CN108193953B

CN108193953B - Back triggers formula door leaf interlocking structure

Info

Publication number: CN108193953B
Application number: CN201810178947.XA
Authority: CN
Inventors: 黄建勋; 朱军雄
Original assignee: Simto Group Co ltd
Current assignee: XINDUO GROUP CO Ltd
Priority date: 2018-03-05
Filing date: 2018-03-05
Publication date: 2023-02-03
Anticipated expiration: 2038-03-05
Also published as: CN108193953A

Abstract

The invention discloses a rear-triggering type door leaf interlocking structure which comprises a door leaf, a main lock body, a connecting rod assembly, an anti-theft locking point assembly and a contact, wherein the connecting rod assembly comprises a transverse connecting rod assembly and a longitudinal connecting rod assembly which are connected with each other, the contact is arranged at the rear end of the transverse connecting rod assembly and is positioned on the inner side of the door leaf, the contact drives the longitudinal connecting rod assembly to move outwards through the transverse connecting rod assembly and drives the anti-theft locking point assembly to be locked, and the main lock body drives the connecting rod assembly to move inwards and drives the anti-theft locking point assembly to be unlocked. According to the invention, the transmission pressure of the main lock body is reduced through the arrangement of the contacts at the inner side of the door leaf, the abrasion of internal parts of the main lock body in the use process is reduced, and on the other hand, the functions of the anti-theft lock point component used in the main lock body are separated, so that the internal structure of the main lock body is simplified, the excessive deformation of the internal parts of the main lock body caused by impact due to frequent door opening, door closing, locking and unlocking of the internal parts of the main lock body in the use process is prevented, and the service life of the main lock body is shortened.

Description

Back triggers formula door leaf interlocking structure

Technical Field

The invention relates to a door leaf interlocking structure, in particular to a rear-trigger type door leaf interlocking structure.

Background

The mode that increases the lock point is mostly adopted to the burglary-resisting door on the present market improves theftproof performance, increase the world lock promptly on the basis of the master lock body, perhaps further set up the tapered end at four corners of door leaf, thereby improve the theftproof performance of burglary-resisting door, in order to guarantee the interlock precision of tapered end, usually realize the control to the tapered end of distributing at four corners through setting up link assembly, wherein link assembly's one end links to each other with the tapered end, the other end links to each other with the master lock body, master lock body drive link assembly drives the locking and the unblock of tapered end.

However, this kind of link assembly also has great defect, because link assembly all links to each other with the master lock body, realize the locking and the unblock of tapered end through the drive of master lock body, then on the one hand, in order to guarantee the drive effect, the inside drive mechanism that needs to be provided with the structure complicacy of master lock body, guarantee to drive link assembly through key or handle and switch between locking and unblock two states, still need to guarantee the locking of master lock body to the door frame simultaneously, the normal use of unblock function, thereby lead to the manufacturing cost of master lock body higher, the processing degree of difficulty is great, be unfavorable for the production popularization of product. On the other hand, for improving the theftproof effect, what the tapered end generally set up is comparatively dispersed, if distribute in four corners of door leaf, far away with the distance of master lock body, the master lock body need exert enough big thrust and pulling force through link assembly is remote to a plurality of lock points and just can realize driving the effect of lock point locking and unblock, very big increase the transmission pressure of master lock body. In addition, because of the weight difference of each door leaf, some door leaves are heavier, some door leaves are lighter, and the dynamics that everyone closed the door also has greatly for a short time, consequently, the impact force that leads to the master lock body to bear also has strongly to have weakly, and this kind of master lock body at present is too complicated because of inner structure, then under the condition of reduction in production cost and product selling price, can lead to the shock resistance of each part of master lock body in the use not enough, under the powerful impact that surpasss the design load for a long time, can lead to the inside drive mechanism of master lock body the condition of excessive loss easily to appear, make the life of master lock body shorten rapidly, lead to the emergence of mass quality accident, need make the improvement to this.

Disclosure of Invention

The invention provides a novel post-triggering type door leaf interlocking structure, aiming at the defects of high production cost and large processing difficulty of a main lock body caused by the complicated structure of a transmission mechanism in the main lock body, high transmission pressure of the main lock body, easy loss in the main lock body and the like caused by dispersed arrangement of a lock head in the prior art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the utility model provides a back triggers formula door leaf interlocking structure, includes door leaf, master lock body, link assembly, theftproof lock point subassembly, the master lock body set up in the door leaf outside and with link assembly is connected, the theftproof lock point subassembly set up in the door leaf frame and with link assembly is connected, still includes the contact, link assembly includes interconnect's horizontal link assembly, vertical link assembly, the contact set up in horizontal link assembly rear end just is located the inboard of door leaf, the theftproof lock point subassembly set up in on the vertical link assembly, the contact passes through horizontal link assembly drives vertical link assembly and outwards removes and drive form the locking position when the theftproof lock point subassembly is locked, the master lock body drives link assembly inwardly moving and drive form the unblock position when the theftproof lock point subassembly unblock.

Wherein the door leaf plays the effect of bearing each part on the one hand, thereby on the other hand can cooperate with the door frame when using and realize the locking of door. The main lock body is used for being matched with a door frame or another door leaf to form a locking state and an opening state on one hand, and is used for being connected with the connecting rod assembly so as to be matched with the connecting rod assembly on the other hand. Specifically, a transverse connecting rod assembly in the connecting rod assembly is used for arranging a contact, and a longitudinal connecting rod assembly in the connecting rod assembly is used for arranging an anti-theft locking point assembly, so that the longitudinal connecting rod assembly can drive the anti-theft locking point assembly to be locked and unlocked under the pushing of the transverse connecting rod assembly. The contact is arranged on the inner side of the door leaf and used for pushing the transverse connecting rod assembly to move outwards through the contact when the door leaf is closed, so that the anti-theft locking point assembly arranged on the longitudinal connecting rod assembly is pushed to be locked into the door frame to form a locking position, the main lock body pushes the longitudinal connecting rod assembly and the transverse connecting rod assembly to move inwards during unlocking, the anti-theft locking point assembly is driven to move out of the door frame through the longitudinal connecting rod assembly to form an unlocking position, and meanwhile, the contact is driven to extend through the transverse connecting rod assembly.

According to the invention, the contact arranged on the inner side of the door leaf pushes the connecting rod assembly to move outwards so as to drive the anti-theft locking point assembly to be locked, so that a user can drive the anti-theft locking point assembly to automatically lock only by closing the door leaf, the main lock body does not need to be additionally operated for locking the anti-theft locking point assembly, the transmission pressure of the main lock body is greatly reduced, and the abrasion of internal parts of the main lock body in the use process is reduced. On the other hand, the functions of the anti-theft locking point component in the main lock body are separated through the arrangement of the contact and the mutual matching of the contact and the connecting rod component, so that the internal structure of the main lock body is greatly simplified, the fault tolerance rate of the main lock body in use is improved, and the excessive deformation of internal parts of the main lock body caused by impact and abrasion of the internal parts of the main lock body due to frequent door opening, door closing, locking and unlocking in the use process is prevented, thereby prolonging the service life of the main lock body.

