CN214835518U

CN214835518U - Mechanical door lock

Info

Publication number: CN214835518U
Application number: CN202023250675.1U
Authority: CN
Inventors: 胡淳龙
Original assignee: Zhongshan Longshang Metal Products Co ltd
Current assignee: Zhongshan Longshang Metal Products Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-23
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a mechanical door lock, which comprises a lock shell, a first handle, a second handle, a spring bolt mechanism connected with the lock shell, a lock core and a toggle assembly, wherein the lock core is connected with the spring bolt mechanism and can drive the spring bolt mechanism to move, the toggle assembly comprises a connecting seat, a first toggle piece and a second toggle piece which are rotatably connected with the connecting seat, a first connecting hole and a first connecting piece are arranged on the lock shell, the first connecting piece penetrates through the first connecting hole and is used for being connected with the connecting seat, the position of the first connecting piece on the first connecting hole or the position of the connecting seat can be adjusted so as to change the position of the toggle assembly connected with the lock shell, a first extending part and a second extending part which can be connected with the spring bolt mechanism are correspondingly arranged on the first toggle piece and the second toggle piece respectively, the first handle and the second handle are respectively connected with the first toggle piece and the second toggle piece and can drive the first toggle piece and the second toggle piece to rotate and drive the spring bolt mechanism to move respectively, it can be convenient for production installation, and adaptability is better.

Description

Mechanical door lock

Technical Field

The utility model relates to a tool to lock technical field, in particular to mechanical door lock.

Background

The existing mechanical door lock generally comprises a lock shell, a lock tongue, a handle, a lock cylinder, a toggle piece and other parts, wherein the toggle piece is connected with the lock tongue, the lock cylinder is arranged on the lock shell and can be connected with the lock tongue through an internal transmission structure, the lock cylinder can extend or retract the lock tongue relative to the lock shell through the internal transmission structure, and the handle is connected with the toggle piece and can extend or retract the lock tongue relative to the lock shell through rotating the toggle piece. Because the specific size of mechanical door lock of different models is different, generally speaking, the distance between the rotation axis of the poking piece and the rotation axis of the lock cylinder can also change according to the difference of the model, and the distance between the handle and the lock cylinder can have different sizes according to the difference of the model, and when the mechanical door lock is produced and installed, generally, installation hole sites which can correspond to the lock cylinder and the handle are required to be arranged on the panel and the door body, so that the lock cylinder and the lock rod on the handle can penetrate through, the position deviation of the hole sites easily influences the production and installation of the mechanical door lock, the position accuracy requirement of the hole sites is higher, thus, the production difficulty and the installation difficulty are increased, meanwhile, the production cost is also increased, and when the mechanical door lock is replaced by a user, the model of the door lock which can be used is also fixed, and the adaptability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a mechanical door lock, its simple structure is reasonable, stirs the rotation axis of subassembly and the rotation axis of lock core between the connection cooperation between first connecting piece of distance accessible and the first connecting hole and adjusts, can facilitate the production installation, adaptability is better.

According to the embodiment of the utility model, the mechanical door lock comprises a lock shell, a spring bolt mechanism, a lock core, a toggle assembly, a first handle and a second handle, wherein the spring bolt mechanism is arranged in the lock shell and is used for locking a door body; the lock core is fixedly connected with the lock shell and connected with the bolt mechanism, and the lock core can drive the bolt mechanism to act; the shifting assembly comprises a connecting seat, a first shifting piece and a second shifting piece, the first shifting piece and the second shifting piece can be rotatably connected to the connecting seat, a first connecting hole and a first connecting piece are arranged on the lock shell, the first connecting piece penetrates through the first connecting hole and is used for being connected with the connecting seat, the position of the first connecting piece in the first connecting hole can be adjusted or the position of the first connecting piece in the connecting seat can be adjusted, so that the position of the shifting assembly connected to the lock shell can be changed; the first handle and the second handle are respectively positioned on two sides of the lock shell, a first extending portion capable of being connected with the lock tongue mechanism is arranged on the first toggle piece, a second extending portion capable of being connected with the lock tongue mechanism is arranged on the second toggle piece, the first handle is connected with the first toggle piece and can drive the first toggle piece to rotate, the first toggle piece can drive the lock tongue mechanism to move through the first extending portion, the second handle is connected with the second toggle piece and can drive the first toggle piece to rotate, and the first toggle piece can drive the lock tongue mechanism to move through the first extending portion.

According to the utility model discloses mechanical lock, it has following beneficial effect at least: during installation, the position of the connecting seat connected to the lock shell can be adjusted and changed by adjusting the position of the first connecting piece in the first connecting hole or the position of the first connecting piece in the connecting seat, so that the distance between the rotating axis of the toggle assembly and the rotating axis of the lock cylinder can be adjusted, corresponding installation hole positions can be conveniently formed on the panel and the door body, the door body can be suitable for installation hole sizes of different types, and the adaptability is good; and, be equipped with first extension on the first stirring piece, be equipped with the second extension on the second stirring piece, first extension and second extension homoenergetic are connected with spring bolt mechanism and all can order about the action of spring bolt mechanism, when adjusting the position of connecting seat on the lock shell, the position of first stirring piece and first stirring piece is adjusted thereupon and is changed, through setting up first extension and second extension to the feasible subassembly of stirring can keep with the spring bolt mechanism between the linkage, can keep the normal use of mechanical door lock, and simple structure is reasonable, conveniently stirs the regulation use of subassembly position.

According to some embodiments of the present invention, the first connecting hole is a waist-shaped hole, so that the first connecting member is adjustable in the position of the first connecting hole, the first connecting hole is provided with a plurality of limiting concave positions, and the part of the first connecting member can be clamped into the limiting concave positions.

According to some embodiments of the present invention, the latch bolt mechanism includes a first latch bolt assembly and a second latch bolt assembly, the first latch bolt assembly is slidably disposed in the lock housing, a first elastic member is connected between the first latch bolt assembly and the lock housing, the first extension portion and the second extension portion can both abut against the first latch bolt assembly, the first extension portion and the second extension portion can respectively push the first latch bolt assembly to move and retract relative to the lock housing, and the first latch bolt assembly can move and extend relative to the lock housing under the action of the first elastic member; the second spring bolt assembly is arranged in the lock shell in a sliding mode, a poking piece is arranged in the lock shell in a rotating mode, the lock cylinder can drive the poking piece to rotate, and the poking piece can poke the second spring bolt assembly to move out or retract relative to the lock shell.

