CN218234719U

CN218234719U - Anti-theft door lock

Info

Publication number: CN218234719U
Application number: CN202221675328.XU
Authority: CN
Inventors: 徐伟光
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-01-06
Anticipated expiration: 2032-07-01

Abstract

The utility model provides a security door lock, including the lock casing, the lock lid, the lock handle, a plurality of spring bolts and spring bolt support, it is equipped with the lock core overcoat to be located the lock core in the lock casing on the cover, the fixed locking lever that is provided with of lower extreme of lock core overcoat, the epaxial fixed drive plate that is provided with of lock handle in the lock casing inboard, a plurality of spring bolts are inserted respectively and are established in a plurality of spring bolt through-holes, be provided with slip mouth and location slip mouth on the spring bolt support respectively, the fixed setting on the lock casing inner wall of one end of locating lever. The lower end of the rear part of the lock tongue support is fixedly connected with a connecting rod through a pin shaft, and the other end of the connecting rod is connected with a lock rod through a pin shaft. The utility model is suitable for a safe door, file cabinet door and burglary-resisting door use, owing to adopted the lock core unrotatable, only lock core overcoat revolution mechanic can avoid effectively because of adopting special and self-control unlocking tool, and it is rotatory to adjust the lock core easily, makes the phenomenon that the pellet shot from a slingshot drops and unblanks take place.

Description

Anti-theft door lock

Technical Field

The utility model relates to a safety theftproof technical field especially relates to a lock that various cabinet doors and burglary-resisting door used.

Background

The existing door locks are various, the mechanical spring lock is one of the door locks which is commonly applied, the application field of the traditional mechanical lock is very wide, destructive unlocking is difficult to open, technical unlocking is easy to master, the technology can be master from the Internet and books, the lock is easy to open by utilizing a special and homemade unlocking tool under the operation of people with unlocking skills, a plurality of thieves master the technology at present, the rate of the technical unlocking entering rooms for theft cases is increased year by year, and therefore, the technical unlocking prevention is an effective means for improving the theft prevention.

By analyzing the special unlocking mode, the situation that the lock core is rotated and the marbles are adjusted while the special tool or other modes are used can be found, and finally the lock core is rotated to open the door lock after the marbles in the lock core are aligned one by one.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a simple structure, it is effectual to prevent burglary, and the thief can't judge that the pellet shot from a slingshot is a security door lock that the person counterpoints one by one.

The utility model adopts the technical proposal that:

the utility model provides a security door lock, includes lock casing, lock lid, lock handle, a plurality of spring bolt and spring bolt support, its main points are the fixed knot of lock lid establish on the lock casing, the lateral wall of lock casing on be provided with a plurality of spring bolt through-holes respectively, be provided with lockhole and handle mounting hole on the rear end face of lock casing respectively, lock and lock core are fixed to be installed in the lockhole, lie in the lock core in the lock casing and overlap and be equipped with the lock core overcoat, the fixed locking lever that is provided with of lower extreme of lock core overcoat. The door lock handle is arranged in the handle mounting hole, a transmission disc is fixedly arranged on a shaft of the door lock handle positioned on the inner side of the door lock shell, and an eccentric shaft rod is fixedly arranged on one side of the transmission disc. The door lock is characterized in that the plurality of lock tongues are fixedly arranged on the front end face of the lock tongue support respectively, the plurality of lock tongues are inserted into the plurality of lock tongue through holes respectively, a transmission disc shaft rod is perpendicularly arranged on the lock tongue support and is inserted into a sliding opening for movement, a positioning sliding opening is transversely arranged on the lock tongue support at the rear part of the sliding opening, a positioning rod is inserted into the positioning sliding opening, and one end of the positioning rod is fixedly arranged on the inner wall of the door lock shell. The lower end of the rear part of the lock tongue support is fixedly connected with a connecting rod through a pin shaft, and the other end of the connecting rod is connected with the lock rod through a pin shaft.

The plurality of spring bolts extend out and lock, the door lock is unlocked by inserting a key, the door lock handle is rotated downwards for 90 degrees, the transmission disc and the eccentric shaft rod rotate for 90 degrees to drive the spring bolt support to move backwards, and the plurality of spring bolts are retracted and unlocked.

The utility model discloses compare with traditional mechanical lock core, have following advantage and positive effect:

1. the utility model is suitable for safe doors, file cabinet doors and security doors, when no key is inserted into the lock core, the lock core outer sleeve is in a dead state, and the door lock handle can not rotate;

2. the utility model can only lock or unlock a plurality of lock tongues by rotating the lock handle to drive the lock core outer sleeve to rotate when a key is inserted into the lock core marble to fall off;

