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

Abstract

The invention discloses an opening action mechanism, a circuit breaker and an opening method. The opening action mechanism is provided with a first elastic member, a first transmission member and a second transmission member that rotate around the same main shaft. A transmission member and the second transmission member are respectively provided with a first abutment surface and a second abutment surface, the elastic force of the first elastic member acts on the second transmission member, when the first abutment When the surface is in contact with the second abutting surface and the first electrical contact is in contact with the second electrical contact in the circuit breaker, the first transmission member and the second transmission member remain relatively static , when the first abutting surface and the second abutting surface are transformed from the abutting state to the disengaging state, the second transmission member rotates to make the first electrical contact and the second electrical contact Point separation to achieve opening. The opening actuating mechanism provided by the invention has few parts and simple assembly.

Description

A kind of opening action mechanism, circuit breaker and opening method

technical field

The invention relates to the technical field of circuit breakers, in particular to an opening actuating mechanism, a circuit breaker and an opening method.

Background technique

The circuit breaker is a common circuit protection device. Generally speaking, the circuit breaker has two states: open and closed. When the circuit breaker is in the closed state, the circuit operates normally. In the case of maintenance, etc., the circuit breaker needs to perform an opening action to cut off the circuit, while in the prior art, the opening action mechanism of the circuit breaker has many parts and is complicated to assemble.

Therefore, the existing technology still needs to be improved and improved.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an opening actuating mechanism, a circuit breaker and an opening method in view of the above-mentioned defects of the prior art, aiming to solve the problem that the opening actuating mechanism of the circuit breaker in the prior art has many parts and is assembled. complicated question.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is as follows:

An opening actuating mechanism, applied in a circuit breaker, the opening actuating mechanism comprises:

The first transmission member and the first transmission member can rotate around the main shaft, and the first transmission member is provided with a first abutting surface;

The second transmission member, one end of the second transmission member is provided with a transmission portion, the transmission portion is provided with a second contact surface, the other end of the second transmission member is provided with a first electrical contact, the The second transmission member is rotatable around the main shaft;

The first elastic member and the elastic force of the first elastic member act on the second transmission member, and the direction of the elastic force of the first elastic member is the direction away from the second electrical contact in the circuit breaker. When the first abutting surface and the second abutting surface are in contact and the first electrical contact is in contact with the second electrical contact in the circuit breaker, the first transmission member and the second The two transmission members remain relatively static, and when the first abutting surface and the second abutting surface are transformed from the abutting state to the disengaging state, the second transmission member rotates so that the first electrical contact and the The second electrical contacts are separated.

The opening actuating mechanism, wherein the opening actuating mechanism includes an inner driving member, and the inner driving member is used to drive the first transmission member to rotate, so that the first abutting surface and the first transmission member are rotated. The two abutting surfaces are transformed from the abutting state to the disengaging state.

The opening action mechanism, wherein the opening action mechanism includes an operating member, and the transmission portion is connected with the operating member.

In the opening action mechanism, wherein the transmission part is connected with the operating member through a connecting rod, and two ends of the connecting rod are respectively rotatably connected with the transmission part and the operating member.

The opening action mechanism, wherein, after the first abutting surface and the second abutting surface are transformed from the abutting state to the disengaging state, the transmission part follows the movement of the second transmission member to make the transmission part move. The operating member reaches the opening position.

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

A second elastic member, the elastic force of the second elastic member acts on the operating member, and the second elastic member is used to change from the abutting state between the first abutting surface and the second abutting surface To assist the operating member to reach the opening position after the disengagement state.

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

The third elastic member, after the first abutting surface and the second abutting surface are converted from the abutting state to the disengaging state, the elastic force of the third elastic member acts on the first transmission member to The first abutting surface and the second abutting surface are brought into contact again.

The said opening action mechanism, wherein, the second transmission member comprises:

a connecting rod, one end of the connecting rod is provided with the transmission part, and the connecting rod is provided with a first stop surface;

a moving contact, the moving contact is rotatably connected with the connecting rod, the first electrical contact is arranged on the moving contact, and the moving contact is arranged on the moving contact to cooperate with the first stop surface the second stop surface;

The elastic force of the first elastic member acts on the movable contact.

