CN210622525U

CN210622525U - Door lock

Info

Publication number: CN210622525U
Application number: CN201920880499.8U
Authority: CN
Inventors: 胡利恒
Original assignee: Zhongshan Olang Metal Products Co ltd
Current assignee: Guangdong Oulang Security Technology Co.,Ltd.
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-05-26
Anticipated expiration: 2029-06-12

Abstract

The embodiment of the application provides a door lock, including the lock shell, the insurance tongue, insurance tongue toggle mechanism, spring bolt and spring bolt toggle mechanism, insurance tongue toggle mechanism includes that drive plate and insurance tongue toggle the subassembly, the insurance tongue toggles the subassembly and rotates and set up in the drain pan, and selective drive insurance tongue stretches out or withdraws to the drain pan, the drive plate slides and sets up in the drain pan and toggles the subassembly transmission cooperation with the insurance tongue, spring bolt toggle mechanism rotates and connects in the drain pan, and it is flexible to drive the spring bolt at the rotation in-process, be used for driving drive plate through actuating mechanism and slide and spring bolt toggle mechanism rotates. The lock bolt and the safety bolt can be unlocked simultaneously by arranging the lock bolt toggle mechanism and the safety bolt toggle mechanism.

Description

Door lock

Technical Field

The application relates to the technical field of locks, in particular to a door lock.

Background

At present, door locks are increasingly popularized in life, the lock tongue and the safety tongue of most door locks are arranged in a lock shell in a sliding mode, the transmission mechanism drives the lock tongue and the safety tongue to stretch out and draw back, when the door locks, the lock tongue generally extends out of the lock shell, the safety tongue shrinks in the lock shell, when the door closes, the lock tongue shrinks into the lock shell under the action of a door frame, when the door body is opposite to the door frame, the lock tongue extends into the lock hole of the door frame to be locked, after the door locks, a user can open the safety tongue to enable the safety tongue to extend into the lock hole of the door frame, and due to the structural limitation of the existing transmission mechanism, when the door locks, the lock tongue and the safety tongue cannot be opened simultaneously, so that the user.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present application is to provide a door lock for simplifying the structure of the door lock.

The embodiment of the application provides a door lock, including the lock shell, the insurance tongue, insurance tongue toggle mechanism, spring bolt and spring bolt toggle mechanism, the lock shell includes drain pan and curb plate, the curb plate encloses the edge of locating the drain pan and encloses into accepting the chamber, the curb plate set up with accept insurance tongue hole and the spring bolt hole of chamber intercommunication, the flexible setting of axis direction along insurance tongue hole of insurance tongue, insurance tongue toggle mechanism includes that driving plate and insurance tongue toggle the subassembly, the insurance tongue toggles the subassembly and rotates and connect in the drain pan, and selective drive insurance tongue stretches out or withdraws to the drain pan, the driving plate slides and sets up in the drain pan and stirs the subassembly transmission cooperation with the insurance tongue, the spring bolt is toggled the mechanism and is rotated and is connected in the drain pan, and it is flexible to drive the spring bolt at rotation in-process, actuating mechanism is used for.

Compared with the prior art, the door lock that this application provided, the driving plate slides and sets up in the drain pan and stir the subassembly transmission cooperation with the insurance tongue, and actuating mechanism slides through the drive driving plate and orders about the insurance tongue and stir the subassembly and drive the insurance tongue and stretch out and draw back, can realize through spring bolt toggle mechanism and insurance tongue toggle mechanism that the door lock opened the function of insurance tongue when unblanking simultaneously.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a door lock proposed in an embodiment of the present application in an assembled state;

fig. 2 is a schematic view of a disassembled structure of a door lock provided in the embodiment of the present application;

FIG. 3 is a schematic view of a driving plate according to a first embodiment of the present disclosure;

fig. 4 is a schematic diagram of a disassembled structure of a safety tongue, a safety tongue fixing portion and a safety tongue toggle assembly provided in the embodiment of the present application;

FIG. 5 is a schematic structural view of a door lock with a drive mechanism removed according to an embodiment of the present application;

FIG. 6 is a schematic view of a split structure of a latch bolt assembly according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a latch tongue according to an embodiment of the present application from a first viewing angle;

FIG. 8 is a schematic structural diagram of a latch tongue according to an embodiment of the present application at a second viewing angle;

FIG. 9 is a schematic structural view of a latch rod according to an embodiment of the present application;

FIG. 10 is a schematic illustration of a disassembled structure of a locking mechanism proposed in the embodiments of the present application;

fig. 11 is a schematic diagram illustrating a disassembled structure of a latch bolt assembly, a locking mechanism and a restoring mechanism according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Most of door locks generally drive a lock tongue and a safety tongue through a transmission mechanism, when the door lock is locked, the lock tongue and the safety tongue respectively extend into a lock hole of a door frame to be locked, and due to the structural limitation of the transmission mechanism, a user needs to respectively open the lock tongue and the safety tongue when unlocking, and in addition, the transmission between the lock tongue and the safety tongue is not facilitated. Therefore, the inventor proposes the door lock in the embodiment of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1, the present embodiment provides a door lock 100, which includes a lock case 110, a safety tongue 120, a safety tongue toggle mechanism 130, a bolt 140, a bolt toggle mechanism 150, and a driving mechanism 160, wherein the safety tongue 120 and the bolt 140 are slidably disposed in the lock case 110, the safety tongue toggle mechanism 130 and the bolt toggle mechanism 150 are both disposed in the lock case 110, and the driving mechanism 150 is in transmission fit with the safety tongue toggle mechanism 130 and the bolt toggle mechanism 150.

In this embodiment, the lock case 110 has an accommodating cavity 111, and the lock case 110 has a bolt hole 112 and a safety bolt hole 114 communicating with the accommodating cavity 111, wherein the bolt hole 112 is for the bolt to extend or rotate, and the safety bolt hole 114 is for the safety bolt 120 to extend or retract. Specifically, the lock case 110 includes a bottom case 113 and a cover plate (not shown) detachably mounted on the bottom case 113 for closing the receiving cavity 111, wherein the structure of the cover plate is matched with that of the bottom case 113.

