Title:
METHOD FOR FIXING THERMOELEMENT CASE AND STRUCTURE THEREOF
Document Type and Number:
Japanese Patent JP3185186
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To prevent the set position of a piston from being changed so that a stroke shortage is never caused by setting the volume of a sealing material larger than the capacity of an insert groove, providing a protruding clearance for the sealing material on the inner side from the insert groove of them fitting surface between an upper case and a lower case, and fixing the upper case to the lower case by caulking.
SOLUTION: A case body 1 is divided into an upper case 2 and a lower case 3, an insert groove for an O-ring 4 of sealing material, or an O-ring groove 11 is formed on the fitting surface between the upper case 2 and the lower case 3. The volume of the O-ring 4 is set larger than the capacity of the O-ring groove 11, a clearance α for protruding is provided on the inner side from the O-ring groove 11 of the fitting surface A-A between the upper case 2 and the lower case 3, and the upper case 2 and the lower case 3 are fixed together by caulking. Thus, since an expansion body 6 can not be protruded into the O-ring groove 11, the capacity of an expansion body chamber 5 is constant, so that the set position of a piston is never changed, and a stroke shortage is thus never caused.
Inventors:
Takahashi, Masanori
Tanabe, Koji
Tanabe, Koji
Application Number:
JP1996000023513
Publication Date:
May 11, 2001
Filing Date:
February 09, 1996
Export Citation:
Assignee:
NIPPON THERMOSTAT KK
International Classes:
G01K5/44; F01P7/16; F02M1/10; G01K5/00; F01P7/14; F02M1/00; (IPC1-7): G01K5/44