CN110593664B

CN110593664B - Door lock

Info

Publication number: CN110593664B
Application number: CN201910941449.0A
Authority: CN
Inventors: 张天长; 杨勇强
Original assignee: Zhongshan Sangong Metal Products Co ltd
Current assignee: Zhongshan Sangong Metal Products Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2024-05-10
Anticipated expiration: 2039-09-30
Also published as: CN110593664A

Abstract

The invention discloses a door lock, which comprises a lock body, a lock tongue assembly, a transmission assembly and a first driving device, wherein the lock tongue assembly is slidably arranged on the lock body, the transmission assembly comprises a mounting shaft, a first gear piece, a first transmission plate, a second transmission plate, a first pivot and a second pivot, an arc-shaped chute is formed in the first transmission plate, a linkage column positioned in the chute is arranged on the first gear piece, one end of the second transmission plate is pivoted on the first transmission plate through the first pivot, the other end of the second transmission plate is pivoted on the lock tongue assembly through the second pivot, the first driving device is arranged on the lock body, the first driving device is in transmission engagement with the first gear piece, and when the linkage column is positioned at one end of the chute, the axis of the second pivot, the axis of the first pivot and the axis of the mounting shaft are coplanar, namely in a dead point state, the lock tongue assembly is limited to move towards the interior of the lock body, and the transmission is safe, reliable and error unlocking motion is avoided.

Description

Door lock

Technical Field

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

Background

With the progress of science and technology, people put higher demands on the safety of door locks, which are important devices for guaranteeing the property safety of people. The existing door lock structure has the following problems: 1. when vibration vertical to the door direction is generated or a lock tongue assembly on the door lock is pushed, the lock tongue assembly is easy to move towards the lock body, so that the door lock is unlocked, the transmission is unstable and the safety is not high; 2. the existing door lock is required to be provided with a mounting hole on a lock body so as to mount a lock core device, however, the mounting hole required to be provided is usually larger, the mounting is inconvenient, the structure is not compact, and substances such as dust are easy to enter so as to influence the service life of the door lock.

Disclosure of Invention

The invention aims to at least solve one of the technical problems existing in the prior art and provide a door lock which is stable in transmission and high in safety.

According to an embodiment of the present invention, a door lock includes:

A lock body;

The lock tongue assembly is slidably arranged on the lock body;

The transmission assembly comprises a mounting shaft, a first gear piece, a first transmission plate, a second transmission plate, a first pivot and a second pivot, wherein the mounting shaft is arranged on the lock body, the first gear piece and the first transmission plate are both rotatably arranged on the mounting shaft, an arc-shaped chute is formed in the first transmission plate, a linkage column positioned in the chute is arranged on the first gear piece, one end of the second transmission plate is pivoted on the first transmission plate through the first pivot, and the other end of the second transmission plate is pivoted on the lock tongue assembly through the second pivot;

The first driving device is arranged on the lock body and is in transmission engagement with the first gear piece;

When the linkage column is positioned at one end of the sliding groove, the axis of the second pivot, the axis of the first pivot and the axis of the mounting shaft are coplanar.

The door lock provided by the embodiment of the invention has at least the following technical effects: when locking, the first driving device drives the first gear piece to rotate, and the first gear piece drives the first transmission plate to rotate through the cooperation of the linkage column and the sliding groove, so that the second transmission plate rotates. When the axis of the second pivot, the axis of the first pivot and the axis of the mounting shaft are coplanar, namely in a dead point state, the movement of the lock tongue assembly towards the lock body is limited; when unlocking, the first driving device drives the first gear piece to reversely rotate, the first transmission plate and the second transmission plate rotate, the spring bolt assembly is driven to move towards the inside of the lock body, and the transmission is safe and reliable and error unlocking actions are avoided.

According to some embodiments of the invention, the first driving device comprises a second gear member, a lock core assembly and a first toggle block, the second gear member is rotatably arranged on the lock body, the second gear member is meshed with the first gear member, the second gear member is annular, the lock core assembly is positioned in the middle of the second gear member, a convex part arranged towards the lock core assembly is arranged on the inner wall of the second gear member, and the first toggle block matched with the convex part is arranged on the lock core assembly. The second gear piece and the lock core device are arranged, the first toggle block is matched with the convex part, the installation is convenient and fast, the structure is compact, and the service life of the door lock is further prolonged.

