CN201738657U

CN201738657U - Single-end bottle gourd pattern lock preventing master keys

Info

Publication number: CN201738657U
Application number: CN2010202034669U
Authority: CN
Inventors: 吴宝富
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-24
Filing date: 2010-05-24
Publication date: 2011-02-09
Anticipated expiration: 2020-05-24

Abstract

The utility model discloses a single-end bottle gourd pattern lock preventing master keys. A structure consisting of a connecting bar and a dialing wheel in the current single-end bottle gourd pattern lock is changed into a structure consisting of two rotating wheels and a dialing wheel; moreover, both the two bonds of the two rotating wheels and two grooves in the dialing wheel are asymmetrical. When a key is inserted into a lock core, the grooves at the tail part of the lock core drives the two bonds of the rotating wheels of the key; when the key is rotated to a position that the two bonds of the rotating wheels of the key are overlapped with the positions of the two grooves of the inner hole of the dialing wheel, the rotating wheels of the key are combined with the dialing wheel under the push of the key to drive the dialing wheel to open the lock. As the connecting bar in the current single-end bottle gourd pattern lock is abandoned, grooves at the head of the connecting bar used for bending a steel wire into a hook is avoided, and a round gasket is additionally arranged in front of the rotating wheels of the key, thus completely stopping the possibility that the steel wire for bending hooks and other external unlocking tools skip the lock core and directly dial the rotating wheels of the key. Although the master key can be used to rotate the lock core, the rotating wheels of the key can not be pushed forwards simultaneously when rotating the lock core (as a very large force is needed to overcome the push force of a spring), the key can not be opened still.

Description

Preventing universal key single head cucurbit lock

Technical field

The utility model relates to a kind of single head cucurbit lock, especially a kind of preventing universal key single head cucurbit lock that can prevent crotch steel wire or unlocked by universal key.

Background technology

At present, known single head cucurbit lock key component adopts coupling bar to add the structure of thumb wheel: after key inserted lock core, key head entered in the coupling bar head recess, thereby drove coupling bar, was reached by coupling bar drive thumb wheel and opened this lock.If without key, behind crotch steel insertion lock core, the steel wire crotch enters (though lock core locking this moment in the coupling bar head recess, but coupling bar is still rotatable), can drive coupling bar easily equally, drive thumb wheel by coupling bar again and reach this lock of unlatching, repeatedly test less than through reality and just can open in 3 seconds, be absolutely unsafe.

Summary of the invention

Lock the deficiency that available crotch steel wire is opened easily in order to overcome existing single head cucurbit.The utility model provides a kind of preventing universal key single head cucurbit lock, can thoroughly stop with the crotch steel wire and open, and can prevent unlocked by universal key, thereby greatly improve degree of safety.

The technical scheme that its technical problem that solves the utility model adopts is: the coupling bar in the present single head cucurbit lock is added the thumb wheel structure make double runner into and add the thumb wheel structure.Double runner two keys and thumb wheel endoporus two grooves that match therewith, lock core afterbody two grooves, toggle afterbody two grooves are asymmetric, and height dimension and width dimensions are all inequality.Key runner front is added with ring washer.When key inserts lock core, drive key runner two keys by lock core afterbody two grooves, when turning to the wide key of key runner when overlapping (the narrow key of key runner this moment also overlaps with the narrow groove location in runner hole) with thumb wheel endoporus wide groove position, under key promotes forward, the wide key of key runner enters (the narrow key of key runner this moment also enters in the narrow groove of thumb wheel endoporus) in the thumb wheel endoporus wide groove, can drive thumb wheel this moment, opens this lock by thumb wheel.When not inserting the key turns toggle, drive toggle runner two keys by toggle afterbody two grooves, when turning to the wide key of toggle runner when overlapping (the narrow key of toggle runner this moment also overlaps with the narrow groove location of runner endoporus) with thumb wheel endoporus wide groove position, under the spring thrust effect, the wide key of toggle runner enters (the narrow key of toggle runner this moment also enters in the narrow groove of thumb wheel endoporus) in the thumb wheel endoporus wide groove, can drive thumb wheel this moment, opens this lock by thumb wheel.Because abolished the coupling bar in the existing single head cucurbit lock, not had can be for the coupling bar head recess of steel wire crotch utilization, and be added with ring washer in key runner front, thoroughly stoped crotch steel wire and various external unlocking tool to skip the possibility that lock core is directly stirred the key runner.Though with master key energy rotational lock core, can't in rotational lock core, promote key runner (because this needs overcome spring thrust with a bigger power) forward, still can't open this lock.

