Student desk and chair with spine protection and waist support

Abstract

The invention relates to the technical field of desks and chairs, in particular to a student desk and chair with a spine protection waist support, which comprises a cushion and a desk, the two sides of the lower surface of the cushion are respectively and fixedly connected with a cushion frame, the front end of the cushion frame is fixedly provided with a front leg, the rear end of the cushion frame is fixedly connected with a connecting block, and the lower end of the connecting block is rotatably connected with a rear leg. The surfaces, away from each other, of the connecting blocks on the two sides are fixedly connected with a vertical check block, a thin check block and a thick check block respectively, the surface of one side of the rear leg is connected with a transmission rod through an elastic mechanism, and the upper end of the transmission rod is clamped between the vertical check block and the thin check block in a sliding mode. The adjustment of the rear legs is convenient; the wheel bodies can be limited at the same time when the adjustment is completed, so that the wheel bodies are prevented from sliding when the user lies down; the lower part of the desk can be used for supporting the positions of the feet, so that the legs are released and naturally bent, and the stability of the user when the user lies down is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tables and chairs, and in particular to a student desk and chair with a spine-protecting lumbar support. Background Art

[0002] Student desks and chairs are mainly used for learning, and their structure and function are not suitable for lying down to rest. If students lie down in a relatively flat position, their chests will be compressed, which will affect the expansion of the lungs and may cause breathing difficulties. Lying down immediately after a meal may also cause gastroesophageal reflux and affect digestion.

[0003] The posture of students lying on the table to rest will cause the abdomen to be squeezed, the gastrointestinal motility will be hindered, the efficiency of food digestion and absorption will be reduced, and it may cause indigestion symptoms such as bloating, stomach pain, nausea, etc., which may affect the health of the digestive system in the long run.

[0004] However, the existing desks and chairs cannot allow users to rest in a semi-reclining position. The use of e-sports chairs can meet the semi-reclining demand, but they take up a large space and are not suitable for student desks and chairs. Therefore, a student desk and chair with a spine protection lumbar support is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a student desk and chair with a spine protection lumbar support.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a student desk and chair with a spine protection lumbar support, comprising a seat cushion and a desk, the lower surface of the seat cushion is respectively fixedly connected with a cushion frame, the front end of the cushion frame is fixedly installed with a front leg, the rear end of the cushion frame is fixedly connected with a connecting block, the lower end of the connecting block is rotatably connected with a rear leg, the sides of the connecting blocks on both sides that are away from each other are respectively fixedly connected with a vertical stopper, a thin stopper and a thick stopper, one side surface of the rear leg is connected with a transmission rod through an elastic mechanism, the upper end of the transmission rod is slidably inserted between the vertical stopper and the thin stopper, the lower end of the rear leg is rotatably installed with a wheel body, the lower end of the transmission rod is fixedly connected with a connecting plate, and a meshing mechanism is provided between the connecting plate and one side of the wheel body;

[0007] The lower surface of the desk is fixedly connected with two table legs, a bottom cross frame is fixedly installed at the lower end between the two table legs, and two pedal mechanisms are arranged on the outer surface of the bottom cross frame.

[0008] Preferably, the upper end surface of the rear leg is fixedly connected to a rotating block, a connecting column is fixedly inserted on one side surface of the rotating block, one end of the connecting column rotates through the inner side of the connecting block and is fixedly connected to a terminal block, and the terminal block and the rotating block are respectively located on both sides of the connecting block.

[0009] Preferably, the elastic mechanism includes a sliding groove formed in the lower surface of the terminal block. The upper end of the transmission rod is slidably inserted into the inner side of the sliding groove. A moving column is fixedly connected to the upper end of one side surface of the transmission rod. The moving column slidably penetrates the inner wall of the sliding groove, and an L-shaped plate is fixedly connected to the protruding end of the moving column. A pulling rod is fixedly connected to the lower surface of the L-shaped plate. A compression spring is sleeved on the outer surface of the moving column, and the compression spring is located inside the sliding groove.

[0010] Preferably, two limiting strips are fixedly connected to one side surface of the hind leg, and the transmission rod is slidably inserted between the two limiting strips.

[0011] Preferably, a wheel frame is fixedly connected to the lower end of the hind leg. A wheel shaft is fixedly penetrated through the middle of the wheel body, and both ends of the wheel shaft respectively rotate and penetrate through both side surfaces of the wheel frame.

