CN212695104U

CN212695104U - Circuit breaker

Info

Publication number: CN212695104U
Application number: CN202021584265.8U
Authority: CN
Inventors: 卢科军; 杨安; 顾斌斌; 朱俊; 郭绍军
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-12
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to a low-voltage apparatus field, concretely relates to circuit breaker, its operating device links to each other with the moving contact drive, and button mechanism links to each other with the operating device drive, and electric operating means cooperates with the operating device drive, and button mechanism and electric operating means all can make circuit breaker combined floodgate/separating brake through operating device; the electric operating device comprises a motor, a transmission gear set, a driving gear piece and a clutch gear piece, wherein the motor, the transmission gear set and the driving gear piece are sequentially connected in a driving manner, and the clutch gear piece is in driving fit with the driving gear piece 3 e; the operating mechanism comprises a transmission piece which is in driving fit with the clutch gear piece; the driving gear part drives the transmission part to rotate towards the closing direction through the clutch gear part, so that the circuit breaker is closed; the button mechanism is manually operated to drive the transmission piece to rotate towards the switching-on direction/the switching-off direction, so that the driving gear piece is always kept static when the circuit breaker is switched on/off; the utility model discloses circuit breaker, its manually operation and electric operation are independent each other, each other do not influence.

Description

Circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to circuit breaker.

Background

In the existing partial automatic reclosing miniature circuit breaker, a single chip of a control circuit board can control the position of a gear mechanism of an electric operating device and the rotation direction of a motor; there are some existing automatic reclosing miniature circuit breakers, in which a control circuit board is not provided with a single chip to control an electric operation device, and a motor always rotates in one direction to complete closing/opening operation.

The existing automatic reclosing miniature circuit breaker has the disadvantages that the manual operation closing function can not be realized normally when the automatic reclosing process meets the accident condition of sudden power failure or failure of an electric operation transmission mechanism, certain potential safety hazards are possessed, and troubles are caused to operators.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a circuit breaker, its manually operation and electric operation are independent each other, each other do not influence.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a circuit breaker comprises a shell 4, a button mechanism 1, an operating mechanism 2, an electric operating device 3, a moving contact 80 and a static contact 81, wherein the button mechanism, the operating mechanism 2, the moving contact 80 and the static contact 81 are respectively arranged in the shell 4; the operating mechanism 2 is in driving connection with the movable contact 80; the button mechanism 1 is connected with the operating mechanism 2 in a driving mode, the electric operating device 3 is matched with the operating mechanism 2 in a driving mode, and the button mechanism 1 and the electric operating device 3 can enable the circuit breaker to be switched on/off through the operating mechanism 2; the electric operating device 3 comprises a motor 3a, a transmission gear set and a driving gear piece 3e which are sequentially connected in a driving way, and a clutch gear piece which is matched with the driving gear piece 3e in a driving way; the operating mechanism 2 comprises a transmission piece 2a which is pivotally arranged on the shell 4 and is in driving connection with the button mechanism 1, and the transmission piece 2a is in driving fit with the clutch gear piece; the driving gear piece 3e drives the transmission piece 2a to rotate towards the closing direction through the clutch gear piece, so that the breaker is closed; the button mechanism 1 is manually operated to drive the transmission piece 2a to rotate towards the closing direction/opening direction, so that the driving gear piece 3e is always kept static when the circuit breaker is closed/opened.

Preferably, the clutch gear piece comprises a first output gear 3f and a second output gear 3g which are in driving fit, the first output gear 3f and the driving gear piece 3e are coaxially arranged and are in driving fit, the first output gear 3f can rotate relative to the driving gear piece 3e, and the second output gear 3g and the transmission piece 2a are coaxially linked.

Preferably, the first output gear 3f includes a first output gear driven part 3f-0 and a first sector-shaped tooth part 3f-1 which are coaxially stacked, the first output gear driven part 3f-0 includes a first avoidance space S1, and one end of the first avoidance space S1 is provided with a first closing driven surface 3 f-01;

the driving gear piece 3e comprises a middle driven gear 3e-0 meshed with the transmission gear set and a gear piece driving boss 3e-1 arranged on one side of the middle driven gear 3e-0, the gear piece driving boss 3e-1 is positioned in the first avoidance space S1 and is in driving fit with the first closing driven surface 3f-01, and a first gap is formed between the gear piece driving boss and the other end of the first avoidance space S1; the first avoidance space S1 is a fan-shaped space, and the fan-shaped angle of the first avoidance space S1 is larger than the fan-shaped angle of the first fan-shaped tooth portion 3 f-1.

Preferably, the first output gear driven part 3f-0 is of a fan-shaped structure, one side of the fan-shaped structure is a first avoidance space S1, and the first closing driven surface 3f-01 is arranged on one side of a rotation center of the first output gear driven part 3 f-0; the first output gear driven part 3f-0 and the first sector-shaped tooth part 3f-1 are an integral component.

