Integrated tripping device and circuit breaker

Abstract

The present invention discloses an integrated tripping device and a circuit breaker. The integrated tripping device is applied to the circuit breaker, and includes a tripping device and a tripping actuator cooperating with the tripping device. The tripping device includes: a first tripping device for controlling the tripping actuator to perform a tripping operation when a short circuit or overload occurs in the circuit breaker; a second tripping device for driving the tripping actuator to perform a tripping operation when leakage, overvoltage, undervoltage, or remote control of the circuit breaker occurs in the circuit breaker; the first tripping device and the second tripping device are arranged into an integrated structure. The second tripping device and the first tripping device of the present invention are integrated into one design, occupying less space, and realizing functions such as short circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, overtemperature protection, self-test protection, and control of tripping without increasing the number of parts.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an integrated tripping device and a circuit breaker. Background Art

[0002] Circuit breakers are common circuit protection devices. Generally speaking, circuit breakers have two states: open and closed. When the circuit breaker is in the closed state, the circuit operates normally. In the event of an overload, short circuit or other fault, or when the circuit needs to be repaired, the circuit breaker needs to be opened to cut off the circuit. However, in the prior art, the tripping device used in the circuit breaker has a single function and is mainly assembled from a coil, a dynamic and static iron core, a push rod, a yoke, and a spring. The tripping device can only realize the short-circuit protection function. When other protection functions such as leakage protection and over-voltage and under-voltage protection need to be realized, a separate tripping device needs to be added to realize these functions, which requires additional parts, making the circuit breaker structure complex and large in size.

[0003] Therefore, the existing technology needs to be improved and enhanced. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an integrated tripping device and a circuit breaker in response to the above-mentioned defects of the prior art, aiming to solve the problem in the prior art that in order to realize more protection functions, the circuit breaker needs to add a separate tripping device to realize these functions, thereby requiring additional parts, making the circuit breaker structure complex and large in size.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] An integrated tripping device is applied to a circuit breaker, wherein the integrated tripping device comprises a tripping device and a tripping actuator cooperating with the tripping device; the tripping device comprises: a first tripping device for controlling the tripping actuator to perform a tripping operation when a short circuit or overload occurs in the circuit breaker; a second tripping device for controlling the tripping actuator to perform a tripping operation when a leakage, overvoltage, undervoltage fault occurs in the circuit breaker, and when the circuit breaker is remotely controlled to trip; the first tripping device and the second tripping device are arranged into an integrated structure.

[0007] In one embodiment, the first tripping device includes: a frame arranged on the circuit breaker; an oil cup arranged on the frame; a magnetic yoke arranged on the oil cup; an electromagnetic oil damping release composed of a coil arranged on the frame; and a rotating part arranged on the electromagnetic oil damping release and attracted by magnetic force.

[0008] In one embodiment, a central hole is provided in the frame, the oil cup is provided in the central hole, and is riveted to the yoke.

[0009] In one embodiment, the rotating member is provided on the housing of the circuit breaker and is rotatably connected to the housing. One end of the rotating member is used to be adsorbed with the oil cup, and the other end is used to cooperate with the opening actuator to drive the opening actuator to perform the opening operation.

[0010] In one embodiment, the second tripping device includes: a frame arranged on the circuit breaker; an oil cup arranged on the frame; a yoke arranged on the oil cup; a coil winding wound on the frame, and a rotating part arranged at one end of the frame and attracted to the oil cup by magnetic force, and the coil winding is connected to the control module in the circuit breaker.

[0011] In one embodiment, a central hole is provided in the frame, the oil cup is provided in the central hole, and is riveted to the yoke.

[0012] In one embodiment, the rotating member is provided on the housing of the circuit breaker and is rotatably connected to the housing. One end of the rotating member is used to be adsorbed with the oil cup, and the other end is used to cooperate with the opening actuator to drive the opening actuator to perform the opening operation.

[0013] In one embodiment, when the first tripping device and the second tripping device are configured as an integrated structure, the skeleton, the oil cup, the yoke, and the rotating member in the first tripping device are shared with the skeleton, the oil cup, the yoke, and the rotating member in the second tripping device.

[0014] In one embodiment, when the first tripping device and the second tripping device are configured as an integrated structure, the coil is disposed on one side of the coil winding, and the first tripping device and the second tripping device are arranged on the frame in a preset order.

[0015] A circuit breaker, characterized in that the circuit breaker includes the integrated opening device described in any one of the above solutions.