Preferably, the rear-triggered door leaf interlocking structure comprises a main lock body, a main transmission assembly, an inner transmission assembly, an intermediate transmission assembly and a lock tongue assembly, wherein the main lock body comprises a shell, the outer transmission assembly, the inner transmission assembly, the outer transmission assembly and the inner transmission assembly are respectively located on two sides of the shell and are respectively connected to the shell in a rotating mode, the intermediate transmission assembly and the lock tongue assembly are respectively located in the shell and partially exposed out of the shell, the outer transmission assembly is in contact with the lock tongue assembly and limited by the lock tongue assembly, the intermediate transmission assembly, the inner transmission assembly and the lock tongue assembly are matched, the middle transmission assembly drives the lock tongue assembly to move inwards to release the limitation of the outer transmission assembly, the inner transmission assembly drives the lock tongue assembly to move inwards to unlock the main lock body, and the outer transmission assembly and the inner transmission assembly drive the connecting rod assembly to move inwards to drive the anti-theft lock point assembly to unlock the position.

The casing is used for holding middle drive assembly, the spring bolt subassembly of main lock body, and middle drive assembly is used for driving the spring bolt subassembly with the spring bolt subassembly cooperation and removes, and the spring bolt subassembly is used for carrying on spacingly to external drive assembly on one hand, and on the other hand is used for locking into the door frame and makes the main lock body be in the locking state, improves the holistic theftproof performance of door leaf. The outer transmission assembly is limited by the bolt assembly when the anti-theft lock point assembly forms a locking position, then under the condition that a user does not drive the bolt assembly to unlock the door frame through the middle transmission assembly, the outer transmission assembly cannot drive the connecting rod assembly to move, only after the user drives the middle transmission assembly to move through a key and drives the bolt assembly to unlock, the bolt assembly can release the limitation to the outer transmission assembly, at the moment, the user can drive the connecting rod assembly to move inwards from the outside of the door through the outer transmission assembly to drive the anti-theft lock point assembly to be in an unlocking position, and the safety of the main lock body during locking is ensured. The inner transmission assembly is arranged on the inner side of the shell, so that a user can rotate the inner transmission assembly from the inside of the door at any time to drive the lock tongue assembly to move inwards to unlock the main lock body and push the connecting rod assembly to move inwards to drive the anti-theft lock point assembly to be located at an unlocking position, and the user can conveniently unlock the anti-theft lock point assembly and the main lock body from the inside of the door at any time.

Preferably, the rear-triggering door leaf interlocking structure comprises an outer driving assembly, an outer handle rotating arm and an outer driving lever, wherein the inner driving assembly comprises an inner handle, an inner handle rotating arm, an inner driving lever and an inner driving lever, the outer handle rotating arm and the inner handle rotating arm are rotatably connected with each other and rotatably connected to the shell respectively, the outer driving lever is connected to the outer handle rotating arm and matched with the connecting rod assembly, the outer handle is connected to the outer handle rotating arm and drives the outer driving lever to rotate through the outer handle rotating arm, the outer driving lever is matched with the lock tongue assembly, the inner driving lever is connected to the inner handle rotating arm and matched with the connecting rod assembly, the inner driving lever is connected to the inner handle rotating arm, the inner driving lever drives the lock tongue assembly to move inwards when rotating, and the outer driving lever and the inner driving lever drive the connecting rod assembly to move inwards to unlock the anti-theft lock point assembly when rotating.

The outer handle is used for holding, and the user of being convenient for drives outer handle swinging boom through rotatory outer handle and rotates, and outer handle swinging boom is used for connecting outer handle, outer driving lever for outer handle can drive outer driving lever through outer handle swinging boom and rotate, and outer driving lever is used for cooperating with link assembly, thereby promotes link assembly inward movement drive theftproof lock point subassembly unblock when outer driving lever inwards rotates. Wherein outer driving lever and spring bolt subassembly cooperate to outer driving lever is spacing by the spring bolt subassembly when the lock of main lock body, and outer handle also can't rotate this moment, only after the user passes through the unblock of key drive spring bolt subassembly, and spring bolt subassembly just can remove spacing to outer driving lever, has guaranteed the security when using, and outer handle swinging boom, outer driving lever all are sheltered from in the use, have guaranteed the pleasing to the eye degree when using. Similarly, when the user holds the interior handle, can rotate through handle swinging boom in the rotatory interior handle drive, thereby drive interior driving lever and rotate and promote link assembly inside shift drive theftproof lock point subassembly unblock, the rotation of interior handle swinging boom still drives interior plectrum and rotates, thereby promote spring bolt subassembly inside shift and carry out the unblock to the master lock body, and outer handle swinging boom, interior handle swinging boom rotation connection each other, the outer handle swinging boom has been guaranteed, complementary interference when interior handle swinging boom rotates separately, make the user can rotate interior handle at any time in the inboard of door.

Preferably, the rear-trigger-type door leaf interlocking structure comprises a middle transmission assembly, a lock cylinder transmission block, an unlocking shifting piece and a rotary shifting piece, wherein the rotary shifting piece is rotatably connected in the shell and is in contact with the lock tongue assembly, the lock cylinder transmission block is matched with the unlocking shifting piece and drives the unlocking shifting piece to move upwards, the unlocking shifting piece is matched with the rotary shifting piece and drives the rotary shifting piece to rotate, and the rotary shifting piece pushes the lock tongue assembly to move inwards and relieves the limit of the outer transmission assembly when rotating.

The lock cylinder transmission block is used for rotating under the control of a key, the lock unlocking shifting piece is driven to move upwards through the upward rotation of the lock cylinder transmission block, the lock unlocking shifting piece is used in cooperation with the rotary shifting piece, the rotary shifting piece is pushed to rotate inwards through the upward movement of the lock cylinder transmission block, and therefore the lock tongue assembly is pushed to move inwards through the inward rotation of the rotary shifting piece, and the limit of the lock tongue assembly to the outer transmission assembly is relieved.

Preferably, the above-mentioned back trigger formula door leaf interlocking structure, the spring bolt subassembly includes first spring bolt, first spliced pole, spacing piece, first elastic component, first spliced pole sliding connection in the casing, first elastic component sets up on first spliced pole and provides outside elastic force for first spliced pole, first lock tongue set up in first spliced pole outer end, spacing piece set up in first spliced pole is inner and right outer transmission assembly carries on spacingly, middle transmission assembly is through promoting spacing piece inward movement removes right outer transmission assembly's spacing and drive first lock tongue unblock, interior transmission assembly is through promoting spacing piece inward movement and drive first lock tongue unblock.

