Anti-humpback study desk and chair

Abstract

The utility model relates to the field of study desks and chairs, and discloses an anti-humpback study desk and chair which comprises a desk plate and a seat cushion, the bottom surface of the desk plate is fixedly connected with desk legs which are correspondingly arranged on two sides, the bottom surface of the seat cushion is fixedly connected with an L-shaped supporting pipe, the lower end of the L-shaped supporting pipe is fixedly connected with lifting chair legs, and the lower ends of the desk legs on two sides are provided with moving mechanisms for driving the lifting chair legs to slide. A connecting sleeve is slidably connected to one side in the L-shaped supporting pipe, a lifting mechanism for driving the connecting sleeve to slide is arranged in the L-shaped supporting pipe, a connecting column is slidably inserted into one end of the connecting sleeve, the end, extending out of the connecting sleeve, of the connecting column is fixedly connected with a seat backrest, and a groove is formed in the end, away from the seat backrest, of the connecting column; a first spring is fixedly connected between one end in the groove and the inner wall of the connecting sleeve, and a locking mechanism matched with the connecting column is arranged on the connecting sleeve. Compared with the prior art, the anti-humpback desk and chair has the advantage of being capable of effectively preventing a bad humpback sitting posture of a student sitting on the desk and chair.

Description

Technical Field

[0001] The utility model relates to the technical field of study desks and chairs, in particular to an anti-hump study desk and chair. Background Technique

[0002] In recent years, due to problems such as children's bad learning habits, there are more and more children with humps. Humpback not only affects the overall aesthetic feeling, but also directly or indirectly affects the normal physical and mental development of children. The humpback problem will also affect the confidence of children. The biggest reason for humpback is the sitting posture problem of students in daily study.

[0003] The seat back of the existing study desk and chair is a fixed mechanism. When students sit on the seat to study, the backrest is difficult to support the back, which easily leads to back fatigue and forms a humpback. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is that the existing study desk and chair cannot effectively support the back, which easily leads to humpback.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the technical solution provided by the utility model is: an anti-hump study desk and chair, including a tabletop and a seat cushion. The bottom surface of the tabletop is fixedly connected with table legs arranged correspondingly on both sides. The bottom surface of the seat cushion is fixedly connected with an L-shaped support tube. The lower end of the L-shaped support tube is fixedly connected with a lifting chair leg. A moving mechanism for driving the lifting chair leg to slide is arranged at the lower ends of the two table legs. One side inside the L-shaped support tube is slidably connected with a connecting sleeve. An elevating mechanism for driving the connecting sleeve to slide is arranged inside the L-shaped support tube. One end of the connecting sleeve is slidably inserted with a connecting column. The end of the connecting column extending outside the connecting sleeve is fixedly connected with a seat backrest. A groove is arranged at one end of the connecting column away from the seat backrest. A first spring is fixedly connected between one end inside the groove and the inner wall of the connecting sleeve. A locking mechanism for cooperating with the connecting column is arranged on the connecting sleeve.

[0008] As an improvement, the locking mechanism includes a fixed box fixedly connected to one end of the connecting sleeve. A through hole is arranged through between the fixed box and the connecting sleeve. A lock tongue is slidably inserted in the through hole. There are not less than one locking hole on the outer wall of the connecting column. A second spring is fixedly connected between the lower end of the lock tongue and the inner wall of the fixed box. The lower end of the lock tongue is fixedly connected with an adjusting cloth belt. A through hole for cooperating with the adjusting cloth belt is arranged at the lower end of the fixed box.

[0009] As an improvement, a damper located in the groove is fixedly connected between the connecting column and the connecting sleeve.

[0010] As an improvement, the lifting mechanism includes a screw rod rotatably connected inside the L-shaped support pipe and arranged in the height direction. An elevator block is threadedly connected to the outer wall of the screw rod. A sliding hole cooperating with the elevator block is provided on one side of the L-shaped support pipe. One end of the elevator block extending outside the sliding hole is fixedly connected to the connecting sleeve. A driven bevel gear is fixedly connected to the lower end of the screw rod. A driving bevel gear meshing with the driven bevel gear is rotatably connected inside the L-shaped support pipe. A knob for driving the driving bevel gear to rotate is provided on one side of the L-shaped support pipe.

[0011] As an improvement, the moving mechanism includes slide rails fixedly connected to the inner sides of the two table legs. The lifting chair legs are slidably connected between the two slide rails. A fixing plate is fixedly connected between the two table legs. An electric push rod is fixedly connected between the fixing plate and the lifting chair legs.

[0012] As an improvement, a footrest is fixedly connected between the two table legs and located above the electric push rod.

[0013] (III) Advantageous Effects

[0014] The advantages of the present utility model compared with the prior art are as follows:

[0015] (1) The height of the seat back can be adjusted through the lifting mechanism. Under the elastic force of the first spring, the connecting column is pushed to slide out of the connecting sleeve, so that the seat back closely adheres to the back. When the back posture is straightened, the connecting column is fixed through the locking mechanism, enabling students to always maintain a correct sitting posture.

