A circuit breaker and switchboard

Abstract

The application relates to the technical field of circuit breakers, in particular to a circuit breaker and a power distribution cabinet. The circuit breaker comprises a circuit breaker body, a mounting base, a linkage, an extension rod and a deflection structure. The mounting base is connected to the circuit breaker body. The linkage is rotationally connected to the mounting base and is linked with a control system of the circuit breaker body, and the control system is used for controlling the opening and closing of the circuit breaker. The first end of the extension rod is used for being connected with an external handle of the power distribution cabinet. The second end of the extension rod is rotationally connected with the deflection structure. The deflection structure is matched with the linkage. The external handle, the extension rod, the deflection structure, the linkage and the control system in the application rotate synchronously, so that an operator can control the opening and closing of the circuit breaker by operating the external handle. In addition, the first end of the extension rod can be displaced to compensate for the positional deviation between the first end and the external handle, so that the first end and the external handle can be installed on the ends, and the instantaneity and stability of current on-off in the power distribution cabinet are improved.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and more particularly to a circuit breaker and distribution cabinet. Background Technology

[0002] The distribution cabinet may include a circuit breaker located inside the door panel and an external handle located outside the door panel. The external handle is connected to the output terminal of the control system in the circuit breaker. The operator operates the external handle from outside the distribution cabinet. The external handle, through its connection to the output terminal, drives the control system to operate, thereby opening and closing the circuit breaker and controlling the flow of current in the distribution cabinet.

[0003] In related technologies, there is a positional deviation between the external handle and the output end of the control system, which causes rotational friction or even jamming between the output end of the control system and the external handle, thereby reducing the immediacy and stability of current switching in the distribution cabinet. Utility Model Content

[0004] This application provides a circuit breaker and distribution cabinet that allows for smooth rotation between the output terminal and the external handle, thereby improving the immediacy and stability of current switching in the distribution cabinet.

[0005] In one aspect, this application proposes a circuit breaker for use in a distribution cabinet, comprising a circuit breaker body, a mounting base, a linkage, an extension rod, and a deflection structure. The mounting base is connected to the circuit breaker body. The linkage is rotatably connected to the mounting base and is linked to the control system of the circuit breaker body; the control system is used to control the opening and closing of the circuit breaker. A first end of the extension rod is connected to an external handle of the distribution cabinet. A second end of the extension rod is rotatably connected to the deflection structure. The deflection structure cooperates with the linkage.

[0006] According to the description of the first aspect embodiment, the linkage is rotatably connected to the mounting base, allowing the linkage to rotate synchronously with the control system in the circuit breaker body. The deflection structure can also cooperate with the linkage, allowing the deflection structure to rotate synchronously with the linkage and the control system. The second end of the extension rod is connected to the deflection structure, allowing the extension rod to rotate synchronously with the deflection structure, the linkage, and the control system. The external handle is connected to the first end of the extension rod, enabling the external handle, extension rod, deflection structure, linkage, and control system to rotate synchronously, allowing the operator to control the opening and closing of the circuit breaker by operating the external handle. Furthermore, the deflection structure can be rotatably connected to the second end of the extension rod, causing displacement of the first end of the extension rod to compensate for positional deviations between the first end and the external handle, ensuring that the first end and the external handle are installed end-to-end. This avoids rotational friction or even jamming between the output end of the circuit breaker control system and the external handle, improving the immediacy and stability of current switching in the distribution cabinet.

[0007] In one possible design, the deflection structure includes a rotating bracket, which comprises a base and baffles. Two baffles are positioned opposite each other, with the base connecting between them, forming a snap-fit ​​groove for engaging the second end. A first connecting hole is provided on the baffles, and a second connecting hole is provided on the second end. A first connecting member passes through both the first and second connecting holes.

[0008] Based on the description of the above embodiments, the second end is connected to the deflection structure via the first connector, enabling the second end to rotate around the first connector. Furthermore, the second end is positioned in the snap-fit ​​groove of the rotating bracket, preventing the first end from shifting during movement. This further reduces assembly errors between the output end and the external handle, making the connection between the output end and the external handle smoother and further improving the immediacy and stability of current switching in the distribution cabinet.

[0009] In one possible design, a fastener is provided on the first connector. The fastener is used to lock the relative position of the extension rod and the rotating bracket.

[0010] Based on the description of the above embodiments, the fastener is set on the first connector, which can clamp the second end with the two side baffles to prevent the second end from rotating around the first connector, thereby preventing the first end from being displaced. This avoids the output end of the circuit breaker control system from shifting during its assembly with the external handle, reduces the assembly error between the output end and the external handle, makes the cooperation between the output end and the external handle smoother, and further improves the immediacy and stability of current switching in the distribution cabinet.

[0011] In one possible design, the deflection structure also includes a limiting rod. The limiting rod is connected to the base. A third connecting hole is provided on the linkage. The limiting rod is fitted into the third connecting hole. The third connecting hole is oriented in the second direction. The first and second connecting holes are both oriented in the first direction. The first direction is perpendicular to the second direction.

