CN2446220Y

CN2446220Y - Tapered end of anti-theft lock

Info

Publication number: CN2446220Y
Application number: CN 00249650
Authority: CN
Inventors: 吴其良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-13
Filing date: 2000-10-13
Publication date: 2001-09-05
Anticipated expiration: 2010-10-13

Abstract

The utility model belongs to the technical field of a lock head in a theftproof lock. The utility model is designed for flexible and convenient opening, a lock core is provided with a vane groove with multiple stages along a shaft, a vane and a spring are arranged in the vane groove, one side of the vane is provided with a gap, and correspondingly, one side of the lock core and one side of a lock pipe are provided with locking block grooves which are inside provided with a locking block, and small springs are arranged among both ends of the locking block and the lock pipe. The utility model is characterized in that the longitudinal direction middle position of both ends of the vane is provided with a spring positioning fixation gap and a key insertion opening groove hole, the utility model has the advantages of good theftproof performance, flexible opening, and convenience, and the utility model can be suitable for popularization and application of theftproof locks.

Description

The tapered end of theftproof lock

The utility model relates to a kind of theftproof lock technical field, especially relates to the tapered end technical field of theftproof lock.

The theftproof lock kind is a lot of on the market, but often defective is more.It as application number 98231436.1 Chinese patent theftproof lock, it includes lock pipe, lock core, blade, spring and clamping block and forms, at the blade groove that has vertically on the lock core more than 2, one side of blade has boss to block spring, and be loaded in the blade groove, the side of blade has breach, on the position of breach correspondence clamping block is arranged, and return spring is equipped with at the clamping block two ends, has the clamping block groove with the clamping block correspondence position on the contact surface of lock pipe and lock core.This structure can strengthen the technical opening difficulty, strengthen theftproof, but its blade one side boss blocks spring, be installed in the blade groove, when with key operated lock, spring easily makes the blade inclination that rotates, thereby makes the key discontinuity, increase resistance, use dumb, convenience, blade is a Kaifeng enclosed key groove hole, and it is just little that so same height blade is opened the keyhole width, the lock size of key is also just little, is stolen by the people easily and opens.

The purpose of this utility model is to provide a kind of theftproof performance strong and open the tapered end of flexible theftproof lock.

The technical solution of the utility model is to realize like this.The tapered end of this theftproof lock, include lock pipe, lock core, blade, spring, clamping block, on lock core, have multistage blade groove vertically, blade and the flexible spring of control blade, place blade groove, one side of blade has breach, lock core one side has the clamping block groove with the position, lock pipe the same side that is comprising lock core accordingly, built-in clamping block, be provided with little spring between clamping block two ends and the lock pipe, it is characterized in that vertical centre position, described blade two ends has spring positioning and fixing breach and key inserts the opening slotted eye.

Adopt the tapered end of the theftproof lock of said structure, owing to place the spring of blade groove in the bottom land middle part, and the blade breach is opened at blade laterally middle again, spring positioning and fixing breach has projection to make that spring and blade are stable to be close to, when key stretched into the key groove hole of blade, blade was flexible stressed even, and the resistance of therefore unblanking is little, contact engaging and separating force reduces naturally, use flexibly, conveniently, adopt stainless steel blade again, mechanical strength is big, not yielding, wearing and tearing, and middle key groove hole width is big, and lock secret key amount is big, lock just is difficult for being opened by people's pilferage, and safety is higher.

Description of drawings:

The lock head structure exploded view of Fig. 1 theftproof lock;

Fig. 2 blade construction enlarged drawing;

Fig. 3 clamping block front view.

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail:

As shown in the figure, the tapered end of this theftproof lock includes lock pipe 5, lock core 3, blade 7, spring 4, clamping block 6, at the flat blade groove 13 that has vertically on the lock core more than two, blade and the flexible spring of control blade place blade groove, blade adopts stainless steel substrates to be stamped to form, its in centre position, both ends up and down respectively punching press have spring positioning and fixing breach 8 and key to insert opening slotted eye 9, spring positioning and fixing breach has a projection 12 that can stretch in the spring eye in the middle of the bottom, blade one side has V-shape breach 10 and the invalid breach 11 of a plurality of V-shape, lock core one side has clamping block groove 14 with the position, lock pipe the same side that is comprising lock core accordingly, built-in clamping block 6 in this groove, clamping block one side also is a V-shape, is provided with little spring 15 between clamping block two ends and the lock pipe.One of little spring presses closer in the clamping block end, and other end envelope is embedded in lock pipe inboard, and lock core studs with theft protection plate 2 at keyhole one side external surface, and overcoat tapered end cover 1 then.

Little spring is contained between clamping block end and the lock pipe in the utility model, when key inserts in the lock core, many blade side breach degree of depth that is consistent, clamping block return automatically under the little spring effect and the release lock pipe on the clamping block groove, lock core and lock pipe can be relatively rotated, therefore clamping block is not easy to wear, opens more flexible.

Claims

1. the tapered end of a theftproof lock, include lock pipe (5), lock core (3), blade (7), spring (4), clamping block (6), on lock core, have multistage blade groove (13) vertically, blade and the flexible spring of control blade place blade groove, one side of blade has breach (10), lock core one side has clamping block groove (14) with the position, lock pipe the same side that is comprising lock core accordingly, built-in clamping block (6), be provided with little spring (15) between clamping block two ends and the lock pipe (5), it is characterized in that vertical centre position, described blade two ends has spring positioning and fixing breach (8) and key inserts opening slotted eye (9).

2. the tapered end of theftproof lock as claimed in claim 1 is characterized in that a side breach of described blade (7) is V-shape, and clamping block one side also is the coupling V-shape accordingly.

3. the tapered end of theftproof lock as claimed in claim 2 is characterized in that described breach (10) one sides have a plurality of invalid breach of V-shape (11) that are.

4. the tapered end of theftproof lock as claimed in claim 1 is characterized in that described spring positioning and fixing breach (8) has a projection (12) that can stretch in the spring eye in the middle of the bottom.

5. the tapered end of theftproof lock as claimed in claim 1 is characterized in that (15) one of described little springs press closer in the clamping block end, and it is inboard that other end envelope is embedded in the lock pipe.

6. the tapered end of theftproof lock as claimed in claim 1 is characterized in that described lock core (3) studs with theft protection plate (2) at the external surface of keyhole one side.