposed in the recess, so that when the rotating member 13 rotates, the protrusion applies force to the wall of the recess, thereby driving the operating mechanism 2 to move. In other embodiments, such as... Figure 1 , Figure 2As shown, a third connecting member 16 can also be provided between the rotating member 13 and the operating mechanism 2. One end of the third connecting member 16 is rotatably connected to the rotating member 13, and the other end is rotatably connected to the operating mechanism 2, so that the rotating member 13 drives the operating mechanism 2 to move through the third connecting member 16. In this embodiment, the third connecting member 16 can also be set as a U-shaped rod. The way in which the third connecting member 16 is rotatably connected to the rotating member 13 and the operating mechanism 2 can also be the same as the way in which the first connecting member 14 is rotatably connected to the handle 11 and the transmission member 12, which will not be described in detail here.

[0058] The operating mechanism 2 is a mechanism that, driven by the rotating member 13, drives the contact 3 to contact the stationary contact 4, or drives the moving contact 3 to separate from the stationary contact 4. For example, when the rotating member 13 rotates clockwise, it can drive the component connected to the moving contact 3 of the operating mechanism 2 to rotate clockwise, and during the clockwise rotation of this component, it drives the moving contact 3 to rotate clockwise, making contact with the stationary contact 4. Conversely, when the rotating member 13 rotates counterclockwise, it can drive the component connected to the moving contact 3 of the operating mechanism 2 to rotate counterclockwise, and during the counterclockwise rotation of this component, it drives the moving contact 3 to rotate counterclockwise, separating from the stationary contact 4.

[0059] In the technical solution of this application embodiment, the handle 11 can be driven by force to rotate the transmission component 12, which in turn drives the rotating component 13 to rotate. When the rotating component 13 rotates, it drives the operating mechanism 2 to operate, causing the moving contact 3 to contact or separate from the stationary contact 4, thereby closing or opening the circuit breaker. By configuring the handle transmission mechanism 1 to include the handle 11, the transmission component 12, and the rotating component 13, and making the three sequentially connected to drive the operating mechanism 2, the opening and closing action of the handle 11 is transmitted to the operating mechanism 2 in a straight or non-linear direction. Compared with directly driving the operating mechanism 2 through the handle 11, the position requirement of the handle transmission mechanism 1 is lower, and the layout within the housing is more flexible.

[0060] According to some embodiments of this application, please continue to refer to Figure 2 The other end of the first connector 14 is rotatably connected to the transmission member 12 near the handle 11; one end of the second connector 15 is rotatably connected to the transmission member 12 near the rotating member 13; the other end of the second connector 15 is rotatably connected to the rotating member 13 near the transmission member 12; and one end of the third connector 16 is rotatably connected to the rotating member 13 near the operating mechanism 2.

[0061] If the other end of the first connecting member 14 is rotatably connected to the transmission member 12 near the rotating member 13, and one end of the second connecting member 15 is rotatably connected to the transmission member 12 near the handle 11, then when the circuit breaker is closed, as the handle 11 drives the transmission member 12 to rotate counterclockwise via the first connecting member 14, the transmission member 12 drives the rotating member 13 to rotate clockwise via the second connecting member 15. This creates a possibility that the first connecting member 14 and the second connecting member 15 may come into contact with each other and interfere. Furthermore, when the first connecting member 14 and the second connecting member 15 come into contact, there will be force loss at the contact points, reducing the transmission performance of the handle transmission mechanism 1. Even further, when the first connecting member 14 and the second connecting member 15 come into contact multiple times, wear may occur between them, affecting the service life of the handle transmission mechanism 1. Furthermore, when the distance between the other end of the first connector 14 and the position where it is rotatably connected to the transmission member 12 and the position where one end of the second connector 15 is rotatably connected to the transmission member 12 is relatively close, as the transmission member 12 rotates counterclockwise and the rotating member 13 rotates clockwise, the second connector 15 may restrict the rotation of the first connector 14, resulting in a "jamming" phenomenon.

[0062] Similarly, if the other end of the second connecting member 15 is rotatably connected to the rotating member 13 near the operating mechanism 2, and one end of the third connecting member 16 is rotatably connected to the rotating member 13 near the transmission member 12, then when the circuit breaker is tripped, as the transmission member 12 rotates clockwise, the rotating member 13 rotates counterclockwise, and the component connected to the moving contact 3 in the operating mechanism 2 rotates counterclockwise, the aforementioned contact, interference, restriction, or "jamming" phenomenon will also occur.

