A lock and release assembly for an energy storage operating mechanism

Abstract

The present invention relates to a lock and release assembly for an energy storage type operating mechanism, including a lock assembly and a release assembly, wherein the lock assembly includes a first lock shaft, a second lock shaft and a lock plate, wherein a first reset spring is arranged on the first lock shaft, and a second reset spring is arranged on the second lock shaft; a lock limit groove is arranged on the first lock shaft, and an unlocking groove is arranged on the second lock shaft, one end of the lock plate cooperates with the unlocking groove, and a limit protrusion is arranged on the energy storage assembly, and the limit protrusion cooperates with the lock limit groove. The energy storage assembly is locked by rotating the first lock shaft, and the unlocking operation is realized by rotating the second lock shaft, with fewer parts, and the internal space is fully utilized, the overall structure is simple and safe, and the risk of jamming can be reduced, and the flat design is adopted while considering the simplification of the structure and the modularization of the assembly; so that the product height and cost are reduced to about half of similar products, and the assembly efficiency is improved by more than 3 times.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker control, and in particular to a lock and release assembly for an energy storage type operating mechanism. Background Art

[0002] Most of the electric operating mechanisms used in circuit breakers on the market can be controlled remotely, and the opening or closing time takes about 1 second, which cannot meet the needs of rapid closing operations upon receiving a closing command. Therefore, an operating mechanism that can reduce the closing operation time is needed.

[0003] At present, there are many energy storage electric operating mechanisms on the market that can shorten the time to less than 100 milliseconds. They can store mechanical energy and release mechanical energy when closing is required to achieve the purpose of rapid closing. Chinese patent (CN107910235B) discloses an energy storage operating mechanism for a circuit breaker, which mainly drives the movement of the crank arm assembly therein by means of a motor electric gear set, and releases mechanical energy by means of an electromagnet to achieve rapid closing. Chinese patent (CN113421804A) discloses an energy storage operating mechanism for a circuit breaker, which realizes energy storage operation automatically and manually, and releases energy by unlocking and driving the crank arm assembly to move, thereby achieving the purpose of rapid closing.

[0004] Most pre-energy storage operating mechanisms on the market use a vertical mechanism to compress the spring to achieve energy storage, and then energize the electromagnet coil to unlock and release energy for use when the circuit breaker is closed. The energy storage operating mechanism of this structure is tall and complex, not easy to assemble and maintain, and has high cost. Due to its high height, the product cannot be used in certain places where height space is limited. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a lock and release assembly for an energy storage operating mechanism which is easy to assemble and maintain, has a low production cost, a small size, a fast response speed, and a high linkage.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a lock and release assembly for an energy storage operating mechanism, including a lock assembly for locking the energy storage assembly and a release assembly for unlocking the lock assembly, the lock assembly including a first lock shaft, a second lock shaft and a lock plate arranged on the first lock shaft, a first return spring is directly or indirectly arranged on the first lock shaft, and a second return spring is directly or indirectly arranged on the second lock shaft; a lock limit groove is arranged on the first lock shaft, and an unlocking groove is arranged on the second lock shaft, one end of the lock plate cooperates with the unlocking groove, a limiting protrusion is arranged on the energy storage assembly, and the limiting protrusion cooperates with the lock limit groove.

[0007] More specifically, the first return spring is arranged between the locking plate and the frame.

[0008] More specifically, the locking plate includes a first extending end, a second extending end and a third extending end, the first extending end cooperates with the driving protrusion on the energy storage assembly, the first return spring is arranged between the second extending end and the frame, and the third extending end cooperates with the unlocking groove.

[0009] More specifically, the middle of the groove bottom in the unlocking groove protrudes outward in the radial direction and extends from both sides of the protrusion to the two ends of the unlocking groove to form two non-parallel planes.

[0010] More specifically, the head of the third extension end is composed of two non-parallel planes.

[0011] More specifically, an unlocking plate is further provided on the second locking shaft, the second reset spring is provided between the unlocking plate and the frame, and the tripping assembly drives the unlocking plate to rotate.

