CN203129747U

CN203129747U - Matching structure for improving safety and protective performance of lock

Info

Publication number: CN203129747U
Application number: CN 201320051890
Authority: CN
Inventors: 吴峰
Original assignee: XIAMEN MAKE LOCKS CO Ltd
Current assignee: Xiamen Make Security Technology Co Ltd
Priority date: 2013-01-30
Filing date: 2013-01-30
Publication date: 2013-08-14
Anticipated expiration: 2023-01-30

Abstract

The utility model discloses a matching structure for improving the safety and protective performance of a lock. According to the matching structure for improving the safety and protective performance of the lock, protruding check blocks are arranged on the inner wall of a key hole, allowing a key to be inserted, of a lock body, and grooves matched with the protruding check blocks are formed in the key. Due to the fact that the protruding check blocks are additionally arranged in the key hole, unlocking is unavailable by inserting of a simple tool or an iron wire into the key hole due to the fact that force can not be applied under the blocking of the protruding check blocks. Therefore, the matching structure for improving the safety and protective performance of the lock can well prevent a thief from unlocking a door to steal.

Description

A kind of fit structure that improves the lock safety

Technical field

The utility model relates to the technical field of lockset, and special and a kind of to improve the fit structure of locking safety relevant.

Background technology

In the prior art, general lockset is made up of lock body and key, and lock body comprises lock housing, inner core, locking plate (or bullet pin), spring and dead bolt again, and inner core is nested with in lock housing, and locking plate (or bullet pin) and groups of springs are contained in the inner core, and dead bolt is assembled on the inner core.When use was unblanked, the lockhole that key passes lock housing (or inner core) inserted in the inner core, promoted locking plate compression spring to the rotary stopper of removing inner core and lock housing, rotated key again and namely drove the relative lock housing rotation of inner core, rotated thereby drive dead bolt, realized unblanking; After key is extracted, locking plate effect under reset, the relative rotation that locking plate limits inner core and lock housing again realizes locking.

In the said structure, because the keyhole of planting for key (as the lockhole of lock housing and the jack of locking plate) all is circular hole or the square hole of rule, so the thieves or robbers who act under cover of night very easily adopt simple tool or iron wire etc. to insert keyhole, the application of force is attempted a little, gets final product easy for unlocking.This shows that existing lockset safety is low, await really improving.

The utility model content

The purpose of this utility model is to provide a kind of fit structure that improves the lock safety, can prevent better that the thieves or robbers who act under cover of night from unblanking to commit theft.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of fit structure that improves the lock safety, the keyhole inwall of planting for key at lock body forms the convex block, is forming the groove that cooperates with the convex block on the key.

Described lock body forms the convex block at the lockhole inwall of lock housing.

Described lock body forms the convex block at the lockhole inwall of inner core.

Described lock body forms the convex block at the jack inwall of locking plate.

Described convex block has two, two convex blocks be parallel to each other and two convex blocks between have a gap.

The inner of described two convex blocks all surpasses the center line of keyhole, and namely two convex blocks is inner interlaced, has a gap between the alternating share.

After adopting said structure, the utility model is because increased the convex block, when adopting simple tool or iron wire etc. to insert keyhole in keyhole, stopped by the convex block, can't the application of force attempt unblanking, so the utility model can prevent better that the thieves or robbers who act under cover of night from unblanking to commit theft.

Description of drawings

Fig. 1 is perspective view of the present utility model.

Label declaration

Lock body 1 lock housing 11 inner cores 12 locking plates 13 convex blocks 10

Key 2 grooves 20.

The specific embodiment

As shown in Figure 1, the utility model discloses a kind of fit structure that improves the lock safety, the keyhole inwall of planting for key 2 at lock body 1 forms convex block 10, it specifically can be the lockhole inwall formation convex block 10 in lock housing 11, or form convex block 10 at the lockhole inwall of inner core 12, or forming convex block 10 etc. at the jack inwall of locking plate 13, this embodiment is that the jack inwall at first locking plate 13 forms convex block 10.In order to promote safety, convex block 10 can have two, two convex blocks 10 are parallel to each other, the inner of two convex blocks 10 can all surpass the center line (seeing dotted line) of keyhole, make the inner interlaced of two convex blocks 10, have a clearance D between two convex block 10 alternating shares.

Correspondingly, the utility model forms the groove 20 that cooperates with convex block 10 at key 2.

Like this, the utility model when inserting keyhole as if employing simple tool or iron wire etc., is stopped by convex block 10 because increased convex block 10 in keyhole, can't the application of force attempt unblanking, and can prevent better that thus the thieves or robbers who act under cover of night from unblanking to commit theft.

Being specific embodiment of the utility model only below, is not the restriction to the utility model interest field, allly is equal to improvement according to what design concept of the present utility model was done, all should fall into protection category of the present utility model.

Claims

1. a fit structure that improves the lock safety is characterized in that: at the keyhole inwall formation convex block of lock body for the key plant, forming the groove that cooperates with the convex block on the key.

2. a kind of fit structure that improves the lock safety as claimed in claim 1, it is characterized in that: described lock body forms the convex block at the lockhole inwall of lock housing.

3. a kind of fit structure that improves the lock safety as claimed in claim 1, it is characterized in that: described lock body forms the convex block at the lockhole inwall of inner core.

4. a kind of fit structure that improves the lock safety as claimed in claim 1, it is characterized in that: described lock body forms the convex block at the jack inwall of locking plate.

5. a kind of fit structure that improves the lock safety as claimed in claim 1, it is characterized in that: described convex block has two, two convex blocks be parallel to each other and two convex blocks between have a gap.

As claimed in claim 5 a kind of improve the lock safety fit structure, it is characterized in that: the inner of described two convex blocks all surpasses the center line of keyhole, namely two convex blocks is inner interlaced, has a gap between the alternating share.