[0012] Preferably, the meshing mechanism includes a connecting plate fixedly connected to the lower end of the transmission rod. A plurality of meshing blocks arranged in a circular array are fixedly connected to one side surface of the connecting plate. A plurality of array blocks arranged in a circular array are fixedly connected to the end surface of the wheel shaft. Two symmetrical inclined cutting surfaces are formed on the outer surface of the array block, and straight cutting surfaces are respectively formed on the sides away from each other of the two inclined cutting surfaces. Each meshing block is slidably inserted between two adjacent straight cutting surfaces.

[0013] Preferably, a backrest is fixedly connected to the rear side of the seat cushion. A lumbar cushion is fixedly installed at the lower end of the front surface of the backrest. A back plate is fixedly connected to the upper end of the backrest, and two symmetrical neck pillows are fixedly connected to the upper end of the back plate.

[0014] Preferably, the stepping mechanism includes a sleeve block slidably sleeved on the outer surface of the bottom cross frame. A bent rod slidably penetrates through the inside of the sleeve block. A grounding plate is fixedly connected to the lower end of the bent rod. A stepping pedal is arranged at the upper end of the bent rod. Two connecting seats are fixedly connected to the lower surface of the stepping pedal, and the connecting seats are located on both sides of the bent rod. Rear connecting shafts are respectively fixedly connected to the upper ends of both side surfaces of the bent rod, and the connecting shafts rotate and penetrate through the inside of the connecting seats.

[0015] Preferably, a clamping groove is formed on the outer surface of the bent rod. A clamping plate is fixedly connected to the inner top surface of the sleeve block, and the clamping plate is slidably inserted into the inside of the clamping groove. A fixing column is fixedly connected to the inside of the clamping groove, and two return springs are sleeved on the outer surface of the fixing column. The return springs are respectively located on the front and rear surfaces of the clamping plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can change the angle of the hind legs so that the user can rest in a semi-reclined position.

[0018] 2. The hind legs of the present invention are conveniently adjustable, and the wheel body can be limited simultaneously when the adjustment is completed to prevent sliding when lying down;

[0019] 3. The space under the desk of the present invention can be used to support the feet, enabling the legs to be relaxed and naturally bent, ensuring the stability of the user when maintaining a lying-down position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0021] Figure 2 It is a schematic partial structural diagram of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0022] Figure 3 It is a Figure 2 magnified view of part A in a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0023] Figure 4 It is a schematic diagram of the lower end of the hind leg of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0024] Figure 5 It is a partial cross-sectional view of the connecting block of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0025] Figure 6 It is a Figure 5 magnified view of part B in a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0026] Figure 7 It is a schematic diagram of the cushion rack of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0027] Figure 8 It is a schematic diagram of the connecting plate of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0028] Figure 9 It is a schematic diagram of the wheel body of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0029] Figure 10 It is a Figure 9 magnified view of part C in a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0030] Figure 11 It is a cross-sectional view of the sleeve block of a student desk and chair with a spinal cord protection lumbar support according to the present invention;

[0031] Figure 12 It is a Figure 11 magnified view of part D in a student desk and chair with a spinal cord protection lumbar support according to the present invention.

[0032] Among them: 1. Cushion; 2. Cushion frame; 3. Front legs; 4. Rear legs; 5. Connecting block; 6. Rotating block; 7. Connecting column; 8. End block; 9. Slide; 10. Transmission rod; 11. Moving column; 12. Compression spring; 13. L-shaped plate; 14. Pull rod; 15. Limiting strip; 16. Wheel frame; 17. Wheel body; 18. Connecting plate; 19. Wheel axle; 20. Array block; 21. Bevel cut surface; 22. Straight cut surface; 23. Engaging block; 24. Vertical block; 25. Thin block; 26. Thick block; 27. Backrest; 28. Backrest; 29. ​​Lumbar pad; 30. Neck pillow; 31. Desk; 32. Table legs; 33. Bottom cross frame; 34. Block; 35. Bending rod; 36. Grounding plate; 37. Pedal; 38. Connecting seat; 39. Connecting shaft; 40. Snap-in slot; 41. Snap-in plate; 42. Fixed column; 43. Return spring. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0034] like Figures 1 - 12 The student desk and chair with a spine protection lumbar support shown in the figure comprises a seat cushion 1 and a desk 31, the lower surface of the seat cushion 1 is fixedly connected with a cushion frame 2 on both sides, the front end of the cushion frame 2 is fixedly installed with a front leg 3, the rear end of the cushion frame 2 is fixedly connected with a connecting block 5, the lower end of the connecting block 5 is rotatably connected with a rear leg 4, the sides of the connecting blocks 5 on both sides are fixedly connected with a vertical stopper 24, a thin stopper 25 and a thick stopper 26 on the sides away from each other, a transmission rod 10 is connected to one side of the rear leg 4 through an elastic mechanism, the upper end of the transmission rod 10 is slidably inserted between the vertical stopper 24 and the thin stopper 25, the lower end of the rear leg 4 is rotatably installed with a wheel body 17, the lower end of the transmission rod 10 is fixedly connected with a connecting plate 18, and a meshing mechanism is provided between the connecting plate 18 and one side of the wheel body 17;

