Refrigerator door shelf assembly and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, and provides a refrigerator door shelf assembly and a refrigerator, the refrigerator door shelf assembly comprises a back plate, a shelf and a driving mechanism, the back plate is used for being arranged on a door liner of a refrigerator door body, and a rack extending in the height direction of the door liner is arranged on the side, back on to the door liner, of the back plate; the shelf is slidably connected to the side, back to the door liner, of the back plate. The driving mechanism comprises a motor and a transmission part which are arranged on the side, close to the back plate, of the shelf, an output shaft of the motor is connected with the transmission part, the transmission part is provided with transmission teeth meshed with the rack, and the motor is used for driving the transmission part to rotate so that the shelf can ascend and descend in the height direction relative to the back plate. The height position of the shelf can be adjusted, so that a user can take and place articles conveniently, and the use experience of the user is improved.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and in particular to a refrigerator door shelf assembly and a refrigerator. Background Technology

[0002] Currently, refrigerators have multiple shelves arranged at intervals on the inner side of the door for storing items. However, the existing shelves are fixed and cannot be adjusted in height, making it inconvenient for users to take items out and put them in, resulting in a poor user experience. Utility Model Content

[0003] The purpose of this application is to provide a refrigerator door shelf assembly and a refrigerator, aiming to solve the problem that the existing refrigerator shelves cannot be adjusted in height, resulting in a poor user experience.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, some embodiments of this application provide a refrigerator door shelf assembly, including:

[0006] A back panel is provided on the door liner of the refrigerator door, and the back panel has a toothed strip extending along the height direction of the door liner on the side facing away from the door liner.

[0007] A shelf is slidably connected to the back panel on the side facing away from the door frame;

[0008] The drive mechanism includes a motor and a transmission component located on the side of the shelf adjacent to the back plate. The output shaft of the motor is connected to the transmission component, and the transmission component has transmission teeth that mesh with the rack. The motor is used to drive the transmission component to rotate, so that the shelf moves up and down relative to the back plate in the height direction.

[0009] The refrigerator door shelf assembly provided in this application embodiment can drive the transmission component to rotate via a motor. Because the transmission teeth on the transmission component mesh with the rack on the back plate, this rotational motion is converted into linear motion, meaning the shelf rises or falls along the height of the door liner. This achieves adjustable shelf height, facilitating user access to items and improving the user experience. Furthermore, this application's shelf eliminates the traditional side-mounted lug structure, replacing it with a back-side sliding structure, resulting in a simpler, more compact design that also enhances aesthetics.

[0010] In some embodiments, the back plate is provided with a first guide structure on both sides of the rack along its length, and the shelf is provided with a second guide structure on the side adjacent to the back plate that slides in cooperation with the first guide structure.

[0011] In some embodiments, one end of the rack is provided with a first limiting structure, the other end of the rack is provided with a second limiting structure, and the transmission member is limited between the first limiting structure and the second limiting structure.

[0012] In some embodiments, one of the first limiting structure and the second limiting structure is a limiting boss, and the other is a limiting plate;

[0013] Furthermore, the limiting boss and the back plate are integrally formed, and the limiting plate is used for detachable connection to the door frame.

[0014] In some embodiments, one side of the back plate is provided with a clearance notch adapted to the limiting plate, and the limiting plate is disposed in the clearance notch and flush with the side edge of the back plate.

[0015] In some embodiments, the shelf has a recessed receiving groove on the side adjacent to the back plate, which is recessed away from the rack, and the shelf has a first bearing seat and a second bearing seat arranged at intervals along the height direction on the side adjacent to the back plate, the first bearing seat and the second bearing seat being disposed in the receiving groove.

[0016] The transmission component is a worm gear, one end of which is rotatably connected to the first bearing housing, and the other end of which is rotatably connected to the second bearing housing. The motor is located in the receiving groove, and the output shaft of the motor is connected to one end of the worm gear through a coupling.

[0017] In some embodiments, the top of the receiving slot is provided with a slot, the motor is disposed adjacent to the slot, and the motor is provided with a cover plate, the cover plate being detachably connected to the shelf and covering the slot;

[0018] And / or, at least one of the first bearing housing and the second bearing housing is detachably connected to the shelf.

[0019] In some embodiments, the motor is a stepper motor, the transmission component is a gear, and the output shaft of the stepper motor is connected to the gear.

