Storable seat for classroom

Abstract

The invention discloses a storable seat for a classroom, and relates to the technical field of teaching equipment.The storable seat for the classroom comprises a supporting device which comprises a base and a supporting column which are vertically connected; the supporting plate assembly is installed on the supporting device and comprises a vertical plate and a transverse plate which are integrally formed, and a containing groove is formed in the top of the transverse plate; the storage box assembly is arranged at the bottom of the transverse plate and comprises a box body and slidable partition plates, and the partition plates divide the box body into a plurality of independent storage spaces; the backrest adjusting device comprises a height adjusting mechanism for adjusting the height of the backrest plate and an angle adjusting mechanism for adjusting the angle of the backrest plate; the hook assemblies are arranged on the two sides of the bottom of the vertical plate and comprise L-shaped mounting plates and hook bodies. The clamping groove and the containing groove are formed in the top of the transverse plate, the clamping groove is connected with the plug connector at the bottom of the seat plate in a clamped mode, stable fixing of the seat plate is achieved, meanwhile, students can conveniently store small stationery through the design of the containing groove, and a table top is cleaner.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, and in particular to a foldable chair for a classroom. Background Art

[0002] In an educational environment, classroom chairs are an important part of students' daily learning activities, and their design and function directly affect students' learning experience and efficiency. Traditional classroom chairs are relatively simple in design, and their main function is limited to providing a platform for students to sit and lie down. However, with the continuous advancement of educational methods and the diversification of students' needs, this single-function chair can no longer meet the needs of modern education. Especially in class or during breaks, students need to frequently take and put away textbooks, notebooks, stationery and other learning supplies. If these items do not have a reasonable storage space, it is easy for the desktop to become cluttered, which not only affects students' learning efficiency, but may also disrupt classroom order. Therefore, how to design a classroom chair that can meet students' basic needs for sitting and lying down, while also providing effective item storage functions, has become a technical problem that urgently needs to be solved in the field of educational furniture.

[0003] In educational settings, classroom chairs serve as core facilities for students' daily learning, and their design directly affects learning efficiency, space management, and user experience. Traditional classroom chair designs have long suffered from problems such as single functionality, insufficient storage capacity, and poor adaptability, making them difficult to meet the diverse needs of modern educational scenarios. Specifically, existing technologies have the following drawbacks: 1. Lack of storage function Traditional chairs typically provide only the basic structure of a seat and backrest, lacking categorized storage for school supplies such as textbooks, stationery, and electronic devices. This forces students to frequently search for items on cramped desks or in their backpacks, leading to cluttered desks, inconvenient access, and even disrupting classroom discipline due to scattered items. While some existing chairs have simple storage compartments, these have fixed capacities and crudely defined sections, making them incapable of accommodating items of varying sizes (such as A4 textbooks and small stationery), limiting their practicality.

[0004] 2. Solid structure and poor adjustability The backrest angle and seat height of most chairs are fixed with mechanical clips or bolts. Adjustment requires tools and is cumbersome, making it difficult for students to adjust independently. Furthermore, the seat height and backrest angle cannot dynamically adapt to students' height and sitting habits, and long-term use can easily lead to health problems such as scoliosis. While some high-end products use electric adjustment, these are expensive and have a high failure rate, making them difficult to adopt in general education settings.

[0005] 3. Material and durability issues The base and support structures are often made of ordinary steel or plastic, which can easily deform under long-term loads and lack anti-slip properties, increasing the risk of chair slippage. The slide rails of storage components (such as drawers and boxes) are prone to jamming, making loud noises when opening and closing, and are prone to wear and tear after long-term use. Furthermore, rust on metal components and aging of plastic further shorten the lifespan of the chair and increase maintenance costs.

[0006] 4. Low space utilization efficiency Traditional chair designs fail to fully consider the intensive use of classroom space. For example, the gap between the backrest and seat, as well as the area beneath the seat, is not effectively utilized as storage space, resulting in wasted resources. Some chairs attempt to expand through folding or telescoping functions, but these structures are complex, unstable, and occupy additional space, reducing classroom layout flexibility.

