Adjustable learning chair and learning table and chair

Abstract

The utility model discloses an adjustable learning chair and a learning table and chair, and belongs to the technical field of learning chairs, the adjustable learning chair comprises a chair seat and a backrest, the rear side of the chair seat extends upwards to form the chair back, the chair seat and the chair back are integrally formed, the chair back is provided with a sliding rail in the vertical direction, the backrest is installed on the sliding rail, and the backrest can move up and down along the sliding rail under stress; a plurality of clamping grooves are formed in the contact face of the backrest and the chair back in the vertical direction, a plug pin is installed on the chair back through an elastic piece, the rear end of the plug pin is located on the rear side of the chair back, and the front end of the plug pin penetrates through the chair back to be inserted into one clamping groove under the action of the elastic piece. The chair has the advantages of being high in structural strength, convenient to adjust and stable in backrest.

Description

Technical Field

[0001] This application relates to the field of study chair technology, and in particular to an adjustable study chair and study table and chair. Background Technology

[0002] A chair consists of a backrest, seat, and legs. The backrest primarily supports the back of the human body. Common chairs typically have fixed, non-movable backrests. Users can only achieve back support by changing their sitting posture to bring their back closer to the backrest, which has limitations and restricts the user's sitting posture.

[0003] Later, chairs with adjustable backrests appeared on the market. Related prior art, such as Chinese patent application "A Backrest Height Adjustment Device," application number: CN202220865718.7, discloses a backrest arm for connecting to the chair back and a collar disposed at the end of the backrest arm away from the chair back. A chair frame tube is fitted inside the collar. A slot is provided on one side of the collar. A countersunk hole is provided on the side of the backrest arm near the collar. One side of the countersunk hole communicates with the slot. A locking component is provided in the countersunk hole. The locking component includes a button disposed in the countersunk hole and a lever hinged to the button. The end of the lever away from the button passes through the slot. Locking holes that mate with the lever are provided on the chair frame tube. The locking holes are spaced apart on the chair frame tube. A locking spring is provided between the button and the countersunk hole.

[0004] Current study chairs typically achieve backrest adjustment via a chair frame. Specifically, the backrest and chair frame are connected by bolts or clips, with multiple holes in the frame allowing for height adjustment. Using a chair frame for backrest installation has two drawbacks: firstly, the tubular structure of the frame makes the backrest prone to rotation under stress; secondly, the entire backrest relies on the frame for support, resulting in limited overall structural strength and insufficient stability. Utility Model Content

[0005] The technical problem to be solved by this application is to provide an adjustable study chair and study desk and chair, which has the advantages of high structural strength, convenient adjustment and stable backrest.

[0006] The technical solution adopted in this application is as follows: an adjustable study chair, including a seat and a backrest, the rear side of the seat extends upward to form a backrest, the seat and the backrest are integrally formed, the backrest is provided with a slide rail in the vertical direction, the backrest is installed on the slide rail, the backrest can move up and down along the slide rail under force, multiple slots are arranged in the vertical direction at the contact surface between the backrest and the backrest, and a pin is installed on the backrest by an elastic element, the rear end of the pin is located on the rear side of the backrest, and the front end of the pin passes through the backrest and inserts into one of the slots under the action of the elastic element.

[0007] Compared with existing technologies, the advantages of this application are as follows: First, the seat and backrest are integrally molded, which significantly improves the overall structural strength compared to the traditional method of connecting them through chair frame tubes. The integral molding design reduces the number of connection points, avoiding structural instability caused by loose or worn connectors, allowing the backrest to maintain its position and posture more stably under stress, and preventing it from wobbling or deforming, thus providing more reliable support for the user.

[0008] Secondly, the backrest is mounted on a slide rail on the chair back. Multiple slots at the contact surface between the backrest and chair back, along with a pin secured by a spring-loaded mechanism, lock the backrest and chair back together. When the user needs to adjust the backrest height, they simply pull the pin back a short distance, allowing the backrest to slide up and down relative to the chair back. Once the backrest is adjusted to the desired position, the pin automatically engages with the corresponding slot under the action of the spring-loaded mechanism, securing it in place. No additional tools or complicated operations are required, allowing users to quickly and easily adjust the backrest height to meet the needs of different heights or sitting postures.

