Rear panel assembly and intelligent door lock

Abstract

The utility model discloses a rear panel assembly and an intelligent door lock. The rear panel assembly comprises a rear bottom plate, a driving shaft, a fixing structure and a rear panel. The driving shaft is arranged on the rear bottom plate; the fixing structure is used for limiting the driving shaft to the rear bottom plate so that the driving shaft can rotate in the circumferential direction and can be limited in the axial direction. The rear panel is connected to the rear bottom plate, a rotatable knob is arranged on the rear panel in a penetrating mode, and the knob is used for driving the driving shaft to rotate. According to the technical scheme, the assembling efficiency of the rear panel assembly can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent door locks, and in particular to a rear panel component and an intelligent door lock. Background Art

[0002] At present, the rear panel assembly of the smart door lock usually includes a rear panel, a knob provided on one side of the rear panel, a rear bottom plate covered on the other side of the rear panel, and a driving shaft provided on the rear bottom plate, so that when the user drives the knob to rotate, the corresponding driving shaft can be driven to rotate to realize the opening and closing of the lock body of the smart door lock. However, the driving shaft and the rear bottom plate in the rear panel assembly of the current smart door lock are usually separately and independently arranged and respectively installed on the door body. At this time, in the process of the driving shaft and the rear bottom plate being respectively installed on the door body twice, it is difficult to ensure the relative position relationship between the driving shaft and the rear bottom plate, and then it is difficult to ensure the corresponding relationship between the driving shaft and the knob on the rear panel subsequently connected to the rear bottom plate, resulting in a relatively complicated assembly process of the rear panel assembly and easily affecting the assembly efficiency of the rear panel assembly. Utility Model Content

[0003] The main purpose of the utility model is to provide a rear panel assembly, aiming to improve the assembly efficiency of the rear panel assembly.

[0004] To achieve the above-mentioned purpose, the rear panel assembly proposed by the utility model is applied to a smart door lock, and the rear panel assembly includes:

[0005] rear bottom plate;

[0006] A drive shaft, the drive shaft being arranged on the rear bottom plate;

[0007] A fixing structure, the fixing structure is used to limit the drive shaft to the rear bottom plate, so that the drive shaft can rotate circumferentially and is axially limited; and

[0008] A rear panel is connected to the rear bottom plate, and a rotatable knob is provided on the rear panel, and the knob is used to drive the driving shaft to rotate.

[0009] Optionally, the fixing structure includes a clamping member, which is connected to the rear bottom plate and cooperates with the rear bottom plate to clamp and limit the driving shaft.

[0010] Optionally, the clamping member comprises a clamping plate and a side panel connected to each other, wherein the side panel is disposed around the periphery of the clamping plate and is combined with the clamping plate to form a mounting groove;

[0011] The clamping member is arranged on the driving shaft through the mounting groove cover, and the clamping plate is provided with a first clearance hole at a position corresponding to the driving shaft, and the driving shaft is connected to one end of the knob and / or the knob is connected to one end of the driving shaft through the first clearance hole.

[0012] Optionally, the drive shaft sleeve located in the mounting groove is provided with a first gear, the rear panel assembly further comprises a transmission shaft, the transmission shaft is rotatably arranged in the mounting groove and arranged side by side with the transmission shaft, the transmission shaft sleeve is provided with a second gear, and the second gear is meshed with the first gear;

[0013] The rear bottom plate is provided with a second clearance hole at a position corresponding to the transmission shaft, and the transmission shaft passes through the second clearance hole.

