CN2494411Y

CN2494411Y - Theftproof lock

Info

Publication number: CN2494411Y
Application number: CN 01231183
Authority: CN
Inventors: 陈伟君
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-06
Filing date: 2001-08-06
Publication date: 2002-06-05
Anticipated expiration: 2011-08-06

Abstract

The utility model relates to an anti-theft lock which comprises a U-shaped lock body, a lock body seat, a lock horizontal frame and a lock head sleeve, the two ends of the lock horizontal frame are separately fixed and connected with the lock body seat and the lock head sleeve, a rotation nut, a washer, a lock head and a sealing block are assembled in the lock head sleeve in turn, one end of the U-shaped lock body is movably connected with the lock body seat, the other end is inserted into the lock sleeve, the front of one end of the U-shaped lock body is thread, the thread is meshed with the rotation nut in the lock sleeve; two anti-drilling mashers are assembled between the lock head and the sealing block, a cross keyhole is arranged in the middle of the masher. The anti-theft of the utility model changes the U-shaped lock body which can be extracted entirely to a device whose one end is connected with the lock body seat, the case of lockpin slipping won't happen, the lock is used more conveniently. Otherwise, the lock is not easy to be prized up, broke open or drilled open by electric drill through the improvement of the structure of the rotation lock, the effect of anti-theft is more better. The lock has the advantages of simple structure, reasonable design and easy extension and utilization.

Description

Theftproof lock

Technical field:

The utility model relates to a kind of theftproof lock.

Background technology:

At present, the theftproof lock that no matter is motorcycle, iron gate or other purposes has various, patent 95229202.5 Lock for motorcycle for example, patent 96203965.9 antitheft U-shape locks etc., mostly be the lock of spring structure greatly, because a variety of causes, these locks are still easily pried open, are broken or cut, and anti-theft effect is undesirable.Patent 98245972.6 anti-theft lock for motorcycle disclose a kind of employing U-shaped lock frame, and tapered end cover and lockpin sleeve are set at its two ends, and assembling tapered end and swivel nut in the tapered end cover screw in tapered end again and lock in overlapping by threaded lock pin being passed lockpin sleeve.This lock is because its special structure and material, anti-theft effect is better, but, this lock is to finish locking and unlocking function by the spinning in and out of screw thread lock pin, when the screw thread lock pin is screwed out, slides out from lockpin sleeve easily and pounds the safety inadequately of hurting sb.'s feelings, use inconvenient, in addition, these locks are because lockhole directly exposes outside easy drilled opening to the open air.

Summary of the invention:

Theftproof lock of the present utility model is improved by the structure to the U-shaped theftproof lock, the theftproof lock that has solved prior art is easily pried open, is broken or opened and the imperfect problem of anti-theft effect with the electric drill brill, also overcome screw fastening latch structure theftproof lock and used inconvenience, the shortcoming of the easy landing of lock pin.

Technical solutions of the utility model are, this theftproof lock comprises U-shaped lock body, lock body seat, lock crossbearer and tapered end cover, lock crossbearer two ends are fixedly connected lock body seat and tapered end cover respectively, be equipped with swivel nut, packing ring, tapered end successively and seal piece in the tapered end cover, one end of U-shaped lock body and lock body seat flexibly connect, the other end stretches into lock tube, and the end front portion of U-shaped lock body is a screw thread, and the swivel nut in this screw thread and the lock tube is meshed; Described tapered end and seal between the piece two anti-drilling packing rings of assembling has cross key hole in the middle of this packing ring.

As improvement of the present utility model, described lock body seat top has a groove, and an end of U-shaped lock body stretches in the groove and is connected with groove by pivot pin, and the U-shaped lock body can be done 180 ° of foldings.

As improvement of the present utility model, vertically have a cylindrical cavity in the described lock body seat, an end of U-shaped lock body inserts in the cavity, and the bottom is provided with stop collar, and the U-shaped lock body can be mentioned and rotate vertically; The distance that the U-shaped lock body is mentioned equals the length of lock body other end screw thread.

