A reset device and circuit breaker

Abstract

This application relates to the field of circuit breaker technology, and more particularly to a reset device and a circuit breaker. The reset device includes a lever, a reset rod, and a transmission unit. The lever is connected to the circuit breaker's opening and closing system, and the reset rod is connected to the circuit breaker's energy storage system. The transmission unit is located between the reset rod and the lever. The transmission unit includes a push-swing and a bracket. The push-swing is oscillatingly connected to the bracket, which is fixedly connected to the circuit breaker. The push-swing includes a first side and a second side arranged opposite to each other. The lever moves towards the transmission unit, with the first side located on the lever's movement trajectory. The lever strikes the first side, causing the push-swing to oscillate towards the reset rod. The reset rod is located on the movement trajectory of the second side, which strikes the reset rod, causing it to perform a reset action along the striking direction. The reset device of this application eliminates the need to increase the structural length of the lever and reset rod, thus ensuring the structural strength and transmission stability of the reset rod and lever, and improving the service life of the circuit breaker.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and in particular to a reset device and a circuit breaker. Background Technology

[0002] A circuit breaker includes an energy storage system and a closing / opening system. The energy storage system needs to be linked with the closing / opening system so that it can store energy according to the actions of the closing / opening system. The energy storage system includes a reset lever, and the closing / opening system includes a lever. The actions of the closing / opening system affect the actions of the lever, and the storage and release of energy in the energy storage system affects the actions of the reset lever. Therefore, the linkage between the closing / opening system and the energy storage system can be achieved by establishing a connection between the lever and the reset lever, and transmitting the operating torque through this connection.

[0003] In related technologies, the distance between the reset rod and the lever is relatively large, which requires increasing the structural length of both the reset rod and the lever to achieve the connection between them. This results in uneven distribution of the torque transmitted between the reset rod and the lever on the excessively long connection structure, affecting the structural strength of the reset rod and the lever, as well as the stability of the transmission between the reset rod and the lever, and thus affecting the long-term service life of the circuit breaker. Summary of the Invention

[0004] This application provides a reset device and a circuit breaker, which ensures the structural strength and transmission stability of the reset rod and lever, thereby improving the long-term service life of the circuit breaker.

[0005] In a first aspect, this application provides a reset device applied to a circuit breaker. The reset device includes a lever, a reset rod, and a transmission unit. The lever is connected to the circuit breaker's opening and closing system, and the reset rod is connected to the circuit breaker's energy storage system. The transmission unit is located between the reset rod and the lever. The transmission unit includes a push-swing and a bracket. The push-swing is oscillatingly connected to the bracket, which is fixedly connected to the circuit breaker. The push-swing includes a first side and a second side disposed opposite to each other. The lever moves toward the transmission unit, and the first side is located on the lever's movement trajectory. The lever strikes the first side, causing the push-swing to oscillate toward the reset rod. The reset rod is located on the movement trajectory of the second side, which strikes the reset rod, causing the reset rod to perform a reset action along the striking direction.

[0006] According to the description of the first aspect, the transmission unit is located between the lever and the reset rod, with the first and second sides of the push pendulum in the transmission unit facing the lever and the reset rod respectively, so that the push pendulum can contact the lever and the reset rod respectively. First, the lever moves along its trajectory until it strikes the first side of the push pendulum; second, after being struck, the push pendulum swings around its connection point with the bracket, and its second side swings accordingly until it strikes the reset rod; finally, after being struck by the second side, the reset rod moves in the direction of the strike, thereby driving the energy storage system connected to it to complete the reset and energy storage. Compared with the related technology, which requires increasing the structural length of the reset rod and lever to achieve action transmission, the reset device provided in this application effectively converts the action of the opening and closing system into a reset drive for the energy storage system through a progressive action transmission from the lever and transmission unit to the reset rod, forming a compact and reliable transmission system. It does not require increasing the structural length of the lever and the reset rod, avoiding uneven distribution of the torque transmitted between the reset rod and the lever on an excessively long connection structure, ensuring the structural strength and transmission stability of the reset rod and the lever, thereby improving the long-term service life of the circuit breaker.

[0007] In one possible design, the reset device also includes a rotating shaft. The rotating shaft comprises a first connecting portion, a second connecting portion, and a third connecting portion connected sequentially along the axial direction. The radial dimension of the first connecting portion is smaller than the radial dimension of the second connecting portion, giving the second connecting portion a first stepped surface. The radial dimension of the second connecting portion is smaller than the radial dimension of the third connecting portion, giving the third connecting portion a second stepped surface. The axial and radial directions are two mutually perpendicular directions of the rotating shaft. A first connecting hole is provided on the bracket, which is adapted to the first connecting portion. A second connecting hole is provided at one end of the push-swing, which is adapted to the second connecting portion. When the rotating shaft passes through the transmission unit, the first connecting portion is located in the first connecting hole, and the first stepped surface abuts against the side of the bracket facing the push-swing. When the rotating shaft passes through the transmission unit, the second connecting portion is located in the second connecting hole, and the second stepped surface abuts against the side of the push-swing away from the bracket.

[0008] Based on the description of the above embodiments, the rotating shaft adopts a segmented variable diameter design along the axial direction. Through the first connecting part, the second connecting part, and the third connecting part with different radial dimensions, the first connecting part / second connecting part is matched with the corresponding first connecting hole / second connecting hole, and works together with the first step surface and the second step surface formed by the radial dimension difference to achieve precise axial positioning of the push pendulum, thereby achieving reliable connection of the push pendulum in the circuit breaker, thereby improving the stability of the reset device and maintaining the long service life of the circuit breaker.

[0009] In one possible design, the reset device also includes a torsion spring. The torsion spring is sleeved on the second connecting portion and located between the bracket and the push-pendulum. The torsion spring includes a first lever arm and a second lever arm extending in opposite directions. The first lever arm is connected to the side of the bracket near the lever. The second lever arm is connected to the side of the push-pendulum near the reset rod.

