Circuit breaker mechanism with micro-energy opening and tripping functions

Abstract

The utility model discloses a breaker mechanism with micro-energy opening and tripping functions, which comprises an opening and tripping mechanism, an output shaft, a latch shaft and an opening latch connected with the latch shaft, the opening and tripping mechanism comprises a pushing sheet, a transmission assembly, a latch push plate and an electromagnet, the pushing sheet is fixedly connected with the output shaft, the transmission assembly is fixedly connected with the latch push plate, and the electromagnet is fixedly connected with the output shaft. In the process from opening to closing of the circuit breaker mechanism, the pushing sheet rotates clockwise to drive the transmission sheet to move towards the direction of the electromagnet, the transmission sheet pushes the electromagnet core to retract, the electromagnetic spring is compressed to store energy and stays at an energy storage maintaining position, and the closing action of the mechanism and the energy storage action of the electromagnet are completed; when the electromagnet receives a microcomputer signal, the holding of micro-energy tripping can be relieved under low energy, and after the releasing, the spring releases energy and impacts the latch push plate to open the mechanism, so that the effect of driving the circuit breaker mechanism to open under low power is realized through the structure and the movement, and the circuit breaker is safe and reliable. Therefore, the microcomputer comprehensive protection device compatible with a larger range is formed.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker technology and relates to a circuit breaker mechanism that includes a micro-energy tripping function. Background Technology

[0002] Existing circuit breaker tripping electromagnets require significant power to drive the mechanism to trip, but some models of microcomputer-based integrated protection devices can only output about 100mJ of energy, which is insufficient to drive the existing tripping electromagnets, making it difficult for the mechanism to trip. Summary of the Invention

[0003] In order to overcome at least one deficiency of the prior art, this utility model provides a circuit breaker mechanism that includes a micro-energy tripping function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a circuit breaker mechanism including a micro-energy tripping function, comprising a tripping mechanism, an output shaft, a stop shaft, and a tripping stop connected to the stop shaft. The tripping mechanism includes a push plate, a transmission assembly, a stop plate push plate, and an electromagnet. The push plate is fixedly connected to the output shaft, the stop plate push plate is fixedly connected to the tripping stop, the transmission assembly includes a transmission plate, and the electromagnet core is linked to the stop plate push plate and the transmission plate respectively. The push plate is linked to the transmission plate.

[0005] Furthermore, when the electromagnet is de-energized, the electromagnet core retracts through the linkage of the push plate and the transmission plate, and the stop plate abuts against the electromagnet core, so that the circuit breaker mechanism is in the closed state. When the electromagnet is energized, it releases energy, and the opening stop moves through the linkage of the electromagnet core and the stop plate, so that the circuit breaker mechanism is in the open state.

[0006] Furthermore, the transmission assembly includes a clutch structure, which is configured as a torsion spring. The torsion spring is connected to the transmission plate, and the transmission plate is reset by the torsion spring.

[0007] Furthermore, the transmission assembly also includes a connecting piece, which is rotatably connected to the transmission piece via a first limiting pin. The connecting piece is fixedly provided with a second limiting pin, which is connected to the mechanism plate of the circuit breaker mechanism via a tension spring. The connecting piece and the mechanism plate are rotatably connected via a fixed bracket.

[0008] Furthermore, the transmission plate is fixedly provided with a first limiting block and a second limiting block, the first limiting block and the second limiting block form an active area, the second limiting pin is located in the area, and the first limiting block or the second limiting block abuts against the second limiting pin.

[0009] Furthermore, the fixed bracket is fixed with a limiting plate, which is located in the moving path of the connecting piece.

[0010] Further, the two side end faces of the transmission piece in contact with the push piece are provided with inclined surfaces, and the two side inclined surfaces are connected through an arc surface.

[0011] Further, the end face of the electromagnetic core is fixedly provided with a nut plate, the transmission piece and the latch push plate are located on the side of the nut plate away from the electromagnetic core and abut against the nut plate.

[0012] Further, the mechanism plate of the circuit breaker mechanism comprises a front mechanism plate and a rear mechanism plate, the front mechanism plate and the rear mechanism plate are arranged in front of and behind each other and are fixedly connected, the transmission assembly, the latch push plate and the electromagnetic iron are arranged on the front side of the front mechanism plate, the front mechanism plate is provided with a clearance, and the latch push plate is located in the clearance.

[0013] Further, the electromagnetic iron is fixedly connected with the front mechanism plate through an electromagnetic iron support.

