CN110593664A

CN110593664A - Door lock

Info

Publication number: CN110593664A
Application number: CN201910941449.0A
Authority: CN
Inventors: 张天长; 杨勇强
Original assignee: Zhongshan Three Metal Products Co Ltd
Current assignee: Zhongshan Three Metal Products Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2019-12-20

Abstract

The invention discloses a door lock, which comprises a lock body, a lock tongue component, a transmission component and a first driving device, wherein the lock tongue component is slidably arranged on the lock body, the transmission component comprises an installation 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 component 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, 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 installation shaft are coplanar, namely, the dead center state is formed, and the lock tongue component is limited to move towards the interior of the lock body, the transmission is safe and reliable, and the wrong unlocking action 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 forward higher requirements on the safety of door locks, and the door locks are important equipment for ensuring the property safety of people. The problem that current door lock structure exists: 1. when vibration perpendicular to the door direction is generated or a spring bolt assembly on the door lock is pushed, the spring bolt assembly is easy to move towards the lock body, so that the door lock is unlocked, the transmission is unstable, and the safety is low; 2. the existing door lock needs to be provided with a mounting hole on a lock body of the existing door lock so as to mount a lock core device, however, the mounting hole which needs to be formed is usually large, the installation is inconvenient, the structure is not compact, and substances such as dust and the like easily enter the existing door lock, so that the service life of the door lock is influenced.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art and provides a door lock, which is stable in transmission and high in safety.

A door lock according to an embodiment of the present invention includes:

a lock body;

the lock bolt assembly is slidably arranged on the lock body;

the transmission assembly comprises an installation shaft, a first gear piece, a first transmission plate, a second transmission plate, a first pivot and a second pivot, the installation shaft is arranged on the lock body, the first gear piece and the first transmission plate are both rotatably arranged on the installation shaft, an arc-shaped chute is formed in the first transmission plate, a linkage column located 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.

According to the door lock disclosed by the embodiment of the invention, at least the following technical effects are achieved: when the lock is locked, 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 matching 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 bolt assembly is limited from moving towards the inside of the lock body; during the unblock, first drive arrangement drives first gear spare antiport, and first transmission board and second transmission board rotate, drive spring bolt subassembly and move towards the lock body is inside, and transmission safe and reliable just avoids wrong unblock action.

According to some embodiments of the present invention, the first driving device includes a second gear member, a lock core assembly, and a first dial block, the second gear member is rotatably disposed on the lock body, the second gear member is engaged with the first gear member, the second gear member is annular, the lock core assembly is located in a middle portion of the second gear member, a convex portion facing the lock core assembly is disposed on an inner wall of the second gear member, and the first dial block is disposed on the lock core assembly and is engaged with the convex portion. Be provided with second gear and lock benevolence device, the cooperation of first stirring piece and convex part, it is convenient to install, compact structure has further improved the life of lock.

According to some embodiments of the invention, at least two limiting plates are mounted on the lock body, and at least two limiting plates are arranged around the second gear member;

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

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

the second driving device comprises a gearbox, a driving motor and a third gear piece, 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. Be provided with this second drive arrangement, third gear spare, second gear spare gearbox and driving motor cooperation make driving motor direct control spring bolt subassembly, and it is convenient not only to unblock and lock, still need not rotate handle control spring bolt subassembly through the staff and remove, has still reduced the volume of lock simultaneously.

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 of 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 convenient to control, and the disassembly, assembly, maintenance and replacement are convenient.

According to some embodiments of the present invention, a square shaft shift lever is rotatably disposed on the lock body, a first finger and a second finger linked with the square shaft shift lever are sleeved on the square shaft shift lever, the first finger is engaged with the first gear member, and the second finger is engaged with the first gear member and the second gear member. When this lock was installed in the door, be provided with first pusher dog and second pusher dog, can realize the lock unblock through rotating the square axis driving lever.

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

the first pusher dog is provided with a first mounting through hole, the side wall of the first mounting through hole is provided with a first limiting notch in linkage fit with the protrusion, the second pusher dog is provided with a second mounting through hole, the square shaft deflector rod penetrates through the first mounting through hole and the second mounting through hole, and the second pusher dog is sleeved on the step.