First spring bolt is used for locking into the door frame, make the master lock body be in locking state, first spliced pole is used for setting up first spring bolt on it, spacing piece and drive inside of whole spring bolt subassembly, outwards remove, spacing piece is used for carrying on spacingly to external drive assembly, prevent that theftproof lock from taking the outside unblock of transmission assembly outside the door of some subassembly, improve the theftproof performance of door leaf, first elastic component is used for providing outside elastic force for first spliced pole, thereby at first spring bolt, spacing piece automatic drive first spring bolt after the inward shift, spacing piece resets.

Preferably, the casing is further rotatably connected with a locking block, the connecting rod assembly is further provided with a connecting piece, the connecting piece is matched with the outer transmission assembly and the inner transmission assembly, the front end of the locking block is provided with a locking convex part, the rear end of the locking block is provided with a first unlocking block and a first elastic pushing piece connected with the casing, the connecting piece is provided with a second unlocking block matched with the first unlocking block, the middle transmission assembly pushes the limiting piece to move inwards, the limiting piece is clamped with the locking convex part to lock the spring bolt assembly, the outer transmission assembly and the inner transmission assembly drive the connecting piece to move inwards so as to drive the connecting rod assembly to move inwards, and the second unlocking block of the connecting piece drives the first unlocking block of the locking block to move and unlock the limiting piece.

The locking block arranged on the shell is used for keeping an unlocked state and not popping out outwards after a user opens the main lock body by a key through the movement of locking the limiting piece, a user can conveniently open the door leaf after unlocking the anti-theft locking point component through the outer transmission component and the inner transmission component, the connecting piece is driven by the outer transmission component or the inner transmission component to move inwards and is used for pushing the connecting rod component to unlock the anti-theft locking point component, the driving accuracy of the outer transmission component and the inner transmission component on the connecting rod component is improved, the locking convex part at the front end of the locking block is used for being clamped with the limiting piece of the lock tongue component, the locking of the locking block on the lock tongue component is realized, the first unlocking block arranged at the rear end of the locking block is used for being matched with the second unlocking block, when the connecting piece is driven by the outer transmission component and the inner transmission component to move inwards, the second unlocking block slides relative to the first unlocking block and pushes the rear end of the locking block to move towards the shell, so that the front end of the locking block provided with the locking convex part moves towards the direction far away from the shell, the clamping of the locking convex part is released, and the locking convex part can automatically return the locking spring tongue under the locking piece.

Preferably, the rear-trigger-type door leaf interlocking structure includes that the transverse link assembly includes a first connecting cross rod, a second connecting cross rod, a push rod assembly and a second elastic pushing member, the contact is disposed at the rear end of the second connecting cross rod, the front portion of the first connecting cross rod is connected with the longitudinal link assembly, the first connecting cross rod and the second connecting cross rod are connected through the push rod assembly, the second connecting cross rod provides forward pushing force for the first connecting cross rod through the push rod assembly when moving forward, and the first connecting cross rod provides backward buffering force for the second connecting cross rod through the push rod assembly and the second elastic pushing member when moving backward.

First connection horizontal pole is used for being connected with vertical link assembly, make the second connect the horizontal pole and can promote vertical link assembly through first connection horizontal pole and remove, thereby drive the locking of the theftproof lock point subassembly that sets up on the link assembly, the horizontal pole is connected to the second and is used for setting up the contact, through the door frame to setting up the extrusion drive second that sets up in the inboard contact of door leaf and connect the horizontal pole and move forward, thereby promote the forward movement of first connection horizontal pole, push rod assembly is used for receiving the promotion of second connection horizontal pole and drives first connection horizontal pole and move forward, when first connection horizontal pole moves backward, push rod assembly still is used for connecting the horizontal pole with the cooperation of second elasticity impeller and provides backward cushion power for the second, prevent that the contact from being blocked by the door frame when the door leaf is opened.

Preferably, the push rod assembly includes a bottom plate, a rotation block, and a push rod, the front end of the second connecting cross rod is provided with a connecting slot and a clamping groove, one end of the bottom plate is connected to the rear end of the first connecting cross rod, the other end of the bottom plate is connected to the connecting slot and moves back and forth in the connecting slot, one end of the rotation block is rotatably connected to the bottom plate, the other end of the rotation block is matched with the clamping groove, one end of the push rod is hinged to the rear end of the first connecting cross rod, and the other end of the push rod is hinged to the rotation block, the second elastic pushing member is respectively connected to the rear end of the first connecting cross rod and the front end of the second connecting cross rod, the second connecting cross rod is clamped to the other end of the rotation block when moving forward and provides a forward pushing force for the first connecting cross rod through the rotation block and the bottom plate, and the first connecting cross rod drives the rotation block to be separated from the clamping groove through the push rod when moving backward and provides a backward buffering force for the second connecting cross rod through the second elastic pushing member.

The bottom plate is used for connecting first connection horizontal pole, second connection horizontal pole, and the other end of bottom plate uses with the connection slot hole cooperation that sets up in the second connection horizontal pole front end, connects the horizontal pole with the second for first connection horizontal pole provides the buffering space with being connected of second. The bottom plate is also used for being hinged with the rotating block, so that the rotating block can rotate by taking the hinged part as a circle center when the first connecting cross rod and the second connecting cross rod move, the rotating block can be clamped with a clamping groove arranged at the front end of the second connecting cross rod through rotation of the rotating block, the clamping is released, the connection between the first connecting cross rod and the second connecting cross rod can be switched between rigid connection and elastic connection, when the second connecting cross rod pushes the first connecting cross rod to move forwards, the rotating block is clamped into the clamping groove, so that the first connecting cross rod and the second connecting cross rod are switched into rigid connection, the second connecting cross rod can effectively push the first connecting cross rod, when the first connecting cross rod pushes the second connecting cross rod to move backwards, the rotating block moves out the clamping groove, the first connecting cross rod and the second connecting cross rod are connected through a second elastic pushing piece, the second elastic pushing piece is the backward moving elastic force of the second connecting buffering cross rod, and the contact of a door leaf is prevented from being clamped in a door frame in the opening process, and inconvenience is brought to a user.

Preferably, the rear-triggered door leaf interlocking structure comprises an anti-theft lock point assembly arranged at the upper end or the lower end of the door leaf, the anti-theft lock point assembly comprises a first pushing plate, a second bolt, a second connecting column and a second elastic piece, the first pushing plate is connected with the end of the longitudinal connecting rod assembly, a first sliding hole is formed in the first pushing plate, the first sliding hole is obliquely arranged, the second pushing plate is located on the first pushing plate, a sliding convex column is arranged on the second pushing plate, the sliding convex column extends into the first sliding hole of the first pushing plate, the second bolt is connected with the second pushing plate through the second elastic piece, one end of the second connecting column is connected to the second pushing plate, the other end of the second connecting column extends into the second bolt, the second elastic piece is arranged on the second connecting column, two ends of the second elastic piece are respectively connected with the second bolt and the second pushing plate, the second elastic piece provides upward elastic force for the second bolt, the first pushing plate is driven to move when the first bolt moves, and the sliding convex column drives the sliding rod assembly to move up and down.

