CN214477278U - Transmission mechanism and circuit breaker - Google Patents

Abstract

The utility model provides a transmission mechanism and a breaker, which relates to the technical field of switching appliances, and comprises a driving piece, a deformation piece and an output piece for driving the breaker to open or close; the driving piece drives the output piece through the deformation piece; the switching force drives the deformation piece to deform so as to release the driving relation between the driving piece and the output piece. And then realize the purpose of taking off the drive end and the end to bit or the trouble end, at this moment, even if the driving piece continues to move, also can't exert power to output, effectively improved the flexibility and the intelligent degree that whole circuit breaker controlled. In addition, when an abnormal fault occurs, the controlled circuit breaker can be operated to generate switching force, so that the transmission relation is separated, and the controlled circuit breaker can work according to the original control function when the transmission mechanism has a fault.

Description

Transmission mechanism and circuit breaker

Technical Field

The utility model relates to a switching apparatus technical field particularly, relates to a drive mechanism and circuit breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and higher requirements on electricity safety are met. The breaker can be installed on a distribution line because of good breaking capacity. Meanwhile, the circuit can be connected, carried and disconnected under the condition of normal or abnormal circuit, and the circuit and the electrical equipment are effectively protected. With the deep research on the circuit breaker, the technology of opening and closing the circuit breaker is gradually matured.

The existing circuit breaker usually adopts rigid transmission when realizing opening and closing, so that other faults in a main circuit can not be avoided by controlling the circuit breaker to be disconnected when a driving end breaks down in the action process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drive mechanism and circuit breaker to the not enough among the above-mentioned prior art to solve current circuit breaker and lead to the problem that can't avoid other troubles in the main circuit through controlling the circuit breaker disconnection when the trouble because of rigid drive.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

one aspect of the embodiments of the present invention provides a transmission mechanism applied to a circuit breaker, including a driving member, a deformation member, and an output member for driving the circuit breaker to open or close; the driving piece drives the output piece through the deformation piece; the switching force drives the deformation piece to deform so as to release the driving relation between the driving piece and the output piece.

Optionally, one end of the deformation piece is arranged on the driving piece, and the other end of the deformation piece is abutted against the abutting part of the output piece, or one end of the deformation piece is arranged on the output piece, and the other end of the deformation piece is abutted against the abutting part of the driving piece; so that the driving piece drives the output piece through the deformation piece, and the switching force drives the deformation piece to deform so that the other end of the deformation piece is separated from the abutting part to remove the driving of the driving piece and the output piece.

Optionally, the deformation piece is an elastic piece, one end of the elastic piece is arranged on the driving piece or the output piece, and the other end of the elastic piece is used for generating a reset force towards the abutting portion when deforming.

Optionally, an inclined plane is arranged on the abutting portion, and the other end of the deformation member abuts against the inclined plane, so that the switching force provides an acting force which slides along the inclined plane and is far away from the abutting portion for the deformation member.

Optionally, the driving part is a driving wheel, the output part and the driving wheel are coaxially arranged, and the driving wheel drives the output part through the deformation part.

Optionally, the transmission mechanism further comprises a tripping piece, an action part is arranged on the driving piece, and one end of the tripping piece is located on a movement path of the action part, so that when the action part drives the tripping piece to move, the tripping piece drives the breaker to open the brake.

Optionally, the tripping element includes a tripping body and a resetting element connected to the tripping body, one end of the tripping body is located on a movement path of the actuating portion, and the resetting element is configured to provide a resetting force to the tripping body.

Optionally, the transmission mechanism further comprises a driving assembly, and the driving assembly is in driving connection with the driving member.

Optionally, the driving assembly includes a rotary driver and a transmission gear set, and the rotary driver is in driving connection with the driving member through the transmission gear set.

The utility model discloses on the other hand of embodiment provides a circuit breaker, including the casing that opens circuit, set up divide-shut brake mechanism and the above-mentioned any kind of drive mechanism in the casing that opens circuit, output spare among the drive mechanism is connected with the transmission of divide-shut brake mechanism.

