Motor protector
AssigneeUbukata Industries Co., Ltd.
InventorsYuuki NAKAMURA, Kei SASAKI
Life of this patent
Estimating the term…
Abstract
A motor protector according to an embodiment includes a hermetic container, two conducting terminal pins, two fixed contact point support bodies, two fixed contact points, two movable contact points, and a thermal reaction plate. The fixed contact point support body is configured, by bending work on a plate material, to integrally include a conducting terminal pin side region, a fixed contact point side region arranged such that a space region is sandwiched therebetween and provided with a fixed contact point, and a connection region provided across the space region and connecting the conducting terminal pin side region and the fixed contact point side region. The total width dimension of the connection region is set to be smaller than the total width dimension of the space region.
Claims8
A motor protector comprising:
- a hermetic container airtightly configured to include a dome-shaped housing and a cover plate, the cover plate being provided at an end portion on an opening side of the housing;
- two conducting terminal pins, each conducting terminal pin being provided in the hermetic container so as to penetrate through the cover plate, one end portion of the conducting terminal pin being inserted inside the hermetic container, an other end portion of the conducting terminal pin being exposed to an outside of the hermetic container;
- two fixed contact point support bodies, each fixed contact point support body being provided inside the hermetic container so as to correspond to a respective one of the conducting terminal pins, one end portion of the fixed contact point support body being fixed to the one end portion of the conducting terminal pin;
- two fixed contact points, each fixed contact point being provided inside the hermetic container, the fixed contact point being provided at an end portion of a respective one of the two fixed contact point support bodies, the end portion being opposite to an end portion of the fixed contact point support body where the conducting terminal pin is provided;
- two movable contact points provided inside the hermetic container and corresponding to the two fixed contact points;
- and
- a thermal reaction plate provided inside the hermetic container, the two movable contact points being attached to the thermal reaction plate, the thermal reaction plate being configured to bring each of the movable contact points into contact with a respective one of the fixed contact points to close the two fixed contact points in a normal state where the thermal reaction plate is not in operation, and deform the movable contact point in a direction away from the respective one of the fixed contact points to open the two fixed contact points when the thermal reaction plate operates due to an ambient temperature inside the hermetic container reaching a predetermined temperature, wherein
- the fixed contact point support body is configured, by bending work on a plate material, to integrally include a conducting terminal pin side region where the conductive terminal pin is provided, a fixed contact point side region where the fixed contact point is provided, the fixed contact point side region being arranged such that a space region formed to penetrate through the fixed contact point support body is sandwiched between the conducting terminal pin side region and the fixed contact point side region, and a connection region provided across the space region and connecting the conducting terminal pin side region and the fixed contact point side region, and
- a total width dimension of the connection region is set to be smaller than a total width dimension of the space region.
Dependencies are inferred from the claim text.