According to some embodiments of the present invention, a second toggle block linked with the first gear is sleeved on the mounting shaft, and the second toggle block has a toggle portion;

the lock body is provided with a latch bolt assembly, and the latch bolt assembly is provided with a forward stopping surface; the square shaft shifting rod is sleeved with a first shifting piece matched with the stop surface, the first shifting piece is provided with a transmission part facing the second shifting block, the transmission part is matched with the shifting part, the first gear piece drives the second shifting block to rotate, the shifting part on the second shifting block pushes the transmission part, then the first shifting piece is abutted against the stop surface, the latch bolt assembly is driven to move towards the inside of the lock body, and transmission is safe and reliable.

According to some embodiments of the invention, the square shaft deflector rod is sleeved with a second deflector piece matched with the stop surface, the second deflector piece is provided with a second limit notch matched with the protrusion in a linkage manner, when the square shaft deflector rod rotates, the second deflector piece is driven to enable the second deflector piece to abut against the stop surface, the latch bolt assembly is driven to move towards the inside of the lock body, the transmission is reliable, and the double-safety effect is achieved.

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

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

the transmission structure is arranged on the top and bottom hook, and the lock tongue component can drive the top and bottom hook to move 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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

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

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

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

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

FIG. 6 is a schematic structural diagram of a first embodiment of the driving device;

FIG. 7 is a schematic structural diagram of a second embodiment of a driving device;

FIG. 8 is a schematic structural diagram 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;

bolt assembly 20, bolt 21, lock plate 22;

the transmission assembly 30, the mounting shaft 31, the first gear member 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 part 371;

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

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

the square shaft shifting rod 60, the step 61, the protrusion 62, the first shifting claw 63, the first mounting through hole 631, the first limiting notch 6311, the second mounting through hole 641 of the second shifting claw 64, the first shifting piece 65, the transmission part 651, the second shifting piece 66 and the second limiting notch 661;

the latch bolt component 70, the latch bolt block 71, the push rod 72 and the guide plate 73;

a top-bottom hook 81, a guide groove 82, a guide 83, a transmission groove 84, and a transmission member 85.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in fig. 1, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element 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 several, multiple, greater than, less than, exceeding, etc. occur, several means are one or more, several means are two or more, greater than, less than, exceeding, etc. are understood as excluding the essential numbers, and greater than, less than, within, etc. are understood as including the essential numbers. If the first and the third are described for the purpose of distinguishing technical features, the description is not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Referring to fig. 1, a door lock according to an embodiment of the present invention includes a lock body 10, where the lock body 10 includes a first lock case 11, a second lock case 12, and a mounting plate 13, and the first lock case 11, the second lock case 12, and the mounting plate 13 are detachably connected to each other, so as to assemble the lock body 10 with a mounting cavity, which is convenient to assemble.

Referring to fig. 2 to 6, in the embodiment of the present invention, the locking bolt assembly 20, the transmission assembly 30 and the first driving device 40 are further included.

The locking bolt 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, the first transmission plate 33 is provided with an arc-shaped chute 331, the first gear member 32 is provided with a linkage post 321 located in the chute 331, 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 locking bolt 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 transmission engagement with the first gear member 32;

when the linkage column 321 is located at one end of the sliding slot 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 lock plate 22 connected to the latch bolt 21, the other end of the second transmission plate 34 is pivoted to the lock plate 22 through a second pivot 36, and the lock plate 22 is in an L-shaped structure.

According to the door lock of the embodiment of the present invention, during locking, 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 linking column 321 and the sliding slot 331, so that the second transmission plate 34 rotates. When the axis of the second pivot shaft 36, the axis of the first pivot shaft 35 and the axis of the mounting shaft 31 are coplanar, i.e., in a dead-center state, the movement of the locking bolt assembly 20 toward the inside of the lock body 10 is limited; during unlocking, the first driving device 40 drives the first gear member 32 to rotate in the opposite direction, and the first transmission plate 33 and the second transmission plate 34 rotate to drive the locking bolt assembly 20 to move towards the inside of the lock body 10, so that the transmission is safe and reliable, and wrong unlocking actions are avoided.

