CN112576110B - Door lock capable of automatic locking - Google Patents

Abstract

A door lock capable of being automatically locked comprises a shell, a square bolt unit, an oblique bolt unit, a prying-resistant bolt unit and a linkage unit. The square tongue unit comprises a square tongue and a positioning handle. The latch bolt unit comprises a latch bolt and an actuating handle. The anti-prying tongue unit comprises an anti-prying tongue. The linkage unit comprises an unlocking sheet, a linkage plate and a baffle. The linkage plate is provided with a rear arm. When the door lock moves from a door opening state to a door locking state, the latch bolt and the anti-prying bolt touch the door frame and move backwards to enable the rear arm to swing upwards in a pivoted mode, when the latch bolt penetrates out of the shell again, the actuating handle pushes the rear arm of the linkage plate and pushes the linkage plate and the unlocking sheet to move forwards to enable the baffle to be separated from the positioning handle, the square bolt penetrates out of the shell to be automatically locked, and the use safety can be improved.

Description

Door lock capable of automatic locking

Technical Field

The present invention relates to a door lock, and more particularly, to an automatically lockable door lock.

Background

The existing door lock still needs to be locked manually through key or card induction after the door is closed, and is inconvenient for users who hold articles with two hands. If the door is only closed and the door is forgotten to be locked, the gangster may take advantage of the door, which may result in the loss of property in the room and even harm to personal safety, and thus the improvement is greatly needed.

Disclosure of Invention

The invention aims to provide an automatically lockable door lock capable of improving use safety.

The invention discloses an automatic-locking door lock which is suitable for being arranged on a door plate, wherein the door plate is rotatably pivoted on a door frame, and the door lock comprises a shell, a square bolt unit, an oblique bolt unit, a prying-resistant bolt unit and a linkage unit. The shell is around defining out the accommodation space to including preceding face and the back face that sets up along the fore-and-aft direction interval. The square tongue unit can be arranged on the shell in a spring-pushing mode, and comprises a square tongue, a positioning handle and a square tongue elastic piece, wherein the square tongue can penetrate through the front plate surface in the front-back direction, the positioning handle extends backwards from the square tongue, and the square tongue elastic piece constantly pushes the positioning handle to drive the square tongue to move forwards and protrude out of the front plate surface. The latch bolt unit can be arranged on the shell in a spring-pushing mode, the latch bolt unit comprises a latch bolt capable of penetrating the front plate surface along the front-back direction, an actuating handle extending backwards from the latch bolt, and a latch bolt elastic piece capable of being arranged on the actuating handle in a compression mode, the actuating handle is provided with a limiting piece located at the rear end, and when the latch bolt elastic piece is compressed, potential energy capable of constantly pushing the latch bolt to move forwards can be generated. The anti-prying tongue unit can be elastically pushed to be arranged on the shell and used for being stopped on the door frame, and comprises an anti-prying tongue, a stopping seat and an anti-prying tongue elastic piece, wherein the anti-prying tongue can penetrate through the front plate surface along the front-back direction, the stopping seat extends backwards from the anti-prying tongue, and the anti-prying tongue elastic piece is used for elastically pushing the anti-prying tongue. The linkage unit is movably connected with the square tongue unit and the prying-resistant tongue unit and is used for being jointed with the limiting part of the oblique tongue unit, the linkage unit comprises an unlocking sheet which is arranged on the shell in a sliding manner along the front-back direction, a reset elastic piece which is used for enabling the unlocking sheet to move backwards constantly, a linkage plate which is arranged on the unlocking sheet in a pivoting manner and is used for abutting against the stopping seat, a positioning elastic piece which is used for elastically pushing the linkage plate, and a baffle which is arranged on the shell in a pivoting manner and is used for being jointed with the unlocking sheet and detachably hooking and pulling the baffle on the positioning handle, the linkage plate is provided with a front arm which extends towards the direction of the front plate surface and is used for abutting against the stopping seat, and a rear arm which extends towards the direction of the rear plate surface, the positioning elastic piece is provided with potential energy which enables the rear arm of the linkage plate to incline upwards constantly, and the baffle is provided with a clamping hook which is used for hooking and pulling the positioning handle, the elastic restoring force is accumulated by the hook pulling on the positioning handle and compressing the square tongue elastic piece. The door lock can be switched between a door opening state and a door locking state. When the door is opened, the latch bolt and the anti-prying bolt penetrate out of the front plate surface, and the square bolt is retracted into the front plate surface. When the door is locked, the square bolt and the oblique bolt penetrate through the front plate surface, the anti-prying bolt is stopped on the door frame, when the door lock moves from the door opening state to the door locking state, the latch bolt touches the door frame and moves backwards together with the actuating handle to compress the latch bolt elastic piece, the anti-prying tongue touches the door frame and moves backwards together with the stop seat to compress the anti-prying tongue elastic piece, so that the front arm of the linkage plate swings downwards in a pivot way, and the rear arm is pivoted upwards, when the latch bolt extends out of the front plate surface again, the limiting piece pushes against the rear arm of the linkage plate and pushes the linkage plate to drive the unlocking sheet to move forwards simultaneously, the baffle plate swings downwards to the hook to be separated from the positioning handle, and the square tongue elastic piece releases the elastic restoring force to push the square tongue to penetrate out of the front plate surface to be automatically locked.

