Lifting assembly, storage device and mobile refrigerator

Abstract

The application discloses a lifting assembly, a storage device and a mobile refrigerator. The lifting assembly comprises a supporting mechanism and a driving mechanism. The supporting mechanism comprises a stand and a sliding sleeve. The sliding sleeve is sleeved on the stand. The upper end outer wall of the stand is connected with a first steering wheel. The inner wall of the sliding sleeve is connected with a first movable pulley and a second movable pulley. The driving mechanism comprises a motor, a winding wheel, a first cable and a second cable. The motor is used for driving the winding wheel to rotate. The winding wheel is provided with a first winding groove and a second winding groove. The winding wheel is arranged at the lower end of the stand. One end of the first cable is wound on the first winding groove and fixed to the winding wheel. The other end of the first cable is sequentially wound on the first steering wheel and the first movable pulley and fixed to the stand. One end of the second cable is wound on the second winding groove and fixed to the winding wheel. The other end of the second cable is wound on the second movable pulley and fixed to the stand. The sliding sleeve can be lifted or lowered by driving the first cable and the second cable by the winding wheel. The lifting assembly has a simple structure and high reliability.

Description

Technical Field

[0001] This invention relates to the field of portable refrigerator technology, and particularly to a lifting assembly, a storage device, and a portable refrigerator. Background Technology

[0002] Currently, portable refrigerators with mobility functions have appeared on the market. Portable refrigerators mainly include a liftable storage device, a refrigeration device, and a moving device. The liftable storage device includes a tray assembly and a lifting assembly. The tray assembly is used to place items, and the lifting assembly can drive the items to rise and fall. The refrigeration device is used to refrigerate the items stored on the tray assembly, and the moving device is used to drive the main body of the smart portable refrigerator to move so that users can easily retrieve items. However, in related technologies, the lifting assembly has a complex structure and poor reliability. The process of driving the tray assembly to rise and fall is prone to jamming, causing the portable refrigerator to malfunction and causing inconvenience to users. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a lifting assembly, in which a first pulley is raised by a first cable, thereby raising the sliding sleeve; and a second pulley is lowered by a second cable, thereby lowering the sliding sleeve. The lifting assembly has a simple structure and high reliability.

[0004] The present invention also proposes a storage device having the above-mentioned lifting components.

[0005] The present invention also proposes a portable refrigerator having the above-mentioned storage device.

[0006] The lifting assembly provided according to an embodiment of the present invention includes: a support mechanism and a drive mechanism. The support mechanism includes a column and a sliding sleeve. The sliding sleeve is fitted onto the column and can slide up and down. A first steering wheel is connected to the upper outer wall of the column, and a first movable pulley and a second movable pulley are connected to the inner wall of the sliding sleeve. The drive mechanism includes a motor, a winding wheel, a first cable, and a second cable. The motor is used to drive the winding wheel to rotate. The winding wheel is provided with a first winding groove and a second winding groove spaced apart along the axial direction. The winding wheel is disposed at the lower end of the column. One end of the first cable is wound around the first winding groove and fixed to the winding wheel, and the other end passes around the first steering wheel and the first movable pulley in sequence and is fixed to the column. One end of the second cable is wound around the second winding groove and fixed to the winding wheel, and the other end passes around the second movable pulley and is fixed to the column.

[0007] The lifting assembly provided by the embodiments of the present invention has at least the following beneficial effects: By using a motor to drive the winding wheel to rotate, the sliding sleeve can be raised by the first pulley driven by the first cable, and lowered by the second pulley driven by the second cable. The lifting assembly has a simple structure, and using different cables to raise and lower the sliding sleeve improves its reliability. When the first cable raises the sliding sleeve, since the first cable is wound around the first pulley, it provides upward tension from both sides of the first pulley, which helps reduce the tension on one side of the first cable, making the force on the first pulley balanced, resulting in a smooth and reliable upward movement of the sliding sleeve. When the second cable lowers the sliding sleeve, it provides downward tension from both sides of the second pulley, which helps reduce the tension on one side of the second cable, making the force on the second pulley balanced, resulting in a smooth downward movement of the sliding sleeve.

[0008] According to an embodiment of the present invention, the lifting assembly has the second winding groove located at the end of the winding wheel away from the column, the column being connected to two second steering wheels, the two second steering wheels being spaced apart and located above the winding wheel, the axis of the second steering wheel being perpendicular to the axis of the winding wheel, the second winding groove being located on the side of the second steering wheel away from the column, the second movable pulley being located on the side of the second steering wheel close to the column, and the second cable sequentially passing over the two second steering wheels and the second movable pulley.

[0009] According to an embodiment of the present invention, the lifting assembly is provided with a column connected to a fixing plate. The fixing plate includes a fixing part and a mounting part. The mounting part is perpendicular to the fixing part. The fixing part is fixedly connected to the column. Two second steering wheels are mounted on the mounting part.

[0010] According to an embodiment of the present invention, the lifting assembly further includes a positioning mechanism, which includes a controller, a trigger, and a plurality of sensors. The motor and the sensors are both electrically connected to the controller. The plurality of sensors are arranged at intervals along the vertical direction on the column. The trigger is disposed on the sliding sleeve and can trigger the sensors to send position information to the controller.

