CN201059113Y

CN201059113Y - Theftproof lock for bicycle

Info

Publication number: CN201059113Y
Application number: CNU2007200801170U
Authority: CN
Inventors: 黄迪明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-26
Filing date: 2007-06-26
Publication date: 2008-05-14
Anticipated expiration: 2017-06-26

Abstract

A burglarproof lock of a bicycle comprises lock bodies, a lock core, a lock tongue and a protective cylinder; two lock bodies are fixed in the protective cylinder back to back; a lug boss is fixed on the protective cylinder; a screw thread pylome is arranged on the lug boss; two ends of the protective cylinder are respectively fixed with a protective ring; the protective rings and the lock core are separated; a circular hole on the protective ring has the same diameter with the lock core; a connecting rod is fixed on the protective cylinder; the other end of the connecting rod is hinged with a cambered rod; the other end of the cambered rod is provided with a slide block which is positioned in a sliding cylinder; the other end of the sliding cylinder is fixed with a lock head; a screw thread section and a lock groove are made in the lock head; the screw thread section of the lock head is matched with the screw thread through hole of the lug boss; the lock tongue of the lock core can extend to the lock groove. The utility model is characterized in convenient use, safety, reliability, uneasy to be prised, and good burglarproof performance, and is widely used as an ideal burglarproof lock of the bicycle, electromotor, motorcycle, etc.

Description

Anti-theft lock for bicycle

Technical field

The utility model relates to a kind of lockset, especially relates to the theftproof lock of a kind of bicycle, tricycle, electric motor car, motorcycle.

Background technology

The bicycle price is low, esy to use, safe and reliable, pollution-free, become the desirable vehicles of people's working and learning, but bicycle is stolen easily.At present, commercially available bicycle lock mainly adopts the method for key cylinder, and this lock is pried open by robber's brute force easily, and people have developed various theftproof locks, but effect is unsatisfactory.

Summary of the invention

The purpose of this utility model provide a kind of esy to use, safe and reliable, be difficult for prying open, anti-theft lock for bicycle that theftproof performance is good.

For achieving the above object, the utility model is taked following design scheme:

A kind of anti-theft lock for bicycle comprises lock body, lock core, dead bolt, tapered end, and a protection cylinder is set, and described two lock bodies is leaned against be fixed on privately in the protection cylinder; Fix a boss on the protection cylinder, a through hole is set on the boss, two ends of protection cylinder are fixed a protective ring respectively, and protective ring and lock core separate; Circular hole on the protective ring is identical with the diameter of lock core; One end of a connecting rod is fixed on the protection cylinder, the hinged bow of the other end, and the other end of bow is fixed a tapered end, is shaped on locked groove on the tapered end, and tapered end inserts in the through hole of boss, and the dead bolt in the lock core can stretch into the locked groove hole;

Be shaped on screw thread in the through hole of described boss, be shaped on thread segment on the tapered end.

Because the utility model has been fixed protection cylinder on lock body, protective ring and lock core are from a distance, so be difficult for prying open lock core, and tapered end is taked to be threaded with the boss on the protection cylinder, tapered end and boss are held together, so also be difficult for prying open from tapered end, improved theftproof performance greatly.In protection cylinder, lean against two lock bodies are installed privately, open two locks simultaneously and theftproof lock could be opened, further improved the theftproof performance of lock, guaranteed the safety of bicycle.

Description of drawings

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

Fig. 2 is the left view of Fig. 1.

Be labeled as among the figure: 1-lock body, 2-lock core, 3-dead bolt, 4-tapered end, 5-slide block, the sliding cylinder of 6-, 7-bow, 8-thread segment, 9-boss, 10-locked groove, 11-circular hole, 12-protective ring, 13-protection cylinder, 14-connecting rod, 15-hinge.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, the utility model comprises lock body 1, lock core 2, dead bolt 3, tapered end 4, and a protection cylinder 13 is set, and two lock bodies 1 is leaned against be fixed on privately in the protection cylinder 13.A boss 9 is fixed at the middle part of protection cylinder 13, is shaped on a through hole that communicates with protection cylinder 13 on the boss 9; A protective ring 12 is fixed at the two ends of protection cylinder 13 respectively, and a circular hole 11 identical with lock core 2 diameters is arranged on the protective ring 12, and protective ring 12 separates with lock core 2, makes the instrument of stealer be difficult for putting into, and prevents that stealer is from the bad lock of lock core 2 sleds.A connecting rod 14 is fixed on the middle part of protection cylinder 13, the other end of connecting rod 14 hinge 15 hinged bows 7, a slide block 5 is set on the other end of bow 7, slide block 5 is arranged in the sliding cylinder 6, the other end of sliding cylinder 6 is fixed a tapered end 4, be shaped on locked groove 10 on the tapered end 4, the dead bolt 3 in the lock core 2 can stretch in the locked groove 10, and above-described part is made by metal.The purpose that 2 lock bodies 1 are set is the safety factor that increases lock.

In order to prevent that stealer is from tapered end 4 picking locks, as shown in Figure 1, in the through hole of boss 9, be shaped on screw thread, the relevant position of tapered end 4 is shaped on thread segment 8, when locking fashionable, thread segment on the tapered end 48 is screwed in the tapped through hole of boss 9, tapered end 4 and boss 9 are connected as a single entity, further improved theftproof performance.

Claims

1. an anti-theft lock for bicycle comprises lock body (1), lock core (2), dead bolt (3), tapered end (4), it is characterized in that: a protection cylinder (13) is set, described two lock bodies (1) are leaned against is fixed on privately in the protection cylinder (13); A boss (9) is set on the protection cylinder (13), a through hole is set on the boss (9); Two ends of protection cylinder (13) are fixed a protective ring (12) respectively, and protective ring (12) separates with lock core (2), and the circular hole (11) on the protective ring (12) is identical with the diameter of lock core (2); One end of a connecting rod (14) is fixed on the protection cylinder (13), the hinged bow of the other end (7), the other end of bow (7) is fixed a tapered end (4), be shaped on locked groove (10) on the tapered end (4), tapered end (4) inserts in the through hole of boss (9), and the dead bolt (3) in the lock core (2) can stretch in the locked groove (10).

2. anti-theft lock for bicycle according to claim 1 is characterized in that: be shaped on screw thread in the through hole of described boss (9), be shaped on thread segment (8) on the tapered end (4).