Disconnector and manufacturing method

Patent metadata

Field	Value
Publication number	US-10515772-B2
Application number	US-201815911855-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Aug 5, 2016
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

A disconnector and a method for manufacturing the disconnector are disclosed in the present application. The disconnector includes conductive arms pivotally coupled with each other, and finger contacts. The finger contacts have two opposite ends and an elastic portion between the two opposite ends, each of the finger contacts being fixed to the respective conductive arm by fasteners at the two opposite ends such that the elastic portion presses against the conductive arm. In response to the conductive arms being pivoted toward each other and clamping an electrical contact hanged at a bus-bar above the disconnector, the conductive arms are electrically coupled with the electrical contact via the respective finger contacts. A method of manufacturing a disconnector is also disclosed.

First claim

What is claimed is:

1. A disconnector comprising:
conductive arms pivotally coupled with each other; and
finger contacts having two opposite ends and an elastic portion between the two opposite ends, each of the finger contacts being fixed to a respective conductive arm by fasteners at the two opposite ends such that the elastic portion presses against the conductive arm,
wherein in response to the conductive arms being pivoted toward each other and clamping an electrical contact hanged at a bus-bar above the disconnector, the conductive arms are electrically coupled with the electrical contact via a respective finger contact of the finger contacts; and
wherein the elastic portion is larger in thickness than the two opposite ends, and the thickness gradually decreases towards the two opposite ends.

2. The disconnector according to claim 1 , wherein the finger contacts are arc bars having an outer surface for pressing against the conductive arm and an inner surface located opposite to the outer surface, the outer surface being larger in radius than the inner surface.

3. The disconnector according to claim 1 , wherein the finger contacts are elongated bars, and the elastic portion is a pre-bended portion on the respective finger contact.

4. The disconnector according to claim 3 , wherein the pre-bended portion has a convex side for pressing against the conductive arm and a concave side opposite to the convex side.

5. The disconnector according to claim 1 , wherein the fasteners are nuts adapted to be fixed onto bolts on the conductive arms.

6. The disconnector according to claim 1 , wherein the conductive arms are made of aluminum alloy, and outer surfaces of the conductive arms are electrically conductive.

7. The disconnector according to claim 1 , wherein each of the finger contacts is made of copper.

8. The disconnector according to claim 7 , wherein a layer of silver is coated on each of the finger contacts.

9. The disconnector according to claim 1 , wherein the fasteners are nuts adapted to be fixed onto bolts on the conductive arms;
wherein the conductive arms are made of aluminum alloy, and outer surfaces of the conductive arms are electrically conductive;
wherein each of the finger contacts is made of copper.

10. A method of manufacturing a disconnector, comprising:
providing conductive arms;
for each of the conductive arms, fixing a finger contact having two opposite ends and an elastic portion between the two opposite ends to a respective conductive arm by fasteners at the two opposite ends, such that the elastic portion presses against the conductive arm;
pivotally coupling the conductive arms with each other, such that in response to the conductive arms being pivoted toward each other and clamping an electrical contact hanged at a bus-bar above the disconnector, the conductive arms are electrically coupled with the electrical contact via a respective finger contact of the finger contacts; and
providing the elastic portion larger in thickness than the two opposite ends, the thickness gradually decreasing towards the two opposite ends.

11. The method according to claim 10 , further comprising:
providing the finger contacts as arc bars having an outer surface for pressing against the conductive arm and an inner surface located opposite to the outer surface, the outer surface being larger in radius than the inner surface.

12. The method according to claim 10 , further comprising:
providing the finger contacts as elongated bars, in which the elastic portion is a pre-bended portion on the respective finger contact.

13. The method according to claim 12 , further comprising:
providing a convex side for pressing against the conductive arm and a concave side opposite to the convex side on the pre-bended portion.

14. The method according to claim 10 , further comprising:
providing nuts as the fastener, wherein the each of the nuts is adapted to be fixed onto a bolt on the respective conductive arm.

15. The method according to claim 10 , further comprising:
providing nuts as the fastener, wherein the each of the nuts is adapted to be fixed onto a bolt on the respective conductive arm;
wherein each of the finger contacts is made of copper;
wherein a layer of silver is coated on each of the finger contacts.

Assignees

• Abb Schweiz Ag

Inventors

• Liu Xuan
• Chen Rui
• Yan Jiaquan
• Lv Zhangang

Classifications

• H01H11/04

  of switch contacts · CPC title

• H01H31/36 Primary

  Contact moved by pantograph · CPC title

• H01H31/026

  Movable parts and contacts mounted thereon · CPC title

• H01H2201/024

  precious · CPC title