[0011] According to an embodiment of the present invention, the lifting assembly provided by the present invention further includes two limiting blocks, which are respectively disposed on the outer walls of both ends of the column. A stop block is provided protruding from the inner wall of the sliding sleeve, and the stop block is located between the two limiting blocks to limit the movement range of the sliding sleeve.

[0012] According to an embodiment of the present invention, the lifting assembly has a rotating shaft on the side wall of the winding wheel, the first cable and the second cable are both fixed to the rotating shaft, the lower end of the column is provided with a third mounting hole, a bushing is provided in the third mounting hole, and the rotating shaft passes through the bushing.

[0013] According to an embodiment of the present invention, the lifting assembly has a first through hole on the side wall of the winding wheel that communicates with the first winding groove, and the first cable passes through the first through hole to reach the first winding groove.

[0014] According to an embodiment of the present invention, the lifting assembly has a second through hole on the side wall of the winding wheel that communicates with the second winding groove, and the second cable passes through the second through hole to reach the second winding groove.

[0015] According to an embodiment of the present invention, the inner wall of the sliding sleeve is provided with a plurality of rollers, the plurality of rollers are spaced apart in the vertical direction, and the rollers abut against the outer wall of the column.

[0016] According to an embodiment of the present invention, the lifting assembly is provided with a lifting slider on the sliding sleeve, and the first movable pulley and the second movable pulley are arranged side by side at the upper and lower ends of the lifting slider.

[0017] The storage device provided according to an embodiment of the present invention includes a lifting assembly provided according to an embodiment of the present invention. The tray assembly includes a first tray and a second tray. The first tray is fixed to the lower end of the sliding sleeve, and the second tray is fixed to the middle part of the sliding sleeve. The storage device has all the beneficial effects of the lifting assembly.

[0018] The portable refrigerator provided according to an embodiment of the present invention includes the storage device provided in the embodiment of the present invention, and the portable refrigerator has all the beneficial effects of the storage device.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Additional aspects and advantages of the invention will become apparent and readily understood in conjunction with the following description of the embodiments, in which:

[0021] Figure 1 A schematic diagram of the lifting assembly provided for an embodiment of the present invention;

[0022] Figure 2 A cross-sectional view of a lifting assembly provided for an embodiment of the present invention;

[0023] Figure 3A schematic diagram of the lifting assembly when the sliding sleeve is raised, provided for an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the column and drive assembly of the lifting assembly provided in an embodiment of the present invention;

[0025] Figure 5 A partially enlarged schematic diagram of the lower end of the lifting assembly provided in an embodiment of the present invention;

[0026] Figure 6 A partially enlarged schematic diagram of the upper end of the lifting assembly provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of the first locking member and the limiting member of the lifting assembly provided in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the structure of the first locking member of the lifting assembly provided in an embodiment of the present invention;

[0029] Figure 9 A cross-sectional view of the clamping member and the rotating shaft of the lifting assembly provided in an embodiment of the present invention;

[0030] Figure 10 A schematic diagram of the structure of the clamping member of the lifting assembly provided in an embodiment of the present invention;

[0031] Figure 11 A schematic diagram showing the positions of the trigger and sensing elements of the lifting assembly provided in an embodiment of the present invention;

[0032] Figure 12 A schematic diagram of a portable refrigerator provided for an embodiment of the present invention;

[0033] Figure 13 A cross-sectional view of a portable refrigerator provided for an embodiment of the present invention.

[0034] The attached icons are numbered as follows:

[0035] Lifting assembly 100; column 110; sliding sleeve 120; lifting slider 121; first movable pulley 122; second movable pulley 123; first steering wheel 130; motor 140; rotating shaft 150; pressing plane 151; winding wheel 160; first winding groove 161; second winding groove 162; first cable 170; second cable 180; second steering wheel 190; fixing plate 200; first locking member 210; first locking cap 211; first rope winding part 212; first locking rib 213; first anti-rotation plane 214; second locking member 220; pressing member 230; fixing part 231; pressing groove 232; side plate 233; pressing screw 240; pressing cap 241; bushing 250; limiting member 260; tension spring 270; trigger member 280; sensing member 290;

[0036] Storage device 300; first tray 310; second tray 320; refrigeration device 400; moving device 500; outer casing 600. Detailed Implementation

[0037] Embodiments of the present invention 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 are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0039] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0040] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0041] Currently, portable refrigerators with mobility functions have appeared on the market. Portable refrigerators mainly include a liftable storage device, a refrigeration device, and a moving device. The liftable storage device includes a tray assembly and a lifting assembly. The tray assembly is used to place items, and the lifting assembly can drive the items to rise and fall. The refrigeration device is used to refrigerate the items stored on the tray assembly, and the moving device is used to drive the main body of the smart portable refrigerator to move so that users can easily retrieve items. However, in related technologies, the lifting assembly has a complex structure and poor reliability. The process of driving the tray assembly to rise and fall is prone to jamming, causing the portable refrigerator to malfunction and causing inconvenience to users.

