An expandable learning chair

Abstract

This utility model provides an expandable study chair, belonging to the field of chair technology. The expandable study chair includes a seat cushion, a backrest disposed on the upper side of the seat cushion, an adaptive push rod disposed inside the backrest, an angle adjustment component fixedly connected to the front end of the adaptive push rod, a first rotating shaft rotatably connected inside the adaptive push rod, and a lumbar support fixedly connected to the circumferential surface of the first rotating shaft. This utility model, through adaptive lumbar support, can automatically adjust according to the user's body shape and sitting posture, providing optimal lumbar support, reducing discomfort caused by prolonged sitting, while maintaining the natural curve of the spine, effectively preventing spinal curvature and other related health problems caused by poor posture.

Description

Technical Field

[0001] This utility model belongs to the field of seating technology, specifically relating to an unfoldable learning chair. Background Technology

[0002] Seats are essential items in schools. Students use seats for most of their time at school, making them an indispensable piece of teaching hardware.

[0003] In the existing technology, traditional unfoldable learning chairs, due to the lack of adaptive support functions, may not be able to meet the needs of modern consumers for versatility and personalization, resulting in a poor user experience and affecting the market acceptance and sales performance of the product. Utility Model Content

[0004] The purpose of this invention is to provide a deployable learning chair, which aims to solve the problem that traditional deployable learning chairs in the prior art lack adaptive support functions.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An unfoldable learning chair includes:

[0007] cushion;

[0008] A dynamic lumbar support mechanism is provided on the upper side of the seat cushion. The dynamic lumbar support mechanism includes a backrest, an adaptive push rod, an angle adjustment component, a first rotating shaft, and a lumbar support. The backrest is provided on the upper side of the seat cushion. The adaptive push rod is provided inside the backrest. The angle adjustment component is fixedly connected to the front end of the adaptive push rod. The first rotating shaft is rotatably connected inside the adaptive push rod. The lumbar support is fixedly connected to the circumferential surface of the first rotating shaft.

[0009] An adaptive mechanism is located on the rear side of the dynamic waist support mechanism;

[0010] An unfolding mechanism is located on the underside of the seat cushion.

[0011] In a preferred embodiment of this utility model, the adaptive mechanism includes a sliding member, a slider, a spring, and a telescopic rod. The sliding member is fixedly connected to the backrest, the slider is slidably connected to the sliding member, the slider is fixedly connected to the rear end of the adaptive push rod, the spring is fixedly connected to the rear end of the slider, and the telescopic rod is fixedly connected to the spring.

[0012] As a preferred embodiment of this utility model, the unfolding mechanism includes unfolding components, second rotating shafts, flipping components, and additional extension tables. Both unfolding components are fixedly connected to the lower end of the seat cushion, both second rotating shafts are rotatably connected inside the two unfolding components, both flipping components are fixedly connected to the circumferential surfaces of the two second rotating shafts, and both additional extension tables are fixedly connected to one end of the two flipping components.

[0013] As a preferred embodiment of this utility model, the rear end of the seat cushion is fixedly connected to a fixing mounting component, a malleable support component is fixedly connected inside the fixing mounting component, and a backrest is fixedly connected to the front end of the malleable support component.

[0014] As a preferred embodiment of this utility model, locking elements are slidably connected within the plurality of seat cushions and the second pivot.

[0015] As a preferred embodiment of this utility model, the upper end of each seat cushion is fixedly connected to two armrests.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] I. In this solution, the present invention uses adaptive lumbar support, which can automatically adjust according to the user's body shape and sitting posture to provide optimal lumbar support, reduce discomfort caused by sitting for a long time, and maintain the natural curve of the spine, effectively preventing spinal curvature and other related health problems caused by poor sitting posture.