[0012] Further specifically, the unlocking plate includes an unlocking sleeve fixed on the second locking shaft, a first unlocking plate and a second unlocking plate arranged on the unlocking sleeve, the tripping assembly pushes the first unlocking plate to drive the second locking shaft to rotate, and the second return spring is arranged between the second unlocking plate and the frame.

[0013] To be more specific, the tripping assembly includes a coil frame fixed on a frame, a coil is wound on the coil frame, a static iron core and a moving iron core are arranged in the coil frame, an electromagnetic reset spring is arranged between the static iron core and the moving iron core, an electromagnetic push rod is arranged on the moving iron core, and the electromagnetic push rod is used to unlock the lock assembly.

[0014] More specifically, the static iron core is located at the front end of the coil frame, the dynamic iron core is located at the rear end of the coil frame, and the electromagnetic ejector rod passes through the static iron core and can move relative to the static iron core.

[0015] More specifically, a manual button is arranged above the moving iron core, and a manual reset spring is arranged between the coil frame and the manual button.

[0016] The beneficial effects of the present invention are as follows: the energy storage assembly is locked by rotating the first locking shaft, and the unlocking operation is achieved by rotating the second locking shaft, fewer parts are used, thereby improving assembly efficiency, while fully utilizing the internal space, the overall structure is simple and has high safety, and can also reduce the risk of getting stuck. While adopting a flat design, the simplification of the structure and the modularization of the assembly are taken into consideration; the product height and cost are reduced to about half of similar products, and the assembly efficiency is increased by more than 3 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly structure of the energy storage type operating mechanism and the circuit breaker of the present invention;

[0018] Figure 2 The schematic diagram of the assembly structure of the energy storage component, the locking component and the release component of the present invention is Figure 1 ;

[0019] Figure 3 The schematic diagram of the assembly structure of the energy storage component, the locking component and the release component of the present invention is Figure 2 ;

[0020] Figure 4 It is a structural schematic diagram of the lock assembly of the present invention;

[0021] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of the A part;

[0022] Figure 6 It is a structural schematic diagram of the trip assembly of the present invention.

[0023] In the figure: 100, circuit breaker; 200, energy storage operating mechanism; 201, frame; 210, energy storage assembly; 215, limiting protrusion; 217, driving protrusion; 2153, hook; 220, lock assembly; 221, first lock shaft; 222, second lock shaft; 223, lock plate; 224, unlocking plate; 2211, lock limiting groove; 2221, unlocking groove; 2231, first extension end; 2232, second extension end; 2233, third extension end; 2241, unlocking sleeve; 2242, first unlocking plate; 2243, second unlocking plate; 230, trip assembly; 231, coil skeleton; 232, static iron core; 233, moving iron core; 234, electromagnetic push rod; 235, manual button; 236, manual reset spring. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1 The figure shows an energy storage operating mechanism 200 and a circuit breaker 100 using the opening and closing indication assembly 260 of the present application.

[0028] The energy storage operating mechanism 200 limits the energy storage component 210 after energy storage by cooperating with the locking component 220; wherein the energy storage component 210 cooperates with the locking component 220 through the limiting protrusion 215 and the driving protrusion 217 inside the energy storage component 210.

[0029] like Figure 2-Figure 4The locking assembly 220 shown includes a first locking shaft 221, a second locking shaft 222 and a locking plate 223 arranged on the first locking shaft 221, wherein a first return spring is directly or indirectly arranged on the first locking shaft 221, and a second return spring is directly or indirectly arranged on the second locking shaft 222; a locking limit groove 2211 is arranged on the first locking shaft 221, and an unlocking groove 2221 is arranged on the second locking shaft 222, one end of the locking plate 223 cooperates with the unlocking groove 2221, and the limiting protrusion 215 on the energy storage assembly 210 cooperates with the locking limit groove 2211.

