CN111608500A

CN111608500A - Anti-collision mechanism of top-bottom lock and door lock

Info

Publication number: CN111608500A
Application number: CN202010622800.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: CMECH Guangzhou Industrial Ltd
Current assignee: CMECH Guangzhou Industrial Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-09-01
Anticipated expiration: 2040-07-01
Also published as: CN111608500B

Abstract

The invention discloses a top and bottom lock anti-collision mechanism and a door lock, wherein the top and bottom lock anti-collision mechanism comprises a shell, a rotating connector which can be linked with a handle, a safety piece which can stretch out and draw back to one side of the shell, a sliding assembly which is linked with the safety piece and a limiting swing rod which is linked with the sliding assembly are arranged in the shell, a first bulge which can be abutted against the limiting swing rod on a rotary path of the handle for locking the door is arranged on the rotating connector, wherein when the safety piece at least extends out of one side of the shell due to opening the door and the handle returns to an initial position, the sliding assembly drives the limiting swing rod to swing towards a direction close to the first bulge so that the limiting swing rod is abutted against the first bulge; when the safety piece retracts to one side of the shell at least due to door closing, the sliding assembly resets and drives the limiting swing rod to swing towards the direction far away from the first bulge, so that the limiting swing rod is separated from the first bulge. The invention discloses a top and bottom lock anti-collision mechanism which can prevent a top and bottom lock from extending out of a lock body after a door is opened.

Description

Anti-collision mechanism of top-bottom lock and door lock

Technical Field

The invention belongs to the technical field of locks, and particularly relates to a top-bottom lock anti-collision mechanism and a door lock.

Background

In order to improve the anti-theft performance of an existing household door, a main lock is arranged, and meanwhile the configuration of a top lock and a bottom lock is increased, so that the number of locking points of the household door is increased, generally speaking, the top lock and the bottom lock are arranged on the same side of a door leaf, and the top lock and the bottom lock are connected through a top rod and a bottom rod, wherein the top lock is called as the top lock and the bottom lock is called as the bottom lock, and the working principle of the household door is generally as follows: when the door is opened, the lock core is opened by a key, the square bolt retracts, the handle is pressed down by a certain angle (such as 45 degrees), the inclined bolt retracts, and a synchronous linkage mechanism (generally a link mechanism or a multi-rod mechanism) for linking the handle and the top-bottom lock can drive the top-bottom rod to retract simultaneously, so that the top-bottom lock withdraws from the lock holes of the upper and lower door frames, the door is opened, the inclined bolt extends out after the handle is released, and the handle can return to an initial position (generally a horizontal position) under the action of a return spring; when the door is locked, the handle is lifted by a certain angle (such as 45 degrees), the synchronous linkage mechanism drives the top and bottom rods to simultaneously extend out, so that the top and bottom locks are inserted into lock holes of upper and lower door frames, then the lock core is locked by a key or an indoor operating knob, the square tongue also extends out for locking, the door is locked, and after the handle is released, the handle can return to the initial position again under the action of the reset spring. When the door is locked, the door is simultaneously limited by the top lock, the ground lock, the square bolt and the oblique bolt, so that the safety is improved a lot.

However, after the existing top and bottom door lock is opened, the top and bottom lock is easily extended out of the lock body due to a user misoperation (for example, when a child at home plays with a handle, the handle is inadvertently lifted), and then the top and bottom lock may be damaged (for example, after the top and bottom lock is extended out, the user directly closes the door by pushing the door, and the top and bottom lock collides with the upper and lower door frames).

Disclosure of Invention

In order to overcome the above disadvantages of the prior art, the present invention provides a top-bottom lock anti-collision mechanism, which can prevent the top-bottom lock from protruding from the lock body after the door is opened, and avoid the top-bottom lock from being damaged due to collision.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a top-bottom lock anti-collision mechanism comprises a shell, wherein a rotating connector which can be linked with a handle, a safety piece which can stretch out and draw back to one side of the shell, a sliding assembly which is linked with the safety piece and a limiting swing rod which is linked with the sliding assembly are arranged in the shell, a first bulge which can be abutted against the limiting swing rod on a rotary path of a door locking action of the handle is arranged on the rotating connector, wherein,

when the safety piece extends out of one side of the shell at least due to opening of a door and the handle returns to the initial position, the sliding assembly drives the limiting swing rod to swing towards the direction close to the first bulge, so that the limiting swing rod is abutted to the first bulge;

when the safety piece retracts to one side of the shell at least due to door closing, the sliding assembly resets and drives the limiting swing rod to swing towards the direction far away from the first bulge, so that the limiting swing rod is separated from the first bulge.

