Opening holding transmission device and circuit breaker
By designing a transmission device for opening and holding in the intelligent circuit breaker, the retraction structure between the rotary part and the circuit breaker bracket is used to solve the problem of high strength of the existing intelligent circuit breaker parts, and the improvement of opening and holding and safety performance is achieved.
Patent Information
- Application Number
- CN202421881035.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The opening and holding structure of existing intelligent circuit breakers has high requirements for part strength, resulting in insufficient reliability and safety performance.
A transmission device for opening and closing is designed, and the rotation of the circuit breaker and the circuit breaker are restricted by setting the rotary member to hold the circuit breaker in the rotation direction, thereby achieving opening and closing and closing.
It realizes the opening and maintenance, has a simple structure, reduces the strength requirements of parts, is easy to install, saves costs, and improves the reliability and safety performance of the product.
Smart Images
Figure CN222939847U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a transmission device for shunt holding and a circuit breaker. Background Art
[0002] With the gradual popularization of digitization and intelligence, China's independent small intelligent switches have been gradually introduced to the market, and the reliability requirements are getting higher and higher. This invention mainly solves the problems of improving the operation service life of intelligent circuit breakers and enhancing the safety performance of intelligent circuit breakers.
[0003] For some intelligent circuit breakers, the shunt is achieved by a gear hitting the tripping connecting piece inside the circuit breaker and holding the connecting piece to keep it in the tripped state. This requires high reliability of the intelligent circuit breaker and high strength of internal parts.
[0004] In view of this, it is necessary to improve the existing transmission device for shunt holding to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a transmission device for shunt holding to solve the problem that the existing shunt holding structure has high requirements for the strength of parts.
[0006] To achieve the above purpose, the utility model provides a transmission device for shunt holding, which includes a circuit breaker handle, a circuit breaker bracket connected to the circuit breaker handle, a rotating member, and a driving component for driving the circuit breaker handle and the circuit breaker bracket to rotate. The driving component includes a driving motor and a transmission gear set connecting the driving motor and the circuit breaker handle. The circuit breaker handle has a shunt state and a closing state. When the circuit breaker handle is in the shunt state, the rotating member and the circuit breaker bracket are abutted against each other along the rotation direction to limit the rotation of the circuit breaker bracket and the circuit breaker handle.
[0007] As a further improvement of the utility model, the rotating member includes a rotating main body and a rotating lower convex platform extending from the rotating main body towards the circuit breaker bracket. A limiting shaft is provided on the circuit breaker bracket. When the circuit breaker handle is in the shunt state, the rotating lower convex platform and the limiting shaft are abutted against each other along the rotation direction.
[0008] As a further improvement of the utility model, the transmission device for shunt holding further includes a base for supporting the circuit breaker bracket. The base is arranged between the rotating member and the circuit breaker bracket, and a tripping hole for the rotating lower convex platform to protrude into is provided on the base.
[0009] As a further improvement of the present utility model, the rotating member further includes a rotating upper boss disposed on a side of the rotating main body away from the rotating lower boss. The transmission gear set includes a clutch gear. A relief groove for inserting the rotating upper boss is recessed on a side of the clutch gear facing the rotating member, and a resisting block is disposed in the relief groove. The resisting block protrudes from the relief groove toward the rotating member. When the circuit breaker handle is in the open state, the rotating upper boss abuts against the resisting block.
[0010] As a further improvement of the present utility model, an inclined guiding block is disposed between the resisting block and the relief groove.
[0011] As a further improvement of the present utility model, the rotating member further includes a return spring abutted between the rotating main body and the base.
[0012] As a further improvement of the present utility model, a receiving groove is formed in the rotating main body facing the base, and one end of the return spring is received in the receiving groove.
[0013] As a further improvement of the present utility model, the rotating member further includes an extension portion protruding radially outward along the rotating main body, and the rotating lower boss is disposed at an end of the extension portion away from the rotating main body.
[0014] As a further improvement of the present utility model, the driving motor includes a worm for outputting power. The transmission gear set includes a helical gear meshing with the worm, a spur gear meshing with the helical gear, a clutch gear meshing with the spur gear, and a handle gear meshing with the clutch gear. The handle gear is connected to the circuit breaker handle to drive the circuit breaker handle to rotate.
[0015] The present utility model further provides a circuit breaker, which includes the transmission device for open state holding as described above.