[0010] Based on the description of the above embodiments, the torsion spring is sleeved on the rotating shaft and connected between the bracket and the push-pendulum. While ensuring the torsion spring's own fixed installation, it also creates conditions for the connection of the first and second lever arms to the bracket and the push-pendulum, respectively. The first lever arm is connected to the side of the bracket near the lever, fixing it in the circuit breaker near the lever. The second lever arm is connected to the side of the push-pendulum near the reset rod, allowing it to swing together with the push-pendulum and form an angle with the first lever arm for energy storage. The energy storage effect of the torsion spring enables the second lever arm to drive the push-pendulum to swing towards the first lever arm, i.e., the lever, thereby resetting the push-pendulum. This allows the reset device to perform the next reset action, ensuring continuity of use and guaranteeing that the circuit breaker can perform multiple opening / closing / tripping actions, thus improving the circuit breaker's product performance.

[0011] In one possible design, the support has a first slot on the side near the lever. A first hook is provided at the end of the first lever arm. The first hook engages with the first slot.

[0012] Based on the description of the above embodiments, the first lever arm is firmly anchored to the bracket by the engagement of the first slot and the first hook, thereby achieving a reliable connection between the first lever arm and the bracket, preventing the first lever arm from falling off, and ensuring that the transmission unit can be smoothly reset.

[0013] In one possible design, a second slot is provided on the side of the push-pole closest to the reset rod. A second hook is provided at the end of the second lever arm. The second hook engages with the second slot.

[0014] Based on the description of the above embodiments, the second lever arm is firmly anchored on the push pendulum by the engagement of the second slot and the second hook, thereby achieving a reliable connection between the second lever arm and the push pendulum, preventing the second lever arm from falling off, and ensuring that the transmission unit can be smoothly reset.

[0015] In one possible design, a first locking angle is provided on the side of the push-pole closest to the reset rod. The first locking angle has a first opening facing the reset rod. The projection of the first opening in the swing direction of the push-pole is a first projection. When the push-pole swings toward the reset rod, at least a portion of the reset rod is located in the first projection, such that at least a portion of the reset rod enters the first locking angle through the first opening and abuts against the inner wall of the first locking angle in at least one direction.

[0016] Based on the description of the above embodiments, when the push-swing swings, the first locking angle moves accordingly. The projected position relationship between the first opening and the reset rod can guide part of the reset rod into the enclosed space of the first locking angle, so that the surface of this part of the reset rod can abut against the inner wall in any direction of the first locking angle, effectively limiting the swaying or deviation of the reset rod during the transmission process, and transmitting the kinetic force of the push-swing to the reset rod more stably and accurately, thereby ensuring the stability of the action transmission.

[0017] In one possible design, a second locking angle is provided on the side of the push pendulum closest to the lever. The second locking angle has a second opening facing the lever. The projection of the second opening in the direction of movement of the push pendulum is a second projection. When the lever swings toward the push pendulum, at least a portion of the lever is located in the second projection, such that at least a portion of the lever enters the second locking angle through the second opening and abuts against the inner wall of the second locking angle in at least one direction.

[0018] Based on the description of the above embodiments, when the lever is in motion, the relationship between the second opening on the push pendulum and the projected position of the lever can guide part of the lever into the enclosed space of the second locking angle, so that the surface of this part of the lever can abut against the inner wall in any direction of the second locking angle, effectively limiting the swaying or deviation of the push pendulum during the transmission process, and transmitting the lever's action force to the transmission unit more stably and accurately, thereby ensuring the stability of the action transmission.

[0019] In one possible design, a first extension plate is provided on the side of the push-paddle closer to the lever. The first extension plate has a first contact surface, which is coplanar with a first side surface. A second extension plate is provided on the side of the push-paddle closer to the reset rod. The second extension plate has a second contact surface, which is coplanar with a second side surface.

[0020] Based on the description of the above embodiments, the first contact surface / second contact surface provided by the first extension plate / second extension plate is coplanar with the first side surface / second side surface, which can increase the contact area between the push and the lever / reset rod, thereby reducing the damage caused by contact pressure and stress concentration in the reset device of this application. At the same time, by improving the stability of its transmission action, the long service life and product performance of the circuit breaker are greatly improved.

[0021] In one possible design, a limiting boss is provided on the side of the support facing the pendulum. The limiting boss is located on the swing path of the pendulum.

[0022] Based on the description of the above embodiments, the limiting structure set on the bracket is used to limit the swing amplitude of the push-switch, so as to avoid the excessive swing amplitude of the push-switch causing the action transmission to be interrupted, thereby ensuring the continuity and stability of the action transmission in the reset device and improving the product performance of the circuit breaker.

[0023] Secondly, this application provides a circuit breaker, including a closing / opening system, an energy storage system, and a reset device as described in any of the above embodiments. The reset device links the closing / opening system and the energy storage system, enabling the energy storage system to perform energy storage operations according to the actions of the closing / opening system.

[0024] The circuit breaker provided in the second aspect above has the same beneficial effects as the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of a reset device in one embodiment of this application.

[0027] Figure 2 This is a schematic diagram of a push-pendulum structure in an embodiment of this application.

[0028] Figure 3 This is an exploded view of the transmission unit in an embodiment of this application.

[0029] Figure 4 This is a schematic diagram of one structure of the rotating shaft in an embodiment of this application.

[0030] Figure 5 for Figure 3 An enlarged view of section A.

[0031] Figure 6 This is a schematic diagram of a torsion spring in one embodiment of this application.

[0032] Figure 7 for Figure 1 A magnified view of section B.

[0033] Figure 8 for Figure 2 A view from another perspective.

[0034] Figure 9 This is a schematic diagram of a transmission unit in one embodiment of this application.

[0035] Explanation of reference numerals in the attached figures: 100-Reset device; 1-Lever; 2-Reset rod; 3-Transmission unit; 31-Push swing; 311-First side; 312-Second side; 313-Second connecting hole; 314-Second slot; 32-Bracket; 321-First connecting hole; 322-First slot; 4-Rotating shaft; 41-First connecting part; 42-Second connecting part; 43-Third connecting part; 44-First step surface; 45-Second step surface; 5-Torsion spring; 51-First lever arm; 511-First hook; 52-Second lever arm; 521-Second hook; 6-First angle; 7-Second angle; 8-First extension plate; 81-First contact surface; 9-Second extension plate; 91-Second contact surface; 10-First structural surface; 11-Limiting boss; X-First direction; L-Axial; D-Radial. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. 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 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.

[0040] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0041] 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 "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used 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.

[0042] Furthermore, the descriptions of directions such as the X direction, Y direction, and Z direction used to explain the operation and construction of the components in this embodiment are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change to correspond to the changes.

[0043] 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.

[0044] 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).

