High speed closing switch

Patent metadata

Field	Value
Publication number	US-9842717-B2
Application number	US-201615144361-A
Country	US
Kind code	B2
Filing date	May 2, 2016
Priority date	May 29, 2015
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

A high speed closing switch includes a case having an interior which is hermetically closed, a ground electrode installed within the case, a high voltage electrode spaced apart from the ground electrode by a predetermined interval, a movable electrode configured to move from a first position in which the ground electrode and the high voltage electrode are not connected to a second position in which the ground electrode and the high voltage electrode are connected, a coil configured to generate electromagnetic force to cause the movable electrode to be moved from the first position to the second position, a returning rod having one end fixedly connected to the movable electrode and the other end protruding to outside of the case, and a driving device configured to drive the returning rod such that the movable electrode is moved from the second position to the first position.

First claim

What is claimed is:

1. A high speed closing switch, comprising:
a case having a hermetically closed interior;
a ground electrode installed within the case;
a high voltage electrode installed within the case and spaced apart from the ground electrode by a predetermined interval;
a movable electrode installed within the case and configured to move from a first position in which the ground electrode and the high voltage electrode are not connected to a second position in which the ground electrode and the high voltage electrode are connected;
a coil installed below the movable electrode and configured to generate electromagnetic force to cause the movable electrode to be move;
a returning rod having first end fixed to the movable electrode and a second end protruding outside the case;
a driving device installed outside the case, coupled to the second end of the returning rod, and configured to drive the returning rod such that the movable electrode is moved from the second position to the first position; and
a pipe installed in the case,
wherein the case comprises:
a body portion having an open top part to which the high voltage electrode is coupled and an open bottom;
an upper portion configured to hermetically close the open top part of the body portion; and
a lower portion configured to hermetically close the open bottom part of the body portion, and
wherein the pipe electrically connects the ground electrode to the lower portion of the case.

2. The switch of claim 1 , further comprising a sensor installed in a movement path of the returning rod and configured to sense an operation of the returning rod.

3. The switch of claim 2 , further comprising
controller configured to accumulate signals from the sensor and to count movements of the movable electrode.

4. The high speed closing switch of claim 2 , further comprising:
a counter in contact with the returning rod and configured to count movements of the movable electrode.

5. The switch of claim 4 , wherein:
the sensor is a contact sensor and is not in contact with the returning rod when the movable electrode is in the first position; and
the sensor is brought into contact with the returning rod and senses movement of the returning rod when the movable electrode is in the second position.

6. The switch of claim 5 ,
wherein the returning rod protrudes outside the lower portion of the case and further comprising a sealing member installed between the lower portion and the returning rod in order to maintain airtightness between the lower portion and the returning rod.

7. The switch of claim 6 , wherein the sealing member is at least an O-ring or a guide wear ring.

Assignees

• Lsis Co Ltd

Inventors

• Jeong Youngwoo

Classifications

• H01H9/16 Primary

  Indicators for switching condition, e.g. "on" or "off" · CPC title

• H01H9/04

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings · CPC title

• H01H9/00

  Details of switching devices, not covered by groups H01H1/00 - H01H7/00 · CPC title

• H01H71/04

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• H01H2071/046

  exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators · CPC title