Referring to fig. 2 to 4 and 6, in the embodiment of the present invention, the first driving device 40 includes a second gear 41, a lock core assembly 42 and a first dial 43, the second gear 41 is rotatably disposed on the lock body 10, the second gear 41 is engaged with the first gear 32, the second gear 41 is annular, the lock core assembly 42 is located in the middle of the second gear 41, the inner wall of the second gear 41 has a protrusion 411 facing the lock core assembly 42, and the lock core assembly 42 has the first dial 43 engaged with the protrusion 411. The second gear piece 41 and the lock core device are arranged, the first poking block 43 is matched with the convex portion 411, the installation is convenient and fast, 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 plates 45 are installed on the lock body 10, and the three limiting plates 45 are disposed around the second gear member 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, the second gear 41 is positioned in the clamping space and can rotate relative to the clamping space, so that the second gear 41 can rotate relative to the lock body 10, the relative position of the second gear 41 is limited, the transmission is reliable, and the assembly efficiency is high.

It should be understood that the above-mentioned limiting plate 45 is detachably connected to the lock body 10 by a fastening member such as a screw; in some embodiments, two limiting plates 45 may be provided, and the two limiting plates 45 are disposed symmetrically with respect to the center of the second gear 41; of course, the number of the limiting pieces 45 is also set to be more than four, 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 the rotation of the lock core assembly causes the toggle gear to rotate, which in turn rotates the first gear member 32.

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

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 53, the second gear 41, the gearbox 51 and the driving motor 52 are arranged to be matched, so that the driving motor 52 directly controls the latch bolt assembly 20, the unlocking and the locking are convenient and fast, the latch bolt assembly 20 does not need 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, as shown in fig. 2 to fig. 4, in the embodiment of the present invention, an opening 131 is formed on the mounting plate 13 of the lock body 10, a control module 54 is detachably connected to a position corresponding to the opening 131 in the lock body 10 through a fastening member such as a screw or a pin, and the control module 54 is electrically connected to the second driving device 50, so that not only the operation of the second driving device 50 is 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 shift lever 60 is rotatably disposed on the lock body 10, a first finger 63 and a second finger 64 coupled to the square shaft shift lever 60 are sleeved on the square shaft shift lever 60, the first finger 63 is engaged with the first gear 32, and the second finger 64 is engaged with the first gear 32 and the second gear 41. When the door lock is installed in a door, the first shifting claw 63 and the second shifting claw 64 are arranged, and the door lock can be unlocked by rotating the square shaft shifting lever 60.

It is understood 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;

first installation through-hole 631 has been seted up on first pusher dog 63, and the first spacing breach 6311 of linkage complex with protruding 62 has been seted up to the lateral wall of first installation through-hole 631, has seted up second installation through-hole 641 on the second pusher dog 64, and first installation through-hole 631 and second installation through-hole 641 are worn to locate by square shaft driving lever 60, and second pusher dog 64 cup joints on step 61, and structural design is reasonable, and the transmission is reliable.

Referring to fig. 2 to 4, 6 and 8, in the embodiment of the present invention, a second toggle block 37 linked with the first gear 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 shifting lever 60 is sleeved with a first shifting piece 65 matched with the stop surface, a transmission part 651 arranged towards the second shifting block 37 is arranged on the first shifting piece 65, the transmission part 651 is matched with the shifting part 371, the first gear piece 32 drives the second shifting block 37 to rotate, the shifting part 371 on the second shifting block 37 pushes the transmission part 651, then the first shifting piece 65 abuts against the stop surface, and the latch bolt assembly 70 is driven to move towards the inside of the lock body 10, so that the transmission is safe and reliable.

The square shaft shifting lever 60 is sleeved with a second shifting piece 66 matched with the stop surface, the second shifting piece 66 is provided with a second limiting notch 661 matched with the protrusion 62 in a linkage mode, when the square shaft shifting lever 60 rotates, the second shifting piece 66 is driven to enable the second shifting piece 66 to abut against the stop surface, the latch bolt assembly 70 is driven to move towards the inside of the lock body 10, transmission is reliable, and the double-insurance effect is achieved.