The first pushing plate is connected with the end part of the longitudinal connecting rod assembly and is used for being driven by the longitudinal connecting rod assembly to drive the first pushing plate to transversely move, the second pushing plate is connected with the first pushing plate through a sliding convex column arranged on the second pushing plate, the sliding convex column is used for being matched with the first sliding hole, when the first pushing plate transversely moves, the first pushing plate converts the outward movement of the first pushing plate into the upward movement of the second pushing plate through the first sliding hole which is obliquely arranged, the inward movement of the first pushing plate is converted into the downward movement of the second pushing plate, the second spring bolt and the second pushing plate are connected through a second elastic piece, the second pushing plate drives the locking and unlocking of the second spring bolt through the upward and downward movement of the second pushing plate, the second connecting column plays a role in guiding and supporting for the movement of the second spring bolt, the second spring bolt provides buffering for the movement of the second spring bolt to be limited by the door frame when being pressed against the door frame, when the second spring bolt moves to the position of the lock hole, the second spring bolt can be clamped into the lock hole through the second elastic piece.

Preferably, the above-mentioned back trigger formula door leaf interlocking structure, theftproof lock some subassemblies still include the lock box, be provided with the second sliding hole on the lock box, the second sliding hole sets up along vertical direction, the slip projection stretches into in the first sliding hole of first slurcam and stretches into the second sliding hole of lock box, first slurcam is through the drive the slip projection is followed first sliding hole removes and drives the slip projection and reciprocate along the second sliding hole.

The lock box is used for accommodating each part arranged on the anti-theft lock point assembly, and each part is prevented from being exposed, so that the uniformity of the anti-theft lock point assembly is enhanced. Set up the second sliding hole on the lock box and be used for injecing the removal orbit of slip convex column, improve the accurate nature of slip convex column upwards, downstream to through the locking and the unblock of the more accurate drive pickproof lock point subassembly of longitudinal link assembly.

Preferably, the above-mentioned back trigger formula door leaf interlocking structure, the theftproof lock point subassembly set up in the side of door leaf, vertical link assembly drive the theftproof lock point subassembly back-and-forth movement, the theftproof lock point subassembly includes third spring bolt, third spliced pole, third elastic component, the third spring bolt pass through the third elastic component connect in vertical link assembly is last, third spliced pole one end connect in vertical link assembly is last and the other end stretches into in the third spring bolt, the third elastic component set up on the third spliced pole and its both ends respectively with third spring bolt, vertical link assembly are connected.

The third spring bolt is arranged in locking the door frame, realize the locking of theftproof lock point subassembly, the third elastic component is used for connecting the third spring bolt, vertical link assembly, thereby through the locking and the unblock of vertical link assembly drive third spring bolt, the third spliced pole plays direction and supporting role to the removal of third spring bolt, the third elastic component is used for providing the elastic force for the reseing of third spring bolt, also can provide the cushion effect for the removal of third spring bolt simultaneously, make the removal of third spring bolt possess the buffer space.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the invention in a locked position;

FIG. 3 is a schematic view of the present invention in an unlocked position;

FIG. 4 is a schematic view of the outer side of the main lock body of the present invention;

FIG. 5 is a schematic structural view of the inside of the main lock body according to the present invention;

FIG. 6 is a first schematic structural view of the outer drive assembly, the inner drive assembly, the intermediate drive assembly, and the deadbolt assembly when the locked position is formed in accordance with the present invention;

FIG. 7 is a second schematic structural view of the outer drive assembly, the inner drive assembly, the intermediate drive assembly, and the latch bolt assembly when the locked position is formed in accordance with the present invention;

FIG. 8 is a first schematic structural view of the outer drive assembly, the inner drive assembly, the intermediate drive assembly, and the latch bolt assembly when the unlocked position is formed in accordance with the present invention;

FIG. 9 is a second schematic structural view of the outer drive assembly, the inner drive assembly, the intermediate drive assembly, and the latch bolt assembly when the unlocked position is formed in accordance with the present invention;

FIG. 10 is a top view of the primary lock body of the present invention;

FIG. 11 is an enlarged view of a portion A of FIG. 10;

FIG. 12 is a schematic view of the construction of the tappet assembly according to the present invention;

fig. 13 is a schematic structural view of the anti-theft locking point assembly provided at the upper end or the lower end of the door leaf according to the present invention;

fig. 14 is a schematic structural view of the anti-theft locking point component disposed on the side of the door leaf in the present invention.

Detailed Description

The invention will be described in further detail with reference to the following figures 1-14 and the detailed description, which are not intended to limit the invention:

example 1

As shown in fig. 1 to 14, a rear-trigger type door leaf interlocking structure includes a door leaf 2, a main lock body 4, a connecting rod assembly 5, an anti-theft locking point assembly 1, wherein the main lock body 4 is disposed on the outer side of the door leaf 2 and connected to the connecting rod assembly 5, the anti-theft locking point assembly 1 is disposed on the frame of the door leaf 2 and connected to the connecting rod assembly 5, the anti-theft locking point assembly 1 further includes a contact 7, the connecting rod assembly 5 includes a transverse connecting rod assembly 6 and a longitudinal connecting rod assembly 3 which are connected to each other, the contact 7 is disposed at the rear end of the transverse connecting rod assembly 6 and located on the inner side of the door leaf 2, the anti-theft locking point assembly 1 is disposed on the longitudinal connecting rod assembly 3, the contact 7 drives the longitudinal connecting rod assembly 3 to move outwards through the transverse connecting rod assembly 6 and drives the anti-theft locking point assembly 1 to form a locking position when locked, and the main lock body 4 drives the connecting rod assembly 5 to move inwards and drives the anti-theft locking point assembly 1 to unlock.

During the use, as shown in fig. 2, this moment door leaf 2 is in the locking position, and when needing to open door leaf 2, insert the key into the main lock body 4 and unblock main lock body 4, then main lock body 4 drives vertical link assembly 3 and inwards removes thereby drive theftproof lock point subassembly 1 unblock, and vertical link assembly 3 drives contact 7 through horizontal link assembly 6 and stretches out when inwards removing, thereby forms the unblock position as shown in fig. 3. When the door leaf 2 needs to be closed, a user pushes the door leaf 2 to be closed into the door frame, and at the moment, the contact 7 is extruded by the door frame to drive the transverse connecting rod assembly 6 to move outwards, so that the transverse connecting rod assembly 6 drives the longitudinal connecting rod assembly 3 to move outwards and drives the anti-theft locking point assembly 1 to be locked into the door frame, and a locking position is formed as shown in fig. 2. Through the structure, the locking driving function of the anti-theft locking point component 1 is transferred to the transverse connecting rod component 6, the longitudinal connecting rod component 3 and the contact 7, so that the structural complexity of the main lock body 4 and the pressure born by the main lock body 4 are greatly reduced, and the service life of the main lock body 4 is prolonged and shortened.