[0016] Beneficial effects: Compared with the prior art, the present invention provides an integrated tripping device and a circuit breaker. The integrated tripping device in the present invention integrates the second tripping device and the first tripping device into one integrated design, occupies less space, and realizes functions such as short-circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, over-temperature protection, self-test protection and control tripping without increasing the number of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the integrated tripping device provided by the present invention.

[0018] Figure 2 This is a structural schematic diagram of a specific application embodiment of the integrated tripping device provided by the present invention.

[0019] Figure 3 A schematic diagram of the collision between the first collision portion and the first protrusion in the integrated opening device provided by the present invention;

[0020] Figure 4 A schematic diagram of the collision between the second collision portion and the second protrusion in the integrated opening device provided by the present invention;

[0021] Figure 5 The overall structure of the opening actuator in one embodiment of the integrated opening device provided by the present invention is shown in FIG. Figure 1 ;

[0022] Figure 6 The overall structure of the opening actuator in one embodiment of the integrated opening device provided by the present invention is shown in FIG. Figure 2 ;

[0023] Figure 7 The overall structure of the opening actuator in one embodiment of the integrated opening device provided by the present invention is shown in FIG. Figure 3 ;

[0024] Figure 8 The overall structure of the opening actuator in one embodiment of the integrated opening device provided by the present invention is shown in FIG. Figure 4 ;

[0025] Figure 9 Schematic diagram of the collision between the rotating part and the opening actuator in one embodiment of the integrated opening device provided by the present invention Figure 1 ;

[0026] Figure 10 Schematic diagram of the collision between the rotating part and the opening actuator in one embodiment of the integrated opening device provided by the present invention Figure 2 ;

[0027] Figure 11 Schematic diagram of the opening actuator in the closed state in one embodiment of the integrated opening device provided by the present invention Figure 1 ;

[0028] Figure 12 Schematic diagram of the opening actuator in the closed state in one embodiment of the integrated opening device provided by the present invention Figure 2 ;

[0029] Figure 13A schematic diagram of the connection structure between the transmission part and the operating device in one embodiment of the integrated opening device provided by the present invention;

[0030] Figure 14 The working principle of the second elastic member in one embodiment of the integrated opening device provided by the present invention is shown as follows: Figure 1 ;

[0031] Figure 15 The working principle of the second elastic member in one embodiment of the integrated opening device provided by the present invention is shown as follows: Figure 2 ;

[0032] Figure 16 This is a schematic diagram of the working principle of the third elastic member in one embodiment of the integrated opening device provided by the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, 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 only used to explain the present invention and are not intended to limit the present invention.

[0034] In one embodiment of the present invention, an integrated tripping device is provided, such as Figure 1 As shown in , the integrated tripping device includes: a tripping device 100 and a tripping actuator 200 working in cooperation with the tripping device 100; the tripping device 100 includes: a first tripping device 101 for controlling the tripping actuator 200 to perform a tripping operation when a short circuit or overload occurs in the circuit breaker; a second tripping device 102 for driving the tripping actuator 200 to perform a tripping operation when a leakage, overvoltage, undervoltage fault occurs in the circuit breaker and the circuit breaker is remotely controlled to be tripped; the first tripping device 101 and the second tripping device 102 are arranged into an integrated structure. In this embodiment, since the first tripping device 101 and the second tripping device 102 are configured as an integrated structure, the first tripping device 101 controls the tripping actuator 200 to perform a tripping operation when a short circuit or overload occurs in the circuit breaker, and the second tripping device 102 controls the tripping actuator 200 to perform a tripping operation when a leakage, overvoltage, or undervoltage fault occurs in the circuit breaker, or when the circuit breaker is remotely controlled to trip. Therefore, the circuit breaker of this embodiment can implement functions such as short-circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, overtemperature protection, self-test protection, and controlled tripping without increasing the number of parts. Furthermore, since the second tripping device 102 and the first tripping device 101 are integrated into one design, they occupy less space. Compared to circuit breakers in the prior art, this embodiment can achieve the effect of miniaturization of the circuit breaker.

