CN111599649A - Opening actuating mechanism, circuit breaker and opening method - Google Patents

Abstract

The invention discloses a brake separating action mechanism, a circuit breaker and a brake separating method, wherein the brake separating action mechanism is provided with a first elastic piece, a first transmission piece and a second transmission piece which rotate around the same main shaft, the first transmission piece and the second transmission piece are respectively provided with a first abutting surface and a second abutting surface, the elastic force of the first elastic piece acts on the second transmission piece, when the first abutting surface and the second abutting surface abut against each other and a first electric contact is contacted with a second electric contact in the circuit breaker, the first transmission piece and the second transmission piece keep relatively static, and when the first abutting surface and the second abutting surface are converted from the abutting state to the disengaging state, the second transmission piece rotates to separate the first electric contact from the second electric contact, so that brake separating is realized. The opening actuating mechanism provided by the invention has the advantages of less parts and simple assembly.

Description

Opening actuating mechanism, circuit breaker and opening method

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a switching-off action mechanism, a circuit breaker and a switching-off method.

Background

The circuit breaker is a common circuit protection device, generally speaking, the circuit breaker has two states of opening and closing, when the circuit breaker is in the closing state, the circuit normally operates, and under the condition that faults such as overload and short circuit occur or the circuit needs to be overhauled, the circuit breaker needs to perform opening action to cut off the circuit, and in the prior art, the circuit breaker opening action mechanism has many parts and is complex to assemble.

Thus, there is a need for improvements and enhancements in the art.

Disclosure of Invention

The invention provides a tripping operation mechanism, a circuit breaker and a tripping method, aiming at solving the technical problems of more parts and complex assembly of the tripping operation mechanism of the circuit breaker in the prior art.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides an opening actuating mechanism, is applied to in the circuit breaker, opening actuating mechanism includes:

the first transmission piece can rotate around the main shaft, and a first abutting surface is arranged on the first transmission piece;

a transmission part is arranged at one end of the second transmission part and provided with a second abutting surface, a first electric contact is arranged at the other end of the second transmission part, and the second transmission part can rotate around the main shaft;

the first elastic piece, the elasticity of first elastic piece acts on the second driving medium, just the elasticity direction of first elastic piece is for keeping away from the direction of the second electrical contact in the circuit breaker, works as first butt face with second butt face butt just first electrical contact with when the second electrical contact in the circuit breaker contacts, first driving medium and the second driving medium keeps relative static, works as first butt face with when the second butt face turns into the disengagement state by the butt state, the second driving medium rotates so that first electrical contact with the separation of second electrical contact.

The brake separating action mechanism comprises an inner driving piece, wherein the inner driving piece is used for driving the first driving piece to rotate, so that the first abutting surface and the second abutting surface are converted into a separated state from an abutting state.

The opening actuating mechanism comprises an operating piece, and the transmission part is connected with the operating piece.

The brake separating action mechanism is characterized in that the transmission part is connected with the operation part through a connecting rod, and two ends of the connecting rod are respectively connected with the transmission part and the operation part in a rotating mode.

The brake separating action mechanism is characterized in that after the first abutting surface and the second abutting surface are converted into a separated state from an abutting state, the transmission part moves along with the second transmission piece so that the operating piece reaches a brake separating position.

The opening actuating mechanism, wherein, the opening actuating mechanism further comprises:

and the elastic force of the second elastic piece acts on the operating piece, and the second elastic piece is used for assisting the operating piece to reach the brake separating position after the first abutting surface and the second abutting surface are converted into a disengaging state from an abutting state.

The opening actuating mechanism, wherein, the opening actuating mechanism further comprises:

and a third elastic member, wherein after the first abutting surface and the second abutting surface are switched from the abutting state to the separated state, the elastic force of the third elastic member acts on the first transmission member to enable the first abutting surface and the second abutting surface to abut again.

The opening action mechanism, wherein the second transmission part comprises:

the transmission part is arranged at one end of the connecting rod, and a first stop surface is arranged on the connecting rod;

the moving contact is rotationally connected with the connecting rod, the first electric contact is arranged on the moving contact, and a second stop surface matched with the first stop surface is arranged on the moving contact;

the elastic force of the first elastic piece acts on the movable contact.

