CN114843152B

CN114843152B - Transmission mechanism and circuit breaker

Info

Publication number: CN114843152B
Application number: CN202110144430.0A
Authority: CN
Inventors: 乔嗣健; 庞文益; 杨娜
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2024-08-13
Anticipated expiration: 2041-02-02
Also published as: CN114843152A

Abstract

The invention provides a transmission mechanism and a circuit breaker, which relate to the technical field of switching appliances and comprise: the circuit breaker comprises a driving piece, a transmission piece, an elastic piece and an output piece, wherein the output piece is used for driving the circuit breaker to open or close; the transmission piece is positioned at the first station so that the driving piece drives the output piece through the transmission piece, and the switching force drives the transmission piece to move to the second station so as to release the driving of the driving piece and the output piece; one end of the elastic piece is connected with the transmission piece and is used for enabling the transmission piece to have a holding trend at the first station when the transmission piece is located at the first station and enabling the transmission piece to have a holding trend at the second station when the transmission piece is located at the second station. The switching of different stations is realized by utilizing the motion of the transmission piece, so that the circuit breaker is conveniently driven to act when needed, the driving relationship is relieved when not needed, and meanwhile, the stability of the transmission piece in different stations can be effectively improved by matching with the elastic action of the elastic piece.

Description

Transmission mechanism and circuit breaker

Technical Field

The invention relates to the technical field of switching appliances, in particular to a transmission mechanism and a circuit breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and higher requirements are placed on electricity safety. The breaker can be mounted on a distribution line because of its good breaking capacity. Meanwhile, the circuit can also be used for switching on, carrying and breaking current under normal or abnormal circuit conditions, so that effective protection is formed for circuits and electrical equipment. With the intensive research of circuit breakers, the technology of opening and closing the circuit breakers is gradually matured.

When the existing breaker encounters a fault in the switching-on and switching-off process, the driving end and the fault end are difficult to realize reliable transmission separation, so that the driving end and the fault end are easy to interfere with each other.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a transmission mechanism and a circuit breaker, which can ensure that a driving end and a fault end form reliable transmission separation and avoid the influence of mutual interference of the driving end and the fault end.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows:

In one aspect of an embodiment of the present invention, there is provided a transmission mechanism applied to a circuit breaker, including: the circuit breaker comprises a driving piece, a transmission piece, an elastic piece and an output piece, wherein the output piece is used for driving the circuit breaker to open or close; the transmission piece is positioned at the first station so that the driving piece drives the output piece through the transmission piece, and the switching force drives the transmission piece to move to the second station so as to release the driving relation between the driving piece and the output piece; one end of the elastic piece is connected with the transmission piece and is used for enabling the transmission piece to have a holding trend at the first station when the transmission piece is located at the first station and enabling the transmission piece to have a holding trend at the second station when the transmission piece is located at the second station.

Optionally, the first connecting part and the second connecting part arranged on the driving piece are respectively connected with the other end of the elastic piece and the transmission piece in a one-to-one correspondence manner, the abutting part arranged on the output piece is abutted with the transmission piece, or the first connecting part and the second connecting part arranged on the output piece are respectively connected with the other end of the elastic piece and the transmission piece in a one-to-one correspondence manner, and the abutting part arranged on the driving piece is abutted with the transmission piece; when the transmission piece is in the first station, the driving piece drives the output piece through the transmission piece, and when the switching force drives the transmission piece to switch to the second station, the transmission piece is separated from the abutting part so as to release the driving relation between the driving piece and the output piece.

Optionally, when the transmission piece is at the first station, one end of the elastic piece connected with the transmission piece is located at one side of an extension line where the first connecting portion and the second connecting portion are located, and when the transmission piece is at the second station, one end of the elastic piece connected with the transmission piece is located at the other side of the extension line where the first connecting portion and the second connecting portion are located.

Optionally, a limiting part is arranged on one of the driving part and the output part, and the limiting part is used for being abutted with the limiting part when the transmission part is in the second station.

Optionally, an inclined plane is disposed on the abutting portion, and the transmission member abuts against the inclined plane, so that the switching force is used for providing an acting force for the transmission member to slide along the inclined plane and away from the abutting portion.