According to some embodiments of the invention, the lock body is provided with at least two limiting pieces, and the at least two limiting pieces are arranged around the second gear piece;

The limiting piece is provided with a bending part, a clamping space is formed between the bending part and the lock body, the second gear piece is positioned in the clamping space and can rotate relative to the clamping space, so that the second gear piece can rotate relative to the lock body, the relative position of the second gear piece is limited, the transmission is reliable, and the assembly efficiency is high.

According to some embodiments of the invention, a second driving device is further arranged on the lock body;

The second driving device comprises a gearbox, a driving motor and a third gear piece, wherein the gearbox is arranged on the lock body, the driving motor is connected with the input end of the gearbox, the third gear piece is connected with the output end of the gearbox, and the third gear piece is meshed with the second gear piece. The second driving device is arranged, the third gear piece, the second gear piece gearbox and the driving motor are matched, so that the driving motor directly controls the lock tongue assembly, the lock is convenient to unlock and lock, the lock tongue assembly is not required to be controlled to move by rotating the handle by hands, and meanwhile, the size of the door lock is reduced.

According to some embodiments of the invention, the lock body is provided with an opening, a control module is detachably connected to the corresponding opening in the lock body through a fastener, and the control module is electrically connected with the driving motor. The operation of the second driving device is conveniently controlled, and the disassembly, the assembly, the maintenance and the replacement are convenient.

According to some embodiments of the invention, the lock body is rotatably provided with a square shaft deflector rod, and the square shaft deflector rod is sleeved with a first deflector pawl and a second deflector pawl which are linked with the square shaft deflector rod, the first deflector pawl is meshed with the first gear member, and the second deflector pawl is meshed with the first gear member and the second gear member. When the door lock is installed in a door, the first poking claw and the second poking claw are arranged, and the unlocking of the door lock can be realized by rotating the square shaft poking rod.

According to some embodiments of the invention, the side wall of the square shaft deflector rod is provided with a step and a bulge connected with the step;

The first mounting through hole is formed in the first poking claw, the first limiting notch matched with the protrusion in a linkage mode is formed in the side wall of the first mounting through hole, the second mounting through hole is formed in the second poking claw, the square shaft poking rod penetrates through the first mounting through hole and the second mounting through hole, the second poking claw is sleeved on the step, and the square shaft poking device is reasonable in structural design and reliable in transmission.

According to some embodiments of the present invention, the mounting shaft is sleeved with a second stirring block linked with the first gear member, and the second stirring block is provided with a stirring part;

The lock body is provided with a bevel bolt component, and the bevel bolt component is provided with a forward stop surface; the square shaft deflector rod is sleeved with a first deflector matched with the stop surface, the first deflector is provided with a transmission part which faces the second deflector block, the transmission part is matched with the deflector block, the first gear part drives the second deflector block to rotate, the deflector block on the second deflector block pushes the transmission part, then the first deflector block is abutted to the stop surface and drives the inclined tongue component to move towards the inner part of the lock body, and the transmission is safe and reliable.

According to some embodiments of the present invention, the square shaft driving lever is sleeved with a second driving piece matched with the stop surface, the second driving piece is provided with a second limiting notch matched with the protrusion in a linkage manner, when the square shaft driving lever rotates, the second driving piece is driven to enable the second driving piece to abut against the stop surface, the inclined tongue component is driven to move towards the lock body, the transmission is reliable, and the double-insurance function is provided.

According to some embodiments of the invention, the lock body is further provided with a hook structure, the hook structure comprising:

The world hook is movably arranged on the lock body, and a guide structure matched with the world hook is arranged on the lock body;

The transmission structure is arranged on the top-bottom hook, and the spring bolt assembly can drive the top-bottom hook to move through the transmission structure when moving. The installation performance is improved, the anti-theft performance is enhanced, and the structural design is reasonable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an overall schematic of a door lock embodiment of the present invention;

FIG. 2 is a schematic view of a first perspective structure of an embodiment of the door lock of the present invention;

FIG. 3 is a second perspective view of an embodiment of the door lock of the present invention;

FIG. 4 is an exploded schematic view of an embodiment of the door lock of the present invention;

FIG. 5 is a schematic structural view of an embodiment of a transmission assembly;

FIG. 6 is a schematic view of the structure of the first driving device embodiment;

FIG. 7 is a schematic view of a second drive apparatus embodiment;

FIG. 8 is a schematic structural view of an embodiment of a square shaft lever.