[0045] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] A circuit breaker includes an energy storage system and a closing / opening system. The energy storage system needs to be linked with the closing / opening system so that it can store energy according to the actions of the closing / opening system. The energy storage system includes a reset lever, and the closing / opening system includes a lever. The actions of the closing / opening system affect the actions of the lever, and the storage and release of energy in the energy storage system affects the actions of the reset lever. Therefore, the linkage between the closing / opening system and the energy storage system can be achieved by establishing a connection between the lever and the reset lever, and transmitting the operating torque through this connection.

[0047] Specifically, the operation of the circuit breaker system includes closing, tripping, and opening actions. After a tripping action, the reset lever in the energy storage system pops out, releasing the energy. At this time, the handle in the circuit breaker system is in the tripped position. When the circuit breaker system needs to close after a tripping action, the handle in the tripped position needs to move to the opening position. The opening position refers to the position of the handle after the circuit breaker system has performed an opening action. During the movement of the handle from the tripped position to the opening position, the lever structure connected to the handle causes the reset lever to return to its original position, allowing the energy storage system to re-store energy, enabling the circuit breaker system to perform a closing action.

[0048] In related technologies, the distance between the reset rod and the lever is relatively large, and the reset rod and the lever are directly connected to achieve the reset of the reset rod. This requires both the reset rod and the lever to increase their structural length to achieve the connection relationship. As a result, the torque transmitted between the reset rod and the lever is unevenly distributed on the excessively long connection structure, which affects the structural strength of the reset rod and the lever, and thus affects the long-term service life of the circuit breaker.

[0049] Based on this, this application provides a reset device and a circuit breaker. By setting a transmission unit between the lever and the reset rod, the structural length of the lever and the reset rod is reduced, avoiding uneven distribution of the torque transmitted between the reset rod and the lever on an excessively long connection structure, ensuring the structural strength of the reset rod and the lever, thereby improving the long-term service life of the circuit breaker. The following is in conjunction with... Figures 1-9 Provide a detailed description.

[0050] Firstly, such as Figure 1 and Figure 2 As shown, this application provides a reset device 100 applied to a circuit breaker. The reset device 100 includes a lever 1, a reset rod 2, and a transmission unit 3. The lever 1 is connected to the circuit breaker's opening and closing system, and the reset rod 2 is connected to the circuit breaker's energy storage system. The transmission unit 3 is located between the reset rod 2 and the lever 1. The transmission unit 3 includes a push-swing 31 and a bracket 32. The push-swing 31 is oscillatingly connected to the bracket 32, and the bracket 32 ​​is fixedly connected to the circuit breaker. The push-swing 31 includes a first side 311 and a second side 312 arranged opposite to each other. The lever 1 moves toward the transmission unit 3, and the first side 311 is located on the movement trajectory of the lever 1. The lever 1 strikes the first side 311 and drives the push-swing 31 to swing toward the reset rod 2. The reset rod 2 is located on the movement trajectory of the second side 312, and the second side 312 strikes the reset rod 2 and drives the reset rod 2 to perform a reset action in the striking direction.

[0051] Lever 1 is the first-stage transmission component used to transmit the reset action of the energy storage system. It is connected to the circuit breaker's opening and closing system to receive the action input from the system. One side of lever 1 faces the transmission unit 3 and can move in a specific direction to strike the push-swing 31 in the transmission unit 3. Specifically, lever 1 is connected to a handle in the opening and closing system. When the handle moves from the tripped position to the open position, the handle drives lever 1 to move until lever 1 strikes the push-swing 31.

[0052] The reset lever 2 is an output component used to perform the reset action. It is connected to the energy storage system of the circuit breaker and is configured to move in a specific direction when struck to drive the energy storage system to complete the reset, thereby storing energy for the next closing action of the circuit breaker.

[0053] Among them, such as Figure 1 As shown, the transmission unit 3 is an action conversion and transmission mechanism located between the lever 1 and the reset rod 2. Its core function is to convert and transmit the striking action of the lever 1 to the reset rod 2. Specifically, the transmission unit 3 is located between the reset rod 2 and the lever 1, meaning that the transmission unit 3 is located on the spatial line connecting the lever 1 and the reset rod 2, so that the transmission unit 3 can transmit the action of the lever 1 to the reset rod 2.

[0054] In some specific embodiments, lever 1, transmission unit 3, and reset rod 2 can move along the following path: Figure 1 The first direction X shown is arranged sequentially on a straight line to achieve the shortest transmission distance between lever 1 and reset rod 2, thereby reducing the installation space of reset device 100 in circuit breaker, which is beneficial to reduce the production cost of circuit breaker by reducing its size.

[0055] Furthermore, such as Figure 1 As shown, the transmission unit 3 consists of a push-pendulum 31 and a bracket 32. The bracket 32 ​​is a fixed support structure within the transmission unit 3. It is fixedly connected to the circuit breaker housing or internal frame, providing a stable swing fulcrum for the push-pendulum 31 and ensuring the accuracy and reliability of the action transmission path.

[0056] Among them, the push-swing 31 is the core motion conversion component in the transmission unit 3. It is oscillatingly connected to the bracket 32 ​​via a rotating shaft or other means, allowing it to swing freely within a certain angle.

[0057] like Figure 2 As shown, the push pendulum 31 has a first side 311 and a second side 312 arranged opposite to each other: the first side 311 is a specific working surface of the push pendulum 31 facing the lever 1, which is set on the movement trajectory of the lever 1 to withstand the striking action of the lever 1, thus serving as the input end of the push pendulum 31 receiving the action force; the second side 312 is another specific working surface of the push pendulum 31 facing the reset lever 2, which is configured such that its movement trajectory passes through the reset lever 2, so that it can strike the reset lever 2 when the push pendulum 31 is driven by the lever 1 to swing, thus serving as the output end of the push pendulum 31 receiving the action force. Specifically, the orientation of the first side 311 and the second side 312 arranged opposite to each other can be as follows: Figure 1 The first direction X shown is the arrangement direction of lever 1, transmission unit 3 and reset rod 2. Therefore, the first side 311 can face lever 1 and be located on the movement trajectory of lever 1; the second side 312 can face reset rod 2 and have its movement trajectory pass through reset rod 2.