Optionally, the device further comprises a housing, wherein a guide wall is arranged on the housing, and the guide wall is positioned on the motion path of the transmission piece and used for guiding the transmission piece to be switched from the first station to the second station.

Optionally, a reset wall is further disposed on the housing, and the reset wall is located on a movement path of the elastic member and is used for acting on the movement of the elastic member to drive the transmission member to switch from the second station to the first station.

Optionally, the circuit breaker further comprises a trip piece, wherein the driving piece is provided with an action part, and one end of the trip piece is positioned on a movement path of the action part, so that when the action part drives the trip piece to move, the trip piece drives the circuit breaker to break.

Optionally, the device further comprises a rotary driver and a transmission gear set, wherein the driving part is a driving wheel, the output part and the driving wheel are coaxially arranged, and the rotary driver is in transmission connection with the driving wheel through the transmission gear set.

In another aspect of the embodiments of the present invention, a circuit breaker is provided, including a circuit breaker housing, a switching mechanism disposed in the circuit breaker housing, and any one of the transmission mechanisms described above, where an output member in the transmission mechanism is in transmission connection with the switching mechanism.

The beneficial effects of the invention include:

The invention provides a transmission mechanism and a circuit breaker, comprising: the circuit breaker comprises a driving piece, a transmission piece, an elastic piece and an output piece, wherein the output piece is used for driving the circuit breaker to open or close; the driving part can be positioned at the first station to serve as a normal station, namely, the driving part can drive the output part to move through the driving part in a normal state. When a switching mechanism in a circuit breaker connected with an output piece is switched on or switched off in place or fails, the switching mechanism is limited, the output piece connected with the switching mechanism is stopped to move due to limitation, at the moment, the driving piece continuously moves, so that acting force between the driving piece and the driving piece or acting force between the driving piece and the transmission position of the output piece is increased, the switching force can be used as switching force after the acting force is increased to a certain value, the switching force at the moment can overcome resistance (can comprise resistance formed by a system, such as acting force of an elastic piece, friction force among components and the like) to further move the driving piece until the switching force moves from a first station to a second station (the influence of factors such as acting force of the elastic piece, friction force among the components and the like is considered, the size of the switching force can be properly changed in the moving process of the driving piece), at the moment, the driving piece and the output piece are gradually relieved from the driving relation along with the movement of the driving piece to the second station, and the switching force disappears. Meanwhile, in the motion process of the transmission member, the acting force of the elastic member on the transmission member is gradually changed, namely, the trend of keeping the first station of the transmission member is changed into the trend of keeping the second station of the transmission member, and under different actions of the elastic member, the transmission member positioned at the first station can reliably establish the transmission relation between the driving member and the output member, so that the stability and the reliability of transmission output are ensured; the transmission piece located at the second station can be kept at the second station, namely even if the driving piece continues to move at the moment, the transmission piece cannot act on limited parts such as the output piece, so that the stability and reliability of separation from the driving end to the action end of the circuit breaker are effectively improved when the circuit breaker is in place or fails in a switching-on/switching-off mode, and the corresponding transmission relation can be intelligently selected under different working conditions.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a driving mechanism in a first station according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a state of a transmission mechanism in a second station 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 driving member of a transmission mechanism according to an embodiment of the present invention;

FIG. 5 is a second schematic view of a driving mechanism in a first station according to an embodiment of the present invention;

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

FIG. 7 is a second schematic diagram of a transmission mechanism according to an embodiment of the present invention;