[0009] Finally, the slide rails are mounted on the chair back, and the latches are installed inside the chair back, resulting in a high degree of component integration and a compact structure for the entire adjustment mechanism. This design reduces the exposure of external components, not only improving the product's aesthetics but also reducing the risk of component damage or loss, while also facilitating product cleaning and maintenance.

[0010] In some embodiments of this application, the chair back is provided with two slide rails on the left and right sides along the vertical direction, and the pin passes through the middle of the two slide rails.

[0011] In other words, the slots arranged vertically are located between the two slide rails. Placing the slots between the two slide rails allows for efficient use of the interior space of the chair back, resulting in a more compact overall structure, reduced interference between components, and improved space utilization.

[0012] The dual-rail design makes the backrest more stable when moving up and down, less prone to lateral swaying, and improves the reliability of backrest movement and fixation. The two rails on the left and right sides can distribute the weight and force of the backrest more evenly, reducing the risk of structural deformation or damage caused by excessive force at a single point, and extending service life.

[0013] In some embodiments of this application, the upper part of the chair back is a connecting section, the slide rail is disposed on the front side of the connecting section, and the pin is installed at the connecting section; the cross-section of the connecting section is a trapezoidal frame structure, and the width of the rear side of the connecting section is greater than the width of the front side of the connecting section.

[0014] The trapezoidal frame structure of the connecting sections has good bending and torsional resistance, effectively withstanding various forces generated by the backrest during use and improving the structural strength of the chair back. The rear side is wider than the front side, making the chair back more stable under load and less prone to tilting backward, while also providing a more stable mounting base for components such as the latches.

[0015] In some embodiments of this application, the front side of the connecting segment fits against the backrest, the front side of the connecting segment is a concave arc surface, and the rear side of the connecting segment is an outwardly curved surface; the left and right sides of the connecting segment are inclined surfaces, and the left and right sides of the connecting segment are smoothly connected to the front and rear sides.

[0016] The concave curved design allows for a closer fit between the backrest and the connecting section. The smooth transitions between surfaces, as well as the combination of curved and inclined surfaces, make the chair back look more fluid and natural, enhancing the overall aesthetics of the product.

[0017] In some embodiments of this application, the rear side of the backrest is provided with two limiting strips in the vertical direction. The limiting strips are provided on both sides of the connecting section of the backrest, and the inner side of the limiting strips fits against the side of the backrest. The inner side of the limiting strips is an inclined surface.

[0018] The design of the limiting strip further restricts the relative movement trajectory between the backrest and the chair back, ensuring that the backrest can only move in a predetermined vertical direction, preventing the backrest from shifting or tilting during adjustment. The limiting strip has an overall triangular cross-section. The tight fit between the limiting strip and the side of the chair back improves the stability of the backrest in a fixed position, reduces wobbling, and enhances safety during use.

[0019] In some embodiments of this application, two protruding posts are provided on the backrest side, and a slider is installed in the slide rail. The two protruding posts are inserted into the slide rail and locked with the slider.

[0020] The locking connection between the protruding post and the slider makes the connection between the backrest and the slide rail more secure and reliable, capable of withstanding greater tension and pressure, and preventing the backrest from loosening during use. As the slider moves within the slide rail, it smoothly moves the backrest up and down, preventing wobbling or shifting during movement, thus improving comfort and safety.

[0021] In some embodiments of this application, the slider has a racetrack-shaped structure, the slider is adapted to the slide rail structure, and the slider can move up and down along the length of the slide rail; a cover plate is provided on the rear side of the chair back, and the cover plate covers the slide rail.

[0022] The racetrack-shaped slider adapts to the slide rail, allowing for smoother movement, reducing friction and wear, and improving sliding flexibility and durability. The cover conceals the slide rail and internal components such as the slider, resulting in a cleaner and more aesthetically pleasing chair back. It also provides some protection, preventing dust and debris from entering the slide rail and affecting its performance, and also preventing accidental finger pinching.

[0023] In some embodiments of this application, a cushion is provided on the front side of the backrest, and the cushion is installed on the backrest by a snap fastener.

[0024] Preferably, the backrest cushion is made of elastic material. The cushion provides softer, more comfortable support for the user's back, and the elastic material adapts to the curves of different users' backs, relieving fatigue from prolonged sitting. The snap-on installation method makes the cushion easy and quick to install and remove, allowing users to wash, replace, or adjust its position as needed.