[0007] In summary, there is an urgent need for an integrated, adjustable and durable classroom chair design solution that, through innovative structure and material application, can ensure basic functions while achieving efficient storage, personalized adaptation and long-term reliable use of learning supplies. Summary of the Invention

[0008] In view of this, the present invention provides a retractable chair for classroom use to solve the following technical problems: 1. Traditional seats have a single storage function and low efficiency The existing design lacks a classification and storage module, resulting in the chaotic stacking of textbooks, stationery and other learning supplies, and low desktop space utilization; the existing storage compartments have fixed capacity and rough partitioning, and cannot adapt to items of different sizes (such as A4 textbooks and small stationery), affecting the convenience of access.

[0009] 2. The seat structure is rigid and the adjustment flexibility is poor The backrest angle and seat height are fixed with mechanical clips or bolts, which require tools to adjust and are cumbersome. Students cannot adjust them independently. The fixed structure cannot adapt to height differences (such as 140cm-180cm) and sitting posture requirements (writing / reading). Long-term use can easily cause spinal health problems.

[0010] 3. Insufficient materials and durability The base and supporting structure are prone to deformation and have poor anti-slip properties, leading to the risk of the seat sliding or tipping over; the slide rails of the storage components are prone to jamming and wear, causing metal parts to rust and plastic to age, increasing maintenance costs.

[0011] 4. Low space utilization efficiency The gaps under the seats and between the backrest and the seat plate have not been effectively developed as storage space, resulting in a waste of resources; the existing folding / retractable design has a complex structure and poor stability, which in turn reduces the flexibility of classroom layout.

[0012] To achieve the above object, the present invention provides the following technical solutions: A retractable chair for a classroom, comprising: Support means, including a base and support columns connected vertically; The support plate assembly installed on the support device includes an integrally formed vertical plate and a horizontal plate, and the top of the horizontal plate is provided with a receiving groove; the storage box assembly is provided at the bottom of the horizontal plate, and includes a box body and a slidable partition plate, and the partition plate divides the box body into multiple independent storage spaces; A backrest adjustment device, comprising a height adjustment mechanism for adjusting the height of the backrest board and an angle adjustment mechanism for adjusting the angle of the backrest board; The hook assembly is arranged on both sides of the bottom of the vertical plate and includes an L-shaped mounting plate and a hook body.

[0013] Furthermore, it also includes a seat plate with a plug-in connector at the bottom, and a clamping groove is provided on the top of the horizontal plate, and the plug-in connector is clamped and connected with the clamping connector provided in the clamping groove.

[0014] Furthermore, the clamping component includes a pair of spring plates, which are symmetrically installed in the clamping groove and can clamp the spherical part of the plug-in component.

[0015] Furthermore, the clamping member further includes a pair of auxiliary elastic modules, which are installed on corresponding elastic sheets and are used to assist the corresponding elastic sheets in reliably clamping the spherical part.

[0016] Furthermore, the door at the opening of the box body is closed by adsorption of the magnetic plate and the iron plate.

[0017] Furthermore, the box body is provided with a vertically symmetrical partition plate, and the partition plate divides the box body into a plurality of independent storage spaces.

[0018] Furthermore, a plurality of partition plates are provided in the box body, and the partition plates divide the box body into a plurality of independent storage spaces.

[0019] Furthermore, the height adjustment mechanism includes: A pair of mobile seats; A pair of guide rails provided on the vertical plate, the guide rails being in sliding engagement with corresponding movable seats; a pair of first locking members, wherein the first locking members can pass through corresponding guide rails and connect with corresponding moving seats; In which, in the locked state, the first locking member is used to lock the movable seat on the guide rail so that the backrest board is at a certain height; in the unlocked state, the first locking member is disengaged from the movable seat and the guide rail, so that the movable seat can move relative to the guide rail, and thereby the backrest board can move to the desired height.

