Multi-functional student bookshelf

Abstract

The application discloses a multifunctional student book cabinet, which is provided with a book cabinet body placed on the ground and comprises a moving rod, a screw rod and a base. The moving rod is screw-connected to the inner surface of the book cabinet body and has an outer surface rotationally connected with a connecting rod. The connecting rod is nested on the inner wall of the book cabinet body, and the inner surface of the book cabinet body is connected with the base. The screw rod is rotationally connected to the inner surface of the base. The multifunctional student book cabinet is provided with a movable retractable and rotatable turnover cover. The cooperation of the moving rod and the connecting rod can effectively control the positioning rotation of the turnover cover under the nesting of the limiting shaft and improve the stability of the turnover cover during use. The base can be positioned and used, and the rotation between the base and the cabinet door and the rotation of the cabinet door and the positioning assembly can effectively control the turnover of the cabinet door to form a desktop for use.

Description

Technical Field

[0001] This invention relates to the field of student bookcase technology, specifically a multifunctional student bookcase. Background Technology

[0002] Student bookshelves can be used in schools, homes, and study rooms to store students' books and study materials. When used at home, independent student bookshelves can be set up to store books and student supplies, and can be used with assembled foldable cabinet panels to form a desktop. However, existing student bookshelves still have some problems in use.

[0003] In the prior art, the authorized publication (announcement) number: CN107028380A, "A Multifunctional New Type of Student Bookshelf", includes casters, a lower bookshelf, a combination lock, a handle, a cabinet door, a hinge, a first partition, a slot, an upper bookshelf, a second partition, a third partition, a cabinet body, a tabletop, a support rod, hooks, and ventilation holes. The first partition divides the cabinet body into an upper bookshelf and a lower bookshelf. The lower bookshelf has a cabinet door on one side, which is connected to the first partition by a hinge. The upper bookshelf is divided into an upper bookshelf and a lower bookshelf by the second partition. The lower end of both the upper and lower bookshelves has multiple slots, and the third partition is fitted inside the slots. The third partition divides the upper and lower bookshelves into multiple book storage spaces.

[0004] During the operation of the above-mentioned device, a table is connected to one side of the cabinet via a hinge, and a support rod is connected to the bottom of the table via a hinge. The cabinet is divided into an upper bookcase and a lower bookcase by the first partition. The upper bookcase can be used to store frequently used books, and the lower bookcase can be used to store some less frequently used books. However, when in use, the flip structure is designed so that the tabletop is prone to tilting after flipping, resulting in insufficient stability during use. Moreover, when stored next to the bookcase, it is very easy to occupy too much space and affect the overall use effect.

[0005] In the prior art, the patent publication (announcement) number CN204192014U describes a "multifunctional student cabinet" which includes a cabinet body. The lower part of the cabinet body has two drawers, and the upper part of the cabinet body has a cabinet door. The bottom of the cabinet door has a bookshelf section, and the upper part has a clothes hanging rod. Two parallel support rods are provided on both sides of the cabinet body. The support rods are provided with sleeves that can slide up and down. One end of the plate is hinged to the sleeve, and the other end of the plate is hinged to a retractable leg. It has multiple functions such as a bookshelf and a dining table, is convenient to use, and occupies little space.

[0006] In the prior art, the patent publication (announcement) number CN211795120U, entitled "A Multifunctional Combination Bookcase for Students", includes a main body, a fixed plate, and an adjustment device. The main body is a box structure with an open front end and first square holes symmetrically arranged in the middle of the left and right ends. A fixed plate is fixed to the middle of the inner wall of the left side of the main body. The fixed plate has a second square hole that communicates with the first square hole and is of a suitable size. Two sliding grooves are provided on the upper left side of the main body. An opening groove is provided on the left side of the bottom plate of the main body. The adjustment device consists of a first adjustment plate, an L-shaped support plate, a groove, a rotating shaft, a second adjustment plate, and a slider.