According to the door lock capable of being automatically locked, the stop seat of the prying-proof tongue unit is provided with the push block, and the front arm of the linkage plate is provided with the inclined surface which faces the push block and is used for abutting against the push block.

The invention relates to an automatic-locking door lock, wherein the anti-prying tongue unit also comprises a positioning piece fixed on the shell, the stopping seat is arranged on the positioning piece in a sliding manner, the anti-prying tongue elastic piece can be arranged between the stopping seat and the positioning piece in a compressed manner, and when the anti-prying tongue elastic piece is compressed, potential energy for constantly pushing the anti-prying tongue to move forwards is generated.

In the door lock capable of automatically locking, the unlocking sheet is provided with a convex part which is formed on the top side and is abutted against the baffle plate, the baffle plate is also provided with a clamping groove which is formed on the bottom side and is used for being jointed with the convex part, and in the process that the door lock is moved from the door opening state to the door locking state, the unlocking sheet moves forwards until the convex part slides into and is jointed with the clamping groove of the baffle plate so as to interlock the clamping hook of the baffle plate to be separated from the positioning handle.

The invention relates to an automatic locking door lock, which is also suitable for inserting and unlocking a key, and also comprises a lock core unit arranged on a shell, wherein the lock core unit comprises a lock core for inserting the key and rotating along with the key, a push sheet capable of rotating along with the lock core, a square tongue poking piece rotatably arranged on the shell and jointed with a positioning handle, and a latch tongue poking piece which is pivotally arranged on the shell and can be intermittently jointed with the push sheet and used for linking the latch tongue unit to move backwards, the latch tongue poking piece swings towards a vertical state constantly and is provided with an upper arm and a lower arm which are arranged in opposite directions, the linking plate is also provided with an extension arm which extends upwards from a rear arm and is used for jointing the positioning handle, the positioning handle is provided with a stop block which is positioned at the rear end and used for abutting against the lower arm, and the lock core and the push sheet are driven by the key to rotate and push the square tongue poking piece to rotate so as to drive the positioning handle and the square tongue poking piece to rotate The latch moves backwards, the stop block is separated from the latch pulling piece to enable the lower arm to pivot and swing to push against the limiting piece, the positioning handle simultaneously drives the extension arm to move backwards to enable the rear arm to pivot downwards to separate from the limiting piece, the reset elastic piece drives the linkage plate and the unlocking piece to move backwards, the baffle is pivoted upwards to link the hook to be pulled on the positioning handle, the key is continuously rotated to drive the pushing piece to rotate and pull the latch pulling piece to rotate, the lower arm pushes the limiting piece to link the latch to retract backwards to push the door panel, and the door lock is enabled to reach the door opening state.

According to the door lock capable of being automatically locked, the positioning handle of the square bolt unit is also provided with a groove for the extension arm of the linkage plate to extend into.

In the automatically lockable door lock according to the present invention, the physical center of gravity of the latch toggle member is located on the lower arm and can swing constantly toward the standing state.

The invention also comprises an electronic lock unit which can link the square bolt unit and the oblique bolt unit, and a handle unit which is used for being jointed with the electronic lock unit and can rotate, wherein the electronic lock unit comprises a shifting plate which can be pivotally connected with the square bolt unit and the oblique bolt unit and is used for driving the positioning handle and the actuating handle to move backwards, and a driving device which is used for driving the shifting plate.

The automatic locking door lock of the invention is characterized in that the shifting plate is provided with a pivoting end pivoted to the shell, a pulling end opposite to the pivoting end and used for abutting against the positioning handle, and a pushing and abutting section which is positioned between the pivoting end and the pulling end and used for abutting against a limiting piece of the actuating handle, and the positioning handle is provided with a convex block positioned at the rear end and used for abutting against the pulling end.

