CN2414139Y

CN2414139Y - Spring door lock for freezer

Info

Publication number: CN2414139Y
Application number: CN 00213493
Authority: CN
Inventors: 马瑞栋; 金葵娟; 李慎初; 黄克刚
Original assignee: Qingdao Haier Refrigerator Co; Haier Group Corp
Current assignee: Qingdao Haier Refrigerator Co; Haier Group Corp
Priority date: 2000-02-15
Filing date: 2000-02-15
Publication date: 2001-01-10
Anticipated expiration: 2010-02-15

Abstract

The utility model provides a spring door lock for a freezer. The utility model comprises a lock body, a lock core, a lock hook, and a spring. The utility model is characterized in that the cross section of a keyhole of the lock core is a polygonal through hole, the rear section of the lock core is penetrated into a circular through hole of a shaft center of a boss of the rear part of the lock body, the boss is covered with a hollow cover, a key pushing rod with a convex circular ring at the middle part is arranged in the hollow cover and the key hole, a section of outer sleeve in the hollow cover is provided with a compression spring, the section penetrated in the keyhole is a polygon prism, and the end extended out of the hollow cover is provided with a lock hook. The compression spring can push the key pushing rod, and a key can be automatically sprang out of the keyhole. The utility model has the advantages of simple structure, compact structure, convenient manufacture, convenient operation, and high safety.

Description

The refrigerator Spring door lock

The utility model belongs to a kind of door lock, is a kind of refrigerator Spring door lock specifically.

Lock on the existing refrigerator is if not pulling up key artificially, and then key can be stayed in the keyhole, when the people leaves, easily key is forgotten and is being locked, and like this, can cause stolenly, and particularly child easily is strayed in the refrigerator, and child is come to harm.(the patent No.: 95240811) that Chinese patent discloses a kind of " refrigerator, refrigerator-freezer door lock ", it comprises the lock housing between the top cover that is installed in chamber door, foaming layer, the door inner bag, lock housing is provided with lock housing outer ring, lock housing inner ring, long spring is placed in the lock housing outer ring, its upper end contacts with panel on being located at core, and short spring is placed in the lock housing outer ring, has been located in latch hook on it, be placed with core in the die cavity of latch hook one end band, the other end that lock angles can lock together with the box mouth frame.During with the sealed refrigerator of key, refrigerator-freezer door lock, at first press core, making core drive latch hook moves down together, when the boss on being located at core moves to the through hole that is located at the lock housing outer ring, core is done 90 ° of rotations, at this moment core just drives latch hook and does 90 ° of rotations together, and core is locked together in the box mouth frame.Meanwhile, core is returned to reset condition under the effect of long spring restoring force.When opening the refrigerator ice cabinet door lock with key, only need press core after, do 90 ° of rotations in the other direction, latch hook is broken away from from the box mouth frame comes, at this moment latch hook, core are returned to reset condition together lacking under spring, the effect of long spring restoring force.Although this lock has adopted two springs, part is many, and structure is comparatively complicated, the key of forgeing in keyhole can not be ejected, and can't resolve the problems referred to above that freezer door is latched in.

The purpose of this utility model is to provide a kind of improved door lock for refrigerator at the deficiencies in the prior art, and it is simple in structure, compact, and processing and fabricating is convenient, door lock open or locking after, can automatically key be ejected keyhole.

The purpose of this utility model is achieved by the following technical solution: a kind of door lock for refrigerator, comprise lock body, core, latch hook and spring, it is characterized in that described core keyhole is that cross section is polygonal through hole, the core back segment penetrates in the axle center round tube hole of lock body back boss, be covered with a hollow cap on the boss, the key knock-pin that protruding circular ring is arranged in the middle of one is arranged in hollow cap and the keyhole, one section key knock-pin in the hollow cap is with a compression spring outward, the compression both ends of the spring withstands on respectively on key knock-pin protruding circular ring and the hollow cap bottom surface, the one section key knock-pin that penetrates in the keyhole is the shape of cross section polygon prism identical with the keyhole shape of cross section, and front end is concordant substantially with the keyhole front end, key knock-pin rear end passes from the through hole in the middle of the hollow cap bottom surface, and latch hook is housed on it.

The key bit section of described door lock for refrigerator configuration key is the shape of cross section polygon prism identical with the keyhole shape of cross section.

Boss behind the described lock body is two-stage round platform rank shapes, and hollow cap is enclosed within outside the less upper strata boss of diameter, and hollow cap is bigger than boss axle center round tube hole internal diameter near the cavity internal diameter of boss.

Described key knock-pin intermediate projections annulus outer rim is provided with projection, and boss axle center round tube hole back segment is provided with the axial notch corresponding with projection.

Described latch hook is laminar and vertical with the key knock-pin.

