CN200964729Y

CN200964729Y - Theft-proof hidden lock

Info

Publication number: CN200964729Y
Application number: CN 200620138343
Authority: CN
Inventors: 包俊鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-22
Filing date: 2006-09-22
Publication date: 2007-10-24
Anticipated expiration: 2016-09-22

Abstract

A theft-proof concealed lock comprises a body, a lock core, a lock tongue and a key matching with the lock core. The utility model is characterized in that the lock core is concealed in the body and rotatably matches with the body that is provided with an L-shaped groove and is connected with the key hole in the lock core. The key that matches with the lock core presents an L shape and dynamically matches with the L-shaped groove, through which the key head inserts into the key hole and dynamically matches with the key hole. The lock core joins with the lock tongue through a connecting mechanism. In the utility model, the lock core is concealed in the body, and the key hole is invisible in the surface of the lock or the door. Only a specific and matched key stem can insert into the L-shaped groove and only a specific key head can unlock the lock, therefore, thieves can not use a master key and other unlocking tools to open the lock and conduct stealing activities; the device truly executes the function of theft proofing and creates a safe environment for people.

Description

Anti-theft built-in lock

Technical field

The utility model relates to a kind of security door, rolling-gate, automotive door, safety cabinet etc. of being used for and goes up theftproof lock, specifically is a kind of anti-theft built-in lock.

Background technology

At present, lock core, the keyhole of so-called theftproof lock all are exposed on the shop front, and can buy unlocking tool everywhere on market, acquire the technical ability of unblanking, the thief can utilize the unlocked by universal key door lock to carry out stealthy activity easily, and this is everybody well known fact.Theftproof lock or antitheft locking a door are performed practically no function for these thieves thus, and therefore, people are badly in need of a kind of theftproof lock that really plays antitheft effect,

Summary of the invention

Its destination of the utility model is: a kind of anti-theft built-in lock is provided, it can overcome with the weak point of locking, it is not exposed to the outside with lock core, keyhole, the thief can not utilize master key and other unlocking tool unlatching door lock to carry out stealthy activity like this, it can really play antitheft effect, thereby it can make a stable environment to people.

The purpose of this utility model is to realize like this; A kind of anti-theft built-in lock, comprise lock body, lock core, dead bolt and the key that cooperates with lock core, described lock core is hidden in the lock body and with lock body and is rotatably assorted, " L " type groove is set on the lock body to be communicated with the keyhole of lock core, the key that lock core cooperates is the L type, key and " L " type groove movingly, key bit inserts after by " L " type groove in the keyhole also with it movingly again; Lock core connects with dead bolt by bindiny mechanism.

Described bindiny mechanism is a crank connecting rod sliding block mechanism, the plate of dialling as crank is arranged on the lock core top, dial and to be provided with on the plate and dead bolt chute in the same way, the dead bolt lower end is connected with pallet by return spring, pallet is articulated in pull bar, the bearing pin of pull bar lower end or hook insert in the chute, and are slidingly matched with it.

Described key is by handle and key bit is hinged forms, and (2 maximum angle of release is fixed on mutually on the upright position with key bit and handle by limited block.

Lock core of the present utility model is hidden in the lock body, does not expose keyhole on the locking face or on the shop front, has only a narrow L type groove on it.So, can only use the special-purpose key bar that cooperates with it could insert this L type groove, can only be to use special-purpose key bit could open this lock again.The thief can not utilize master key and other unlocking tool unlatching door lock to carry out stealthy activity like this, and it can really play antitheft effect, thereby it can make a stable environment to people.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model lock outside structural representation;

Fig. 3 is lock core and dead bolt bindiny mechanism enlarged diagram;

Fig. 4 is the key working state schematic representation;

Fig. 5 is a key folded state schematic diagram.

The specific embodiment

Embodiment 1

A kind of improvement type anti-theft built-in lock, as shown in Figure 1, it comprises lock body 1, lock core 7, dead bolt 6 and the key 2 that cooperates with lock core 7, described lock core 7 is hidden and is fixed in the lock body 1, " L " type groove 9 is set on the lock body 1 to be communicated with the keyhole 8 of lock core 7, the key that lock core 7 cooperates is the L type, L type key and " L " type groove 9 movingly, key enters " L " type groove 9 back key bits 2 and keyhole 8 movingly.

