Circuit breaker

Patent metadata

Field	Value
Publication number	US-12183530-B2
Application number	US-202017918501-A
Country	US
Kind code	B2
Filing date	Dec 25, 2020
Priority date	Apr 13, 2020
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A circuit breaker with a circuit breaker housing that includes a switch-on button hole and a switch-off button hole, a button mechanism that includes a switch-on button and a switch-off button, the switch-on button including a switch-on button operating end slidably arranged in the said switch-on button hole, the switch-off button including a switch-off button operating end slidably arranged in the switch-off button hole. While the switch-on button operating end is being pressed toward the inside of the circuit breaker housing to enable the circuit breaker to switch on, the switch-off button operating end moves toward the outside of the circuit breaker housing, and while the switch-off button operating end is being pressed toward the inside of the circuit breaker housing to enable the circuit breaker to switch off, the switch-on button operating end moves toward the outside of the circuit breaker housing.

First claim

What is claimed is:

1. A circuit breaker, comprising a circuit breaker housing, and a button mechanism and an operating mechanism connected with said button mechanism, which are arranged inside said circuit breaker housing respectively; wherein said circuit breaker housing includes a switch-on button hole and a switch-off button hole all arranged thereon, said button mechanism includes a switch-on button and a switch-off button slidably arranged inside said circuit breaker housing, respectively, said switch-on button includes a switch-on button operating end arranged at one end thereof and slidably arranged in said switch-on button hole, said switch-off button includes a switch-off button operating end arranged at one end thereof and slidably arranged in said switch-off button hole; while said switch-on button operating end is being pressed toward the inside of said circuit breaker housing to drive said operating mechanism to enable the circuit breaker to switch on, said switch-off button operating end moves toward the outside of said circuit breaker housing, while said switch-off button operating end is being pressed toward the inside of said circuit breaker housing to drive said operating mechanism to enable the circuit breaker to switch off, said switch-on button operating end moves toward the outside of said circuit breaker housing:
wherein said operating mechanism includes a bar linkage, and a transmission member and a lever mechanism all pivotally arranged inside said circuit breaker housing, said bar linkage includes a switch-on connecting rod, a switch-off connecting rod and a transmission connecting rod; the reverse end of said switch-on button is drivingly connected to said transmission member through said switch-on connecting rod, the reverse end of said switch-off button is drivingly connected to said transmission member through said switch-off connecting rod, said transmission member is drivingly connected with the lever mechanism through said transmission connecting rod, and said lever mechanism is connected with a movable contact of the circuit breaker; when said switch-on button is pressed toward the inside of said circuit breaker housing to enable the circuit breaker to switch on, said switch-on button actuates said transmission member to rotate in a first direction through said switch-on connecting rod, meanwhile, the rotation of said transmission member drives said switch-off button to move toward the outside of said circuit breaker housing through said switch-off connecting rod; when said switch-off button is pressed toward the inside of said circuit breaker housing to enable the circuit breaker to switch off, said switch-off button actuates said transmission member to rotate in a second direction through said switch-off connecting rod, meanwhile, said rotation of said transmission member drives said switch-on button to move toward the outside of said circuit breaker housing through said switch-on connecting rod, said first direction and said second direction are opposite to each other.

2. The circuit breaker according to claim 1 , wherein said transmission member includes a transmission member axle hole, a first connection hole, a second connection hole and a third connection hole, said first connection hole, said second connection hole and said third connection hole are positioned at three vertices of a triangle, respectively, and said transmission member axle hole is arranged in the middle of said transmission member; said transmission member is pivotally arranged on said circuit breaker housing through its transmission member axle hole, and said transmission member is connected to said switch-on connecting rod, said switch-off connecting rod and said transmission connecting rod by means of said first connection hole, and said second connection hole and said third connection hole, respectively; said lever mechanism includes a jump buckle, a lock catch and a rotating plate pivotally arranged on said circuit breaker housing, said jumper buckle and said lock catch are locked with each other and pivotally arranged on said rotating plate, respectively, said rotating plate is connected with said movable contact of the circuit breaker, and said transmission member is drivingly connected with said jumper buckle through said transmission connecting rod.

3. The circuit breaker according to claim 1 , wherein said circuit breaker includes a first track mechanism and a second track mechanism used to respectively define the movement paths of said switch-on button and said switch-off button.

4. The circuit breaker according to claim 3 , wherein said first track mechanism includes a switch-on button track protrusion arranged on said switch-on button and a switch-on button track groove arranged on said circuit breaker housing, said switch-on button track protrusion is slidably arranged in said switch-on button track groove; said second track mechanism includes a switch-off button track groove arranged on said circuit breaker housing, and said switch-off button is slidably arranged in said switch-off button track groove.

5. The circuit breaker according to claim 3 , wherein said first track mechanism includes a switch-on button track protrusion arranged on said switch-on and a switch-on button track groove arranged on said circuit breaker housing, and said switch-on button track protrusion is slidably arranged in said switch-on button track groove; said second track mechanism includes a switch-off button track bar arranged on said switch-on button and in the length direction of said switch-on button and a switch-off button track groove arranged on said switch-off button, and said switch-off button track groove is slidably co-operated with said switch-off button track bar.

6. The circuit breaker according to claim 1 , wherein said circuit breaker further includes a locking mechanism co-operated with said button mechanism, said locking mechanism includes a first locking member with one end protruding outside said circuit breaker housing, said circuit breaker housing includes a locking member opening co-operated with said first locking member; when the circuit breaker is in the switch-off state, one end of said first locking member extends outside said circuit breaker housing from said locking member opening, said first locking member can retract into the inside of said circuit breaker housing under the affection of an external force for retraction; when the circuit breaker is in the switch-on state, said first locking member protrudes outside the circuit breaker housing, and the first locking member can not retract into the inside of said circuit breaker housing because of the limitation of said switch-on button and/or said switch-off button.

7. The circuit breaker according to claim 6 , wherein the circuit breaker further includes an unlocking mechanism drivingly connected to said first locking member; when the circuit breaker is in the switch-off state, operating said unlocking mechanism enables said first locking member to retract into the inside of said circuit breaker housing.

8. The circuit breaker according to claim 6 , wherein after retracting into the inside of said circuit breaker housing said first locking member is co-operated with said switch-on button and/or said switch-off button in a position-limit way, such that said switch-on button and/or said switch-off button enables the circuit breaker not to switch on; said switch-on button and/or said switch-off button is provided with a button limiting groove co-operated with said first locking member in a position-limit way, and said first locking member includes a first locking member limiting protrusion fitted with said button limiting groove in a position-limit way; when the circuit breaker is in the switch-on state, said

Assignees

• Zhejiang Chint Electrics Co Ltd

Inventors

• Lu Kejun
• Yang An

Classifications

• H01H71/04 Primary

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• H01H71/0207

  Mounting or assembling the different parts of the circuit breaker · CPC title

• H01H9/20

  Interlocking, locking, or latching mechanisms · CPC title

• H01H13/68

  having two operating members, one for opening and one for closing the same set of contacts (single operating member protruding from different sides of switch casing for alternate pushing upon opposite ends H01H15/22) · CPC title

• H01H2071/046

  exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators · CPC title