[0012] Based on the description of the above embodiments, the limiting rod is sleeved in the third connecting hole. The inner wall of the third connecting hole is used to prevent the limiting rod from rotating within the third connecting hole, thereby locking the relative position of the deflection structure and the linkage, and enabling the deflection structure to rotate together with the linkage. Furthermore, since the opening direction of the third connecting hole is perpendicular to the opening directions of the first and second connecting holes, it can be concluded that the direction of rotation around the limiting rod is perpendicular to the direction of rotation around the first connecting member. Based on the rotation around the first connecting member, the extension rod can rotate together with the deflection structure around the limiting rod, causing the displacement trajectory of the first end of the extension rod to deviate along the direction of rotation around the limiting rod. This results in multiple displacement trajectories at the first end, allowing the output end to be installed end-to-end with the external handle on these multiple displacement trajectories. This expands the compensation range for positional deviations at the output end, thereby avoiding rotational friction or even jamming between the output end of the circuit breaker control system and the external handle within a larger compensation range, further improving the immediacy and stability of current switching in the distribution cabinet.

[0013] In one possible design, the limiting rod is a multifaceted prism. The third connecting hole is a polygonal hole so that the inner wall of the third connecting hole matches the outer surface of the limiting rod.

[0014] Based on the description of the above embodiments, the limiting rod is a multifaceted cylinder, and the third connecting hole is a polygonal hole. The multifaceted cylinder is fitted into the polygonal hole, and the rotation of the limiting rod is restricted by the inner wall of the polygonal hole, so that the deflection structure drives the extension rod and the linkage to rotate synchronously. On this basis, combined with the displacement of the first end of the extension rod, the positional deviation between the output end and the external handle is eliminated, so that the external handle and the output end can be smoothly connected. This allows the action of the external handle to be highly synchronized with the opening and closing action of the circuit breaker, thereby ensuring the immediacy and stability of current switching in the distribution cabinet.

[0015] In one possible design, the polyhedron comprises multiple facets. A first angle exists between two adjacent facets. The third connecting hole comprises multiple inner walls. A second angle exists between two adjacent inner walls. The magnitude of the first angle is the same as the magnitude of the second angle.

[0016] Based on the description of the above embodiments, a first angle exists between two adjacent facets, which allows for regular adjustment of the displacement of the first end. A second angle exists between two adjacent inner walls, and the second angle is equal to the first angle, so that any included angle in the limiting rod and any included angle in the third connecting hole can be engaged. This ensures that when any facet of the limiting rod contacts any inner wall in the third connecting hole, the rotation of the limiting rod in the third connecting hole can be restricted, and the deflection structure drives the extension rod and the linkage to rotate synchronously.

[0017] In one possible design, the linkage includes a first linkage end, a second linkage end, and a mounting portion. The first linkage end is located on the side of the mounting base facing the external handle and is used to connect to the deflection structure. The second linkage end is located on the side of the mounting base facing the circuit breaker body and is used to connect to the control system. The mounting portion is disposed between the first and second linkage ends and is used for rotatable connection with the mounting base. The first linkage end is a boss structure extending along a second direction. The third connecting hole is a channel opened on the boss structure along the second direction.

[0018] Based on the description of the above embodiments, the mounting part is rotatably connected to the mounting base, enabling the linkage to be simultaneously connected to the deflection structure and the control system located on both sides of the mounting base. The first linkage end is used to connect to the deflection structure, and the second linkage end is used to connect to the control system. The mounting part is connected between the first linkage end and the second linkage end, allowing the deflection structure to rotate together with the linkage as the circuit breaker opens and closes. In addition, the first linkage end is a boss structure extending along the second direction. The third connecting hole is provided on the boss structure, which can increase the surface area of ​​the inner wall and increase the contact area between the inner wall and the limit rod, thereby further restricting the rotation of the limit rod in the third connecting hole, improving the stability of the deflection structure and the linkage rotating together, and thus improving the stability of the deflection structure, the extension rod, and the external handle rotating together with the linkage, ensuring the immediacy and stability of current switching in the distribution cabinet.

[0019] In one possible design, the limit rod and the rotating bracket are an integrated structure.

[0020] Based on the description of the above embodiments, the linkage is connected to the limiting rod, and the extension rod is connected to the rotating bracket. The limiting rod and the rotating bracket are manufactured as a single unit, avoiding the accumulation of assembly errors. This improves the positional and transmission accuracy between the linkage, the deflection structure, and the extension rod, further enhancing the accuracy of output end position compensation.

[0021] In one possible design, a first mounting hole is provided on the mounting base. A second mounting hole is provided on the circuit breaker body. The first mounting hole and the second mounting hole are positioned correspondingly. A second connector passes through the first mounting hole and the second mounting hole.

[0022] Based on the description of the above embodiments, the second connector fixes the mounting base to the circuit breaker body to ensure the assembly stability of the linkage, deflection structure and extension rod, thereby improving the positional accuracy and transmission accuracy between the linkage, deflection structure and extension rod, and further improving the accuracy of output end position compensation.

[0023] Secondly, this application provides a distribution cabinet, including a door panel, an external handle, and a circuit breaker as described in any of the above embodiments. The door panel includes a first side and a second side facing each other. The external handle is disposed on the first side. The circuit breaker is disposed on the second side. A fourth connection hole is provided on the door panel. An extension rod in the circuit breaker passes through the fourth connection hole and is connected to the external handle.

[0024] The beneficial effects of the power distribution cabinet provided in the second aspect above can be found in the first aspect and the beneficial effects of 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 power distribution cabinet in one embodiment of this application.