[0058] According to the description of the first aspect, the transmission unit 3 is located between the lever 1 and the reset rod 2, such that the first side 311 and the second side 312 of the push pendulum 31 in the transmission unit 3 face the lever 1 and the reset rod 2 respectively, so that the push pendulum 31 can contact the lever 1 and the reset rod 2 respectively. First, the lever 1 moves along its trajectory until it strikes the first side 311 of the push pendulum 31; second, after being struck, the push pendulum 31 swings around its connection point with the bracket 32, and its second side 312 swings accordingly until it strikes the reset rod 2; finally, after being struck by the second side 312, the reset rod 2 moves in the direction of the strike, thereby driving the energy storage system connected to it to complete the reset energy storage. Compared to related technologies that require increasing the structural length of the reset rod 2 and lever 1 to achieve action transmission, the reset device 100 provided in this application effectively converts the action of the opening and closing system into a reset drive for the energy storage system through a progressive action transmission from lever 1 and transmission unit 3 to the reset rod 2. This forms a compact and reliable transmission system, eliminating the need to increase the structural length of lever 1 and reset rod 2. It also avoids uneven distribution of the torque transmitted between reset rod 2 and lever 1 on an excessively long connection structure, ensuring the structural strength and transmission stability of reset rod 2 and lever 1, thereby improving the long-term service life of the circuit breaker.

[0059] Furthermore, such as Figures 3-5 As shown, in some embodiments, the reset device 100 further includes a rotating shaft 4. The rotating shaft 4 includes a first connecting portion 41, a second connecting portion 42, and a third connecting portion 43 connected sequentially along the axial direction L. The radial dimension D of the first connecting portion 41 is smaller than the radial dimension D of the second connecting portion 42, giving the second connecting portion 42 a first stepped surface 44. The radial dimension D of the second connecting portion 42 is smaller than the radial dimension D of the third connecting portion 43, giving the third connecting portion 43 a second stepped surface 45. The axial direction L and the radial direction D are two mutually perpendicular directions in the rotating shaft 4. A first connecting hole 321 is provided on the bracket 32, which is adapted to the first connecting portion 41. A second connecting hole 313 is provided at one end of the push-swing 31, which is adapted to the second connecting portion 42. When the rotating shaft 4 passes through the transmission unit 3, the first connecting portion 41 is located in the first connecting hole 321, and the first stepped surface 44 abuts against the side of the bracket 32 ​​facing the push-swing 31. When the rotating shaft 4 passes through the transmission unit 3, the second connecting part 42 is located in the second connecting hole 313, and the second stepped surface 45 abuts against the side of the pusher 31 away from the bracket 32.

[0060] Among them, the rotating shaft 4 is a shaft-shaped component in the transmission unit 3 used to realize the swingable connection between the push-swing 31 and the bracket 32.

[0061] Wherein, radial direction D and axial direction L can be two mutually perpendicular directions in the rotation axis 4. Specifically, as follows: Figure 3 and Figure 4As shown, radial direction D is the direction in the cross-section of shaft 4. Axial direction L is the direction in which shaft 4 passes through, and it is also the direction in which bracket 32 ​​and push-switch 31 are arranged in the circuit breaker.

[0062] Furthermore, the rotating shaft 4 adopts a segmented variable diameter design along the axial direction L, specifically including the following three connecting parts with different radial dimensions D: Firstly, such as Figure 4 As shown, the first connecting part 41 is the shaft segment with the smallest radial dimension D on the rotating shaft 4, located at the end of the rotating shaft 4. Its radial dimension D is designed to match the first connecting hole 321 opened on the bracket 32, allowing the first connecting part 41 to pass through the first connecting hole 321, achieving initial positioning and support of the rotating shaft 4 on the bracket 32. Specifically, one end of the first connecting part 41 along the axial direction L is connected to the second connecting part 42, and the other end can be riveted or screwed onto the bracket 32 ​​to fix the rotating shaft 4. Wherein, as... Figure 5 As shown, the first connecting hole 321 can be a through hole structure opened on the bracket 32.

[0063] Secondly, such as Figure 4 As shown, the second connecting part 42 is an intermediate shaft segment on the rotating shaft 4 located between the first connecting part 41 and the third connecting part 43. Its radial dimension D is larger than that of the first connecting part 41 but smaller than that of the third connecting part 43. This shaft segment is adapted to the second connecting hole 313 opened at one end of the push pendulum 31, so that the second connecting part 42 passes through the second connecting hole 313, providing a swing fulcrum for the push pendulum 31. Specifically, a second connecting hole 313 is opened at one end of the push pendulum 31, and the rotating shaft 4 passes through the second connecting hole 313, so that one end of the push pendulum 31 rotates around the rotating shaft 4. The other end of the push pendulum 31 swings with the length between its two ends as the radius and with the end used to connect the rotating shaft 4 as the center. The first side surface 311 and the second side surface 312 are both provided at the other end of the push pendulum 31, so that the other end of the push pendulum 31 can transmit a reset action to the energy storage structure. Among them, as shown in the figure Figure 2 As shown, the second connecting hole 313 can be a through hole structure opened on the pusher 31.

[0064] Thirdly, such as Figure 4 As shown, the third connecting part 43 is the shaft segment with the largest radial dimension D on the rotating shaft 4, and is usually located at the other end of the rotating shaft 4. Its dimension is larger than that of the second connecting part 42, and it is used to form the axial L limiting structure of the push pendulum 31.

[0065] Furthermore, the third connecting part 43 can be combined with the following two stepped surfaces to jointly complete the axial L-limiting of the push pendulum 31: Firstly, such as Figure 3 and Figure 4As shown, the first stepped surface 44 is an annular end face facing the bracket 32, formed by the radial dimension difference D between the first connecting part 41 and the second connecting part 42. When the rotating shaft 4 passes through the first connecting hole 321, the first stepped surface 44 abuts against the side of the bracket 32 ​​facing the push-swing 31, thereby restricting the rotating shaft 4 from moving further in the direction of the push-swing 31, thus achieving axial L positioning of the rotating shaft 4 on one side of the bracket 32.

[0066] Secondly, such as Figure 3 and Figure 4 As shown, the second stepped surface 45 is an annular end face facing away from the bracket 32, formed by the radial dimension difference D between the second connecting part 42 and the third connecting part 43. When the rotating shaft 4 passes through the second connecting hole 313, the second stepped surface 45 abuts against the side of the push-swing 31 facing away from the bracket 32, thereby restricting the movement of the rotating shaft 4 in the direction away from the bracket 32, and working together with the first stepped surface 44 to precisely clamp and limit the push-swing 31 in the expected axial L installation position.