[0014] In conclusion, the utility model has the advantages of:

[0015] In the process that the circuit breaker mechanism is from opening to closing, the push piece rotates clockwise, drives the transmission piece to move towards the electromagnetic iron, the transmission piece pushes the electromagnetic core to retract, the electromagnetic spring is compressed to store energy, and is kept at an energy storage position, the mechanism closing and the electromagnetic iron energy storage action are completed; when the electromagnetic iron receives a microcomputer signal, the holding of the micro-energy tripping is released under lower energy, and after the holding is released, the spring releases energy, impacts the latch push plate to make the mechanism open, through the above structure and movement, the effect that the circuit breaker mechanism is driven to open under smaller power is realized, and thus a microcomputer comprehensive protection device compatible with a larger range is formed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an installation schematic view of an opening tripping mechanism, a front mechanism plate and a rear mechanism plate of the utility model.

[0017] Figure 2 It is an installation schematic view of an opening tripping mechanism, an output shaft, a latch shaft and an opening latch of the utility model.

[0018] Figure 3 It is an installation schematic view of an electromagnetic iron, an opening latch and a reset torsional spring of the utility model.

[0019] Figure 4 It is a structure schematic view of a transmission assembly of the utility model.

[0020] Identified in the figure: opening and closing tripping mechanism 2, output shaft 11, pawl shaft 12, opening and closing pawl 13, front mechanism plate 14, rear mechanism plate 15, push piece 21, transmission assembly 22, pawl push plate 23, electromagnet 24, reset torsional spring 131, empty position 141, fixed end 211, free end 212, transmission piece 221, torsional spring 222, connecting piece 223, tension spring 224, fixed support 225, first forming plate 231, second forming plate 232, electromagnet core 241, electromagnetic spring 242, nut plate 243, electromagnet support 244, limiting plate 2251, first limiting block 2211, second limiting block 2212. DETAILED DESCRIPTION

[0021] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout pattern can also be more complex.

[0023] All directional indications (such as up, down, left, right, front, back, transverse, longitudinal, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0024] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present application may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0025] Embodiment one:

[0026] For example, Figures 1-4As shown, a circuit breaker mechanism comprising a micro-energy tripping function, comprising a tripping mechanism 2, an output shaft 11, a latch shaft 12 and a tripping latch 13 connected with the latch shaft 12, the tripping mechanism 2 comprises a push piece 21, a transmission assembly 22, a latch push plate 23 and an electromagnet 24, the push piece 21 is fixedly connected with the output shaft 11, the latch push plate 23 is fixedly connected with the tripping latch 13, the transmission assembly 22 comprises a transmission piece 221, the electromagnet core 241 of the electromagnet 24 is linked with the latch push plate 23 and the transmission piece 221 respectively, and the push piece 21 is linked with the transmission piece 221.

[0027] In the de-energized state of the electromagnet 24, the electromagnet core 241 is retracted through the linkage of the push piece 21 and the transmission piece 221, and the latch push plate 23 abuts against the electromagnet core 241, so that the circuit breaker mechanism is in a closed state;

[0028] In the energized state of the electromagnet 24, the tripping latch 13 is moved through the linkage of the electromagnet core 241 and the latch push plate 23, so that the circuit breaker mechanism is in a tripped state.

[0029] When the circuit breaker mechanism is in the tripped state, the electromagnet core 241 of the electromagnet 24 is in an extended state, in which the electromagnetic spring 242 of the electromagnet 24 is in a natural extension and contraction state, the end face of the electromagnet core 241 abuts against the latch push plate 23, and the transmission piece 221 is in an initial position, which refers to the position of the transmission piece 221 when it is in a non-working state, the transmission piece 221 abuts against the end face of the electromagnet core 241, in other embodiments, the transmission piece 221 and the electromagnet core 241 can not abut against each other, but the transmission piece 221 will push the electromagnet core 241 to retract synchronously during movement; when the circuit breaker mechanism is in the closed state, the electromagnet core 241 is in a retracted state and stays in an energy storage and holding position, the latch push plate 23 is located on the left side of the electromagnet core 241 and abuts against the electromagnet core 241. Figure 1

