Clutch transmission device applied to intelligent door lock

Abstract

A clutch transmission device applied to an intelligent door lock is matched with a handle, a clutch motor or a mechanical lock cylinder, drives a door lock cylinder through a flat rod and drives a door lock body through square steel and comprises a bottom shell component, a cover plate component, a clutch component, a lock cylinder driving component and an inclined tongue driving component. The clutch component, the lock cylinder driving component and the latch bolt driving component are respectively assembled on the bottom shell component and are limited and fixed by the cover plate component; the clutch component is used for a transmission transfer component responsible for clutch, the clutch component is directly connected with the handle, matched with the lock cylinder driving component and the latch bolt driving component and responsible for clutch action and transfer transmission between the handle and the lock cylinder driving component and between the handle and the latch bolt driving component, and the clutch component achieves clutch action through a clutch motor or a mechanical lock cylinder. And meanwhile, the clutch component has no conditional support on mechanical linkage required by lifting and locking the handle. According to the invention, the non-destructive installation of the intelligent door lock is effectively realized, and the universality is good.

Description

Technical Field

[0001] The invention belongs to the field of locks and relates to a clutch transmission device applied to an intelligent door lock. Background Art

[0002] The basic principle of smart locks is that the electronic module authenticates the legitimacy of door opening and then controls the closing and separation of the clutch, and mechanical transmission components can mechanically open the door when the clutch is closed, and mechanical transmission cannot be achieved when the clutch is separated, and thus the door cannot be opened. The clutch and mechanical transmission components are the core components of the coordinated work of electronic components and mechanical components in smart door locks, and are the key core technologies in the design of smart door locks.

[0003] At present, the replacement, market popularization and after-sales service of smart locks are the industry difficulties in the field of smart door locks; first, there are many types of mechanical lock bodies on the market, and there is no unified standard for the position and size specifications of square steel. Secondly, the lock body and the door are compatible with each other, and the hole positions on the door often vary according to the lock body. Therefore, when replacing the lock body, in most cases, the door needs to be re-drilled for the new lock body, which brings great technical requirements and installation risks to the installation of smart locks. What's more, the position and size of the lock tongue insertion hole on the door frame must also be adjusted according to the corresponding lock body. This installation method that destroys the original structure of the door and door frame due to the replacement of the lock body is called "destructive" installation in the industry; secondly, the lack of standards, wide variety and incompatibility of door locks cause users to not know how to choose before sale. At present, smart locks require consumers to provide various door lock data during the sales process, and the additional cost in sales. The information gap makes it relatively difficult for smart door locks to become popular in the replacement market; secondly, this "destructive" installation and high installation requirements have caused difficulties in the after-sales service of smart locks. As an irreversible operation, the "destructive" installation will cause serious sales disputes if there is a slight mistake. The high installation requirements make the company's personnel training costs extremely high. Currently, no smart door lock manufacturer has established a large-scale after-sales network, and all of them are outsourced to third-party locksmiths, which aggravates the after-sales problem. According to statistics, up to 70% of smart lock problems are not due to problems with the smart locks themselves, but due to incompatible door locks, "destructive" installation, and unsatisfactory installation. At a time when online sales models are prevalent, smart door locks, which are a complete product consisting of product + installation + after-sales, are in urgent need of a smart door lock product that can adapt to online sales, support user self-installation, and adapt to most original door lock bodies.

[0004] How to achieve the adaptation of smart door locks and original door lock bodies of different sizes and functions, and support "non-destructive" user self-installation of smart door locks, will be an important issue for smart door locks to change the existing sales model and overcome the difficulties in market popularization. Summary of the invention

[0005] In order to overcome the shortcomings of "destructive" installation, poor adaptability and inability of users to install by themselves when replacing existing smart door locks, the present invention provides a clutch transmission device for smart door locks that can achieve "non-destructive" installation, has good compatibility and can be installed by users by themselves.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A clutch transmission device applied to an intelligent door lock, the clutch transmission device cooperates with a handle, a clutch motor or a mechanical lock core respectively, and drives the lock core on the door through a flat rod and drives the lock body on the door through a square steel, the clutch transmission device comprises a bottom shell component, a cover plate component, a clutch component, a lock core driving component and a tilted tongue driving component, the clutch component, the lock core driving component and the tilted tongue driving component are respectively assembled on the bottom shell component and are limited and fixed by the cover plate component;

[0008] The clutch component is used as a transmission transfer component for clutching. The clutch component is directly connected to the handle and cooperates with the lock core driving component and the oblique tongue driving component respectively, and is responsible for the clutch action and transfer transmission between the handle and the lock core driving component and the oblique tongue driving component. The clutch component realizes the clutch action through the clutch motor or the mechanical lock core. At the same time, the clutch component unconditionally supports the mechanical linkage required for the handle to lift and close the lock.

[0009] The lock core driving member is composed of a group of gears meshing with internal teeth, and the rotation of the handle transferred from the clutch member is transmitted to the door lock core through the flat rod at a certain ratio of speed change, so that the dial head of the door lock core rotates and drives the extension and retraction of the square tongue of the door lock body;

[0010] The oblique bolt driving component is composed of two groups of connecting rod structures and a square steel rotating head, and the rotation of the handle turned from the clutch component is transmitted to the oblique bolt of the lock body on the door through the square steel.

[0011] Further, the bottom shell component includes a device bottom shell and a handle balancing torsion spring. The device bottom shell is provided with a clutch base assembly through hole, an output gear assembly through hole, a square steel rotating head assembly through groove, a torsion spring limiting convex ring, two torsion spring balancing convex heads, a handle limiting convex block and a latch push plate assembly groove. The clutch base assembly through hole serves as the limiting hole of the clutch component, the output gear assembly through hole serves as the limiting hole of the lock core driving component, the square steel rotating head assembly through groove serves as the limiting groove of the oblique tongue driving component, and the clutch base assembly through hole serves as the limiting hole of the clutch component. The hole is used as a reference, the square steel rotating head assembly groove is located directly above the clutch base assembly hole, the output gear assembly hole is located directly below the clutch base assembly hole, the torsion spring limiting convex ring is an inner extension convex ring of the clutch base assembly hole, the two torsion spring balancing convex heads are respectively located on the left and right sides of the clutch base assembly hole, the handle limiting convex block is located between the clutch base assembly hole and the output gear assembly hole, and the latch push plate assembly groove is located on both sides of the output gear assembly hole;

[0012] The handle balance torsion spring is sleeved on the torsion spring limiting convex ring, and two legs of the handle balance torsion spring are respectively hung on the two torsion spring balance convex heads of the device bottom shell.

[0013] Furthermore, the clutch component includes a clutch base, a clutch transmission component, two latches, two groups of latch reset springs, two latch cover plates and a latch push plate; the clutch base is the main attached part of the other parts of the clutch component, the two latches, the two groups of latch reset springs and the two latch cover plates are assembled on the clutch base to form two groups of vertically symmetrical resettable latch structures, and cooperate with the clutch transmission component to form a vertically symmetrical resettable latch clutch structure, the latch push plate is assembled on the latch push plate assembly groove of the bottom shell of the device, and the latch push plate is the intermediate transmission part that enables the clutch motor or the mechanical lock core to act on the latch.

[0014] Furthermore, the clutch component also includes a reversing screw, a lower bearing and an upper flange bearing; the front of the clutch base is provided with two latch grooves, two latch cover plate grooves, two groups of latch cover plate screw holes, a transmission member position concave ring, two arc-shaped clutch protrusions and a reversing threaded through hole; the bottom surface of the clutch base is provided with a handle connecting head, a handle connecting through hole and a handle balancing protrusion; the latch push plate is a special-shaped sheet metal part, the upper side is provided with an arc edge, the left and right sides are respectively provided with travel limit concave edges, the lower side is provided with a motor connecting hook, and the middle is provided with a avoidance hole; the front side of the clutch transmission member is provided with a gear position convex ring, a gear shift head, two pull rod heads and two arc-shaped lifting concave positions, a limit through hole is provided in the middle, and the reverse side is provided with two balancing feet and two arc-shaped clutch protrusions;

[0015] The two latches are two cross-shaped iron sheets, and the two arms of the latch have a limiting function. At the same time, the two arms of the latch cooperate with a group of latch reset springs to play a resetting role. The two latches and the two groups of latch reset springs are respectively embedded in the two latch grooves of the clutch base, and the two latch cover plates are respectively assembled in the two latch cover plate grooves of the clutch base and fixed with screws, which play a limiting role for the latch and the latch reset spring. The reversing screw is assembled in the reversing threaded through hole of the clutch base, and the reversing screw is relatively long. The part of the reversing screw extending out of the clutch base and the handle balance convex head of the clutch base are symmetrically positioned. The handle connecting head of the base is assembled with the lower bearing, and the handle connecting head and the inner ring of the lower bearing are tightly matched; the handle connecting head of the clutch base is inserted into the clutch base assembly through hole of the device bottom shell, and the outer ring of the lower bearing and the clutch base assembly through hole of the device bottom shell are tightly matched. At this time, the part of the reversing screw extending out of the clutch base and the handle balancing convex head of the clutch base are respectively matched with the two legs of the handle balancing torsion spring. At the same time, the part of the reversing screw extending out of the clutch base, the handle balancing convex head of the clutch base and the two torsion spring balancing convex heads of the device bottom shell are respectively located on the same side of the two legs of the handle balancing torsion spring and on the same horizontal line;

[0016] The latch push plate is assembled on the latch push plate assembly groove of the device bottom shell, and is limited by four screws installed on the device bottom shell with nuts. The four screws are in the travel limit concave edge of the latch push plate, so that the latch push plate can only move up and down within the travel. The position of the latch push plate relative to the device bottom shell is consistent with the position of the latch relative to the device bottom shell. The arc edge of the latch push plate is directly opposite to the latch. The motor connecting hook of the latch push plate is hung with the push plate of the clutch motor, and the latch push plate is also matched with the mechanical lock core.