Preferably, the second output gear 3g is a sector gear and is integrated with the transmission piece 2 a; the second output gear 3g comprises a second sector-shaped toothing, which is arranged on a radial side wall of the transmission piece 2 a.

Preferably, the gear piece driving boss 3e-1 is matched with the button mechanism 1 in a driving mode, and the button mechanism 1 drives the transmission piece 2a to rotate towards the opening direction, so that the breaker is opened.

Preferably, the clutch gear piece comprises a first output gear 3f coaxially linked with the driving gear piece 3e and a second output gear 3g coaxially arranged with the transmission piece 2a and in driving fit with the first output gear 3f, the second output gear 3g is also in driving fit with the first output gear 3f, and the transmission piece 2a can rotate relative to the second output gear 3 g.

Preferably, the second output gear 3g comprises a second output gear shaft part 3g-0 and a second output gear sector-shaped tooth part 3g-1, and the second output gear shaft part 3g-0 is coaxially arranged with the transmission piece 2 a; the first output gear 3f is a sector gear;

the transmission piece 2a comprises a second avoidance space 2a-1 arranged at one end in the radial direction, and one end of the second avoidance space 2a-1 is provided with a second closing driven surface 2 a-10; the second avoidance space 2a-1 is a fan-shaped space, and the fan-shaped angle of the second avoidance space is larger than that of the fan-shaped tooth part 3g-1 of the second output gear;

the second output gear sector tooth part 3g-1 is arranged in the second avoidance space 2a-1, is in driving fit with the second closing driven surface 2a-10 and is provided with a second gap with the other end of the second avoidance space 2 a-1; the button mechanism 1 is manually operated to drive the transmission piece 2a to rotate towards the closing direction/the opening direction, so that when the circuit breaker is closed/opened, the driving gear piece 3e, the first output gear 3f and the second output gear 3g are all kept static.

Preferably, the driving gear piece 3e comprises a middle driven gear 3e-0 and a gear piece driving boss 3e-1, the first output gear 3f is coaxially linked with the middle driven gear 3e-0, the middle driven gear 3e-0 is meshed with the transmission gear set, the gear piece driving boss 3e-1 is in driving fit with the button mechanism 1, and the button mechanism 1 drives the transmission piece 2a to rotate in the opening direction, so that the circuit breaker is opened.

Preferably, the button mechanism 1 is pressed/pulled to drive the transmission piece 2a to rotate towards the closing direction/opening direction, so that the circuit breaker is closed/opened; the electric operating device 3 is in driving fit with the button mechanism 1, and the button mechanism 1 drives the transmission piece 2a to rotate towards the opening direction, so that the breaker is opened; when the electric operation device 3 switches on/off the circuit breaker by the operation mechanism 2, the driving gear member 3e always rotates in the same direction.

Preferably, the button mechanism 1 comprises a button member 1a, a first connecting rod 1b, a connecting member 1c and a second connecting rod 1d which are sequentially connected in a driving manner, the connecting member 1c is connected with the transmission member 2a in a driving manner through the second connecting rod 1d, and the connecting member 1c is matched with a gear member driving boss 3e-1 of the electric operating device 3 in a driving manner.

Preferably, the operating mechanism 2 further includes a transmission link 2b, a lock catch 2c, a rotating plate 2d and a trip catch 2e, the rotating plate 2d is pivotally disposed on the housing 4, the lock catch 2c and the trip catch 2e are respectively pivotally disposed on the rotating plate 2d and are in lock catch fit, the transmission member 2a is drivingly connected with the lock catch 2c through the transmission link 2b, and the rotating plate 2d is drivingly connected with the movable contact 80.

Preferably, the operating mechanism 2 further includes a driving member return spring 2f, and the driving member return spring 2f applies an urging force to the driving member 2a to rotate the driving member 2a in the opening direction.

Preferably, the transmission gear set comprises a worm 3b, a first transmission gear 3c and a second transmission gear 3d which are sequentially meshed, the worm 3b is in driving connection with the motor 3a, and the second transmission gear 3d is meshed with the driving gear piece 3 e.

The utility model discloses circuit breaker, its 1 drive transmission spare 2a of button mechanism of manual operation rotate to combined floodgate direction/separating brake direction, when making circuit breaker combined floodgate/separating brake, driving gear spare 3e remains static throughout, thereby has realized the utility model discloses the manual operation of circuit breaker and electric operation's independence, the two each other does not influence, has guaranteed reliability, the stability of circuit breaker work, need not to overcome electric operating means 3's resistance during user's manual operation moreover, operates more laborsavingly, easily.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a circuit breaker of the present invention, showing at least the structure of the first embodiment of an electrically operated device;

fig. 2 is a schematic structural view of a first embodiment of the electric operation device of the present invention;

fig. 3 is a schematic structural view of a first embodiment of the drive gear member of the present invention;