[0042] To address this problem, embodiments of the present invention propose a lifting assembly. The first pulley 122 is raised via a first cable 170, which in turn raises the sliding sleeve 120. Conversely, the second pulley 180 is lowered via a second cable 180, which in turn lowers the sliding sleeve 120. The lifting assembly 100 has a simple structure, and the use of different cables to raise and lower the sliding sleeve 120 improves its reliability. The specific structure and function of the lifting assembly according to the first aspect of the present invention will be further described below with reference to the accompanying drawings and text.

[0043] Reference Figures 1 to 6According to an embodiment of the present invention, a lifting assembly 100 is provided, comprising: a support mechanism and a driving mechanism. The support mechanism includes a fixed base, a column 110, and a sliding sleeve 120. The column 110 is vertically fixed on the fixed base. The sliding sleeve 120 is tubular and matches the shape of the column 110. The sliding sleeve 120 is sleeved on the outer periphery of the column 110 and can slide up and down. A first steering wheel 130 is connected to the upper outer wall of the column 110, and a first movable pulley 122 and a second movable pulley 123 are connected to the lower inner wall of the sliding sleeve 120. The driving mechanism includes a motor 140, a winding wheel 160, a first cable 170, and a second cable 180. The winding wheel 160 is connected to a rotating shaft 150, and the motor 140 is connected to the winding wheel 160 through the rotating shaft 150 for driving. The movable winding wheel 160 rotates, and the outer wall of the winding wheel 160 is recessed to form a first winding groove 161 and a second winding groove 162. The first winding groove 161 and the second winding groove 162 are arranged at intervals along the axial direction of the winding wheel 160, and the second winding groove 162 is located on the side of the winding wheel 160 away from the column 110. The winding wheel 160 is fixed to the lower end of the column 110. One end of the first cable 170 is wound around the first winding groove 161 and fixed to the winding wheel 160, and the other end passes through the first steering wheel 130 and the first movable pulley 122 in sequence, and is fixed to the upper part of the column 110. One end of the second cable 180 is wound around the second winding groove 162 and fixed to the winding wheel 160, and the other end passes through the second movable pulley 123 and is fixed to the lower part of the column 110. During operation, when the motor 140 rotates to drive the winding wheel 160 to rotate in the first direction, the second cable 180 wound around the second winding groove 162 is released, and the first cable 170 is wound into the first winding groove 161 to drive the first movable pulley 122 to rise, thereby driving the sliding sleeve 120 to rise; when the motor 140 rotates to drive the winding wheel 160 to rotate in the second direction, the first cable 170 wound around the first winding groove 161 is released, and the second cable 180 is wound into the second winding groove 162 to drive the second movable pulley 123 to fall, thereby driving the sliding sleeve 120 to fall.

[0044] The lifting assembly 100 provided in this embodiment of the invention utilizes a motor 140 to drive a winding wheel 160 to rotate. A first cable 170 drives a first movable pulley 122 to rise, which in turn raises the sliding sleeve 120. A second cable 180 drives a second pulley to fall, which in turn lowers the sliding sleeve 120. The lifting assembly 100 has a simple structure, and using different cables to raise and lower the sliding sleeve 120 improves its reliability. When the first cable 170 raises the sliding sleeve 120, since the first cable 170 is wound around the first movable pulley... On 122, the first cable 170 provides upward tension from both sides of the first movable pulley 122, which helps to reduce the tension on one side of the first cable 170, making the first movable pulley 122 more evenly stressed, and ensuring a smooth and reliable upward movement of the sliding sleeve 120. Similarly, when the second cable 180 drives the sliding sleeve 120 downward, the second cable 180 provides downward tension from both sides of the second movable pulley 123, which helps to reduce the tension on one side of the second cable 180, making the second movable pulley 123 more evenly stressed, and ensuring a smooth downward movement of the sliding sleeve 120.

[0045] It should be noted that there can be two winding wheels 160, one of which is provided with a first winding groove 161 and the other winding wheel 160 is provided with a second winding groove 162; the first cable 170 is wound around the first movable pulley 122, and the first cable 170 provides an upward tension from both sides of the first movable pulley 122, which can reduce the tension acting on the first cable 170. Similarly, the second cable 180 is wound around the second movable pulley 123, and the second cable 180 provides a downward tension from both sides of the second movable pulley 123, which can reduce the tension acting on the second cable 180.

[0046] It should be noted that multiple rollers can be provided on the inner wall of the sliding sleeve 120. When the motor 140 drives the sliding sleeve 120 to slide on the column 110, the rollers can roll along the wall of the column 110, reducing the contact area between the sliding sleeve 120 and the column 110, and reducing the resistance of the sliding sleeve 120 sliding on the column 110. This can slow down the wear between the sliding sleeve 120 and the column 110, reduce the noise generated by the sliding sleeve 120 sliding on the column 110, and improve the user experience.

[0047] Reference Figure 4 and Figure 5It is understandable that the inner wall of the sliding sleeve 120 is provided with a long strip-shaped lifting slider 121, which is arranged vertically. The first movable pulley 122 and the second movable pulley 123 are arranged side by side at the upper and lower ends of the lifting slider 121, and the first movable pulley 122 is located above the second movable pulley 123. This facilitates the first cable 170 to be wound around the first movable pulley 122 from top to bottom and the second cable 180 to be wound around the second movable pulley 123 from bottom to top. Furthermore, the side-by-side arrangement of the first movable pulley 122 and the second movable pulley 123 makes the structure of the inner wall of the sliding sleeve 120 more compact, which helps to save space and reduce the volume of the sliding sleeve 120.

