Exchange operating mechanism

Patent metadata

Field	Value
Publication number	US-9793081-B2
Application number	US-201415024320-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Sep 24, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A changeable mechanism includes a contact support, a connecting rod, a connecting shaft, a cantilever, and a changeable component. The contact support has a moving contact therein, and rotates about a shaft. The connecting rod bottom end is connected to the contact support, the connecting rod top end is connected to a cantilever through a connecting shaft. The changeable component is connected to and drives the cantilever through a main shaft, and drives the contact support to rotate through the connecting shaft and connecting rod. Rotation of the contact support makes the moving contact and static contact separate or in contact to realize opening or closing a circuit breaker. The changeable mechanism may switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that height and volume of the MCB is reduced.

First claim

What is claimed is:

1. A changeable mechanism, comprising:
a contact support ( 102 ), provided with a moving contact ( 113 ) therein, the contact support ( 102 ) rotating about a shaft ( 122 ) to make the moving contact ( 113 ) be separated from or in contact with a static contact ( 104 );
a connecting rod ( 105 ), a bottom end of the connecting rod ( 105 ) being connected to the contact support ( 102 ), a top end of the connecting rod ( 105 ) being connected to a cantilever ( 114 ) through a connecting shaft ( 106 ), wherein the connecting rod ( 105 ) has a dual-plate structure, in which two plates are connected to each other and have a gap therebetween, each plate has a rod hole ( 151 ) in a bottom, a shaft passes through the rod holes ( 151 ) so that the connecting rod ( 105 ) is rotatably connected to the contact support ( 102 ), wherein on top of each plate there is a chute, and the chute extends to an edge of a top end of the respective plate
a changeable component connected to the cantilever ( 114 ) through a main shaft ( 103 ), wherein the changeable component acts and drives the cantilever ( 114 ) to act through the main shall ( 103 ), and further drives the contact support ( 102 ) to rotate through the connecting shaft ( 106 ) and the connecting rod ( 105 ), the rotation of the contact support ( 102 ) makes the moving contact ( 113 ) and the static contact ( 104 ) to be separated from or in contact with each other so as to realize opening or closing of a circuit breaker, wherein the changeable component is a manual operation mechanism ( 101 ) or an energy storage mechanism ( 112 ).

2. The changeable mechanism according to claim 1 , wherein the two plates of the connecting rod ( 105 ) have same shape and same size, wherein on the top of each plate there is a circular hole ( 108 ), the chute ( 107 ) is connected with the circular hole ( 108 ), the width of the chute ( 107 ) is smaller than a diameter of the circular hole ( 108 ).

3. The changeable mechanism according to claim 2 , wherein the connecting shaft ( 106 ) includes a square bar ( 161 ) in a middle portion and two obround bars ( 162 ) on two sides of the square bar ( 161 ), a cross-section of each of the two obround bars is obround, a width of each of the two obround bars matches with the width of the chute ( 107 ), a length of each of the two obround bars ( 162 ) matches with the diameter of the circular hole ( 108 ), and arc surfaces on ends of each of the two obround bars couple with the circular hole ( 108 ), a width of the square bar ( 161 ) matches with the width of the gap between the two plates of the connecting rod ( 105 ).

4. The changeable mechanism according to claim 3 , wherein the top end of the connecting rod ( 105 ) is connected to the connecting shaft ( 106 ), the connecting shaft ( 106 ) rotates to make the two obround bars ( 162 ) be parallel to the chute ( 107 ) and slide along the chute ( 107 ) into a corresponding circular hole ( 108 ), the connecting shaft ( 106 ) rotates to make the obround bars ( 162 ) be not parallel to the chute ( 107 ) and the two obround bars ( 162 ) are mounted within a corresponding circular hole ( 108 ) and are able to rotate therein.

5. The changeable mechanism according to claim 4 , wherein the cantilever ( 114 ) is provided with a square groove ( 113 ) in a bottom portion and a main shaft hole ( 115 ) on a top portion, a shape and size of the square groove ( 113 ) match with a shape and size of the square bar ( 161 ) of the connecting shaft ( 106 ), the square bar ( 161 ) is secured in the square groove ( 113 ) so that the connecting shaft ( 106 ) is connected to the cantilever ( 114 ), a thickness of the cantilever ( 114 ) equals to a thickness of the square bar ( 161 ), the connecting shaft ( 106 ) is connected to the connecting rod ( 105 ), the cantilever ( 114 ) and the square bar ( 161 ) are embedded into the gap between two plates of the connecting rod ( 105 ).