A circuit breaker, wherein the circuit breaker comprises the opening action mechanism.

An opening method based on the opening action mechanism, wherein the opening method comprises the following steps:

the first transmission piece rotates to enable the first abutting surface and the second abutting surface to be converted into a separated state from an abutting state;

the second transmission piece rotates under the action of the elastic force of the first elastic piece, so that the first electric contact is separated from the second electric contact.

Has the advantages that: compared with the prior art, the invention provides a brake separating action mechanism, a circuit breaker and a brake separating method, wherein the brake separating action mechanism is applied to the circuit breaker, through arranging a first elastic piece, a first transmission piece and a second transmission piece which rotate around the same main shaft, one end of the second transmission piece is provided with a transmission part, the other end of the second transmission piece is provided with a first electric contact, the elastic force of the first elastic piece acts on the second transmission piece, the direction of the elastic force is far away from a second electric contact in the circuit breaker, when the first abutting surface and the second abutting surface abut against each other and the first electric contact and the second electric contact are contacted, the first transmission piece and the second transmission piece are kept relatively static, so that the first electric contact and the second electric contact can be kept in contact, the circuit breaker is in a closing state, and when the abutting state of the first abutting surface and the second abutting surface is converted into a separating state, the first elastic piece can drive one end, provided with the first electric contact, of the second transmission piece to rotate towards one end, far away from the second electric contact, of the second transmission piece due to the loss of the acting force between the first abutting surface and the second abutting surface, so that the first electric contact is separated from the second electric contact, a circuit is cut off, and the opening is realized.

Drawings

Fig. 1 is a first schematic structural diagram of an overall closing state of an embodiment of a switching-off actuating mechanism provided in the present invention;

fig. 2 is a schematic overall structural diagram of a closing state of an embodiment of a switching-off actuating mechanism provided in the present invention;

fig. 3 is a first schematic structural diagram illustrating an overall structure of a first abutting surface and a second abutting surface of an embodiment of a brake-separating operating mechanism according to the present invention when the first abutting surface and the second abutting surface are converted from an abutting state to a disengaged state;

fig. 4 is a second schematic structural diagram of the first abutting surface and the second abutting surface of the embodiment of the opening/closing actuating mechanism according to the present invention, when the abutting state is converted into the disengaged state;

FIG. 5 is a schematic view of an inner driving member of an embodiment of a switching mechanism according to the present invention;

FIG. 6 is a first schematic view of an embodiment of a switching mechanism according to the present invention, wherein the internal driving member drives the switching mechanism;

FIG. 7 is a second schematic view of an embodiment of a switching mechanism according to the present invention, wherein the internal driving member drives the switching mechanism;

FIG. 8 is a first schematic structural diagram illustrating an opening state of an embodiment of the opening actuating mechanism according to the present invention;

FIG. 9 is a second schematic view of the overall structure of the opening state of the opening actuating mechanism according to an embodiment of the present invention;

FIG. 10 is a schematic view of a connection structure between a transmission part and an operation part of an embodiment of a switching mechanism according to the present invention;

FIG. 11 is a schematic view illustrating the second elastic member according to an embodiment of the present invention;

FIG. 12 is a schematic diagram illustrating the second elastic member according to an embodiment of the opening/closing actuating mechanism of the present invention;

