Smart door lock opening and closing mechanism and smart door lock

Abstract

The present application relates to an opening and closing mechanism for a smart door lock and a smart door lock. The opening and closing mechanism includes: a housing, a latch bolt assembly, a square bolt assembly, a first transmission assembly, and a second transmission assembly. The housing is used to be mounted on a door body. The latch bolt assembly includes a latch bolt that extends or retracts along the width of the housing. The square bolt assembly includes a rack and a square bolt that extends or retracts along the width of the housing. The rack is connected to the square bolt. The first transmission assembly includes a paddle, a first gear, and a first transmission member. The paddle is connected to the latch bolt assembly. The first transmission member is connected to the first gear and is located in the same plane as the paddle. Rotation of the first gear drives the first transmission member to rotate, thereby driving the paddle to move. The movement of the paddle drives the latch bolt to move. The second transmission assembly meshes with the first gear and the rack, respectively. The opening and closing mechanism allows the square bolt and the latch bolt to retract together into the housing, thereby reducing the time a user has to wait for unlocking and improving the user experience.

Description

Technical Field

[0001] The present application relates to the field of automatic locks, and in particular to an opening and closing mechanism of a smart door lock and a smart door lock. Background Art

[0002] As people's living standards improve, the requirements for door locks are gradually increasing. Therefore, more and more types of door locks appear in people's lives. At present, more and more users like to install electronic automatic locks.

[0003] A common automatic lock body includes a lock shell, a slant tongue assembly, a square tongue assembly, a main transmission member, a driving mechanism, and a slant tongue recovery structure. The slant tongue assembly, the square tongue assembly and the driving mechanism are all installed on the lock shell; the main transmission member is rotatably connected to the lock shell and cooperates with the square tongue assembly to drive the square tongue assembly to extend out of the lock shell or retract into the lock shell; the driving mechanism is used to drive the main transmission member to rotate; the slant tongue retraction structure is placed on the square tongue assembly and cooperates with the main transmission member and the slant tongue assembly. It is used to drive the slant tongue assembly to retract into the lock shell under the drive of the main transmission member after the square tongue assembly is retracted into the lock shell.

[0004] When in use, the driving mechanism can drive the main transmission part to rotate, and the main transmission part first drives the square tongue assembly to retract into the lock shell, and then drives the oblique tongue assembly to retract into the lock shell through the oblique tongue recovery structure, which can realize the fully automatic retraction of the square tongue assembly and the oblique tongue assembly, but the recovery of the oblique tongue and the square tongue is not synchronized, so the user needs to wait for the oblique tongue to be recovered after the square tongue is recovered, which makes the user wait for a long time to unlock, reducing the user's experience. Summary of the Invention

[0005] The purpose of this application is to provide an opening and closing mechanism of a smart door lock and a smart door lock, wherein the opening and closing structure can retract the square tongue and the oblique tongue into the shell together, thereby reducing the user's waiting time for unlocking and improving the user's experience.

[0006] To this end, in the first aspect, an embodiment of the present application provides an opening and closing mechanism, comprising: a shell for being installed with a door body; a slanted tongue assembly, comprising a slanted tongue slidably connected to the shell, the slanted tongue extending out or retracting into the shell along the width direction of the shell; a square tongue assembly, comprising a rack and a square tongue slidably connected to the shell, the square tongue extending out or retracting into the shell along the width direction of the shell, the rack being connected to the square tongue and extending along the width direction of the shell; a first transmission assembly, comprising a paddle, a first gear and a first transmission member, one end of the paddle being connected to the slanted tongue assembly, the first transmission member being connected to the first gear and being located in the same plane as the paddle, the rotation of the first gear drives the first transmission member to rotate, thereby driving the paddle to move, the paddle moves to drive the slanted tongue to move, and a second transmission assembly, meshing with the first gear and the rack, the rotation of the first gear drives the second transmission assembly to rotate, the second transmission assembly rotates, thereby driving the rack to move.

[0007] In one possible implementation, the second transmission assembly includes: a second gear meshing with the first gear, the second gear being provided with an arc-shaped positioning hole; and a third gear meshing with the rack, the third gear being coaxially arranged with the second gear, the third gear being provided with a positioning block, the positioning block being placed in the positioning hole and being movable along the extension direction of the positioning hole.

[0008] In a possible implementation, during the unlocking process, a movement path of the first transmission member before contacting the paddle is a locking distance, and the locking distance is negatively correlated with a size of the third gear.