[0048] Reference Figure 4 and Figure 5 It is understood that the upper end of the lifting slider 121 is provided with a vertically arranged groove, the first movable pulley 122 is set in the groove and can slide up and down, the second movable pulley 123 is fixed to the lower end of the lifting slider 121, and a tension spring 270 is provided between the first movable pulley 122 and the second movable pulley 123. The tension spring 270 provides a downward pulling force to the first movable pulley 122 to tighten the first movable pulley 122, which can maintain the tension of the first cable 170 and the second cable 180 and prevent the first cable 170 or the second cable 180 from falling off.

[0049] It is understandable that a vertically arranged groove can be provided at the lower end of the lifting slider 121, and the second movable pulley 123 can be installed in the groove and slide up and down. The first movable pulley 122 is fixed at the upper end of the lifting slider 121. A tension spring 270 is provided between the first movable pulley 122 and the second movable pulley 123. The tension spring 270 provides an upward pulling force to the second movable pulley 123 to tighten the second movable pulley 123, and can also maintain the tension of the first cable 170 and the second cable 180 to prevent the second cable 180 from falling off.

[0050] It is understandable that vertically arranged grooves can be provided at both the upper and lower ends of the lifting slider 121. The first movable pulley 122 and the second movable pulley 123 are both installed in the grooves and can slide up and down. A tension spring 270 is provided between the first movable pulley 122 and the second movable pulley 123. The tension spring 270 simultaneously pulls the first movable pulley 122 and the second movable pulley 123, and can also maintain the tension of the first cable 170 and the second cable 180, preventing the second cable 180 from falling off.

[0051] Reference Figures 2 to 5It is understandable that, since the first winding groove 161 is arranged at intervals, and the second winding groove 162 is located at the end of the winding wheel 160 away from the column 110, two second steering wheels 190 are connected to the outer wall of the column 110. The two second steering wheels 190 are arranged at intervals from top to bottom and are located above the winding wheel 160. The axial direction of the second steering wheel 190 is perpendicular to the axial direction of the winding wheel 160. The second winding groove 162 is located on one side of the second steering wheel 190. The second movable pulley 1... 23 is located on the other side of the second steering wheel 190. The second cable 180 is released from the second winding groove 162 and passes around the two second steering wheels 190 and the second movable pulley 123 in sequence. The two second steering wheels 190 turn the second cable 180 so that the second cable 180 released from the second winding groove 162 is aligned with the groove on the outer wall of the second movable pulley 123. This can effectively prevent the second cable 180 from falling off due to excessive relative positional offset between the second winding groove 162 and the second movable pulley 123.

[0052] It should be noted that the two second movable pulleys 123 can be the same or different in size, and can be changed accordingly during use according to specific needs.

[0053] Reference Figure 2 , Figure 4 and Figure 5 It is understood that the column 110 is connected to the fixing plate 200, which includes a connecting part and a mounting part. The mounting part is perpendicular to the connecting part. The upper and lower ends of the connecting part are fixed to the column 110 by fasteners. The outer wall of the connecting part fits against the outer wall of the column 110, which helps to improve the reliability of the fixation and also saves space. Two second steering wheels 190 are installed at the upper and lower ends of the mounting part of the fixing plate 200, and the fixation of the two second steering wheels 190 is stable and reliable.

[0054] Reference Figures 1 to 12 It is understood that the first cable 170 is fixed to the upper part of the column 110 by the first locking member 210. The first locking member 210 includes a first locking cap 211. When fixing the first cable 170, the end of the first cable 170 is placed between the first locking cap 211 and the column 110. The first locking member 210 is fixed to the column 110 by fasteners. The first locking cap 211 and the wall surface of the column 110 can lock the end of the first cable 170. The first cable 170 is not easy to fall off, which improves the reliability of the lifting assembly 100 and enhances the user experience.

[0055] Reference Figures 6 to 8It is understood that the first locking member 210 also includes a first rope winding portion 212, and the first locking cap 211 is located at the end of the first rope winding portion 212 away from the column 110. In the process of fixing the first cable 170, the end of the first cable 170 is first wound around the first rope winding portion 212, and then the first locking member 210 is fixed to the column 110 using fasteners, so that the first locking cap 211 fits and presses against the first cable 170 wound around the first rope winding portion 212, which helps to improve the reliability of fixing the first cable 170.

[0056] Reference Figure 8 It is understandable that, in order to further improve the reliability of fixing the first cable 170, a first locking rib 213 can be provided on the wall surface of the first locking cap 211 facing the first rope winding part 212. The first locking rib 213 extends radially along the first locking cap 211. In the process of fixing the first cable 170, the end of the first cable 170 is first wound around the first rope winding part 212, and then the first locking member 210 is fixed to the column 110 using fasteners. The first locking cap 211 presses the first cable 170 wound around the first rope winding part 212, and the first locking rib 213 presses the first cable 170 radially from the first locking cap 211.