3. the utility model adopts the lock core which can not rotate and only has the lock core outer sleeve rotating structure, thereby effectively avoiding the phenomenon that the lock core is easily adjusted to rotate to cause the marble to fall off and unlock because of adopting a special and self-made unlocking tool; 4. the utility model discloses if unblank with the screwdriver brute force, the lock core can't twist reverse, and main lock core is motionless, and the lock core overcoat can not be prized open and rotate.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the door lock handle and the door lock of the present invention;

fig. 3 is a schematic view of the internal structure of the door lock case in the locked state;

fig. 4 is a schematic view of the internal structure of the door lock case in the unlocked state of the present invention;

fig. 5 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-5, a security door lock, including lock casing 1, lock lid 2, lock handle 3, a plurality of spring bolt 4 and spring bolt support 5, its main points are lock lid 2 fixed knot establish on lock casing 1, the antetheca of lock casing 1 on be provided with three spring bolt through-hole 6 respectively, be provided with lockhole 7 and handle mounting hole 8 on the lateral wall of lock casing 1 respectively, lock 9 and its lock core are fixed to be installed in lockhole 7, lock 9 is fixed setting with the lock core, the unable rotation of lock core. A lock core outer sleeve 10 is sleeved on the lock core in the door lock shell 1, and the unlocking of the lock core outer sleeve 10 and the lock core is the prior art and will not be described in detail here. When the lock core is inserted into a key, the pin tumbler falls off and the lock core outer sleeve 10 can rotate, and the lock rod 11 is fixedly arranged at the lower end of the lock core outer sleeve 10. The door lock handle 3 is arranged in the handle mounting hole 8, a transmission disc 12 is fixedly arranged on a shaft of the door lock handle 3 positioned on the inner side of the door lock shell 1, and an eccentric shaft lever 16 is fixedly arranged on one side of the transmission disc 12. The plurality of lock tongues 4 are respectively and fixedly arranged on the front end surface of the lock tongue support 5, the plurality of lock tongues 4 are respectively inserted into the plurality of lock tongue through holes 6, an eccentric shaft lever 16 is vertically arranged on the lock tongue support 5 and is inserted into a sliding opening 13 for movement, and the transmission disc 12 drives the lock tongue support 5 to move back and forth through the shaft lever of the transmission disc when rotating. A positioning sliding opening 14 is transversely arranged on the bolt support 5 at the rear part of the sliding opening 13, a positioning rod 15 is inserted in the positioning sliding opening 14, one end of the positioning rod 15 is fixedly arranged on the inner wall of the door lock shell 1, and the positioning rod 15 plays a positioning role when the bolt support 5 moves back and forth. The lower end of the rear part of the bolt support 5 is fixedly connected with a connecting rod 17 through a pin shaft, and the other end of the connecting rod 17 is connected with the lock rod 11 through a pin shaft.

The utility model discloses when using, insert the key pellet shot from a slingshot unblock back that drops at 9 lock cores of lock, lock core overcoat 10 is rotatable, makes spring bolt support 5 be in portable state. The door lock handle 3 is rotated downwards by 90 degrees, the driving disc 12 and the eccentric shaft lever 16 rotate by 90 degrees to drive the bolt bracket 5 to move backwards, and the three bolts 4 are retracted to be unlocked.

Claims

1. A kind of theft-proof door lock, including the door lock body (1), door lock body of the body (2), door lock handle (3), a plurality of lock bolts (4) and lock bolt support (5), its characteristic is that the said door lock body of the body (2) is fixed to be buckled on the body (1) of the door lock, there are a plurality of lock bolt through holes (6) on the front wall of the said body (1) of the door lock respectively, there are lockholes (7) and handle mounting holes (8) on the sidewall of the body (1) of the door lock respectively, the door lock (9) and lock core are fixed to be installed in the lockhole (7), the lock core overcoat (10) is fitted over locating the lock core in the body (1) of the door lock, the bottom end of the lock core overcoat (10) is fixedly provided with the lock lever (11); the door lock handle (3) is arranged in the handle mounting hole (8), a transmission disc (12) is fixedly arranged on a shaft of the door lock handle (3) positioned on the inner side of the door lock shell (1), and an eccentric shaft lever (16) is fixedly arranged on one side of the transmission disc (12); the lock bolt is characterized in that the plurality of lock bolts (4) are respectively and fixedly arranged on the front end surface of the lock bolt support (5), the plurality of lock bolts (4) are respectively inserted into the plurality of lock bolt through holes (6), an eccentric shaft rod (16) is vertically arranged on the lock bolt support (5) and is inserted into a movable sliding opening (13), a positioning sliding opening (14) is transversely arranged on the lock bolt support (5) positioned at the rear part of the sliding opening (13), a positioning rod (15) is inserted into the positioning sliding opening (14), and one end of the positioning rod (15) is fixedly arranged on the inner wall of the door lock shell (1); the lower end of the rear part of the bolt support (5) is fixedly connected with a connecting rod (17) through a pin shaft, and the other end of the connecting rod (17) is connected with the lock rod (11) through a pin shaft.

2. A security door lock according to claim 1, characterized in that said plurality of bolts (4) is three bolts.

3. The anti-theft door lock according to claim 1, characterized in that the door lock (9) is unlocked by inserting a key, the door lock handle (3) is rotated downwards by 90 degrees, the transmission disc (12) and the eccentric shaft lever (16) are rotated by 90 degrees to drive the bolt bracket (5) to move backwards, and the bolts (4) are retracted to be unlocked.