[0014] Optionally, the driving shaft sleeve located in the mounting groove is provided with a first limiting ring, the first gear sleeve is arranged at the first limiting position, and the clamping plate and the rear bottom plate are respectively clamped at opposite sides of the first limiting ring;

[0015] And / or, the transmission shaft sleeve located in the installation groove is provided with a second limiting ring, the second gear sleeve is arranged at the second limiting ring, and the clamping plate and the rear bottom plate are respectively clamped at opposite sides of the second limiting ring;

[0016] And / or, in the axial direction of the drive shaft, the drive shaft comprises a main shaft and a connecting section which are connected in sequence, at least a part of the connecting section is located outside the mounting groove, the cross section of the connecting section is non-circular, and the connecting section is connected to the knob;

[0017] And / or, the rear bottom plate is provided with a positioning hole, and an end of the driving shaft away from the knob can be inserted into the positioning hole;

[0018] And / or, the transmission shaft is provided with a plug hole, the plug hole is extended along the axial direction of the transmission shaft and is arranged in a non-circular shape;

[0019] And / or, the first gear and the second gear are both made of zinc alloy.

[0020] Optionally, the fixing structure further includes a locking screw, and the locking screw is used to connect the rear base plate and the clamping member.

[0021] Optionally, a recessed groove is provided on a side of the rear bottom plate facing away from the clamping member, and the locking screw is arranged in the recessed groove.

[0022] Optionally, the rear panel is provided with a receiving groove, the rear bottom plate covers the notch of the receiving groove, and the driving shaft and the clamping member are arranged in the receiving groove.

[0023] Optionally, the knob is rotatably disposed on a side of the rear panel away from the rear base plate, and the rear panel assembly also includes an extension shaft, one end of which is connected to the knob, and the other end extends through the rear panel into the accommodating groove and is connected to the driving shaft.

[0024] The utility model also provides an intelligent door lock, comprising the rear panel assembly as described above.

[0025] During the assembly process of the rear panel assembly of the technical solution of the utility model, after the drive shaft is installed on the rear bottom plate, the drive shaft can be limited to the rear bottom plate by a fixed structure, so that the drive shaft can rotate circumferentially relative to the rear bottom plate and is limited axially. That is, the drive shaft and the rear panel can be connected into a whole by a fixed structure. In this way, the two can be installed on the door body at one time later, and the relative position relationship between the drive shaft and the rear bottom plate can always be guaranteed. Furthermore, when the rear panel is connected to the rear bottom plate, the relative position relationship between the drive shaft and the knob on the rear bottom plate can be guaranteed based on the relative position relationship of the rear bottom plate. In this way, during the assembly process, the drive shaft and the rear panel are installed on the door body at one time, and the alignment connection between the drive shaft and the knob is facilitated, thereby simplifying the assembly process of the rear panel and facilitating the assembly efficiency of the rear panel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 This is a schematic structural diagram of an embodiment of a rear panel assembly of the utility model;

[0028] Figure 2 for Figure 1 Another perspective diagram of the middle and rear panel components;

[0029] Figure 3 for Figure 1 Another perspective diagram of the middle and rear panel components;

[0030] Figure 4 for Figure 1 A one-view schematic diagram of the exploded structure of the rear base plate and rear panel of the mid-rear panel assembly;

[0031] Figure 5 for Figure 1 Another perspective schematic diagram of the exploded structure of the rear bottom plate and rear panel of the middle rear panel assembly;

[0032] Figure 6 for Figure 4 A partial structural diagram of the middle and rear panel assembly;

[0033] Figure 7 for Figure 6 Another perspective schematic diagram of the partial structure of the middle and rear panel assembly;

[0034] Figure 8 for Figure 6 An exploded structural diagram of a partial structure of a middle and rear panel assembly;

[0035] Fig. 9 for Figure 8 Another perspective schematic diagram of the exploded structure of the partial structure of the middle and rear panel assembly;

[0036] Fig.10 for Figure 8 Schematic diagram of the exploded structure of the rear bottom plate, drive shaft and transmission shaft in the middle and rear panel assembly;

[0037] Fig.11 for Fig.10 A schematic diagram of the assembly structure of the middle drive shaft and the transmission shaft from one perspective;

[0038] Fig.12 for Fig.11 A schematic diagram of the assembly structure of the middle drive shaft and the transmission shaft from another perspective;

[0039] Fig.13 for Figure 5 Schematic diagram of the exploded structure of the center-rear panel, knob, and extension shaft.