[0057] Reference Figure 8 It is understandable that multiple first locking ribs 213 can be provided on the first locking cap 211. The multiple first locking ribs 213 are arranged circumferentially on the first locking cap 211. The multiple first locking ribs 213 press the first cable 170 from multiple different directions, making the first cable 170 less likely to fall off.

[0058] Reference Figure 7 and Figure 8 It is understandable that each first locking rib 213 is recessed at one end near the first rope winding portion 212 to form an annular first wire receiving groove. The end of the first locking rib 213 away from the first rope winding portion 212 can be regarded as a claw hook. When the first cable 170 is wound around the first rope winding portion 212, at least part of the first cable 170 is received in the first wire receiving groove. The claw hook at the end of the first locking rib 213 away from the first rope winding portion 212 tightens the first cable 170 and prevents the first cable 170 wound around the first rope winding portion 212 from unraveling.

[0059] Understandably, each second locking rib has a recessed end near the second rope winding portion to form an annular second wire receiving groove. The end of the second locking rib away from the second rope winding portion can be regarded as a claw hook. When the second cable 180 is wound around the second rope winding portion, at least part of the second cable 180 is received in the second wire receiving groove. The claw hook at the end of the second locking rib away from the second rope winding portion tightens the second cable 180, preventing the second cable 180 wound around the second rope winding portion from unraveling.

[0060] Reference Figure 7 and Figure 8 It is understandable that the first inlet and outlet channel is defined between two adjacent first locking ribs 213. Along the circumference of the first locking cap 211, the width of the first inlet and outlet channel is greater than the diameter of the first cable 170. During the process of fixing the first cable 170, after the end of the first cable 170 is wrapped around the first rope section 212, the first cable 170 extends out from the first inlet and outlet channel. This prevents the first cable 170 from extending out from the first locking rib 213, which would raise the first locking cap 211 and cause a decrease in the clamping effect. This helps to improve the reliability of the fixation.

[0061] Reference Figure 8 It is understood that the first rope winding part 212 is columnar, and the outer wall of the first rope winding part 212 is provided with a first anti-rotation plane 214. The upper part of the column 110 is provided with a first mounting hole that matches the shape of the first rope winding part 212. The first rope winding part 212 is installed in the first mounting hole. During the process of fixing the first cable 170, after the end of the first cable 170 is wrapped around the first rope winding part 212, the first rope winding part 212 is inserted into the first mounting hole and then fixed with fasteners. At this time, the first anti-rotation plane 214 is stuck in the inner wall of the first mounting hole. Even if the first cable 170 generates a tension along the circumference of the first locking member 210, the first locking member 210 will not rotate.

[0062] Reference Figure 1 , Figure 3 and Figure 5 It is understood that the second cable 180 is fixed to the lower part of the column 110 by the second locking member 220. The second locking member 220 includes a second locking cap. When fixing the second cable 180, the end of the second cable 180 is placed between the second locking cap and the column 110. The second locking member 220 is fixed to the column 110 by fasteners. The second locking cap and the wall surface of the column 110 can lock the end of the second cable 180. The second cable 180 is not easy to fall off, which improves the reliability of the lifting assembly 100 and enhances the user experience.

[0063] Reference Figure 1 , Figure 3 and Figure 5 It is understood that the second locking member 220 also includes a second rope winding portion, and the second locking cap is located at one end of the second rope winding portion. In the process of fixing the second cable 180, the end of the second cable 180 is first wound around the second rope winding portion, and then the second locking member 220 is fixed to the column 110 using fasteners, so that the second locking cap fits and presses against the second cable 180 wound around the second rope winding portion, which helps to improve the reliability of fixing the second cable 180.

[0064] Reference Figure 1 , Figure 3 and Figure 5 It is understandable that, in order to further improve the reliability of fixing the second cable 180, a second locking rib can be formed by protruding the second locking cap toward the wall of the second rope winding part. The second locking rib locks the second cable 180. In the process of fixing the second cable 180, the end of the second cable 180 is first wrapped around the second rope winding part, and then the second locking member 220 is fixed to the column 110 with fasteners. The second locking cap fits against the second cable 180 wrapped around the second rope winding part, and the second locking rib presses the second cable 180 from the radial direction of the second locking cap.

[0065] Reference Figure 1 , Figure 3 and Figure 5 It is understandable that multiple second locking ribs can be provided on the second locking cap. The multiple second locking ribs are arranged circumferentially on the second locking cap. The multiple second locking ribs press the second cable 180 from multiple different directions, making the second cable 180 less likely to fall off.

[0066] Reference Figure 1 , Figure 3 and Figure 5 It is understandable that a second inlet / outlet channel is defined between two adjacent second locking ribs. Along the circumference of the second locking cap, the width of the second inlet / outlet channel is greater than the diameter of the second cable 180. During the process of fixing the second cable 180, after the end of the second cable 180 is wrapped around the second rope section, the second cable 180 extends out from the second inlet / outlet channel to prevent the second cable 180 from extending out from the second locking rib. This prevents the phenomenon of the second locking rib being raised, which would lead to a decrease in the clamping effect, and helps to improve the reliability of the fixation.