FIG. 8 is a third schematic diagram of a transmission mechanism according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a transmission mechanism according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 100-driving member; 110-a first connection; 111-extension lines; 120-a second connection; 130-an action part; 131-cambered surface; 140-an annular groove; 200-transmission parts; 300-elastic member; 400-output member; 410-abutment; 411-bevel; 500-a housing; 510—a rotary drive; 520-a drive gear set; 530-disengaging the fastener; 540-guide wall; 550-reset wall; 600-breaker housing; 610—a toggle lever; 620-square axis.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention 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 invention, as presented in the figures, 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, under the condition of no conflict, the features of the embodiments of the present invention may be combined with each other, and the combined embodiments still fall within the protection scope of the present invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following 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 merely for convenience of description of the present invention and for simplicity of description, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In one aspect of an embodiment of the present invention, there is provided a transmission mechanism applied to a circuit breaker, including: the driving part 100, the transmission part 200, the elastic part 300 and the output part 400 for driving the opening or closing of the circuit breaker; the transmission member 200 is located at the first station, so that the driving member 100 drives the output member 400 through the transmission member 200, and the switching force drives the transmission member 200 to move to the second station to release the driving relationship between the driving member 100 and the output member 400; one end of the elastic member 300 is connected to the transmission member 200, so that the transmission member 200 has a holding tendency at the first station when the transmission member 200 is located at the first station, and the transmission member 200 has a holding tendency at the second station when the transmission member 200 is located at the second station.

As shown in fig. 1, fig. 2 and fig. 3, the transmission mechanism may include a driving element 100, a driving element 200 and an output element 400, where the driving element 100 is used as a power source, the output element 400 is used as an output end for outputting power to the outside of the whole transmission mechanism, and the transmission relation between the driving element 100 and the output element 400 is established or released by using the driving element 200 under various working conditions, and meanwhile, by matching with the connection of the driving element 200 and the elastic element 300, the driving element 200 always has a tendency of maintaining the current working position, so that the stability of the transmission mechanism maintained in two states is effectively improved, and the problem that the two states are not switched in place to interfere with the mechanism, affect the mechanism and even cause the mechanism to be damaged easily is avoided. When the transmission member 200 is at the first station, at this time, the transmission member 200 may establish a transmission relationship between the driving member 100 and the output member 400, that is, at this time, the driving member 100 may drive the transmission member 200 to move, and the transmission member 200 may correspondingly drive the output member 400 to move, so that the moving output member 400 drives the breaker installed with the transmission mechanism to perform a switching-off or switching-on action, and the acting force of the elastic member 300 is matched, so that the transmission member 200 has a tendency of being kept at the current station; similarly, when the transmission member 200 is at the second station, the transmission member 200 releases the transmission relationship between the driving member 100 and the output member 400, that is, when the driving member 100 moves, the output member 400 cannot be driven to move synchronously with the transmission member 200, that is, when the driving member 100 cannot control the breaker connected with the output member 400 to perform the opening and closing actions, and the acting force of the elastic member 300 is combined, so that the transmission member 200 can have a tendency of being kept at the current station.

When the transmission member 200 is switched from the first station to the second station, the transmission member 200 can be driven to move by applying a switching force to the transmission member 200, and the elastic member 300 is overcome by the action of the switching force, so that the transmission member 200 has the acting force for maintaining the current station and other resistance of the system.

The switching force may be applied by an external force or an internal force of the transmission mechanism, for example, when the switching force is applied by the external force, the application direction and the application magnitude of the external force may be controlled so as to drive the transmission member 200 to move to realize transposition.

As shown in fig. 1 and 2, when the internal force of the transmission mechanism is applied, the transmission member 200 may be first located at the first station as a normal station, that is, the driving member 100 may drive the output member 400 to move through the transmission member 200 in a normal state. When the opening and closing mechanism in the circuit breaker connected with the output member 400 is opened or closed in place or fails, the opening and closing mechanism is limited, the output member 400 connected with the opening and closing mechanism is stopped moving due to limitation, at this time, the driving member 100 continuously moves, so that acting force between the driving member 200 and the driving member 100 or between the driving member 200 and the transmission position of the output member 400 is increased, after the acting force is increased to a certain value, the acting force can be used as a switching force, the switching force at this time can overcome resistance (which can include resistance formed by a system, such as acting force of the elastic member 300, friction force between components, and the like) to further move the driving member 200 until the switching force moves from the first station to the second station (considering the influence of factors such as acting force of the elastic member 300 and friction force between components, the size of the switching force can be properly changed in the moving process of the driving member 200), at this time, the driving member 100 and the output member 400 gradually release the transmission relation as the driving member 200 moves to the second station, and the switching force disappears.