[0040] Description of Figure Numbers:

[0041] Label name Label name 100 Rear Panel Components 312 First pass hole 10 Rear bottom plate 313 Boss 11 Cushion 314 Side panels 12 Connecting column 315 Mounting slot 13 Second pass hole 33 Locking screw 14 Positioning hole 40 Rear Panel 15 Depression groove 41 Knobs 20 Drive shaft 43 Grip slot 21 First Gear 45 Storage tank 22 The first limiting ring 50 transmission shaft 23 Main axis 51 Second gear 24 Connection segment 53 Second limit ring 30 Fixed structure 55 Socket 31 Clamping parts 60 Extended Axis 311 Clamping plate 61 Connection hole

[0042] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] A smart door lock is a door lock that can be unlocked by fingerprint command, password command, voice command or face recognition. At present, a smart door lock usually includes a front panel assembly, a lock body and a rear panel assembly. Among them, the front panel assembly can be arranged on the outside of the door body, the rear panel assembly can be arranged on the inside of the door body, and the lock body is located between the front panel and the rear panel. In this way, when the user is outdoors, the front panel assembly can be used to control the lock tongue in the lock body to retract based on fingerprint command, password command, voice command or face recognition, thereby unlocking the lock body and opening the door body. When indoors, the rear panel assembly can be used to drive the lock tongue to retract, thereby unlocking the lock body and opening the door body.

[0048] Furthermore, the rear panel assembly usually includes a rear panel, a knob disposed on one side of the rear panel, a rear bottom plate covered on the other side of the rear panel, and a drive shaft disposed on the rear bottom plate, so that when the user drives the knob to rotate, the corresponding drive shaft can be driven to rotate to realize the opening and closing of the lock body of the smart door lock. However, the drive shaft and the rear bottom plate in the rear panel assembly of the current smart door lock are usually separately and independently arranged and respectively installed on the door body. At this time, in the process of the drive shaft and the rear bottom plate being respectively installed on the door body twice, it is difficult to ensure the relative position relationship between the drive shaft and the rear bottom plate, and then it is difficult to ensure the corresponding relationship between the drive shaft and the knob on the rear panel subsequently connected to the rear bottom plate, resulting in a relatively complicated assembly process of the rear panel assembly and easily affecting the assembly efficiency of the rear panel assembly.

[0049] Therefore, based on the above considerations, in order to solve the problem that the assembly of the rear panel assembly of the current smart door lock is relatively inconvenient, this application proposes a new type of rear panel assembly. The rear panel assembly innovatively connects the drive shaft and the rear bottom plate into a whole through a fixed structure to achieve a one-time installation of this part of the structure; at the same time, it ensures the relative position relationship between the drive shaft and the rear bottom plate, and then ensures the corresponding relationship between the subsequent drive shaft and the knob on the rear panel, so as to facilitate the connection of the rear panel to the rear bottom plate. This improves the convenience of installing the drive shaft and the rear bottom plate on the door body, as well as the convenience of connecting the rear panel to the rear bottom plate, which is conducive to improving the assembly efficiency of the rear panel assembly.

[0050] Next, the structure of the rear panel assembly proposed in this application is explained and illustrated by an embodiment. In one embodiment of this application, please refer to Figures 1 to 8 The rear panel assembly 100 proposed in the present application includes a rear bottom plate 10, a drive shaft 20, a fixing structure 30 and a rear panel 40. The drive shaft 20 is arranged on the rear bottom plate 10; the fixing structure 30 is used to limit the drive shaft 20 to the rear bottom plate 10, so that the drive shaft 20 is rotatable in the circumferential direction and is axially limited; the rear panel 40 is connected to the rear bottom plate 10, and a rotatable knob 41 is penetrated through the rear panel 40, and the knob 41 is used to drive the drive shaft 20 to rotate.