Described lock core 7, dead bolt 6 and the key bit 2 that cooperates with lock core 7 and they are coupled to each other the member that mechanism all adopts the general spring lock on the market, only former lock body is improved as on the lock body 1 as shown in Figure 1, 2 " L " type of setting groove 9 and is communicated with the keyhole 8 of lock core 7.

Described key bit 2 adopts original key further to improve, and is at the hinged handle 201 of its root, and, and by limited block 202 the maximum angle of release of key bit 2 with handle 201 is fixed on the mutual upright position.

Stop pin when opening or locking is set on the described lock body 1, is known technology, seldom state.

Mode of occupation:

One, anti-theft built-in lock locking:

It is the same with general spring lock, needs only one and closes the door, and dead bolt 6 locks anti-theft built-in lock under the effect of return spring pressure immediately.

Two, the process of unblanking:

At first the handle of key is opened and the key bit upright position, after L type key being inserted " L " type groove 9 of lock body 1, by handle key bit 2 is inserted in the keyhole, to horizontal groove direction turning handle, the plate 3 of dialling on the lock core 7 rotating band movable lock cores 7 is pass on group plate 3 ', pull bar 4 is down to pull bar 4 ', and when dead bolt 6 was moved downward to 6 ' of dead bolt, this anti-theft built-in lock was opened.As shown in Figure 1.

Embodiment 2

A kind of anti-theft built-in lock, as shown in Figure 1, its structure is substantially with embodiment 1, it comprises lock body 1, lock core 7, dead bolt 6 and the key 2 that cooperates with lock core 7, described lock core 7 is hidden in the lock body 1 and with lock body 1 and is rotatably assorted, and " L " type groove 9 is set on the lock body 1 is communicated with the keyhole 8 of lock core 7, and the key that lock core 7 cooperates is the L type, key and " L " type groove 9 movingly, key bit insert again after by " L " type groove 9 in the keyhole 8 also movingly; Lock core 7 connects with dead bolt 6 by bindiny mechanism.

Described bindiny mechanism is a crank connecting rod sliding block mechanism, the plate 3 of dialling as crank is arranged on lock core 7 tops, dial and to be provided with on the plate 3 and dead bolt 6 chute 301 in the same way, dead bolt 6 lower ends are connected with pallet by return spring, pallet is articulated in pull bar 4, the bearing pin of pull bar 4 lower ends or hook insert in the chute 301, and are slidingly matched with it.

Described key is by handle 201 and key bit 2 hinged forming, and by limited block 202 key bit 2 and the maximum angle of release of handle 201 is fixed on the mutual upright position.

Mode of occupation and effect are not repeated with embodiment 1.

Experimental results show that: lock core of the present utility model is hidden in the lock body, does not expose keyhole on the locking face or on the shop front, has only a narrow L type groove on it.So, can only use the special-purpose key bar that cooperates with it could insert this L type groove, can only be to use special-purpose key bit could open this lock again.The thief can not utilize master key and other unlocking tool unlatching door lock to carry out stealthy activity like this, and it can really play antitheft effect, thereby it can make a stable environment to people.

Claims

1, a kind of anti-theft built-in lock, comprise lock body (1), lock core (7), dead bolt (6) and the key (2) that cooperates with lock core (7), it is characterized in that: described lock core (7) is hidden in the lock body (1) and with lock body (1) and is rotatably assorted, lock body (1) is gone up setting " L " type groove (9) and is communicated with the keyhole (8) of lock core (7), the key that lock core (7) cooperates is the L type, key and " L " type groove (9) movingly, key bit inserts after by " L " type groove (9) in the keyhole (8) also with it movingly again; Lock core (7) connects with dead bolt (6) by bindiny mechanism.

2, anti-theft built-in lock as claimed in claim 1, it is characterized in that: described bindiny mechanism is a crank connecting rod sliding block mechanism, the plate (3) of dialling as crank is arranged on lock core (7) top, dial last setting of plate (3) and dead bolt (6) chute in the same way, dead bolt (6) lower end is connected with pallet by return spring (5), pallet is articulated in pull bar (4), and the bearing pin of pull bar (4) lower end or hook insert in the chute (301), and are slidingly matched with it.

3, anti-theft built-in lock as claimed in claim 1 is characterized in that: described key is by handle (201) and hinged the forming of key bit (2), and (201 maximum angle of release is fixed on the mutual upright position with handle with key bit (2) by limited block (202).