[0035] Specifically, if Figure 1 As shown in , in one implementation, the first tripping device 101 includes: an electromagnetic oil damping tripper composed of a skeleton 103 provided on the circuit breaker housing 10; an oil cup 104 provided on the skeleton 103; a yoke 105 provided on the oil cup 104; a coil 106 provided on the skeleton 103, and a rotating member 300 provided at one end of the skeleton 103 and adsorbed to the oil cup by magnetic force. In this embodiment, a center hole is provided in the skeleton 103, and the oil cup 104 is provided in the center hole and is engaged with the yoke 105, thereby fixing the oil cup 104. In addition, the rotating member 300 is provided in the housing ( Figure 1 The middle shell is omitted) and is rotatably connected to the shell. One end of the rotating member 300 is used to be adsorbed with the oil cup 104, and the other end is used to cooperate with the opening actuator 200 to drive the opening actuator 200 to perform the opening action. In specific applications, the electromagnetic oil damping tripping device in the first tripping device is connected in series in the main circuit of the circuit breaker. When normal current flows in the circuit, the electromagnetic torque generated by the electromagnetic oil damping tripping device is less than the reaction torque generated by the rotating part reset elastic part in the first tripping device, and the circuit breaker operates normally; when an overload or short circuit occurs in the circuit, the electromagnetic torque generated by the electromagnetic oil damping tripping device is greater than the reaction torque generated by the rotating part reset elastic part, thereby attracting the rotating part. Since the rotating part 300 is rotatably connected to the housing of the circuit breaker, the rotating part 300 rotates clockwise during the process of being attracted by the electromagnetic oil damping tripping device, and controls the opening actuator 200 to perform the opening operation during the rotation. After the opening operation is completed, the main circuit of the circuit breaker is disconnected, the electromagnetic torque generated by the electromagnetic oil damping tripping device disappears, and the rotating part returns to its initial position under the action of the torque of the reset elastic part.

[0036] In another implementation, Figure 1-Figure 3 As shown, the second tripping device 102 in this embodiment includes: a skeleton 103 provided on the circuit breaker; an oil cup 104 provided on the skeleton; a yoke 105 provided on the oil cup 104; a coil winding 107 wound on the skeleton 103 and a rotating member 300 provided at one end of the skeleton 103 and attracted to the coil winding by magnetic force, and the coil winding 104 is connected to the control module in the circuit breaker. A center hole is provided in the skeleton 103 in this embodiment, and the oil cup 104 is provided in the center hole and is engaged with the yoke 105 to fix the oil cup 104. Similarly, the rotating member 300 in this embodiment is provided in the housing ( Figure 1The rotating member 300 is mounted on the housing (the middle housing is omitted) and is rotatably connected to the housing. One end of the rotating member 300 is used to attract the coil winding in the second tripping device, and the other end is used to cooperate with the tripping actuator 200 to drive the tripping actuator 200 to perform the tripping operation. In specific applications, when leakage, overvoltage, undervoltage or other faults occur in the circuit, or when the user actively controls the tripping, the control module will send a control signal. After receiving the control signal, the coil winding will be turned on to generate an electromagnetic torque. When the electromagnetic torque generated by the coil winding is greater than the counter torque generated by the reset elastic member of the rotating member, the rotating member 300 is attracted. Since the rotating member 300 is rotatably connected to the housing of the circuit breaker, the rotating member 300 can rotate clockwise after receiving the electromagnetic torque, and control the tripping actuator 200 to perform the tripping operation during the rotation process.

[0037] Since the first tripping device 101 and the second tripping device 102 in this embodiment are integrally provided, and in order to realize the miniaturization of the circuit breaker, in this embodiment, when the first tripping device 101 and the second tripping device 102 are provided as an integral structure, the skeleton 103, the oil cup 104, the magnetic yoke 105 and the rotating member 300 of the first tripping device 101 are shared with the skeleton 103, the oil cup 104, the magnetic yoke 105 and the rotating member 300 of the second tripping device 102. And as Figure 1 As shown in FIG, the coil 106 is disposed above the coil winding 107. Thus, the tripping device 100 in this embodiment includes the first tripping device 101 and the second tripping device 102. Since the first tripping device 101 and the second tripping device 102 share many components, and the coil 106 is disposed above the coil winding 107, the first tripping device 101 and the second tripping device 102 are integrated into one body. This further makes the tripping device 100 more compact in size and structure. It not only implements functions such as short-circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, overtemperature protection, self-test protection, and controlled tripping without adding additional components, but also achieves the miniaturization of the circuit breaker.

[0038] In one embodiment, Figure 2As shown in , the opening actuator 200 in this embodiment is used to control the circuit breaker to perform an opening operation. The opening actuator 200 cooperates with the rotating member 300, and the movement of the rotating member 300 drives the opening actuator 200 to perform an opening operation. Specifically, the opening actuator 200 is provided with a first protrusion 11a and a second protrusion 11b, and the rotating member 300 is provided with a first collision portion 21a and a second collision portion 21b. When the rotating member 300 drives the opening actuator 200 to perform an opening operation, the first collision portion 21a is used to collide with the first protrusion 11a, and the second collision portion 21b is used to collide with the second protrusion 11b.

