Title:
THERMOSTAT
Document Type and Number:
Japanese Patent JP3928637
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To stabilize operation return temperature at the time of defrosting release in a thermostat with a defrosting push button, etc. controlling intra-chamber temperature of a refrigerator etc.
SOLUTION: This thermostat is provided with an L-shaped lever 24 operating a switch 27, a differential pin 38 inserted in a through hole of a cam 33, a rotatably journalled differential lever 37 provided with an arm which can contact the L-shaped lever 24, and an elastic body 39 having resiliency provided in an end-face part of the switch 27 facing the differential lever 37 to be able to abut on the differential lever 37 in an arrangement wherein an end part of the differential pin 38 is engaged facing an end face of the differential lever 37. When the differential lever 37 pushes up the differential pin, excessive sliding friction force does not occur. The change of the return temperature and variation can be suppressed without influences of the frictional force due to an operation. Thus, defrosting of a refrigerator cane be surely realized.
Inventors:
Nakajima, Yoshifusa
Morikawa, Yukio
Morikawa, Yukio
Application Number:
JP2004000246702
Publication Date:
March 16, 2007
Filing Date:
August 26, 2004
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H01H37/02; F25D21/06; H01H37/38; H01H37/00; F25D21/06