Preferably, the main lock body 4 includes a housing 41, an outer transmission assembly 44, an inner transmission assembly 45, an intermediate transmission assembly 42, and a latch bolt assembly 43, the outer transmission assembly 44 and the inner transmission assembly 45 are respectively located at two sides of the housing 41 and are respectively rotatably connected to the housing 41, the intermediate transmission assembly 42 and the latch bolt assembly 43 are respectively located in the housing 41 and partially exposed outside the housing 41, the outer transmission assembly 44 is in contact with the latch bolt assembly 43 and is limited by the latch bolt assembly 43, the intermediate transmission assembly 42 and the inner transmission assembly 45 are matched with the latch bolt assembly 43, when the intermediate transmission assembly 42 drives the latch bolt assembly 43 to move inward, the limit on the outer transmission assembly 44 is released, when the inner transmission assembly 45 drives the latch bolt assembly 43 to move inward, the main lock body 4 is unlocked, and when the outer transmission assembly 44 and the inner transmission assembly 45 drive the link assembly 5 to move inward and drive the anti-theft lock point assembly 1 to unlock, the unlocking position is formed.

Preferably, the outer transmission assembly 44 includes an outer handle 441, an outer handle rotation arm 443, and an outer driving lever 442, the inner transmission assembly 45 includes an inner handle 451, an inner handle rotation arm 453, an inner driving lever 452, and an inner driving plate 454, the outer handle rotation arm 443 and the inner handle rotation arm 453 are rotatably connected to each other and respectively rotatably connected to the housing 41, the outer driving lever 442 is engaged with the outer handle rotation arm 443 and is coupled to the link assembly 5, the outer handle 441 is coupled to the outer handle rotation arm 443 and drives the outer driving lever 442 to rotate through the outer handle rotation arm 443, the outer driving lever 442 is engaged with the latch bolt assembly 43, the inner driving lever 452 is engaged with the inner handle rotation arm 453 and is engaged with the link assembly 5, the inner driving plate 454 is engaged with the inner handle rotation arm 453, the inner handle 451 is connected to the inner handle rotation arm 453 and drives the inner driving lever 452 and the inner driving plate 454 to rotate, the latch bolt assembly 43 to move inward when the outer driving lever 452 and the inner driving lever 5 to rotate, thereby driving the latch bolt assembly 1.

Preferably, the intermediate transmission assembly 42 includes a lock cylinder transmission block 423, an unlocking moving piece 422 and a rotary moving piece 421, the rotary moving piece 421 is rotatably connected in the housing 41 and contacts with the lock bolt assembly 43, the lock cylinder transmission block 423 is matched with the unlocking moving piece 422 and drives the unlocking moving piece 422 to move upwards, the unlocking moving piece 422 is matched with the rotary moving piece 421 and drives the rotary moving piece 421 to rotate, and the rotary moving piece 421 pushes the lock bolt assembly 43 to move inwards and releases the limit of the outer transmission assembly 44 when rotating.

Preferably, the latch bolt assembly 43 includes a first latch bolt 434, a first connection column 433, a limiting piece 431 and a first elastic member 432, the first connection column 433 is slidably connected in the housing 41, the first elastic member 432 is disposed on the first connection column 433 and provides an outward elastic force for the first connection column 433, the first latch bolt 434 is disposed at an outer end of the first connection column 433, the limiting piece 431 is disposed at an inner end of the first connection column 433 and limits the outer transmission assembly 44, the middle transmission assembly 42 releases the limitation on the outer transmission assembly 44 by pushing the limiting piece 431 to move inward and drives the first latch bolt 434 to unlock, and the inner transmission assembly 45 releases the unlocking by pushing the limiting piece 431 to move inward and drives the first latch bolt 434.

Preferably, the housing 41 is further rotatably connected with a locking block 46, the link assembly 5 is further provided with a connecting piece 51, the connecting piece 51 is matched with the outer transmission assembly 44 and the inner transmission assembly 45, the front end of the locking block 46 is provided with a locking protrusion 462, the rear end of the locking block 46 is provided with a first unlocking block 461 and a first elastic pushing piece 463 connected with the housing 41, the connecting piece 51 is provided with a second unlocking block 511 matched with the first unlocking block 461, when the middle transmission assembly 42 pushes the limiting plate 431 to move inwards, the limiting plate 431 is engaged with the locking protrusion 462 and locks the latch bolt assembly 43, and when the outer transmission assembly 44 and the inner transmission assembly 45 drive the connecting piece 51 to move inwards to drive the link assembly 5, the second unlocking block 511 of the connecting piece 51 drives the first unlocking block 461 of the locking block 46 to move and unlock the limiting plate 431.

Preferably, the transverse link assembly 6 includes a first connecting cross rod 61, a second connecting cross rod 62, a push rod assembly 63, and a second elastic pushing member 64, the contact 7 is disposed at a rear end of the second connecting cross rod 62, a front portion of the first connecting cross rod 61 is connected to the longitudinal link assembly 3, the first connecting cross rod 61 and the second connecting cross rod 62 are connected by the push rod assembly 63, the second connecting cross rod 62 provides a forward pushing force for the first connecting cross rod 61 through the push rod assembly 63 when moving forward, and the first connecting cross rod 61 provides a backward buffering force for the second connecting cross rod 62 through the push rod assembly 63 and the second elastic pushing member 64 when moving backward.

Preferably, the push rod assembly 63 includes a bottom plate 631, a rotating block 632, and a push rod 633, the front end of the second connecting cross rod 62 is provided with a connecting slot 621 and a clamping groove 622, one end of the bottom plate 631 is connected to the rear end of the first connecting cross rod 61, the other end of the bottom plate 631 is connected to the connecting slot 621 and moves back and forth in the connecting slot 621, one end of the rotating block 632 is rotatably connected to the bottom plate 631 and the other end of the rotating block is matched with the clamping groove 622, one end of the push rod 633 is hinged to the rear end of the first connecting cross rod 61 and the other end of the push rod 633 is hinged to the rotating block 632, the second elastic pushing member 64 is respectively connected to the rear end of the first connecting cross rod 61 and the front end of the second connecting cross rod 62, the second connecting cross rod 62 is clamped to the other end of the rotating block 632 when moving forward and provides a forward pushing force for the first connecting cross rod 61 through the rotating block 632 and the bottom plate 631, and the first connecting cross rod 61 drives the rotating block 632 to separate from the clamping groove 622 through the push rod 633 when moving backward and provides a backward buffering force for the second connecting cross rod 62 through the second elastic pushing member 64.

