Multipurpose display stand

Abstract

The utility model discloses a multi-purpose display stand in the technical field of industrial design, which comprises a front support column and a rear support column, a guide rail is mounted right in front of the rear support column in a bolt fastening manner, and a rear limiting block is movably mounted on the guide rail and movably assembled on the guide rail in a reciprocating sliding manner along the vertical direction of the guide rail; a power transmission mechanism is arranged between the rear supporting columns, the rear limiting blocks are driven by the power transmission mechanism to slide along the guide rails, so that the object placing plate is automatically switched between the horizontal placing state and the inclination angle state, and the guide rails are fastened and installed on the opposite inner side faces of the front supporting columns and the rear supporting columns through bolts. And a limiting block assembly comprising a front limiting block and a rear limiting block is arranged to be in sliding fit with the corresponding guide rails, so that the aim of accurately controlling the supporting points of the storage plate to move is achieved. When the power transmission mechanism drives the rear limiting block to move, the front limiting block serves as a stable supporting point, stable switching between the horizontal state and the inclined state of the storage plate is achieved, and diversified display requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of industrial design technology, and in particular to a multi-purpose display rack. Background Technology

[0002] In commercial display and warehousing fields, traditional display racks have relatively limited functionality. Flat-lay racks are suitable for items requiring high stability and no particular viewing angle, making full use of floor space, but they are less effective for items that need to be prominently displayed or attract attention. While angled racks excel at attracting attention and showcasing product features, they have limitations when placing certain specialized items. Faced with diverse display and storage needs, how to make display racks flexibly adapt to different scenarios and achieve efficient switching between display methods has become a pressing technical challenge.

[0003] Existing multi-purpose display racks have significant shortcomings. Traditional flat display racks are single-function, only capable of displaying items laid flat, making them unsuitable for scenarios requiring a strong display effect and attracting customer attention, and failing to effectively enhance the attractiveness and display value of items. While display racks with a slight tilt offer advantages in highlighting items and guiding the eye, their tilted design makes it extremely inconvenient to place irregularly shaped or unstable items, easily causing them to slip and limiting their applicability to diverse display needs. Therefore, we propose a multi-purpose display rack to address the aforementioned problems. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Therefore, the purpose of this utility model is to provide a multi-purpose display rack that can solve the obvious shortcomings of existing multi-purpose display racks. Traditional flat display racks have a single function, only allowing items to be laid flat for display. They are unsuitable for scenarios that require emphasizing display effects and attracting customers' attention, and cannot effectively enhance the attractiveness and display value of the items. While display racks with a certain tilt angle have advantages in highlighting items and guiding the eye, their tilted design makes it extremely inconvenient to place some irregularly shaped or unstable items, which are prone to slipping. This limits the range of applicable items and makes it difficult to meet diverse display needs.

[0006] To solve the above-mentioned technical problems, this utility model provides a multi-purpose display rack, which adopts the following technical solution: it includes front support columns and rear support columns. Two symmetrically distributed front support columns are located on the front side of the display rack, and two symmetrically distributed rear support columns are located on the rear side of the display rack. The two front support columns and two rear support columns are connected by bolts to form a stable rectangular support structure. A guide rail is installed on the front of the rear support columns by bolt fastening. A rear limiting block is movably installed on the guide rail and is movably assembled on the guide rail by reciprocating along the vertical direction of the guide rail. A power transmission mechanism is provided between the rear support columns. The power transmission mechanism drives the rear limiting block to slide along the guide rail, so as to enable the automatic switching between horizontal placement and tilt angle of the shelf.

[0007] Optionally, guide rails are installed on the inner sides of the front and rear support columns opposite to each other by bolts; a limit block assembly is slidably connected to the guide rail, the limit block assembly includes a front limit block and a rear limit block, the front limit block is slidably engaged with the guide rail on the front support column, and the rear limit block is slidably engaged with the guide rail on the rear support column, the front limit block and the rear limit block can reciprocate along the vertical direction of the guide rail, providing a movable support base for the shelf.

[0008] Optionally, a left clearance hole and a right force transmission hole adapted to the size and shape of the transmission belt are vertically through the rear limit block; the left clearance hole provides clearance space during the operation of the transmission belt to prevent mutual interference; the right force transmission hole cooperates with the transmission belt, and when the transmission belt moves, it applies force to the rear limit block through the right force transmission hole to realize the transmission of force to drive the rear limit block to move.