Reference numerals:

The lock body 10, the first lock shell 11, the second lock shell 12, the mounting plate 13 and the opening 131;

a bolt assembly 20, a bolt 21, a lock plate 22;

the transmission assembly 30, the mounting shaft 31, the first gear piece 32, the linkage post 321, the first transmission plate 33, the chute 331, the second transmission plate 34, the first pivot 35, the second pivot 36, the second toggle block 37 and the toggle portion 371;

The first driving device 40, the second gear piece 41, the lock core assembly 42, the first stirring block 43, the convex part 411, the limiting piece 45 and the bending part 451;

a gearbox 51, a driving motor 52, a third gear piece 53 and a control module 54 of the second driving device 50;

Square shaft deflector 60, step 61, boss 62, first deflector 63, first mounting through hole 631, first limiting gap 6311, second deflector 64 second mounting through hole 641, first deflector 65, transmission portion 651, second deflector 66, second limiting gap 661;

The latch assembly 70, the latch block 71, the push rod 72, the guide plate 73;

the device comprises a top and bottom hook 81, a guide groove 82, a guide piece 83, a transmission groove 84 and a transmission piece 85.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in fig. 1, are merely for convenience of describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, if a number, a plurality, greater than, less than, exceeding, etc. are present, the meaning of a number is one or more, the meaning of a plurality is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and third is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present invention, unless clearly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be connected directly or indirectly through an intermediary; the connecting device can be fixedly connected, detachably connected and integrally formed; may be a mechanical connection; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1, the door lock according to the embodiment of the invention includes a lock body 10, wherein the lock body 10 includes a first lock shell 11, a second lock shell 12 and a mounting plate 13, and the first lock shell 11, the second lock shell 12 and the mounting plate 13 are detachably connected to each other to assemble the lock body 10 having a mounting cavity, so that the assembly is convenient.

Referring to fig. 2-6, in an embodiment of the present invention, latch bolt assembly 20, transmission assembly 30, and first actuation device 40 are also included.

The lock tongue assembly 20 is slidably disposed on the lock body 10, the transmission assembly 30 includes a mounting shaft 31, a first gear member 32, a first transmission plate 33, a second transmission plate 34, a first pivot 35 and a second pivot 36, the mounting shaft 31 is disposed on the lock body 10, the first gear member 32 and the first transmission plate 33 are both rotatably disposed on the mounting shaft 31, an arc-shaped chute 331 is formed on the first transmission plate 33, a linkage post 321 disposed in the chute 331 is disposed on the first gear member 32, one end of the second transmission plate 34 is pivotally connected to the first transmission plate 33 through the first pivot 35, the other end of the second transmission plate 34 is pivotally connected to the lock tongue assembly 20 through the second pivot 36, the first driving device 40 is disposed on the lock body 10, and the first driving device 40 is in driving engagement with the first gear member 32;

when the link post 321 is located at one end of the chute 331, the axis of the second pivot 36, the axis of the first pivot 35, and the axis of the mounting shaft 31 are coplanar.

It should be noted that, in the embodiment of the present invention, the latch bolt assembly 20 includes a latch bolt 21 and a latch plate 22 connected to the latch bolt 21, the other end of the second transmission plate 34 is pivotally connected to the latch plate 22 through a second pivot 36, and the latch plate 22 has an L-shaped structure.

According to the door lock of the embodiment of the present invention, when the door lock is locked, the first driving device 40 drives the first gear member 32 to rotate, and the first gear member 32 drives the first transmission plate 33 to rotate through the cooperation of the link post 321 and the chute 331, so that the second transmission plate 34 rotates. When the axis of the second pivot 36, the axis of the first pivot 35 and the axis of the mounting shaft 31 are coplanar, i.e., at dead center, movement of the latch bolt assembly 20 toward the interior of the lock body 10 is restricted; when unlocking, the first driving device 40 drives the first gear member 32 to reversely rotate, and the first transmission plate 33 and the second transmission plate 34 rotate to drive the lock tongue assembly 20 to move towards the inside of the lock body 10, so that the transmission is safe and reliable and the error unlocking action is avoided.