[0007] During the operation of the above-mentioned device, the structural design is reasonable. By changing the length and positional relationship between the first adjustment plate, the second adjustment plate, and the fixed plate, a dual-purpose combination structure of reading stand and bookcase is realized. It can adjust the reading angle and increase storage space, and has good prospects for promotion. However, when the reading structure is not in use, the storage space is relatively short and affects the usable space inside the bookcase. Summary of the Invention

[0008] The purpose of this invention is to provide a multifunctional student bookcase to solve the problems mentioned in the background art, such as the flip structure that is prone to causing the desktop to tilt after flipping, resulting in insufficient stability during use, and when stored next to the bookcase, it can easily cause excessive space occupation and affect the overall use effect, and when the reading structure is not in use, the storage space is too short and affects the usable space inside the bookcase.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional student bookcase, comprising a bookcase body placed on the ground;

[0010] Includes: a movable rod, threadedly connected to the upper side of the inner surface of the bookcase body, and a connecting rod rotatably connected to the outer surface of the movable rod, and the connecting rod is nested in the inner wall of the bookcase body, and a base is connected to the inner surface of the bookcase body;

[0011] A lead screw is rotatably connected to the inner surface of the base, and a moving block is threadedly connected to the outer surface of the lead screw. A cabinet door is rotatably connected to the upper surface of the base, and a positioning component is rotatably connected to the outer surface of the cabinet door. A positioning shaft is rotatably connected to the lower side of the inner surface of the positioning component, and the positioning shaft is nested on the inner surface of the bookcase body.

[0012] A nested block is installed on the upper side of the inner surface of the positioning component, and a locking block is engaged with the inner surface of the nested block, and a return spring is attached to the lower surface of the locking block, which extends and retracts to the inner surface of the bookcase body.

[0013] A rack is installed on the rear side of the outer surface of the positioning component, and a limit strip is installed on the side of the outer surface of the rack, which limits the sliding of the limit strip on the inner wall of the bookcase body. A roller is connected to the lower surface of the rack, and a worm gear is engaged with the front side of the upper surface of the rack. A worm gear is engaged with the rear side of the outer surface of the worm gear. A support block is connected to the lower rear side of the outer surface of the positioning component, and the support block is installed on the lower inner surface of the bookcase body.

[0014] The support leg is rotatably connected to the inner surface of the cabinet door, and the inner surface of the cabinet door is rotatably connected to a telescopic component. A compression spring is nested on the inner surface of the telescopic component, and a telescopic rod is connected to the other side of the compression spring. The telescopic rod is telescopically assembled inside the telescopic component, and the outer surface of the telescopic rod is rotatably connected to the inner surface of the support leg. Thus, the drawer is telescopically assembled on the inner surface of the bookcase body.

[0015] Preferably, the moving rod and the bookcase body form a threaded adjustment limiting movement structure, and the moving rod and the connecting rod form a rotation structure, and the connecting rod and the bookcase body form a built-in compression structure. At the same time, the connecting rod is symmetrically arranged about the middle section of the inner surface of the bookcase body. The other end of the outer surface of the connecting rod is rotatably connected to a flip cover, and the outer surface of the flip cover is connected to a compression plate. A tension spring is nested between the flip cover and the compression plate, and a limiting shaft is nested and rotatably connected to the inner surface between the flip cover and the compression plate.

[0016] The above structure allows for stable control of the position of the moving rod during use, and the angle of the flip cover can be adjusted in conjunction with the connecting rod, thereby controlling the dust protection of the top of the bookcase.

[0017] Preferably, the flip cover and the connecting rod are connected by an off-axis for rotation, and the flip cover forms a rotating structure with the extrusion plate through a tension spring. The flip cover and the extrusion plate form a nested rotating structure with the limiting shaft, and the shape between the flip cover and the extrusion plate is an "R" shape.

[0018] The above structure effectively controls the stability of the flip cover during use, enabling movement and positioning rotation, thus improving the stability of the flip cover.

[0019] Preferably, the base forms a rotating structure through a lead screw and a moving block, and the outer surface of the lead screw has a bidirectional helical structure. The base and the cabinet door form a rotating structure, while the cabinet door and the positioning component form a rotating structure.

[0020] With the above structure, the angle of the base on the cabinet door can be effectively controlled during use, and when the base needs to be positioned, the moving block can be controlled to move horizontally, effectively adjusting the stability of the device.