A circuit breaker, wherein the circuit breaker includes the opening actuating mechanism according to any one of the above.

An opening method based on the opening actuating mechanism according to any one of the above, wherein the opening method comprises:

The first transmission member is rotated, so that the first abutting surface and the second abutting surface are transformed from an abutting state to a disengaging state;

The second transmission member rotates under the action of the elastic force of the first elastic member, so as to separate the first electrical contact from the second electrical contact.

Beneficial effects: Compared with the prior art, the present invention provides an opening actuating mechanism, a circuit breaker and an opening method. The opening actuating mechanism is applied to a circuit breaker. A first transmission member and a second transmission member for the rotation of the main shaft, one end of the second transmission member is provided with a transmission portion, and the other end is provided with a first electrical contact, and the elastic force of the first elastic member acts on the second transmission member. on the transmission member, and the direction of the elastic force is the direction away from the second electrical contact in the circuit breaker, when the first abutting surface and the second abutting surface abut and the first electrical contact and the When the second electrical contact is in contact, the first transmission member and the second transmission member remain 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 contact with each other. In the closing state, when the first abutting surface and the second abutting surface are converted from the abutting state to the disengaging state, because of the loss of the relationship between the first abutting surface and the second abutting surface The first elastic member will drive the end of the second transmission member provided with the first electrical contact to rotate to the end away from the second electrical contact, so that the first electrical contact The point is separated from the second electrical contact, the circuit is cut off, and the opening is realized. The opening action mechanism provided by the present invention has a small number of parts and is simple to assemble.

Description of drawings

FIG. 1 is a schematic diagram 1 of the overall structure of the closed state of an embodiment of an opening actuating mechanism provided by the present invention;

FIG. 2 is a schematic diagram 2 of the overall structure of the closed state of an embodiment of an opening actuating mechanism provided by the present invention;

3 is a schematic diagram 1 of the overall structure when the first abutting surface and the second abutting surface of an embodiment of an opening actuating mechanism provided by the present invention are transformed from an abutting state to a disengaged state;

Fig. 4 is a schematic diagram 2 of the overall structure when the first abutting surface and the second abutting surface of an embodiment of an opening actuating mechanism provided by the present invention are transformed from an abutting state to a disengaged state;

5 is a schematic diagram of an inner driving member in an embodiment of an opening action mechanism provided by the present invention;

FIG. 6 is a schematic diagram 1 of an inner driving member driving the opening in an embodiment of an opening action mechanism provided by the present invention;

Fig. 7 is a schematic diagram 2 of an inner driving member driving the opening in an embodiment of an opening action mechanism provided by the present invention;

FIG. 8 is a schematic diagram 1 of the overall structure of the opening state of an embodiment of an opening actuating mechanism provided by the present invention;

FIG. 9 is a schematic diagram 2 of the overall structure of the opening state of an embodiment of an opening actuating mechanism provided by the present invention;

10 is a schematic diagram of the connection structure of the transmission part and the operating member in an embodiment of an opening action mechanism provided by the present invention;

Fig. 11 is a schematic diagram 1 of the working principle of the second elastic member in an embodiment of an opening actuating mechanism provided by the present invention;

Fig. 12 is a schematic diagram 2 of the working principle of the second elastic member in an embodiment of an opening actuating mechanism provided by the present invention;

FIG. 13 is a schematic diagram of the working principle of the third elastic member in an embodiment of an opening actuating mechanism provided by the present invention.

