Manual operation device for low voltage switching apparatus

Patent metadata

Field	Value
Publication number	US-9966208-B2
Application number	US-201414901573-A
Country	US
Kind code	B2
Filing date	Jun 27, 2014
Priority date	Jun 28, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

The present invention discloses a manual operation device for low voltage switching apparatus. An operating handle is provided with a fixing groove. The fixing groove is matched with a second fixing plate, the second fixing plate is placed in the fixing groove. A reset torsion spring is arranged between the second fixing plate and the fixing groove. A pawl is rotatably mounted on the second fixing plate through a fixing pin, the pawl rotates about the fixing pin. One end of a first reset spring is connected to the top end of the pawl, the other end of the first reset spring is connected to the operating handle. The operating handle i mounted on a mounting shaft of an operating mechanism of the low voltage switching apparatus. A mounting plate is provided with a rotation shaft, the rotation shaft is the rotation shaft of an energy storage mechanism of the low voltage switching apparatus. The mounting shaft and the rotation shaft are not concentric. A ratchet wheel is rotatably mounted on the rotation shaft, the bottom end of the pawl is engaged with an intertooth position of the ratchet wheel. A stop detent is provided on the bottom of the mounting plate, the stop detent is rotatably mounted on the mounting plate. The top end of the stop detent is engaged with an intertooth position of the ratchet wheel. One end of a second reset spring is connected to the bottom end of the stop detent, the other end of the second reset spring is fixed on the mounting plate.

First claim

What is claimed is:

1. A manual operation device for a low voltage switching apparatus, comprising:
an operating handle ( 1 ) provided with a fixing groove ( 13 ), the fixing groove ( 13 ) being matched with a second fixing plate ( 6 ), the second fixing plate ( 6 ) being placed in the fixing groove ( 13 ), a reset torsion spring ( 2 ) being arranged between the second fixing plate ( 6 ) and the fixing groove ( 13 ): a pawl ( 5 ) being rotatably mounted on the second fixing plate ( 6 ) through a fixing pin ( 4 ), the pawl ( 5 ) rotating about the fixing pin ( 4 ); one end of a first reset spring ( 3 ) being connected to the top end of the pawl ( 5 ), an other end of the first reset spring ( 3 ) being connected to the operating handle ( 1 ); the operating handle ( 1 ) being mounted on a mounting shaft of an operating mechanism of the low voltage switching apparatus;
a mounting plate ( 8 ) provided with a rotation shaft ( 11 ), the rotation shaft ( 11 ) being the rotation shaft of an energy storage mechanism of the low voltage switching apparatus, the mounting shaft ( 6 ) and the rotation shaft ( 11 ) being not concentric; a ratchet wheel ( 7 ) being rotatably mounted on the rotation shaft ( 11 ), a bottom end of the pawl ( 5 ) being engaged with an intertooth position of the ratchet wheel ( 7 ); a stop detent ( 9 ) being provided on a bottom of the mounting plate ( 8 ), the stop detent ( 9 ) being rotatably mounted on the mounting plate ( 8 ); a top end of the stop detent ( 9 ) being engaged with an intertooth position of the ratchet wheel ( 7 ); one end of a second reset spring ( 10 ) being connected to a bottom end of the stop decent ( 9 ), an other end of the second reset spring ( 10 ) being fixed on the mounting plate ( 8 );
wherein when pulling the operating handle ( 1 ), the operating handle ( 1 ) rotates and drives the pawl ( 5 ) to move, the bottom end of the pawl ( 5 ), which is engaged with the intertooth position of the ratchet wheel ( 7 ) drives the ratchet wheel ( 7 ) to rotate about the rotation shaft ( 11 ), the ratchet wheel ( 7 ) rotates by one tooth and the bottom end of the pawl ( 5 ) slides outward along an edge of the tooth of the ratchet wheel ( 7 ), the first reset spring ( 3 ) pulls the pawl ( 5 ) to rotate about the fixing pin ( 4 ), and the bottom end of the pawl ( 5 ) enters into a next intertooth position of the ratchet wheel ( 7 ).

2. The manual operation device for a low voltage switching apparatus according to claim 1 , wherein the operating handle ( 1 ) and the second fixing plate ( 6 ) are provided with holes on corresponding positions, the mounting shaft passes through the holes on the operating handle ( 1 ) and second fixing plate ( 6 ); the operating handle ( 1 ) rotates about the mounting shaft, and the reset torsion spring ( 2 ) is set on the. mounting shaft.

3. The manual operation device for a low voltage switching apparatus according to claim 2 , wherein the mounting plate ( 8 ) is provided with a fixing component ( 12 ), the fixing component ( 12 ) defines a limit position of the operation handle ( 1 ).