[0051] The rear bottom plate 10 can be used to connect with the door body. The rear bottom plate 10 and the door body can be fixed by screws, or by magnets. The present application does not limit the connection method of the rear bottom plate 10 on the door body. The shape of the rear bottom plate 10 can be rectangular, and its length can be in the up and down direction (the up and down direction defined by the state of being installed on the door body). Of course, the present application is not limited to this. In other embodiments, the shape of the rear bottom plate 10 can also be square or other shapes. Furthermore, in order to avoid pressure loss on the door body when the rear bottom plate 10 is installed on the door body, please refer to Figure 3A buffer pad 11 made of elastic material such as silicone or rubber may be provided between the rear bottom plate 10 and the door body.

[0052] The drive shaft 20 can be directly or indirectly connected to the knob 41 on the rear panel 40, and can also be directly or indirectly connected to the lock tongue on the lock body of the smart door lock. In this way, the drive shaft 20 can be driven to rotate by the knob 41, and drive the lock tongue on the lock body to perform telescopic movement, thereby realizing the locking and unlocking of the lock body.

[0053] The fixed structure 30 can be used to install and limit the drive shaft 20, so as to realize the connection and assembly of the drive shaft 20 and the rear bottom plate 10 to form a whole, and the drive shaft 20 is fixed in the axial direction and can still rotate in the circumferential direction. Among them, the limiting method of the fixed structure 30 on the drive shaft 20 can be as described below, including a clamping member 31 to clamp and install the drive shaft 20. Of course, the limiting method of the fixed structure 30 on the drive shaft 20 can also be a clamping installation. At this time, an annular groove can be provided on the circumference of the drive shaft 20, and a limiting rib can be provided on the rear bottom plate 10, and the limiting rib is embedded in the annular groove. Therefore, the present application does not limit the structural type of the fixed structure 30, and it is sufficient to realize the axial limiting and circumferentially rotatable limiting installation of the drive shaft 20.

[0054] The rear panel 40 can be used to connect with the rear bottom plate 10, and is provided with a knob 41 so that the user can drive the drive shaft 20 to rotate through the knob 41. In addition, in order to facilitate the user to open and close the door, a gripping groove 43 can also be provided on the rear panel 40. Among them, the gripping groove 43 can be extended in the up and down directions and pass through the left and right sides of the rear panel 40, so as to simplify the structure of the gripping groove 43 and improve the convenience of its processing while increasing the gripping space provided by the gripping groove 43 to enhance the user's experience. In addition, the projection of the rear panel 40 on the door body can be more compatible with the rear bottom plate 10 to improve the compatibility of the installation of the two. For example: when the shape of the rear bottom plate 10 is a rectangle, the projection of the rear panel 40 on the door body can also be a rectangle. In addition, in order to simplify the assembly between the rear panel 40 and the rear bottom plate 10. Please refer to Figure 4 , the rear bottom plate 10 may be provided with a connecting column 12, so that after the rear panel 40 and the rear bottom plate 10 are aligned, the rear panel 40 and the rear bottom plate 10 can be quickly connected by passing the screws through the rear panel 40 and inserting them into the corresponding connecting column 12. Of course, in other embodiments, the connection between the rear panel 40 and the rear bottom plate 10 can also be connected by magnetic fixation or snap connection, and the present application does not limit the connection method between the rear panel 40 and the rear bottom plate 10.

[0055] In the assembly process of the rear panel assembly 100 of the technical solution of the present application, after the drive shaft 20 is installed on the rear bottom plate 10, the drive shaft 20 can be limited to the rear bottom plate 10 by the fixing structure 30, so that the drive shaft 20 can be rotatable in the circumferential direction relative to the rear bottom plate 10 and is limited in the axial direction. That is, the drive shaft 20 and the rear panel 40 can be connected into a whole by the fixing structure 30. In this way, the two can be installed on the door body at one time in the future, and the relative position relationship between the drive shaft 20 and the rear bottom plate 10 can always be guaranteed. Furthermore, when the rear panel 40 is connected to the rear bottom plate 10, based on the relative position relationship of the rear bottom plate 10, the relative position relationship between the drive shaft 20 and the knob 41 on the rear bottom plate 10 can be guaranteed. In this way, the one-time installation of the drive shaft 20 and the rear panel 40 on the door body during the assembly process is realized, and the alignment connection between the drive shaft 20 and the knob 41 is facilitated, thereby simplifying the assembly process of the rear panel 40 and facilitating the assembly efficiency of the rear panel assembly 100.