[0020] Furthermore, the angle adjustment mechanism includes: A pair of rotating shafts are fixed at both ends of the backrest plate and movably connected to the corresponding movable seats; At least one pair of second locking members, which are threadedly connected to the corresponding movable seats. In the locked state, the second locking members are positioned on the corresponding rotating shafts to enable the backrest board to be at a certain inclination angle; in the unlocked state, the second locking members are disengaged from the corresponding rotating shafts to enable the backrest board to rotate around the rotating shafts, thereby facilitating the adjustment of the backrest board to the desired inclination angle.

[0021] It can be seen from the above technical solution that the advantages of the present invention are: 1. The present invention is provided with a snap-in groove and a receiving groove on the top of the horizontal plate. The snap-in groove is connected with the connector at the bottom of the seat plate to achieve stable fixation of the seat plate. At the same time, the design of the receiving groove makes it convenient for students to store small stationery such as pens, erasers, rulers, etc., making the desktop more tidy.

[0022] 2. The present invention is provided with a storage box assembly, which is arranged at the bottom of the horizontal board and is used to store larger items such as textbooks and exercise books. It effectively solves the problem of lack of effective storage means for traditional classroom seats and improves students' learning efficiency and classroom order.

[0023] 3. The present invention combines the storage function with the seat structure through clever design, which not only meets the students' sitting and lying needs, but also provides convenient storage space, making the overall structure more practical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 for Figure 1 A schematic cross-sectional view of a storage box assembly.

[0027] Figure 3 for Figure 2 A partial enlarged view of point A.

[0028] Figure 4 for Figure 2 Schematic diagram of the structure inside the box.

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of the support plate assembly.

[0030] Figure 6It is a schematic diagram of the connection relationship between the cross plate, seat plate and the clamping parts.

[0031] Figure 7 for Figure 6 A partial enlarged view of point B.

[0032] Figure 8 for Figure 1 Right view of the connection relationship between the support plate assembly, movable seat and backrest plate.

[0033] Figure 9 for Figure 8 A top sectional view of the connection relationship between the vertical plate and the movable seat.

[0034] Figure 10 for Figure 8 Schematic diagram of the connection relationship between the movable seat, backrest plate and limit assembly.

[0035] Figure 11 for Figure 8 A cross-sectional schematic diagram of the connection relationship between the movable seat, backrest plate and limit assembly.

[0036] Figure 12 for Figure 8 Schematic diagram of the connection relationship between the vertical plate and the hook assembly.

[0037] Figure 13 This is another schematic diagram of the internal structure of the box.

[0038] Figure 14 This is another schematic diagram of the internal structure of the box.

[0039] Figure 15 It is a schematic diagram of the connection relationship between the card connector, the plug connector and the auxiliary card connector.

[0040] Figure 16 It is a schematic diagram of the connection relationship between the spherical part and the auxiliary engaging part.

[0041] Figure 17 A top view of the auxiliary engaging member.

[0042] Explanation of reference numerals: 1-base; 2-support column; 31-vertical plate; 311-enclosing space; 312-guide groove; 313-insertion hole; 314-limiting hole; 315-guide rail; 316-limiting pin; 345-limiting pin; 32-cross plate; 321-accommodating groove; 322-clamping groove; 3221-counterbore; 33-knurled screw; 4-seat plate; 41-connector; 411-vertical rod; 412-spherical part; 4121-tapered hole; 5-movable seat; 51-convex ridge; 52-screw hole; 53-bump; 54-locking rod; 55- Long notch; 6-backrest plate; 61-rotating shaft; 611-positioning hole; 71-mounting plate; 72-hook body; 8-storage box assembly; 81-top plate; 82-box body; 83-box door; 84-magnetic plate; 85-iron plate; 86-positioning strip; 861-through groove; 87-partition plate; 88-handle; 9-clamping part; 91-mounting plate; 92-elastic plate; 93-clamping protrusion plate; 94-bump; 95-movable rod; 96-compression spring; 100-auxiliary clamping part; 101-fixed plate; 102-connecting arm; 103-clamping block. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0044] Example 1 This invention addresses the core issues of traditional classroom chairs, such as limited functionality, inconvenient adjustment, and low space utilization, by proposing an integrated, adjustable, and durable solution. Through the collaborative design of a modular storage system, a dynamic adjustment mechanism, and high-strength, lightweight materials, it achieves four innovative goals: functional integration, dynamic adaptive adjustment, a long-lasting and reliable structure, and improved space efficiency. The specific goals are as follows: 1. Functional integration and storage optimization: The slotted seat and multi-level sliding partition storage box support the classified storage of textbooks, stationery and other items. The magnetic closing door and side hook components expand the storage space and reduce desktop clutter by more than 70%.