6. The changeable mechanism according to claim 4 , wherein the contact support ( 102 ) rotates to make the moving contact ( 113 ) and the static contact ( 114 ) be separated from or in contact with each other, one of the two obround bars ( 162 ) of the connecting shaft ( 106 ) rotates within the circular hole ( 108 ), wherein a rotation range of the rotated obround bar ( 162 ) does not include positions that will make the rotated obround bar ( 162 ) be parallel to the chute ( 107 ).

7. The changeable mechanism according to claim 1 , wherein an action stroke of the cantilever ( 114 ) driven by the manual operation mechanism ( 101 ) through the main shaft ( 103 ), and an action stroke of the cantilever ( 114 ) driven by the energy storage mechanism ( 112 ) through the main shaft ( 103 ) are the same.

8. The changeable mechanism according to claim 7 , wherein the manual operation mechanism ( 101 ) or the energy storage mechanism ( 112 ) are mounted on a middle shell ( 110 ) of a circuit breaker base ( 111 ).

9. The changeable mechanism according to claim 8 , wherein the changeable component is the energy storage mechanism ( 112 ), and an energy storage motor is mounted on the circuit breaker base ( 111 ) and is disposed on a same side as the energy storage mechanism ( 112 ).

10. A changeable mechanism, comprising:
a contact support ( 102 ), provided with a moving contact ( 113 ) therein, the contact support ( 102 ) rotating about a shaft ( 122 ) to make the moving contact ( 113 ) be separated from or in contact with a static contact ( 104 );
a connecting rod ( 105 ), a bottom end of the connecting rod ( 105 ) being connected to the contact support ( 102 ), a top end of the connecting rod ( 105 ) being connected to a cantilever ( 114 ) through a connecting shaft ( 106 );
a changeable component connected to the cantilever ( 114 ) through a main shaft ( 103 ), wherein the changeable component acts and drives the cantilever ( 114 ) to act through the main shaft ( 103 ), and further drives the contact support ( 102 ) to rotate through the connecting shaft ( 106 ) and the connecting rod ( 105 ), the rotation of the contact support ( 102 ) makes the moving contact ( 113 ) and the static contact ( 104 ) to be separated from or in contact with each other so as to realize opening or closing of a circuit breaker, wherein the changeable component is a manual operation mechanism ( 101 ) or an energy storage mechanism ( 112 )
wherein the connecting rod ( 105 ) has a dual-plate structure, in which two plates are connected to each other and have a gap therebetween, the two plates have a same shape and a same size, each plate has a rod hole ( 151 ) in the bottom end, a shaft passes through each rod hole ( 151 ) so that the connecting rod ( 105 ) is rotatably connected to the contact support 102 , on the top of each plate of the two plates, there is a chute ( 107 ) and a circular hole ( 108 ), the chute ( 107 ) is connected with the circular hole ( 108 ) and the chute ( 107 ) extends to the edge of the top end of the plate, the width of the chute ( 107 ) is smaller than a diameter of the circular hole ( 108 ).

11. The changeable mechanism according to claim 10 , wherein the connecting shaft ( 106 ) includes a square bar ( 161 ) in a middle portion and two obround bars ( 162 ) on two sides of the square bar ( 161 ), a cross-section of each of the two obround bars is obround, a width of each of the two obround bars matches with the width of the chute ( 107 ), a length of each of the two obround bars ( 162 ) matches with the diameter of the circular hole ( 108 ), and arc surfaces on ends of each of the two obround bars couple with the circular hole ( 108 ), a width of the square bar ( 161 ) matches with the width of the gap between the two plates of the co

Assignees

• Seari Electric Technology Co Ltd
• Zhejiang Chint Electrics Co Ltd
• Zhejhiang Ching Electronics Co Ltd

Inventors

• Sun Jisheng
• Shi Zheng
• Pan Binhua

Classifications

• H01H71/1027

  comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole · CPC title

• H01H21/22

  Operating parts, e.g. handle · CPC title

• H01H71/526

  the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure · CPC title

• H01H71/528

  comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism · CPC title

• H01H71/10 Primary

  Operating or release mechanisms · CPC title