CN111335748A

CN111335748A - Door lock

Info

Publication number: CN111335748A
Application number: CN202010305437.1A
Authority: CN
Inventors: 林靖
Original assignee: Shanghai Indeman Intelligent Technology Co ltd
Current assignee: Shanghai Indeman Intelligent Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-06-26
Anticipated expiration: 2040-04-17
Also published as: CN111335748B

Abstract

The invention provides a door lock, and belongs to the technical field of door locks. It has solved the inconvenient problem of operation when user's unblock. The unlocking mechanism comprises a lock box and a square bolt and an oblique bolt assembly which are arranged on the lock box and can stretch out and draw back, an elastic locking block assembly perpendicular to the oblique bolt assembly is arranged in the lock box in a sliding mode, the elastic locking block assembly can slide under the action of self elasticity to lock the oblique bolt assembly extending out of the lock box, an unlocking assembly with a force applying arm and a force receiving arm and an unlocking assembly capable of driving the square bolt to retract when rotating are hinged in the lock box respectively, the end part of the force applying arm is inserted into the elastic locking block assembly to form linkage, the length of the force receiving arm is larger than that of the force applying arm, the force receiving arm is located on one side of the unlocking assembly, an action part is arranged on the unlocking assembly, and the action part can act on one side, close to the end part, of the force receiving arm to enable the unlocking. The novel unlocking device has the advantages of convenience in unlocking, labor saving, reliability, stability and the like.

Description

Door lock

Technical Field

The invention belongs to the technical field of door locks, and relates to a door lock.

Background

In the conventional mortise door lock, an auxiliary bolt such as a latch bolt assembly is usually provided to improve the safety of the door lock, in addition to the function of locking the door by using a dead bolt as a main bolt. The latch bolt assembly always keeps a state of extending out of the lock box in a normal state, and when the door is closed, the latch bolt assembly is firstly inserted into a slot on the door frame, and then the control mechanism in the door lock controls the square bolt to extend out of the lock box and be inserted into a corresponding slot on the door frame to realize complete locking. The bolt assembly and the dead bolt are the most reasonable locking sequence, and the bolt assembly can play the primary positioning role of the door and the door frame after being inserted into the slot, so that the follow-up dead bolt can be ensured to be locked easily.

Furthermore, in order to ensure that the door lock can continue the locking function even when the dead bolt cannot normally operate, a locking assembly is generally disposed in the lock box, which can push the locked dead bolt assembly against the lock box so that the dead bolt assembly cannot retract into the lock box. At present, in the conventional door lock with the locking assembly, the action of the locking assembly is operated through an unlocking piece independent of the unlocking of the dead bolt, namely, after the dead bolt is unlocked by a user, the unlocking piece is required to be manually operated to control the action of the locking assembly to unlock the latch bolt assembly. With the structure, the unlocking steps are multiple and the operation is very inconvenient.

In order to improve the operation convenience when the user unlocks, the current common design mode is that a relationship is established between the unlocking piece and the square tongue retracted into the lock box by using some mechanical structures, and when the square tongue is retracted into the lock box, the unlocking piece is driven by the mechanical structures to act so as to realize the linkage unlocking of the oblique tongue assembly, such as an unlocking linkage mechanism and a door lock disclosed by the patent application number 201721876571.1; yet another design relies on the action of a dead bolt to unlock the latch bolt assembly, but it eliminates the use of a release lock, such that the dead bolt acts directly on the lock assembly that locks the latch bolt assembly during retraction, as disclosed in patent application No. 201810681858.7 or in patent application No. 201910486834.0.

Disclosure of Invention

The invention aims to provide a door lock aiming at the problems in the prior art, and solves the problem that the operation is inconvenient when a user unlocks the door lock.

The purpose of the invention can be realized by the following technical scheme:

the lock, including the lock box and all set up on the lock box and can carry out the square bolt and the oblique tongue subassembly that stretch out and draw back, the lock box in slide and be provided with oblique tongue subassembly looks vertically elasticity locking block subassembly, elasticity locking block subassembly can slide under self elastic action and will stretch out the locking of the outer oblique tongue subassembly of lock box, in the lock box articulated respectively have the unlocking wheel subassembly that can drive the square bolt withdrawal when having the arm of force of exerting and receiving arm of force and rotating, arm of force tip inserts elasticity locking block subassembly and forms the linkage, a serial communication port, arm of force length be greater than the length of the arm of exerting, the arm of force is located one side of unlocking wheel subassembly, has the effect portion on the unlocking wheel subassembly, the effect portion can be used in the arm of exerting and lean on near end portion one side messenger unlocking piece swing and the unlocking of oblique tongue subassembly when the unlocking wheel subassembly rotates.

