A clutch mechanism for an electric operating mechanism of a circuit breaker

Abstract

The present invention belongs to the technical field of circuit breaker operating mechanism, and specifically relates to a clutch mechanism for an electric operating mechanism of a circuit breaker, including an active member, a driven member, a control block and a bidirectional holding mechanism; the active member and the driven member form a coaxial rotation arrangement; the control block includes a transfer part and a clamping part, and the control block is rotatably connected to the driven member via the transfer part; the driven member is provided with a disengagement position and a closing position, and the clamping part of the control block reciprocates between the disengagement position and the closing position; the bidirectional holding mechanism connects the control block and the driven member; the inner ring surface of the active member is provided with a plurality of clamping grooves for cooperating with the clamping part of the control block. The clutch mechanism for the electric operating mechanism of the circuit breaker has a simple structure, a small size, and a low cost, and is convenient for the circuit breaker mechanism to perform electric and manual closing or opening.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and particularly relates to a clutch mechanism for an electric operating mechanism of a circuit breaker. Background Art

[0002] The circuit breaker mechanism needs to be able to close both electrically and manually, and can trip and open after closing. The existing circuit breaker mechanisms use clutches to achieve electric and manual closing, as well as tripping and opening after closing. However, the existing one-way clutches cannot achieve two-way separation, and the existing two-way clutches have complex structures, large volumes, high costs, and are not easy to assemble in the circuit breaker mechanism. Therefore, there is an urgent need for a clutch mechanism to achieve closing and opening of the electric operating mechanism of the circuit breaker. Summary of the Invention

[0003] The purpose of the invention is to provide a clutch mechanism for an electric operating mechanism of a circuit breaker to solve the above technical problems.

[0004] To solve the above technical problems, the invention provides a clutch mechanism for an electric operating mechanism of a circuit breaker, including a driving member, a driven member, a control block, and a two-way holding mechanism;

[0005] The driving member and the driven member are arranged to rotate coaxially;

[0006] The control block includes a transfer portion and a clamping portion, and the control block is rotationally connected to the driven member through the transfer portion;

[0007] The driven member is provided with a disengaging position and a closing position, and the clamping portion of the control block reciprocates between the disengaging position and the closing position;

[0008] The two-way holding mechanism connects the control block and the driven member;

[0009] A plurality of clamping grooves for cooperating with the clamping portion of the control block are arranged on the inner circumferential surface of the driving member;

[0010] When the clamping portion of the control block rotates with the driven member to the closing position, the clamping portion on the control block forms a clamping fit with the clamping groove of the driving member, and the two-way holding mechanism is adapted to keep the clamping portion of the control block at the closing position so that the driving member and the driven member rotate synchronously;

[0011] When the clamping portion of the control block is rotated to the disengaging position by an external force, the clamping portion on the control block disengages from the clamping groove of the driving member, and the two-way holding mechanism is adapted to keep the clamping portion of the control block at the disengaging position so that the driving member and the driven member rotate relatively.

[0012] Further: The control block includes a clamping block, a transmission block, and a rotating shaft;

[0013] The rotating shaft is rotatably connected to the driven member;

[0014] The clamping block includes a transfer portion and a clamping portion. The transfer portion of the clamping block is connected to the rotating shaft and is adapted to rotate synchronously with the rotating shaft. The clamping portion of the clamping block is adapted to cooperate with the clamping groove of the driving member;

[0015] The transmission block includes a transfer portion and a connecting portion. The transfer portion of the transmission block is connected to the rotating shaft and is adapted to drive the rotating shaft to rotate. The connecting portion of the transmission block is connected to the bi-directional holding mechanism;

[0016] When the clamping portion of the clamping block rotates with the driven member to the closed position, the clamping portion of the clamping block forms a clamping fit with the clamping groove of the driving member. The bi-directional holding mechanism drives the clamping portion of the clamping block through the transmission block and the rotating shaft to maintain the clamping fit with the clamping groove of the driving member, so that the driving member and the driven member rotate synchronously;

[0017] When the clamping portion of the clamping block rotates under an external force to the disengaged position, the clamping portion on the clamping block disengages from the clamping groove of the driving member. The bi-directional holding mechanism drives the clamping portion of the clamping block through the transmission block and the rotating shaft to maintain disengagement from the clamping groove of the driving member, so that the driving member and the driven member rotate relatively.

[0018] Further: The bi-directional holding mechanism includes a tension spring and a tension spring shaft. The tension spring shaft is fixedly connected to the driven member. One end of the tension spring is connected to the tension spring shaft, and the other end of the tension spring is connected to the connecting portion of the transmission block. The transfer portion of the transmission block is located between the tension spring shaft and the connecting portion of the transmission block.