Detailed ways

In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In one embodiment of the present invention, an opening action mechanism is provided. The opening action mechanism is applied to a circuit breaker. As shown in Figures 1-2, the opening action mechanism includes: a main shaft 10, a first A transmission member 11, the first transmission member 11 can rotate around the main shaft 10, the opening action mechanism further includes a second transmission member 12, and one end of the second transmission member 12 is provided with a transmission portion 13, the The transmission part 13 can be integrally formed with the second transmission member 12, or can be fixedly connected by riveting, screw connection, etc. after being formed separately. The first transmission member 11 is provided with a first abutting surface 110, so the The transmission part 13 is provided with a second abutment surface 120 (as shown in FIG. 2 , which is a diagram after the part of the second transmission part 12 in FIG. 1 except for the transmission part 13 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 cooperates with the second electrical contact 122 provided in the circuit breaker where the opening action mechanism is located to realize a circuit When the first electrical contact 121 is in contact with the second electrical contact 122, the circuit is turned on, and the circuit breaker is in a closed state, when the first electrical contact When the point 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 can rotate around the main shaft 10, and the opening action mechanism further includes a first elastic member 14. The first elastic member 14 can be a spring, an elastic sheet, etc. The elastic force acts on the second transmission member 12, and the direction of the elastic force of the first elastic member 14 is the direction away from the second electrical contact 122, when the first contact surface 110 and the second When the contact surface 120 is in contact and the first electrical contact 121 and the second electrical contact 122 are in contact, due to the force between the first contact surface 110 and the second contact surface 120 , the force between the first electrical contact 121 and the second electrical contact 122 and the elastic force of the first elastic member 14, the opening action mechanism is balanced by force, the first transmission member 11 and the second transmission member 12 remain relatively stationary. If the position of the second electrical contact 122 is fixed, then the first electrical contact 121 and the second electrical contact 122 can maintain a contact state, that is, the circuit breaker remains in a closed state. When the first abutting surface 110 and the second abutting surface 120 change from the abutting state to the disengaging state (as shown in FIG. 3-4 , FIG. 4 shows the second transmission member in FIG. 3 12. The part except the transmission part 13 is hidden), since the force between the first abutting surface 110 and the second abutting surface 120 disappears, the first transmission part 11 The force balance between the second transmission member 12 and the second transmission member 12 is broken. Under the elastic force of the first elastic member 14, the second transmission member 12 rotates, so that the first transmission member 12 rotates. An electrical contact 121 is separated from the second electrical contact 122. Specifically, the elastic force of the first elastic member 14 acts between the first electrical contact 121 and the main shaft 10. When the second transmission member 12 rotates around the main shaft 10, the end provided with the first electrical contact 121 moves in a direction away from the second electrical contact 122, so that the first electrical contact 121 and the The second electrical contact 122 is separated, the circuit is cut off, and the circuit breaker is opened. The separation of the first electrical contact 121 and the second electrical contact 122 may be achieved by external force driving the first transmission member 11 to rotate, that is, the first transmission member 11 is used to rotate when receiving external force so that the first electrical contact 121 and the second electrical contact 122 are separated.

It can be seen from the above description that the opening action mechanism provided by the present invention can realize opening through a small number of parts (the main shaft, the first elastic part, the first transmission part and the second transmission part), and there is only one elastic part, 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 the movable contact 124, the movable contact 124 is rotatably connected to the connecting rod 123. Specifically, the connecting rod 123 is provided with a rotating shaft 1230, and the moving contact 124 is connected to the connecting rod 123 through the rotating shaft 1230. The connecting rod 123 is rotatably connected, one end of the connecting rod 123 is provided with the transmission part 13 , the first electrical contact 121 is provided on the movable contact 124 , and the connecting rod 123 is provided with a second electrical contact. A stop surface 1231 , the movable contact 124 is provided with a second stop surface 1241 that cooperates with the first stop surface 1231 , and the elastic force of the first elastic member 14 acts on the movable contact 124 On the upper side, the rotating shaft 1230 is arranged between the elastic force acting point of the first elastic member 14 and the first electrical contact 121, so that between the first electrical contact 121 and the second electrical contact When the point 122 is in contact, under the action of the elastic force of the first elastic member 14, the end of the movable contact 124 provided with the first electrical contact 121 rotates in the direction of the second electrical contact 122. The trend makes the contact between the first electrical contact 121 and the second electrical contact 122 more reliable. After the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaging state, the elastic force of the connecting rod 123 on the first elastic member 14 and the second The electrical contact 122 rotates under the action of the force of the first electrical contact 121 , and the movable contact 124 rotates around the rotating shaft 1230 under the elastic force of the first elastic member 14 . After the movable contact 124 rotates around the rotation axis 1230 by a certain angle, the first stop surface 1231 and the second stop surface 1241 are in contact, so that the movable contact 124 can no longer continue to rotate around the rotation axis 1230 rotates, at this time, the connecting rod 123 and the movable contact 124 rotate as a whole (as shown in FIG. 3 ) to realize the separation of the first electrical contact 121 and the second electrical contact 122 .