Referring to fig. 2 to 4 and fig. 6, in the embodiment of the invention, the first driving device 40 includes a second gear member 41, a lock core assembly 42 and a first toggle block 43, the second gear member 41 is rotatably disposed on the lock body 10, the second gear member 41 is engaged with the first gear member 32, the second gear member 41 is annular, the lock core assembly 42 is located in the middle of the second gear member 41, a protruding portion 411 disposed towards the lock core assembly 42 is disposed on an inner wall of the second gear member 41, and the lock core assembly 42 is provided with the first toggle block 43 matched with the protruding portion 411. The second gear piece 41 and the lock core device are arranged, the first poking block 43 and the convex part 411 are matched, the installation is convenient, the structure is compact, and the service life of the door lock is further prolonged.

Referring to fig. 2 to 4 and fig. 6, in the embodiment of the present invention, three limiting pieces 45 are mounted on the lock body 10, and the three limiting pieces 45 are disposed around the second gear member 41;

the limiting piece 45 is provided with the bending part 451, a clamping space is formed between the bending part 451 and the lock body 10, the second gear piece 41 is positioned in the clamping space and can rotate relative to the clamping space, so that the second gear piece 41 can rotate relative to the lock body 10, the relative position of the second gear piece 41 is limited, the transmission is reliable, and the assembly efficiency is high.

It can be appreciated that the limiting piece 45 is detachably connected to the lock body 10 by a fastener such as a screw; in some embodiments, two limiting plates 45 may be provided, and the two limiting plates 45 are symmetrically disposed about the center of the second gear member 41; of course, the number of the limiting pieces 45 is also set to four or more, which is not limited herein.

It will be appreciated that in some embodiments, the first driving device 40 includes a lock core assembly 42 and a toggle gear disposed on the lock core assembly, the toggle gear is engaged with the first gear member 32, and rotating the lock core assembly rotates the toggle gear, thereby rotating the first gear member 32.

Referring to fig. 2 to 4 and fig. 7, in the embodiment of the present invention, the lock body 10 is further provided with a second driving device 50;

The second driving device 50 includes a gear box 51, a driving motor 52, and a third gear member 53, the gear box 51 is disposed on the lock body 10, the driving motor 52 is connected to an input end of the gear box 51, the third gear member 53 is connected to an output end of the gear box 51, and the third gear member 53 is engaged with the second gear member 41. The second driving device 50, the third gear piece 53, the gear box 51 of the second gear piece 41 and the driving motor 52 are matched, so that the driving motor 52 directly controls the lock tongue assembly 20, the lock is convenient to unlock and lock, the lock tongue assembly 20 is not required to be controlled to move by rotating a handle by hands, and meanwhile, the size of the door lock is reduced.

It should be noted that, referring to fig. 2 to 4, in the embodiment of the present invention, the mounting plate 13 of the lock body 10 is provided with an opening 131, and the corresponding opening 131 in the lock body 10 is detachably connected with the control module 54 through a fastener such as a screw, a pin, etc., and the control module 54 is electrically connected with the second driving device 50, so that not only is the operation of the second driving device 50 controlled, but also the disassembly, the maintenance and the replacement are facilitated. It should be noted that the control module is a wireless control module.

Referring to fig. 2 to 4 and 8, in the embodiment of the present invention, a square shaft lever 60 is rotatably provided on the lock body 10, and a first pawl 63 and a second pawl 64 that are coupled to the square shaft lever 60 are sleeved on the square shaft lever 60, the first pawl 63 is engaged with the first gear member 32, and the second pawl 64 is engaged with the first gear member 32 and the second gear member 41. When the door lock is installed in a door, the first pulling claw 63 and the second pulling claw 64 are arranged, and the unlocking of the door lock can be realized by rotating the square shaft pulling rod 60.

It will be appreciated that in the embodiment of the present invention, the side wall of the square shaft lever 60 has a step 61 and a protrusion 62 connected to the step 61;

The first mounting through hole 631 is formed in the first pusher dog 63, the first limiting notch 6311 which is in linkage fit with the boss 62 is formed in the side wall of the first mounting through hole 631, the second mounting through hole 641 is formed in the second pusher dog 64, the square shaft pusher dog 60 penetrates through the first mounting through hole 631 and the second mounting through hole 641, the second pusher dog 64 is sleeved on the step 61, and the square shaft pusher dog is reasonable in structural design and reliable in transmission.