fig. 13 is a schematic functional diagram of a third elastic member in an embodiment of a switching mechanism according to the present invention.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In one embodiment of the present invention, there is provided a switching-off actuating mechanism, which is applied to a circuit breaker, as shown in fig. 1-2, and includes: the opening and closing device comprises a main shaft 10 and a first transmission member 11, wherein the first transmission member 11 can rotate around the main shaft 10, the opening and closing action mechanism further comprises a second transmission member 12, one end of the second transmission member 12 is provided with a transmission part 13, the transmission part 13 can be integrally formed with the second transmission member 12 or fixedly connected by riveting, threaded connection and the like after being respectively formed, the first transmission member 11 is provided with a first abutting surface 110, the transmission part 13 is provided with a second abutting surface 120 (as shown in fig. 2, fig. 2 is a drawing in which the part of the second transmission member 12 except the transmission part 13 in fig. 1 is hidden), the other end of the second transmission member 12 is provided with a first electrical contact 121, and the first electrical contact 121 is matched with a second electrical contact 122 arranged in a circuit breaker where the opening and closing action mechanism is located to cut off and connect a circuit, specifically, when the first electrical contact 121 contacts the second electrical contact 122, the circuit is closed, and the circuit breaker is in a closed state, and when the first electrical contact 121 is separated from the second electrical contact 122, the circuit is cut off, and the circuit breaker is in an open state.

The second transmission member may rotate around the spindle 10, the opening actuating mechanism further includes a first elastic member 14, the first elastic member 14 may be a spring, an elastic sheet, or the like, an elastic force of the first elastic member 14 acts on the second transmission member 12, and an elastic force direction of the first elastic member 14 is a direction away from the second electrical contact 122, when the first abutting surface 110 abuts against the second abutting surface 120 and the first electrical contact 121 contacts the second electrical contact 122, due to an acting force between the first abutting surface 110 and the second abutting surface 120, an acting force between the first electrical contact 121 and the second electrical contact 122, and an elastic force of the first elastic member 14, the opening actuating mechanism is balanced in force, and the first transmission member 11 and the second transmission member 12 are kept relatively stationary. And the position of the second electrical contact 122 is fixed, the first electrical contact 121 and the second electrical contact 122 can maintain a contact state, that is, the circuit breaker maintains a closed state. When the first abutting surface 110 and the second abutting surface 120 are turned from the abutting state to the disengaging state (as shown in fig. 3-4, fig. 4 is a diagram of fig. 3 in which the portion of the second transmission member 12 excluding the transmission portion 13 is hidden), as the acting force between the first abutting surface 110 and the second abutting surface 120 disappears, the force balance between the first transmission member 11 and the second transmission member 12 is broken, the second transmission member 12 rotates under the elastic force of the first elastic member 14, so that the first electrical contact 121 and the second electrical contact 122 are separated, specifically, the elastic force acting point of the first elastic member 14 is between the first electrical contact 121 and the main shaft 10, and when the second transmission member 12 rotates around the main shaft 10, the end provided with the first electrical contact 121 moves away from the second electrical contact 122, the first electrical contact 121 and the second electrical contact 122 are separated, the circuit is cut off, and the opening of the circuit breaker is realized. The first electrical contact 121 and the second electrical contact 122 may be separated by driving the first transmission member 11 to rotate by an external force, that is, the first transmission member 11 rotates when receiving the external force to separate the first electrical contact 121 and the second electrical contact 122.

As can be seen from the above description, the opening operation mechanism provided by the present invention can realize opening by a small number of parts (the main shaft, the first elastic member, the first transmission member, and the second transmission member), and has only one elastic member, so that the assembly is simple.

In a possible implementation manner, in order to make the contact between the first electrical contact 121 and the second electrical contact 122 more stable, as shown in fig. 1, the second transmission member 12 includes a connecting rod 123 and a movable contact 124, the movable contact 124 is rotatably connected to the connecting rod 123, specifically, a rotating shaft 1230 is disposed on the connecting rod 123, the movable contact 124 is rotatably connected to the connecting rod 123 through the rotating shaft 1230, the transmission portion 13 is disposed at one end of the connecting rod 123, the first electrical contact 121 is disposed on the movable contact 124, a first stop surface 1231 is disposed on the connecting rod 123, a second stop surface 1241 matched with the first stop surface 1231 is disposed on the movable contact 124, the elastic force of the first elastic member 14 acts on the movable contact 124, and the rotating shaft 1230 is disposed between the elastic force acting point of the first elastic member 14 and the first electrical contact 121, in this way, when the first electrical contact 121 and the second electrical contact 122 are in contact with each other, under the elastic force of the first elastic element 14, the end of the movable contact 124, where the first electrical contact 121 is disposed, tends to rotate in the direction of the second electrical contact 122, so that the first electrical contact 121 and the second electrical contact 122 are in more reliable contact. After the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaging state, the connecting rod 123 rotates under the elastic force of the first elastic member 14 and the action force of the second electrical contact 122 on the first electrical contact 121, and simultaneously the movable contact 124 rotates around the rotating shaft 1230 under the elastic force of the first elastic member 14, when the movable contact 124 rotates around the rotating shaft 1230 for a certain angle, the first stop surface 1231 contacts with the second stop surface 1241, so that the movable contact 124 can not rotate around the rotating shaft 1230 any more, and at this time, the connecting rod 123 and the movable contact 124 integrally rotate (as shown in fig. 3), so as to separate the first electrical contact 121 and the second electrical contact 122.