[0025] In some embodiments of this application, a cushion is provided on the top surface of the chair seat, and the cushion is installed on the chair seat by means of a snap fastener.

[0026] Preferably, the seat cushion is made of elastic material. The cushion distributes pressure on the user's buttocks, providing a more comfortable seating experience. The elastic material also provides cushioning, alleviating discomfort from prolonged sitting. The snap-on installation facilitates easy removal and cleaning of the cushion, allowing users to easily maintain and care for the seat, keeping it clean and hygienic.

[0027] An adjustable backrest study desk and chair includes a base, a study desk and the study chair. The study chair has a leg under the seat, and the bottom of the leg is inserted into the base. The study desk is installed on the base and is located in front of the study chair.

[0028] Compared with existing technologies, the advantages of this application are: the study chair has high structural strength, convenient adjustment, and a stable backrest. This application integrates the study desk and study chair through a base, resulting in a more stable overall structure and improved overall stability. At the same time, this integrated design facilitates overall transportation and repositioning, saving space. Furthermore, the layout of the study desk and study chair on the base is reasonable and meets the needs of the learning environment.

[0029] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0030] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0031] Figure 1 This is a schematic diagram of the structure of the study chair in this application. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the structure of the study chair in this application. Figure 2 ;

[0033] Figure 3 This is a cross-sectional view of the pin in this application;

[0034] Figure 4 This is a schematic diagram of the internal structure of the study chair in this application;

[0035] Figure 5 This is a structural diagram of the study desk and chair in this application.

[0036] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Seat; 2. Backrest; 3. Chair back; 3a. Connecting section; 4. Slide rail; 5. Slot; 6. Elastic element; 7. Pin; 10. Limiting strip; 11. Protruding post; 12. Sliding block; 13. Cover plate; 14. Cushion; 15. Seat cushion; 16. Base; 17. Study table; 18. Chair leg. Detailed Implementation

[0037] The present application will now be described in detail with reference to the accompanying drawings.

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] An adjustable study chair, as described in embodiment one. Figure 1 , Figure 2 As shown: The chair includes a seat 1 and a backrest 2. The rear side of the seat 1 extends upward to form the backrest 3. The seat 1 and backrest 3 are integrally formed, which significantly improves the overall structural strength compared to the traditional method of connecting them through a chair frame tube. The integral design reduces the number of connection points, avoiding structural instability caused by loose or worn connectors. This allows the backrest 3 to maintain its position and posture more stably under stress, making it less prone to swaying or deformation, and providing more reliable support for the user.

[0040] The chair back 3 is vertically mounted with a slide rail 4, and the backrest 2 is mounted on the slide rail 4. The backrest 2 can move up and down along the slide rail 4 under force. Multiple slots 5 are arranged vertically at the contact surface between the backrest 2 and the chair back 3. A pin 7 is mounted on the chair back 3 via an elastic element 6. The rear end of the pin 7 is located at the rear side of the chair back 3, and the front end of the pin 7, under the action of the elastic element 6, passes through the chair back 3 and inserts into one of the slots 5. The pin 7, mounted via the elastic element 6, locks the backrest 2 and chair back 3 together. When the user needs to adjust the height of the backrest 2, they only need to pull the pin 7 back a certain distance, and the backrest 2 can slide up and down relative to the chair back 3. After the backrest 2 is adjusted to a suitable position, the pin 7 automatically inserts into the corresponding slot 5 under the action of the elastic element 6 to complete the fixation. No additional tools or complicated operations are required, allowing users to quickly and easily adjust the height of the backrest 2 to meet the needs of different heights or sitting postures.

[0041] By mounting the slide rail 4 on the chair back 3 and installing the pin 7 inside the chair back 3, the entire adjustment mechanism achieves high component integration and a compact structure. This design reduces the exposure of external components, improving the product's aesthetics, reducing the risk of component damage or loss, and facilitating product cleaning and maintenance.

[0042] Example 2, as Figures 1 to 4 As shown, the chair back 3 has two vertically arranged left and right slide rails 4, and the pin 7 passes through the middle of the two slide rails 4. That is to say, the slots 5 arranged vertically are located between the two slide rails 4. Placing the slots 5 between the two slide rails 4 makes reasonable use of the internal space of the chair back 3, the overall structure is more compact, reduces interference between components, and improves space utilization.

