Electromagnetic relay
AssigneeDenso Corporation
InventorEiji Nakagawa
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay comprises a coil generating magnetic force when power is distributed, a contact point part opened and closed by the magnetic force, and a fuse functional part having a conductor wired electrically in series with the contact point part and disconnected when predetermined heat quantity is received, and the fuse functional part is disposed at a position which receives arc heat generated in the contact point part when switching the contact point part from conduction state to cut-off state. Thereby, a small electromagnetic relay which enables interruption of current in all current value range can be provided.
Claims5
An electromagnetic relay comprising:
- a coil generating magnetic force when power is distributed;
- a contact point part opened and closed by the magnetic force;
- and
- a fuse functional part having a conductor wired electrically in series with the contact point part and disconnected when a predetermined heat quantity is received, the fuse functional part being disposed at a position which receives arc heat generated in the contact point part when switching the contact point part from conduction state to cut-off state.
The electromagnetic relay according to claim further comprising:
- a pair of fixed holders fixed to a main body and holding a pair of fixed contact points;
- and
- a movable holder holding in a short-circuited state a pair of movable contact points disposed oppositely to the pair of fixed contact points,
- wherein:
- the contact point part is composed of the pair of fixed contact points and the pair of movable contact points;
- and
- the fuse functional part constitutes a part of the movable holder.
Dependencies are inferred from the claim text.