In a possible implementation manner, the opening actuating mechanism comprises an internal driving part, so that the opening actuating mechanism supports automatic opening of the circuit breaker, specifically, automatic opening of the circuit breaker means that the opening is realized by means of the action of the circuit breaker without manually operating a component of the circuit breaker. As shown in fig. 5, the opening actuating mechanism further includes an internal driving element 15, where the internal driving element 15 is configured to drive the first transmission element 11 to rotate, so that the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaging state, and the internal driving element 15 drives the first transmission element 11 to rotate when a fault such as a short circuit or an overload occurs in a circuit, or, in other situations requiring opening, the circuit breaker receives an external command and then controls the internal driving element 15 to drive the first transmission element 11 to rotate.

In a possible implementation manner, the internal driving member 15 includes a power member 151 and a rotating member 152, when the first transmission member 11 is driven to rotate, the power member 151 provides power to enable the rotating member 152 to collide with the first transmission member 11 to rotate, a direction of a collision force of the rotating member 152 on the first transmission member 11 is a direction away from the second electrical contact 122 to enable the first abutting surface 110 and the second abutting surface 120 to be separated, specifically, the power member 151 may be an electromagnetic system including a coil winding, an electromagnetic torque is generated after the coil winding is conducted to provide a suction force for adsorbing the rotating member 152, a return elastic member is disposed on the rotating member 152, and when the opening is required, the power member 151 generates an electromagnetic torque greater than a counter torque of the armature return elastic member, so that two ends of the rotating member 152 rotate in a direction shown by an arrow in fig. 5 to collide with the first transmission member 152 11. After the rotating part 152 drives the opening actuating mechanism to complete opening, the power part 151 no longer provides power, and the rotating part 152 resets under the action of the resetting elastic part, so that the rotating part 152 can realize the next opening driving. Of course, the power element 151 may be another element capable of driving the rotation element 152 to rotate.

