CN2050867U

CN2050867U - Caliper type lock guarding against theft for bicycle

Info

Publication number: CN2050867U
Application number: CN 89201359
Authority: CN
Inventors: 侯明新
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-27
Filing date: 1989-01-27
Publication date: 1990-01-10

Abstract

The utility model discloses a caliper type lock guarding against theft for a bicycle, comprising two integrally stamping clamping rings. A lock core, a lock tongue, and a hollow lock groove are respectively arranged at the handle part of the clamping ring, when the two clamping ring are closed, the lock groove 7 is pressed into the lock cavity of the clamping ring 1, and the lock tongue tightly locks the two clamping rings under the action of a spring. The utility model has the advantages of good tightness, strong guarding against theft performance, beautiful appearance, convenient installation, and convenient operation.

Description

Caliper type lock guarding against theft for bicycle

The utility model relates to a kind of bicycle cylinder lock, particularly a kind of caliper brake Antipicking bicycle lock.

Existing bicycle lock has crab jaw type bicycle lock and wire rope (or chain type) to lock two kinds.The former is because its lock housing is to adopt two steel sheet punch formings, and lock core, dead bolt and returning spring are installed in the lock housing, make with closing-up again.This lock is easy to use, but poor stability, the cracksman can pry open lock housing as long as inject the sled of exerting oneself in the lock housing with bottle opener, expose dead bolt, provoke dead bolt with bottle opener again, returning spring can retract lock core, and lock is promptly opened, front and back only need second more than ten, and therefore, bicycle is stolen easily.The soft lock of wire rope or chain type then uses convenient inadequately, and the people that use on the historical facts or anecdotes border is also few.

The purpose of this utility model provides a kind of simple in structure, and is solid and reliable, is difficult to by the anti-theft lock for bicycle of tamper tool.

The utility model is to realize by following mode: this lock is made up of snap ring 1, snap ring 2, hollow rivet 4 and spring 3, because the handle portion of snap ring 1 has lock core 5 and dead bolt 6, the handle portion welding (or whole punch forming) of snap ring 2 has a hollow locked groove 7 that outwards protrudes, when snap ring 1 and snap ring 2 closures, locked groove is pressed in the lock chamber of snap ring 1, dead bolt moves earlier under the effect of tongue rear spring backward, after treating that locked groove and lock chamber all coincide, dead bolt puts in the endoporus of locked groove under the effect of spring, thereby lock locking, the snap ring pin is closed mutually.When unblanking, key is inserted in the lock cylinder 5, turn an angle, move backward thereby drive dead bolt, when dead bolt and locked groove disengaged, two snap rings were opened at following snap ring pin of the effect of spring 3.

Theftproof lock of the present utility model has simple in structure, the locking member good leak tightness, and the cracksman is difficult to instrument lock be pried open, and theftproof performance is strong, and is safe and reliable, aesthetic in appearance, easy to install and use.

Below in conjunction with accompanying drawing enforcement of the present utility model is described in further detail:

Fig. 1 is a structure sectional view of the present utility model.

As shown in Figure 1, snap ring 1 and snap ring 2 assemble after by whole punching press of steel sheet or segmental machining, the handle of snap ring 1 partly is processed into grooved, the front of groove has lock core hole and lock chamber, and lock cylinder 5 and dead bolt 6 are installed in lock core hole and the lock chamber, control dead bolt stretching in the lock chamber by the spring of inside between dead bolt and the lock core, welding (or whole punch forming) has the locked groove 7 of a hollow on the handle of snap ring 2, its position is corresponding with the lock chamber on the snap ring 1, and the locked groove endoporus is corresponding with the position of dead bolt.The ring pin of snap ring 2 strikes out hollow form, and the ring pin insertion for snap ring 1 is connected by hollow rivet 4 between snap ring 1 and the snap ring 2.

Claims

A kind of caliper brake anti-theft lock for bicycle, it is characterized in that snap ring 1 and snap ring 2 are respectively that integral body is stamped to form, a lock cylinder 5 and dead bolt 6 are arranged on the handle of snap ring 1, have on the handle of snap ring 2 to have in vain in one between 7, two snap rings of locked groove to be connected by hollow rivet 4.