CN2091925U - bicycle anti-theft lock - Google Patents

Abstract

The utility model is an anti-theft lock for bicycles, which is improved on the basis of the original ring type bicycle lock, and belongs to mechanical processing products. The utility model is characterized in that the entire locking mechanism is completely contained in the lock head body and becomes a closed overall structure. When the locking pin is inserted into the pin hole to achieve locking. Because the locking mechanism is fully enclosed, it is difficult to open the lock even if the shell is pried open without a key, so as to achieve the purpose of anti-theft. The lock is beautiful in appearance, simple in structure, and easy to manufacture. It can be produced in general hardware factories, and it is easier to produce in former bicycle lock factories.

Description

The utility model is an improved bicycle anti-theft lock, which belongs to the product of the mechanical processing industry.

At present, the bicycle locks commonly used by people, whether it is the iron stop type, the direct contact type between the lock cylinder and the lock shaft, or the gear type (Chinese patent 85202807), all the locking devices are exposed. It is exposed, and the lock can be opened very conveniently without a key, and the anti-theft performance is very poor. Existing other types of bicycle locks are as: U-shaped locks, chain locks, Chinese patents 85202148, 89208332, although the anti-theft function is stronger, but because of its installation, inconvenient use or high manufacturing costs, the promotion value is not large.

The purpose of the utility model is to avoid the disadvantages of the above-mentioned prior art, and provide a ring-type bicycle anti-theft lock whose lock head is a fully enclosed locking device. It not only retains all the advantages of the original ring-type bicycle lock, but also overcomes the weak point of the original bicycle lock's poor anti-theft function.

The gist of this utility model is that the locking mechanism is a fully enclosed overall structure, that is, the lock cylinder (2), the locking pin (4) and the pin hole (6) on the lock shaft (5) are completely contained in the lock body ( 3) Inside, it constitutes a fully enclosed locking device. The lock body (3) is a metal casting, and the lock shaft (5) moves along the lock shaft guide hole (7) on the lock body (3) to realize its inner lock. When in the locked state, the locking pin (4) is pinned in the pin hole (6) on the lock shaft (5), as long as the lock cylinder (2) does not rotate, the locking pin cannot be disengaged from the overhead hole even if the shell is opened (6), the lock is opened, that is, it is difficult to open the car lock without a key, which plays an anti-theft role.

The principle of the utility model is: when locking the car, the handle on the lock shaft (5) can be pulled, and when the pin hole (6) on the lock shaft (5) moves to the locked position, the lock pin (4) is at its tail Pushed by the spring force, it is partially inserted into the pin hole (6) on the lock shaft (5), and the key is pulled out to realize locking. When it needs to be opened, insert the key into the keyhole and turn the lock cylinder (2), and push the locking pin (4) through the dial at the end of the lock cylinder (2), so that the locking pin (4) is detached from the lock shaft (5). Pin hole (6), lock shaft (5) resets under the effect of its spring tension, and lock is opened, and now key can't be taken out. The main function of the utility model is to insert the locking pin (4) into the pin hole (6) on the lock shaft (5) moving along the lock shaft guide hole (7) on the lock head body (3) to realize its inner lock. Completed. When the lock pin (4) is inserted into the pin hole (6) on the lock shaft (5), it is in the locked state, and the lock pin (4) is pulled out of the pin hole (6) on the lock shaft (5) under the action of external force to open State, the external force that locking pin (4) extracts pin hole (6) is to complete by the rotation lock core (2) of key. As long as the lock cylinder (2) does not rotate, the lock pin (4) is always inserted into the pin hole (6) on the lock shaft (5), and the lock pin (4) cannot be disengaged from the lock shaft (5) even if the casing is opened The pin hole (6) on the top, thus plays the role of anti-theft lock.

Attached drawing 1. The front view of the anti-theft lock.

Accompanying drawing 2. Anti-theft lock A - A sectional view.

In the attached drawings: 1┈shell; 2┈lock core; 3┈lock body; 4┈lock pin; 5┈lock shaft

Claims (3)

1. A bicycle anti-theft lock consisting of a shell, a lock head, a lock shaft, and a lock shaft spring. It is characterized in that the lock shaft [5] moves along the lock shaft guide hole [7] on the lock body [3] , so that all locking devices are completely contained in the lock head body [3], forming a fully enclosed locking mechanism. 2. The bicycle anti-theft lock according to claim 1, characterized in that the fully enclosed locking mechanism is composed of a lock body [3], a lock cylinder [2], a lock pin [4] and a lock cylinder pin. The whole lock head is contained in the annular shell. 3. The bicycle anti-theft lock according to claims 1 and 2, characterized in that the movement conversion between the lock cylinder [2] and the locking pin [4] is a crank slider mechanism, or other types of mechanisms.

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