Manual operation mechanism of circuit breaker

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and particularly discloses a manual operation mechanism of a circuit breaker. According to the manual operation mechanism of the circuit breaker, the reset piece is connected with the gear and the support, the reset piece directly applies force to the gear, the reset piece directly provides reset force for the gear, the transmission stage number of the reset force provided by the reset piece is reduced, reset force loss caused by multi-stage transmission friction is further reduced, and the service life of the circuit breaker is prolonged. The response speed during opening of the circuit breaker is improved; in addition, the reset piece is directly connected with the gear, friction between the reset piece and other parts is reduced, and the service life of the manual operation mechanism is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field especially relates to a circuit breaker's manual operation mechanism. BACKGROUND

[0002] Manual operation mechanism as one of common accessories of circuit breaker, it is mainly used to the remote operation of circuit breaker, the handle of manual operation mechanism is arranged on the cabinet door of box body, and the circuit breaker is arranged in the box body, and the handle is rotated to the corresponding position to realize the opening and closing of the circuit breaker in the box body, this kind of mode not only improves the convenience of operating circuit breaker, but also can protect the personal safety and electrical equipment well.

[0003] At present, one end of reset spring of manual operation mechanism is connected with sliding plate, the other end of reset spring is connected with the support of circuit breaker, sliding plate is engaged with gear, gear is connected with rotating shaft, rotating shaft rotates and drives gear to rotate, gear rotation drives sliding plate to slide between closing position and opening position, and then realizes the closing or opening of circuit breaker. In the process of manual operation mechanism working, because reset spring is connected with sliding plate, when the circuit breaker opens, the reset force of reset spring is transmitted to gear through sliding member, and the reset force is lost due to multi-stage transmission, and then the effect of circuit breaker opening is affected. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of manual operation mechanisms of circuit breaker, reduce the reset force loss caused by multi-stage transmission friction, improve the response speed of circuit breaker opening, effectively increase the service life of manual operation mechanism.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The manual operation mechanism of circuit breaker, comprising:

[0007] support;

[0008] operation shaft, the operation shaft is rotatably connected with the support, and the operation shaft is connected with a gear;

[0009] sliding member, which is slidably connected with the support, the sliding member is provided with an engaging portion, the engaging portion is engaged with the gear, the operation shaft is rotated to drive the gear to rotate, and the gear is rotated to drive the sliding member to switch between closing position and opening position;

[0010] reset member, one end of the reset member is connected with the gear, the other end of the reset member is connected with the support, and the reset member is configured to provide a reset force for sliding the sliding member towards the opening position.

[0011] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the gear is provided with a first connecting part, the support is provided with a second connecting part, one end of the reset member is connected with the first connecting part, and the other end of the reset member is connected with the second connecting part.

[0012] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the reset member comprises an elastic member, the first connecting part comprises a connecting hole arranged on the gear, the second connecting part comprises a connecting rod, one end of the connecting rod is connected with the support, a hook at one end of the elastic member is hooked on the connecting hole, and a hook at the other end of the elastic member is hooked on the connecting rod.

[0013] As an optional technical scheme of the manual operating mechanism of the circuit breaker, a plurality of connecting holes are arranged on the gear, and the positions of the plurality of connecting holes on the gear are different.

[0014] The connecting rod is provided with a plurality of connecting rods, and the positions of the plurality of connecting rods connected with the support are different.

[0015] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the gear comprises a semicircular first gear part and a fan-shaped second gear part, a top end of the second gear part is connected with a straight end of the first gear part, the first gear part is connected with the operating shaft, an arc segment of the second gear part is provided with a plurality of meshing teeth, the meshing teeth are meshed with the meshing part, and the connecting hole is arranged on the second gear part.

[0016] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the connecting hole is arranged at an edge of a first straight segment of the second gear part, and when the sliding member is in the closing position, the connecting rod is arranged on one side of a second straight segment of the second gear part.

[0017] As an optional technical scheme of the manual operating mechanism of the circuit breaker, one end of the operating shaft is provided with a protrusion in the circumferential direction, the support is provided with a through hole, one end of the operating shaft passes through the through hole and is connected with the gear, and the protrusion abuts against the support.

[0018] As an optional technical scheme of the manual operating mechanism of the circuit breaker, a gasket is arranged between the operating shaft and the gear, a diameter of the gasket is greater than a hole diameter of the through hole, and the gear and the gasket are fixedly connected with an end of the operating shaft.