[0045] 2. Dynamic adaptive adjustment: The backrest height is adjusted by sliding the movable seat and the guide groove, and locked with a knurled screw to adapt to height differences (140cm-180cm). The inclination limit component realizes multi-level angle adjustment to improve sitting comfort.

[0046] 3. Long-lasting and reliable structure: Aluminum alloy / high-strength plastic base with rubber anti-slip pads enhance stability. The built-in elastic compensation module in the clip-on ensures the stability of the seat plate. The modular design supports individual component replacement, reducing maintenance costs by 50%.

[0047] 4. Improved space efficiency: The storage design of the hook under the seat and the gap between the backrest increases space utilization by 40%, and the backrest ventilation holes and weight-reducing structure optimize the summer user experience.

[0048] The retractable classroom chair involved in this embodiment solves the technical bottlenecks of traditional chairs' rigid functions, inefficient adjustment and insufficient durability through the four-dimensional collaborative innovation of "storage-adjustment-health-space", providing a cost-effective and practical chair solution for educational scenarios.

[0049] Please refer to the attached Figures 1 to 12 ,in Figure 1 The embodiment of the present invention is a foldable classroom chair. The design of the chair includes several key components, specifically, a base 1, a support column 2, a support plate assembly, a seat plate 4, a storage box assembly 8, a backrest adjustment device, and a hook assembly.

[0050] like Figure 1 As shown, the support device consists of a base 1 and support columns 2 that are vertically connected. Specifically, the two support columns 2 are fixedly connected to the base 1. The base 1 and the support columns 2 can be made of aluminum alloy or high-strength plastic, and the specific choice depends on the actual requirements of the application and the environment. Aluminum alloy is light and strong, and is particularly suitable for occasions where weight needs to be reduced while ensuring structural strength; high-strength plastic, due to its corrosion resistance and cost-effectiveness, performs well in applications that need to resist chemical erosion or are in humid environments, and can provide longer-lasting durability and lower maintenance costs. A rubber anti-slip pad is installed at the bottom of the base 1, which can effectively increase the friction between the contact surface, prevent the seat from sliding during use, and ensure stability.

[0051] like Figure 1 、 Figure 5 and Figure 8 As shown, the support plate assembly is composed of a vertical plate 31 and a horizontal plate 32 that are integrally connected. The four corners of the top of the horizontal plate 32 are respectively provided with snap-in grooves 322, which are used to accommodate the connectors 41 at the bottom of the seat plate 4. The number of connectors 41 corresponds to the snap-in grooves 322, and there are 4 connectors in total. By inserting the connector 41 into the snap-in groove 322 and engaging it with the snap-in connector 9 provided in the snap-in groove 322, the seat plate 4 can be stably fixed. In addition, a number of receiving grooves 321 are designed on the top of the horizontal plate 32. These receiving grooves 321 are used to store small items such as pens, erasers, rulers, etc., which greatly facilitates students' use during the learning process.

[0052] like Figure 5 、 Figure 6As shown, the clamping groove 322 is a three-step groove, and a pair of symmetrically arranged clamping members 9 are symmetrically distributed inside it. The clamping members 9 are plugged into and matched with the plug-in members 41, thereby achieving a stable connection between the seat plate 4 and the cross plate 32, ensuring the firmness and reliability of the structure.

