CN2121515U - Theft-proof bicycle lock - Google Patents

Abstract

The utility model relates to a theft-proof bicycle lock, which can be used for the front wheel and the back wheel of the bicycle. The utility model comprises a lock body, an inner lock core, an inner lock core ring, a hollow steel bent pipe; the hollow steel bent pipe penetrates through a circular arc hole and forms a closed integration with a lock tongue. A working lock and a repairing lock are formed by the inner lock core and the inner lock core ring, the front wheel lock and the back wheel lock can be made in pair, and when used, the lock can be unlocked with one key. The utility model has good anti-prizing performance.

Description

Theft-proof bicycle lock

The utility model relates to a kind of anti-theft lock for bicycle.

Present employed bicycle lock, its structure is generally opposite opened, and this class lock construction is insecure, is pried open easily, or carries trailing wheel slightly, is pushed away away by the people.

The purpose of this utility model is to overcome the weak point of above-mentioned existing bicycle lock, and a kind of anti-theft lock for bicycle is provided.

The technical solution of the utility model is: be provided with a circular arc through hole in lock body, from the other positioning screw hole of circular arc through hole, pack into stage clip, dead bolt, give the lock core for preparing the earlier lock body of packing into, the hollow steel bend pipe is assemblied in the circular arc through hole and the dead bolt location, makes lock become a totally enclosed integral body.Lock core of the present utility model, form by internal cylinder and an internal cylinder ring, internal cylinder is enclosed within the internal cylinder ring, on lock body, internal cylinder, internal cylinder ring diameter direction, be provided with the corresponding mutually pellet shot from a slingshot hole of 4 to 7 rows, be provided with three pellets shot from a slingshot in each pellet shot from a slingshot hole, on the axis direction in pellet shot from a slingshot hole, divide three layers of arrangement, first floor is in internal cylinder, the second layer in the internal cylinder ring, the 3rd layer in lock body, three row pellets shot from a slingshot interconnects.Insert internal cylinder with work key (18) during use, the internal cylinder pellet shot from a slingshot is arranged and internal cylinder cylindrical axis horizontal, and just rotatable, internal cylinder drives dead bolt and unblanks, and at this moment lock core can not got.If in the time of will repairing lock core, insert internal cylinder with repairing key (20), because pellet shot from a slingshot lines up variation, the arrangement of pellet shot from a slingshot and internal cylinder ring cylindrical axis horizontal, internal cylinder pellet shot from a slingshot and the internal cylinder ring pellet shot from a slingshot one that mutually combines, be separated into a big lock core (14) with lock spring, can take out repairing after rotation is unblanked.The utility model can be contained in respectively on the front and rear wheel of bicycle as required.The front and rear wheel lock of bicycle is supporting making, and it is just passable to unblank with a key when working like this.Wherein a lock is the structure that can take out key after taking to unblank.The internal cylinder head of a lock is provided with cam, and dead bolt is opened one and risen as high as the banks, and can take out key after unblanking and remove out another lock.Another lock: the internal cylinder head is a gear, and dead bolt is a tooth bar, and the back key of unblanking hangs over to be locked, and just can take out after shutting.It is identical with general lock to close locking method, when the work key is lost or lock when damaging, and the dog screw of outwarding winding (10), (11), after unblanking with the repairing key, taking-up hollow steel bend pipe lock core, dead bolt, stage clip can be repaired.

The utility model is compared with existing general opposite opened bicycle lock, has following characteristics:

1, because the hollow steel bend pipe (8) in the utility model is formed a full-closed structure by circular hole (9) and dead bolt (5) location, lock is difficult for being prized.

2, internal cylinder and the work of internal cylinder ring formation lock and repairing lock, pick-proof is strong and easy to maintenance.

3, the pairing of front and back wheel lock is made, and key is with same.Only unblank with a key during work, the key keeping is convenient, can prevent effectively that front-wheel from not having lock.Can be flexible during use, an available lock lock car as required, or all pin with two lock handle front and back wheels.

Description of drawings:

Fig. 1 is the structural representation of the anti-theft lock for bicycle of cam for the internal cylinder head.Wherein (1) represents lock body; (2) expression internal cylinder; (3) expression internal cylinder ring; (4) expression stage clip; (5) expression dead bolt; (6) expression locking bar; (7) expression extension spring; (8) represent empty steel bend pipe; (9) expression circular arc through hole; (10) expression dog screw; (11) expression dog screw; (12) expression pellet shot from a slingshot hole; (13) expression dress jam plate.(14) expression lock core;

Fig. 2 is the A-A sectional view of Fig. 1.Wherein (14) represent lock core.

Fig. 3, be the anti-theft lock for bicycle of gear for the internal cylinder head.

Fig. 4 is the B-B sectional view of Fig. 3.

Fig. 5 is the C-C sectional view of Fig. 3.

Fig. 6 is the structural representation in the lock core.

Schematic diagram when Fig. 7 inserts in the lock core for the work key.Wherein (15) represent the internal cylinder pellet shot from a slingshot; (16) expression internal cylinder ring pellet shot from a slingshot; (17) lock spring; (18) expression work key.

Schematic diagram when Fig. 8 inserts in the lock core for repairing key.Wherein (19) represent spring; (20) key is repaired in expression.

Embodiment:

Make a kind of anti-theft lock for bicycle according to the utility model.Hollow steel bend pipe (8) is with hollow steel pipe, bends after heat treatment forms with bending machine.The lock body circular hole is made with machining process.All the other are identical with the manufacture method of existing bicycle lock, and each parts is pressed Fig. 1, Fig. 3 assembling, just can obtain a kind of anti-theft lock for bicycle.

Claims (3)

1, a kind of anti-theft lock for bicycle, has lock body (1), lock core (12), stage clip (4), dead bolt (5), locking bar (6), extension spring (7), hollow steel bend pipe (8) dog screw (10), (11), it is characterized in that lock core (12) is made up of internal cylinder (2) and internal cylinder ring (3), wherein internal cylinder (2) is enclosed within the internal cylinder ring (3), in lock body (1), be provided with a circular arc through hole (9), hollow steel bend pipe (8) is contained in the circular arc through hole (9), in lock body (1), internal cylinder (2), internal cylinder ring (3) diametric(al) is provided with the corresponding mutually pellet shot from a slingshot hole (13) of 4 to 7 rows, is provided with 3 pellets shot from a slingshot in each pellet shot from a slingshot hole (13).

2, for bicycle theftproof lock according to claim 1 is characterized in that being provided with gear on internal cylinder (2) head, is provided with tooth bar on dead bolt (5).

3, for bicycle theftproof lock according to claim 1 is characterized in that being provided with cam on internal cylinder (2) head, is provided with on dead bolt (5) and rises as high as the banks.

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