CN2157963Y

CN2157963Y - Anti-theft door lock

Info

Publication number: CN2157963Y
Application number: CN 93214899
Authority: CN
Inventors: 张立友
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-12
Filing date: 1993-06-12
Publication date: 1994-03-02
Anticipated expiration: 2003-06-12

Abstract

The utility model relates to an anti-theft lock for a large door. A lock body forms a cuboid shape, and a U-shaped lock tongue is arranged in the lock body. A lock pin is arranged in a direction vertical to a lock tongue. An inclined breach is arranged at one end of the lock tongue. The lock pin is provided with an inclined breach matched with the lock pin. A lock stick which is perpendicular to the lock pin is installed in the middle of the lock tongue, and a lock stick clamping trough is arranged on the lock stick. A tooth-shaped trough which is matched with a lock core is arranged at the other end of the lock tongue. Two lock tongue chucks which are engaged with the lock core rotate the lock core by a key, and the lock tongue chucks are controlled and clamped in the tooth-shaped trough of lock tongue. Every part can glide in respective hole, and return springs are all arranged in the holes. The lock tongue is used for impelling the lock pin to clamp the lock stick. The utility model has the advantages of larger locking force and convenient use, and is especially suitable for being installed on a large door.

Description

Anti-theft door lock

The utility model relates to a kind of safety lock, particularly a kind of safe-guard door lock of locking rod that has.

Existing safe-guard door lock is nothing more than two big classes, and a class is dark dead bolt, and another kind of is bright dead bolt, i.e. the padlock of saying usually.Their application scenario is not quite similar.Mostly be the padlock form at the gate of vast rural area and machine-operated factories and miness with lock, because outside dead bolt was exposed to, destroyed easily, theftproof performance was not high.

The purpose of this utility model is to provide a kind of safe-guard door lock that is suitable for installing on the gate, has overcome the deficiency of prior art.

For realizing the purpose of the utility model, the lock body of safe-guard door lock is designed to cuboid, laterally have two parallel holes in the lock body, interpolation one " U " shape dead bolt, latch design becomes the garden cylindricality, the middle part has oblique breach, two lock pins are installed in the hole perpendicular to " U " shape dead bolt, the dead bolt top has oblique lock pin chute, and the other end of dead bolt has two profile of tooth dead bolt draw-in grooves, has two to stir the dead bolt dop of interlock with lock core corresponding to dead bolt draw-in groove position, lock core is provided with keyhole, on lock body, be positioned at and have the hole that is parallel to dead bolt in the middle of " U " shape dead bolt, in be provided with the lock rod, the inner of lock rod has lock rod draw-in groove corresponding to the lock pin position, convenient for return, each parts can slide in the hole, and return spring all is housed in the hole.

The theftproof lock that the utility model provides is specially adapted to the gate and installs, because lock pin and lock rod are thicker, so lock power is bigger, after the locking, does not reveal dead bolt, and reliability is stronger.

Below in conjunction with accompanying drawing the utility model is further described.

What accompanying drawing 1 provided is structural representation of the present utility model (cut open and show).

Fig. 2 is a safe-guard door lock open mode schematic diagram.

Fig. 3 is the schematic diagram of lock pin.

Fig. 4 is the lateral view of Fig. 3.