[0019] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the sliding piece comprises a first plate, one end of the first plate is connected with a second plate, the other end of the first plate is connected with a third plate, the second plate and the third plate extend towards the same side of the first plate, the third plate is connected with a fourth plate, the fourth plate extends away from the second plate, the second plate is connected with a sliding block, and the sliding block extends away from the third plate, and the sliding block and the fourth plate are slidably connected with the support respectively.

[0020] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the support comprises a side plate and a top plate, the top plate is connected with one end of the side plate, the top plate extends towards one side of the side plate, the top plate is provided with a first sliding groove, the sliding block is slidably arranged in the first sliding groove, and the side plate is provided with a sliding rail, and the fourth plate is slidably connected with the sliding rail.

[0021] As an optional technical scheme of the manual operating mechanism of the circuit breaker, the sliding rail comprises a sliding rail backing plate and a sliding rail pressing plate, the sliding rail backing plate is connected with the side plate, the sliding rail pressing plate is connected with the sliding rail backing plate, the width of the sliding rail pressing plate is greater than that of the sliding rail backing plate, a second sliding groove is formed between the sliding rail pressing plate and the side plate, and the fourth plate is slidably arranged in the second sliding groove.

[0022] The manual operating mechanism of the circuit breaker has the beneficial effects that:

[0023] The manual operating mechanism of the circuit breaker has the beneficial effects that: BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is an exploded view of the manual operating mechanism provided by the utility model embodiment;

[0025] Figure 2 is an axial side view of the manual operating mechanism provided by the utility model embodiment;

[0026] Figure 3 is a state schematic view of the manual operating mechanism when the circuit breaker is in the closing state provided by the utility model embodiment;

[0027] Figure 4 is a state schematic view of the manual operating mechanism when the circuit breaker is in the opening state provided by the utility model embodiment;

[0028] Figure 5 is a structural schematic view of a gear provided by an embodiment of the present application;

[0029] Figure 6 is a connection structure schematic view of a gear, a reset member and a bracket provided by an embodiment of the present application;

[0030] Figure 7 is a structural schematic view of a sliding member provided by an embodiment of the present application.

[0031] In the figure:

[0032] 1, bracket; 2, operation shaft; 3, gear; 4, sliding member; 5, reset member; 6, gasket; 7, sliding rail;

[0033] 11, second connecting part; 12, through hole; 13, side plate; 14, top plate; 141, first sliding groove; 15, bottom plate; 16, first connecting plate; 17, second connecting plate;

[0034] 21, protruding block; 22, square hole; 23, bolt;

[0035] 31, first connecting part; 311, connecting hole; 32, first gear part; 33, second gear part; 331, meshing tooth; 332, first straight line segment; 333, second straight line segment;

[0036] 41, meshing part; 411, meshing hole; 42, first plate; 43, second plate; 44, third plate; 45, fourth plate; 46, sliding block;

[0037] 71, sliding rail gasket; 72, sliding rail pressing plate; 73, second sliding groove. DETAILED DESCRIPTION

[0038] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0039] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] like Figures 1 to 3 As shown, this embodiment provides a manual operating mechanism for a circuit breaker, which includes a bracket 1, an operating shaft 2, a sliding member 4, and a reset member 5. The operating shaft 2 is rotatably connected to the bracket 1 and is connected to a gear 3. The sliding member 4 is slidably connected to the bracket 1 and has a meshing part 41 that meshes with the gear 3. Rotation of the operating shaft 2 drives the gear 3 to rotate, which in turn drives the sliding member 4 to switch between the closed and open positions. One end of the reset member 5 is connected to the gear 3, and the other end is connected to the bracket 1. The reset member 5 is configured to provide a reset force that causes the sliding member 4 to slide toward the open position. The reset component 5 is connected to the gear 3 and the bracket 1. The reset component 5 directly applies force to the gear 3 and provides a reset force directly to the gear 3. This reduces the number of transmission stages of the reset force provided by the reset component 5, thereby reducing the reset force loss caused by friction in multi-stage transmission and improving the response speed of the circuit breaker when it is tripped. In addition, the reset component 5 is directly connected to the gear 3, which reduces the friction between the reset component 5 and other components, thereby extending the service life of the manual operating mechanism.