According to the utility model discloses a some embodiments, be connected with the anti-knob that locks on dialling the piece, the anti-knob that locks with the first in command is located lock shell with one side, the anti-knob that locks can order about dial the piece and rotate.

According to some embodiments of the utility model, be equipped with spacing shell fragment in the lock shell, be equipped with spacing step on the piece of stirring, spacing step is "V" type structure that has the contained angle, just the angle of spacing step with stir complementally between the piece can the pivoted angle, spacing shell fragment can keep the butt in spacing step, spacing shell fragment can deform.

According to some embodiments of the present invention, the latch mechanism further comprises a safety assembly, the safety assembly comprises a safety latch, a fixing member and a locking member, the fixing member is fixedly connected to the lock case, the safety latch is slidably connected to the fixing member, and the locking member is movably connected to the fixing member; the first bolt component comprises a first bolt piece, a second connecting piece and a third connecting piece, the first bolt piece is fixedly connected with the second connecting piece, the second connecting piece is connected with the first elastic piece, the third connecting piece is connected on the second connecting piece in a sliding mode, a second elastic piece is connected between the third connecting piece and the second connecting piece, the third connecting piece can be abutted to the first extending part and the second extending part respectively, the locking piece can move relative to the fixing piece and can limit the movement retraction of the second connecting piece, the safety bolt can move relative to the lock shell and extend out to limit the movement of the locking piece, the safety bolt can move relative to the lock shell and retract to release the limit of the locking piece, and the third connecting piece can abut against and push the locking piece, so that the locking piece moves and resets, the third connecting piece can drive the second connecting piece to move, and the third connecting piece can move and reset under the effect of the second elastic piece.

According to some embodiments of the present invention, a third elastic member is connected between the safety lock tongue and the fixing member, a fourth elastic member is connected between the locking member and the fixing member, the safety lock tongue is provided with a first limiting portion for limiting the movement of the locking member, and the locking member is provided with a first abutting portion; the safety lock bolt is characterized in that a second limiting part is arranged on the second connecting piece, a second abutting part capable of abutting against the first abutting part is arranged on the third connecting piece, the safety lock bolt can extend out of the lock shell under the action of the third elastic piece to enable the first limiting part to abut against the locking piece, the locking piece can move upwards to the moving path of the second limiting part relative to the fixing piece under the action of the fourth elastic piece, the locking piece can abut against the second limiting part to block the first lock bolt to retract, and the first abutting part can abut against the second abutting part to enable the third connecting piece to abut against and push the locking piece to move downwards for resetting.

According to some embodiments of the utility model, be equipped with the confession on the locking piece the spacing groove that first spacing portion card was gone into, be equipped with first direction inclined plane in the first spacing portion, spacing groove department be equipped with can with first direction inclined plane complex second direction inclined plane, first be equipped with the third direction inclined plane in the portion of pushing away, the second is supported to be equipped with in the portion of pushing away can with third direction inclined plane complex fourth direction inclined plane.

According to some embodiments of the present invention, the second spring bolt assembly includes a second spring bolt and a fourth connecting member fixedly connected to the second spring bolt, the fourth connecting member is slidably connected to the lock housing, the toggle member is movably connected to the fourth connecting member, and the toggle member can drive the fourth connecting member to move so as to extend or retract the second spring bolt relative to the lock housing; the third connecting piece is provided with a pushing step and a third extending part, the third connecting piece is movably connected with a pushing column, a clutch component is connected between the fourth connecting piece and the pushing column, the first extending part can be in butt linkage with the pushing step, so that the first poking sheet can push the third connecting piece to move, the second extending part can be in butt linkage with the push column, so that the second toggle piece can push the third connecting piece to move, the third extending part can be abutted against the toggle piece, the third connecting piece can drive the toggle piece to rotate through the third extending part, and the second bolt piece retracts relative to the lock shell, when the second bolt piece extends relative to the lock shell, the fourth connecting piece can enable the pushing column and the second extending portion to be decoupled through the clutch component.

According to some embodiments of the present invention, the clutch assembly includes a first clutch member and a second clutch member, the first clutch member is rotatably connected to the lock housing, one end of the first clutch member is movably connected to the fourth connecting member, the second clutch member is slidably connected to the third connecting member, a fifth elastic member is connected between the second clutch member and the third connecting member, the second clutch member is provided with a recess and a fifth guiding inclined plane located in the recess, the third connecting member is provided with a second connecting hole, the pushing column is provided with a third pushing portion and a guiding portion, the third pushing portion penetrates through the second connecting hole and can extend out from the second connecting hole, a sixth elastic member is connected between the third connecting member and the pushing column, the guiding portion can be inserted into the recess and is provided with a sixth guiding inclined plane capable of being matched with the fifth guiding inclined plane, the second extending part can be in butt linkage with the third abutting part so that the second toggle piece can abut against and push the third connecting piece to move, the fourth connecting piece can drive the first clutch piece to rotate, the first clutch piece can abut against and push the second clutch piece to move, the avoidance concave position moves to a position corresponding to the guide part, the guide part can be inserted into the avoidance concave position under the action of the sixth elastic piece so that the third abutting part retracts into the second connecting hole, the second clutch piece can move and reset under the action of the fifth elastic piece and can abut against and push the abutting column to move through the matching between the fifth guide inclined surface and the sixth guide inclined surface so that the third abutting part can extend out of the second connecting hole.

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 a schematic structural diagram of a mechanical door lock according to an embodiment of the present invention;

FIG. 2 is a schematic view of a back side portion of the mechanical door latch of FIG. 1;

FIG. 3 is one of the schematic cross-sectional structural views of the mechanical door lock of FIG. 1;

FIG. 4 is a second schematic cross-sectional view of the mechanical door lock of FIG. 1;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic cross-sectional view of the mechanical door lock of FIG. 5 in a locked state;

FIG. 7 is a schematic front view of a portion of the mechanical door latch of FIG. 1;

FIG. 8 is an exploded view of the mechanical door latch of FIG. 7;

FIG. 9 is a schematic view of the back side of the mechanical door latch of FIG. 7;

FIG. 10 is a schematic view of the mechanical door lock of FIG. 7 in a locked position;

FIG. 11 is a schematic view of the back side of the mechanical door latch of FIG. 10;

FIG. 12 is an exploded view of the safety assembly of FIG. 7;

FIG. 13 is a schematic structural view of the first latch assembly of FIG. 7;

fig. 14 is an exploded view of the first latch assembly of fig. 13.