With reference to the utility model shown in the accompanying drawing 1, theftproof lock is in locking states.Lock body 1 is the cuboid cast iron materials, dead bolt 2 is " U " font, have two parallel dead bolt holes in the middle of the lock body, dead bolt 2 is inserted in two holes and does and is slidingly matched, top, two holes is provided with dead bolt return spring 11, two tops of dead bolt 2 have oblique breach, be called lock pin chute 3, the other end of dead bolt has two profile of tooth dead bolt draw-in groove 5(A, B and C, D), there are two to stir the dead bolt dop 6 of interlock corresponding to dead bolt draw-in groove 5 positions with lock core 7, the common lock core of lock core 7 usefulness replaces, there is keyhole the centre, stir lock core and can drive dead bolt dop 6, snap in draw-in groove A respectively, B, C, in the D, lock pin 4 is at the lock body middle part perpendicular to dead bolt 2, lock pin 4 perforate on lock body is packed into, be cylindricality, have the oblique breach that the oblique lock pin chute opened with dead bolt 2 tops matches at its middle part, dead bolt 2 locking-in states, lock pin and dead bolt chucking are when dead bolt 2 is opened, along with pulling out of dead bolt, lock pin then skids off the dead bolt top along the inclined-plane on the dead bolt, be provided with a lock rod 13 in the middle of the dead bolt of the middle part of lock body, parallel with dead bolt, it in the hole slidably, inner end has draw-in groove 12, when dead bolt inserted closure, lock pin snapped in the draw-in groove 12 just, and the external part of lock rod inserts in the fixed hole seat that presets at the gate, if no key is stirred lock core and is rotated, then locking rod can't transfer to, and is convenient to return in order to make the lock rod, and lock rod jackscrew 9 is arranged in the inner of lock rod, it is by the screw in the fixing threaded hole 8, screw and jackscrew engaging.

For the ease of installing, the leading flank of lock body has fixing hole 14 and 8, is equipped with return spring in each member apertures.

The work of this theftproof lock is such: when dead bolt inserts, the lock pin breach is replenished asphyxia by external pressure on the chest and abdomen by dead bolt, lock pin snaps in the lock rod draw-in groove, two dead bolt dops snap in respectively in B, the D dead bolt serrate slot, spur dead bolt in any case, all can't spur, the lock rod also can't move, be inserted in firmly in the seat hole at another fan gate, play the purpose at locking gate.

Use key rotation lock core, the dead bolt dop breaks away from B, D teeth groove, latch bolt spring moves right dead bolt, dead bolt breach inclined-plane and lock pin inclined-plane joined and by the lock pin return spring lock pin were pulled out lock rod draw-in groove simultaneously this moment, and the lock rod then can arbitrarily spur, and Men Ze is opened, the dead bolt dop falls in dead bolt A, the C serrate slot, the lock rod is upspring by jackscrew and is driven the lock core rotation simultaneously, makes its return, can transfer to key smoothly.

This theftproof lock is if be installed on the iron gate, directly the lock body chassis is welded on the iron gate to get final product; If be installed on the timber, can directly get final product without the lock body chassis with the screw hole screw is fixing, this theftproof lock is particularly suitable for the rural area and promotes.

Claims

1, a kind of safe-guard door lock, comprise lock body 1 in the structure, dead bolt 2, lock pin 4 and lock core 7, it is characterized in that lock body 1 is cuboid, have two parallel holes in lock body is horizontal, in be inserted with one " U " shape dead bolt 2, lock pin 4 is located in the hole perpendicular to " U " shape dead bolt 2, be cylindricality, dead bolt 2 tops have oblique lock pin chute 3, the other end has two profile of tooth dead bolt draw-in grooves 5, has two to stir the dead bolt dop 6 of interlock with lock core 7 corresponding to dead bolt draw-in groove 5 positions, and keyhole is arranged on the lock core, have the hole that is parallel to dead bolt on the lock body in the middle of " U " shape dead bolt, in be provided with lock rod 13, the inner of lock rod 13 has lock rod draw-in groove 12, the oblique breach that the oblique lock pin chute that cylindricality lock pin 4 middle parts have with open on dead bolt 2 tops matches corresponding to lock pin 4 positions, slidably, Kong Dingjun has spring to each part in the hole.

2, by the described safe-guard door lock of claim 1, it is characterized in that, perpendicular to the plane of dead bolt, have fixing hole 8 in the U-shaped dead bolt, it with the inner top of lock rod between the rod of lock jackscrew 9 is arranged.