[0021] Preferably, a moving shaft is installed on the outer surface of the moving block, and a locking device is nested on the outer surface of the moving shaft. A moving groove is also opened on the inner surface of the locking device, which limits the sliding of the moving shaft inside the moving groove. At the same time, a locking slot opened on the bookcase body is engaged with the lower surface of the locking device.

[0022] The above structure facilitates stable installation during use, preventing detachment, and, in conjunction with the assembly slots, limits and positions the base and the bookcase body during assembly.

[0023] Preferably, the card is connected to the moving block via a moving shaft and a moving groove to form a sliding rotation structure, and the card is connected to the base via a shaft to form a positioning rotation. The outer surface of the card is L-shaped, and the card is connected to the bookcase body via a card groove to form a limiting engagement structure.

[0024] The above structure effectively controls the angle of the clips during use, as well as the stability of the connection between the clips and the bookcase body, and prevents the clips from tilting and being damaged when flipped or moved.

[0025] Preferably, the positioning component forms a positioning rotation structure with the bookcase body through the positioning shaft, and the positioning component and the nesting block form an integrated structure, and the nesting block and the bookcase body form an internal nesting structure. At the same time, the bookcase body forms a limiting engagement structure with the nesting block through the return spring and the locking block.

[0026] With the above structure, the rotation between the positioning component and the cabinet door is controlled during use. Thus, the positioning component can cooperate with the base of the cabinet door assembly. The angle of the cabinet door, positioning component and bookcase body can be controlled by the use of the positioning shaft. When it is not necessary to adjust the angle of the cabinet door and positioning component, it can cooperate with the locking block to form an effective engagement.

[0027] Preferably, the rack is embedded in the rear side of the outer surface of the positioning component, and the positioning component forms a rotating structure linked with the rack, worm gear and worm wheel. The rack forms a limiting movement structure with the bookcase body through the limiting strip and roller. At the same time, the positioning component forms a limiting compression structure with the bookcase body through the support block.

[0028] The above structure enables effective and stable positioning and installation during use. The linkage rotation between the rack, worm gear, and gear controls the stability of the positioning component's rotation, and the support block increases the support force after rotation.

[0029] Preferably, the support leg and the cabinet door form a nested rotating structure, and the cabinet door and the telescopic component form a positioning rotating structure. The telescopic component forms an elastic telescopic structure with the telescopic rod through the compression spring. At the same time, the support leg forms a linkage rotating structure with the cabinet door through the telescopic component and the telescopic rod, and can form a stable supporting triangular structure.

[0030] The above structure facilitates the rotation of the cabinet door and positioning components during use, thereby controlling the support legs to disengage from the cabinet door. It also allows for the elastic adjustment between the telescopic components and the telescopic rod, controlling the stability of the cabinet door when it is used as a tabletop.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. This multifunctional student bookcase is equipped with a movable, retractable, and rotatable flip cover. With the cooperation of the moving rod and the connecting rod, the flip cover is effectively controlled to rotate in a fixed position under the nesting of the limiting shaft. When the flip cover rotates, the compression between the connecting rod and the bookcase body, as well as the limiting extension and retraction of the moving rod, improves the stability of the flip cover during use. Through the positioning base, the rotation between the base and the cabinet door, and the rotation between the cabinet door and the positioning component, the cabinet door can be effectively controlled to flip to form a desktop.

[0033] 2. This multifunctional student bookcase features a flip-top cover that can be connected to a compression plate via an assembled tension spring. The rotation between the compression plate and the flip-top cover effectively nests and unlocks the flip-top cover on a limiting shaft, limiting its movement. Combined with the limiting assembly between the bookcase body and the base, it can connect to the cabinet door in the non-limited state, allowing the door to be rotated to remove books. In the limited state, it can control the rotation between the cabinet door and the base, and control the synchronous rotation of the positioning components assembled on the cabinet door. With the adjustment of the support legs, it effectively controls the cabinet door to form a desktop and improves the working stability of the cabinet door.