The door lock capable of being automatically locked further comprises a control unit which is suitable for being in communication connection with a mobile device and is electrically connected with the driving device, and the control unit is used for driving the driving device.

The invention has the beneficial effects that: the inclined tongue and the prying-resistant tongue touch the door frame to move backwards to enable the rear arm to swing upwards in a pivoted mode, when the inclined tongue penetrates out of the front plate surface again, the limiting part pushes the rear arm of the linkage plate and pushes the linkage plate and the unlocking sheet to move forwards to enable the clamping hook of the baffle to be separated from the positioning handle, the square tongue can penetrate out of the front plate surface through the elastic restoring force and is automatically locked, and the use safety can be improved.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a front view of an embodiment of the self-locking door lock of the present invention adapted for mounting on a door panel pivotally attached to a doorframe;

FIG. 2 is an exploded perspective view of the embodiment;

FIG. 3 is a fragmentary perspective view illustrating the connection of a dead bolt unit, a latch bolt unit, a prying-resistant bolt unit and a linkage unit of the embodiment;

FIG. 4 is a fragmentary perspective view of the embodiment from another angle;

FIG. 5 is a fragmentary front view illustrating the embodiment in an open door condition;

FIG. 6 is a schematic diagram illustrating the operation of the embodiment when the door is opened and the embodiment is switched to a door locking state;

FIG. 7 is a schematic diagram illustrating the operation of the embodiment when the door is opened and the door is locked;

FIG. 8 is a schematic diagram illustrating the operation of the embodiment when the door is opened and the door is locked;

fig. 9 is a fragmentary perspective view illustrating a connection relationship of an electronic lock unit and a control unit of the embodiment;

fig. 10 is a schematic view of an electronic unlocking operation using the electronic lock unit;

fig. 11 is a schematic diagram of an electronic unlocking operation using the electronic lock unit;

fig. 12 is a schematic view of an electronic unlocking operation using the electronic lock unit;

fig. 13 is a schematic view of an electronic unlocking operation using the electronic lock unit;

fig. 14 is a fragmentary perspective view illustrating a connection relationship of a key cylinder unit, the latch unit, the prying prevention latch unit and the interlocking unit according to the embodiment;

FIG. 15 is a schematic view of the mechanical unlocking action of the door using the cylinder unit;

FIG. 16 is a schematic view of the mechanical unlocking action of the door using the cylinder unit;

FIG. 17 is a schematic view of the mechanical unlocking action of the door using the cylinder unit;

FIG. 18 is a schematic view of the mechanical unlocking action of the door using the cylinder unit; and

fig. 19 is a schematic view showing an operation of mechanically unlocking the door by the key cylinder unit.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, the front-back direction X, the inside-outside direction Y, and the up-down direction Z are referred to based on the orientation shown in fig. 2, and the front-back direction X, the inside-outside direction Y, and the up-down direction Z are substantially perpendicular to each other.

Referring to fig. 1 and 2, the embodiment of the self-locking door lock of the present invention is adapted to be installed on a door panel 100, wherein the door panel 100 is rotatably pivoted to a door frame 200. The present embodiment comprises a housing 1, a square bolt unit 2, a latch bolt unit 3, a prying-proof bolt unit 4, a linkage unit 5, an electronic lock unit 6, a handle unit 7, a control unit 8, and a lock cylinder unit 9. In the present embodiment, a door lock having an electronic lock and a mechanical lock is used as an illustration, but in other variations, the present embodiment can also be only an electronic lock or a mechanical lock, but not limited thereto.

Referring to fig. 2 to 5, the housing 1 has a main body 11 and a front plate 12 mounted on the main body 11 along the front-back direction X, and an accommodating space 13 is defined by the main body 11 and the front plate 12. The main body 11 has a rear plate 111, and the front plate 12 has a front plate 121 spaced apart from the rear plate 111 in the front-rear direction X. The front plate 121 has a plurality of slots 122 extending therethrough.

The latch unit 2 is disposed in the housing 1 in a resiliently-pushing manner, and includes a latch 21 passing through one of the slots 122 of the front plate 121 along the front-back direction X, a positioning handle 22 extending backward from the latch 21, a latch shaft 23 fixed to the rear plate 111 and extending forward and slidably receiving the positioning handle 22, and a latch elastic member 24 located inside the positioning handle 22 and compressively receiving the latch shaft 23 and the positioning handle 22. The latch tongue elastic member 24 is a compression spring and constantly pushes the positioning handle 22 to link the latch tongue 21 to move forward and protrude out of the front plate surface 121.

