Transmission mechanism and circuit breaker

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a transmission mechanism and a circuit breaker. The transmission mechanism is used for the circuit breaker and specifically comprises a driving assembly, a sliding block and a support. The bracket is fixed in a shell of the circuit breaker; the driving assembly is in driving connection with the sliding block, the sliding block is in transmission connection with a handle of the circuit breaker, the two sides of the sliding block in the sliding direction are respectively provided with a plurality of hanging parts, the hanging parts located on the two sides are in sliding fit with the two ends of the support respectively, and the hanging parts and the sliding block are of an integrated structure. According to the reclosing circuit breaker, switching-on and switching-off actions of the circuit breaker can be achieved through sliding fit of the sliding block and the support fixed in the circuit breaker, redundant transmission mechanisms in an existing reclosing circuit breaker are reduced, the number of parts of the transmission mechanisms is reduced, the compactness of the transmission mechanisms is effectively improved, assembly procedures are reduced, and the assembly cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a transmission mechanism and a circuit breaker. Background Art

[0002] A reclosing circuit breaker is an automatic reclosing device. Its main function is to restore power supply by automatically reclosing when a fault occurs in the power system, thereby improving the reliability and stability of power supply.

[0003] The reclosing and opening and closing functions are completed through the action of the transmission mechanism in the reclosing circuit breaker.

[0004] At present, in the reclosing circuit breaker products, the transmission mechanism usually adopts a sliding groove on the bracket to assemble the sliding part with the sliding pin, and a split connection structure is adopted between the sliding pin and the sliding part. The sliding of the sliding part is realized by the sliding matching relationship between the sliding pin and the sliding groove, and then the circuit breaker handle is driven. The existing reclosing circuit breaker has a large number of components of the transmission mechanism, resulting in problems such as too many assembly processes and high processing and assembly costs. Utility Model Content

[0005] The utility model aims to provide a transmission mechanism and a circuit breaker, which are used to reduce the number of parts of the transmission mechanism, improve the compactness of the transmission mechanism, reduce assembly processes and reduce assembly costs.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A transmission mechanism for a circuit breaker, comprising:

[0008] Drive components;

[0009] A slider, the driving assembly is drivingly connected to the slider, the slider is provided with a transmission connection for a handle of the circuit breaker, and the slider is used to drive the handle to move;

[0010] The support, the slider is slidably connected to the support, and the driving assembly is used to drive the slider to slide along the support along a first direction.

[0011] As an optional solution of the transmission mechanism, a plurality of slide platforms are protruding from the slider, and the bracket is pressed against the top of the slide platform near the wall surface of the slider.

[0012] As an optional solution of the transmission mechanism, a plurality of hanging parts are provided on the slider corresponding to two sides of the bracket, and the hanging parts are pressed against the wall surface of the bracket away from the slider.

[0013] As an optional solution of a transmission mechanism, the top surface of the slide is arc-shaped.

[0014] As an optional solution of the transmission mechanism, the surface of the hanging portion that contacts the wall surface of the bracket is arc-shaped.

[0015] As an optional scheme of the transmission mechanism, the slider is provided with an opening, the handle is inserted into the opening, and the opening is provided with flanges extending away from the slider on both sides relative to the handle, and the flanges are used to squeeze the handle.

[0016] As an optional solution of a transmission mechanism, the driving assembly includes:

[0017] a first mounting plate;

[0018] A driving member, disposed on the first mounting plate;

[0019] A cam is drivingly connected to the driving member, and the driving member drives the slider to slide relative to the bracket along a sliding direction through the cam;

[0020] A compound gear set, wherein a plurality of the compound gear sets are meshed and driven in sequence, and the driving member is connected to the cam through the plurality of the compound gear sets.

[0021] As an optional scheme of the transmission mechanism, a control hole is provided on the slider, and a thrust shaft is provided on the cam. The thrust shaft is placed in the control hole, and the thrust shaft can rotate with the cam and squeeze the inner wall of the control hole to make the slider slide.

[0022] As an optional solution of the transmission mechanism, a part of the structure of the first mounting plate is recessed inward to form a positioning groove, and one end of the driving member is placed in the positioning groove.