[0034] 3. This multifunctional student bookcase is equipped with a flip-up positioning component, which, in conjunction with the positioning shaft, effectively controls the bottom positioning of the cabinet door to flip. When the cabinet door flips, the engagement between the assembled rack and worm gear effectively controls the stability of the cabinet door during flipping. Furthermore, the upper end of the positioning component, in conjunction with the use of a locking block, a return spring, and a nesting block, effectively controls the positioning of the top of the cabinet door. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the bookcase body of the present invention;

[0036] Figure 2 This is a schematic diagram of the three-dimensional structure of the bookcase body of the present invention (half-section view);

[0037] Figure 3 This is a partial cross-sectional perspective view of the three-dimensional structure of the flip-top cover of the present invention;

[0038] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the cabinet door of the present invention;

[0039] Figure 5 For the present invention Figure 4Enlarged 3D structural diagram at point A in the middle;

[0040] Figure 6 For the present invention Figure 4 Enlarged 3D structural diagram at point B;

[0041] Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the rack of the present invention;

[0042] Figure 8 This is a partial cross-sectional three-dimensional structural diagram of the support leg of the present invention.

[0043] In the diagram: 1. Bookcase body; 2. Moving rod; 3. Connecting rod; 301. Flip-top cover; 302. Extrusion plate; 303. Tension spring; 304. Limiting shaft; 4. Base; 5. Lead screw; 6. Moving block; 601. Moving shaft; 602. Clip; 603. Moving groove; 604. Slot; 7. Cabinet door; 8. Positioning assembly; 9. Positioning shaft; 10. Nesting block; 11. Clip; 12. Return spring; 13. Rack; 14. Limiting strip; 15. Roller; 16. Turbine; 17. Worm gear; 18. Support block; 19. Support leg; 20. Telescopic assembly; 21. Extrusion spring; 22. Telescopic rod; 23. Drawer. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1-7 The present invention provides a technical solution: a multifunctional student bookcase, which is provided with a bookcase body 1 placed on the ground;

[0046] Includes: a movable rod 2, which is threaded to the upper side of the inner surface of the bookcase body 1, and a connecting rod 3 is rotatably connected to the outer surface of the movable rod 2, and the connecting rod 3 is nested in the inner wall of the bookcase body 1, and a base 4 is connected to the inner surface of the bookcase body 1.

[0047] The moving rod 2 and the bookcase body 1 form a threaded adjustment limiting movement structure, and the moving rod 2 and the connecting rod 3 form a rotation structure. The connecting rod 3 and the bookcase body 1 form a built-in pressing structure. Meanwhile, the connecting rod 3 is symmetrically arranged about the middle section of the inner surface of the bookcase body 1. The other end of the outer surface of the connecting rod 3 is rotatably connected to a flip cover 301, and the outer surface of the flip cover 301 is connected to a pressing plate 302. A tension spring 303 is nested between the flip cover 301 and the pressing plate 302, and a limiting shaft 304 is nested and rotatably connected to the inner surface between the flip cover 301 and the pressing plate 302.

[0048] The flip cover 301 and the connecting rod 3 are connected by an off-axis for rotation. The flip cover 301 and the extrusion plate 302 form a rotating structure through the tension spring 303. The flip cover 301 and the extrusion plate 302 form a nested rotating structure with the limiting shaft 304. At the same time, the flip cover 301 and the extrusion plate 302 have an "R" shaped structure.

[0049] The bookcase body 1 is fixed in its position. When it is necessary to remove books or documents from the upper part of the bookcase body 1, the motor assembled on the upper part of the inner surface of the bookcase body 1 can be controlled to control the threaded rod connected to the output shaft. This effectively controls the horizontal movement of the moving rod 2 within the bookcase body 1. The rotation of the moving rod 2 drives the connecting rod 3 to move towards the rear of the inner surface of the bookcase body 1. In conjunction with the use of the inclined groove inside the bookcase body 1, a compression is formed between the connecting rod 3 and the inclined groove. The off-axis assembled at the front end of the connecting rod 3 drives the flip cover 301 to rotate in a positioning manner through the positioning shaft 304. With the continuous movement of the connecting rod 3, the flip cover 301 is effectively controlled to release the compression plate 302 connected to the tension spring 303 from the compression of the positioning shaft 304, causing the flip cover 301 to move towards the rear of the inner surface of the bookcase body 1. The nesting of the positioning shaft 304 also improves the stability of the movement of the flip cover 301.

