CN2237088Y

CN2237088Y - Anti-theft safety door interlocking lock

Info

Publication number: CN2237088Y
Application number: CN 95240214
Authority: CN
Inventors: 蒋长康; 潘东山
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-31
Filing date: 1995-07-31
Publication date: 1996-10-09
Anticipated expiration: 2005-07-31

Abstract

A kind of theft-proof emergency exit linkage lock, is equipped with the lock body of the column lock bolt and spring lock tongue and a series of link mechanisms that is driven by hand grip and rocker arm to make up; the connecting rod system terminal is connected with the door bolt, the door bolt extends to the upper, lower, left and right of the door leaf and is matched with the bolt slot at the relative position on the door frame; the handle is coaxially sleeved with the central rocker arm by a connecting pin, and the tail end of the connecting pin is connected with the front end of the columnar lock plunger; the cantilever end under the central rocker arm and the spring bolt form a hasp-shaped matching mechanism. The structure scheme enhances the prevention function of the anti-theft door and the lock thereof.

Description

The anti-theft safety door blocking lock

The utility model belongs to a kind of anti-theft security door lock.

Anti-theft security door lock of the prior art, its lockmaking point is fewer, as current commercially available common security door, only depend in the croze of side-by-side insertion doorframe one side of one, two locking bolt on the lock body and realize lockmaking, some improved plans also appearred recently, as increase lockmaking point or lockmaking direction, promptly upper and lower or increase several lockmaking points again on the upper and lower both sides of door at original limit lock body.Though improved the security performance of security door like this, but still it is undesirable, its weak point is the not fine yet solution of pick-proof problem, especially there is not the lockmaking point on one side that hinges of door, the hinge of security door then be exposed to usually the outside, very easily destroyed, cause stolen accident potential thereby therefore still exist door to be pried open from one side that hinge is installed.

The purpose of this utility model is to propose a kind of new interlock, makes its four limits, upper and lower, left and right at security door all have tamper-resistant function, thereby overcomes the defective of known technology.

Content of the present utility model is that announcement is a kind of by the same group of blocking lock technical scheme that is formed by the linkage combination of handle and rocking arm drive of security door lock body that column locking bolt and spring latch are housed, and its architectural feature is:

I, at the front end of described column locking bolt, have the pin-and-hole of up/down perforation along the direction vertical with axial line, the arc lingual surface of described spring latch is towards the below;

The linkage that II, described handle and rocking arm drive is comprising having: a handle, a center rocker arm and the some branches rocking arm and the connecting rod that link with it, and the keeper that is attached at the push and pull system terminal; This keeper stretches to the upper and lower, left and right four direction of door leaf respectively, and with doorframe on the croze of opposite position be complementary;

The rotating shaft of III, described handle and center rocker arm socket-connects, and by means of a connecting pin that both are together fixedly connected, can realize coaxial rotation; At the tail end of described connecting pin, also be provided with a protruding pin along the direction vertical with axial line, this protruding pin is complementary with the pin-and-hole of described column locking bolt front end;

The lower end cantilever end of IV, described center rocker arm is formed hasp shape matching mechanism with described spring latch.

Accompanying drawing is drawn the structure of the utility model specific embodiment and is showed:

Fig. 1 is the blocking lock overall structure schematic diagram (front view) of present embodiment;

Fig. 2 is that the blocking lock unlocking condition security door lock body of present embodiment interconnects matching relationship schematic diagram (front view) with handle and center rocker arm,

Fig. 3 is that the blocking lock blocking security door lock body of present embodiment interconnects matching relationship schematic diagram (front view) with handle and center rocker arm.