[0063] In the technical solution of this application embodiment, by setting the position of the other end of the first connecting member 14 rotatably connected to the transmission member 12 close to the handle 11, and setting the position of one end of the second connecting member 15 rotatably connected to the transmission member 12 close to the rotating member 13, the possibility of contact, interference, restriction, and "jamming" between the first connecting member 14 and the second connecting member 15 can be reduced during the circuit breaker closing process. In addition, by setting the position of the other end of the second connecting member 15 rotatably connected to the rotating member 13 close to the transmission member 12, and setting the position of one end of the third connecting member 16 rotatably connected to the rotating member 13 close to the operating mechanism 2, the possibility of contact, interference, restriction, and "jamming" between the second connecting member 15 and the third connecting member 16 can be reduced during the circuit breaker opening process. Based on the above settings, the reliability and stability of the handle transmission mechanism 1 can be improved.

[0064] According to other embodiments of this application, please continue to refer to Figure 2The first connector 14 has a first distance L1 between its rotatable connection position on the handle 11 and the rotation axis of the handle 11, and the second connector 15 has a second distance L2 between its rotatable connection position on the rotating member 13 and the rotation axis of the rotating member 13. The first distance L1 is greater than the second distance L2.

[0065] In the above scheme, the first distance L1 is equivalent to the rotation radius of the first connector 14 at the rotational connection position on the handle 11, and the second distance L2 is equivalent to the rotation radius of the second connector 15 at the rotational connection position on the rotating member 13.

[0066] Normally, the handle 11 needs to be set to be at least partially exposed outside the housing so that it can be rotated under force. However, since the size of the handle 11 exposed outside the housing is limited, and the size of the part of the housing where the handle 11 is installed is limited, the handle 11 will be restricted by the housing when it is rotated under force, and cannot rotate a large angle.

[0067] In the above situation, if the first distance L1 is set to be less than the second distance L2, the rotational angular displacement of the handle 11 will be greater than that of the rotating component 13 during the same operation. This results in the handle 11 needing to rotate a larger angle before the rotating component 13 can be driven to rotate a smaller angle via the transmission component 12. Under this condition, when the handle 11 is subjected to insufficient force to rotate, the rotating component 13 may rotate too small an angle, failing to drive the component connected to the moving contact 3 in the operating mechanism 2 to rotate by a preset angle. Consequently, this component cannot drive the moving contact 3 to contact or separate from the stationary contact 4, which is detrimental to the closing or opening of the circuit breaker. Conversely, if the first distance L1 is set to be greater than the second distance L2, the rotational angular displacement of the handle 11 will be less than that of the rotating component 13 during the same process. This allows the rotating component 13 to rotate a larger angle when the handle 11 rotates a smaller angle, driving the component connected to the moving contact 3 in the operating mechanism 2 to rotate by a preset angle, which is beneficial to improving the reliability of the contact or separation between the moving contact 3 and the stationary contact 4.

[0068] In the technical solution of this application embodiment, by setting the first distance L1 to be greater than the second distance L2, the rotational angular displacement of the handle 11 can be greater than the rotational angular displacement of the rotating component 13. This allows the rotating component 13 to rotate a larger angle through the transmission component 12 when the handle 11 is rotated by a smaller angle. Consequently, when the rotating component 13 rotates a larger angle, it drives the component connected to the moving contact 3 in the operating mechanism 2 to rotate a larger angle, thereby causing the moving contact 3 to contact or separate from the stationary contact 4, which is more conducive to the closing or opening of the circuit breaker.

[0069] This application also provides a plug-in circuit breaker. See also... Figure 5 , Figure 5This is a schematic diagram of a plug-in circuit breaker in some embodiments of this application. For example... Figure 5 As shown, the plug-in circuit breaker includes a housing, the aforementioned handle transmission mechanism 1, an operating mechanism 2 for rotating the moving contact 3, and an electric operating mechanism 5. The electric operating mechanism 5 includes a motor 51, a multi-stage gear 52, and a closing assembly 53 connected in sequence. The closing assembly 53 is also connected to a transmission member 12. Under the drive of the motor 51, the multi-stage gear 52 drives the transmission member 12 to rotate through the closing assembly 53, thereby causing the transmission member 12 to drive the rotating member 13 to rotate. When the rotating member 13 rotates, it drives the operating mechanism 2 to actuate, so as to make the moving contact 3 contact the stationary contact 4 of the circuit breaker.