[0027] Figure 2 This is an assembly diagram of the linkage, deflection structure, and extension rod in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of one type of deflection structure in an embodiment of this application.

[0029] Figure 4 for Figure 1 Exploded view.

[0030] Explanation of reference numerals in the attached figures: 100-Distribution cabinet; 200 - Circuit breaker body; 1-Mounting base; 11-First mounting hole; 2-Linking component; 21-Third connecting hole; 211-Inner wall; 3-Extension rod; 3a-First end; 3b-Second end; 31-Second connecting hole; 4-Deflection structure; 41-Rotating bracket; 411-Base; 412-Baffle; 4121-First connecting hole; 43-Limiting rod; 431-Rhombus; 5-Door panel; 6-External handle; 7-First connecting component; 8-Second connecting component; X - First direction; Y - Second direction. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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).

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The main purpose of installing circuit breakers in distribution cabinets is to control the flow of current within the cabinet. Specifically, circuit breakers can manually or automatically connect or disconnect the circuit as needed during normal operation, ensuring the stable operation of the power system.

[0042] The circuit breaker may include a matching contact assembly and a control system. When the control system operates, it can control the contact assembly to perform opening or closing actions, thereby cutting off or allowing current to flow in the circuit breaker and controlling the on / off state of the current in the distribution cabinet.

[0043] Among them, such as Figure 1 As shown, an external handle 6 is provided on the outside of the door panel 5 of the distribution cabinet 100. The external handle 6 is connected to the output terminal of the control system, so that the external handle 6 can control the rotation of the control system, thereby enabling the operator to control the current on and off in the distribution cabinet 100 in a timely manner from outside the distribution cabinet 100.

[0044] In related technologies, a positional misalignment exists between the external handle and the output terminal of the control system, preventing the circuit breaker control system's output terminal from being properly aligned with the external handle. Consequently, when the external handle rotates the output terminal to activate the control system, rotational friction or even jamming occurs between the output terminal and the external handle, affecting the normal rotation of the output terminal and consequently impacting the immediacy and stability of current switching in the distribution cabinet.

[0045] Based on this, this application provides a circuit breaker and distribution cabinet 100. By setting a rotatable deflection structure 4 and an extension rod 3 between the output terminal of the control system and the external handle 6, and using one end of the extension rod 3 as the output terminal of the control system, the output terminal can be connected to the external handle 6 at different positions, compensating for the positional deviation between the output terminal and the external handle 6, making the rotation between the output terminal and the external handle 6 smooth, thereby improving the immediacy and stability of current switching in the distribution cabinet 100. The following is in conjunction with... Figure 1-4 Provide a detailed description.

[0046] Firstly, such as Figure 1 As shown, this application proposes a circuit breaker used in a distribution cabinet 100, including a circuit breaker body 200, a mounting base 1, a linkage 2, an extension rod 3, and a deflection structure 4. The mounting base 1 is connected to the circuit breaker body 200. The linkage 2 is rotatably connected to the mounting base 1 and is linked with the control system of the circuit breaker body 200. The control system is used to control the opening and closing of the circuit breaker. Figure 1 and Figure 2 The first end 3a of the extension rod 3 is used to connect to the external handle 6 of the distribution cabinet 100. The second end 3b of the extension rod 3 is rotatably connected to the deflection structure 4. The deflection structure 4 cooperates with the linkage 2.

[0047] The mounting base 1 refers to the basic component supporting the linkage 2, which can be made of metal stamping or injection molding. The mounting base 1 can be fixed to the outer shell of the circuit breaker body 200 by means of bolt connection or snap-fit ​​connection, thereby forming a support platform for the linkage 2.

[0048] The extension rod 3 refers to the rod-shaped component used to connect the external handle 6. The extension rod 3 can be connected to the external handle 6 via a threaded connection or a pin fixing method, allowing the external handle 6 and the extension rod 3 to rotate synchronously. Furthermore, based on the purpose of the extension rod 3, the output terminal of the circuit breaker control system mentioned above can be configured as the first end 3a of the extension rod 3.

[0049] The deflection structure 4 refers to the intermediate transmission unit that realizes multi-directional position compensation at the output end. The deflection structure 4 can be rotatably connected to the second end 3b of the extension rod 3, allowing the second end 3b to rotate relative to the deflection structure 4. Specifically, the first end 3a and the second end 3b are the two opposite ends of the extension rod 3. When the second end 3b rotates, the extension rod 3 draws an arc with the second end 3b as the center and the length of the extension rod 3 as the radius, causing the first end 3a to displace along the aforementioned arc. This displacement can be used to compensate for the positional deviation between the output end and the external handle 6, thereby achieving the matching installation of the first end 3a and the external handle 6. Specifically, matching installation refers to the installation of the two connected ends in a matching manner. In this application, the matching installation of the first end 3a and the external handle 6 refers to the installation of the first end 3a matching one end of the external handle 6.

[0050] Furthermore, the deflection structure 4 can also cooperate with the linkage 2 so that the deflection structure 4 can rotate synchronously with the linkage 2.

[0051] The linkage 2 refers to the transmission component that transmits operating torque. The linkage 2 can form a rotating pair with the mounting base 1 through a bearing or shaft hole fit, allowing the rotation of the external handle 6 to be transmitted through the mounting base 1. Specifically, the linkage 2 is linked with the control system, enabling the rotation of the external handle 6 to be sequentially transmitted to the extension rod 3, the deflection structure 4, the linkage 2, and the control system, thereby controlling the contact assembly in the circuit breaker to perform opening and closing actions.