[0009] In one possible implementation, the square tongue is provided with a bayonet along the height direction of the shell, the square tongue assembly also includes a stop plate slidably connected to the shell, the stop plate is provided with a buckle adapted for the bayonet, the first transmission assembly also includes a second transmission member connected to the first gear, the second transmission member and the stop plate are located in the same plane, and the second transmission member drives the stop plate to move along the height direction of the shell.

[0010] In a possible implementation, a first elastic member is further included, one end of the first elastic member is connected to the stop plate, the other end of the first elastic member is connected to the shell, and the elastic force direction of the first elastic member is the same as the height direction of the shell.

[0011] In a possible implementation, the retaining plate is provided with a sliding hole extending along a height direction of the housing, and the housing is provided with a guide member extending into the sliding hole.

[0012] In a possible implementation, the length of the sliding hole is positively correlated with the arc length of the positioning hole.

[0013] In a possible implementation, the device further includes a driving member and a fourth gear, wherein the output end of the driving member is engaged with the fourth gear, and the fourth gear is engaged with the first gear.

[0014] In one possible implementation, the paddle is connected to the slide; a transmission rod, one end of which is connected to the oblique tongue and the other end of which is connected to the slide; and a second elastic member, one end of which is used to be connected to the oblique tongue and the other end of which is used to be connected to the slide.

[0015] In a second aspect, an embodiment of the present application provides a smart door lock, comprising an opening and closing mechanism of the smart door lock described in any one of the above items.

[0016] According to the opening and closing mechanism of the smart door lock and the smart door lock provided in the embodiment of the present application, the opening and closing mechanism includes: a shell, a slanted tongue assembly, a square tongue assembly, a first transmission assembly and a second transmission assembly, and the shell is used to be installed with the door body; the slanted tongue assembly includes a slanted tongue slidingly connected to the shell, and the slanted tongue extends out or is retracted into the shell along the width direction of the shell; the square tongue assembly includes a rack and a square tongue slidingly connected to the shell, and the square tongue extends out or is retracted into the shell along the width direction of the shell, and the rack is connected to the square tongue and extends along the width direction of the shell; the first transmission assembly includes a paddle, a first gear and a first transmission member, one end of the paddle is connected to the slanted tongue assembly, the first transmission member is connected to the first gear and is located in the same plane as the paddle, the rotation of the first gear drives the first transmission member to rotate, thereby driving the paddle to move, and the movement of the paddle drives the slanted tongue to move; the second transmission assembly is respectively engaged with the first gear and the rack, the rotation of the first gear drives the second transmission assembly to rotate, and the second transmission assembly rotates, thereby driving the rack to move. When the first gear rotates, the first gear drives the first transmission member to rotate, and the first transmission member drives the paddle to move, and the paddle movement drives the inclined tongue to move to unlock. At the same time, the rotation of the first gear also drives the second transmission assembly to move, and the second transmission assembly drives the rack to move, and the rack drives the square tongue to unlock, so that the inclined tongue and the square tongue are simultaneously recovered into the inner cavity of the shell, that is, the user does not need to wait until the square tongue is unlocked and then wait for the inclined tongue to unlock before completely unlocking, thereby reducing the unlocking time and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A schematic structural diagram of an opening and closing mechanism provided in an embodiment of the present application is shown;

[0021] Figure 2 A partial exploded view of an opening and closing mechanism provided in an embodiment of the present application is shown;

[0022] Figure 3 An exploded view of a tongue assembly provided in an embodiment of the present application is shown;

[0023] Figure 4 A schematic structural diagram of a square tongue provided in an embodiment of the present application is shown;

[0024] Figure 5 A schematic diagram of the partial structure of an opening and closing mechanism provided in an embodiment of the present application is shown;

[0025] Figure 6 A schematic structural diagram showing the first transmission assembly and the second transmission assembly of the present application is shown;

[0026] Figure 7 A structural schematic diagram of a second transmission assembly provided in an embodiment of the present application is shown.