Reference numerals:

the lock comprises a lock shell 100, a first connecting hole 110, a limiting concave position 111, a first connecting piece 120, a first elastic piece 130, a toggle piece 140, an anti-locking knob 141, a limiting step 142, a toggle column 143 and a limiting elastic piece 150;

the first tongue locking assembly 200, the first tongue locking piece 210, the second connecting piece 220, the second limiting part 221, the avoiding groove 222, the third connecting piece 230, the second abutting part 231, the fourth guiding inclined surface 232, the abutting step 233, the third extending part 234, the abutting column 235, the second connecting hole 236, the third abutting part 237, the guiding part 238, the sixth guiding inclined surface 239, the second elastic piece 240 and the sixth elastic piece 250;

a second latch bolt assembly 300, a second latch bolt piece 310, a fourth connecting piece 320, and a third connecting hole 321;

the safety device comprises a safety component 400, a safety lock tongue 410, a first limit part 411, a first guide inclined plane 412, a fixing part 420, a locking part 430, a first pushing part 431, a limit groove 432, a second guide inclined plane 433, a third guide inclined plane 434, a third elastic part 440 and a fourth elastic part 450;

a lock cylinder 500, a third tumbler 510;

the toggle assembly 600, the connecting seat 610, the fourth connecting hole 611, the first toggle piece 620, the first extending portion 621, the second toggle piece 630 and the second extending portion 631;

a first handle 700, a first lock lever 710;

a second handle 800, a second lock lever 810;

the clutch assembly 900, the first clutch member 910, the second clutch member 920, the escape recess 921, the fifth guide slope 922, and the fifth elastic member 930.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions or positional relationships indicated by the upper, lower, front, rear, left, right, etc. are the directions or positional relationships shown on the drawings, it is only for convenience of description and simplification of description, but it is not intended to 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 there are several, greater than, less than, exceeding, above, below, within, etc., the terms, wherein several means are one or more, and several means are two or more, and greater than, less than, exceeding, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

If the first and second are described for the purpose of distinguishing technical features, they are not to be understood 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 description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, 2, 7 and 8, a mechanical door lock includes a lock case 100, a latch mechanism disposed in the lock case 100, a lock cylinder 500, a toggle assembly 600, a first handle 700 and a second handle 800, the latch mechanism being used to lock a door body; the lock cylinder 500 is fixedly connected to the lock shell 100 and connected with the latch mechanism, and the lock cylinder 500 can drive the latch mechanism to act; the toggle assembly 600 comprises a connecting seat 610, a first toggle piece 620 and a second toggle piece 630, the first toggle piece 620 and the second toggle piece 630 can be rotatably connected to the connecting seat 610, a first connecting hole 110 and a first connecting piece 120 are arranged on the lock shell 100, the first connecting piece 120 penetrates through the first connecting hole 110 and is used for being connected with the connecting seat 610, the position of the first connecting piece 120 in the first connecting hole 110 can be adjusted or the position of the first connecting piece 120 in the connecting seat 610 can be adjusted, so that the position of the toggle assembly 600 connected to the lock shell 100 can be changed; the first handle 700 and the second handle 800 are respectively located at two sides of the lock case 100, the first toggle piece 620 is provided with a first extending portion 621 capable of being connected with the latch bolt mechanism, the second toggle piece 630 is provided with a second extending portion 631 capable of being connected with the latch bolt mechanism, the first handle 700 is connected with the first toggle piece 620 and can drive the first toggle piece 620 to rotate, the first toggle piece 620 can drive the latch bolt mechanism to move through the first extending portion 621, the second handle 800 is connected with the second toggle piece 630 and can drive the first toggle piece 620 to rotate, and the first toggle piece 620 can drive the latch bolt mechanism to move through the first extending portion 621.

It can be understood that, as shown in fig. 2, 3, 7 and 9, the first connection hole 110 is disposed on the lock case 100, the fourth connection hole 611 is disposed on the connection seat 610, the first connection member 120 passes through the first connection hole 110 and is inserted into the fourth connection hole 611, so as to connect the lock case 100 with the connection seat 610, the first toggle piece 620 and the second toggle piece 630 are both rotatably connected to the connection seat 610, and a first extension 621 and a second extension 631 extending and extending towards the latch mechanism are respectively disposed thereon, the first extension 621 and the second extension 631 can both be connected to and driven by the latch mechanism, so that when the connection position of the connection seat 610 is adjusted, the first toggle piece 620 and the second toggle piece 630 can still keep linking with the lock rod of the latch mechanism, the first handle 700 is connected to the first lock rod 710, the second handle 800 is connected to the second handle 810, the first lock rod 710 is connected to the first toggle piece 620, the second lock lever 810 is connected to the second pulling plate 630, so that the two handles can respectively drive the corresponding pulling plates to rotate.

During installation, the lock cylinder 500 is fixedly installed on the lock shell 100, the position of the connecting seat 610 connected to the lock shell 100 can be adjusted and changed by adjusting the position of the first connecting piece 120 in the first connecting hole 110 or the position of the first connecting piece 120 in the connecting seat 610, so that the positions of the first toggle piece 620 and the second toggle piece 630 can be adjusted, the distance between the rotating axis of the toggle assembly 600 and the rotating axis of the lock cylinder 500 can be adjusted, the two handles are respectively connected with the corresponding toggle pieces, the distance between the rotating axis of the handles and the rotating axis of the lock cylinder 500 can be adjusted, installation hole positions corresponding to the handles and the lock cylinder 500 can be conveniently arranged on a panel and a door body, the lock cylinder is suitable for installation hole sizes of different types, and the adaptability is good; and, be equipped with first extension 621 on the first stirring piece 620, be equipped with second extension 631 on the second stirring piece 630, first extension 621 and second extension 631 all can be connected with the spring bolt mechanism and all can order about the spring bolt mechanism action, when adjusting the position of connecting seat 610 on lock shell 100, the position of first stirring piece 620 and first stirring piece 620 adjusts the change thereupon, through setting up first extension 621 and second extension 631, thereby make stir subassembly 600 can keep and the spring bolt mechanism between the linkage, can keep the normal use of mechanical door lock, simple structure is reasonable, conveniently stir the regulation use of subassembly 600 position.