[0052] According to the description of the first aspect embodiment, the linkage 2 is rotatably connected to the mounting base 1, allowing the linkage 2 to rotate synchronously with the control system in the circuit breaker body. The deflection structure 4 can also cooperate with the linkage 2, allowing the deflection structure 4 to rotate synchronously with the linkage 2 and the control system. The second end 3b of the extension rod 3 is connected to the deflection structure 4, allowing the extension rod 3 to rotate synchronously with the deflection structure 4, the linkage 2, and the control system. The external handle 6 is connected to the first end 3a of the extension rod 3, enabling the external handle 6, the extension rod 3, the deflection structure 4, the linkage 2, and the control system to rotate synchronously, thereby allowing the operator to control the opening and closing of the circuit breaker by operating the external handle 6. In addition, the deflection structure 4 can be rotatably connected to the second end 3b of the extension rod 3, causing the first end 3a of the extension rod 3 to be displaced. This is used to compensate for the positional deviation between the first end 3a and the external handle 6, so that the first end 3a and the external handle 6 can be installed end-to-end. This avoids rotational friction or even jamming between the output end of the circuit breaker control system and the external handle 6, and improves the immediacy and stability of current switching in the distribution cabinet 100.

[0053] Furthermore, in some embodiments, such as Figure 3As shown, the deflection structure 4 includes a rotating bracket 41. The rotating bracket 41 includes a base 411 and baffles 412. The two baffles 412 are arranged opposite to each other. The base 411 is connected between the two baffles 412, so that the base 411 and the two baffles 412 form a snap-fit ​​groove. The snap-fit ​​groove is used to snap the second end 3b of the extension rod 3. A first connecting hole 4121 is provided on the baffle 412. A second connecting hole 31 is provided on the second end 3b of the extension rod 3. A first connecting member 7 passes through the first connecting hole 4121 and the second connecting hole 31.

[0054] The snap-fit ​​groove refers to the U-shaped space formed by the base 411 and the two baffles 412, which can be formed by stamping and bending metal sheets. Figure 2 As shown, the second end 3b of the extension rod 3 is located in the aforementioned U-shaped space.

[0055] Among them, such as Figure 3 As shown, the first connecting hole 4121 refers to a circular through hole provided on the baffle 412. For example... Figure 4 As shown, the second connecting hole 31 is a circular through hole coaxially disposed at the second end 3b with the first connecting hole 4121. The first connecting hole 4121 and the second connecting hole 31 are used to accommodate the first connecting member 7, so that the first connecting member 7 can pass through the baffle 412 and the extension rod 3 at the same time, thus connecting the baffle 412 and the extension rod 3.

[0056] The first connector 7 can be a rotating shaft adapted to the first connecting hole 4121 and the second connecting hole 31, so that the second end 3b can rotate around the first connector 7, thereby realizing the rotational connection between the second end 3b and the deflection structure 4.

[0057] Furthermore, such as Figure 2 As shown, two opposing baffles 412 abut against the two sides of the extension rod 3, constraining the displacement of the second end 3b in the direction of the baffles 412, preventing the second end 3b from shifting when rotating, and at the same time preventing the first end 3a from shifting when displacing, ensuring the accuracy of the displacement of the first end 3a, thereby improving the accuracy of the output position compensation of the circuit breaker control system.

[0058] As described in the above embodiment, the second end 3b is connected to the deflection structure 4 via the first connector 7, allowing the second end 3b to rotate around the first connector 7. Furthermore, the second end 3b is positioned in the snap-fit ​​groove of the rotating bracket 41, preventing the first end 3a from shifting during movement. This further reduces assembly errors between the output end and the external handle 6, making the connection between the output end and the external handle 6 smoother and further improving the immediacy and stability of current switching in the distribution cabinet 100.

[0059] Furthermore, when the first end 3a is successfully aligned with the external handle 6, the operator can restrict the rotation of the second end 3b by locking the relative position of the second end 3b and the rotating bracket 41, thereby fixing the position of the first end 3a and connecting the first end 3a with the external handle 6 to achieve linkage between the external handle 6 and the extension rod 3.

[0060] Based on this, in some embodiments, the first connector 7 is interference-fitted with the first connecting hole 4121 / second connecting hole 31, so that friction is generated between the first connector 7 and the first connecting hole 4121 / second connecting hole 31, which restricts the rotation of the second end 3b, thereby locking the relative position of the extension rod 3 and the rotating bracket 41.

[0061] In other embodiments, the first connector 7 is provided with fasteners. The fasteners are used to lock the relative position of the extension rod 3 and the rotating bracket 41.

[0062] The first connecting member 7 can be a bolt, and the fastener can be a nut. The nut is tightened on the bolt, so that the baffle 412 has pressure pressing against the second end 3b, thereby clamping the second end 3b between the baffles 412 on both sides, restricting the rotation of the second end 3b, and thus locking the relative position of the extension rod 3 and the rotating bracket 41.