[0043] Combination Figure 1 and Figure 2As shown, the bracket 1 is provided with a through hole 12, one end of the operating shaft 2 is provided with a protrusion 21 in the circumferential direction, the one end of the operating shaft 2 penetrates the through hole 12 and is connected with the gear 3, and the protrusion 21 abuts against the bracket 1. The cooperation between the protrusion 21 and the gear 3 makes the operating shaft 2 not disengage from the bracket 1. The diameter of the through hole 12 is slightly larger than the outer diameter of the operating shaft 2 and smaller than the outer diameter of the protrusion 21, and the operating shaft 2 can rotate relative to the bracket 1. Alternatively, the bracket 1 comprises a side plate 13, the through hole 12 is arranged on the side plate 13, the protrusion 21 is arranged on one side of the side plate 13, and the one end of the operating shaft 2 penetrating the through hole 12 and connected with the gear 3 is arranged on the other side of the side plate 13.

[0044] The other end of the operating shaft 2 is provided with a square hole 22, the side wall of the operating shaft 2 is provided with a threaded hole in communication with the square hole 22, an operating rod (not shown in the figure) is inserted into the square hole 22, and a bolt 23 is screwed into the threaded hole and abuts against the operating rod, so that the operating rod is fixed in the square hole 22. The operating personnel can rotate the operating shaft 2 by holding the operating rod, thereby remotely operating the circuit breaker to open and close the circuit.

[0045] Referring to Figure 1 and Figure 3 As shown, a gasket 6 is arranged between the operating shaft 2 and the gear 3, the diameter of the gasket 6 is greater than the diameter of the through hole 12, and the gear 3 and the gasket 6 are fixedly connected with the end of the one end of the operating shaft 2. The cooperation between the gasket 6 and the protrusion 21 makes the operating shaft 2 not disengage from the bracket 1, and the number of the gaskets 6 is not limited, and the position of the gear 3 can be adjusted by adjusting the number of the gaskets 6, so that the gear 3 can engage with the meshing part 41 of the sliding member 4.

[0046] As shown in Figure 1 , Figure 3 and Figure 4 The reset member 5 is connected with the gear 3 and the bracket 1, and in some embodiments, the gear 3 is provided with a first connecting part 31, the bracket 1 is provided with a second connecting part 11, one end of the reset member 5 is connected with the first connecting part 31, and the other end of the reset member 5 is connected with the second connecting part 11. The first connecting part 31 and the second connecting part 11 are arranged to fix the reset member 5, so that the reset member 5 is not easy to fall off, thereby ensuring the stability of the circuit breaker to open and close the circuit.

[0047] Alternatively, the reset member 5 comprises an elastic member, the first connecting part 31 comprises a connecting hole 311 arranged on the gear 3, the second connecting part 11 comprises a connecting rod, one end of the connecting rod is connected with the bracket 1, a hook at one end of the elastic member is hooked on the connecting hole 311, and a hook at the other end of the elastic member is hooked on the connecting rod. The fixing structure of the elastic member is simple, only a hole needs to be punched on the gear 3, thereby reducing the processing technology and processing cost, and the hook of the elastic member is hooked on the connecting hole 311 and the connecting rod, so that the elastic member is not easy to fall off.

[0048] The connecting holes 311 are arranged in plurality, and the plurality of connecting holes 311 are arranged at different positions on the gear 3. The connecting rods are arranged in plurality, and the plurality of connecting rods are arranged at different positions connected with the bracket 1. According to the actual working requirements of the manual operating mechanism, the elastic member can be hooked on different connecting holes 311 or different connecting rods, thereby expanding the application range of the manual operating mechanism.

[0049] The connecting rod can be a screw rod, the screw rod passes through the bracket 1, a nut is screwed on the screw rod, the screw rod is fixed on the bracket 1 by locking the nut and the screw rod, and the hook at the other end of the elastic member is hooked on the screw rod. Alternatively, the connecting rod is welded with the bracket 1. In other embodiments, the second connecting part 11 comprises a fixing block, and the fixing block is an integrated connection structure with the bracket 1.

[0050] In other embodiments, the first connecting part 31 comprises a screw rod, the screw rod passes through the gear 3, a nut is screwed on the screw rod, the screw rod is fixed on the gear 3 by locking the nut and the screw rod, and the hook at one end of the elastic member is hooked on the screw rod.

[0051] The above-mentioned elastic member can be a compression spring, a gas spring, etc. In other embodiments, the reset member 5 can be a hydraulic or pneumatic device, which provides a hydraulic driving force or a pneumatic driving force to assist the rotation of the gear 3, so that the circuit breaker can be tripped as soon as possible.