[0039] The tripping actuator 200 can be any mechanism capable of performing a tripping operation. Specifically, the tripping of a circuit breaker is achieved by separating electrical contacts. When the electrical contacts are connected, the circuit is connected, and the circuit breaker is in a closed state. When the electrical contacts are separated, the circuit is disconnected, and the circuit breaker is in an open state. The tripping actuator 200 is used to separate the electrical contacts to achieve tripping. In the prior art, there are various types of tripping actuators 200. The tripping actuator 200 in the present invention can be, but is not limited to, one of the various types of tripping actuators 200 in the prior art.

[0040] When opening is required, Figure 2 As shown, the rotating member 300 moves, the first collision portion 21a first collides with the first protrusion 11a, and the opening actuator 200 starts to move after receiving the collision force of the first collision portion 21a on the first protrusion 11a. During the operation of the opening actuator 200, as shown in FIG. Figure 4 As shown, the second collision portion 21b collides with the second protrusion 11b, again imparting kinetic energy to the trip actuator 200. Under the impact of the second collision portion 21b on the second protrusion 11, the trip actuator 200 accelerates its movement, achieving rapid tripping. From the foregoing description, it is readily apparent that the trip actuator 200 provided by the present invention, through the two collisions of the rotating member on the trip actuator 200, enables the trip actuator 200 to quickly perform a tripping operation, shortening the tripping time and thereby shortening the arc dwell time between the electrical contacts, thereby improving the performance and service life of the circuit breaker.

[0041] like Figure 2As shown, the rotating member 300 in this embodiment also includes a driving part 220, which is used to receive the electromagnetic force generated by the tripping device 100 and drive the first collision part 21a and the first protrusion 11a to collide by adsorption (that is, the oil cup 104 in the tripping device 100 adsorbs the driving part 220). In one possible implementation, the rotating member 300 is rotatable about a fixed shaft 400 (i.e., the rotating member 300 is rotatably disposed on the housing of the circuit breaker), the first collision portion 21a and the second collision portion 21b are on one side of the fixed shaft 400, and the electromagnetic force provided by the tripping device 100 acts on the other side of the fixed shaft 400. The tripping device 100 provides an electromagnetic force to attract the rotating member 300, thereby driving the rotating member 300 to rotate about the fixed shaft 400 so that the first collision portion 21a on the other side of the fixed shaft 400 rotates and collides with the first protrusion 11a. Thereafter, the rotating member 300 continues to rotate so that the second collision portion 21b collides with the second protrusion 11b.

[0042] In one possible implementation, Figure 5-6 As shown, the opening actuator 200 includes: a main shaft 10, a first transmission member 11, the first transmission member 11 can rotate around the main shaft 10, the opening actuator 200 also includes 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 can be separately formed and then fixedly connected by riveting, threading, etc., the first transmission member 11 is provided with a first abutting surface 110, and the transmission part 13 is provided with a second abutting surface 120 (as shown in FIG. Figure 5 As shown, Figure 6 For the general Figure 5 (a figure in which part of the second transmission member 12 except the transmission part 13 is hidden), a first electrical contact 121 is provided at the other end of the second transmission member 12, and the first electrical contact 121 cooperates with the second electrical contact 122 provided in the circuit breaker where the opening actuator 200 is located to realize the disconnection and connection of the circuit. Specifically, when the first electrical contact 121 is in contact with the second electrical contact 122, the circuit is connected and the circuit breaker is in the closed state; when the first electrical contact 121 is separated from the second electrical contact 122, the circuit is disconnected and the circuit breaker is in the open state.

[0043] The second transmission member can rotate about the main shaft 10. The trip actuator 200 also includes a first elastic member 14, which can be a spring, a spring plate, etc. The elastic force of the first elastic member 14 acts on the second transmission member 12, and the elastic force of the first elastic member 14 is directed away from the second electrical contact 122. When the first abutting surface 110 and the second abutting surface 120 abut, and the first electrical contact 121 and the second electrical contact 122 are in contact, due to the force between the first abutting surface 110 and the second abutting 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 trip actuator 200 is balanced, and the first transmission member 11 and the second transmission member 12 remain relatively stationary. The position of the second electrical contact 122 is fixed, so the first electrical contact 121 and the second electrical contact 122 can maintain contact, that is, the circuit breaker remains in the closed state. When the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state (e.g. Figure 7-8 As shown, Figure 8 For the general Figure 7 (a figure in which the part of the second transmission member 12 except the transmission part 13 is hidden), since the 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, and 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 action point of the first elastic member 14 is 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 second electrical contact 122 are separated, the circuit is cut off, and the circuit breaker is opened.