fig. 4 is a schematic structural view of a first output gear of the present invention;

fig. 5 is a schematic view of a matching structure of the second output gear and the transmission member according to the present invention, wherein the second output gear is coaxially linked with the transmission member;

fig. 6 is a schematic view of the driving gear, the first output gear, the second output gear and the driving member of the present invention;

fig. 7 is a schematic structural diagram of a first embodiment of the circuit breaker of the present invention, the circuit breaker is in an open state;

fig. 8 is a schematic structural diagram of a first embodiment of the circuit breaker of the present invention, wherein the circuit breaker is in a closing state;

fig. 9 is a schematic structural diagram of the first embodiment of the circuit breaker of the present invention, in which the moving contact and the static contact are not closed yet when the circuit breaker is in the closing process;

fig. 10 is a schematic structural diagram of the circuit breaker in fig. 9 after closing is completed by the button mechanism according to the present invention;

fig. 11 is a schematic structural view of a second embodiment of the electric operating device of the present invention and a schematic structural view of the electric operating device cooperating with the button mechanism and the operating mechanism;

fig. 12 is a schematic diagram of the structure of the second output gear and the transmission member of the present invention, wherein the transmission member can rotate relative to the second output gear.

Detailed Description

The following description will further describe a specific embodiment of the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 12. The circuit breaker of the present invention is not limited to the description of the following embodiments.

The utility model discloses a circuit breaker, which comprises a shell 4, a button mechanism 1, an operating mechanism 2, an electric operating device 3, a moving contact 80 and a static contact 81, wherein the button mechanism, the operating mechanism 2, the moving contact 80 and the static contact 81 are respectively arranged in the shell 4; the operating mechanism 2 is in driving connection with the movable contact 80; the button mechanism 1 is connected with the operating mechanism 2 in a driving mode, the electric operating device 3 is matched with the operating mechanism 2 in a driving mode, and the button mechanism 1 and the electric operating device 3 can enable the circuit breaker to be switched on/off through the operating mechanism 2; the electric operating device 3 comprises a motor 3a, a transmission gear set and a driving gear piece 3e which are sequentially connected in a driving way, and a clutch gear piece which is matched with the driving gear piece 3e in a driving way; the operating mechanism 2 comprises a transmission piece 2a which is pivotally arranged on the shell 4 and is in driving connection with the button mechanism 1, and the transmission piece 2a is in driving fit with the clutch gear piece; the driving gear piece 3e drives the transmission piece 2a to rotate towards the closing direction through the clutch gear piece, so that the breaker is closed; the button mechanism 1 is manually operated to drive the transmission piece 2a to rotate towards the closing direction/opening direction, so that the driving gear piece 3e is always kept static when the circuit breaker is closed/opened. The utility model discloses circuit breaker, its 1 drive transmission spare 2a of button mechanism of manual operation rotate to combined floodgate direction/separating brake direction, when making circuit breaker combined floodgate/separating brake, driving gear spare 3e remains static throughout, thereby has realized the utility model discloses the manual operation of circuit breaker and electric operation's independence, the two each other does not influence, has guaranteed reliability, the stability of circuit breaker work, need not to overcome electric operating means 3's resistance during user's manual operation moreover, operates more laborsavingly, easily.

Preferably, the closing direction and the opening direction are opposite to each other.

Preferably, as shown in fig. 1 and 7-10, pressing/pulling the operating mechanism 1 drives the transmission member 2a to rotate in the closing/opening direction, so as to close/open the circuit breaker.

Preferably, as shown in fig. 1 and 7-10, the electric operating device 3 is in driving engagement with the button mechanism 1, and the electric operating device 3 drives the transmission member 2 to rotate in the opening direction through the button mechanism 1, so as to open the circuit breaker.

The circuit breaker of the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-10, a first embodiment of the circuit breaker of the present invention is shown.

As shown in fig. 1 and 7-10, the circuit breaker of the present invention includes a housing 4, and a button mechanism 1, an operating mechanism 2, an electric operating device 3, a moving contact 80 and a static contact 81 which are respectively disposed in the housing 4; the operating mechanism 2 is in driving connection with the moving contact 80 to drive the moving contact 80 and the static contact 81 to be closed/disconnected; the button mechanism 1 is connected with the operating mechanism 2 in a driving mode, the electric operating device 3 is matched with the operating mechanism 2 in a driving mode, and the button mechanism 1 and the electric operating device 3 can enable the circuit breaker to be switched on/off through the operating mechanism 2.

It should be pointed out that, according to the actual requirement, as shown in fig. 1, the circuit breaker of the present invention further includes a short circuit protection mechanism 5, an overload protection mechanism 7 and an arc extinguish chamber 6; the short-circuit protection mechanism 5 and the overload protection mechanism 7 are respectively matched with the operating mechanism 2 in a driving way, and when the breaker has short-circuit or overload faults, the breaker is driven to trip or open; the arc extinguish chamber 6 is matched with the moving contact 80 and the static contact 81 and is used for extinguishing electric arcs generated when the moving contact 80 and the static contact 81 are closed/disconnected. Of course, the circuit breaker of the present invention further includes an incoming terminal and an outgoing terminal, preferably disposed at both ends of the housing 4.