[0070] The electric operating mechanism 5 is a mechanism for tripping or opening the plug-in circuit breaker under electrical action. When the electric operating mechanism 5 is installed in the housing, at least part of it can be fixed to the housing, and another part can be rotatably connected to the housing. The electric operating mechanism 5 can extend along the height direction Z of the housing toward the handle transmission mechanism 1.

[0071] The motor 51 is a component that provides driving force to the multi-stage gear 52 under the action of electricity. The motor 51 can be fixed inside a motor cavity provided on the housing. In this way, when the motor 51 is working, the cavity wall can limit the movement of the motor 51 within the housing and reduce the possibility of the motor 51 moving within the housing and affecting other components. The motor 51 can be configured to rotate in only one direction, which can extend the service life of the motor 51 and, consequently, the service life of the plug-in circuit breaker.

[0072] The multi-stage gear 52 is a component that drives the closing assembly 53 to operate under the drive of the motor 51. Each stage of the multi-stage gear 52 can be rotatably connected to the housing. For example, each stage of the gear can be connected to a corresponding mounting shaft provided on the housing, so as to rotate around the mounting shaft under the drive of the motor 51. The number of stages of the multi-stage gear 52 can be three, four, or five. The specific number of stages can be set according to actual needs, and this application embodiment does not make any special limitation in this regard.

[0073] In some embodiments, such as Figure 6As shown, the multi-stage gear 52 can be configured as a four-stage gear, comprising gear 1 521, gear 2 522, gear 3 523, and gear 4 524 connected in sequence. Gear 1 521 and gear 4 524 are single-layer gears, while gear 2 522 and gear 3 523 are double-layer gears, with the two layers having different diameters. Gear 1 521 can be located at the output end of the motor 51 to rotate with it. Gear 1 521 meshes with the larger diameter gear in gear 2 522, the smaller diameter gear in gear 2 522 meshes with the larger diameter gear in gear 3 523, and the smaller diameter gear in gear 3 523 meshes with gear 4 524. This meshing method increases the transmission ratio of the multi-stage gear 52, thereby increasing the rotational speed of gear 4 524.

[0074] The closing assembly 53 is a component that drives the transmission member 12 to rotate under the driving action of the multi-stage gear 52. The closing assembly 53 can be configured in various forms. In some embodiments, the closing assembly 53 may include a first driving rod and a second driving rod. The first driving rod may be disposed on the output gear of the multi-stage gear 52 (e.g., the aforementioned gear 4 524), and the second driving rod may be disposed on the transmission member 12. In this way, when the output gear rotates, it can push the second driving rod to rotate through the first driving rod, thereby driving the transmission member 12 to rotate during the rotation of the second driving rod. In other embodiments, such as... Figure 7 As shown, the closing assembly 53 may further include a first gear 531 and a second gear 532. The first gear 531 is disposed on the output gear of the multi-stage gear 52, and the second gear 532 is disposed on the transmission member 12. Thus, when the output gear rotates, the first gear 531 can drive the second gear 532 to rotate, and the second gear 532, in turn, drives the transmission member 12 to rotate. It should be noted that when the first gear 531 is disposed on the output gear, it can be coaxially disposed with the output gear and fixed to it, or it can be directly fixed to the output gear. This embodiment does not impose any special limitation on the manner in which the first gear 531 is disposed on the output gear. Furthermore, the manner in which the second gear 532 is disposed on the transmission member 12 can be the same as the manner in which the first gear 531 is disposed on the output gear, and will not be elaborated further here.

[0075] To facilitate understanding of the process of the moving contact 3 contacting the stationary contact 4 under the drive of the electric operating mechanism 5, the following example uses a multi-stage gear 52 as a four-stage gear and the closing assembly 53 including a first gear 531 and a second gear 532, and combines this with... Figure 6 , Figure 7 Please provide a detailed explanation.