Meanwhile, during the movement of the driving member 200, the acting force of the elastic member 300 on the driving member 200 is gradually changed, that is, the trend of keeping the first station of the driving member 200 is changed into the trend of keeping the second station of the driving member 200, and under the different actions of the elastic member 300, the driving member 200 positioned at the first station can reliably establish the driving relationship between the driving member 100 and the output member 400, so as to ensure the stability and reliability of the driving output; the transmission piece 200 positioned at the second station can be kept at the second station, namely even if the driving piece 100 continues to move at the moment, the transmission piece cannot act on limited parts such as the output piece 400, so that the stability and reliability of separation from the driving end to the action end of the circuit breaker are effectively improved when the circuit breaker is in place or fails, and the corresponding transmission relation can be intelligently selected under different working conditions.

Alternatively, the first connecting portion 110 and the second connecting portion 120 provided on one of the driving member 100 and the output member 400 are respectively connected with the other end of the elastic member 300 and the transmission member 200 in a one-to-one correspondence manner, and the abutting portion 410 provided on the other one of the driving member 100 and the output member 400 abuts against the transmission member 200, so that when the transmission member 200 is in the first station, the driving member 100 drives the output member 400 via the transmission member 200; when the switching force drives the transmission member 200 to switch to the second station, the transmission member 200 is separated from the abutment portion 410 to release the driving of the driving member 100 and the output member 400. There are two different embodiments according to the arrangement positions of the transmission member 200 and the elastic member 300, for example:

In one embodiment, as shown in fig. 1 and fig. 2, the transmission member 200 and the elastic member 300 may be disposed on the driving member 100, that is, the first connecting portion 110 and the second connecting portion 120 are disposed on the driving member 100, the transmission member 200 is rotatably disposed (in other embodiments, may be a sliding arrangement, and the principle is the same as that of the rotation arrangement, and only the movement form of the transmission member 200 is different) on the first connecting portion 110, one end of the elastic member 300 is connected to the other end of the transmission member 200 (the rotation connecting end of the non-transmission member 200 and the driving member 100), and the other end of the elastic member 300 may also be rotatably disposed on the second connecting portion 120, and the corresponding abutting portion 410 corresponding to the other end of the transmission member 200 is disposed on the output member 400. When the transmission member 200 is at the first station, the other end of the transmission member 200 may be correspondingly abutted to the abutment portion 410, and the elastic member 300 correspondingly applies a force to the transmission member 200 to enable the transmission member 200 to be kept at the first station, that is, the transmission member 200 may be abutted to the more stable abutment portion 410, at this time, when the opening and closing mechanism of the circuit breaker is normal, the driving member 100 may drive the transmission member 200 to enable the transmission member 200 to correspondingly move by pushing the abutment portion 410, so that the output member 400 is correspondingly moved, and stable output of the retention force is achieved, so as to drive the opening and closing mechanism to perform stable and reliable actions. Taking the switching force as the internal force of the mechanism as an example, when the output member 400 is limited to move in place due to the switching on/off mechanism or the fault, along with the continuous movement of the driving member 100, the pressure between the driving member 200 and the abutting portion 410 gradually increases, when the increased pressure is taken as the switching force and can overcome the resistance, the driving member 200 is driven to move, so that the driving member 200 is separated from the abutting portion 410, at this time, the driving member 100 and the output member 400 are released from the transmission relationship, and during the process of switching the working positions of the driving member 200, the elastic member 300 moves along with the driving member, and after the working force effect switching point is crossed, the driving member 200 generates a trend of keeping the working position to the second working position.

In another embodiment, both the transmission member 200 and the elastic member 300 may be disposed on the output member 400 (not shown), that is, the first connection portion 110 and the second connection portion 120 are disposed on the output member 400, the transmission member 200 is rotatably disposed (in other embodiments, may be slidably disposed, and the principle is the same as that of the rotation disposition, but only that the motion form of the transmission member 200 is different) on the first connection portion 110, one end of the elastic member 300 is connected to the other end of the transmission member 200 (the rotation connection end of the non-transmission member 200 and the output member 400), and the other end of the elastic member 300 may also be rotatably disposed on the second connection portion 120, and the corresponding abutment portion 410 corresponding to the other end of the transmission member 200 is disposed on the driving member 100. The movement form of the transmission member 200 in this embodiment is the same as that of the above embodiment, and thus will not be described again.