[0020] In some embodiments, the drive mechanism further includes:

[0021] A control button is provided on the opposite side wall of the hinge side of the refrigerator door and is electrically connected to the motor. The control button is used to control the operating status of the motor.

[0022] Secondly, some embodiments of this application also provide a refrigerator, including: a door body and a refrigerator door shelf assembly as described above, wherein the refrigerator door shelf assembly is disposed on the door body.

[0023] The refrigerator provided in this application embodiment, through the refrigerator door shelf assembly of the above embodiment, can facilitate users to put and take out items, improve the user experience, and help improve the aesthetics. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 An assembly diagram of the refrigerator door shelf assembly provided in an embodiment of this application;

[0026] Figure 2 An exploded view of the refrigerator door shelf assembly provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of the backplate provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the assembly of the back plate and the limiting plate provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the shelf provided in an embodiment of this application;

[0030] Figure 6 This is an assembly diagram of the drive mechanism provided in an embodiment of this application.

[0031] The following are the labeling elements in the figure:

[0032] 1. Back panel; 2. Shelf; 3. Door body; 301. Hinged side; 4. Door insert; 5. Rack; 6. Motor;

[0033] 7. Transmission component; 8. Transmission gear; 9. First guide structure; 10. Second guide structure;

[0034] 11. Limiting boss; 12. Limiting plate; 13. Clearance notch; 14. Receiving groove;

[0035] 15. First bearing housing; 16. Second bearing housing; 17. Bearing; 18. Groove; 19. Cover plate;

[0036] 20. Up button; 21. Down button. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0038] In the description of the embodiments of this application, it should be understood that the terms "height", "length", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0041] Currently, refrigerators have multiple shelves arranged at intervals on the inner side of the door for storing items. However, the existing shelves are fixed and cannot be adjusted in height, making it inconvenient for users to take items out and put them in, resulting in a poor user experience.

[0042] To address the aforementioned technical issues, the refrigerator door shelf assembly provided in this application incorporates an electromechanical integrated design to achieve adjustable shelf height, thereby improving the user experience.

[0043] In some embodiments, refer to Figures 1 to 6As shown, the refrigerator door shelf assembly provided in this application includes: a back plate 1, a shelf 2, and a drive mechanism. The back plate 1 is mounted on the door insert 4 of the refrigerator door body 3, and a rack 5 extending along the height direction X of the door insert 4 is provided on the side of the back plate 1 facing away from the door insert 4. The shelf 2 is slidably connected to the side of the back plate 1 facing away from the door insert 4. The drive mechanism includes a motor 6 and a transmission component 7 located on the side of the shelf 2 adjacent to the back plate 1. The output shaft of the motor 6 is connected to the transmission component 7, and the transmission component 7 has transmission teeth 8 that mesh with the rack 5. The motor 6 drives the transmission component 7 to rotate, causing the shelf 2 to move up and down relative to the back plate 1 along the height direction X.

[0044] Specifically, the back panel 1 can be installed on the inside of the door liner 4 of the refrigerator door body 3 via a hook, or the back panel 1 can be integrally thermoformed with the door liner 4. The side of the back panel 1 facing the inside of the refrigerator is provided with a rack 5 extending along the height direction X. It can be understood that the rack 5 is provided with a tooth structure that cooperates with the transmission teeth 8 of the transmission component 7.

[0045] Shelf 2 is the component that users directly use to place items. It is designed to slide relative to the back panel 1 along the height direction X, meaning that shelf 2 can move up and down within a certain range. The motor 6 and transmission component 7 of the drive mechanism are located on the back side of shelf 2 adjacent to the back panel 1, that is, installed between the back panel 1 and shelf 2. They are concealed by shelf 2, which helps to improve the overall aesthetics.

[0046] When the position of shelf 2 needs to be adjusted, the user can control the operation of motor 6 via mobile phone, tablet, control button, or other devices, including starting or stopping motor 6 and the direction of rotation of motor 6. For example, starting motor 6 by controlling the control button and making it rotate clockwise will drive transmission component 7 to rotate synchronously. Since the transmission teeth 8 on transmission component 7 mesh with the rack 5 on back plate 1, this rotational motion will be converted into linear motion, allowing shelf 2 to rise along the height direction X of door frame 4. Conversely, when motor 6 rotates counterclockwise, shelf 2 will descend along the height direction X of door frame 4.

