Adjustable lift combined type shelf

Abstract

An adjustable lift combined type shelf is provided. The adjustable lift combined type shelf includes a plurality of post components, several assembly fixtures, multiple coupling holes, and several storage layers. The post components include tubes and holes. The assembly fixtures have assembly columns that are installed into the holes of the post components, allowing the assembly fixtures to be mounted on the upper and lower ends of the column assemblies. The storage layers include movable shelves and four sleeve components, each positioned at the four corners of the movable shelf. Each sleeve component is equipped with an assembly element, and the size of the sleeve components is larger than the size of the tubes. The storage layers move along the assembly direction, and the protruding columns snap into the ends of the coupling holes, thereby assembling the storage layers between the column assemblies. The four sleeve components in the storage layers at the upper and lower ends of each column assembly fit snugly against the outer surface of the assembly fixtures.

Description

Liftable combination storage rack The present disclosure relates to a storage rack, and more particularly to a lifting and lowering combination storage rack with lifting and lowering storage layers. Modular shelving is a type of storage rack that can be assembled from multiple independent components (such as storage shelves and connectors). Modular shelving is typically designed for flexibility and scalability to suit various applications, including homes and offices. The conventional assembly structure of storage shelves and columns is relatively complex and time-consuming. In addition, the height of the storage shelves cannot be adjusted according to actual conditions. In other words, the storage shelves cannot be raised or lowered after being fixed to the columns, which also causes inconvenience in use. The disclosed embodiment provides a lifting combination storage rack, wherein the storage layers can be raised and lowered, the structure is simple and relatively stable, and the convenience of use is improved. One embodiment of the present disclosure provides a liftable modular storage rack comprising a plurality of column assemblies, a plurality of assembly fixtures, a plurality of snap-fit ​​holes, and a plurality of storage tiers. Each column assemblies comprises a tube and a plurality of holes, and each column assemblies has an upper end and a lower end opposite the upper end. Each upper and lower end of each column assemblies is provided with at least one assembly column, wherein each assembly column is mounted in a corresponding hole, thereby assembling the assembly fixtures to the upper and lower ends of each column assemblies. Each snap-fit ​​hole has a terminal end. These storage layers respectively include a movable layer frame, four sleeve assemblies, and four assembly elements. The four sleeve assemblies are respectively arranged at the four corners of the corresponding movable layer frame. Each sleeve assembly is provided with an assembly element. A protruding column is provided on one side of each assembly element. Each protruding column is located inside the corresponding sleeve assembly. The size of the four sleeve assemblies is larger than the size of these pipe fittings. These storage layers move along an assembly direction. Each protruding column is respectively engaged with the end end of the corresponding engaging hole to assemble these storage layers between these column groups, and the four sleeve assemblies in the corresponding storage layers located at the upper end and the lower end of each column group are respectively engaged with the outer surface of the corresponding assembly fixing piece. In one embodiment, along the assembly direction, the sizes of the engaging holes are a tapered hole structure. In one embodiment, the above-mentioned snap-fit ​​holes are respectively provided in the pipe fitting at intervals, and each snap-fit ​​hole has an open end and an end end opposite to each other, the size of each open end is larger than the size of the corresponding end end, and the size of each protruding column is smaller than the size of the open end of the corresponding snap-fit ​​hole. In one embodiment, the cross-section of each of the end ends is a curved structure, and the cross-section of each of the open ends is a rectangular structure with an opening. In one embodiment, the cross-section of each of the open ends is a curved structure, and the cross-section of each of the end ends is a rectangular structure with an opening. In one embodiment, each of the above-mentioned sleeve assemblies is a square sleeve, and each of the pipe fittings is a square tube structure. Each of the pipe fittings includes a first plate, a second plate, a third plate, and a group of plates. Each first plate, the corresponding second plate, the corresponding third plate, and the corresponding assembly plate are connected to form a square tube three-dimensional structure. The first plate and the corresponding second plate are on opposite sides, and the assembly plate and the corresponding third plate are on opposite sides. These snap-fit ​​holes are arranged at different positions of the assembly plate, and two holes are respectively arranged in the third plate. In one embodiment, each of the above-mentioned assembly fixing parts includes a bottom panel, a first side panel, a second side panel, and an assembly column. The two sides of each bottom panel are respectively vertically connected to the corresponding first side panel and the second side panel. Each first side panel and the corresponding second side panel are opposite sides. The assembly column is arranged and protrudes from an inner surface of the corresponding bottom panel. Each first side panel is attached to the corresponding first panel, each second side panel is attached to the corresponding second panel, and each bottom panel is attached to the corresponding third panel. In one embodiment, the assembly plate of each of the above-mentioned pipe fittings is provided with a plurality of inclined plates, each inclined plate is connected to the open end of the corresponding buckle hole, and each inclined plate is formed by bending the open end of the corresponding buckle hole. In one embodiment, each of the above-mentioned pipe fittings is a circular tube structure, and each sleeve assembly is a circular sleeve. Along the assembly direction, the size of these snap-fit ​​holes is a tapered hole structure, and one of these snap-fit ​​holes is set in the corresponding assembly fixing piece. In one embodiment, each of the sleeve assemblies includes two semicircular assemblies that are engaged with each other. Based on the above, the disclosed lifting combination storage rack has a simple and relatively stable assembly structure, and the storage layer can move along the lifting direction on the column assembly, thereby improving the overall convenience of use. Furthermore, assembly fixings are respectively provided at the upper and lower ends of the column group so that the protruding column in the sleeve assembly is fastened outside the buckling hole. The assembly fixings are located in the accommodating portion of the sleeve assembly to enhance the stability of the storage layer set on the column group. In addition, the size of the sleeve assembly in the storage layer of the present disclosure is larger