In this embodiment, the bottom case 113 includes a bottom plate 1131 and a side plate 1132, wherein the side plate 1132 surrounds an edge of the bottom plate 1131 and forms the receiving cavity 111, it can be understood that the receiving cavity 111 is located in an area surrounded by the side plate 1132 and the bottom plate 1131. The side plate 1132 includes an outer surface and an inner surface, and the outer surface and the inner surface are away from each other, and it should be noted that the outer surface refers to a surface of the side plate 1132 located outside the accommodating cavity 111; the inner surface refers to a surface of the side plate 1132 located in the receiving cavity 111. The latch hole 112 and the safety latch hole 114 are disposed in the side plate 1132, and both penetrate through the outer surface and the inner surface, wherein the axis of the latch hole 112 and the axis of the safety latch hole 114 are substantially perpendicular to the outer surface, and the structural dimension of the latch hole 112 is adapted to the structure of the latch. The number of the bolt holes 112 may be 1, 2 or more, wherein a plurality means more than 2, and different bolt holes 112 may be used for different types of bolts to extend and retract.

Referring to fig. 2, in the present embodiment, the bottom case 113 is provided with assembly holes 1133, the number of the assembly holes 1133 is 3, wherein the 3 assembly holes 1133 are disposed at intervals on the bottom plate 1131 and penetrate through the bottom plate 1131, the assembly holes 1133 are used for assembling structures such as a door handle, a dial sleeve, a safety button, and the like, the dial sleeve is rotatably assembled in the assembly holes 1133, and the door handle is connected with the dial sleeve.

In the present embodiment, the safety tongue 120 is telescopically disposed along the axial direction (the X direction shown in fig. 1) of the safety tongue hole 114, and selectively extends or retracts the safety tongue hole 114, it can be understood that the telescopic direction of the safety tongue 120 is substantially parallel to the axial direction of the safety tongue hole 114.

Referring to fig. 2, in the present embodiment, the door lock 100 further includes a safety tongue fixing portion 121, the safety tongue fixing portion 121 is a substantially plate-shaped structure, wherein the safety tongue fixing portion 121 is disposed along an axial direction of the safety tongue hole 114 and connected to the safety tongue 120, and it can be understood that the safety tongue fixing portion 121 can drive the safety tongue 120 to extend out of the safety tongue hole 114 or retract into the receiving cavity 111 in the sliding process. In this embodiment, the safety tongue fixing portion 121 is slidably disposed on the bottom case 1131, the safety tongue fixing portion 121 is provided with a transmission groove 1211, the transmission groove 1211 is disposed at an end of the safety tongue fixing portion 121 away from the safety tongue 120, the transmission groove 1211 penetrates through a side surface of the safety tongue fixing portion 121, and the safety tongue fixing portion 121 can be in transmission fit with the safety tongue toggle mechanism 130 through the transmission groove 1211.

In some embodiments, the safety tongue fixing part 121 may also be provided with other structures, for example, a rod-shaped structure.

In some embodiments, the door lock 100 further includes an optional stroke switch (not shown), wherein the stroke switch may be disposed on the bottom case 1131, and the stroke switch may be configured to detect a sliding stroke of the safety tongue fixing portion 121, and further, a distance sensor or the like may be disposed.

The safety tongue toggle mechanism 130 is disposed in the accommodating cavity 111, wherein the safety tongue toggle mechanism 130 includes a transmission plate 131 and a safety tongue toggle assembly 135, the safety tongue toggle assembly 135 is rotatably connected to the bottom case 111 and selectively drives the safety tongue 120 to extend out of or retract into the bottom case 111, and the transmission plate 131 is slidably disposed on the bottom case 111 and is in transmission fit with the safety tongue toggle assembly 135. In this embodiment, the safety tongue toggle assembly 135 includes a toggle button 132 and a safety tongue toggle piece 133.

Specifically, in the present embodiment, the driving plate 131 is slidably disposed on the bottom case 111, and a sliding direction (a Y direction shown in fig. 2) of the driving plate 131 is substantially perpendicular to an axial direction of the safety tongue hole 114, the driving plate 131 is disposed on a side of the bottom case 111 away from the safety tongue 120, and the safety tongue fixing portion 121 faces the driving plate 131.

Referring to fig. 3, in the present embodiment, the driving plate 131 is provided with a protruding tooth 1311 engaged with the safety tongue moving plate 133, wherein the protruding tooth 1311 is disposed on a side of the driving plate 131 close to the safety tongue fixing portion 121, and the driving plate 131 is further provided with a guiding hole 1312, the guiding hole 1312 penetrates through the driving plate 131, wherein the guiding hole 1312 can be used for guiding the driving plate 131 during the sliding process.

Referring to fig. 2 and fig. 4, in the present embodiment, the safety tongue toggle piece 133 is rotatably disposed on the bottom case 111, the safety tongue toggle piece 133 includes a connecting end 1331 and a free end 1332, the connecting end 1331 is rotatably disposed on the bottom case 111, the connecting end 1331 is rotatably connected to the bottom case 111 through a rotating shaft, and the free end 1332 is provided with a slot 1333 engaged with the protruding tooth 1311. Specifically, the tongue catcher toggle piece 133 includes a plate body 1334 and a protrusion 1335, the connecting end 1331 and the free end 1332 are respectively disposed at two ends of the plate body 1334, the protrusion 1335 is connected to an edge of the plate body 1334 and is located between the free end 1332 and the connecting end 1331, and the slot 1333 is formed at a connection position of the protrusion 1335 and the plate body 1334. The teeth 1311 of the driving plate 131 face the tongue driver 133 and are fitted into the slots 1333.

Through setting up dogtooth 1311 and draw-in groove 1333 for the mode of accessible joint is connected between driving plate 131 and the insurance tongue piece 133, and driving plate 131 can promote the insurance tongue piece 133 and rotate along the direction of keeping away from driving plate 131 at the slip in-process, locate draw-in groove 1333 through with dogtooth 1311 card, can prevent that driving plate 131 from taking place to break away from with insurance tongue piece 133 at the slip in-process, and then guarantee the transmission cooperation between driving plate 131 and the insurance tongue piece 133. In addition, the slot 1333 is disposed at a connection position of the projection 1335 and the plate 1334, when the driving plate 131 pushes the safety tongue moving piece 133 to rotate to a certain angle, the protruding tooth 1311 can abut against the projection 1335, so as to prevent the protruding tooth 1311 from separating from the safety tongue moving piece 133 during the rotation of the safety tongue moving piece 133, and in addition, the pushing force of the driving plate 131 is favorably applied to the safety tongue moving piece 133, thereby increasing the steering force of the safety tongue moving piece 133.