The latch unit 3 is disposed in the housing 1 so as to be resiliently pushed, and is lower than the latch unit 2 in the up-down direction Z. The latch tongue unit 3 includes a latch tongue 31 that can be inserted into another slot 122 of the front plate surface 121 along the front-back direction X, an operating handle 32 that is fixed to the latch tongue 31 and extends backward from the latch tongue 31, and a latch tongue elastic member 33 that can be compressively fitted over the operating handle 32 and has one end pushing against the latch tongue 31 and the other end pushing against the housing 1. The actuating handle 32 has a rectangular block-shaped stopper 321 at the rear end. When the latch tongue elastic member 33 is compressed, a potential energy constantly pushing the latch tongue 31 to move forward together with the operation handle 32 is generated.

The anti-prying tongue unit 4 is disposed on the housing 1 in a spring-pushing manner and is used for being stopped at the door frame 200. The prying-resistant tongue unit 4 is lower than the latch tongue unit 3 in the up-down direction Z, and includes a prying-resistant tongue 41 capable of penetrating through another slot 122 of the front plate surface 121 in the front-back direction X, a stopper 42 extending backward from the prying-resistant tongue 41, a positioning member 43 fixed to the housing 1 and provided for the stopper 42 to slidably set, and a prying-resistant tongue elastic member 44 compressively disposed between the stopper 42 and the positioning member 43. The stopper seat 42 has a push block 421 extending in the inward-outward direction Y. When the anti-prying tongue elastic member 44 is compressed, a potential energy constantly pushing the anti-prying tongue 41 forward is generated. The anti-prying tongue elastic member 44 is a compression spring, and one end of the anti-prying tongue elastic member abuts against a bottom plate 431 of the positioning member 43, and the other end of the anti-prying tongue elastic member is accommodated in the stopping seat 42 and abuts against the stopping seat 42.

In the present embodiment, the positioning element 43 is a shaft, but in other variations, the positioning element 43 may be a seat body having a guide rail or a guiding groove, or other equivalent elements that can make the stopping seat 42 slidably disposed in the front-back direction X and against which one end of the anti-prying tongue elastic element 44 abuts.

The linkage unit 5 is movably connected to the square tongue unit 2 and the prying-resistant tongue unit 4 and is used for being engaged with the limiting member 321 of the latch tongue unit 3. The linkage unit 5 includes an unlocking plate 51 slidably disposed on the housing 1 along the front-back direction X, a return elastic member 52 having two ends respectively hooked on the rear plate 111 and the unlocking plate 51, a linkage plate 53 pivotally disposed on the unlocking plate 51 and used for abutting against the push block 421 of the stopping seat 42, a positioning elastic member 54 for elastically pushing the linkage plate 53, and a blocking plate 55 pivotally disposed on the housing 1 and engaged with the unlocking plate 51 and detachably hooked on the positioning handle 22. The unlocking piece 51 has a protrusion 511 formed on the top side and abutting against the baffle 55, and a long guide groove 512 located at the front end lower than the protrusion 511 and slidably engaged with a pivot 14 of the housing 1. The return elastic member 52 has potential energy constantly moving the unlocking piece 51 backward. The linkage plate 53 has a pivot point 531 pivoted to the unlocking plate 51, a front arm 532 extending from the pivot point 531 downward and bending forward, and a rear arm 533 extending from the pivot point 531 toward the rear plate 111, wherein the front arm 532 has an inclined surface 534 facing the push block 421 and for abutting against the push block 421. The positioning elastic member 54 is a torsion spring, one of the support arms elastically abuts against the bottom end of the rear arm 533 of the linkage plate 53, and the other support arm abuts against the pivot rod 14 and has a potential energy that constantly pushes the rear arm 533 of the linkage plate 53 to incline upward, and the positioning elastic member 54 elastically abuts against the linkage plate 53, and the inclined surface 534 pushes against the push block 421, so that the linkage plate 53 assumes a tilted state that is balanced front and back. The blocking plate 55 is located above the unlocking piece 51 and has a hook 551 for hooking to the positioning handle 22 and a catch 552 formed on the bottom side for engaging with the protrusion 511, and the square tongue elastic member 24 is compressed to accumulate an elastic restoring force by hooking to the positioning handle 22 through the hook 551.

