CN2129809Y - Code bicycle anti-theft lock - Google Patents

Abstract

The utility model relates to a code anti-theft lock for a bicycle, belonging to the field of the bicycle. A lock case comprises four lock seats and a lock cover and is plugged by a male and female dovetail groove, the inner part of the lock case is provided with a lock rod which is fastened with a locking screw rod and is pulled by a spring, and the locking screw rod is provided with a thread groove and the ratchet wheel of an annular groove. A code sleeve is sheathed on the locking screw rod, a pin on the code sleeve is driven to move by rotating the code sleeve along the inner side of the thread groove, and the locking screw rod can be moved up and down and the lock can be opened and closed. The utility model has the advantage of strong pry-proof and confidential performance, has the anti-theft function, and is the good anti-theft lock for the bicycle.

Description

Code bicycle anti-theft lock

The utility model belongs to a kind of bicycle lock, particularly a kind of number formula anti-theft lock for bicycle.

The old-fashioned cylinder lock of present bicycle lock is comparatively general, this cylinder lock is to be easy to pry open lock steal car or with key the lock cover is opened for the burglar, prevent that in order to solve the burglar from prying open bicycle lock or overlap out, a lot of people have done many research in this respect, as Chinese patent application number is 88212152.9 bicycle theft-prevention safety locks, it be do with lock box as a whole, the lock core driven gear is driven again the structure of locking bar, though this lock has certain advantage to preventing picking lock, but it does not leave with the unblank structure of core of key cover, sometimes can be opened with key cover by others, next is the lock of this gear transmission structure, gruelling when opening lock, time-consuming, himself defective is arranged.

The purpose of this utility model provides a kind of number formula anti-theft lock for bicycle that can use number rotating switch lock and lock box not to pry open.

The utility model is realized with following mode, number formula anti-theft lock for bicycle is to connect locking bar with spring in lock box, the dovetail groove of the tie down screw termination in the lock box and the dovetail groove snapping of locking bar termination shut, on tie down screw, have thread groove and cannelure ratchet, an inlet is arranged between cannelure ratchet and the thread groove, be sleeved on the tie down screw with the number rotary sleeve on the lock box, radial hole installing pin top pressure spring is arranged in the number rotary sleeve, pin is inserted in cannelure ratchet and the thread groove.The number rotation that is sleeved on the tie down screw is with two or more, and the corresponding cannelure ratchet of each number rotary sleeve has the corresponding one group of cannelure ratchet that upper and lower both direction is opposite of one or two number rotary sleeve.Lock box is to be welded or riveted by locking closure and lock to constitute, or by connecting locking closure and lock with the male and female dovetail groove, fixes with being sold inside the country, and lock is spliced by four male and female dovetail grooves.

The utility model number formula anti-theft lock for bicycle is because employing monolithic locking closure and lock are also used sold inside the country fixing with male and female dovetail groove connecting mode, has stronger pick-proof performance, adopt pin in the number rotary sleeve that the inlet of the cannelure ratchet on the tie down screw and thread groove is checked the number and lifting and reduction tie down screw and closing unblanked, as adopt eight predetermined numbers to want luckily to open lock by number, then need rotate the chance that 16777216 ability of number cover are once luckily opened lock.This just we can say and does not know that number is impossible arbitrarily open lock that it has stronger confidentiality, can play antitheft effect, and need not to use key operated lock.

Fig. 1 is the utility model structural representation

Fig. 2 is the A-A view of Fig. 1

Fig. 3 is the B-B view of Fig. 1

Fig. 4 is the structural representation of tie down screw (4)

Fig. 5 is the H-H sectional view of Fig. 4

Fig. 6 is the rear elevation of Fig. 1.