Referring to fig. 2 to 4, 6 and 8, in the embodiment of the present invention, a second toggle block 37 that is linked with the first gear member 32 is sleeved on the mounting shaft 31, and the second toggle block 37 has a toggle portion 371;

The lock body 10 is provided with a latch bolt assembly 70, and the latch bolt assembly 70 is provided with a forward stop surface; the square shaft deflector rod 60 is sleeved with a first deflector plate 65 matched with the stop surface, the first deflector plate 65 is provided with a transmission part 651 arranged towards the second deflector plate 37, the transmission part 651 is matched with the deflector part 371, the first gear piece 32 drives the second deflector plate 37 to rotate, the deflector part 371 on the second deflector plate 37 pushes the transmission part 651, then the first deflector plate 65 is abutted against the stop surface, and the inclined tongue assembly 70 is driven to move towards the inside of the lock body 10, so that transmission is safe and reliable.

The square shaft deflector rod 60 is sleeved with a second deflector plate 66 matched with the stop surface, the second deflector plate 66 is provided with a second limit notch 661 in linkage with the bulge 62, when the square shaft deflector rod 60 rotates, the second deflector plate 66 is driven to enable the second deflector plate 66 to be abutted against the stop surface, the inclined tongue assembly 70 is driven to move towards the inside of the lock body 10, transmission is reliable, and a double-insurance effect is achieved.

It should be noted that, the latch assembly 70 includes a latch block 71, a push rod 72 pushing the latch block 71 to extend out of the lock body 10, and a guide plate 73 disposed on the push rod 72, where the latch block 71, the push rod 72, and the guide plate 73 are fixedly connected, and the stop surface is disposed on the guide plate 73; the first shifting piece 65 and the second shifting piece 66 are respectively located at two sides of the push rod 72, so that two ends of the guide plate 73 can be shifted by the first shifting piece 65 and the second shifting piece 66, and when the door is unlocked, the double-safety function is achieved, the smoothness of the operation of the inclined tongue assembly 70 is improved, and the door can be prevented from being blown open by wind.

It should be noted that, in the embodiment of the present invention, an elastic member for driving the latch assembly 70 to return is provided between the guide plate 73 and the lock body 10, and the elastic member is a spring or a C-shaped spring; the toggle portion 371 is a post.

Referring to fig. 1 to 4, in the embodiment of the present invention, a hook structure is further provided on the lock body 10, the hook structure includes a top-bottom hook 81 and a transmission structure, the top-bottom hook 81 is movably provided on the lock body 10, a guide structure matched with the top-bottom hook 81 is provided on the lock body 10, the transmission structure is provided on the top-bottom hook 81, and the latch bolt assembly 20 can drive the top-bottom hook 81 to move through the transmission structure when moving. The installation performance is improved, the anti-theft performance is enhanced, and the structural design is reasonable.

Referring to fig. 1 to 4, in the embodiment of the present invention, the guide structure includes a guide groove 82 and a guide piece 83, the guide groove 82 is provided on the world hook 81, the guide piece 83 is provided on the lock body 10, and the guide piece 83 protrudes into the guide groove 82, thereby playing a guiding role when the world hook 81 acts.

Referring to fig. 1 to 4, in the embodiment of the present invention, the transmission structure includes a transmission slot 84 disposed on the top-bottom hook 81 and a transmission member 85 disposed on the lock plate 22, the transmission member 85 extends into the transmission slot 84, and the transmission slot 84 is inclined to the guide slot 82, so that the stroke adjustment structure of the top-bottom hook 81 is simple and the position is reliable.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A door lock, comprising:

A lock body (10);

A latch bolt assembly (20), the latch bolt assembly (20) being slidably disposed on the lock body (10);

The transmission assembly (30), the transmission assembly (30) comprises a mounting shaft (31), a first gear piece (32), a first transmission plate (33), a second transmission plate (34), a first pivot (35) and a second pivot (36), the mounting shaft (31) is arranged on the lock body (10), the first gear piece (32) and the first transmission plate (33) are both rotatably arranged on the mounting shaft (31), the first transmission plate (33) is provided with an arc-shaped chute (331), the first gear piece (32) is provided with a linkage column (321) positioned in the chute (331), one end of the second transmission plate (34) is pivoted on the first transmission plate (33) through the first pivot (35), and the other end of the second transmission plate (34) is pivoted on the lock tongue assembly (20) through the second pivot (36);