In practical applications, the adjustment of the position of the toggle assembly 600 connected to the lock housing 100 can be achieved by adjusting the position of the first connecting member 120 in the first connecting hole 110 or adjusting the position of the first connecting member 120 in the connecting seat 610, and the specific adjustment method will be described in detail below; in order to facilitate the connection between the handle and the lock case 100 and between the lock rod and the toggle assembly 600, the lock case 100 may be correspondingly provided with a clearance structure, such as a hollow structure, a strip-shaped hole, a gourd-shaped hole or a plurality of intersecting and communicating hole sites, so that the positions of the two handles can be changed along with the position adjustment of the toggle assembly 600; the latch bolt mechanism can be set according to actual use conditions, and will not be described in detail herein, and will not be described in detail since the structure of the lock cylinder 500 according to the embodiment of the present invention is known to those skilled in the art.

In some embodiments, the first connection hole 110 is a kidney-shaped hole, so that the position of the first connection element 120 in the first connection hole 110 is adjustable, a plurality of limiting concave positions 111 are disposed at the first connection hole 110, and a portion of the first connection element 120 can be snapped into the limiting concave positions 111.

It can be understood that, as shown in fig. 2, 3 and 9, the first connection hole 110 is a kidney-shaped hole, the first connection member 120 is a screw, two limiting recesses 111 are disposed at the first connection hole 110, and two fourth connection holes 611 are disposed on the connection seat 610. During installation, the first connecting member 120 penetrates through the first connecting hole 110 and is inserted into the fourth connecting hole 611 to be in threaded connection with the connecting seat 610, when the shifting assembly 600 is adjusted to be located at the connecting position of the lock case 100, the first connecting member 120 is adjusted along the upper and lower adjusting positions of the first connecting hole 110 to enable the first connecting member 120 to move between the two limiting concave positions 111 in an adjusting manner, and when the first connecting member 120 is inserted into the fourth connecting hole 611, part of the first connecting member 120 is clamped into the limiting concave positions 111 to fix the position of the first connecting member 120, so that the stability is improved.

In practical application, the first connecting hole 110 may also be another strip-shaped hole structure, such as a gourd-shaped hole or a plurality of intersecting and communicating hole structures, to adjust the position of the first connecting member 120 in the first connecting hole 110, or the connecting seat 610 is provided with a plurality of fourth connecting holes 611, by changing the connection between the first connecting member 120 and the different fourth connecting holes 611, the position of the first connecting member 120 in the connecting seat 610 is adjusted, and finally, the position of the toggle assembly 600 connected to the lock housing 100 is adjusted; besides the screw, the first connecting member 120 may also be a pin, which can be inserted into the fourth connecting hole 611 and can be clamped into the limiting concave position 111 to realize connection with the connecting seat 610 and position adjustment and fixation, and the first connecting member 120 may also be other special-shaped plug connectors and the like; the number of the limiting concave positions 111 can be three, four or more, so that the positions where the first connecting piece 120 can be fixed are more, the positions where the first connecting piece can be adjusted are more, the adjustable force of the first connecting piece is increased, and the first connecting piece can be set correspondingly according to actual use requirements.

In some embodiments, the latch bolt mechanism includes a first latch bolt assembly 200 and a second latch bolt assembly 300, the first latch bolt assembly 200 is slidably disposed in the lock housing 100, a first elastic member 130 is connected between the first latch bolt assembly 200 and the lock housing 100, both the first extension 621 and the second extension 631 can abut against the first latch bolt assembly 200, the first extension 621 and the second extension 631 can respectively push the first latch bolt assembly 200 to move and retract relative to the lock housing 100, and the first latch bolt assembly 200 can move and extend relative to the lock housing 100 under the action of the first elastic member 130; the second bolt assembly 300 is slidably disposed in the lock housing 100, the toggle member 140 is rotatably disposed in the lock housing 100, the lock cylinder 500 can drive the toggle member 140 to rotate, and the toggle member 140 can toggle the second bolt assembly 300 to move and extend or retract relative to the lock housing 100.

It can be understood that, as shown in fig. 3, fig. 4, fig. 7 and fig. 9, the lock cylinder 500 is connected to the third toggle piece 510, in a normal state, the first tongue assembly 200 moves and extends relative to the lock case 100 under the action of the first elastic member 130, when in use, the first handle 700 drives the first toggle piece 620 to rotate through the first lock bar 710, the first toggle piece 620 pushes the first tongue assembly 200 to move and retract relative to the lock case 100 through the first extending portion 621, so as to release the locking of the first tongue assembly 200 to the door body, or the second handle 800 drives the second toggle piece 630 to rotate through the second lock bar 810, the second toggle piece 630 pushes the first tongue assembly 200 to move and retract relative to the lock case 100 through the second extending portion 631, so as to also release the locking of the first tongue assembly 200 to the door body; the key inserts lock core 500 in order to rotate lock core 500, drives third stirring piece 510 to rotate, and third stirring piece 510 stirs stirring piece 140 and makes it rotate and make it stir second spring bolt subassembly 300 and move relative lock shell 100 and stretch out or retract, realizes the locking or the unblock of second spring bolt subassembly 300 to the door body, and it locks the door body through two spring bolt subassemblies respectively, can improve the reliability to the locking of door body, improves theftproof performance and convenient to use.

In practical applications, the latch mechanism may also be provided with only one latch bolt assembly or a plurality of latch bolt assemblies, which may be changed according to practical use conditions, the specific structures of the first latch bolt assembly 200 and the second latch bolt assembly 300 may also be set accordingly, the lock cylinder 500 may be connected to the direct toggle member 140 to drive the lock cylinder to rotate, and the abutting connection between the first extension portion 621 and the second extension portion 631 and the first latch bolt assembly 200 is described in detail below.

In some embodiments, an anti-lock knob 141 is connected to the toggle member 140, the anti-lock knob 141 and the first handle 700 are located on the same side of the lock case 100, and the anti-lock knob 141 can drive the toggle member 140 to rotate. It can be understood that, as shown in fig. 2 and 3, the back-locking knob 141 is connected to the dial member 140, and the back-locking knob 141 and the first handle 700 are located at the rear side of the lock case 100, i.e. the inner side of the door when in use, so that a user in a room can drive the dial member 140 to rotate through the back-locking knob 141, and the extension and retraction of the second latch bolt assembly 300 are controlled from the inner side of the door, thereby conveniently realizing the back-locking operation in the door, and having a simple structure and convenient use. In practical applications, the specific structure of the back locking knob 141 can be set according to practical needs, and is not limited herein.

In some embodiments, the lock case 100 is provided with a limiting elastic sheet 150 therein, the toggle member 140 is provided with a limiting step 142 thereon, the limiting step 142 is in a V-shaped structure with an included angle, and the angle of the limiting step 142 is complementary to the angle of the toggle member 140, the limiting elastic sheet 150 can be held and abutted against the limiting step 142, and the limiting elastic sheet 150 can be deformed.