[0023] The circuit breaker comprises a housing and the transmission mechanism described in any one of the above schemes, wherein the bracket is fixed in the housing.

[0024] Beneficial effects:

[0025] In the first aspect of the utility model, the bracket is fixed in the housing of the circuit breaker, and the slider is integrally formed with a plurality of hanging parts on both sides of the movement direction. The slider is slidably connected to the two ends of the bracket through the hanging parts on both sides, and the slider is limited in the width direction of the bracket. Furthermore, the driving component is used to provide a power source, and the driving component drives the slider to slide relative to the bracket. At the same time, the transmission relationship between the slider and the handle is utilized to drive the circuit breaker handle to realize the movement of the handle and complete the opening and closing of the circuit breaker. The utility model can realize the opening and closing action of the circuit breaker through the sliding cooperation of the slider and the bracket fixed inside the circuit breaker, thereby reducing the redundant transmission mechanism such as the sliding pin used in the existing reclosing circuit breaker, and effectively improving the compactness of the transmission mechanism by reducing the number of parts of the transmission mechanism, reducing the assembly process and reducing the assembly cost.

[0026] In the second aspect of the present invention, a circuit breaker equipped with the transmission mechanism can effectively reduce the assembly links of the circuit breaker and reduce the assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the internal structure of a circuit breaker provided by an embodiment of the utility model;

[0028] Figure 2 It is a structural schematic diagram of a transmission mechanism of a hidden bracket provided in an embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of a transmission mechanism provided by an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the bracket and the slider provided in the embodiment of the utility model;

[0031] Figure 5 is a top view of a bracket provided by an embodiment of the utility model;

[0032] Figure 6 It is an axonometric diagram of a slider provided in an embodiment of the utility model;

[0033] Figure 7 It is a first isometric view of the drive assembly provided by the embodiment of the utility model;

[0034] Figure 8 It is a second isometric view of the drive assembly provided in the embodiment of the utility model;

[0035] Fig. 9 It is a first isometric view of the drive assembly of the embodiment of the utility model that hides the second mounting plate;

[0036] Fig.10 It is a second isometric view of the drive assembly with the second mounting plate hidden provided by the embodiment of the utility model;

[0037] Fig.11 is a cross-sectional view of a first composite gear provided by an embodiment of the utility model;

[0038] Fig.12 is a top view of a first mounting plate provided in an embodiment of the utility model;

[0039] Fig.13 is an axonometric view of a second mounting plate provided in an embodiment of the utility model;

[0040] Fig.14 is a top view of a third mounting plate provided in an embodiment of the utility model;

[0041] Fig.15 It is an axonometric diagram of a driving member provided in an embodiment of the utility model;

[0042] Fig.16 is a top view of a driving gear provided by an embodiment of the utility model;

[0043] Fig.17 It is a first isometric view of the cam provided by the embodiment of the utility model;

[0044] Fig.18 It is a second isometric view of the cam provided by the embodiment of the utility model;

[0045] Fig.19 It is an axonometric view of the hexagonal hand-operated rotating shaft provided in the embodiment of the utility model;

[0046] Fig. 20 It is an axonometric view of the main shaft provided by the embodiment of the utility model.

[0047] In the figure:

[0048] 100. handle; 200. housing;

[0049] 1. Driving assembly; 11. First mounting plate; 111. Positioning groove; 112. Positioning hole; 113. Connecting hole; 12. Driving member; 121. Driving gear; 122. Positioning truncated table; 123. Threaded hole; 124. Driving rod; 13. Cam; 131. Thrust shaft; 132. Spindle; 133. Spindle gear; 134. First waist-shaped hole; 135. Second waist-shaped hole; 136. Hexagonal hand-operated rotating shaft; 14. Compound gear set; 141. First compound gear; 1411. Boss; 142. Second compound gear; 143. Third compound gear; 144. Fourth compound gear; 15. Second mounting plate; 16. Third mounting plate;

[0050] 2. Slider; 21. Slide; 22. Hanging part; 23. Opening; 24. Flanging; 25. Control hole;

