CN201129089Y

CN201129089Y - Improved antitheft lock

Info

Publication number: CN201129089Y
Application number: CNU2007200600839U
Authority: CN
Inventors: 姚华庭
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-10-08
Anticipated expiration: 2017-11-26

Abstract

The utility model discloses a modified anti-theft lock consisting of a U-shaped lock frame and a lock pin; wherein, the two opening ends of the U-shaped lock frame are provided with a lock sleeve and an axis sleeve; the lock pin includes a lock end and a tail end; the lock end is inserted into the lock sleeve; the tail end is inserted into the axis sleeve; the lock end is shaped as a cylinder, the side surface of which is provided with an axial groove; the inside of the lock sleeve is provided with a lock core which can rotate and lock closely with screws on the side surface of the lock end; an inlet of the lock sleeve is provided with a positioning part which matches with the shape of the groove and stops the lock pin from rotating when locking; the terminal of the tail end of the lock pin is provided with a lock cam for preventing the axis sleeve when locking. The anti-theft lock of the utility model has the advantages of strong anti-theft function, simple structure, easy making and low manufacturing cost.

Description

Improved theftproof lock

Technical field

The utility model relates to a kind of theftproof lock, particularly a kind of safe U type theftproof lock.

Background technology

Existing U type theftproof lock generally by lock pin, be provided with the U-shape lock frame of lock tube and axle sleeve, lock tube and axle sleeve are fixedly arranged on the two ends of U-shape lock frame, lock pin can be plugged in lock tube and the axle sleeve opening with kayser U-shape lock frame, lock pin comprises main shaft, be coupling in the lock end of lock tube and be coupling in the tail end of axle sleeve, is the Chinese utility model patent of ZL 01221005.6 as the patent No..Though existing U type theftproof lock has the function of pick-proof, anti-saw, anti-welding, but because its lock end is designed to cylindrical shape, when the A/F of artificial compression U-shape lock frame exposes tail end, firmly rotate lock pin then and just lock end whiz lock tube can be reached the theft purpose easily.Simultaneously, the lock tube and the cylinder-type lock end of existing theftproof lock are destroyed easily, cause the consequence that can't lock or unblank.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of prevent by compression or stretching U-shape lock frame unblank, safe, improved theftproof lock that cost of production is low.

Improved theftproof lock of the present utility model comprises U-shape lock frame, lock pin, and described U-shape lock frame opening two ends are provided with lock tube and axle sleeve, lock pin comprises lock end and tail end, and the lock end is plugged in the lock tube, and tail end is socketed in the axle sleeve, it is characterized in that: described lock end is a cylinder, and its side is provided with axial notch; Installing can screw the lock core of locking with the screw thread on the lock end side surface in the lock tube, and lock tube inserts and mouthful is provided with and the groove shapes location division that the jam lock pin rotates when the locking that is complementary, and it is protruding that the tail end end of lock pin is provided with the card of jam axle sleeve when locking.

Being shaped as of described lock end cross section is fan-shaped or semicircle.

The cross section of described lock end is the cross section that major arc and string constitute.

Theftproof lock of the present utility model, the lock end is provided with the cylinder of axial notch for the side, lock pin is inserted the entrance location division identical with the shape of groove is set, even the opening of compression U-shape lock frame exposes the tail end of lock pin like this, also can't rotate lock pin unblanks, and because the card convex clip resistance axle sleeve of lock core locking lock end, lock pin tail end, can't be to extending out the opening that draws the U-shape lock frame, thereby can't illegally unblank, destroy theftproof lock and reach the theft purpose, and anti-theft lock structure of the present utility model is simple, processes simple and easy, cheap for manufacturing cost.

Description of drawings

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is the structure chart that the lock end inserts mouth among the embodiment one;

Fig. 3 is the front view of lock pin among the embodiment one;

Fig. 4 is the stereogram of lock pin among the embodiment one.