[0027] Description of reference numerals:

[0028] 1. Housing; 11. Guide member; 12. Rotating mouth; 2. Oblique tongue assembly; 21. Oblique tongue; 22. Slide seat; 23. Transmission rod; 24. Second elastic member; 25. Retraction member; 3. Square tongue assembly; 31. Rack; 32. Square tongue; 321. Bayonet; 33. Retraction plate; 331. Buckle; 332. First elastic member; 333. Sliding hole; 4. First transmission assembly; 41. Paddle; 42. First gear; 43. First transmission member; 44. Second transmission member; 5. Second transmission assembly; 51. Second gear; 511. Positioning hole; 52. Third gear; 521. Positioning block; 6. Driving member; 7. Fourth gear; L. Locking distance. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] The disclosure below provides many different embodiments or examples for implementing different configurations of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0031] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0032] Figure 1 A schematic structural diagram of an opening and closing mechanism provided in an embodiment of the present application is shown. Figure 2 A partial exploded view of an opening and closing mechanism provided in an embodiment of the present application is shown. Figure 3 An exploded view of a tongue assembly provided in an embodiment of the present application is shown.

[0033] like Figures 1 to 3 As shown, an embodiment of the present application provides an opening and closing mechanism, including a housing 1, an inclined tongue assembly 2, a square tongue assembly 3, a first transmission assembly 4 and a second transmission assembly 5.

[0034] The shell 1 is used to be installed with the door body. The inclined tongue assembly 2 includes an inclined tongue 21 that is slidably connected to the shell 1. The inclined tongue 21 extends out or is retracted into the shell 1 along the width direction of the shell 1. The square tongue assembly 3 includes a rack 31 and a square tongue 32 that is slidably connected to the shell 1. The square tongue 32 extends out or is retracted into the shell 1 along the width direction of the shell 1. The rack 31 is connected to the square tongue 32 and extends along the width direction of the shell 1.

[0035] It should be understood that during installation, the shell 1 is installed with the door body, and the inclined tongue assembly 2 includes an inclined tongue 21, which is slidingly connected to the shell 1. When locking is required, the inclined tongue 21 extends out of the shell 1 along the width direction of the shell 1 and extends into the door frame for locking. When unlocking, the inclined tongue 21 retracts along the width direction of the shell 1 to the inner cavity of the shell 1, so that the inclined tongue 21 is disengaged from the door frame to facilitate the unlocking setting.

[0036] The latch assembly 3 includes a latch 32, which is slidably connected to the housing 1. When locking, the latch 32 extends from the housing 1 along its width and into the door frame for locking. When unlocking, the latch 32 retracts along its width into the interior of the housing 1, disengaging the latch 21 from the door frame for easier unlocking. The latch 32 is also connected to a rack 31, which can be secured to the latch 32 by bolts, welding, or adhesive bonding. The rack 31 extends along the width of the housing 1.

[0037] The first transmission assembly 4 includes a paddle 41, a first gear 42 and a first transmission member 43. One end of the paddle 41 is connected to the oblique tongue assembly 2. The first transmission member 43 is connected to the first gear 42 and is located in the same plane as the paddle 41. The rotation of the first gear 42 drives the first transmission member 43 to rotate, thereby driving the paddle 41 to move. The movement of the paddle 41 drives the oblique tongue 21 to move.

[0038] The first transmission assembly 4 includes a paddle 41, one end of which is connected to the latch bolt assembly 2. The movement or rotation of the paddle 41 can drive the latch bolt 21 to move. The other end of the paddle 41 can be a free end not connected to any parts. The other end of the paddle 41 can also be rotatably connected to the housing 1 through a rotating shaft. The paddle 41 is coaxially arranged with the first gear 42, that is, the first gear 42 and the paddle 41 are sleeved on the same rotating shaft.

[0039] The first gear 42 is connected to a first transmission member 43, which is integrally formed with the first gear 42. This application does not limit the shape of the first transmission member 43. In one embodiment, the first transmission member 43 is an arc-shaped block. When the first gear 42 rotates, it drives the first transmission member 43 to rotate. The first transmission member 43 and the paddle 41 are coplanar. When the first transmission member 43 rotates to the paddle 41, it contacts the paddle 41 and drives the paddle 41 to rotate. As the paddle 41 rotates about the axis, the other end of the paddle 41 drives the latch bolt assembly 2 to retract along the width of the housing 1 into the inner cavity of the housing 1, thereby unlocking the door.