[0076] Please see Figure 6 , Figure 7When the motor 51 is powered on, it rotates counterclockwise. The gear 521 located at the output end of the motor 51 rotates counterclockwise along with the counterclockwise rotation of the motor 51. When the gear 521 rotates counterclockwise, it drives the gear 522 to rotate clockwise. When the gear 522 rotates clockwise, it drives the gear 523 to rotate counterclockwise. When the gear 523 rotates counterclockwise, it drives the gear 524 to rotate clockwise. When the gear 524 rotates clockwise, it drives the first gear 531 to rotate clockwise. When the first gear 531 rotates clockwise to the side close to the transmission member 12, it meshes with the second gear 532 to drive the second gear 532 to rotate counterclockwise. When the second gear 532 rotates counterclockwise, it causes the transmission member 12 to rotate counterclockwise. When the transmission member 12 rotates counterclockwise, it drives the rotating member 13 to rotate clockwise. During the clockwise rotation of the rotating member 13, it drives the component connected to the moving contact 3 in the operating mechanism 2 to rotate clockwise, thereby causing the moving contact 3 to contact the stationary contact 4.

[0077] In the technical solution of this application embodiment, firstly, the handle transmission mechanism 1 can be flexibly installed inside the housing of a plug-in circuit breaker with limited internal space; secondly, by setting the electric operating mechanism 5 to include a motor 51, a multi-stage gear 52, and a closing assembly 53, and driving the closing assembly 53 to the transmission component 12 in the handle transmission mechanism 1, the motor 51, after being energized, can drive the multi-stage gear 52 to rotate, and when the multi-stage gear 52 rotates, it drives the closing assembly 53 to operate, so that the closing assembly 53 drives the transmission component 12 to rotate, and then through the rotation of the transmission component 12 and the rotating component 13 and the operation mechanism 2, the moving contact 3 contacts the stationary contact 4, thus closing the circuit breaker; in addition, during the closing process, by driving the transmission component 12 to rotate through the closing assembly 53, so that the transmission component 12 drives the rotating component 13 to rotate, the electric operating mechanism 5 and the handle transmission mechanism 1 can share the transmission component 12 and the rotating component 13, reducing the setting of other driving components and saving the space occupied inside the housing.

[0078] Based on the above embodiments, it should be noted that the first gear 531 and the second gear 532 in the closing assembly 53 can be configured in various ways. For example, when the first gear 531 is configured as a cylindrical gear, the second gear 532 can be configured as a cylindrical gear or a sector gear.

[0079] In some embodiments, when both the first gear 531 and the second gear 532 are cylindrical gears, the first gear 531 and the second gear 532 are always engaged, without intermittent meshing. In this embodiment, when closing is required, the counterclockwise rotation of the motor 51 drives the first gear 531 to rotate clockwise and drives the second gear 532 to rotate counterclockwise, thereby causing the transmission component 12 to rotate counterclockwise to achieve the closing of the circuit breaker. When opening is required, since the first gear 531 and the second gear 532 are always engaged, the opening can only be achieved by rotating the motor 51 clockwise, and cannot be achieved by rotating the transmission component 12 through the handle 11 of the manual transmission mechanism 1. Therefore, once the electric operating mechanism 5 uses such a closing component 53, the handle transmission mechanism 1 cannot continue to be used, and the opening and closing of the circuit breaker can only be achieved by the forward and reverse rotation of the motor 51.

[0080] In some other embodiments, when the first gear 531 is configured as a cylindrical gear and the second gear 532 is configured as a sector gear, whether the first gear 531 and the second gear 532 mesh or not is determined by the position of the second gear 532. When the second gear 532 rotates to the side closer to the first gear 531, the two mesh. When the second gear 532 rotates to the side farther away from the first gear 531, the two disengage. That is to say, the first gear 531 and the second gear 532 can achieve intermittent meshing. In this embodiment, when closing is required, as the motor 51 rotates counterclockwise, the first gear 531 rotates clockwise and drives the second gear 532 to rotate intermittently counterclockwise, thereby causing the transmission component 12 to rotate intermittently counterclockwise until the second gear 532 disengages from the first gear 531. However, even if the first gear 531 and the second gear 532 can achieve intermittent engagement, this setup can only achieve one closing operation. This is because when opening is required after closing, even if the motor 51 rotates clockwise, it cannot change the position of the second gear 532 to engage with the first gear 531. In other words, the circuit breaker cannot be opened by the electric operating mechanism 5. Similarly, when the handle transmission mechanism 1 attempts to open the circuit breaker, it will also be limited by the motor 51 and will be unable to operate. It is evident that when the first gear 531 is set as a cylindrical gear, regardless of whether the second gear 532 is set as a cylindrical gear or a sector gear, the handle transmission mechanism 1 cannot realize the opening and closing of the circuit breaker. Only when both the first gear 531 and the second gear 532 are set as cylindrical gears can the opening and closing of the circuit breaker be realized by controlling the forward and reverse rotation of the motor.

