Table chair capable of relieving pressure of spine and legs of human body

Abstract

The utility model relates to a tablet chair capable of relieving the pressure of the spine and legs of a human body, which belongs to the technical field of teaching aids and comprises a chair surface, a chair back, two supports and a buffer cross beam, the periphery of the chair surface is downwards provided with an arc-shaped flange, the periphery of the chair back is backwards provided with an arc-shaped flange, and the buffer cross beam comprises an upper convex cross beam and a lower concave cross beam. The two sides of the bottom of the chair face are provided with inserting sleeves through bolts, the two sides of the downwards-concave cross beam are inserted into the inserting sleeves and are in interference fit with the inserting sleeves, buffering soft rubber is installed at the position, making contact with the upwards-convex cross beam, of the bottom of the chair face, the rear side of the chair back is provided with an assembling groove through bolts, a soft rubber rod is transversely and fixedly installed in the assembling groove, and the support abuts against the soft rubber rod. The chair surface is adjusted to incline forwards or backwards through the buffer cross beam and the buffer soft rubber, the angle of the chair surface can be adjusted and the buffer force can be fed back through the soft rubber stick along with the stress of the chair back, the comfortable sitting posture can be adjusted, the discomfort caused by uneven stress of the back, the hip and the legs of a student due to long-time use is avoided, and the blood circulation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a chair which can relieve the pressure on the spine and legs of a human body. Background Art

[0002] Students need to sit on chairs all day long during class time, and most existing chairs use a simple flat structure made of a variety of materials including templates and plastics. Due to the hard material, the chair surface and backrest themselves will not deform under stress, resulting in insufficient fit between the back, buttocks and legs of the user during use. Long-term use will cause uneven stress on the back, buttocks and legs, causing discomfort. In severe cases, it will cause compression of blood vessels, affecting blood circulation and other problems. Utility Model Content

[0003] The utility model aims at solving the above problems in the prior art and provides a chair that can relieve the pressure on the spine and legs of the human body, which is achieved through the following technical solutions:

[0004] A classroom chair that can relieve pressure on the human spine and legs, comprises a seat, a chair back, two brackets and a buffer beam, the seat seat having a periphery that is curved downwardly, the seat back having a periphery that is curved backwardly, the brackets on both sides are symmetrically arranged, the buffer beam comprising an upper convex beam and a lower concave beam, the lower concave beam and the upper convex beam are fixed in sequence between the brackets on both sides, plug-in sleeves are installed on both sides of the bottom of the seat seat by bolts, the two sides of the lower concave beam are inserted into the plug-in sleeves and have an interference fit with the plug-in sleeves, buffer soft rubber is installed at the bottom of the seat seat and at the contact position with the upper convex beam, an assembly groove is installed on the back side of the seat back by bolts, the top of the bracket is clamped in the assembly groove and has an interference fit with the assembly groove, a soft rubber rod is fixedly installed horizontally in the assembly groove, and the bracket abuts against the soft rubber rod.

[0005] The utility model is further configured as follows: the bracket includes an upper bracket, an adjusting bracket and a lower bracket from top to bottom, the upper bracket and the lower bracket are both L-shaped brackets welded with round steel, the top of the adjusting bracket is welded and fixed to the horizontal part of the upper bracket, the bottom of the adjusting bracket is inserted into the lower bracket, the adjusting bracket and the lower bracket are both provided with through holes in the vertical direction, locking bolts are installed in the through holes, the top of the upper bracket is inserted into the assembly groove, and the buffer beam is fixedly installed at the welding point of the upper bracket and the adjusting bracket.

[0006] The utility model is further configured as follows: a plurality of ventilation holes are provided on the surface of the seat surface and the seat back, the maximum width of the ventilation holes is 5-6 mm, and reinforcing ribs are extended between adjacent ventilation holes on the back of the seat surface and the seat back.

[0007] The utility model is further configured as follows: a guide sleeve is sleeved at the joint between the adjusting bracket and the lower bracket, the guide sleeve is a plastic sleeve, a threaded hole is opened on the guide sleeve, the threaded hole on the guide sleeve is aligned with the through holes on the adjusting bracket and the lower bracket and a locking bolt is installed.

[0008] The utility model is further configured as follows: protective covers are installed on both sides of the bottom of the horizontal part of the lower bracket.

[0009] In summary, the beneficial technical effects of the utility model are:

[0010] The cushioning beam and cushioning rubber can be used to adjust the chair surface to tilt forward or backward. The soft rubber stick can be used to adjust the angle and feedback cushioning force as the chair back is subjected to force, so as to adjust the comfortable sitting posture and avoid discomfort caused by uneven force on the back, buttocks and legs due to long-term use by students, thereby ensuring blood circulation. The ventilation holes can be used to avoid moisture caused by long-term use in summer and ensure breathability. The ventilation holes are set to 5-6 mm to avoid user's finger insertion and cause injury while ensuring breathability. The height of the chair surface can be adjusted by adjusting the bracket to improve applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is used to show the overall structure of the utility model Figure 1 .