[0040] The second transmission assembly 5 meshes with the first gear 42 and the rack 31. Rotation of the first gear 42 drives the second transmission assembly 5, which in turn drives the rack 31. The second transmission assembly 5 can comprise a single gear or multiple intermeshing gears. The second transmission assembly 5 meshes with the first gear 42 and the rack 31. That is, when the first gear 42 rotates, the second transmission assembly 5 rotates, which in turn drives the rack 31 to move along its length. Specifically, the rack 31 drives the tongue 32 to retract along the width of the housing 1 into the interior of the housing 1, thereby unlocking the door.

[0041] When the first gear 42 rotates, the first transmission component 4 can drive the inclined tongue 21 to unlock, and the second transmission component 5 can also drive the square tongue 32 to unlock, so that the inclined tongue 21 and the square tongue 32 are simultaneously recovered into the inner cavity of the shell 1, that is, the user does not need to wait until the square tongue 32 is unlocked and then wait for the inclined tongue 21 to unlock before completely unlocking, thereby reducing the unlocking time and improving the user experience.

[0042] Reference Figure 3 and Figure 4 , Figure 4 A schematic diagram of the structure of a square tongue provided in an embodiment of the present application is shown. In some optional embodiments, the square tongue 32 is provided with a bayonet 321 along the height direction of the housing 1. The square tongue assembly 3 also includes a retaining plate 33 slidably connected to the housing 1, and the retaining plate 33 is provided with a buckle 331 adapted to fit the bayonet 321. The first transmission assembly 4 also includes a second transmission member 44 connected to the first gear 42. The second transmission member 44 and the retaining plate 33 are located in the same plane, and the second transmission member 44 drives the retaining plate 33 to move along the height direction of the housing 1.

[0043] The square tongue 32 is provided with a bayonet 321 along the height direction of the shell 1. The bayonet 321 can be set above the square tongue 32 or below the square tongue 32. The setting of the bayonet 321 is set according to the position of the second transmission member 44. When the second transmission member 44 is located above the square tongue 32, the bayonet 321 is set below the square tongue 32. When the second transmission member 44 is located below the square tongue 32, the bayonet 321 is located above the square tongue 32.

[0044] In one example, the second transmission member 44 is located above the square tongue 32 , and the bayonet 321 is disposed below the square tongue 32 .

[0045] The tongue assembly 3 also includes a retaining plate 33, which is slidably connected to the housing 1, allowing it to move along the height direction of the housing 1. The retaining plate 33 is provided with a buckle 331 adapted to fit within the bayonet 321. When the buckle 331 is inserted into the bayonet 321, the retaining plate 33 locks the tongue 32, preventing the tongue 32 from moving along the width direction of the housing 1, thereby maintaining the tongue 32 in an unlocked or locked state. When the buckle 331 is disengaged from the bayonet 321, the tongue 32 can move along the width direction of the housing 1, thereby adjusting the tongue 32 from a locked state to an unlocked state, or vice versa.

[0046] The backstop plate 33 and the second transmission member 44 are located in the same plane. The second transmission member 44 is connected to the first gear 42 and can be connected in an integrated manner. The present application does not limit the shape of the second transmission member 44. In one example, the second transmission member 44 is cylindrical, that is, the circumference of the second transmission member 44 abuts against the backstop plate 33 to avoid damage to the second transmission member 44. When the first gear 42 rotates, the second transmission member 44 rotates with the first gear 42, thereby causing the second transmission member 44 to move toward the backstop plate 33. When the second transmission member 44 contacts the backstop plate 33, the second transmission member 44 drives the backstop plate 33 to move along the height direction of the housing 1, causing the buckle 331 to disengage from the bayonet 321.

[0047] Among them, there are multiple bayonet holes 321 and they are arranged at intervals along the length direction of the square tongue 32. There are also multiple buckles 331 and they are arranged at intervals along the length direction of the retaining plate 33. The number of buckles 331 is less than the number of bayonet holes 321, so that the locked state or unlocked state can be determined by the engagement position of the buckles 331 and the bayonet holes 321.

[0048] In some optional embodiments, a first elastic member 332 is further included. One end of the first elastic member 332 is connected to the retaining plate 33, and the other end of the first elastic member 332 is connected to the housing 1. The elastic force of the first elastic member 332 is in the same direction as the height of the housing 1. The first elastic member 332 can be an elastic member such as a spring or a tension spring. When the tongue 32 is adjusted, the second transmission member 44 no longer abuts the retaining plate 33, and the first elastic member 332 retracts, engaging the buckle 331 with the bayonet 321.

