CN102747906A

CN102747906A - D-shaped antitheft lock

Info

Publication number: CN102747906A
Application number: CN2012102427182A
Authority: CN
Inventors: 李一达; 张秋生; 张丹枫
Original assignee: Xinxiang Vocational and Technical College
Current assignee: Xinxiang Vocational and Technical College
Priority date: 2012-07-13
Filing date: 2012-07-13
Publication date: 2012-10-24
Anticipated expiration: 2032-07-13
Also published as: CN102747906B

Abstract

The invention discloses a D-shaped antitheft lock. The technical scheme disclosed by the invention has the key points that the D-shaped antitheft lock comprises a tubular straight shank and a U-shaped lock ring; a pinhole is arranged at one end of the U-shaped lock ring and is riveted with a U-shaped part at one end of the tubular straight shank by a hinge pin to form an outer hinge; the tubular straight shank is hollow; both ends of the inner wall of a cavity of the tubular straight shank are respectively provided with one round tube; a lock cylinder of an elastic lock is clamped between the two round tubes; the front end of the lock cylinder is provided with an eccentric shaft; a bolt in the lock cylinder is clamped with a lock bar to complete a locking state; a round steel sheet is added on the end face of a keyhole of the lock cylinder; a steel ball can be added on the joint face of the round steel sheet and the lock cylinder to form a pressure bearing; and the lock cylinder is arranged at the middle part of the tubular straight shank. According to the invention, the condition that the end face of an opening is knocked by force to ensure the bolt to fall down so that the antitheft lock is unlocked can be effectively prevented; and moreover, the lock cylinder of the D-shaped antitheft lock is arranged at the middle part of the tubular straight shank, so that the D-shaped antitheft lock takes good effects of preventing the D-shaped antitheft lock from being technically unlocked and preventing the lock cylinder from being broken by an electric drill.

Description

A kind of D type theftproof lock

Technical field

The present invention relates to the lock field, the D type theftproof lock that particularly a kind of theftproof performance is excellent.

Background technology

Popular in the market D type lock one end is a hinge, and other end opening, the groove on the lock ring of opening one end is blocked the process of locking of promptly accomplishing by dead bolt.Yet use such lockset, knock the opening part end face by force and be easy to make dead bolt to fall piece and cause theftproof lock to be opened.And keyhole is located at opening part one end, adopts technological means to open and also is easy to, and adopts electric drill that lock core is broken also and can lock be opened in addition.The insurance theftproof performance of the D type theftproof lock that therefore uses at present is relatively poor.

Summary of the invention

The purpose of this invention is to provide the excellent D type theftproof lock of a kind of theftproof performance, it both had been not easy by the violence orcible entry, was difficult to again adopt the technology unlocking means to open it.

Technical scheme of the present invention is accomplished as follows, and a kind of D type theftproof lock comprises tubulose staight shank and U-shape lock ring, it is characterized in that: an end of described U-shape lock ring has U type parts riveted joint the form outer hinge of a pin-and-hole through bearing pin and tubulose staight shank one end; Described tubulose staight shank is a hollow; A pipe respectively is equipped with at its cavity inner wall two ends, and card has the lock core of a cylinder lock between two pipes, and the lock core front end has an eccentric shaft; The dead bolt that cooperates with off-centre blocks locking bar and promptly accomplishes locking state, and lock core is located at the middle part of tubulose staight shank; Side at lock core keyhole is equipped with the key extension bar, and an end of this key extension bar is provided with the key draw-in groove, and sidewall has two grooves, and they become 90 degree to intersect; The outer end of described locking bar is a circular flat; During the circular flat locking and tubulose staight shank one hold level with both hands together, the plane is connected with the round bar that the cross section becomes step, middle thicker part position is provided with sliding recess; The locking bar that makes lockset be in the enable possition can not be transferred to and break away from lock body; There is a groove at thinner position, and the openings of sizes and the dead bolt of groove match, and the distal end faces at thin position is the inclined-plane; The afterbody of described U-shape lock ring opening one end is provided with penetrating hole, and the diameter of thicker part position is consistent in the middle of the openings of sizes in this penetrating hole and the locking bar.D type theftproof lock of the present invention is characterized in that: the keyhole end face of said lock core is added with a circular steel disc, and this circle steel disc and lock core mating face can add steel ball and form pressure bearing.

The present invention can prevent to knock by force the opening part end face effectively and make dead bolt fall piece and cause theftproof lock to be opened; Because locking bar interts in the penetrating hole of U-shape lock ring one end; Blocked by dead bolt at the other end, violence orcible entry makes dead bolt fall piece to cause theftproof lock to be opened unlikely like this; Lock core of the present invention in addition places the middle part of tubulose staight shank, breaks lock core and has played good effect preventing technology unlocking and electric drill, has increased the theftproof performance of such lockset greatly.

Description of drawings

Fig. 1 is the structural representation under the locking state of the present invention.

Fig. 2 is the structural representation after the combination of pipe and lock core among the present invention.

