CN2168049Y - Internal casting type anti-theft lock for bicycle - Google Patents

Abstract

The utility model discloses an on the basis of current lock, be equipped with the movable lock core of taking the wedge in the lock incasement that lock body one side was cast, lock spring, the lock bullet that the lock incasement was equipped with cross the lock core, are equipped with the lock post in the fixed lock section of thick bamboo of lock body shell inside groove, and the key inserts behind the downthehole rotation lock core wedge of lock core, can realize opening and close the lock. The utility model discloses simple structure, intensity increase, pick-proof theftproof performance is good, convenient to use.

Description

Internal-cast antitheft lock for bicycles

The utility model belongs to the technological improvement of bicycle lock, is specifically related to a kind of internal-cast type anti-theft lock for bicycle.

At present, the semi-enclosed or pintle hook lock full-enclosed structure of the general employing of the bicycle lock that people use, the lock pintle hook lock of this structure is confined to the lock middle part.In addition, when lock was in closed state, extension spring was easy to steal car as long as pry open lock housing form cavity in the lock tube after.The crossbar type bicycle lock, the inconvenience of unblanking, with long afterwards, cross bar is easy to become flexible, and has to prevent in traffic safety, the bigger scarce limit of above-mentioned two kinds of structure locks is that the snap pellet shot from a slingshot exposes, dig out pellet shot from a slingshot after lock come off automatically, also easily steal car.

The purpose of this utility model provides a kind of safe and reliable interior casting locking-type anti-theft lock for bicycle.

The scheme of its solution is, band is housed in the lock case that annular lock body one side is cast with carves the flexible lock core of head, the lock core upper surface has slotting keyhole, lateral attitude, lock case left side is provided with four identical apertures, lock pellet shot from a slingshot that is equipped with in the hole and snap cross lock core and touch mutually with the protuberance position of key one side, annular lock body shell inside groove is being fixed the similarly circular lock tube of shape, the lock of band handle is housed in the lock tube, draw-in groove that lock one end is provided with and lock are carved head and are joined, connecting the lock extension spring in the small sircle hole that the other end is provided with,, the afterbody of extension spring is connected with the hook that the lock body shell inside groove is fixed again.

The utility model is simple in structure, and the lock case is cast into the body of casting one side, and lock bullet, snap place in the lock case, and intensity increases, and pick-proof, theftproof performance are good, and open and close is easy to use.

Fig. 1 is the utility model structural representation.

Below in conjunction with accompanying drawing embodiment is discussed in detail.Band is housed in the lock case (1) that these antitheft lock (7) one sides are cast with carves the flexible lock core (12) of head (11), the lock core upper surface is provided with the hole of inserting key (3), lateral attitude, lock case left side is provided with the lock pellet shot from a slingshot (2) that is equipped with respectively in four identical apertures and snap (4) and crosses lock core and touch mutually with key (3), annular lock body shell inside groove is being fixed similarly circular lock tube (8) of shape, the lock (10) of band handle (9) is housed in the lock tube, the draw-in groove that lock one end is provided with is carved head (11) with lock core and is linked to each other, connecting lock extension spring (6) in the small sircle hole that the other end is provided with, the extension spring afterbody links to each other with the hook (5) that the lock body shell inside groove is fixed, when key (3) inserts lock core hole, push the lock pellet shot from a slingshot (2) and the snap (4) that cross lock core (12), screw key then, making lock core (12) drive lock carve (11) is separated with lock (10) draw-in groove, lock is subjected to locking the pulling force of extension spring (6), retract along lock tube (8), can finish and unblank, when lock is closed, handle (9) fixing on the lock is pressed down, make lock along lock tube (8) motion, to insert the key rotating band movable lock core of lock core hole again carves, making lock carve head combines with the lock draw-in groove again, extract key then out, can realize locking.

Claims (2)

1, a kind of internal-cast type anti-theft lock for bicycle of forming by lock body, lock, extension spring, key, it is characterized in that: in the lock case (1) that annular lock body (7) one sides are cast with, the flexible lock core (12) that band is carved is housed, and the lock body shell inside groove is provided with the lock (10) that band handle (9) is housed in the similarly circular lock of shape tin (8).

2, internal-cast type anti-theft lock for bicycle according to claim 1, it is characterized in that: lock (10) one ends are provided with draw-in groove and lock core and carve head (11) and join, connecting lock extension spring (6) in the small sircle hole that the other end is provided with, the fixing hook (5) of extension spring afterbody and lock body shell (7) inside groove joins.

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