[0030] The cross section of the lock limit groove 2211 is 90°. After the hook 2153 on the limiting protrusion 215 passes through the lock limit groove 2211, the first lock shaft 221 rotates so that the lock limit groove 2211 can limit the limiting protrusion 215 from resetting. One end of the first lock shaft 221 is provided with a mounting position, and a mounting hole is provided on the lock plate 223. The mounting position and the mounting hole are matched to achieve assembly, and the lock plate 223 will rotate with the rotation of the first lock shaft 221. The lock plate 223 has three protruding ends, namely a first protruding end 2231, a second protruding end 2232 and a third protruding end 2233. The first protruding end 2231 cooperates with the driving protrusion 217 provided on the energy storage slider 212, and the driving protrusion 217 can push the first protruding end 2231 to The upward movement causes the first locking shaft 221 to rotate clockwise, and the hook portion 2153 on the limiting protrusion 215 can pass through the locking limiting groove 2211. The limiting protrusion 215 continues to move. When it passes over the axis of the first locking shaft 221, it pushes the second protruding end 2232 to move upward, causing the first locking shaft 221 to rotate counterclockwise. At this time, the locking limiting groove 2211 plays a role in limiting the retreat of the hook portion 2153, and at the same time, the third protruding end 2233 is disengaged from the unlocking groove 2221; a first return spring is fixed between the second protruding end 2232 and the frame 201, and the first return spring rotates the locking plate 223 in the clockwise direction. Its function is to facilitate the locking plate 223 to pass through the unlocking groove 2221; the head of the third protruding end 2233 is used in conjunction with the unlocking groove 2221.

[0031] The rotation of the second locking shaft 222 will drive the unlocking slot 2221 to rotate, so that the unlocking slot 2221 and the third protruding end 2233 have three states. In the first state, the third protruding end 2233 is located above the second locking shaft 222, and the unlocking slot 2221 and the third protruding end 2233 are staggered, and this is a locked state; in the second state, after the unlocking slot 2221 is aligned with the third protruding end 2233, the third protruding end 2233 is no longer limited, and the first return spring pulls the second protruding end 2232 to make the locking plate 223 rotate clockwise, and the third protruding end 2233 passes through the unlocking slot 2221 and moves downward from the second locking shaft 222, and this is an unlocking state; in the third state, the third protruding end 2233 is located below the second locking shaft 222, and this is an unlocking state.

[0032] The process of energy storage locking is the process of movement of the above-mentioned limit protrusion 215 and the driving protrusion 217. The driving protrusion 217 can make the third extending end 2233 move from the bottom to the top of the second locking shaft 222. Then the second locking shaft 222 rotates through the second return spring to make the unlocking groove 2221 and the third extending end 2233 offset to realize the locking limit function.

[0033] During use, the third extension end 2233 may get stuck in the unlocking slot 2221. Figure 5 The middle of the bottom of the unlocking groove 2221 protrudes outward in the radial direction and extends from both sides of the protrusion to the two ends of the unlocking groove 2221 to form two non-parallel planes. At the same time, the head of the third protruding end 2233 is also composed of two non-parallel planes, which is convenient for entering from the top or bottom of the second locking shaft 222. At the same time, it is not easy to get stuck in the process of passing through the unlocking groove 2221, which greatly reduces the failure rate of product use.

[0034] The hook portion 2153 on the limiting protrusion 215 is provided with a limiting guide surface, which is inclined in the direction of energy storage movement. During the movement of the limiting protrusion 215, the lowest end of the inclined surface first enters the lock limiting groove 2211. If the rotation angle of the first lock shaft 221 is too small, the inclined surface also has the function of pushing the first lock shaft 221 to move clockwise.

[0035] Based on the above description, in order to ensure that the limiting protrusion 215 smoothly enters the lock limiting groove 2211 during the energy storage process, the driving protrusion 217 cooperates with the first protruding end 2231, the first return spring cooperates with the second protruding end 2232, and the limiting guide surface of the limiting protrusion 215 cooperates with the lock limiting groove 2211. Three methods are used to improve the stability of the product operation during the energy storage process.

[0036] Since two hook portions 2153 of the limiting protrusion 215 are provided during use, two lock limit grooves 2211 are also provided, and the hook portions 2153 of the limiting protrusion 215 and the lock limit grooves 2211 correspond to each other in a one-to-one manner for use.