Referring to fig. 2 and 4, in the present embodiment, the toggle button 132 is rotatably disposed on the bottom case 111 and selectively drives the safety tongue 120 to extend out of or retract into the safety tongue hole 114. Specifically, the toggle button 132 includes a rotating portion 1321 and a toggle portion 1322, the rotating portion 1321 is rotatably connected to the bottom housing 111, the rotating portion 1321 is rotatably assembled in one of the assembling holes 1133, and the rotating portion 1321 can rotate with an axis of the assembling hole 1133 as a rotation center. The toggle part 1322 is connected to the rotating part 1321, wherein the toggle part 1322 is located in the transmission slot 1211 and selectively drives the tongue securing part 121 to slide, and it can be understood that the toggle part 1322 abuts against the tongue securing part 121 and toggles the tongue securing part 121 to slide in the rotating process.

The toggle part 1322 is disposed in the transmission groove 1211 of the safety tongue fixing part 121, so that the toggle part 1322 extends into the safety tongue fixing part 121 for transmission fit, and in addition, the safety tongue fixing part 121 can ensure that the toggle part 1322 is always in transmission fit with the safety tongue fixing part 121 during sliding, thereby preventing the toggle part 1322 from sliding off the safety tongue fixing part 121.

In some embodiments, the door lock 100 further includes a safety button (not shown), which is disposed outside the receiving cavity 111, and is rotatably mounted in the mounting hole 1133 and connected to the rotating portion 1321, and when the safety button is rotated by a user, the safety button drives the toggle button 132 to rotate during the rotation process. For example, when the user rotates the safety button in the forward direction, the safety button drives the toggle button 132 to rotate counterclockwise, and the toggle button 132 toggles the safety tongue fixing portion 121 to slide toward the safety tongue hole 114 during the rotation process, so that the safety tongue fixing portion 121 drives the safety tongue 120 to extend out of the safety tongue hole 114 for locking; when the user rotates the safety button in the reverse direction, the safety button drives the toggle button 132 to rotate clockwise, and the toggle button 132 can toggle the safety tongue fixing portion 121 to slide along the safety tongue hole 114 during the rotation process, so that the safety tongue 120 retracts into the safety tongue hole 114 to unlock.

Through being connected the safety button with toggle button 132, user's accessible manual mode control safety tongue 120 stretches out and draws back, if safety tongue toggle mechanism 130 can't normally use, user's accessible safety button realizes unblanking fast, can realize fleeing fast under emergency.

In this embodiment, the safety tongue toggle mechanism 130 further comprises a connecting rod 134, wherein one end of the connecting rod 134 is rotatably connected to the free end 1332, and the other end is connected to the toggle portion 1322, wherein the connecting rod 134 can be rotatably connected to the toggle portion 1322. In addition, the connecting rod 134 may be disposed between the toggle portion 1322 and the bottom housing 111 to prevent interference between the connecting rod 134 and the safety tongue fixing portion 121.

The linkage between the toggle button 132 and the safety tongue toggle piece 133 can be realized through the connecting rod 134, when the transmission plate 131 pushes the safety tongue toggle piece 133 to rotate, the safety tongue toggle piece 133 can drive the toggle button 132 to rotate through the connecting rod 134 in the rotating process, wherein the toggle button 132 can toggle the safety tongue 120 to slide towards the accommodating cavity 111 in the rotating process so as to realize the retraction of the safety tongue 120.

Furthermore, in some embodiments, the connecting rod 134 may not be provided, wherein the free end 1332 of the safety tongue toggle piece 133 may be directly connected with the toggle portion 1322 of the toggle button 132.

In some embodiments, the safety tongue toggle mechanism 130 further comprises an elastic member (not shown) for restoring the toggle button 132, the elastic member may be made of a material having an elastic function, such as rubber or a spring, and one end of the elastic member may be connected to the toggle portion 1322 and the other end thereof is connected to the lock housing 110. When the toggle part 1322 is rotated by a force to stretch the elastic member, the elastic member can be deformed to a certain extent, and when the external force acting on the toggle part 1322 disappears, the toggle part 1322 rotates to the initial position under the restoring force of the elastic member. The toggle button 132 can be rotationally reset by providing an elastic member.

Referring to fig. 1 and 3 again, in the present embodiment, the door lock 100 further includes a guiding mechanism 136 for guiding the driving plate 131, wherein the guiding mechanism 136 includes a guiding post (not shown) connected to the bottom case 111, and the guiding post is movably disposed through the guiding hole 1312 of the driving plate 131. During the sliding process of the driving plate 131, the guiding and limiting effects can be achieved by the cooperation between the guiding posts and the guiding holes 1312. In addition, the number of the guide posts can be adjusted according to actual requirements, and is not limited herein.

In addition, in some embodiments, the driving plate 131 may not be provided with the guide holes 1312, for example, guide posts may be respectively disposed at both sides of the driving plate 131 in the sliding direction, wherein the driving plate 131 may be slidably disposed between the guide posts, and both ends of the driving plate 131 respectively contact with the guide posts during the sliding. In addition, in some embodiments, the bottom case 111 may also be provided with a guide groove, and the driving plate 131 may be slidably disposed in the guide groove to form a guide.

Referring to fig. 1 and 2, the latch 140 is assembled in the latch hole 112 and can extend out of or retract into the latch hole 112 along the axial direction of the latch hole 112. Specifically, in the present embodiment, the latch tongue 140 and the safety tongue 120 are arranged side by side, wherein the extending and retracting direction of the latch tongue 140 is substantially parallel to the extending and retracting direction of the safety tongue 120.

In this embodiment, the door lock 100 further includes a bolt fixing portion 141, wherein the bolt fixing portion 141 is slidably disposed on the bottom case 113 along an axial direction of the bolt hole 112, and the bolt 140 is connected to the bolt fixing portion 141, it can be understood that the bolt fixing portion 141 can selectively drive the bolt 140 to extend out of the bolt hole 112 or retract into the receiving cavity 111 during the sliding process. In addition, in the embodiment, the latch bolt fixing portion 141 is provided with a guiding inclined hole 1411, wherein the guiding inclined hole 1411 is used for being in transmission fit with the latch bolt toggle mechanism 150.