It should be noted that the latch bolt assembly 70 includes a latch bolt block 71, a push rod 72 pushing the latch bolt block 71 to extend out of the lock body 10, and a guide plate 73 disposed on the push rod 72, the latch bolt block 71, the push rod 72, and the guide plate 73 are fixedly connected, and the stop surface is located on the guide plate 73; first plectrum 65 and second plectrum 66 are located the both sides of push rod 72 pole respectively for deflector 73 both ends can both receive stirring of first plectrum 65 and second plectrum 66, when the unblock, have played the effect of dual fail-safe, improve latch bolt subassembly 70 moving smoothness nature, and can prevent that the door 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 bolt assembly 70 to return is disposed between the guiding 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 convex column.

Referring to fig. 1 to 4, in the embodiment of the present invention, the lock body 10 is further provided with a hook body structure, the hook body structure includes a top-bottom hook 81 and a transmission structure, the top-bottom hook 81 is movably disposed on the lock body 10, the lock body 10 is provided with a guide structure engaged with the top-bottom hook 81, the transmission structure is disposed 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 guiding structure includes a guiding groove 82 and a guiding member 83, the guiding groove 82 is disposed on the top-bottom hook 81, the guiding member 83 is disposed on the lock body 10, and the guiding member 83 extends into the guiding groove 82 to guide the top-bottom hook 81 when it is actuated.

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

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit 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 deadbolt assembly (20), the deadbolt assembly (20) slidably disposed on the lock body (10);

a transmission assembly (30), the transmission assembly (30) including a mounting shaft (31), a first gear member (32), a first transmission plate (33), a second transmission plate (34), a first pivot shaft (35), and a second pivot shaft (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), and the first transmission plate (33) is provided with an arc chute (331), the first gear piece (32) is provided with a linkage column (321) positioned in the sliding groove (331), one end of the second transmission plate (34) is pivoted on the first transmission plate (33) through the first pivot (35), the other end of the second transmission plate (34) is pivoted on the bolt assembly (20) through the second pivot (36);

a first driving device (40) arranged on the lock body (10), wherein the first driving device (40) is in transmission engagement with the first gear piece (32);

when the linkage column (321) is positioned at one end of the sliding groove (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.

2. The door lock according to claim 1, wherein: first drive arrangement (40) include second gear (41), lock benevolence subassembly (42) and first stirring piece (43), second gear (41) rotationally set up in on lock body (10), second gear (41) mesh in first gear (32), second gear (41) are cyclic annular, lock benevolence subassembly (42) are located the middle part of second gear (41), have on second gear (41) towards convex part (411) that lock benevolence subassembly (42) set up, be provided with on lock benevolence subassembly (42) with convex part (411) complex first stirring piece (43).

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

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

4. The door lock according to claim 3, 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).

5. The door lock according to claim 4, 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 fastening piece, and the control module (54) is electrically connected with the driving motor (52).

6. The door lock according to claim 3 or 5, wherein: the lock body (10) is rotatably provided with a square shaft shifting lever (60), a first shifting claw (63) and a second shifting claw (64) which are linked with the square shaft shifting lever (60) are sleeved on the square shaft shifting lever (60), the first shifting claw (63) is meshed with the first gear piece (32), and the second shifting claw (64) is meshed with the first gear piece (32) and the second gear piece (41).

7. The door lock of claim 6, 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);

seted up first installation through-hole (631) on first pusher dog (63), the lateral wall of first installation through-hole (631) seted up with protruding (62) linkage complex first spacing breach (6311), second installation through-hole (641) have been seted up on second pusher dog (64), square shaft driving lever (60) are worn to locate first installation through-hole (631) with second installation through-hole (641), second pusher dog (64) cup joint in on step (61).

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

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 shifting rod (60) is sleeved with a first shifting piece (65) matched with the stop surface, a transmission part (651) facing the second shifting block (37) is arranged on the first shifting piece (65), and the transmission part (651) is matched with the shifting part (371).

9. The door lock of claim 8, wherein: and a second shifting piece (66) matched with the stop surface is sleeved on the square shaft shifting rod (60), and a second limiting notch (661) in linkage fit with the protrusion (62) is formed in the second shifting piece (66).

10. The door lock according to claim 1, wherein: still be provided with the coupler body structure on lock body (10), the coupler body structure includes:

the lock body (10) is provided with a guide structure matched with the top and bottom hook (81);

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