A rotatable bookshelf

Abstract

This utility model discloses a rotatable bookshelf, relating to the field of bookshelf technology. It includes a tubular support column with a base rotatably connected to its lower end. Multiple mounting plates are arrayed on the sidewalls of the support column, and wedge-shaped grooves are symmetrically arranged on both ends of the mounting plates. Multiple placement frames with upper and lower contact are provided at both ends of the mounting plates, and wedge-shaped blocks corresponding to the wedge-shaped grooves are provided on the sidewalls of the placement frames. A lifting column is located inside the support column, with an external thread at its lower end, which is threaded to an internal thread on the inner wall of the support column. A clamping seat is rotatably connected to the upper end of the lifting column, and limiting strips are symmetrically arranged on the sidewalls of the lifting column. This utility model requires no tools for assembly and disassembly, is simple to operate, and its multiple structural components work together to ensure stability and safety during use.

Description

Technical Field

[0001] This utility model relates to the field of bookshelf technology, specifically a rotatable bookshelf. Background Technology

[0002] Bookshelves are containers used specifically to store books. Due to differences in shape and structure, bookshelves have various names such as bookcases, book cabinets, and book dividers. Bookshelves are common items in our lives.

[0003] Traditional bookshelves currently on the market generally suffer from the following problems, making it difficult to meet the needs for flexible use and space adaptation: 1. Cumbersome disassembly and adjustment: The shelves or frames for placing books are mostly fixed with screws and other fasteners. Disassembly and assembly require tools, and it is difficult to flexibly increase or decrease the number of shelves according to the height of the books. The adjustment process is time-consuming and laborious. 2. Poor stability: Some rotatable bookshelves lack an effective fixing structure, and are prone to vibration or shaking due to centrifugal force when rotating, and may even tip over; and after long-term use, the adjusting parts are prone to loosening, further reducing stability. Utility Model Content

[0004] The purpose of this invention is to provide a rotatable bookshelf to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotatable bookshelf, comprising a tubular support column, wherein a base is rotatably connected to the lower end of the support column, and multiple mounting plates are arrayed on the side wall of the support column, and wedge-shaped grooves are symmetrically provided on the side walls at both ends of the mounting plates. Both ends of the mounting plate are provided with multiple placement frames that are in contact with each other, and the side walls of the placement frames are provided with wedge blocks that are corresponding to the wedge grooves. The support column is equipped with a lifting column inside. The lower end of the lifting column is provided with an external thread, which is threaded to the internal thread provided on the inner wall of the support column. The upper end of the lifting column is rotatably connected with a top clamping seat. The side wall of the lifting column is symmetrically provided with limiting strips. A rotating sleeve is movably fitted on the lifting column, and a limiting groove is symmetrically provided on the inner wall of the rotating sleeve. The limiting strip is correspondingly engaged in the limiting groove.

[0006] Preferably, the outer sidewall of the placement frame is provided with an identification area.

[0007] Preferably, the lower end of the base is provided with a first shock-absorbing pad, and the upper end of the top clamping seat is provided with a second shock-absorbing pad.

[0008] Preferably, the lower end of the rotating sleeve is provided with a locking tooth portion, and the upper end of the support column is provided with a toothed groove portion, and the locking tooth portion is correspondingly locked in the toothed groove portion.

[0009] Preferably, the outer diameter of the rotating sleeve is equal to the outer diameter of the support column.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Tool-free assembly and disassembly + flexible adjustment: This utility model uses a "wedge block-wedge groove" interlocking structure between the placement frame and the mounting plate, eliminating the need for screws or other fasteners. Assembly and disassembly can be completed simply by inserting and pulling along the wedge groove direction. 2. Multiple structural synergy ensures stability and safety: This invention uses a first shock-absorbing pad at the bottom of the base to buffer ground vibrations, and a second shock-absorbing pad at the top of the top seat to reduce hard contact with the ceiling. This dual shock absorption effectively reduces the shaking caused by centrifugal force when the bookshelf rotates, preventing books from tipping over. The locking teeth at the bottom of the rotating sleeve can engage with the toothed grooves at the top of the support column, locking the relative rotation of the lifting column and the support column, preventing the threaded connection from loosening after long-term use and avoiding structural displacement. After the lifting column is adjusted in height, the top seat presses against the ceiling and the base supports the ground, forming a "two-way fixed" structure. Compared with traditional bookshelves that rely solely on the base for support, the anti-tipping ability is significantly improved. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the rotating sleeve structure of this utility model.