Theftproof lock of the present utility model can whole extraction the U-shaped lock body make an end into and be connected with the lock body seat, do not have the situation of lock pin landing when unblanking, use more convenient.In addition, by improving the structure of spiral lock, make it be difficult for being pried open, breaking even bore with electric drill and open, anti-theft effect is better.It is simple in structure, and is reasonable in design, easily promotes the use of.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is that the utility model lock body seat A is to sectional view;

Fig. 3 is the utility model anti-drill pad coil structures schematic diagram;

Fig. 4 is second kind of embodiment structural representation of the utility model.

The specific embodiment:

Embodiment one: as shown in Figure 1, 2, 3, this theftproof lock comprises U-shaped lock body 1, lock crossbearer 2, lock body seat 4 and lock tube 3, lock body seat 4 and lock tube 3 are fixedly welded on the two ends of lock crossbearer 2 respectively, assemble swivel nut 10, packing ring 11, tapered end 6, anti-drilling packing ring 7,13 in the lock tube 3 successively, seal up buccal mass 12 at last.Have cruciform vent 14 in the middle of the anti-drilling packing ring 7,13, this hole 14 and tapered end 6 and to seal the lockhole of piece 12 corresponding, when moving with drill bit insertion brill, because drill bit appearance slyness can only contact anti-drilling packing ring, one bores moving two anti-drilling packing rings 7,13 rotates thereupon and skids, and makes drill bit can't get into tapered end 6 and plays anti-drilling antitheft effect.The top of described lock body seat 4 has a rectangular recess 15, one end of U-shaped lock body 1 stretches in the groove 15, be connected with groove 15 by pivot pin 5, U-shaped lock body 1 is rotating shaft with pivot pin 5, but opening and closing left and right, maximum opening can reach 180 °, and the other end front portion of U-shaped lock body 1 is provided with screw thread 9, the threaded engagement of the swivel nut 10 in this screw thread 9 and the lock tube 3.The turn right dead bolt 18 of tapered end 6 and 10 rotations of driven rotary nut of key are brought U-shaped lock body 1 in the lock tube 3 into and are locked, and the key that turns left produces U-shaped lock body 1 and unblanks.

Embodiment two: as shown in Figure 4, vertically have a cylindrical cavity 16 in the lock body seat 4, one end of U-shaped lock body 1 inserts in the cavity 16, one stop collar 17 is installed in the cavity 16, lock body 1 can be mentioned and rotatable vertically, the distance of mentioning just in time is equivalent to the length that U-shaped lock body 1 other end is provided with screw thread 9, other member such as enforcement mode one.

Theftproof lock of the present utility model adopts steel processing, and anti-drilling packing ring 7,13 adopts anti-drilling hard steel processing.

Claims

1, a kind of theftproof lock, comprise U-shaped lock body, lock body seat, lock crossbearer and tapered end cover, lock crossbearer two ends are fixedly connected lock body seat and tapered end cover respectively, be equipped with swivel nut, packing ring, tapered end successively and seal piece in the tapered end cover, one end of U-shaped lock body and lock body seat flexibly connect, the other end stretches into lock tube, it is characterized in that: an end of U-shaped lock body is anterior to be screw thread (9), and the interior swivel nut (10) of this screw thread (9) and lock tube (3) is meshed; Described tapered end (6) and seal between the piece (12) assembling two anti-drilling packing rings (7,13) has cruciform vent (14) in the middle of this packing ring (7,13).

2, according to the described theftproof lock of claim 1, it is characterized in that: described lock body seat (4) top has a groove (15), and an end of U-shaped lock body (1) stretches in the groove (15) and is connected with groove (15) by pivot pin (5), and U-shaped lock body (1) can be done 180 ° of foldings.

3, according to the described theftproof lock of claim 1, it is characterized in that: vertically have a cylindrical cavity (16) in the described lock body seat (4), one end of U-shaped lock body (1) inserts in the cavity (16), and the bottom is provided with stop collar (17), and U-shaped lock body (1) can be mentioned and rotate vertically; The distance that U-shaped lock body (1) is mentioned equals the length of lock body (1) other end screw thread (9).