[0063] Specifically, when the first end 3a is successfully aligned with the external handle 6, the nut is tightened on the bolt, the second end 3b cannot rotate, and the first end 3a cannot be displaced. This prevents the output end from shifting position during its assembly with the external handle 6, improves the assembly accuracy of the output end, and avoids rotational friction or even jamming between the output end and the external handle 6, thus smoothly realizing the linkage between the external handle 6 and the extension rod 3.

[0064] Furthermore, when the nut is loosened on the bolt, the pressure of the baffle 412 pressing against the second end 3b decreases, allowing the second end 3b to rotate normally. Therefore, the operator can flexibly control the rotation angle of the second end 3b by tightening or loosening the nut, thereby achieving flexible control over the displacement of the first end 3a. Specifically, depending on the different positional deviations between the output end and the external handle 6 of different specifications, the first end 3a can be repeatedly fixed at any position on the aforementioned arc, thus making the circuit breaker in this application universally applicable to external handles 6 of different specifications.

[0065] According to the description of the above embodiment, the fastener is set on the first connector 7, which can make the two side baffles 412 clamp the second end 3b, prevent the second end 3b from rotating around the first connector 7, and thus prevent the first end 3a from being displaced. This avoids the output end of the circuit breaker control system from being offset during its assembly with the external handle 6, reduces the assembly error between the output end and the external handle 6, makes the cooperation between the output end and the external handle 6 smoother, and further improves the immediacy and stability of current switching in the distribution cabinet 100.

[0066] Furthermore, in some embodiments, such as Figure 3 and Figure 4 As shown, the deflection structure 4 also includes a limiting rod 43. The limiting rod 43 is connected to the base 411. A third connecting hole 21 is provided on the linkage 2. The limiting rod 43 is fitted into the third connecting hole 21. The opening direction of the third connecting hole 21 is the second direction Y. The opening direction of the first connecting hole 4121 and the second connecting hole 31 is both the first direction X. The first direction X is perpendicular to the second direction Y.

[0067] Among them, the limiting rod 43 refers to the shaft structure fixed on the base 411, which can be a cylindrical or multi-faceted cylinder structure.

[0068] The third connecting hole 21 refers to the hole structure opened on the linkage 2, which can be in the form of a through hole, and the shape of its inner wall 211 matches the outer surface of the limiting rod 43. Specifically, the limiting rod 43 is sleeved in the third connecting hole 21, and the inner wall 211 is used to restrict the rotation of the limiting rod 43 in the third connecting hole 21, so as to lock the relative position of the deflection structure 4 and the linkage 2, so that the deflection structure 4 can rotate together with the linkage 2.

[0069] Specifically, in some examples, the limiting rod 432 and the third connecting hole 21 can be an interference fit, and the rotation of the limiting rod 43 is restricted by the friction between the limiting rod 43 and the third connecting hole 21. In this case, the third connecting hole can be any shape, such as a round hole or a square hole, and correspondingly, the shape of the limiting rod 432 can be adaptively designed as a round rod, a square rod, etc.

[0070] In other examples, a second fastener may be provided between the limiting rod 43 and the third connecting hole 21. The second fastener can press the limiting rod 43 against the inner wall 211 of the third connecting hole 21, thereby restricting the rotation of the limiting rod 43.

[0071] In other examples, the limiting rod 43 can be a multifaceted cylinder, and the third connecting hole 21 can be a polygonal hole adapted to the limiting rod 43. The multifaceted cylinder is fitted into the polygonal hole, thereby restricting the rotation of the limiting rod 43.

[0072] Furthermore, before the limiting rod 43 is fitted into the third connecting hole 21, the rotating bracket 41 can rotate about the limiting rod 43 as the rotation axis. Since the opening direction of the third connecting hole 21 is... Figure 4 The second direction Y is shown, therefore the limiting rod 43 is a shaft structure extending along the second direction Y. Correspondingly, refer to... Figure 4 It can be seen that the opening direction of the first connecting hole 4121 and the second connecting hole 31 is the first direction X. Therefore, the first connecting member 7 is a shaft structure extending along the first direction X. The first direction X and the second direction Y are perpendicular to each other, so that the rotation of the rotating bracket 41 around the limiting rod 43 and the rotation of the second end 3b around the first connecting member 7 do not interfere with each other. Furthermore, the rotation of the second end 3b, in conjunction with the rotation of the rotating bracket 41, can cause the first end 3a of the extension rod 3 to generate multiple displacement trajectories.

[0073] Specifically, when the rotating bracket 41 rotates around the limiting rod 43 as the rotating axis, the first connecting piece 7 connected to the rotating bracket 41 and the second end 3b of the extension rod 3 rotate together. At this time, the second end 3b rotates around the first connecting piece 7, which can cause the movement of the first end 3a to generate multiple arcs, thereby enabling the first end 3a of the extension rod 3 to be displaced along the aforementioned multiple arcs, expanding the displacement range of the first end 3a. This allows the output end to be installed end-to-end with the external handle with a larger positional deviation, expanding the compensation range of the output end for positional deviation. This avoids rotational friction or even jamming between the output end of the circuit breaker control system and the external handle 6 within a larger compensation range, further improving the immediacy and stability of current switching in the distribution cabinet 100.