4. The manual operation device for a low voltage switching apparatus according to claim 3 , wherein the ratchet wheel ( 7 ) rotates to push the stop detent ( 9 ) to rotate and make the top end of the stop detent ( 9 ) exit from the intertooth position of the ratchet wheel ( 7 ), the ratchet wheel ( 7 ) rotates by one tooth, the stop detent ( 9 ) is pulled by the second reset spring ( 10 ) and the top end of the stop detent ( 9 ) enters into a next intertooth position of the ratchet wheel ( 7 ).

5. A manual operation device for a low voltage switching apparatus, comprising;
an operating handle ( 1 ) provided with a fixing groove ( 13 ), the fixing groove ( 13 ) being matched with a second fixing plate ( 6 ), the second fixing plate ( 6 ) being placed in the fixing groove ( 13 ), a reset torsion spring ( 2 ) being arranged between the second fixing plate ( 6 ) and the fixing groove ( 13 ); a pawl ( 5 ) being rotatably mounted on the second fixing plate ( 6 ) through a fixing pin ( 4 ), the pawl ( 5 ) rotating about the fixing pin ( 4 ); one end of a first reset spring ( 3 ) being connected to the top end of the pawl ( 5 ), an other end of the first reset spring ( 3 ) being connected to the operating handle ( 1 ); the operating handle ( 1 ) being mounted on a mounting shaft of an operating mechanism of the low voltage switching apparatus;
a mounting plate ( 8 ) provided with a rotation shaft ( 11 ), the rotation shaft ( 11 ) being the rotation shaft of an energy storage mechanism of the low voltage switching apparatus, the mounting shaft ( 6 ) and the rotation shaft ( 11 ) being not concentric; a ratchet wheel ( 7 ) being rotatably mounted on the rotation shaft ( 11 ), a bottom end of the pawl ( 5 ) being engaged with an intertooth position of the ratchet wheel ( 7 ); a stop detent ( 9 ) being provided on a bottom of the mounting plate ( 8 ), the stop detent ( 9 ) being rotatably mounted on the mounting plate ( 8 ); a top end of the stop detent ( 9 ) being engaged with an intertooth position of the ratchet wheel ( 7 ); one end of a second reset spring ( 10 ) being connected to a bottom end of the stop detent ( 9 ), an other end of the second reset spring ( 10 ) being fixed on the mounting plate ( 8 );
wherein the operating handle ( 1 ) and the second fixing plate ( 6 ) are provided with holes on corresponding positions, the mounting shaft passes through the holes on the operating handle ( 1 ) and second fixing plate ( 6 ); the operating handle ( 1 ) rotates about the mounting shaft, and the reset torsion spring ( 2 ) is set on the mounting shaft;
wherein the mounting plate ( 8 ) is provided with a fixing component ( 12 ), the fixing component ( 12 ) defines the limit position of the operation handle ( 1 ).

6. The manual operation device for a low voltage switching apparatus according to claim 5 , wherein when pulling the operating handle ( 1 ), the operating handle ( 1 ) rotates and drives the pawl ( 5 ) to move, the bottom end of the pawl ( 5 ), which is engaged with the intertooth position of the ratchet wheel ( 7 ) drives the ratchet wheel ( 7 ) to rotate about the rotation shaft ( 11 ), the ratchet wheel ( 7 ) rotates by one tooth and the bottom end of the pawl ( 5 ) slides outward along an edge of the tooth of the ratchet wheel ( 7 ), the first reset spring ( 3 ) pulls the pawl ( 5 ) to rotate about the fixing pin ( 4 ), and the bottom end of the pawl ( 5 ) enters into a next intertooth position of the ratchet wheel ( 7 ).

7. The manual operation device for a low voltage switching apparatus according to claim 5 , wherein the ratchet wheel ( 7 ) rotates to push the stop detent ( 9 ) to rotate and make the top end of the stop detent ( 9 ) exit from the intertooth position of the ratchet wheel ( 7 ), the ratchet wheel ( 7 ) rotates by one tooth, the stop detent ( 9 ) is pulled by the second reset spring ( 10 ) and the top end of the stop detent ( 9 ) enters into a next intertooth position of the ratchet wheel ( 7 ).

Assignees

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

Inventors

• Zhou Mi
• Shen Di
• You Anshun
• Qu Degang
• Li Zhen

Classifications

• H01H3/04 Primary

  Levers (tumblers H01H23/14) · CPC title

• H01H21/24 Primary

  biased to return to normal position upon removal of operating force · CPC title

• H01H3/3021

  using unidirectional coupling · CPC title

• H01H71/52

  actuated by lever · CPC title

• H01H3/34

  using ratchet · CPC title