When the door lock is locked, the latch bolt assembly firstly extends out of the lock box and is inserted into a corresponding slot on the door frame, then the elastic locking block assembly slides under the action of the elasticity of the elastic locking block assembly to lock the latch bolt assembly extending out of the lock box, so that the latch bolt assembly always keeps the state of extending out of the lock box, and finally the square bolt extends out of the lock box and is inserted into the corresponding slot on the door frame. When unlocking, the unlocking wheel component is controlled to rotate, so that the square tongue is retracted into the lock box. Simultaneously, the effect portion on the unblocking wheel subassembly is used in atress arm tip one side of unblocking piece for the unblocking piece is round the pin joint swing, and then controls elasticity locking piece subassembly reverse slip and unblock oblique tongue subassembly by the arm of force of exerting on the unblocking piece.

In the door lock, the synchronous unlocking of the dead bolt and the oblique bolt component is realized through the rotation of the unlocking wheel component, the user does not need to manually unlock the oblique bolt component, and the unlocking convenience of the user is well improved. Simultaneously, compare in the mode that utilizes linkage unlocking piece action in the square bolt retraction process, as long as the square bolt is in the retraction state so the elastic locking block subassembly just can't lock the oblique tongue subassembly that stretches out outside the lock box, mean that the order of locking of lock under this mode can only be the oblique tongue subassembly of locking after stretching out the square bolt earlier, can have a hidden danger like this: when the latch bolt assembly is unlocked, the connection between the door lock and the door frame is unstable, and at the moment, the situation that the latch bolt assembly is pulled out from the door frame to cause locking failure is likely to occur. That is to say, the reasonable locking process of the door lock is destroyed by using the mode of linkage unlocking piece action in the retraction process of the dead bolt, so that the reliability and the stability are insufficient. In the door lock, the unlocking of the latch bolt assembly is directly realized by matching the action part on the unlocking wheel assembly with the stressed arm on the unlocking piece, namely, the action of the latch bolt is not relied on, so that the locking of the latch bolt assembly by the elastic locking block assembly is not interfered by the latch bolt, and the door lock has higher reliability and stability while the unlocking convenience is improved. Moreover, when the dead bolt can not be locked normally, the door lock can be used continuously by locking the oblique bolt assembly, and the locking function can be completely lost when the dead bolt can not be normally operated by utilizing the mode of linkage unlocking piece action in the retraction process of the dead bolt. In addition, the length of the force receiving arm is larger than that of the force applying arm, and the action position of the action part is just right on one side of the end part of the force receiving arm, so that a labor-saving lever with the power arm larger than the resistance arm is formed during unlocking, and the unlocking device has the effects of being more labor-saving and light during unlocking.

In the door lock, the square tongue and the stress arm are positioned at two sides of the unlocking wheel assembly, a groove is formed in the position, close to the unlocking wheel assembly, of the square tongue, a shifting block capable of being clamped into the groove during unlocking is arranged on the side portion of the unlocking wheel assembly, and the shifting block and the action portion extend out of the outer peripheral surface of the unlocking wheel assembly along two angles.

The unlocking wheel component rotates to unlock the door lock, the shifting block on the peripheral surface of the unlocking wheel component applies acting force to the groove wall of the groove to pull the dead bolt back into the lock box, and the acting part applies acting force to one side of the end part of the stressed arm to enable the unlocking piece to swing to unlock the latch bolt component.

The shifting block and the action part extend out from the outer peripheral surface of the unlocking wheel assembly along two angles, so that the door lock can unlock the dead bolt and the latch bolt assembly only by rotating the unlocking wheel assembly, and the operation convenience of a user is improved; the unlocking of the dead bolt and the unlocking of the oblique bolt component are not related to each other, and the dead bolt can be locked in a reasonable mode to ensure the reliability and the stability.

In the above-mentioned lock, the unblock wheel subassembly include can the pivoted thumb wheel, lock box internal fixation has the motor that can control the thumb wheel rotation and lock or unblock, the thumb block is located on the thumb wheel outer peripheral face, the effect portion includes the effect piece of protrusion on the thumb wheel outer peripheral wall, the effect piece can be when electronic unblock roof pressure atress arm tip lateral wall, and the square tongue is locked back effect piece and atress arm phase separation.