[0044] like Figure 9-10 As shown, the first protrusion 11a and the second protrusion 12a are provided on the first transmission member 11, and the first transmission member 11 is further provided with a third protrusion 11c. In this way, when the rotating member 300 moves, the first collision portion 21a collides with the first protrusion 11a (as shown in FIG. Figure 8As shown), the first transmission member 11 starts to rotate, so that the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state, the distance between the first collision portion 21a and the rotation axis of the rotating member 200 is smaller than the distance between the second collision portion 21b and the rotation axis of the rotating member 200, and when the rotating member 200 rotates, the collision force of the first collision portion 21a on the first transmission member 11 is greater than the collision force of the second collision portion 21b on the first transmission member 11, and the first protrusion 11a to the main The distance from the main shaft 10 is greater than the distance from the second protrusion 11b to the main shaft 10. The impact force of the first collision part 21a on the first protrusion 11a generates a large torque to drive the first transmission member 11 to rotate, ensuring that the first abutting surface 110 and the second abutting surface 120 can be reliably separated. After the first abutting surface 110 and the second abutting surface 120 are separated, the second transmission member 12 begins 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 separate. Further, after the first collision part 21a collides with the first protrusion 11a,

[0045] The second collision portion 21b collides with the second protrusion 11b (eg Figure 9 As shown), a second collision is achieved with the first transmission member 11. At this time, due to the collision between the second collision portion 21b and the second protrusion 11b, the first abutting surface 110 and the second abutting surface 120 have been separated under the collision between the first collision portion 21a and the first protrusion 11a, and the first transmission member 11 is in a free state. The first transmission member 11 will accelerate its rotation under the action of the kinetic energy of this collision, and the third protrusion 11c provided on the first transmission member 11 will collide with the second transmission member 12. The second transmission member 12 is subjected to the elastic force of the first elastic member 14 and the collision force of the third protrusion 11c, so that the rotation speed of the second transmission member 12 is increased, the separation speed of the first electrical contact 121 and the second electrical contact 122 is accelerated, and the time for the arc generated during the separation process of the first electrical contact 121 and the second electrical contact 122 to stay between them is shortened, thereby improving the short-circuit breaking capacity of the circuit breaker and increasing the service life of the circuit breaker.

[0046] At the same time, because the distance between the first collision portion 21a and the rotation axis of the rotating member 200 is shorter than the distance between the second collision portion 21b and the rotation axis of the rotating member 200, the stroke of the second collision portion 21b is greater than the stroke of the first collision portion 21a. Therefore, the stroke of the third protrusion 11c generated by the second collision portion 21b colliding with the second protrusion 11b is greater than the stroke of the third protrusion 11c generated by the first collision portion 21a colliding with the first protrusion 11a. Compared to the rotating member 200 provided with only the first collision portion 21a, the provision of the second collision portion 21b in this embodiment enables the third protrusion 11c to move more significantly, thereby increasing the opening distance between the first electrical contact 121 and the second electrical contact 122 and improving the circuit breaker's current-limiting and interrupting effects.

[0047] In a possible implementation, in order to make the contact between the first electrical contact 121 and the second electrical contact 122 more stable, as shown in FIG. Figure 5 As shown, the second transmission member 12 includes a connecting rod 123 and a moving contact 124, and the moving contact 124 is rotatably connected to the connecting rod 123. Specifically, a rotating shaft 1230 is provided on the connecting rod 123, and the moving contact 124 is rotatably connected to the connecting rod 123 through the rotating shaft 1230. One end of the connecting rod 123 is provided with the transmission part 13, the first electrical contact 121 is provided on the moving contact 124, and a first stop surface 1231 is provided on the connecting rod 123. The moving contact 124 is provided with a stop surface 1231 that cooperates with the first stop surface 1231. The second stop surface 1241, the elastic force of the first elastic member 14 acts on the moving contact 124, and the rotating shaft 1230 is arranged between the elastic force application 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, under the elastic force of the first elastic member 14, the end of the moving contact 124 provided with the first electrical contact 121 tends to rotate toward the direction of the second electrical contact 122, so that the contact between the first electrical contact 121 and the second electrical contact 122 is more reliable. After the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state, the connecting rod 123 rotates under the elastic force of the first elastic member 14 and the force of the second electrical contact 122 on the first electrical contact 121. At the same time, the movable contact 124 rotates around the rotation axis 1230 under the elastic force of the first elastic member 14. When 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 come into contact, so that the movable contact 124 can no longer continue to rotate around the rotation axis 1230. At this time, the connecting rod 123 and the movable contact 124 rotate as a whole (as shown in FIG. Figure 10 As shown), the first electrical contact 121 and the second electrical contact 122 are separated.