[0052] As shown in Figure 4 , Figure 5 and Figure 6 , the gear 3 comprises a semicircular first gear part 32 and a fan-shaped second gear part 33, the top end of the second gear part 33 is connected with the straight end of the first gear part 32, the first gear part 32 is connected with the operating shaft 2, the arc segment of the second gear part 33 is provided with a plurality of meshing teeth 331, the meshing teeth 331 are meshed with the meshing part 41, and the connecting hole 311 is arranged on the second gear part 33, so that the reset force of the elastic member applied on the gear 3 is closer to the meshing teeth 331, and the response speed of the circuit breaker when tripped is further improved.

[0053] Further optionally, the connecting hole 311 is arranged at the edge of the first straight segment 332 of the second gear part 33, and the connecting rod is arranged on one side of the second straight segment 333 of the second gear part 33 when the sliding member 4 is in the closing position. The connecting hole 311 and the connecting rod are arranged on both sides of the second gear part 33, and the elastic force accumulated by the elastic member is greater when the sliding member 4 is in the closing position, the elastic force (i.e. the reset force) applied on the gear 3 by the elastic member is greater when the sliding member 4 moves from the closing position to the tripping position, and the response speed of the circuit breaker when tripped is further improved.

[0054] As shown in Figure 4 , Figure 6 and Figure 7As shown, the engaging portion 41 of the sliding piece 4 is engaged with the gear 3, and the engaging portion 41 comprises a plurality of engaging holes 411 which are arranged on the sliding piece 4 and are spaced apart along the sliding direction of the sliding piece 4, and the engaging holes 411 are used for inserting the engaging teeth 331 of the gear 3.

[0055] The sliding piece 4 comprises a first plate 42, one end of the first plate 42 is connected with a second plate 43, the other end of the first plate 42 is connected with a third plate 44, the second plate 43 and the third plate 44 extend towards the same side of the first plate 42, and the plurality of engaging holes 411 are arranged on the third plate 44. The third plate 44 is connected with a fourth plate 45 which extends away from the second plate 43, and the second plate 43 is connected with a sliding block 46 which extends away from the third plate 44, and the sliding block 46 and the fourth plate 45 are respectively slidably connected with the bracket 1. The sliding block 46 and the fourth plate 45 of the sliding piece 4 are respectively slidably connected with the bracket 1, the sliding block 46 and the fourth plate 45 are oppositely arranged, the stability of the movement of the sliding piece 4 is improved, and the sliding piece 4 is uniformly stressed when sliding.

[0056] Referring to Figure 1 and Figure 3 As shown, the bracket 1 further comprises a top plate 14 which is connected with one end of the side plate 13 and extends towards one side of the side plate 13, and the top plate 14 is provided with a first sliding groove 141 in which the sliding block 46 is slidably arranged, and the side plate 13 is provided with a slide rail 7 which is slidably connected with the fourth plate 45. The structure that the sliding piece 4 is slidably connected with the bracket 1 is simple, the machining process is simplified, and the machining cost is reduced.

[0057] In some other embodiments, a track is arranged on the top plate 14, and the sliding block 46 is slidably arranged on the track.

[0058] The slide rail 7 comprises a slide rail backing plate 71 and a slide rail pressing plate 72, the slide rail backing plate 71 is connected with the side plate 13, the slide rail pressing plate 72 is connected with the slide rail backing plate 71, the width of the slide rail pressing plate 72 is greater than that of the slide rail backing plate 71, a second sliding groove 73 is formed between the slide rail pressing plate 72 and the side plate 13, and the fourth plate 45 is slidably arranged in the second sliding groove 73. The number of the slide rail backing plates 71 can be set according to the position and thickness of the fourth plate 45, as long as the fourth plate 45 can be slidably arranged in the second sliding groove 73.

[0059] The bracket 1 further comprises a bottom plate 15 which is connected with the other end of the side plate 13 and extends in the same direction as the top plate 14, and the gear 3 and the sliding piece 4 are arranged in the space enclosed by the side plate 13, the top plate 14 and the bottom plate 15.

[0060] The first connecting plate 16 is provided with at least two, and the second connecting plate 17 is provided with at least two, so as to improve the stability of the bracket 1 and the circuit breaker.