[0067] Reference Figure 1 , Figure 3 and Figure 5 It is understood that the second rope winding part is columnar, and the outer wall of the second rope winding part is provided with a second anti-rotation plane. The upper part of the column 110 is provided with a second mounting hole that matches the shape of the second rope winding part. The second rope winding part is installed in the second mounting hole. During the process of fixing the second cable 180, after the end of the second cable 180 is wrapped around the second rope winding part, the second rope winding part is inserted into the second mounting hole and then fixed with fasteners. At this time, the second anti-rotation plane is stuck in the inner wall of the second mounting hole. Even if the second cable 180 generates a tension along the circumference of the second locking member 220, the second locking member 220 will not rotate.

[0068] It should be noted that the structures of the first locking member 210 and the second locking member 220 may be the same or different, and the specific structures of the first locking member 210 and the second locking member 220 may be changed according to actual needs.

[0069] Reference Figure 2 and Figure 11 It is understood that multiple sensors 290 are spaced apart along the length of the column 110, and trigger elements 280 are mounted on the sliding sleeve 120. The motor 140 and the sensors 290 are both electrically connected to the controller. The motor 140 drives the sliding sleeve 120 to slide on the column 110, allowing the trigger element 280 to engage with the sensors 290 and trigger the sensors 290. This enables the sensors 290 to send position information of the sliding sleeve 120 to the controller, thereby controlling the position of the sliding sleeve 120 on the column 110. This prevents the sliding sleeve 120 from overextending or overretracting, improves the accuracy of the sliding sleeve 120's movement position, facilitates user access to items, and enhances the user experience.

[0070] The trigger 280 and the sensing element 290 can be a magnet and a Hall sensor, a magnet and a reed switch, or a limit switch and a baffle, as long as they can recognize position signals, and there is no limitation here.

[0071] Reference Figure 2 , Figure 4 and Figure 7 It is understandable that the column 110 is connected to two limiting members 260, one of which is located above the second locking member 220 and the other is located below the first locking member 210. The inner wall of the sliding sleeve 120 is provided with a protruding stop, which is located between the two limiting members 260 to limit the movement range of the sliding sleeve 120 and prevent the sliding sleeve 120 from disengaging from the column 110.

[0072] It should be noted that the limiting member 260 includes a mounting plate and a limiting piece. There is a gap between the limiting piece and the mounting plate. The limiting piece 260 can lock the stop on the sliding sleeve 120 to limit the sliding sleeve 120. The first cable 170 and the second cable 180 are both passed through the gap. The mounting plate is provided with a boss on the side wall facing the limiting piece. The boss is used to support the first cable 170 and the second cable 180 so that the first cable 170 is aligned with the middle of the first movable pulley 122.

[0073] Reference Figures 2 to 5 It is understandable that the first locking member 210 and the second locking member 220 can be fixed to the winding wheel 160 by a clamping member 230.

[0074] Reference Figure 5 , Figure 9 and Figure 10It is understood that the winding wheel 160 is connected to the rotating shaft 150, and the clamping member 230 includes a fixing part 231. Both sides of the fixing part 231 are provided with clamping grooves 232. When fixing the first cable 170 and the second cable 180, the ends of the first cable 170 and the second cable 180 are first wound around a clamping groove 232 respectively. Then, the fixing part 231 of the clamping member 230 is fixed to the rotating shaft 150 by the clamping screw 240. The bottom wall of the clamping groove 232 cooperates with the outer wall of the rotating shaft 150 to clamp the first cable 170 and the second cable 180. Then, the first cable 170 is wound around the first winding groove 161, and the second cable 180 is wound around the second winding groove 162. The first cable 170 and the second cable 180 can be fixed by a clamping member 230. The operation is convenient and the fixing method is simple and reliable.

[0075] Reference Figure 9 and Figure 10 It is understood that the clamping member 230 also includes a side plate 233. Both sides of the fixing part 231 are connected with side plates 233. The connection between the side plate 233 and the fixing part 231 is recessed to form a clamping groove 232 surrounding the clamping member 230. When the first cable 170 and the second cable 180 are respectively provided in a clamping groove 232, the side plates 233 on both sides of the fixing part 231 can block the first cable 170 and the second cable 180, preventing the first cable 170 and the second cable 180 from sliding out from the side of the clamping member 230. Furthermore, the clamping groove 232 is arranged around the clamping member 230, which can better accommodate the first cable 170 and the second cable 180 wound around the clamping groove 232, which is beneficial for saving space.

[0076] Reference Figure 9 and Figure 10 It is understood that the side plate 233 of the clamping member 230 extends toward the rotating shaft 150 and surrounds part of the rotating shaft 150. The side wall of the side plate 233 toward the rotating shaft 150 is provided with an arc-shaped surface. When the clamping member 230 is fixed to the rotating shaft 150 by the clamping screw 240, the gap between the arc-shaped surface of the side plate 233 and the outer wall surface of the rotating shaft 150 is less than the width of the first cable 170 and the second cable 180. The arc-shaped surface of the side plate 233 cooperates with the outer wall surface of the rotating shaft 150 to confine the first cable 170 and the second cable 180 in the clamping groove 232, preventing the first cable 170 or the second cable 180 from sliding out from the gap between the arc-shaped surface of the side plate 233 and the outer wall surface of the rotating shaft 150.