In foretell lock, the unblock wheel subassembly still can pivoted unblock gear when including manual unblock, unblock gear and thumb wheel coaxial line set up and can drive the thumb wheel when unblock gear revolve and rotate, unblock gear periphery wall is equipped with the breach, the effect portion still including be located the breach diapire and with the circular arc action face of unblock gear periphery wall eccentric settings, the circle diameter that the circular arc action face corresponds is greater than the diameter of unblock gear's periphery wall, can roof pressure atress arm tip one side through circular arc action face when unblock gear revolve.

The door lock is divided into an electric unlocking mode and a manual unlocking mode: when the unlocking is carried out electrically, the motor directly drives the shifting wheel to rotate, the shifting block on the shifting wheel pulls the square tongue back into the lock box, and the action block on the shifting wheel acts on one side of the end part of the force receiving arm to enable the unlocking piece to swing to unlock the inclined tongue assembly; when the motor fails and cannot be unlocked electrically, manual unlocking is needed, the handle on the rotating door drives the unlocking gear to rotate, the unlocking gear drives the shifting wheel to rotate to enable the shifting block to pull back the square tongue, and meanwhile, the arc acting surface acts on one side of the end part of the force receiving arm in the rotating process of the unlocking gear to enable the unlocking piece to swing to unlock the inclined tongue assembly. No matter the mode is electronic unblock or manual unblock, all have higher unblock convenience, can make the oblique tongue subassembly not rely on the effect of dead bolt to unblock again simultaneously and guarantee reliability and stability.

In the door lock, the lock box is internally provided with a driving gear which forms a linkage relation with the output shaft of the motor, the unlocking wheel assembly further comprises a driven gear which is meshed with the driving gear, the driven gear and the shifting wheel are coaxially arranged, the end face of the driven gear is provided with an arc-shaped guide groove, the end face of the shifting wheel is provided with a convex block which is positioned in the arc-shaped guide groove and can move along the arc-shaped guide groove, and the notch of the groove is in an expanding shape which can lead the shifting block into or out of the.

After the latch bolt assembly is locked by the elastic locking block assembly, the motor is started and drives the driven gear to rotate through the driving gear. When the driven gear rotates to the position that the side wall of the arc-shaped guide groove abuts against the side wall of the bump, the driven gear drives the shifting wheel to rotate, so that the shifting block is guided into the groove from the notch of the groove, and the shifting wheel can push the square bolt out through the shifting block to be locked. The arc-shaped guide groove is arranged to make up the problem that the motor is likely to be unlocked or not in place due to insufficient control precision, and the reliability and the stability are further improved.

In the door lock, the outer peripheral wall of one end face of the unlocking gear is provided with a plurality of teeth I, a rotatable handle shifting block is further arranged in the lock box, the handle shifting block is provided with a plurality of teeth II meshed with the teeth I, the edge of the other end face of the unlocking gear is provided with a stop block, and when the dead bolt is locked, one side wall of the shifting block abuts against one side wall of the stop block.

When the lock is locked, the square bolt is pushed out of the lock box by the shifting block in the guiding groove on the shifting wheel, and one side wall of the shifting block rotates along with the shifting wheel to abut against one side wall of the stop block. When rotating the handle and carrying out manual unblock, the handle passes through the square bar and drives the handle thumb wheel rotation to drive the unblock gear rotation with the help of the meshing of tooth one and tooth two, make the unblock gear lean on and take the thumb wheel rotation to pull back the square bolt in the lock box through dog and shifting block counterbalance, with the help of the circular arc active surface direct action on the unblock gear simultaneously receives the arm of force on with the latch bolt subassembly unblock.

In the door lock, the length of the force-bearing arm is 2-3 times of the length of the force-bearing arm.

In the door lock, an included angle between the stress arm and the force applying arm is an obtuse angle.

The length of the force receiving arm is 2-3 times of the length of the force applying arm, and the included angle between the force receiving arm and the force applying arm is an obtuse angle, so that the oblique tongue component can be unlocked more conveniently and more laborsavingly.

In foretell lock, elasticity locking piece subassembly include locking elastic element and be rectangular massive locking block, a terminal surface of locking block is equipped with the boss, be equipped with the flange along withdrawal lock box direction on the oblique tongue subassembly, the locking block has the trend that makes the flange support by on the boss to oblique tongue subassembly removal all the time under locking elastic element's effect, other end one side of locking block is equipped with the cooperation groove, the arm of force of exerting inserts the cooperation inslot.

After the oblique tongue assembly extends out of the lock box, the locking block body moves towards the oblique tongue assembly under the elastic force of the locking elastic element, so that the boss abuts against the convex plate to block a path for retracting the oblique tongue assembly into the lock box, and the oblique tongue assembly is locked. When unlocking, the unlocking piece is driven by the unlocking wheel component to swing so as to pull back the locking block body, and the lug boss is separated from the lug plate.