Referring to fig. 1 and 2, in the present embodiment, the latch striking mechanism 150 is rotatably connected to the bottom case 111 and selectively drives the latch 120 to retract during the rotation. Specifically, the deadbolt toggle mechanism 150 includes a rotary plate 151 and a rotary plate gear 152. The rotary piece 151 is rotatably connected to the bottom case 111 and is in transmission fit with the tongue fixing portion 141, and the rotary piece 151 is in transmission fit with the driving mechanism 160, so that the driving mechanism 160 can drive the rotary piece 151 to rotate. Specifically, a sliding column (not shown in the figure) is disposed on a surface of the rotating piece 151 facing the bottom case 111, the sliding column is slidably disposed in the guiding inclined hole 1411, the rotating piece 151 drives the sliding column to slide in the guiding inclined hole 1411 during a rotation process, and the sliding column abuts against the lock tongue fixing portion 141 and can drive the lock tongue fixing portion 1411 to slide during a sliding process. When the rotating piece 151 rotates counterclockwise, the sliding column drives the bolt fixing portion 141 to slide in a direction away from the bolt hole 112, so that the bolt fixing portion 141 drives the bolt 140 to retract into the receiving cavity 111; when the rotating piece 151 rotates clockwise, the sliding column pushes the bolt fixing portion 141 to slide in a direction away from the bolt hole 112, so that the bolt fixing portion 141 drives the bolt 140 to extend out of the bolt hole 112.

In this embodiment, the rotating plate 151 is provided with the latch 1511, and an engaging gap 1512 is formed between adjacent latches 1511, where the engaging gap 1512 can be used for cooperating with a transmission mechanism such as the driving mechanism 160. The rotation plate gear 152 is rotatably connected to the bottom case 111, the rotation axis of the rotation plate gear 152 is substantially parallel to and coincident with the rotation axis of the rotation plate 151, and the rotation plate gear 152 is in transmission connection with the rotation plate 151. The rotating plate gear 152 can be used for carrying out transmission fit with the shifting sleeve, can drive the rotating plate gear 152 to rotate when the user rotates the door handle, drives the rotating plate 151 to rotate at the rotation in-process when the rotating plate gear 152, and the rotating plate 151 drives the bolt fixing part 141 to slide at the rotation in-process simultaneously to make the bolt fixing part 141 drive the bolt 140 to stretch out and draw back at the slip in-process.

Referring to fig. 1 and 2, in the present embodiment, the driving mechanism 160 is configured to drive the driving plate 131 to slide and the latch striking mechanism 150 to rotate, and specifically, the driving mechanism 160 includes a driving portion 161, a gear mechanism 162, a latch striking sleeve 163 and a latch striking sleeve 164, where the latch striking sleeve 163 is rotatably connected to the bottom shell 111 and is in driving fit with the gear mechanism 162. Specifically, the tongue shift sleeve 163 is rotatably mounted in one of the mounting holes 1133, and can rotate around the axis of the mounting hole 1133, and the tongue shift sleeve 163 is provided with a shift flange 1631, wherein the shift flange 1631 is disposed on a surface of the tongue shift sleeve 163 away from the bottom shell 111. In addition, the safety tongue shift sleeve 163 is in transmission fit with the transmission plate 131, and can drive the transmission plate 131 to slide during rotation.

In this embodiment, the gear mechanism 162 includes a gear box 1621 and a toggle gear 1622, wherein the toggle gear 1622 is rotatably connected to the bottom case 111, a plurality of gear sets are disposed inside the gear box 1621, and the plurality of gear sets are engaged with each other in a transmission manner to realize acceleration or deceleration. Specifically, the inner wall of dialling cover gear 1622 is provided with the block groove (not shown in the figure), and in this embodiment, it can rotate to dial cover gear 1622 and fold to the cover 163 is dialled to the insurance tongue, and dials the cooperation of flange 1631 and accept in the draw-in groove, and the draw-in groove is greater than to dial flange 1631 in ascending length in the circumference in circumference to thereby it dials flange 1631 and draw-in groove butt and drives the insurance tongue and dial the cover 1622 and rotate to make to dial cover gear 1622 rotate after predetermined angle. Wherein, the shifting sleeve gear 1622 is engaged with the gear box 1621, and the gear box 1621 can be used for realizing the functions of acceleration or deceleration and the like of the shifting sleeve gear 1622. Wherein the gear box 1621 is in driving fit with the driving part 161, which may be a motor or the like.

In this embodiment, latch toggle 164 is rotatably coupled to base 111 and is in driving engagement with gear mechanism 162. Specifically, the bolt toggle 164 is connected to the toggle gear 1622, wherein the bolt toggle 164 is provided with a bolt toggle flange 1641 along the radial direction thereof, and the bolt toggle flange 1641 is accommodated in the clamping groove in a matching manner, so that the bolt toggle flange 1641 abuts against the clamping groove to drive the bolt toggle 164 to rotate after the toggle gear 1622 rotates to a predetermined angle. The bolt toggle sleeve 164 is provided with a toggle lever 1642, the toggle lever 1642 is located in the engaging gap 1512 and is in transmission fit with the rotary piece 151, and the bolt toggle sleeve 164 can drive the rotary piece 151 to rotate in the rotating process.

The driving portion 161 drives the sleeve gear 1622 to rotate so as to drive the bolt sleeve 164 and the safety bolt sleeve 163 to rotate. For example: when the bolt shifting sleeve 163 rotates clockwise, the bolt shifting sleeve 163 can shift the rotating piece 151 to rotate counterclockwise in the rotating process, and the rotating piece 151 can drive the bolt fixing portion 141 to slide towards the direction far away from the bolt hole 112 in the rotating process, so that the bolt 140 is retracted into the accommodating cavity 111.

Additionally, in some embodiments, deadbolt thumb sleeve 164 and safety strike thumb sleeve 163 may also be geared with a key-actuated gear train.