[0077] It should be noted that the arc-shaped surfaces on the two side plates 233 also have a positioning and installation function. When fixing the first cable 170 and the second cable 180, the ends of the first cable 170 and the second cable 180 are first wound around a clamping groove 232, and then the clamping part 230 is placed on the rotating shaft 150. The arc-shaped surfaces on the side plates 233 and the outer wall of the rotating shaft 150 are used to achieve positioning. Then the fixing part 231 is fixed by clamping screws 240.

[0078] Reference Figure 9 and Figure 10 It is understood that the rotating shaft 150 has a horizontally arranged pressing plane 151 on the wall facing the pressing member 230. When fixing the first cable 170 and the second cable 180, the ends of the first cable 170 and the second cable 180 are first wound around a pressing groove 232, and then the pressing member 230 is placed on the rotating shaft 150, so that the first cable 170 and the second cable 180 wound around the pressing groove 232 abut against the pressing plane 151 of the rotating shaft 150. Then, the fixing part 231 is fixed by the pressing screw 240. The pressing member 230 and the pressing plane 151 cooperate to press the first cable 170 and the second cable 180, which helps to improve the reliability of pressing the first cable 170 and the second cable 180.

[0079] Reference Figure 9 It is understood that the clamping screw 240 includes a stud and a clamping cap 241. The clamping cap 241 is disposed at the end of the stud. The clamping screw 240 passes through the middle of the fixing part 231 of the clamping member 230. The width of the clamping cap 241 extends to the clamping groove 232. When the fixing part 231 is fixed by the clamping screw 240, the clamping cap 241 of the clamping screw 240 can clamp the first cable 170 and the second cable 180 from the upper side of the clamping member 230, which helps to improve the reliability of clamping.

[0080] It should be noted that the winding wheel 160, the clamping member 230, the first cable 170 and the second cable 180 can be defined as cable fixing mechanisms. These cable fixing mechanisms can be applied not only to the lifting assembly 100 provided in this embodiment of the invention, but also to other similar mechanisms.

[0081] Reference Figures 1 to 6It is understood that the side wall of the winding wheel 160 is provided with a first threading hole that connects to the first winding groove 161. The position of the first threading hole can be close to the bottom wall of the first winding groove 161. The first cable 170 can directly pass through the first threading hole to reach the first winding groove 161 without having to go around the side wall of the winding wheel 160. During installation, one end of the first cable 170 is fixed to the rotating shaft 150 by the clamping member 230, and the other end of the first cable 170 passes through the first threading hole to reach the first winding groove 161. Then, it is wound around the first winding groove 161, the first steering wheel 130 and the first movable pulley 122 in sequence, and finally locked to the upper part of the column 110 by the first locking member 210.

[0082] Reference Figures 1 to 6 It is understood that the side wall of the winding wheel 160 is provided with a second threading hole that connects to the second winding groove 162. The position of the second threading hole can be close to the bottom of the second winding groove 162. The second cable 180 passes through the second threading hole to reach the second winding groove 162 without having to go around the side wall of the winding wheel 160. During installation, one end of the second cable 180 is fixed to the rotating shaft 150 by the clamping member 230, and the other end of the second cable 180 passes through the second threading hole to reach the second winding groove 162, and then winds around the second winding groove 162 and the second movable pulley 123. Finally, it is locked to the lower part of the column 110 by the second locking member 220.

[0083] Reference Figures 1 to 6 It is understandable that winding wheels 160 and first steering wheels 130 can be provided on opposite sides of the column 110. Similarly, first movable pulleys 122 and second movable pulleys 123 are connected to opposite sides of the inner wall of the sleeve 120. Each winding wheel 160 is wound with a first cable 170 and a second cable 180. Each first cable 170 is wound around a first steering wheel 130 and a first movable pulley 122, and each second cable 180 is wound around a second movable pulley 123. A through hole is provided at the lower end of the column 110. The motor 140 is connected to the rotating shaft 150, which passes through the through hole at the lower end of the column 110 to simultaneously connect two winding wheels 160 to rotate. When the lifting assembly 100 is running, the motor 140 drives the rotating shaft 150 to rotate, and the rotating shaft 150 simultaneously drives the two winding wheels 160 to rotate. The two winding wheels 160 respectively drive the first cable 170 and the second cable 180, and at the same time provide upward or downward pulling force on both sides of the sliding sleeve 120, which improves the reliability of the lifting assembly 100 operation and ensures that the sliding sleeve 120 is subjected to balanced force, so that the movement is smooth during the rising or falling process.

[0084] Reference Figure 2It is understandable that the column 110 is provided with a mounting hole, and a bushing 250 is provided in the mounting hole. The rotating shaft 150 passes through the bushing 250 and can rotate. The bushing 250 can prevent the rotating shaft 150 from directly contacting the column 110, avoiding wear of the column 110 caused by the rotation of the rotating shaft 150. Furthermore, the bushing 250 extends axially along the rotating shaft 150 to surround part of the rotating shaft 150, which can increase the contact area with the rotating shaft 150 and reduce the pressure per unit area of ​​the contact surface between the bushing 250 and the rotating shaft 150, which is beneficial to reduce wear and improve service life.