[0009] Optionally, a shelf is installed between the front limit block and the rear limit block via a pin connection; the power transmission mechanism includes a drive motor and a drive shaft. The upper and lower sets of drive motors are axially movable via bearings, and a transmission belt is sleeved around the two drive shafts to complete the power transmission system and achieve synchronous operation of the power. When the drive motor starts, it drives the drive shaft to rotate, which in turn causes the transmission belt to circulate. The transmission belt, through its engagement with the right-side force transmission hole on the rear limit block, applies a force to the rear limit block, driving it to move upward. At this time, the shelf rotates with the front limit block as the center, realizing the switching action between horizontal placement and tilt angle.

[0010] Optionally, a fixing block is installed directly above the front support column using bolts, and a pushing rod is installed inside the fixing block with an interference fit; the drive motor is installed directly above the rear support column using bolts to provide a power source for the automated switching of the display rack; directly below the front and rear support columns, in a mirror-symmetrical layout with the above structure, a fixing block, a pushing rod, and a drive motor are also installed; several omnidirectional casters are installed directly below the front and rear support columns, directly below the fixing block and directly below the drive motor, using bolts.

[0011] Optionally, a lighting strip is installed at the bottom front of the shelf via a slot. A mounting groove is provided at the front of the shelf, and a blocking plate is installed in the mounting groove by a snap-fit ​​mechanism. When the shelf is tilted, the blocking plate can prevent the exhibits from sliding off. Extended mounting slots are provided at both ends of the shelf. When a single-sided extension device needs to be added, a fastening connecting plate is inserted into the extended mounting slot on the right side of the original shelf and the extended mounting slot on the left side of the new shelf to connect them. The new single-sided extension device includes a single front support column, a single rear support column and its matching guide rail, limit block assembly, fixing block, push rod, drive motor, drive shaft, transmission belt, and universal rollers. The connection relationship of each component is consistent with the corresponding component of the original display shelf.

[0012] In summary, this utility model offers at least one of the following advantages: 1. By bolting guide rails onto the inner surfaces of the front and rear support columns and installing a limit block assembly comprising a front limit block and a rear limit block that slides in cooperation with the corresponding guide rails, precise control of the shelf support point's movement is achieved. When the power transmission mechanism drives the rear limit block, the front limit block acts as a stable fulcrum, enabling the shelf to smoothly switch between horizontal and tilted states, meeting diverse display needs. This design not only provides stable and movable support for the shelf but also enhances the stability and reliability of the display rack during transitions between different display modes.

[0013] 2. By embedding a lighting strip in the bottom slot at the front of the shelf, attaching a blocking baffle, and setting extension mounting slots at both ends of the shelf, the design achieves the goals of enhancing the display effect, ensuring the safety of exhibits, and expanding display space. The lighting strip illuminates the exhibits to attract attention, the blocking baffle prevents exhibits from slipping when tilted, and the extension mounting slots can be used to connect additional single-sided extension devices when needed. This improves the functionality and adaptability of the display rack, meeting the needs of various display scenarios. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model at an inclined angle.

[0017] Figure 3 This is a schematic diagram of the overall extended structure of this utility model;

[0018] Figure 4 This is a detailed structural diagram of the limiting block assembly and the placement plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the rear support column and related components of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Front support column; 2. Rear support column; 3. Guide rail; 4. Rear limit block; 5. Power transmission mechanism; 6. Limit block assembly; 7. Front limit block; 8. Left clearance hole; 9. Right force transmission hole; 10. Shelf; 11. Drive motor; 12. Transmission belt; 13. Drive shaft; 14. Fixing block; 15. Push rod; 16. Universal roller; 17. Lighting strip; 18. Mounting groove; 19. Blocking baffle; 20. Extended mounting slot; 21. Fastening connection plate. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0022] Example 1, refer to Figure 1-5 In this embodiment, the present invention addresses the significant shortcomings of existing multi-purpose display racks. Traditional flat display racks have a single function, only allowing items to be laid flat for display. This is insufficient for scenarios requiring a strong display effect and to attract customer attention, failing to effectively enhance the attractiveness and display value of the items. While display racks with a certain tilt angle offer advantages in highlighting items and guiding the eye, their tilted design makes it extremely inconvenient to place irregularly shaped or unstable items, easily causing them to slip. This limits the range of applicable items and makes it difficult to meet diverse display needs. Therefore, this utility model discloses a multi-purpose display rack.