[0056] Please refer to Figures 6 to 9 In one embodiment of the present application, the fixing structure 30 includes a clamping member 31 , which is connected to the rear bottom plate 10 and cooperates with the rear bottom plate 10 to clamp the limiting driving shaft 20 .

[0057] In this embodiment, the fixing structure 30 is configured to include a clamping member 31, and the drive shaft 20 is clamped and installed with the rear bottom plate 10. On the one hand, the installation method of the drive shaft 20 can be relatively simple, which is conducive to improving the convenience of its installation. On the other hand, it is also unnecessary to set a connecting structure on the drive shaft 20, which is conducive to protecting the structural strength of the drive shaft 20 itself. At the same time, it is also convenient to set a connecting structure on the clamping member 31 to connect it, which is conducive to improving the convenience of manufacturing the rear panel assembly 100. Among them, the clamping member 31 can be a box structure including a clamping plate 311 and a side panel 314 as described below, and of course it can also be a plate structure. The present application does not limit the structural type and shape of the clamping member 31. In addition, the connection between the clamping member 31 and the rear bottom plate 10 can be connected by a locking screw 33 as described below. Of course, it can also be connected by magnetic attraction or snap connection, etc., and the present application does not limit the connection direction between the clamping member 31 and the rear bottom plate 10.

[0058] Please refer to Figure 8 and Fig. 9In one embodiment of the present application, the clamping member 31 includes a clamping plate 311 and a side panel 314 connected to each other. The side panel 314 is arranged around the periphery of the clamping plate 311 and is combined with the clamping plate 311 to form a mounting groove 315; the clamping member 31 is covered on the drive shaft 20 through the mounting groove 315, and the clamping plate 311 is provided with a first clearance hole 312 at a position corresponding to the drive shaft 20, and the drive shaft 20 is connected to one end of the knob 41 and / or the knob 41 is connected to one end of the drive shaft 20 through the first clearance hole 312.

[0059] In this embodiment, the clamping member 31 is configured to include a clamping plate 311 and a side panel 314, so that the distance between the clamping plate 311 and the rear bottom plate 10 can be ensured by the abutment limit between the side panel 314 and the rear bottom plate 10, thereby avoiding the clamping plate 311 from exerting a pressing force on the drive shaft 20, so that the drive shaft 20 can smoothly rotate. At the same time, the clamping plate 311 and the side panel 314 can also be enclosed to form a mounting groove 315, so that the mounting groove 315 can be used to isolate and protect the drive shaft 20. Among them, one end of the drive shaft 20 connected to the knob 41 passes through the first pass hole 312. Of course, it can also be that one end of the knob 41 connected to the drive shaft 20 passes through the first pass hole 312 and extends into the mounting groove 315. Alternatively, one end of the drive shaft 20 connected to the knob 41 and one end of the knob 41 connected to the drive shaft 20 are both located in the first pass hole 312.

[0060] Please refer to Figures 8 to 11 In one embodiment of the present application, the driving shaft 20 located in the installation groove 315 is sleeved with a first gear 21, and the rear panel assembly 100 also includes a transmission shaft 50, which is rotatably disposed in the installation groove 315 and is arranged side by side with the transmission shaft 50, and the transmission shaft 50 is sleeved with a second gear 51, and the second gear 51 is engaged with the first gear 21; the rear bottom plate 10 is provided with a second let-in hole 13 at a position corresponding to the transmission shaft 50, and the transmission shaft 50 passes through the second let-in hole 13.