A first drive (40) which is arranged on the lock body (10) and which first drive (40) is in driving engagement with the first gear element (32);

When the linkage post (321) is positioned at one end of the chute (331), the axis of the second pivot (36), the axis of the first pivot (35) and the axis of the mounting shaft (31) are coplanar;

The first driving device (40) comprises a second gear piece (41), a lock core assembly (42) and a first stirring block (43), the second gear piece (41) is rotatably arranged on the lock body (10), the second gear piece (41) is meshed with the first gear piece (32), the second gear piece (41) is annular, the lock core assembly (42) is positioned in the middle of the second gear piece (41), the second gear piece (41) is provided with a convex part (411) which faces the lock core assembly (42), and the lock core assembly (42) is provided with the first stirring block (43) matched with the convex part (411);

The lock body (10) is also provided with a hook body structure, and the hook body structure comprises:

The lock comprises a lock body (10), a top-bottom hook (81), a bottom-bottom hook (81) and a guide structure, wherein the top-bottom hook (81) is movably arranged on the lock body (10), and the lock body (10) is provided with the guide structure matched with the top-bottom hook (81);

And the transmission structure is arranged on the top-bottom hook (81), and the spring bolt assembly (20) can drive the top-bottom hook (81) to move through the transmission structure when moving.

2. The door lock according to claim 1, wherein: at least two limiting sheets (45) are arranged on the lock body (10), and the at least two limiting sheets (45) are arranged around the second gear piece (41);

The limiting piece (45) is provided with a bending part (451), a clamping space is formed between the bending part (451) and the lock body (10), and the second gear piece (41) is positioned in the clamping space and can rotate relative to the clamping space.

3. The door lock according to claim 2, wherein: the lock body (10) is also provided with a second driving device (50);

The second driving device (50) comprises a gearbox (51), a driving motor (52) and a third gear piece (53), the gearbox (51) is arranged on the lock body (10), the driving motor (52) is connected with the input end of the gearbox (51), the third gear piece (53) is connected with the output end of the gearbox (51), and the third gear piece (53) is meshed with the second gear piece (41).

4. A door lock according to claim 3, wherein: an opening (131) is formed in the lock body (10), a control module (54) is detachably connected to the position, corresponding to the opening (131), in the lock body (10) through a fastener, and the control module (54) is electrically connected with the driving motor (52).

5. The door lock according to claim 2 or 4, wherein: the lock body (10) is rotatably provided with a square shaft deflector rod (60), the square shaft deflector rod (60) is sleeved with a first deflector rod (63) and a second deflector rod (64) which are linked with the square shaft deflector rod (60), the first deflector rod (63) is meshed with the first gear piece (32), and the second deflector rod (64) is meshed with the first gear piece (32) and the second gear piece (41).

6. The door lock of claim 5, wherein: the side wall of the square shaft deflector rod (60) is provided with a step (61) and a bulge (62) connected with the step (61);

The novel square shaft shifting device is characterized in that a first mounting through hole (631) is formed in the first shifting claw (63), a first limiting notch (6311) which is in linkage fit with the protrusion (62) is formed in the side wall of the first mounting through hole (631), a second mounting through hole (641) is formed in the second shifting claw (64), the square shaft shifting lever (60) penetrates through the first mounting through hole (631) and the second mounting through hole (641), and the second shifting claw (64) is sleeved on the step (61).

7. The door lock of claim 6, wherein: the mounting shaft (31) is sleeved with a second stirring block (37) linked with the first gear piece (32), and the second stirring block (37) is provided with a stirring part (371);

The lock body (10) is provided with a bevel tongue assembly (70), and the bevel tongue assembly (70) is provided with a forward stop surface; the square shaft deflector rod (60) is sleeved with a first deflector sheet (65) matched with the stop surface, the first deflector sheet (65) is provided with a transmission part (651) arranged towards the second deflector block (37), and the transmission part (651) is matched with the deflector part (371).

8. The door lock of claim 7, wherein: the square shaft deflector rod (60) is sleeved with a second deflector piece (66) matched with the stop surface, and a second limiting notch (661) matched with the bulge (62) in a linkage mode is formed in the second deflector piece (66).