Referring to fig. 5, in the present embodiment, the driving mechanism 160 further includes a pulling plate 165 and a transmission dial plate 166, wherein the transmission dial plate 166 includes a first dial end 1661 and a second dial end 1662 that are connected to each other, a joint of the first dial end 1661 and the second dial end 1662 is rotatably disposed on the bottom shell 111, and the first dial end 1661 is hinged to the transmission plate 131. The driving plate 166 can drive the driving plate 131 to slide during the driving process.

In this embodiment, the pulling plate 165 is slidably disposed on the bottom case 111, wherein the sliding direction of the pulling plate 165 is substantially the same as the sliding direction of the driving plate 131. The safety tongue shifting sleeve 163 is in transmission fit with the pull plate 165, when the safety tongue shifting sleeve 163 abuts against the pull plate 165 and pushes the pull plate 165 to slide in the rotating process, and the pull plate 165 can abut against the second shifting end 1662 and can push the transmission shifting piece 166 to rotate in the sliding process, when the transmission shifting piece 166 pushes the transmission plate 131 to slide in the rotating process, the transmission plate 131 is enabled to transmit through the safety tongue shifting piece 133 and the connecting rod 134, and the connecting rod 134 can drive the shifting button 132 to rotate and shift the safety tongue 120 to retract into the accommodating cavity 111.

Referring to fig. 2, in the embodiment, the driving mechanism 160 further includes a lock tongue shift fork 167 and a safety lock tongue shift fork 168 connected to the door handle, wherein the lock tongue shift fork 167 is rotatably connected to the bottom case 111, specifically, the lock tongue shift fork 167 is rotatably disposed in one of the assembly holes 1133 and can rotate with an axial direction of the assembly hole 1133 as a rotation center, and the lock tongue shift fork 167 is in transmission fit with the lock tongue shift mechanism 150 and can drive the lock tongue shift mechanism 150 to rotate in the rotation process. The bolt shift fork 167 is in transmission fit with the rotary plate gear 152, specifically, the bolt shift fork 167 is meshed with the rotary plate gear 152, and the bolt shift fork 167 can drive the rotary plate gear 152 to rotate in the rotating process. The safety tongue shift fork 168 is connected to the lock tongue shift fork 167 and is in transmission fit with the transmission plate 131, the safety tongue shift fork 168 abuts against the transmission plate 131 in the rotation process and pushes the transmission plate 131 to slide, so that the transmission plate 131 is driven by the lock tongue shift piece 133 and the connecting rod 134, and the connecting rod 134 can drive the shift knob 132 to rotate and shift the safety tongue 120 to retract into the accommodating cavity 111. In addition, the spring bolt shift fork 167 is provided with the square shaft hole, and the structure of the link of door handle and the structural dimension looks adaptation in square shaft hole, the link of door handle can assemble in the square shaft hole in order to realize that the door handle is connected with the transmission of spring bolt shift fork 167.

In addition, in this embodiment, the safety tongue shifting fork 168 is connected to the lock tongue shifting fork 167, the lock tongue shifting fork 167 can drive the safety tongue shifting fork 168 to rotate in the rotation process, the safety tongue shifting fork 168 is provided with a shifting tooth 1681, wherein the shifting tooth 1681 is used for being in transmission fit with the pull plate 162, when the safety tongue shifting fork 168 can shift the pull plate 162 to slide in the transmission process, the pull plate 162 can abut against the transmission shifting piece 166 and push the transmission shifting piece 166 to rotate in the sliding process, and when the transmission shifting piece 166 can push the transmission plate 131 to slide in the rotation process, so that the transmission plate 131 can drive the safety tongue 120 to be retracted into the accommodating cavity 111 through the safety tongue shifting assembly 135.

In addition, in this embodiment, the door lock 100 further includes a door handle (not shown), the door handle is rotatably assembled in the assembling hole 1133 and connected to the bolt fork 167, the bolt fork 167 can be driven to rotate by rotating the door handle, and the bolt fork 167 can drive the safety bolt fork 168 to rotate in the rotating process.

Referring to fig. 1, in the present embodiment, the door lock further includes a latch bolt assembly 170, the latch bolt assembly 170 is slidably disposed in the receiving cavity 111 and selectively extends out of the latch bolt hole 112 or retracts into the receiving cavity 111 along an axial direction of the latch bolt hole 112, wherein the sliding direction is an X direction shown in fig. 1. Referring to fig. 6, the latch bolt assembly 170 includes a latch bolt 171 and a latch bolt fixing portion 172, wherein the latch bolt fixing portion 172 is disposed on the lock housing 110 and located in the receiving cavity 111, the latch bolt 171 is rotatably connected to the latch bolt fixing portion 172, and a rotation axis of the latch bolt 171 is substantially perpendicular to an axis of the latch bolt hole 112.

Specifically, referring to fig. 7, in the present embodiment, the latch 171 is slidably disposed on the bottom case 113 along the axial direction of the latch hole 112, the latch 171 has a substantially triangular prism-shaped structure, the latch 171 has a latch surface 1711, and the latch surface 1711 is a surface of the latch 171 that is inclined with respect to the axial direction of the latch hole 112, and when being installed, may collide with the door body. When the latch face 1711 is subjected to a force in the direction of the latch hole 112 and is not blocked in the direction of the latch hole 112, the latch 171 can slide in the axial direction of the latch hole 112. It will be appreciated that the force applied to the latch face 1711 in the axial direction of the latch bore 112 may be in a direction directly from the force applied to the latch face 121 in the axial direction of the latch bore 112, or may be a component of the force applied in other directions. As an example, the latch tongue surface 1711 is inclined with respect to the base plate 1131, and the latch tongue surface 1121 is located on a side of the latch tongue 171 away from the base plate 1131, and further, the latch tongue 171 further includes a resisting surface 1712 and a connecting surface 1713, wherein the resisting surface 1712 is substantially perpendicular to the connecting surface 1713 and is connected to each other, and the resisting surface 1712 faces the base plate 1131 and is substantially parallel to the surface of the base plate 1131. The angled tongue surface 1711 is connected to the abutment surface 1712 and the connection surface 1713. In the movement process of the latch bolt 171, at least a part of the latch bolt surface 1711 extends out of the latch bolt hole 112, that is, in the installation and use state, the latch bolt surface 1711 does not completely retract into the latch bolt hole 112, and when the latch bolt 171 exits from the lock hole of the door frame to complete the unlocking action, the latch bolt surface 1711 only needs to rotate to be approximately parallel to the door frame or to be located in the gap between the door body and the door frame to complete the unlocking. In addition, in some embodiments, the latch tongue 171 may also be of other prismatic structures, for example, the latch tongue 171 may be of a quadrangular prism structure, on which the corresponding latch tongue surface 1711 is disposed.