In a possible implementation manner, the opening action mechanism includes an internal driving member, so that the opening action mechanism supports the automatic opening of the circuit breaker. Specifically, the automatic opening of the circuit breaker means that no manual operation is required to open the circuit It is a part of the circuit breaker, but relies on the action of the circuit breaker itself to realize the opening. As shown in FIG. 5 , the opening action mechanism further includes an inner driving member 15, and the inner driving member 15 is used to drive the first transmission member 11 to rotate, so that the first abutting surface 110 and the The second abutting surface 120 is transformed from the abutting state to the disengaging state, and the inner driving member 15 drives the first transmission member 11 to rotate under the condition of short circuit, overload and other faults in the circuit, or, in other situations that need to be opened Next, the circuit breaker controls the inner driving member 15 to drive the first transmission member 11 to rotate after receiving an external command.

In a possible implementation, the inner driving member 15 includes a power member 151 and a rotating member 152. When driving the first transmission member 11 to rotate, the power member 151 provides power, so that the rotating member 152 The first transmission member 11 is collided to rotate, and the direction of the impact force of the rotating member 152 on the first transmission member 11 is the direction away from the second electrical contact 122 to realize the first contact The separation between the surface 110 and the second abutting surface 120, specifically, the power element 151 can be an electromagnetic system, the electromagnetic system includes a coil winding, and the coil winding generates an electromagnetic torque after being turned on, so as to provide adsorption of the The suction force of the rotating member 152, the rotating member 152 is provided with a reset elastic member, and when the brake needs to be opened, the power member 151 generates an electromagnetic torque greater than the counter torque of the armature reset elastic member, so that the two The end rotates in the direction shown by the arrow in FIG. 5 so as to hit the first transmission member 11 . After the rotating member 152 drives the opening action mechanism to complete the opening, the power member 151 no longer provides power, and the rotating member 152 is reset under the action of the reset elastic member, so that the rotating member 152 can realize the next opening drive. Of course, the power member 151 may also be other components that can drive the rotation member 152 to rotate.

In a possible implementation manner, the rotating member 152 is provided with a first collision portion 152a and a second collision portion 152b, and an included angle is formed between the first collision portion 152a and the second collision portion 152b, so The first transmission member 11 is provided with a first protrusion 11a and a second protrusion 11b, the first protrusion 11a and the first collision portion 152a are correspondingly disposed, and the second protrusion 11b and the The two collision parts 152b are correspondingly arranged. When the gate is opened by driving the first transmission member 11 to rotate, the first collision part 152a first contacts the first protrusion 11a (as shown in FIG. The first collision of the first transmission member 11, the first transmission member 11 starts to rotate under the action of the collision force, and the first abutting surface 110 and the second abutting surface 120 are in the abutting state In the disengaged state, the distance from the first collision portion 152a to the rotation axis of the rotating member 152 is smaller than the distance from the second collision portion 152b to the rotation axis of the rotating member 152. When the rotating member 152 rotates The collision force of the first collision portion 152 a to the first transmission member 11 is greater than the collision force of the second collision portion 152 b to the first transmission member 11 , and the first protrusion 11 a to the main shaft 10 The distance is greater than the distance between the second protrusion 11b and the main shaft 10, and the torque generated by the collision force of the first collision portion 152a on the first protrusion 11a to drive the first transmission member 11 to rotate is larger than that of the first transmission member 11. large, to ensure that the first abutting surface 110 and the second abutting surface 120 can be reliably disengaged. After the first abutting surface 110 and the second abutting surface 120 are disengaged, the second transmission member 12 starts to rotate under the action of the elastic force of the first elastic member 14, and drives the first electrical contact 121 and the second electrical contact 122 to disengage. 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 ), so that the In the second collision of the first transmission member 11, the first transmission member 11 is provided with the third protrusion 11c. At this time, when the second collision portion 152b collides with the second protrusion 11b, the first The contact surface 110 and the second contact surface 120 have been disengaged under the impact of the first collision portion 152a and the first protrusion 11a, the first transmission member 11 is in a free state, and the first transmission member 11 is in a free state. A transmission member 11 will be accelerated to rotate under the action of the kinetic energy of the collision, and the third protrusion 11c provided on the first transmission member 11 will collide with the second transmission member 12, and the second transmission member 12 is in the Under the elastic force of the first elastic member 14, the second transmission member 12 is also subjected to the collision force of the third protrusion 11c, so that the rotation speed of the second transmission member 12 is increased and accelerated. The separation speed of the first electrical contact 121 and the second electrical contact 122 reduces the separation time of the first electrical contact 121 and the second electrical contact 122, and improves the short-circuit breaking capacity of the circuit breaker, thereby Increase the life of the circuit breaker.

