CN2378270Y - Built-in antitheft lock for bicycle - Google Patents

Abstract

The utility model relates to a lockset, and particularly relates to a concealed theft-proof lock used for a bicycle (including a tricycle). The utility model is different from a traditional independent vehicle locking mode, and is also different from the existing included theft-proof lock. The utility model is characterized in that a lock body is provided with a groove provided with a lock block, and the lock block can form expansion and contraction in the groove following the rotation of a lock core. The theft-proof lock can be hidden in lock holes arranged on a bicycle front pipe and a vertical pipe of a front fork, and the theft-proof lock are matched with the lock holes to realize the locking and the unlocking of the bicycle. The lock is hidden in a bicycle body, has the advantages of difficult damage and convenient processing and use, and is a new generation product of the lock for a bicycle.

Description

Concealed anti-theft lock for bicycle

The utility model relates to a kind of lockset, particularly a kind of concealed bicycle (comprising tricycle) anti-theft column lock.

At present, the bicycle car is trivial of a great variety on the market, and the lock of going in ring, U-shaped lock and chain lock are arranged, and these all are that transmitted beam binds the purpose front and rear wheel rotation and that reach the lock car.Chinese patent CN2236986Y discloses a kind of built-in hidden-locked bicycle, has adopted concealed anti-theft lock for bicycle, and its method is to connect a bail in lock pin coaxial, cooperates with the baffle plate that places vertical tube of front fork to lock.Though this lock has had improvement than the former, need special processing mold professional production, when installing and using, need the baffle plate predetermined fixed in vertical tube of front fork, therefore increase and produce and installation procedure.

The purpose of this utility model provide a kind ofly be different from promptly that traditional locks car pattern is better than again that the volume of existing design plan is small and exquisite, good concealment, should not destroy, novel anti-burglar lock easy to install.

The technical solution of the utility model is: when spring lock is in opening, along perpendicular to axial direction the offering of lock body 1 " in " the font depth recess, and offer a groove in the corresponding position of lock core 3, in groove, be equipped with one with its free-running fit and can move up and down " in " the circular lock dog 2 of font, on the protruding axle in the both sides of lock dog 2, spring 4 is housed respectively, compress the location by lock body 1 outer lock tube 5, offer one and the cooresponding notch of lock dog 2 diameters in the lock tube 5 and the corresponding position of lock dog 2, the outside of lock body 1 is provided with along the boss of parallel axes direction.

This technical scheme also is included in bicycle front tube 6 and relatively rotates than after the wide-angle with vertical tube of front fork 7, and the circular hole that is slightly larger than lock body 1 is offered in its underpart again, and offers a gap slot at the circular hole periphery of preceding pipe, matches with the boss in lock body 1 outside.

This technical scheme also can be improved to lock body 1 and lock tube 5 is designed to cone shape, and the taper hole of the circular hole of preceding pipe 6 and vertical tube of front fork 7 for matching with lock body 1 saves the boss in lock body 1 outside.

After taking technique scheme, the preceding pipe 6 of anti-theft column lock and bicycle and vertical tube of front fork 7 form free-running fit, anti-theft column lock places in the circular hole fully, lock dog 2 by anti-theft column lock is with the preceding pipe 6 and vertical tube of front fork 7 lockings of bicycle, the thief can't open, also be difficult to implement to destroy, thereby realize lock car and theft-proof purpose.The utility model is simple in structure, and is with low cost, and anti-theft effect is obvious, and new old bike all can be installed and used.

Elaborate below in conjunction with the drawings and specific embodiments.

Fig. 1 is an anti-theft column lock lock-out state schematic appearance;

Fig. 2 is an anti-theft column lock opening schematic appearance;

Fig. 3 is an anti-theft column lock lock-out state A-A schematic cross-section;

Fig. 4 is an anti-theft column lock opening C-C schematic cross-section;

Fig. 5 is an anti-theft column lock lock body birds-eye view;

Fig. 6 is an anti-theft column lock opening B-B longitudinal cross-section scheme drawing;

Fig. 7 is a bicycle front tube lockhole position view;

Fig. 8 is a bicycle front fork standpipe lockhole position view;

Fig. 9 is the scheme drawing of anti-theft column lock lock dog 2.

As shown in Figure 6, the lock tube 5 at cylinder tumbler lock has one and the cooresponding notch of lock dog 2 diameters; Lock body 1 have one as shown in Figure 5 " in " the font depth recess; Lock core 3 has a rectangular recess.Lock dog 2 places in the groove of lock body 1, and places spring 4 on lock dog 2 two protruding axles vertically, then lock tube 5 is inserted in lock body, and spring 4 is locked in the lock body 1.

As shown in Figure 7 and Figure 8, offer the circular hole of slightly larger in diameter respectively, and have a gap slot at the periphery of preceding pipe circular hole and match with the boss that preset in lock body 1 outside in the anti-theft column lock external diameter at the preceding pipe and the vertical tube of front fork of bicycle.

As shown in Figure 2, when anti-theft column lock is in opening, lock dog 2 is imbedded in the lock body 1, be inserted in the lockhole of bicycle, the gap slot chucking location of anti-theft column lock outside boss and bicycle front tube, then by key rotary locking cylinder 3, the part of lock dog 2 ejects lock body 1 (as shown in Figure 1) along groove, boss and the lock dog 2 that place vertical tube of front fork of anti-theft column lock this moment by the outside is locked in a fixed angle with the preceding pipe and the vertical tube of front fork of bicycle, extracts key and realizes bicycle handle bar's locking.

When unlocking, only need key is inserted in the lock core 3, rotary locking cylinder 3 lock dogs return to the position of Fig. 2 under action of the spring, then anti-theft column lock is extracted, and bicycle handle bar rotates freely.

Claims (2)

1, a kind of concealed anti-theft lock for bicycle, it is characterized in that when spring lock is in opening, along perpendicular to axial direction the offering of lock body (1) " in " the font depth recess, and offer a groove in the corresponding position of lock core (3), in groove, be equipped with one with its free-running fit and can move up and down " in " the circular lock dog (2) of font, on the protruding axle in the both sides of lock dog (2), spring (4) is housed respectively, the lock tube (5) outer by lock body (1) compresses the location, offer one and the cooresponding notch of lock dog (2) diameter in the lock tube (5) and the corresponding position of lock dog (2), the outside of lock body (1) is provided with along the boss of parallel axes direction, preceding pipe and vertical tube of front fork at bicycle are offered and the cooresponding circular hole of anti-theft column lock diameter, and are provided with the gap slot that matches with anti-theft column lock outside boss at the periphery of preceding pipe circular hole.

2, according to the concealed anti-theft lock for bicycle of claim 1, the profile that it is characterized in that lock body (1) and lock tube (5) is outer thick interior thin conically shaped body, the preceding pipe of bicycle and the circular hole of vertical tube of front fork are outer thick interior thin taper shape, and match with the coned face of anti-theft column lock.

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