than the size of the pipe fittings of the column group, so these storage layers can be moved up and down relative to the column group in the lifting direction, and the storage layers can be assembled to the column group during the movement along the assembly direction. In addition, the stability of the storage layers assembled to the column group can be improved by providing assembly fixings at the upper and lower ends of the column group. To make the present disclosure more clear and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. The following examples are illustrated in detail with accompanying figures. However, these examples are not intended to limit the scope of this disclosure. Furthermore, the figures are for illustrative purposes only and are not drawn to scale. For ease of understanding, identical components will be designated with the same reference numerals throughout the following description. The terms “include,” “comprising,” “having,” etc. mentioned in this disclosure are open-ended terms, meaning “including but not limited to.” In the description of each embodiment, when terms such as “first,” “second,” “third,” and “fourth” are used to describe elements, they are only used to distinguish these elements from one another and do not limit the order or importance of these elements. In the descriptions of various embodiments, the term "component" may refer to a single part or element that constitutes a larger system, device, or structure. These components may be independent or collaborate with other components to perform specific functions. The specific meaning of "component" varies across different fields, but generally refers to a basic unit that makes up the whole. In the description of each embodiment, the so-called “square tube” refers to a tube with a square cross-section. In the description of each embodiment, the so-called “round tube” refers to a tube with a circular cross-section. In the descriptions of various embodiments, a "hollow tube" refers to a circular or other shaped tubular structure with a hollow interior and a certain thickness on the exterior. Unlike solid tubes, a hollow tube's interior is hollow, which can reduce weight, save materials, and provide greater space efficiency. In the description of each embodiment, the so-called “depressed portion” refers to a region or a local portion of a surface that is lower in depth than other surrounding portions, and is concave or sunken. In the descriptions of various embodiments, a "tapered hole structure" refers to a hole in an object or structure that gradually tapers or contracts. Unlike a conventional hole with a constant diameter, a tapered hole's diameter gradually decreases with depth or length. In other words, the diameter of a tapered hole gradually decreases from one end to the other. Typically, this type of hole is larger at one end and smaller at the other. In the description of each embodiment, the so-called "sleeve" refers to a sleeve with a specific shape, which enables it to fit closely with other components to provide stable connection and support. In the description of various embodiments, the so-called "hollow structure" refers to a structure with an internal cavity or void. Such a hollow structure is usually surrounded by an external boundary and forms a hollow area inside. In the description of each embodiment, the so-called "stacking direction" refers to the manner or order in which objects are stacked or arranged, and generally refers to the relative position and arrangement direction of the objects in space. In the description of each embodiment, the so-called "assembly direction" refers to the direction in which components, parts or elements are connected or arranged in a certain manner or order during the assembly process, describing how to combine the various parts at a specific angle, position or order. In the description of each embodiment, the so-called "lifting direction" refers to movement in the vertical direction, which corresponds to movement in the horizontal direction, such as the movement direction of an object along the vertical axis, including movement of the object upward (lifting) or downward (falling). FIG1 is a perspective schematic diagram of an embodiment of a liftable modular storage rack according to the present disclosure. Referring to FIG1, the liftable modular storage rack 100 of the present disclosure includes a plurality of post components 110 and five storage layers 120, wherein each storage layer 120 has a sleeve assembly 122 at its four corners. FIG1 shows a total of four post components 110, wherein the two post components 110 located in the front are separated by a distance, the two post components 110 located in the rear are also separated by a distance, and the two post components 110 located in the front and back are also separated by a distance, and these post components 110 are arranged in a rectangular shape or an arbitrary shape. These five storage layers 120 are sequentially located between the post components 110 along the stacking direction L1, and these storage layers 120 have a structural form that can move along the lifting direction LA and can be assembled between these post components 110 by means of the sleeve assembly 122. Therefore, these storage layers 120 have a structure that can move along the lifting direction LA. The height position of the storage layer 120 can be adjusted according to the size of the storage items to improve the convenience of use. The number of storage layers 120 can be adjusted according to actual needs, so that various combinations of lifting combination storage racks 100 can be formed. Figure 2A is a perspective schematic diagram of a first column assembly according to the present disclosure. Figure 2B is a perspective schematic diagram of a second column assembly according to the present disclosure. Figure 3 is a perspective schematic diagram of the assembly process of the first and second column assemblies according to the present disclosure. Referring to Figures 1 through 3, the column assembly 110 of the present disclosure has a predetermined length and can be adjusted in length based on the desired height of the liftable modular storage rack 100. Furthermore, the column assembly 110 can also be assembled to a predetermined length. Taking Figures 1, 2A, and 2B as examples, the column assembly 110 has an upper end T1 and a lower end T2 opposite to the upper end T1. The column assembly 110 can be divided into a first column assembly 110A in Figure 2A and a second column assembly 110B in Figure 2B. The first column assembly 110A has a foot 170 installed at the bottom 112D thereof. The foot 170 enhances the overall stability of the liftable modular storage rack 100 shown in Figure 1. The first column assembly 110A has a lower end T2 and an assembly end TA2, with the lower end T2 and the assembly end TA1 being opposite each other. The second column assembly 110B has an upper end T1 and an assembly end TA1, with the upper end T1 and the assembly end TA2 being opposite ends. The second column assembly 110B is provided with a connector 160, which is positioned adjacent to the assembly end TA1. The assembly end TA1 of the second column assembly 110B faces the assembly end TA2 of the first column assembly 110A. The connector 160 of the second column assembly 110B is mounted on the first column assembly 110A to increase the height of the entire column assembly 110, as shown in FIG1 . Specifically, the first column