Cover member and thermostat device equipped with cover member

A cover member that is detachably attached to a thermostat device, which includes

• a housing provided with a body that has an opening at one end and a groove formed so as to surround the opening and a pair of legs standing up opposing to each other at the one end of the body inside the groove,
• a gasket to be fitted in the groove,
• a valve seat formed inside the body,
• a thermo-element, one end of which is supported by the body, extending and retracting depending on the temperature,
• a valve body unseated from or seated on the valve seat in response to the extension-retraction operation of the thermo-element,
• a biasing member biasing the valve body to the valve seat side, and
• a frame being supported by the pair of legs and supporting one end of the biasing member,
• wherein
• the cover member includes a dish-shaped portion that has insertion holes inside, through which the pair of legs are to be inserted, and covers the gasket,
• and a cylindrical portion standing up from the opening edge of the insertion holes and to which the pair of legs is to be inserted thereinside, and
• wherein
• an inward-convex portion protruding inward is formed in the cylindrical portion,
• the inward-convex portion is located on the body side from the frame in a state where the cover is attached to the thermostat device, and
• the inward-convex portion comes into contact with the frame to deform elastically when the cover member is attached to or detached from the thermostat device.

A thermostat device equipped with a cover member, wherein the thermostat device and the cover member are detachably attached to each other,

• wherein
• the thermostat device comprises a housing that includes a body having an opening on one end and a groove formed so as to surround the opening and a pair of legs standing up opposing to each other from the one end of the body inside the groove, and a gasket to be fitted in the groove;
• the cover member is provided with a dish-shaped portion having insertion holes there inside through which the pair of legs are to be inserted, and capped on the gasket;
• and a cylindrical portion standing up from the opening edge of the insertion holes and inside of which the pair of legs is to be press-fitted;
• and a corrugated section is formed at a portion opposing to the legs of the cylindrical portion,
• wherein the thermostat device includes
• a valve seat formed inside of the body,
• a thermo-element whose one end is supported by the body extends and retracts depending on the temperature,
• a valve body that is unseated from or seated on the valve seat in response to the extension-retraction operation of the thermo-element,
• a biasing member that biases the valve body to the valve seat side, and
• a frame supported by the pair of legs supporting one end of the biasing member;
• and
• wherein
• an inward-convex portion protruding inward is formed inside the cylindrical portion of the cover member;
• the inward-convex portion is located at the body side inner than the frame in a state where the cover is attached to the thermostat device, and when the cover member is attached to or detached from the thermostat device, the inward-convex portion comes into contact with the frame to deform elastically.