Preferably, as shown in fig. 1 and 7-10, the electric operating device 3 includes a motor 3a, a transmission gear set and a driving gear member 3e which are connected in a driving manner in sequence, and a clutch gear member which is in driving fit with the driving gear member 3 e; the operating mechanism 2 comprises a transmission piece 2a which is pivotally arranged on the shell 4 and is in driving connection with the button mechanism 1, and the transmission piece 2a is in driving fit with the clutch gear piece; the driving gear piece 3e drives the transmission piece 2a to rotate towards the closing direction through the clutch gear piece, so that the breaker is closed; the button mechanism 1 is manually operated to drive the transmission piece 2a to rotate towards the closing direction/opening direction, so that the driving gear piece 3e is always kept static when the circuit breaker is closed/opened. Further, the closing direction and the opening direction are opposite to each other.

Specifically, as shown in fig. 1, 2, and 6-8, the closing direction is clockwise, and the opening direction is counterclockwise.

Preferably, as shown in fig. 2 and 6, the clutch gear member includes a first output gear 3f and a second output gear 3g which are in driving engagement, the first output gear 3f is coaxially arranged with the driving gear member 3e and is in driving engagement, the first output gear 3f can rotate relative to the driving gear member 3e, and the second output gear 3g is coaxially linked with the transmission member 2 a. Further, as shown in fig. 4, the first output gear 3f includes a first output gear driven portion 3f-0 and a first sector-shaped tooth portion 3f-1 which are coaxially stacked, the first output gear driven portion 3f-0 includes a first avoidance space S1, and a first closing driven surface 3f-01 is arranged at one end of the first avoidance space S1; as shown in fig. 3, the driving gear member 3e includes an intermediate driven gear 3e-0 engaged with the transmission gear set and a gear member driving boss 3e-1 provided at one side of the intermediate driven gear 3 e-0; as shown in fig. 6, the gear member driving boss 3e-1 is located in the first avoidance space S1, is in driving fit with the first closing driven surface 3f-01, and is provided with a first gap with the other end of the first avoidance space S1; the first avoidance space S1 is a fan-shaped space, and the fan-shaped angle of the first avoidance space S1 is larger than the fan-shaped angle of the first fan-shaped tooth portion 3 f-1.

Preferably, as shown in fig. 4 and 6, the first output gear driven portion 3f-0 has a fan-shaped structure, one side of the fan-shaped structure is a first escape space S1, and the first closing driven surface 3f-01 is provided on the rotation center side of the first output gear driven portion 3 f-0. Specifically, as shown in fig. 4, the first output gear driven part 3f-0 includes two straight sides respectively located at two sides of a rotation center thereof, and one straight side is a first closing driven surface 3 f-01. Further, as shown in FIG. 4, the arc-shaped side edge of the first output gear passive portion 3f-0 and the arc-shaped portion of the first segmental tooth portion 3f-1 are disposed opposite to each other.

Preferably, as shown in fig. 4, the first output gear passive portion 3f-0 and the first sectoral tooth portion 3f-1 of the first output gear 3f are an integral member. Of course, the first output gear driven part 3f-0 and the first sector gear part 3f-1 can also be arranged as a split type and coaxial linkage assembly, but the number of the parts of the circuit breaker of the present invention can be increased, so that the first output gear 3f is preferably an integral member.

Preferably, as shown in fig. 5, the second output gear 3g is a sector gear and is integrated with the transmission member 2 a; the second output gear 3g comprises a second sector-shaped toothing, which is arranged on a radial side wall of the transmission piece 2 a. Specifically, as shown in fig. 5, the transmission member 2a includes a transmission member main body 2a-0 of a cylindrical structure, and the second segment-shaped tooth portion of the second output gear 3g is provided on a radial side wall of the transmission member main body 2 a-0. Further, the transmission member 2a further includes a first connection hole connected to the second link 1d of the button mechanism 1 and a second connection hole connected to the transmission link 2b, the second sector-shaped tooth portion and the second connection hole are respectively located at two radial ends of the transmission member body 2a-0, and the first connection hole is located between the second sector-shaped tooth portion and the second connection hole.

Preferably, as shown in fig. 2 and 8, the gear member driving boss 3e-1 is also in driving fit with the button mechanism 1, and the button mechanism 1 drives the transmission member 2a to rotate in the opening direction, so that the circuit breaker is opened. The electric operating device 3 indirectly drives the transmission piece 2a to rotate towards the opening direction through the button mechanism 1, so that the breaker is opened.