[0047] Therefore, the refrigerator door shelf assembly provided in this application embodiment can flexibly adjust the height of the shelf 2 according to items of different sizes and shapes, making it convenient to put in and take out items and increasing the convenience and flexibility of use. In addition, the shelf 2 of this application eliminates the traditional side-mounted lug structure and adopts a back-side sliding structure, which not only simplifies the structure and reduces the number of parts, but also hides the drive mechanism, thereby improving the overall aesthetics.

[0048] In some embodiments, refer to Figures 3 to 6 As shown, the back plate 1 has a first guide structure 9 on both sides of the rack 5 along the length direction Y, and the shelf 2 has a second guide structure 10 that slides with the first guide structure 9 on the side adjacent to the back plate 1.

[0049] Specifically, the first guide structure 9 is disposed on the left and right sides of the back plate 1 along the length direction Y, and the rack 5 is disposed between the two first guide structures 9. The first guide structures 9 can ensure that the shelf 2 does not shift laterally when moving up and down, and limit its left and right movement. The first guide structure 9 can be a slide rail, a slide groove or other form of guide structure, which provides a stable track for the second guide structure 10.

[0050] The back side of the shelf 2 is also provided with a second guide structure 10 that cooperates with the first guide structure 9. The second guide structure 10 can be in the form of a slider, a slider, etc., depending on the design of the first guide structure 9, to achieve sliding cooperation.

[0051] When the motor 6 drives the shelf 2 to move, the second guide structure 10 slides along the first guide structure 9, thereby ensuring the linear movement of the shelf 2 and being able to withstand a certain lateral force to prevent the shelf 2 from tilting or getting stuck.

[0052] Therefore, through the close cooperation between the first guide structure 9 and the second guide structure 10, the shelf 2 can achieve better straightness and stability when adjusting its height, reducing shaking and helping to maintain the accuracy of the shelf 2 in its height position. This allows users to adjust the height of the shelf 2 more precisely to accommodate storage items of different sizes.

[0053] In some embodiments, refer to Figure 4 As shown, one end of the rack 5 is provided with a first limiting structure, and the other end of the rack 5 is provided with a second limiting structure. The transmission component 7 is limited between the first limiting structure and the second limiting structure.

[0054] Specifically, the first limiting structure and the second limiting structure are located at the upper and lower ends of the rack 5, respectively. They together limit the range of motion of the transmission component 7, that is, limit the lifting stroke of the shelf 2.

[0055] Understandably, by setting limiting structures at both ends of the rack 5, even if the motor 6 fails unexpectedly or the user misoperates, the transmission component 7 will not detach from the rack 5, thus ensuring the safety of the shelf 2 and preventing it from accidentally falling off the back panel 1.

[0056] Therefore, the first limiting structure and the second limiting structure in this application embodiment can improve the stability, reliability and safety of the shelf 2.

[0057] In some embodiments, refer to Figures 1 to 4 As shown, one of the first limiting structure and the second limiting structure is a limiting boss 11, and the other is a limiting plate 12; the limiting boss 11 and the back plate 1 are integrally formed, and the limiting plate 12 is used to be detachably connected to the door shell 4.

[0058] Specifically, the rack 5, the limiting boss 11, and the back plate 1 are manufactured using an integrated molding process, which not only enhances the overall strength of the structure but also reduces assembly steps and simplifies the production process. The limiting plate 12 can be installed on the door liner 4 using fasteners such as clips or screws. This design allows for easy disassembly when needed to facilitate the installation of the refrigerator door shelf assembly.

[0059] For example, such as Figures 1 to 6 As shown, the first guide structure 9 on the back plate 1 is a slide groove, the second guide structure 10 on the shelf 2 is a slide bar, the upper end of the rack 5 is provided with a limiting boss 11, and the lower end of the rack 5 is provided with a detachable limiting plate 12.

[0060] During installation, first install the back panel 1 onto the refrigerator door liner 4. Then, push the slide bar on the shelf 2 from bottom to top into the slide groove on the back panel 1 until the transmission gear 8 of the transmission component 7 correctly meshes with the rack 5. At this point, the shelf 2 is initially fixed to the back panel 1. Next, fix the limiting plate 12 to the door liner 4 with screws. At this point, the upper end of the rack 5 has an integrally formed limiting boss 11, and the lower end of the rack 5 has a limiting plate 12, thus completing the installation and limiting the vertical movement of the shelf 2.