[0016] (2) The distance between the seat cushion and the table board can be effectively adjusted through the moving mechanism. After the adjustment is completed, the distance between the seat cushion and the table board remains fixed, reducing the change in sitting posture. Description of the Drawings

[0017] Figure 1 is an exploded view of an anti-humpback learning desk and chair of the present utility model.

[0018] Figure 2 is a structural schematic diagram of an anti-humpback learning desk and chair of the present utility model.

[0019] Figure 3 is a cross-sectional view of an anti-humpback learning desk and chair of the present utility model.

[0020] Figure 4 is an enlarged view of part A of an anti-humpback learning desk and chair of the present utility model.

[0021] Figure 5 is a structural schematic diagram of the connecting sleeve of an anti-humpback learning desk and chair of the present utility model.

[0022] Figure 6This is a schematic diagram of the seat back structure of an anti-hump learning desk and chair of the present utility model.

[0023] Figure 7 This is a schematic diagram of the tongue structure of an anti-hump learning desk and chair of the present utility model.

[0024] As shown in the figure: 1. Table board; 2. Seat cushion; 3. Table legs; 4. Lifting chair legs; 5. L-shaped support tube; 6. Connecting sleeve; 7. Connecting column; 8. Fixed box; 9. Lock tongue; 10. Adjusting cloth belt; 11. Groove; 12. Lock hole; 13. Seat back; 14. First spring; 15. Damper; 16. Screw; 17. Driving bevel gear; 18. Driven bevel gear; 19. Knob; 20. Electric push rod; 21. Slide hole; 22. Slide rail; 23. Footrest; 24. Second spring; 25. Fixed plate; 26. Lifting block. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figures 1 to 7 shown, an anti-hump learning desk and chair includes a table board 1 and a seat cushion 2. The bottom surface of the table board 1 is fixedly connected with table legs 3 arranged correspondingly on both sides. The bottom surface of the seat cushion 2 is fixedly connected with an L-shaped support tube 5. The lower end of the L-shaped support tube 5 is fixedly connected with lifting chair legs 4. A moving mechanism for driving the lifting chair legs 4 to slide is provided at the lower ends of the two table legs 3. The moving mechanism includes slide rails 22 fixedly connected to the inner sides of the two table legs 3. The lifting chair legs 4 are slidably connected between the two slide rails 22. A fixed plate 25 is fixedly connected between the two table legs 3. An electric push rod 20 is fixedly connected between the fixed plate 25 and the lifting chair legs 4. A footrest 23 is fixedly connected between the two table legs 3 and is located above the electric push rod 20.

[0027] A connecting sleeve 6 is slidably connected to one side inside the L-shaped support tube 5. An elevating mechanism for driving the sliding of the connecting sleeve 6 is provided inside the L-shaped support tube 5. The elevating mechanism includes a screw rod 16 rotatably connected inside the L-shaped support tube 5 and arranged along the height direction. The outer wall of the screw rod 16 is threadedly connected with a lifting block 26. A sliding hole 21 cooperating with the lifting block 26 is provided on one side of the L-shaped support tube 5. One end of the lifting block 26 extending outside the sliding hole 21 is fixedly connected to the connecting sleeve 6. The lower end of the screw rod 16 is fixedly connected with a driven bevel gear 18. A driving bevel gear 17 meshing with the driven bevel gear 18 is rotatably connected inside the L-shaped support tube 5. A knob 19 for driving the rotation of the driving bevel gear 17 is provided on one side of the L-shaped support tube 5.

[0028] A connecting column 7 is slidably inserted into one end of the connecting sleeve 6. One end of the connecting column 7 extending outside the connecting sleeve 6 is fixedly connected to a seat back 13. A groove 11 is provided at one end of the connecting column 7 away from the seat back 13. A first spring 14 is fixedly connected between one end inside the groove 11 and the inner wall of the connecting sleeve 6. A damper 15 located inside the groove 11 is fixedly connected between the connecting column 7 and the connecting sleeve 6. A locking mechanism cooperating with the connecting column 7 is provided on the connecting sleeve 6. The locking mechanism includes a fixed box 8 fixedly connected to one end of the connecting sleeve 6. A through hole is provided between the fixed box 8 and the connecting sleeve 6. A locking tongue 9 is slidably inserted into the through hole. There are no less than one locking holes 12 on the outer wall of the connecting column 7. A second spring 24 is fixedly connected between the lower end of the locking tongue 9 and the inner wall of the fixed box 8. An adjusting cloth belt 10 is fixedly connected to the lower end of the locking tongue 9. A through hole cooperating with the adjusting cloth belt 10 is provided at the lower end of the fixed box 8.

