| 摘要 |
A thermo-element for a thermostat device includes an element assembly and is configured in such a manner that the thermo-element has a simple structure which allows the thermo-element to be easily assembled and to be small-sized and lightweight and that the thermo-element has excellent properties of durability, wear resistance, etc. A thermo-element (21) having incorporated in a case (31) a heat expansion body (32) which expands and contracts according to a change in temperature comprises: a piston (33) disposed along the axis direction within the case, having an inner end exposed to the inside of the heat expansion body, protruding outward from the opening on one end side of the case, and advancing and receding as the heat expansion body expands and contracts; a guide member (34) which is disposed within the case by being inserted from the opening on said side of the case and slidably holds the piston; and a poppet-like first valve element (poppet-like member) (22) fitted to an outside portion of the case, said outside portion being that which is located near the opening on said side of the case, and opening and closing a fluid flow path. A fit-in section (41) of the first valve element, said fit-in section being that which is fitted to the outside portion of the case, and insertion sections (42, 43) of the guide member which are inserted within the case are arranged so as to be positionally displaced from each other in the axis direction and radial direction of the case. |