[0061] In this embodiment, the first gear 21, the transmission shaft 50 and the second gear 51 are arranged so that when the drive shaft 20 is driven to rotate by the knob 41, the first gear 21 can be driven to rotate accordingly. The first gear 21 can drive the second gear 51 meshing therewith to rotate, thereby realizing the rotation of the transmission shaft 50, so as to drive the lock tongue on the lock body of the smart door lock to perform telescopic movement through the transmission shaft 50. At this time, the arrangement of the transmission shaft 50 spaced side by side with the drive shaft 20 can increase the volume of the smart door lock through the interval, thereby facilitating the improvement of the visual effect and the convenience of use. In particular, at this time, the gripping groove 43 introduced above can be arranged relatively large, so as to facilitate the use of the user. In addition, the transmission ratio can also be adjusted by the first gear 21 and the second gear 51, so as to improve the convenience of the user to drive the lock tongue on the lock body of the smart door lock to perform telescopic movement through the knob 41.

[0062] Please refer to Fig.11 and Fig.12 In one embodiment of the present application, the driving shaft 20 located in the installation groove 315 is sleeved with a first limiting ring 22, the first gear 21 is sleeved on the first limiting ring, and the clamping plate 311 and the rear bottom plate 10 are respectively clamped on opposite sides of the first limiting ring 22.

[0063] In this embodiment, the first limiting ring 22 is limited by contacting the clamping plate 311 and the rear bottom plate 10 at opposite sides, so that the contact area with the clamping plate 311 and the rear bottom plate 10 is relatively small, which is conducive to further improving the smoothness of the rotation of the drive shaft 20 and the first gear 21. Similarly, in order to improve the smoothness of the rotation of the transmission shaft 50 and the second gear 51, in one embodiment of the present application, the transmission shaft 50 sleeve located in the installation groove 315 can be provided with a second limiting ring 53, the second gear 51 is sleeved in the second limiting position, and the clamping plate 311 and the rear bottom plate 10 can be clamped on opposite sides of the second limiting ring 53 respectively.

[0064] Please refer to Fig.11 and Fig.12 In one embodiment of the present application, in the axial direction of the drive shaft 20, the drive shaft 20 includes a main shaft 23 and a connecting section 24 connected in sequence, at least a portion of the connecting section 24 is located on the outside of the mounting groove 315, the cross-section of the connecting section 24 is non-circular, and the connecting section 24 is connected to the knob 41.

[0065] In this embodiment, the drive shaft 20 includes a main shaft 23 and a connecting section 24 connected in sequence, and the cross section of the connecting section 24 is non-circular, so that the main shaft 23 can be rotatably installed on the rear base plate 10, and the connecting section 24 can be directly plugged and connected to further improve the convenience of assembly between the several. Among them, the cross section of the connecting section 24 can be square, rectangular or other non-circular shapes. At this time, the knob 41 or the extension shaft 60 described below can be provided with a non-circular connecting hole 61 for the fitting insertion of the connecting section 24, so that the drive shaft 20 can be driven to rotate when rotating. In addition, the first limit ring 22 described above can be sleeved on the main shaft 23. In addition, the connecting section 24 can pass through the first pass hole 312 described above.

[0066] Please refer to Figures 8 to 10 ,as well as Fig.12 In one embodiment of the present application, the rear bottom plate 10 is provided with a positioning hole 14 , and the end of the driving shaft 20 away from the knob 41 can be inserted into the positioning hole 14 .

[0067] In this embodiment, the positioning hole 14 can be provided to position and accommodate the installation of the drive shaft 20, thereby further improving the convenience and stability of the installation of the drive shaft 20. The main shaft 23 described above can be inserted into the positioning hole 14.

[0068] Please refer to Fig.12 In one embodiment of the present application, the transmission shaft 50 is provided with an insertion hole 55, and the insertion hole 55 is extended along the axial direction of the transmission shaft 50 and is non-circular.