Meanwhile, since the distance from the first collision portion 152a to the rotation axis of the rotating member 152 is smaller than the distance from the second collision portion 152b to the rotation axis of the rotating member 152, the second collision portion 152b The stroke of the first collision part 152a is greater than the stroke of the first collision part 152a. Therefore, the stroke of the third protrusion 11c generated by the collision of the second collision part 152b with the second protrusion 11b is larger than that of the first collision part The stroke of the third protrusion 11c generated by the collision of the first protrusion 11a with the first protrusion 11a is only provided with the first collision portion 152a relative to the rotating member 152. In this embodiment, a second collision is provided. The portion 152b enables greater movement of the third protrusion 11c. The opening distance of the first electrical contact 121 and the second electrical contact 122 is made larger, and the breaking and current limiting effect of the circuit breaker is better. It should be noted that, when the second transmission member 12 is provided with the connecting rod 123 and the movable contact 124, 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 moving contact 124 have been in contact, that is, the connecting rod 123 and the moving contact The head 124 is integrally rotated, so that the relative rotation of the movable contact 124 and the connecting rod 123 does not occur after the collision of the third protrusion 11c.

In a possible implementation manner, the opening action mechanism includes an operating member, so that the opening action mechanism supports manual opening of the circuit breaker, and manual opening of the circuit breaker refers to manually operating the components of the circuit breaker to realize opening Specifically, as shown in FIG. 1 , the opening action mechanism further includes an operating member 16, the transmission portion 13 is connected with the operating member 16, and the operating member 16 includes a closing position and an opening position (such as As shown in FIG. 1 and FIG. 8 , the operating member 16 in FIG. 1 is in the closing position, and the operating member 16 in FIG. 8 is in the opening position), when the first abutting surface 110 and the second abutting surface When the contact surface 120 is in contact with the first electrical contact 121 and the second electrical contact 122, the operating member 16 is in the closing position. It is worth noting that at this time, the first transmission member 11 And the fact that the second transmission member 12 remains relatively static is due to the force between the operating member 16 and the transmission portion 13 , and between the first abutting surface 110 and the second abutting surface 120 . The acting force of the first electrical contact 121 and the second electrical contact 122 and the elastic force of the first elastic member 14 work together. At this time, the operating member 16 is also The first transmission member 11 and the second transmission member 12 are kept relatively stationary, so that the first electrical contact 121 and the second electrical contact 122 are kept in contact, and the operating member 16 is kept in engagement. brake position. When the brake needs to be opened, the operating member 16 is moved to the opening position by operating the operating member 16. During the process of moving the operating member 16 to the opening position, the transmission part 13 is driven to move, so the The second transmission member 12 and the transmission portion 13 move together, so that the first electrical contact 121 and the second electrical contact 122 are separated to realize opening. When the gate is opened by operating the operating member 16 , the abutting state of the first abutting surface 110 and the second abutting surface 120 remains unchanged.