[0019] Further: A bracket is fixedly provided on the driven member, the tension spring shaft is fixedly provided on the bracket, and the upper end of the rotating shaft passes through the bracket.

[0020] Further: It further includes a machine shell. A motor and a gear transmission mechanism are arranged in the machine shell. The driving member is a gear ring, and the gear transmission mechanism connects the motor and the gear ring.

[0021] The beneficial effect of the present invention is that for the clutch mechanism of the circuit breaker electric operating mechanism of the present invention, during use, when the clamping portion of the control block rotates with the driven member to the closed position, the clamping portion on the control block forms a clamping fit with the clamping groove of the driving member. The bi-directional holding mechanism is adapted to keep the clamping portion of the control block in the closed position, so that the driving member and the driven member rotate synchronously;

[0022] When the clamping portion of the control block rotates under an external force to the disengaged position, the clamping portion on the control block disengages from the clamping groove of the driving member. The bi-directional holding mechanism is adapted to keep the clamping portion of the control block in the disengaged position, so that the driving member and the driven member rotate relatively.

[0023] Meanwhile, the clutch mechanism of the present invention has a simple structure, small volume, and low processing and production costs, and is convenient to be installed on the operating mechanism of the circuit breaker, facilitating the circuit breaker operating mechanism to perform opening and closing operations electrically and manually.

[0024] Other features and advantages of the present invention will be described in the subsequent description, and part of them will be obvious from the description or understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the description, claims, and drawings.

[0025] To make the above objectives, features, and advantages of the present invention more obvious and understandable, the following specifically provides preferred embodiments and, in conjunction with the accompanying drawings, detailed descriptions are as follows. Description of the Drawings

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a perspective view of a preferred embodiment when the control block of the present invention is at the disengaged position;

[0028] Figure 2 is a perspective view of a preferred embodiment of the driving member of the present invention;

[0029] Figure 3 is a perspective view of a preferred embodiment of the driven member of the present invention;

[0030] Figure 4 is a perspective view of a preferred embodiment of the control block of the present invention;

[0031] Figure 5 is a perspective view of a preferred embodiment when the control block of the present invention is at the closed position;

[0032] Figure 6 is a perspective view of a preferred embodiment of the bi-directional holding mechanism of the present invention.

[0033] In the figure:

[0034] 1. Housing; 3. Driving member; 31. Clamping groove; 4. Driven member; 41. Closed position; 42. Disengaged position; 5. Control block; 51. Clamping block; 511. Clamping portion; 52. Transmission block; 53. Rotating shaft; 6. Bi-directional holding mechanism; 61. Tension spring; 62. Tension spring shaft; 7. Bracket; 8. Motor. Detailed Embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Figure 1 It is a schematic diagram of a preferred embodiment of the clutch mechanism for the electric operating mechanism of the circuit breaker of the present invention;

[0037] As Figures 1 to 3 shown, this embodiment provides a clutch mechanism for the electric operating mechanism of a circuit breaker, including a housing 1, a driving member 3, a driven member 4, a control block 5, and a bi-directional holding mechanism 6. The driving member 3 and the driven member 4 are rotatably arranged coaxially. The control block 5 includes a transfer portion and a clamping portion 511. The control block 5 is rotatably connected to the driven member 4 through the transfer portion. The driven member 4 is provided with a disengaging position 42 and an engaging position 41. The clamping portion 511 of the control block 5 reciprocates between the disengaging position 42 and the engaging position 41. The bi-directional holding mechanism 6 connects the control block 5 and the driven member 4. A plurality of clamping grooves 31 for cooperating with the clamping portion 511 of the control block 5 are arranged on the inner circumferential surface of the driving member 3. A motor 8 and a gear transmission mechanism are arranged in the housing 1. The driving member 3 is a toothed ring, and the gear transmission mechanism 2 is used to connect the motor 8 and the toothed ring.

[0038] Specifically, when the clamping portion 511 of the control block 5 rotates with the driven member 4 to the engaging position 41, the clamping portion 511 on the control block 5 forms a clamping fit with the clamping groove 31 of the driving member 3, and the bi-directional holding mechanism 6 is adapted to keep the clamping portion 511 of the control block 5 at the engaging position 41 so that the driving member 3 and the driven member 4 rotate synchronously.

[0039] When the clamping portion 511 of the control block 5 is rotated to the disengaging position 42 by an external force, the clamping portion 511 on the control block 5 disengages from the clamping groove 31 of the driving member 3, and the bi-directional holding mechanism 6 is adapted to keep the clamping portion 511 of the control block 5 at the disengaging position 42 so that the driving member 3 and the driven member 4 rotate relatively.

