CN2259346Y

CN2259346Y - Mortice lock for bicycle

Info

Publication number: CN2259346Y
Application number: CN 96225372
Authority: CN
Inventors: 乔勤
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-07
Filing date: 1996-02-07
Publication date: 1997-08-13
Anticipated expiration: 2006-02-07

Abstract

The utility model belongs to the improvement on a lock for a bicycle. The middle part of a lock body arranged in a vertical tube of a front fork is laterally provided with a lock core with safety marbles corresponding to four to five key marbles at the upper part of the lock body, and one to two telescopic unlocking shifting pins are arranged along the axial direction of the lock core. When lock for a bicycle is locked and unlocked, a safety ballistic trajectory on the lock core is corresponding to different key ballistic trajectories on the lock body. Because the exposed part of the utility model is only the end surface of the lock core, the utility model is difficult to prise or smash; thus, the utility model has the advantage of high prising-proof performance; because the front fork of the bicycle is positioned at the corner when the utility model is locked, the bicycle can not be pushed even a back wheel is lifted; thus, the utility model has the advantage of high theft-proof performance.

Description

A kind of built-in bicycle lock

The utility model belongs to the improvement of bicycle lock.

At present people common bicycle lock be u-shaped lock or chain lock, u-shaped lock is exposed to outside the car body fully, and is destroyed easily, lock destroys the back the various performances and the outward appearance of bicycle is had no effect, the burglar can ride away bicycle and not under a cloud; Chain lock is except that existing above-mentioned shortcoming, and use is inconvenient.It is not pry open that these two kinds of locks had both made, and also liftable trailing wheel pushes away away car.

The purpose of this utility model is the shortcoming at above-mentioned existence, provides a kind of lock body not to be exposed to outside the car body, be difficult for destroyed, the bicycle lock that the pick-proof performance is good.

Technical essential of the present utility model is: be loaded on lock body (6) middle part in the vertical tube of front fork (22), horizontally set has the lock core (4) with the corresponding insurance pellet shot from a slingshot of 4～5 the crucial pellets shot from a slingshot in lock body top (2), along lock core axially have 1～2 can stretch by with the retraction lock core in the finger of unblanking (10); When locking or unlatching, the insurance trajectory on the lock core is corresponding to crucial trajectories different on the lock body.The block (9) that lock body (6) bottom has the finger (10) of can being unblanked to stir is provided with stopper spring (7) between the base plate of the lower end of block (9) and lock body (6).Key opening part on the lock core (4) is embedded with anti-extrusion bonding jumper (27), has 1～3 group of pellet shot from a slingshot hole on the lock core (4).Right when locking or opening, block is in behind the lock core or the lock body bottom.After the locking of this lock, front fork promptly is lockable, and can't destroy lock-out state by the dismounting front fork.If unblank with failure mode, will destroy vehicle frame or front fork, this makes the burglar after prying open lock car to be ridden away.

Exsertion part of the present utility model only is the lock core end face, so be difficult for being pried open or breaking, makes that its pick-proof performance is good.Because the timer-operated bicycle front fork of lock is to be positioned in the turning, has both made and has lifted trailing wheel and can not carry out, the burglar is difficult to remove bicycle, and theftproof performance is good.It is simple in structure, and is easy to install, is applicable to that the bicycle of various models is installed and used.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 removes the birds-eye view of anti-lead cover for Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is that the B of Fig. 1 is to view.

Fig. 5 is a lock core outside drawing of the present utility model.

Fig. 6 is the birds-eye view of Fig. 5; The S that marks is a pitch-row among the figure, and L is pitch-row between group.

Fig. 7 is the backplan of Fig. 5.

Fig. 8 is the C-C view of Fig. 5.

Fig. 9 is that the E of Fig. 5 is to view.

Figure 10 is an assembling scheme drawing of the present utility model.

Figure 11 is installation site figure of the present utility model.

