CN1307167A

CN1307167A - Door lock for refrigerator

Info

Publication number: CN1307167A
Application number: CN 00110868
Authority: CN
Inventors: 马瑞栋; 李慎初; 郝志杰; 赵凤阳; 王磊
Original assignee: Qingdao Haier Refrigerator Co; Haier Group Corp
Current assignee: Qingdao Haier Refrigerator Co; Haier Group Corp
Priority date: 2000-01-26
Filing date: 2000-01-26
Publication date: 2001-08-08

Abstract

The door lock for refrigerator includes a lock body, a lockwork, lock hook and spring and features that the lockwork has a through hole with polygonal cross section, a back section inserted into circular through hole of boss at the back of the lock body, a hollow cover with a rivet shaped key pushing out nail inside it, and a compression spring between the nail and the bottom of the hollow cover. It has simple structure, is easy to manufacture and can eject the key from lock hole automatically.

Description

Door lock for refrigerator

The invention belongs to a kind of lock, is a kind of door lock for refrigerator specifically.

If the lock on the existing refrigerator does not pull up key artificially, 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, 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 refrigerator, refrigerator-freezer 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, 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 existing freezer door is latched in.

The objective of the invention is provides a kind of improved door lock for refrigerator at the deficiencies in the prior art, and it is simple in structure, compact, and part is few, and processing and fabricating is convenient, is convenient to operation, door lock open or locking after, can automatically key be ejected keyhole.

The objective of the invention is to be achieved through the following technical solutions: a kind of door lock for refrigerator, comprise lock body, core, latch hook and spring, it is characterized in that the keyhole in the described core 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, there is one " rivet " shape key to eject nail in the hollow cap, one compression spring is arranged between its head of a nail end face and hollow cap inner bottom surface, its ailhead section is the shape of cross section polygon prism identical with the keyhole shape of cross section, and penetrate in the keyhole, and terminal concordant substantially with the keyhole front end, the core leading portion exposes on the lock body front end face latch hook is housed.

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.

Described boss is two-stage round platform rank shapes, and hollow cap is enclosed within outside the boss of the less upper strata of diameter, and boss upper edge, upper strata is provided with groove, and key ejects the projection that ailing cap bottom surface is provided with corresponding engagement with groove, and the ailhead end is a planar end surface.

Described latch hook is laminar and parallel with the lock body front end face, and an end is enclosed within the core leading portion and is connected as a single entity, and the other end is the hook shape.

Have fixing screw hole on the described lock body.

The present invention compared with prior art has many advantages and good effect: owing to adopt spring that the ailhead section that one key ejects nail 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, and processing and fabricating is convenient, be convenient to operation, can prevent that key is retained in the keyhole, cause stolenly, particularly avoid child easily to be strayed in the refrigerator and come to harm.

Fig. 1 is the front view of door lock for refrigerator of the present invention;

Fig. 2 is that Figure 1A-A is to sectional drawing;

Fig. 3 is the vertical view of door lock for refrigerator of the present invention;

Fig. 4 is the front view of door lock for refrigerator configuration key of the present invention;

Fig. 5 is the left view of door lock for refrigerator configuration key of the present invention;

Fig. 6 is installed in partial schematic diagram on the refrigerator for door lock for refrigerator of the present invention.

Below in conjunction with accompanying drawing the present invention is described in further detail:

With reference to Fig. 1-Fig. 3, a kind of door lock for refrigerator, comprise lock body 1, core 3, latch hook 2 and spring 9, it is characterized in that the keyhole 6 in the described core 3 is pentagonal through hole for cross section, core 3 back segments penetrate in the axle center round tube hole of boss 7 of lock body 1 back two-stage round platform stairstepping, there is a hollow cap 8 to be enclosed within outside the less upper strata of the diameter boss 7, boss 7 upper edges in upper strata are provided with four grooves, the head of a nail bottom surface that has a rivet shape key to eject nail 4 in the hollow cap 8 is provided with four projections and is meshed with the upper edge groove of boss 7, one compression spring 9 is arranged between its head of a nail end face and hollow cap 8 inner bottom surfaces, its ailhead section is shape of cross section and the identical pentagonal prism of keyhole 6 shape of cross sections, and penetrate in the keyhole 6, and end is a planar end surface and concordant substantially with keyhole 6 front ends, core 3 exposes on the lock body 1 front end face leading portion the fixedly suit one laminar latch hook 2 parallel with lock body 1 front end face, and latch hook 2 other ends are the hook shape.

Referring to Fig. 4, Fig. 5, the key bit of described key 10 is shape of cross section and the identical pentagonal prism of keyhole 6 shape of cross sections for 11 sections.

Referring to Fig. 6, have fixing screw hole 5 on the lock body 1, hold-down screw passes hole 5, and lock body 1 is fixed on the refrigerator sidewall, and a hook 12 is fixed on freezer door body one side.During use, the pentagonal prism key bit 11 of key 10 is firmly inserted in the keyhole 6, head on key and eject nail 4 retractions, key ejects four grooves that four projections following closely on 4 head of a nail bottom surfaces leave upper strata boss 7 upper edges, key 10 is just rotatable, and latch hook 2 rotates with core 3, enters or withdraw from hook 12.Unclamp hand, under 9 effects of compression spring, key ejects the head of a nail bottom surface projection of nail 4 and the groove of boss 7 meshes again, and key 10 is just ejected nail 4 by key and ejects keyhole 6, and key 10 just can not forgotten in keyhole 6.

Claims

1, a kind of door lock for refrigerator, comprise lock body (1), core (3), latch hook (2) and spring (9), it is characterized in that the keyhole (6) in the described core (3) is polygonal through hole for cross section, core (3) back segment penetrates in the axle center round tube hole of lock body (1) back boss (7), be covered with a hollow cap (8) on the boss (7), there is one " rivet " shape key to eject nail (4) in the hollow cap (8), between its head of a nail end face and hollow cap (8) inner bottom surface one stage clip (9) is arranged, its ailhead section is shape of cross section and the identical polygon prism of keyhole (6) shape of cross section, and penetrate in the keyhole (6), and terminal concordant substantially with keyhole (6) front end, core (3) exposes on lock body (1) the front end face leading portion latch hook (2) is housed.

2,, it is characterized in that key bit (11) section of described key (10) is the shape of cross section polygon prism identical with the keyhole shape of cross section according to the key of the described door lock for refrigerator configuration of claim 1.

3, according to the described door lock for refrigerator of claim 1, it is characterized in that described boss (7) is a two-stage round platform stairstepping, hollow cap (8) is enclosed within outside the less upper strata of the diameter boss (7), upper strata boss (7) upper edge is provided with groove, key ejects the projection that nail (4) head of a nail bottom surface is provided with corresponding engagement with groove, and the ailhead end is a planar end surface.

4, according to claim 1 or 3 described door lock for refrigerator, it is characterized in that described latch hook (2) for laminar and parallel with lock body (1) front end face, an end is enclosed within core (6) leading portion and is connected as a single entity, and the other end is the hook shape.

5,, it is characterized in that having on the described lock body (1) fixing screw hole (5) according to the described door lock for refrigerator of claim 4.