[0061] Therefore, in this embodiment, only one limiting structure (limiting plate 12) needs to be disassembled or installed, making the assembly and disassembly process of the entire refrigerator door shelf assembly simpler and faster, and effectively improving assembly efficiency.

[0062] In some embodiments, refer to Figure 3 and Figure 4 As shown, a clearance notch 13 adapted to the limiting plate 12 is provided on one side of the back plate 1. The limiting plate 12 is located in the clearance notch 13 and is flush with the side edge of the back plate 1.

[0063] Specifically, the back plate 1 has a clearance notch 13 on one side that matches the shape and size of the limiting plate 12. The clearance notch 13 is located at one end of the rack 5, which ensures that the limiting plate 12 can be accurately embedded and fixed at one end of the rack 5, thereby effectively limiting the movement range of the transmission component 7.

[0064] Furthermore, the presence of the clearance notch 13 allows the limiting plate 12 to fit tightly against the side edge of the back plate 1, avoiding additional space occupation, making the entire component more compact, and improving neatness and aesthetics.

[0065] In addition, the clearance notch 13 provides clear installation guidance for the limit plate 12, reducing adjustment steps during assembly and improving assembly efficiency.

[0066] In some embodiments, refer to Figure 5 and Figure 6As shown, a receiving groove 14 is formed on the side of the shelf 2 adjacent to the back plate 1, which is recessed in the direction away from the rack 5, and a first bearing seat 15 and a second bearing seat 16 are provided on the side of the shelf 2 adjacent to the back plate 1 at intervals along the height direction X. The first bearing seat 15 and the second bearing seat 16 are provided in the receiving groove 14.

[0067] The transmission component 7 is a worm gear. One end of the worm gear is rotatably connected to the first bearing housing 15, and the other end of the worm gear is rotatably connected to the second bearing housing 16. The motor 6 is located in the receiving groove 14, and the output shaft of the motor 6 is connected to one end of the worm gear through a coupling (not shown in the figure).

[0068] Specifically, a receiving groove 14 is formed on the back side of shelf 2 to centrally accommodate motor 6, worm gear, and other related components. This concealed design avoids exposing the drive mechanism, reduces visual clutter, and enhances the overall aesthetics of the refrigerator's interior. Furthermore, the receiving groove 14 provides a degree of physical protection for the internal components, preventing accidental contact with these parts by external objects or users, thereby improving safety.

[0069] The first bearing housing 15 and the second bearing housing 16 are arranged vertically at intervals within the receiving groove 14, and each bearing housing contains a bearing 17 to support both ends of the worm gear and ensure its smooth rotation. By rationally designing the position of the bearing housings, the entire drive mechanism achieves a compact layout, saving space and facilitating maintenance and repair.

[0070] The worm gear, acting as a transmission component 7, has one end connected to the output shaft of the motor 6 via a coupling and engages with the rack 5 for transmission. It should be noted that the worm gear transmission has a certain self-locking characteristic; that is, when the worm stops rotating, it will not rotate in the opposite direction. This characteristic allows the shelf 2 to remain stable after reaching the designated height position.

[0071] When the height of shelf 2 needs to be adjusted, motor 6 is started and drives the worm gear to rotate via the coupling. The transmission teeth 8 on the worm gear mesh with the rack 5, causing shelf 2 to move up and down along the back plate 1. When shelf 2 reaches the desired position, motor 6 stops working. Through the self-locking effect of the worm gear, shelf 2 is ensured to remain stably in that position, reducing the risk of accidental slippage and improving safety during use.

[0072] Therefore, the embodiments of this application achieve efficient integration of the drive mechanism, improving the overall performance of the product and the user experience.

[0073] In some embodiments, refer to Figure 2 , Figure 5 and Figure 6 As shown, at least two worm gears are arranged side by side, and each worm gear is equipped with a matching motor 6, a first bearing housing 15, a second bearing housing 16, and a bearing 17.

[0074] In this embodiment, multiple worm gears simultaneously engage with the rack 5 for transmission, which can effectively improve the movement stability of the shelf 2.