[0069] In this embodiment, the plug hole 55 is provided so that it can be directly or indirectly plugged and connected with the lock tongue on the lock body of the smart door lock. That is, part of the lock tongue or the part of the lock rod in the lock body that drives the lock tongue to telescopic movement can be plugged into the plug hole 55 of the transmission shaft 50, thereby facilitating the connection between the transmission shaft 50 and the lock tongue in the lock body. The plug hole 55 can be square, rectangular or other non-circular shapes.

[0070] In an embodiment of the present application, the first gear 21 and the second gear 51 are both made of zinc alloy.

[0071] In this embodiment, the material of the first gear 21 and the second gear 51 is set to be a zinc alloy material, which can increase the weight of the rear panel assembly 100 to play a counterweight role and help enhance the user feel, thereby further improving the user experience.

[0072] Please refer to Figures 7 to 9In one embodiment of the present application, the fixing structure 30 further includes a locking screw 33 , and the locking screw 33 is used to connect the rear base plate 10 and the clamping member 31 .

[0073] In this embodiment, the rear bottom plate 10 and the clamping member 31 are connected by the locking screw 33, so that the connection between the clamping member 31 and the rear bottom plate 10 is relatively simple, which is conducive to further improving the assembly efficiency. In order to facilitate the insertion of the locking screw 33, a protrusion 313 can be provided on the clamping plate 311 of the clamping member 31, and the locking screw 33 can be inserted into the protrusion 313 after passing through the rear bottom plate 10.

[0074] Please refer to Figure 7 In one embodiment of the present application, a recessed groove 15 is provided on a side of the rear bottom plate 10 away from the clamping member 31 , and a locking screw 33 is disposed in the recessed groove 15 .

[0075] In this embodiment, the recessed groove 15 can provide a space for the locking screw 33, and after the rear bottom plate 10 and the drive shaft 20 are assembled and installed on the door body, the locking screw 33 can be prevented from interfering with the door body, so as to improve the stability of the fit between the rear bottom plate 10 and the door body. The recessed groove 15 can correspond to the setting of the clamping member 31.

[0076] Please refer to Figure 5 In one embodiment of the present application, the rear panel 40 is provided with a receiving groove 45 , the rear bottom plate 10 covers the notch of the receiving groove 45 , and the driving shaft 20 and the clamping member 31 are disposed in the receiving groove 45 .

[0077] In this embodiment, by providing the accommodating groove 45, the drive shaft 20 and the clamping member 31 can be provided with space to be hidden. This can not only improve the isolation and protection effect of the drive shaft 20 and the clamping member 31 and other partial structures, but also improve the appearance of the rear panel assembly 100 and improve the competitiveness of subsequent smart door locks in the market.

[0078] Please refer to Figure 5 and Fig.13 In one embodiment of the present application, the knob 41 is rotatably disposed on a side of the rear panel 40 away from the rear bottom plate 10, and the rear panel assembly 100 also includes an extension shaft 60, one end of the extension shaft 60 is connected to the knob 41, and the other end extends through the rear panel 40 into the accommodating groove 45 and is connected to the driving shaft 20.

[0079] In this embodiment, the knob 41 is arranged on the side of the rear panel 40 away from the rear bottom plate 10, so that it can be preferably oriented toward the user, thereby facilitating the user to rotate it. The arrangement of the extension shaft 60 allows the knob 41 to transmit motion to the drive shaft 20 through the extension shaft 60 without being arranged relatively large, thereby facilitating the convenience of arranging the knob 41 on the rear panel 40. The connection between the extension shaft 60 and the knob 41 may be by screw connection, magnetic connection, snap connection, etc., and the present application does not limit the connection method between the extension shaft 60 and the knob 41.

[0080] The present application also proposes a smart door lock, which includes a rear panel assembly 100. The specific structure of the rear panel assembly 100 refers to the above embodiment. Since the smart door lock adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the smart door lock also includes a front panel assembly and a lock body. The front panel assembly can be arranged on the outside of the door body, and the rear panel assembly 100 is arranged on the inside of the door body. The lock body is located between the front panel and the rear panel 40. Both the front panel assembly and the rear panel assembly 100 can drive the lock tongue in the lock body to perform telescopic movement to realize the opening and closing of the door body.