set 110A and the second column set 110B in the column set 110 each include a tube 112 and a plurality of engaging holes 116 . These engaging holes 116 are provided at intervals through the tube 112 . The engaging holes 116 extend along the length of the tube 112 , which is parallel to an assembly direction L2 (which is opposite to the stacking direction L1 shown in FIG. 1 ). The engaging holes 116 have an open end MA and an end MB opposite each other, with the open end MA being larger than the end MB. In one embodiment, the end MB has a curved cross-section, while the open end MA has an open rectangular cross-section. In one embodiment, along the assembly direction L2 , the size of the fastening hole 116 gradually decreases from the opening end MA to the end end MB. That is, the size of the fastening hole 116 along the assembly direction L2 is a tapered hole structure. The tube 112 can be a square tube structure, comprising a first plate 112A, a second plate 112B, a third plate 112C, and an assembly plate DA. The first plate 112A and the second plate 112B are parallel to each other, while the third plate 112C and the assembly plate DA are parallel to each other. The third plate 112C is connected to the first plate 112A and the second plate 112B on both sides, while the assembly plate DA is connected to the first plate 112A and the second plate 112B on both sides. Thus, the first plate 112A, the second plate 112B, the third plate 112C, and the assembly plate DA are connected to form a three-dimensional square tube structure. The first plate 112A and the second plate 112B are on opposite sides, the assembly plate DA and the third plate 112C are on opposite sides, and the internal space formed by the first plate 112A, the second plate 112B, the third plate 112C, and the assembly plate DA is a hollow portion LD, that is, the tube 112 has a hollow portion LD and is a hollow tube. As shown in FIG. 3 , the connector 160 can be assembled into the hollow portion LD within the tube 112 . The hollow portion LD is the space inside the tube 112 . The connector 160 is inserted into the hollow portion LD. The connector 160 is assembled within the tube 112 , so that the second column assembly 110B is assembled with the first column assembly 110A. These snap-fitting holes 116 are respectively provided at different positions of the assembly plate DA of the pipe fitting 112 at intervals. The structural type of the connecting member 160 can be adjusted according to the structural type of the pipe fitting 112. For example, the assembly plate DA of the pipe fitting 112 is provided with a plurality of inclined plates 118, each inclined plate 118 is provided at one end of the snap-fitting hole 116, as shown in FIG3 , the inclined plate 118 is connected to the open end MA of the snap-fitting hole 116, and the inclined plate 118 is a plate formed by bending the open end MA of the snap-fitting hole 116, and the inclined plate 118 is inclined toward the hollow portion LD inside the pipe fitting 112, so that the inclined position of the inclined plate 118 is located in the hollow portion LD. Therefore, the connecting member 160 is a concave component 162, and protruding protrusions 162A are provided at both ends of the concave component 162, so that the concave component 162 is concave and can avoid the setting position of the inclined plate 118. In an embodiment not shown, if the pipe is not provided with a bevel plate, the connector can be adjusted to a non-concave component according to the structural type of the pipe. Figure 4A is a schematic diagram of an exploded view of the assembly fixture and the lower end of the column assembly according to the present disclosure. Figure 4B is a schematic diagram of an exploded view of the pipe fitting and the upper end of the assembly fixture according to the present disclosure. Figure 4C is a schematic diagram of a three-dimensional view of the assembly fixture according to the present disclosure. Referring to Figures 1 and 4A to 4C, the lifting combination storage rack 100 of the present disclosure, in addition to the column assembly 110 and the storage layer 120, also includes a plurality of assembly fixtures 140, wherein each column assembly 110 is provided with a hole BA at the upper end T1 and the lower end T2 respectively for installing the assembly fixture 140. Referring again to Figures 1 and 4A, an assembly fixture 140 is assembled at each of the upper end T1 and lower end T2 of the column assembly 110. The assembly fixture 140 is assembled from the third plate 112C of the tube 112. The third plate 112C is provided with a plurality of holes BA. Specifically, the holes BA and the aforementioned snap-fit ​​holes 116 are located on opposite sides of the tube 112 (the third plate 112C and the assembly plate DA). The assembly fixture 140 is provided with an assembly column 146, which is mounted in the hole BA to assemble the assembly fixture 140 at the upper end T1 and lower end T2 of the column assembly 110. The number and structure of the assembly columns 146 will match the number and structure of the holes BA located on the third plate 112C. In this embodiment, there is one assembly column 146 , and the assembly column 146 is in the form of an elongated column. A corresponding hole BA is also provided, and the hole BA is in the form of an elongated hole in conjunction with the elongated column. In one embodiment, the assembly fixture 140 has a U-shaped configuration and includes a bottom panel 142, a first side panel 144A, a second side panel 144B, and an assembly column 146. The bottom panel 142 is perpendicularly connected to the first side panel 144A and the second side panel 144B on opposite sides. The first side panel 144A and the second side panel 144B are on opposite sides. The assembly column 146 is disposed on and protrudes from the inner surface of the bottom panel 142. Taking FIG. 4A as an example, the assembly fixture 140 is assembled from the third plate 112C of the pipe 112. That is, if the assembly plate DA is defined as the front side of the pipe 112, the assembly fixture 140 is installed at the rear side of the pipe 112. The first side plate 144A, the second side plate 144B, and the bottom plate 142 of the assembly fixture 140 correspond to the first plate 112A, the second plate 112B, and the third plate 112C of the pipe 112, respectively. The position of the assembly column 146 corresponds to the hole BA located on the third plate 112C. When the assembly fixture 140 moves toward the third plate 112C, the assembly column 146 is assembled into the hole BA, so that the first side plate 144A is attached to the surface of the first plate 112A, the second side plate 144B is attached to the surface of the second plate 112B, and the bottom plate 142 is attached to the surface of the third plate 112C, thereby assembling the assembly fixture 140 to the pipe 112. The assembled state can be seen in Figure 7. Similarly, the structure and process of assembling the assembly fixture 140 to the third plate 112C of the pipe 112 in Figure 4B are the same as those in Figure 4A. Therefore, the assembly fixture 140 is disposed at the upper end T1 and lower end T2 of the column assembly 110. Therefore, although the assembly plate DA is provided with multiple engaging holes 116, only two engaging holes 116 (i.e., located at the upper end T1 and lower end T2 of the column assembly 110) correspond to the assembly fixture 140. Figure 5 is a perspective schematic diagram of