CN2254932Y - Structure improved theft-proof lock - Google Patents

Abstract

The utility model relates to an improved theft-proof lock for building doors. The utility model comprises an outer lock head composed of a lock core sleeve and an inner lock core. A key shifting rod is fixedly connected to the inner lock core; end side of the key shifting rod is connected with a key shifting sheet; a lock ring clamping edge arranged on the lock core sleeve is provided with a gap; the lock core sleeve is provided with a movable guard pipe. When the outer lock head is pried and shifted out of a door, the key shifting sheet is pulled to drop in a lock body to be clamped for self locking, and the movable guard pipe can freely rotate. Thus the outer lock head can not be twisted and sawed. When the outer lock head is pried by using a lock ring, the lock ring clamping edge can be firstly pulled to be broken. The utility model has twisting-proof, sawing-proof and prying-proof functions, and thus even when the outer lock head is withdrawn the lock can not be unlocked.

Description

A kind of improved theftproof lock

A kind of theftproof lock that is used on the building door, particularly a kind of improved theftproof lock.

At present, existing be contained in that theftproof lock on the door is most to be adopted spoon poking rod to drive behind the lock box activity on the plate to dial the spoon circle and go up and dial a spoon sheet, stir driving rack in the lock box dead bolt of withdrawing, theftproof lock is opened.During the crime of crime molecule, often carve the plate that opens the door from the outside, carve the standing screw of disconnected outer tapered end or pull standing screw by force with chisel and just outer tapered end can be taken away with the screw thread that outer tapered end connects, the activity behind the lock box on the plate is dialled the spoon circle and is just come out, and rotates group spoon to enclose with bottle opener and just lock can be opened.Existing theftproof lock is mostly strengthened the destruction that the intensity of outer tapered end is taken precautions against external tapered end, but the structure of existing theftproof lock can't play effective preventive effect.

The purpose of this utility model is to provide a kind of improved theftproof lock, not only can reach outer tapered end is extracted also and lock can't be opened, but also have the anti-function of turning round, preventing saw, pick-proof.

The utility model is achieved in that a kind of improved theftproof lock comprises retainer, by plate behind lock core overlaps and internal cylinder is formed outer tapered end, three eye plates, spoon poking rod and the lock box, spoon poking rod is fixed on the internal cylinder, distolateral affixed the spoon sheet of dialling at spoon poking rod, be installed on the edge of the retainer that lock core puts and have gap, put at lock core movable pillar also is housed.After locking a door with this improved theftproof lock, when the crime molecule when by force outer tapered end being extracted or prizing outdoors, since spoon poking rod with dial spoon sheet connect relative thin a little less than, dialling a spoon sheet is pulled and is dropped in lock body, and block driving rack, and play self-locking action, can't open door lock with bottle opener, after this has just fundamentally solved outer tapered end and has been pulled out, the problem of opening door lock with bottle opener.Because the outer end of movable guard ring withstands on the flange of lock core cover, and is free to rotate, destructions such as external tapered end is turned round, saw are all had no way of doing it, and play the anti-effect of turning round, preventing saw.Also have the edge that whole retainer with original theftproof lock makes retainer into to have gap, when the crime molecule is wedged along the retainer limit with chisel, during by the outer tapered end of retainer edge sled, because the gap of retainer edge has reduced the intensity of retainer edge, so it is open-minded that the retainer edge is drawn earlier, retainer comes off and can't prize outer tapered end, has played the effect of pick-proof.

Fig. 1 is the utility model sectional view, and Fig. 2 is the retainer sectional view, and Fig. 3 is the retainer vertical view.Below in conjunction with accompanying drawing utility model is further described, a kind of improved theftproof lock comprises retainer (5), the outer tapered end of forming by lock core cover (4) and internal cylinder (3), three eye plates (7), plate (10) behind spoon poking rod (8) and the lock box, one end of spoon poking rod (8) is fixedly connected by screw thread and internal cylinder (3), install fastening cap (6) in the end of internal cylinder (3) additional and prevent that spoon poking rod (8) from getting loose, distolateral being fixedly connected at spoon poking rod (8) dialled spoon sheet (9), the fixed connection mode can be riveted joint, also can use screw attachment, be installed in lock core cover (4) and upward have uniform gap on week in the garden of the edge of retainer (5), going up the movable pillar of installing (2) at lock core cover (4) is slidingly matched with lock core cover (4), one side of movable pillar (2) withstands on the flange of lock core cover (4), and its other end is located with rivet (11).The outer tapered end that to adorn retainer (5), movable pillar (2) and spoon poking rod (8) is contained on the door-plate (1) by three eye plates (7), plate behind the lock box (10) is covered three eye plates (7) and be fixed on the door-plate (1), stretch out in the hole of spoon poking rod (8) plate (10) behind the lock box, to dial a spoon sheet (9) with screw or rivet and be fixed on the spoon poking rod (8), at last lock box will be fixed on behind the lock box on the plate (10) with screw rod.

Claims (5)

1, a kind of improved theftproof lock, plate (10) behind outer tapered end, three eye plates (7), spoon poking rod (8) and the lock box that comprises retainer (5), forms by lock core cover (4) and internal cylinder (3), it is characterized in that spoon poking rod (8) is fixed on the internal cylinder (3), distolateral affixed the spoon sheet (9) of dialling at spoon poking rod (8), the edge that is installed in the last retainer (5) of lock core cover (4) has gap, and movable pillar (2) also is housed on lock core cover (4).

2, theftproof lock according to claim 1 is characterized in that an end of spoon poking rod (8) connects with internal cylinder (3) by screw thread, installs fastening cap (6) additional in the end of internal cylinder (3).

3, theftproof lock according to claim 1 is characterized in that dialling spoon sheet (9) distolateral being fixedly connected of spoon poking rod (8).

4, theftproof lock according to claim 1 is characterized in that the garden of the edge of retainer (5) has uniform gap on week.

5, theftproof lock according to claim 1 is characterized in that movable pillar (2) and lock core cover (4) are slidingly matched, and a side of movable pillar (2) withstands on the flange of lock core cover (4), and its other end is located with rivet (11).

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