Referring to fig. 8, in the present embodiment, the latch 171 is provided with a protrusion 1714, wherein the protrusion 1714 is connected to the connecting surface 1713, the protrusion 1714 is provided with a hinge hole 1715, and the hinge hole 1715 is used for being hinged to the latch fixing portion 172. Specifically, the hinge hole 1715 extends through the protrusion 1714, and the axis of the hinge hole 1715 is substantially perpendicular to the axial direction of the latch hole 112, so that the axis of rotation of the latch 171 is substantially perpendicular to the axial direction of the latch hole 112. Further, the protrusion 1714 has a protruding surface 1716 distal from the connection surface 1713, wherein the protruding surface 1716 is planar and substantially parallel to the connection surface 1713.

In this embodiment, the latch bolt fixing portion 172 is slidably disposed on the lock case 110 along the axial direction of the latch bolt hole 112, and specifically, as shown in fig. 9, the latch bolt fixing portion 172 includes a latch bolt rod 1721 and a blocking portion 1722, wherein the latch bolt rod 1721 is a substantially straight rod-shaped structure.

The latch rod 1721 is rotatably connected to the latch 171 and slidably disposed along the axial direction of the latch hole 112. Specifically, the end of the latch rod 1721 is provided with a matching hinge hole 1723 matching with the hinge hole 1715, wherein the matching hinge hole 1723 penetrates through the latch rod 1721, and the matching hinge hole 1723 is coaxially arranged with the hinge hole 1715. When the latch bolt rod 1721 is assembled with the latch bolt 171, the hinge hole 1715 can be penetrated through by the rotating shaft and can be hinged by matching with the hinge hole 1723. Wherein the latch bolt fixing portion 172 is slidably disposed along the axial direction of the latch bolt hole 112 together with the latch bolt 171 so that the latch bolt 171 can partially or completely extend out of the latch bolt hole 112.

The blocking portion 1722 is connected to an end portion of the latch rod 1721 away from the latch 171 and bent relative to the latch rod 1721, and the latch rod 1721 can be matched with the lock housing 110 or other structures through the blocking portion 1722 to prevent the latch rod 1721 from rotating or limiting. In addition, in some embodiments, the latch fixing part 172 may be provided with other structures, for example, the latch fixing part 172 may be provided with a plate-shaped structure.

Referring to fig. 6 and 9, in the present embodiment, the latch fixing portion 172 is provided with a first engaging portion 1724, wherein the first engaging portion 1724 includes a locking slot 1725 disposed on the latch fixing portion 172, specifically, the locking slot 1725 is disposed on the latch rod 1721, and the locking slot 1725 penetrates through an edge of the latch rod 1721. The locking slot 1725 is used for cooperating with a locking mechanism to limit the rotation of the latch tongue 171, wherein the locking mechanism can be clamped into the locking slot 1725 to tightly abut against the latch tongue 171, so that the latch tongue 171 cannot rotate.

Further, in this embodiment, the number of the locking slots 1725 is two, wherein the locking slots 1725 are respectively disposed on two opposite sides of the latch rod 1721. In addition, in other embodiments, the number of the locking slots 1725 may be adjusted according to actual requirements.

Referring to fig. 10, in the present embodiment, the door lock 100 further includes a locking mechanism 180, wherein the locking mechanism 180 is disposed in the receiving cavity 111 and is used for selectively limiting the rotation of the latch 171, and the rotation of the latch 171 is to limit the rotation of the latch 171 relative to the latch fixing portion 172. In this embodiment, the locking mechanism 180 includes a locking member 181 and a pushing member 182, the locking member 181 abuts against the latch 171 and is slidably assembled in the receiving cavity 111, the pushing member 182 is movably assembled in the receiving cavity 111 and selectively abuts against the locking member 181, it should be noted that when the pushing member 182 abuts against the locking member 181, the locking member 181 cannot slide relative to the latch 171, at this time, the protruding surface 1716 abuts against the locking member 181, and the latch 171 cannot rotate due to the latch 171 abutting against the locking member 131. In this embodiment, the pushing block 182 is in driving fit with the pulling plate 165, wherein the pulling plate 165 can push the pushing block 182 to slide during the sliding process.

Specifically, in the present embodiment, referring to fig. 10 again, the locking element 181 is a substantially rectangular frame structure, wherein the locking element 181 includes a first plate 1811, a second plate 1812 and a connecting plate 1814, the first plate 1811 and the second plate 1812 are disposed opposite to each other, and the connecting plate 1814 is connected between the first plate 1811 and the second plate 1812. The locking member 181 is provided with a fitting through hole 1815, wherein the fitting through hole 1815 penetrates the first plate body 1811 and the second plate body 1812, and the axis of the fitting through hole 1815 substantially coincides with the axis of the latch hole 112.

When assembling, as shown in fig. 11, the latch rod 1721 passes through the assembling through hole 1815 to connect with the latch 171, wherein the latch 171 and the latch rod 1721 can rotate around the axis of the assembling through hole 1815 as the rotation center, so that the latch 171 can be reversed. The locking slot 1725 of the latch rod 1721 is located between the first plate 1811 and the second plate 1812. In addition, the first plate body 1811 abuts against the latch bolt 171, and it can be understood that the protruding surface 1716 abuts against the first plate body 1811, at this time, the abutting surface 1712 is substantially parallel to the axis of the latch bolt hole 112, and an included angle is formed between the latch bolt surface 1711 and the axis of the latch bolt hole 112, and the included angle is smaller than 90.