[0017] The clutch transmission member is sleeved on the two arc-shaped clutch protrusions of the clutch base through the limiting through hole. At this time, the two arc-shaped clutch protrusions of the clutch transmission member are inserted into the transmission member position concave circle of the clutch base. One of the lifting concave positions of the clutch transmission member and the nut of the reversing screw assembled on the clutch base are in a half-set state. The two arc-shaped clutch protrusions of the clutch transmission member and the two arc-shaped clutch protrusions of the clutch base overlap respectively. The two notches formed by the head are respectively aligned with the two notches formed by the two arc-shaped clutch convex heads of the clutch base and the two latches. At the same time, the two balancing feet of the clutch transmission member are respectively matched with the two feet of the handle balance torsion spring. Moreover, the part of the reversing screw extending out of the clutch base, the handle balance convex head of the clutch base, the two torsion spring balance convex heads of the device bottom shell and the two balancing feet of the clutch transmission member are respectively located on the same side of the two feet of the handle balance torsion spring and on the same horizontal line.

[0018] The handle connecting head of the clutch base is tightly matched with the handle by screws through the handle connecting through hole of the clutch base.

[0019] Preferably, under the action of the handle balancing torsion spring, the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member are respectively aligned with the two notches formed by the two arc-shaped clutch protrusions of the clutch base and the two latches; when the push plate of the clutch motor or the push rod of the mechanical lock core moves upward, the latch push plate is driven to move upward, and then the latch push plate pushes the corresponding latch, so that one of the latches is inserted into the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member, and then inserted into the two notches formed by the two arc-shaped clutch protrusions of the clutch base. The notch realizes the axial combination of the clutch transmission member and the clutch base; when the push plate of the clutch motor or the push rod of the mechanical lock core moves downward, the latch push plate moves downward under the action of its own gravity or the pulling force of the push plate of the clutch motor, and the latch withdraws from the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member and the two notches formed by the two arc-shaped clutch protrusions of the clutch base under the action of the latch return spring, thereby realizing the axial separation of the clutch transmission member and the clutch base; the above is the process of realizing the clutch function of the clutch component.

[0020] More preferably, when the clutch transmission member and the clutch base are axially disengaged, since one of the lifting recesses of the clutch transmission member and the nut of the reversing screw assembled on the clutch base are in a half-set state, when the clutch base is driven by the handle to rotate in the handle-lifting direction, the clutch base can directly drive the clutch transmission member to make axial movement, and when the clutch base is driven by the handle to rotate in the handle-pressing direction, the clutch transmission member and the clutch base are still axially disengaged, thereby realizing the unconditional handle-lifting and locking function required by the smart door lock.

[0021] More preferably, after the reversing screw is unscrewed from the clutch base, the part of the reversing screw extending out of the clutch base and one leg of the handle balance torsion spring no longer cooperate, and the nut of the reversing screw and one of the lifting recesses of the clutch transmission component no longer cooperate. At this time, the clutch base and the handle can be rotated 180°, and the reversing threaded through hole of the clutch base also rotates accordingly, and then the reversing screw is reassembled into the reversing threaded through hole of the clutch base, and the part of the reversing screw extending out of the clutch base and the other leg of the handle balance torsion spring re-coordinate, and the screw head of the reversing screw and the other lifting recess of the clutch transmission component also re-coordinate, thereby realizing the handle reversing function.

[0022] Even more preferably, the clutch base and the handle tightly matched with the clutch base are in a horizontal state through the cooperation of the portion of the reversing screw extending out of the clutch base, the handle balancing protrusion of the clutch base and the two legs of the handle balancing torsion spring.

[0023] Furthermore, the lock core driving component comprises a group of gears with a certain speed ratio meshed with internal teeth, including a special-shaped tooth plate, a special-shaped gear, a lock core upper flange bearing and a lock core lower flange bearing;

[0024] The special-shaped tooth piece is a sheet metal part provided with a through hole for assembly, an arc-shaped through groove and an arc-shaped inner rack, and the special-shaped gear is a cylinder with a rectangular through hole inside and a 1 / 2 outer gear outside;

[0025] The cylindrical end of the special-shaped gear is sleeved with the lower flange bearing of the lock core. The cylindrical end of the special-shaped gear and the lower flange bearing of the lock core pass through the avoidance hole of the latch push plate and are embedded in the output gear assembly through hole of the bottom shell of the device. The rectangular through hole of the special-shaped gear can be equipped with the flat rod, which cooperates with the lock core on the door through the flat rod;

[0026] The assembly through hole of the special-shaped tooth plate is sleeved on the tooth plate position convex ring of the clutch transmission component. At this time, the arc-shaped through groove of the special-shaped tooth plate is sleeved on the tooth plate shift head of the clutch transmission component, the special-shaped tooth plate passes through the special-shaped gear, and the arc-shaped internal rack of the special-shaped tooth plate is meshed with the internal teeth of the external gear of the special-shaped gear; the upper flange bearing of the lock core is sleeved on the other end of the cylinder of the special-shaped gear; the upper flange bearing is sleeved on the two arc-shaped clutch protrusions of the clutch base.

[0027] Preferably, the arcuate inner rack of the special-shaped tooth plate and the outer gear of the special-shaped gear are a group of gears with a certain speed ratio in which internal teeth are meshed, so that when the handle and the clutch member have a one-way rotation angle of less than or equal to 40°, the one-way output angle of the special-shaped gear is greater than 180°, which meets the requirement that the dial head of the lock core on the door needs to be rotated at least 180° to drive the square tongue of the lock body on the door.

[0028] More preferably, the arc-shaped through groove of the special-shaped tooth plate is wider than the tooth plate shift head of the clutch transmission member, and the axial transmission of the special-shaped tooth plate by the clutch transmission member is a state-type axial transmission; that is, when the clutch transmission member rotates axially under the drive of the clutch base and the handle, if the tooth plate shift head of the clutch transmission member can act on the edge of the arc-shaped through groove of the special-shaped tooth plate, the special-shaped tooth plate will follow the same axial rotation, and the special-shaped tooth plate meshing with the inner teeth of the special-shaped tooth plate The gear also follows the axial rotation, thereby driving the flat rod and the dial head of the door lock core to rotate; on the contrary, if the tooth plate dial head of the clutch transmission member cannot act on the edge of the arc-shaped through groove of the special-shaped tooth plate, the special-shaped tooth plate will remain unchanged, and the special-shaped gear, the flat rod and the dial head of the door lock core will not rotate; this state-type axial transmission between the clutch component and the lock core driving component is consistent with the state-type extension and contraction action of the square tongue of the door lock body in actual use.

[0029] Furthermore, the oblique tongue driving member is composed of two sets of connecting rod structures and a square steel rotating head, including a first pull rod, a second pull rod, a first rotating head driving plate, a second rotating head driving plate, a first rivet, a second rivet, a square steel rotating head, a retaining ring, an upper flange bearing of the oblique tongue and a lower flange bearing of the oblique tongue, and is also equipped with a functional screw;

[0030] The square steel rotary head is a cylinder with a square through hole inside and a fan-shaped dial head outside, the cylinder of the square steel rotary head is provided with a retaining ring groove, a driving plate position step and a direction mark, and the fan-shaped dial head of the square steel rotary head is also provided with a functional threaded hole; the first rotary head driving plate is provided with an assembly through hole, a driving foot, a bending dial head and a functional recess, and a rivet circular hole is provided on the driving foot, and the driving foot is slightly bent upward; the second rotary head driving plate is provided with an assembly through hole, a driving foot, a bending dial head and a functional recess, and a rivet circular hole is provided on the driving foot; the first pull rod and the second pull rod are long sheet metal parts of the same specification, and are respectively provided with a first circular hole and a second circular hole at one end and a first through groove and a second through groove at the other end;

[0031] The first rotary head driving plate is mounted on the driving plate position step of the square steel rotary head through the assembly through hole, and the second rotary head driving plate is also mounted on the driving plate position step of the square steel rotary head through the assembly through hole. Because the driving foot of the first rotary head driving plate is slightly bent upward, the rivet circular hole of the first rotary head driving plate and the rivet circular hole of the second rotary head driving plate are at the same level, and the bending dial head of the first rotary head driving plate and the bending dial head of the second rotary head driving plate are staggered and stacked; the retaining spring is mounted on the retaining spring groove of the square steel rotary head to limit the first rotary head driving plate and the second rotary head driving plate; the first rivet passes through The first through slot of the first pull rod and the rivet circular hole of the first turn head driving plate are connected by pressure rivets, and the second rivet passes through the second through slot of the second pull rod and the rivet circular hole of the second turn head driving plate and are connected by pressure rivets, and these two connections are both movable connections; the first circular hole of the first pull rod and the second circular hole of the second pull rod are respectively mounted on the two pull rod heads of the clutch transmission member; the inclined tongue upper flange bearing is mounted on one end of the cylinder of the square steel turn head, and the inclined tongue lower flange bearing is mounted on the other end of the cylinder of the square steel turn head, and the square steel turn head and the inclined tongue lower flange bearing are mounted in the square steel turn head assembly through slot of the bottom shell of the device.