From accompanying drawing as seen, 1～3 reducing pellet shot from a slingshot (12) is equipped with in the inboard of the crucial pellet shot from a slingshot in lock body (6) top (2), shows T shape (shown in Fig. 1 being 2); Lock body (6) bottom have can with the contacted block of the finger of unblanking (10) (9), be provided with stopper spring (7) between the bottom of the lower end of block (9) and lock body (6).On lock core (4) perisporium, have a straight line and an oblique line position-limited trough (5), a finger marble spring (3) is arranged in the finger trajectory of the finger of unblanking (10) tail end.The anti-extrusion bonding jumper (27) that the plug keyway opening part is embedded with also can adopt derby.The Front fork lock hole site of exposing the lock core end face is to open in the side of vertical tube of front fork (21) to well, and its perforate height is high more good more under the prerequisite that does not influence the handlebar lifting, and the steering angle of handlebar location is 25 °～55 °.The car built-in lock is installed in car body inside, and exposed parts has the lock core end face only.The end face of lock core (4) embeds 2～4 hard metal material cylinders (25), makes lock core can prevent that drilling from destroying.When the pellet shot from a slingshot hole on the lock core (4) was one group, its pitch-row S equated; When the pellet shot from a slingshot hole on the lock core (4) was 2～3 groups, pitch-row L was greater than S between its group.Lock body (6) upper surface is provided with anti-drilling lid (3), prevents to destroy in the top drilling, and the lock body bottom also can add anti-drilling lid if necessary.Under lock-out state, lock core (4) is blocked by block (9) can not retraction, has both made applied shock power, and lock core is directly passed to vertical tube of front fork (21) by block with impulsive force along its axis direction, so can't pound way and break lock core by dashing; At this moment, lock core is managed in the lockhole of (20) before having stretched into vehicle frame, and pipe before vertical tube of front fork and the vehicle frame is connected as a single entity, and can't sweep away lock body by vertical tube of front fork, also can't unload front fork and destroy lock-out state.This lock body is installed in the vertical tube of front fork (21), under stem (17) position, does not influence the lift adjustment of handlebar, also need not do any adjustment to former body construction.Vertical tube of front fork position of opening scope cross-sectional strength is checked through methods of mechanics, does not influence front fork original design intensity.Lock body (6) bottom is provided with the fastening positioning device that is made of holding screw (15) and two holding pins (16).During installation, after pipe (20) and vertical tube of front fork (21) are gone up boring before vehicle frame, this lock is lowered to from vertical tube of front fork is suitable for reading, the holding screw (15) of tightening the lock body bottom at end opening gets final product.

Use is: during unlatching, insert key and clockwise rotate lock core to limiting the position, the finger of unblanking this moment one goes to lowest order and block is depressed, inwardly push lock core, finger is entered in the lock core along the lock core axis, go back to lock core to lock core simultaneously and be located in the open position, this moment, lock core entered lock body fully.During locking, insert key, clockwise rotate lock core to limiting the position, lock core relies on the elastic force of the finger spring of unblanking to eject, and enters the lockhole on the seat tube.Go back to lock core and extract key, on the block bullet, stop lock core to return lock body at this moment.Be provided with telescopic pull-preventing pin (8) in the block of lock body (6) bottom.Pull-preventing pin (8) is to prevent that going into object from the key hole control depresses block and attempt to unblank used.When normally unblanking, lock core rotates, and pull-preventing pin is pressed into block (9), does not influence the downslide of block.

Among the figure 19 is the core screw, and 20 is the core screw mandrel, and 21 is pipe before the vehicle frame, and 24 is lockhole, and 25 is cant beam, and 26 is the lower shaft bowl.

Claims

1. built-in bicycle lock, have lock body and lock core, it is characterized in that being loaded on lock body (6) middle part in the vertical tube of front fork (12), horizontally set has the lock core (4) with the corresponding insurance pellet shot from a slingshot of 4～5 the crucial pellets shot from a slingshot in lock body top (2), along lock core (4) the finger of unblanking (10) in 1～2 extended and retraction lock core is arranged axially; When locking and unlatching, the insurance trajectory on the lock core (4) is gone up different crucial trajectories corresponding to lock body (6); The block (9) that lock body (6) bottom has the finger (10) of can being unblanked to stir is provided with stopper spring (7) between the base plate of the lower end of block (9) and lock body (6); Key opening part on the lock core (4) is embedded with anti-extrusion bonding jumper (27), has 1～3 group of pellet shot from a slingshot hole on the lock core (4).

2. according to the described built-in lock of claim 1, it is characterized in that 1～3 reducing pellet shot from a slingshot (12) is equipped with in the inboard of the crucial pellet shot from a slingshot in lock body (6) top (2).

3. according to the described built-in lock of claim 1, it is characterized in that having position-limited trough (5) on lock core (4) perisporium, the end face of lock core (4) embeds 2～4 hard metal material cylinders (25).

4. according to the described built-in lock of claim 1, it is characterized in that when the pellet shot from a slingshot hole on the lock core (4) is one group that its pitch-row S equates; When the pellet shot from a slingshot hole on the lock core (4) was 2～3 groups, pitch-row L was greater than S between its group.

5. according to the described built-in lock of claim 1, it is characterized in that lock body (6) bottom is provided with the fastening positioning device that is made of holding screw (15) and two holding pins (16).

6. according to the described built-in lock of claim 1, it is characterized in that lock body (6) upper surface is provided with anti-drilling lid (13).

7. according to the described built-in lock of claim 1, it is characterized in that being provided with telescopic pull-preventing pin (8) in the block of lock body (6) bottom.

8. according to the described built-in lock of claim 1, it is characterized in that the lockhole place of the preceding pipe of vehicle frame can be pressed into a borehole jack (23).