In this embodiment, referring to fig. 5, the pushing block 182 is slidably disposed on the bottom plate 1131 of the lock housing 110, wherein the sliding direction of the pushing block 182 is substantially perpendicular to the axial direction of the bolt hole 112, wherein the pushing block 182 is in transmission fit with the pulling plate 165, and the pulling plate 165 can abut against the pushing block 182 during the sliding process and push the pushing block 182 to slide. Referring to fig. 10, in the present embodiment, the pushing block 182 includes a pushing block body 1821, wherein the pushing block body 1821 is substantially U-shaped, and the pushing block body 1821 has two free ends (not shown), and the two free ends both extend toward the same side of the pushing block body 1821 and toward the locking element 181. The pushing block 182 has a second engaging portion 1822 engaged with the first engaging portion 1724, and when the first engaging portion 1724 is engaged with the second engaging portion 1822, the pushing block 182 abuts against the locking member 181 and the latch fixing portion 172.

Specifically, the second engaging portion 1822 includes two engaging blocks 1823, the two engaging blocks 1823 are disposed at an interval, and are disposed at two free ends, and the two engaging blocks 1823 correspond to the two locking engaging grooves 1725 of the latch fixing portion 172 and can be inserted into the locking engaging grooves 1725. When the latch 1823 is engaged with the locking latch 1725, the pushing block 182 can abut against the first plate 1811 and the second plate 1812 at the same time, so that the locking element 181 cannot move along the axial direction of the latch hole 112, and at this time, the locking element 181 abuts against the protruding surface 1716 of the latch 171, so that the locking element 181 abuts against the latch 171, and the latch 171 cannot rotate relative to the latch fixing portion 172.

In other embodiments, the first engaging portion 1724 can also be configured as a latch, and the second engaging portion 1822 can be configured as a latch structure cooperating with the latch, so as to also enable the pushing block 182 to be latched with the latch fixing portion 172.

In this embodiment, referring to fig. 11 again, the locking mechanism 180 further includes a restoring element 183 for restoring the pushing element 182, wherein the restoring element 183 is disposed between the pushing element 182 and the locking element 181 and abuts against the pushing element 182 and the locking element 181. Wherein the restoring member 183 may be made of a material having elasticity, such as a spring or rubber.

In some embodiments, the locking member 181 may not be provided, for example, the protrusion 1714 of the latch 171 may be provided with a slot cooperating with the detent 1823, and when the detent 1823 is snapped into the slot of the protrusion 1714, the latch 171 may also abut against the pushing block 182, so that the latch 171 cannot rotate relative to the latch fixing portion 172.

Referring to fig. 5 and 11, the door lock 100 further includes a return mechanism 190 disposed in the receiving cavity 111 for returning the latch 171. In this embodiment, the restoring mechanism 190 includes an elastic member 191 and a stopper 192, and the elastic member 191 may be made of an elastic material, such as a spring or rubber. In this embodiment, the elastic member 191 is a spring, wherein the blocking piece 192 has a through hole (not shown), and the structure of the through hole is adapted to the structure of the latch rod 1721.

During assembly, the latch rod 1721 sequentially penetrates through the through hole of the blocking piece 192, the spring and the assembly through hole 1815 of the locking piece 181 and is then rotatably connected with the latch 171, and the latch rod 1721 can slide along the axial direction of the latch hole 112; two clamping blocks 1823 extend between the first plate 1811 and the second plate 1812; the pushing block 182 faces the locking element 181, the two locking blocks 1823 are selectively inserted into the locking slot 1725, and the restoring element 183 is disposed between the locking element 181 and the pushing block 182 and abuts against the locking element 181 and the pushing block 182, respectively. The blocking plate 142 can be fixed to the lock case 110, wherein the blocking plate 192 can block the latch rod 1721 from further sliding when the latch rod 1721 slides towards the latch hole 112 until the blocking portion 122 abuts against the blocking plate 192. The elastic member 191 is sleeved on the latch rod 1721, and one end of the elastic member 191 abuts against the locking member 181.

When the push block 182 is in the first position, the latch 171 is restrained from rotation; when the pulling plate 165 pushes the pushing block 182 to move from the first position to the second position, the locking mechanism 180 releases the limitation on the latch tongue 171, and at this time, the latch tongue 171 can be driven to rotate when the latch tongue surface 1711 is stressed, and at this time, during the rotation, one end of the convex portion 1714 of the latch tongue 171 is separated from the locking member 181, and the other end of the convex portion is supported on the locking member 181 and presses against the locking member 181, so that the latch tongue 171 can push the locking member 181 to slide, and at the same time, the locking member 181 pushes the elastic member 191 to be compressed during the sliding process, and as the locking member 181 is subjected to the resilience force of the elastic member 191, the locking member 181 always abuts against the latch; when the latch 171 is rotated to a certain angle, for example: when the locking member 181 is rotated until the included angle formed between the protruding surface 1716 and the first plate 1811 of the locking member 181 is 45 ° and the acting force acting on the latch tongue 171 disappears, the locking member 181 is under the force of the resilient force of the elastic member 191, because only one end of the protruding portion 1714 abuts against the locking member 181, the other end of the protruding portion 1714 is separated from the locking member 181, and the end of the protruding portion 1714 abutting against the locking member 181 is subjected to a force, so that the protruding portion 1714 is subjected to a turning force opposite to the original force, and the latch tongue 171 is reversely rotated until the protruding surface 1716 abuts against the first plate 1811.

The operation of the door lock 100 is explained as follows:

when the driving part 161 drives the toggle gear 1622 to rotate clockwise, the toggle gear 1622 drives the bolt toggle 164 to rotate clockwise, the bolt toggle 164 toggles the rotary piece 151 to rotate counterclockwise in the rotation process, and the rotary piece 151 drives the bolt fixing part 121 to move towards the direction far away from the bolt hole 112 in the rotation process, so that the bolt 120 is retracted into the accommodating cavity 111; meanwhile, the toggle gear 1622 drives the safety tongue toggle sleeve 163 to rotate clockwise, the safety tongue toggle sleeve 163 pushes the pull plate 165 to slide in the rotating process, and when the pull plate 165 pushes the push block 182 to move from the first position to the second position in the sliding process, the locking mechanism 180 releases the limit on the inclined tongue 171, and at the moment, when the inclined tongue surface 1711 is stressed, the inclined tongue 171 can be driven to rotate; meanwhile, the pulling plate 165 pushes the transmission shifting piece 166 to rotate in the sliding process, and the transmission shifting piece 166 pushes the transmission plate 131 to push the transmission plate 131 to slide in the rotating process, so that the safety tongue 120 is retracted into the accommodating cavity 111, and unlocking is realized.