Preferably, the anti-theft lock point assembly 1 is disposed at an upper end or a lower end of the door leaf 2, the anti-theft lock point assembly 1 includes a first pushing plate 14, a second pushing plate 15, a second bolt 11, a second connecting column 12, and a second elastic member 13, the first pushing plate 14 is connected to an end of the longitudinal connecting rod assembly 3, the first pushing plate 14 is provided with a first sliding hole 141, the first sliding hole 141 is obliquely disposed, the second pushing plate 15 is disposed on the first pushing plate 14, the second pushing plate 15 is provided with a sliding protruding column 151, the sliding protruding column 151 extends into the first sliding hole 141 of the first pushing plate 14, the second bolt 11 is connected to the second pushing plate 15 through the second elastic member 13, one end of the second connecting column 12 is connected to the second pushing plate 15, the other end of the second connecting column 12 extends into the second bolt 11, the second elastic member 13 is disposed on the second connecting column 12, and two ends of the second elastic member are respectively connected to the second bolt 11 and the second pushing plate 15, the second elastic member 13 provides a driving force for the second bolt 11 to move up and down the sliding protruding column 141, and the second pushing plate 14 moves up and down, and the second pushing plate 14 moves.

Preferably, the anti-theft lock point assembly 1 further includes a lock box 16, the lock box 16 is provided with a second sliding hole 161, the second sliding hole 161 is disposed along a vertical direction, the sliding convex column 151 extends into the first sliding hole 141 of the first pushing plate 14 and extends into the second sliding hole 161 of the lock box 16, and the first pushing plate 14 drives the sliding convex column 151 to move along the first sliding hole 141 and drive the sliding convex column 151 to move up and down along the second sliding hole 161 by driving the sliding convex column 151.

Preferably, the anti-theft lock point assembly 1 is arranged on the side of the door leaf 2, the longitudinal connecting rod assembly 3 drives the anti-theft lock point assembly 1 to move back and forth, the anti-theft lock point assembly 1 comprises a third bolt 19, a third connecting column 18 and a third elastic member 17, the third bolt 19 is connected to the longitudinal connecting rod assembly 3 through the third elastic member 17, one end of the third connecting column 18 is connected to the longitudinal connecting rod assembly 3, the other end of the third connecting column extends into the third bolt 19, and the third elastic member 17 is arranged on the third connecting column 18, and two ends of the third connecting column 17 are respectively connected with the third bolt 19 and the longitudinal connecting rod assembly 3.

Specifically, when the door leaf 2 is in the locking position and the user needs to open the door leaf 2 outdoors, the key is inserted into the intermediate transmission assembly 42, the key is rotated to drive the lock cylinder transmission block 423 to rotate, when the lock cylinder transmission block 423 rotates, the unlocking poking piece 422 is pushed to move upwards as shown in fig. 8 and 9, the unlocking poking piece 422 pushes the rotary poking piece 421 to rotate inwards by moving upwards, so that the limiting piece 431 is pushed to move inwards, and the limiting piece 431 is enabled to release the limiting of the external poking rod 442. And when the stopper 431 moves inward, the stopper 431 will pass over the locking protrusion 462 at the front end of the locking block 46 and be stopped by the locking protrusion 462 as shown in fig. 11, and at this time, the force of the locking protrusion 462 to the stopper 431 is greater than the restoring force provided by the first elastic member 432 to the first connection column 433 and the stopper 431, so that the entire latch bolt assembly 43 will be maintained at the inward retracted position, thereby facilitating the user to operate the external transmission assembly 44.

After the outer driving lever 442 can rotate freely, a user holds the outer handle 441 and rotates the outer handle 441, and the outer handle 441 drives the outer handle rotating arm 443 to rotate synchronously, so as to drive the outer driving lever 442 connected with the outer handle to rotate inwards and push the connecting piece 51 to drive the longitudinal connecting rod assembly 3 to move inwards and drive the anti-theft locking point assembly 1 to form an unlocking position. For the anti-theft lock point assembly 1 located at the upper end or the lower end of the door leaf 2, as shown in fig. 13, the longitudinal link assembly 3 drives the first pushing plate 14 to move backward, and the first pushing plate 14 pushes the sliding convex column 151 to move toward the inner side of the door leaf 2 in the second sliding hole 161 and the obliquely arranged first sliding hole 141, so that the sliding convex column 151 drives the second pushing plate 15 to move toward the inner side of the door leaf 2, and the second elastic member 13 drives the second lock tongue 11 to retract inward along the second connecting column 12, thereby unlocking the door frame. For the anti-theft locking point assembly 1 located at the side of the door 2, as shown in fig. 14, the longitudinal connecting rod assembly 3 drives the third connecting column 18 to move backward, so that the third bolt 19 moves out of the door 2 along the third connecting column 18 by the third elastic member 17 to form an unlocking position. After the anti-theft locking point assembly 1 is completely unlocked, the door leaf 2 can be rotated outwards, at this time, the outer handle 441 is continuously rotated and the connecting piece 51 is pushed inwards by the outer driving lever 442, as shown in fig. 10, the second unlocking block 511 on the connecting piece 51 will touch the first unlocking block 461 at the rear end of the locking block 46 and push the first unlocking block 461 towards the housing 41, the locking protrusion 462 at the front end of the locking block 46 will be far away from the housing 41 and unlock the limiting piece 431, and at this time, the whole locking tongue assembly 43 will automatically extend outwards under the action of the elastic restoring force of the first elastic piece 432, which is more humanized.

In the process that the longitudinal link assembly 3 moves inward, the first connecting cross bar 61 on the transverse link assembly 6 is also synchronously driven to move inward, because the push rod 633 is respectively hinged with the first connecting cross bar 61 and the rotating block 632, as shown in fig. 12, the first connecting cross bar 61 will make the rotating block 632 expand outward through the push rod 633, the other end of the rotating block 632 moves out of the clamping groove 622, at this time, the first connecting cross bar 61 and the second connecting cross bar 62 are connected through the bottom plate 631 and the second elastic pushing member 64, the first connecting cross bar 61 applies a thrust to the second elastic pushing member 64 and applies an elastic buffering force to the second connecting cross bar 62 through the second elastic pushing member 64, and the second connecting cross bar 62 moves backward, so as to drive the contact 7 to extend out. After the anti-theft lock point assembly 1 forms the unlocking position, the contact 7 may be pressed by the door leaf 2 in the process that the user opens the door leaf 2, and at the moment, the second connecting cross rod 62 presses the second elastic pushing piece 64 and retracts within the length range of the connecting long hole 621, so that a buffer space is provided for the contact 7, the contact 7 is prevented from being damaged excessively under stress, and the service life of the contact 7 is further prolonged. After the door 2 is completely opened, the outer handle 441 is released, and the door 2 is completely opened.

