CN101988353B

CN101988353B - Lock capable of preventing from forgetting pulling out key

Info

Publication number: CN101988353B
Application number: CN 201010530574
Authority: CN
Inventors: 方先鹿
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2013-03-13
Anticipated expiration: 2030-11-03
Also published as: CN101988353A

Abstract

The invention provides a lock capable of preventing from forgetting pulling out the key. The lock comprises an original lock, a cam disk, a bolt, a stop pin, a bolt spring and a bolt rotation shaft, wherein the front end of the key is inserted in the cam disk; a groove on the back of the cam disk contacts with the tail of the bolt; the tail of the bolt is connected with the bolt spring; one end of the bolt spring is fixed on the wall of the original lock; the bolt can rotate around the bolt rotation shaft; and the lock cylinder is provided with the stop pin. A common lock is modified to obtain the lock of the invention and a device preventing from forgetting pulling out the key is added, thus the unsafe factors caused by forgetting pulling out the key after locking the door can be effectively avoided.

Description

Prevent the lock forgetting to pull key

Technical field

The present invention relates to a kind of lockset, especially relate to a kind of lock of forgetting to pull key of preventing.

Background technology

The effect of lock is that the private ownership that guarantees personal space or article is inviolable, and effectively protects personal property safety.The design of existing Household door lock is more and more safer, but lacks the measure of preventing key from not pulling, and everyone has to close and forgets behind the door the possibility of pulling up key, especially the elderly, owing to oneself carelessness causes the event of life and property loss of common occurrence.

Summary of the invention

The purpose of this invention is to provide a kind of lock of forgetting to pull key of preventing, this lock can realize not pulling up key just can't make the lock normal operation, thereby effectively avoids the loss forgetting to pull key and bring.

In order to achieve the above object, the lock forgetting to pull key of preventing of the present invention, comprise former lock, cam disk, latch, backing pin, latch spring and latch rotating shaft, it is characterized in that: the key slot is left in the cam disk front, and the back side is groove from shallow to deep, and latch is " Z " shape, backing pin is arranged on the lock core, latch spring one end is fixed on the lock wall, and an end is connected with latch, and the latch rotating shaft is fixed on the lock wall and passes latch " throat ".

The aforesaid lock forgetting to pull key of preventing is characterized in that: the groove at the cam disk back side contacts with latch is terminal.

The aforesaid lock forgetting to pull key of preventing is characterized in that: elasticity rate lock tooth and the frictional force between the key of latch spring are little.

The cam disk back side is groove from shallow to deep, and contact with latch is terminal, key inserts and does not rotate, because the elastic force of latch spring can't overcome the friction of lock tooth and key, can oppress latch spring, thereby make latch around latch rotating shaft rotation the latch front end be inserted between the backing pin of lock core, can't lock a door thereby lock core can't be ejected; And pull up key, and latch spring makes the latch end automatically slide into the dark groove of cam disk, thus latch produces between the backing pin, and plugging the key rotation also is as a same reason, only makes the latch end slide into the dark groove of cam disk manually.

The lock forgetting to pull key of preventing of the present invention carries out architecture advances on the basis of original lock, has effectively avoided owing to forget after locking a door and pull up the unsafe factor that key causes.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the working state figure of the embodiment of the invention.

The specific embodiment

The explanation of Fig. 1 mark: lock core 1, key 2, cam disk 3, backing pin 4, lock core spring 5, latch 6, latch rotating shaft 7, latch spring 8.

Referring to Fig. 1, the embodiment of the lock forgetting to pull key that prevents of the present invention increases the unpulling-out proof device on the basis of original lock, by cam disk 3, and backing pin 4, latch 6, latch rotating shaft 7, latch spring 8 forms.

Because the groove at cam disk 3 back sides is for from shallow to deep, and the frictional force between the elasticity rate of latch spring lock tooth and the key is little, therefore key 2 inserts and does not rotate and can oppress latch spring 8, latch 6 rotates between two backing pins 4 that make on the front end fork insertion lock core 1 around latch rotating shaft 7, stop lock core spring 5 that lock core is ejected, thereby can't close the door.

Pull up key 2, latch spring 8 makes latch 6 ends automatically slide into groove darker on the cam disk 3, and latch 6 produces between backing pin 4, and lock core 1 can normally eject work; And plug key rotation, and be by manually making latch 6 ends slide into groove darker on the cam disk 3, effect is the same.

The lock forgetting to pull key of preventing of the present invention, simple in structure, on the basis of original lock, slightly make improvements, just can't not close the door so that do not pull up key, forget after effectively having avoided locking a door and pull up the unsafe factor that key causes.

Claims

1. prevent the lock forgetting to pull key, comprise former lock, cam disk, latch, backing pin, latch spring and latch rotating shaft, it is characterized in that: the key slot is left in the cam disk front, the back side is groove from shallow to deep, latch is " Z " shape, and backing pin is arranged on the lock core, and latch spring one end is fixed on the lock wall, one end is connected with latch, and the latch rotating shaft is fixed on the lock wall and passes latch " throat ";

The groove at the cam disk back side contacts with latch is terminal; Elasticity rate lock tooth and the frictional force between the key of latch spring are little.