In foretell lock, the locking block be equipped with the one end face of boss have the breach, lock box internal fixation has the stopper of shape and breach looks adaptation, the flange supports with the boss and leans on when the locking block removes to the stopper card when going into in the breach.

The moving distance of the locking block body is controlled by the matching of the limiting block and the notch, and the lug plate and the lug boss can be accurately matched to lock the latch bolt assembly.

Compared with the prior art, the door lock has the following advantages:

1. synchronous unlocking of the dead bolt and the oblique bolt assembly is realized through rotation of the unlocking wheel assembly, a user does not need to manually unlock the oblique bolt assembly, and unlocking convenience of the user is well improved;

2. the unlocking piece is directly driven by the action part on the unlocking wheel component and does not depend on the action of the dead bolt, so that the elastic locking block component is not interfered by the dead bolt when locking the oblique dead bolt component, and the unlocking piece has higher reliability and stability;

3. a labor-saving lever with a power arm larger than a resistance arm is formed during unlocking, so that the effect of labor saving and portability during unlocking is achieved;

4. the unlocking gear, the shifting wheel and the driven gear are coaxially arranged, the unlocking gear and the shifting wheel can form a linkage relation only through the matching of the shifting block and the stop block during manual unlocking, the driven gear and the shifting wheel can form a linkage relation only through the matching of the arc-shaped guide groove and the convex block during electric unlocking, redundant transmission mechanisms are saved, and the structure is well simplified while the manual unlocking and the electric unlocking functions are achieved.

Drawings

Fig. 1 is a schematic view of the inside of the first embodiment of the present door lock when the door lock is unlocked.

Fig. 2 is a schematic view of the back side of the inside of the first embodiment when the door lock is unlocked.

Fig. 3 is a rear view of the door lock between the cam bolt assembly, the latch bolt assembly and the lock block.

Fig. 4A is a schematic view of an unlocking wheel assembly in the present door lock.

Fig. 4B is another angular schematic view of the unlocking wheel assembly of the present door lock.

Fig. 5A is an exploded schematic view at the unlocking wheel assembly.

Fig. 5B is another angularly exploded schematic view at the unlocking wheel assembly.

Fig. 6 is a schematic front view of the inside of the door lock after locking.

Fig. 7 is a schematic view of the inside front of the present door lock when the electric unlocking is completed.

Fig. 8 is a schematic view of the inside front of the present door lock when the manual unlocking is completed.

In the figure, 1, lock box; 2. a square tongue; 2a, a groove; 2b, a limiting head; 3. a latch bolt assembly; 3a, a latch rod; 3a1, convex plate; 3b, inclining the tongue; 3c, a second supporting spring; 4. an elastic locking block assembly; 4a, a locking block body; 4a1, boss; 4a2, mating groove; 4a3, a relief groove; 4a4, nose; 4b, locking elastic elements; 5. unlocking the lock; 5a, applying a force arm; 5b, a force-bearing arm; 6. an unlocking wheel assembly; 6a, an action part; 6b, a dial wheel; 6b1, a shifting block; 6b2, action block; 6b3, bumps; 6b4 and arc limiting plates; 6c, an unlocking gear; 6c1, arc action surface; 6c2, stop block; 6d, a driven gear; 6d1, arc guide slot; 7. a motor; 8. a driving gear; 9. a lever handle shifting peach; 10. a limiting block; 11. a triangular tongue assembly; 11a, a triangular tongue rod; 11a1, mating block; 11a2, a stopper; 11b, triangular tongue; 11c, supporting the first spring; 12. a gear box.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, 2 and 3, the door lock includes a lock case 1, and a square bolt 2, a latch bolt assembly 3 and a cam bolt assembly 11, which can extend out or retract into the lock case 1 along the same direction, wherein the square bolt 2 and the latch bolt assembly 3 are disposed at both sides of the cam bolt assembly 11. The triangular tongue assembly 11 comprises a triangular tongue rod 11a, a triangular tongue 11b connected to the end of the triangular tongue rod 11a and a first supporting spring 11c sleeved on the triangular tongue rod 11a, and the triangular tongue rod 11a always has the tendency that the triangular tongue 11b extends out of the lock box 1 under the elastic force action of the first supporting spring 11 c; the oblique tongue component 3 comprises an oblique tongue rod 3a, an oblique tongue head 3b connected to the end part of the oblique tongue rod 3a and a second supporting spring 3c sleeved on the oblique tongue rod 3a, and the oblique tongue rod 3a always has the tendency that the oblique tongue 3b extends out of the lock box 1 under the elastic force action of the second supporting spring 3 c.