The beneficial effects of the utility model are: can thoroughly stop with the crotch steel wire and open, and can prevent unlocked by universal key, thereby greatly improve degree of safety.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Narrow groove 9. springs of narrow key 6. ring washer 7. key 7a. shaped as key bit base plane, the 8. toggle 8a. toggle afterbody wide groove 8b. toggle afterbodys of the wide key 5b. of 1. tapered ends, the 2. lock core 2a. lock core afterbody wide groove 2b. lock core afterbodys narrow groove 3. narrow groove 4. key runner 4a. key runners of the thumb wheel 3a. thumb wheel endoporus wide groove 3b. thumb wheel endoporus wide key 4b. narrow key 5. toggle runner 5a. toggle runners of key runner toggle runner among the figure

In the said structure schematic diagram, in order in a view, to express clearly, with thumb wheel endoporus groove 3a and 3b, lock core afterbody groove 2a and 2b and the equal 90-degree rotation of toggle afterbody groove 8a and 8b position.

Do not belong to other parts in the lock of the present utility model (as stir to drag and stretch sheet, dead bolt, keeper, fixture, lock housing etc.), do not omit among the figure and draw, and made to simplify or omit sign to not relating to detail section of the present utility model in the drawn part.

The specific embodiment

In the drawings, the coupling bar in the existing single head cucurbit lock being added the thumb wheel structure makes double runner 4 and 5 into and adds thumb wheel 3 structures.Because the unlatching of single head cucurbit lock need be rotated more than the half-turn, enter thumb wheel endoporus two groove 3a and 3b for preventing to rotate to stop at following toggle runner two key 5a of spring 9 effects and 5b, promote key runner 4, make key runner two key 4a and 4b break away from thumb wheel endoporus two groove 3a and 3b, so key runner two key 4a and 4b, toggle runner two key 5a and 5b, lock core afterbody two groove 2a and 2b, thumb wheel endoporus two groove 3a and 3b, toggle afterbody groove 8a and 8b are asymmetric, and height dimension and width dimensions are all inequality.In order thoroughly to stop various external unlocking tool contact key runners 4, key runner 4 fronts are added with ring washer 6.

When the lock core 2 in the key 7 insertion tapered ends 1, lock core 2 can rotate, drive key runner two key 4a and 4b by lock core afterbody two groove 2a and 2b, key runner 4 is rotated, when the wide key 4a of key runner goes to the coincidence of thumb wheel endoporus wide groove 3a position (the narrow key 4b of key runner this moment also overlaps with the narrow groove 3b of thumb wheel endoporus position), under promoting forward, key 7 (one segment distance is arranged because of shaped as key bit base plane 7a, add double runner 4 and 5 and be provided with bigger gap, key runner 4 can advance one section than big distance, as shown in the figure), the wide key 4a of key runner enters (the narrow key 4b of key runner this moment also enters in the narrow groove 3b of thumb wheel endoporus) in the thumb wheel endoporus wide groove 3a, (toggle runner 5 breaks away from thumb wheel endoporus two groove 3a and 3b at this moment can to drive thumb wheel 3 this moment, as shown in the figure), open this lock by thumb wheel 3.

When not inserting key turns toggle 8, drive toggle runner two key 5a and 5b by toggle afterbody two groove 8a and 8b, toggle runner 5 is rotated, when the wide key 5a of toggle runner goes to the coincidence of thumb wheel endoporus wide groove 3a position (the narrow key 5b of toggle runner this moment also overlaps with the narrow groove 3b of thumb wheel endoporus position), under spring 9 thrust, the wide key 5a of toggle runner enters (the narrow key 5b of toggle runner this moment enters in the narrow groove 3b of thumb wheel endoporus) in the thumb wheel endoporus wide groove 3a, can drive thumb wheel 3 this moment, opens this lock by thumb wheel 3.

Because abolished the coupling bar in the existing single head cucurbit lock, not had can be for the coupling bar head recess of steel wire crotch utilization, and be added with ring washer 6 in key runner 4 fronts, thoroughly stoped crotch steel wire and various external unlocking tool to skip the possibility that lock core 2 is directly stirred key runner 4.

Though with master key energy rotational lock core 2, can't in rotational lock core 2, promote key runner 4 (because this needs overcome spring 9 thrusts with a bigger power) forward, still can't open this lock.

Claims

1. a preventing universal key single head cucurbit is locked, it is characterized in that: the coupling bar that changes single head cucurbit lock adds the thumb wheel structure and becomes double runner (4 and 5) to add thumb wheel (3) structure, and double runner two keys (4a, 4b and 5a, 5b) and thumb wheel endoporus two grooves (3a and 3b) are asymmetric.