[0032] Preferably, the square steel rotating head can be adjusted up and down in the square steel rotating head assembly slot of the bottom shell of the device, that is, the hole distance between the cylinder of the square steel rotating head and the cylinder of the special-shaped gear can be adjusted;

[0033] Rotate the square steel rotating head and point the direction mark of the square steel rotating head to the handle. At this time, the fan-shaped dial head of the square steel rotating head is located in the opposite direction of the handle; when the handle is rotated upward, that is, the handle is lifted, the clutch component is driven to unconditionally lift and lock the handle, and then drive the two sets of connecting rod structures of the oblique tongue driving component, but the bent dial head of the first rotating head driving piece and the bent dial head of the second rotating head driving piece cannot be dialed to the fan-shaped dial head of the square steel rotating head, and the square steel rotating head is not linked at this time; when the handle is rotated downward, that is, the handle is pressed down, and the clutch component is in a closed state, the clutch component is driven and then the two sets of connecting rod structures of the oblique tongue driving component are driven, the bent dial head of the first rotating head driving piece or the bent dial head of the second rotating head driving piece can be dialed to the fan-shaped dial head of the square steel rotating head, and at this time the square steel rotating head follows the handle to rotate in the same direction as the axis.

[0034] More preferably, the square steel turntable is located in the square steel turntable assembly groove of the cover plate and can move up and down, the square steel turntable is adjusted to a set height position (for example, the hole distance between the cylinder of the square steel turntable and the cylinder of the special-shaped gear is 68 mm), and the square steel turntable is rotated so that the direction mark of the square steel turntable points downward. At this time, the functional recess of the first turntable driving plate, the functional recess of the second turntable driving plate and the functional threaded hole of the square steel turntable overlap and align, and the functional screw can be screwed into the functional threaded hole of the square steel turntable, and the screw head of the functional screw is located in the functional recess of the first turntable driving plate and the functional recess of the second turntable driving plate. The two groups of connecting rod structures of the oblique tongue driving component can respectively drive the functional screw through the functional recess of the first turntable driving plate and the functional recess of the second turntable driving plate, and then drive the square steel turntable to make positive and negative axial movements; the function that the lock tongue of the lock body on the door can be bidirectionally driven and retracted by the square steel is realized.

[0035] Further, the cover plate component includes a cover plate, an adjustment plate, two groups of mounting screws and a group of adjusting screws, the cover plate is provided with a clutch base assembly special-shaped through hole, an output gear assembly through hole, a square steel rotary head assembly through groove, two groups of mounting screw holes and upper and lower groups of adjusting screw holes, the adjustment plate is provided with a square steel rotary head assembly through groove and a group of adjusting screw holes, the clutch base assembly special-shaped through hole, the output gear assembly through hole, and the square steel rotary head assembly through groove of the cover plate respectively correspond to the clutch base assembly through hole, the output gear assembly through hole, and the square steel rotary head assembly through groove of the bottom shell of the device, taking the clutch base assembly special-shaped through hole of the cover plate as a reference, the square steel rotary head assembly through groove of the cover plate is located directly above the clutch base assembly special-shaped through hole of the cover plate, the output gear assembly through hole of the cover plate is located directly below the clutch base assembly special-shaped through hole of the cover plate, and the upper and lower groups of adjusting screw holes of the cover plate are respectively located on both sides of the square steel rotary head assembly through groove of the cover plate;

[0036] The middle circular notch of the clutch base assembly special-shaped through hole of the cover plate is sleeved on the two arc-shaped clutch protrusions of the clutch base and the upper flange bearing, and the long circular notches on both sides of the clutch base assembly special-shaped through hole of the cover plate can correspond to the reversing screws respectively, so as to facilitate the disassembly and assembly of the reversing screws when the handle is reversing later, the output gear assembly through hole of the cover plate is sleeved on the special-shaped gear and the upper flange bearing of the lock cylinder, and the square steel rotating head assembly through groove of the cover plate is sleeved on the square steel rotating head and the upper flange bearing of the oblique tongue, and the cover plate is fixed to the bottom shell of the device through the two groups of mounting screw holes with the two groups of mounting screws; all components of the clutch transmission device are carried and limited by the cover plate and the bottom shell of the device;

[0037] The square steel turntable assembly groove of the adjustment plate is also mounted on the square steel turntable and the upper flange bearing of the inclined tongue. The adjustment plate can be installed on the upper adjustment screw hole of the cover plate or the upper adjustment screw hole respectively using the adjustment screw through the adjustment screw hole.

[0038] The technical concept of the present invention is as follows: a clutch transmission device applied to an intelligent door lock mainly comprises a clutch component, a lock core driving component and a latch bolt driving component;

[0039] The clutch component is responsible for clutching and transferring the lock cylinder drive component and the latch bolt drive component, mainly realizing:

[0040] 1) It realizes the conditional transfer transmission required for unlocking by pressing the handle, that is, the clutch function of the clutch component, that is, in the normal state, the clutch component is axially disengaged inside and cannot transmit the linkage of pressing the handle to other components. Only after the legal identity is authenticated by electronic or mechanical means, under the action of the clutch motor or the mechanical lock core, the clutch component is axially combined inside, and then acts as a transfer transmission component to transmit the linkage of pressing the handle to other components;

[0041] 2) It realizes the unconditional transfer transmission required for lifting the handle to lock (lifting the handle to lock directly);

[0042] 3) The reversing requirement for the handle is realized;

[0043] The lock core driving component is responsible for transferring the linkage transmitted by the handle and the clutch component, and then drives the dial head of the lock core on the door and drives the square tongue of the lock body on the door through the flat rod. It is composed of a group of gear sets with a certain speed ratio of internal teeth meshing, mainly realizing:

[0044] 1) The design of the speed-changing gear set of the lock core driving member solves a contradiction: the one-way rotation angle of the handle is less than 40°, while the dial head of the lock core on the door needs to rotate at least 180° to drive the square tongue of the lock body on the door;

[0045] 2) There is a state-type axial transmission between the lock core driving member and the clutch member, which is consistent with the state-type extension and retraction action of the square tongue of the door lock body in actual use;

[0046] The oblique bolt driving component is responsible for transferring the linkage transmitted by the handle and the clutch component, and drives the oblique bolt hole of the lock body on the door through the square steel. It is mainly composed of two sets of connecting rod structures and a square steel rotating head, and mainly realizes:

[0047] 1) The oblique tongue driving member supports the square steel rotating head to be adjusted up and down within a certain range to adapt to the door lock bodies of different sizes;

[0048] 2) The oblique tongue driving component can also adjust the functions of the door lock bodies with different functions. It can only drive the one-way shaft of the square steel rotating head to rotate (meeting the requirements of ordinary lock bodies), or drive the two-way shaft of the square steel rotating head to rotate (meeting the requirements of double-fast lock bodies).

[0049] The smart door lock that uses the clutch transmission device provided by the present invention can directly reuse the original door lock body during installation, and the user experience is consistent with the existing smart door locks on the market, thereby improving the compatibility of the smart door lock and realizing "lossless" installation of the smart door lock, solving the industry pain points of poor compatibility, difficult installation, and high after-sales costs of smart locks in the existing market, and is more adaptable to the networked sales model of smart door locks.

[0050] The beneficial effects of the present invention are mainly manifested in: effectively realizing the "non-destructive" installation of smart door locks, good compatibility, low after-sales cost, and being more adaptable to networked sales models. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of a clutch transmission device used in a smart door lock.

[0052] Figure 2 It is an exploded schematic diagram of a clutch transmission device used in a smart door lock.

[0053] Figure 3 It is an exploded view of the bottom shell components.

[0054] Figure 4 It is the assembly drawing of the bottom shell component.

[0055] Figure 5 It is an exploded view of the clutch components.

[0056] Figure 6 These are the front side view and back side view of the clutch base.

[0057] Figure 7 It is a structural schematic diagram of the latch push plate.

[0058] Figure 8 It is the front side view and the back side view of the clutch transmission part.

[0059] Fig. 9 It is the assembly drawing of the clutch components.

[0060] Fig.10 It is an exploded view of the lock cylinder drive component.

[0061] Fig.11 It is a structural schematic diagram of a special-shaped tooth piece.

[0062] Fig.12 It is a structural schematic diagram of special-shaped gears.

[0063] Fig.13 It is an assembly drawing of the lock cylinder drive component.

[0064] Fig.14 It is an exploded view of the latch bolt drive components.

[0065] Fig.15 These are the front and back views of the square rod head turner.

[0066] Fig.16 It is a schematic diagram of the structure of the first rotor driving plate.

[0067] Fig.17 It is a schematic diagram of the structure of the second rotor driving plate.

[0068] Fig.18 It is a structural diagram of the pull rod.

[0069] Fig.19 It is an assembly drawing of the latch drive component.

[0070] Fig. 20 This is the assembly drawing of the functional screws.

[0071] Fig.21 It is an exploded view of the cover components.