It can be understood that, as shown in fig. 8, 9 and 11, the toggle member 140 is provided with a limiting step 142, the limiting step 142 is a V-shaped structure with an included angle, fig. 9 shows that the second latch bolt assembly 300 is in an unlocking retracted state, and the limiting elastic sheet 150 abuts against one side surface of the limiting step 142 to limit the rotation of the toggle member 140; when locking, the toggle member 140 is rotated, the limit step 142 pushes against the limit spring plate 150 to make it deform and avoid, refer to fig. 11, the second bolt assembly 300 is in the locked extended state, after the toggle member 140 rotates, the limit spring plate 150 keeps abutting with the limit step 142 under the action of the elastic force, and abuts against the other side surface of the limit step 142, so as to realize the rotation of the limit toggle member 140, which can be beneficial to avoiding the loosening of the toggle member 140 when in the locked and unlocked states, the use reliability is improved, and the angle of the limit step 142 is complementary with the angle of the toggle member 140, so that the toggle member 140 can abut against the two side surfaces of the limit step 142 better when in two state positions, the stability of abutting between the two side surfaces is improved, and the use is convenient. In practical applications, the limiting elastic sheet 150 may be an elastic metal sheet or made of other elastic materials, and the specific included angle of the limiting step 142 may be set according to the angle that the actual toggle member 140 can rotate, which is not limited herein.

In some embodiments, the latch bolt mechanism further comprises a safety assembly 400, the safety assembly 400 comprises a safety latch bolt 410, a fixing member 420 and a locking member 430, the fixing member 420 is fixedly connected to the lock case 100, the safety latch bolt 410 is slidably connected to the fixing member 420, and the locking member 430 is movably connected to the fixing member 420; the first locking tongue assembly 200 comprises a first locking tongue member 210, a second connecting member 220 and a third connecting member 230, the first locking tongue member 210 and the second connecting member 220 are fixedly connected, the second connecting member 220 is connected with a first elastic member 130, the third connecting member 230 is slidably connected with the second connecting member 220, a second elastic member 240 is connected between the third connecting member 230 and the second connecting member 220, the third connecting member 230 can be respectively abutted against a first extending part 621 and a second extending part 631, the locking member 430 can move relative to the fixing member 420 and can limit the movement retraction of the second connecting member 220, the safety locking tongue 410 can move and extend relative to the lock case 100 to limit the movement of the locking member 430, the safety locking tongue 410 can move and retract relative to the lock case 100 to release the limit of the locking member 430, the third connecting member 230 can abut against the locking member 430 to move and reset the locking member 430, the third connecting member 230 can drive the second connecting member 220 to move, the third link 230 can be moved to be reset by the second elastic member 240.

It can be understood that, as shown in fig. 7 and 9, the safety bolt 410 is in an extended state, and at this time, the door body is in a non-locking state, as shown in fig. 10 and 11, at this time, the door body is in a locking state, the door lock is located at the door frame, the door frame pushes the safety bolt 410 to retract into the lock case 100, and with reference to fig. 8, 12, 13 and 14, when the door body is locked, the door frame pushes the safety bolt 410 to retract into the lock case 100, so as to release the limitation on the locking piece 430, the locking piece 430 moves upward relative to the fixing piece 420 and limits the movement retraction of the second connecting piece 220, at this time, the first bolt 210 cannot retract by pressing, and when the wind in the external environment is strong, it is beneficial to prevent the door body from being pulled by wind to push the door frame to push the first bolt 210 to retract and unlock the door lock, so as to improve the reliability of the door lock and improve the wind-proof performance; when the door body is unlocked, the first handle 700 or the second handle 800 is rotated, the handle drives the corresponding toggle piece to rotate and firstly pushes the third connecting piece 230 through the corresponding extending part, so that the third connecting piece 230 moves relative to the second connecting piece 220 to compress the second elastic piece 240, the third connecting piece 230 moves and pushes the locking piece 430 to move and reset the locking piece 430, and thus the movement limit of the second connecting piece 220 is removed, at the moment, the third connecting piece 230 drives the second connecting piece 220 to move, so that the first latch piece 210 can move back into the lock case 100, and then the third connecting piece 230 moves and resets under the action of the second elastic piece 240, and the locking of the door body is released. In practical applications, the specific structure and connection manner of the locking member 430 can be set according to practical usage requirements, and the specific structures of the safety assembly 400 and the first latch assembly 200 will be described in detail below.

In some embodiments, a third elastic member 440 is connected between the safety lock tongue 410 and the fixing member 420, a fourth elastic member 450 is connected between the locking member 430 and the fixing member 420, the safety lock tongue 410 is provided with a first limiting portion 411 for limiting the movement of the locking member 430, and the locking member 430 is provided with a first abutting portion 431; the second connecting member 220 is provided with a second position-limiting portion 221, the third connecting member 230 is provided with a second abutting portion 231 capable of abutting against the first abutting portion 431, the safety lock tongue 410 can extend out relative to the lock case 100 under the action of the third elastic member 440, so that the first position-limiting portion 411 abuts against the locking member 430, the locking member 430 can move upward relative to the fixing member 420 to a moving path of the second position-limiting portion 221 under the action of the fourth elastic member 450, the locking member 430 can abut against the second position-limiting portion 221, so as to block the movement and retraction of the first lock tongue member 210, and the first abutting portion 431 can abut against the second abutting portion 231, so that the third connecting member 230 can abut against the locking member 430 to move downward for resetting.

It can be understood that, as shown in fig. 9, 11, 12 and 14, when locking, the safety bolt 410 moves to retract into the lock case 100, compressing the fourth elastic member 450 and driving the first position-limiting portion 411 to move to release the abutment between the first position-limiting portion 411 and the locking member 430, and the locking member 430 moves upward to the moving path of the second position-limiting portion 221 relative to the fixing member 420 under the action of the fourth elastic member 450 to block the movement of the second position-limiting portion 221, so as to limit the movement of the second connecting member 220, and thus limit the movement retraction of the second connecting member 220; when unlocking, the third connecting member 230 moves and makes the second abutting portion 231 on the third connecting member abut against the first abutting portion 431, the third connecting member 230 abuts against the locking member 430 by the abutting between the second abutting portion 231 and the first abutting portion 431 to move downwards and reset, the movement of the locking member 430 to the second position-limiting portion 221 is released, so that the second connecting member 220 can move, the third connecting member 230 drives the second connecting member 220 to move through the second elastic member 240 or through other abutting structures, so as to realize the retraction unlocking of the first bolt 210, after the door lock leaves the door frame, the safety bolt 410 is extended out relative to the lock case 100 under the action of the third elastic element 440, to drive the first position-limiting portion 411 to move, so that the first position-limiting portion 411 abuts against the locking element 430, the movement of the locking element 430 is controlled by the first position-limiting portion 411, the wind-proof safety assembly is simple in structure, convenient to install and connect and convenient to achieve the wind-proof effect of the safety assembly 400. In practical applications, the third elastic member 440 and the fourth elastic member 450 can be replaced by a magnetic attraction structure, and the specific matching structure between the first position-limiting portion 411 and the locking member 430 can be set according to actual needs, which will be described in detail below.