[0048] In the case that the second transmission member 12 is provided with the connecting rod 123 and the moving 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 are already in contact, that is, at this time the connecting rod 123 and the moving contact 124 rotate as a whole, so that the moving contact 124 and the connecting rod 123 will not rotate relative to each other after the collision of the third protrusion 11c.

[0049] In a possible embodiment, the opening actuator 200 includes an operating device so that the opening actuator 200 supports manual opening of the circuit breaker. Manual opening of the circuit breaker refers to manually operating the components of the circuit breaker to achieve opening. Specifically, Figure 5 As shown, the opening actuator 200 further includes an operating device 16, the transmission part 13 is connected to the operating device 16, and the operating device 16 includes a closing position and an opening position (such as Figure 5 and Figure 11 As shown, Figure 5 The operating device 16 is in the closing position, Figure 10 The operating device 16 is in the opening position), when the first abutting surface 110 and the second abutting surface 120 abut, and the first electrical contact 121 and the second electrical contact 122 are in contact, the operating device 16 is in the closing position. It is worth noting that at this time, the first transmission member 11 and the second transmission member 12 remain relatively stationary, which is achieved due to the combined action of the force between the operating device 16 and the transmission part 13, the force between the first abutting surface 110 and the second abutting 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. At this time, the operating device 16 also remains relatively stationary with the first transmission member 11 and the second transmission member 12, so that the first electrical contact 121 and the second electrical contact 122 remain in contact, and the operating device 16 remains in the closing position. When the circuit breaker needs to be opened, the operating device 16 is operated to move the operating device 16 to the opening position. During the movement of the operating device 16 to the opening position, the transmission part 13 is driven to move, and the second transmission member 12 moves together with the transmission part 13, so that the first electrical contact 121 and the second electrical contact 122 are separated, thereby achieving circuit breaker opening. When the circuit breaker is opened by operating the operating device 16, the first abutting surface 110 and the second abutting surface 120 maintain an abutting state.

[0050] Specifically, if Figure 13 As shown ( Figure 13 The part of the second transmission member 11 in which the transmission part 13 is removed has been hidden), the transmission part 13 is connected to the operating device 16 through a connecting rod 136, and the two ends of the connecting rod 136 are rotatably connected to the transmission part 13 and the operating device 16 respectively. A first hole for accommodating one end of the connecting rod can be provided on the transmission part 13, and a second hole for accommodating the other end of the connecting rod can be provided on the operating device 16. The two ends of the connecting rod can rotate in the first hole and the second hole respectively. In the process of operating the operating device 16 to move to the opening position, the operating device 16 rotates around the fixed axis 161, and the connecting rod 136 follows the movement of the second hole to drive the transmission part 13 to move. At the same time, the rotation of the connecting rod 136 in the first hole and the second hole can prevent the operating device 16 from getting stuck in the process of driving the transmission part 13.

[0051] Furthermore, the opening actuator 200 provided in this embodiment also supports a closing function. Specifically, the closing function of the opening actuator 200 provided in this embodiment is achieved through the operating device 16. In order to switch the circuit breaker from the opening state to the closing state by operating the operating device 16, after the opening actuator 200 is opened, the operating device 16 will be in the opening position. Specifically, when the opening operation is achieved by operating the operating device 16, the operating device 16 will be moved to the closing position. When the opening operation is achieved by the internal drive member 15, after the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state, the transmission part 13 follows the movement of the second transmission member 12 to enable the operating device 16 to reach the opening position.

[0052] In one possible implementation, in order to enable the operating device 16 to reach the opening position faster when opening the switch, the opening actuator 200 also includes a second elastic member 17, the elastic force of the second elastic member 17 acts on the operating device 16, and the second elastic member 17 is used to assist the operating device 16 to reach the opening position after the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state. Specifically, the second elastic member 17 can be a spring, a spring plate, etc. After the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state, the elastic force direction of the second elastic member 17 is close to the opening position. In this way, in addition to the thrust of the transmission part 13, the operating device 16 also receives the elastic force of the second elastic member 17, so that the operating device 16 reaches the opening position faster. At the same time, it can be achieved that the operating device 16 can be moved to the opening position when the transmission part 13 provides a smaller thrust, and the thrust of the transmission part 13 is obtained due to the elastic force of the first elastic member 14. In this way, the first elastic member 14 can be designed to have a smaller elastic force and a smaller volume.