a storage shelf according to the present disclosure. Please refer to Figures 1 and 5. The storage shelf 120 of the present disclosure includes a movable shelf 121 and four sleeve assemblies 122. The movable shelf 121 is, for example, a grid. The four first sleeve assemblies 122 are respectively disposed at the four corners of the movable shelf 121. The sleeve assemblies 122 are, for example, square sleeves, which are generally square in shape and have a hollow structure. The storage layer 120 disclosed herein includes a movable shelf 121, four sleeve assemblies 122, and four assembly elements 124, wherein the movable shelf 121 is, for example, a grid. The four first sleeve assemblies 122 are respectively disposed at the four corners of the movable shelf 121. The sleeve assembly 122 is, for example, a square sleeve having a generally square shape, and is a hollow structure having an accommodating portion CA. Each sleeve assembly 122 is provided with an assembly element 124, and a protruding column MC is provided on one side of the assembly element 124 (as shown in Figures 7 and 8). The protruding column MC is located within the accommodating portion CA within the sleeve assembly 122. In one embodiment, the sleeve assembly 122 can be a square sleeve body having four plates connected to form a hollow square structure, and the accommodating portion CA is the sleeve assembly 122 as the space inside the square sleeve, but the present disclosure is not limited to this. The assembly component can be any other shape, or the shape of the assembly component can be adjusted according to the structural type of the pipe. FIG6 is a perspective schematic diagram of the process of installing the storage layer to the snap-fit ​​holes and assembly fixings at the lower end of the column group according to the present disclosure. FIG7 is a partial perspective enlarged schematic diagram of the process of installing the storage layer to the snap-fit ​​holes and assembly fixings at the lower end of the column group according to the present disclosure. FIG8 is a partial perspective enlarged schematic diagram of the process of installing the storage layer to the snap-fit ​​holes in the column group according to the present disclosure. Since the upper end T1 and the lower end T2 of the column group 110 are respectively provided with assembly fixings 140, please refer to FIG6 to FIG8 to illustrate the assembly process of the storage layer 120 of the present disclosure installed at the lower end T2 of the column group 110, and the combination structure of the sleeve assembly 122 with the snap-fit ​​holes 116 and the assembly fixings 140 respectively. The process of installing the storage layer 120 at the upper end T1 of the column group 110 is similar to that of the lower end T2, so it will not be repeated. The sleeve assembly 122 of the present disclosure is larger than the tube 112 of the column assembly 110, and the protruding column MC is smaller than the open end MA of the engaging hole 116. This allows the protruding column MC to move along the assembly direction L2 from the open end MA of the engaging hole 116 to the end MB. Furthermore, the protruding column MC's dimensions roughly match the dimensions of the end MB of the engaging hole 116, allowing the protruding column MC to be secured to the end MB. The storage layer 120 moves along the assembly direction L2, which is opposite to the stacking direction L1 shown in FIG. 1 . The square sleeve structure of the sleeve assembly 122 is sleeved onto the outside of the tube 112, and the protruding column MC in the assembly element 124 faces and moves toward the engaging hole 116 (i.e., in the same direction as the assembly direction L2). The storage layer 120 continues to move along the assembly direction L2, so that the protruding column MC in the assembly element 124 moves along the open end MA of the fastening hole 116 until the protruding column MC is fastened to the end end MB of the fastening hole 116, thereby fixing the storage layer 120 at the position of the lower end T2 of the tube 112 in the column assembly 110. In one embodiment, as the storage layer 120 continues to move along the assembly direction L2, the assembly fixtures 140 are disposed at the upper end T1 and lower end T2 of the column assembly 110, respectively, so that the protruding columns MC in the sleeve assembly 122 are fastened outside the engaging holes 116, and the sleeve assembly 122 is affixed to the outer surface of the corresponding assembly fixture 140. The first side panel 144A, the second side panel 144B, and the bottom panel 142 of the assembly fixture 140 are affixed to the inner surface of the sleeve assembly 122, so that the assembly fixture 140 is located in the receiving portion CA within the sleeve assembly 122, thereby enhancing the stability of the storage layer 120 at the upper end T1 and lower end T2 of the column assembly 110. While no assembly fixture 140 is provided between the upper end T1 and the lower end T2 of the column assembly 110 of the present disclosure, the assembly process for attaching the storage layer 120 to the coupling structure of the sleeve assembly 122 and the engaging hole 116 of the column assembly 110 in FIG. 7 is similar to the assembly process for attaching the storage layer 120 to the coupling structure of the sleeve assembly 122 and the engaging hole 116 of the column assembly 110 in FIG. After the storage layer 120 is assembled to the lower end T2 of the column assembly 110 via the sleeve assembly 122, the sleeve assembly 122 of the present disclosure is larger than the size of the tube 112 of the column assembly 110. Another storage layer 120 is then moved along the assembly direction L2 onto the tube 112. The square sleeve structure of the sleeve assembly 122 is positioned outside the tube 112, creating a movable space between the sleeve assembly 122 and the tube 112. The protruding column MC faces and moves toward the engaging hole 116 (i.e., in the same direction as the assembly direction L2). The storage layer 120 continues to move along the assembly direction L2, causing the protruding column MC in the assembly element 124 to move along the open end MA of the engaging hole 116 until the protruding column MC engages with the end end MB of the engaging hole 116. Once the protruding column MC engages with the engaging hole 116, the storage layer 120 is secured to the tube 112 in the column assembly 110. Furthermore, as the aforementioned storage layer 120 continues to move along the assembly direction L2, since the size of the fastening hole 116 along the assembly direction L2 is a tapered hole structure, the size of the fastening hole 116 gradually decreases from the opening end MA to the end end MB. Therefore, as the protruding column MC moves from the opening end MA to the end end MB along the assembly direction L2, the tightness of the combination between the protruding column MC and the fastening hole 116 gradually tightens, making it easier for the protruding column MC to enter the fastening hole 116. As the protruding column MC continues to move along the assembly direction L2, the size of the fastening hole 116 gradually decreases, allowing the protruding column MC to be fastened within the fastening hole 116, and the assembler to be informed that the assembly is complete. FIG9 is a perspective view of the process of installing a storage layer on the upper end of a column group and assembling a fixing member according to the