In some embodiments, the locking member 430 has a limiting groove 432 for the first limiting portion 411 to be inserted into, the first limiting portion 411 has a first guiding inclined surface 412, the limiting groove 432 has a second guiding inclined surface 433 capable of cooperating with the first guiding inclined surface 412, the first abutting portion 431 has a third guiding inclined surface 434, and the second abutting portion 231 has a fourth guiding inclined surface 232 capable of cooperating with the third guiding inclined surface 434.

It can be understood that, as shown in fig. 9, 11 and 12, when in use, the first limiting portion 411 is clamped in the limiting groove 432 to realize that the first limiting portion 411 limits the movement of the locking member 430, the structure is simple, the connection stability is good, and the first guiding inclined surface 412 and the second guiding inclined surface 433 are matched to form a wedge structure, so that the first limiting portion 411 is clamped in the limiting groove 432 and pushes the locking member 430 to move downwards, and the use is convenient; through the cooperation between the third guiding inclined surface 434 on the first abutting portion 431 and the fourth guiding inclined surface 232 on the second abutting portion 231, a wedge structure is formed, and the first abutting portion 431 abuts against the second abutting portion 231 to move longitudinally through moving transversely, so that the moving and resetting of the locking member 430 are facilitated. In practical applications, the first abutting portion 431 may also abut against the second abutting portion 231 through a magnetic repulsion structure, so as to reset the movement of the locking member 430, and the first limiting portion 411 may also directly abut against the locking member 430, and may be set according to practical needs.

In some embodiments, the second tongue assembly 300 includes a second tongue member 310 and a fourth connecting member 320 fixedly connected to the second tongue member 310, the fourth connecting member 320 is slidably connected to the lock housing 100, the toggle member 140 is movably connected to the fourth connecting member 320, and the toggle member 140 can move the fourth connecting member 320 to extend or retract the second tongue member 310 relative to the lock housing 100; the third connecting member 230 is provided with a pushing step 233 and a third extending portion 234, the third connecting member 230 is movably connected with a pushing column 235, a clutch assembly 900 is connected between the fourth connecting member 320 and the pushing column 235, the first extending portion 621 can be linked with the pushing step 233 in a pushing manner, so that the first toggle sheet 620 can push the third connecting member 230 to move, the second extending portion 631 can be linked with the pushing column 235 in a pushing manner, so that the second toggle sheet 630 can push the third connecting member 230 to move, the third extending portion 234 can be linked with the toggle member 140 in a pushing manner, the third connecting member 230 can drive the toggle member 140 to rotate through the third extending portion 234, so that the second latch member 310 retracts relative to the lock case 100, and when the second latch member 310 extends relative to the lock case 100, the fourth connecting member 320 can release the linkage between the pushing column 235 and the second extending portion 631 through the clutch assembly 900.

It can be understood that, with reference to fig. 7, 9, 10, 11, 13 and 14, a third connecting hole 321 is formed on the fourth connecting member 320, a toggle post 143 is formed on the toggle member 140, the toggle post 143 is movably inserted into the third connecting hole 321, and the toggle member 140 pushes the fourth connecting member 320 to move by the toggle post 143, so that the second latch member 310 moves to extend or retract; the third connecting member 230 is composed of a plurality of pieces, the second connecting member 220 is provided with an avoiding groove 222 for the movement of the second connecting member 220, so as to realize the relative movement between the second connecting member 220 and the third connecting member 230, the first extending portion 621 is in butt linkage with the abutting step 233, so that the first toggle piece 620 can abut against and push the third connecting member 230 to move, and the second extending portion 631 is in butt linkage with the abutting post 235, so that the second toggle piece 630 can abut against and push the third connecting member 230 to move.

When the first latch 210 and the second latch 310 both extend out of the lock case 100 to lock the door body, the fourth connecting member 320 releases the linkage between the pushing post 235 and the second extending portion 631 through the clutch assembly 900, at this time, the first handle 700 is rotated, the third connecting member 230 is driven to move through the abutting linkage of the first extending portion 621 and the pushing step 233, so that the first latch 210 retracts into the lock case 100, in the moving process of the third connecting member 230, the third extending portion 234 can abut against the toggle member 140, the third connecting member 230 can drive the toggle member 140 to rotate through the third extending portion 234, and the second latch 310 retracts relative to the lock case 100, thereby achieving the effect that the two latches can retract simultaneously by rotating the first handle 700 inside the door, facilitating the unlocking of the inside of the door, facilitating the quick unlocking in an emergency, improving the safety in use, and releasing the linkage between the pushing post 235 and the second extending portion 631, the second toggle piece 630 can not rotate to drive the third connecting piece 230 to move, so that the second handle 800 on the outer side of the door idles, the outer side of the door needs to be unlocked through the lock cylinder 500 first, the second bolt piece 310 retracts, the fourth connecting piece 320 moves, and after the linkage between the pushing column 235 and the second extending portion 631 is restored through the clutch assembly 900, the fourth connecting piece can be rotated and unlocked through the second handle 800, and the reliability of the door lock is improved. In practical applications, the specific structure of the clutch assembly 900 can be set according to practical usage requirements, and will not be described in detail herein, and will be described in detail below.