[0016] The beneficial effects of the present utility model are as follows: For the transmission device for open state holding and the circuit breaker of the present utility model, by providing the rotating member, the transmission device for open state holding abuts against the circuit breaker bracket in the rotation direction during opening to limit the rotation of the circuit breaker bracket and the circuit breaker handle, thereby realizing open state holding. The structure is simple, the strength requirement for parts is low, the installation is convenient, the cost is saved, and it is locked after the opening is in place, improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a top view structural schematic diagram of the circuit breaker of the present utility model;
[0018] Figure 2 is Figure 1 a sectional structural schematic diagram taken along A-A in
[0019] Figure 3 is a schematic structural view of the closing-holding transmission device of the present utility model;
[0020] Figure 4 is a partial schematic structural view of the closing-holding transmission device of the present utility model;
[0021] Figure 5 is a schematic structural view of the clutch gear of the closing-holding transmission device of the present utility model;
[0022] Figure 6 is a schematic structural view of the rotating member of the closing-holding transmission device of the present utility model. Detailed implementation manners
[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0026] As Figures 1 to 6 shown, the circuit breaker 100 of the present utility model includes a housing 1 and a closing-holding transmission device 3 disposed inside the housing 1.
[0027] AsFigure 3 As shown, the transmission device 3 for holding the opening operation includes a circuit breaker handle 31, a circuit breaker bracket 32 connected to the circuit breaker handle 31, a rotating member 34, a base 33 for supporting the circuit breaker bracket 32, and a driving assembly 34 for driving the circuit breaker handle 31 and the circuit breaker bracket 32 to rotate.
[0028] The driving assembly 34 includes a driving motor 351 and a transmission gear set connecting the driving motor 351 and the circuit breaker handle 31.
[0029] The driving motor 351 includes a worm 3511 for outputting power. The transmission gear set includes a helical gear 352 meshing with the worm 3511, a spur gear 353 meshing with the helical gear 352, a clutch gear 354 meshing with the spur gear 353, and a handle gear 355 meshing with the clutch gear 354. The handle gear 355 is connected to the circuit breaker handle 31 to drive the circuit breaker handle 31 to rotate.
[0030] The circuit breaker handle 31 has an opening state and a closing state. When the circuit breaker handle 31 is in the opening state, the rotating member 34 and the circuit breaker bracket 32 are abutted in the rotation direction to limit the rotation of the circuit breaker bracket 32 and the circuit breaker handle 31.
[0031] As Figure 4 and Figure 6 shown, the rotating member 34 includes a rotating main body 341, a rotating lower convex platform 342 extending from the rotating main body 341 towards the circuit breaker bracket 32, a rotating upper convex platform 343 provided on the side of the rotating main body 341 away from the rotating lower convex platform 342, a rotating upper convex platform 343 protruding radially outward along the rotating main body 341, and a return spring 345 abutted between the rotating main body 341 and the base 33.
[0032] The rotating main body 341 is provided with a receiving groove 3411 facing the base 33. One end of the return spring 345 is received in the receiving groove 3411, and the other end abuts against the base 33. The receiving groove 3411 extends in the circumferential direction.
[0033] The rotating lower convex platform 342 is provided at one end of the rotating upper convex platform 343 away from the rotating main body 341.
[0034] A limiting shaft 321 is provided on the circuit breaker bracket 32. When the circuit breaker handle 31 is in the opening state, the rotating lower convex platform 342 and the limiting shaft 321 are abutted in the rotation direction.
[0035] The base 33 is arranged between the rotating member 34 and the circuit breaker bracket 32. A tripping hole 331 for the rotating lower boss 342 to protrude into is provided on the base 33, and the limiting shaft 321 protrudes towards the base 33.
[0036] As Figure 4 and Figure 5 shown, a relief groove 3541 for the rotating upper boss 343 to insert into and a resisting block 3542 arranged in the relief groove 3541 are concavely provided on one side of the clutch gear 354 facing the rotating member 34. The resisting block 3542 protrudes from the relief groove 3541 towards the rotating member 34. When the circuit breaker handle 31 is in the open state, the rotating upper boss 343 abuts against the resisting block 3542, and when the circuit breaker handle 31 is in the closed state, the rotating upper boss 343 protrudes into the relief groove 3541 under the extrusion of the return spring 345.
[0037] An inclined guiding block 3543 is provided between the resisting block 3542 and the relief groove 3541.