present disclosure. FIG10 is a partial perspective view of the process of installing a storage layer on the upper end of a column group and assembling a fixing member according to the present disclosure. Please refer to FIG1, FIG9 and FIG10. After assembling the three storage layers 120 above the lower end T2 of the column group 110 in sequence, a storage layer 120 is then assembled on the upper end T1 of the column group 110. The assembly steps are the same as those in FIG8. It should be noted that, as shown in FIG10, the buckling hole 116 here is still a tapered hole structure. The buckling hole 116 is provided with an end end MB without an inclined plate 118. The protruding column MC continues to move along the assembly direction L2. As the size of the buckling hole 116 gradually decreases, the protruding column MC can be fastened within the end end MB of the buckling hole 116. As can be seen, the size of the sleeve assembly 122 in the storage layer 120 of the present disclosure is larger than the size of the pipe 112 of the column assembly 110. Therefore, these storage layers 120 can be moved up and down relative to the column assembly 110 along the lifting direction LA. During the movement along the assembly direction L2, the storage layer 120 can be assembled to the column assembly 110. In addition, by providing assembly fixing parts at the upper end T1 and the lower end T2 of the column assembly 110, the stability of the storage layer 120 assembled to the column assembly 110 can be improved. 7 and 8 , when adjusting the storage layer 120 to move upward relative to the column assembly 110 along the stacking direction L1 , the protruding columns MC in the assembly element 124 follow the inclined structure of the inclined plate 118 to facilitate the movement of the storage layer 120 . Figure 11 is a partially exploded, enlarged perspective view of the cover member and assembly components of the present disclosure. Referring to Figures 1 and 11, in one embodiment, a cover member 180 can be added to the column assembly 110 to cover the hollow portion LD above the column assembly 110, enhancing the aesthetics. The cover member 180 can include a coupling structure 182. The coupling structure 182's configuration matches the configuration of the hollow portion LD, allowing the coupling structure 182 to be inserted into the hollow portion LD, thereby securing the cover member 180 to the column assembly 110. The above Figures 1 to 11 are based on the example of the pipe 112 of the column group 110 being a square tube structure, but the present disclosure is not limited to this. The structure of the column group disclosed in this disclosure can also be applied to a circular tube structure. The following Figures 12 to 18 are used as examples. FIG12 is a perspective schematic diagram of another embodiment of a liftable modular storage rack according to the present disclosure. Referring to FIG12 , the liftable modular storage rack 200 of the present disclosure includes a plurality of column assemblies 210 and five storage layers 220, wherein each storage layer 220 has sleeve assemblies 222 at its four corners. FIG12 shows a total of four column assemblies 210, wherein the two column assemblies 210 located in the front are separated by a distance, the two column assemblies 210 located in the rear are also separated by a distance, and the two column assemblies 210 located in the front and back are also separated by a distance. These column assemblies 210 are arranged in a rectangular shape or any other shape. Legs 170 are disposed beneath the column assemblies 210, and the leg 170 increases the overall stability of the liftable modular storage rack 100 shown in FIG1 . The column assembly 210 has an upper end T11 and a lower end T12 opposite to the upper end T11. The storage layer 220 can be divided into a first storage layer 220A and a second storage layer 220B, and the sleeve assembly 222 can be divided into a first sleeve assembly 222A and a second sleeve assembly 222B, wherein the first sleeve assembly 222A is set at the four corners of the first storage layer 220A, and the second sleeve assembly 222B is set at the four corners of the second storage layer 220B. The five storage layers 220 are sequentially located between the column groups 110 along the stacking direction L1, wherein the upper end T11 and the lower end T12 of the column group 210 correspond to the four first-type sleeve assemblies 222A connected to the first-type storage layers 220A, and three second-type storage layers and the second-type sleeve assemblies 222B connected to the first-type storage layers 220A are arranged between the two first-type storage layers 220A. These storage tiers 220 are movable along the lifting direction LA and can be assembled between the column assemblies 210 via sleeve assemblies 222. Therefore, the movable structure of these storage tiers 220 along the lifting direction LA allows the height of the storage tiers 120 to be adjusted according to actual conditions, thereby enhancing ease of use. The number and type of storage tiers 220 can be adjusted according to actual needs, thereby forming a variety of different combinations of lift-type modular storage racks 200. The column assembly 210 of this embodiment includes a tube 212 and a plurality of engaging holes 216. The tube 212 can be a hollow circular tube. This can be adjusted by adding a cover 280 to the column assembly 210. The cover 280 is adjusted to fit the shape and structure of the tube 212 and is mounted on the column assembly 210. These engaging holes 216 are provided at intervals through the tube 212. The engaging holes 216 are arranged along the length of the tube 212, parallel to an assembly direction L2 (which is opposite to the stacking direction L1 shown in FIG. 12 ). The engaging holes 216 have an open end MA2 and an end MB2, with the open end MA2 being larger than the end MB2. In one embodiment, the dimensions of the engaging hole 216 gradually decrease from the open end MA2 to the terminal end MB2 along the assembly direction L2. In other words, the engaging hole 216 has a tapered hole structure along the assembly direction L2. In one embodiment, the terminal end MB2 has a rectangular cross-section with an opening, while the open end MA2 has a curved cross-section (as shown in FIG. 16 or FIG. 17 ). FIG13 is a schematic diagram of an exploded view of the assembly fixings and the lower end of the column group according to the present disclosure. In addition to the column group 210 and the storage layer 220, the lifting combination storage rack 200 of the present disclosure also includes a plurality of assembly fixings 240, wherein two holes BA2 are respectively provided at the upper end T11 and the lower end T12 of each column group 210 for installing the assembly fixings 240. In addition, the assembly fixings 240 of this embodiment can be provided with another type of snap-fit ​​hole 241, that is, two holes BA2 are respectively provided at the upper end T11 and the lower end T12 of each column group 210, and a snap-fit ​​hole 216 is provided between the upper end T11 and the lower end T12. The snap-fit ​​hole 241 is the same as the snap-fit ​​hole 216. Along the assembly direction L2, as the size of the snap-fit ​​hole 241 gradually decreases, the snap-fit ​​hole 241 has an end MB1. The assembly fixture 240 is disposed on the outer surface of the tube 212 between the upper end T1 and the lower end T2 of the column assembly 110. The