CN2509300Y

CN2509300Y - Antitheft lock

Info

Publication number: CN2509300Y
Application number: CN 01258692
Authority: CN
Inventors: 彭建华
Original assignee: Individual
Current assignee: Lei Xianming
Priority date: 2001-12-14
Filing date: 2001-12-14
Publication date: 2002-09-04
Anticipated expiration: 2011-12-14

Abstract

The utility model relates to a theft proof lock which comprises a U shape lock frame, a lock axis, a lock head sleeve and a lock axis sleeve; the two ends of the U shape lock frame are respectively fixed and connected with the lock head sleeve and the lock axis sleeve; the lock head sleeve is a cover shape body with a lock axis hole on the top; the lock axis passes through the lock axis sleeve and is inserted into the lock head sleeve through the lock axis hole; the hollow cavity of the lock head sleeve which is opposite with the lock axis hole is provided with an eccentric cylinder hollow cavity; the utility model is also provided with a rotating eccentric sleeve with a concentric round hole same with the lock axis hole on the top and an eccentric lock head sleeve middle part; a blocking ring is provided between the concentric round hole and the eccentric hollow cavity, and the back part is fixed with a mat with a though hole in the middle; the eccentric sleeve is sleeved in the lock head sleeve and the cylinder is inserted into the though hole; and the front part of the lock axis is provided with a ring socket and the blocking ring can be blocked in the socket. The utility model can be opened or locked by rotating one hundred degree as the improved lock axis and lock sleeve and is convenient to be operated. The lock axis is provided with an axis table to prevent the separating and position. Therefore the utility model has a simple structure, is convenient to be used and has a good theft proof effect.

Description

Theftproof lock

Technical field:

The utility model belongs to the lock class, particularly a kind of theftproof lock.

Background technology:

Lock with various anti-theft features has varied, and the theftproof lock of U-shaped lock frame also has much.But mostly be the lock of spring structure greatly, because a variety of causes, these locks are still easily pried open, are cut etc., and anti-theft effect is not ideal enough.Patent 98245972.6 anti-theft lock for motorcycle adopt at the two ends of U-shaped lock frame tapered end cover and shaft locking sleeve are set, and in the tapered end cover tapered end and swivel nut are installed, and pass shaft locking sleeve by threaded lock shaft, and it is interior and lock to screw in the tapered end cover again.This lock is because its special structure and material, can pick-proof, anti-saw, anti-beat etc.In addition, these locks are in order to be positioned at shaft locking sleeve and the lock shaft afterbody is provided with detent mechanism.Because these theftproof locks are to realize unblanking or locking by the helicitic texture in lock shaft and the tapered end cover, must rotate multi-turn during use, with lock the time, the groove of the locating convex block aligning shaft locking sleeve of lock shaft afterbody just can must be inserted.The troublesome poeration inconvenience.Have, inwardly push as by external force such as jack U-shaped being locked frame, make its distortion, lock shaft rotation easily comes off, and anti-theft effect is good inadequately.

Summary of the invention:

The purpose of this utility model provides a kind of switching lock and need not to rotate repeatedly multi-turn, and lock shaft passes in and out unrestricted theftproof lock, and this lock has overcome existing theftproof lock inconvenient operation, the dissatisfactory shortcoming of anti-theft effect.

Theftproof lock of the present utility model is locked frame, lock shaft, tapered end cover and shaft locking sleeve by U-shaped and is formed, the two ends of U-shaped lock frame are fixed connection lock headgear and shaft locking sleeve respectively, the tapered end cover is a cover-shaped body, the top has the lock shaft hole, lock shaft passes shaft locking sleeve and inserts the tapered end cover from the lock shaft hole, and the relative lock shaft of the cavity hole of described tapered end cover is an off-centre operation cylindricality cavity; One rotating eccentricity cover is arranged, and the top has the concentric circle holes identical with the lock shaft hole, and the middle part is an off-centre operation cylindricality cavity, forms a snap ring between concentric circle holes and the eccentric cavity, the rear portion fix have in the middle of one through hole packing ring; Eccentric bushing is inserted in the tapered end cover, refills and joins tapered end, and lock core inserts in the through hole of packing ring; Described lock shaft front portion has annular groove, and snap ring can snap in the groove.

As improvement of the present utility model, the through hole of described shaft locking sleeve is two sections not isometrical holes, and an inside sector hole diameter is greater than another section; The below that described lock shaft is positioned at annular groove is provided with a projection.