Alternatively, when the transmission member 200 is at the first station, one end of the elastic member 300 connected to the transmission member 200 is located at one side of the extension line 111 where the first connection portion 110 and the second connection portion 120 are located, and when the transmission member 200 is at the second station, one end of the elastic member 300 connected to the transmission member 200 is located at the other side of the extension line 111 where the first connection portion 110 and the second connection portion 120 are located.

As shown in fig. 1 and 2, since the transmission member 200 is rotatably connected to the first connecting portion 110, the elastic member 300 is rotatably connected to the second connecting portion 120, when the transmission member 200 is in the first station, the end of the elastic member 300 connected to the transmission member 200 is located at one side of the extension line 111 where the first connecting portion 110 and the second connecting portion 120 are located, the abutting portion 410 is also located at the side, and the force of the elastic member 300 on the transmission member 200 is directed to the second connecting portion 120, and at this time, the effect on the transmission member 200 is that the transmission member 200 has a clockwise force, and the transmission member 200 is limited by the output member 400 or the driving member 100 (for different setting positions of the foregoing embodiments), so that the transmission member 200 is kept in the first station so that the other end of the transmission member 200 and the abutting portion 410 can form a reliable and stable abutment to establish the transmission relationship between the driving member 100 and the output member 400. Under the action of the switching force, the transmission member 200 is driven to gradually move towards the direction close to the extension line 111 where the first connecting portion 110 and the second connecting portion 120 are located, at this time, the resistance of the elastic member 300 gradually increases, so that the driving member 100 and the output member 400 can be prevented from being released from transmission due to accidental stress of the transmission member 200, meanwhile, when the switching force is required, the switching force is enough to overcome the resistance in the process, one end, connected with the elastic member 300 and the transmission member 200, of the extension line 111 where the first connecting portion 110 and the second connecting portion 120 are located passes through the other side, where the extension line 111 where the first connecting portion 110 and the second connecting portion 120 are located, of the extension line 111 where the first connecting portion 110 and the second connecting portion 120 are located, at this time, the action effect of the elastic member 300 on the transmission member 200 is opposite, so that the transmission member 200 has a counterclockwise rotation force, the force can enable the transmission member 200 to continue to move, thereby reaching the second station, reliable separation of the driving member 100 and the output member 400 can be ensured, and the purpose of smoothly switching the first station to the second station can be achieved. The elastic member 300 may be a coil spring, an arc-shaped leaf spring as shown in fig. 1, or the like.

As shown in fig. 1, the first connecting portion 110 is located between the second connecting portion 120 and the connecting end of the elastic member 300 and the transmission member 200, and as shown in fig. 5, the connecting end of the elastic member 300 and the transmission member 200 may be located between the first connecting portion 110 and the second connecting portion 120.

Alternatively, corresponding to the two embodiments of the foregoing different setting positions, when the transmission member 200 and the elastic member 300 are both disposed on the driving member 100, a limiting portion may be disposed on the driving member 100, where the limiting portion may be disposed separately, or the second connecting portion 120 may be directly used as the limiting portion (as shown in fig. 2); when both the transmission member 200 and the elastic member 300 are disposed on the output member 400, a limiting portion may be disposed on the output member 400, and the limiting portion may be disposed separately or may be a limiting portion directly using the second connection portion 120. The setting position of the limiting part should satisfy that when the transmission member 200 is moved to the second station by the elastic member 300, no influence is formed on the movement of the transmission member 200, when the transmission member 200 has reached the second station, the transmission member 200 can be abutted to the limiting part, and then the limitation is formed on the transmission member 200, so that excessive movement of the transmission member 200 under the action of the acting force or the external force of the elastic member 300 is avoided, and the stability of the mechanism is improved.