[0061] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A manual operating mechanism for a circuit breaker, characterized in that, include: Frame (1); An operating shaft (2) is rotatably connected to the bracket (1), and a gear (3) is connected to the operating shaft (2); The sliding member (4) is slidably connected to the bracket (1). The sliding member (4) is provided with a meshing part (41). The meshing part (41) meshes with the gear (3). The operation shaft (2) rotates to drive the gear (3) to rotate. The gear (3) rotates to drive the sliding member (4) to switch between the closed position and the open position. A reset member (5), one end of which is connected to the gear (3) and the other end of which is connected to the bracket (1), is configured to provide a reset force that causes the slider (4) to slide toward the open position.

2. The manual operating mechanism of the circuit breaker according to claim 1, characterized in that, The gear (3) is provided with a first connecting part (31), the bracket (1) is provided with a second connecting part (11), one end of the reset member (5) is connected to the first connecting part (31), and the other end of the reset member (5) is connected to the second connecting part (11).

3. The manual operating mechanism of the circuit breaker according to claim 2, characterized in that, The reset component (5) includes an elastic element, the first connecting part (31) includes a connecting hole (311) disposed on the gear (3), the second connecting part (11) includes a connecting rod, one end of the connecting rod is connected to the bracket (1), the hook at one end of the elastic element is hooked to the connecting hole (311), and the hook at the other end of the elastic element is hooked to the connecting rod.

4. The manual operating mechanism of the circuit breaker according to claim 3, characterized in that, Multiple connecting holes (311) are provided, and the multiple connecting holes (311) are located at different positions on the gear (3); The connecting rods are provided in multiple positions, and the multiple connecting rods are connected to the bracket (1) at different positions.

5. The manual operating mechanism of the circuit breaker according to claim 3 or 4, characterized in that, The gear (3) includes a semi-circular first gear part (32) and a sector-shaped second gear part (33). The top end of the second gear part (33) is connected to the straight end of the first gear part (32). The first gear part (32) is connected to the operating shaft (2). The arc segment of the second gear part (33) is provided with a plurality of meshing teeth (331). The meshing teeth (331) mesh with the meshing part (41). The connecting hole (311) is provided on the second gear part (33).

6. The manual operating mechanism of the circuit breaker according to claim 5, characterized in that, The connecting hole (311) is located at the edge of the first straight segment (332) of the second gear part (33). When the sliding member (4) is in the closed position, the connecting rod is located on one side of the second straight segment (333) of the second gear part (33).

7. The manual operating mechanism of the circuit breaker according to claim 1, characterized in that, One end of the operating shaft (2) is provided with a protrusion (21) along the circumferential direction. The bracket (1) is provided with a through hole (12). One end of the operating shaft (2) passes through the through hole (12) and is connected to the gear (3). The protrusion (21) abuts against the bracket (1).

8. The manual operating mechanism of the circuit breaker according to claim 7, characterized in that, A shim (6) is provided between the operating shaft (2) and the gear (3). The diameter of the shim (6) is larger than the diameter of the through hole (12). The gear (3) and the shim (6) are fixedly connected to one end of the operating shaft (2).

9. The manual operating mechanism of the circuit breaker according to claim 1, characterized in that, The sliding member (4) includes a first plate (42), one end of which is connected to a second plate (43), and the other end of which is connected to a third plate (44). The second plate (43) and the third plate (44) extend toward the same side of the first plate (42). The third plate (44) is connected to a fourth plate (45), which extends toward a direction away from the second plate (43). The second plate (43) is connected to a slider (46), which extends toward a direction away from the third plate (44). The slider (46) and the fourth plate (45) are slidably connected to the bracket (1).

10. The manual operating mechanism of the circuit breaker according to claim 9, characterized in that, The bracket (1) includes a side plate (13) and a top plate (14). The top plate (14) is connected to one end of the side plate (13). The top plate (14) extends toward one side of the side plate (13). The top plate (14) is provided with a first sliding groove (141). The slider (46) is slidably disposed in the first sliding groove (141). The side plate (13) is provided with a slide rail (7). The fourth plate (45) is slidably connected to the slide rail (7).

11. The manual operating mechanism of the circuit breaker according to claim 10, characterized in that, The slide rail (7) includes a slide rail pad (71) and a slide rail pressure plate (72). The slide rail pad (71) is connected to the side plate (13), and the slide rail pressure plate (72) is connected to the slide rail pad (71). The width of the slide rail pressure plate (72) is greater than that of the slide rail pad (71). A second slide groove (73) is formed between the slide rail pressure plate (72) and the side plate (13). The fourth plate (45) is slidably disposed in the second slide groove (73).

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