[0072] Fig. 22 It is the assembly drawing of the cover component. DETAILED DESCRIPTION

[0073] The present invention will be further described below in conjunction with the accompanying drawings.

[0074] Reference Figure 1 to Figure 22 A clutch transmission device used in smart door locks. The clutch transmission device 1 cooperates with a handle 2, a clutch motor 3 or a mechanical lock core 4 respectively, and drives a lock core 5 on the door through a flat rod 7 and drives a lock body 6 on the door through a square steel 8. The clutch transmission device 1 is the core clutch and drive system of the smart door lock.

[0075] The clutch transmission device includes a bottom shell component a, a cover component b, a clutch component c, a lock core drive component d and an oblique tongue drive component e. The bottom shell component a and the cover component b are the bearings of the clutch transmission device 1. The clutch component c, the lock core drive component d and the oblique tongue drive component e are respectively assembled on the bottom shell component a and are limited and fixed by the cover component b. The clutch component c is a transmission transfer component responsible for clutching. The clutch component c is directly connected to the handle 2 and cooperates with the lock core drive component d and the oblique tongue drive component e respectively, and is responsible for the clutch action and transfer transmission between the handle 2 and the lock core drive component d and the oblique tongue drive component e. The clutch component c realizes the clutch action through the clutch motor 3 or the mechanical lock core 4. At the same time, the clutch component c is for the handle 2 The mechanical linkage required for the lift-and-close lock is unconditionally supported; the lock core driving component d is used to be responsible for driving the component of the door lock core 5 through the flat rod 7, and cooperates with the clutch component c. The lock core driving component d is composed of a group of gears with internal teeth meshing, and the rotation of the handle 2 transferred from the clutch component c is transmitted to the door lock core 5 through the flat rod 7 at a certain proportion of speed change, so that the dial head of the door lock core 5 rotates and drives the extension and retraction of the square tongue of the door lock body 6; the oblique tongue driving component e is responsible for driving the component of the oblique tongue of the door lock body 6 through the square steel 8, and cooperates with the clutch component c. The oblique tongue driving component e is composed of two groups of connecting rod structures and a square steel rotating head, and the rotation of the handle 2 transferred from the clutch component c is transmitted to the oblique tongue of the door lock body 6 through the square steel 8.

[0076] The oblique tongue driving component e of this embodiment supports the square steel rotating head to be adjusted up and down within a certain range to adapt to the door lock bodies 6 of different specifications. The oblique tongue driving component e can also perform functional adjustments corresponding to the door lock bodies 6 with different functions. It can only drive the square steel rotating head to rotate in one direction, or it can drive the square steel rotating head to rotate in two directions.

[0077] Reference Figure 3 and Figure 4The bottom shell component a includes a device bottom shell a1 and a handle balance torsion spring a2. The device bottom shell a1 is provided with a clutch base assembly through hole a1-1, an output gear assembly through hole a1-2, a square steel rotary head assembly through groove a1-3, a torsion spring limiting convex ring a1-4, two torsion spring balance convex heads a1-5, a handle limiting convex block a1-6 and a latch push plate assembly groove a1-7. With the clutch base assembly through hole a1-1 as a reference, the square steel rotary head assembly through groove a1-3 is located directly above the clutch base assembly through hole a1-1. The output The gear assembly through hole a1-2 is located directly below the clutch base assembly through hole a1-1, the torsion spring limiting convex ring a1-4 is an inner extension convex ring of the clutch base assembly through hole a1-1, the two torsion spring balancing convex heads a1-5 are respectively located on the left and right sides of the clutch base assembly through hole a1-1, the handle limiting convex block a1-6 is located between the clutch base assembly through hole a1-1 and the output gear assembly through hole a1-2, and the latch push plate assembly groove a1-7 is located on both sides of the output gear assembly through hole a1-2;

[0078] The handle balance torsion spring a2 is sleeved on the torsion spring limiting convex ring a1-4, and the two legs of the handle balance torsion spring a2 are respectively hung on the two torsion spring balance convex heads a1-5 of the device bottom shell a1.

[0079] Reference Figures 5 to 9 The clutch component c includes a clutch base c1, a clutch transmission member c2, two latch pins c4, two groups of latch pin reset springs c5, two latch pin cover plates c6 and a latch pin push plate c7. The clutch base c1 is the main attached part of the other parts of the clutch component c. The two latch pins c4, the two groups of latch pin reset springs c5 and the two latch pin cover plates c6 are assembled on the clutch base c1 to form two groups of vertically symmetrical resettable latch pin structures, and cooperate with the clutch transmission member c2 to form two groups of vertically symmetrical resettable latch pin clutch structures. The latch pin push plate c7 is assembled on the latch pin push plate assembly groove a1-7 of the device bottom shell a1. The latch pin push plate c7 is an intermediate transmission part that enables the clutch motor 3 or the mechanical lock core 4 to act on the latch pin c4.

[0080] The clutch component c also includes a reversing screw c3, a lower bearing c8 and an upper flange bearing c9. The front surface of the clutch base c1 is provided with two latch grooves c1-1, two latch cover plate grooves c1-2, two groups of latch cover plate screw holes c1-3, a transmission member position concave ring c1-4, two arc-shaped clutch protrusions c1-5 and a reversing threaded through hole c1-6. The bottom surface of the clutch base c1 is provided with a handle connecting head c1-7, a handle connecting through hole c1-8 and a handle balancing protrusion c1-9; the latch The pin push plate c7 is a special-shaped sheet metal part, with an arc-shaped edge c7-1 on the top, travel limit concave edges c7-2 on the left and right sides, a motor connection hook c7-3 on the bottom, and a avoidance hole c7-4 in the middle; the clutch transmission part c2 is provided with a gear position convex ring c2-1, a gear shift head c2-2, two pull rod heads c2-3 and two arc-shaped lifting concave positions c2-4 on the front, a limit through hole c2-5 in the middle, and two balance feet c2-6 and two arc-shaped clutch convex heads c2-7 on the back;

[0081] The two latches c4 are two cross-shaped iron sheets, and the two arms of the latches c4 have a limiting function. At the same time, the two arms of the latches c4 cooperate with a group of latch reset springs c5 to play a resetting role. The two latches c4 and the two groups of latch reset springs c5 are respectively embedded in the two latch grooves c1-1 of the clutch base c1, and the two latch cover plates c6 are respectively assembled in the two latch cover plate grooves c1-2 of the clutch base c1 and fixed with screws, which play a limiting role for the latches c4 and the latch reset springs c5. The reversing screw c3 is assembled in the reversing threaded through hole c1-6 of the clutch base c1, and the reversing screw c3 is relatively long. The part of the reversing screw c3 extending out of the clutch base c1 and the handle balance protrusion c1-9 of the clutch base c1 are symmetrical in position. The clutch base c1 The handle connecting head c1-7 is assembled with the lower bearing c8, and the inner ring of the handle connecting head c1-7 and the lower bearing c8 are tightly matched; the handle connecting head c1-7 of the clutch base c1 is inserted into the clutch base assembly through hole a1-1 of the device bottom shell a1, and the outer ring of the lower bearing c8 is tightly matched with the clutch base assembly through hole a1-1 of the device bottom shell a1. At this time, the part of the reversing screw c3 extending out of the clutch base c1 and the handle balancing convex head c1-9 of the clutch base c1 are respectively matched with the two legs of the handle balancing torsion spring a2. At the same time, the part of the reversing screw c3 extending out of the clutch base c1, the handle balancing convex head c1-9 of the clutch base c1 and the two torsion spring balancing convex heads a1-5 of the device bottom shell a1 are respectively located on the same side of the two legs of the handle balancing torsion spring a2 and on the same horizontal line;

[0082] The latch push plate c7 is assembled on the latch push plate assembly groove a1-7 of the device bottom shell a1, and is limited by four screws installed on the device bottom shell a1 with nuts. The four screws are in the stroke limit concave edge c7-2 of the latch push plate c7, so that the latch push plate c7 can only move up and down within the stroke. The position of the latch push plate c7 relative to the device bottom shell a1 is consistent with the position of the latch c4 relative to the device bottom shell a1. The arc edge c7-1 of the latch push plate c7 is opposite to the latch c4. The motor connecting hook c7-3 of the latch push plate c7 is hung with the push plate of the clutch motor 3, and the latch push plate c7 is also matched with the mechanical lock core 4.

[0083] The clutch transmission member c2 is sleeved on the two arc-shaped clutch protrusions c1-5 of the clutch base c1 through the limiting through hole c2-5. At this time, the two arc-shaped clutch protrusions c2-7 of the clutch transmission member c2 are inserted into the transmission member position concave circle c1-4 of the clutch base c1. One of the lifting concave positions c2-4 of the clutch transmission member c2 and the nut of the reversing screw c3 assembled on the clutch base c1 are in a half-set state. The two arc-shaped clutch protrusions c2-7 of the clutch transmission member c2 and the two arc-shaped clutch protrusions c1-5 of the clutch base c1 overlap respectively. The two notches formed by the engaging protrusion c2-7 are respectively aligned with the two notches formed by the two arc-shaped engaging protrusions c1-5 of the clutch base c1 and the two latches c4. At the same time, the two balancing feet c2-6 of the clutch transmission member c2 are respectively matched with the two feet of the handle balancing torsion spring a2. Moreover, the part of the reversing screw c3 extending out of the clutch base c1, the handle balancing protrusion c1-9 of the clutch base c1, the two torsion spring balancing protrusions a1-5 of the device bottom shell a1 and the two balancing feet c2-6 of the clutch transmission member c2 are respectively located on the same side of the two feet of the handle balancing torsion spring a2 and on the same horizontal line.