Specifically, as shown in FIG. 10 (in FIG. 10 , the part of the second transmission member 11 from which the transmission portion 13 is removed has been hidden), the transmission portion 13 is connected to the operating member 16 through a connecting rod 136 . , the two ends of the connecting rod 136 are respectively rotatably connected with the transmission part 13 and the operating member 16, the transmission part 13 can be provided with a first hole for accommodating one end of the connecting rod, the operating member 16 can be provided with a second hole for accommodating the other end of the connecting rod, the two ends of the connecting rod can be rotated in the first hole and the second hole respectively, and the operating member 16 can be moved when the operating member 16 is operated. In the process of reaching the opening position, the operating member 16 rotates around the fixed axis, and the connecting rod 136 follows the movement of the second hole to drive the transmission part 13 to move. The rotation in the first hole and the second hole can prevent the operating member 16 from being stuck in the process of driving the transmission portion 13 .

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

Further, the opening action mechanism provided in this embodiment also supports the closing function. Specifically, in the case where the operating member 16 is provided, in order to realize the operation of the operating member 16 to change the circuit breaker from the opening state Switching to the closed state, after the opening action mechanism is opened, the operating member 16 will be in the opening position. When the opening action is realized by operating the operating member 16 , the operating member 16 will be moved to the opening position, and when the opening action is realized by the inner driving member 15 , the first contact After the surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaging state, the transmission part 13 moves with the second transmission member 12 so that the operating member 16 reaches the opening position.

In a possible implementation manner, in order to make the operating member 16 reach the opening position more quickly when the brake is opened, the opening action mechanism further includes a second elastic member 17, and the second elastic member The elastic force of 17 acts on the operating member 16, and the second elastic member 17 is used to assist the operation after the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaging state. The operating member 16 reaches the opening position. Specifically, the second elastic member 17 may be a spring, an elastic sheet, etc. After the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaging state, the second elastic The direction of the elastic force of the member 17 is the 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 thrust of the transmission part 13, so that the The operating member 16 reaches the opening position faster, and at the same time, it can be realized that the operating member 16 can be moved to the opening position even when the transmission part 13 provides a small thrust, and the transmission part The thrust of 13 is obtained due to 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 an embodiment of the second elastic member 17 , as shown in FIG. 11 , the operating member 16 rotates around a fixed axis, an elastic force acting surface 162 is provided on the operating member 16 , and the second elastic member 17 The elastic force of the second elastic member 17 acts on the elastic force acting surface 162. When the opening action mechanism is in the closed state, the elastic force of the second elastic member 17 and the first abutting surface 110 and the second abutting The force between the surfaces 120, the spring force of the first elastic member 14, and the force between the first electrical contact 121 and the second electrical contact 122 together make the operating member 16, the The first transmission member 11 and the second transmission member 12 are kept in balance, and the opening action mechanism is kept in the closed state. When the first abutting surface 110 and the second abutting surface 120 change from the abutting state In the disengaged state, as the second transmission member 12 drives the operating member 16 to rotate to the opening position, the elastic force of the second elastic member 17 always acts on the elastic force acting surface 162 , assist the operating member 16 to move to the opening position until the operating member 16 reaches the opening position. After the operating member 16 reaches the opening position, as shown in FIG. 12 , the The elastic force of the second elastic member 17 may also continue to act on the elastic force acting surface 162 , so that the operating member 16 remains in the opening position. It is not difficult to see that when the operating member 16 realizes the opening, the elastic force of the second elastic member 17 also acts on the elastic force acting surface 162 all the time, assisting the operating member 16 to reach the opening position, The opening operating force of the operating member 16 can be reduced.