[0030] The circuit breaker mechanism further comprises a front mechanism plate 14 and a rear mechanism plate 15, the front mechanism plate 14 and the rear mechanism plate 15 are arranged in front of and behind each other and are fixedly connected, the output shaft 11 penetrates through the front mechanism plate 14 and the rear mechanism plate 15 and is rotatably connected with the front mechanism plate 14 and the rear mechanism plate 15 respectively, the push piece 21 is located on the front side of the front mechanism plate 14 and is fixedly connected with the output shaft 11, the two ends of the latch shaft 12 are fixedly connected with the front mechanism plate 14 and the rear mechanism plate 15, the tripping latch 13 is located between the front mechanism plate 14 and the rear mechanism plate 15, the transmission assembly 22, the latch push plate 23 and the electromagnet 24 are arranged on the front side of the front mechanism plate 14, the front mechanism plate 14 is provided with a clearance 141, the front mechanism plate 14 is communicated through the clearance 141, the latch push plate 23 is located in the clearance 141, one end of the latch push plate 23 is fixedly connected with the tripping latch 13, and the other end abuts against the electromagnet core 241. ​

[0031] The output shaft 11 is connected to the pre-set operating mechanism inside the circuit breaker mechanism. The output shaft 11 is driven by the operating mechanism to rotate clockwise during the opening and closing process, which in turn drives the push plate 21 to rotate clockwise synchronously. The structure of the operating mechanism adopts the structure set by the conventional circuit breaker mechanism. The selection is based on the circuit breaker model and has not been improved in this application. It is not limited or described here. The change of the angle of the opening stop 13 changes the opening state of the circuit breaker mechanism.

[0032] The push plate 21 includes a fixed end 211 and a free end 212. The fixed end 211 is fixedly connected to the output shaft 11. The end face of the free end 212 away from the fixed end 211 is set as an arc surface. The arc surface of the free end 212 abuts against the transmission plate 221. When the push plate 21 rotates clockwise, the free end 212 pushes the transmission plate 221 to move along the direction of the electromagnet 24. The movement of the transmission plate 221 pushes the electromagnet core 241 to retract, so that its compression spring stores energy. The electromagnet core 241 is kept in the energy storage position by the magnet built into the electromagnet 24.

[0033] The rotation of the push plate 21 during the circuit breaker opening and closing process is divided into two stages. In the first stage, the push plate 21 abuts against the transmission plate 221 and pushes the transmission plate 221 to move along the direction of the electromagnet 24. The electromagnet core 241 retracts and compresses the spring to store energy until it stops in the energy storage position. In the second stage, the push plate 21 continues to rotate, disengages from the transmission plate 221, and rotates until the circuit breaker mechanism is fully closed.

[0034] The transmission assembly 22 includes a clutch structure, which allows the transmission plate 221 to disengage from the push plate 21 and return to its initial position.

[0035] In this embodiment, the clutch structure is set as follows: Figure 3 The torsion spring 222 is connected to the transmission plate 221. During the circuit breaker mechanism's opening to closing process, when the push plate 21 is disengaged from the transmission plate 221, the transmission plate 221 resets in the direction away from the electromagnet 24 under the restoring force of the torsion spring 222. During the closing to opening process, the push plate 21 rotates counterclockwise, and the torsion spring 222 stretches and stores energy after the transmission plate 221 is pushed. When the push plate 21 is disengaged from the transmission plate 221, the transmission plate 221 resets under the restoring force of the torsion spring 222.

[0036] The transmission assembly 22 also includes a connecting piece 223, which is rotatably connected to the transmission piece 221 via a first limiting pin. The connecting piece 223 is fixedly provided with a second limiting pin, which is connected to the front mechanism plate 14 via a tension spring 224. The connecting piece 223 and the front mechanism plate 14 are rotatably connected via a fixed bracket 225.

[0037] For convenience of description, the connecting piece 223 is divided into an upper end, a middle end and a lower end along its length direction, the first limiting pin is arranged at the upper end, the second limiting pin is arranged at the middle end, and the rotating connection point of the connecting piece 223 and the fixed support 225 is arranged at the lower end.

[0038] The specific structure is as follows: as shown in Figure 3 , the torsion spring 222 is sleeved on the first limiting pin, one torsion arm of the torsion spring 222 is buckled into the transmission piece 221, and the other torsion arm abuts against the second limiting pin, as shown in Figure 1 , one end of the tension spring 224 is connected with the second limiting pin, the other end of the tension spring 224 is connected with the front mechanism plate 14, the fixed support 225 is fixedly connected with the front mechanism plate 14, and the connecting piece 223 is rotatably connected with the fixed support 225.

[0039] In order to limit the moving distance of the transmission piece 221, the end surface of the transmission piece 221 is fixedly provided with a first limiting block 2211 and a second limiting block 2212, the first limiting block 2211 and the second limiting block 2212 form an active area, the second limiting pin is arranged in the active area, in the closing process of the circuit breaker mechanism, the transmission piece 221 is driven to move by the pushing piece 21, the first limiting block 2211 abuts against the second limiting pin, until the pushing piece 21 is separated from the transmission piece 221, in the opening process of the circuit breaker mechanism, the transmission piece 221 is driven to move by the pushing piece 21, the second limiting block 2212 abuts against the second limiting pin, until the pushing piece 21 is separated from the transmission piece 221.