In some embodiments, the clutch assembly 900 includes a first clutch member 910 and a second clutch member 920, the first clutch member 910 is rotatably connected to the lock housing 100, one end of the first clutch member 910 is movably connected to the fourth connecting member 320, the second clutch member 920 is slidably connected to the third connecting member 230, a fifth elastic member 930 is connected between the second clutch member 920 and the third connecting member 230, the second clutch member 920 is provided with an avoiding concave portion 921 and a fifth guiding inclined surface 922 located at the avoiding concave portion 921, the third connecting member 230 is provided with a second connecting hole 236, the pushing column 235 is provided with a third pushing portion 237 and a guiding portion 238, the third pushing portion 237 is inserted through the second connecting hole 236 and can extend out from the second connecting hole 236, a sixth elastic member 250 is connected between the third connecting member 230 and the pushing column 235, the guiding portion 238 can be inserted into the avoiding concave portion 921 and is provided with a sixth guiding inclined surface 239 capable of cooperating with the fifth guiding inclined surface 922, the second extending portion 631 can abut against and link with the third abutting portion 237, so that the second toggle piece 630 can abut against and push the third connecting member 230 to move, the fourth connecting member 320 can drive the first clutch member 910 to rotate, the first clutch member 910 can abut against and push the second clutch member 920 to move, so that the avoiding concave position 921 moves to a position corresponding to the guide portion 238, the guide portion 238 can be inserted into the avoiding concave position 921 under the action of the sixth elastic member 250, so that the third abutting portion 237 retracts into the second connecting hole 236, the second clutch member 920 can move and reset under the action of the fifth elastic member 930, and can abut against and push the push pillar 235 to move through the engagement between the fifth guiding inclined surface 922 and the sixth guiding inclined surface 239, so that the third abutting portion 237 can extend out of the second connecting hole 236.

It can be understood that, with reference to fig. 4, 5, 6, 7, 9, 10, 11 and 14, in a normal state, the first clutch 910 and the second clutch 920 are separated, the guide portion 238 of the pushing cylinder 235 abuts against the second clutch 920 under the action of the sixth elastic member 250, and the third pushing portion 237 extends out of the second connecting hole 236, so that the second extending portion 631 can be in abutting linkage therewith; when the second latch piece 310 moves and extends, the fourth connecting piece 320 drives the first clutch piece 910 to rotate, the first clutch piece 910 pushes the second clutch piece 920 to move, the fifth elastic piece 930 is compressed, the avoiding concave position 921 moves to a position corresponding to the guide portion 238, the guide portion 238 is inserted into the avoiding concave position 921 under the action of the sixth elastic piece 250, so that the third pushing portion 237 retracts into the second connecting hole 236, the second extending portion 631 cannot abut against and link with the third pushing portion 237, and the linkage between the pushing post 235 and the second extending portion 631 is released; when the second latch member 310 retracts into the lock case 100, the fourth connecting member 320 drives the first clutch member 910 to rotate and reset, the first clutch member 910 is separated from the second clutch member 920, the second clutch member 920 moves and resets under the action of the fifth elastic member 930 and can be pushed against the pushing post 235 to move through the cooperation between the fifth guiding inclined surface 922 and the sixth guiding inclined surface 239, so that the third pushing portion 237 can extend out of the second connecting hole 236, and the second extending portion 631 can be pushed against and linked with the pushing post 235 again. The structure is simple and reasonable, the installation and the assembly can be convenient, the linkage clutch control between the pushing column 235 and the second extension part 631 can be realized conveniently, and the use is convenient.

In practical application, besides the first clutch member 910, the clutch assembly 900 may further include a clutch abutting portion disposed on the fourth connecting member 320, the clutch abutting portion moves along with the fourth connecting member 320, and may be fixedly connected to the first connecting member 120, or may be used for abutting the first clutch member 910 to move, so as to realize linkage clutch control between the abutting post 235 and the second extending portion 631, and specific structures of the first clutch member 910 and the second clutch member 920 may be changed according to actual use requirements, which is not limited herein.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A mechanical door lock, comprising:

a lock case (100);

the bolt mechanism is arranged in the lock shell (100) and is used for locking the door body;

the lock cylinder (500) is fixedly connected to the lock shell (100) and is connected with the bolt mechanism, and the lock cylinder (500) can drive the bolt mechanism to act;

the toggle assembly (600) comprises a connecting seat (610), a first toggle piece (620) and a second toggle piece (630), wherein the first toggle piece (620) and the second toggle piece (630) can be rotatably connected to the connecting seat (610), a first connecting hole (110) and a first connecting piece (120) are arranged on the lock shell (100), the first connecting piece (120) penetrates through the first connecting hole (110) and is used for being connected with the connecting seat (610), and the position of the first connecting piece (120) in the first connecting hole (110) can be adjusted or the position of the first connecting piece (120) in the connecting seat (610) can be adjusted, so that the position of the toggle assembly (600) connected to the lock shell (100) can be changed;

a first handle (700) and a second handle (800), the first handle (700) and the second handle (800) being respectively located on both sides of the lock case (100), a first extending part (621) which can be connected with the bolt mechanism is arranged on the first toggle piece (620), a second extending part (631) which can be connected with the bolt mechanism is arranged on the second dial plate (630), the first handle (700) is connected with the first poking sheet (620) and can drive the first poking sheet (620) to rotate, the first toggle piece (620) can drive the bolt mechanism to act through the first extending part (621), the second handle (800) is connected with the second poking sheet (630) and can drive the first poking sheet (620) to rotate, the first toggle piece (620) can drive the bolt mechanism to act through the first extending part (621).

2. The mechanical door lock of claim 1,

first connecting hole (110) are waist type hole to make first connecting piece (120) in the position of first connecting hole (110) is adjustable, first connecting hole (110) department is equipped with a plurality of spacing concave position (111), the part of first connecting piece (120) can be blocked in spacing concave position (111) department.

3. The mechanical door lock of claim 1,

the bolt mechanism comprises a first bolt assembly (200) and a second bolt assembly (300), the first bolt assembly (200) is slidably arranged in the lock shell (100), a first elastic piece (130) is connected between the first bolt assembly (200) and the lock shell (100), both the first extending part (621) and the second extending part (631) can abut against the first bolt assembly (200), the first extending part (621) and the second extending part (631) can respectively abut against the first bolt assembly (200) to move and retract relative to the lock shell (100), and the first bolt assembly (200) can move and extend relative to the lock shell (100) under the action of the first elastic piece (130);

the second bolt assembly (300) is slidably arranged in the lock shell (100), a poking piece (140) is rotatably arranged in the lock shell (100), the lock cylinder (500) can drive the poking piece (140) to rotate, and the poking piece (140) can poke the second bolt assembly (300) to move and extend or retract relative to the lock shell (100).

4. The mechanical door lock of claim 3,

the toggle piece (140) is connected with an anti-lock knob (141), the anti-lock knob (141) and the first handle (700) are located on the same side of the lock shell (100), and the anti-lock knob (141) can drive the toggle piece (140) to rotate.