The beneficial effects of the utility model include:

the utility model provides a transmission mechanism and a breaker, which comprises a driving piece, a deformation piece and an output piece for driving the breaker to open or close; the driving piece drives the output piece through the deformation piece; the switching force drives the deformation piece to deform so as to release the driving relation between the driving piece and the output piece. And then realize the purpose of taking off the drive end and the end to bit or the trouble end, at this moment, even if the driving piece continues to move, also can't exert power to output, effectively improved the flexibility and the intelligent degree that whole circuit breaker controlled. In addition, when an abnormal fault occurs, the controlled circuit breaker can be operated to generate switching force, so that the transmission relation is separated, and the controlled circuit breaker can work according to the original control function when the transmission mechanism has a fault.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a state of a transmission mechanism according to an embodiment of the present invention;

fig. 2 is a second schematic view illustrating a state of a transmission mechanism according to an embodiment of the present invention;

fig. 3 is an exploded view of a transmission mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 6 is a third schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 7 is a fourth schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 100-a drive member; 110-an action part; 200-a deformation piece; 300-an output; 310-an abutment; 311-inclined plane; 400-disengaging the fastener; 410-trip body; 420-a reset piece; 500-a rotary drive; 600-a drive gear set; 700-a housing; 710-a snap-in projection; 800-a circuit break housing; 810-a deflector rod; 820-square axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are only used for convenience of description and simplification of description, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In one aspect of the embodiment of the present invention, a transmission mechanism is provided for a circuit breaker, including a driving member 100, a deformation member 200, and an output member 300 for driving the circuit breaker to open or close; the driving member 100 drives the output member 300 through the deforming member 200; the switching force drives the deformation element 200 to deform, so as to release the driving relation between the driving element 100 and the output element 300.

For example, as shown in fig. 1, fig. 2 and fig. 3, the driving element 100 may serve as a driving element, and after the deformation element 200 establishes a transmission relationship between the driving element 100 and the output element 300, the driving element 100 may drive the output element 300 to move through the deformation element 200, so that the output element 300 outputs power to the switching-on/off mechanism of the circuit breaker connected to the output element 300, and further drives the switching-on/off mechanism to perform switching-on/off operation, so that the circuit breaker is correspondingly in a switching-on or switching-off state. When the circuit breaker divide-shut brake put in place or met the trouble, make the divide-shut brake mechanism transmission stop to lead to resistance grow when drive mechanism continues to transmit power to the divide-shut brake mechanism, in order to avoid drive mechanism or divide-shut brake mechanism impaired, therefore, can also make deformation piece 200 self take place deformation through the effect of switching force, and then produce the displacement and break away from the drive relation with driving piece 100 or output 300, thereby remove the drive relation or the transmission relation of driving piece 100 and output 300, and then realize carrying out the mesh of detaching drive end and arrival end or trouble end, at this moment, even if driving piece 100 continues the motion, also can't exert power to output 300, the flexibility and the intelligent degree that whole circuit breaker controlled have effectively been improved. In addition, because switching force need make deformation piece 200 take place deformation when the effect, consequently, use deformation piece 200 can also utilize self intensity to improve driven stability under normal transmission state, guarantee the reliability of controlling of circuit breaker divide-shut brake. When an abnormal fault occurs, the controlled circuit breaker can be operated to generate switching force, so that the transmission relation is removed, the controlled circuit breaker can work according to the original control function when the transmission mechanism breaks down, and the problem that other faults in the main circuit cannot be avoided by controlling the transmission mechanism and the controlled circuit breaker to be disconnected is avoided.

When the normal transmission state of the transmission mechanism is changed into the mutual-release non-transmission state, the force is required to be applied to the deformation member 200 to switch the force, and the purpose is achieved through the action of the switching force. The source of the switching force may be an external force applied from the outside of the mechanism, or an internal force inside the mechanism, which is described in detail with reference to fig. 1 to 2 as an example:

as shown in fig. 1, the state position of the deformation element 200 at this time may enable the driving element 100 to establish a transmission relationship with the output element 300, thereby achieving that the driving element 100 moves while the output element 300 is driven by the deformation element 200 to move and then output power outwards. When the breaker is switched in place or has a fault, the switching mechanism stops moving, the output part 300 is connected with the switching mechanism, so the switching mechanism also stops moving, at the moment, along with the continuous movement of the driving part 100, the acting force of the transmission positions of the deformation part 200 and the driving part 100 or the transmission positions of the deformation part 200 and the output part 300 is increased, after the acting force is increased to a certain value, the resistance (which can be the friction force between the deformation part 200 and the driving part 100 or the output part 300 or the force for restoring the deformation of the deformation part 200) can be overcome, so that the deformation part 200 is deformed and then displaced until the deformation part is separated from the transmission relation with the driving part 100 or the output part 300, and the driving relation or the transmission relation of the driving part 100 and the output part 300 is removed.