[0023] The display shelf includes front support columns 1 and rear support columns 2. Two symmetrically distributed front support columns 1 are located on the front side of the display shelf, and two symmetrically distributed rear support columns 2 are located on the rear side of the display shelf. The two front support columns 1 and the two rear support columns 2 are connected by bolts to form a stable rectangular support structure. A guide rail 3 is installed in front of the rear support column 2 by bolt fastening. A rear limit block 4 is movably installed on the guide rail 3 and is movably assembled on the guide rail 3 by sliding back and forth in the vertical direction of the guide rail 3. A power transmission mechanism 5 is set between the rear support columns 2. The power transmission mechanism 5 drives the rear limit block 4 to slide along the guide rail 3, so that the shelf 10 can automatically switch between horizontal placement and tilt angle. By connecting the two symmetrically distributed front support columns 1 on the front side of the display shelf and the two symmetrically distributed rear support columns 2 on the rear side of the display shelf with bolts, a stable rectangular support structure is built, providing a solid and stable support foundation for the display shelf. A guide rail 3 is installed directly in front of the rear support column 2 using bolts. A rear limiting block 4, which can slide back and forth along the vertical direction, is movably installed on the guide rail 3, providing a movable track for subsequent power transmission and the switching of the shelf 10's state. Simultaneously, a power transmission mechanism 5 is set between the rear support columns 2. This mechanism drives the rear limiting block 4 to slide along the guide rail 3, successfully enabling the shelf 10 to automatically switch between horizontal and tilted positions, meeting diverse display needs and enhancing the functionality and practicality of the display rack.

[0024] Guide rails 3 are bolted to the inner surfaces of the front support column 1 and the rear support column 2. Limiting block assemblies 6 are slidably connected to the guide rails 3. The limiting block assembly 6 includes a front limiting block 7 and a rear limiting block 4. The front limiting block 7 slides with the guide rail 3 on the front support column 1, and the rear limiting block 4 slides with the guide rail 3 on the rear support column 2. The front limiting block 7 and the rear limiting block 4 can reciprocate along the vertical direction of the guide rails 3, providing a movable support base for the shelf 10. By bolting the guide rails 3 to the inner surfaces of the front and rear support columns 2, and by allowing the front limiting block 7 in the limiting block assembly 6 to slide with the guide rail 3 of the front support column 1 and the rear limiting block 4 to slide with the guide rail 3 of the rear support column 2, the purpose of reciprocating sliding of the limiting blocks along the vertical direction of the guide rails 3 is achieved. When the height of the current display space varies, the position of the front limiting block 7 on the guide rail 3 can be flexibly adjusted to change its height, thus adapting to different spatial environments. At the same time, this design also provides a stable and movable support base for the shelf 10, allowing the shelf 10 to be flexibly adjusted in position and angle on the display shelf according to needs. This greatly improves the adaptability of the display shelf to different display methods and enhances its flexibility and convenience of use.

[0025] A left clearance hole 8 and a right force transmission hole 9, which are adapted to the size and shape of the transmission belt 12, are vertically through the rear limit block 4. The left clearance hole 8 provides clearance space during the operation of the transmission belt 12 to prevent mutual interference. The right force transmission hole 9 cooperates with the transmission belt 12. When the transmission belt 12 moves, it applies force to the rear limit block 4 through the right force transmission hole 9 to realize the transmission of force and drive the rear limit block 4 to move. By vertically opening the left clearance hole 8 and the right force transmission hole 9, which are adapted to the size and shape of the transmission belt 12, the purpose of optimizing the power transmission structure is achieved. The left clearance hole 8 provides ample clearance space when the transmission belt 12 is running, effectively preventing interference between the transmission belt 12 and the rear limit block 4, and ensuring the smooth operation of the transmission belt 12; the right force transmission hole 9 works closely with the transmission belt 12, and precisely applies force to the rear limit block 4 when the transmission belt 12 moves, realizing efficient force transmission, driving the rear limit block 4 to move smoothly, thereby ensuring the stable operation of the display rack power transmission system, enabling the shelf 10 to smoothly complete the automatic switching between horizontal and tilted states, and improving the overall functionality and stability of the display rack.