[0035] Two table legs 32 are fixedly connected to the lower surface of the desk 31 , a bottom cross frame 33 is fixedly installed at the lower end between the two table legs 32 , and two pedal mechanisms are arranged on the outer surface of the bottom cross frame 33 .

[0036] The upper end surface of the rear leg 4 is fixedly connected with a rotating block 6, and a connecting column 7 is fixedly inserted on one side surface of the rotating block 6. One end of the connecting column 7 rotates through the inner side of the connecting block 5 and is fixedly connected with a terminal block 8. The terminal block 8 and the rotating block 6 are respectively located on both sides of the connecting block 5. When the rear leg 4 rotates, the rotating block 6, the connecting column 7 and the terminal block 8 will rotate synchronously relative to the connecting block 5.

[0037] The elastic mechanism includes a sliding groove 9 opened on the lower surface of the terminal block 8. The upper end of the transmission rod 10 is slidably clamped inside the sliding groove 9. One side surface of the upper end of the transmission rod 10 is fixedly connected with a moving column 11. The moving column 11 slidably penetrates through the inner wall of the sliding groove 9, and the end of the moving column 11 passing through is fixedly connected with an L-shaped plate 13. A pulling rod 14 is fixedly connected to the lower surface of the L-shaped plate 13. A compression spring 12 is sleeved on the outer surface of the moving column 11, and the compression spring 12 is located inside the sliding groove 9. The design of the pulling rod 14 facilitates the user to pull structures such as the L-shaped plate 13 and the moving column 11.

[0038] Two limiting strips 15 are fixedly connected to one side surface of the rear leg 4. The transmission rod 10 is slidably clamped between the two limiting strips 15. The limiting strips 15 are used to improve the stability of the transmission rod 10, ensuring that the transmission rod 10 can move horizontally relative to the rear leg 4, but at the same time can rotate together with the rear leg 4.

[0039] A wheel frame 16 is fixedly connected to the lower end of the rear leg 4. A wheel shaft 19 is fixedly penetrated through the middle of the wheel body 17. The two ends of the wheel shaft 19 respectively rotate and penetrate through the two side surfaces of the wheel frame 16. When the wheel body 17 rolls on the ground, it rotates around the wheel shaft 19.

[0040] The meshing mechanism includes a connecting plate 18 fixedly connected to the lower end of the transmission rod 10. A plurality of meshing blocks 23 arranged in a circular array are fixedly connected to one side surface of the connecting plate 18. A plurality of array blocks 20 arranged in a circular array are fixedly connected to the end face of the wheel shaft 19. Two symmetric inclined cutting surfaces 21 are opened on the outer surface of the array block 20. Straight cutting surfaces 22 are respectively opened on the sides of the two inclined cutting surfaces 21 away from each other. Each meshing block 23 is slidably clamped between two adjacent straight cutting surfaces 22.

[0041] A backrest 27 is fixedly connected to the rear of the seat cushion 1. A lumbar pad 29 is fixedly installed at the lower end of the front surface of the backrest 27. The lumbar pad 29 helps to maintain or restore the natural curvature of the lumbar spine by supporting the lumbar spine area. A back plate 28 is fixedly connected to the upper end of the backrest 27. Two symmetric neck pillows 30 are fixedly connected to the upper end of the back plate 28. The neck pillow 30 is an L-shaped memory foam pad, which can support the user's neck and thus prevent the head from tilting during rest.

[0042] The pedal mechanism includes a sleeve block 34 slidably sleeved on the outer surface of the bottom cross frame 33, a bending rod 35 is slidably penetrated on the inner side of the sleeve block 34, a grounding plate 36 is fixedly connected to the lower end of the bending rod 35, a pedal board 37 is arranged at the upper end of the bending rod 35, and two connecting seats 38 are fixedly connected to the lower surface of the pedal board 37, and the connecting seats 38 are located on both sides of the bending rod 35, and the upper ends of the two side surfaces of the bending rod 35 are respectively fixedly connected to the rear connecting shaft 39, and the connecting shaft 39 rotates and penetrates the inner side of the connecting seat 38. The setting of the pedal mechanism can facilitate the placement of the user's feet. When the user's feet step on the surface of the pedal board 37, the connecting seat 38 rotates with the connecting shaft 39 as the axis, so that the pedaling angle can be flexibly changed, thereby improving the comfort of use.