assembly fixture 240 is provided with two assembly columns 246. These two assembly columns 246 are installed in the corresponding holes BA2 to assemble the assembly fixture 240 to the tube 212. In addition, since the tube 212 of this embodiment is a circular tube structure, one embodiment of the assembly fixture 240 can include two semicircular components 242, each of which has an assembly column 246 disposed on its inner surface. The assembly column 246 has a structural type of an elongated column, and the structure of the hole BA2 can match the aforementioned elongated column to form an elongated hole. In one embodiment, the two semicircular components 242 are assembled to the outer surface of the tube 212 by interlocking. For example, a protrusion 242A and a recess 242B are provided on either side of each semicircular component 242. The protrusion 242A of one semicircular component 242 corresponds to and engages with the recess 242B of the other semicircular component 242, and the recess 242B of one semicircular component 242 corresponds to and engages with the protrusion 242A of the other semicircular component 242. With this arrangement, the assembly cylinder 246 of one semicircular component 242 is mounted in the corresponding hole BA2, and the assembly cylinder 246 of the other semicircular component 242 is mounted in the corresponding hole BA2. The protrusion 242A and recess 242B of one semicircular component 242 are respectively assembled with the corresponding recess 242B and protrusion 242A of the other semicircular component 242, thereby assembling the two semicircular components 242 to the tube 212. The above description uses the lower end T12 position of the column group 210 as an example. Similarly, the assembly fixing member 240 at the upper end T11 position of the column group 210 is provided on the pipe 212 of the column group 110, and the assembly fixing member 240 at the lower end T12 position of the column group 210 is provided on the pipe 212 of the column group 110, and will not be repeated. FIG14 is a partially enlarged perspective view illustrating the installation of the first type of storage layer into the snap-fit ​​holes at the lower end of the column assembly and the assembly fixture according to the present disclosure. FIG15 is a partially enlarged perspective view illustrating the installation of the first type of storage layer into the snap-fit ​​holes in the column assembly according to the present disclosure. Please refer to FIG14 and FIG15 to illustrate the assembly process of the first type of storage layer 220A of the storage layer 220 of the present disclosure being installed at the lower end T12 of the column assembly 210, and the coupling structure of the first type of sleeve assembly 222A of the sleeve assembly 222 and the snap-fit ​​holes 241 of the assembly fixture 240. The installation process of the first type of storage layer 220A at the upper end T11 of the column assembly 210 is similar to that at the lower end T12, and therefore will not be repeated. The first storage layer 220A in the storage layer 220 includes a movable shelf 221 and four first-type sleeve assemblies 222A, each located at the four corners of the movable shelf 221. The first-type sleeve assembly 222A is a generally circular sleeve, hollow in shape, with a receiving portion CA1. Each first-type sleeve assembly 222A is provided with an assembly element 224A, one side of which is provided with a protruding column MC1 (as shown in FIG. 15 ). The protruding column MC1 is a recessed structure recessed into the outer surface of the sleeve assembly 222 and located within the first-type sleeve assembly 222A. The first-type sleeve assembly 222A of the present disclosure is larger than the tube 212 of the column assembly 210. The first-type storage layer 220A moves along an assembly direction L2, which is opposite to the stacking direction L1 shown in FIG. 12 . The circular sleeve structure of the first-type sleeve assembly 222A is positioned outside the tube 212. The protruding column MC1 of the assembly element 224A faces and moves toward the engagement hole 241 (i.e., in the same direction as the assembly direction L2). The first-type storage layer 220A continues to move along the assembly direction L2 until the protruding column MC1 engages with the terminal end MB1 of the engagement hole 241, thereby securing the first-type storage layer 220A at the lower end T12 of the tube 212 in the column assembly 110. Therefore, it can be seen that the size of the first sleeve assembly 222A in the first storage layer 220A disclosed in the present invention is larger than the size of the pipe 212 of the column assembly 210. Therefore, the first storage layer 220A can be moved up and down relative to the column assembly 210 along the lifting direction LA, and the first storage layer 220A can be assembled to the column assembly 210 during the movement along the assembly direction L2. In addition, the assembly fixing parts 240 can be provided at the upper end T1 and the lower end T2 of the column assembly 210 to improve the stability of the storage layer 220 assembled to the column assembly 210. FIG16 is a partially enlarged perspective view of the process of installing the second type storage layer into the snap-fit ​​holes of the column assembly according to the present disclosure. FIG17 is a partially enlarged perspective view of the process of installing the second type storage layer into the snap-fit ​​holes of the column assembly according to the present disclosure. Referring to FIG16 and FIG17, in this embodiment, a second type sleeve assembly 222B is disposed at each of the four corners of the second type storage layer 220B. The second type sleeve assembly 222B is a circular sleeve that is generally circular in shape and has a hollow structure with an accommodating portion CA2. Each second type sleeve assembly 222B is provided with an assembly element 224B. The assembly element 224B is a protruding column extending into the accommodating portion CA2 and is located within the first and second type sleeve assemblies 222B. The size of the second sleeve assembly 222B disclosed herein is larger than the size of the tube 212 of the column assembly 210. The second storage layer 220B moves along the assembly direction L2, which is opposite to the stacking direction L1 as shown in Figure 12. The circular sleeve structure of the second sleeve assembly 222B is sleeved on the outer side of the tube 212, and the assembly element 224B faces and moves toward the direction of the locking hole 216 (i.e., the same as the assembly direction L2). As the assembly element 224B moves from the opening end MA2 to the ending end MB2, the tightness of the assembly element 224B and the fastening hole 216 gradually tightens, making it easier for the assembly element 224B to enter the fastening hole 216. As the assembly element 224B continues to move along the assembly direction L2, the size of the fastening hole 216 gradually decreases, and the assembly element 224B can be tightened within the fastening hole 216, allowing the assembler to know that the assembly is complete, thereby fixing the second storage layer 220B to the tube 212 in the column assembly 210. Furthermore, the column assembly 210 can be assembled to a predetermined length using the assembly method shown in Figures 2A and 2B. In one embodiment, Figure 18 is a perspective schematic diagram illustrating the assembly process of the first and second column