[0018] Second, in this solution, when the user sits back against the backrest, the back pressure acts on the adaptation push rod, causing it to shift and simultaneously drive the first rotating shaft to rotate, thereby making the lumbar support automatically conform to the curve of the human waist and provide dynamic support. This linkage mechanism can not only adapt to the sitting posture changes of users of different body types, but also maintain the natural physiological curvature of the spine during long-term use, effectively relieving fatigue and lower back discomfort caused by poor sitting posture. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a frontal perspective view of the present invention;

[0021] Figure 2 This is a rear-view perspective view of the present invention;

[0022] Figure 3 This is a first exploded perspective view of the present invention;

[0023] Figure 4This is a second exploded perspective view of the present invention;

[0024] In the diagram: 1. Seat cushion; 2. Backrest; 3. Adaptive push rod; 4. Angle adjustment component; 5. First pivot; 6. Lumbar support; 7. Matching sliding component; 8. Slider; 9. Spring; 10. Telescopic rod; 11. Fixed mounting component; 12. Flexible support component; 13. Unfolding component; 14. Second pivot; 15. Flip-up component; 16. Additional extension table; 17. Locking component; 18. Armrest. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1-4 The present invention provides the following technical solution:

[0028] An unfoldable learning chair includes:

[0029] Seat cushion 1;

[0030] The dynamic lumbar support mechanism is located on the upper side of the seat cushion 1. The dynamic lumbar support mechanism includes a backrest 2, an adaptive push rod 3, an angle adjustment component 4, a first rotating shaft 5, and a lumbar support 6. The backrest 2 is located on the upper side of the seat cushion 1. The adaptive push rod 3 is located inside the backrest 2. The angle adjustment component 4 is fixedly connected to the front end of the adaptive push rod 3. The first rotating shaft 5 is rotatably connected to the adaptive push rod 3. The lumbar support 6 is fixedly connected to the circumferential surface of the first rotating shaft 5.

[0031] An adaptive mechanism is located at the rear of the dynamic lumbar support mechanism.

[0032] The unfolding mechanism is located on the underside of the seat cushion 1.

[0033] In a specific embodiment of this utility model, the dynamic lumbar support mechanism consists of a backrest 2, an adaptive push rod 3, an angle adjustment component 4, a first rotating shaft 5, and a lumbar support 6. Its core lies in achieving adaptive support for the lumbar position through the linkage of mechanical structures. The backrest 2 is fixed to the upper part of the seat cushion 1, serving as the overall support base. It contains a retractable and movable adaptive push rod 3, which can move forward and backward according to the pressure applied by the user's back. The angle adjustment component 4 is rigidly connected to the front end of the adaptive push rod 3, used to set and adjust the initial angle of the push rod. The first rotating shaft 5 is installed inside the adaptive push rod 3 and can rotate around its axis. The lumbar support 6 is fixedly sleeved on the outside of the first rotating shaft 5 and deflects synchronously with the push rod during its movement. When the user sits on the backrest 2, the back pressure acts on the adaptive push rod 3, causing it to shift and simultaneously driving the first rotating shaft 5 to rotate. This allows the lumbar support 6 to automatically conform to the curve of the human lumbar region, providing dynamic support. This linkage mechanism not only adapts to the changing sitting postures of users of different body types but also maintains the natural physiological curvature of the spine during prolonged use, effectively relieving fatigue and lumbar discomfort caused by poor posture.

[0034] Please refer to the details. Figures 1-4 The adaptive mechanism includes a sliding member 7, a slider 8, a spring 9, and a telescopic rod 10. The sliding member 7 is fixedly connected to the backrest 2, the slider 8 is slidably connected to the sliding member 7, the slider 8 is fixedly connected to the rear end of the adaptive push rod 3, the spring 9 is fixedly connected to the rear end of the slider 8, and the telescopic rod 10 is fixedly connected to the spring 9.