In a possible implementation manner, a first collision portion 152a and a second collision portion 152b are disposed on the rotating member 152, an included angle is formed between the first collision portion 152a and the second collision portion 152b, a first protrusion 11a and a second protrusion 11b are disposed on the first transmission member 11, the first protrusion 11a and the first collision portion 152a are disposed correspondingly, the second protrusion 11b and the second collision portion 152b are disposed correspondingly, when the first transmission member 11 is driven to rotate to realize opening, the first collision portion 152a first contacts with the first protrusion 11a (as shown in fig. 6) to realize a first collision on the first transmission member 11, the first transmission member 11 starts to rotate under the action of a collision force, the first abutting surface 110 and the second abutting surface 120 are converted from an abutting state to a disengaging state, and a distance from the first collision portion 152a to a rotating shaft of the rotating member 152 is smaller than a distance from the second collision portion 152b to the second collision portion 152b The distance between the rotation shafts of the rotating members 152 is greater than the collision force between the first collision portion 152a and the first transmission member 11 when the rotating members 152 rotate, the distance between the first protrusion 11a and the main shaft 10 is greater than the distance between the second protrusion 11b and the main shaft 10, the moment generated by the collision force between the first collision portion 152a and the first protrusion 11a to drive the first transmission member 11 to rotate is greater, so that the first abutting surface 110 and the second abutting surface 120 can be reliably separated, and after the first abutting surface 110 and the second abutting surface 120 are separated, the second transmission member 12 starts to rotate under the elastic force of the first elastic member 14 and drives the first electrical contact 121 and the second electrical contact 122 to be separated. Further, after the first collision portion 152a collides with the first protrusion 11a, the second collision portion 152b contacts the second protrusion 11b (as shown in fig. 7) to realize a second collision on the first transmission member 11, the first transmission member 11 is provided with a third protrusion 11c, at this time, since the second collision portion 152b collides with the second protrusion 11b, the first contact surface 110 and the second contact surface 120 are already separated under the collision action of the first collision portion 152a and the first protrusion 11a, the first transmission member 11 is in a free state, the first transmission member 11 can accelerate to rotate under the kinetic energy of the collision, the third protrusion 11c provided on the first transmission member 11 can collide with the second transmission member 12, the second transmission member 12 is under the elastic force of the second transmission member 12 under the elastic force of the first elastic member 14, the third protrusion 11c is also subjected to the impact force, so that the rotation speed of the second transmission member 12 is increased, the separation speed of the first electric contact 121 and the second electric contact 122 is increased, the separation time of the first electric contact 121 and the second electric contact 122 is shortened, the short-circuit breaking capacity of the circuit breaker is improved, and the service life of the circuit breaker is prolonged.

Meanwhile, since the distance from the first collision portion 152a to the rotation axis of the rotation member 152 is smaller than the distance from the second collision portion 152b to the rotation axis of the rotation member 152, the stroke of the second collision portion 152b is larger than the stroke of the first collision portion 152a, and therefore, the stroke of the third protrusion 11c generated by the collision of the second collision portion 152b with the second protrusion 11b is larger than the stroke of the third protrusion 11c generated by the collision of the first collision portion 151a with the first protrusion 11a, and only the first collision portion 152a is provided with respect to the rotation member 152, in this embodiment, the second collision portion 152b is provided to enable the third protrusion 11c to generate a larger movement. The opening distance between the first electric contact 121 and the second electric contact 122 is larger, and the breaking and current limiting effects of the circuit breaker are better. It should be noted that, in the case that the connecting rod 123 and the movable contact 124 are provided on the second transmission member 12, when the third protrusion 11c collides with the second transmission member 12, the first stop surface 1231 provided on the connecting rod 123 and the second stop surface 1241 provided on the movable contact 124 are already contacted, that is, the connecting rod 123 and the movable contact 124 integrally rotate at this time, so that the movable contact 124 and the connecting rod 123 do not relatively rotate after the third protrusion 11c collides.

In a possible embodiment, the opening operating mechanism includes an operating element, so that the opening operating mechanism supports manual opening of the circuit breaker, which means that a component of the circuit breaker is manually operated to open the circuit breaker, specifically, as shown in fig. 1, the opening operating mechanism further includes an operating element 16, the transmission part 13 is connected to the operating element 16, the operating element 16 includes a closing position and an opening position (as shown in fig. 1 and 8, the operating element 16 is in the closing position in fig. 1, and the operating element 16 is in the opening position in fig. 8), when the first abutting surface 110 abuts against the second abutting surface 120, and the first electrical contact 121 contacts the second electrical contact 122, the operating element 16 is in the closing position, and it is worth mentioning that when the first transmission piece 11 and the second transmission piece 12 are kept relatively stationary, due to the combined action of the acting force between the operating element 16 and the transmission part 13, the acting force between the first abutting surface 110 and the second abutting surface 120, the acting force between the first electrical contact 121 and the second electrical contact 122, and the elastic force of the first elastic member 14, at this time, the operating element 16 is also kept stationary relative to the first transmission member 11 and the second transmission member 12, so that the first electrical contact 121 and the second electrical contact 122 are kept in contact, and the operating element 16 is kept at the closing position. When the brake is required to be opened, the operating element 16 is operated to move the operating element 16 to the opening position, and in the process that the operating element 16 moves to the opening position, the transmission part 13 is driven to move, and the second transmission piece 12 and the transmission part 13 move together, so that the first electric contact 121 and the second electric contact 122 are separated, and the opening is realized. When the opening is performed by operating the operating element 16, the first contact surface 110 and the second contact surface 120 maintain the contact state.