assemblies disclosed herein. Referring to Figure 18 , one end of the second column assembly 210B is connected to a connector 260, which has a recess 264. A protruding fixture EA is provided within the hollow portion LD2 of the first column assembly 210A. The recess 264 engages with the protruding fixture EA, allowing the connector 260 to be inserted into the hollow portion LD2, thereby assembling the first and second column assemblies 210A and 210B. In summary, the lifting combination storage rack disclosed herein has a simple and relatively stable assembly structure, and the storage layer can move along the lifting direction on the column assembly, thereby improving overall convenience of use. In addition, the present disclosure discloses a gradually shrinking hole structure in the size of the fastening hole along the assembly direction. As the protruding column moves along the assembly direction, the tightness of the connection between the protruding column and the fastening hole gradually decreases, making it easier for the protruding column to enter the fastening hole. However, as the protruding column continues to move along the assembly direction, the size of the fastening hole gradually decreases, so that the protruding column can be tightened within the fastening hole, and the assembler can be informed that the assembly is complete. In addition, assembly fixings are respectively provided at the upper and lower ends of the column group so that the protruding column in the sleeve assembly is fastened outside the buckling hole. The assembly fixings are located in the accommodating portion of the sleeve assembly to enhance the stability of the storage layer set on the column group. In addition, the size of the assembly components in the storage layers of the present disclosure is larger than the size of the pipes of the column group, so these storage layers can be moved up and down relative to the column group in the lifting direction, and the storage layers can be assembled to the column group during the movement along the assembly direction. In addition, the stability of the storage layers assembled to the column group can be improved by providing assembly fixings at the upper and lower ends of the column group. Although the present disclosure has been disclosed above with reference to the embodiments, they are not intended to limit the present disclosure. Anyone with ordinary skill in the art may make modifications and improvements without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope of the appended patent applications. 100, 200: Liftable modular storage rack 110, 210: Column assembly 110A, 210A: First type column assembly 110B, 210B: Second type column assembly 112, 212: Pipe fitting 112A: First plate 112B: Second plate 112C: Third plate 112D: Bottom 116, 216, 241: Snap-fit ​​hole 118: Inclined plate 120, 220: Storage layer 220A: First type storage layer 220B: Second type storage layer 121, 221: Movable shelf 122, 222: Sleeve assembly 124, 224A, 224B: Assembly element 140, 240: Assembly fixing member 142: Bottom plate 144A: First side plate 144B: Second side plate 146, 246: Assembly column 160, 260: Connector 162: Concave component 162A: Protruding component 170: Foot 180, 280: Covering component 182: Combination structure 222A: First sleeve component 222B: Second sleeve component 242: Semicircular component 242A: Protrusion 242B: Recess 264: Recess BA, BA2: Holes CA, CA1, CA2: Accommodation portion DA: Assembly plate EA: Protruding fixing member L1: Stacking direction L2: Assembly direction LA: Lifting direction LD, LD2: Hollow portion MA, MA2: Opening end MB, MB1, MB2: End MC, MC1: Protruding column T1, T11: Upper end T2, T12: Lower end TA1, TA2: Assembly end Figure 1 is a perspective schematic diagram of an embodiment of a liftable combination storage rack according to the present disclosure. Figure 2A is a perspective schematic diagram of a first column assembly according to the present disclosure. Figure 2B is a perspective schematic diagram of a second column assembly according to the present disclosure. Figure 3 is a perspective schematic diagram of the assembly process of the first column assembly and the second column assembly according to the present disclosure. Figure 4A is an exploded schematic diagram of the assembly fixture and the lower end of the column assembly according to the present disclosure. Figure 4B is an exploded schematic diagram of the pipe fitting and the upper end of the assembly fixture according to the present disclosure. Figure 4C is a perspective schematic diagram of the assembly fixture according to the present disclosure. Figure 5 is a perspective schematic diagram of a storage layer according to the present disclosure. Figure 6 is a perspective schematic diagram of the process of installing the storage layer to the snap-fit ​​holes at the lower end of the column assembly and assembling the fixture according to the present disclosure. Figure 7 is a partially enlarged perspective schematic diagram of the process of installing the storage layer to the snap-fit ​​holes at the lower end of the column assembly and assembling the fixture according to the present disclosure. Figure 8 is a partially enlarged perspective schematic diagram of the process of installing the storage layer to the snap-fit ​​holes in the column assembly according to the present disclosure. Figure 9 is a perspective schematic diagram of the process of installing a storage layer to the upper end of a column group and assembling a fixing member according to the present disclosure. Figure 10 is a partial perspective schematic diagram of the process of installing a storage layer to the upper end of a column group and assembling a fixing member according to the present disclosure. Figure 11 is a perspective, partially enlarged, exploded schematic diagram of the cover and assembly components according to the present disclosure. Figure 12 is a perspective schematic diagram of another embodiment of a lifting combination storage rack according to the present disclosure. Figure 13 is a exploded schematic diagram of the assembly fixing member and the lower end of the column group according to the present disclosure. Figure 14 is a partial perspective, enlarged schematic diagram of the process of installing the first type of storage layer to the snap-fitting hole at the lower end of the column group and assembling a fixing member according to the present disclosure. Figure 15 is a partial perspective, enlarged schematic diagram of the process of installing the first type of storage layer to the snap-fitting hole in the column group according to the present disclosure. Figure 16 is a partial perspective, enlarged schematic diagram of the process of installing the second type of storage layer to the snap-fitting hole in the column group according to the present disclosure. Figure 17 is a partial perspective enlarged schematic diagram of the second storage layer being installed in the buckling holes of the column assembly according to the present disclosure. Figure 18 is a perspective schematic diagram of the assembly process of the first column assembly and the second column assembly according to the present disclosure. 100: Lifting combination storage rack 110: Column group 112: Pipe fittings 116: buckle hole 120: Storage layer 122: Sleeve assembly 180: Covering parts 170: Foot column L1: Stacking direction L2: Assembly direction LA: lifting direction T1: Upper end T2: lower end