When the door leaf 2 needs to be closed, a user pushes the door leaf 2 to close the door leaf 2 and the door frame, when the door leaf is closed, the contact 7 is pressed by the door frame and moves towards the main lock body 4, as shown in fig. 12, the contact 7 drives the second connecting cross rod 62 to move forward, so that the first connecting cross rod 61 is pushed to move forward slightly through the second elastic pushing piece 64, the rotating block 632 is pushed to rotate inward through the push rod 633 and is closed and clamped into the clamping groove 622 of the second connecting cross rod 62 in the forward moving process of the first connecting cross rod 61, so that the first connecting cross rod 61 and the second connecting cross rod 62 are connected through the rotating block 632, at the moment, the second elastic pushing piece 64 continues to move forward and pushes the first connecting cross rod 61 to move forward through the rotating block 632, and the longitudinal connecting rod assembly 3 is driven to move forward and drive the anti-theft locking point assembly 1 to form a locking position. Then, for the anti-theft lock point assembly 1 located at the upper end or the lower end of the door leaf 2, as shown in fig. 13, the longitudinal link assembly 3 drives the first pushing plate 14 to move forward, so that the first pushing plate 14 pushes the sliding protruding column 151 to move toward the outer side of the door leaf 2 in the second sliding hole 161 and the obliquely arranged first sliding hole 141, so that the second pushing plate 15 drives the second elastic member 13 and the second lock tongue 11 to move outward, if the door leaf 2 is not completely closed at this time, the edge of the second lock tongue 11 is temporarily pressed against the door frame, and after the door leaf 2 is completely closed, the second lock tongue 11 is clamped into the corresponding lock hole of the door frame by the elastic force of the second elastic member 13, so as to lock the door leaf 2. For the anti-theft locking point assembly 1 located on the side of the door leaf 2, as shown in fig. 14, the longitudinal connecting rod assembly 3 drives the third elastic member 17 connected with the third bolt 19 to move forward, so that the third bolt 19 moves out of the door leaf 2, similarly, if the door leaf 2 is not completely closed at this time, the edge of the third bolt 19 is temporarily pressed against the door frame, and after the door leaf 2 is completely closed, the third bolt 19 is clamped into the corresponding lock hole of the door frame by the elastic force of the third elastic member 17, so as to lock the door leaf 2. Therefore, in the locking process of the door leaf 2, the anti-theft locking point component 1 can be locked through the transmission of the contact 7 without performing additional operation on the main lock body 4, so that the use times and pressure of the main lock body 4 are reduced, and the service life of the main lock body 4 is prolonged.

In addition, when the user needs to open the door leaf 2 in the door, the user can directly hold the inner handle 451 and rotate the inner handle 451, and then the inner handle 451 drives the inner handle rotating arm 453 to rotate synchronously, so as to drive the inner driving lever 452 connected with the inner handle rotating arm to rotate inwards, and because the inner driving lever 452 is not limited by the limiting piece 431, the inner driving lever 452 can directly push the connecting piece 51 to move inwards and drive the connecting rod assembly 5 to move inwards, so as to drive the anti-theft locking point assembly 1 to form an unlocking position. The rotation of interior handle swinging boom 453 is still interior plectrum 454 of synchronous drive and is inwards rotated for with interior plectrum 454 promote the spacing piece 431 of bolt assembly 43 inwards to remove, unblock main lock body 4, thereby let the user open door leaf 2 at any time in the door, promoted the convenience when using.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a back triggers formula door leaf interlocking structure, includes door leaf (2), main lock body (4), link assembly (5), theftproof lock point subassembly (1), main lock body (4) set up in the door leaf (2) outside and with link assembly (5) are connected, theftproof lock point subassembly (1) set up in door leaf (2) frame and with link assembly (5) are connected its characterized in that: the anti-theft lock is characterized by further comprising a contact (7), the connecting rod assembly (5) comprises a transverse connecting rod assembly (6) and a longitudinal connecting rod assembly (3) which are connected with each other, the contact (7) is arranged at the rear end of the transverse connecting rod assembly (6) and located on the inner side of the door leaf (2), the anti-theft lock point assembly (1) is arranged on the longitudinal connecting rod assembly (3), the contact (7) drives the longitudinal connecting rod assembly (3) to move outwards through the transverse connecting rod assembly (6) and drives the anti-theft lock point assembly (1) to form a locking position when locked, and the main lock body (4) drives the connecting rod assembly (5) to move inwards and drives the anti-theft lock point assembly (1) to form an unlocking position when unlocked; the main lock body (4) comprises a shell (41), an outer transmission assembly (44), an inner transmission assembly (45), an intermediate transmission assembly (42) and a bolt assembly (43), wherein the outer transmission assembly (44) and the inner transmission assembly (45) are respectively positioned on two sides of the shell (41) and are respectively and rotatably connected to the shell (41), the intermediate transmission assembly (42) and the bolt assembly (43) are respectively positioned in the shell (41) and partially exposed out of the shell (41), the outer transmission assembly (44) is in contact with the bolt assembly (43) and limited by the bolt assembly (43), the intermediate transmission assembly (42) and the inner transmission assembly (45) are matched with the bolt assembly (43), when the bolt assembly (43) is driven by the intermediate transmission assembly (42) to move inwards, the limit on the outer transmission assembly (44) is released, when the bolt assembly (43) is driven by the inner transmission assembly (45) to move inwards, the main lock body (4) is unlocked, and when the outer transmission assembly (44) and the inner transmission assembly (45) drive the bolt assembly (43) to move inwards and drive the unlocking point (1) to form an unlocking position; the transverse connecting rod assembly (6) comprises a first connecting cross rod (61), a second connecting cross rod (62), a push rod assembly (63) and a second elastic pushing piece (64), the contact (7) is arranged at the rear end of the second connecting cross rod (62), the front part of the first connecting cross rod (61) is connected with the longitudinal connecting rod assembly (3), the first connecting cross rod (61) and the second connecting cross rod (62) are connected through the push rod assembly (63), the second connecting cross rod (62) provides forward pushing force for the first connecting cross rod (61) through the push rod assembly (63) when moving forwards, and the first connecting cross rod (61) provides backward buffering force for the second connecting cross rod (62) through the push rod assembly (63) and the second elastic pushing piece (64) when moving backwards.

2. A rear trigger door leaf interlock according to claim 1, wherein: the outer transmission component (44) comprises an outer handle (441), an outer handle rotating arm (443) and an outer driving lever (442), the inner transmission component (45) comprises an inner handle (451), an inner handle rotating arm (453), an inner driving lever (452) and an inner driving sheet (454), the outer handle rotating arm (443) and the inner handle rotating arm (453) are mutually and rotatably connected to the shell (41) respectively, the outer driving lever (442) is clamped on the outer handle rotating arm (443) and matched with the connecting rod component (5), the outer handle (441) is connected with the outer handle rotating arm (443) and drives the outer driving lever (442) to rotate through the outer handle rotating arm (443), the outer driving lever (442) is matched with the bolt assembly (43), the inner driving lever (452) is clamped on the inner handle rotating arm (453) and matched with the connecting rod assembly (5), the inner shifting piece (454) is clamped on the inner handle rotating arm (453), the inner handle (451) is connected with the inner handle rotating arm (453) and drives the inner driving lever (452) and the inner shifting piece (454) to rotate through the inner handle rotating arm (453), the inner shifting piece (454) pushes the bolt assembly (43) to move inwards when rotating, the outer driving lever (442), when the inner shifting rod (452) rotates, the connecting rod assembly (5) is driven to move inwards, and therefore the anti-theft locking point assembly (1) is driven to be unlocked.