Fig. 3 is the structural representation of locking bar among the present invention.

Fig. 4 is the structural representation of pipe among the present invention.

Fig. 5 is the structural representation of the interior bar of key extension bar among the present invention.

The specific embodiment

Describe embodiment in detail in conjunction with accompanying drawing.A kind of D type theftproof lock comprises tubulose staight shank 1 and U-shape lock ring 2, and an end of U-shape lock ring 2 has a pin-and-hole to form outer hinge through U type parts 3 riveted joints of bearing pin and tubulose staight shank 1 one ends; Tubulose staight shank 1 is a hollow; Its cavity inner wall two ends are equipped with pipe 11 and pipe 12 respectively, and card has the lock core 4 of a cylinder lock between pipe 11 and the pipe 12, and lock core 4 front ends have an eccentric shaft; Block locking bar 6 with the supporting dead bolt 5 of eccentric shaft and promptly accomplish locking state; Lock core 4 keyhole end faces can add a circular steel disc 8 in addition, and this circle steel disc 8 can add steel ball 9 with lock core 4 mating faces and form pressure bearing, and lock core 4 is located at the middle part of tubulose staight shank 1; Side at lock core 4 keyholes is equipped with key extension bar 10, and an end of this key extension bar 10 is provided with the key draw-in groove, and sidewall has two grooves, and they become 90 degree to intersect; The outer end of described locking bar 6 is circular flats; During the circular flat locking and tubulose staight shank 1 one hold level with both hands together, the plane is connected with the round bar that the cross section becomes step, middle thicker part position is provided with sliding recess; The locking bar 6 that makes lockset be in the enable possition can not be transferred to and break away from lock body; There is a groove at thinner position, and the openings of sizes of groove and dead bolt 5 match, and the distal end faces at thin position is the inclined-plane; The afterbody of described U-shape lock ring 2 openings one end is provided with penetrating hole, and the diameter of thicker part position is consistent in the middle of its openings of sizes and the locking bar 6.When D type theftproof lock was in locking state, eccentric shaft can be pushed the dead bolt 5 that is pressed in locking states by spring aside when insertion key 7 backs rotated, and locking bar 6 is ejected by an end spring, and D type theftproof lock can be opened.

For preventing technology unlocking; Lock core 4 is located at the middle part of tubulose staight shank 1; Key 7 must be furnished with key extension bar 10 and could insert in the lock core 4; Such design has increased very big difficulty to technology unlocking, and an end of key extension bar 10 is provided with the key draw-in groove, and it can be clamped on key 7 front end of extension bar.Key 7 also can convenient taking-up behind locking simultaneously.For assurance key 7 can accurately insert in lock core 4 keyholes, and can do 90 degree Unscrew dead bolts 5.Two grooves are arranged on the key extension bar 10, and their types that meets at right angles intersect.

For preventing violence orcible entry, the groove of conventional U-shape lock ring one end cooperated with dead bolt make locking bar 6 into and intert in the penetrating hole of U-shape lock ring 2 one ends, violence tears down unlikely like this.Can accomplish locking state as long as press locking bar 6 outer surface levels during locking with finger.

For preventing lock core 4 to be broken lock is opened with electric drill; Lock core 4 end faces add a circular steel disc 8 in addition, and steel disc and lock core 5 mating faces can add steel ball 9 and form pressure bearings, like this when wanting to break lock core 4 with electric drill; Circular steel disc 8 promptly can dally, thereby can't lock core 4 be broken.

Claims

1. a D type theftproof lock comprises tubulose staight shank and U-shape lock ring, it is characterized in that: an end of described U-shape lock ring has U type parts riveted joint the form outer hinge of a pin-and-hole through bearing pin and tubulose staight shank one end; Described tubulose staight shank is a hollow; A pipe respectively is equipped with at its cavity inner wall two ends, and card has the lock core of a cylinder lock between two pipes, and the lock core front end has an eccentric shaft; Block locking bar with the supporting dead bolt of eccentric shaft and promptly accomplish locking state, lock core is located at the middle part of tubulose staight shank; Side at lock core keyhole is equipped with the key extension bar, and an end of this key extension bar is provided with the key draw-in groove, and sidewall has two grooves, and they become 90 degree to intersect; The outer end of described locking bar is a circular flat; During the circular flat locking and tubulose staight shank one hold level with both hands together, the plane is connected with the round bar that the cross section becomes step, middle thicker part position is provided with sliding recess; The locking bar that makes lockset be in the enable possition can not be transferred to and break away from lock body; There is a groove at thinner position, and the openings of sizes and the dead bolt of groove match, and the distal end faces at thin position is the inclined-plane; The afterbody of described U-shape lock ring opening one end is provided with penetrating hole, and the diameter of thicker part position is consistent in the middle of the openings of sizes in this penetrating hole and the locking bar.

2. D type theftproof lock according to claim 1 is characterized in that: the keyhole end face of said lock core is added with a circular steel disc, and this circle steel disc and lock core mating face can add steel ball and form pressure bearing.