[0074] According to the description of the above embodiment, the limiting rod 43 is sleeved in the third connecting hole 21. The inner wall 211 of the third connecting hole 21 is used to prevent the limiting rod 43 from rotating within the third connecting hole 21, thereby locking the relative position of the deflection structure 4 and the linkage member 2, and enabling the deflection structure 4 to rotate together with the linkage member 2. In addition, since the opening direction of the third connecting hole 21 is perpendicular to the opening direction of the first connecting hole 4121 and the second connecting hole 31, it can be concluded that the direction of rotation around the limiting rod 43 is perpendicular to the direction of rotation around the first connecting member 7. Based on the rotation around the first connecting member 7, the extension rod 3 can rotate together with the deflection structure 4 around the limiting rod 43, so that the displacement trajectory of the first end 3a of the extension rod 3 is offset in the direction of rotation around the limiting rod 43, thereby giving the first end 3a multiple displacement trajectories. This allows the output end to be installed end-to-end with the external handle on the multiple displacement trajectories, expanding the compensation range of the output end for position deviation. This avoids rotational friction or even jamming between the output end of the circuit breaker control system and the external handle 6 in a larger compensation range, further improving the immediacy and stability of current switching in the distribution cabinet 100.

[0075] Preferably, in some embodiments, such as Figure 3 As shown, the limiting rod 43 is a multifaceted prism. The third connecting hole 21 is a polygonal hole so that the inner wall 211 of the third connecting hole 21 matches the outer surface of the limiting rod 43.

[0076] Among them, the multifaceted column refers to a columnar structure with a polygonal outline in cross-section, so that its facet 431 forms a rigid contact surface with the inner wall 211 of the third connecting hole 21 to restrict the rotational freedom of the limiting rod 43.

[0077] For example, the limiting rod 43 can be a hexagonal prism, a quadrilateral prism, or other structures.

[0078] Correspondingly, a polygonal hole refers to a hole-like structure with a polygonal cross-section. A polygonal hole can be used to contact and fit with a matching multifaceted cylinder. Specifically, the inner wall 211 of the third connecting hole 21 contacts and fits with the outer surface of the limiting rod 43 to lock the relative position of the limiting rod 43 and the linkage 2.

[0079] Specifically, when the extension rod 3 is displaced to the position where it is installed opposite to the external handle 6, the limiting rod 43 is inserted into the third connecting hole 21. At this time, the edge 431 of the limiting rod 43 contacts the inner wall 211 of the third connecting hole 21, forming a geometric constraint. The limiting rod 43 cannot rotate within the third connecting hole 21, thereby locking the relative position of the deflection structure 4 and the linkage 2, allowing the deflection structure 4 to rotate together with the linkage 2. As can be seen from the foregoing, the fastener can make the extension rod 3 and the deflection structure 4 rotate together. Therefore, the extension rod 3, the deflection structure 4, and the linkage 2 can rotate together, so that the opening and closing action of the contact assembly in the circuit breaker can be accurately transmitted to the external handle 6 through the linkage 2, the deflection structure 4, and the extension rod 3. The action of the external handle 6 can also be accurately transmitted to the contact assembly of the circuit breaker through the extension rod 3, the deflection structure 4, and the linkage 2. This ensures that the action of the external handle 6 is highly synchronized with the opening and closing action of the circuit breaker, guaranteeing the immediacy and stability of current switching in the distribution cabinet 100.

[0080] It should be noted that the limiting rod 43 needs to be rotated outside the third connecting hole 21 until the output end is displaced to a position that matches the external handle 6, and then the limiting rod 43 is fitted into the third connecting hole 21 to limit the deflection structure 4.

[0081] As described in the above embodiment, the limiting rod 43 is a multifaceted cylinder, and the third connecting hole 21 is a polygonal hole. The multifaceted cylinder is fitted into the polygonal hole, and the inner wall 211 of the polygonal hole restricts the rotation of the limiting rod 43, so that the deflection structure 4 drives the extension rod 3 and the linkage 2 to rotate synchronously. Based on this, combined with the displacement of the first end 3a of the extension rod 3, the positional deviation between the output end and the external handle 6 is eliminated, so that the external handle 6 and the output end can be smoothly connected. This allows the action of the external handle 6 to be highly synchronized with the opening and closing action of the circuit breaker, thereby ensuring the immediacy and stability of the current switching in the distribution cabinet 100.

[0082] Furthermore, in some embodiments, such as Figure 3 As shown, the polyhedron includes multiple facets 431. A first angle exists between two adjacent facets 431. The third connecting hole 21 includes multiple inner walls 211. A second angle exists between two adjacent inner walls 211. The magnitude of the first angle is the same as the magnitude of the second angle.

[0083] The included angle between two adjacent facets 431 forms a first angle, such as 30° or 45°.

[0084] The included angle between two adjacent inner walls 211 forms a second angle, such as 30° or 45°.

[0085] Specifically, one of the inner walls 211 of the third connecting hole 21 is used as a reference surface. Before the deflection structure 4 rotates around the limiting rod 43 by an angle, one of its facets 431 contacts the reference surface. After the deflection structure 4 rotates around the limiting rod 43 by an angle, the other facet 431 contacts the reference surface. When different facets 431 are in contact with the reference surface, any included angle of the limiting rod 43 may engage with the included angles on both sides of the contact surface.

[0086] Based on this, by keeping the first angle and the second angle consistent, it is possible to engage any angle of the limiting rod 43 with any angle of the third connecting hole 21.