[0035] In this embodiment, the adaptive mechanism consists of a sliding member 7, a slider 8, a spring 9, and a telescopic rod 10. The sliding member 7 is fixedly installed inside the backrest 2 as a sliding guide structure. The slider 8 is embedded inside the sliding member 7 and can slide along its track to transmit and respond to external forces. The rear end of the slider 8 is rigidly connected to the adaptive push rod 3, allowing it to move synchronously with the displacement of the adaptive push rod 3. One end of the spring 9 is fixed to the rear side of the slider 8, and the other end is connected to the telescopic rod 10, forming an elastic reset structure. When pressure is applied to the user's back, the slider 8 causes the spring 9 to compress and deform, absorbing pressure fluctuations and providing rebound force. This allows the adaptive push rod 3 to automatically adjust its support position according to the back shape. At the same time, the telescopic rod 10 maintains the stability of the structure's operation. This linkage mechanism effectively improves the seat's adaptability to different body types and sitting postures, enhancing comfort and dynamic support during use.

[0036] Please refer to the details. Figures 1-4The unfolding mechanism includes unfolding components 13, second rotating shafts 14, flipping components 15, and additional extension tables 16. Both unfolding components 13 are fixedly connected to the lower end of the seat cushion 1. Both second rotating shafts 14 are rotatably connected inside the two unfolding components 13. Both flipping components 15 are fixedly connected to the circumferential surface of the two second rotating shafts 14. Both additional extension tables 16 are fixedly connected to one end of the two flipping components 15.

[0037] In this embodiment, the unfolding mechanism consists of unfolding components 13, second rotating shafts 14, flipping components 15, and additional extension tables 16. Two unfolding components 13 are fixedly installed at the lower end of the seat cushion 1 as a support base. Two second rotating shafts 14 are respectively rotatably installed inside the two unfolding components 13 to transmit rotational motion. Two flipping components 15 are fixedly sleeved on the outer periphery of the second rotating shafts 14 and can rotate synchronously with the shafts. Two additional extension tables 16 are fixedly connected to one end of the two flipping components 15. During the unfolding process, the additional extension tables 16 are unfolded outward from the folded state and locked to a horizontal position by rotating the flipping components 15 around the second rotating shafts 14. This structure uses mechanical rotation to achieve stable unfolding and storage of the table body, improving the functional expandability and space utilization of the seat during use, while simplifying the operation process and enhancing the applicability of the equipment in limited spaces.

[0038] Please refer to the details. Figures 1-4 The rear end of the seat cushion 1 is fixedly connected to a fixing mounting part 11, and a malleable support part 12 is fixedly connected inside the fixing mounting part 11. The front end of the malleable support part 12 is fixedly connected to a backrest 2.

[0039] In this embodiment: the fixed mounting component 11 serves as the structural support base, and a malleable support component 12 is fixedly connected inside. The front end of the malleable support component 12 is rigidly connected to the backrest 2. When the user applies back pressure, the malleable support component 12 can undergo slight deformation according to the force state, thereby adapting to the curve of the human back and providing uniform support. This structure achieves stable connection and dynamic response of the backrest 2 through the combination of the fixed mounting component 11 and the malleable support component 12. While ensuring structural strength, it improves the seat's adaptability to human posture and enhances comfort and support effectiveness during use.

[0040] Please refer to the details. Figures 1-4 Each of the multiple seat cushions 1 and the second pivot 14 is slidably connected to a locking element 17.

[0041] In this embodiment: the locking member 17 can slide along a set path inside the seat cushion 1 and the second rotating shaft 14. When the unfolding mechanism is in the unfolded state, the locking member 17 is inserted into the corresponding limiting hole or slot through the fitting structure to fix the flipping member 15 and the additional extension table 16. During the folding process, the locking member 17 is retracted from the limiting position by external force, so that the second rotating shaft 14 can rotate freely and drive the extension table to complete the folding action. This linkage method improves the structural stability and operation convenience of the seat during use through mechanical locking and releasing, ensures that the functional components remain reliably fixed in the unfolded state, and can be quickly released when stored, thus enhancing the practicality and safety of the equipment.

[0042] Please refer to the details. Figures 1-4 The upper part of the seat cushion 1 is fixedly connected to two armrests 18.