As further improvement of the utility model, the afterbody of described lock shaft has a boss.

The utility model is by improving lock shaft and tapered end nested structure, utilize the off-centre operation cylindricality cavity in rotating eccentricity cover and the tapered end cover to be the different centers of circle helicitic texture with the lock shaft hole instead, and the formation snap ring, snap ring is left left or the annular groove that snaps in lock shaft is realized unblanking or locking or the right rotation tapered end.Only need rotate during use half-turn both 180 ° just can open or locking, easy to operate.Lock shaft is provided with projection and boss, can prevent to come off and locate.The utility model is simple in structure, and is easy to use, good anti-theft effect.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model tapered end nested structure schematic diagram;

Fig. 3 is the utility model rotating eccentricity nested structure schematic diagram.

The specific embodiment:

Theftproof lock of the present utility model as shown in Figure 1, 2, 3 welds tapered end cover 3 and shaft locking sleeve 4 respectively at the two ends of U-shaped lock frame 1, and tapered end cover 3 is a cover-shaped body, and its top has lock shaft hole 16, and its cavity 15 relative lock shaft holes 16 are an off-centre operation cylindricality.Have one to be the rotating eccentricity cover 8 that covers shape, the top has the concentric circle holes 19 with lock shaft hole 16, and the middle part is eccentric cavity 20, forms a snap ring 11 between concentric circle holes 19 and the eccentric cavity 20, and the packing ring 6 of band through hole 7 in the middle of is fixed in the rear portion welding.During assembling, an end that rotating eccentricity is overlapped 8 belt washers 6 is inserted in the cavity 15 of tapered end cover 3 outwardly, is inserted in tapered end 17 then, and lock core 18 is inserted in the through hole 7, rotates key driven rotary eccentric bushing 8 and rotates.The through hole 5 of shaft locking sleeve 4 is two sections not isometrical holes, and an inside sector hole 14 slightly larger in diameter are in another section.The front portion of lock shaft 2 has an annular groove 10, and afterbody is provided with a boss 12, and a projection 13 is set below annular groove 10.When lock shaft 2 passes shaft locking sleeve 4, anteriorly insert in the tapered ends cover 3 from lock shaft hole 16, boss 12 just in time is against on the shaft locking sleeve 4, stops lock shaft to continue forward.The key clockwise direction changes 180 °, is rotated by lock core 18 driven rotary eccentric bushings 8, and snap ring 11 snaps in the annular groove 10, and lock shaft 2 is blocked, and finishes the process of locking.Key is rotated counterclockwise 180 °, and snap ring 11 leaves annular groove 10, and the circular hole 19 of rotating eccentricity cover 8 aligns with lock shaft hole 16, lock shaft 2 can be extracted out, finishes the process of unblanking.Projection 13 on the lock shaft 2 is against in the through hole 14, makes the lock shaft 2 can slippage from shaft locking sleeve 4.Each member of the present utility model all adopts firm metal material processing.

Claims

1, a kind of theftproof lock, form by U-shaped lock frame, lock shaft, tapered end cover and shaft locking sleeve, the two ends of U-shaped lock frame are fixed connection lock headgear and shaft locking sleeve respectively, the tapered end cover is a cover-shaped body, the top has the lock shaft hole, lock shaft passes shaft locking sleeve and inserts the tapered end cover from the lock shaft hole, it is characterized in that: the cavity (15) of described tapered end cover (3) lock shaft hole (16) relatively is an off-centre operation cylindricality cavity; One rotating eccentricity cover (8) is arranged, the top has the concentric circle holes (19) identical with lock shaft hole (16), the middle part be off-centre operation cylindricality cavity (20), between concentric circle holes (19) and the eccentric cavity (20) formation one snap ring (11), the rear portion fix one the centre have through hole (7) packing ring (6); Eccentric bushing (8) is inserted in the tapered end cover (3), refills to join tapered end (17), and lock core (18) inserts in the through hole (7) of packing ring (6); Described lock shaft (2) front portion has annular groove (10), and snap ring (11) can snap in the groove (10).

2, according to the described theftproof lock of claim 1, it is characterized in that: the through hole (5) of described shaft locking sleeve (4) is two sections not isometrical holes, and an inside sector hole (14) diameter is greater than another section; The below that described lock shaft (2) is positioned at annular groove (10) is provided with a projection (13).

3, according to claim 1 or 2 described theftproof locks, it is characterized in that: the afterbody of described lock shaft (2) has a boss (12).