5. The mechanical door lock of claim 3,

the lock shell is characterized in that a limiting elastic sheet (150) is arranged in the lock shell (100), a limiting step (142) is arranged on the stirring piece (140), the limiting step (142) is of a V-shaped structure with an included angle, the angle of the limiting step (142) is complementary with the angle of the stirring piece (140) which can rotate, the limiting elastic sheet (150) can be abutted against the limiting step (142), and the limiting elastic sheet (150) can deform.

6. The mechanical door lock of claim 3,

the bolt mechanism further comprises a safety assembly (400), the safety assembly (400) comprises a safety bolt (410), a fixing part (420) and a locking piece (430), the fixing part (420) is fixedly connected to the lock case (100), the safety bolt (410) is slidably connected to the fixing part (420), and the locking piece (430) is movably connected to the fixing part (420);

the first bolt assembly (200) comprises a first bolt piece (210), a second connecting piece (220) and a third connecting piece (230), the first bolt piece (210) and the second connecting piece (220) are fixedly connected, the second connecting piece (220) is connected with the first elastic piece (130), the third connecting piece (230) is connected on the second connecting piece (220) in a sliding way, a second elastic piece (240) is connected between the third connecting piece (230) and the second connecting piece (220), the third connecting piece (230) can be respectively abutted against the first extending part (621) and the second extending part (631), the locking piece (430) can move relative to the fixing piece (420) and can limit the movement retraction of the second connecting piece (220), the safety bolt (410) can move relative to the lock shell (100) to extend, the movement of the locking piece (430) is limited, the safety bolt (410) can move and retract relative to the lock shell (100) to remove the limitation on the locking piece (430), the third connecting piece (230) can push against the locking piece (430) to enable the locking piece (430) to move and reset, the third connecting piece (230) can drive the second connecting piece (220) to move, and the third connecting piece (230) can move and reset under the action of the second elastic piece (240).

7. The mechanical door lock of claim 6,

a third elastic piece (440) is connected between the safety lock tongue (410) and the fixing piece (420), a fourth elastic piece (450) is connected between the locking piece (430) and the fixing piece (420), the safety lock tongue (410) is provided with a first limiting part (411) for limiting the movement of the locking piece (430), and the locking piece (430) is provided with a first abutting part (431);

a second limiting part (221) is arranged on the second connecting piece (220), a second pushing part (231) is arranged on the third connecting piece (230), the safety bolt (410) can extend relative to the lock shell (100) under the action of the third elastic piece (440), so that the first limiting part (411) is abutted against the locking piece (430), the locking piece (430) can move upwards to the moving path of the second limiting part (221) relative to the fixing piece (420) under the action of the fourth elastic piece (450), the locking piece (430) can be abutted against the second limiting part (221), so as to block the movement and retraction of the first latch piece (210), the first abutting part (431) can abut against the second abutting part (231), so that the third connecting piece (230) can push the locking piece (430) to move downwards for resetting.

8. The mechanical door lock of claim 7,

be equipped with the confession on locking piece (430) spacing groove (432) that first spacing portion (411) card was gone into, be equipped with first direction inclined plane (412) on first spacing portion (411), spacing groove (432) department is equipped with can with first direction inclined plane (412) complex second direction inclined plane (433), be equipped with third direction inclined plane (434) on first pushing portion (431), the second is equipped with on pushing portion (231) and can lead inclined plane (232) with third direction inclined plane (434) complex fourth.

9. The mechanical door lock of claim 6,

the second bolt assembly (300) comprises a second bolt piece (310) and a fourth connecting piece (320) fixedly connected with the second bolt piece (310), the fourth connecting piece (320) is slidably connected with the lock shell (100), the toggle piece (140) is movably connected with the fourth connecting piece (320), and the toggle piece (140) can drive the fourth connecting piece (320) to move so that the second bolt piece (310) extends or retracts relative to the lock shell (100);

the third connecting piece (230) is provided with a pushing step (233) and a third extending portion (234), the third connecting piece (230) is movably connected with a pushing post (235), a clutch component (900) is connected between the fourth connecting piece (320) and the pushing post (235), the first extending portion (621) can be linked with the pushing step (233) in a pushing mode, so that the first toggle piece (620) can push the third connecting piece (230) to move, the second extending portion (631) can be linked with the pushing post (235) in a pushing mode, so that the second toggle piece (630) can push the third connecting piece (230) to move, the third extending portion (234) can be abutted against the toggle piece (140), and the third connecting piece (230) can drive the toggle piece (140) to rotate through the third extending portion (234), and the second latch piece (310) retracts relative to the lock shell (100), and when the second latch piece (310) extends relative to the lock shell (100), the fourth connecting piece (320) can release the linkage between the pushing column (235) and the second extending part (631) through the clutch component (900).

10. The mechanical door lock of claim 9,

the clutch assembly (900) comprises a first clutch piece (910) and a second clutch piece (920), the first clutch piece (910) is rotatably connected to the lock case (100), one end of the first clutch piece (910) is movably connected to the fourth connecting piece (320), the second clutch piece (920) is slidably connected to the third connecting piece (230), a fifth elastic piece (930) is connected between the second clutch piece (920) and the third connecting piece (230), the second clutch piece (920) is provided with an avoiding concave position (921) and a fifth guide inclined plane (922) positioned in the avoiding concave position (921), the third connecting piece (230) is provided with a second connecting hole (236), the pushing column (235) is provided with a third pushing part (237) and a guide part (238), the third pushing part (237) penetrates through the second connecting hole (236) and can extend out of the second connecting hole (236), a sixth elastic piece (250) is connected between the third connecting piece (230) and the pushing column (235), and the guide part (238) can be inserted into the avoiding concave position (921) and is provided with a sixth guide inclined surface (239) which can be matched with the fifth guide inclined surface (922);

the second extending portion (631) can be in abutting linkage with the third abutting portion (237) to enable the second toggle sheet (630) to abut against the third connecting member (230) to move, the fourth connecting member (320) can drive the first clutch member (910) to rotate, the first clutch member (910) can abut against the second clutch member (920) to move, so that the avoiding concave position (921) moves to a position corresponding to the guiding portion (238), the guiding portion (238) can be inserted into the avoiding concave position (921) under the action of the sixth elastic member (250) to retract the third abutting portion (237) into the second connecting hole (236), the second clutch member (920) can move to reset under the action of the fifth elastic member (930) and can abut against the abutting column (235) to move through the cooperation between the fifth guiding inclined surface (922) and the sixth guiding inclined surface (239), so that the third abutting portion (237) can protrude from the second connecting hole (236).