[0087] Furthermore, the included angle between any two adjacent facets 431 is the first angle, making the limiting rod 43 a regular polyhedron, such as a regular square prism or a regular hexagonal prism. Based on the characteristics of a regular polyhedron, when the limiting rod 43 rotates by a certain angle, two adjacent facets 431 will successively coincide with the aforementioned reference plane. Correspondingly, when the limiting rod 43 rotates by a multiple of a certain angle, all facets 431 of the limiting rod 43 will successively coincide with the aforementioned reference plane.

[0088] Therefore, by adjusting the multiple of the rotation of the limiting rod 43 by a certain angle, the angle of rotation of the deflection structure 4 around the limiting rod 43 can be regularly adjusted so that the multiple arcs that exist due to the rotation around the limiting rod 43 mentioned above are regularly arranged, thereby realizing the regular adjustment of the displacement of the first end 3a.

[0089] According to the description of the above embodiment, there is a first angle between two adjacent facets 431, which can realize the regular adjustment of the displacement of the first end 3a. There is a second angle between two adjacent inner walls 211, and the second angle is equal to the first angle, so that any included angle of the limiting rod 43 and any included angle of the third connecting hole 21 can be engaged, so as to ensure that when any facet 431 of the limiting rod 43 contacts any inner wall 211 of the third connecting hole 21, the rotation of the limiting rod 43 in the third connecting hole 21 can be restricted, and the deflection structure 4 drives the extension rod 3 and the linkage 2 to rotate synchronously.

[0090] Furthermore, in some embodiments, the linkage 2 includes a first linkage end, a second linkage end, and a mounting portion. The first linkage end is located on the side of the mounting base 1 facing the external handle 6 and is used to connect the deflection structure 4. The second linkage end is located on the side of the mounting base 1 facing the circuit breaker body and is used to connect the control system. The mounting portion is disposed between the first linkage end and the second linkage end and is used for rotatable connection with the mounting base 1. The first linkage end is a boss structure extending along the second direction Y. The third connecting hole 21 is a channel opened on the boss structure along the second direction Y.

[0091] The mounting base 1 may have through holes adapted to the mounting part, and the mounting part is inserted through the through holes so that the mounting part is rotatably connected to the mounting base 1, and the first linkage end and the second linkage end connected to both ends of the mounting part are respectively located on both sides of the mounting base 1.

[0092] The first linkage end is located on the side of the mounting base 1 facing the external handle 6, and the deflection structure 4 is connected to the first linkage end, so that the deflection structure 4 and the linkage 2 rotate together.

[0093] The second linkage terminal is located on the side of the mounting base 1 facing the circuit breaker body. The control system in the circuit breaker body is connected to the second linkage terminal, so that the linkage 2 can rotate with the opening and closing action of the circuit breaker.

[0094] The boss structure is a solid block component extending along the second direction Y, which can be formed by metal casting or machining.

[0095] The third connecting hole 21 is a cylindrical or polygonal channel set on the boss structure. Specifically, it can be formed by drilling or milling, so that the limiting rod 43 and the inner wall 211 of the third connecting hole 21 can form a uniform contact.

[0096] Specifically, the presence of the boss structure can increase the surface area of ​​the inner wall 211 of the third connecting hole 21, thereby increasing the contact area between the inner wall 211 of the third connecting hole 21 and the limiting rod 43, so that the geometric constraint between the limiting rod 43 and the third connecting hole 21 is more stable, further restricting the rotation of the limiting rod 43 within the third connecting hole 21.

[0097] According to the description of the above embodiment, the mounting part is rotatably connected to the mounting base 1, so that the linkage 2 can be simultaneously connected to the deflection structure 4 and the control system located on both sides of the mounting base 1. The first linkage end is used to connect to the deflection structure 4, and the second linkage end is used to connect to the control system. The mounting part is connected between the first linkage end and the second linkage end, so that the deflection structure 4 can rotate together with the linkage 2 as the circuit breaker opens and closes. In addition, the first linkage end 2 is a boss structure extending along the second direction Y. The third connecting hole 21 is provided on the boss structure, which can increase the surface area of ​​the inner wall 211 and increase the contact area between the inner wall 211 and the limit rod 43, thereby further restricting the rotation of the limit rod 43 in the third connecting hole 21, improving the stability of the deflection structure 4 and the linkage 2 rotating together, and thus improving the stability of the deflection structure 4, the extension rod 3, and the external handle 6 rotating together with the linkage 2, ensuring the immediacy and stability of the current switching in the distribution cabinet 100.

[0098] Furthermore, in some embodiments, the limiting rod 43 and the rotating bracket 41 are an integral structure.

[0099] The integrated structure eliminates assembly errors caused by structural gaps. For example, the integrated structure can be integrally formed by mold casting or CNC machine tool.

[0100] According to the description of the above embodiment, the linkage 2 is connected to the limiting rod 43, and the extension rod 3 is connected to the rotating bracket 41. The limiting rod 43 and the rotating bracket 41 are processed into an integral structure during the manufacturing process, avoiding the accumulation of assembly errors, thereby improving the positional accuracy and transmission accuracy between the linkage 2, the deflection structure 4 and the extension rod 3, and further improving the accuracy of the output end position compensation.

[0101] Furthermore, in some embodiments, such as Figure 4 As shown, the mounting base 1 has a first mounting hole 11. The circuit breaker body 200 has a second mounting hole. The positions of the first mounting hole 11 and the second mounting hole correspond. A second connector 8 passes through the first mounting hole 11 and the second mounting hole.