Specifically, as shown in fig. 10 (in fig. 10, the portion of the second transmission member 11 excluding the transmission portion 13 is hidden), the transmission portion 13 is connected to the operating member 16 through a connecting rod 136, both ends of the connecting rod 136 are respectively connected with the transmission part 13 and the operating part 16 in a rotating way, the transmission part 13 may be provided with a first hole for receiving one end of the connecting rod, the operation part 16 may be provided with a second hole for receiving the other end of the connecting rod, both ends of the connecting rod may rotate in the first hole and the second hole respectively, in the process of operating the operating member 16 to move to the opening position, the operating member 16 rotates around the fixed shaft, the connecting rod 136 follows the movement of the second hole to move the transmission part 13, meanwhile, the rotation of the connecting rod 136 in the first hole and the second hole can prevent the operating part 16 from being stuck in the process of driving the transmission part 13.

Further, in this embodiment, in order to reduce the operating force of the operating member 16 driving the transmission member 13, the distance from the first electrical contact 121 on the movable contact 124 to the rotating shaft 1230 is equal to the distance from the acting point of the first elastic member 14 on the movable contact 124 to the rotating shaft 1230.

Further, the opening operating mechanism provided in this embodiment further supports a closing function, and specifically, in the case that the operating element 16 is provided, in order to switch the breaker from the opening state to the closing state by operating the operating element 16, after the opening operating mechanism opens, the operating element 16 is located at the opening position. When the brake opening operation is performed by operating the operating member 16, the operating member 16 is moved to the brake opening position, and when the brake opening operation is performed by the internal driving member 15, after the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaging state, the transmission portion 13 moves along with the second transmission member 12 so that the operating member 16 reaches the brake opening position.

In a possible implementation manner, in order to enable the operating element 16 to reach the opening position more quickly during opening, the opening actuation mechanism further includes a second elastic member 17, an elastic force of the second elastic member 17 acts on the operating element 16, and the second elastic member 17 is used for assisting the operating element 16 to reach the opening position after the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaging state. Specifically, the second elastic member 17 may be a spring, an elastic sheet, or the like, and after the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaging state, the elastic force direction of the second elastic member 17 is a direction close to the opening position, so that the operating member 16 receives the elastic force of the second elastic member 17 in addition to the pushing force of the transmission portion 13, so that the operating member 16 reaches the opening position more quickly, and at the same time, the operating member 16 can be moved to the opening position when the transmission portion 13 provides a smaller pushing force, and the pushing force of the transmission portion 13 is obtained by the elastic force of the first elastic member 14, so that the first elastic member 14 can be designed to have a smaller elastic force and reduce the volume.

In one embodiment of the second elastic member 17, as shown in fig. 11, the operating member 16 rotates around a fixed shaft, the operating member 16 is provided with an elastic force acting surface 162, the elastic force of the second elastic member 17 acts on the elastic force acting surface 162, when the opening/closing mechanism is in a closed state, the elastic force of the second elastic member 17, the acting force between the first abutting surface 110 and the second abutting surface 120, the elastic force of the first elastic member 14, and the acting force between the first electrical contact 121 and the second electrical contact 122 keep the operating member 16, the first transmission member 11, and the second transmission member 12 in balance, the opening/closing mechanism keeps the closed state, and when the abutting state of the first abutting surface 110 and the second abutting surface 120 is converted into a disengaged state, the operating member 16 rotates to the opening/closing position along with the second transmission member 12, the elastic force of the second elastic member 17 always acts on the elastic force acting surface 162 to assist the operating member 16 to move to the opening position until the operating member 16 reaches the opening position, and after the operating member 16 reaches the opening position, as shown in fig. 12, the elastic force of the second elastic member 17 may further continuously act on the elastic force acting surface 162 to keep the operating member 16 at the opening position. It is apparent that, even when the operation element 16 is operated to open the brake, the elastic force of the second elastic member 17 always acts on the elastic force acting surface 162 to assist the operation element 16 to reach the brake opening position, so that the brake opening operation force of the operation element 16 can be reduced.