[0051] 3. Bracket; 31. First avoidance hole; 32. Second avoidance hole; 33. Fixing hole. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0056] Please refer to the attached Figure 1 -Attached Figure 3 The first aspect of the present embodiment relates to a transmission mechanism used inside a circuit breaker. Specifically, the transmission mechanism includes a driving assembly 1, a slider 2 and a bracket 3; the bracket 3 is fixed in a housing 200 of the circuit breaker; the driving assembly 1 is drivingly connected to the slider 2, and the slider 2 is drivingly connected to a handle 100 of the circuit breaker. The slider 2 is provided with a plurality of hanging parts 22 on both sides along the sliding direction, and the hanging parts 22 on both sides are respectively slidably matched with two ends of the bracket 3, and the hanging parts 22 and the slider 2 are an integrated structure.

[0057] The bracket 3 is fixed in the housing 200 of the circuit breaker, and the slider 2 is integrally formed with a plurality of hanging parts 22 on both sides of the movement direction. The slider 2 is hung on the two ends of the bracket 3 through the hanging parts 22 on both sides, and the slider 2 is limited in the width direction of the bracket 3. Furthermore, the driving component 1 is used to provide a power source, and the driving component 1 drives the slider 2 to slide relative to the bracket 3. At the same time, the transmission relationship between the slider 2 and the handle 100 is utilized to enable the slider 2 to drive the circuit breaker handle 100, so as to realize the movement of the handle 100 and complete the opening and closing of the circuit breaker. It can be understood that the opening and closing states are two opposite directions of the movement of the handle 100, so the driving of the slider 2 by the driving component 1 should enable the slider 2 to reciprocate along the extension direction of the bracket 3.

[0058] In this embodiment, the opening and closing actions of the circuit breaker can be realized by the sliding cooperation of the slider 2 and the bracket 3 fixed inside the circuit breaker, thereby reducing the redundant transmission mechanism of the existing reclosing circuit breaker with sliding pins, etc., and effectively improving the compactness of the transmission mechanism by reducing the number of parts of the transmission mechanism, reducing the assembly process and reducing the assembly cost; at the same time, reducing the automatic closing time.

[0059] Please refer to the attached Figure 1 And attached Figure 4 -Attached Figure 6 Optionally, the bracket 3 is fixed in the housing 200 of the circuit breaker, a plurality of slides 21 are protruding from the slider 2, and the wall surface of the bracket 3 close to the slider 2 is pressed against the top of the slide 21.

[0060] In this embodiment, the bracket 3 is a plate-shaped member, and a plurality of fixing holes 33 are distributed on the bracket 3. Screws pass through the fixing holes 33 and are screwed to the housing 200. A first avoidance hole 31 is also provided on the main plate surface of the bracket 3 for avoidance within the entire movement stroke of the handle 100. The slider 2 is also plate-shaped as a whole, and a plurality of slides 21 extending toward the bracket 3 are provided on the plate surface of the slider 2. The wall surface of the bracket 3 close to the slider 2 is pressed against the top of the slide 21, so that the slider 2 slides on the wall surface of the bracket 3 through the top of the slide 21.

[0061] In other embodiments, the bracket 3 may also be a plate-shaped split structure. For example, the bracket 3 is fixed to the housing 200 by two split frame plates, and the outer ends of the two frame plates, which are far away from each other, respectively slide with the hanging parts 22 of the slider 2.

[0062] Furthermore, the top surface of the slide table 21 is arc-shaped.

[0063] By processing the top surface of the slide table 21 into an upward convex arc shape and adopting arc surface contact, the relative sliding smoothness can be improved.

[0064] Optionally, a plurality of hanging portions 22 are provided on the slider 2 corresponding to two sides of the bracket 3 , and the hanging portions 22 are pressed against a wall surface of the bracket 3 away from the slider 2 .

[0065] A plurality of hanging parts 22 are also provided on the slider 2, and the hanging parts 22 are separated on both sides of the bracket 3. The hanging parts 22 on both sides cooperate with the two side walls of the bracket 3 to realize the upper limit positioning of the slider 2 in the width direction of the bracket 3. The hanging parts 22 are in an inverted L-shape as a whole, and a plurality of hanging parts 22 are hooked on the surface of the bracket 3. At the same time, the slider 2 slides on the surface of the bracket 3 through the hanging parts 22, and the L-shaped hanging parts 22 assist in guiding the slider 2.

