CN2816239Y

CN2816239Y - Door lock core protection device

Info

Publication number: CN2816239Y
Application number: CN 200520015076
Authority: CN
Inventors: 应赤
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-23
Filing date: 2005-09-23
Publication date: 2006-09-13
Anticipated expiration: 2015-09-23

Abstract

The utility model provides a protection device for a lock core of a door lock, which comprises a lock head, a panel, a sliding baffle, a positioning plate of the lock core, a panel and a shifting fork, wherein the lock head is arranged outside the panel, and the positioning plate of the lock core, a pressing plate and an anti-drilling piece are connected and are arranged in the panel; a sliding groove which is penetrated on the lock head is arranged on the sliding baffle, and the shifting fork is arranged on the lock head through a clamping spring; the sliding baffle is movably connected with the shifting fork, and the sliding baffle can be driven to slide when the shifting fork rotates; the panel, the sliding baffle and the positioning plate of the lock core are provided with key holes which are positioned on the same shaft line when the sliding baffle is slid to the end. When a door needs to be opened, firstly, the lock head is rotated, the key holes on the panel, the pressing plate and the positioning plate of the lock core are positioned on the same shaft line, and then, the door is opened by a key; if the lock head is rotated to the opposite direction, because the key hole of the sliding baffle shifts, the key holes on the panel and the positioning plate of the lock core are isolated and tightly sealed, and thus, the key can not be inserted into the key holes to prevent the door lock from being destroyed.

Description

A kind of door lock core protective device

Technical field

The utility model relates to a kind of door lock core protective device.

Background technology

Existing security door or safety door, exist the phenomenon that lock core exposes or lock core keyhole exposes, perhaps only outside lock core, be provided with a removable cover plate and do simple protection, this environment provides good condition for some people does mischief, makes it very simple and just foreign matter can be filled in the lockhole and damage; In addition, this also provides opportunity for offender's crime, uses unlocking tool that lock is opened and burglary easily.

Summary of the invention

The utility model provides a kind of door lock core protective device simple in structure at the deficiency that lock core exposes or lock core keyhole exposes of existing security door or safety door, lock core is isolated from the outside in the normal state, thereby door lock is effectively protected.

For achieving the above object; the technical solution adopted in the utility model is: a kind of door lock core protective device; comprise tapered end; panel; slide damper; lock core location-plate and shift fork; it is characterized in that: described tapered end is located at panels outside; the lock core location-plate is located at the panel inboard; slide damper is provided with sliding tray and is through on the tapered end; described shift fork is located on the tapered end by jump ring; shift fork be provided with slide damper active be connected and when it rotates, can drive dialling that slide damper slides collude described panel; slide damper and lock core location-plate are provided with the keyhole that is in same axis when slide damper is slid into terminal.

As a kind of improvement of the present utility model, establish dialling of T type groove and described shift fork on the described slide damper and collude active the connection, establish hole clipping on the shift fork and be connected with the lock core location-plate by torsion spring.

As a kind of improvement of the present utility model, described lock core location-plate is provided with the pressing plate of band keyhole and two spacers, and slide damper is through between spacer, thereby it is more steady that slide damper is slided.

Further improve, also be provided with anti-drilling sheet between the keyhole of compressing tablet and lock core location-plate, anti-drilling sheet is provided with the slot that only key is passed through.

The utility model is owing to adopt technique scheme; in the time will opening the door; elder generation's rotational lock head; tapered end drives shift fork; shift fork drives the slide damper slip by dialling to collude; after slide damper slides into terminal; fixed by active at torsion spring effect lower slider baffle plate; at this moment panel; keyhole on pressing plate and the lock core location-plate is on an axis; with key door is opened, if with the tapered end counter-rotating, tapered end drives shift fork again; shift fork drives slide damper and back slides; return back is fully fixed by active at torsion spring effect lower slider baffle plate, at this moment because the keyhole of slide damper is offset, the keyhole on panel and the lock core location-plate is isolated shut; key can't be inserted, thereby protected door lock not to be destroyed.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the explosive view of the utility model door lock core protective device;

Fig. 2 is the assembling drawing of Fig. 1.

The specific embodiment

As depicted in figs. 1 and 2; be a kind of door lock core protective device of the present utility model; comprise tapered end 1; panel 2; slide damper 3; be provided with the anti-drilling sheet 4 of the slot 41 that passes through for key; pressing plate 5; lock core location-plate 6; torsion spring 7; jump ring 8 and shift fork 9; panel 1; be equipped with keyhole 01 on slide damper 3 and the lock core location-plate 6; tapered end 1 fixed panel 2 outsides; lock core location-plate 6 fixed panels 2 inboards; slide damper 3 is provided with sliding tray 31 and T type groove 32; sliding tray 31 is through on the tapered end 1; shift fork 9 is located on the tapered end 1 by jump ring 8; shift fork 9 is provided with and is connected dialling on the T type groove 32 and colludes 91; collude 91 and can drive slide damper 3 when rotating and slide dialling, to establish hole clipping 92 on the shift fork 9 and be connected with lock core location-plate 6 by torsion spring 7.Be provided with the pressing plate 5 of band keyhole 01 and two spacers 51 on lock core location-plate 6, slide damper 3 is through 61 of spacers, thereby it is more steady that slide damper is slided.And anti-drilling sheet 4 is located between the keyhole of compressing tablet and lock core location-plate, makes the door lock core protective device more firm.

When opening the door; elder generation's rotational lock head 1; tapered end drives shift fork 9; shift fork 9 colludes 3 slips of 91 drive slide dampers by dialling; after slide damper slides into terminal; fixed by active at torsion spring 7 effect lower slider baffle plates 3, at this moment panel; keyhole 01 on pressing plate and the lock core location-plate is being opened door with key on an axis; if tapered end is reversed; tapered end 1 drives shift fork 9, dial to collude 91 and drive slide dampers and back slide, return fully the back at torsion spring 7 effect lower slider baffle plates 3 by active fixing; at this moment because the skew of the keyhole of slide damper; the isolation of keyhole on panel and the lock core location-plate is shut, key can't be inserted, thereby protected door lock not to be destroyed.

Claims

1; a kind of door lock core protective device; comprise tapered end (1); panel (2); slide damper (3); lock core location-plate (6) and shift fork (9); it is characterized in that: described tapered end (1) is located at panel (2) outside; lock core location-plate (6) is located at panel (2) inboard; slide damper (3) is provided with sliding tray (31) and is through on the tapered end (1); described shift fork (9) is located on the tapered end (1) by jump ring (8); shift fork (9) be provided with slide damper (3) active be connected and when it rotates, can drive dialling that slide damper slides collude (91), described panel (1); slide damper (3) and lock core location-plate (6) are provided with the keyhole (01) that is in same axis when slide damper is slid into terminal.

2, according to the described a kind of door lock core protective device of claim 1; it is characterized in that: establish dialling of T type groove (32) and described shift fork on the described slide damper (3) and collude that (91) are active to be connected, establish hole clipping (92) on the shift fork (9) and be connected with lock core location-plate (6) by torsion spring (7).

3, according to the described a kind of door lock core protective device of claim 1, it is characterized in that: described lock core location-plate (6) is provided with the pressing plate (5) of band keyhole (01) and two spacers (51), and slide damper (3) is through between spacer (51).

4, according to the described a kind of door lock core protective device of claim 1, it is characterized in that: also be provided with anti-drilling sheet (4) between the keyhole (01) of compressing tablet (5) and lock core location-plate (6), anti-drilling sheet (4) is provided with the slot (41) that key is passed through.