Referring to fig. 5 to 8, the present embodiment can be switched between a door opening state (as shown in fig. 5) and a door locking state (as shown in fig. 8), as shown in fig. 5, when the door opening state is performed, the latch 31 and the anti-picking latch 41 respectively penetrate through the respective slots 122 of the front plate surface 121, and the latch 21 is pulled by the hook 551 of the baffle 55 to be retracted into the front plate surface 121. As shown in fig. 8, in the door locking state, the door panel 100 is close to the door frame 200, the square tongue 21 and the latch bolt 31 penetrate through the respective slots 122 of the front panel surface 121, and the anti-prying tongue 41 is stopped by the front side of the door frame 200, so that the elastic member 44 of the anti-prying tongue is compressed to generate the potential energy.

In the present embodiment, during the movement of pushing the door panel 100 to the door frame 200 to close the door in the open state, as shown in fig. 6, the latch 31 contacts the door frame 200 and moves backward together with the operating handle 32 to compress the latch elastic member 33. As shown in fig. 7, the anti-prying tongue 41 contacts the door frame 200 and moves backward together with the stopper 42 to compress the anti-prying tongue elastic member 44, so that the push block 421 of the stopper 42 is separated from the inclined surface 534 of the front arm 532, and the positioning elastic member 54 elastically pushes the rear arm 533 of the linking plate 53 upward and pivots the front arm 532 of the linking plate 53 downward, so that the linking plate 53 is changed from a tilted state to a horizontal state. As shown in fig. 8, when the door panel 100 is completely closed to the door frame 200, the latch 31 is not abutted by the door frame, and therefore, the potential energy of the latch elastic member 33 pushes the latch 31 and drives the actuating handle 32 to move forward together, so that the latch 31 protrudes out of the open slot 122 of the front panel 121 again, at this time, the linking plate 53 has changed to a higher horizontal state of the rear arm 533, when the actuating handle 32 moves forward, the limiting member 321 pushes the rear arm 533 of the linking plate 53 and pushes the linking plate 53 and the unlocking plate 51 to move forward, that is, the long guide groove 512 of the unlocking plate 51 will move relative to the pivot rod 14, the unlocking plate 51 moves forward until the protruding portion 511 slides into and engages with the locking groove 552 of the blocking plate 55, so that the blocking plate 55 swings freely downward to the locking hook 551 to disengage from the positioning handle 22, the latch elastic member 24 releases the elastic restoring force to push the latch 21 to pass through the slot 122 of the front panel 121 for automatic locking, so that in practical use, a user only needs to push the door panel 100 against the door frame 200 by using his body, and the door lock of the present invention can be automatically locked without using both hands.

Referring to fig. 9 to 13, next, the electronic unlocking method of the present embodiment will be described in detail. This embodiment can be unlocked inductively by means of a card (not shown) provided with an inductive tag storing an identification data.

The electronic lock unit 6 can link the square bolt unit 2 and the oblique bolt unit 3, and the electronic lock unit 6 comprises a dial plate 61 and a driving device 62. The shifting plate 61 is pivotally connected to the square tongue unit 2 and the oblique tongue unit 3, and is used for driving the positioning handle 22 and the actuating handle 32 to move backwards. The pulling plate 61 has a pivoting end 611 pivoted to the housing 1, a pulling end 612 opposite to the pivoting end 611 and configured to abut against the positioning handle 22, and an abutting section 613 located between the pivoting end 611 and the pulling end 612 and configured to abut against the limiting member 321 of the actuating handle 32. The positioning handle 22 also has a projection 221 at the rear end against which the pulling end 612 abuts. The driving device 62 is used for driving the dial plate 61, and has an outer operating part 621 used for driving the dial plate 61, an inner operating part 622 rotatably disposed in the outer operating part 621, a clutch pin 623 movably disposed through the outer operating part 621 and the inner operating part 622, and a driver 624 used for driving the clutch pin 623.

The handle unit 7 is used for being engaged with the electronic lock unit 6, and the handle unit 7 includes an outer handle 71 disposed on the outer side of the housing 1 along an inner-outer direction Y and used for carrying the inner operation member 622. When the clutch pin 623 is driven by the driver 624 and passes through the inner operating member 622 and the outer operating member 621, the outer handle 71 can link the inner operating member 622 and the outer operating member 621 to rotate together, so as to drive the dial plate 61 to rotate.

The control unit 8 is electrically connected to the electronic lock unit 6 and is configured to control the electronic lock unit 6. The control unit 8 includes a circuit board 81 electrically connected to the driver 624 and configured to drive the driver 624, and a battery 82 electrically connected to the circuit board 81 and configured to supply power.