Furthermore, the sliding assembly comprises a sliding block arranged in a direction perpendicular to the telescopic direction of the safety part and a first elastic part used for resetting the sliding block, one end of the sliding block is linked with the limiting swing rod, the other end of the sliding block is provided with a clearance groove, and a flange part is formed on one side, close to the safety part, of the clearance groove;

the bumper includes bumper and the second elastic component that sets up along its flexible direction, the bumper passes through second elastic component elasticity stretch out and draw back in one side of casing, just the bumper is close to the slope has on the one end edge of flange portion, wherein, works as the bumper stretches out when one side of casing, the slope with flange portion sliding contact promotes the slider is along being close to first bellied direction slides, so that spacing pendulum rod with first protruding counterbalance.

Furthermore, one end of the safety rod, which is far away from the flange part, is provided with a rod head which can stretch out and draw back to one side of the shell, and the rod head is provided with an inclined surface which is arranged towards the door closing direction, so that the rod head is pressed to be at least partially retracted into one side of the shell when the door is closed.

Furthermore, the safety rod is also provided with a stress rod connected with the rod head, the edge of one end, far away from the rod head, of the stress rod is provided with the inclined part, a spring mounting surface is formed at the joint between the rod head and the stress rod, one end of the second elastic part is in contact with the spring mounting surface, and the other end of the second elastic part is in contact with the inner wall of the shell.

Furthermore, a protruding shaft is arranged on the spring mounting surface, the protruding shaft extends into one end of the second elastic piece, and the other end of the second elastic piece is in contact with the inner wall of the shell.

Further, the slider is kept away from one of the rake is served and is seted up towards its reset direction slope the inclined hole, spacing pendulum rod have first pole portion, second pole portion and with casing normal running fit's pivot portion, first pole portion pass through pivot portion with second pole portion is connected, just first pole portion is kept away from one of pivot portion is served and is equipped with protractile in the inclined hole and with inclined hole sliding fit's traveller, wherein, works as the traveller is followed the inclined hole is close to first bellied one end slides to when the first bellied other end is kept away from in the inclined hole, second pole portion towards be close to first bellied direction swing and with first arch counterbalance.

Further, the slider is further provided with a strip hole between the clearance groove and the inclined hole, the strip hole is close to the edge of the clearance groove and is provided with a first convex plate arranged along the sliding direction perpendicular to the slider, the shell is provided with a sliding groove in sliding fit with the first convex plate and arranged along the sliding direction of the slider, one end edge of the sliding groove is provided with a second convex plate in sliding fit with the strip hole and arranged opposite to the first convex plate, one end of the first elastic piece is in contact with the first convex plate, and the other end of the first elastic piece is in contact with the second convex plate.

Correspondingly, the invention further provides a door lock, which comprises the top-bottom lock anti-collision mechanism, wherein a synchronous linkage mechanism, a return spring, a first driving rod which can be connected with the top lock into a whole and can stretch up and down, and a second driving rod which can be connected with the bottom lock into a whole and can stretch up and down are further arranged in the shell, the synchronous linkage mechanism is in transmission connection with the rotating connector, the first driving rod and the second driving rod respectively, and the return spring is used for resetting the rotating connector after the handle completes the door opening/locking action.

Furthermore, the synchronous linkage mechanism comprises a toothed sheet, a compound gear and a reverse gear, a first rack part is arranged at one end, close to the rotary connector, of the first driving rod, and a second rack part is arranged at one end, close to the rotary connector, of the second driving rod; the tooth piece is meshed with the first rack part through the compound gear, the first rack part is meshed with the second rack part through the reverse gear, the tooth piece is arranged on the rotating connector, and the tooth piece can rotate synchronously along with the rotating connector in the process of opening/locking the door by utilizing the handle.

Furthermore, the tooth piece is sleeved on the rotary connecting head, a notch is formed in the tooth piece to form a first blocking part and a second blocking part, a second protrusion is further arranged on the rotary connecting head and is located in the notch between the first blocking part and the second blocking part, and when the handle is used for locking a door, the second protrusion is abutted against the first blocking part; when the handle is utilized to open the door, the second protrusion is abutted to the second blocking part.

