CN2883586Y

CN2883586Y - Double-ring pulley lock barrel

Info

Publication number: CN2883586Y
Application number: CN 200520133053
Authority: CN
Inventors: 林旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-17
Filing date: 2005-11-17
Publication date: 2007-03-28
Anticipated expiration: 2015-11-17

Abstract

The utility model discloses a two-ring pulley lock core, which is designed to solve the shortcomings of the prior locks of lower degree of safety and easier reproduction of keys. The utility model provides a two-ring pulley lock core, wherein the lock body is provided with an upper billiard slot, and the lock core is provided with a lower billiard slot corresponding to the upper billiard slot; upper billiards are arranged in the upper billiard slot, and lower billiards are arranged in the lower billiard slot; the bottom of the upper billiards is contacted with the top of the lower billiards; a spring is arranged between the top of the upper billiards and the lock body; during locking, the upper billiard slot is corresponding to and communicated with the lower billiard slot; the bottom of the upper billiards is penetrated into the lower billiard slot; during unlocking, the upper billiards are fully penetrated into the upper billiard slot, so the lock core can be rotated in relation to the lock body. The utility model has the advantages that the two-ring pulley lock core has a two-layer billiard structure with higher degree of safety, the key is provided with a moveable pulley, thus eliminating the possibility of reproduction and improving safety performance.

Description

Dicyclo pulley lock core

Technical field

The present invention relates to a kind of dicyclo pulley lock core.

Background technology

Lock is the article that can't leave in the life of people's schedule, and the human lock that always uses is since ancient times preserved important article, and the property of oneself can not stolen by other people.Along with development of science and technology, emerge in an endless stream as advanced persons' such as coded lock, electronic lock lock, but complicated structure and high cost make these locks can only be applied in some important departments the most frequently used still lock of standard machinery structure that arrives in people's daily use.The lock of existing machinery structure comprises lock body and lock core, and described lock core is the cylindrical of interior sky, has key; Described lock body sheath is connected on the lock core outside, and under the lock opening, lock core can rotate with respect to lock body; Be provided with several pellets shot from a slingshot in the lock body, when key did not insert key, pellet shot from a slingshot withstood lock core under the effect of spring, and lock core can't be rotated; When correct key inserted keyhole, teeth on the key headed into described pellet shot from a slingshot in the lock body, and lock core can be rotated with respect to lock body.The lock of this structure, have following problem: 1, Key structure is simple, is very easy to be replicated; 2, billiards structure is simple, makes lock be easy to be pried open poor stability.

Summary of the invention

At the existing problem and shortage of above-mentioned existing lock, the purpose of this utility model provides higher, the difficult dicyclo pulley lock core of being prized of a kind of safety.

For realizing the purpose of this utility model, the utility model proposes a kind of dicyclo pulley lock core, comprise key, lock core and lock body, described lock core is the cylindrical of interior sky, has key; Described lock body sheath is connected on outside the lock core; Described dicyclo pulley lock core also comprises: lock body is provided with bullet groove, and lock core is provided with and the described corresponding following bullet groove in bullet groove position that goes up; Be provided with pellet shot from a slingshot in the described last bullet groove, be provided with down pellet shot from a slingshot in the described following bullet groove, the bottom surface of last pellet shot from a slingshot contacts with the last end face of following pellet shot from a slingshot, is provided with spring between the last end face of last pellet shot from a slingshot and lock body; When lock is in locking state, and the connection corresponding of last bullet groove with following bullet groove position, bullet groove is stretched into down in last pellet shot from a slingshot bottom; When lock was in opening, the described pellet shot from a slingshot of going up stretched in the bullet groove fully, and went up the section of the contact surface of pellet shot from a slingshot and following pellet shot from a slingshot, and the section with the contact surface of lock body and lock core is positioned at same plane, and lock core can be rotated with respect to lock body.

