CN2433155Y

CN2433155Y - Built-in lock device for bicycle

Info

Publication number: CN2433155Y
Application number: CN99230050U
Authority: CN
Inventors: 万代义; 万代富
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-24
Filing date: 1999-11-24
Publication date: 2001-06-06
Anticipated expiration: 2009-11-24

Abstract

The utility model relates to an anti-theft device used for bicycles and man-power tricycles. The utility model is characterized in that lock pins, compression springs, positioning pins, pulley wheels and steel cables are arranged in a main lever and a slant lever of a triangle-shaped steel tube structure of the bicycle or the man-power tricycle respectively. A groove is arranged on a position where a centre shaft of a pedal shaft corresponds to a front fork shaft of the pedal shaft; the pulley wheel can be rotated by a key, then the lock pin is disengaged from the groove under the traction of the steel cable, and thus the bicycle can normally operate; the lock pin can be inserted into the groove under the action of the compression spring when the pulley wheel is reset by using the key, so the centre shaft and the front fork shaft are locked respectively, reaching the anti-theft purpose. The built-in lock of the utility model has the advantages of simple structure, low cost and reliable operation.

Description

The built-in bicycle lock device

The utility model is a kind of anti-joyride device that is applicable to bicycle, manual tricycle.

Existing bicycle, manual tricycle are parked for safety, often adopt the bright lock of patterns such as bolt-type, cable type next antitheft, are lost antitheft effect but this type of bright lock easily prizes, cut and bring loss and worried for the user of vast bicycle, manual tricycle.

To be that design is a kind of can't can play antitheft effect by sled, by the built-in lock device cut to the purpose of this utility model safely and reliably.

The purpose of this utility model is achieved in that opens a groove respectively on the axis of bicycle or three-wheel vehicle and preceding fork shaft, one cover Locking Device is set respectively in slash, the main thick stick on the spider of bicycle or three-wheel vehicle, insert or the disengaging groove with key-operated Locking Device, just can reach theft-proof purpose, safe and reliable again.

The built-in lock device of bicycle that the utility model is carried, manual tricycle, simple in structure, not only safe and reliable, and also cost is low, is easy to promote.

Now the utility model will be further described in conjunction with the accompanying drawings.

Fig. 1 is the scheme drawing of bicycle.

Fig. 2 is the built-in bicycle lock schematic representation of apparatus.

From Fig. 1, among Fig. 2 as can be seen, bicycle is mainly by front-wheel 1, preceding fork shaft 2, tap 3, vehicle body 4, cushion 5, rack for books and newspaper 6, trailing wheel 7, chain-driving 8, foot-operated handle 9, brake system compositions such as (not drawing among the figure), and the preceding triangle steel-tube construction of vehicle body 4 is by front fork thick stick 20, whippletree 19, main thick stick 18, slash 25 compositions such as grade, medium position in the present main thick stick 18 is provided with pulley 16, be provided with another pulley 17 again on the top of pulley 16, lower end in main thick stick 18 is provided with lock pin 12, on lock pin 12, have chute, locating dowel pin 27 is equipped with in position corresponding to this chute middle part in main thick stick 18, lock pin 12 can slide up and down along locating dowel pin 27 like this, corresponding equipped compression spring 13 on the lock pin 12, lock pin 12 usefulness steel ropes 15 are connected on the pulley 16, and the position of corresponding lock pin 12 has groove 24 on the rotation central axis 10 of foot-operated handle 9; Lock pin 22 is equipped with in upper end in slash 25, also have chute on the lock pin 22, medium position corresponding to this chute, locating dowel pin 26 is housed in slash 25, lock pin 22 also can slide up and down along locating dowel pin 26 like this, the correspondingly equipped compression spring 23 of lock pin 22, bottom and upper right side in the outer tube of axis 10 respectively are equipped with pulley 11, one of steel rope 14 is fixed on the lock pin 22, the other end also is fixed on the pulley 16 after then passing pulley 11 and walking around pulley 17, position corresponding to lock pin 22 on the preceding fork shaft 2 has groove 21, when bicycle stops fashionable, lock pin 12,22 respectively in groove 24 and the groove 21 on the preceding fork shaft 2 on the axis 10 inserted in the effect of

compression spring

13,23 down, the axis 10 of foot-operated handle 9 and preceding fork shaft 2 can not be rotated and locked.

When with key rotating pulley 16, steel rope 15 traction lock pins 12 overcome the effect of compression spring 13, lock pin 12 is moved up along locating dowel pin 27 and withdraw from groove 24 on the axis 10, pedal axis 10 just can rotate voluntarily like this, meanwhile, steel rope 14 also draws the effect that lock pin 22 overcomes spring 23, and lock pin 22 is moved down and the groove on the fork shaft 2 21 before withdrawing from along locating dowel pin 26, just revolution freely of fork shaft 2 like this, bicycle gets final product cruising.Moving of lock pin 12,22, except adopting pulley 16,17, steel wire is strong by 15, beyond 14 tractions, also can adopt rack-and-gear group (not drawing among the figure) to substitute and realize.Because above-mentioned built-in lock device is installed in main thick stick 18 and the slash 25, can pick-proof, anti-cutting and safe and reliable.

Claims

1, a kind of built-in bicycle lock device mainly is made up of front-wheel (1), preceding fork shaft (2), tap (3), vehicle body (4), cushion (5), rack for books and newspaper (6), trailing wheel (7), chain-driving (8), foot-operated handle (9), brake system etc., it is characterized in that:

Medium position in a, the main thick stick (18) is provided with pulley (16), be provided with another pulley (17) again on the top of pulley (16), lower end in main thick stick (18) is provided with lock pin (12), on lock pin (12), have chute, position corresponding to this chute middle part, locating dowel pin (27) is housed in main thick stick (18), lock pin (12) can slide up and down along locating dowel pin (27) like this, lock pin (12) is gone up the corresponding compression spring (13) that is fitted with, lock pin (12) moves up by pulley (16) and steel rope (15) traction, and the pressured spring that contracts (13) resets;

Lock pin (22) is equipped with in upper end in b, the slash (25), lock pin also has chute on (22), medium position corresponding to this chute, locating dowel pin (26) is housed in slash (25), lock pin (22) slides up and down along locating dowel pin (26) like this, and lock pin (22) is gone up equipped compression spring (23), and lock pin (22) is connected on the pulley (16) with the steel rope (14) of walking around pulley (17), traction moves down lock pin (22) by steel rope (14), and the pressured spring that contracts (23) resets;

Bottom and upper right side in the outer tube of c, axis (10) respectively are equipped with pulley (11);

Have groove (24) on d, the axis (10);

Have groove (21) on e, the preceding fork shaft (2);

Gear bar group is housed in f, main thick stick (18) and the slash (25) replaces pulley (16), (17) and steel rope (14), (15).