Compared with the prior art, the invention has the beneficial effects that:

according to the anti-collision mechanism for the top and bottom lock, the rotary connecting head is additionally provided with the protrusion structure, the safety piece, the sliding assembly linked with the safety piece and the limiting swing rod linked with the sliding assembly are additionally arranged in the shell, so that on one hand, after the top and bottom lock is retracted and the door is opened in a mode of pressing down the handle, the safety piece can extend out of one side of the shell and drive the sliding assembly to slide, then the sliding assembly drives the limiting swing rod to swing towards the direction close to the first protrusion and abut against the first protrusion returning to the initial position, and on the rotary path of the lifting handle, the rotary connecting head cannot rotate due to the fact that the first protrusion is abutted by the limiting swing rod, so that the top and bottom lock can be prevented from being damaged due to accidental extension of the top and bottom lock, and the service life of the door lock can be prolonged; on the other hand, after the door is closed, the safety element can be retracted to one side of the shell and drives the sliding assembly to reset, the sliding assembly drives the limiting swing rod to swing towards the direction away from the first bulge and separate from the first bulge at the initial position to release the blocking of the first bulge, so that the heaven and earth lock can normally extend out to lock the door, and the normal use of the heaven and earth lock is ensured.

Drawings

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

FIG. 1 is a schematic view of an external structure of a door lock according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the door lock (with the sliding assembly removed) in accordance with one embodiment of the present invention;

FIG. 3 is a schematic view of the front interior of the door lock with the safety member extended according to an embodiment of the present invention;

FIG. 4 is a schematic view of the back side of the interior of the door lock after the safety member is extended in accordance with one embodiment of the present invention;

FIG. 5 is a schematic view of the front inner door lock with the safety member extended;

FIG. 6 is a schematic view of the safety member extending out of the interior back of the front door lock in accordance with one embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a fuse in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a slider according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a limit swing link according to an embodiment of the present invention;

fig. 10 is a schematic view illustrating the assembly of the rotary joint, the tooth plate and the return spring according to an embodiment of the present invention.

Description of reference numerals:

1-housing, 11-sliding groove, 12-second convex plate, 13-blocking block, 2-rotary connector, 21-first convex, 22-second convex, 23-square hole, 24-spring mounting groove, 3-safety piece, 31-safety rod, 311-rod head, 3111-inclined plane, 312-stress rod, 3121-inclined plane, 32-second elastic piece, 33-convex shaft, 4-sliding component, 41-first elastic piece, 42-sliding block, 421-clearance groove, 422-flange part, 423-inclined hole, 424-strip hole, 425-first convex plate, 5-limit swinging rod, 50-rotating shaft part, 51-first rod part, 52-second rod part, 53-sliding column, 6-reset spring, 7-first drive lever, 71-first rack, 72-first connecting head, 8-second drive lever, 81-second rack, 82-second connecting head, 91-toothed segment, 911-first blocking, 912-second blocking, 921-first gear, 922-second gear, 93-reversing gear.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 5, an embodiment of the present invention provides a door lock having a top-bottom lock anti-collision mechanism, where the top-bottom lock anti-collision mechanism includes a housing 1, a rotary connector 2 installed in the housing 1 and capable of being linked with a handle (not shown in the figures), a safety member 3 capable of extending to and contracting from one side of the housing 1, a sliding assembly 4 linked with the safety member 3, and a limit swing rod 5 linked with the sliding assembly 4, and the rotary connector 2 has a first protrusion 21 capable of abutting against the limit swing rod 5 on a rotation path of a door locking action of the handle (i.e., counterclockwise direction in fig. 3 or clockwise direction in fig. 4), where when the safety member 3 extends out of one side of the housing 1 due to at least door opening and the handle returns to an initial position (the handle after returning is generally in a horizontal position), the sliding assembly 4 drives the limit swing rod 5 to swing in a direction close to the first protrusion 21, so that the limit swing rod 5 is abutted against the first bulge 21; when the safety element 3 retracts to one side of the shell 1 at least due to the closing of the door, the sliding component 4 resets and drives the limit swing rod 5 to swing towards the direction far away from the first bulge 21, so that the limit swing rod 5 is separated from the first bulge 21. Illustratively, have a square hole 23 on the rotation connector 2, this square hole 23 can cooperate with the square shaft on the conventional handle, so, when rotating the handle, the handle can drive and rotate connector 2 synchronous rotation.