Wherein, described key body shape is corresponding with the key shape of described lock core, and described key body surface has depression, and described depression is corresponding one by one with the position of described pellet shot from a slingshot down, and the degree of depth of described depression, the length that stretches into down part in the bullet groove with the last pellet shot from a slingshot of its correspondence position is identical.

Wherein, the shape of described depression is identical with the shape of following pellet shot from a slingshot bottom surface.

Wherein, described key also has movable pulley, and the axle of described movable pulley is positioned at key body, and the movable pulley slightly larger in diameter is in key body thickness.

Wherein, described pellet shot from a slingshot end face down is an arc.

Wherein, described upward bullet groove is identical with following bullet groove internal diameter, and described upward pellet shot from a slingshot is identical with following billiards diameter.

Wherein, the described billiards diameter of going up is slightly less than the bullet groove internal diameter, and can in last bullet groove He in the following bullet groove, do/descend to move.

Wherein, described billiards diameter down is slightly less than down the bullet groove internal diameter, and can do in the bullet groove down/descend to move.

The dicyclo pulley lock core that the utility model proposes has double-deck billiards structure, has higher safety; The utility model proposes simultaneously and lock supporting key,, can't be replicated, improved the safety of lock more because the surface has movable pulley.

Description of drawings

Fig. 1 is that the master that the utility model preferred embodiment lock is positioned at locking state looks sectional view;

Fig. 2 is that the A-A of Fig. 1 is to sectional view

The master that Fig. 3 the utility model preferred embodiment lock is positioned at opening looks sectional view;

Fig. 4 is that the A-A of Fig. 3 is to sectional view;

Fig. 5 is the front view of the key of the utility model preferred embodiment at unused state;

Fig. 6 is the vertical view of the key of the utility model preferred embodiment at unused state.

The specific embodiment

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

The utility model preferred embodiment comprises lock body 1, lock core 2 and key 8, and described lock core is the cylindrical of sky in 2, has key 3; Described lock body 1 is socketed in outside the lock core 2.Described dicyclo pulley lock core also comprises: be provided with bullet groove in the lock body, lock core is provided with and the described corresponding following bullet groove in bullet groove position that goes up; Described going up in the bullet groove is provided with pellet shot from a slingshot 4, and described have following pellet shot from a slingshot 5 in the bullet groove down, is provided with spring 7 between the last end face of the last pellet shot from a slingshot 4 of the bottom surface of last pellet shot from a slingshot 4 and following pellet shot from a slingshot 5 and lock body and seals steel ball.Simultaneously, the employed key body shape of the lock that the utility model proposes is corresponding with key 3 shapes of described lock core, described key body surface has depression 9, described depression 9 is corresponding one by one with the position of described pellet shot from a slingshot 5 down, and the degree of depth of described depression, and the length that stretches into down part in the bullet groove with its corresponding last pellet shot from a slingshot 4 is identical, after key 8 inserts key 3 like this, to descend pellet shot from a slingshot jack-up, and make pellet shot from a slingshot enter bullet groove fully, lock core can rotate.The shape of described depression is identical with the shape of following pellet shot from a slingshot 5 bottom surfaces.Described pellet shot from a slingshot end face down is an arc, and radian is identical with the surperficial radian of the lock core position at place, and last pellet shot from a slingshot bottom is corresponding with following pellet shot from a slingshot top shape.Described upward bullet groove is identical with following bullet groove internal diameter, and described upward pellet shot from a slingshot 4 is identical with following pellet shot from a slingshot 5 diameters.Described pellet shot from a slingshot 4 diameters of going up are slightly less than the bullet groove internal diameter, and can in last bullet groove He in the following bullet groove, do/descend to move.Following pellet shot from a slingshot 5 diameters are slightly less than down the bullet groove internal diameter, and can do in the bullet groove down/descend to move.

