Sealed contact device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9552948-B2
Application number	US-201414426657-A
Country	US
Kind code	B2
Filing date	Aug 8, 2014
Priority date	Mar 14, 2014
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A sealed contact device having a small number of components and high productivity. In the sealed contact device a ring-shaped flange portion extending laterally from a lower opening edge part of a metallic case is welded and integrated with an upper surface of a plate-shaped yoke to form an internal space and a stationary contact and a moving contact are opposed to each other in the internal space so as to enable approach/separation. A ring-shaped projection provided along a lower surface of the ring-shaped flange portion is integrated with the upper surface of the plate-shaped yoke by resistance welding.

First claim

The invention claimed is:

1. A sealed contact device in which a ring-shaped flange portion extending laterally from a lower opening edge part of a metallic case is welded and integrated with an upper surface of a plate-shaped yoke to form an internal space and a stationary contact and a moving contact are opposed to each other in the internal space so as to enable approach/separation,
wherein a ring-shaped projection provided along a lower surface of the ring-shaped flange portion is integrated with the upper surface of the plate-shaped yoke by resistance welding.

2. The sealed contact device according to claim 1 , wherein the ring-shaped projection is formed by a beating process in two directions.

3. The sealed contact device according to claim 1 , wherein the ring-shaped projection is formed by a knocking process.

4. The sealed contact device according to claim 1 , wherein the ring-shaped projection which does not come in contact with a cut-out portion disposed on an outer peripheral edge part of the ring-shaped flange portion is provided.

5. The sealed contact device according to claim 4 , wherein the ring-shaped projections provided on two adjacent sides of the ring-shaped flange portion are coupled like a circular arc in a region provided with the cut-out portion.

6. The sealed contact device according to claim 1 , wherein a surface provided with the ring-shaped projection of the ring-shaped flange portion and a surface on an opposite side have inclination angles of the ring-shaped flange portion to the plate-shaped yoke determined in such a manner that the plate-shaped yoke and the metallic case do not come in contact with each other in a place other than the ring-shaped projection.

7. A method of manufacturing a sealed contact device in which a ring-shaped flange portion extending laterally from a lower opening edge part of a metallic case is welded and integrated with an upper surface of a plate-shaped yoke to form an internal space and a stationary contact and a moving contact are opposed to each other in the internal space so as to enable approach/separation,
wherein a ring-shaped projection provided along a lower surface of the ring-shaped flange portion is integrated with the upper surface of the plate-shaped yoke by resistance welding.

Assignees

• Omron Tateisi Electronics Co

Inventors

• Shima Hiromi
• Mori Masaki
• Okamoto Takuma

Classifications

• H01H50/026

  Details concerning isolation between driving and switching circuit · CPC title

• H01H49/00

  Apparatus or processes specially adapted to the manufacture of relays or parts thereof · CPC title

• H01H51/065

  Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles (details H01H50/20) · CPC title

• H01H50/548

  for miniaturised relays · CPC title

• H01H50/023 Primary

  Details concerning sealing, e.g. sealing casing with resin · CPC title