[0040] Figure 4 It is an optional three-dimensional view of the control block 5 of the present invention;

[0041] Optionally, in this embodiment, the control block 5 includes a clamping block 51, a transmission block 52, and a rotating shaft 53. The rotating shaft 53 is rotatably connected to the driven member 4. The transmission block 52 is arranged at the upper end of the rotating shaft 53, and the clamping block 51 is arranged at the lower end of the rotating shaft 53.

[0042] Specifically, the clamping block 51 includes a transfer portion and a clamping portion 511. The transfer portion of the clamping block 51 is rotationally connected (i.e., fixedly connected) synchronously with the rotating shaft 53, and the clamping portion 511 of the clamping block 51 is adapted to the clamping groove 31 of the driving member 3.

[0043] Specifically, the transmission block 52 includes a transfer portion and a connecting portion. The transfer portion of the transmission block 52 is fixedly connected to the rotating shaft 53 and is adapted to drive the rotating shaft 53 to rotate. The connecting portion of the transmission block 52 is connected to the bi-directional holding mechanism 6.

[0044] As Figure 5 shown, when the clamping portion 511 of the clamping block 51 rotates with the driven member 4 to the closing station 41, the clamping portion 511 of the clamping block 51 forms a clamping fit with the clamping groove 31 of the driving member 3. The bi-directional holding mechanism 6 drives the clamping portion 511 of the clamping block 51 to maintain the clamping fit with the clamping groove 31 of the driving member 3 through the transmission block 52 and the rotating shaft 53, so that the driving member 3 and the driven member 4 rotate synchronously.

[0045] As Figure 1 shown, when the clamping portion 511 of the clamping block 51 rotates under an external force to the disengaging station 42, the clamping portion 511 on the clamping block 51 disengages from the clamping groove 31 of the driving member 3. The bi-directional holding mechanism 6 drives the clamping portion 511 of the clamping block 51 to maintain the disengagement from the clamping groove 31 of the driving member 3 through the transmission block 52 and the rotating shaft 53, so that the driving member 3 and the driven member 4 rotate relatively.

[0046] Figure 6 is an optional perspective view of the bi-directional holding mechanism 6 of the present invention;

[0047] Specifically, the bi-directional holding mechanism 6 in this embodiment includes a tension spring 61 and a tension spring shaft 62. The tension spring shaft 62 is fixedly connected to the driven member 4. One end of the tension spring 61 is connected to the tension spring shaft 62, and the other end of the tension spring 61 is connected to the connecting portion of the transmission block 52. The transfer portion of the transmission block 52 is located between the tension spring shaft 62 and the connecting portion of the transmission block 52.

[0048] The connecting portion of the transmission block 52 is a pin shaft in this embodiment. The pin shaft is fixedly arranged on the transmission block, and the function of the pin shaft is the same as that of the tension spring shaft 62, both of which are used to connect the tension spring 61.

[0049] Figure 6 is an optional perspective view of the bracket 7 of the present invention;

[0050] Optionally, a bracket 7 is fixedly arranged on the driven member 4, the tension spring shaft 62 is fixedly arranged on the bracket 7, and the upper end of the rotating shaft 53 passes through the bracket 7. The bracket 7 can increase the support and transmission strength of the rotating shaft 53.

[0051] In summary,

[0052] When the clutch mechanism for the electric operating mechanism of the circuit breaker is in use and the circuit breaker mechanism performs a tripping operation, the energy storage main shaft on the circuit breaker mechanism drives the driven member 4 and the control block 5 to rotate counterclockwise. When the control block 5 is blocked by the stop pin fixed in the machine case 1, it rotates clockwise, causing the engaging portion 511 of the engaging block 51 to rotate around the rotating shaft 53 to the closed position 41. The pin shaft center on the connecting portion of the transmission block 52 crosses the center connection line between the rotating shaft 53 center and the tension spring shaft 62 center. The tension spring shaft 62 drives the transmission block 52 to rotate, the transmission block 52 drives the rotating shaft 53 to rotate, the rotating shaft 53 drives the engaging block 51 to rotate, so that the engaging portion 511 of the engaging block 51 forms an engaging fit with the engaging groove 31 of the driving member 3, and maintains the engagement under the action of the tension spring 61, so that the driving member 3 and the driven member 4 rotate synchronously.

[0053] When the circuit breaker mechanism is in the closing position, the rotating dial on the circuit breaker mechanism drives the transmission block 52 and the engaging block 51 to rotate to the disengaged position in sequence. The pin shaft center on the connecting portion of the transmission block 52 crosses the center connection line between the rotating shaft 53 center and the tension spring shaft 62 center. The tension spring shaft 62 drives the transmission block 52 to rotate, the transmission block 52 drives the rotating shaft 53 to rotate, the rotating shaft 53 drives the engaging block 51 to rotate, so that the engaging portion 511 on the engaging block 51 disengages from the engaging groove 31 of the driving member 3, and maintains the disengagement under the action of the tension spring 61, so that the driving member 3 and the driven member 4 rotate relatively.