[0085] Reference Figure 12 and Figure 13 This invention also proposes a portable refrigerator, including a shell 600, a liftable storage device 300, a refrigeration device 400, and a moving device 500. The liftable storage device 300 includes a tray assembly and a lifting assembly 100. The tray assembly is used to place items, and the lifting assembly 100 can drive the items to rise and fall. The refrigeration device 400 is used to refrigerate the items stored on the tray assembly, and the moving device 500 is used to drive the main body of the intelligent portable refrigerator to move so that users can easily retrieve items.

[0086] The lifting component 100 of the liftable storage device 300 has all the beneficial effects of the lifting component 100 proposed in the embodiments of the present invention. The tray component also includes a first tray 310 and a second tray 320. The first tray 310 is fixed to the lower end of the sliding sleeve 120, and the second tray 320 is fixed to the middle part of the sliding sleeve 120. The first tray 310 and the second tray 320 can store items at the same time, and the heights of the first tray 310 and the second tray 320 are different to adapt to the height of different food or beverage packaging, which is beneficial to improving the user experience.

[0087] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. The present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A storage device, characterized in that, Includes a tray assembly and a lifting assembly, wherein the lifting assembly includes: The support mechanism includes a column and a sliding sleeve. The sliding sleeve is fitted onto the column and can slide up and down. A first steering wheel is connected to the upper outer wall of the column, and a first movable pulley and a second movable pulley are connected to the inner wall of the sliding sleeve. The driving mechanism includes a motor, a winding wheel, a first cable, and a second cable. The motor drives the winding wheel to rotate. The winding wheel is provided with a first winding groove and a second winding groove spaced apart along the axial direction. The winding wheel is located at the lower end of the column. One end of the first cable is wound around the first winding groove and fixed to the winding wheel, and the other end passes through the first steering wheel and the first movable pulley in sequence and is fixed to the column. One end of the second cable is wound around the second winding groove and fixed to the winding wheel, and the other end passes through the second movable pulley and is fixed to the column. The sliding sleeve is provided with a lifting slider. The first movable pulley and the second movable pulley are arranged side by side at the upper and lower ends of the lifting slider. The upper end of the lifting slider is provided with a vertically arranged groove. The first movable pulley is disposed in the groove and can slide up and down. The second movable pulley is fixed at the lower end of the lifting slider. A tension spring is provided between the first movable pulley and the second movable pulley. The tension spring provides a downward pulling force to the first movable pulley to tighten it. The tray assembly includes a first tray and a second tray, the first tray being fixed to the lower end of the sliding sleeve and the second tray being fixed to the middle of the sliding sleeve.

2. The storage device according to claim 1, characterized in that, The second winding groove is located at the end of the winding wheel away from the column. The column is connected to two second steering wheels, which are arranged at intervals and located above the winding wheel. The axis of the second steering wheel is perpendicular to the axis of the winding wheel. The second winding groove is located on the side of the second steering wheel away from the column. The second movable pulley is located on the side of the second steering wheel close to the column. The second cable passes around the two second steering wheels and the second movable pulley in sequence.

3. The storage device according to claim 2, characterized in that, The column is connected to a fixing plate, which includes a fixing part and an mounting part. The mounting part is perpendicular to the fixing part, and the fixing part is fixedly connected to the column. Two second steering wheels are mounted on the mounting part.

4. The storage device according to claim 1, characterized in that, The lifting assembly also includes a positioning mechanism, which includes a controller, a trigger, and multiple sensors. The motor and the sensors are both electrically connected to the controller. The multiple sensors are arranged at intervals along the vertical direction on the column. The trigger is located on the sliding sleeve and can trigger the sensors to send position information to the controller.

5. The storage device according to claim 4, characterized in that, The column is also provided with two limiting blocks, which are respectively disposed on the outer walls of both ends of the column. The inner wall of the sliding sleeve is provided with a stop block, which is located between the two limiting blocks to limit the movement range of the sliding sleeve.

6. The storage device according to claim 1, characterized in that, The winding wheel has a rotating shaft, and the first cable and the second cable are both fixed to the rotating shaft. The lower end of the column is provided with a third mounting hole, and a bushing is provided in the third mounting hole. The rotating shaft passes through the bushing.

7. The storage device according to claim 6, characterized in that, The side wall of the winding wheel is provided with a first thread hole that connects to the first winding groove, and the first cable passes through the first thread hole to reach the first winding groove.

8. The storage device according to claim 7, characterized in that, The side wall of the winding wheel is provided with a second threading hole that connects to the second winding groove, and the second cable passes through the second threading hole to reach the second winding groove.

9. The storage device according to claim 1, characterized in that, The inner wall of the sliding sleeve is provided with multiple rollers, which are distributed at intervals along the vertical direction, and the rollers abut against the outer wall of the column.

10. A portable refrigerator, characterized in that, Includes the storage device as described in any one of claims 1 to 9.

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