WATERPROOF CONSTRUCTION FOR ELECTRONIC CLINICAL THERMOMETER

摘要

PROBLEM TO BE SOLVED: To solve the difficulty of work for bonding or welding a back cover to a rear surface opening part of a case. SOLUTION: The transverse section of a case body part 1c is formed into a substantially rectangular or substantially elliptic shape. Spring guide groove 1g are formed in prescribed positions of longitudinally confronting inner walls of the shape. Inner frame upheaving springs 2c integrally formed with inner frames and having engagement parts 2a engaging with the spring guide grooves 1g of the body part 1e and free end parts 2b urged to positions lower than bottom surfaces of the inner frames 2 are formed in prescribed positions of laterally confronting outside walls of the inner frames 2. The inner frames 2 with a transparent film 3 attached on the surfaces thereof are inserted so that the engagement parts 2a of the upheaving springs 2c of the inner frames 2 can coincide with the guide grooves 1g in the body part 1e. The end parts 2b of the upheaving springs 2c formed on the inner frames 2 abut on the guide grooves 1g in the body part 1c to upheave the inner frames themselves and thus the film 3 is compressed by being put between the inner frames 2 and an inner wall surface of the body part 1e, thereby eliminating gaps. This realizes cost reduction.