[0084] The handle connecting head c1-7 of the clutch base c1 is tightly fitted with the handle 2 through the handle connecting through hole c1-8 of the clutch base c1 by means of screws;

[0085] In summary, a clutch component c is formed.

[0086] Under the action of the handle balancing torsion spring a2, the two notches formed by the two arc-shaped clutch protrusions c2-7 of the clutch transmission member c2 are respectively aligned with the two notches formed by the two arc-shaped clutch protrusions c1-5 of the clutch base c1 and the two latch pins c4; when the push plate of the clutch motor 3 or the push rod of the mechanical lock core 4 moves upward, the latch pin push plate c7 is driven to move upward, and then the latch pin push plate c7 pushes the corresponding latch pin c4, so that one of the latch pins c4 is inserted into the two notches formed by the two arc-shaped clutch protrusions c2-7 of the clutch transmission member c2, and then inserted into the notches formed by the two arc-shaped clutch protrusions c1-5 of the clutch base c1. Two notches realize the axial combination of the clutch transmission member c2 and the clutch base c1; when the push plate of the clutch motor 3 or the push rod of the mechanical lock core 4 moves downward, the latch push plate c7 moves downward under its own gravity or the pulling force of the push plate of the clutch motor 3, and the latch c4 withdraws from the two notches formed by the two arc-shaped clutch protrusions c2-7 of the clutch transmission member c2 and the two notches formed by the two arc-shaped clutch protrusions c1-5 of the clutch base c1 under the action of the latch return spring c5, realizing the axial separation of the clutch transmission member c2 and the clutch base c1; the above is the process of realizing the clutch function of the clutch component c;

[0087] When the clutch transmission member c2 and the clutch base c1 are axially disengaged, since one of the lifting recessed positions c2-4 of the clutch transmission member c2 and the nut of the reversing screw c3 assembled on the clutch base c1 are in a half-set state, when the clutch base c1 is driven by the handle 2 to rotate in the lifting direction of the handle 2, the clutch base c1 can directly drive the clutch transmission member c2 to make axial movement, and when the clutch base c1 is driven by the handle 2 to rotate in the pressing direction of the handle 2, the clutch transmission member c2 and the clutch base c1 are still axially disengaged, which realizes the unconditional handle lifting and locking function required by the smart door lock;

[0088] After the reversing screw c3 is unscrewed from the clutch base c1, the part of the reversing screw c3 extending out of the clutch base c1 and one leg of the handle balance torsion spring a2 no longer cooperate, and the nut of the reversing screw c3 and one of the lifting recesses c2-4 of the clutch transmission member c2 no longer cooperate. At this time, the clutch base c1 and the handle 2 can rotate 180°, and the reversing threaded through hole c1-6 of the clutch base c1 also rotates accordingly, and then the reversing screw c3 is reassembled into the reversing threaded through hole c1-6 of the clutch base c1, and the part of the reversing screw c3 extending out of the clutch base c1 and the other leg of the handle balance torsion spring a2 re-coordinate, and the screw head of the reversing screw c3 and the other lifting recess c2-4 of the clutch transmission member c2 also re-coordinate, thereby realizing the handle reversing function;

[0089] Through the cooperation of the part of the reversing screw c3 extending out of the clutch base c1, the handle balancing protrusion c1-9 of the clutch base c1 and the two legs of the handle balancing torsion spring a2, the clutch base c1 and the handle 2 tightly matched with the clutch base c1 are in a horizontal state, which meets the customary requirements for the horizontality of smart door lock handles.

[0090] Reference Figure 10 to Figure 13 The lock core driving component d comprises a group of gears with a certain speed ratio meshed with internal teeth, including a special-shaped tooth plate d1, a special-shaped gear d2, a lock core upper flange bearing d3 and a lock core lower flange bearing d4;

[0091] The special-shaped tooth piece d1 is a sheet metal part with an assembly through hole d1-1, an arc-shaped through groove d1-2 and a 1 / 6 arc-shaped internal rack d1-3, and the special-shaped gear d2 is a cylinder with a rectangular through hole d2-1 inside and a 1 / 2 external gear d2-2 outside;

[0092] The cylindrical end of the special-shaped gear d2 is sleeved with the lower flange bearing d4 of the lock core. The cylindrical end of the special-shaped gear d2 and the lower flange bearing d4 of the lock core pass through the avoidance hole c7-4 of the latch push plate c7 and are embedded in the output gear assembly through hole a1-2 of the bottom shell a1 of the device. The rectangular through hole d2-1 of the special-shaped gear d2 can be equipped with the flat rod 7, and cooperate with the lock core 5 on the door through the flat rod 7.

[0093] The assembly through hole d1-1 of the special-shaped tooth piece d1 is mounted on the tooth piece position convex ring c2-1 of the clutch transmission member c2. At this time, the arc-shaped through groove d1-2 of the special-shaped tooth piece d1 is mounted on the tooth piece shift head c2-2 of the clutch transmission member c2. The special-shaped tooth piece d1 passes through the special-shaped gear d2, and the arc-shaped inner rack d1-3 of the special-shaped tooth piece d1 is meshed with the inner teeth of the outer gear d2-2 of the special-shaped gear d2; the flange bearing d3 on the lock core is mounted on the other end of the cylinder of the special-shaped gear d2; the upper flange bearing c9 of the clutch member is mounted on the two arc-shaped clutch protrusions c1-5 of the clutch base c1, and has two functions: 1. Optimizing the axial rotation of the clutch base c1, 2. Limiting the special-shaped tooth piece d1 and the clutch transmission member c2;

[0094] In summary, a lock core driving component d is constructed.

[0095] The arcuate inner rack d1-3 of the special-shaped tooth plate d1 and the outer gear d2-2 of the special-shaped gear d2 form a set of gears with a certain speed ratio in which internal teeth are meshed, so that when the handle 2 and the clutch member c have a one-way rotation angle less than or equal to 40°, the one-way output angle of the special-shaped gear d2 is greater than 180°, which meets the requirement that the dial head of the door lock core 5 needs to be rotated at least 180° to drive the square tongue of the door lock body 6.

[0096] Since the arc-shaped through groove d1-2 of the special-shaped tooth piece d1 is wider than the tooth piece shift head c2-2 of the clutch transmission member c2, the axial transmission of the special-shaped tooth piece d1 by the clutch transmission member c2 is a state-type axial transmission; that is, when the clutch transmission member c2 is driven by the clutch base c1 and the handle 2 to perform axial rotation, if the tooth piece shift head c2-2 of the clutch transmission member c2 can act on the edge of the arc-shaped through groove d1-2 of the special-shaped tooth piece d1, the special-shaped tooth piece d1 will perform the same axial rotation and mesh with the internal teeth of the special-shaped tooth piece d1. The special-shaped gear d2 also follows the axial rotation, thereby driving the flat rod 7 and the dial head of the door lock core 5 to rotate; conversely, if the tooth plate dial head c2-2 of the clutch transmission member c2 cannot act on the edge of the arc-shaped through groove d1-2 of the special-shaped tooth plate d1, the special-shaped tooth plate d1 remains unchanged, and the special-shaped gear d2, the flat rod 7 and the dial head of the door lock core 5 do not rotate; this state-type axial transmission between the clutch component c and the lock core driving component d conforms to the state-type extension and contraction action of the square tongue of the door lock body 6 in actual use.

[0097] Reference Fig.14The oblique tongue driving component e is composed of two sets of connecting rod structures and a square steel swivel, including two tie rods (a first tie rod e4 and a second tie rod e5), two swivel driving plates (a first swivel driving plate e2 and a second swivel driving plate e3), two rivets (a first rivet e6 and a second rivet e7), a square steel swivel e1, a retaining ring e8, an oblique tongue upper flange bearing e9 and an oblique tongue lower flange bearing e10, and is also equipped with a functional screw e11;

[0098] Reference Figure 15 to Figure 18 The square steel rotating head e1 is a cylinder with a square through hole e1-1 inside and a fan-shaped dial head e1-2 outside. The cylinder of the square steel rotating head e1 is provided with a retaining spring groove e1-3, a driving plate position step e1-4 and a direction mark e1-6. The fan-shaped dial head of the square steel rotating head e1 is also provided with a functional threaded hole e1-5; the first rotating head driving plate e2 is provided with an assembly through hole e2-1, a driving foot e2-2, a bent dial head e2-4 and a functional notch e2-5, and the driving foot e2-2 is provided with a rivet The driving foot e2-2 is slightly bent upward; the second rotary head driving plate e3 is provided with an assembly through hole e3-1, a driving foot e3-2, a bent dial head e3-4 and a functional notch e3-5, and the driving foot e3-2 is provided with a rivet round hole e3-3; the first pull rod e4 and the second pull rod e5 are long sheet metal parts of the same specification, and are respectively provided with a first round hole e4-1 and a second round hole e5-1 at one end, and a first through groove e4-2 and a second through groove e5-2 at the other end;