[0050] The lead screw 5 is rotatably connected to the inner surface of the base 4, and the outer surface of the lead screw 5 is threadedly connected to the moving block 6. The upper surface of the base 4 is rotatably connected to the cabinet door 7, and the outer surface of the cabinet door 7 is rotatably connected to the positioning component 8. The lower side of the inner surface of the positioning component 8 is rotatably connected to the positioning shaft 9, and the positioning shaft 9 is nested on the inner surface of the bookcase body 1.

[0051] Nested block 10 is installed on the upper side of the inner surface of positioning component 8, and a locking block 11 is engaged with the inner surface of nested block 10, and a return spring 12 is attached to the lower surface of locking block 11, and locking block 11 is telescopically connected to the inner surface of bookcase body 1.

[0052] A rack 13 is installed on the rear side of the outer surface of the positioning component 8, and a limit strip 14 is installed on the side of the outer surface of the rack 13, which limits the sliding of the limit strip 14 on the inner wall of the bookcase body 1. A roller 15 is connected to the lower surface of the rack 13, and a worm gear 16 is meshed with the front side of the upper surface of the rack 13. A worm 17 is meshed with the rear side of the outer surface of the worm gear 16. A support block 18 is connected to the lower rear side of the outer surface of the positioning component 8, and the support block 18 is installed on the lower side of the inner surface of the bookcase body 1.

[0053] The base 4 forms a rotating structure with the lead screw 5 and the moving block 6. The outer surface of the lead screw 5 has a bidirectional spiral structure. The base 4 and the cabinet door 7 form a rotating structure, while the cabinet door 7 and the positioning component 8 form a rotating structure.

[0054] The outer surface of the movable block 6 is equipped with a movable shaft 601, and the outer surface of the movable shaft 601 is nested with a clip 602. The inner surface of the clip 602 is provided with a movable groove 603, which limits the movable shaft 601 to slide inside the movable groove 603. At the same time, the lower surface of the clip 602 is engaged with a slot 604 provided by the bookcase body 1.

[0055] The card 602 forms a sliding and rotating structure with the moving block 6 through the moving shaft 601 and the moving groove 603, and the card 602 forms a positioning rotation with the base 4 through the shaft. The outer surface of the card 602 is L-shaped, and the card 602 forms a limiting engagement structure with the bookcase body 1 through the card groove 604.

[0056] The positioning component 8 forms a positioning rotation structure with the bookcase body 1 through the positioning shaft 9, and the positioning component 8 and the nesting block 10 form an integrated structure. The nesting block 10 and the bookcase body 1 form an internal nesting structure. At the same time, the bookcase body 1 forms a limiting engagement structure with the nesting block 10 through the return spring 12 and the locking block 11.

[0057] The rack 13 and the positioning component 8 are embedded in the rear side of the outer surface. The positioning component 8 forms a rotating structure with the rack 13, the worm gear 16 and the worm 17. The rack 13 forms a limiting movement structure with the bookcase body 1 through the limiting strip 14 and the roller 15. At the same time, the positioning component 8 forms a limiting compression structure with the bookcase body 1 through the support block 18.

[0058] When it is necessary to remove books and documents from the middle section of the bookcase body 1, the cabinet door 7 can be controlled to rotate, causing the base 4 and positioning component 8 to rotate. This controls the angle of the cabinet door 7 and the base 4, allowing them to rotate synchronously and be in a normally open state. At this time, the positioning component 8 is in a positioning state to prevent the cabinet door 7 from tilting. When it is necessary to control the cabinet door 7 to rotate, the cabinet door 7, which is in a closed state, can be controlled, and the motor in the base 4 connected to the cabinet door 7 can be started. This effectively adjusts the lead screw 5 to rotate, causing the moving shaft 601 assembled by the moving block 6 to rotate in the moving groove 603 of the clamp 602. This controls the clamp 602 to rotate and engage in the clamping groove 604, controlling the base 4 and the bookcase body 1 to be in a positioning state. This allows the motor in the bookcase body 1 to be driven, and controls the worm gear. 17. Rotation of the meshing adjustment turbine 16, which in turn drives the meshing adjustment rack 13 to rotate the positioning component 8 under the positioning of the positioning shaft 9. During the rotation, the nested block 10 assembled by the positioning component 8 will disengage from the limit of the elastically adjusted locking block 11 of the return spring 12 assembled by the bookcase body 1. When the positioning component 8 disengages, it can simultaneously drive the cabinet door 7 to rotate. When the rack 13 on the positioning component 8 is limited and adjusted on the inner surface of the bookcase body 1 by the limit strip 14, it cooperates with the roller 15 to form support, preventing the rack 13 from falling off, thereby controlling the stability of the rotation of the positioning component 8. When the positioning component 8 rotates to a horizontal angle, the upper side of the positioning component 8 after flipping can contact the lower surface of the support block 18, effectively controlling the position of the support block 18 and improving the stability of the positioning component 8.