[0043] The pedal 37 may be provided with an anti-skid pad to increase the friction with the ground and improve the stability of the desk 31 when stepped on.

[0044] The outer surface of the bending rod 35 is provided with a snap-in slot 40, and the inner top surface of the sleeve block 34 is fixedly connected with a snap-in plate 41, which slides into the inner side of the snap-in slot 40, and a fixed column 42 is fixedly connected to the inner side of the snap-in slot 40. The outer surface of the fixed column 42 is sleeved with two return springs 43, and the return springs 43 are respectively located on the front and rear surfaces of the snap-in plate 41. When the foot steps on the pedal 37, the bending rod 35 is slightly squeezed, so that the bending rod 35 moves slightly forward and downward, and the snap-in plate 41 moves forward to squeeze the return spring 43, and the grounding plate 36 is fully fitted with the ground to ensure close contact, thereby ensuring sufficient friction to prevent the entire desk 31 from moving forward.

[0045] When the user needs to take a break during use, he pulls the pulling rods 14 on both sides, so that the L-shaped plate 13 drives the movable column 11 to move horizontally, squeezes the compression spring 12, and at the same time makes the transmission rod 10 move horizontally, and the transmission rod 10 disengages from between the vertical block 24 and the thin block 25, and then cooperates with the gravity generated by the user sitting to make the hind legs 4 rotate backward. After passing one side of the thin block 25, the transmission rod 10 reaches the side of the thin block 25 and the thick block 26, and is blocked by the thick block 26. After letting go, under the elastic force of the compression spring 12, it is stuck between the thin block 25 and the thick block 26, thereby achieving the function of limiting the transmission rod 10, and then achieving the purpose of limiting the hind legs 4.

[0046] After the rear legs 4 are rotated, the user can lie down with the neck located between the two neck pillows 30 to prevent the head from tilting during rest. The two feet step on the surface of the pedal 37 so that the legs are relaxed and naturally bent to achieve a more comfortable lying position. When force is applied to the pedal 37, the bending rod 35 will move slightly relatively along the lower front, and the grounding plate 36 applies pressure to the ground, and cooperates with the shape of the bending rod 35 to convert the force applied when the user steps down into a downward direction, thereby ensuring that the desk 31 will not be pushed away and ensuring that the user maintains a stable semi-lying position.

[0047] While the user drags the drag rods 14 on both sides, after the transmission rod 10 moves horizontally, the end of the connecting plate 18 at the lower end away from the wheel axle 19, so that the engaging block 23 disengages between the array blocks 20, ensuring that the wheel body 17 is no longer limited, so as to ensure that structures such as the rear legs 4, the rotating block 6, and the connecting column 7 can rotate; after releasing the drag rod 14, under the guiding action of the inclined plane 21, the engaging block 23 will be caught between the two straight planes 22 again. It should be noted that: after the transmission rod 10 moves horizontally and resets, in a few cases, the engaging block 23 may not be just caught between the two array blocks 20, but this state can be eliminated after the wheel body 17 rolls slightly, so it does not bring a substantial impact on the implementation of this solution. Therefore, after the rear legs 4 rotate and the user lies down to rest, the wheel body 17 can remain stationary to ensure stability.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A student desk and chair with a spinal protection lumbar support, comprising a seat cushion (1) and a desk (31), characterized in that: The cushion (1) is fixedly connected to a cushion frame (2) on both sides of the lower surface, a front leg (3) is fixedly installed on the front end of the cushion frame (2), a connecting block (5) is fixedly connected to the rear end of the cushion frame (2), the lower end of the connecting block (5) is rotatably connected to the rear leg (4), and the sides of the connecting blocks (5) on both sides that are away from each other are fixedly connected to a vertical stopper (24), a thin stopper (25) and a thick stopper (26), a side surface of the rear leg (4) is connected to a transmission rod (10) through an elastic mechanism, the upper end of the transmission rod (10) is slidably inserted between the vertical stopper (24) and the thin stopper (25), the lower end of the rear leg (4) is rotatably installed with a wheel body (17), the lower end of the transmission rod (10) is fixedly connected to a connecting plate (18), and a meshing mechanism is provided between the connecting plate (18) and one side of the wheel body (17); Two table legs (32) are fixedly connected to the lower surface of the desk (31), a bottom cross frame (33) is fixedly installed at the lower end between the two table legs (32), and two pedal mechanisms are arranged on the outer surface of the bottom cross frame (33).