Specifically, as shown in fig. 1, 2 and 6-8, when the electric operating device 3 closes the circuit breaker through the operating mechanism 2, the driving gear 3e rotates and drives the boss 3e-1 to be in driving fit with the driven portion 3f-0 of the first output gear through the gear of the driving gear, so as to drive the first output gear 3f to rotate, the first sector-shaped tooth portion 3f-1 of the first output gear 3f is meshed with the second output gear 3g, and the second output gear 3g and the transmission member 2a are driven to coaxially link and rotate in the closing direction, so that the circuit breaker is closed. As shown in fig. 9, in the process that the electric operating device 3 closes the circuit breaker through the operating mechanism 2, if a power failure or a transmission failure occurs, the electric operating device 3 stops working, at this time, the first sector-shaped tooth portion 3f-1 of the first output gear 3f is meshed with the second output gear 3g, when the manual operating button mechanism 1 drives the transmission member 2a to continue to rotate in the closing direction, so that the circuit breaker completes closing, because the gear member driving boss 3e-1 is arranged in the first avoiding space S1 and the first gap exists, the transmission member 2a rotates and simultaneously drives the first output gear 3f to rotate relative to the driving gear member 3e, so that the circuit breaker can complete closing without overcoming the resistance of the electric operating device 3, and the state shown in fig. 10 is entered.

Preferably, as shown in fig. 1, is an embodiment of the operating mechanism 2: the operating mechanism 2 comprises a transmission part 2a, a transmission connecting rod 2b, a lock catch part 2c, a rotating plate 2d and a jump catch part 2e, the transmission part 2a and the rotating plate 2d are respectively pivoted on the shell 4, the lock catch part 2c and the jump catch part 2e are respectively pivoted on the rotating plate 2d and matched with each other in a lock catch manner, the transmission part 2a is in driving connection with the lock catch part 2c through the transmission connecting rod 2b, and the rotating plate 2d is in driving connection with the movable contact 80.

Preferably, as shown in fig. 12, the operating mechanism 2 further includes a driving member return spring 2f, and the driving member return spring 2f applies an acting force to the driving member 2a to rotate the driving member 2a in the opening direction, so as to accelerate the opening process of the circuit breaker and ensure that the driving member 2a can be opened and returned to the position. Further, as shown in fig. 12, the transmission member return spring 2f is a torsion spring, a spring ring of the torsion spring is sleeved on the rotating shaft of the transmission member 2a, one spring arm is in limit fit with the transmission member 2a, and the other spring arm is in limit fit with the housing 4.

Preferably, as shown in fig. 1, the transmission gear set includes a worm 3b, a first transmission gear 3c and a second transmission gear 3d which are meshed in sequence, the worm 3b is connected with the motor 3a in a driving manner, and the second transmission gear 3d is meshed with the driving gear piece 3 e.

Preferably, as shown in fig. 1, 2 and 6-8, pressing/pulling the button mechanism 1 drives the transmission member 2a to rotate in the closing/opening direction, so as to close/open the circuit breaker; the electric operating device 3 is in driving fit with the button mechanism 1, and drives the transmission piece 2a to rotate towards the opening direction through the button mechanism 1, so that the breaker is opened. Further, as shown in fig. 2 and 8, the gear member driving boss 3e-1 of the driving gear member 3e is in driving engagement with the coupling member 1c of the button mechanism 1.

Preferably, as shown in fig. 1, 2, and 6 to 8, when the electric operating device 3 operates the circuit breaker to close or open the circuit breaker by the operating mechanism 2, the driving gear member 3e is always rotated in the same direction. Specifically, the driving gear member 3e always rotates counterclockwise as viewed in fig. 1, 2, 6-8.

Preferably, as shown in fig. 1, is an embodiment of the button mechanism 1: the button mechanism 1 comprises a button piece 1a, a first connecting rod 1b, a connecting piece 1c and a second connecting rod 1d which are sequentially connected in a driving mode, the connecting piece 1c is connected with a transmission piece 2a in a driving mode through the second connecting rod 1d, and the connecting piece 1c is matched with a gear piece driving boss 3e-1 of the electric operating device 3 in a driving mode. Further, as shown in fig. 1, the button member 1a and the connecting member 1c are slidably provided on the housing 4.

Preferably, as shown in fig. 1, the circuit breaker of the present invention further includes a locking mechanism, one end of the locking mechanism is a driven end of the locking mechanism, protruding outside the housing 4, and the other end is a mating end of the locking mechanism, and is matched with the button member 1a or the first connecting rod 1 b.

One embodiment of the locking mechanism is: the circuit breaker of this embodiment is bayonet circuit breaker, inserts in the circuit breaker assembly line of installing the rack, and locking mechanical system and the casing cooperation of button mechanism 1 and circuit breaker assembly line realize the circuit breaker and install the locking behind the circuit breaker assembly line, with or the unblock, with or prevent that the circuit breaker from installing circuit breaker assembly line or extracting from circuit breaker assembly line under combined floodgate state, with or prevent that the circuit breaker from not installing combined floodgate when to circuit breaker assembly line, the utility model discloses a button mechanism 1 is suitable for and each locking mechanical system cooperation, and this all belongs to the utility model discloses a protection range.