[0075] In some embodiments, refer to Figure 5 and Figure 6 As shown, the top of the receiving groove 14 is provided with a groove 18, the motor 6 is provided near the groove 18, and the motor 6 is provided with a cover plate 19. The cover plate 19 is detachably connected to the shelf 2 and covers the groove 18.

[0076] Specifically, the slot 18 at the top of the receiving slot 14 allows the motor 6 to be easily installed or removed from above, simplifying the assembly process and facilitating later inspection and maintenance.

[0077] The cover plate 19 on the motor 6 is fixed to the shelf 2 via a detachable connection (such as screws, clips, etc.) to ensure the stability and reliability of the motor 6 within the receiving slot 14. Furthermore, the cover plate 19 covers the slot opening 18, protecting the internal drive mechanism and extending its service life, while preventing accidental contact with internal components, thus improving safety. In addition, the design of the cover plate 19 makes the entire assembly look cleaner, avoiding exposed components and enhancing the overall aesthetics of the refrigerator's interior.

[0078] In some embodiments, refer to Figure 5 and Figure 6 As shown, at least one of the first bearing housing 15 and the second bearing housing 16 is detachably connected to the shelf 2.

[0079] Specifically, when one bearing housing is detachably connected to the shelf 2, and the other bearing housing is integrally formed with the shelf 2, for example, the first bearing housing 15 at the top of the receiving groove 14 is detachably connected to the shelf 2 (e.g., using screws or clips), and the second bearing housing 16 at the bottom of the receiving groove 14 is integrally formed with the shelf 2, during installation, first connect one end of the worm gear to the second bearing housing 16, and then connect the first bearing housing 15 to the other end of the worm gear and fix it in the receiving groove 14 of the shelf 2 with screws.

[0080] When both bearing housings and shelf 2 are detachably connected, the worm gear can be connected to the two bearing housings first, and then the two bearing housings can be fixedly installed in the receiving groove of shelf 2.

[0081] Therefore, the detachable bearing housing in this embodiment can effectively improve the ease of worm gear installation.

[0082] In some embodiments, motor 6 is a stepper motor, transmission component 7 is a gear, and the output shaft of the stepper motor is connected to the gear.

[0083] Specifically, a stepper motor is an actuator that converts electrical pulse signals into angular or linear displacement, providing precise position control. Furthermore, a stepper motor has a holding torque, allowing it to maintain its current position even in the event of a power outage, thus enabling the shelf 2 to remain stably at a specified height.

[0084] When the height of shelf 2 needs to be adjusted, the stepper motor is activated. It rotates a certain angle according to a preset number of pulses, driving the gear to move along rack 5, thereby raising or lowering shelf 2. It can be understood that since the stepper motor rotates a fixed angle (step angle) for each pulse signal received, the height of shelf 2 can be precisely positioned by controlling the number of pulses. Once the target position is reached, the stepper motor stops working, and its holding torque keeps shelf 2 stationary in that position.

[0085] In addition, a small electromagnetic brake can be installed to work with the stepper motor. When the stepper motor is powered off, the brake will automatically activate and lock the output shaft of the stepper motor to prevent it from rotating and prevent it from sliding down when heavy items are placed on shelf 2, thus further improving safety.

[0086] Therefore, the embodiments of this application, through the self-locking characteristics of the stepper motor and the tight cooperation between the gear and the rack, jointly ensure the stability of the shelf 2 in any position, reduce the risk of accidental sliding, and improve the safety of use.

[0087] In some embodiments, refer to Figure 1 and Figure 2 As shown, the drive mechanism also includes a control button, which is located on the opposite side wall of the hinge side 301 of the refrigerator door 3 and is electrically connected to the motor 6. The control button is used to control the operating status of the motor 6.

[0088] Specifically, the hinge side 301 of the refrigerator door 3 is the side that hinges to the refrigerator body to facilitate the opening and closing of the door 3. The control button is located on the outer wall of the refrigerator door 3 opposite to the hinge side 301. This position allows users to directly touch and control the door when opening it, making it convenient to use. Furthermore, the control button can transmit signals to the motor 6 via wireless communication technology, eliminating the visual clutter and installation complexity caused by traditional wires, thereby improving the simplicity and aesthetics of the refrigerator's interior.

[0089] The operating status of motor 6 can be controlled by the control buttons, including starting or stopping motor 6 and rotating direction of motor 6, thereby realizing the lifting and lowering of shelf 2.