[0067] Third, when the second step surface 45 abuts against the side of the push pendulum 31 away from the bracket 32, the third connecting part 43 can be a limiting structure block in which the push pendulum 31 disengages from the rotating shaft 4 along the axial direction L, which improves the stability of the limiting and thus ensures the reliability of the axial positioning of the push pendulum 31, thereby ensuring the reliable connection of the push pendulum 31 in the circuit breaker.

[0068] According to the description of the above embodiment, the rotating shaft 4 adopts a segmented variable diameter design along the axial direction L. Through the first connecting part 41, the second connecting part 42 and the third connecting part 43 with different radial dimensions D, the first connecting part 41 / the second connecting part 42 cooperates with the corresponding first connecting hole 321 / the second connecting hole 313, and works together with the first step surface 44 and the second step surface 45 formed by the difference in radial dimensions D to achieve precise axial positioning of the push pendulum 31 in L, thereby achieving reliable connection of the push pendulum 31 in the circuit breaker, thereby improving the stability of the reset device 100 and maintaining the long service life of the circuit breaker.

[0069] Preferably, in some embodiments, the axial L dimension of the second connecting portion 42 may be greater than the axial L dimension of the second connecting hole 313.

[0070] According to the description of the above embodiment, the axial L dimension of the second connecting hole 313 is equal to the thickness of the push pendulum 31 in that direction, and the axial L dimension of the second connecting part 42 is greater than the axial L dimension of the second connecting hole 313, so that there is at least a one-sided gap between the push pendulum 31 and the side of the support 32 facing the push pendulum 31 / the second step surface 45, so as to avoid friction and jamming between the push pendulum 31 and the support 32 when the push pendulum 31 swings, thereby enabling the push pendulum 31 to swing smoothly, and thus enabling the energy storage structure to achieve smooth energy storage.

[0071] Furthermore, in some embodiments, such as Figure 6 and Figure 7 As shown, the reset device 100 also includes a torsion spring 5. The torsion spring 5 is sleeved on the second connecting part 42 and located between the bracket 32 ​​and the pusher 31. The torsion spring 5 includes a first lever arm 51 and a second lever arm 52 extending in different directions. The first lever arm 51 is connected to the side of the bracket 32 ​​near the lever 1. The second lever arm 52 is connected to the side of the pusher 31 near the reset rod 2.

[0072] The torsion spring 5 is a helical elastic element sleeved on the second connecting part 42 of the rotating shaft 4 and housed between the bracket 32 ​​and the push pendulum 31. It is configured to generate torque through its own elastic deformation to apply force to the push pendulum 31 so that the push pendulum 31 returns to its original position after the action is transmitted, thereby ensuring the reliability and stability of the operation of the transmission unit 3.

[0073] The first lever arm 51 is a straight segment or hook portion extending in one direction from the helical body of the torsion spring 5. This lever arm is fixedly connected to the side of the bracket 32 ​​near the lever 1. Its main function is to serve as the fixed end of the torsion spring 5, provide a fulcrum for the reaction force of the torsion spring 5, and transmit the installation torque of the torsion spring 5 to the bracket 32.

[0074] The second lever arm 52 is a straight segment or hook portion extending from the helical body of the torsion spring 5 in another direction, and its extension direction is different from that of the first lever arm 51. This lever arm is fixedly connected to the side of the push pendulum 31 near the reset rod 2. Its main function is to act as the actuating end of the torsion spring 5, directly applying the elastic force of the torsion spring 5 to the push pendulum 31, thereby exerting a continuous elastic influence on the reset tendency of the push pendulum 31.

[0075] Specifically, the first lever arm 51 and the second lever arm 52 extend in different directions, creating an angle between them. When the first lever arm 51 / second lever arm 52 is subjected to tension / thrust, the angle changes, causing the torsion spring 5 to store energy. When the first lever arm 51 and second lever arm 52 lose the tension / thrust, the elastic potential energy stored in the torsion spring 5 restores the angle to its initial value.

[0076] In some specific embodiments, the first lever arm 51 is fixedly connected to the bracket 32, and the second lever arm 52 is fixedly connected to the push-pendulum 31, at which point the second lever arm 52 is in its initial position. Since the first lever arm 51 is close to the lever 1 and the second lever arm 52 is close to the reset rod 2, the distance between the lever 1 and the reset rod 2 creates an angle between the first lever arm 51 and the second lever arm 52, which is the initial angle. The bracket 32 ​​is fixedly connected to the circuit breaker, meaning the first lever arm 51 is fixed. The swinging of the push-pendulum 31 causes the second lever arm 52 to swing towards the reset rod 2. At this time, the second lever arm 52 is subjected to tension, and the angle increases, giving the torsion spring 5 a reset potential energy, which means the second lever arm 52 has a tendency to swing towards the first lever arm 51, i.e., towards the lever 1. When the reset lever 2 completes the reset, the lever 1 removes the force applied to the push pendulum 31. At this time, the movement tendency of the second lever arm 52 causes the push pendulum 31 to swing toward the lever 1 until the second lever arm 52 returns to the initial position and the included angle returns to the initial angle, thus completing the reset of the push pendulum 31, so that the reset device 100 can perform the next reset action.

[0077] According to the description of the above embodiment, the torsion spring 5 is sleeved on the rotating shaft 4 and connected between the bracket 32 ​​and the push-pendulum 31. While achieving the fixed installation of the torsion spring 5 itself, it creates conditions for the connection between the first lever arm 51 and the second lever arm 52 and the bracket 32 ​​and the push-pendulum 31, respectively. The first lever arm 51 is connected to the side of the bracket 32 ​​near the lever 1, so that the first lever arm 51 is fixed in the circuit breaker near the lever 1. The second lever arm 52 is connected to the side of the push-pendulum 31 near the reset rod 2, so that the second lever arm 52 can swing together with the push-pendulum 31, and at the same time form an angle with the first lever arm 51 for energy storage. The energy storage function of the torsion spring 5 enables the second lever arm 52 to drive the push-pendulum 31 to swing towards the first lever arm 51, that is, the lever 1, thereby realizing the reset of the push-pendulum 31, so that the reset device 100 can perform the next reset action, that is, it has the continuity of use, thereby ensuring that the circuit breaker can perform multiple opening / closing / tripping actions, improving the product performance of the circuit breaker.