As shown in fig. 1, 2 and 3, an elastic locking block assembly 4 is further slidably disposed in the lock case 1, a sliding direction of the elastic locking block assembly 4 is perpendicular to the latch bolt assembly 3, and the elastic locking block assembly 4 can slide under the action of its own elastic force to lock the latch bolt assembly 3 extending out of the lock case 1. Specifically, the elastic locking block assembly 4 includes a locking elastic element 4b and a locking block 4a in a rectangular block shape, and the locking block 4a can slide in the length direction of the locking block 4a in the lock box 1. One end face of the locking block 4a is provided with a boss 4a1, a lug plate 3a1 is arranged on the latch bolt rod 3a along the direction of retracting the lock box 1, and the elastic force of the locking elastic element 4b acts on the other end of the locking block 4a, so that the locking block 4a always has the tendency of moving towards the latch bolt assembly 3 under the elastic force of the locking elastic element 4b to enable the lug plate 3a1 to abut against the boss 4a1 to prevent the latch bolt assembly 3 from retracting.

As shown in fig. 1, in this embodiment, the locking elastic element 4b is a torsion spring, a positioning column is fixed in the lock box 1, the middle part of the torsion spring is sleeved on the positioning column, one end of the torsion spring acts on the inner wall of the lock box 1, and the other end of the torsion spring acts on the end face of the locking block 4 a. Of course, a spring may be used as the locking elastic member 4b in addition to the torsion spring. The locking block 4a one end face at boss 4a1 place has the breach, and lock box 1 internal fixation has the stopper 10 of shape and breach looks adaptation, and boss 4a1 is leaned on with the lug plate 3a1 when locking block 4a moves to stopper 10 embedding breach in.

As shown in fig. 3, the cam tongue bar 11a further has an engaging piece 11a1, the locking block 4a is provided with an avoiding groove 4a3, and the cam tongue bar 11a passes through the avoiding groove 4a 3. One side wall of the matching block 11a1 is provided with a limit part 11a2 which is obliquely arranged, the inner wall of the abdicating groove 4a3 is correspondingly provided with a raised head 4a4, the triangular tongue component 11 always extends out of the lock box 1 under the elastic force of the supporting spring 11c, and the limit part 11a2 is abutted against the raised head 4a4 to block the tendency that the locking block body 4a slides towards the inclined tongue component 3.

As shown in fig. 1 and 2, an unlocking member 5 is hinged in the lock box 1, the unlocking member 5 has a force applying arm 5a and a force receiving arm 5b, the length of the force receiving arm 5b is greater than that of the force applying arm 5a, the length of the force receiving arm 5b is 2 times that of the force applying arm 5a, and an included angle between the force receiving arm 5b and the force applying arm 5a is an obtuse angle. The side part of one end of the locking block body 4a acted by the locking elastic element 4b is provided with a matching groove 4a2, the force applying arm 5a is inserted into the matching groove 4a2, and when the force applying arm 5b is stressed, the unlocking piece 5 can swing around a hinge point to pull the locking block body 4a to the direction far away from the latch tongue component 3. An unlocking wheel assembly 6 is further hinged in the lock box 1, and the square bolt 2 can be driven to retract into the lock box 1 when the unlocking wheel assembly 6 rotates. The force receiving arm 5b is located on one side of the unlocking wheel assembly 6, an acting part 6a is arranged on the unlocking wheel assembly 6, and when the unlocking wheel assembly 6 rotates, the acting part 6a can act on one side of the end part of the force receiving arm 5b to enable the unlocking piece 5 to swing to unlock the latch bolt assembly 3. The square tongue 2 and the stressed arm 5b are positioned at two sides of the unlocking wheel assembly 6, a groove 2a is arranged at the position, close to the unlocking wheel assembly 6, on the square tongue 2, a shifting block 6b1 which is clamped in the groove 2a during unlocking is arranged at the side part of the unlocking wheel assembly 6, and the shifting block 6b1 and the action part 6a extend out from the outer peripheral surface of the unlocking wheel assembly 6 along two angles.

