CN2538919Y

CN2538919Y - Locking mechanism for anti-theft door and lock

Info

Publication number: CN2538919Y
Application number: CN 02223958
Authority: CN
Inventors: 周伟志
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-27
Filing date: 2002-04-27
Publication date: 2003-03-05
Anticipated expiration: 2012-04-27

Abstract

The utility model relates to a locking device of anti-theft locks and security doors, which comprises a guiding sleeve, a guiding bar, a guiding pin and a lock shell. The guiding sleeve is arranged on the lock shell; the guiding bar sleeve is arranged in the guiding sleeve. An anti-theft hook which forms a 90 degree angle with the axis of the guiding bar is symmetrically arranged at the front end of the guiding bar. The anti-lock hook forms a whole body with the guiding bar. A spiral groove is arranged on the rod body of the guiding bar; the guiding pin is inserted into the spiral groove of the guiding bar and is fixed on the guiding sleeve. The guiding bar is fixed on the movable support inside the lock shell by washer and nut. The utility model has the advantages of a novel idea, a simple structure, a high safety and reliability and a low cost.

Description

The locking mechanism of security door, lock

Technical field

The utility model relates to the locking mechanism of lock and all kinds of security doors.

Background technology

At present, at the lock of market popularity and the lock mode of security door, the overwhelming majority all is the Wugou bolt-type, and its tamper-resistant function is poor, is easy to be pried open by violence; A small amount of buckle bolt-type lockset and security door, though improved tamper-resistant function, because of its complex structure, less reliable, manufacturability is poor during manufacturing, shortcomings such as cost height, and be difficult to form industrial scale.

Summary of the invention

The purpose of this utility model is: the rotary locking mechanism of buckle that various locks of a kind of confession and security door side direction is provided and locks up and down.

The technical solution of the utility model is achieved in that the locking mechanism of a kind of security door, lock, contain fairlead, guide rod, guide finger, lock housing, wherein fairlead is contained on the lock housing, leader casing is contained in the fairlead, have at the front end of guide rod and to become 90 ° the antitheft hook of symmetrical expression with the guide rod axis, this symmetry hook and guide rod bar portion become one; Have helicla flute on the shaft of guide rod, guide finger inserts in the helicla flute of guide rod, and is fixed on the fairlead, and guide rod is fixed on the movable support that is positioned at lock housing by pad and nut.

Advantage of the present utility model: novel, simple in structure, safe and reliable, and cost is low, technology is made, and to pass through performance good.Be fit to be configured in various anti-force open the door and lock on, improved anti-forcing open the door and the reliability of lock aspect pick-proof greatly.

Description of drawings

Structural representation when Fig. 1 is the utility model non-locking;

The view that Fig. 2 stretches out (i.e. locking) for the novel guide rod of this reality after finishing straight line and half-twist.

The specific embodiment

As shown in the figure, the locking mechanism of a kind of security door, lock, it contains fairlead 1, guide rod 2, guide finger 3, lock housing 4.Wherein, fairlead 1 is contained on the lock housing 4, and guide rod 2 is sleeved in the fairlead 1, has at the front end of guide rod 2 to become 90 ° the antitheft hook of symmetrical expression with the guide rod axis, and this symmetry hook and guide rod bar portion are one.The front portion of guide rod 2 has straight trough, has helicla flute behind straight trough, and guide finger 3 inserts in the straight trough and helicla flute of guide rod 2, and is fixed on the fairlead 1, and guide rod 2 is fixed on the movable support that is positioned at lock housing 4 by pad 6 and nut 7.When support 5 travelled forward under external force, it then was that moving linearly rotates again that guide rod 2 is at first then led control because of spiral fluted because of straight trough control moving linearly, finishes the locking that 90 ° of rotations realize antitheft hook thus.

Claims

1. the locking mechanism of a security door, lock, it is characterized in that: fairlead [1] is contained on the lock housing [4], guide rod [2] is sleeved in the fairlead [1], have at the front end of guide rod [2] and to become 90 ° the antitheft hook of symmetrical expression with the guide rod axis, this symmetry hook and guide rod bar portion are one, have helicla flute on the shaft of guide rod [2], guide finger [3] inserts in the helicla flute of guide rod [2], and be fixed on the fairlead [1], guide rod [2] is fixed on the movable support [5] that is positioned at lock housing [4] by pad [6] and nut [7].