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. The front section of the lock core exposes the front end of the lock body, and a lock hook is installed on the front end surface of the lock body; and the public date is April 3, 2002. The patent number is ZL01243718.2, and the Chinese utility model patent named freezer lock discloses a door lock for freezers. , this kind of door lock is made up of pin, retaining ring, shift plate, lock core, lock body, compression spring, stop lock plate and key, and at least two limit slots are arranged on the inner wall of the lock body, two limit slots The groove communicates with the circumferential groove on the inner wall. The lock core is composed of a front lock core and a rear lock core. The pressure spring and the lock plate are located in the cavity of the lock core. The lock plate is composed of two intersecting parts, and its axial part It is in contact with the lock cylinder and the pressure spring, and the transverse part is in contact with the limit groove on the inner wall of the lock

[0003] However, in the technical solution of the prior art represented by the above patent documents, there are too many connecting components, the connection and installation between them are complicated, and the service life is easily affected

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