Claims

1. A lifting combination storage rack, comprising: A plurality of column assemblies, each comprising a tube and a plurality of holes, each having an upper end and a lower end opposite the upper end, each of the column assemblies being provided with at least one hole; a plurality of assembly fixtures, each having at least one assembly column, wherein each assembly column is mounted in a corresponding hole, so as to assemble the assembly fixtures to the upper and lower ends of each column assemblies; A plurality of snap-fit ​​holes each having an end end; and a plurality of storage layers each comprising a movable layer frame, four sleeve assemblies, and four assembly elements, the four sleeve assemblies being respectively arranged at the four corners of the corresponding movable layer frame, each sleeve assembly being provided with an assembly element, a protruding column being provided on one side of each assembly element, each protruding column being located inside the corresponding sleeve assembly, the size of the four sleeve assemblies being larger than the size of the pipe fittings, the storage layers moving along an assembly direction, each protruding column being respectively snapped into the end end of the corresponding snap-fit ​​hole to assemble the storage layers between the column groups, and the four sleeve assemblies in the storage layers corresponding to the upper end and the lower end of each column group being respectively fitted to the outer surface of the corresponding assembly fixing piece.

2. In the lifting assembly storage rack as described in claim 1, the sizes of the engaging holes along the assembly direction are a gradually shrinking hole structure.

3. The liftable modular storage rack as described in claim 1, wherein the snap-fitting holes are respectively provided at intervals through the tube, each snap-fitting hole having an open end and an end end opposite to each other, the size of each open end being larger than the size of the corresponding end end, and the size of each protruding column being smaller than the size of the open end of the corresponding snap-fitting hole.

4. In the lifting combination storage rack as described in claim 3, the cross-section of each of the end ends is a curved structure, and the cross-section of each of the open ends is a rectangular structure with an opening.

5. In the lifting combination storage rack as described in claim 3, the cross-section of each open end is a curved structure, and the cross-section of each terminal end is a rectangular structure with an opening.

6. As described in claim 3, the lifting combination storage rack, wherein each sleeve assembly is a square sleeve, each pipe fitting is a square tube structure, each pipe fitting includes a first plate, a second plate, a third plate, and a group of plates, each first plate, the corresponding second plate, the corresponding third plate and the corresponding group of plates are connected to form the square tube three-dimensional structure, the first plate and the corresponding second plate are on opposite sides, the group of plates and the corresponding third plate are on opposite sides, the snap-fit ​​holes are penetrated at different positions of the group of plates, and two of the holes are respectively penetrated in the third plate.

7. A lifting combination storage rack as described in claim 6, wherein each of the assembly fixing parts includes a bottom panel, a first side panel, a second side panel, and an assembly column, the two sides of each bottom panel are respectively vertically connected to the corresponding first side panel and the second side panel, each first side panel and the corresponding second side panel are opposite sides, the assembly column is arranged and protrudes from an inner surface of the corresponding bottom panel, each first side panel is attached to the corresponding first panel, each second side panel is attached to the corresponding second panel, and each bottom panel is attached to the corresponding third panel.

8. As described in claim 6, the lifting combination storage rack, wherein the assembly plate of each tube is provided with a plurality of inclined plates, each inclined plate is connected to the open end of the corresponding buckle hole, and each inclined plate is bent from the open end of the corresponding buckle hole.

9. As described in claim 1, the lifting combination storage rack, wherein each of the tubes is a circular tube structure, each of the sleeve assemblies is a circular sleeve, and along the assembly direction, the size of the fastening holes is a gradually shrinking hole structure, and one of the fastening holes is arranged in the corresponding assembly fixing piece.

10. In the lifting combined storage rack as described in claim 9, each of the sleeve components includes two semicircular components that are engaged with each other.

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