As shown in fig. 10, in the present embodiment, when the user brings the card close to the door lock, the circuit board 81 senses the identification data of the card and drives the driver 624 to drive the clutch pin 623 to penetrate through the outer operating element 621 and the inner operating element 622. As shown in fig. 11, when the outer handle 71 is rotated, the outer operating element 621 drives the dial 61 to pull the positioning handle 22 and the operating handle 32 backward and compress the tongue elastic member 24 and the tongue elastic member 33, the limiting member 321 disengages from the rear arm 533 of the linking plate 53 to make the restoring elastic member 52 drive the unlocking sheet 51 and the linking plate 53 to move backward at the same time, the protrusion 511 of the unlocking sheet 51 slides out from the slot 552 of the blocking plate 55, the protrusion 511 of the unlocking sheet 51 abuts against the bottom edge of the blocking plate 55 to make the blocking plate 55 pivot upward to the hook 551 to be hooked on the positioning handle 22, so as to limit the tongue 21 behind the front plate surface 121. As shown in fig. 12, when the user still holds the outer handle 71 and pushes the door panel 100 open, the anti-prying tongue elastic member 44 releases the potential energy and pushes the stopper 42 and the anti-prying tongue 41 to move forward and out of the front panel surface 121 at the same time, and the pushing block 421 pushes the inclined surface 534 of the front arm 532 to restore the tilted state that the front arm 532 is tilted upward and the rear arm 533 is tilted downward. Finally, as shown in fig. 13, the external handle 71 is released, the toggle plate 61 is driven by the limiting member 321 due to the elastic restoring force of the latch elastic member 33 and returns without the limiting action of the external operating member 621, and the latch elastic member 33 pushes the latch 31 and the actuating handle 32 to move forward and penetrate through the slot 122 of the front plate surface 121, so that the present embodiment reaches the open state. Through foretell electron unblock mode, the user passes through the card response can unblock and open the door.

The present embodiment is also suitable for communication connection with a mobile device (not shown) such as a mobile phone, wherein the mobile device is used for outputting an unlocking signal, and when the circuit board 81 of the control unit 8 receives the unlocking signal, the driver 624 is driven to move the clutch pin 623, so that the outer handle 71 can be rotated to open the door.

Referring to fig. 14 to 19, when the battery 82 (see fig. 9) of the control unit 8 is short of power or forgets to carry the card and cannot be unlocked electronically by the card or the mobile device, the present embodiment further has a function of unlocking mechanically by using a key (not shown).

The key cylinder unit 9 is disposed in the housing 1, and includes a key cylinder 91 for inserting the key and capable of rotating with the key, a push piece 92 capable of rotating with the key cylinder 91, a latch toggle member 93 rotatably disposed in the housing 1 and engaged with the positioning handle 22, and a latch toggle member 94 pivotally disposed in the housing 1 and intermittently engaged with the push piece 92 for interlocking the latch unit 3 to move backward. The latch driver 94 has an upper arm 941 and a lower arm 942 disposed in opposite directions, and the physical center of gravity of the latch driver 94 is located on the lower arm 942 so as to be able to swing constantly toward the standing state. The linkage plate 53 further has an extension arm 535 extending upward from the rear arm 533 and adapted to engage with the positioning handle 22. The positioning handle 22 of the tongue unit 2 further has a groove 222 for the extension arm 535 of the linkage plate 53 to extend into, and a stopper 223 at the rear end for the lower arm 942 to abut against. The latch driver 94 can be prevented from swinging to the vertical state by the stop 223.

As shown in fig. 16, at the moment when the key is turned to drive the lock cylinder 91 and the push plate 92 to rotate, the push plate 92 pushes the tongue toggle member 93 to rotate and drive the positioning handle 22 and the tongue 21 to move backward, the stopper 223 is disengaged from the tongue toggle member 94, the tongue toggle member 94 swings toward the standing state without being blocked by the stopper 223, and the lower arm 942 swings backward to push against the stopper 321 to stop swinging, at this time, the upper arm 941 swings forward to be close to the push plate 92, when the positioning handle 22 moves backward, the extension arm 535 extends into the groove 222, as shown in fig. 17, the positioning handle 22 can drive the extension arm 535 to move backward and the rear arm 533 swings downward to disengage from the stopper 321, so that the reset elastic member 52 drives the linkage plate 53 and the unlocking plate 51 to move backward, the convex portion 511 of the unlocking piece 51 slides out from the slot 552 of the baffle 55, and the convex portion 511 of the unlocking piece 51 abuts against the bottom edge of the baffle 55, so that the baffle 55 swings upward and is linked with the hook 551 to hook and pull the positioning handle 22, and the square tongue 21 can be limited behind the front plate surface 121. As shown in fig. 18, the key is continuously rotated to drive the pushing piece 92 to rotate and to toggle the upper arm 941 of the latch toggle 94 to rotate, so that the lower arm 942 pushes the stopper 321 to link the latch 31 to retract backward and disengage from the door frame 200, and compresses the latch elastic member 33, at this time, the door panel 100 can be pushed open. As shown in fig. 19, when the anti-prying tongue 41 is separated from the door frame 200, the potential energy of the anti-prying tongue elastic member 44 pushes the stopping seat 42 and the anti-prying tongue 41 to move forward and penetrate through the slot 122 of the front panel surface 121, and then the key is rotated in a reverse direction to separate the pushing piece 92 from the latch toggle member 94, the latch elastic member 33 releases the potential energy, and the potential energy is greater than the acting force of the latch toggle member 94 swinging toward the vertical state, so that the limiting member 321 of the actuating handle 32 is not blocked by the latch toggle member 94 and can push the latch 31 and the actuating handle 32 to move forward and allow the latch 31 to penetrate through the slot 122 of the front panel surface 121, so that the door opening state is achieved in this embodiment. Through the mechanical unlocking mode, when the door cannot be unlocked in an electronic unlocking mode, a user can still unlock the door through the key.

