CN2871757Y - Double-layer safety lock - Google Patents

Abstract

The utility model provides a double layer anti-theft lock, which comprises a lock body (1), a cipher device (2,3,4) and a protective cover (6), which is characterized in that: a locking hole (7) is protected by the protective cover, which is controlled by the cipher device. The protective cover can be opened only after gaining access to the ciphers set by the owner; after the protective cover is opened, the lock can be unlocked by inserting key, otherwise, unlocking is impossible without cipher, even with a master key.

Description

Double-deck theftproof lock

(1) technical field

The utility model relates to a kind of double-deck theftproof lock, is applicable to that the safe antitheft of tricycle, motorcycle, bicycle, door uses.

(2) technical background

In a lot of local uses that theftproof lock is all arranged, but by opening phenomenon that theftproof lock steals Chang Yanchong still.Reason mainly contains: the poor qualities of a lot of locks, between several the locks even can open mutually; Stealer uses special MASTERKRY just almost can open existing all locksets.

(3) summary of the invention

In order to solve above-mentioned two problems, main with sovereign right unique lock of giving of unblanking, the utility model provides a kind of double-deck theftproof lock.Mainly combine by lock body (1), encryption apparatus (2,3,4), over cap (6); it is characterized in that: lockhole (7) is protected by over cap; over cap is controlled by encryption apparatus; only know that password just can open over cap; only opened over cap and could insert key, and then opened lock, even and the thief does not have key or master key is arranged; but do not know password, therefore just can not open lock.

In order to achieve the above object, the technical scheme taked of the utility model is:

Encryption apparatus (2,3,4) and over cap (6) are combined on the lock body (1), encryption apparatus by post-tensioning button (2), password string (3), password button (4) be set form.When having only current password identical, just can pull back the post-tensioning button, open over cap automatically, insert key and just can open lock with original password that is provided with; Or the password button is set to pusher, reset password.

The beneficial effects of the utility model are: 1, have the advantage combination of password and lock, play double-deck antitheft effect.2, anti-theft device is simple in structure, and is easy and simple to handle, and cost is low.

(4) description of drawings

Figure one is an encryption apparatus, comprises post-tensioning button (2), password string (3), password button (4) is set.

Figure two is side views of double-deck theftproof lock.

Figure three is front views of double-deck theftproof lock.

(5) specific embodiment

Below in conjunction with figure the utility model being done a nearly step describes:

Graph code is resolved: lock body (1), post-tensioning button (2), password string (3), password button (4), knob (5), over cap (6), lockhole (7), left-hand thread valve (8), lock ring (9), through hole (10), rotating shaft (11) are set.

Figure one is an encryption apparatus, when the current password in the password string (3) rotates to when identical with original password that is provided with, post-tensioning button (2) can be toward post-tensioning, its front tip left through hole (10) and broke away from over cap (6) this moment, there is the spring of S type to have contraction in the over cap and opens automatically, after unclamping hand, restore automatically owing to before the post-tensioning button spring is arranged; Perhaps password button (4) is set and just new password can be set toward pusher, method is pusher and pins the password button is set that rotate the monogram that password string is liked to oneself then, new password has just been set up success, when unclamping hand, password is set restores automatically because of there is spring its rear end.Password in the password string is made up of 3～5 cipher rings, and each cipher ring is made up of 10～26 lexicographic orders from A～Z, and (10～26) can be arranged ^3～5Individual password combination.

Figure two is side views of double-deck theftproof lock, and knob (5) has played the effect that convenience is closed over cap.

Figure three is front views of double-deck theftproof lock, exposes lockhole (7) after opening over cap, and insert key and just can open lock this moment.In this figure, the effect of left-hand thread valve (8) is and the mutual interlock of over cap, prevents that over cap from sticking up outward, can form triangle with through hole (10), rotating shaft (11) simultaneously after closing over cap, and firm over cap plays the effect of pick-proof.

Claims (2)

1. a double-deck theftproof lock is mainly combined by lock body (1), encryption apparatus (2,3,4), over cap (6), it is characterized in that: lockhole (7) is by the over cap protection, and over cap is controlled by encryption apparatus.

2. by the described puzzle theft-proof lock of claim 1, it is characterized in that:

---encryption apparatus by post-tensioning button (2), password string (3), password button (4) be set form, when having only current password identical, just can draw the post-tensioning button with original password that is provided with; Perhaps the password button is set, new password is set to pusher;

---password string (3) is made up of 3～5 cipher rings, and each cipher ring is made up of 10～26 lexicographic orders from A to Z;

---S shape spring is arranged in the over cap (6), and when the tip of post-tensioning button broke away from over cap, over cap can automatically spring open, and exposes lockhole (7).

---lockhole (7), left-hand thread valve (8), rotating shaft (11) are closed the back at over cap and are formed triangle, fixedly over cap.

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