[0081] Therefore, in some embodiments, the first gear 531 may be configured as a sector gear. The first gear 531 intermittently meshes with the second gear 532 to drive the transmission member 12 to rotate.

[0082] When the first gear 531 is set as a sector gear, the second gear 532 can be set as a cylindrical gear or a sector gear.

[0083] In some embodiments, when the first gear 531 is configured as a sector gear and the second gear 532 is configured as a cylindrical gear, whether the first gear 531 and the second gear 532 mesh depends on the position of the first gear 531. In this embodiment, when closing is required, the motor 51 is started, causing the motor 51 to rotate counterclockwise. As the motor 51 rotates counterclockwise, when the teeth of the first gear 531 rotate to one end near the transmission member 12, it will drive the second gear 532 to rotate counterclockwise, thereby causing the transmission member 12 to rotate counterclockwise. When the teeth of the first gear 531 rotate to one end near the rotating member 13, the first gear 531 no longer meshes with the second gear 532. Therefore, the aforementioned handle 11 can drive the transmission member 12 to rotate clockwise to open the circuit breaker. After the circuit breaker is tripped, the aforementioned handle 11 can also drive the transmission component 12 to rotate counterclockwise to close the circuit breaker, or start the motor 51 so that the motor 51 drives the first gear 531 to repeat the above rotation to re-engage with the second gear 532 and close the circuit breaker.

[0084] In some embodiments, when the first gear 531 and the second gear 532 are both sector gears, whether the first gear 531 and the second gear 532 mesh depends not only on the position of the first gear 531 but also on the position of the second gear 532. In this embodiment, the way the first gear 531 drives the second gear 532 to rotate is the same as when the second gear 532 is a circular gear. That is, as long as the first gear 531 rotates to the side away from the second gear 532 and disengages from the second gear 532, the handle 11 can still drive the transmission member 12 to rotate clockwise to open the circuit breaker. After opening, the aforementioned handle 11 can also drive the transmission member 12 to rotate counterclockwise to close the circuit breaker, or start the motor to drive the first gear to repeat the above rotation to re-engage with the second gear and close the circuit breaker.

[0085] As can be seen, when the first gear 531 is set as a sector gear, regardless of whether the second gear 532 is set as a cylindrical gear or a sector gear, as the motor 51 drives counterclockwise, the handle 11 can drive the transmission component 12 to rotate clockwise, thus opening or closing the circuit breaker. In other words, the process of the handle transmission mechanism 1 opening or closing the circuit breaker and the process of the electric operating mechanism 5 closing the circuit breaker can be independent of each other and do not interfere with each other.

[0086] In the technical solution of this application embodiment, by setting the first gear 531 as a sector gear, the process of the handle transmission mechanism 1 opening and closing the circuit breaker and the process of the electric operating mechanism 5 closing the circuit breaker can be independent of each other and do not interfere with each other.

[0087] According to other embodiments of this application, please continue to refer to Figure 5 and Figure 7 The second gear 532 is a sector gear, and the transmission component 12 is a sector plate structure. Along the thickness direction Y of the housing, the projection of the second gear 532 and the projection of the transmission component 12 at least partially coincide.

[0088] by Figure 5 Taking the orientation of the circuit breaker as an example, the thickness direction Y of the housing refers to the front-to-back direction.

[0089] Based on the foregoing statements, whether the second gear 532 is configured as a circular gear or a sector gear, it will not affect the closing of the circuit breaker by the electric operating mechanism 5. However, if the second gear 532 is configured as a circular gear, the overall size of the component consisting of the second gear 532 and the transmission member 12 will increase, and the space occupied inside the circuit breaker will also increase. In addition, when the transmission member 12 is configured as a circular plate structure, the overall size of the component consisting of the second gear 532 and the transmission member 12 will also increase.

[0090] When the second gear 532 is configured as a sector gear and the transmission component 12 is configured as a sector plate structure, the space occupied by the integral component consisting of the second gear 532 and the transmission component 12 in the housing will be reduced compared to the circular gear and the circular plate structure, which makes it easier to arrange other components.