[0090] For example, the control buttons may include an up button 20 and a down button 21. The user can select to press either the up button 20 or the down button 21 to control the movement direction of the shelf 2. The control buttons transmit the user's commands to the motor 6 controller via wireless communication. When the user presses the up button 20, the motor 6 starts and rotates clockwise, driving the worm gear to raise the shelf 2; when the user presses the down button 21, the motor 6 starts and rotates counterclockwise, driving the worm gear to lower the shelf 2; when the user does not press any buttons, the motor 6 stops running, and the shelf 2 remains at its current height.

[0091] Therefore, this embodiment of the application realizes the button lifting effect of the shelf 2, allowing users to easily adjust the height of the shelf 2, thus improving the convenience and efficiency of use.

[0092] In some embodiments, refer to Figure 1 As shown, this application also provides a refrigerator, including: a door body 3 and a refrigerator door shelf assembly as described in the above embodiment, the refrigerator door shelf assembly being disposed on the door body 3.

[0093] Since the refrigerator provided in this application includes the refrigerator door shelf assembly of the above embodiments, it has all the technical effects of the refrigerator door shelf assembly of the above embodiments, which will not be elaborated here.

[0094] The above are merely preferred embodiments of this application and are not intended to limit the embodiments of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A refrigerator door shelf assembly, characterized in that, include: A back panel is provided on the door liner of the refrigerator door, and the back panel has a toothed strip extending along the height direction of the door liner on the side facing away from the door liner. A shelf is slidably connected to the back panel on the side facing away from the door frame; The drive mechanism includes a motor and a transmission component located on the side of the shelf adjacent to the back plate. The output shaft of the motor is connected to the transmission component, and the transmission component has transmission teeth that mesh with the rack. The motor is used to drive the transmission component to rotate, so that the shelf moves up and down relative to the back plate in the height direction.

2. The refrigerator door shelf assembly according to claim 1, characterized in that, The back plate is provided with a first guide structure on both sides of the rack along its length, and the shelf is provided with a second guide structure that slides in cooperation with the first guide structure on the side adjacent to the back plate.

3. The refrigerator door shelf assembly according to claim 1, characterized in that, One end of the rack is provided with a first limiting structure, and the other end of the rack is provided with a second limiting structure. The transmission component is limited between the first limiting structure and the second limiting structure.

4. The refrigerator door shelf assembly according to claim 3, characterized in that, One of the first limiting structure and the second limiting structure is a limiting boss, and the other is a limiting plate; Furthermore, the limiting boss and the back plate are integrally formed, and the limiting plate is used to be detachably connected to the door frame.

5. The refrigerator door shelf assembly according to claim 4, characterized in that, The back plate has a clearance notch on one side that is adapted to the limiting plate. The limiting plate is located in the clearance notch and is flush with the side edge of the back plate.

6. The refrigerator door shelf assembly according to claim 1, characterized in that, The shelf has a recessed receiving groove on the side adjacent to the back plate, which is recessed away from the rack, and the shelf has a first bearing seat and a second bearing seat arranged at intervals along the height direction on the side adjacent to the back plate, the first bearing seat and the second bearing seat being disposed in the receiving groove. The transmission component is a worm gear, one end of which is rotatably connected to the first bearing housing, and the other end of which is rotatably connected to the second bearing housing. The motor is located in the receiving groove, and the output shaft of the motor is connected to one end of the worm gear through a coupling.

7. The refrigerator door shelf assembly according to claim 6, characterized in that, The top of the receiving slot is provided with a slot, the motor is located adjacent to the slot, and the motor is provided with a cover plate. The cover plate is detachably connected to the shelf and covers the slot. And / or, at least one of the first bearing housing and the second bearing housing is detachably connected to the shelf.

8. The refrigerator door shelf assembly according to claim 1, characterized in that, The motor is a stepper motor, the transmission component is a gear, and the output shaft of the stepper motor is connected to the gear.

9. The refrigerator door shelf assembly according to any one of claims 1 to 8, characterized in that, The drive mechanism also includes: A control button is provided on the opposite side wall of the hinge side of the refrigerator door and is electrically connected to the motor. The control button is used to control the operating status of the motor.

10. A refrigerator, characterized in that, include: The door body and the refrigerator door shelf assembly according to any one of claims 1 to 9, wherein the refrigerator door shelf assembly is disposed on the door body.

Images