Another embodiment of the locking mechanism is: the locking mechanism comprises a shell 4, a first connecting rod 1b or a connecting piece 204, wherein the shell is provided with a locking mechanism assembly position, the shell is provided with a locking mechanism assembly hole matched with the locking mechanism assembly hole, the locking mechanism assembly hole is correspondingly arranged on the breaker assembly position of the cabinet, after the breaker is installed in place, the locking mechanism assembly hole is formed in the locking mechanism assembly hole, the locking mechanism assembly hole is protruded out of the shell 4 and protruded into the cabinet locking hole, the breaker is prevented from being pulled out of the cabinet at will, a button piece 1a is pulled, and the button piece 1a or the first connecting rod 1b or the connecting piece 204 can drive the.

A third embodiment of the locking mechanism is: when the circuit breaker is not installed to the circuit breaker assembly position, the driven end of the locking mechanism is extruded to the interior of the retraction shell 4 by the cabinet wall, and the matching end of the locking mechanism is in limit fit with the button piece 1a or the first connecting rod 1b or the connecting piece 1c, so that the button piece 1a is prevented from moving towards the closing direction and cannot be closed when the circuit breaker is not installed to the circuit breaker assembly position; when the circuit breaker is installed in the circuit breaker assembly position, the driven end of the locking mechanism is not pressed by the shell of the circuit breaker assembly position to move towards the outside of the shell 4 any more, the matching end of the locking mechanism is enabled to be released from limit matching with the button piece 1a or the first connecting rod 1b or the connecting piece 1c, and the button piece 1a can move towards the closing direction and enables the circuit breaker to be closed through the operating mechanism 2.

It should be noted that the button member 1a, the first link 1b, and the connecting member 1c of the button mechanism 1 may also be designed as an integral component, thereby reducing the number of parts. In order to facilitate the convenience of the button mechanism 1 cooperating with other mechanisms and not to affect the cooperation with the electric mechanism 2, the button mechanism 1 of the present invention is preferably a combination of a button member 1a, a first connecting rod 1b, a connecting member 1c and a second connecting rod 1c, so as to facilitate the cooperation of the button mechanism 2 with the locking mechanism and the electric operation device 3 respectively.

The following description will be made of the switching on/off process of the circuit breaker of the present invention by the electric operation device 3 through the operation mechanism 2, with reference to the attached drawings:

as shown in fig. 1 and 7, the circuit breaker of the present invention is in the open state (the moving contact 80 and the static contact 81 are disconnected), the driving gear 3e of the electric operating device 3 is located at the initial position, and the first output gear 3f is not meshed with the second output gear 3 g; after the electric operating device 3 receives a closing signal, the driving gear piece 3e rotates and drives the first output gear 3f to rotate to be meshed with the second output gear 3g through the gear piece driving boss 3e-1, the driving gear piece 3e continues to rotate and drives the transmission piece 2a to rotate in the closing direction through the output gear, so that after the circuit breaker is closed, the driving gear piece 3e drives the first output gear 3f to be disengaged from the second output gear 3g and then stops, the driving gear piece 3e reaches the middle position, and the circuit breaker enters the state shown in fig. 8; as shown in fig. 8, the utility model discloses the circuit breaker is in the combined floodgate state (moving contact 80 and static contact 81 are closed), after electric operating means 3 received the separating brake signal, driving gear piece 3e rotated and removed through gear piece drive boss 3e-1 drive button mechanism 1's connecting piece 1c, connecting piece 1c rotated 2a to the separating brake direction through second connecting rod 1d drive, made the circuit breaker separating brake, driving gear piece 3e removed to initial position, the circuit breaker got into the state shown in fig. 1 and 7.

As shown in fig. 11 and 12, the circuit breaker of the present invention is a second embodiment.

As shown in fig. 11 and 12, the circuit breaker of the present embodiment is different from the first embodiment in that: the clutch gear piece comprises a first output gear 3f and a second output gear 3g, wherein the first output gear 3f is coaxially linked with the driving gear piece 3e, the second output gear 3g is coaxially arranged with the driving piece 2a and is in driving fit with the first output gear 3f, and the driving piece 2a can rotate relative to the second output gear 3 g.