[0091] Furthermore, along the thickness direction Y of the housing, when the projection of the second gear 532 at least partially coincides with the projection of the transmission member 12, and no other parts need to be arranged around the second gear 532 and the transmission member 12, the integral component consisting of the second gear 532 and the transmission member 12 can occupy less space in the housing, which can further reduce the space occupied in the housing and thus reduce the size of the housing.

[0092] According to other embodiments of this application, please continue to refer to Figure 6 See also Figure 8 ,like Figure 6 , Figure 8 As shown, the electric operating mechanism 5 also includes a tripping assembly 54, which includes a first tripping component 541 and a second tripping component 542. The first tripping component 541 is disposed on the output gear of the multi-stage gear 52, and the second tripping component 542 is disposed on the rotating component 13. The first tripping component 541 is used to intermittently cooperate with the second tripping component 542 to drive the rotating component 13 to rotate. When the rotating component 13 rotates, it drives the operating mechanism 2 to act, so as to separate the moving contact 3 from the stationary contact 4.

[0093] The tripping assembly 54 is used to drive the rotating member 13 to rotate, so as to drive the operating mechanism 2 to operate when the rotating member 13 rotates, thereby causing the moving contact 3 to separate from the stationary contact 4.

[0094] The first tripping component 541 is a component used to drive the second tripping component 542. The second tripping component 542 is a component that, driven by the first tripping component 541, causes the rotating component 13 to rotate.

[0095] When the first braking element 541 is disposed on the output gear of the multi-stage gear 52, it can be fixed to the surface of the output gear so as to rotate with the rotation of the output gear. The first braking element 541 can be made of a material with high rigidity (such as phenolic plastic, polyurethane plastic, epoxy plastic, unsaturated polyester plastic, furan plastic, silicone resin and / or acrylic resin, etc.). In this way, when the first braking element 541 and the second braking element 542 are intermittently engaged, deformation is not easily caused, which is beneficial for driving the rotating element 13 to rotate by a predetermined angle through the second braking element 542.

[0096] When the second tripping component 542 is disposed on the rotating component 13, it can be disposed on the circumferential surface of the rotating component 13 or on the plate surface of the rotating component 13. This application embodiment does not make any special limitation on this, as long as the second tripping component 542 can cooperate with the first tripping component 541 and drive the rotating component 13 to rotate. The material of the second tripping component 542 and the first tripping component 541 can be the same, which will not be elaborated here.

[0097] The first tripping element 541 and the second tripping element 542 can be configured in various forms. In some embodiments, the first tripping element 541 can be configured as the aforementioned first gear, and the second tripping element 542 can be configured as a third gear adapted to the first gear. Thus, when the first gear rotates with the output gear to a side closer to the rotating member 13, it can mesh with the third gear, and drive the rotating member 13 to rotate via the third gear. In other embodiments, such as... Figure 8 As shown, the first tripping member 541 includes a first protruding shank, and the second tripping member 542 includes a second protruding shank. The first protruding shank is used to intermittently press against the second protruding shank to drive the rotating member 13 to rotate. In this embodiment, when the first protruding shank rotates to the side close to the rotating member 13, it can press against the second protruding shank and drive the rotating member 13 to rotate through the second protruding shank. Furthermore, the part of the first protruding shank that presses against the second protruding shank can be set as a planar structure to increase the area of ​​the first protruding shank pressing against the second protruding shank, thereby making it easier for the second protruding shank to drive the rotating member 13 to rotate under the pressing action of the first protruding shank.

[0098] It should be noted that when the first closing component 531 is configured as the first gear, the second closing component 532 is configured as the second gear, and the first opening component 541 is configured to include the first protruding shank, and the second opening component 542 is configured to include the second protruding shank, the closing component 53 and the opening component 54 can be arranged on two planes along the thickness direction Y of the housing, so as to reduce the possibility of mutual interference between the closing component 53 and the opening component 54.

[0099] To facilitate understanding of the process of the moving contact 3 separating from the stationary contact 4 under the drive of the electric operating mechanism 5, the following example uses a multi-stage gear 52 as a four-stage gear, with the first tripping component 541 including a first convex shank and the second tripping component 542 including a second convex shank, and combines this with... Figure 6 , Figure 8 Please provide a detailed explanation.