The anti-collision mechanism for the top and bottom lock of the embodiment is characterized in that a protruding structure is additionally arranged on a rotary connector 2, a safety piece 3, a sliding assembly 4 linked with the safety piece 3 and a limit swing rod 5 linked with the sliding assembly 4 are additionally arranged in a shell 1, so that on one hand, after the top and bottom lock is retracted and a door is opened by pressing down a handle (referring to fig. 3, when the handle is pressed down, the rotary connector 2 rotates along the clockwise direction), the safety piece 3 can extend out of one side of the shell 1 and drive the sliding assembly 4 to slide, and then the sliding assembly 4 drives the limit swing rod 5 to swing towards the direction close to a first protrusion 21 and abut against the first protrusion 21 returning to the initial position, so that on the rotary path of the upper lifting handle, the rotary connector 2 cannot rotate because the first protrusion 21 is abutted by the limit swing rod 5, and the top and bottom lock can be prevented from being accidentally extended and damaged by collision, the service life of the door lock is prolonged; on the other hand, after the door is closed, the safety element 3 can retract to one side of the shell 1 and drive the sliding assembly 4 to reset, the sliding assembly 4 drives the limiting swing rod 5 to swing towards the direction far away from the first protrusion 21 and separate from the first protrusion 21 at the initial position to release the blocking of the first protrusion 21, so that the heaven and earth lock can normally extend to lock the door (namely, the heaven and earth lock can extend in a mode of lifting the handle at the moment), and the normal use of the heaven and earth lock is ensured.

Further, referring to fig. 2 to 6, in an exemplary embodiment, the sliding assembly 4 includes a slider 42 disposed along a direction perpendicular to the extending and retracting direction of the safety member 3 and a first elastic member 41 for restoring the slider 42, one end of the slider 42 is linked with the limit swing link 5, the other end is opened with a clearance groove 421, and a flange portion 422 is formed on one side of the clearance groove 421 close to the safety member 3; the safety member 3 includes a safety lever 31 and a second elastic member 32 arranged along a telescopic direction thereof, the safety lever 31 is elastically telescopic in one side of the housing 1 by the second elastic member 32, and an edge of one end of the safety lever 31 near the flange portion 422 has a tilted portion 3121, wherein, when the safety lever 31 is protruded out of one side of the housing 1, the tilted portion 3121 is in sliding contact with the flange portion 422 and pushes the slider 42 to slide in a direction near the first protrusion 21, so that the limit swing link 5 is abutted against the first protrusion 21. The first elastic member 41 and the second elastic member 32 may be elastic members such as a spring, a spring plate, and an elastic band, as long as the use requirements can be met, and this embodiment is not particularly limited thereto, and illustratively, the first elastic member 41 and the second elastic member 32 are both pressure springs.

In this embodiment, based on the above structural design, on one hand, after the top-and-bottom lock is retracted and the door is opened by pressing down the handle, the safety rod 31 can extend out of one side of the housing 1 and drive the sliding block 42 to slide, and then slide to drive the limiting swing rod 5 to swing towards the direction close to the first protrusion 21 and to abut against the first protrusion 21 returning to the initial position, so that on the rotation path of the upper handle (i.e., counterclockwise in fig. 3 or clockwise in fig. 4), the rotating connector 2 cannot rotate due to the fact that the first protrusion 21 is abutted by the limiting swing rod 5, and therefore the top-and-bottom lock can be prevented from being accidentally extended and being damaged, and the service life of the door lock can be prolonged; on the other hand, after the door is closed, the safety lever 31 can be retracted to one side of the housing 1, and under the cooperation of the safety lever 31 and the first elastic member 41, the slider 42 is reset (i.e. the slider 42 moves in a direction away from the first protrusion 21 in a direction perpendicular to the telescopic direction of the safety lever 31) and drives the limit swing rod 5 to swing in a direction away from the first protrusion 21 and separate from the first protrusion 21 at the initial position to release the abutment on the first protrusion 21, so that the heaven and earth lock can normally extend to lock the door, and the normal use of the heaven and earth lock is ensured.

Further, referring to fig. 3 to 7, in an exemplary embodiment, an end of the safety lever 31 away from the flange portion 422 has a rod head 311 that is retractable to one side of the housing 1, and the rod head 311 has an inclined surface 3111 that is disposed toward the door closing direction, so that the rod head 311 is pressed to retract at least partially into one side of the housing 1 when the door is closed. Illustratively, the club head 311 is triangular and has two inclined surfaces 3111, but in other embodiments, the club head 311 may also be conical, etc. as long as the desired effect can be achieved, which is not limited in this embodiment.

In the embodiment, based on the above structural design, when the door is closed, when the rod head 311 of the safety lever 31 contacts with the edge of the corresponding door frame or another door, the rod head 311 retracts into one side of the housing 1 due to being pressed, so that the slider 42 can be reset under the cooperation of the safety lever 31 and the first elastic element 41 and drives the limit swing rod 5 to swing in the direction away from the first protrusion 21 and separate from the first protrusion 21 at the initial position, thereby releasing the abutment of the first protrusion 21; when the door is opened, when the rod head 311 of the safety rod 31 is separated from the edge of the corresponding door frame or the other door, the safety rod 31 can extend out of one side of the housing 1 and drive the slider 42 to move in the direction close to the first protrusion 21, and then slide to drive the limiting swing rod 5 to swing in the direction close to the first protrusion 21 and abut against the first protrusion 21 returning to the initial position, so that the top-bottom lock cannot extend.