[0037] In order to facilitate unlocking, external force is required to rotate the second locking shaft 222. An unlocking plate 224 is also provided on the second locking shaft 222. The second reset spring is provided between the unlocking plate 224 and the frame 201. The trip assembly 230 drives the unlocking plate 224 to rotate. The second reset spring can make the second locking shaft 222 rotate counterclockwise, so that the unlocking groove 2221 is staggered with the third protruding end 2233, and the trip assembly 230 can drive the unlocking plate 224 to rotate so that the second locking shaft 222 rotates clockwise, and the unlocking groove 2221 is aligned with the third protruding end 2233, thereby realizing the unlocking function.

[0038] like Figure 4 The unlocking plate 224 includes an unlocking sleeve 2241 fixed on the second locking shaft 222, a first unlocking plate 2242 and a second unlocking plate 2243 arranged on the unlocking sleeve 2241, the tripping assembly 230 pushes the first unlocking plate 2242 to drive the second locking shaft 222 to rotate, and the second return spring is arranged between the second unlocking plate 2243 and the frame 201. The first unlocking plate 2242 and the second unlocking plate 2243 are both arranged along the radial direction of the unlocking sleeve 2241. The unlocking sleeve 2241 is directly sleeved on the second locking shaft 222. The interior of the unlocking sleeve 2241 is a semicircular hole, and the corresponding part of the second locking shaft 222 is a semicircular shaft. The semicircular shaft is inserted into the semicircular hole to realize that the second locking shaft 222 rotates with the rotation of the unlocking plate 224. In the locked state, the first unlocking plate 2242 is in a horizontal state, and the second unlocking plate 2243 is located below the first unlocking plate 2242. A second return spring is fixed between the second unlocking plate 2243 and the frame 201.

[0039] like Figure 6The trip assembly 230 shown includes a coil frame 231 fixed on the frame 201, a coil is wound on the coil frame 231, a static iron core 232 and a moving iron core 233 are arranged in the coil frame 231, an electromagnetic reset spring is arranged between the static iron core 232 and the moving iron core 233, and an electromagnetic push rod 234 is arranged on the moving iron core 233, and the electromagnetic push rod 234 is used to unlock the lock assembly 220; when unlocking is required, the coil is energized to generate a magnetic field, so that the moving iron core 233 moves toward the static iron core 232 approaches, the moving iron core 233 drives the electromagnetic push rod 234 to move downward, the head of the electromagnetic push rod 234 contacts the first unlocking plate 2242 of the unlocking plate 224 and pushes the first unlocking plate 2242 downward, the first unlocking plate 2242 rotates around the axis of the unlocking sleeve 2241, thereby driving the second locking shaft 222 to rotate clockwise; after the unlocking is completed, the electromagnetic field of the coil disappears, and the moving iron core 233 drives the electromagnetic push rod 234 to reset through the electromagnetic reset spring. At this time, the unlocking plate 224 is reset by rotating counterclockwise through the second reset spring.

[0040] Furthermore, in order to realize manual unlocking control, the static iron core 232 is located at the front end of the coil skeleton 231, the moving iron core 233 is located at the rear end of the coil skeleton 231, the electromagnetic push rod 234 passes through the static iron core 232 and can move relative to the static iron core 232, a manual button 235 is arranged above the moving iron core 233, and a manual reset spring 236 is arranged between the coil skeleton 231 and the manual button 235; when unlocking, the manual button 235 is pressed, so that the moving iron core 233 drives the electromagnetic push rod 234 to move downward, and the electromagnetic push rod 234 pushes the first unlocking plate 2242 to rotate; the manual button 235 is released, the manual reset spring 236 resets the manual button 235, and the electromagnetic reset spring resets the moving iron core 233 and the electromagnetic push rod 234.