[0100] Please see Figure 6 , Figure 8 After the motor 51 is powered on, it rotates counterclockwise. The gear 521 located at the output end of the motor 51 rotates counterclockwise with the motor 51, and in turn causes the gear 522 to rotate clockwise, the gear 523 to rotate counterclockwise, and the gear 524 to rotate clockwise. When the gear 524 rotates clockwise, it drives the first convex shank to rotate clockwise. When the first convex shank rotates clockwise to the side close to the rotating member 13, it presses against the second convex shank, causing the second convex shank to drive the rotating member 13 to rotate counterclockwise. During the counterclockwise rotation of the rotating member 13, the component connected to the moving contact 3 in the operating mechanism 2 rotates counterclockwise, so as to drive the moving contact 3 to separate from the stationary contact 4.

[0101] It is worth mentioning that when the first tripping component 541 is configured to include a first protruding handle and the second tripping component 542 is configured to include a second protruding handle, when the first tripping component 541 rotates to the side closer to the transmission component 12 without contacting the second tripping component 542, the handle 11 can drive the moving contact 3 to contact the stationary contact 4 to achieve closing, or it can drive the moving contact to separate from the stationary contact after closing to achieve opening. Therefore, by configuring the first tripping component 541 to include a first protruding handle and the second tripping component 542 to include a second protruding handle, the process of the handle transmission mechanism 1 opening and closing the circuit breaker and the process of the electric operating mechanism 5 opening the circuit breaker can be independent of each other and do not interfere with each other.

[0102] In the technical solution of this application embodiment, firstly, by configuring the electric operating mechanism 5 to include a tripping component 54, the motor 51, after being energized, can drive the multi-stage gear 52 to rotate, and when the multi-stage gear 52 rotates, it drives the tripping component 54 to rotate, so that the tripping component 54 drives the rotating member 13 to rotate when it operates. Then, the rotation of the rotating member 13 drives the operating mechanism 2 to separate the moving contact 3 from the stationary contact 4, thus tripping the circuit breaker. Secondly, in the tripping process, by driving the rotating member 13 to rotate through the tripping component 54, the electric operating mechanism 5 and the handle transmission mechanism 1 can share the rotating member 13, reducing the setting of other driving components and saving the space occupied inside the housing. Finally, by configuring the first tripping member 541 to include a first protruding handle and the second tripping member 542 to include a second protruding handle, the process of the handle transmission mechanism 1 closing the circuit breaker and the process of the electric operating mechanism 5 tripping the circuit breaker can be independent of each other and do not interfere with each other.

[0103] According to other embodiments of this application, please continue to refer to Figure 5 When the closing assembly 53 includes the aforementioned first gear 531 and second gear 532, and both the first gear 531 and the second gear 532 are sector gears, and the opening assembly 54 includes the aforementioned first cam and second cam, along the thickness direction Y of the housing, the projection of the first cam and the projection of the first gear 531 can be set to at least partially coincide.

[0104] In this embodiment, the process of the handle transmission mechanism 1 and the electric operating mechanism 5 controlling the circuit breaker to open or close is as follows.

[0105] When the electric operating mechanism 5 controls the circuit breaker to close, the motor 51 drives the first gear 531 and the first cam to rotate clockwise through the output gear of the multi-stage gear 52. When the two rotate to the side close to the second gear 532, the first gear 531 meshes with the second gear 532 and drives the transmission component 12 to rotate counterclockwise through the second gear 532. When the transmission component 12 rotates counterclockwise, the circuit breaker is closed through the rotating component 13 and the operating mechanism 2.

[0106] After the electric operating mechanism 5 controls the circuit breaker to close, the circuit breaker can be opened through the handle transmission mechanism 1. For example, when the first gear 531 and the first cam rotate to the upper part of the output gear, the first gear 531 disengages from the second gear 532. At this time, the transmission component 12 can be driven to rotate clockwise through the handle 11 to open the circuit breaker. Alternatively, the circuit breaker can be opened through the electric operating mechanism 5. For example, the motor 51 can drive the first gear 531 and the first cam to continue rotating clockwise through the output gear of the multi-stage gear 52. When the two rotate to the side close to the rotating component 13, the first cam presses against the second cam, causing the second cam to drive the rotating component 13 to rotate counterclockwise. When the rotating component 13 rotates counterclockwise, the circuit breaker is opened through the operating mechanism 2.