The utility model compared with prior art has many advantages and good effect: owing to adopt spring that the front end rigion of one key knock-pin is headed in the keyhole, door lock open or locking after, can automatically key be ejected keyhole, it is simple in structure, compact, and part is few, processing and fabricating is convenient, be convenient to operation, can prevent that key is retained in the keyhole, causes stolen, particularly avoided child easily to be strayed in the refrigerator, come to harm.

Fig. 1 is the front view of the utility model door lock for refrigerator;

Fig. 2 is the left view of the utility model door lock for refrigerator;

Fig. 3 is that the A-A of Fig. 2 is to sectional drawing;

Fig. 4 is that the B-B of Fig. 2 is to sectional drawing;

Fig. 5 is the front view of the utility model door lock for refrigerator configuration key;

Fig. 6 is the right view of the utility model door lock for refrigerator configuration key.

Below in conjunction with accompanying drawing the utility model is described in further detail:

With reference to Fig. 1-Fig. 3, a kind of door lock for refrigerator, comprise lock body 1, core 2, latch hook 4 and spring 8, described core 2 keyholes are that cross section is pentagonal through hole, core 2 back segments penetrate in the axle center round tube hole of lock body 1 back boss 6, be covered with a hollow cap 5 on the boss 6, the key knock-pin 3 that protruding circular ring 7 is arranged in the middle of one is arranged in hollow cap 5 and the keyhole, one section key knock-pin, the 3 outer compression springs 8 that are with in the hollow cap 5, compression spring 8 two ends withstand on respectively on key knock-pin 3 protruding circular rings 7 and hollow cap 5 bottom surfaces, the one section key knock-pin 3 that penetrates in the keyhole is the shape of cross section pentagonal prism identical with the keyhole shape of cross section, and front end is concordant substantially with the keyhole front end, key knock-pin 3 rear ends pass from the through hole in the middle of hollow cap 6 bottom surfaces, and latch hook 4 is housed on it, and latch hook 4 is laminar and vertical with key knock-pin 3.

Referring to Fig. 4, Fig. 5, the key bit of described key 11 is the shape of cross section pentagonal prism identical with the keyhole shape of cross section for 12 sections.

During use, firmly insert the key bit 12 of key 11 in the keyhole, head on key knock-pin 3 retractions, four projections 10 on the protruding circular ring 7 in the middle of the key knock-pin 3 leave four axial notches 9 of boss 6 axle center round tube hole back segments, enter in the bigger cavity of hollow cap 5, like this, key 11 is just rotatable, latch hook 4 rotates with the key knock-pin in the core 23, opens or close locking.Unclamp hand, under 8 effects of compression spring, key 11 is just ejected keyhole by key knock-pin 3, and key 11 just can not forgotten in keyhole.

Claims

1, a kind of refrigerator Spring door lock, comprise lock body (1), core (2), latch hook (4) and spring (8), it is characterized in that described core (2) keyhole is that cross section is polygonal through hole, core (2) back segment penetrates in the axle center round tube hole of lock body (1) back boss (6), be covered with a hollow cap (5) on the boss (6), the key knock-pin (3) that protruding circular ring (7) is arranged in the middle of one is arranged in hollow cap (5) and the keyhole, the outer compression spring (8) that is with of one section key knock-pin (3) in the hollow cap (5), compression spring (8) two ends withstand on respectively on key knock-pin (3) protruding circular ring (7) and hollow cap (5) bottom surface, the one section key knock-pin (3) that penetrates in the keyhole is the shape of cross section polygon prism identical with the keyhole shape of cross section, and front end is concordant substantially with the keyhole front end, key knock-pin (3) rear end passes from the through hole in the middle of hollow cap (5) bottom surface, and latch hook (4) is housed on it.

2,, it is characterized in that key bit (12) section of described key (11) is the shape of cross section polygon prism identical with the keyhole shape of cross section according to the key of the described refrigerator Spring door lock configuration of claim 1.

3, according to the described refrigerator Spring door lock of claim 1, it is characterized in that the boss (6) behind the described lock body (1) is two-stage round platform rank shape, hollow cap (5) is enclosed within outside the less upper strata boss (6) of diameter, and hollow cap (5) is bigger than boss (6) axle center round tube hole internal diameter near the cavity internal diameter of boss (6).

4, according to the described refrigerator Spring door lock of claim 3, it is characterized in that described key knock-pin (3) intermediate projections annulus (7) outer rim is provided with projection (10), boss (6) axle center round tube hole back segment is provided with the axial notch (9) corresponding with projection (10).

5,, it is characterized in that described latch hook (4) is for laminar and vertical with key knock-pin (3) according to claim 1 or 3 described refrigerator Spring door locks.