[0078] Preferably, in some embodiments, the axial dimension L of the second connecting part 42 is greater than the sum of the thicknesses of the push pendulum 31 and the torsion spring 5 in the axial direction L, which can prevent the torsion spring 5 from completely encroaching on the gap between the push pendulum 31 and the side of the support 32 facing the push pendulum 31 / second step surface 45, so as to ensure that the push pendulum 31 can swing smoothly.

[0079] Furthermore, in order to achieve a reliable connection between the first lever arm 51 and the support 32, in some specific embodiments, such as Figures 5-7 As shown, a first slot 322 is provided on the side of the bracket 32 ​​near the lever 1. A first hook 511 is provided at the end of the first lever arm 51. The first hook 511 is engaged in the first slot 322.

[0080] Among them, such as Figure 5 As shown, the first slot 322 can be a groove structure formed on the first side surface 311, or it can be a bend angle between surfaces, used to accommodate and limit the first hook 511. Specifically, the bend angle between surfaces can be the included angle generated by bending the first side surface 311 inward, that is, the included angle between the two bent surfaces generated by bending towards the reset rod 2.

[0081] Among them, such as Figure 6 and Figure 7 As shown, the first hook 511 is a curved or hook-shaped structure formed at the end of the first lever arm 51, used to engage and hook into the first slot 322.

[0082] According to the description of the above embodiments, the first lever arm 51 is firmly anchored on the bracket 32 ​​by the snap-fit ​​of the first slot 322 and the first hook 511, thereby realizing a reliable connection between the first lever arm 51 and the bracket 32, preventing the first lever arm 51 from falling off, so as to ensure that the transmission unit 3 can be reset smoothly.

[0083] Furthermore, in order to achieve a reliable connection between the second lever arm 52 and the push pendulum 31, in some specific embodiments, such as Figures 6-8 As shown, a second slot 314 is provided on the side of the push-swing 31 near the reset rod 2. A second hook 521 is provided at the end of the second lever arm 52. The second hook 521 is engaged in the second slot 314.

[0084] Among them, such as Figure 8 As shown, the second slot 314 can be a groove structure formed on the second side surface 312, or it can be a bend angle between surfaces, used to accommodate and limit the second hook 521. Specifically, the bend angle between surfaces can be the included angle generated by the inward bending of the second side surface 312, that is, the included angle between the two bent surfaces generated by bending towards the lever 1.

[0085] Among them, such as Figure 7 and Figure 8 As shown, the second hook 521 is a curved or hook-shaped structure formed at the end of the second lever arm 52, used to engage and hook into the second slot 314.

[0086] According to the description of the above embodiment, the second lever arm 52 is firmly anchored on the push pendulum 31 by the engagement of the second slot 314 and the second hook 521, thereby realizing a reliable connection between the second lever arm 52 and the push pendulum 31, preventing the second lever arm 52 from falling off, so as to ensure that the transmission unit 3 can be smoothly reset.

[0087] Furthermore, in order to ensure the stability of the transmission between the transmission unit 3 and the reset rod 2, this application also includes the following design: In some embodiments, such as Figure 8As shown, a first locking angle 6 is provided on the side of the push-swing 31 near the reset rod 2. The first locking angle 6 has a first opening facing the reset rod 2. The projection of the first opening in the swing direction of the push-swing 31 is the first projection. When the push-swing 31 swings towards the reset rod 2, at least a portion of the reset rod 2 is located in the first projection, so that at least a portion of the reset rod 2 enters the first locking angle 6 through the first opening and abuts against the inner wall of the first locking angle 6 in at least one direction.

[0088] The first locking angle 6 is an enclosing space with a specific contour formed on the side of the pusher 31 near the reset rod 2, such that the first locking angle 6 has at least two inner walls for abutting against the reset rod 2 in at least two directions. Specifically, the specific contour can be U-shaped or V-shaped.

[0089] In some specific embodiments, a protruding structure may be provided on the second side 312, and an angle may be formed between one of the outer surfaces of the protruding structure and the second side 312, so that the second side 312 and the outer surface form a V-shaped first corner 6, at which time the first corner 6 has two inner walls, the second side 312 and the outer surface.

[0090] In other embodiments, a groove structure can be provided on the second side 312, so that the inner surface of the groove structure forms a U-shaped or V-shaped first corner 6. In this case, the number of inner walls of the first corner 6 is equal to the number of inner surfaces of the groove, and it can have three or two inner walls.

[0091] It should be noted that when the second slot 314 in the above embodiment exists on the side of the pusher 31 used to strike the reset rod 2, the first locking angle 6 is set to avoid the second slot 314.

[0092] The first opening is a notch or channel formed on the first retaining angle 6 to allow the reset lever 2 to enter, making the first retaining angle 6 an enclosing space that can accommodate part of the reset lever 2. Specifically, the size and shape of the first opening are configured to allow at least part of the reset lever 2 to enter the interior of the first retaining angle 6 through the opening on its movement trajectory. At the same time, the edge of the first opening can be used to capture and initially limit the reset lever 2, that is, to guide the reset lever 2 into the first retaining angle 6.

[0093] The first projection refers to the two-dimensional region formed on a plane perpendicular to the swing direction after projecting the outline of the first opening parallel to the swing direction of the push-pole 31. The first projection defines the effective spatial window into which the reset rod 2 can be included by the first opening. Therefore, only the portion of the reset rod 2 located within this window in space meets the condition for being guided into the first locking angle 6 by the first opening.

[0094] According to the description of the above embodiment, when the push pendulum 31 swings, the first locking angle 6 moves accordingly. The projected position relationship between the first opening and the reset rod 2 can guide part of the reset rod 2 into the enclosed space of the first locking angle 6, so that the surface of this part of the reset rod 2 can abut against the inner wall in any direction of the first locking angle 6, effectively limiting the shaking or deviation of the reset rod 2 during the transmission process, and transmitting the action force of the push pendulum 31 to the reset rod 2 more stably and accurately, thereby ensuring the stability of the action transmission.

[0095] Preferably, the size and shape of the enclosed space of the first locking angle 6 can be adapted to the size and shape of at least part of the reset rod 2, so that when the part of the reset rod 2 is enclosed in the first angle, multiple inner walls in the first locking angle 6 can simultaneously abut against the reset rod 2 in multiple directions, thereby making the connection between the reset rod 2 and the push pendulum 31 more reliable, and further improving the stability of the action transmission.