[0026] A shelf 10 is installed between the front limit block 7 and the rear limit block 4 via a pin connection. The power transmission mechanism 5 includes a drive motor 11 and a drive shaft 13. The upper and lower drive motors 11 are axially mounted on the drive shaft 13 via bearings. A transmission belt 12 is sleeved around the two drive shafts 13, thus completing the power transmission system and achieving synchronous operation of the power. When the drive motor 11 starts, it drives the drive shaft 13 to rotate, which in turn causes the transmission belt 12 to rotate cyclically. The transmission belt 12, through its cooperation with the right force transmission hole 9 on the rear limit block 4, applies a force to the rear limit block 4, driving the rear limit block 4 to move upward. At this time, the shelf 10 is rotated with the front limit block 7 as the center, realizing the switching action between horizontal placement and tilt angle. By installing the shelf 10 between the front limit block 7 and the rear limit block 4 via a pin connection and constructing a power transmission system including the drive motor 11, belt 12, drive shaft 13 and bearings, the purpose of automatically switching the state of the shelf 10 is achieved. Specifically, the upper and lower sets of drive motors 11 are axially mounted on the drive shafts 13 using bearings. The transmission belts 12 surrounding the two drive shafts 13 ensure synchronous operation of the power. When the drive motors 11 start, the drive shafts 13 drive the transmission belts 12 to rotate cyclically. The transmission belts 12 cooperate with the right-side force transmission hole 9 on the rear limit block 4 to precisely apply force to the rear limit block 4, causing it to move upward. Centered on the front limit block 7, this drives the shelf 10 to rotate, realizing the flexible switching between horizontal placement and tilt angle of the shelf 10. This greatly improves the automation level and ease of use of the display rack, meeting diverse display needs.

[0027] A fixing block 14 is bolted to the top of the front support column 1. A push rod 15 is installed inside the fixing block 14 with an interference fit. A drive motor 11 is bolted to the top of the rear support column 2, providing power for the automated switching of the display rack. Below the front and rear support columns 1 and 2, in a mirror-symmetrical arrangement with the upper structure, are also fixed blocks 14, push rods 15, and drive motors 11. Several omnidirectional casters 16 are bolted to the bottom of the fixing blocks 14 and drive motors 11. By bolting the fixing blocks 14 to the top of the front and rear support columns 2, and installing the push rods 15 inside the fixing blocks 14 with an interference fit, while simultaneously bolting the drive motor 11 to the top of the rear support column 2, the purpose of constructing the power source and related auxiliary structures for the automated switching of the display rack is achieved. The fixing blocks 14 and push rods 15 in the upper structure assist in power transmission and maintain structural stability. The fixed blocks 14, pushing rods 15, and drive motors 11, which are installed in a mirror-symmetrical arrangement directly below the front and rear support columns 2, further enhance the stability and synchronization of power transmission. In addition, several omnidirectional casters 16 are installed directly below the fixed blocks 14 and drive motors 11 via bolts, enabling the display rack to move easily on a horizontal plane. This allows for flexible repositioning of the display rack, improving its usability and adaptability to different scenarios, and meeting the diverse needs of the display rack in various environments.