[0099] Reference Fig.19, the first rotary head driving piece e2 is mounted on the driving piece position step e1-4 of the square steel rotary head e1 through the assembly through hole e2-1, and the second rotary head driving piece e3 is also mounted on the driving piece position step e1-4 of the square steel rotary head e1 through the assembly through hole e3-1. Because the driving foot e2-2 of the first rotary head driving piece e2 is slightly bent upward, the rivet round hole e2-3 of the first rotary head driving piece e2 and the rivet round hole e3-3 of the second rotary head driving piece e3 are at the same level, and the bent dial head e2-4 of the first rotary head driving piece e2 and the bent dial head e3-4 of the second rotary head driving piece e3 are staggered and stacked; the retaining spring e8 is clamped on the retaining spring groove e1-3 of the square steel rotary head e1 to limit the first rotary head driving piece e2 and the second rotary head driving piece e3; the first rivet e6 The first through slot e4-2 of the first pull rod e4 and the rivet circular hole e2-3 of the first rotary head driving plate e2 are passed through and riveted to each other, and the second rivet e7 is passed through the second through slot e5-2 of the second pull rod e5 and the rivet circular hole e3-3 of the second rotary head driving plate e3 and riveted to each other, and both connections are movable connections; the first circular hole e4-1 of the first pull rod e4 and the second circular hole e5-1 of the second pull rod e5 are respectively mounted on the two pull rod heads c2-3 of the clutch transmission member c2; the inclined tongue upper flange bearing e9 is mounted on one end of the cylinder of the square steel rotary head e1, and the inclined tongue lower flange bearing e10 is mounted on the other end of the cylinder of the square steel rotary head e1, and the square steel rotary head e1 and the inclined tongue lower flange bearing e10 are mounted in the square steel rotary head assembly through slot a1-3 of the device bottom shell a1;

[0100] In summary, a latch tongue driving component e is constructed.

[0101] Because the through grooves e4-2 and e5-2 of the two pull rods e4 and e5, and because the oblique tongue driving member e is a two-group independent connecting rod structure, the square steel rotating head e1 can be adjusted up and down in the square steel rotating head assembly through groove a1-3 of the device bottom shell a1, that is, the hole distance between the cylinder of the square steel rotating head e1 and the cylinder of the special-shaped gear d2 can be adjusted, and this function achieves the purpose of adapting to the door lock body 6 of different specifications;

[0102] Rotate the square steel rotating head e1, and point the direction mark e1-6 of the square steel rotating head e1 to the handle 2. At this time, the fan-shaped dial head e1-2 of the square steel rotating head e1 is located in the opposite direction of the handle 2; when the handle 2 is rotated upward (the handle is lifted), it drives the clutch component c (unconditional handle lifting and locking), and then drives the two groups of connecting rod structures of the oblique tongue driving component e, but the bent dial head e2-4 of the first rotating head driving piece e2 and the bent dial head e3-4 of the second rotating head driving piece e3 cannot be dialed to the fan-shaped dial head e1-2 of the square steel rotating head e1. At this time, the square steel rotating head e1 No linkage; when the handle 2 is rotated downward (the handle is pressed down), it drives the clutch component c (the clutch component c is in a closed state through the clutch motor 3 or the mechanical lock core 4), and then drives the two sets of connecting rod structures of the oblique tongue driving component e, the bent dial head e2-4 of the first rotating head driving piece e2 or the bent dial head e3-4 of the second rotating head driving piece e3 can be dialed to the fan-shaped dial head e1-2 of the square steel rotating head e1, and at this time the square steel rotating head follows the handle 2 to rotate in the same direction of the axis; this function meets the requirement that the oblique tongue of the lock body 6 (ordinary lock body) on the door can only be retracted in one direction by the square steel 8.

[0103] Reference Fig. 20 , the square steel turntable e1 is located in the square steel turntable assembly groove b1-3 of the cover plate b1 and can move up and down, adjust the square steel turntable to a set height position (for example, the hole distance between the cylinder of the square steel turntable e1 and the cylinder of the special-shaped gear d2 is 68mm), and rotate the square steel turntable e1 so that the direction mark e1-6 of the square steel turntable e1 points downward, at this time, the functional recess e2-5 of the first turntable drive sheet e2, the functional recess e3-5 of the second turntable drive sheet e3 and the functional threaded hole e1-5 of the square steel turntable e1 are overlapped and aligned, and the functional screw e11 can be screwed into the square The functional threaded hole e1-5 of the steel rotary head e1, and the screw head of the functional screw e11 is located in the functional recess e2-5 of the first rotary head driving plate e2 and the functional recess e3-5 of the second rotary head driving plate e3. The two sets of connecting rod structures of the oblique tongue driving component e can respectively drive the functional screw e11 through the functional recess e2-5 of the first rotary head driving plate e2 and the functional recess e3-5 of the second rotary head driving plate e3, and then drive the square steel rotary head e1 to perform forward and reverse axial movement; this function meets the requirement that the lock tongue of the lock body 6 (double quick lock body) on the door can be bidirectionally driven and retracted by the square steel 8.

[0104] Reference Fig.21, the cover plate component b includes a cover plate b1, an adjustment plate b2, two groups of mounting screws b3 and a group of adjusting screws b4, the cover plate b1 is provided with a clutch base assembly special-shaped through hole b1-1, an output gear assembly through hole b1-2, a square steel swivel assembly through groove b1-3, two groups of mounting screw holes b1-4 and upper and lower groups of adjusting screw holes b1-5 and b1-6, the adjustment plate b2 is provided with a square steel swivel assembly through groove b2-1 and a group of adjusting screw holes b2-2, with the clutch base assembly special-shaped through hole b1-1 as a reference, the square steel swivel assembly through groove b1-3 is located directly above the clutch base assembly special-shaped through hole b1-1, the output gear assembly through hole b1-2 is located directly below the clutch base assembly special-shaped through hole b1-1, and the upper and lower groups of adjusting screw holes b1-5 and b1-6 are respectively located on both sides of the square steel swivel assembly through groove b1-3;

[0105] Reference Fig. 22 The middle circular notch of the clutch base assembly special-shaped through hole b1-1 of the cover plate b1 is sleeved on the two arc-shaped clutch protrusions c1-5 of the clutch base c1 and the upper flange bearing c9 of the clutch component. The long circular notches on both sides of the clutch base assembly special-shaped through hole b1-1 of the cover plate b1 can correspond to the reversing screw c3 respectively, so as to facilitate the disassembly and assembly of the reversing screw c3 when the handle 2 is reversing in the later stage. The output gear assembly through hole b1-2 of the cover plate b1 is sleeved on the special-shaped gear d2 and the upper flange bearing d3 of the lock core. The square steel rotating head assembly groove b1-3 of the cover plate b1 is sleeved on the square steel rotating head e1 and the upper flange bearing e9 of the oblique tongue. The cover plate b1 is fixed to the bottom shell a1 of the device through the two groups of mounting screw holes b1-4 with the two groups of mounting screws b3; all components of the clutch transmission device 1 are carried and limited by the cover plate b1 and the bottom shell a1 of the device;

[0106] The square steel rotary head assembly slot b2-1 of the adjustment plate b2 is also mounted on the square steel rotary head e1 and the upper flange bearing e9 of the inclined tongue. The adjustment plate b2 can be respectively mounted on the upper adjustment screw hole b1-5 or the upper adjustment screw hole b1-6 of the cover plate b1 through the adjustment screw hole b2-2 using the adjustment screw b4;

[0107] The function of the adjustment plate b2 is: first, to ensure that the square steel rotating head e1 is limited to a smaller free adjustment range, and at the same time, the square steel rotating head e1 can be moved to another adjustment range through the adjustment screw b4; this not only ensures the adjustment needs in actual use (the actual specification requirements of the lock body 6 on the door), but also ensures the safety and stability in actual use.

[0108] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept and are for illustrative purposes only. The protection scope of the present invention should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be thought of by ordinary technicians in this field based on the inventive concept.

Claims

1. A clutch transmission device applied to an intelligent door lock, the clutch transmission device cooperates with a handle, a clutch motor or a mechanical lock core respectively, and drives the lock core on the door through a flat rod and drives the lock body on the door through a square steel, characterized in that: The clutch transmission device comprises a bottom shell component, a cover plate component, a clutch component, a lock core driving component and a latch bolt driving component, wherein the clutch component, the lock core driving component and the latch bolt driving component are respectively assembled on the bottom shell component and fixed by the cover plate component; The clutch component is used as a transmission transfer component for clutching. The clutch component is directly connected to the handle and cooperates with the lock core driving component and the oblique tongue driving component respectively, and is responsible for the clutch action and transfer transmission between the handle and the lock core driving component and the oblique tongue driving component. The clutch component realizes the clutch action through the clutch motor or the mechanical lock core. At the same time, the clutch component unconditionally supports the mechanical linkage required for the handle to lift and close the lock. The lock core driving member is composed of a group of gears meshing with internal teeth, and the rotation of the handle transferred from the clutch member is transmitted to the door lock core through the flat rod at a certain ratio of speed change, so that the dial head of the door lock core rotates and drives the extension and retraction of the square tongue of the door lock body; The oblique bolt driving component is composed of two groups of connecting rod structures and a square steel rotating head, and the rotation of the handle turned from the clutch component is transmitted to the oblique bolt of the lock body on the door through the square steel.