[0029] In specific use, after sitting on the seat cushion 2, adjust the height of the seat cushion 2 by the lifting chair legs 4. After the user sits upright, turn the knob 19 to drive the driving bevel gear 17 to rotate. The driving bevel gear 17 drives the driven bevel gear 18 to rotate. The driven bevel gear 18 drives the screw rod 16 to rotate, so that the lifting block 26 drives the seat backrest 13 to move up and down, and the seat backrest 13 is moved to a position flush with the backboard. Pull the adjusting belt 10 to make the locking tongue 9 extend out of the locking hole 12, and the second spring 24 is compressed and deformed. Under the restoring elastic force of the first spring 14, the connecting column 7 extends out of the connecting sleeve 6. The damper 15 is used to prevent the large-scale telescopic swing of the connecting column 7, so that the seat backrest 13 closely adheres to the back. Swing the back back and forth to adjust to a proper sitting posture. When leaning back, the connecting column 7 compresses the first spring 14 and is deformed. After adjusting to a proper sitting posture, loosen the adjusting belt 10. Under the restoring elastic force of the second spring 24, the locking tongue 9 is pushed through the jack and extends into the corresponding locking hole 12. If the locking tongue 9 fails to insert into the locking hole 12, the extended length of the seat backrest 13 can be finely adjusted to make the locking tongue 9 insert into the locking hole 12 to fix the seat backrest. Pull the seat towards the table board 1 by the electric push rod 20. Under the limitation of the two side slide rails 22, the distance between the seat and the table board 1 is kept fixed, reducing the activity space of the user, making his back closely adhere to the seat backrest 13, maintaining the stability of the sitting posture and preventing hunchback.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0032] The above description of the present invention and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An anti-hunchback study desk and chair, comprising a tabletop (1) and a seat cushion (2). The bottom surface of the tabletop (1) is fixedly connected with table legs (3) arranged correspondingly on both sides. It is characterized in that: The bottom surface of the seat cushion (2) is fixedly connected with an L-shaped support tube (5). The lower end of the L-shaped support tube (5) is fixedly connected with a lifting chair leg (4). A moving mechanism for driving the sliding of the lifting chair leg (4) is provided at the lower ends of the two table legs (3). One side inside the L-shaped support tube (5) is slidably connected with a connecting sleeve (6). An elevating mechanism for driving the sliding of the connecting sleeve (6) is provided inside the L-shaped support tube (5). One end of the connecting sleeve (6) is slidably inserted with a connecting column (7). The end of the connecting column (7) extending outside the connecting sleeve (6) is fixedly connected with a seat back (13). A groove (11) is provided at one end of the connecting column (7) away from the seat back (13). A first spring (14) is fixedly connected between one end inside the groove (11) and the inner wall of the connecting sleeve (6). A locking mechanism cooperating with the connecting column (7) is provided on the connecting sleeve (6).

2. The anti-hunchback study desk and chair according to claim 1, characterized in that: The locking mechanism includes a fixed box (8) fixedly connected to one end of the connecting sleeve (6). A through hole is provided between the fixed box (8) and the connecting sleeve (6). A locking tongue (9) is slidably inserted into the through hole. There are not less than one locking holes (12) on the outer wall of the connecting column (7). A second spring (24) is fixedly connected between the lower end of the locking tongue (9) and the inner wall of the fixed box (8). The lower end of the locking tongue (9) is fixedly connected with an adjusting cloth belt (10). A through hole cooperating with the adjusting cloth belt (10) is provided at the lower end of the fixed box (8).

3. The anti-hump study desk and chair according to claim 1, characterized in that: A damper (15) is fixedly connected between the connecting column (7) and the connecting sleeve (6) and is located inside the groove (11).

4. A learning desk and chair for preventing hunchback according to claim 1, characterized in that: The elevating mechanism includes a screw rod (16) rotatably connected inside the L-shaped support tube (5) and arranged along the height direction. The outer wall of the screw rod (16) is threadedly connected with a lifting block (26). A sliding hole (21) cooperating with the lifting block (26) is provided on one side of the L-shaped support tube (5). The end of the lifting block (26) extending outside the sliding hole (21) is fixedly connected with the connecting sleeve (6). The lower end of the screw rod (16) is fixedly connected with a driven bevel gear (18). A driving bevel gear (17) meshing with the driven bevel gear (18) is rotatably connected inside the L-shaped support tube (5). A knob (19) for driving the rotation of the driving bevel gear (17) is provided on one side of the L-shaped support tube (5).

5. The anti-hump study desk and chair according to claim 1, characterized in that: The moving mechanism includes slide rails (22) fixedly connected to the inner sides of the two table legs (3). The lifting chair leg (4) is slidably connected between the two slide rails (22). A fixing plate (25) is fixedly connected between the two table legs (3). An electric push rod (20) is fixedly connected between the fixing plate (25) and the lifting chair leg (4).

6. The anti-hump study desk and chair according to claim 5, characterized in that: A footrest (23) is fixedly connected between the two table legs (3) and is located above the electric push rod (20).

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