Cutter for a current-carrying member

Patent metadata

Field	Value
Publication number	US-9236208-B2
Application number	US-201113994419-A
Country	US
Kind code	B2
Filing date	Nov 28, 2011
Priority date	Dec 27, 2010
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

A cutter including a blade member ( 30 ) having an edge portion ( 31 ) for cutting a current-carrying member ( 12 ) and an insulating portion ( 32 ); a gas generator ( 35 ) that generates high-pressure gas to move the blade member ( 30 ) toward the current-carrying member ( 12 ); a receiving member ( 25 ) arranged on a side opposite to the edge portion ( 31 ) relative to the current-carrying member ( 12 ) and defining a receiving surface ( 25 b ) for receiving the current-carrying member ( 12 ) upon cutting thereof; a stopper ( 23 ) configured to restrict forward movement of the blade member ( 30 ) such that the insulating portion ( 32 ) of the blade member ( 30 ) stops, after cutting of the current-carrying member ( 12 ), at a position corresponding to a cut surface of the current-carrying member ( 12 ); and an insulating protective member ( 15 ) positioned between at least one of the blade member ( 30 ) or the receiving member ( 25 ) and the current-carrying member ( 12 ) and configured to protect a surface of the current-carrying member ( 12 ) facing the at least one of the blade member ( 30 ) or the first inner cylinder member ( 25 ) are provided.

First claim

The invention claimed is:

1. A cutter, comprising:
a blade member including an insulating portion and an edge portion for cutting a current-carrying member;
a gas generator that generates high-pressure gas to move the blade member toward the current-carrying member;
a receiving member arranged on a side opposite to the edge portion relative to the current-carrying member and defining a receiving surface for receiving the current-carrying member upon cutting thereof;
a stopper that restricts forward movement of the blade member such that the insulating portion of the blade member stops, after cutting of the current-carrying member, at a position corresponding to a cut surface of the current-carrying member; and
an insulating protective member positioned between at least one of the blade member or the receiving member and the current-carrying member, the insulating member protecting a surface of the current-carrying member facing the at least one of the blade member or the receiving member.

2. The cutter of claim 1 , wherein the protective member is provided on the current-carrying member so as to cover surfaces of the current-carrying member facing the blade member and the receiving member.

3. The cutter of claim 1 , wherein the protective member is provided on the edge portion, guide portions formed in a front end portion of the blade member so as to sandwich the current-carrying member, and the receiving member so as to cover a surface of the edge portion, inner surfaces of the guide portions, and the receiving surface of the receiving member.

4. The cutter of claim 2 , wherein the protective member is made of a material softer than the current-carrying member.

5. The cutter of claim 2 , wherein the protective member is formed in close contact with the surfaces of the current-carrying member.

6. The cutter of claim 1 , wherein the protective member is a protective film formed in a membrane.

7. The cutter of claim 3 , wherein the protective member is made of a material softer than the current-carrying member.

8. The cutter of claim 2 , wherein the protective member is a protective film formed in a membrane.

9. The cutter of claim 3 , wherein the protective member is a protective film formed in a membrane.

10. The cutter of claim 4 , wherein the protective member is a protective film formed in a membrane.

11. The cutter of claim 5 , wherein the protective member is a protective film formed in a membrane.

Assignees

• Ukon Tetsuya
• Tsuchiya Teruaki
• Okugawa Futoshi
• Daikin Ind Ltd

Inventors

• Ukon Tetsuya
• Tsuchiya Teruaki
• Okugawa Futoshi

Classifications

• H01H50/546

  for contactors having bridging contacts · CPC title

• H01H71/02

  Housings; Casings; Bases; Mountings · CPC title

• H01H39/006 Primary

  Opening by severing a conductor · CPC title

• Y10T83/8858

  Fluid pressure actuated · CPC title

• H01H89/00

  Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass · CPC title