When the force is external force, an independent pushing device or pulling device can be arranged in a matched mode, and when needed, the deformation piece 200 is deformed and displaced in a mode of pushing or pulling the deformation piece 200.

Alternatively, for the purpose of achieving stable transmission of the driving member 100 and the output member 300 and requiring release of the transmission in a specific situation (when the circuit breaker is switched on and off or a fault is encountered), one end of the deformable member 200 may be disposed on one of the driver 100 and the output member 300, the other end of the deformable member 200 abuts against the abutting portion 310 of the other one of the driver 100 and the output member 300, in this way, the arrangement can form a basic location for the deformable element 200 through one end of the deformable element 200, so as to avoid unstable transmission of the driving element 100 and the output element 300 caused by large-amplitude movement thereof, and in addition, the deformable element 200 can move through the end abutted against the abutting part 310 through deformation, so as to release the driving of the driving element 100 and the output element 300 by disengaging from the abutting part 310 under specific conditions, and the specific arrangement mode thereof will be described in an exemplary manner as follows:

exemplary, one of them is: as shown in fig. 1, one end of the deformable element 200 is disposed on the driving element 100, and the other end of the deformable element 200 abuts against the abutting portion 310 disposed on the output element 300, so that the driving element 100 can drive the deformable element 200 to move synchronously under normal conditions, and then the deformable element 200 pushes the abutting portion 310 to drive the output element 300 to move. As shown in fig. 2, when the switching force acts, one end of the deformable member 200 abutting the abutting portion 310 moves due to the deformation and gradually separates from the abutting portion 310, so that the deformable member 200 and the output member 300 are released from the transmission relationship.

Another example is: set up the one end of deformation 200 in output 300, with the butt portion 310 butt that sets up on the other end of deformation 200 and driving piece 100, so, realize under the normality, driving piece 100 can promote deformation 200 motion through butt portion 310, and then drive output 300 motion by deformation 200, can correspond when realizing controlling the divide-shut brake of circuit breaker and satisfy the demand that is in under the specific condition at the circuit breaker. When the switching force acts, one end of the deformable element 200 abutting against the abutting part 310 moves due to the deformation and gradually separates from the abutting part 310, so that the deformable element 200 and the output element 300 are released from the transmission relation.

When one end of the deformable element 200 is disposed on the driving element 100 or the output element 300, the deformable element 200 may be fixedly disposed on the driving element 100 or the output element 300, or as shown in fig. 3, two limit posts are disposed on the driving element 100, and one end of the deformable element 200 is disposed between the two limit posts in an S-shaped manner, and one end of the deformable element 200 is detachably fixed.

Alternatively, the deformation element 200 may be an elastic element, that is, by setting one end of the elastic element in the driving element 100 or the output element 300, when the switching force drives the other end of the elastic element to deform, the elastic element can generate a reset acting force by its own characteristic, that is, a reset force in a direction close to the abutting portion 310, or a direction close to the driving element 100 (at this time, the abutting portion 310 is provided on the driving element 100) or the output element 300 (at this time, the abutting portion 310 is provided on the output element 300). Upon removal of the switching force, the resilient member may self-reset so that the driving relationship of the driving member 100 and the output member 300 can be reestablished.

For example, as shown in fig. 2, an inclined surface 311 may be disposed on the abutting portion 310, so that when the abutting force generated by the deformation element 200 when abutting against the inclined surface 311 is orthogonally resolved along the inclined surface 311, a first component force may be generated in a direction perpendicular to the inclined surface 311, and a second component force (the direction of the second component force should be toward a direction away from the abutting portion 310) is generated in a direction parallel to the inclined surface 311, where the first component force may be used to enable the transmission element to push the output element 300 to move, and the second component force may be balanced with the own deformation force, the friction force of the system, and the like (resistance force) when the mechanism needs normal transmission, and when the output element 300 stops moving, the abutting force may gradually increase along with a tendency that the driving element 100 continuously moves, at this time, the second component force also gradually increases until the deformation element 200 is driven to slide out along the inclined surface 311 after the resistance force is overcome, until the deformation element 200 completely separates from the abutting portion 310, thereby releasing the driving relation of the driver 100 and the output member 300. By providing the inclined surface 311 on the abutting portion 310, the second component force can be formed, so that the deformable member 200 can slide out smoothly when necessary when the opening and closing mechanism is in place or fails.

