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US RE49,236 E1Granted
Contact device and electromagnetic relay
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKoji Yokoyama, Satoshi Sakai
Life of this patent
Estimating the term…
Abstract
A contact device includes a pair of fixed contacts, a movable contactor, a contactor holder, a movable shaft, and a base. The pair of fixed contacts are aligned in a first direction. The movable contactor comes into or out of contact with the pair of fixed contacts in a second direction orthogonal to the first direction. The contactor holder holds the movable contactor. The movable shaft moves the contactor holder in the second direction so that the movable contactor comes into or out of contact with the fixed contacts. The base accommodates the fixed contacts, the movable contactor, and the contactor holder. The base has a projection projecting from a position opposing the contactor holder in a third direction orthogonal to both the first and second directions.
Claims25
A contact device An electromagnetic relay comprising:
- a pair of fixed contacts aligned in a first direction;
- a movable contactor configured to come that comes into or out of contact with the pair of fixed contacts by a movement in a second direction orthogonal to the first direction;
- a contactor holder that holds the movable contactor;
- a movable shaft which that moves the contactor holder in the second direction so that the movable contactor comes into or out of contact with the pair of fixed contacts and twists about the movable shaft;
- and
- a base that case that comprises a plurality of wall portions and a planar surface that covers upper edges of the wall portions on one end of the case while leaving its other end open to form an open bottom box,
- wherein the case accommodates the pair of fixed contacts, the movable contactor, and the contactor holder,
- wherein the base having case includes a projection projecting from a position opposing the contactor holder first protrusion that projects from one of the wall portions towards interior of the case in a third direction orthogonal to both the first direction and the second direction, and
- wherein the case and the first protrusion are integrally formed from same material;
- and
- a winding that causes the movable shaft to move in the second direction depending on whether the winding is energized or not,
- wherein the contactor holder comes into contact with the projection first protrusion along the third direction when the movable contactor and the contactor holder twist around the movable shaft.
9 more elements
An electromagnetic relay, comprising:
- a pair of fixed contacts;
- a movable contactor that comes into or out of contact with the pair of fixed contacts;
- a magnetic material disposed on a surface of the movable contactor;
- a contactor holder that holds the movable contactor and the magnetic material,
- wherein the contactor holder includes side parts that are disposed to be across from each other, and
- wherein the movable contactor is provided between the side parts;
- a movable shaft that moves the contactor holder so that the movable contactor comes into or out of contact with the pair of fixed contacts and twists the contactor holder;
- a case that
- comprises a plurality of wall portions and a planar surface that covers upper edges of the wall portions on one end of the case while leaving its other end open to form an open bottom box,
- accommodates the pair of fixed contacts, the movable contactor, the contactor holder, and the magnetic material, and
- includes a first protrusion that projects from one of the wall portions towards interior of the case, wherein the case and the first protrusion are integrally formed from same material;
- and
- a winding that is disposed outside of the case and moves the movable shaft depending on whether the winding is energized or not,
- wherein each of the side parts includes:
- an upper portion facing the magnetic material, and
- two side portions extending downward from the upper portion, and
- wherein the contactor holder comes into contact with the first protrusion when the contactor holder twist around the movable shaft.
14 more elements
An electromagnetic relay, comprising:
- a case that
- comprises a plurality of wall portions and a planar surface that covers upper edges of the wall portions on one end of the case while leaving its other end open to form an open bottom box, and
- includes a first protrusion and a second protrusion that is disposed across from the first protrusion to face the first protrusion, wherein the first protrusion projects from one of the wall portions towards the second protrusion and the second protrusion project from another of the wall portions towards the first protrusion, and wherein the case, the first protrusion and the second protrusion are integrally formed from same material;
- a pair of fixed contacts disposed in the case;
- a movable contactor that
- is disposed in the case, and
- comes into or out of contact with the pair of fixed contacts;
- a magnetic material disposed on the movable contactor and between the pair of the fixed contacts, wherein the magnetic material is absent in an area between a peak of the first protrusion and a peak of the second protrusion;
- a yoke disposed in the case and under the movable contactor;
- a spring disposed in the case and under the yoke;
- and
- a contactor holder disposed in the case, and that holds the pair of fixed contacts, the movable contactor, the magnetic material, the yoke and the spring,
- wherein the contactor holder comes into and out of contact with the first protrusion or the second protrusion.
10 more elements
Dependencies are inferred from the claim text.