Door lock for refrigerator

Abstract

The invention relates to a door lock, in particular to a door lock applied to the doors of refrigerators. The components of the door lock are as follows: a lock housing provided with a cylindrical cavity, both terminals of which are provided with round openings; a lock cylinder which is positioned in the cavity of the lock housing; a latch hook which is rigidly connected with one end of the lock cylinder, the other end of which is provided with a keyhole; and a key which is coupled with the keyhole. The lock cylinder consists of an active lock cylinder which can move straightly along the axial direction of the lock housing cavity and rotate, and a passive lock cylinder which can be driven to rotate by the active lock cylinder; a restoring spring is fixed between the active lock cylinder and the passive lock cylinder. A bipolar positioning device, which is used for limiting the rotation position of the active lock cylinder, is fixed in the cavity of the lock housing; the keyhole is positioned on the active lock cylinder; and the latch hook is rigidly connected with the passive lock cylinder. The invention provides the door lock applied to the doors of refrigerators, which is characterized by strong protective function, simple and compact structure, and functions of automatically ejecting the key after locking or unlocking.

Description

technical field [0001] The invention relates to a door lock, in particular to a door lock applied to a refrigerator door body Background technique [0002] Freezers are large-scale household refrigeration equipment and are widely used in every corner of society. However, because of the low height of the refrigerator, it is easy for children to climb into the refrigerator and cause injury. Therefore, the door of the general refrigerator is equipped with a door to prevent the above situation lock, wherein the disclosure date is August 8, 2001, the application number is 00110868.9, and the Chinese patent named as refrigerator door lock discloses a refrigerator door lock, comprising a lock body, a lock core, a lock hook and a spring, and the lock core on the lock core The keyhole is a through hole with a polygonal cross section. The rear section of the lock core penetrates into the axial circular through hole of the boss behind the lock body. The boss is covered with a hollow co...

AI Technical Summary

Problems solved by technology

[0002] Freezers are large-scale household refrigeration equipment and are widely used in every corner of society. However, because of the low height of the refrigerator, it is easy for children to climb into the refrigerator and cause injury. Therefore, the door of the general refrigerator is equipped with a door to prevent the above situation lock, wherein the disclosure date is August 8, 2001, the application number is 00110868.9, and the Chinese patent named as refrigerator door lock discloses a refrigerator door lock, comprising a lock body, a lock core, a lock hook and a spring, and the lock core on the lock core The keyhole is a through hole with a polygonal cross section. The rear section of the lock core penetrates into the axial circular through hole of the boss behind the lock body. The boss is covered with a hollow cover, and there is a "rivet" shaped key ejector nail inside the hollow cover There is a compression spring between the end surface of the nail cap and the inner bottom surface of the hollow cover. The nail head section is a polygonal column with the same cross-sectional shape as that of the keyhole, and penetrates into the keyhole, and the end is basically flush with the front end of the keyhole. Th

Images