Preferably, as shown in FIGS. 11 and 12, the second output gear 3g includes a second output gear shaft portion 3g-0 and a second output gear sector portion 3g-1, the second output gear shaft portion 3g-0 being disposed coaxially with the transmission member 2 a; the first output gear 3f is a sector gear; the transmission piece 2a comprises a second avoidance space 2a-1 arranged at one end in the radial direction, one end of the second avoidance space 2a-1 is provided with a second closing driven surface 2a-10, the second avoidance space 2a-1 is a fan-shaped space, and the fan-shaped angle of the second avoidance space 2a-1 is larger than that of the fan-shaped tooth part 3g-1 of the second output gear; the second output gear sector tooth part 3g-1 is arranged in the second avoidance space 2a-1, is in driving fit with the second closing driven surface 2a-10 and is provided with a second gap with the other end of the second avoidance space 2 a-1; the button mechanism 1 is manually operated to drive the transmission piece 2a to rotate towards the closing direction/the opening direction, so that when the circuit breaker is closed/opened, the driving gear piece 3e, the first output gear 3f and the second output gear 3g are all kept static.

Preferably, as shown in fig. 11 and 12, the driving gear member 3e includes an intermediate driven gear 3e-0 and a driving gear member 3e-1, the first output gear 3f is coaxially linked with the intermediate driven gear 3e-0, the intermediate driven gear 3e-0 is engaged with the transmission gear set, the gear member driving boss 3e-1 is in driving fit with the button mechanism 1, and the button mechanism 1 drives the transmission member 2a to rotate in the opening direction, so that the circuit breaker is opened. Specifically, as shown in fig. 11, the driving gear member 3e includes an intermediate driven gear 3e-0, a button driving gear and a first output gear 3f, which are sequentially stacked, and the button driving gear includes one driving gear, i.e., a gear driving boss 3 e-1.

Preferably, as shown in fig. 11, the driving gear piece 3e and the first output gear 3f are an integral member.

Specifically, in the process that the electric operating device 3 enables the circuit breaker to be switched on through the operating mechanism 2, the first output gear 3f is meshed with the second output gear 3g, the electric operating device 3 stops working due to power failure or transmission failure, the user manually operates the button mechanism 1 to drive the transmission part 2a to continue to rotate in the switching-on direction, so that the circuit breaker completes switching-on operation, due to the existence of the second avoiding space 2a-1 and the second gap, when the transmission part 2a rotates in the switching-on direction under the driving of the button mechanism 1, the second output gear 3g keeps static, and the user can complete the switching-on operation of the circuit breaker without overcoming the resistance of the electric operating device 3.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A circuit breaker comprises a shell (4), a button mechanism (1), an operating mechanism (2), an electric operating device (3), a moving contact (80) and a static contact (81), wherein the button mechanism, the operating mechanism and the electric operating device are respectively arranged in the shell (4); the operating mechanism (2) is in driving connection with the moving contact (80); the button mechanism (1) is connected with the operating mechanism (2) in a driving mode, the electric operating device (3) is matched with the operating mechanism (2) in a driving mode, and the button mechanism (1) and the electric operating device (3) can enable the circuit breaker to be switched on/off through the operating mechanism (2); the method is characterized in that:

the electric operating device (3) comprises a motor (3a), a transmission gear set and a driving gear piece (3e) which are sequentially connected in a driving way, and a clutch gear piece which is in driving fit with the driving gear piece (3 e); the operating mechanism (2) comprises a transmission piece (2a) which is arranged on the shell (4) in a pivoting mode and is connected with the button mechanism (1) in a driving mode, and the transmission piece (2a) is matched with the clutch gear piece in a driving mode; the driving gear piece (3e) drives the transmission piece (2a) to rotate towards the closing direction through the clutch gear piece, so that the breaker is closed; the button mechanism (1) is manually operated to drive the transmission piece (2a) to rotate towards the closing direction/opening direction, so that the driving gear piece (3e) is always kept static when the breaker is closed/opened.

2. The circuit breaker of claim 1, wherein: clutch gear spare includes first output gear (3f) of drive complex and second output gear (3g), and first output gear (3f) and drive gear spare (3e) coaxial setting and drive fit, first output gear (3f) can rotate for drive gear spare (3e), and second output gear (3g) and driving medium (2a) coaxial linkage.

3. The circuit breaker of claim 2, wherein: the first output gear (3f) comprises a first output gear driven part (3f-0) and a first fan-shaped tooth part (3f-1) which are coaxially arranged in a stacked mode, the first output gear driven part (3f-0) comprises a first avoiding space (S1), and a first closing driven surface (3f-01) is arranged at one end of the first avoiding space (S1);

the driving gear piece (3e) comprises a middle driven gear (3e-0) meshed with the transmission gear set and a gear piece driving boss (3e-1) arranged on one side of the middle driven gear (3e-0), the gear piece driving boss (3e-1) is positioned in the first avoidance space (S1), is in driving fit with the first closing driven surface (3f-01) and is provided with a first gap between the gear piece driving boss and the other end of the first avoidance space (S1); the first avoidance space (S1) is a fan-shaped space, and the fan-shaped angle of the first avoidance space (S1) is larger than that of the first fan-shaped tooth part (3 f-1).