Optionally, an inclined surface 411 is disposed on the abutting portion 410, and the transmission member 200 abuts against the inclined surface 411, so that the switching force provides a force to the transmission member 200 that slides along the inclined surface 411 and is away from the abutting portion 410.

As shown in fig. 2, an inclined surface 411 may be provided on the abutting portion 410, so that when the abutting force generated when the driving member 200 abuts against the inclined surface 411 is decomposed orthogonally along the inclined surface 411, a first component force may be generated in a direction perpendicular to the inclined surface 411, and a second component force (the direction of the second component force should be directed away from the abutting portion 410) may be generated in a direction parallel to the inclined surface 411, where the first component force may be used to enable the driving member 200 to push the output member 400 to move, where the second component force may be balanced with the acting force of the elastic member 300, the friction force of the system, and the like when the driving member 400 is at the first station and the mechanism needs to be normally driven, and when the output member 400 stops moving, the abutting force may gradually increase as the driving member 100 has a continuous movement trend, at this time, the second component force gradually increases until after the resistance is overcome, the driving member 200 is driven to move along the inclined surface 411 and toward a direction away from the abutting portion 410 (i.e., upward in fig. 2), until the driving member 200 is completely separated from the abutting portion 410, thereby releasing the driving relationship between the driving member 100 and the output member 400. By providing the inclined surface 411 at the abutting portion 410, a second force can be formed so as to realize automatic separation of the driving member 100 and the output member 400 by using the abutting force of the mechanism itself as the switching force when the opening/closing mechanism is in place or fails, thereby effectively improving the safety and reliability of the mechanism.

Optionally, the device further comprises a housing 500, and a guiding wall 540 is arranged on the housing 500, and the guiding wall 540 is located on the moving path of the transmission member 200 and is used for guiding the transmission member 200 to switch from the first station to the second station.

For example, as shown in fig. 6 and 7, a transmission mechanism may be disposed on the housing 500, for example, the driving member 100 and the output member 400 may be coaxially disposed, and the driving member 100 and the output member 400 may be relatively rotatable, where the driving member 100 and the output member 400 are rotatably disposed on the housing 500, and the transmission member 200 is rotatably disposed on the driving member 100, and meanwhile, a guiding wall 540 is disposed on the housing 500, where the guiding wall 540 may be disposed on a movement path of the transmission member 200, and when the transmission member 200 is in the first station, the driving member 100 drives the transmission member 200 to rotate, and when the opening and closing mechanism is about to be in the opening and closing position, the transmission member 200 is just contacted with the guiding wall 540, and the transmission member 200 is made to rotate along its rotation center under the limit of the guiding wall 540, thereby disengaging from the abutting portion 410, and may be that the guiding wall 540 guides the tail of the transmission member 200. The guide wall 540 may be a cylindrical protrusion, or may be an arc-shaped guide wall 540 as shown in fig. 7, which extends in a direction gradually approaching the driving member 100 in the rotation direction of the driving member 100 so as to start to gradually contact the driving member 200 when in place, and the arc-shaped surface guides the auxiliary driving member 200 to rotate along its rotation center, thereby smoothly separating from the abutment 410.

Optionally, a reset wall 550 is further disposed on the housing 500, where the reset wall 550 is located on a movement path of the elastic member 300, and is used to act on the elastic member 300 to move to drive the transmission member 200 to switch from the second station to the first station.

As shown in fig. 8 and 9, a reset wall 550 is further disposed on the housing 500, and the elastic member 300 may be an arc spring or an angular spring, that is, have a protrusion, when the transmission member 200 is in the first station, the protrusion of the elastic member 300 does not contact with the reset wall 550 during the movement of the driving member 100, when the transmission member 200 is switched from the first station to the second station, the elastic member 300 moves outwards along with the protrusion, so that the protrusion of the elastic member 300 also moves outwards, at this time, when the protrusion of the elastic member 300 moves outwards to the reset wall 550, under the guiding action of the reset wall 550, the protrusion is pushed to reset, and then the transmission member 200 is driven to switch from the second station to the first station, at this time, the whole mechanism can establish a transmission relationship, thereby, the cycle from establishment to release to establishment of the transmission relationship of the driving member 100 and the output member 400 is achieved, and the efficiency of the mechanism is improved, so that the mechanism can continuously and repeatedly implement the above functions.