Alternatively, as shown in fig. 4, the driving element 100 is a sector driving wheel, the output element 300 is disposed coaxially with the sector driving wheel and can rotate with the housing 700, one end of the deformable element 200 is fixed on the side of the sector driving wheel, and meanwhile, the other end of the deformable element 200 abuts against the inclined surface 311 of the abutting portion 310 on the output element 300, and the driving wheel drives the output element 300 through the deformable element 200.

Optionally, as shown in fig. 3 and 7, the transmission mechanism further includes a tripping member 400, the driving member 100 is provided with an action portion 110, and one end of the tripping member 400 is located on a movement path of the action portion 110, so that when the circuit breaker needs to be opened, the action portion 110 arranged on the driving member 100 drives the tripping member 400 to move through the movement of the driving member 100, and the tripping member 400 drives the tripping mechanism to move to drive the circuit breaker to open the circuit breaker.

Optionally, as shown in fig. 3, the trip unit 400 includes a trip body 410 and a reset unit 420 connected to the trip body 410, one end of the trip body 410 is located on a movement path of the operating portion 110, the reset unit 420 can cooperate with the clamping protrusion 710 to store energy during a movement process of the trip body 410, and after the trip is completed, the reset unit 420 provides a reset force to the trip body 410 to reset the trip body 410, so as to prepare for a next operation.

Optionally, the transmission mechanism further comprises a driving assembly, and the driving assembly is in driving connection with the driving member 100.

The driving wheel, the deforming member 200 and the output shaft are installed in the installed relationship of fig. 3 and installed in the housing 700, and the rotary driver 500 is installed in the housing 700 to be in mesh-driven with the driving wheel through the transmission gear set 600 in the form of a worm gear. As shown in fig. 4, the circuit breaker is in an initial state, that is, the circuit breaker is in an open state, at this time, when the circuit breaker needs to be switched on, the rotary driver 500 (rotary motor) is started, the drive wheel is driven to rotate counterclockwise through the transmission gear set 600, to the position shown in fig. 6, in the rotating process, all transmission parts are in a normal movable state, so the resistance is small, the drive wheel can drive the output shaft to rotate through the deformation part 200, and then the opening and closing mechanism in the circuit breaker is driven to be switched on, the switching-on is in place, the rotary motor rotates reversely to drive the drive wheel and the deformation part 200 to rotate clockwise and reset (return to the initial state), and the rotary motor is stopped. As shown in fig. 7, when the brake is required to be opened, the rotating electrical machine can be started, and the driving wheel in the brake-opened state is driven by the transmission gear set 600 to continue to rotate clockwise, at this time, the actuating part 110 on the driving wheel acts on the trip body 410 rotatably installed on the housing 700, and the trip body 410 is continuously pushed to rotate, at this time, the reset piece 420 is limited by the clamping protrusion 710 on the shell 700, and continuously stores energy, then drives a deflector rod 810 in a tripping mechanism in the circuit breaker to move so as to start the tripping mechanism and drive a switching-on and switching-off mechanism to switch off, meanwhile, the output member 300 is reset to the initial state, at this time, the abutting portion 310 continues to abut against the deformable member 200, a transmission relationship between the driving wheel and the output shaft is established, the rotating motor continues to drive the driving wheel to rotate counterclockwise, the action portion 110 is separated from the trip body 410, and the trip body 410 is reset in the energy release state of the reset member 420 to prepare for the next action.

When the output shaft stops rotating in a limited manner due to sudden failure or in-place closing in the closing process, the driving wheel continues to rotate counterclockwise under the driving of the rotating motor, so that the acting force of the deformation part 200 and the abutting part 310 is increased, and the driving wheel is used as a switching force to drive the abutting end of the deformation part 200 and the abutting part 310 to move in a direction away from the output shaft along the inclined plane 311 of the abutting part 310 until the force can overcome the friction force, the restoring force of the deformation part 200 and the like, so that the driving relation between the driving wheel and the output shaft is released, as shown in fig. 5. When troubleshooting or needs to reset, the rotating motor can rotate to drive the driving wheel to rotate clockwise, so that after the deformation piece 200 passes over the abutting part 310, the deformation piece 200 is reset to the state of contact of the inclined surface 311 of the abutting part 310 under the action of the deformation force of the deformation piece 200, and the driving wheel and the output shaft recover the driving relation.