[0049] In some optional embodiments, the backstop plate 33 is provided with a sliding hole 333 extending along the height direction of the housing 1, and the housing 1 is provided with a guide 11, and the guide 11 extends into the sliding hole 333. The guide 11 and the housing 1 can be connected in an integrally formed manner. The present application does not limit the shape of the guide 11. In one example, the guide 11 is cylindrical to facilitate relative sliding between the sliding hole 333 and the guide 11. The sliding hole 333 extends along the height direction of the housing 1, limiting the sliding of the backstop plate 33 along the height direction of the housing 1. The number of the sliding holes 333 and the guide 11 can be multiple to ensure the smooth movement of the backstop plate 33.

[0050] Reference Figure 5-Figure 7 , Figure 5 A partial structural diagram of an opening and closing mechanism provided in an embodiment of the present application is shown. Figure 6 A schematic diagram showing the structure of the first transmission assembly and the second transmission assembly of the present application is shown. Figure 7 A structural schematic diagram of a second transmission assembly provided in an embodiment of the present application is shown.

[0051] In some optional embodiments, the second transmission assembly 5 includes a second gear 51 and a third gear 52, the second gear 51 is engaged with the first gear 42, and the second gear 51 is provided with an arc-shaped positioning hole 511; the third gear 52 is engaged with the rack 31, and the third gear 52 is coaxially arranged with the second gear 51, and the third gear 52 is provided with a positioning block 521, which is placed in the positioning hole 511 and can move along the extension direction of the positioning hole 511.

[0052] The second gear 51 is connected to the housing 1 via a rotating shaft. This means the second gear 51 is rotationally connected to the housing 1 and meshes with the first gear 42. When the first gear 42 rotates, the second gear 51 rotates simultaneously. The second gear 51 is provided with a positioning hole 511 that extends through the thickness of the second gear 51 and is arc-shaped, centered at the center of the second gear 51.

[0053] The third gear 52 is coaxially arranged with the second gear 51 and is sleeved on the same rotating shaft. The third gear 52 is provided with a positioning block 521. The positioning block 521 is integrally formed with the third gear 52. The positioning block 521 extends into the positioning hole 511 and is movable along the extension direction of the positioning hole 511. In other words, when the second gear 51 rotates, the positioning hole 511 also rotates. When the inner wall of the positioning hole 511 abuts the positioning block 521, the rotation of the second gear 51 drives the third gear 52 to rotate as well. The third gear 52 meshes with the rack 31. The rotation of the third gear 52 drives the rack 31 to move along the width direction of the housing 1, thereby driving the latch 32 to unlock or close.

[0054] When the second transmission member 44 pushes the retaining plate 33 to disengage from the square tongue 32 along the height direction of the shell 1, the positioning hole 511 rotates relative to the positioning block 521. When the buckle 331 of the retaining plate 33 is completely disengaged from the bayonet 321 of the square tongue 32, the inner wall of the positioning hole 511 abuts against the positioning block 521, thereby driving the third gear 52 to rotate. The third gear 52 drives the rack 31 to rotate, and then drives the square tongue 32 to move along the width direction of the shell 1.

[0055] Reference Figure 6 In some optional embodiments, during the unlocking process, the movement path of the first transmission member 43 before contacting the paddle 41 is a locking distance L, and the locking distance L is negatively correlated with the size of the third gear 52 .

[0056] During the unlocking process, a larger locking distance L means a longer time for the first transmission member 43 to contact the paddle 41, while a smaller locking distance L means a shorter time for the first transmission member 43 to contact the paddle 41. A larger third gear 52 means a faster movement of the rack 31, while a smaller third gear 52 means a slower movement of the rack 31. If simultaneous retraction of the square bolt 32 and the oblique bolt 21 is desired, the locking distance L and the size of the third gear 52 should be inversely correlated. A larger locking distance L means a smaller third gear 52, while a smaller locking distance L means a larger third gear 52. This ensures simultaneous retraction of the square bolt 32 and the oblique bolt 21.

[0057] When locked, the length of the square tongue 32 extending from the housing 1 is greater than the length of the oblique tongue 21 extending from the housing 1. If the square tongue 32 and the oblique tongue 21 are to be retracted simultaneously, the square tongue 32 needs to be partially retracted first and then retracted together with the oblique tongue 21.