[0066] In this embodiment, the slide platform 21 and the hanging portion 22 are both integrally formed on the main body of the slider 2 .

[0067] Furthermore, the surface of the hanging portion 22 that contacts the wall surface of the bracket 3 is arc-shaped.

[0068] The surface where the hanging portion 22 contacts the wall surface of the bracket 3 is a sliding surface. By processing the sliding surface into an arc surface, the sliding smoothness of the slider 2 is improved.

[0069] Optionally, the slider 2 is provided with an opening 23 , the handle 100 is passed through the opening 23 , and the opening 23 is provided with flanges 24 extending away from the slider 2 on both sides relative to the handle 100 , respectively, and the flanges 24 are used to squeeze the handle 100 .

[0070] In this embodiment, the handle 100 is of a movable type, and an opening 23 matching the shape and size of the handle 100 is provided on the slider 2. The handle 100 is squeezed by the inner walls on both sides of the opening 23 to achieve movement of the handle 100 in two directions. Furthermore, arc-shaped flanges 24 extending away from the slider 2 are provided on both sides of the opening 23 relative to the handle 100, and an extrusion force is applied to the handle 100 through the flanges 24, thereby optimizing the force-bearing part of the handle 100 and improving the stability of the driving handle 100.

[0071] Please refer to the attached Figure 7 -Attached Fig.13 Optionally, the driving assembly 1 includes a first mounting plate 11, a driving member 12, a cam 13 and a composite gear set 14. The cam 13 is in transmission connection with the driving member 12, and the driving member 12 drives the slider 2 to slide relative to the bracket 3 along the sliding direction through the cam 13; the multiple composite gear sets 14 are meshed and transmitted in sequence, and the driving member 12 is in transmission connection with the cam 13 through the multiple composite gear sets 14.

[0072] In this embodiment, the driving component 1 adopts an integrated module form to improve the efficiency of assembly. Specifically, the first mounting plate 11 is a plate-shaped member, and the shape of the first mounting plate 11 can be adjusted according to the support strength and spatial layout. The driving member 12 can adopt a DC motor or an AC motor. The cam 13 is driven to move by the driving member 12, and further, the cam 13 drives the slider 2 to slide along the bracket 3.

[0073] Furthermore, a control hole 25 is provided on the slider 2, and a thrust shaft 131 is provided on the cam 13. The thrust shaft 131 is placed in the control hole 25. The thrust shaft 131 can rotate with the cam 13 and squeeze the inner wall of the control hole 25 to make the slider 2 slide.

[0074] In this embodiment, the cam 13 is disc-shaped, and a thrust shaft 131 is provided on the radial plate surface of the cam 13. The thrust shaft 131 rotates in the control hole 25 of the slider 2. By reasonably designing the shape of the control hole 25, the thrust shaft 131 can rotate in the positive and negative directions and press against the inner wall of the control hole 25, thereby pushing the slider 2 to slide back and forth in the first direction, and the first direction is the extension direction of the bracket 3.

[0075] In this embodiment, a compound gear set 14 is further provided in the modular drive assembly 1 , and the compound gear set 14 is used to achieve multi-stage speed reduction of the drive member 12 .