[0028] A lighting strip 17 is installed at the bottom front of the shelf 10 via a slot. A mounting groove 18 is provided at the front of the shelf 10, and a blocking plate 19 is installed in the mounting groove 18 via a snap-fit ​​mechanism. When the shelf 10 is tilted, the blocking plate 19 can prevent exhibits from sliding off. Extended mounting slots 20 are provided at both ends of the shelf 10. When it is necessary to add a single-sided extension device, the fastening connecting plate 21 is inserted into the extended mounting slot 20 on the right side of the original shelf 10 and the extended mounting slot 20 on the left side of the newly added shelf 10. The newly added single-sided expansion device includes a single front support column 1, a single rear support column 2, and their matching guide rails 3, limiting block assembly 6, fixing block 14, pushing rod 15, drive motor 11, drive shaft 13, transmission belt 12, and universal rollers 16. The connection relationship of each component is consistent with the corresponding components of the original display rack. By installing a lighting strip 17 in a slotted manner at the bottom front of the shelf 10, the purpose of enhancing the display effect is achieved. The lighting strip 17 can illuminate the exhibits on the shelf 10 and attract the attention of the audience. A mounting groove 18 is opened at the front of the shelf 10, and a blocking baffle 19 is installed in a snap-fit ​​manner, which effectively prevents the exhibits from sliding off when the shelf 10 is tilted, ensuring the safety of the exhibit display. At the same time, expansion mounting slots 20 are set at both ends of the shelf 10. When it is necessary to add a single-sided expansion device, the display space can be expanded by inserting the fastening connecting plate 21 into the original expansion mounting slot 20 corresponding to the new shelf 10. The newly added single-sided extension device includes various components with the same connection relationship as the original display rack, such as a single front and rear support column 2 and its matching structure, which improves the expandability and adaptability of the display rack and can be flexibly adjusted according to different display needs to meet diverse display scenarios.

[0029] The specific working principle is as follows: Guide rails 3 are bolted to the inner sides of the front and rear support columns 2, and a limiting block assembly 6, including a front limiting block 7 and a rear limiting block 4, slides and engages with the corresponding guide rails 3, achieving precise control over the movement of the support points of the shelf 10. When the power transmission mechanism 5 drives the rear limiting block 4, the front limiting block 7 acts as a stable fulcrum, enabling the shelf 10 to smoothly switch between horizontal and tilted states, meeting diverse display needs. This design not only provides stable and movable support for the shelf 10 but also enhances the stability and reliability of the display rack when switching between different display modes. By embedding a lighting strip 17 in the slot at the bottom front of the shelf 10, engaging a blocking baffle 19, and setting extension mounting slots 20 at both ends of the shelf 10, the design achieves the goals of enhancing the display effect, ensuring the safety of exhibits, and expanding display space. The lighting strip 17 illuminates the exhibits to attract attention, the blocking baffle 19 prevents exhibits from slipping when tilted, and the extension mounting slots 20 can be used to connect additional single-sided extension devices when needed. This enhances the functionality and adaptability of the display racks to various display scenarios, meeting the needs of different display environments.

[0030] Mode switching and size coordination adjustment mechanism: When the drive motor 11 is started, the rotation of the motor output shaft drives the drive shaft 13, which in turn causes the transmission belt 12 sleeved on the drive shaft 13 to circulate. The rear limit block 4 is tightly coupled to the transmission belt 12 through its right force transmission hole 9. During operation, the transmission belt 12 applies a driving force to the rear limit block 4, pushing the rear limit block 4 to slide vertically upward along the guide rail 3. It is worth noting that when the display rack is in a horizontal state, the plane on which the shelf 10 is located has a larger size, while the size is correspondingly reduced when it is switched to an inclined state. During this process, the fixed block 14, which is fastened to the front support column 1 by bolts, plays an indispensable role, and the push rod 15 installed inside it with an interference fit plays an indispensable role. As the rear limit block 4 drives the shelf 10 to rotate around the pin shaft, the push rod 15 adaptively shortens its length according to the needs of the shelf 10 size change. This adjustment provides a precisely tailored auxiliary thrust for the shelf 10 during tilting, ensuring a smooth and stable transition from a horizontal to a tilted position. When the display rack needs to be switched back from tilt to horizontal mode, the drive motor 11 reverses its direction, and the transmission belt 12 drives the rear limit block 4 downward. At this time, the push rod 15 gradually extends, providing a reverse auxiliary force to help the shelf 10 return to a horizontal position precisely and smoothly. In this way, the display rack can flexibly and efficiently adjust the state and size of the shelf 10 according to different display needs.