4. The circuit breaker of claim 3, wherein: the first output gear driven part (3f-0) is of a fan-shaped structure, one side of the fan-shaped structure is a first avoidance space (S1), and the first closing driven surface (3f-01) is arranged on one side of the rotation center of the first output gear driven part (3 f-0); the first output gear driven part (3f-0) and the first sector-shaped tooth part (3f-1) are an integral component.

5. The circuit breaker of claim 2, wherein: the second output gear (3g) is a sector gear and is of an integrated structure with the transmission piece (2 a); the second output gear (3g) comprises a second sector-shaped toothing, which is arranged on a radial side wall of the transmission element (2 a).

6. The circuit breaker of claim 3, wherein: the gear piece driving boss (3e-1) is matched with the button mechanism (1) in a driving mode, and the transmission piece (2a) is driven by the button mechanism (1) to rotate towards the opening direction, so that the breaker is opened.

7. The circuit breaker of claim 1, wherein: clutch gear spare includes first output gear (3f) with the coaxial linkage of driving gear spare (3e) and with driving medium (2a) coaxial arrangement and drive complex second output gear (3g), second output gear (3g) still with first output gear (3f) drive complex, driving medium (2a) can rotate for second output gear (3 g).

8. The circuit breaker of claim 7, wherein: the second output gear (3g) comprises a second output gear shaft part (3g-0) and a second output gear sector tooth part (3g-1), and the second output gear shaft part (3g-0) is coaxially arranged with the transmission piece (2 a); the first output gear (3f) is a sector gear;

the transmission piece (2a) comprises a second avoidance space (2a-1) arranged at one end in the radial direction, and one end of the second avoidance space (2a-1) is provided with a second closing driven surface (2 a-10); the second avoidance space (2a-1) is a fan-shaped space, and the fan-shaped angle of the second avoidance space is larger than that of the fan-shaped tooth part (3g-1) of the second output gear;

the second output gear sector tooth part (3g-1) is arranged in the second avoidance space (2a-1), is in driving fit with the second closing driven surface (2a-10) and is provided with a second gap with the other end of the second avoidance space (2 a-1); the button mechanism (1) is manually operated to drive the transmission piece (2a) to rotate towards the closing direction/opening direction, so that when the circuit breaker is closed/opened, the driving gear piece (3e), the first output gear (3f) and the second output gear (3g) are kept static.

9. The circuit breaker of claim 7, wherein: the driving gear piece (3e) comprises a middle driven gear (3e-0) and a gear piece driving boss (3e-1), a first output gear (3f) is coaxially linked with the middle driven gear (3e-0), the middle driven gear (3e-0) is meshed with the transmission gear set, the gear piece driving boss (3e-1) is in driving fit with the button mechanism (1), and a transmission piece (2a) is driven by the button mechanism (1) to rotate in the opening direction, so that the circuit breaker is opened.

10. The circuit breaker according to claim 1 or 3 or 7, characterized in that: the button mechanism (1) is pressed/pulled to drive the transmission piece (2a) to rotate towards the closing direction/opening direction, so that the circuit breaker is closed/opened; the electric operating device (3) is in driving fit with the button mechanism (1), and the transmission piece (2a) is driven by the button mechanism (1) to rotate towards the opening direction, so that the breaker is opened; the electric operating device (3) enables the driving gear piece (3e) to always rotate towards the same direction when the circuit breaker is switched on/off through the operating mechanism (2).

11. The circuit breaker of claim 1, wherein: the button mechanism (1) comprises a button piece (1a), a first connecting rod (1b), a connecting piece (1c) and a second connecting rod (1d) which are sequentially connected in a driving mode, the connecting piece (1c) is connected with a transmission piece (2a) in a driving mode through the second connecting rod (1d), and the connecting piece (1c) is matched with a gear piece driving boss (3e-1) of the electric operating device (3) in a driving mode.

12. The circuit breaker of claim 1, wherein: operating device (2) still include drive link (2b), hasp spare (2c), rotor plate (2d) and jump fastener (2e), rotor plate (2d) pivot setting is on casing (4), hasp spare (2c) and jump fastener (2e) pivot respectively set up on rotor plate (2d) and hasp cooperation, driving medium (2a) link to each other with hasp spare (2c) drive through drive link (2b), rotor plate (2d) link to each other with moving contact (80) drive.

13. The circuit breaker according to claim 1 or 12, characterized in that: the operating mechanism (2) further comprises a transmission member return spring (2f), and the transmission member return spring (2f) applies acting force which enables the transmission member (2a) to rotate towards the opening direction to the transmission member (2 a).

14. The circuit breaker of claim 1, wherein: the transmission gear set comprises a worm (3b), a first transmission gear (3c) and a second transmission gear (3d) which are sequentially meshed, the worm (3b) is connected with the motor (3a) in a driving mode, and the second transmission gear (3d) is meshed with the driving gear piece (3 e).