[0053] To explain this structure more clearly, Figure 6 and Figure 7 As shown, the bottom of the seat plate 4 is provided with a plug-in connector 41, which is composed of an integrally formed vertical rod portion 411 and a spherical portion 412. The corresponding snap-in connector 9 includes a pair of integrally formed springs and a pair of auxiliary elastic modules, wherein the springs are composed of a mounting plate 91, an elastic plate 92 and a snap-fitting protrusion plate 93. When the plug-in connector 41 is inserted between the pair of snap-in connectors 9, the elastic plate 92 will produce an inward elastic deformation, thereby driving the snap-fitting protrusion plate 93 to fit tightly with the vertical rod portion 411 and the spherical portion 412, thereby achieving a stable mechanical interlock. The auxiliary elastic module is composed of a protrusion 94, a movable rod 95 and a compression spring 96, which is used to assist the springs in reliably clamping the spherical portion 412, forming an elastic compensation mechanism to ensure the stability of the seat plate 4.

[0054] The bottom outer wall of the mounting plate 91 is fixed to the second step side wall of the engaging groove 322 by welding or bolting. When the plug connector 41 is inserted between the pair of engaging members 9 until the end of the spherical portion 412 abuts the bottom wall of the third step of the engaging groove 322, the elastic plate 92 extending from the top of the mounting plate 91 undergoes inward elastic deformation, which in turn drives the outer wall surface of the engaging protrusion plate 93 to tightly fit the vertical rod portion 411 and the spherical portion 412, ultimately achieving stable mechanical interlocking due to the elastic preload. The auxiliary elastic module consists of a protrusion 94, a movable rod 95 and a compression spring 96. The movable rod 95 can be slidably installed on the mounting plate 91, and a protrusion 94 is fixed at its end to form an auxiliary support for the engaging protrusion plate 93. The compression spring 96 is sleeved on the outer periphery of the movable rod 95, and its two ends are respectively abutted against the mounting plate 91 and the left side of the protrusion 94 to form an elastic compensation mechanism. An end plate structure is provided at the far end of the movable rod 95, which can effectively limit the axial displacement of the movable rod 95 and prevent the compression spring 96 from falling off.

[0055] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the storage box assembly 8 is arranged at the bottom of the horizontal plate 32 and located in the middle of the two support columns 2. The storage box assembly 8 consists of a top plate 81 and a box body 82. The top plate 81 is connected to the horizontal plate 32 by screws. The box body 82 is a semi-enclosed structure with one side open, which can be used to store larger items such as textbooks and exercise books.

[0056] The inner wall of the box 82 is equipped with vertically symmetrical positioning bars 86, each with a through slot 861 to accommodate the sliding arrangement of a divider 87. The divider 87 is slidably positioned between two upper and lower positioning bars 86, and multiple sets of symmetrical positioning bars 86 are arranged vertically within the box 82. This design allows students to freely adjust the position of the dividers 87 according to their actual needs, creating multiple independent storage spaces within the box 82. This not only accommodates items of various sizes, but also meets different storage needs, further improving storage efficiency and convenience.

[0057] like Figure 2 and Figure 3 As shown, in order to prevent the items stored in the box 82 from accidentally falling out, a box door 83 is set at the opening of the box 82. The upper end of the box door 83 is hinged to the upper end of the opening by a hinge. An iron plate 85 is fixedly installed on the bottom of the inner wall of the box door 83, and a magnetic plate 84 is installed at the bottom of the opening. The magnetic plate 84 can be magnetically attracted to the iron plate 85, thereby ensuring that the box door 83 can be firmly held in the appropriate position when closed, which effectively prevents items from falling and makes it convenient for students to open and close the box door 83 to easily take out the items in the box 82. Figure 2 As shown, a handle 88 is also provided on the outside of the box door 83 to facilitate students to easily open and close the box door 83, further enhancing the convenience of use.

[0058] Through this ingenious design, students can easily classify and store their personal belongings, making the learning environment more tidy and orderly, and more convenient to use.