2. The student desks and chairs with a spinal protection lumbar support according to claim 1, characterized in that: The upper end surface of the rear leg (4) is fixedly connected to a rotating block (6), a connecting column (7) is fixedly inserted into a side surface of the rotating block (6), one end of the connecting column (7) rotates through the inner side of the connecting block (5) and is fixedly connected to a terminal block (8), and the terminal block (8) and the rotating block (6) are respectively located on both sides of the connecting block (5).

3. The student desks and chairs with a spinal protection lumbar support according to claim 2, characterized in that: The elastic mechanism comprises a slide groove (9) provided on the lower surface of the terminal block (8); the upper end of the transmission rod (10) slides into the inner side of the slide groove (9); the upper end of one side surface of the transmission rod (10) is fixedly connected to a moving column (11); the moving column (11) slides through the inner wall of the slide groove (9); and one end of the moving column (11) is fixedly connected to an L-shaped plate (13); the lower surface of the L-shaped plate (13) is fixedly connected to a pulling rod (14); the outer surface of the moving column (11) is sleeved with a compression spring (12); the compression spring (12) is located on the inner side of the slide groove (9).

4. The student desks and chairs with a spinal protection lumbar support according to claim 1, characterized in that: Two limit strips (15) are fixedly connected to one side surface of the rear leg (4), and the transmission rod (10) is slidably inserted between the two limit strips (15).

5. The student desks and chairs with a spinal protection lumbar support according to claim 1, characterized in that: The lower end of the rear leg (4) is fixedly connected to a wheel frame (16), a wheel axle (19) is fixedly passed through the middle of the wheel body (17), and two ends of the wheel axle (19) respectively rotate and pass through the two side surfaces of the wheel frame (16).

6. The student desks and chairs with a spinal protection lumbar support according to claim 5, characterized in that: The meshing mechanism comprises a connecting plate (18) fixedly connected to the lower end of the transmission rod (10), a plurality of meshing blocks (23) arranged in a circular array being fixedly connected to one side surface of the connecting plate (18), a plurality of array blocks (20) arranged in a circular array being fixedly connected to the end surface of the wheel shaft (19), two symmetrical chamfered surfaces (21) being provided on the outer surface of the array block (20), straight surfaces (22) being provided on the sides away from the two chamfered surfaces (21), and each meshing block (23) being slidably inserted between two adjacent straight surfaces (22).

7. The student desks and chairs with a spinal protection lumbar support according to claim 1, characterized in that: The rear side of the seat cushion (1) is fixedly connected with a backrest (27). A lumbar cushion (29) is fixedly installed at the lower end of the front surface of the backrest (27). The upper end of the backrest (27) is fixedly connected with a back plate (28). Two symmetric neck pillows (30) are fixedly connected to the upper end of the back plate (28).

8. The student desks and chairs with a spinal protection lumbar support according to claim 1, characterized in that: The stepping mechanism includes a sleeve block (34) slidably sleeved on the outer surface of the bottom cross-frame (33). A bent rod (35) is slidably penetrated through the inner side of the sleeve block (34). A grounding plate (36) is fixedly connected to the lower end of the bent rod (35). A stepping pedal (37) is arranged at the upper end of the bent rod (35). Two connecting seats (38) are fixedly connected to the lower surface of the stepping pedal (37). The connecting seats (38) are located on both sides of the bent rod (35). Rear connecting shafts (39) are respectively fixedly connected to the upper ends of both side surfaces of the bent rod (35). The connecting shafts (39) rotatably penetrate through the inner sides of the connecting seats (38).

9. The student desks and chairs with a spinal protection lumbar support according to claim 8, characterized in that: A clamping groove (40) is formed on the outer surface of the bent rod (35). A clamping plate (41) is fixedly connected to the inner top surface of the sleeve block (34). The clamping plate (41) is slidably clamped into the inner side of the clamping groove (40). A fixing column (42) is fixedly connected to the inner side of the clamping groove (40). Two reset springs (43) are sleeved on the outer surface of the fixing column (42). The reset springs (43) are respectively located on the front and rear surfaces of the clamping plate (41).

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