Further, referring to fig. 3 to 7, in an exemplary embodiment, the bumper 31 further has a stress beam 312 connected to the head 311 (illustratively, the stress beam 312 is connected to the head 311 and forms an integral structure), an edge of one end of the stress beam 312, which is away from the head 311, has an inclined portion 3121, and a connection between the head 311 and the stress beam 312 is formed with a spring mounting surface, wherein one end of the second elastic member 32 is in contact with the spring mounting surface and the other end is in contact with an inner wall of the housing 1.

In the present embodiment, based on the above-mentioned structural design, the safety lever 31 can elastically extend and contract in one side of the housing 1.

Further, referring to fig. 3, 4 and 7, in an exemplary embodiment, a protruding shaft 33 is provided on the spring mounting surface, the protruding shaft 33 extends into one end of the second elastic member 32, and the other end of the second elastic member 32 contacts the inner wall of the housing 1. Therefore, the stability of the second elastic element 32 in stretching is improved, and the stretching of the bumper 31 can be more stable.

Further, referring to fig. 3 to 9, in an exemplary embodiment, an inclined hole 423 inclined toward the reset direction is formed at one end of the slider 42 away from the inclined portion 3121, the limit swing link 5 has a first lever portion 51, a second lever portion 52 and a rotating shaft portion 50 rotationally engaged with the housing 1, the first lever portion 51 is connected to the second lever portion 52 through the rotating shaft portion 50, and one end of the first lever portion 51 away from the rotating shaft portion 50 is provided with a sliding column 53 capable of extending into the inclined hole 423 and slidably engaged with the inclined hole 423, wherein when the sliding column 53 slides from one end of the inclined hole 423 close to the first protrusion 21 to the other end of the inclined hole 423 away from the first protrusion 21, the second lever portion 52 swings toward the direction close to the first protrusion 21 and abuts against the first protrusion 21. Illustratively, when one end of the second lever portion 52 abuts against the first protrusion 21, the second lever portion 52 is in a vertical posture (i.e., the second lever portion 52 is perpendicular to the first protrusion 21).

In the present embodiment, based on the above structural design, when the slider 42 moves in the direction close to the first protrusion 21, the second rod portion 52 in the limiting swing rod 5 can be driven to swing in the direction close to the first protrusion 21 and abut against the first protrusion 21 returning to the initial position, so that the rotating connector 2 cannot rotate along the revolving path of the door locking action of the handle (i.e., in fig. 4, the rotating connector 2 cannot rotate in the clockwise direction); when the slide block 42 moves in the direction away from the first protrusion 21, the second rod portion 52 of the limiting swing link 5 can be driven to disengage from the first protrusion 21 to release the blocking of the first protrusion 21.

Further, referring to fig. 2 to 8, in an exemplary embodiment, the slider 42 further has a long hole 424 located between the clearance groove 421 and the inclined hole 423, an edge of the long hole 424 close to the clearance groove 421 has a first protruding plate 425 disposed along a sliding direction of the slider 42, the housing 1 has a sliding groove 11 slidably engaged with the first protruding plate 425 and disposed along the sliding direction of the slider 42, an edge of one end of the sliding groove 11 has a second protruding plate 12 slidably engaged with the long hole 424 and disposed opposite to the first protruding plate 425, wherein one end of the first elastic member 41 contacts the first protruding plate 425, and the other end contacts the second protruding plate 12. The elongated hole 424 is illustrated as being rectangular, but may be in the shape of a racetrack, etc., as long as the usage requirement is met, and the embodiment is not particularly limited thereto.

In the present embodiment, based on the above-mentioned structural design, the sliding assembly of the slider 42 is realized, such that when the safety lever 31 extends out of one side of the housing 1, the slider 42 is movable in the direction approaching the first protrusion 21 by the safety lever 31, and when the safety lever 31 retracts into one side of the housing 1, the slider 42 is movable in the direction away from the first protrusion 21 by the cooperation of the safety lever 31 and the first elastic member 41, so as to realize the reset.