When the bolt shifting fork 167 rotates clockwise, the bolt shifting fork 167 shifts the pull plate 165 to slide in the rotating process, the pull plate 165 pushes the push block 182 to move from the first position to the second position in the sliding process, the locking mechanism 180 releases the limit on the latch bolt 171, and at the moment, the latch bolt 171 can be driven to rotate when the latch bolt surface 1711 is stressed; meanwhile, the pulling plate 165 pushes the transmission shifting piece 166 to rotate in the sliding process, and the transmission shifting piece 166 pushes the transmission plate 131 to slide in the rotating process so as to enable the safety tongue 120 to be retracted into the accommodating cavity 111; the bolt shifter 167 drives the rotary piece gear 152 to rotate counterclockwise, and the rotary piece 151 drives the bolt fixing portion 121 to move towards the direction far away from the bolt hole 112 in the rotation process, so that the bolt 140 is retracted into the receiving cavity 111, and unlocking is achieved.

In the present embodiment, a door lock 100 is provided, and the bolt 120 and the safety bolt 140 are slidably disposed in the lock case 110, the driving mechanism 160 is configured to slide by driving the driving plate 131, the driving plate 131 can drive the safety bolt toggle assembly 135 to rotate during the sliding process, so that the safety bolt 140 is retracted into the receiving cavity 111, meanwhile, the driving mechanism 160 drives the bolt toggle mechanism 150 to rotate, the bolt toggle mechanism 150 drives the bolt 120 to be retracted into the lock case 110 during the rotating process, and when the door lock 100 is unlocked, the bolt 120 and the safety bolt 140 can be simultaneously unlocked.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A door lock, comprising:

the lock shell comprises a bottom shell and a side plate, the side plate is arranged at the edge of the bottom shell in a surrounding mode and forms an accommodating cavity, and the side plate is provided with a safety bolt hole and a lock bolt hole which are communicated with the accommodating cavity;

the safety tongue is arranged in a telescopic manner along the axial direction of the safety tongue hole;

the safety tongue poking mechanism comprises a transmission plate and a safety tongue poking assembly, the safety tongue poking assembly is rotatably arranged on the bottom shell and selectively drives the safety tongue to extend out or retract to the bottom shell, and the transmission plate is slidably arranged on the bottom shell and is in transmission fit with the safety tongue poking assembly;

the lock tongue is assembled in the lock tongue hole;

the lock tongue toggle mechanism is rotationally connected with the bottom shell and drives the lock tongue to stretch in the rotating process; and

and the driving mechanism is used for driving the transmission plate to slide and the lock tongue toggle mechanism to rotate.

2. The door lock of claim 1, wherein the safety tongue toggle mechanism comprises a toggle button and a safety tongue toggle piece, the toggle button is rotatably disposed on the bottom case and selectively drives the lock tongue to extend out of or retract into the lock tongue hole, the safety tongue toggle piece comprises a connecting end and a free end which are connected with each other, the connecting end is rotatably disposed on the bottom case, the free end is in transmission connection with the toggle button and drives the toggle button to rotate in a rotating process, and the transmission plate is in transmission fit with the safety tongue toggle piece.

3. The door lock of claim 2, wherein the toggle button comprises a rotating portion and a toggle portion, the rotating portion is rotatably connected to the bottom case, the toggle portion is connected to the rotating portion, the bolt toggle mechanism further comprises a connecting rod, one end of the connecting rod is rotatably connected to the free end, and the other end of the connecting rod is connected to the toggle portion.

4. The door lock of claim 1, wherein the driving mechanism comprises a driving portion, a gear mechanism, a safety tongue shifting sleeve and a lock tongue shifting sleeve, the safety tongue shifting sleeve and the lock tongue shifting sleeve are rotatably connected to the bottom shell and are in transmission fit with the gear mechanism, the driving portion is used for driving the gear mechanism to rotate, the safety tongue shifting sleeve shifts the transmission plate to slide in the rotating process, and the lock tongue shifting sleeve shifts the lock tongue shifting mechanism to rotate in the rotating process.

5. The door lock according to claim 4, wherein the bottom shell is provided with an assembly hole, the safety tongue shift sleeve is rotatably assembled in the assembly hole, the gear mechanism comprises a gear box in transmission fit with the driving part and a shift sleeve gear, the shift sleeve gear is meshed with the gear box, the shift sleeve gear is connected to the safety tongue shift sleeve, the safety tongue shift sleeve is connected to the shift sleeve gear, and the driving part drives the safety tongue shift sleeve and the safety tongue shift sleeve to rotate in the rotating process of the shift sleeve gear.

6. The door lock according to claim 4, wherein the driving mechanism further comprises a pulling plate and a transmission shifting piece, the pulling plate is slidably disposed on the bottom shell and is in transmission fit with the safety tongue shifting sleeve, the transmission shifting piece comprises a first shifting end and a second shifting end which are connected with each other, a joint of the first shifting end and the second shifting end is rotatably disposed on the bottom shell, the first shifting end is hinged to the transmission plate, and the pulling plate selectively abuts against the transmission shifting piece and shifts the transmission plate to slide.

7. The door lock of claim 1, wherein the bolt toggle mechanism comprises a rotary piece, the rotary piece is rotatably connected to the bottom case and is in transmission fit with the driving mechanism, the door lock further comprises a bolt fixing portion, the bolt fixing portion is arranged on the bottom case and is connected with the bolt along an axial sliding direction of the bolt hole, and the rotary piece is in transmission fit with the bolt fixing portion and toggles the bolt fixing portion to slide in a rotating process.

8. The door lock of claim 1, wherein the driving mechanism further comprises a latch fork and a safety latch fork for connection with the door handle, the latch fork is rotatably connected to the bottom case and in driving engagement with the latch striking mechanism, and the safety latch fork is connected to the latch fork and in driving engagement with the driving plate.

9. The door lock of claim 8, wherein the bolt fork is provided with a square shaft hole, the bolt toggle mechanism comprises a rotary plate gear, the rotary plate gear is in transmission fit with the bolt fork, and the rotary plate gear drives the bolt to extend and retract during rotation.

10. The door lock of claim 1, comprising a guide mechanism for guiding the driving plate.