The specific embodiment

As shown in Figure 1, the utility model comprises U-shape lock frame 1, lock pin 4, and U-shape lock frame 1 opening two ends are provided with lock tube 2 and axle sleeve 3.Lock pin 4 comprises lock end 41 and tail end 42, lock end 41 can be plugged in the lock tube 2, and tail end 42 can be interspersed in the axle sleeve 3, and the end of tail end 42 is provided with the card protruding 43 of jam axle sleeve 3 when locking, block protruding 43 and protrude from the lock pin external surface, after tail end 42 inserts axle sleeve 3, block axle sleeve 3.Installings can screw the lock core 5 of locking with the screw thread on lock end 41 external surfaces in the lock tube 2, and lock core 5 is driven lock tube 2 in by key 6 and rotates, thus precession or recess lock and hold 41.

As Fig. 4, lock end 41 is a cylinder, its side is provided with axial notch, make the lock end be irregular cylinder, thereby the cross section of lock end be the cross section that remaining fan-shaped, semicircle or major arc and string constitute after removing groove on the disc, lock hold 41 cross section also but the plane that constitutes by two sections major arcs or minor arc.As Fig. 2, lock tube 2 is being inserted the location division 21 that the entrance is provided with and groove shapes is complementary, but the rotation when locking of these location division 21 jam lock pins 4 can only be unblanked by key 6 rotational lock cores 5 when making locking.After lock end 41 inserted lock tubes 2, groove part formed space 22, and was arranged with the screw thread that can screw with lock core 5 on the circular arc portion of lock end 41 sides.

After lock pin 2 inserts lock tubes 2 by axle sleeve 3, block protruding 43 sides that just can block axle sleeve, key 6 screws locking to drive lock core 5 with lock end 41.After the locking,, block protruding 43 and block axle sleeve 3, thereby can't under lock-out state, draw U-shape lock frame 1 to extending out because lock core withstands the lock end; Because location division 21 snaps in the groove on lock end 41 sides,, also can't rotate lock pin 4 and unblank, thereby can reach good anti-theft effect again even expose tail end 42 behind the opening of compression U-shape lock frame 1.

Embodiment one

Shown in Fig. 2～4, the cross section of lock end 41 is semicircle, and its side cambered surface part external surface is provided with screw thread to screw locking with lock core 5.As Fig. 2, in order to match with the shape of locking end 41, location division 21 also is semicircle, and lock end 41 and location division 21 are at slotting entrance formation rule cylinder.After lock end 41 inserts lock tube 2,, make lock core 5 and lock end 41 screw locking by key 6 rotary locking cylinders 5.In the present embodiment, the structure of other parts of theftproof lock is identical with specific embodiment part, does not give unnecessary details at this.

The lock end also can be the cylinder that is made of multistage major arc or minor arc, as long as the shape of location division is identical with the shape of column side face groove, can limits lock pin and can't rotate after inserting lock tube, all belongs to the scope of this patent protection.

Claims

1, a kind of improved theftproof lock comprises U-shape lock frame, lock pin, and described U-shape lock frame opening two ends are provided with lock tube and axle sleeve, lock pin comprises lock end and tail end, and wherein the lock end is plugged in the lock tube, and tail end is socketed in the axle sleeve, it is characterized in that: described lock end is a cylinder, and its side is provided with axial notch; Installing can screw the lock core of locking with the screw thread on the lock end side surface in the lock tube, and lock tube inserts and mouthful is provided with and the groove shapes location division that the jam lock pin rotates when the locking that is complementary, and it is protruding that the tail end end of lock pin is provided with the card of jam axle sleeve when locking.

2, a kind of improved theftproof lock according to claim 1, it is characterized in that: being shaped as of described lock end cross section is fan-shaped or semicircle.

3, a kind of improved theftproof lock according to claim 1 is characterized in that: the cross section of described lock end is the cross section that major arc and string constitute.