[0081] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A rear panel assembly, applied to a smart door lock, characterized in that: The rear panel assembly comprises: rear bottom plate; A drive shaft, the drive shaft being arranged on the rear bottom plate; A fixing structure, the fixing structure is arranged on the rear bottom plate and abuts against the drive shaft to limit the drive shaft to the rear bottom plate and limit the circumferential rotation of the drive shaft to the axial position; and A rear panel, the rear panel is connected to the rear bottom plate, the rear panel is provided with a rotatable knob, and the knob is used to drive the driving shaft to rotate; The fixing structure comprises a clamping member, which is connected to the rear bottom plate and cooperates with the rear bottom plate to clamp and limit the driving shaft.

2. The rear panel assembly according to claim 1, wherein: The clamping member comprises a clamping plate and a side panel connected to each other, wherein the side panel is disposed around the periphery of the clamping plate and is combined with the clamping plate to form a mounting groove; The clamping member is arranged on the driving shaft through the mounting groove cover, and the clamping plate is provided with a first clearance hole at a position corresponding to the driving shaft, and the driving shaft is connected to one end of the knob and / or the knob is connected to one end of the driving shaft through the first clearance hole.

3. The rear panel assembly according to claim 2, wherein: The drive shaft sleeve located in the installation groove is provided with a first gear, the rear panel assembly further includes a transmission shaft, the transmission shaft is rotatably arranged in the installation groove and arranged side by side with the transmission shaft, the transmission shaft sleeve is provided with a second gear, and the second gear is meshed with the first gear; The rear bottom plate is provided with a second clearance hole at a position corresponding to the transmission shaft, and the transmission shaft passes through the second clearance hole.

4. The rear panel assembly according to claim 3, wherein: The driving shaft sleeve located in the mounting groove is provided with a first limiting ring, the first gear sleeve is arranged at the first limiting position, and the clamping plate and the rear bottom plate are respectively clamped at opposite sides of the first limiting ring; And / or, the transmission shaft sleeve located in the installation groove is provided with a second limiting ring, the second gear sleeve is arranged at the second limiting ring, and the clamping plate and the rear bottom plate are respectively clamped at opposite sides of the second limiting ring; And / or, in the axial direction of the drive shaft, the drive shaft comprises a main shaft and a connecting section which are connected in sequence, at least a part of the connecting section is located outside the mounting groove, the cross section of the connecting section is non-circular, and the connecting section is connected to the knob; And / or, the rear bottom plate is provided with a positioning hole, and an end of the driving shaft away from the knob can be inserted into the positioning hole; And / or, the transmission shaft is provided with a plug hole, the plug hole is extended along the axial direction of the transmission shaft and is arranged in a non-circular shape; And / or, the first gear and the second gear are both made of zinc alloy.

5. The rear panel assembly according to any one of claims 1 to 4, characterized in that: The fixing structure further comprises a locking screw, and the locking screw is used to connect the rear bottom plate and the clamping member.

6. The rear panel assembly according to claim 5, wherein: A concave groove is provided on one side of the rear bottom plate away from the clamping member, and the locking screw is arranged in the concave groove.

7. The rear panel assembly according to any one of claims 1 to 4, characterized in that: The rear panel is provided with a receiving groove, the rear bottom plate covers the notch of the receiving groove, and the driving shaft and the clamping member are arranged in the receiving groove.

8. The rear panel assembly according to claim 7, wherein: The knob is rotatably arranged on a side of the rear panel away from the rear bottom plate. The rear panel assembly also includes an extension shaft, one end of which is connected to the knob, and the other end of which passes through the rear panel and extends into the accommodating groove and is connected to the driving shaft.

9. A smart door lock, characterized in that: Comprising a rear panel assembly as claimed in any one of claims 1 to 8.

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