[0040] In order to limit the excessive movement of the connecting piece 223, the end surface of the fixed support 225 away from the electromagnet 24 is fixedly provided with a limiting plate 2251, and the limiting plate 2251 is used for limiting the further rotation of the connecting piece 223.

[0041] The transmission process of the transmission assembly 22 is as follows:

[0042] In the process of breaking to closing of the circuit breaker mechanism, the pushing piece 21 rotates clockwise and abuts against the transmission piece 221, the transmission piece 221 moves towards the electromagnet 24, the torsional spring 222 stores energy, until the first limiting block 2211 abuts against the second limiting pin, at this time the pushing piece 21 continues to push the transmission piece 221, and then drives the connecting piece 223 to move towards the electromagnet 24 synchronously, the tension spring 224 stores energy, the pushing piece 21 enters the second stage of rotation, the pushing piece 21 is separated from the transmission piece 221, the tension spring 224 and the torsional spring 222 release energy, and the transmission piece 221 and the connecting piece 223 reset; in the process of closing to breaking of the circuit breaker mechanism, the pushing piece 21 rotates counterclockwise and abuts against the transmission piece 221, the transmission piece 221 moves away from the electromagnet 24, the torsional spring 222 stores energy, until the second limiting block 2212 abuts against the second limiting pin, at this time the pushing piece 21 continues to push the transmission piece 221, and then drives the connecting piece 223 to move away from the electromagnet 24 synchronously, the tension spring 224 stores energy, until the connecting piece 223 abuts against the limiting plate 2251, the pushing piece 21 is separated from the transmission piece 221, the tension spring 224 and the torsional spring 222 release energy, and the transmission piece 221 and the connecting piece 223 reset.

[0043] Preferably, the two side end surfaces of the transmission piece 221 in contact with the pushing piece 21 are inclined surfaces, and the two side inclined surfaces are connected by an arc surface.

[0044] In this embodiment, the electromagnet 24 and the breaking latch 13 are linked through the latch pushing plate 23. Specifically, the breaking latch 13 is connected with a reset torsional spring 131, when the circuit breaker mechanism breaks, the end surface of the electromagnet core 241 abuts against the latch pushing plate 23, the reset torsional spring 131 stores energy, when the circuit breaker mechanism closes, the electromagnet core 241 retracts, the reset torsional spring 131 releases energy, and the breaking latch 13 resets under the action of the restoring force, and then drives the latch pushing plate 23 to move, the moving direction of the latch pushing plate 23 is consistent with the retracting direction of the electromagnet core 241, when the electromagnet core 241 stays at the energy storage maintaining position, the latch pushing plate 23 abuts against the end surface of the electromagnet core 241, when the circuit breaker mechanism breaks, the electromagnet 24 receives the microcomputer signal of the circuit breaker mechanism (i.e. power-on), the built-in magnet of the electromagnet 24 removes the energy storage maintaining, after removal, the electromagnet spring 242 releases energy, the electromagnet core 241 extends and hits the latch pushing plate 23, and then drives the breaking latch 13 to move away from the electromagnet 24, so that the circuit breaker mechanism breaks.

[0045] In other embodiments, the latch pushing plate 23 and the electromagnet core 241 can also not abut against each other, but under the power-on state of the electromagnet 24, the electromagnet spring 242 releases energy, the electromagnet core 241 extends and pushes the latch pushing plate 23 to break the circuit breaker.

[0046] The abutment structure between the latch push plate 23 and the end face of the electromagnetic core 241 and between the transmission plate 221 and the end face of the electromagnetic core 241 is specifically that the nut plate 243 is fixedly arranged on the end face of the electromagnetic core 241, and the transmission plate 221 and the latch push plate 23 are located on the side of the nut plate 243 away from the electromagnetic core 241 and abut against the nut plate 243.

[0047] The latch push plate 23 is in an L-shaped structure, including a first forming plate 231 arranged vertically and a second forming plate 232, the first forming plate 231 is fixedly connected with the disconnecting latch 13, the second forming plate 232 is located on the side of the nut plate 243 away from the electromagnetic core 241 and abuts against the nut plate 243, and the latch push plate 23 moves in the emptying position 141 during the opening and closing of the circuit breaker mechanism.