[0102] The first mounting hole 11 refers to the positioning reference hole provided on the mounting base 1, which can be implemented by a through hole or a threaded hole, and is used to fix the mounting base 1 to the circuit breaker body 200.

[0103] The second mounting hole refers to the mating hole provided on the circuit breaker body 200, which can be implemented by a through hole or a countersunk hole, and is used to determine the connection position of the mounting base 1 on the circuit breaker body 200.

[0104] The second connecting component 8 refers to the mechanical fastening component used to fix the mounting base 1 and the circuit breaker body 200. Specifically, it can be implemented by a combination of bolts and nuts or a pin structure.

[0105] Specifically, the position of the second mounting hole corresponds to the first mounting hole 11, so that the second connector 8 can pass through the first mounting hole 11 and the second mounting hole at the same time, thereby ensuring a stable connection between the mounting base 1 and the circuit breaker body 200.

[0106] In some specific embodiments, the first mounting hole 11 and the second mounting hole can be set as circular holes of the same diameter, and the tolerance of their axis coincidence is controlled within a preset range. The second connector 8 can be a bolt assembly with anti-loosening washers, forming a vibration-resistant and anti-loosening connection structure after tightening.

[0107] According to the description of the above embodiments, the second connector 8 fixes the mounting base 1 to the circuit breaker body 200 to ensure the assembly stability of the linkage 2, the deflection structure 4 and the extension rod 3, thereby improving the positional accuracy and transmission accuracy between the linkage 2, the deflection structure 4 and the extension rod 3, and further improving the accuracy of the output end position compensation.

[0108] Secondly, this application provides a distribution cabinet, including a door panel, an external handle, and a circuit breaker as described in any of the above embodiments. The door panel includes a first side and a second side facing each other. The external handle is disposed on the first side. The circuit breaker is disposed on the second side. A fourth connection hole is provided on the door panel. An extension rod in the circuit breaker passes through the fourth connection hole and is connected to the external handle.

[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 circuit breaker used in a distribution cabinet, characterized in that, include: Circuit breaker body, mounting base, linkage, extension rod and deflection structure; The mounting base is connected to the circuit breaker body; The linkage is rotatably connected to the mounting base and is linked with the control system of the circuit breaker body. The control system is used to control the opening and closing of the circuit breaker. The first end of the extension rod is connected to the external handle of the power distribution cabinet; The second end of the extension rod is rotatably connected to the deflection structure; The deflection structure cooperates with the linkage component.

2. The circuit breaker according to claim 1, characterized in that, The deflection structure includes a rotating bracket, which includes a base and a baffle. The two baffles are arranged opposite each other along a first direction, and the base is connected between the two baffles, so that the base and the two baffles form a snap-fit ​​groove, which is used to snap the second end. The baffle is provided with a first connecting hole and the second end is provided with a second connecting hole. A first connecting member is inserted through the first connecting hole and the second connecting hole. The first connecting hole and the second connecting hole are both opened in the first direction.

3. The circuit breaker according to claim 2, characterized in that, The deflection structure also includes a limiting rod; The limiting rod is connected to the base; The linkage component is provided with a third connection hole; The limiting rod is sleeved in the third connecting hole; The third connecting hole is opened in the second direction, which is perpendicular to the first direction.

4. The circuit breaker according to claim 3, characterized in that, The limiting rod is a multifaceted cylinder; The third connecting hole is a polygonal hole so that the inner wall of the third connecting hole matches the outer surface of the limiting rod.

5. The circuit breaker according to claim 4, characterized in that, The polyhedron includes multiple facets; A first angle exists between two adjacent facets; The third connecting hole includes multiple inner walls; A second angle exists between two adjacent inner walls; The first angle is the same as the second angle.

6. The circuit breaker according to any one of claims 3-5, characterized in that, The linkage component includes a first linkage end, a second linkage end, and a mounting part; The first linkage end is located on the side of the mounting base facing the external handle, and is used to connect the deflection structure; The second linkage terminal is located on the side of the mounting base facing the circuit breaker body and is used to connect to the control system; The mounting part is disposed between the first linkage end and the second linkage end, and is used to be rotatably connected to the mounting base; The first linkage end is a boss structure extending along the second direction; The third connecting hole is a channel opened on the boss structure along the second direction.

7. The circuit breaker according to any one of claims 2-5, characterized in that, Fasteners are provided on the first connector; The fastener is used to lock the relative position of the extension rod and the rotating bracket.

8. The circuit breaker according to any one of claims 3-5, characterized in that, The limiting rod and the rotating bracket are an integral structure.

9. The circuit breaker according to any one of claims 1-5, characterized in that, The mounting base is provided with a first mounting hole; The circuit breaker body is provided with a second mounting hole; The positions of the first mounting hole and the second mounting hole correspond; A second connector is inserted through the first mounting hole and the second mounting hole.

10. A power distribution cabinet, characterized in that, Includes a door panel, an external handle, and a circuit breaker as described in any one of claims 1-9; The door panel includes a first side and a second side facing each other; The external handle is disposed on the first surface; The circuit breaker is disposed on the second side; A fourth connection hole is provided on the door panel; The extension rod in the circuit breaker passes through the fourth connection hole and is connected to the external handle.

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