As shown in fig. 4A, 4B, 5A, and 5B, the unlocking wheel assembly 6 includes a dial 6B and a driven gear 6d that are both rotatable, and the dial 6B and the driven gear 6d are coaxially disposed. A motor 7 which can control the dial wheel 6b to rotate to lock or unlock is fixed in the lock box 1, a driving gear 8 which forms linkage relation with an output shaft of the motor 7 is arranged in the lock box 1, the driving gear 8 and the driven gear 6d are arranged in parallel and meshed with each other. Specifically, in the present embodiment, the lock box 1 is square, in order to reduce the thickness of the lock box 1, the output shaft of the motor 7 is transversely arranged, that is, the output shaft of the motor 7 is perpendicular to the axial direction of the thumb wheel 6b, the gear box 12 is fixed in the lock box 1, the driving gear 8 is integrated on the gear box 12, and the power of the output shaft of the motor 7 is transmitted to the driving gear 8 through the transmission inside the gear box 12. The gear box 12 is close to the unlocking wheel assembly 6, the side part of the gear box 12 is provided with an inward concave position, the force receiving arm 5b is positioned between the unlocking wheel assembly 6 and the inward concave position, and the force receiving arm 5b has a swinging space by means of the arrangement of the inward concave position. The end surface of the driven gear 6d is provided with an arc-shaped guide groove 6d1, and the end surface of the thumb wheel 6b is provided with a lug 6b3 which is positioned in the arc-shaped guide groove 6d1 and can move along the same. The shifting block 6b1 is arranged on the outer peripheral surface of the shifting wheel 6b, and the notch of the groove 2a is in a flaring shape which can lead the shifting block 6b1 to be led in or pulled out. The action part 6a comprises an action block 6b2 protruding out of the peripheral wall of the thumb wheel 6b, the action block 6b2 can press one side wall of the end part of the force receiving arm 5b when the motor 7 controls the thumb wheel 6b to rotate for electric unlocking, and the action block 6b2 is separated from the force receiving arm 5b after the square tongue 2 is locked.

As shown in fig. 4A, 4B, 5A and 5B, the unlocking wheel assembly 6 further includes an unlocking gear 6c capable of rotating during manual unlocking, the unlocking gear 6c is coaxially arranged with the dial wheel 6B, the dial wheel 6B is located between the unlocking gear 6c and the driven gear 6d, and the dial wheel 6B can be driven to rotate when the unlocking gear 6c rotates. Specifically, be equipped with a plurality of teeth one on the outer peripheral wall of unblock gear 6c one end face, lock box 1 internal fixation has the handle that can rotate to dial peach 9, is equipped with a plurality of teeth two that mesh mutually with tooth one on the handle dials peach 9, and another terminal surface border department of unblock gear 6c is equipped with dog 6c2, and a lateral wall and a dog 6c2 lateral wall of shifting block 6b1 support and lean on when the square tongue 2 locks. The peripheral wall of the unlocking gear 6c is provided with a notch, the acting part 6a further comprises an arc acting surface 6c1 which is positioned on the bottom wall of the notch and is eccentrically arranged with the peripheral wall of the unlocking gear 6c, the diameter of a circle corresponding to the arc acting surface 6c1 is larger than that of the peripheral wall of the unlocking gear 6c, and when the unlocking gear 6c rotates, one side of the end part of the force receiving arm 5b can be jacked through the arc acting surface 6c 1.

As shown in FIG. 1, when the door is opened, the latch bolt assembly 3 and the triangular bolt assembly 11 extend out of the lock box 1, and the square bolt 2 retracts into the lock box 1. Meanwhile, as the triangular tongue assembly 11 extends out of the lock box 1, the limiting part 11a2 is abutted against the raised head 4a4 so as to prop the elastic locking block assembly 4. When the door is closed, the latch bolt assembly 3 and the triangular bolt assembly 11 are both pressed by the door frame to retract into the lock box 1, when the door is embedded into the door frame, the triangular bolt assembly 11 keeps the state of retracting into the lock box 1, and the latch bolt assembly 3 extends out of the lock box 1 again and is inserted into a corresponding slot on the door frame. As the latch bolt assembly 11 is pressed into the lock case 1, the position of the stopper 11a2 is shifted from the protrusion 4a4, so that the locking block 4a moves toward the latch bolt assembly 3 under the elastic force of the locking elastic element 4b, and the protrusion 4a1 abuts against the protrusion plate 3a1 to hold the latch bolt assembly 3 in a state of being protruded out of the lock case 1, i.e., the latch bolt assembly 3 is locked. Then, the motor 7 is started and drives the driven gear 6d to rotate through the driving gear 8, when the driven gear 6d rotates until the arc-shaped guide slot 6d1 abuts against the side wall of the bump 6b3, the driven gear 6d drives the dial 6b to rotate so that the dial 6b1 is guided into the groove 2a from the notch of the groove 2a, so that the dial 6b can push out the square bolt 2 through the matching of the dial 6b1 and the inner wall of the groove 2a in the subsequent rotation, so that the square bolt 2 is inserted into the corresponding slot on the door frame to be locked, and the state of the door lock after being completely locked is shown in fig. 6.