[0076] Optionally, a portion of the structure of the first mounting plate 11 is recessed inward to form a positioning groove 111, and one end of the driving member 12 is placed in the positioning groove 111. Fig.11 And attached Fig.14 -Attached Fig.16 In this embodiment, a positioning groove 111 is provided on the first mounting plate 11. A part of the structure on the first mounting plate 11 is recessed toward one side to form the positioning groove 111. The shape and size of the positioning groove 111 are adapted to the shape and size of the end of the driving member 12, so that the driving member 12 can be accurately limited on the first mounting plate 11 during assembly. In addition, a limiting truncated cone 122 is provided in the circumferential direction of the driving rod 124 of the driving member 12. The limiting truncated cone 122 is plugged and matched with the positioning hole 112 in the positioning groove 111 to achieve the circumferential limitation of the driving member 12. Further, a connecting hole 113 is also provided in the positioning groove 111. The driving member 12 is provided with a threaded hole 123 corresponding to the connecting hole 113. The screw can pass through the connecting hole 113 from the bottom of the first mounting plate 11 and enter the threaded hole 123 and be screwed with the threaded hole 123. In this embodiment, two connecting holes 113 are provided, which are respectively located on both sides of the limiting truncated cone 122. The driving gear 121 is sleeved on the driving rod 124, and the driving gear 121 is driven to rotate circumferentially by the driving rod 124. The inner hole of the driving gear 121 is processed into a D shape, and the end of the driving rod 124 is also adaptively processed into a D shape. The end of the driving rod 124 is interference fit with the driving gear 121.

[0077] Optionally, the compound gear set 14 includes a first compound gear 141 , a second compound gear 142 , a third compound gear 143 and a fourth compound gear 144 which are meshed and driven in sequence.

[0078] Specifically, a second mounting plate 15 is spaced apart below the first mounting plate 11, and the first mounting plate 11 and the second mounting plate 15 are connected by rivets. Specifically, rivet holes are processed at corresponding positions of the first mounting plate 11 and the second mounting plate 15, respectively, and the first mounting plate 11 and the second mounting plate 15 are riveted together by using a plurality of rivets.

[0079] In this embodiment, the transmission mechanism includes four stages of reduction gears. Specifically, the driving gear 121 is meshed with the large gear of the first composite gear 141 for transmission, the small gear of the first composite gear 141 is meshed with the large gear of the second composite gear 142 for transmission, the small gear of the second composite gear 142 is meshed with the large gear of the third composite gear 143 for transmission, the small gear of the third composite gear 143 is meshed with the large gear of the fourth composite gear 144 for transmission, and the fourth composite gear 144 is coaxial with the second composite gear 142. The first composite gear 141, the second composite gear 142 and the third composite gear 143 are integrally located between the first mounting plate 11 and the second mounting plate 15. The first composite gear 141 is meshed with the large gear of the second composite gear 142. The second composite gear 142 and the third composite gear 143 are all sleeved on the mounting shaft fixed between the first mounting plate 11 and the second mounting plate 15. The mounting shaft is a stepped shaft structure. The first composite gear 141, the second composite gear 142 and the third composite gear 143 are limited on the axis by the end faces of the first composite gear 141, the second composite gear 142 and the third composite gear 143 cooperating with the stepped surfaces of the mounting shaft. In addition, the end faces of the first composite gear 141, the second composite gear 142 and the third composite gear 143 cooperating with the stepped surfaces are protruding outwardly with an annular boss 1411. The surface of the boss 1411 is polished to improve the friction performance between the end face and the stepped surface and reduce wear.

[0080] Please attach Fig.17 -Attached Fig. 20In this embodiment, the fourth composite gear 144 is coaxial with the second composite gear 142, and the pinion end of the fourth composite gear 144 passes through the first mounting plate 11, and is meshed with the main shaft gear 133 of the main shaft 132 between the first mounting plate 11 and the third mounting plate 16. One end of the main shaft 132 is rotatably connected to the side of the first mounting plate 11 close to the third mounting plate 16, and the other end is connected to the cam 13. The main shaft gear 133 is sleeved on the end of the main shaft 132 away from the third mounting plate 16. The rotation of the fourth composite gear 144 drives the main shaft gear 133 to move. One end of the main shaft 132 is D-shaped, and the main shaft gear 133 is provided with a D-shaped hole that matches the end of the main shaft 132. The main shaft gear 133 is sleeved on the main shaft 132, and is tightly connected to the main shaft 132 through interference fit, so that the main shaft gear 133 drives the main shaft 132 to rotate, and then drives the cam 13 to rotate. The main shaft 132 is also a stepped shaft structure. The stepped surface of the main shaft 132 cooperates with the third mounting plate 16 to achieve the height positioning of the third mounting plate 16. The center position of the cam 13 is provided with a first waist-shaped hole 134 and a second waist-shaped hole 135 from bottom to top. The first waist-shaped hole 134 and the second waist-shaped hole 135 are arranged alternately. The other end of the main shaft 132 is processed into a waist-shaped structure that cooperates with the first waist-shaped hole 134. The waist-shaped structure at the other end of the main shaft 132 cooperates with the first waist-shaped hole 134 to achieve the rotation of the main shaft 132. The movable cam 13 rotates; an inner hexagonal manual operating shaft 136 is inserted into the second waist-shaped hole 135 at the top, and one end of the inner hexagonal manual operating shaft 136 is provided with a waist-shaped structure matching the second waist-shaped hole 135, and the other end can cooperate with a hexagonal wrench. When the circuit breaker needs to be manually opened and closed, the inner hexagonal manual operating shaft 136 can be driven by rotating the hexagonal wrench to realize the rotation of the cam 13. A second avoidance hole 32 is provided at the top of the bracket 3 corresponding to the inner hexagonal manual operating shaft 136, which can facilitate the insertion of the hexagonal wrench in the vertical direction.