[0053] In one embodiment of the second elastic member 17, Figure 14 As shown, the operating device 16 rotates around the fixed axis, and an elastic force action surface 162 is provided on the operating device 16. The elastic force of the second elastic member 17 acts on the elastic force action surface 162. When the opening actuator 200 is in the closed state, the elastic force of the second elastic member 17 and the action force between the first abutting surface 110 and the second abutting surface 120, the elastic force of the first elastic member 14, and the action force between the first electrical contact 121 and the second electrical contact 122 together make the operating device 16, the first transmission member 11 and The second transmission member 12 remains balanced, and the opening actuator 200 remains in the closed state. When the first abutting surface 110 and the second abutting surface 120 are transformed from the abutting state to the disengaged state, as the second transmission member 12 drives the operating device 16 to rotate toward the opening position, the elastic force of the second elastic member 17 always acts on the elastic force action surface 162, assisting the operating device 16 to move to the opening position until the operating device 16 reaches the opening position. After the operating device 16 reaches the opening position, as shown in FIG. Figure 14As shown, the elastic force of the second elastic member 17 can also continue to act on the elastic force application surface 162, so that the operating device 16 remains in the open position. It is not difficult to see that when the operating device 16 is used to open the switch, the elastic force of the second elastic member 17 also always acts on the elastic force application surface 162, assisting the operating device 16 to reach the open position, thereby reducing the opening operating force of the operating device 16.

[0054] The trip actuator 200 includes a third elastic member 18. When the trip is achieved by the internal drive member 15, after the first abutting surface 110 and the second abutting surface 120 are converted from an abutting state to a disengaged state, the elastic force of the third elastic member 18 acts on the first transmission member 11, so that the first abutting surface 110 and the second abutting surface 120 are abutted again, thereby returning the first abutting surface 110 and the second abutting surface 120 to the closed state while maintaining the abutting state. Specifically, the third elastic member 18 is fixedly arranged. The third elastic member 18 can be fixed to the circuit breaker or to the main shaft. The third elastic member 18 can be a spring, a spring clip, etc. Figure 16 The third elastic member 18 is a spring, and 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 are in abutment with each other. When the first transmission member 11 rotates, the first abutting surface 110 and the second abutting surface 120 are converted from the abutting state to the disengaged state. The first transmission member 11 continues to rotate, and the second transmission member 12 drives the transmission part 13 to move. After the first transmission member 11 rotates to a certain angle, it contacts the third elastic member 18 and is restricted in rotation. After the second transmission member 12 rotates to a certain angle, the transmission part 13 contacts the first transmission member 11 again. The elastic force of the third elastic member 18 acts on the first transmission member 11, overcoming the friction between the first abutting surface 110 and the second abutting surface 120, so that the first abutting surface 110 and the second abutting surface 120 are in abutment with each other again (as shown in FIG. Figure 10-11 As shown, Figure 12 For the general Figure 11(The figure shows the second transmission member 12 with the transmission portion 13 hidden). 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 again, the third stop surface 125 contacts the limit structure provided on the circuit breaker, so that the second transmission member 12 cannot continue to rotate. The first transmission member 11, the transmission portion 13 and the second transmission member 12 remain relatively stationary again, so that the first electrical contact 121 and the second electrical contact 122 remain separated. After the first abutting surface 110 and the second abutting surface 120 abut again, the circuit breaker can be closed by operating the operating device 16. When closing the circuit breaker, the operating device 16 moves from the open position to the closed position, driving the transmission portion 13 to move. Due to the abutting force of the first abutting surface 110 and the second abutting surface 120, the first transmission member 11 rotates together with the second transmission member 12, so that the first electrical contact 121 and the second electrical contact 122 contact, thereby closing the circuit breaker. After closing, the opening actuator 200 returns to the closed state, that is, the opening actuator 200 maintains balance until the operating device 16 is operated or the first transmission member 11 rotates, so that the balance of the opening actuator 200 is broken and the opening operation is performed.

