CN2289861Y

CN2289861Y - Anti-theft lock fitted in bicycle front fork pipe shoulder

Info

Publication number: CN2289861Y
Application number: CN 97200224
Authority: CN
Inventors: 刘平
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-03
Filing date: 1997-01-03
Publication date: 1998-09-02
Anticipated expiration: 2007-01-03

Abstract

The utility model relates to an anti-theft lock for front fork pipe shoulders of bicycles, which belongs to an anti-theft bicycle lock. The utility model is characteristics in that a lower axle cap of a straight pipe of the front part of a bicycle tripod is changed into an axle cap which is provided with a projecting lune -shaped shoulder; three locking holes which can not be penetrated through are punched on the shoulder from bottom to top; a hole is drilled on the shoulder part of a front fork pipe; a lock pin is installed in the hole; a lock body in installed in the shoulder of the front fork pipe (a left front fork pipe or a right front fork pipe); the end part of a lock core adopts an eccentric pin or a gear elevating locking pin. Because the lock is hidden in the pipe shoulder of a bicycle, the utility model has the advantages of good invisibility, high anti-theft performance, simple structure and low cost; the utility model is especially suitable for bicycle manufacturers to install locks when bicycles are transported out of the manufacturers and provides convenience for customers.

Description

Bicycle front fork pipe shoulder theftproof lock

The utility model belongs to the bicycle lock that avoids theft.

The stolen case of bicycle is increasing, and people have thought thousand and one way to the antitheft problem of bicycle, but all undesirable.Existing bicycle lock is joined after greatly part has been bought bicycle, and all is the lock trailing wheel, because the restriction of itself structure, lock body is all exposed outside, as long as therefore thief possesses some simple tools used in crime, just can easily lock be pried open, car is stolen.

The purpose of this utility model is to break through the way of conventional lock wheel, provides a kind of bicycle tube that is installed in to take on inside, changes the antijoyride device of lock wheel for the preceding wheel location of locking.

The purpose of this utility model is to realize like this.

A kind of bicycle front fork pipe shoulder theftproof lock, it is characterized in that the anterior straight tube 1 lower gear bowl of bicycle tripod is changed into the shelves bowl 2 of an outstanding semilune shoulder, three lock holes that do not penetrate are arranged on the shoulder from the bottom up, take on 4 tops at front fork tube a hole is arranged, concentric with lock hole, lock pin 3 is installed in the hole, when the lock car, the lock pin upper end is positioned at lock hole, the lower end contacts with the off-centre or the gear of lock core 6 ends, lock body 5 is installed in a front fork left side or the right pipe shoulder, and lock core is concentric with lock body in lock body 5, and the end of lock core 6 is off-centre or gear.During for eccentric gear, the lock pin lower end is a tooth bar, to reach the purpose of lifting lock pin.

The utility model has the advantages that owing to lock in bicycle tube shoulder, so good concealment that anti-theft capability is strong, and is simple in structure, cost is low, is particularly suitable for cycle manufacturer and just installs when bicycle dispatches from the factory and lock, and makes things convenient for customers.

Fig. 1 is a front view of the present utility model,

Fig. 2 is a vertical view of the present utility model.

Describe operating principle of the present utility model in detail below in conjunction with accompanying drawing.When needs lock car, handle-bar is rotated to an angle, front-wheel and vehicle body constitute 15 °～45, key is inserted lockhole, and screw key makes lock pin upwards rise the lock hole of the bowl that files, and this moment, the position of front fork and front-wheel can't be rotated with regard to being fixed, at this moment because front-wheel and vehicle body constitute certain angle, car can only be turn-taked in the original place, can not travel by ancient line, can't ride.When need were used car, key inserted the lockhole rotation, makes lock pin leave lock hole, and this moment, front-wheel can rotate flexibly.

Claims

A kind of bicycle front fork pipe shoulder theftproof lock, it is characterized in that the anterior straight tube lower gear of bicycle tripod bowl is changed into the shelves bowl 2 of an outstanding semilune shoulder, three lock holes that do not penetrate are arranged on the shoulder from the bottom up, take on 4 tops at front fork tube a hole is arranged, concentric with lock hole, lock pin 3 is installed in the hole, when the lock car, the lock pin upper end is positioned at lock hole, and the lower end contacts with the off-centre or the gear of lock core 6 ends, and lock body 5 is installed in a front fork left side or the right pipe shoulder, lock core is concentric with lock body in lock body, the end of lock core 6 is off-centre or gear, and during for gear, the lower end of lock pin is a tooth bar.