The invention utilizes the element connection relationship of the linkage unit 5, the square bolt unit 2, the latch bolt unit 3 and the anti-prying bolt unit 4, and drives the square bolt 21 to penetrate out of the front plate surface 121 to automatically lock by the action of closing the door plate 100 to the door frame 200, thereby being convenient to use and improving the use safety. The embodiment also has two different modes of electronic unlocking and mechanical unlocking, can deal with various use occasions and conditions, and has wider application range. Therefore, the object of the present invention can be achieved.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.

Claims (9)

1. The utility model provides a lock that can lock automatically, is applicable to and sets up in the door plant, the door plant is rotationally pin joint in door frame, its characterized in that: the door lock includes:

the shell defines an accommodating space in a surrounding manner and comprises a front plate surface and a rear plate surface which are arranged at intervals in the front-rear direction;

the square tongue unit can be elastically arranged on the shell in a pushing manner, and comprises a square tongue, a positioning handle and a square tongue elastic piece, wherein the square tongue can penetrate through the front plate surface along the front-back direction, the positioning handle extends backwards from the square tongue, and the square tongue elastic piece constantly pushes the positioning handle to drive the square tongue to move forwards and protrude out of the front plate surface;

the oblique tongue unit can be arranged on the shell in an elastic pushing mode, the oblique tongue unit comprises an oblique tongue, an actuating handle and an oblique tongue elastic piece, the oblique tongue can penetrate through the front plate surface along the front-back direction, the actuating handle extends backwards from the oblique tongue, the oblique tongue elastic piece can be arranged on the actuating handle in a compression mode, the actuating handle is provided with a limiting piece located at the rear end, and when the oblique tongue elastic piece is compressed, potential energy capable of constantly pushing the oblique tongue to move forwards is generated;

the anti-prying tongue unit is elastically pushed to be arranged on the shell and used for stopping the door frame, and comprises an anti-prying tongue, a stopping seat and an anti-prying tongue elastic piece, wherein the anti-prying tongue can penetrate through the front plate surface along the front-back direction, the stopping seat extends backwards from the anti-prying tongue, and the anti-prying tongue elastic piece is used for elastically pushing the anti-prying tongue; and

a linkage unit movably connected to the square tongue unit and the prying-resistant tongue unit and configured to engage with the latch unit, the linkage unit including an unlocking plate slidably disposed on the housing along the front-rear direction, a return elastic member configured to constantly move the unlocking plate rearward, a linkage plate pivotally disposed on the unlocking plate and configured to abut against the stopper seat, a positioning elastic member configured to elastically push the linkage plate, and a blocking plate pivotally disposed on the housing and configured to engage with the unlocking plate and detachably hook-pull the positioning handle, the unlocking plate having a protrusion formed on a top side and abutting against the blocking plate, the linkage plate having a front arm extending in a direction toward the front plate surface and configured to abut against the stopper seat, and a rear arm extending in a direction toward the rear plate surface, the positioning elastic member having a potential energy to constantly tilt the rear arm of the linkage plate upward, the baffle plate is provided with a clamping groove which is formed at the bottom side and is used for being jointed with the convex part of the unlocking sheet, and a clamping hook which is used for being hooked and pulled on the positioning handle, and elastic restoring force is accumulated by the way that the clamping hook is hooked and pulled on the positioning handle and compresses the square tongue elastic piece,