Correspondingly, referring to fig. 1 to 10, an embodiment of the present invention further provides a door lock, including the anti-collision mechanism of the top and bottom lock in any of the above embodiments, the housing 1 further includes a synchronous linkage mechanism (not shown), a return spring 6, a first driving rod 7 which is integrally connected with the top lock (generally, the top lock is composed of a top rod and a locking block, wherein the locking block is disposed at the upper end of the top rod and integrally formed with the top rod) and is capable of extending up and down, and a second driving rod 8 which is integrally connected with the bottom lock (generally, the bottom lock is composed of a bottom rod and a locking block, wherein the locking block is disposed at the lower end of the bottom rod and integrally formed with the bottom rod), wherein, synchronous link gear is connected with rotation connector 2, first actuating lever 7, the transmission of second actuating lever 8 respectively, and reset spring 6 is used for after the handle is accomplished the action of opening/locking the door, reseing to rotating connector 2. Illustratively, the first driving rod 7 has a first connector 72 at one end thereof for connecting with the skyhook (specifically, the first connector 72 is connected with the lower end of the skyhook), and the second driving rod 8 has a second connector 82 at one end thereof for connecting with the ground lock (specifically, the second connector 82 is connected with the upper end of the ground rod). In some embodiments, the first driving rod 7 and the second driving rod 8 can be synchronously linked through an existing link mechanism or a multi-rod mechanism (that is, when the handle is rotated, the first driving rod 7 and the second driving rod 8 can synchronously extend out of the casing 1 or retract into the casing 1). Illustratively, above-mentioned reset spring 6 is torsion spring, has spring mounting groove 24 in the rotation connector 2, has the piece 13 that blocks that is close to rotation connector 2 setting on the casing 1, and wherein, reset spring 6 arranges spring mounting groove 24 in, and reset spring 6's one end is inconsistent with one side of blocking piece 13, and the other end is inconsistent with the opposite side of blocking piece 13.

In this embodiment, based on the above structural design, the door lock has a top-bottom lock anti-collision function, wherein after the door is closed and the top-bottom lock anti-collision function of the door lock is closed, a user can drive the top-bottom lock to extend out in a mode of lifting the handle and drive the top-bottom lock to retract in a mode of pressing the handle; and after opening the door, the world lock anticollision function of lock is opened, and at this moment, the user can only carry out the operation of pushing down the handle, and can't lift the operation of handle to can avoid the door to open the possibility that the world lock accidentally stretches out and takes place to be bumped.

Further, with reference to fig. 3 to 6, in an exemplary embodiment, the synchronous linkage comprises a toothed plate 91, a compound gear and a counter gear 93, the first drive rod 7 has a first toothed rack portion 71 at an end near the rotary joint 2, and the second drive rod 8 has a second toothed rack portion 81 at an end near the rotary joint 2; the tooth piece 91 is meshed with the first rack portion 71 through a compound gear, the first rack portion 71 is meshed with the second rack portion 81 through a reverse gear 93, the tooth piece 91 is arranged on the rotary connector 2, and the tooth piece 91 can synchronously rotate along with the rotary connector 2 in the process of door opening/locking actions by the handle. Illustratively, the compound gear includes a first gear part 921 and a second gear part 922 coaxially disposed with the first gear part 921, wherein the first gear part 921 meshes with the tooth piece 91, and the second gear part 922 meshes with the first rack part 71, wherein an outer diameter of the first gear part 921 is smaller than an outer diameter of the second gear part 922.

In this embodiment, based on above-mentioned structural design, not only can realize the synchronous linkage between first actuating lever 7 and the second actuating lever 8, make the user can drive the world lock through rotating the handle and open or close, realize locking the door or opening the door, it is very convenient to operate, moreover, compare with the linkage mode that link mechanism or multi-bar mechanism were adopted to the tradition, this embodiment is through adopting the linkage mode of this kind of "gear + rack", compact structure, can avoid the arm length problem that the rod structure exists, reach the effect of saving inner space, thereby be favorable to reducing the whole volume of world lock.

Further, referring to fig. 3 to 6, in an exemplary embodiment, the tooth piece 91 is sleeved on the rotary connector 2 (illustratively, the tooth piece 91 is sleeved on one end of the rotary connector 2), the tooth piece 91 is provided with a notch (not shown) and forms a first blocking portion 911 and a second blocking portion 912, the rotary connector 2 is further provided with a second protrusion 22, the second protrusion 22 is located in the notch between the first blocking portion 911 and the second blocking portion 912, wherein, when the door locking action is performed by using the handle, the second protrusion 22 is abutted against the first blocking portion 911; when the handle is used to open the door, the second projection 22 abuts against the second stopper 912.

In this embodiment, based on the above structural design, in the process of door opening action (i.e., clockwise rotation of the rotary connector 2 in fig. 3) or door locking action (i.e., counterclockwise rotation of the rotary connector 2 in fig. 3) by using the handle, the tooth piece 91 can rotate synchronously with the rotary connector 2.