[0043] In this embodiment, by rigidly mounting the armrests 18 on both sides of the seat cushion 1, the user is provided with arm support and body balance assistance. In the sitting position, the armrests 18 can share the pressure on the upper limbs, reduce the load on the shoulders, neck and waist, and provide a stable fulcrum when getting up or adjusting the posture. This design enhances the stability and comfort of the seat during use.

[0044] The working principle and usage process of this utility model: After the user sits on the seat cushion 1, the back applies pressure to the backrest 2. Under the pressure, the adaptation push rod 3 drives the angle adjustment component 4 to move, and the first rotating shaft 5 rotates accordingly, driving the lumbar support 6 to conform to the waist curve, realizing the dynamic support function. At the same time, the sliding component 7 inside the backrest 2 responds to the movement of the push rod 3 through the slider 8. The spring 9 and the telescopic rod 10 work together to provide elastic restoring force, so that the support structure can automatically adapt to different body shapes and sitting postures. When the learning function is needed, the flip component 15 is pushed to rotate around the second rotating shaft 14, and the additional extension table 16 unfolds to a horizontal position synchronously with the flip component 15. In the extended tabletop, the locking element 17 is inserted into the limiting structure to complete the fixation. When folding up, the locking element 17 can be released by reversing the operation, allowing the extended tabletop to fold back. Throughout the process, the fixed mounting element 11 and the malleable support element 12 maintain a stable connection with the backrest 2, enhancing the uniformity and adaptability of the back support. The armrests 18 provide auxiliary support for the arms, improving the overall comfort and functionality. This utility model, through adaptive lumbar support, can automatically adjust according to the user's body shape and sitting posture, providing optimal lumbar support, reducing discomfort caused by prolonged sitting, and maintaining the natural curve of the spine, effectively preventing spinal curvature and other related health problems caused by poor posture.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An unfoldable learning chair, characterized in that... include: Seat cushion (1); A dynamic lumbar support mechanism is provided on the upper side of the seat cushion (1). The dynamic lumbar support mechanism includes a backrest (2), an adaptation push rod (3), an angle adjustment component (4), a first rotating shaft (5), and a lumbar support (6). The backrest (2) is provided on the upper side of the seat cushion (1). The adaptation push rod (3) is provided inside the backrest (2). The angle adjustment component (4) is fixedly connected to the front end of the adaptation push rod (3). The first rotating shaft (5) is rotatably connected inside the adaptation push rod (3). The lumbar support (6) is fixedly connected to the circumferential surface of the first rotating shaft (5). An adaptive mechanism is provided on the rear side of the dynamic waist support mechanism. The adaptive mechanism includes a sliding member (7), a slider (8), a spring (9), and a telescopic rod (10). The sliding member (7) is fixedly connected to the backrest (2). The slider (8) is slidably connected to the sliding member (7). The slider (8) is fixedly connected to the rear end of the adaptive push rod (3). The spring (9) is fixedly connected to the rear end of the slider (8). The telescopic rod (10) is fixedly connected to the spring (9). An unfolding mechanism is located on the underside of the seat cushion (1).

2. The unfoldable learning chair according to claim 1, characterized in that: The unfolding mechanism includes unfolding components (13), second pivots (14), flipping components (15), and additional extension tables (16). The two unfolding components (13) are fixedly connected to the lower end of the cushion (1). The two second pivots (14) are rotatably connected to the two unfolding components (13). The two flipping components (15) are fixedly connected to the circumferential surfaces of the two second pivots (14). The two additional extension tables (16) are fixedly connected to one end of the two flipping components (15).

3. The unfoldable learning chair according to claim 2, characterized in that: The rear end of the cushion (1) is fixedly connected to a fixing mounting part (11), and a malleable support part (12) is fixedly connected inside the fixing mounting part (11). The front end of the malleable support part (12) is fixedly connected to a backrest (2).

4. The unfoldable learning chair according to claim 3, characterized in that: Each of the multiple seat cushions (1) and the second pivot (14) is slidably connected with a locking element (17).

5. The unfoldable learning chair according to claim 4, characterized in that: The upper end of each seat cushion (1) is fixedly connected to two armrests (18).

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