[0048] The electromagnetic iron 24 is fixedly connected with the front mechanism plate 14 through the electromagnetic iron support 244.

[0049] The driving process of the disconnecting mechanism 2 in the embodiment is specifically as follows:

[0050] When the circuit breaker mechanism is switched from opening to closing, the output shaft 11 is driven to rotate clockwise by the operating mechanism, the push plate 21 is synchronously rotated clockwise, the transmission plate 221 is moved along the direction of the electromagnetic iron 24, the transmission plate 221 is moved to push the electromagnetic core 241 to retract, the electromagnetic spring 242 is compressed to store energy, at the same time, the latch push plate 23 is reset under the energy releasing action of the reset torsion spring 131, the electromagnetic iron 24 stays at the energy storage and maintaining position, the latch push plate 23 abuts against the electromagnetic core 241, the push plate 21 is separated from the transmission plate 221, the push plate 21 continues to rotate to completely close the circuit breaker mechanism, and the transmission plate 221 is reset under the action of the torsion spring 222; when the circuit breaker mechanism is switched from closing to opening, the electromagnetic iron 24 receives the microcomputer signal of the circuit breaker mechanism, the energy storage and maintaining electromagnetic spring 242 is released, the electromagnetic core 241 is elongated to hit the latch push plate 23, thereby driving the disconnecting latch 13 to move away from the electromagnetic iron 24, so that the circuit breaker mechanism is opened, at the same time, the push plate 21 is counterclockwise rotated to hit the transmission plate 221, and the two are separated, and the transmission plate 221 is reset under the action of the torsion spring 222.

[0051] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. A circuit breaker mechanism comprising a micro-energy opening trip function, comprising an opening trip mechanism, an output shaft, a latch shaft, and a trip latch connected to the latch shaft, characterized in that: The opening and closing tripping mechanism comprises a pushing piece, a transmission assembly, a latch pushing plate and an electromagnet, the pushing piece is fixedly connected with an output shaft, the latch pushing plate is fixedly connected with a latch, the transmission assembly comprises a transmission piece, the electromagnet core of the electromagnet is linked with the latch pushing plate and the transmission piece respectively, and the pushing piece is linked with the transmission piece.

2. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 1 wherein: In the de-energized state of the electromagnet, the electromagnet core is retracted through the linkage of the pushing piece and the transmission piece, the latch pushing plate abuts against the electromagnet core, so that the circuit breaker mechanism is in the closing state, and the electromagnet is energized to move the latch through the linkage of the electromagnet core and the latch pushing plate, so that the circuit breaker mechanism is in the opening state.

3. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 1 wherein: The transmission assembly comprises a clutch structure, the clutch structure is a torsional spring, the torsional spring is connected with the transmission piece, and the transmission piece is reset through the torsional spring.

4. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 3 wherein: The transmission assembly further comprises a connecting piece, the connecting piece is rotationally connected with the transmission piece through a first limiting pin, the connecting piece is fixedly provided with a second limiting pin, the second limiting pin is connected with a mechanism plate of the circuit breaker mechanism through a tension spring, and the connecting piece is rotationally connected with the mechanism plate through a fixed support.

5. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 4 wherein: The transmission piece is fixedly provided with a first limiting block and a second limiting block, the first limiting block and the second limiting block form an active area, the second limiting pin is located in the area, and the first limiting block or the second limiting block abuts against the second limiting pin.

6. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 4 wherein: The fixed support is fixedly provided with a limiting plate, and the limiting plate is located in the movement path of the connecting piece.

7. A circuit breaker mechanism incorporating micro-energy trip function as defined in claim 1 wherein: The two side end faces of the transmission piece in contact with the pushing piece are inclined surfaces, and the two side inclined surfaces are connected through an arc surface.

8. A circuit breaker mechanism incorporating micro-energy trip function as defined in claim 1 wherein: The end face of the electromagnet core is fixedly provided with a nut plate, and the transmission piece and the latch pushing plate are located on the side of the nut plate away from the electromagnet core and abut against the nut plate.

9. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 4 wherein: The mechanism plate of the circuit breaker mechanism comprises a front mechanism plate and a rear mechanism plate, the front mechanism plate and the rear mechanism plate are arranged in front of and behind each other and are fixedly connected, the transmission assembly, the latch pushing plate and the electromagnet are arranged on the front side of the front mechanism plate, the front mechanism plate is provided with a clearance, and the latch pushing plate is located in the clearance.

10. A circuit breaker mechanism incorporating micro-energy trip function as claimed in claim 9 wherein: The electromagnet is fixedly connected with the front mechanism plate through an electromagnet support.

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