[0081] The second aspect of this embodiment also relates to a circuit breaker, which includes a housing 200 and the above transmission mechanism, and the transmission mechanism is arranged in the housing 200.

[0082] A circuit breaker equipped with the transmission mechanism can effectively reduce the assembly steps of the circuit breaker and reduce the assembly cost.

[0083] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A transmission mechanism for a circuit breaker, characterized in that: include: A drive assembly (1); A bracket (3) fixed in a housing (200) of the circuit breaker; A slider (2), the driving assembly (1) is drivingly connected to the slider (2), the slider (2) is drivingly connected to the handle (100) of the circuit breaker, the slider (2) is provided with a plurality of hanging parts (22) on both sides along the sliding direction, the hanging parts (22) on both sides are respectively slidably matched with the two ends of the bracket (3), and the hanging parts (22) and the slider (2) are an integrated structure.

2. The transmission mechanism according to claim 1, characterized in that: A plurality of slide platforms (21) are protrudingly provided on the slide block (2), and the bracket (3) is pressed against the top of the slide platform (21) near the wall surface of the slide block (2).

3. The transmission mechanism according to claim 2, characterized in that: The top surface of the slide table (21) is arc-shaped.

4. The transmission mechanism according to claim 1, characterized in that: The hanging portion (22) is pressed against a wall surface of the bracket (3) away from the sliding block (2).

5. The transmission mechanism according to claim 4, characterized in that: The surface of the hanging portion (22) in contact with the wall surface of the bracket (3) is arc-shaped.

6. The transmission mechanism according to claim 1, characterized in that: The slider (2) is provided with an opening (23), the handle (100) is inserted through the opening (23), and the opening (23) is provided with flanges (24) extending in a direction away from the slider (2) on both sides relative to the handle (100), the flanges (24) being used to squeeze the handle (100).

7. The transmission mechanism according to claim 1, characterized in that: The driving component (1) comprises: A first mounting plate (11); A driving member (12) disposed on the first mounting plate (11); A cam (13) is drivingly connected to the driving member (12), and the driving member (12) drives the sliding block (2) to slide relative to the bracket (3) along a sliding direction via the cam (13); A compound gear set (14), wherein a plurality of the compound gear sets (14) are meshed and transmitted in sequence, and the driving member (12) is connected to the cam (13) through the plurality of the compound gear sets (14).

8. The transmission mechanism according to claim 7, characterized in that: The slider (2) is provided with a control hole (25), the cam (13) is provided with a thrust shaft (131), the thrust shaft (131) is placed in the control hole (25), and the thrust shaft (131) can rotate with the cam (13) and press the inner wall of the control hole (25) to make the slider (2) slide.

9. The transmission mechanism according to claim 7, characterized in that: A portion of the structure of the first mounting plate (11) is recessed inwards to form a positioning groove (111), and one end of the driving member (12) is placed in the positioning groove (111).

10. A circuit breaker, comprising a housing (200), characterized in that: It comprises the transmission mechanism according to any one of claims 1 to 9, wherein the transmission mechanism is arranged in the housing (200).

Images