[0059] In an embodiment of the present invention, Figure 1 、 Figure 5 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 The backrest adjustment device includes a height adjustment mechanism for adjusting the height of the backrest board 6 and an angle adjustment mechanism for adjusting the angle of the backrest board 6. The upper end of the vertical plate 31 is provided with an inclusive space 311 that runs through the thickness direction thereof, dividing the upper end portion of the vertical plate 31 into two independent left and right guide rails 315. Long guide grooves 312 are provided on the front and rear walls of the guide rails 315 on both sides. A long notch 55 is provided on one side of the movable seat 5, and convex ribs 51 are provided on the two inner walls of the long notch 55. The convex ribs 51 slide in conjunction with the guide grooves 312, so that the movable seat 5 can be smoothly slid on the guide rails 315 on both sides. The setting of the guide grooves 312 ensures that the movable seat 5 can maintain linear motion during the sliding process, avoiding the occurrence of offset or shaking.

[0060] Specifically, several sockets 313 extending through the guide rails 315 are provided along their lengths. The backrest 6 is pivotally positioned between the two movable seats 5 via two pivot shafts 61 (the pivot shafts 61 are mounted on bearings within the movable seats 5). To adjust the height of the backrest 6 according to individual needs, students push the backrest 6, causing it to slide up and down, thereby adjusting the height. Once the backrest 6 reaches the desired height, the knurled screws 33 are threaded through the corresponding sockets 313 and engage with the screw holes 52 within the movable seats 5, securing the backrest 6 and movable seats 5 in the desired position. This ensures the stability of the seat structure and the reliability of its use.

[0061] To prevent the movable seat 5 from accidentally falling out of the top of the guide rail 315 during its vertical movement, a limiting hole 314 is defined on the top surface of one side of the guide rail 315. This cylindrical hole 314's axis is perpendicular to the direction of motion of the movable seat 5. Once the movable seat 5 is assembled on the guide rail 315, a limiting pin 316 is inserted axially into the limiting hole 314. Because the limiting pin 316 is coated with a 0.8μm chrome-plated surface, this microscopically interlocks with the groove wall of the limiting hole 314, effectively preventing the movable seat 5 from falling out and further enhancing the stability of the seat structure.

[0062] Between the side walls of the movable seat 5 facing the backrest plate 6, a group of limit assemblies are symmetrically distributed in the upper and lower parts. The limit assembly accurately controls the rotation angle range of the backrest plate 6 by mechanical limiting means, and a linkage mechanism is formed by a protrusion 53 and a locking rod 54. Among them, the protrusion 53 is fixedly installed on the outer surface of the side wall of the movable seat 5 close to the backrest plate 6 by welding / bolting, and an internal thread is processed inside. The locking rod 54 adopts a stepped shaft structure design, and the upper half of the rod body is processed with an external thread, which forms a threaded fit with the internal thread of the protrusion 53, and the lower half is an optical axis structure. During assembly, the locking rod 54 passes through the upper protrusion 53 from top to bottom, and finally screws into the positioning hole 611 opened on the rotating shaft 61 and tightens to achieve locking. In particular, a number of positioning holes 611 with circular cross-sections are opened in the circumference of the rotating shaft 61, which form a transition fit with the optical axis section of the locking rod 54. When the locking rod 54 is screwed in, the optical axis section thereof comes into contact with the positioning hole 611 , thereby achieving multi-stage adjustable limiting of the tilting angle of the backrest plate 6 .

[0063] In addition, the backrest board 6 is provided with a number of small holes running through the thickness direction. These small holes not only enhance the air permeability of the backrest board 6, but also reduce the weight of the backrest board 6, making the seat as a whole lighter.

[0064] like Figure 8 、 Figure 12As shown, a pair of hook assemblies are provided on either side of the bottom of the upright 31. The hook assemblies consist of a mounting plate 71 and a hook body 72. Specifically, the mounting plate 71 is L-shaped, with one end fixedly connected to the side wall of the upright 31 and the other end welded to the bottom of the hook body 72. This ensures the stability of the hook assembly, effectively increases the storage space of the seat, and makes the overall structure more practical and convenient.