3. A rear trigger door leaf interlock according to claim 1, wherein: the middle transmission assembly (42) comprises a lock cylinder transmission block (423), an unlocking shifting piece (422) and a rotary shifting piece (421), the rotary shifting piece (421) is rotatably connected in the shell (41) and is in contact with the lock bolt assembly (43), the lock cylinder transmission block (423) is matched with the unlocking shifting piece (422) and drives the unlocking shifting piece (422) to move upwards, the unlocking shifting piece (422) is matched with the rotary shifting piece (421) and drives the rotary shifting piece (421) to rotate, and the rotary shifting piece (421) pushes the lock bolt assembly (43) to move inwards and releases the limit of the outer transmission assembly (44) when rotating.

4. A rear trigger door leaf interlock according to claim 1, wherein: spring bolt subassembly (43) include first spring bolt (434), first spliced pole (433), spacing piece (431), first elastic component (432), first spliced pole (433) sliding connection in casing (41), first elastic component (432) set up on first spliced pole (433) and provide outside elastic force for first spliced pole (433), first spring bolt (434) set up in first spliced pole (433) outer end, spacing piece (431) set up in first spliced pole (433) inner and right outer transmission subassembly (44) carry on spacingly, middle transmission subassembly (42) are through promoting spacing piece (431) inwards move relieve right outer transmission subassembly (44) spacing and drive first spring bolt (434) unblock, interior transmission subassembly (45) are through promoting spacing piece (431) inwards move and drive first spring bolt (434) unblock.

5. A rear trigger door leaf interlock according to claim 4, wherein: the locking mechanism is characterized in that a locking block (46) is further rotatably connected to the shell (41), a connecting piece (51) is further arranged on the connecting rod assembly (5), the connecting piece (51) is matched with the outer transmission assembly (44) and the inner transmission assembly (45), a locking convex part (462) is arranged at the front end of the locking block (46), a first unlocking block (461) and a first elastic pushing piece (463) connected with the shell (41) are arranged at the rear end of the locking block (46), a second unlocking block (511) matched with the first unlocking block (461) is arranged on the connecting piece (51), when the middle transmission assembly (42) pushes the limiting piece (431) to move inwards, the limiting piece (431) is clamped with the locking convex part (462) to lock the bolt assembly (43), the outer transmission assembly (44) and the inner transmission assembly (45) drive the connecting piece (51) to move inwards so as to drive the connecting rod assembly (5) to move inwards, and when the first unlocking block (46) of the second unlocking block (51) of the connecting piece (51) drives the limiting piece (431) to unlock the limiting piece (431) and unlock the connecting rod assembly (5) to unlock the connecting piece (511).

6. A rear trigger door leaf interlock according to claim 1, wherein: the push rod component (63) comprises a bottom plate (631), a rotating block (632) and a push rod (633), the front end of the second connecting cross bar (62) is provided with a connecting long hole (621) and a clamping groove (622), one end of the bottom plate (631) is connected to the rear end of the first connecting rail (61), the other end of the bottom plate (631) is connected to the long connecting hole (621) and moves back and forth in the long connecting hole (621), one end of the rotating block (632) is rotatably connected to the bottom plate (631) and the other end is matched with the clamping groove (622), one end of the push rod (633) is hinged at the rear end of the first connecting cross rod (61) and the other end is hinged on the rotating block (632), the second elastic pushing piece (64) is respectively connected with the rear end of the first connecting cross rod (61) and the front end of the second connecting cross rod (62), when the second connecting cross rod (62) moves forwards, the second connecting cross rod is clamped with the other end of the rotating block (632) and provides forward pushing force for the first connecting cross rod (61) through the rotating block (632) and the bottom plate (631), when the first connecting cross rod (61) moves backwards, the rotating block (632) is driven to be separated from the clamping groove (622) through the push rod (633) and a backward buffering force is provided for the second connecting cross rod (62) through the second elastic pushing piece (64).

7. A rear trigger door leaf interlock according to claim 1, wherein: the anti-theft lock point assembly (1) is arranged at the upper end or the lower end of the door leaf (2), the anti-theft lock point assembly (1) comprises a first pushing plate (14), a second pushing plate (15), a second bolt (11), a second connecting column (12) and a second elastic piece (13), the first pushing plate (14) is connected with the end part of the longitudinal connecting rod assembly (3), a first sliding hole (141) is formed in the first pushing plate (14), the first sliding hole (141) is obliquely arranged, the second pushing plate (15) is positioned on the first pushing plate (14), a sliding convex column (151) is arranged on the second pushing plate (15), the sliding convex column (151) extends into the first sliding hole (141) of the first pushing plate (14), the second bolt (11) is connected with the second pushing plate (15) through the second elastic piece (13), one end of the second connecting column (12) is connected with the second pushing plate (15) and the other end of the second bolt (11) extends into the second elastic piece (13), the second connecting column (11) is connected with the second pushing plate (13) through the elastic piece (13), and the elastic piece (13) is arranged on the second pushing plate (15) and drives the second connecting column (13) to move, and the second bolt (13) and the elastic piece (13) is connected with the elastic piece (13) when the second connecting rod assembly (13) moves upwards, when the first pushing plate (14) moves, the second lock tongue (11) is driven to move up and down through the sliding convex column (151) and the first sliding hole (141).

8. A rear trigger door leaf interlock according to claim 7, wherein: theftproof lock point subassembly (1) still includes lock box (16), be provided with second sliding hole (161) on lock box (16), second sliding hole (161) set up along vertical direction, slip projection (151) stretch into in first sliding hole (141) of first slurcam (14) and stretch into second sliding hole (161) of lock box (16), first slurcam (14) are through the drive slip projection (151) are followed first sliding hole (141) remove and drive slip projection (151) and reciprocate along second sliding hole (161).

9. A rear trigger door leaf interlock according to claim 1, wherein: the anti-theft lock point component (1) is arranged on the side edge of the door leaf (2), the longitudinal connecting rod assembly (3) drives the anti-theft lock point component (1) to move back and forth, the anti-theft lock point component (1) comprises a third bolt (19), a third connecting column (18) and a third elastic piece (17), the third bolt (19) is connected onto the longitudinal connecting rod assembly (3) through the third elastic piece (17), one end of the third connecting column (18) is connected onto the longitudinal connecting rod assembly (3) and the other end of the third connecting column extends into the third bolt (19), and the third elastic piece (17) is arranged on the third connecting column (18) and two ends of the third elastic piece are respectively connected with the third bolt (19) and the longitudinal connecting rod assembly (3).