2. A clutch transmission device for a smart door lock as claimed in claim 1, characterized in that: The bottom shell component includes a device bottom shell and a handle balance torsion spring. The device bottom shell is provided with a clutch base assembly through hole, an output gear assembly through hole, a square steel rotating head assembly through groove, a torsion spring limiting convex ring, two torsion spring balance convex heads, a handle limiting convex block and a latch push plate assembly groove. The clutch base assembly through hole serves as the limiting hole of the clutch component, the output gear assembly through hole serves as the limiting hole of the lock core driving component, the square steel rotating head assembly through groove serves as the limiting groove of the oblique tongue driving component, and the clutch base assembly through hole serves as the limiting hole of the clutch component. For reference, the square steel rotary head assembly groove is located directly above the clutch base assembly through hole, the output gear assembly through hole is located directly below the clutch base assembly through hole, the torsion spring limiting convex ring is an inner extension convex ring of the clutch base assembly through hole, the two torsion spring balancing convex heads are respectively located on the left and right sides of the clutch base assembly through hole, the handle limiting convex block is located between the clutch base assembly through hole and the output gear assembly through hole, and the latch push plate assembly groove is located on both sides of the output gear assembly through hole; The handle balance torsion spring is sleeved on the torsion spring limiting convex ring, and two legs of the handle balance torsion spring are respectively hung on the two torsion spring balance convex heads of the device bottom shell.

3. A clutch transmission device for a smart door lock as claimed in claim 1 or 2, characterized in that: The clutch component includes a clutch base, a clutch transmission component, two latches, two groups of latch reset springs, two latch cover plates and a latch push plate. The clutch base is the main attached part of the other parts of the clutch component. The two latches, the two groups of latch reset springs and the two latch cover plates are assembled on the clutch base to form two groups of vertically symmetrical resettable latch structures, and cooperate with the clutch transmission component to form a vertically symmetrical resettable latch clutch structure. The latch push plate is assembled on the latch push plate assembly groove of the bottom shell of the device. The latch push plate is an intermediate transmission part that enables the clutch motor or the mechanical lock core to act on the latch.

4. A clutch transmission device for a smart door lock as claimed in claim 3, characterized in that: The clutch component also includes a reversing screw and a lower bearing, the front side of the clutch base is provided with two latch slots, two latch cover plate slots, two groups of latch cover plate screw holes, a transmission member position concave ring, two arc-shaped clutch convex heads and a reversing threaded through hole, the bottom surface of the clutch base is provided with a handle connecting head, a handle connecting through hole and a handle balancing convex head; the latch push plate is a special-shaped sheet metal part, the upper side is provided with an arc edge, the left and right sides are respectively provided with travel limit concave edges, the lower side is provided with a motor connecting hook, and the middle is provided with a avoidance hole; the front side of the clutch transmission member is provided with a gear position convex ring, a gear shifting head, two pull rod heads and two arc-shaped lifting concave positions, a limit through hole is provided in the middle, and the reverse side is provided with two balancing feet and two arc-shaped clutch convex heads; The two latches are two cross-shaped iron sheets, and the two arms of the latch have a limiting function. At the same time, the two arms of the latch cooperate with a group of latch reset springs to play a resetting role. The two latches and the two groups of latch reset springs are respectively embedded in the two latch grooves of the clutch base, and the two latch cover plates are respectively assembled in the two latch cover plate grooves of the clutch base and fixed with screws, which play a limiting role for the latch and the latch reset spring. The reversing screw is assembled in the reversing threaded through hole of the clutch base, and the reversing screw is relatively long. The part of the reversing screw extending out of the clutch base and the handle balance convex head of the clutch base are symmetrically positioned. The handle connecting head of the base is assembled with the lower bearing, and the handle connecting head and the inner ring of the lower bearing are tightly matched; the handle connecting head of the clutch base is inserted into the clutch base assembly through hole of the device bottom shell, and the outer ring of the lower bearing and the clutch base assembly through hole of the device bottom shell are tightly matched. At this time, the part of the reversing screw extending out of the clutch base and the handle balancing convex head of the clutch base are respectively matched with the two legs of the handle balancing torsion spring. At the same time, the part of the reversing screw extending out of the clutch base, the handle balancing convex head of the clutch base and the two torsion spring balancing convex heads of the device bottom shell are respectively located on the same side of the two legs of the handle balancing torsion spring and on the same horizontal line; The latch push plate is assembled on the latch push plate assembly groove of the device bottom shell, and is limited by four screws installed on the device bottom shell with nuts. The four screws are in the travel limit concave edge of the latch push plate, so that the latch push plate can only move up and down within the travel. The position of the latch push plate relative to the device bottom shell is consistent with the position of the latch relative to the device bottom shell. The arc edge of the latch push plate is directly opposite to the latch. The motor connecting hook of the latch push plate is hung with the push plate of the clutch motor, and the latch push plate is also matched with the mechanical lock core. The clutch transmission member is sleeved on the two arc-shaped clutch protrusions of the clutch base through the limiting through hole. At this time, the two arc-shaped clutch protrusions of the clutch transmission member are inserted into the transmission member position concave circle of the clutch base. One of the lifting concave positions of the clutch transmission member and the nut of the reversing screw assembled on the clutch base are in a half-set state. The two arc-shaped clutch protrusions of the clutch transmission member and the two arc-shaped clutch protrusions of the clutch base overlap respectively. The two notches formed by the head are respectively aligned with the two notches formed by the two arc-shaped clutch convex heads of the clutch base and the two latches. At the same time, the two balancing feet of the clutch transmission member are respectively matched with the two feet of the handle balance torsion spring. Moreover, the part of the reversing screw extending out of the clutch base, the handle balance convex head of the clutch base, the two torsion spring balance convex heads of the device bottom shell and the two balancing feet of the clutch transmission member are respectively located on the same side of the two feet of the handle balance torsion spring and on the same horizontal line. The handle connecting head of the clutch base is tightly matched with the handle by screws through the handle connecting through hole of the clutch base.

5. A clutch transmission device for a smart door lock as claimed in claim 4, characterized in that: Under the action of the handle balancing torsion spring, the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member are respectively aligned with the two notches formed by the two arc-shaped clutch protrusions of the clutch base and the two latches; when the push plate of the clutch motor or the push rod of the mechanical lock core moves upward, the latch push plate is driven to move upward, and then the latch push plate pushes the corresponding latch, so that one of the latches is inserted into the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member, and then inserted into the two notches formed by the two arc-shaped clutch protrusions of the clutch base. , realizing the axial combination of the clutch transmission member and the clutch base; when the push plate of the clutch motor or the push rod of the mechanical lock core moves downward, the latch push plate moves downward under its own gravity or the pulling force of the push plate of the clutch motor, and the latch withdraws from the two notches formed by the two arc-shaped clutch protrusions of the clutch transmission member and the two notches formed by the two arc-shaped clutch protrusions of the clutch base under the action of the latch return spring, realizing the axial separation of the clutch transmission member and the clutch base; the above is the process of realizing the clutch function of the clutch component.

6. A clutch transmission device for a smart door lock as claimed in claim 4, characterized in that: When the clutch transmission member and the clutch base are axially disengaged, since one of the lifting recesses of the clutch transmission member and the nut of the reversing screw assembled on the clutch base are in a half-set state, when the clutch base is driven by the handle to rotate in the handle lifting direction, the clutch base can directly drive the clutch transmission member to make axial movement, and when the clutch base is driven by the handle to rotate in the handle pressing direction, the clutch transmission member and the clutch base are still axially disengaged, thereby realizing the unconditional handle lifting and locking function required by the smart door lock.

7. A clutch transmission device for a smart door lock as claimed in claim 4, characterized in that: After the reversing screw is unscrewed from the clutch base, the part of the reversing screw extending out of the clutch base and one leg of the handle balance torsion spring no longer cooperate, and the nut of the reversing screw and one of the lifting recesses of the clutch transmission component no longer cooperate. At this time, the clutch base and the handle can be rotated 180°, and the reversing threaded through hole of the clutch base also rotates accordingly. Then the reversing screw is reassembled into the reversing threaded through hole of the clutch base, and the part of the reversing screw extending out of the clutch base and the other leg of the handle balance torsion spring re-coordinate, and the screw head of the reversing screw and the other lifting recess of the clutch transmission component also re-coordinate, thereby realizing the handle reversing function.

8. A clutch transmission device for a smart door lock as claimed in claim 4, characterized in that: Through the cooperation of the part of the reversing screw extending out of the clutch base, the handle balance protrusion of the clutch base and the two legs of the handle balance torsion spring, the clutch base and the handle tightly matched with the clutch base are in a horizontal state.

9. A clutch transmission device for a smart door lock as claimed in claim 4, characterized in that: The lock core driving component comprises a group of gears with a certain speed ratio meshed with internal teeth, including a special-shaped tooth plate, a special-shaped gear, a lock core upper flange bearing and a lock core lower flange bearing; The special-shaped tooth piece is a sheet metal part provided with a through hole for assembly, an arc-shaped through groove and an arc-shaped inner rack, and the special-shaped gear is a cylinder with a rectangular through hole inside and a 1 / 2 outer gear outside; The cylindrical end of the special-shaped gear is sleeved with the lower flange bearing of the lock core. The cylindrical end of the special-shaped gear and the lower flange bearing of the lock core pass through the avoidance hole of the latch push plate and are embedded in the output gear assembly through hole of the bottom shell of the device. The rectangular through hole of the special-shaped gear can be equipped with the flat rod, which cooperates with the lock core on the door through the flat rod; The assembly through hole of the special-shaped tooth plate is sleeved on the tooth plate position convex ring of the clutch transmission component. At this time, the arc-shaped through groove of the special-shaped tooth plate is sleeved on the tooth plate shift head of the clutch transmission component, the special-shaped tooth plate passes through the special-shaped gear, and the arc-shaped internal rack of the special-shaped tooth plate is meshed with the internal teeth of the external gear of the special-shaped gear; the flange bearing on the lock core is sleeved on the other end of the cylinder of the special-shaped gear; the upper flange bearing of the clutch component is sleeved on the two arc-shaped clutch protrusions of the clutch base.