[0065] When the support frame 31 is in the upright position, the support frame 31 is in the upright position, and the support frame 31 is in the upright position, so that the support frame 31 is in the upright position, and the support frame 31 is in the upright position. When the support frame 31 is in the upright position, the support frame 31 is in the upright position, and the support frame 31 is in the upright position, so that the support frame 31 is in the upright position.

[0066] Throughout the installation process, the guide grooves 312 guide the backrest 6 and movable seat 5, allowing them to slide effortlessly along the guide rails 315 of the upright 31, eliminating the need for additional tools and significantly simplifying the installation process. Furthermore, the knurled screws 33 provide a secure, secure lock while also allowing for quick release and adjustment when needed, fully demonstrating the design's flexibility and practicality. Once installed, the backrest 6 can be adjusted up and down based on the student's height and sitting posture, effectively improving the chair's comfort and usability, creating a more conducive learning environment for students.

[0067] Usage process: Students can store larger items such as textbooks and exercise books in the box body 82 of the storage box assembly 8 according to their personal needs, and build a suitable storage space by adjusting the position of the partition plate 87; store small items such as pens, erasers, rulers, etc. in the receiving groove 321 at the top of the horizontal plate 32; according to personal height and sitting habits, push the backrest board 6 to drive the movable seat 5 to slide up and down, adjust the height of the backrest board 6 to a suitable position, and lock it with the knurled screw 33; according to personal sitting habits, adjust the inclination angle of the backrest board 6 to a suitable position by rotating the locking rod 54 to achieve multi-level angle adjustment; use the hook body 72 of the hook assembly to hang school bags, clothes and other items to further expand the storage space.

[0068] The retractable classroom chair involved in this embodiment has the following specific technical effects: 1. Functional integration and storage optimization: It realizes the classified storage of textbooks, stationery and other items, reduces desktop clutter by more than 70%, and improves the cleanliness and orderliness of the learning environment.

[0069] 2. Dynamic adaptive adjustment: The backrest height and inclination can be adjusted to adapt to height differences (140cm-180cm), improving sitting comfort and helping to protect students' spinal health.

[0070] 3. Long-lasting and reliable structure: The aluminum alloy / high-strength plastic base with rubber anti-slip pads enhances stability. The built-in elastic compensation module in the clip-on ensures the stability of the seat plate. The modular design supports individual component replacement, reducing maintenance costs by more than 50%.

[0071] 4. Improved space efficiency: The storage design between the hook under the seat and the gap between the backrest increases space utilization by 40%. The ventilation holes and weight-reducing structure of the backrest optimize the summer usage experience and improve the practicality and comfort of the seat.

[0072] Example 2 like Figure 13 As shown, the inner wall of the box 82 is provided with multiple sets of vertically symmetrical partitions 87, which construct multiple independent storage spaces inside the box 82. The storage spaces are fixed and can accommodate various items. Compared with embodiment 1, the multiple independent storage spaces are fixed and the storage spaces cannot be adjusted.

[0073] Example 3 like Figure 14 As shown, the inner wall of the box 82 is provided with a plurality of partitions 87, which construct a plurality of independent storage spaces inside the box 82. The storage spaces are fixed and can accommodate various items. Compared with embodiment 1, the plurality of independent storage spaces are fixed and the storage spaces cannot be adjusted.

[0074] Example 4 like Figure 15 、 Figure 16 and Figure 17 As shown, an auxiliary clamping member 100 is installed on the countersunk hole 3221 of the bottom wall of the third step, and the auxiliary clamping member 100 includes a fixed plate 101 and a pair of connecting arms 102. The fixed plate 101 is installed in the countersunk hole 3221, and the pair of connecting arms 102 are symmetrically connected to the upper end of the fixed plate 101. The connecting arms 102 extend upward from the countersunk hole 3221 to the tapered hole 4121 of the spherical part 412. The upper end of the connecting arm 102 is connected to a clamping block 103, and the outer conical surface of the pair of clamping blocks 103 abuts against the inner wall of the tapered hole 4121. The opening edge of the tapered hole 4121 abuts against the bottom wall of the third step. The above structure enables the spherical part 412 to be reliably connected to the cross plate 32, thereby realizing a stable connection between the seat plate 4 and the cross plate 32, ensuring the firmness and reliability of the structure.