In order to facilitate a more complete understanding of the door lock disclosed in the present invention, the following is a more specific embodiment (assuming that the switch actions of the deadbolt and the dead bolt are not considered):

when the door is closed, referring to fig. 3 to 10, the rod 311 of the safety lever 31 contacts with the edge of the corresponding door frame or the other door, the rod 311 of the safety lever 31 is partially retracted into one side of the housing 1 due to pressure (at this time, the second elasticity is in a compressed state), during the process that the safety lever 31 is retracted into one side of the housing 1, the tail end of the inclined portion 3121 is separated from the flange portion 422 and moves into the clearance groove 421 to release the restriction on the flange portion 422, and at the same time, under the elastic restoring force of the first elastic member 41, the slider 42 slides in the direction away from the first protrusion 21, and the inclined hole 423 pulls the sliding column 53 to slide from one end of the inclined hole 423 away from the first protrusion 21 to the other end of the inclined hole 423 close to the first protrusion 21, so that the second rod portion 52 is separated from the first protrusion 21 to release the; subsequently, when the door is locked, the handle is lifted, referring to fig. 3 and 5, the handle drives the rotary connector 2 to rotate counterclockwise, the second protrusion 22 pushes the first blocking portion 911 along with the rotation of the rotary connector 2, so as to drive the tooth 91 to rotate synchronously with the rotary connector 2, and simultaneously, the tooth 91 drives the first gear portion 921 and the second gear portion 922 to rotate clockwise, the second gear portion 922 drives the first driving rod 7 to move upward, when the first driving rod 7 moves upward, the first driving rod 7 drives the reverse gear 93 to rotate counterclockwise, so as to drive the second driving rod 8 to move downward, so that the first connector 72 can extend upward out of the housing 1, and the second connector 82 can extend downward out of the housing 1, so that the lock head at the upper end of the top lever can be inserted into the lock hole of the upper door frame, the lock head at the lower end of the ground lever can be inserted into the lock hole of the lower door frame to lock the door, under the action of the return spring 6, the rotary connector 2 and the handle are reset together (wherein, in the process of resetting the rotary connector 2, the tooth piece 91 and the rotary connector 2 rotate relatively, that is, the tooth piece 91 is in a static state and cannot rotate synchronously with the rotary connector 2, and after the rotary connector 2 is reset, the second protrusion 22 is in contact with the second blocking part 912, as shown in fig. 5);

when the door is opened, the handle is pressed downwards, referring to fig. 3 and 5, the handle drives the rotary connector 2 to rotate clockwise, along with the rotation of the rotary connector 2, the second protrusion 22 pushes the second blocking part 912, so as to drive the tooth piece 91 to rotate synchronously with the rotary connector 2, meanwhile, the tooth piece 91 drives the first gear part 921 and the second gear part 922 to rotate anticlockwise, the second gear part 922 drives the first driving rod 7 to move downwards, when the first driving rod 7 moves downwards, the first driving rod 7 drives the reversing gear 93 to rotate clockwise, so as to drive the second driving rod 8 to move upwards, so that the first connector 72 can retract downwards into the shell 1, the second connector 82 can retract upwards into the shell 1, and the lock head at the upper end of the top lever can withdraw from the lock hole of the upper door frame, and the lock head at the lower end of the ground lever can withdraw from the lock hole of the lower door frame, so as to unlock the; after the door is opened, referring to fig. 3 to 10, the rod head 311 of the safety rod 31 is separated from the edge of the corresponding door frame or another door, the safety rod 31 is completely extended out of one side of the housing 1 by the elastic restoring force of the second elastic member 32, the inclined surface of the inclined portion 3121 slides relative to the flange portion 422 and pushes the flange portion 422 during the process that the safety rod 31 is extended out of one side of the housing 1, so that the slider 42 slides in a direction close to the first protrusion 21 (at this time, the first elastic member 41 between the first protruding plate 425 and the second protruding plate 12 is gradually compressed), the inclined hole 423 pushes the sliding column 53 to slide from one end of the inclined hole 423 close to the first protrusion 21 to the other end of the inclined hole 423 away from the first protrusion 21, so that the second rod portion 52 swings in a direction close to the rotary connecting head 2, and after the handle is released, the rotary connecting head 2 is restored together with the handle by the restoring spring 6, so that the first protrusion 21 on the rotary connector 2 is abutted against the second rod part 52 (at this time, the tail end of the inclined part 3121 is abutted against the flange part 422, and the slider 42 is in a stationary state), so that the rotary connector 2 cannot rotate in the counterclockwise direction, that is, the handle cannot be lifted at this time, and thus the top-bottom lock can be prevented from accidentally extending out after the door is opened.