[0058] Reference Figure 5-Figure 7 In some optional embodiments, the length of the sliding hole 333 is positively correlated with the arc length of the positioning hole 511. The length of the sliding hole 333 represents the maximum distance that the retaining plate 33 can slide along the height direction of the housing 1, and the arc length of the positioning hole 511 represents the waiting time before the third gear 52 rotates. Therefore, in order to prevent the movement of the square tongue 32 from interfering with the retaining plate 33, the length of the sliding hole 333 is positively correlated with the arc length of the positioning hole 511. That is, the longer the arc length of the sliding hole 333, the smaller the length of the sliding hole 333, and the smaller the arc of the positioning hole 511.

[0059] Reference Figure 1 and Figure 5In some optional embodiments, the drive member 6 and the fourth gear 7 are further included. The output end of the drive member 6 meshes with the fourth gear 7, and the fourth gear 7 meshes with the first gear 42. The drive member 6 is a motor, and the output end of the motor is connected to a gear. The fourth gear 7 is provided with helical teeth and spur teeth. The gear of the motor meshes with the helical teeth of the fourth gear 7, and the spur teeth of the fourth gear 7 mesh with the first gear 42. That is, the rotation of the motor drives the fourth gear 7 to rotate through the gear, and the rotation of the fourth gear 7 drives the first gear 42 to rotate.

[0060] In some optional embodiments, the inclined tongue assembly 2 further includes a slide 22, a transmission rod 23 and a second elastic member 24, the slide 22 is slidably connected to the shell 1 along the width direction of the shell 1, and the paddle 41 is connected to the slide 22; one end of the transmission rod 23 is connected to the inclined tongue 21, and the other end is connected to the slide 22; one end of the second elastic member 24 is used to connect to the inclined tongue 21 and the other end is used to connect to the slide 22.

[0061] The shell 1 is provided with a sliding hole, which extends along its own width direction. The slide seat 22 extends into the sliding hole to facilitate sliding connection with the shell 1. The slide seat 22 is provided with an installation groove for installing the paddle 41. The paddle 41 extends into the installation groove and is connected to the slide seat 22.

[0062] The transmission rod 23 is arranged in a cylindrical shape. One end of the transmission rod 23 is connected to the inclined tongue 21, and can be connected by welding, one-piece molding or bolt connection. The other end of the transmission rod 23 passes through the slide 22 and is connected to the slide 22. That is, when the slide 22 moves along the width direction of the shell 1, it drives the transmission rod 23 to move.

[0063] The latch bolt assembly 2 also includes a second elastic member 24, a spring-like structure. The second elastic member 24 is mounted on the transmission rod 23 to prevent the second elastic member 24 from tilting during extension or return. One end of the second elastic member 24 is connected to the slide 22, and the other end is connected to the latch bolt 21. When the latch bolt 21 retracts into the housing 1, the second elastic member 24 is in a stretched state. When the first transmission member 43 moves away from the paddle 41, the second elastic member 24 returns to its original position, allowing the latch bolt 21 to extend out of the housing 1 under the action of the second elastic member 24.

[0064] In some optional embodiments, the latch bolt assembly 2 further includes a stopper 25 rotatably connected to the housing 1. The stopper 25 is plate-shaped and connected to the housing 1. When the latch bolt 21 retracts into the interior of the housing 1, the stopper 25 abuts against the latch bolt 21 at one end thereof facing the latch bolt 21, thereby preventing the latch bolt 21 from excessively retracting.

[0065] In some optional embodiments, the housing 1 defines a rotating opening 12 adapted to accommodate the latch bolt 21. The latch bolt 21 is rotatably connected to a transmission rod 23, allowing the latch bolt 21 to rotate about the central axis of the transmission rod 23. A retaining member 25 is rotatably connected to the housing 1. After the opening and closing mechanism is installed, the retaining member 25 rotates without affecting the retraction of the latch bolt 21. The latch bolt 21 retracts to the housing 1 and is positioned at the rotating opening 12. The installer can then rotate the latch bolt 21 to adjust its forward and reverse position, thereby enhancing installation convenience.

[0066] Reference Figures 1-6 , the technical solution provided by this embodiment is described below in conjunction with specific application scenarios.

[0067] When the opening and closing mechanism is in a locked state and needs to be unlocked, the driving member 6 drives the fourth gear 7 to rotate, and the rotation of the fourth gear 7 drives the first gear 42 to rotate.