The unlocking of the door lock is divided into two modes of electric unlocking and manual unlocking. Under the normal condition, can control the motor 7 and start and drive thumb wheel 6b counter-rotation when the user inputs normal fingerprint, thumb wheel 6b directly draws the square tongue 2 back to in the lock box 1 through the cooperation of thumb block 6b1 and recess 2a inner wall, and in thumb wheel 6 b's rotation in-process action block 6b2 can lean on and form the roof pressure with receiving arm of force 5b tip one side, make unlocking piece 5 can be round the pin joint swing, unlocking piece 5 this moment just can be through applying arm of force 5a with locking block 4a to keeping away from the pulling of 3 directions of oblique tongue subassembly and with oblique tongue subassembly 3 unblock, the state when this lock accomplished electronic unblock is shown in figure 7. During the electric unlocking, the unlocking gear 6c is always kept stationary.

When the motor 7 is in failure and cannot perform electric unlocking, a user can perform manual unlocking by rotating a handle on the door after inputting a normal fingerprint, wherein one side wall of a shifting block 6b1 on a shifting wheel 6b abuts against a stop 6c2 on an unlocking gear 6c after the square tongue 2 is locked. Handle on the door and the handle thumb wheel 9 in the lock box 1 utilize the square bar to form circumference fixed, the handle passes through the square bar and drives the handle thumb wheel 9 and rotate, and rotate with the help of tooth one and the meshing drive unblock gear 6c of tooth two, make unblock gear 6c promote thumb wheel 6b1 through dog 6c2 and draw back square tongue 2 in the lock box 1, simultaneously with the help of circular arc action face 6c1 on the unblock gear 6c in rotation in-process roof pressure receives arm of force 5b tip one side, make unblock piece 5 can swing round the pin joint, unblock piece 5 this moment just can be through applying arm of force 5a with locking block 4a to keeping away from 3 direction pulling of latch bolt subassembly and with 3 unblocks of latch bolt subassembly, the state when this lock accomplishes manual unblock is as shown in fig. 8.

As shown in fig. 1 and 2, a limiting column is further fixed in the lock case 1, and a notch is formed at the side of the square tongue 2, and the limiting column is clamped into the notch after the square tongue 2 is retracted into the lock case 1. Be connected with arc limiting plate 6b4 on the shifting block 6b1, arc limiting plate 6b4 is located between square tongue 2 and the lock box 1 inner wall, can guarantee like this that arc limiting plate 6b4 does not influence the normal cooperation of shifting block 6b1 and recess 2 a. A limiting head 2b is fixed on the surface of the square bolt 2 facing the inner wall of the lock box 1, and when the square bolt 2 retracts into the lock box 1, the arc-shaped limiting plate 6b4 is pressed against the side part of the limiting head 2b, so that the square bolt 2 keeps the state of retracting into the lock box 1. By means of the matching of the arc limiting plate 6b4 and the limiting head 2b, the square tongue 2 is limited, and the square tongue 2 is prevented from sliding randomly. The arc limiting plate 6b4 is directly integrated with the shifting block 6b1, so that the structure is simplified well.

Example two

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the length of the force receiving arm 5b is 2.5 times the length of the force applying arm 5 a.

EXAMPLE III

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the length of the force receiving arm 5b is 3 times the length of the force applying arm 5 a.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The door lock comprises a lock box (1), a square bolt (2) and an oblique bolt component (3) which are arranged on the lock box (1) and can be stretched, an elastic locking block component (4) which is perpendicular to the oblique bolt component (3) is arranged in the lock box (1) in a sliding mode, the elastic locking block component (4) can slide under the action of self elasticity to lock the oblique bolt component (3) extending out of the lock box (1), an unlocking component (5) with a force applying arm (5a) and a force receiving arm (5b) and an unlocking wheel component (6) capable of driving the square bolt (2) to retract during rotation are respectively hinged in the lock box (1), the end part of the force applying arm (5a) is inserted into the elastic locking block component (4) to form linkage, the door lock is characterized in that the length of the force applying arm (5b) is greater than that of the force applying arm (5a), and the force receiving arm (5b) is located on one side of the unlocking wheel component (6), the unlocking wheel assembly (6) is provided with an acting part (6a), and when the unlocking wheel assembly (6) rotates, the acting part (6a) can act on one side of the stressed arm (5b) close to the end part to enable the unlocking piece (5) to swing to unlock the latch bolt assembly (3).