10. A clutch transmission device for a smart door lock as claimed in claim 9, characterized in that: The arcuate inner rack of the special-shaped tooth plate and the outer gear of the special-shaped gear form a gear set with a certain speed ratio in which internal teeth are meshed, so that when the handle and the clutch member have a one-way rotation angle of less than or equal to 40°, the one-way output angle of the special-shaped gear is greater than 180°, thereby achieving the requirement that the dial head of the door lock core needs to be rotated at least 180° to drive the square tongue of the door lock body.

11. A clutch transmission device for a smart door lock as claimed in claim 9, characterized in that: The arc-shaped through groove of the special-shaped tooth plate is wider than the tooth plate shift head of the clutch transmission member, and the axial transmission of the special-shaped tooth plate by the clutch transmission member is a state-type axial transmission; that is, when the clutch transmission member is driven by the clutch base and the handle to rotate axially, if the tooth plate shift head of the clutch transmission member can act on the edge of the arc-shaped through groove of the special-shaped tooth plate, the special-shaped tooth plate will follow the same axial rotation, and the special-shaped gear meshing with the inner teeth of the special-shaped tooth plate will also follow the axial rotation, thereby driving the flat rod and the shift head of the door lock core to rotate; on the contrary, if the tooth plate shift head of the clutch transmission member cannot act on the edge of the arc-shaped through groove of the special-shaped tooth plate, the special-shaped tooth plate will remain unchanged, and the special-shaped gear, the flat rod and the shift head of the door lock core will not rotate; this state-type axial transmission between the clutch member and the lock core driving member conforms to the state-type extension and contraction action of the square tongue of the door lock body in actual use.

12. A clutch transmission device for an intelligent door lock as claimed in claim 4, characterized in that: The oblique tongue driving component is composed of two sets of connecting rod structures and a square steel rotating head, including a first pull rod, a second pull rod, a first rotating head driving plate, a second rotating head driving plate, a first rivet, a second rivet, a square steel rotating head, a retaining ring, an upper flange bearing of the oblique tongue and a lower flange bearing of the oblique tongue, and is also equipped with a functional screw; The square steel rotary head is a cylinder with a square through hole inside and a fan-shaped dial head outside. The cylinder of the square steel rotary head is provided with a retaining ring groove, a driving plate position step and a direction mark, and the fan-shaped dial head of the square steel rotary head is also provided with a functional threaded hole; the first rotary head driving plate is provided with an assembly through hole, a driving foot, a bending dial head and a functional recess, and a rivet circular hole is provided on the driving foot, and the driving foot is bent upward; the second rotary head driving plate is provided with an assembly through hole, a driving foot, a bending dial head and a functional recess, and a rivet circular hole is provided on the driving foot; the first pull rod and the second pull rod are long sheet metal parts of the same specification, and are respectively provided with a first circular hole and a second circular hole at one end and a first through groove and a second through groove at the other end; The first rotary head driving plate is sleeved on the driving plate position step of the square steel rotary head through the assembly through hole, and the second rotary head driving plate is also sleeved on the driving plate position step of the square steel rotary head through the assembly through hole. Because the driving foot of the first rotary head driving plate is bent upward, the rivet circular hole of the first rotary head driving plate and the rivet circular hole of the second rotary head driving plate are at the same level, and the bending dial head of the first rotary head driving plate and the bending dial head of the second rotary head driving plate are staggered and stacked; the retaining spring is clamped on the retaining spring groove of the square steel rotary head to limit the first rotary head driving plate and the second rotary head driving plate; the first rivet passes through the The first through slot of the first pull rod and the rivet hole of the first rotor drive plate are connected by pressure rivets, and the second rivet passes through the second through slot of the second pull rod and the rivet hole of the second rotor drive plate and are connected by pressure rivets, and both connections are movable connections; the first circular hole of the first pull rod and the second circular hole of the second pull rod are respectively mounted on the two pull rod heads of the clutch transmission member; the inclined tongue upper flange bearing is mounted on one end of the cylinder of the square steel rotor, and the inclined tongue lower flange bearing is mounted on the other end of the cylinder of the square steel rotor, and the square steel rotor and the inclined tongue lower flange bearing are mounted in the square steel rotor assembly slot of the bottom shell of the device.

13. A clutch transmission device for a smart door lock as claimed in claim 12, characterized in that: The square steel rotating head can be adjusted up and down in the square steel rotating head assembly slot of the bottom shell of the device, that is, the hole distance between the cylinder of the square steel rotating head and the cylinder of the special-shaped gear can be adjusted; Rotate the square steel rotating head and point the direction mark of the square steel rotating head to the handle. At this time, the fan-shaped dial head of the square steel rotating head is located in the opposite direction of the handle; when the handle is rotated upward, that is, the handle is lifted, the clutch component is driven to unconditionally lift and lock the handle, and then drive the two sets of connecting rod structures of the oblique tongue driving component, but the bent dial head of the first rotating head driving piece and the bent dial head of the second rotating head driving piece cannot be dialed to the fan-shaped dial head of the square steel rotating head, and the square steel rotating head is not linked at this time; when the handle is rotated downward, that is, the handle is pressed down, and the clutch component is in a closed state, the clutch component is driven and then the two sets of connecting rod structures of the oblique tongue driving component are driven, the bent dial head of the first rotating head driving piece or the bent dial head of the second rotating head driving piece can be dialed to the fan-shaped dial head of the square steel rotating head, and at this time the square steel rotating head follows the handle to rotate in the same direction as the axis.

14. A clutch transmission device for a smart door lock as claimed in claim 12, characterized in that: The square steel turntable is located in the square steel turntable assembly groove of the cover plate and can move up and down. The square steel turntable is adjusted to a set height position, and the square steel turntable is rotated so that the direction mark of the square steel turntable points downward. At this time, the functional recess of the first turntable driving plate, the functional recess of the second turntable driving plate and the functional threaded hole of the square steel turntable overlap and align, and the functional screw can be screwed into the functional threaded hole of the square steel turntable, and the screw head of the functional screw is located in the functional recess of the first turntable driving plate and the functional recess of the second turntable driving plate. The two groups of connecting rod structures of the oblique tongue driving component can respectively drive the functional screw through the functional recess of the first turntable driving plate and the functional recess of the second turntable driving plate, and then drive the square steel turntable to make positive and negative axial movements, thereby realizing the function that the lock tongue of the lock body on the door can be bidirectionally driven and retracted by the square steel.

15. The clutch transmission device for intelligent door lock according to claim 9, characterized in that: The cover plate component comprises a cover plate, an adjustment plate, two groups of mounting screws and a group of adjusting screws, the cover plate is provided with a clutch base assembly special-shaped through hole, an output gear assembly through hole, a square steel swivel assembly through groove, two groups of mounting screw holes and two groups of upper and lower adjusting screw holes, the adjustment plate is provided with a square steel swivel assembly through groove and a group of adjusting screw holes, the clutch base assembly special-shaped through hole, the output gear assembly through hole and the square steel swivel assembly through groove of the cover plate respectively correspond to the clutch base assembly through hole, the output gear assembly through hole and the square steel swivel assembly through groove of the bottom shell of the device, taking the clutch base assembly special-shaped through hole of the cover plate as a reference, the square steel swivel assembly through groove of the cover plate is located directly above the clutch base assembly special-shaped through hole of the cover plate, the output gear assembly through hole of the cover plate is located directly below the clutch base assembly special-shaped through hole of the cover plate, and the upper and lower groups of adjusting screw holes of the cover plate are respectively located on both sides of the square steel swivel assembly through groove of the cover plate; The middle circular notch of the clutch base assembly special-shaped through hole of the cover plate is sleeved on the two arc-shaped clutch protrusions of the clutch base and the upper flange bearing of the clutch component. The long circular notches on both sides of the clutch base assembly special-shaped through hole of the cover plate can correspond to the reversing screws respectively, which is convenient for the disassembly and assembly of the reversing screws when the handle is reversing in the later stage. The output gear assembly through hole of the cover plate is sleeved on the special-shaped gear and the upper flange bearing of the lock cylinder. The square steel rotating head assembly through groove of the cover plate is sleeved on the square steel rotating head and the upper flange bearing of the oblique tongue. The cover plate is fixed to the bottom shell of the device through the two groups of mounting screw holes with the two groups of mounting screws; all components of the clutch transmission device are carried and limited by the cover plate and the bottom shell of the device; The square steel turntable assembly groove of the adjustment plate is also mounted on the square steel turntable and the upper flange bearing of the inclined tongue. The adjustment plate can be installed on the upper adjustment screw hole of the cover plate or the upper adjustment screw hole respectively using the adjustment screw through the adjustment screw hole.

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