[0038] The working principle of the open state holding transmission device 3 is as follows:
[0039] When the circuit breaker handle 31 is in the closed state, the rotating upper boss 343 protrudes into the relief groove 3541 under the extrusion of the return spring 345; when a trip is required, the worm 3511 of the drive motor 351 drives the helical gear 352, the spur gear 353, the clutch gear 354 and the handle gear 355 to rotate in sequence, thereby driving the circuit breaker handle 31 to rotate until the circuit breaker handle 31 is in the open state. During this period, the rotating upper boss 343 is in the relief groove 3541, and the relief groove 3541 moves relative to the rotating upper boss 343, and the resisting block 3542 approaches the rotating upper boss 343;
[0040] The drive motor 351 further operates to drive the clutch gear 354 to rotate. The guiding block 3543 first contacts the rotating upper boss 343, extrudes the rotating upper boss 343 to cause the rotating member 34 to move axially, so that the rotating lower boss 342 passes through the tripping hole 331, and the rotating lower boss 342 abuts against the limiting shaft 321 along the rotation direction to limit the rotation of the circuit breaker handle 31 and keep it in the open state.
[0041] When the circuit breaker needs to be closed, the driving motor 351 needs to be further driven to rotate, and it can be rotated forward or reversely, as long as the rotating upper boss 343 can be returned to the clearance groove 3541. At this time, under the elastic action of the reset spring 345, the rotating lower boss 342 is disengaged from the limit shaft 321, and the circuit breaker can be closed.
[0042] The transmission device 3 for maintaining the opening of the switch and the circuit breaker 100 of the utility model are provided with the rotating member 34, so that the transmission device 3 for maintaining the opening of the switch abuts against the circuit breaker bracket 32 along the rotation direction when the switch is opened to limit the rotation of the circuit breaker bracket 32 and the circuit breaker handle 31, thereby achieving the opening of the switch. The structure is simple, the strength requirements of the parts are low, the installation is convenient, the cost is saved, and the switch is locked after the opening is in place, thereby improving the product reliability.
[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A transmission device for holding a brake, characterized in that: The transmission device for maintaining the opening of the circuit breaker includes a circuit breaker handle, a circuit breaker bracket connected to the circuit breaker handle, a rotating member, and a driving assembly for driving the circuit breaker handle and the circuit breaker bracket to rotate. The driving assembly includes a driving motor and a transmission gear set connecting the driving motor and the circuit breaker handle. The circuit breaker handle has an opening state and a closing state. When the circuit breaker handle is in the opening state, the rotating member abuts against the circuit breaker bracket along the rotation direction to limit the rotation of the circuit breaker bracket and the circuit breaker handle.
2. The transmission device for holding the opening brake according to claim 1, characterized in that: The rotating member includes a rotating body and a rotating lower boss arranged on the rotating body and extending toward the circuit breaker bracket. A limiting shaft is arranged on the circuit breaker bracket. When the circuit breaker handle is in an open state, the rotating lower boss abuts against the limiting shaft along the rotation direction.
3. The transmission device for opening and holding the brake according to claim 2, characterized in that: The transmission device for holding the switch opening further comprises a base for supporting the circuit breaker bracket, wherein the base is arranged between the rotating member and the circuit breaker bracket, and a tripping hole for the rotating lower boss to protrude therein is provided on the base.
4. The transmission device for opening brake retention according to claim 3, characterized in that: The rotating member also includes a rotating upper boss arranged on a side of the rotating body away from the rotating lower boss, the transmission gear set includes a clutch gear, the clutch size is recessed on a side facing the rotating member with a clearance groove for the rotating upper boss to be inserted into, and a supporting block arranged in the clearance groove, the supporting block protrudes from the clearance groove toward the rotating member, and when the circuit breaker handle is in the open state, the rotating upper boss is in contact with the supporting block.
5. The transmission device for opening and holding the brake according to claim 4, characterized in that: An inclined guide block is arranged between the abutting block and the giving way groove.
6. The transmission device for opening and holding the brake according to claim 3, characterized in that: The rotating member further includes a return spring abutting between the rotating body and the base.
7. The transmission device for opening and holding the brake according to claim 6, characterized in that: The rotating body is provided with a receiving groove toward the base, and one end of the return spring is received in the receiving groove.
8. The transmission device for opening and holding the brake according to claim 3, characterized in that: The rotating member further comprises an extension portion protruding radially outwardly along the rotating body, and the rotating lower boss is arranged at an end of the extension portion away from the rotating body.
9. The transmission device for opening and holding the brake according to claim 1, characterized in that: The drive motor includes a worm for outputting power, and the transmission gear set includes a helical gear meshing with the worm, a spur gear meshing with the helical gear, a clutch gear meshing with the spur gear, and a handle gear meshing with the clutch gear. The handle gear is connected to the circuit breaker handle to drive the circuit breaker handle to rotate.
10. A circuit breaker, characterized in that: The circuit breaker comprises a switch-opening holding transmission device as described in any one of claims 1 to 9.