[0055] As can be seen, the integrated tripping device in this embodiment includes the tripping device 100 and the tripping actuator 200. After the tripping device 100 in the circuit breaker generates magnetic force to attract the rotating member 300, the rotating member 300 drives the tripping actuator 200 to achieve tripping. Because the first tripping device 101 and the second tripping device 102 in the tripping device 100 in this embodiment are integrated, the tripping device 100 is more compact, achieving functions such as short-circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, overtemperature protection, self-test protection, and controlled tripping without adding additional components. Furthermore, the circuit breaker can be miniaturized.

[0056] Based on the above embodiments, the present invention further provides a circuit breaker, which includes the integrated opening device described in the above embodiments.

[0057] In summary, the present invention discloses an integrated tripping device and a circuit breaker, wherein the integrated tripping device is applied to the circuit breaker, and the integrated tripping device includes a tripping device and a tripping actuator cooperating with the tripping device; the tripping device includes: the integrated tripping device includes a tripping device and a tripping actuator cooperating with the tripping device; the tripping device includes: a first tripping device for controlling the tripping actuator to perform a tripping operation when a short circuit or overload occurs in the circuit breaker; a second tripping device for driving the tripping actuator to perform a tripping operation when a leakage, overvoltage, or undervoltage fault occurs in the circuit breaker and the circuit breaker is remotely controlled to trip; the first tripping device and the second tripping device are arranged into an integrated structure. The second tripping device and the first tripping device of the present invention are integrated into one design, occupying less space, and realizing functions such as short circuit protection, overload protection, leakage protection, overvoltage protection, undervoltage protection, overtemperature protection, self-test protection, and control of tripping without increasing the number of parts.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An integrated tripping device, which is used in a circuit breaker and is characterized in that: The integrated tripping device includes a tripping device and a tripping actuator cooperating with the tripping device; the tripping device includes: a first tripping device for controlling the tripping actuator to perform a tripping operation when a short circuit or overload occurs to the circuit breaker; and a second tripping device for driving the tripping actuator to perform a tripping operation when a leakage, overvoltage, or undervoltage fault occurs to the circuit breaker, or when the circuit breaker is remotely controlled to trip; the first tripping device and the second tripping device are arranged in an integrated structure; The first tripping device includes: an electromagnetic oil damping release consisting of a frame provided on a housing; an oil cup provided on the frame; a magnetic yoke provided on the oil cup; a coil provided on the frame; and a rotating member provided on the electromagnetic oil damping release and attracted by magnetic force. The second tripping device includes: a frame provided on the housing; an oil cup provided on the frame; a magnetic yoke provided on the oil cup; a coil winding wound on the frame; and a rotating member provided at one end of the frame and magnetically attracted to the coil winding, wherein the coil winding is connected to a control module in the circuit breaker; When the first tripping device and the second tripping device are configured as an integrated structure, the frame, the oil cup, the magnetic yoke, and the rotating member in the first tripping device are shared by the frame, the oil cup, the magnetic yoke, and the rotating member in the second tripping device; the coil is disposed above the coil winding; The opening actuator is provided with a first protrusion and a second protrusion, and the rotating member is provided with a first collision part and a second collision part. When the rotating member drives the opening actuator to perform the opening operation, the first collision part first collides with the first protrusion, and the opening actuator starts to move after receiving the collision force of the first collision on the first protrusion. During the operation of the opening actuator, the second collision part collides with the second protrusion, giving kinetic energy to the opening actuator again. Under the action of the collision force of the second collision part on the second protrusion, the opening actuator accelerates its movement to achieve rapid opening.

2. The integrated tripping device according to claim 1, characterized in that: A central hole is provided in the frame, and the oil cup is provided in the central hole and connected to the magnetic yoke.

3. The integrated tripping device according to claim 1, characterized in that: The rotating member is provided on the housing of the circuit breaker and is rotatably connected to the housing. One end of the rotating member is used to be adsorbed with the oil cup, and the other end is used to cooperate with the opening actuator to drive the opening actuator to perform the opening operation.

4. The integrated tripping device according to claim 1, characterized in that: The rotating member is arranged on the housing of the circuit breaker and is rotatably connected to the housing. One end of the rotating member is used to engage with the coil winding, and the other end is used to cooperate with the opening actuator to drive the opening actuator to perform the opening operation.

5. The integrated tripping device according to claim 1, characterized in that: When the first tripping device and the second tripping device are configured as an integrated structure, the coil is disposed on one side of the coil winding, and the first tripping device and the second tripping device are arranged on the frame in a preset order.

6. A circuit breaker, characterized in that: The circuit breaker includes the integrated tripping device according to any one of claims 1 to 5.

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