[0107] After the circuit breaker is tripped by the handle transmission mechanism 1 or the electric operating mechanism 5, it can be closed again by the handle transmission mechanism 1. For example, when the first gear 531 and the first cam rotate to the lower part of the output gear, the first cam disengages from the second cam. At this time, the transmission component 12 can be driven to rotate counterclockwise by the handle 11 to trip the circuit breaker. Alternatively, the circuit breaker can be closed by the electric operating mechanism 5 as the motor 51 continues to rotate.

[0108] In the technical solution of this application embodiment, by setting the closing assembly 53 to include a sector-shaped first gear 531 and a sector-shaped second gear 532, and setting the opening assembly 54 to include a first convex shank and a second convex shank, and setting the projection of the first convex shank and the projection of the first gear 531 to at least partially overlap along the thickness direction Y of the housing, it is possible to achieve that the processes of the electric operating mechanism 5 controlling the circuit breaker opening and closing and the handle transmission mechanism 1 controlling the circuit breaker opening and closing do not interfere with each other.

[0109] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0110] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A handle transmission mechanism, characterized in that, The circuit breaker housing is also equipped with an operating mechanism for rotating the moving contact. The handle transmission mechanism includes a handle, a transmission component, and a rotating component that are sequentially connected in a driving manner, wherein the rotating component is driven to the operating mechanism; The handle is used to rotate under force to drive the transmission component to rotate, thereby causing the transmission component to drive the rotating component to rotate. When the rotating component rotates, it drives the operating mechanism to operate, thereby causing the moving contact to contact or separate from the stationary contact of the circuit breaker. It also includes a first connector, a second connector, and a third connector; one end of the first connector is rotatably connected to the handle, and the other end is rotatably connected to the transmission component; one end of the second connector is rotatably connected to the transmission component, and the other end is rotatably connected to the rotating component; one end of the third connector is rotatably connected to the rotating component, and the other end is rotatably connected to the operating mechanism. The other end of the first connector is rotatably connected to the transmission member near the handle; one end of the second connector is rotatably connected to the transmission member near the rotating member; the other end of the second connector is rotatably connected to the rotating member near the transmission member; and one end of the third connector is rotatably connected to the rotating member near the operating mechanism. The first connector has a first distance between its rotatable connection position on the handle and the rotation axis of the handle, and the second connector has a second distance between its rotatable connection position on the rotating member and the rotation axis of the rotating member, wherein the first distance is greater than the second distance.

2. The handle transmission mechanism according to claim 1, characterized in that, The handle, the transmission component, and the rotating component are arranged sequentially along the approximate length of the housing.

3. A plug-in circuit breaker, characterized in that, It includes a housing, a handle transmission mechanism as described in claim 1 or 2, an operating mechanism for driving the moving contact to rotate, and an electric operating mechanism; The electric operating mechanism includes a motor, a multi-stage gear, and a closing assembly connected in sequence, wherein the closing assembly is also connected to the transmission component. The multi-stage gear is used to drive the transmission component to rotate through the closing assembly under the driving action of the motor, so that the transmission component drives the operating mechanism through the rotating component to make the moving contact contact with the stationary contact of the circuit breaker.

4. The plug-in circuit breaker according to claim 3, characterized in that, The closing assembly includes a first gear and a second gear, the first gear being disposed on the output gear of the multi-stage gear, and the second gear being disposed on the transmission member; the first gear is a sector gear; The first gear is used to intermittently mesh with the second gear to drive the transmission component to rotate.

5. The plug-in circuit breaker according to claim 4, characterized in that, The second gear is a sector gear, and the transmission component is a sector plate structure; along the thickness direction of the housing, the projection of the second gear and the projection of the transmission component at least partially overlap.

6. The plug-in circuit breaker according to claim 3, characterized in that, The electric operating mechanism further includes a tripping assembly, which includes a first tripping component and a second tripping component. The first tripping component is disposed on the output gear of the multi-stage gear, and the second tripping component is disposed on the rotating component. The first tripping component is used to intermittently cooperate with the second tripping component to drive the rotating component to rotate, thereby causing the rotating component to drive the moving contact to separate from the stationary contact through the operating mechanism.

7. The plug-in circuit breaker according to claim 6, characterized in that, The first tripping component includes a first protruding shank, and the second tripping component includes a second protruding shank; The first protruding shank is used to intermittently press against the second protruding shank to drive the rotating component to rotate.

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