[0054] The clutch mechanism of the present invention has a simple structure, a small volume, and low processing and production costs, and is convenient to be installed on the circuit breaker operating mechanism, facilitating the circuit breaker operating mechanism to perform tripping and closing electrically and manually.

[0055] All the device components selected in this application are common standard components or components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In several embodiments provided by this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are only illustrative.

[0058] Inspired by the above-described ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A clutch mechanism for an electric operating mechanism of a circuit breaker, characterized in that: It includes a driving member (3), a driven member (4), a control block (5) and a two-way holding mechanism (6); The driving member (3) and the driven member (4) are rotatably arranged coaxially; The control block (5) includes a transfer portion and a clamping portion (511), and the control block (5) is rotatably connected to the driven member (4) through the transfer portion; The driven member (4) is provided with a disengaging position (42) and a closing position (41), and the clamping portion (511) of the control block (5) reciprocates between the disengaging position (42) and the closing position (41); The two-way holding mechanism (6) connects the control block (5) and the driven member (4); A plurality of clamping grooves (31) for cooperating with the clamping portion (511) of the control block (5) are arranged on the inner circumferential surface of the driving member (3); When the clamping portion (511) of the control block (5) rotates to the closing position (41) along with the driven member (4), the clamping portion (511) on the control block (5) forms a clamping fit with the clamping groove (31) of the driving member (3), and the two-way holding mechanism (6) is adapted to keep the clamping portion (511) of the control block (5) at the closing position (41) so that the driving member (3) and the driven member (4) rotate synchronously; When the clamping portion (511) of the control block (5) is rotated to the disengaging position (42) by an external force, the clamping portion (511) on the control block (5) disengages from the clamping groove (31) of the driving member (3), and the two-way holding mechanism (6) is adapted to keep the clamping portion (511) of the control block (5) at the disengaging position (42) so that the driving member (3) and the driven member (4) rotate relatively; The control block (5) includes a clamping block (51), a transmission block (52) and a rotating shaft (53); The rotating shaft (53) is rotatably connected to the driven member (4); The clamping block (51) includes a transfer portion and a clamping portion (511), the transfer portion of the clamping block (51) is connected to the rotating shaft (53) and is adapted to rotate synchronously with the rotating shaft (53), and the clamping portion (511) of the clamping block (51) is adapted to cooperate with the clamping groove (31) of the driving member (3); The transmission block (52) includes a transfer portion and a connecting portion, the transfer portion of the transmission block (52) is connected to the rotating shaft (53) and is adapted to drive the rotating shaft (53) to rotate, and the connecting portion of the transmission block (52) is connected to the two-way holding mechanism (6); When the clamping portion (511) of the clamping block (51) rotates to the closing position (41) along with the driven member (4), the clamping portion (511) of the clamping block (51) forms a clamping fit with the clamping groove (31) of the driving member (3), and the two-way holding mechanism (6) drives the clamping portion (511) of the clamping block (51) to keep the clamping fit with the clamping groove (31) of the driving member (3) through the transmission block (52) and the rotating shaft (53) so that the driving member (3) and the driven member (4) rotate synchronously; When the clamping portion (511) of the clamping block (51) is rotated to the disengagement position (42) by an external force, the clamping portion (511) on the clamping block (51) is disengaged from the clamping groove (31) of the active member (3), and the bidirectional holding mechanism (6) drives the clamping portion (511) of the clamping block (51) to be disengaged from the clamping groove (31) of the active member (3) via the transmission block (52) and the rotating shaft (53), so that the active member (3) and the driven member (4) can rotate relative to each other; The transmission block (52) is a pin.

2. A clutch mechanism for an electric operating mechanism of a circuit breaker according to claim 1, characterized in that: The bidirectional holding mechanism (6) comprises a tension spring (61) and a tension spring shaft (62); the tension spring shaft (62) is fixedly connected to the driven member (4); one end of the tension spring (61) is connected to the tension spring shaft (62); the other end of the tension spring (61) is connected to the connecting portion of the transmission block (52); and the transition portion of the transmission block (52) is located between the connecting portion of the tension spring shaft (62) and the transmission block (52).

3. A clutch mechanism for a circuit breaker electric operating mechanism as claimed in claim 2, characterized in that: A bracket (7) is fixedly arranged on the driven member (4), the tension spring shaft (62) is fixedly arranged on the bracket (7), and the upper end of the rotating shaft (53) passes through the bracket (7).

4. The clutch mechanism for an electric operating mechanism of a circuit breaker according to claim 1, characterized in that: It also comprises a casing (1), wherein a motor (8) and a gear transmission mechanism are arranged inside the casing (1), the active component (3) is a gear ring, and the gear transmission mechanism connects the motor (8) and the gear ring.

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