As shown in the figure, when the blocking lock locking, door leaf 1 is fixed on the doorframe 2 from the four sides by eight points of contact by chain 4,5 and keeper 6-11.Keeper 6-11 links to each other with the branch concentricity rocking arm 12 of rocking arm by each autocorrelative pull bar.Center rocker arm 12 can be connected itself and handle 15 in the same rotating shaft 14 by a connecting pin 13 again, can realize coaxial rotation.The tail end of connecting pin 13 also has a protruding pin 18, and this protruding pin 18 is at door leaf during by locking, and its inserts among the pin-and-hole D of column locking bolt 21 front ends of security door lock body 19.

Now, this anti-theft safety door blocking lock is opened and closed the lock process be described below respectively, its dynamic fit relation therefrom is described: 1. unblank

When the keyhole 20 that key is injected security door lock body 19 is unblanked spinning movement, locking bolt 21 stretches out lock body 19 to be made connecting pin 13 be pushed out breach B and inserts breach A, at this moment be that available handle 15 drive center rocker arms 12 clockwise rotate along rotating shaft 14, connecting pin 13 and pin 21 are broken away from, drive six keeper 6-11 by connecting rod and branch rocking arm simultaneously and withdraw from from six crozes of four direction of doorframe, the below cantilever end C of rocking arm 12 then overcomes on the pulling force of spring 17 sled simultaneously and snaps on the spring latch 16.So just formed unlocking condition as shown in Figure 2, anti-theft safety door can be opened.2. locking

When with key with door when unlocking condition changes the rotary manipulation of blocking over to, after this dead bolt 16 setback lock bodies 19; the cantilever end C of rocking arm 12 inhour under spring 17 tension is rotated; make center rocker arm 12 drivening rod mechanisms that six keeper 6-11 are inserted croze in the doorframes; connecting pin 13 is counter clockwise rotation synchronously also; its protruding pin 18 is tipped in heavily again among the pin-and-hole D of column locking bolt 21 front ends continue the turn key again and make locking bolt 21 affect connecting pin 13 to withdraw from breach A to enter breach B.At this moment, handle 15 and center rocker arm 12 or else can coaxial rotation, and anti-theft safety door can not be opened with handle; Thereby form blocking as shown in Figure 3.Because this state lower handle 15 can only dally, thereby lockset is also played a protective role.

In addition, in order to keep breach A to be horizontal all the time or to aim at when the locking with breach B, with convenient unlock operation, can in the rotating shaft 14 of handle 15, counter weight device 22 be housed, also can between handle 15 and door leaf 1 surface, be equipped with the sliding contact mechanism that band bumps pearl.

Advantage of the present utility model and good effect just be it can effectively avoid because of Hinge is damaged and make antitheft door be prized stolen and the destroyed serious accident of lockset, Thereby improve its safety precaution function.

Claims

1, a kind of anti-theft safety door blocking lock is formed by the same group of linkage combination that is driven by handle and rocking arm of security door lock body that column locking bolt and spring latch are housed, and it is characterized in that:

I, at the front end of described column locking bolt, have the pin-and-hole of up/down perforation along the direction vertical with axial line; The arc lingual surface of described spring latch is towards the below;

The linkage that II, described handle and rocking arm drive is comprising a handle, a center rocker arm and the some branches rocking arm that links with it and connecting rod and the keeper that is attached at the push and pull system terminal; This keeper stretches to the upper and lower, left and right four direction of door leaf respectively, and with doorframe on the croze of relative position be complementary;

The rotating shaft of III, described handle and center rocker arm socket-connects, and by a connecting pin that both are together fixedly connected, at the tail end of described connecting pin, along the direction vertical with axial line, also be provided with a protruding pin, this protruding pin is complementary with the pin-and-hole of described column locking bolt front end;

The below cantilever end of IV, described center rocker arm is formed hasp shape matching mechanism with described spring latch.

2, anti-theft safety door blocking lock according to claim 1 is characterized in that: can be provided with counter weight device in the rotating shaft of described handle.

3, anti-theft safety door blocking lock according to claim 1 is characterized in that: can also be provided with the sliding contact mechanism that band bumps pearl between described handle and door leaf surface.