Optionally, the circuit breaker further includes a trip member 530, an actuating portion 130 is disposed on the driving member 100, and one end of the trip member 530 is located on a moving path of the actuating portion 130, so that when the actuating portion 130 drives the trip member 530 to move, the trip member 530 drives the circuit breaker to break.

As shown in fig. 4, 6, 8 and 10, a trip member 530 may be further disposed on the housing 500, and a trip mechanism in the circuit breaker may be correspondingly connected to the trip member 530, where the trip member 530 may be rotatably disposed on the housing 500 and the trip member 530 is in a first position in a reset state through the deformation member, and at this time, the trip mechanism in the circuit breaker is also in a reset state. One end of the trip member 530 is located on the motion path of the motion portion 130 on the driving member 100, and drives the motion portion 130 to move in the motion process of the driving member 100, and then drives the trip member 530 to move to the second position when the motion portion 130 acts on the trip member 530, and further drives the trip mechanism in the circuit breaker to act so that the circuit breaker is in a breaking state, thereby realizing the breaking control of the transmission mechanism on the circuit breaker. The action part 130 may be a protrusion disposed on the driving element 100, the action part 130 may further include an annular groove 140 disposed on the driving element 100, as shown in fig. 4, where the annular groove 140 is disposed on one side of the driving element 100 away from the driving element 200, a protrusion is disposed in the annular groove 140, one end of the release member 530 is accommodated in the annular groove 140, and when the driving element 100 rotates, the annular groove 140 moves relative to the accommodating end of the release member 530, the release member 530 does not move, when the circuit breaker needs to be opened, the protrusion in the annular groove 140 can be made to rotate to the accommodating end of the release member 530, and the release member 530 rotates relative to the housing 500 by being driven by the protrusion, and also synchronously drives the deformation member to deform, so as to drive the release mechanism of the circuit breaker to move. The arrangement of the annular groove 140 can improve the stability of the arrangement of the release member 530 and the driving member 100, and the protrusion can accurately drive the release member 530 to act when rotating to a certain position. In order to further improve the smoothness of the action of the protrusion and the trip 530, the surface of one side of the protrusion may be provided with an arc surface 131 or an inclined surface 411, so that the trip 530 moves smoothly. After the protrusion acts on the release member 530, the protrusion is separated from the release member 530, and at this time, the release member 530 may be restored to the first position under the restoring action of the deformation member. Prepare for the next action.

After the disengaging member 530 is combined with the above-mentioned opening and closing function, as shown in fig. 7, when the transmission member 200 is at the first station, the transmission mechanism drives the breaker to close, after the breaker is closed in place, as shown in fig. 9, the transmission member 200 is switched to the second station, the transmission mechanism can stop moving, and when the breaker is required to open, the transmission mechanism can be started, as shown in fig. 10, so that the driving member 100 continues to move, and the opening of the breaker is realized by driving the disengaging member 530 to move. Thereafter, the transmission member 200 is switched back to the first station by the reset wall 550, and the transmission mechanism can continue to drive the circuit breaker to close when needed.

The rotation of the driving member 100 may be unidirectional rotation, so that not only the power requirement can be reduced, but also the polarity switching of the power is not required, the design difficulty is effectively reduced, and the design reliability is improved. In other embodiments, bi-directional rotation is also possible.

Alternatively, as shown in fig. 6, a rotary driver 510 is disposed in the housing 500, and is meshed with a transmission gear set 520 for transmission, the driving member 100 is a driving wheel, and the output member 400 is coaxially disposed with the driving wheel and can rotate relatively to the driving wheel. The rotary drive 510 is in driving connection with the drive wheels via a drive gear set 520.

In another aspect of the embodiments of the present invention, a circuit breaker is provided, including a circuit breaking housing 500, a switching mechanism disposed in the circuit breaking housing 500, and any one of the transmission mechanisms described above, wherein an output member 400 in the transmission mechanism is in transmission connection with the switching mechanism.