[0096] Furthermore, in order to ensure the stability of the transmission between transmission unit 3 and lever 1, this application also includes the following design: In some embodiments, such as Figure 8 As shown, the push-swing 31 has a second locking angle 7 on the side near the lever 1. The second locking angle 7 has a second opening facing the lever 1. The projection of the second opening in the moving direction of the push-swing 31 is the second projection. When the lever 1 swings toward the push-swing 31, at least a portion of the lever 1 is located in the second projection, so that at least a portion of the lever 1 enters the second locking angle 7 through the second opening and abuts against the inner wall of the second locking angle 7 in at least one direction.

[0097] The second locking angle 7 is an enclosing space with a specific profile formed on the side of the push pendulum 31 near the lever 1, such that the second locking angle 7 has at least two inner walls for abutting against the lever 1 in at least two directions. Specifically, the specific profile can be U-shaped or V-shaped.

[0098] In some specific embodiments, a protruding structure can be provided on the first side surface 311, and an angle can be formed between one of the outer surfaces of the protruding structure and the first side surface 311, so that the first side surface 311 and the outer surface form a V-shaped second corner 7. At this time, the second corner 7 has two inner walls, the first side surface 311 and the outer surface.

[0099] In other embodiments, a groove structure can be provided on the first side surface 311, so that the inner surface of the groove structure forms a U-shaped or V-shaped first corner 6. In this case, the number of inner walls of the second corner 7 is equal to the number of inner surfaces of the groove, and it can have three or two inner walls.

[0100] The second opening is a notch or channel formed on the second retaining angle 7 to allow the lever 1 to enter, making the second retaining angle 7 an enclosing space that can accommodate part of the lever 1. Specifically, the size and shape of the second opening are configured to allow at least part of the lever 1 to enter the interior of the second retaining angle 7 through the opening on its trajectory. At the same time, the edge of the second opening can be used to capture and initially limit the lever 1, that is, to guide the lever 1 into the second retaining angle 7.

[0101] The second projection refers to the two-dimensional region formed on a plane perpendicular to the direction of the movement of the second opening after projecting the outline of the second opening parallel to the direction of the movement of the push-swing 31. The second projection defines the effective spatial window through which the lever 1 can be included by the second opening. Therefore, only the portion of the lever 1 located within this window in space meets the condition for being guided into the second angle 7 by the second opening.

[0102] According to the description of the above embodiment, when the lever 1 moves, the projection position relationship between the second opening on the push pendulum 31 and the lever 1 can guide part of the lever 1 into the enclosed space of the second corner 7, so that the surface of this part of the lever 1 can form contact with the inner wall in any direction of the second corner 7, effectively limiting the swaying or deviation of the push pendulum 31 during the transmission process, and transmitting the action force of the lever 1 to the transmission unit 3 more stably and accurately, thereby ensuring the stability of the action transmission.

[0103] Preferably, the size and shape of the enclosed space of the second corner 7 can be adapted to the size and shape of at least part of the push-swing 31, so that when the part of the push-swing 31 is enclosed in the second corner, multiple inner walls in the second corner 7 can simultaneously abut against the push-swing 31 in multiple directions, thereby making the connection between the lever 1 and the transmission unit 3 more reliable, and further improving the stability of the action transmission.

[0104] Furthermore, in some embodiments, such as Figure 2 , Figure 8 and Figure 9 As shown, a first extension plate 8 is provided on the side of the push-swing 31 near the lever 1. The first extension plate 8 has a first contact surface 81, which is coplanar with the first side surface 311. A second extension plate 9 is provided on the side of the push-swing 31 near the reset rod 2. The second extension plate 9 has a second contact surface 91, which is coplanar with the second side surface 312.

[0105] Among them, such as Figure 2As shown, the first extension plate 8 and the second extension plate 9 can be plate-like structures perpendicular to the first structural surface 10 of the push-switch 31. The first structural surface 10 is the connecting surface between the first side surface 311 and the second side surface 312. Both the first side surface 311 and the second side surface 312 are perpendicular to the first structural surface 10, so that the first extension plate 8 and the second extension plate 9 have a first contact surface 81 and a second contact surface 91 that are coplanar with the first side surface 311 and the second side surface 312.

[0106] Specifically, such as Figure 2 As shown, the first contact surface 81 is coplanar with the first side surface 311 to increase the contact area between the lever 1 and the pusher 31. Similarly, the second contact surface 91 is coplanar with the second side surface 312 to increase the contact area between the pusher 31 and the reset rod 2.

[0107] Increasing the contact area between the pusher 31 and the lever 1 / reset rod 2 can have at least the following advantages: Firstly, increasing the contact area can reduce the contact pressure, thereby reducing the damage to the pusher 31, lever 1, and reset rod 2 during the striking action.

[0108] Secondly, increasing the contact area can disperse the impact stress generated by the pusher 31 and lever 1 / reset rod 2 during the striking action, so that the impact force can be more evenly distributed on a larger contact area, thereby reducing the damage to the pusher 31, lever 1 and reset rod 2 caused by stress concentration.

[0109] Third, increasing the contact area can improve the reliability of the contact between the pusher 31 and the lever 1 / reset rod 2 and the success rate of the transmission action, thereby improving the transmission stability of the reset device 100 in this application.

[0110] According to the description of the above embodiments, the first contact surface 81 / second contact surface 91 provided by the first extension plate 8 / second extension plate 9 is coplanar with the first side surface 311 / second side surface 312, which can increase the contact area between the push-swing 31 and the lever 1 / reset rod 2, thereby reducing the damage caused by contact pressure and stress concentration in the reset device 100 of this application. At the same time, by improving the stability of its transmission action, the long-term service life and product performance of the circuit breaker are greatly improved.

[0111] Furthermore, in some embodiments, such as Figure 5 and Figure 9 As shown, a limiting boss 11 is provided on the side of the bracket 32 ​​facing the pusher 31. The limiting boss 11 is located on the swing path of the pusher 31.

[0112] The limiting boss 11 can be a structural block that protrudes from the side of the support 32 facing the pendulum 31 and extends toward the pendulum 31. The dimension of the limiting structure protruding from the side of the support 32 facing the pendulum 31 is greater than the distance between the support 32 and the pendulum 31, and the limiting structure is located on the swing path of the pendulum 31 so that the pendulum 31 can smoothly abut against the limiting structure during the swing. Specifically, the distance between the support 32 and the pendulum 31 refers to the distance between the side of the support 32 facing the pendulum 31 and the side of the pendulum 31 facing the support 32.