[0031] The wiring diagrams of the drive motor 11 and the push rod 15 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring arrangement of the drive motor 11 and the push rod 15 will not be explained in detail.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multi-purpose display rack, comprising front support columns (1) and rear support columns (2), wherein two symmetrically distributed front support columns (1) are located on the front side of the display rack, and two symmetrically distributed rear support columns (2) are located on the rear side of the display rack, characterized in that: Two front support columns (1) and two rear support columns (2) are connected by bolts to form a stable rectangular support structure; a guide rail (3) is installed in front of the rear support column (2) by bolt fastening, and a rear limit block (4) is movably installed on the guide rail (3) and is movably assembled on the guide rail (3) by sliding back and forth in the vertical direction of the guide rail (3); a power transmission mechanism (5) is provided between the rear support columns (2), and the rear limit block (4) is driven to slide along the guide rail (3) by means of the power transmission mechanism (5), so that the shelf (10) can automatically switch between horizontal placement and tilt angle state.

2. The multi-purpose display rack according to claim 1, characterized in that: The inner sides of the front support column (1) and the rear support column (2) are fastened with bolts to install guide rails (3); the guide rails (3) are slidably connected to limit block assemblies (6), the limit block assemblies (6) include a front limit block (7) and a rear limit block (4), the front limit block (7) is slidably engaged with the guide rail (3) on the front support column (1), and the rear limit block (4) is slidably engaged with the guide rail (3) on the rear support column (2). The front limit block (7) and the rear limit block (4) can slide back and forth along the vertical direction of the guide rail (3) to provide a movable support base for the shelf (10).

3. The multi-purpose display rack according to claim 1, characterized in that: The rear limiting block (4) has a left clearance hole (8) and a right force transmission hole (9) that are adapted to the size and shape of the transmission belt (12) through a vertical through hole. The left clearance hole (8) provides clearance space during the operation of the transmission belt (12) to prevent mutual interference. The right force transmission hole (9) cooperates with the transmission belt (12). When the transmission belt (12) moves, it applies force to the rear limiting block (4) through the right force transmission hole (9) to realize the transmission of force to drive the rear limiting block (4) to move.

4. A multi-purpose display rack according to claim 2, characterized in that: The front limiting block (7) and the rear limiting block (4) are connected by a pin to install a shelf (10); the power transmission mechanism (5) includes a drive motor (11) and a drive shaft (13). The upper and lower sets of drive motors (11) are connected by bearings to enable the axial movement of the drive shaft (13). The two drive shafts (13) are fitted with transmission belts (12) to complete the power transmission system and achieve synchronous operation of the power. When the drive motor (11) starts, it drives the drive shaft (13) to rotate, which in turn causes the transmission belt (12) to circulate. The transmission belt (12) cooperates with the right force transmission hole (9) on the rear limiting block (4) to apply force to the rear limiting block (4) and drive the rear limiting block (4) to move upward. At this time, the shelf (10) is rotated with the front limiting block (7) as the center, realizing the switching action between horizontal placement and tilt angle.

5. A multi-purpose display rack according to claim 4, characterized in that: A fixing block (14) is installed directly above the front support column (1) by bolt fastening. A push rod (15) is installed inside the fixing block (14) with an interference fit. The drive motor (11) is installed directly above the rear support column (2) by bolt fastening to provide a power source for the automatic switching of the display rack. The front support column (1) and the rear support column (2) are mirror-symmetrically arranged with the structure above, and a fixing block (14), a push rod (15) and a drive motor (11) are also installed. Several universal rollers (16) are installed directly below the front support column (1) and the rear support column (2), directly below the fixing block (14) and the drive motor (11) by bolt fastening.

6. A multi-purpose display rack according to claim 1, characterized in that: A lighting strip (17) is installed at the bottom front of the shelf (10) by means of a slot. An installation groove (18) is opened at the front of the shelf (10), and a blocking plate (19) is installed in the installation groove (18) by means of a snap-fit. When the shelf (10) is tilted, the blocking plate (19) can prevent the exhibits from sliding off. The shelf (10) is provided with expansion installation grooves (20) at both ends. When it is necessary to add a single-sided expansion device, the fastening connecting plate (21) is inserted into the original. The expansion mounting slot (20) on the right side of the existing shelf (10) is connected to the expansion mounting slot (20) on the left side of the newly added shelf (10). The newly added single-sided expansion device includes a single front support column (1), a single rear support column (2) and its matching guide rail (3), limit block assembly (6), fixing block (14), push rod (15), drive motor (11), drive shaft (13), transmission belt (12), and universal roller (16). The connection relationship of each component is consistent with the corresponding component of the original display shelf.

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