For example, as shown in fig. 11, when the transmission mechanism is applied to the circuit breaker, the opening and closing mechanism in the circuit breaker casing 500 of the circuit breaker can be connected with the output piece 400, the square shaft 620 is arranged on the output piece 400, the square shaft 620 stretches into the circuit breaker casing 600 to be connected with the opening and closing mechanism, and the tripping mechanism in the circuit breaker casing 600 can also be connected with the tripping piece 530, and the tripping mechanism stretches out the deflector rod 610 towards the transmission mechanism to be matched with the tripping piece 530 so as to realize the opening and closing control function of the transmission mechanism on the circuit breaker. Because drive mechanism and circuit breaking part set up respectively in two casings, consequently, can realize the modularization installation, improve the convenience in the production manufacturing transportation and the flexibility when using. The switching of different stations is realized by utilizing the movement of the transmission piece 200, so that the circuit breaker is conveniently driven to act when needed, the driving relationship is relieved when not needed, and meanwhile, the stability of the transmission piece 200 in different stations can be effectively improved by matching with the elastic action of the elastic piece 300.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission mechanism for a circuit breaker, comprising: the circuit breaker comprises a driving piece, a transmission piece, an elastic piece and an output piece, wherein the output piece is used for driving the circuit breaker to open or close; the transmission piece is positioned at a first station so that the driving piece drives the output piece through the transmission piece, and the switching force drives the transmission piece to move to a second station so as to release the driving relation between the driving piece and the output piece; one end of the elastic piece is connected with the transmission piece and is used for enabling the transmission piece to have a holding trend at a first station when the transmission piece is located at a first station and enabling the transmission piece to have a holding trend at a second station when the transmission piece is located at a second station;

The first connecting part and the second connecting part arranged on the driving piece are respectively connected with the other end of the elastic piece and the transmission piece in a one-to-one correspondence manner, the abutting part arranged on the output piece is abutted with the transmission piece, or the first connecting part and the second connecting part arranged on the output piece are respectively connected with the other end of the elastic piece and the transmission piece in a one-to-one correspondence manner, and the abutting part arranged on the driving piece is abutted with the transmission piece; when the transmission piece is in a first station, the driving piece drives the output piece through the transmission piece, and when the switching force drives the transmission piece to switch to a second station, the transmission piece is separated from the abutting part so as to release the driving relation between the driving piece and the output piece;

When the transmission piece is in the first station, one end of the elastic piece, which is connected with the transmission piece, is positioned at one side of an extension line where the first connecting part and the second connecting part are positioned, and when the transmission piece is in the second station, one end of the elastic piece, which is connected with the transmission piece, is positioned at the other side of the extension line where the first connecting part and the second connecting part are positioned;

a limiting part is arranged on one of the driving part and the output part and is used for being abutted with the limiting part when the transmission part is in the second station;

the abutting portion is provided with an inclined surface, and the transmission piece abuts against the inclined surface and is used for enabling the switching force to provide acting force for the transmission piece, wherein the acting force slides along the inclined surface and is far away from the abutting portion.

2. The transmission mechanism of claim 1, further comprising a housing having a guide wall disposed thereon, the guide wall being positioned in a path of movement of the transmission member for guiding the transmission member from the first station to the second station.

3. A drive mechanism as claimed in claim 2, wherein a return wall is also provided on the housing, the return wall being located in the path of movement of the resilient member for acting on the movement of the resilient member to drive the drive member from the second station to the first station.

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

5. The transmission mechanism of claim 1, further comprising a rotary drive and a drive gear set, wherein the drive member is a drive wheel, wherein the output member is coaxially disposed with the drive wheel, and wherein the rotary drive is drivingly coupled to the drive wheel via the drive gear set.

6. A circuit breaker comprising a circuit breaking housing, a switching mechanism disposed in the circuit breaking housing, and a transmission mechanism as claimed in any one of claims 1 to 5, wherein an output member in the transmission mechanism is in driving connection with the switching mechanism.