the door lock can be switched between a door opening state and a door locking state, when the door is opened, the latch bolt and the anti-prying bolt penetrate out of the front plate surface and the square bolt is retracted into the front plate surface, when the door is locked, the square bolt and the latch bolt penetrate out of the front plate surface and the anti-prying bolt is blocked on the door frame, when the door lock moves from the door opening state to the door locking state, the latch bolt touches the door frame and moves backwards together with the actuating handle and compresses the latch bolt elastic member, the anti-prying bolt touches the door frame and moves backwards together with the blocking seat and compresses the anti-prying bolt elastic member, so that the front arm of the linkage plate pivots downwards and the rear arm pivots upwards, when the latch bolt protrudes out of the front plate again, the limiting member pushes against the rear arm of the linkage plate and pushes the linkage plate to drive the unlocking piece to move forwards simultaneously, the unlocking piece moves forwards until the convex part slides into and is jointed with the clamping groove of the baffle plate, so that the baffle plate swings downwards to the clamping hook to be separated from the positioning handle, and the square tongue elastic piece releases the elastic restoring force to push the square tongue to penetrate out of the front plate surface to be automatically locked.

2. An automatically lockable door lock according to claim 1, characterized in that: the stop seat of the prying-proof tongue unit is provided with a push block, and the front arm of the linkage plate is provided with an inclined surface which faces the push block and is used for abutting against the push block.

3. An automatically lockable door lock according to claim 1, characterized in that: the anti-prying tongue unit further comprises a positioning piece fixed on the shell, the stopping seat can be arranged on the positioning piece in a sliding mode, the anti-prying tongue elastic piece can be arranged between the stopping seat and the positioning piece in a compressed mode, and when the anti-prying tongue elastic piece is compressed, potential energy for constantly pushing the anti-prying tongue to move forwards can be generated.

4. An automatically lockable door lock according to claim 1, characterized in that: the door lock is also suitable for key insertion and unlocking, the door lock also comprises a lock core unit arranged on the shell, the lock core unit comprises a lock core for the key to insert and rotate along with the key, a push sheet capable of rotating along with the lock core, a square tongue toggle piece rotatably arranged on the shell and jointed with the positioning handle, and a latch tongue toggle piece which is pivotally arranged on the shell and can be intermittently jointed with the push sheet and used for linking the latch tongue unit to move backwards, the latch tongue toggle piece swings towards a vertical state constantly and is provided with an upper arm and a lower arm which are arranged in opposite directions, the linking plate is also provided with an extension arm which extends upwards from the rear arm and is used for jointing the positioning handle, the positioning handle is provided with a stop block which is positioned at the rear end and used for the lower arm to abut against, and the key drives the lock core and the push sheet to rotate and pushes the square tongue toggle piece to rotate so as to drive the positioning handle and the square tongue to move backwards, the stop block is separated from the latch bolt toggle piece to enable the lower arm to pivot and swing to push against the limiting piece, the positioning handle simultaneously drives the extension arm to move backwards to enable the rear arm to pivot downwards to separate from the limiting piece, the reset elastic piece drives the linkage plate and the unlocking piece to move backwards to enable the baffle plate to pivot upwards to link the hook to be pulled on the positioning handle, the key is continuously rotated to drive the push piece to rotate and toggle the latch bolt toggle piece to rotate, the lower arm pushes the limiting piece to link the latch bolt to retract backwards to push the door plate away, and the door lock is enabled to reach the door opening state.

5. An automatically lockable door lock according to claim 4, characterized in that: the positioning handle of the square tongue unit is also provided with a groove for the extension arm of the linkage plate to extend into.

6. An automatically lockable door lock according to claim 4, characterized in that: the physical gravity center of the latch stirring piece is positioned on the lower arm and can swing towards the vertical state constantly.

7. An automatically lockable door lock according to claim 1, characterized in that: the electronic lock unit comprises a shifting plate which is connected with the square bolt unit and the oblique bolt unit in a pivot swinging manner and used for driving the positioning handle and the actuating handle to move backwards, and a driving device used for driving the shifting plate.

8. An automatically lockable door lock according to claim 7, characterized in that: the shifting plate is provided with a pivoting end pivoted to the shell, a pulling end opposite to the pivoting end and used for abutting against the positioning handle, and a pushing and abutting section located between the pivoting end and the pulling end and used for abutting against a limiting part of the actuating handle, and the positioning handle is provided with a convex block located at the rear end and used for abutting against the pulling end.

9. An automatically lockable door lock according to claim 7, characterized in that: the control unit is suitable for being in communication connection with the mobile device and is electrically connected with the driving device and used for driving the driving device.

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