[0113] The swing amplitude of the push pendulum 31 can include the swing amplitude towards the lever 1 and the swing amplitude towards the reset rod 2. The swing amplitude of the push pendulum 31 towards the reset rod 2 can be limited by the torsion spring 5 in the aforementioned embodiment. Therefore, the limiting boss 11 can be configured to prevent the push pendulum 31 from swinging too much towards the lever 1.

[0114] In some specific embodiments, the limiting boss 11 can be set on the side of the bracket 32 ​​close to the lever 1, and the limiting boss 11 is used to abut against the first side 311 and / or the first contact surface 81 to prevent the push pendulum 31 from swinging too much towards the lever 1 and causing the push pendulum 31 to deviate from the movement trajectory of the lever 1, thereby ensuring the continuity and stability of the action transmission.

[0115] In other specific implementations, such as Figure 9 As shown, the second extension plate 9 includes a side opposite to the second contact surface 91, which is away from the reset rod 2. The limiting boss 11 can be set on the side of the bracket 32 ​​near the reset rod 2 and is used to abut against the side opposite to the second contact surface 91 to prevent the push pendulum 31 from swinging too far toward the lever 1 and causing the push pendulum 31 to deviate from the movement trajectory of the lever 1, thereby ensuring the continuity and stability of the action transmission.

[0116] According to the description of the above embodiments, the limiting structure provided on the bracket 32 ​​is used to limit the swing amplitude of the push-swing 31, so as to avoid the excessive swing amplitude of the push-swing 31 causing the action transmission to be interrupted, thereby ensuring the continuity and stability of the action transmission in the reset device 100 and improving the product performance of the circuit breaker.

[0117] Secondly, this application provides a circuit breaker, including a closing / opening system, an energy storage system, and a reset device as described in any of the above embodiments. The reset device links the closing / opening system and the energy storage system, enabling the energy storage system to perform energy storage operations according to the actions of the closing / opening system.

[0118] 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.

[0119] 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 reset device, applied to a circuit breaker, characterized in that, include: Lever, reset lever, and transmission unit; The lever is connected to the circuit breaker's opening and closing system; The reset rod is connected to the energy storage system of the circuit breaker; The transmission unit is located between the reset rod and the lever; The transmission unit includes a pusher and a support; The push-and-switch mechanism is connected to the bracket, and the bracket is fixedly connected to the circuit breaker. The push-and-switch includes a first side and a second side that are arranged opposite to each other; The lever moves toward the transmission unit, and the first side is located on the movement trajectory of the lever; The lever is used to strike the first side and cause the pusher to swing toward the reset rod; The reset rod is located on the movement trajectory of the second side; The second side is used to strike the reset rod and drive the reset rod to perform a reset action in the striking direction.

2. The reset device according to claim 1, characterized in that, It also includes the pivot; The rotating shaft includes a first connecting part, a second connecting part, and a third connecting part connected sequentially along the axial direction; The radial dimension of the first connecting part is smaller than the radial dimension of the second connecting part, so that the second connecting part has a first stepped surface; The radial dimension of the second connecting part is smaller than the radial dimension of the third connecting part, so that the third connecting part has a second stepped surface; Wherein, the axial direction and the radial direction are two mutually perpendicular directions of the rotating shaft; The bracket is provided with a first connection hole, which is adapted to the first connection part; One end of the push-swing is provided with a second connecting hole, which is adapted to the second connecting part; When the rotating shaft passes through the transmission unit, the first connecting part is located in the first connecting hole, and the first stepped surface abuts against the side of the bracket facing the push-swing. When the rotating shaft passes through the transmission unit, the second connecting part is located in the second connecting hole, and the second stepped surface abuts against the side of the pusher that is away from the bracket.

3. The reset device according to claim 2, characterized in that, It also includes torsion springs; The torsion spring is sleeved on the second connecting part and located between the bracket and the push-swing; The torsion spring includes a first lever arm and a second lever arm that extend in different directions; The first lever arm is connected to the side of the bracket near the lever; The second lever arm is connected to the side of the push-pendulum near the reset rod.

4. The reset device according to claim 3, characterized in that, The push-switch is provided with a first locking angle on the side near the reset rod; The first locking angle has a first opening facing the reset rod; The projection of the first opening in the direction of the push-and-switch is the first projection; When the pusher swings toward the reset rod, at least a portion of the reset rod is located in the first projection, causing the at least a portion of the reset rod to enter the first locking angle through the first opening and abut against the inner wall of the first locking angle in at least one direction.

5. The reset device according to claim 3, characterized in that, The push-swing is provided with a second locking angle on the side near the lever; The second locking angle has a second opening facing the lever; The projection of the second opening in the direction of the push-and-switch movement is the second projection; When the lever swings toward the push-pendulum, at least a portion of the lever is located in the second projection, causing the at least a portion of the lever to enter the second corner through the second opening and abut against the inner wall of the second corner in at least one direction.

6. The reset device according to claim 3, characterized in that, A first extension plate is provided on the side of the push-swing closest to the lever; The first extension plate has a first contact surface, which is coplanar with the first side surface; A second extension plate is provided on the side of the push-switch near the reset rod; The second extension plate has a second contact surface, which is coplanar with the second side surface.

7. The reset device according to claim 3, characterized in that, A limiting boss is provided on the side of the bracket facing the pusher; The limiting boss is located on the swing path of the push pendulum and is used to abut against the side of the push pendulum near the reset rod.

8. The reset device according to any one of claims 3-7, characterized in that, The bracket is provided with a first slot on the side near the lever; The first lever arm is provided with a first hook at its end; The first hook engages with the first slot.

9. The reset device according to any one of claims 3-7, characterized in that, A second slot is provided on the side of the push-switch near the reset rod; The end of the second lever arm is provided with a second hook; The second hook engages with the second slot.

10. A circuit breaker, characterized in that, Includes a circuit breaker system, an energy storage system, and a reset device as described in any one of claims 1-9; The reset device links the circuit breaker opening and closing system and the energy storage system, so that the energy storage system can perform energy storage operations according to the operation of the circuit breaker opening and closing system.

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