Relay

Patent metadata

Field	Value
Publication number	US-9905386-B2
Application number	US-201615277875-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Feb 2, 2016
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

Some embodiments of the present disclosure relate to a relay capable of preventing a chattering phenomenon, and capable of solving an unbalanced contact state occurring when contacts come in contact with each other.
The relay may include: a stationary contact having a first stationary contact and a second stationary contact; a movable contact moveable to a first position to contact the first stationary contact, and a second position to be separated from the first stationary contact; a conductive connector configured to always electrically connect the movable contact with the second stationary contact; and a driving mechanism configured to provide a driving force to the movable contact such that the movable contact is moveable to the first position or the second position.

First claim

What is claimed is:

1. A relay, comprising:
a stationary contact having a first stationary contact and a second stationary contact;
a movable contact movable to a first position to contact the first stationary contact, and a second position to be separated from the first stationary contact, the movable contact connected to the second stationary contact;
a conductive connector configured to electrically connect the movable contact
with the second stationary contact, the conductive connector having one end connected to the movable contact and another end connected to the second stationary contact;
a driving mechanism configured to provide a driving force to the movable contact
such that the movable contact is moveable to the first position or the second position, and
a permanent magnet installed around the first stationary contact, and not around the second stationary contact, and configured to protect the contacts from an arc,
wherein the movable contact is configured with a single contact.

2. The relay of claim 1 , wherein the conductive connector is configured with a flexible copper wire having one end connected to the movable contact and another end connected to the second stationary contact.

3. The relay of claim 1 , wherein the driving mechanism comprises:
a coil assembly including a coil configured to provide a driving force such that the movable contact is positioned at the first position, when the coil is magnetized;
a stationary core fixedly-installed in the coil assembly;
a shaft configured to support the movable contact in a coaxial state with the movable contact, and formed to be moveable together with the movable contact;
a contact spring having one end contacting the movable contact, such that an elastic force is provided to the movable contact in a direction that the movable contact contacts the first stationary contact; and
a movable core connected to a lower part of the shaft, and movable to a position to approach the stationary core and a position to be separated from the stationary core, according to whether the coil has been magnetized or demagnetized.

4. The relay of claim 3 , wherein the shaft is coupled to the movable contact so as to support the movable contact without looseness.

5. The relay of claim 3 , further comprising a return spring installed between the stationary core and the movable core and configured to be inserted into an inner diameter portion of one of the stationary core and the movable core, and the return spring configured to provide an elastic force to the movable core in a direction that the movable core is separated from the stationary core.

Assignees

• Lsis Co Ltd

Inventors

• Park Sanghee

Classifications

• H01H9/443 Primary

  using permanent magnets · CPC title

• H01H50/86

  Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (circuit arrangements for introducing delay H01H47/18; short-circuited conducting sleeves, bands, or discs H01H50/46) · CPC title

• H01H2235/01

  Spiral spring · CPC title

• H01H50/30

  Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature · CPC title

• H01H50/546

  for contactors having bridging contacts · CPC title