[0075] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A retractable chair for classroom use, characterized in that: include: A supporting device comprising a base (1) and a supporting column (2) connected vertically; A support plate assembly mounted on the supporting device comprises an integrally formed vertical plate (31) and a horizontal plate (32), wherein a receiving groove (321) is provided on the top of the horizontal plate (32); a storage box assembly (8) is disposed at the bottom of the horizontal plate (32), comprising a box body (82) and a slidable partition plate (87), wherein the partition plate (87) divides the box body (82) into a plurality of independent storage spaces; A backrest adjustment device comprising a height adjustment mechanism for adjusting the height of the backrest board (6) and an angle adjustment mechanism for adjusting the angle of the backrest board (6); The hook assembly is arranged on both sides of the bottom of the vertical plate (31), and comprises an L-shaped mounting plate (71) and a hook body (72).

2. The retractable classroom chair according to claim 1, wherein: It also includes a seat plate (4) with a plug-in connector (41) at the bottom, a clamping groove (322) at the top of the transverse plate (32), and the plug-in connector (41) is engaged with a clamping connector (9) provided in the clamping groove (322).

3. The retractable classroom chair according to claim 2, wherein: The clamping member (9) comprises a pair of spring pieces, which are symmetrically mounted in the clamping groove (322), and the pair of spring pieces can clamp the spherical portion (412) of the plug-in member (41).

4. The retractable classroom chair according to claim 3, wherein: The clamping member (9) further comprises a pair of auxiliary elastic modules, which are mounted on corresponding elastic sheets and are used to assist the corresponding elastic sheets in reliably clamping the spherical portion (412).

5. The retractable classroom chair according to claim 1, wherein: The box door (83) at the opening of the box body (82) is closed by adsorption of the magnetic plate (84) and the iron plate (85).

6. The retractable classroom chair according to claim 1, wherein: A partition plate (87) symmetrical in upper and lower directions is provided in the box body (82), and the partition plate (87) divides the box body (82) into a plurality of independent storage spaces.

7. The retractable classroom chair according to claim 1, wherein: A plurality of partition plates (87) are provided in the box body (82), and the partition plates (87) divide the box body (82) into a plurality of independent storage spaces.

8. The retractable classroom chair according to claim 1, wherein: The height adjustment mechanism comprises: a pair of movable seats (5); A pair of guide rails (315) are provided on the vertical plate (31), wherein the guide rails (315) are in sliding engagement with corresponding movable seats (5); a pair of first locking members, wherein the first locking members are capable of passing through corresponding guide rails (315) and connecting with corresponding movable seats (5); Wherein, in a locked state, the first locking member is used to lock the movable seat (5) on the guide rail (315) so that the backrest board (6) is at a certain height; in an unlocked state, the first locking member is disengaged from the movable seat (5) and the guide rail (315), so that the movable seat (5) can move relative to the guide rail (315), thereby enabling the backrest board (6) to move to a desired height.

9. The stowable classroom chair according to claim 8, wherein: The angle adjustment mechanism comprises: A pair of rotating shafts (61) are fixed at both ends of the backrest plate (6) and are movably connected to the corresponding movable seats (5); At least one pair of second locking members, wherein the second locking members are threadedly connected to the corresponding movable seats (5); in a locked state, the second locking members are positioned on the corresponding rotating shafts (61) so that the backrest plate (6) is at a certain inclination angle; in an unlocked state, the second locking members are disengaged from the corresponding rotating shafts (61) so that the backrest plate (6) can rotate around the rotating shafts (61), thereby facilitating the adjustment of the backrest plate (6) to a desired inclination angle.

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