As depicted in figs. 1 and 2, when lock is in locking state, and the connection corresponding one by one of last bullet groove with following bullet groove position, under the effect of spring, bullet groove one segment distance is stretched into down in last pellet shot from a slingshot 4 bottoms, to descend pellet shot from a slingshot 5 roof pressures on lock core bottom surface 31, because the obstruction of last pellet shot from a slingshot 4, lock core can't rotate.As shown in Figure 3 and Figure 4, when opening lock, correct key is inserted key, pellet shot from a slingshot under the key jack-up, under the effect of following pellet shot from a slingshot 5, last pellet shot from a slingshot 4 all is positioned at bullet groove, and following pellet shot from a slingshot 5 all is positioned at bullet groove down, and lock core can be rotated with respect to lock body.

As shown in Figure 4, as preferably, this preferred embodiment adopts double pellet shot from a slingshot in order to improve safety.

As shown in Figure 5 and Figure 6, as preferably, the key 8 that the dicyclo pulley lock core in this preferred embodiment uses has movable pulley 11 in key body, and described slip wheel shaft 10 is arranged in key body.As shown in Figure 1, after key inserts key, because the effect of lock core bottom surface 31, movable pulley 11 is by jack-up, corresponding 4 jack-up of pellet shot from a slingshot up and down of movable pulley 11 drives make pellet shot from a slingshot 4 all be positioned at bullet groove and following pellet shot from a slingshot 5 all is positioned at bullet groove down, and lock core can be rotated.Owing to have movable pulley, the employed key of dicyclo pulley lock core that the utility model proposes can't be replicated, and has improved safety.

Claims

1, a kind of dicyclo pulley lock core comprises key, lock core and lock body, and described lock core is the cylindrical of interior sky, has key; Described lock body sheath is connected on outside the lock core, it is characterized in that, described dicyclo pulley lock core also comprises: lock body is provided with bullet groove, and lock core is provided with and the described corresponding following bullet groove in bullet groove position that goes up; Be provided with pellet shot from a slingshot in the described last bullet groove, be provided with down pellet shot from a slingshot in the described following bullet groove, the bottom surface of last pellet shot from a slingshot contacts with the last end face of following pellet shot from a slingshot, is provided with spring between the last end face of last pellet shot from a slingshot and lock body; When lock is in locking state, and the connection corresponding of last bullet groove with following bullet groove position, bullet groove is stretched into down in last pellet shot from a slingshot bottom; When lock was in opening, the described pellet shot from a slingshot of going up stretched in the bullet groove fully, and went up the section of the contact surface of pellet shot from a slingshot and following pellet shot from a slingshot, and the section with the contact surface of lock body and lock core is positioned at same plane, and lock core can be rotated with respect to lock body.

2, dicyclo pulley lock core according to claim 1, it is characterized in that, described key body shape is corresponding with the key shape of described lock core, described key body surface has depression, described depression is corresponding one by one with the position of described pellet shot from a slingshot down, and the degree of depth of described depression, the length that stretches into down part in the bullet groove with the last pellet shot from a slingshot of its correspondence position is identical.

3, dicyclo pulley lock core according to claim 2 is characterized in that, the shape of described depression is identical with the shape of following pellet shot from a slingshot bottom surface.

4, according to claim 2 or 3 described dicyclo pulley lock cores, it is characterized in that described key also has movable pulley, the axle of described movable pulley is positioned at key body, and the movable pulley slightly larger in diameter is in key body thickness.

5, dicyclo pulley lock core according to claim 4 is characterized in that, described pellet shot from a slingshot end face down is an arc.

6, dicyclo pulley lock core according to claim 5 is characterized in that, described upward bullet groove is identical with following bullet groove internal diameter, and described upward pellet shot from a slingshot is identical with following billiards diameter.

7, dicyclo pulley lock core according to claim 6 is characterized in that, the described billiards diameter of going up is slightly less than the bullet groove internal diameter, and can in last bullet groove He in the following bullet groove, do/descend to move.

8, dicyclo pulley lock core according to claim 7 is characterized in that, described billiards diameter down is slightly less than down the bullet groove internal diameter, and can do in the bullet groove down/descend to move.