The opening operation mechanism includes a third elastic member 18, and when the inner driving member 15 is used to open the brake, after the first abutting surface 110 and the second abutting surface 120 are switched from the abutting state to the disengaged state, the elastic force of the third elastic member 18 acts on the first transmission member 11 to cause the first abutting surface 110 and the second abutting surface 120 to abut again, so that the first abutting surface 110 and the second abutting surface 120 return to the closed state while the abutting state is maintained. Specifically, the third elastic element 18 is fixedly disposed, the third elastic element 18 may be fixed on the circuit breaker housing or fixed on the main shaft, and the third elastic element 18 may be a spring, an elastic sheet, or the like. Fig. 8 to 9 illustrate an embodiment when the third elastic member 18 is a spring, as shown in fig. 13, the elastic portion of the third elastic member 18 does not contact the first transmission member 11 when the first abutting surface 110 and the second abutting surface 120 abut, after the first transmission member 11 rotates to make the first abutting surface 110 and the second abutting surface 120 change from the abutting state to the disengaged state, the first transmission member 11 continues to rotate, the second transmission member 12 drives the transmission portion 13 to move, the first transmission member 11 contacts the third elastic member 18 after rotating to a certain angle, the rotation is limited, after the second transmission member 12 rotates to a certain angle, the transmission portion 13 contacts the first transmission member 11 again, and the elastic force of the third elastic member 18 acts on the first transmission member 11, the friction force between the first abutting surface 110 and the second abutting surface 120 is overcome, so that the first abutting surface 110 and the second abutting surface 120 abut again (as shown in fig. 8-9, fig. 9 is a view of hiding the part of the second transmission member 12 except the transmission part 13 in fig. 8). The second transmission member 12 is provided with a third stop surface 125, when the first abutting surface 110 and the second abutting surface 120 abut against each other again, the third stop surface 125 contacts with a limiting structure arranged on the circuit breaker, so that the second transmission member 12 cannot rotate continuously, the first transmission member 11, the transmission portion 13 and the second transmission member 12 keep relatively still again, and the first electrical contact 121 and the second electrical contact 122 are kept in a separated state. At this time, the first transmission member 11 and the second transmission member 12 may rotate around the main shaft 10 as a whole, and when the switch is closed, a driving force is applied to rotate the first transmission member 11 and the second transmission member 12 as a whole until the first electrical contact 121 and the second electrical contact, so that the switch is closed. When the operating element 16 is provided, after the first abutting surface 110 and the second abutting surface 120 abut against each other again, the operating element 16 may be operated to close the switch, and when the switch is closed, the operating element 16 moves from the open position to the closed position to drive the transmission part 13 to move, and the first transmission member 11 rotates together with the second transmission member 12 due to the abutting force of the first abutting surface 110 and the second abutting surface 120, so that the first electrical contact 121 and the second electrical contact 122 contact each other, and the switch is closed. After the switching-on, the switching-off action mechanism is restored to the switching-on state, that is, the switching-off action mechanism maintains balance until the operating part 16 is operated or the first transmission part 11 rotates, so that the balance of the switching-off action mechanism is broken, and the switching-off action is performed.

In summary, the present embodiment provides a tripping operation mechanism, in which a first elastic member, a first transmission member and a second transmission member are disposed, the first transmission member and the second transmission member rotate around a same main shaft, a transmission portion is disposed at one end of the second transmission member, a first electrical contact is disposed at the other end of the second transmission member, an elastic force of the first elastic member acts on the second transmission member, and the direction of the elastic force is a direction away from the second electrical contact in a circuit breaker, when the first abutting surface abuts against the second abutting surface and the first electrical contact contacts the second electrical contact, the first transmission member and the second transmission member are kept relatively stationary, so that the first electrical contact and the second electrical contact can be kept in contact, so that the circuit breaker is in a closing state, and when the first abutting surface and the second abutting surface are converted from the abutting state to the disengaging state, due to loss of an acting force between the first abutting surface and the second abutting surface, the first elastic piece can drive one end, provided with the first electric contact, of the second transmission piece to rotate towards one end, far away from the second electric contact, so that the first electric contact and the second electric contact are separated, a circuit is cut off, and brake opening is achieved.