The opening action mechanism includes a third elastic member 18. When the opening is realized by the inner driving member 15, the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to After the disengagement state, the elastic force of the third elastic member 18 acts on the first transmission member 11 to make the first abutting surface 110 and the second abutting surface 120 abut again, so that all the The first abutting surface 110 and the second abutting surface 120 return to the closed state while maintaining the abutting state. Specifically, the third elastic member 18 is fixedly arranged, the third elastic member 18 may be fixed on the circuit breaker housing, or may be fixed on the main shaft, and the third elastic member 18 may be a spring , shrapnel, etc. FIGS. 8-9 show 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 is located between the first abutting surface 110 and the The second abutting surface 120 is not in contact with the first transmission member 11 when it abuts, and when the first transmission member 11 rotates, the first abutting surface 110 and the second abutting surface 120 are formed. After changing from the contact state to the disengaged state, the first transmission member 11 continues to rotate, and at the same time the second transmission member 12 drives the transmission portion 13 to move, and the first transmission member 11 rotates to a certain angle with the The third elastic member 18 is in contact and the rotation is limited, and after the second transmission member 12 is rotated to a certain angle, the transmission portion 13 will contact the first transmission member 11 again, and the third elastic member The elastic force of 18 acts on the first transmission member 11, overcoming the friction force between the first abutting surface 110 and the second abutting surface 120, so that the first abutting surface 110 and the The second abutting surface 120 abuts again (as shown in FIGS. 8-9 , FIG. 9 is a diagram of the second transmission member 12 in FIG. 8 except the transmission part 13 is hidden). The second transmission member 12 is provided with a third stop surface 125. When the first abutment surface 110 and the second abutment surface 120 abut again, the third stop surface 125 contacts the The limit structure provided on the circuit breaker makes the second transmission member 12 unable to continue to rotate, and the first transmission member 11, the transmission portion 13 and the second transmission member 12 remain relatively static again, so that the The first electrical contact 121 and the second electrical contact 122 maintain a separated state. At this time, the first transmission member 11 and the second transmission member 12 can rotate around the main shaft 10 as a whole. When the switch is closed, a driving force is applied to make the first transmission member 11 and all the The second transmission member 12 rotates as a whole until the first electrical contact 121 and the second electrical contact are in contact to reach a closed state. In the case where the operating member 16 is provided, after the first abutting surface 110 and the second abutting surface 120 are in contact again, the operating member 16 can be operated to realize closing. The operating member 16 moves from the opening position to the closing position, and drives the transmission portion 13 to move. The contact force and the second transmission member 12 rotate together, so that the first electrical contact 121 and the second electrical contact 122 are in contact to realize closing. After closing, the opening action mechanism returns to the closed state, that is, the opening action mechanism maintains a balance until the operating member 16 is operated or the first transmission member 11 is rotated, so that the opening action is performed The balance of the mechanism is broken, and the opening action is performed.

To sum up, the present embodiment provides an opening action mechanism. By arranging a first elastic member, a first transmission member and a second transmission member that rotate around the same main shaft, one end of the second transmission member is provided with a transmission The other end is provided with a first electrical contact, the elastic force of the first elastic member acts on the second transmission member, and the direction of the elastic force is the direction away from the second electrical contact in the circuit breaker. When the first abutting surface and the second abutting surface abut and the first electrical contact and the second electrical contact are in contact, the first transmission member and the second transmission member remain relatively stationary, so that , the first electrical contact and the second electrical contact can keep in contact, so that the circuit breaker is in the closed state, when the first abutting surface and the second abutting surface change from the abutting state In the disengaged state, since the force between the first abutting surface and the second abutting surface is lost, the first elastic member will drive the second transmission member to be provided with the first electrical One end of the contact is rotated to the end away from the second electrical contact, so that the first electrical contact and the second electrical contact are separated, the circuit is cut off, and the opening is realized. The opening action mechanism provided by the present invention , the number of parts is small, and the assembly is simple.

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

Based on the above-mentioned opening action mechanism, in another embodiment of the present invention, an opening method is further provided, and the opening method includes:

S100, the first transmission member is rotated, so that the first abutting surface and the second abutting surface are transformed from an abutting state to a disengaging state, as specifically described in the embodiment of the opening action mechanism;

S200, the second transmission member rotates under the elastic force of the first elastic member, so that the first electrical contact is separated from the second electrical contact, specifically as in the embodiment of the opening action mechanism said.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the 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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