CN2223713Y - Lock integral with bicycle preventing from being theft - Google Patents

Abstract

The utility model relates to a built-in theft-proof lock for bicycles, which is composed of a lock tongue, a lock head, a lock core, a lock core rotating shaft and a tongue shifting mechanism. The lock tongue is positioned in a front fork steering shaft, and the lock head, the lock core and the lock core rotating shaft are positioned in the horizontal tube of a front fork. The utility model is characterized in that the tongue shifting mechanism is composed of a cam fixed on the lock core rotating shaft, a draw rod connected to the top of the cam movably by rivets and a shifting block on the end of the draw rod. One side of the shifting block is a flat surface, the other side of the shifting block is a wedge surface, and the shifting block is positioned in a shifting hole on the tail of the lock tongue. The outer part of the lock tongue is provided with a tongue sleeve, a restoring spring is arranged in the tongue sleeve on the tail of the lock tongue, and the shifting block is penetrated through a shifting block positioning hole on the tongue sleeve. The lock body of the utility model is hidden, and the tongue shifting mechanism of the utility model has the advantages of simple structure and reliable use.

Description

The bicycle hidden anti-theft lock

The utility model relates to the anti-theft lock for bicycle that constitutes one with bicycle.More particularly, be a kind of being installed on the handle-bar, in order to the anti-theft lock for bicycle of locking steering hardware.

In the patent No. is 88213238.5 Chinese utility application specification sheets, a kind of being installed on the handle-bar disclosed, turn to the anti-theft lock for bicycle of tap in order to locking, name is called " being installed in the lock on the bicycle front fork ".This lock has played the function of pick-proof preferably because lock body is hidden.But the tongue mechanism of pulling out in its lock adopts gear transmission.Comprise the arm revolving gear fixing, nibble the lower transmissioning gear of platform with arm revolving gear with turning cylinder.Lower transmissioning gear reaches its rotation the upper transfer gear that is connected the transmission shaft upper end by transmission shaft, again by upper transfer gear and the engagement of rack-and-pinion dead bolt, and drive dead bolt and move, because parts are many, unreliable in complex structure, the difficulty of bringing fit on, the use.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, and a kind of simple in structure, service-strong bicycle hidden anti-theft lock is provided.

The purpose of this utility model is realized by following technical scheme.

The utility model is by dead bolt, tapered end, lock core, lock core rotating shaft and pull out tongue mechanism and constitute, its dead bolt is positioned at the front fork steering shaft, have dead bolt hole on the front fork steering shaft of relevant position and the frame-steering central siphon, tapered end, lock core and lock core rotating shaft are positioned at the front fork transverse tube; It is characterized in that pulling out tongue mechanism, this pulls out tongue mechanism by being fixed on the cam in the lock core rotating shaft, the active pull bar that is riveted on the cam top, and the head that pulls out that tie rod end connects firmly constitutes, and pulling out first side is the plane, opposite side is a wedge surface, pulls out the hole of pulling out that head is positioned at the dead bolt afterbody.In the outside of dead bolt the tongue cover is arranged, in the tongue of the dead bolt afterbody cover retracing spring is arranged, pull out head and pass the knock hole that pulls out that tongue puts.

Compared with the prior art, the utility model has not only kept the advantage that lock body is hidden, have better anti-theft feature, and its lock inner drawn tongue mechanism structure is simple, be easy to assembling, uses reliably, therefore, has greatly improved the practicality of this class bicycle lock.

Accompanying drawing is the utility model structural representation.

By the following examples, in conjunction with the accompanying drawings the utility model being done a step describes.

Embodiment:

Referring to accompanying drawing, tapered end 11, lock core 1 are fixed in the front fork transverse tube 10 together with lock core rotating shaft 12, the retracing spring 7 of dead bolt 9 and dead bolt 9 afterbodys is placed in the tongue cover 6, tongue cover 6 is fixed in the front fork steering shaft 8 together with the dead bolt in it 9, retracing spring 7, has dead bolt hole 4 on the front fork steering shaft 8 of relevant position and frame-steering central siphon 3.Dial tongue mechanism by being fixed on the cam 13 in the lock core rotating shaft 12, the active pull bar 14 that is riveted on cam 13 tops, and the shifting block 5 of pull bar 14 ends constitutes, shifting block 5 and pull bar 14 are fixedly connected.Shifting block one side is the plane, and opposite side is a wedge surface.Afterbody at dead bolt 9 has a dial hole 15, and shifting block 5 is positioned at this dial hole 15, on the tongue cover 6 of related device shifting block knock hole 2 is arranged, and shifting block 5 passes the shifting block knock hole 2 on the tongue cover 6.

Clockwise rotate lock core 1, lock core rotating shaft 12 is rotated together with cam 13, close by pull bar 14 drive shifting blocks 5 downward, shifting block 5 slides in dial hole 15, because the location of 2 pairs of shifting blocks of shifting block knock hole, 5 planes, one side on the tongue cover 6, at this moment, dead bolt 9 is drawn in the tongue cover 6 along the wedge surface of shifting block opposite side, and lock is opened.Rotate counterclockwise lock core 1, shifting block 5 makes progress heavily again, because the setting of retracing spring 7, dead bolt is sprung in the dead bolt hole 4, is pinned.

As shown in the figure, the top in shifting block 5 wedge surfaces one side is provided with a groove 16, in order to unlocking condition is locked.

Claims (2)

1, bicycle hidden anti-theft lock, by dead bolt, tapered end, lock core, lock core rotating shaft with pull out tongue mechanism and constitute, its dead bolt (9) is positioned at front fork steering shaft (8), have dead bolt hole (4) on the front fork steering shaft (8) of relevant position and the frame-steering central siphon (3), tapered end (11), lock core (1) and lock core rotating shaft (12) are positioned at front fork transverse tube (10); It is characterized in that pulling out tongue mechanism, this pulls out tongue mechanism by being fixed on the cam (13) in the lock core rotating shaft (12), the active pull bar (14) that is riveted on cam (13) top, and the shifting block (5) that connects firmly of pull bar (14) end to constitute, pull out head (5) one sides be the plane, opposite side is a wedge surface, pulls out the hole of pulling out that head (5) is positioned at dead bolt (9) afterbody; In the outside of dead bolt (9) tongue cover (6) is arranged, in the tongue of dead bolt (9) the afterbody cover retracing spring (7) is arranged, pull out head (5) and pass and pull out a knock hole (2) on the tongue cover (6).

2, anti-theft column lock according to claim 1 is characterized in that at the top of pulling out head (5) wedge surface one side one groove (16) being arranged.