[0043] The design of two slide rails 4 makes the backrest 2 more stable when moving up and down, less prone to swaying from side to side, and improves the reliability of the backrest 2 when moving and fixing. The two slide rails 4 on the left and right sides can distribute the weight and force of the backrest 2 more evenly, reduce the risk of structural deformation or damage caused by excessive force at a single point, and extend its service life.

[0044] The upper part of the chair back 3 is a connecting section 3a, with a slide rail 4 located on the front side of the connecting section 3a. The pin 7 is installed at the connecting section 3a. The connecting section 3a has a trapezoidal frame structure in cross-section, with the width of the rear side of the connecting section 3a being greater than the width of the front side. The trapezoidal frame structure of the connecting section 3a provides good bending and torsional resistance, effectively withstanding various forces generated during use and improving the structural strength of the chair back 3. The greater width of the rear side compared to the front side makes the chair back 3 more stable under load, preventing it from tipping backward, and also provides a more stable mounting base for components such as the pin 7.

[0045] The front side of the connecting segment 3a fits snugly against the backrest 2. The front side of the connecting segment 3a is a concave arc surface, and the rear side is an outwardly curved surface. The left and right sides of the connecting segment 3a are inclined surfaces, and they smoothly transition to the front and rear sides. The concave arc surface design allows the backrest 2 to fit more tightly against the connecting segment 3a. The smooth transitions between the surfaces and the combination of curved and inclined surfaces make the backrest 3 appear more fluid and natural, enhancing the overall aesthetics of the product.

[0046] Two limiting strips 10 are vertically arranged on the rear side of the backrest 2. These limiting strips 10 are located on both sides of the connecting section 3a of the backrest 3. The inner surface of the limiting strips 10 is flush with the side of the backrest 3, and the inner surface of the limiting strips 10 is inclined. The design of the limiting strips 10 further restricts the relative movement trajectory between the backrest 2 and the backrest 3, ensuring that the backrest 2 can only move along a predetermined vertical direction, preventing the backrest 2 from shifting or tilting during adjustment. The cross-section of the limiting strips 10 is generally triangular. The close contact between the limiting strips 10 and the side of the backrest 3 improves the stability of the backrest 2 in a fixed position, reduces wobbling, and enhances safety during use.

[0047] The backrest 2 has two protruding posts 11 on its rear side, and a slider 12 is installed inside the slide rail 4. The two protruding posts 11 are inserted into the slide rail 4 and locked with the slider 12. The locking connection between the protruding posts 11 and the slider 12 makes the connection between the backrest 2 and the slide rail 4 more secure and reliable, able to withstand greater tension and pressure, and prevents the backrest 2 from loosening during use. When the slider 12 moves within the slide rail 4, it drives the backrest 2 to move up and down smoothly, avoiding wobbling or deviation during movement, thus improving comfort and safety.

[0048] The slider 12 has a racetrack-shaped structure and is adapted to the slide rail 4. The slider 12 can move up and down along the length of the slide rail 4. A cover plate 13 is provided on the rear side of the chair back 3, which covers the slide rail 4. The racetrack-shaped structure of the slider 12 adapts to the slide rail 4, making the slider 12 move more smoothly within the slide rail 4, reducing friction and wear, and improving the flexibility and durability of sliding. The cover plate 13 covers the slide rail 4, hiding the internal slider 12 and other components, making the chair back 3 look cleaner and more aesthetically pleasing. It also provides a certain degree of protection, preventing dust and debris from entering the slide rail 4 and affecting the sliding performance, and also preventing users from accidentally pinching their fingers.

[0049] A cushion 14 is provided on the front side of the backrest 2, and the cushion 14 is installed on the backrest 2 by snap-fit. Preferably, the cushion 14 is made of elastic material. The cushion 14 provides softer and more comfortable support for the user's back, and the elastic material can adapt to the back curves of different users, relieving fatigue from prolonged sitting. The snap-fit ​​installation method makes the installation and removal of the cushion 14 more convenient and quick, allowing the user to clean, replace, or adjust the position of the cushion 14 as needed.

