Miniature circuit breaker

Patent metadata

Field	Value
Publication number	US-11842874-B2
Application number	US-201917418330-A
Country	US
Kind code	B2
Filing date	Dec 24, 2019
Priority date	Dec 28, 2018
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A miniature circuit breaker, which includes a circuit breaker housing, a button mechanism, and an indicating apparatus. The circuit breaker housing includes an indicating hole arranged in one side thereof, the button mechanism is in sliding fit with the circuit breaker housing, the indicating apparatus is in driving fit with the button mechanism, and when the button mechanism is pressed to switch on the miniature circuit breaker, the button mechanism drives the indicating apparatus to shield the indicating hole. The indicating apparatus thereof may indicate a switching-on state of the circuit breaker when the circuit breaker is switched on, thus improving a safety of electricity consumption.

First claim

The invention claimed is:

1. A miniature circuit breaker, comprising:
a circuit breaker housing,
a button mechanism, and
an indicating apparatus,
wherein the circuit breaker housing comprises an indicating hole arranged in one side thereof, the button mechanism is in sliding fit with the circuit breaker housing, the indicating apparatus is in driving fit with the button mechanism, and when the button mechanism is pressed to switch on the miniature circuit breaker, the button mechanism drives the indicating apparatus to shield the indicating hole;
wherein the circuit breaker housing comprises at least one wire insertion hole and at least one wire removal hole which are arranged in one side thereof, the at least one wire insertion hole is matched with the at least one wire removal hole for use, the button mechanism, the at least one wire removal hole, and the at least one wire insertion hole are located at a same end of the circuit breaker housing, and when the button mechanism is pressed to switch on the miniature circuit breaker, the button mechanism drives the indicating apparatus to shield the at least one wire removal hole, so as to use the at least one wire removal hole as the indicating hole.

2. The miniature circuit breaker according to claim 1 , wherein the indicating apparatus comprises at least one baffle and a linkage, one end of the linkage is drivingly connected with the button mechanism, another end of the linkage is in driving fit with the at least one baffle, the at least one baffle is in sliding fit with the circuit breaker housing, and when the button mechanism is pressed to switch on the miniature circuit breaker, the button mechanism drives the at least one baffle to move to the at least one wire removal hole through the linkage and shield the at least one wire removal hole.

3. The miniature circuit breaker according to claim 2 , further comprising an operating mechanism, a moving contact, and a static contact, wherein the button mechanism comprises a button body and a first connecting rod, two ends of the first connecting rod are respectively connected with the button body and the operating mechanism, and one end of the two ends of the first connecting rod passes through the button body to be in driving fit with the linkage; and when the button mechanism is pressed, the button mechanism drives the operating mechanism to perform a switching-on operation through the first connecting rod, so that the moving contact is connected with the static contact, and meanwhile, the button mechanism drives the linkage through the first connecting rod, so that the linkage drives the at least one baffle to move to the at least one wire removal hole and shield the at least one wire removal hole.

4. The miniature circuit breaker according to claim 2 , wherein the circuit breaker housing comprises a sliding cavity arranged inside the at least one wire removal hole, and the at least one baffle moves in the sliding cavity to shield the at least one wire removal hole or leave the at least one wire removal hole.

5. The miniature circuit breaker according to claim 2 , wherein a middle portion of the linkage is pivotally arranged on the circuit breaker housing, the linkage comprises a linkage driven arm, and a linkage driving arm, a middle portion of the linkage driven arm is provided with a linkage driven arm slot, the linkage driving arm is provided with a linkage driving column, and one end of the at least one baffle which is in driving fit with the linkage is provided with a baffle driven end slot; and the button mechanism comprises a button driving column, the button driving column is drivingly connected with the linkage driven arm slot, and the linkage driving column is drivingly connected with the baffle driven end slot.

6. The miniature circuit breaker according to claim 2 , wherein the the at least one wire insertion hole and the at least one wire removal hole comprises two wire insertion holes and two wire removal holes which are arranged in the one side thereof, and the two wire removal holes are correspondingly matched with the two wire insertion holes respectively; the indicating apparatus comprises a first baffle, a second baffle, the linkage, and a second transmission rod, the first baffle and the second baffle are correspondingly matched with the two wire removal holes respectively, one end of the first baffle is drivingly connected with the linkage, another end of the first baffle is drivingly connected with one end of the second transmission rod, another end of the second transmission rod is drivingly connected with the second baffle, and a middle portion of the second transmission rod is pivotally arranged on the circuit breaker housing; and the button mechanism is pressed to switch on the miniature circuit breaker, the button mechanism drives the first baffle to move to one of the two wire removal holes through the linkage and shield the one of the two wire removal holes, and the first baffle drives the second baffle to move to the other of the two wire removal holes through the second transmission rod and shield the other of the two wire removal holes.

7. The miniature circuit breaker according to claim 6 , wherein the circuit breaker housing further comprises a first sliding cavity and a second sliding cavity, the first sliding cavity is arranged on one side of one of the two wire insertion holes and is close to the button mechanism, the first baffle is slidably arranged in the first sliding cavity, the second sliding cavity is arranged on one side of the other of the two wire insertion holes and is far away from the button mechanism, the second baffle is slidably arranged in the second sliding cavity, the first sliding cavity is communicated with the second sliding cavity, the second transmission rod is rotatably arranged at a communication place between the first sliding cavity and the second sliding cavity, the two ends of the second transmission rod are respectively located in the first sliding cavity and the second sliding cavity, and the two ends of the second transmission rod are drivingly connected with the first baffle and the second baffle respectively.

8. The miniature circuit breaker according to claim 6 , wherein the first baffle comprises a first baffle driven end, a first baffle connecting arm, and a first baffle body, two ends of the first baffle connecting arm are respectively connected with the first baffle driven end and the first baffle body, one side of the first baffle driven end is provided with a first baffle driven end slot, the first baffle driven end slot is drivingly connected with the linkage, and a lower side of the first baffle body is provided with a first baffle body slot; the second baffle comprises a second baffle body and a second baffle body slot arranged on a lower side of the second baffle body; and the second transmission rod comprises a second transmission rod trunk, a second transmission rod driven end, and a second transmission rod driving end, the second transmission rod trunk is pivotally arranged on the circuit breaker housing, the second transmission rod driven end is drivingly connected with the first baffle body slot, and the second transmission rod driving end is drivingly connected with the second baffle body slot.

9. The miniature circuit breaker according to claim 1 , further comprising an outlet end, wherein the outlet end comprises a conductive plate and an elastic member, the conductive plate is fixedly arranged on the circuit breaker housing, the elastic member comprises an elastic member fixed end and an elastic member wire pressing end, the elastic member fixed end is fixedly arranged on the circuit breaker housing, the elastic member wire pressing end is in elastic contact with the co

Assignees

• Zhejiang Chint Electrics Co Ltd

Inventors

• Lu Kejun
• Gu Xiangyi

Classifications

• H01H71/58 Primary

  actuated by push-button, pull-knob, or slide · CPC title

• H01H9/20

  Interlocking, locking, or latching mechanisms · CPC title

• H01H71/0207

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

• H01H71/1009

  Interconnected mechanisms (H01H71/1045 takes precedence; operated by excess current and other electrical conditions H01H83/20) · CPC title

• H01H13/568 Primary

  the contact also returning by some external action, e.g. interlocking, protection, remote control · CPC title