[0068] When the first gear 42 rotates, the first transmission member 43 moves toward the paddle 41, and the second transmission member 44 abuts the backstop plate 33, so that the buckle 331 of the backstop plate 33 disengages from the bayonet 321 of the square tongue 32. The rotation of the first gear 42 drives the second gear 51 to rotate, and the positioning hole 511 of the second gear 51 rotates relative to the positioning block 521 of the third gear 52.

[0069] When the inner wall of the positioning hole 511 of the second gear 51 abuts the positioning block 521, the third gear 52 is driven to rotate. The rotation of the third gear 52 drives the rack 31 to move, causing the square tongue 32 to retract along the width direction of the housing 1. Because the length of the square tongue 32 extending from the housing 1 is longer than the length of the oblique tongue 21 extending from the housing 1, when the square tongue 32 retracts partially until the length of the square tongue 32 extending from the housing 1 is the same as the length of the oblique tongue 21 extending from the housing 1, the first transmission member 43 abuts the paddle 41, driving the oblique tongue 21 to retract along the width direction of the housing 1. In other words, the square tongue 32 and the oblique tongue 21 retract together into the housing 1.

[0070] This application also includes a smart door lock, including the opening and closing mechanism of the smart door lock described in any of the above items.

[0071] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0072] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0073] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An opening and closing mechanism of an intelligent door lock, characterized in that: include: Shell, used for installation with door body; a latch assembly comprising a latch slidably connected to the housing, the latch extending out of or retracting into the housing along a width direction of the housing; a tongue assembly comprising a rack and a tongue slidably connected to the housing, the tongue extending or retracting along the width of the housing, the rack being connected to the tongue and extending along the width of the housing; A first transmission assembly includes a paddle, a first gear, and a first transmission member. One end of the paddle is connected to the latch tongue assembly. The first transmission member is connected to the first gear and is located in the same plane as the paddle. The rotation of the first gear drives the first transmission member to rotate to drive the paddle to move. The movement of the paddle drives the latch tongue to move. A second transmission assembly is engaged with the first gear and the rack respectively, and the rotation of the first gear drives the second transmission assembly to rotate, thereby driving the rack to move; The second transmission assembly includes: a second gear meshing with the first gear; a third gear meshing with the rack, and the third gear is coaxially arranged with the second gear; The square tongue is provided with a bayonet along the height direction of the shell, and the square tongue assembly also includes a stop plate slidably connected to the shell, and the stop plate is provided with a buckle adapted for the bayonet, and the first transmission assembly also includes a second transmission member connected to the first gear, and the second transmission member and the stop plate are located in the same plane, and the second transmission member drives the stop plate to move along the height direction of the shell.

2. The opening and closing mechanism of the smart door lock according to claim 1, characterized in that: The second gear is provided with an arc-shaped positioning hole; and The third gear is provided with a positioning block, and the positioning block is placed in the positioning hole and can move along the extending direction of the positioning hole.

3. The opening and closing mechanism of the smart door lock according to claim 2, characterized in that: During the unlocking process, the movement path of the first transmission member before contacting the paddle is a locking distance, and the locking distance is negatively correlated with the size of the third gear.

4. The opening and closing mechanism of the smart door lock according to claim 3, characterized in that: It also includes a first elastic member, one end of the first elastic member is connected to the retaining plate, and the other end is connected to the shell, and the elastic force direction of the first elastic member is the same as the height direction of the shell.

5. The opening and closing mechanism of the smart door lock according to claim 3, characterized in that: The retaining plate is provided with a sliding hole extending along the height direction of the shell, and the shell is provided with a guide member, and the guide member extends into the sliding hole.

6. The opening and closing mechanism of the smart door lock according to claim 5, characterized in that: The length of the sliding hole is positively correlated with the arc length of the positioning hole.

7. The opening and closing mechanism of the smart door lock according to claim 1, characterized in that: It also includes a driving member and a fourth gear, wherein the output end of the driving member is engaged with the fourth gear, and the fourth gear is engaged with the first gear.

8. The opening and closing mechanism of the smart door lock according to claim 1, characterized in that: The latch bolt assembly further comprises: a slide seat, slidably connected to the housing along a width direction of the housing, and the paddle is connected to the slide seat; a transmission rod, one end of which is connected to the latch bolt, and the other end of which is connected to the slide seat; and The second elastic member has one end connected to the oblique tongue and the other end connected to the sliding seat.

9. A smart door lock, characterized in that: An opening and closing mechanism for a smart door lock comprising the method according to any one of claims 1 to 8.

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