[0041] In summary, the energy storage assembly is locked by rotating the first locking shaft, and the unlocking operation is achieved by rotating the second locking shaft. Fewer parts are used, thereby improving assembly efficiency. At the same time, the internal space is fully utilized, the overall structure is simple and safe, and the risk of jamming is reduced. While adopting a flat design, the simplification of the structure and the modularization of the assembly are considered, so that the product height and cost are reduced to about half of similar products, and the assembly efficiency is improved by more than 3 times. The product height is reduced on the basis of reducing parts to save space for other functional components.

[0042] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A lock and release assembly for an energy storage operating mechanism, characterized in that: The invention comprises a locking assembly (220) for locking an energy storage assembly (210) and a release assembly (230) for unlocking the locking assembly (220), wherein the locking assembly (220) comprises a first locking shaft (221) arranged on a frame (201), a second locking shaft (222) and a locking plate (223) arranged on the first locking shaft (221), a first return spring is directly or indirectly arranged on the first locking shaft (221), and a second locking shaft (222) is arranged on the second locking shaft (223). A second return spring is directly or indirectly provided on the buckle shaft (222); a buckle limit groove (2211) is provided on the first buckle shaft (221), an unlocking groove (2221) is provided on the second buckle shaft (222), one end of the buckle plate (223) cooperates with the unlocking groove (2221), a limiting protrusion (215) is provided on the energy storage component (210), and the limiting protrusion (215) cooperates with the buckle limit groove (2211).

2. The lock and release assembly for the energy storage operating mechanism according to claim 1, characterized in that: The first return spring is arranged between the locking plate (223) and the frame (201).

3. The lock and release assembly for the energy storage operating mechanism according to claim 1, characterized in that: The locking plate (223) includes a first extending end (2231), a second extending end (2232) and a third extending end (2233), the first extending end (2231) cooperates with a driving protrusion (217) provided on the energy storage assembly (210), the first return spring is provided between the second extending end (2232) and the frame (201), and the third extending end (2233) cooperates with the unlocking groove (2221).

4. The lock and release assembly for the energy storage operating mechanism according to claim 3, characterized in that: The middle of the groove bottom in the unlocking groove (2221) protrudes outward in the radial direction and extends from both sides of the protrusion to the two ends of the unlocking groove (2221) to form two non-parallel planes.

5. The lock and release assembly for the energy storage operating mechanism according to claim 4, characterized in that: The head of the third extension end (2233) is composed of two non-parallel planes.

6. The lock and release assembly for the energy storage operating mechanism according to claim 1, characterized in that: An unlocking plate (224) is also provided on the second locking shaft (222), the second reset spring is provided between the unlocking plate (224) and the frame (201), and the tripping assembly (230) drives the unlocking plate (224) to rotate.

7. The lock and release assembly for the energy storage operating mechanism according to claim 6, characterized in that: The unlocking plate (224) comprises an unlocking sleeve (2241) fixed on the second locking shaft (222), a first unlocking plate (2242) and a second unlocking plate (2243) arranged on the unlocking sleeve (2241), the tripping assembly (230) pushes the first unlocking plate (2242) to drive the second locking shaft (222) to rotate, and the second reset spring is arranged between the second unlocking plate (2243) and the frame (201).

8. The lock and release assembly for the energy storage operating mechanism according to claim 1, characterized in that: The release assembly (230) comprises a coil frame (231) fixed on a frame (201), a coil is wound on the coil frame (231), a static iron core (232) and a moving iron core (233) are arranged in the coil frame (231), an electromagnetic reset spring is arranged between the static iron core (232) and the moving iron core (233), an electromagnetic push rod (234) is arranged on the moving iron core (233), and the electromagnetic push rod (234) is used to unlock the lock assembly (220).

9. The lock and release assembly for the energy storage operating mechanism according to claim 8, characterized in that: The static iron core (232) is located at the front end of the coil frame (231), the moving iron core (233) is located at the rear end of the coil frame (231), and the electromagnetic push rod (234) passes through the static iron core (232) and can move relative to the static iron core (232).

10. The lock and release assembly for the energy storage operating mechanism according to claim 9, characterized in that: A manual button (235) is arranged above the moving iron core (233), and a manual reset spring (236) is arranged between the coil frame (231) and the manual button (235).

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