[0059] Support leg 19 is rotatably connected to the inner surface of cabinet door 7, and telescopic component 20 is rotatably connected to the inner surface of cabinet door 7. A compression spring 21 is nested on the inner surface of telescopic component 20, and a telescopic rod 22 is connected to the other side of compression spring 21. The telescopic rod 22 is telescopically assembled inside telescopic component 20, and the outer surface of telescopic rod 22 is rotatably connected to the inner surface of support leg 19. Thus, drawer 23 is telescopically assembled on the inner surface of bookcase body 1.

[0060] The support leg 19 and the cabinet door 7 form a nested rotating structure, and the cabinet door 7 and the telescopic component 20 form a positioning rotating structure. The telescopic component 20 forms an elastic telescopic structure with the telescopic rod 22 through the compression spring 21. At the same time, the support leg 19 forms a linkage rotating structure with the cabinet door 7 through the telescopic component 20 and the telescopic rod 22, and can form a stable supporting triangular structure.

[0061] When the cabinet door 7 and the positioning component 8 are flipped synchronously and are flat, the support leg 19 can be disengaged from the cabinet door 7 and rotated for positioning. This controls the telescopic component 20 on the cabinet door 7 to work with the compression spring 21 and the telescopic rod 22 to form elastic extension and contraction. The rotation of the support leg 19 controls the angle between the telescopic component 20 and the telescopic rod 22, thereby controlling the stability of the support leg 19. It can also be used in conjunction with the assembled drawer 23 to control the use of the space under the bookcase body 1.

[0062] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0063] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional student bookcase, comprising a bookcase body placed on the ground (1); characterized in that include: The movable rod (2) is threaded to the upper side of the inner surface of the bookcase body (1), and the outer surface of the movable rod (2) is rotatably connected to the connecting rod (3), and the connecting rod (3) is nested on the inner wall of the bookcase body (1), and the inner surface of the bookcase body (1) is connected to the base (4). A lead screw (5) is rotatably connected to the inner surface of the base (4), and a moving block (6) is threadedly connected to the outer surface of the lead screw (5). A cabinet door (7) is rotatably connected to the upper surface of the base (4). A positioning component (8) is rotatably connected to the outer surface of the cabinet door (7), and a positioning shaft (9) is rotatably connected to the lower side of the inner surface of the positioning component (8). The positioning shaft (9) is nested and installed on the inner surface of the bookcase body (1). The outer surface of the movable block (6) is equipped with a movable shaft (601), and the outer surface of the movable shaft (601) is nested with a clip (602). The inner surface of the clip (602) is also provided with a movable groove (603), which limits the movable shaft (601) to slide inside the movable groove (603). At the same time, the lower surface of the clip (602) is engaged with a slot (604) provided by the bookcase body (1). The card (602) forms a sliding rotation structure with the moving block (6) through the moving shaft (601) and the moving groove (603), and the card (602) forms a positioning rotation with the base (4) through the shaft. The outer surface of the card (602) is in the shape of an "L" shape. At the same time, the card (602) forms a limiting engagement structure with the bookcase body (1) through the card groove (604). Nested block (10) is installed on the upper side of the inner surface of the positioning component (8), and a locking block (11) is engaged on the inner surface of the nested block (10), and a return spring (12) is attached to the lower surface of the locking block (11), and the locking block (11) is telescopically connected to the inner surface of the bookcase body (1). A rack (13) is installed on the rear side of the outer surface of the positioning component (8), and a limit strip (14) is installed on the side of the outer surface of the rack (13), and the limit strip (14) is limited to slide on the inner wall of the bookcase body (1). A roller (15) is connected to the lower surface of the rack (13), and a turbine (16) is meshed on the front side of the upper surface of the rack (13), and a worm gear (17) is meshed on the rear side of the outer surface of the turbine (16). A support block (18) is connected to the lower rear side of the outer surface of the positioning component (8), and the support block (18) is installed on the lower side of the inner surface of the bookcase body (1). Supporting leg (19) is rotatably connected to the inner surface of the cabinet door (7), and the inner surface of the cabinet door (7) is rotatably connected to the telescopic assembly (20), and the inner surface of the telescopic assembly (20) is nested with the extrusion spring (21), and the other side of the extrusion spring (21) is connected with the telescopic rod (22), and the telescopic rod (22) is assembled in the telescopic assembly (20), and the outer surface of the telescopic rod (22) is rotatably connected to the inner surface of the supporting leg (19), and then the drawer (23) is assembled in the inner surface of the bookcase body (1).