[0050] The seat 1 has a cushion 15 on its top surface, which is attached to the seat 1 by clips. Preferably, the cushion 15 is made of elastic material. The cushion 15 can distribute the pressure on the user's buttocks, providing a more comfortable sitting experience. The elastic material of the cushion 15 also provides some cushioning, alleviating discomfort from prolonged sitting. The clip installation facilitates the removal and cleaning of the cushion 15, allowing the user to easily maintain and keep the seat clean.

[0051] The rest of the contents of Example 2 are the same as those of Example 1.

[0052] An adjustable backrest study desk and chair, as described in Embodiment 3, Figure 5 As shown, the system includes a base 16, a study table 17, and a study chair as described in Embodiment 1 or Embodiment 2. A chair leg 18 is located below the seat 1 of the study chair, with the bottom of the leg 18 inserted into the base 16. The study table 17 is mounted on the base 16 and is positioned in front of the study chair. The base 16 integrates the study table 17 and the study chair, resulting in a more stable overall structure and improved stability. This integrated design also facilitates overall transport and repositioning, saving space. Furthermore, the layout of the study table 17 and the study chair on the base 16 is reasonable and meets the needs of a learning environment.

[0053] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An adjustable learning chair, characterized in that, The chair includes a seat (1) and a backrest (2). The backrest (3) extends upward from the rear side of the seat (1). The seat (1) and the backrest (3) are integrally formed. The backrest (3) is provided with a slide rail (4) in the vertical direction. The backrest (2) is installed on the slide rail (4). The backrest (2) can move up and down along the slide rail (4) under force. At the contact surface between the backrest (2) and the backrest (3), multiple slots (5) are arranged in the vertical direction. A pin (7) is installed on the backrest (3) through an elastic element (6). The rear end of the pin (7) is located on the rear side of the backrest (3). The front end of the pin (7) passes through the backrest (3) and is inserted into one of the slots (5) under the action of the elastic element (6).

2. An adjustable learning chair according to claim 1, characterized in that The chair back (3) is provided with two slide rails (4) on the left and right sides along the vertical direction, and the pin (7) passes through the middle of the two slide rails (4).

3. The adjustable study chair according to claim 1, characterized in that, The upper part of the backrest (3) is a connecting section (3a), the slide rail (4) is set on the front side of the connecting section (3a), and the pin (7) is installed at the connecting section (3a); the cross-section of the connecting section (3a) is a trapezoidal frame structure, and the width of the rear side of the connecting section (3a) is greater than the width of the front side of the connecting section (3a).

4. An adjustable learning chair according to claim 3, wherein, The front side of the connecting section (3a) fits against the backrest (2). The front side of the connecting section (3a) is a concave arc surface, and the rear side of the connecting section (3a) is an outward curved surface. The left and right sides of the connecting section (3a) are inclined surfaces, and the left and right sides of the connecting section (3a) are smoothly connected to the front and rear sides.

5. An adjustable learning chair according to claim 1, wherein, The backrest (2) has two limiting strips (10) arranged vertically on the rear side. The limiting strips (10) are arranged on both sides of the connecting section (3a) of the backrest (3). The inner side of the limiting strip (10) is in contact with the side of the backrest (3). The inner side of the limiting strip (10) is an inclined surface.

6. An adjustable learning chair according to claim 1, wherein, The backrest (2) has two protruding pillars (11) on its rear side. A slider (12) is installed inside the slide rail (4). The two protruding pillars (11) are inserted into the slide rail (4) and locked with the slider (12).

7. An adjustable learning chair according to claim 6, characterized in that The slider (12) has a racetrack-shaped structure and is adapted to the slide rail (4). The slider (12) can move up and down along the length of the slide rail (4). The back of the chair (3) is provided with a cover plate (13) which covers the slide rail (4).

8. An adjustable learning chair according to claim 1, wherein, A cushion (14) is provided on the front side of the backrest (2), and the cushion (14) is installed on the backrest (2) by a buckle.

9. An adjustable learning chair according to claim 1, wherein, The top surface of the chair seat (1) is provided with a cushion (15), which is installed on the chair seat (1) by a buckle.

10. An adjustable learning desk and chair, characterized in that, The study includes a base (16), a study table (17), and a study chair as described in any one of claims 1-9. The study chair has a leg (18) below the seat (1), and the bottom of the leg (18) is inserted into the base (16). The study table (17) is mounted on the base (16) and is located in front of the study chair.

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