In order to further reduce the influence of the deformable member 200 on the output member 300 due to friction when the deformable member 200 is separated from the inclined surface 311 and the switching force is removed, the deformable member 200 is attached to the periphery of the output member 300 due to the restoring effect of the self-deforming force (as shown in fig. 2), a partition wall or a partition protrusion may be further provided on the outside, and the deformable member 200 can be attached to the partition wall or the partition protrusion after sliding out along the inclined surface 311.

The utility model discloses on the other hand of embodiment provides a circuit breaker, including the casing 800 that opens a circuit, set up in the divide-shut brake mechanism and any kind of drive mechanism of the aforesaid of the casing 800 that opens a circuit, output 300 among the drive mechanism is connected with the transmission of divide-shut brake mechanism.

For example, as shown in fig. 8, when the transmission mechanism is applied to a circuit breaker, the switching-on/off mechanism inside the circuit breaker housing 800 of the circuit breaker may be connected to the output member 300, and by providing a square shaft 820 on the output member 300, the square shaft 820 extends into the circuit breaker housing 700 to be connected to the switching-on/off mechanism, and a tripping mechanism inside the circuit breaker housing 700 may also be connected to the tripping device 400, and the tripping mechanism extends out of the driving lever 810 towards the transmission mechanism to cooperate with the tripping device 400 so as to implement the switching-on/off control function of the transmission mechanism on the circuit breaker. Because the transmission mechanism and the circuit breaking part are respectively arranged on the two shells 700, the modularized installation can be realized, and the convenience in the production, manufacture and transportation process and the flexibility in use are improved. The deformation of the deformation member 200 is utilized to drive the breaker to act when needed, and the driving relation is removed when not needed, so that the stability and the durability of the operation of the breaker are improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A transmission mechanism is applied to a circuit breaker and is characterized by comprising a driving piece, a deformation piece and an output piece for driving the circuit breaker to open or close; the driving piece drives the output piece through the deformation piece; the switching force drives the deformation piece to deform so as to remove the driving relation between the driving piece and the output piece.

2. The transmission mechanism according to claim 1, wherein one end of the deformation member is disposed on the driving member and the other end of the deformation member abuts against the abutting portion of the output member, or one end of the deformation member is disposed on the output member and the other end of the deformation member abuts against the abutting portion of the driving member; so that the driving piece drives the output piece through the deformation piece, and the switching force drives the deformation piece to deform so that the other end of the deformation piece is separated from the abutting part to release the driving relation between the driving piece and the output piece.

3. The transmission mechanism as claimed in claim 2, wherein the deformation member is an elastic member, one end of the elastic member is disposed on the driving member or the output member, and the other end of the elastic member is configured to generate a restoring force toward the abutting portion when deformed.

4. The transmission mechanism according to claim 2 or 3, wherein an inclined surface is provided on the abutting portion, and the other end of the deformable member abuts against the inclined surface, so that the switching force provides an acting force to the deformable member to slide along the inclined surface and to be away from the abutting portion.

5. A transmission mechanism as claimed in claim 2 or 3 wherein the drive member is a drive wheel and the output member is co-axially disposed with the drive wheel, the drive wheel driving the output member via the shape-changing member.

6. The transmission mechanism as claimed in claim 1, further comprising a release member, wherein the driving member is provided with an actuating portion, and one end of the release member is located on a moving path of the actuating portion, so that when the actuating portion drives the release member to move, the release member drives the circuit breaker to open.

7. The transmission mechanism according to claim 6, wherein the trip unit includes a trip body and a reset unit connected to the trip body, one end of the trip body is located on a movement path of the action unit, and the reset unit is configured to provide a reset force to the trip body.

8. The transmission mechanism as recited in claim 1, further comprising a drive assembly in driving communication with the drive member.

9. The transmission mechanism as recited in claim 5, wherein the drive assembly includes a rotary drive and a drive gear set, the rotary drive being drivingly connected to the drive member via the drive gear set.

10. A circuit breaker, comprising a circuit breaker housing, a switching mechanism disposed in the circuit breaker housing, and the transmission mechanism according to any one of claims 1 to 9, wherein an output member of the transmission mechanism is in transmission connection with the switching mechanism.

Images