2. The door lock according to claim 1, characterized in that the square tongue (2) and the force-receiving arm (5b) are located at two sides of the unlocking wheel assembly (6), a groove (2a) is arranged on the square tongue (2) at a position close to the unlocking wheel assembly (6), a shifting block (6b1) which can be clamped into the groove (2a) during unlocking is arranged at the side of the unlocking wheel assembly (6), and the shifting block (6b1) and the acting part (6a) extend out from the outer peripheral surface of the unlocking wheel assembly (6) along two angles.

3. The door lock according to claim 2, wherein the unlocking wheel assembly (6) comprises a rotatable thumb wheel (6b), a motor (7) capable of controlling the thumb wheel (6b) to rotate for locking or unlocking is fixed in the lock box (1), the thumb block (6b1) is arranged on the outer peripheral surface of the thumb wheel (6b), the action part (6a) comprises an action block (6b2) protruding out of the outer peripheral surface of the thumb wheel (6b), the action block (6b2) can press one side wall of the end part of the force receiving arm (5b) during electric unlocking, and the action block (6b2) is separated from the force receiving arm (5b) after the square tongue (2) is locked.

4. The door lock according to claim 3, characterized in that the unlocking wheel assembly (6) further comprises an unlocking gear (6c) which can rotate during manual unlocking, the unlocking gear (6c) is coaxially arranged with the thumb wheel (6b) and can drive the thumb wheel (6b) to rotate when the unlocking gear (6c) rotates, a notch is formed in the peripheral wall of the unlocking gear (6c), the acting part (6a) further comprises an arc acting surface (6c1) which is located on the bottom wall of the notch and is eccentrically arranged with the peripheral wall of the unlocking gear (6c), the diameter of a circle corresponding to the arc acting surface (6c1) is larger than the diameter of the peripheral wall of the unlocking gear (6c), and one side of the end of the force receiving arm (5b) can be pressed through the arc acting surface (6c1) when the unlocking gear (6c) rotates.

5. The door lock according to claim 4, wherein the lock box (1) is provided with a driving gear (8) which is linked with the output shaft of the motor (7), the unlocking wheel assembly (6) further comprises a driven gear (6d) which is meshed with the driving gear (8), the driven gear (6d) is coaxially arranged with the thumb wheel (6b), the end surface of the driven gear (6d) is provided with an arc-shaped guide groove (6d1), the end surface of the thumb wheel (6b) is provided with a lug (6b3) which is positioned in the arc-shaped guide groove (6d1) and can move along the same, and the notch of the groove (2a) is in a flaring shape which can lead in or lead out the thumb wheel (6b 1).

6. The door lock according to claim 5, characterized in that a plurality of teeth I are arranged on the outer peripheral wall of one end face of the unlocking gear (6c), a rotatable handle thumb wheel (9) is further arranged in the lock box (1), a plurality of teeth II meshed with the teeth I are arranged on the handle thumb wheel (9), a stop block (6c2) is arranged at the edge of the other end face of the unlocking gear (6c), and when the square bolt (2) is locked, one side wall of the thumb wheel (6b1) is abutted against one side wall of the stop block (6c 2).

7. A door lock according to claim 1, 2, 3, 4, 5 or 6, characterized in that the length of the force arm (5b) is 2-3 times the length of the force arm (5 a).

8. A door lock according to claim 7, characterized in that the angle between the force arm (5b) and the force arm (5a) is obtuse.

9. The door lock according to claim 8, characterized in that the elastic locking block assembly (4) comprises a locking elastic element (4b) and a rectangular locking block (4a), a boss (4a1) is arranged on one end face of the locking block (4a), a convex plate (3a1) is arranged on the latch bolt assembly (3) along the direction of retracting the lock box (1), the locking block (4a) always has the tendency of moving towards the latch bolt assembly (3) under the action of the locking elastic element (4b) to enable the convex plate (3a1) to abut against the boss (4a1), a matching groove (4a2) is arranged on one side of the other end of the locking block (4a), and the force applying arm (5a) is inserted into the matching groove (4a 2).

10. The door lock according to claim 9, characterized in that the locking block (4a) has a notch at one end with a boss (4a1), a stop block (10) with a shape matched with the notch is fixed in the lock box (1), and the convex plate (3a1) abuts against the boss (4a1) when the locking block (4a) moves to the stop block (10) and is clamped in the notch.