In addition, it should be noted that other contents of the top-bottom lock anti-collision mechanism and the door lock disclosed by the invention can be referred to the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A top-bottom lock anti-collision mechanism comprises a shell, and is characterized in that a rotary connector which can be linked with a handle, a safety piece which can stretch out and draw back to one side of the shell, a sliding component which is linked with the safety piece and a limiting swing rod which is linked with the sliding component are arranged in the shell, a first bulge which can be abutted against the limiting swing rod on a rotary path of a door locking action of the handle is arranged on the rotary connector, wherein,

2. The anti-collision mechanism of the top-bottom lock according to claim 1, wherein the sliding assembly comprises a sliding block arranged along a direction perpendicular to the telescopic direction of the safety member and a first elastic member for resetting the sliding block, one end of the sliding block is linked with the limit swing rod, the other end of the sliding block is provided with a clearance groove, and a flange part is formed on one side of the clearance groove close to the safety member;

3. The mechanism of claim 2, wherein the bumper is provided with a head extending from the flange portion to one side of the housing, the head having an inclined surface facing in the direction of closing the door to allow the head to be compressed to retract at least partially into the one side of the housing when the door is closed.

4. The anti-collision mechanism for a heaven and earth lock as claimed in claim 3, wherein the bumper further comprises a stress beam connected to the head, the stress beam has the inclined portion on an edge of an end thereof remote from the head, and a spring mounting surface is formed at a connection between the head and the stress beam, wherein one end of the second elastic member is in contact with the spring mounting surface and the other end is in contact with an inner wall of the housing.

5. The anti-collision mechanism for the top-bottom lock of claim 4, wherein a protruding shaft is arranged on the spring mounting surface, the protruding shaft extends into one end of the second elastic member, and the other end of the second elastic member is in contact with the inner wall of the shell.

6. The anti-collision mechanism of a top-bottom lock according to claim 2, wherein the end of the slider away from the inclined portion is provided with the inclined hole inclined toward the reset direction thereof, the limit swing link has a first lever portion, a second lever portion and a rotating shaft portion rotatably engaged with the housing, the first lever portion is connected to the second lever portion through the rotating shaft portion, and the end of the first lever portion away from the rotating shaft portion is provided with a slide post which can extend into the inclined hole and slidably engaged with the inclined hole, wherein when the slide post slides from the end of the inclined hole close to the first protrusion to the other end of the inclined hole away from the first protrusion, the second lever portion swings toward the direction close to the first protrusion and abuts against the first protrusion.

7. The anti-collision mechanism of the top-bottom lock according to claim 6, wherein the slider is further provided with a long hole located between the clearance groove and the inclined hole, the edge of the long hole close to the clearance groove is provided with a first protruding plate arranged along the sliding direction perpendicular to the slider, the housing is provided with a sliding groove in sliding fit with the first protruding plate and arranged along the sliding direction of the slider, the edge of one end of the sliding groove is provided with a second protruding plate in sliding fit with the long hole and arranged opposite to the first protruding plate, wherein one end of the first elastic member is in contact with the first protruding plate, and the other end of the first elastic member is in contact with the second protruding plate.

8. A door lock comprises the anti-collision mechanism of the top and bottom lock as claimed in any one of claims 1 to 7, and is characterized in that a synchronous linkage mechanism, a return spring, a first driving rod which can be connected with the top lock into a whole and can be extended up and down, and a second driving rod which can be connected with the bottom lock into a whole and can be extended up and down are further installed in the shell, wherein the synchronous linkage mechanism is respectively in transmission connection with the rotary connector, the first driving rod and the second driving rod, and the return spring is used for resetting the rotary connector after the handle completes the door opening/locking action.

9. The door lock of claim 8, wherein the synchronization linkage includes a toothed plate, a compound gear and a counter gear, the first drive rod has a first rack portion at an end proximate the rotary connector, and the second drive rod has a second rack portion at an end proximate the rotary connector; the tooth piece is meshed with the first rack part through the compound gear, the first rack part is meshed with the second rack part through the reverse gear, the tooth piece is arranged on the rotating connector, and the tooth piece can rotate synchronously along with the rotating connector in the process of opening/locking the door by utilizing the handle.

10. The top-bottom door lock with pick-proof function according to claim 9, wherein the tooth piece is sleeved on the rotary connector, the tooth piece is provided with a notch and forms a first blocking portion and a second blocking portion, the rotary connector is further provided with a second protrusion, the second protrusion is located in the notch between the first blocking portion and the second blocking portion, wherein when the handle is used for locking the door, the second protrusion is abutted against the first blocking portion; when the handle is utilized to open the door, the second protrusion is abutted to the second blocking part.