Contact contacting structure

Patent metadata

Field	Value
Publication number	US-2016379779-A1
Application number	US-201514968899-A
Country	US
Kind code	A1
Filing date	Dec 15, 2015
Priority date	Jun 24, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

Provided is a contact contacting structure that reliably prevents the development of arc discharge in a simple configuration regardless of the magnitude of electric energy accumulated between a pair of contacts that are connected and disconnected. An intermediate contact body disposed continuously with a first contact along a movement path of a second contact is formed from material with higher electric resistivity than the first contact in a shape such that the cross sectional area of a transverse section perpendicular to the movement path is gradually decreased in a separating direction along the movement path.

First claim

1 . A contact contacting structure comprising:
a first contact; a second contact; and an intermediate contact body electrically connected to the first contact, having a higher electric resistivity than the first contact, and continuously exposed along a movement path of the second contact for connection to or disconnection from the first contact, wherein the second contact is configured to separate from the intermediate contact body after contacting the first contact and then the intermediate contact body when moved from the first contact in a separating direction along the movement path, and the intermediate contact body has a shape such that a cross sectional area of a transverse section perpendicular to the movement path gradually decreases in the separating direction at least in a section between a proximal end electrically connected to the first contact and a distal end in the separating direction.

2 . The contact contacting structure according to claim 1 , wherein
the intermediate contact body has a truncated conical shape between the proximal end and the distal end in the separating direction with, about the axis of the movement path which is hollow, and the distal end of the truncated conical shape is disposed at a position where energy accumulated between the intermediate contact body and the second contact by a voltage between the first contact and the second contact and a current that flows when the first contact and the second contact contact each other is less than an energy that causes arc discharge.

3 . The contact contacting structure according to claim 1 , wherein the intermediate contact body is formed from ferrite having higher electric resistivity than the first contact comprising a metal or an alloy.

4 . The contact contacting structure according to claim 3 , wherein
the second contact includes a proximal end contact portion comprising a metal or an alloy, and a protective contact portion disposed away from the proximal end contact portion in the separating direction and in a protruding manner around the second contact, the protective contact portion comprising ferrite, and the protective contact portion contacts the intermediate contact body at a position along the movement path where the intermediate contact body is exposed, and the proximal end contact portion contacts the first contact at a position along the movement path where the first contact is exposed.

5 . The contact contacting structure according to claim 1 , wherein the intermediate contact body is formed from a ceramic resin having a higher electric resistivity than the first contact comprising a metal or an alloy.

6 . The contact contacting structure according to claim 1 , wherein the intermediate contact body is formed from a conductive resin having a higher electric resistivity than the first contact comprising a metal or an alloy.

7 . The contact contacting structure according to claim 1 , wherein
the second contact is a plug pin provided to a male connector, and the first contact is a socket contact provided to a female connector configured to fittingly connect to the male connector and facing a plug insertion hole guiding insertion and removal of the plug pin.

Assignees

• Smk Kk

Inventors

• Amei Toshihiro

Classifications

• H01H33/12 Primary

  Auxiliary contacts on to which the arc is transferred from the main contacts (using arcing horns H01H33/20) · CPC title

• H01R13/53 Primary

  Bases or cases for heavy duty; Bases or cases {for high voltage} with means for preventing corona or arcing · CPC title

• H01R13/10

  Sockets for co-operation with pins or blades · CPC title

• H01R2101/00

  One pole · CPC title

• H01R13/03

  characterised by the material, e.g. plating, or coating materials · CPC title