Circuit breaker energy storage operating mechanism

Patent metadata

Field	Value
Publication number	US-10643801-B2
Application number	US-201615750220-A
Country	US
Kind code	B2
Filing date	Aug 2, 2016
Priority date	Aug 4, 2015
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

An energy storage operation mechanism for a circuit breaker comprises a side plate assembly, a connecting rod assembly, a cam assembly, an energy storage assembly, a rotating shaft assembly and a control assembly. A rotatable driving shaft is mounted in the side plate assembly. The connecting rod assembly and the cam assembly are mounted on the driving shaft. The energy storage assembly and the rotating shaft assembly are mounted at one side of the driving shaft, and the control assembly is mounted at the other side of the driving shaft. The connecting rod assembly is connected with the rotating shaft assembly. The cam assembly can be in contact and connection with the energy storage assembly to push the energy storage assembly to store energy. The control assembly can be connected with the connecting rod assembly and the cam assembly in a latching manner. The energy storage operation mechanism for the circuit breaker, which is provided by the present invention, is compact in structure and high in reliability.

First claim

The invention claimed is:

1. An energy storage operation mechanism for a circuit breaker, comprising a side plate assembly, a connecting rod assembly, a cam assembly, an energy storage assembly, a rotating shaft assembly and a control assembly, wherein a rotatable driving shaft is arranged in the side plate assembly; the connecting rod assembly and the cam assembly are arranged on the driving shaft; the energy storage assembly and the rotating shaft assembly are arranged at one side of the driving shaft, and the control assembly is arranged at the other side of the driving shaft; the connecting rod assembly is connected with the rotating shaft assembly; the cam assembly can be in contact and connection with the energy storage assembly to push the energy storage assembly to store energy; the control assembly can be connected with the connecting rod assembly and the cam assembly in a latching manner; the energy storage operation mechanism for the circuit breaker is connected with the circuit breaker through the side plate assembly; the storage assembly comprises the energy storage lever and an energy storage spring which is connected with the energy storage lever; one end of the energy storage spring is mounted at one side of the side plate assembly, which is connected with the circuit breaker, and the other end of the energy storage spring is connected with one end of the energy storage lever.

2. The energy storage operation mechanism for the circuit breaker according to claim 1 , wherein the connecting rod assembly is connected with the rotating shaft assembly; the cam assembly can be in contact and connection with the energy storage assembly to push the energy storage assembly to store energy; the energy storage assembly can drive the rotating shaft assembly by the connecting rod assembly to realize a switching-on operation while releasing energy; the control assembly can be connected with the connecting rod assembly and the cam assembly in a latching manner; the control assembly and an interlocking assembly are connected in a driving manner to make the energy storage assembly release energy via the cam assembly to finish the switching-on operation; the rotating shaft assembly resets by tripping the control assembly from the connecting rod assembly to finish a switching-off action.

3. The energy storage operation mechanism for the circuit breaker according to claim 1 , further comprising the interlocking assembly which is connected with the control assembly in a driving manner; the control assembly comprises a switching-off half-shaft, a switching-off latch, a switching-on half-shaft, a switching-on latch, a switching-on button and a switching-off button; the switching-on latch can be connected with the cam assembly; the switching-off latch can be connected with the connecting rod assembly; the interlocking assembly comprises a switching-on guide rod and a switching-off guide rod; the switching-on button, a driving guide rod, the switching-on guide rod, the switching-on half-shaft and the switching-on latch are connected in sequence in a driving manner to finish a switching-on operation of the energy storage operation mechanism; the switching-off button, the switching-off guide rod, the switching-off half-shaft and the switching-off latch are connected in sequence in a driving manner to finish a switching-off operation of the energy storage operation mechanism.

4. The energy storage operation mechanism for the circuit breaker according to claim 2 , wherein in a switching-off energy storage state, a driving shaft is rotated to make the cam assembly to push an energy storage lever of the energy storage assembly in a rotating process, such that the energy storage assembly stores energy, and meanwhile, the switching-on latch of the control assembly pushes the cam assembly to further finish energy storage when the cam assembly rotates in place; the energy storage lever no longer extrudes the connecting rod assembly, and the rotating shaft assembly rotates to make the end part of the switching-off latch of the control assembly slide into a U-shaped groove of the connecting rod assembly, such that the energy storage operation mechanism of the circuit breaker is converted into the switching-off energy storage state; in the switching-off energy storage state, the control assembly drives the switching-on half-shaft by the switching-on guide rod of the interlocking assembly to enable the switching-on latch to be tripped from the cam assembly, the energy storage assembly releases energy and hits against the connecting rod assembly to pull the rotating shaft assembly to finish the switching-on operation; in addition, the end part of the switching-off latch pushes the U-shaped groove to stop the rotating shaft assembly from rotating and resetting, such that the energy storage operation mechanism for the circuit breaker is converted into a switching-on energy release state; in the switching-on energy release state, the control assembly drives the switching-off half-shaft by the switching-off guide rod of the interlocking assembly to enable the end part of the switching-off latch to be separated from the U-shaped groove, and further no longer stop the connecting rod assembly from resetting; the connecting rod assembly drives the rotating shaft assembly to rotate to finish a switching-off operation under a restoring force of main tension springs, such that the energy storage operation mechanism for the circuit breaker is converted into the switching-off energy release state; in the switching-on energy release state, the driving shaft is rotated to make the cam assembly jack the energy storage lever of the energy storage assembly in a rotating process, such that the energy storage assembly stores energy; meanwhile, the switching-on latch of the control assembly pushes the cam assembly when the cam assembly rotates in place, to further finish the energy storage conversion to the switching-on energy storage state.

5. The energy storage operation mechanism for the circuit breaker according to claim 1 , wherein the connecting rod assembly comprises a jump pin, a first connecting rod and a second connecting rod which are connected in sequence; the jump pin is mounted on the driving shaft and is connected with the control assembly in a latching manner; the end part of the second connecting rod is connected with the rotating shaft assembly in a driving manner; the first connecting rod can be in contact and connection with the energy storage assembly arranged above the first connecting rod; the energy storage assembly acts on the first connecting rod while releasing energy, such that the connecting rod assembly drives the rotating shaft assembly to realize the switching-on operation; the jump pin is mounted on the driving shaft via a jump pin mounting hole in the middle of the jump pin; a jump pin hook for mounting a jump pin spring and the U-shaped groove connected with the control assembly in a latching manner are arranged at two sides of the jump pin respectively; the jump pin is further provided with a jump pin connecting end which is rotatably connected with the corresponding end part of the first connecting rod.

6. The energy storage operation mechanism for the circuit breaker according to claim 5 , wherein the first connecting rod comprises two first connecting rod mounting sheets which are arranged side by side; the second connecting rod comprises two second connecting rod mounting sheets which are mounted side by side, wherein the end part of each second connecting rod mounting sheet is correspondingly provided with a connecting rod driving hole which can be connected with the rotating shaft assembly of the circuit breaker; the corresponding end parts of the two first connecting rod mounting sheets and the two second connecting rod mounting sheets

Assignees

• Zhejiang Chint Electrics Co Ltd
• Seari Electric Technology Co Ltd

Inventors

• Pan Binhua
• Sun Jisheng

Classifications

• H01H9/24

  for interlocking two or more parts of the mechanism for operating contacts · CPC title

• H01H2235/004

  Two parallel coil springs · CPC title

• H01H3/3015 Primary

  using cam devices · CPC title

• H01H3/30

  using spring motor · CPC title

• H01H3/46

  using rod or lever linkage, e.g. toggle · CPC title