[0012] In the diagram: 1. Support column; 11. Base; 111. First shock absorber; 12. Mounting plate; 121. Wedge groove; 13. Toothed part; 2. Placement frame; 21. Wedge block; 22. Identification area; 3. Lifting column; 31. External thread part; 32. Tightening seat; 33. Second shock absorber; 34. Limiting strip; 4. Rotating sleeve; 41. Clamping tooth part; 42. Limiting groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5 The present invention provides a technical solution: a rotatable bookshelf, including a tubular structure support column 1, and a base 11 rotatably connected to the lower end of the support column 1. Multiple mounting plates 12 are arrayed on the side wall of the support column 1, and wedge-shaped grooves 121 are symmetrically provided on the side walls at both ends of the mounting plates 12. Both ends of the mounting plate 12 are provided with multiple placement frames 2 that are in contact with each other, and the side wall of the placement frame 2 is provided with a wedge block 21 that is correspondingly locked on the wedge groove 121. The support column 1 is equipped with a lifting column 3 inside. The lower end of the lifting column 3 is provided with an external thread 31. The external thread 31 is threadedly connected to the internal thread provided on the inner wall of the support column 1. The upper end of the lifting column 3 is rotatably connected with a top seat 32. The side wall of the lifting column 3 is symmetrically provided with limit strips 34. A rotating sleeve 4 is movably fitted on the lifting column 3. The inner wall of the rotating sleeve 4 is symmetrically provided with limiting grooves 42, and the limiting strip 34 is correspondingly locked on the limiting grooves 42.

[0015] Furthermore, a labeling area 22 is provided on the outer side wall of the placement box 2. The labeling area 22 makes it easy to label the type or category of books in each placement box 2, so that readers can quickly find them.

[0016] Furthermore, a first shock-absorbing pad 111 is provided at the lower end of the base 11, and a second shock-absorbing pad 33 is provided at the upper end of the top seat 32. By setting the first shock-absorbing pad 111 and the second shock-absorbing pad 33, with the first shock-absorbing pad 111 supporting the ground and the second shock-absorbing pad 33 pressing against the ceiling, the vibration caused by centrifugal force when the bookshelf rotates is reduced, ensuring the overall stability of the bookshelf.

[0017] Furthermore, the lower end of the rotating sleeve 4 is provided with a retaining tooth 41, and the upper end of the support column 1 is provided with a toothed groove 13. The retaining tooth 41 is correspondingly engaged within the toothed groove 13. By engaging the retaining tooth 41 and the toothed groove 13, the lifting column 3 can be easily engaged at its threaded height within the support column 1. After the lifting column 3 is positioned at its threaded height, the retaining tooth 41 is inserted into the toothed groove 13 to lock the threaded connection between the lifting column 3 and the support column 1, preventing the threaded connection from loosening and ensuring the overall stability of the bookshelf.

[0018] Furthermore, the outer diameter of the rotating sleeve 4 is equal to the outer diameter of the support column 1. The locking teeth 41 are correspondingly locked in the toothed groove 13, and the rotating sleeve 4 is correspondingly mounted on the upper end of the support column 1, so as to facilitate upward pulling and disassembly and assembly of the bookshelf as a whole. The operation is simple, and the bookshelf as a whole can be assembled without tools.