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

The utility model anti-theft lock for bicycle is made up of lock box (1), locking bar (3), tie down screw (4) and number rotary sleeve (8), as shown in Figure 1.Lock box (1) is to be formed with the dovetail groove plug-in mounting that male and female cooperates by locking closure (11) and lock (12), as Fig. 1, Fig. 2, shown in Figure 3, the locking closure (11) in the exit of locking bar (2) and tie down screw (4) and lock (12) go up insert with sold inside the country (13) fixing.Locking closure (11) is whole, lock (12) be by (18), (19), (20), (21) four cooperate dovetail groove to be spliced with male and female, as shown in Figure 6, it is to be convenient to processing and assembling that lock (12) is resolved into four, Zu Zhuan lock box in this way, have comparatively ideal pick-proof performance, can be described as basically and can't pry open.Unless whole lock is destroyed.Certainly lock box (1) also can adopt welding or riveted joint locking closure (11) and lock (12).One locking bar (3) is arranged in lock box (1), the one end is be connected and fixed termination in lock box (1) of spring (2), the handle of moving on the locking bar (3) (15) can drive locking bar (3) arc track motion along lock box (1) inner chamber in lock box (1), and spring (2) can retract locking bar (2) at lockset position of coupler.Another side in lock box (1) has a tie down screw (4), tie down screw (4) with locking bar (3) but the termination on the dovetail groove snapping that male and female cooperates respectively arranged and shut, the top of tie down screw (4) is a bar that has thread groove (6) (6) and cannelure ratchet (5), as Fig. 1 and Fig. 4, shown in Figure 5, tie down screw (4) passes lower end cover (16) on the lock box (1) and upper end and overlaps (17) and be contained in the lock box (1), tie down screw (4) has thread groove (6) and cannelure ratchet (5) between lower end cover (16) and upper end cover (17), and be set with number rotary sleeve (8) thereon, number rotary sleeve (8) can be that two or more are stacked on the tie down screw (4), this example adopts eight, footpath in each number rotary sleeve (8) upwards has the hole, with pin (9) spring (10) that bearing down on one, pin (9), be close in the thread groove (6) and cannelure ratchet (5) on the tie down screw (4), and there is an inlet (7) pin (9) that rotation number rotary sleeve (8) drives in it between thread groove (6) and the cannelure ratchet (5) and on ratchet (5), turns to inlet (7), counter-rotation can forward pin (9) in the thread groove (6) again, and tie down screw (4) is moved up and down, in eight number rotary sleeves (8), there is one on the corresponding tie down screws of two rotary sleeves (4) to go up ratchet and a bottom ratchet wheel, and the direction of two ratchets is opposite, the only corresponding ratchet of all the other six rotary sleeves, this is to confuse for the number of will unblanking after unblanking, be used to maintain secrecy, just when shutting, to just can shut, in like manner also can be designed to the structure that a number is shut here two numbers.Rotate rotary sleeve (8) and drive tie down screw (4) and do upper and lowerly when mobile for making, the unlikely rotation of tie down screw (4) is provided with a bearing pin (14) and is inserted in the groove on the tie down screw (4) in lower end cover (16).The process of unblanking is after the numeral on each number rotary sleeve (8) is rotated the predetermined number of unblanking along a direction, allowing each number cover rotate the pin (9) that can make in the number cover (8) simultaneously directly enters the thread groove (6) on the tie down screw (4) from ratchet (5) end simultaneously and makes tie down screw (4) do axially to promote, thereby the termination dovetail groove hasp that makes locking bar (3) and tie down screw (4) takes off and colludes, locking bar (3) is under the effect of spring (2), retract lock is opened, just can tie down screw (4) be moved down counter-rotation number cover vertically as long as look for when shutting to two numbers, depress handle (15), pull out locking bar (3), it is available dovetail groove snapping and shutting, numeral on the eight number covers (8) is not as long as one of them numeral is when conforming to, pin (9) on the number cover (8) just can only be close to ratchet surface and beat in the cannelure on the tie down screw (4), tie down screw is moved axially.

Claims (3)

1, a kind of number formula anti-theft lock for bicycle, it is included in the lock box (1) and connects locking bar (3) with spring (2), it is characterized in that tie down screw (4) is arranged in lock box (1), shut with the dovetail groove of its termination and the dovetail groove snapping of locking bar (3) termination, on tie down screw (4), have thread groove (6) and cannelure ratchet (5), between annular ratchet (5) and the thread groove (6) inlet (7) is arranged, upward be sleeved on the tie down screw (4) at lock box (1) with number rotary sleeve (8), radial hole installing pin (9) top pressure spring (10) is arranged in the number rotary sleeve (8), and pin (9) is inserted in cannelure ratchet (5) and the thread groove (6).

2, theftproof lock according to claim 1, the number rotary sleeve (8) that it is characterized in that being sleeved on the tie down screw (4) has two or more, the corresponding cannelure ratchet (5) of each number rotary sleeve (8) has the opposite cannelure ratchet (5) of the corresponding one group of upper and lower both direction of one or two number rotary sleeve (8).

3, theftproof lock according to claim 1, it is characterized in that lock box (1) is to be made of locking closure (11) and lock (12) welding or riveted joint, or by connecting locking closure (11) and lock (12) with the male and female dovetail groove, fixing with sold inside the country (13), lock (12) is spliced by four public dovetail grooves.

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