2. The multi-functional student book cabinet according to claim 1, wherein: The moving rod (2) and the bookcase body (1) constitute a threaded adjusting limiting movement structure, the moving rod (2) and the connecting rod (3) constitute a rotating structure, the connecting rod (3) and the bookcase body (1) constitute an embedded extrusion structure, the connecting rod (3) is symmetrically arranged about the middle section of the inner surface of the bookcase body (1), the outer surface of the connecting rod (3) is rotatably connected to the flip cover (301), the outer surface of the flip cover (301) is connected to the extrusion plate (302), the flip cover (301) and the extrusion plate (302) are nested with the tension spring (303), and the limiting shaft (304) is rotatably connected between the inner surfaces of the flip cover (301) and the extrusion plate (302).

3. The multi-functional student book cabinet according to claim 2, wherein: The flip cover (301) and the connecting rod (3) are rotatably connected by matching eccentric connection, the flip cover (301) and the extrusion plate (302) constitute a rotating structure through the tension spring (303), the flip cover (301) and the extrusion plate (302) constitute a nested rotating structure with the limiting shaft (304), and the shapes of the flip cover (301) and the extrusion plate (302) are "R" type structures.

4. The multi-functional student book cabinet according to claim 1, wherein: The base (4) and the moving block (6) constitute a rotating structure through the lead screw (5), the outer surface of the lead screw (5) is in a bidirectional spiral structure, the base (4) and the cabinet door (7) constitute a rotating structure, and the cabinet door (7) and the positioning assembly (8) constitute a rotating structure.

5. The multi-functional student book cabinet according to claim 1, wherein: The positioning assembly (8) and the bookcase body (1) constitute a positioning rotating structure through the positioning shaft (9), the positioning assembly (8) and the nested block (10) constitute an integrated structure, the nested block (10) and the bookcase body (1) constitute an embedded nested structure, and the bookcase body (1) and the nested block (10) constitute a limiting clamping structure through the return spring (12) and the clamping block (11).

6. The multi-functional student book cabinet according to claim 1, wherein: The rack (13) is embeddedly installed on the rear side of the outer surface of the positioning assembly (8), the positioning assembly (8) and the turbine (16) and the worm (17) constitute a linkage rotating structure through the rack (13), the rack (13) and the bookcase body (1) constitute a limiting movement structure through the limiting strip (14) and the roller (15), and the positioning assembly (8) and the bookcase body (1) constitute a limiting extrusion structure through the supporting block (18).

7. The multi-functional student book cabinet according to claim 1, wherein: The support leg (19) and the cabinet door (7) constitute a nested rotating structure, the cabinet door (7) and the telescopic assembly (20) constitute a positioning rotating structure, and the telescopic assembly (20) and the telescopic rod (22) constitute an elastic telescopic structure through the extrusion spring (21), and the support leg (19) and the cabinet door (7) constitute a linkage rotating structure through the telescopic assembly (20) and the telescopic rod (22), and a stable triangular structure can be formed.

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