[0019] Specifically, first, install the placement frame 2, which is used to support books. The core of its cooperation with the mounting plate 12 is the interlocking structure of the wedge block 21 and the wedge groove 121. Each mounting plate 12 has symmetrical wedge grooves 121 on both side walls, and the corresponding side wall of the placement frame 2 has a wedge block 21. Align the wedge block 21 of the placement frame with the wedge groove 121 of the mounting plate and insert it to achieve lateral fixation of the placement frame. Multiple placement frames 2 can be stacked vertically along the mounting plate 12 and contact each other vertically without additional fasteners. Moreover, during disassembly and assembly, it is only necessary to insert and remove along the direction of the wedge groove 121, which makes it convenient to adjust the number of layers according to the height of the books. Furthermore, the bookshelf achieves height adaptation and structural stability through the threaded adjustment of the lifting column 3 and the locking of the rotating sleeve 4. Since the lifting column 3 is located inside the support column 1, its lower external thread 31 engages with the internal thread of the inner wall of the support column 1. When the lifting column 3 is rotated by the rotating sleeve 4, the external thread 31 moves up and down along the internal thread, driving the lifting column 3 to rise and fall as a whole. The top clamping seat 32 at the upper end of the lifting column 3 moves accordingly until it clamps the ceiling (the top clamping seat 32 has a second shock-absorbing pad 33 at its upper end to reduce vibration). At this time, the base 11 supports the ground and the top clamping seat 32 supports the ceiling, forming a "fixed top and bottom" structure to prevent the bookshelf from tipping over. Furthermore, the rotating sleeve 4 is movably fitted onto the lifting column 3, and the limiting groove 42 on its inner wall engages with the limiting strip 34 on the side wall of the lifting column, ensuring that the rotating sleeve 4 can move up and down with the lifting column, but cannot rotate relative to the lifting column 3; after the height of the lifting column 3 is adjusted, the rotating sleeve 4 is pressed down, so that the locking tooth 41 at its lower end engages with the tooth groove 13 at the upper end of the support column 1; the engagement of the locking tooth and the tooth groove locks the relative rotation of the lifting column 3 and the support column 1, preventing the threaded connection from loosening due to vibration, and further ensuring the stability of the structure. When the bookshelf is rotated, it is achieved through the rotational connection between the support column 1 and the base 11 and the rotational connection between the lifting column 3 and the top clamping seat 32; The bookshelf's overall design requires no additional tools, relying on a detachable structure of "clamping + threads," which can be easily disassembled by simply manipulating the direction.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable bookshelf, comprising a tubular support column (1), wherein a base (11) is rotatably connected to the lower end of the support column (1), characterized in that: Multiple mounting plates (12) are arrayed on the side wall of the support column (1), and wedge-shaped grooves (121) are symmetrically provided on the side walls at both ends of the mounting plates (12). Both ends of the mounting plate (12) are provided with multiple placement frames (2) that are in contact with each other, and the side wall of the placement frame (2) is provided with a wedge block (21) that is corresponding to the wedge groove (121). The support column (1) is provided with a lifting column (3) inside. The lower end of the lifting column (3) is provided with an external thread (31). The external thread (31) is threadedly connected to the internal thread provided on the inner wall of the support column (1). The upper end of the lifting column (3) is rotatably connected with a top seat (32). The side wall of the lifting column (3) is symmetrically provided with limit strips (34). The lifting column (3) is movably fitted with a rotating sleeve (4), and the inner wall of the rotating sleeve (4) is symmetrically provided with a limiting groove (42), and the limiting strip (34) is correspondingly locked on the limiting groove (42).

2. A rotatable bookshelf according to claim 1, characterized in that: The outer sidewall of the placement frame (2) is provided with an identification area (22).

3. A rotatable bookshelf according to claim 1, characterized in that: The base (11) is provided with a first shock-absorbing pad (111) at its lower end, and the top seat (32) is provided with a second shock-absorbing pad (33) at its upper end.

4. A rotatable bookshelf according to claim 1, characterized in that: The lower end of the rotating sleeve (4) is provided with a toothed part (41), and the upper end of the support column (1) is provided with a toothed groove (13). The toothed part (41) is correspondingly locked in the toothed groove (13).

5. A rotatable bookshelf according to claim 1, characterized in that: The outer diameter of the rotating sleeve (4) is equal to the outer diameter of the support column (1).

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