CN2259469Y - Safe lock for bicycle - Google Patents

Abstract

The utility model relates to a safe lock for bicycles, which is characterized in that an anti-sawing wire and an anti-sawing sheet are arranged in the lock. The anti-sawing wire is positioned in a lock casing and is fixed on the lock casing; the anti-sawing sheet is fixed with a gear rack; through an anti-sawing steel ring, an anti-drill wire and a specific treatment for materials, the utility model has the advantages of reasonable structural design, easy production and easy and reliable use, and the lock can not be prized in any position of 360 DEG periphery of the lock.

Description

Safety lock for bicycle

The utility model relates to a kind of lock, particularly a kind of safety lock for bicycle, and it is applicable to the bicycle of any model.

Structure design gets comparatively rational bicycle safe lock as shown in Figure 1 in the prior art, it mainly by tapered end shell 1 ', tapered end 2 ', lock core 3 ', gear 4 ', tooth bar 5 ' and lock housing 6 ' form, tapered end shell 1 ' fixing with lock housing 6 ' welding, integral body is made with steel pipe, gear 4 ' be positioned at tapered end shell 1 ', tooth bar 5 ' be positioned at lock housing 6 ', and gear 4 ' with tooth bar 5 ' engagement, locking bolt 8 ' be positioned at tooth bar 5 ' an end, and with tooth bar 5 ' fuse, 7 ' be installing plate, be installed on the bicycle by it; During use, key is inserted lock core 3 ' interior and rotation, gear 4 ' just rotation thereupon drives tooth bar 5 ' interlock at this moment, makes locking bolt 8 ' unlatching, when closing, only need use the key backward rotation get final product.But also there is following shortcoming in actual use in the bicycle safe of this structure lock: 1, the insufficient strength of locking bolt and tooth bar, available cut energetically and hacksaw makes it to lose the function of lock; 2, the structure design of tapered end shell and lock housing is reasonable inadequately, and still available cutting energetically and hacksaw destruction makes lock lose function.So the shortcoming that above structure caused is had an opportunity to take advantage of auto theft person, thereby make robber's car become a present great society problem.

The purpose of this utility model is to overcome existing above-mentioned deficiency in the prior art, and provide a kind of reasonable in design, the lock 360 ° of circumference range in can't make the lock loss of function safety lock for bicycle.

The purpose that the utility model proposed can be achieved through the following technical solutions: also be provided with anti-saw steel wire and anti-saw blade in this bicycle car safety lock, antirust steel wire is positioned at lock housing, and fixes with lock housing, and anti-saw blade is then fixed with tooth bar.

The purpose that the utility model proposed can also be come further perfect by the following technical programs: be fixed with anti-saw steel loop in the tapered end shell, and be embedded with anti-drilling steel wire on lock core.

Description of drawings is as follows:

Fig. 1 is the structural representation of bicycle lock in the prior art.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is an A-A sectional view of the present utility model.

Following the utility model is the structure accompanying drawing, and is described in further detail by embodiment.

Referring to Fig. 2, Fig. 3, this safety lock mainly is made up of tapered end shell 1, tapered end 2, lock core 3, gear 4, tooth bar 5, anti-locking bolt 12. anti-saw blades 11, anti-saw steel wire 13 and the lock housing 6 of cutting, gear 4 is positioned at tapered end shell 1, tooth bar 5 is positioned at lock housing 6, and gear 4 and tooth bar 5 engagements, its middle gear 4 is coaxial with lock core 3, tooth bar 5 be shaped as flat fan-like pattern; Tapered end shell 1 is then affixed with lock housing 6, as welding; For strengthening the intensity and the rigidity of lock body, in lock housing 6, be fixed with anti-saw steel wire 13, this anti-saw steel wire 13 can be fixing with lock housing 6 by welding, and be fixed with anti-saw blade 11 on tooth bar 5, and anti-saw blade 11 can be tied on tooth bar 5 by the spot welding weldering.Anti-saw steel wire 13 is through Quenching Treatment, and it can't be sawed into, anti-11 available high-quality manganese steel of saw blade through Quenching Treatment with hacksaw, also can't saw into.In addition, prevent that cutting locking bolt 12 can fuse with tooth bar 5, also can be connected with tooth bar 5 by riveted joint, it is bigger than locking bolt diameter of the prior art anti-to cut locking bolt 12, again through specially treated, cut energetically and can't cut off with manpower, have and prevent cutting function, solved the fatal weak link of present bicycle lock.Simultaneously, for reaching better safety effect, anti-saw steel loop 10 is installed also in tapered end shell 1, this anti-saw steel loop 10 tightly is press-fit in the inwall of tapered end shell 1, material also be high-quality manganese steel through Quenching Treatment, make it to saw into; Anti-drilling steel wire 9 is one a section thin short steel wire through hardening, and it is flush-mounted on the lock core 3 tightly, makes it and to unblank with the broken lock core 3 of electric drill brill, and the rear end of tapered end 2 is dead with bridge welding, makes it to prize.

6 is a ring-type lock housing, it by with the welding of reinforcing rib 14 and installing plate 7, the intensity of lock body and rigidity are strengthened greatly.

During use, lock is contained on the bicycle, inserts lock core 3 and rotation,,, drive tooth bar 5 thus and cut locking bolt 12 interlocks, make to lock and open with anti-so driven gear 4 rotates because lock core 3 is coaxial with gear 4 with key by installing plate 7; When closing, only need with the key backward rotation, then key to be transferred to and to realize lock-bit.

The utility model compared with prior art has the following advantages: 1, structural design is closed Reason, intensity is big, good rigidly, anti-sled performance height: owing to designed anti-saw blade and anti-saw steel wire, And set up anti-saw steel loop and anti-drilling steel wire, and locking bolt has been done overstriking and the processing of hardening, make Be locked in 360. In the circumference range, can not in any direction lock be destroyed and make it to open, Effectively solved the fatal weak spot of present bicycle lock, made the intensity of lock and rigidity greatly Ground improves; 2, lock body is made with the overall steel pipe, has eliminated the slit that may enter sled everywhere, Simultaneously, manufacturing, use all easily, reliably, have preferably practical value, are present The regeneration product of bicycle lock.

Claims (4)

1, a kind of safety lock for bicycle, comprise tapered end shell, tapered end, lock core, gear, tooth bar, locking bolt and lock housing, gear is positioned at the tapered end shell, tooth bar is positioned at lock housing, and the wheel and rack engagement, and tapered end shell and lock housing are affixed, it is characterized in that: also be provided with anti-saw steel wire (13) and anti-saw blade (11), anti-saw steel wire (13) is positioned at lock housing (6), and fixing with lock housing (6), and anti-saw blade (11) is then fixing with tooth bar (5).

2, safety lock as claimed in claim 1 is characterized in that: also be provided with anti-saw steel loop (10) in tapered end shell (1), this anti-saw steel loop (10) is press-fit in the inwall of tapered end shell (1).

3, safety lock as claimed in claim 1 is characterized in that: can be embedded with anti-drilling steel wire (9) on said lock core (3).

4, safety lock as claimed in claim 1 is characterized in that: preventing cutting locking bolt (12) can be affixed with an end of tooth bar (5).

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