In another embodiment of the present invention, a circuit breaker is provided, wherein the circuit breaker comprises the opening action mechanism as described above.

Based on the above opening actuating mechanism, in another embodiment of the present invention, there is further provided an opening method, including:

s100, the first transmission member rotates to convert the first abutting surface and the second abutting surface from the abutting state to the disengaging state, as described in the embodiment of the opening actuating mechanism;

s200, the second transmission member rotates under the elastic force of the first elastic member to separate the first electrical contact from the second electrical contact, as described in the embodiment of the opening mechanism.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a separating brake actuating mechanism which characterized in that, is applied to the circuit breaker, separating brake actuating mechanism includes:

the first transmission piece can rotate around the main shaft, and a first abutting surface is arranged on the first transmission piece;

a transmission part is arranged at one end of the second transmission part and provided with a second abutting surface, a first electric contact is arranged at the other end of the second transmission part, and the second transmission part can rotate around the main shaft;

the first elastic piece, the elasticity of first elastic piece acts on the second driving medium, just the elasticity direction of first elastic piece is for keeping away from the direction of the second electrical contact in the circuit breaker, works as first butt face with second butt face butt just first electrical contact with when the second electrical contact in the circuit breaker contacts, first driving medium and the second driving medium keeps relative static, works as first butt face with when the second butt face turns into the disengagement state by the butt state, the second driving medium rotates so that first electrical contact with the separation of second electrical contact.

2. The opening actuating mechanism as claimed in claim 1, wherein the opening actuating mechanism includes an inner driving member for driving the first transmission member to rotate so as to convert the first abutting surface and the second abutting surface from the abutting state to the disengaging state.

3. The opening operating mechanism according to claim 1, wherein the opening operating mechanism includes an operating member, and the transmission portion is connected to the operating member.

4. The opening operating mechanism according to claim 3, wherein the transmission part is connected to the operating part through a connecting rod, and both ends of the connecting rod are rotatably connected to the transmission part and the operating part, respectively.

5. The opening operating mechanism according to claim 3, wherein the transmission portion moves following the second transmission member after the first abutting surface and the second abutting surface are converted from the abutting state to the disengaged state so that the operating member reaches the opening position.

6. The opening operating mechanism according to claim 5, further comprising:

and the elastic force of the second elastic piece acts on the operating piece, and the second elastic piece is used for assisting the operating piece to reach the brake separating position after the first abutting surface and the second abutting surface are converted into a disengaging state from an abutting state.

7. The opening actuating mechanism according to claim 1, further comprising:

and a third elastic member, wherein after the first abutting surface and the second abutting surface are switched from the abutting state to the separated state, the elastic force of the third elastic member acts on the first transmission member to enable the first abutting surface and the second abutting surface to abut again.

8. The opening operating mechanism according to claim 1, wherein the second transmission member includes:

the transmission part is arranged at one end of the connecting rod, and a first stop surface is arranged on the connecting rod;

the moving contact is rotationally connected with the connecting rod, the first electric contact is arranged on the moving contact, and a second stop surface matched with the first stop surface is arranged on the moving contact;

the elastic force of the first elastic piece acts on the movable contact.

9. A circuit breaker, characterized in that the circuit breaker comprises the opening operating mechanism according to any one of claims 1 to 8.

10. An opening method based on the opening action mechanism of any one of claims 1 to 8, characterized in that the opening method comprises the following steps:

the first transmission piece rotates to enable the first abutting surface and the second abutting surface to be converted into a separated state from an abutting state;

the second transmission piece rotates under the action of the elastic force of the first elastic piece, so that the first electric contact is separated from the second electric contact.

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