[0012] Figure 2 It is used to show the overall structure of the utility model Figure 2 .

[0013] Figure 3 It is a schematic diagram for showing the right-side structural view of the utility model.

[0014] Figure numerals: 1. seat surface; 2. seat back; 3. bracket; 301. upper bracket; 302. lower bracket; 303. adjustment bracket; 4. buffer beam; 401. upper convex beam; 402. lower concave beam; 403. buffer soft rubber; 5. plug-in sleeve; 6. assembly groove; 7. air vent; 8. reinforcing rib; 9. guide sleeve; 10. protective sleeve. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Example

[0017] like Figure 1-3As shown, a class chair disclosed by the utility model can relieve the pressure of the human spine and legs, including a seat surface 1, a seat back 2, two brackets 3 and a buffer beam 4. The periphery of the seat surface 1 is curved downward, and the periphery of the seat back 2 is curved backward. The brackets 3 on both sides are symmetrically arranged. The buffer beam 4 includes an upper convex beam 401 and a lower concave beam 402. The lower concave beam 402 and the upper convex beam 401 are fixed between the brackets 3 on both sides in sequence. The two sides of the bottom of the seat surface 1 are installed with plug-in sleeves 5 by bolts. The two sides of the cross beam 402 are inserted into the plug-in sleeve 5 and have an interference fit with the plug-in sleeve 5 to ensure that the seat surface 1 can adjust its angle. Buffer soft rubber 403 is installed at the bottom of the seat surface 1 and the contact position with the upper convex cross beam 401. The rear side of the chair back 2 is installed with an assembly groove 6 by bolts. The top of the bracket 3 is clamped in the assembly groove 6 and has an interference fit with the assembly groove 6 to ensure that the chair back 2 can adjust its angle. A soft rubber rod is fixedly installed horizontally in the assembly groove 6, and the bracket 3 abuts against the soft rubber rod to ensure that the chair back 2 can be adjusted along with the center of gravity of the human back.

[0018] The bracket 3 includes an upper bracket 301, an adjusting bracket 303 and a lower bracket 302 from top to bottom. The upper bracket 301 and the lower bracket 302 are both L-shaped brackets welded with round steel. The top of the adjusting bracket 303 is welded and fixed to the horizontal part of the upper bracket 301, and the bottom of the adjusting bracket 303 is inserted into the lower bracket 302. The adjusting bracket 303 and the lower bracket 302 are both provided with through holes in the vertical direction, and locking bolts are installed in the through holes. The top of the upper bracket 301 is inserted into the assembly groove 6, and the buffer beam 4 is fixedly installed at the welding point between the upper bracket 301 and the adjusting bracket 303.

[0019] The surfaces of the seat surface 1 and the seat back 2 are both provided with a plurality of ventilation holes 7 , wherein the maximum width of the ventilation holes 7 is 5-6 mm. Reinforcing ribs 8 are extended between adjacent ventilation holes 7 on the back of the seat surface 1 and the seat back 2 .

[0020] A guide sleeve 9 is sleeved at the joint between the adjusting bracket 303 and the lower bracket 302. The guide sleeve 9 is a plastic sleeve with a threaded hole. The threaded hole on the guide sleeve 9 is aligned with the through holes on the adjusting bracket 303 and the lower bracket 302 and is installed with a locking bolt.

[0021] Protective covers 10 are installed on both sides of the bottom of the horizontal part of the lower bracket 302 to prevent scratching the floor and increase the stability of the overall landing.

[0022] Specific implementation method of this example: adjust the depth of the adjustment bracket 303 inserted into the lower bracket 302 to determine the height of the seat 1, and tighten the locking bolt after adjustment. The user sits on the seat 1 with his back against the chair back 2. As the user's center of gravity changes, the angles of the seat 1 and the chair back 2 change, thereby improving the comfort of the chair. When used in summer, since the air vents 7 are provided on the seat 1 and the chair back 2, it can effectively solve the problem of moisture in the chair and clothes caused by the user's sweat secretion.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A classroom chair capable of relieving pressure on the human spine and legs, comprising a chair seat (1), a chair back (2), two brackets (3) and a buffer beam (4), characterized in that: The periphery of the seat surface (1) is curved downwardly and the periphery of the seat back (2) is curved backwardly and the brackets (3) on both sides are symmetrically arranged. The buffer beam (4) includes an upper convex beam (401) and a lower concave beam (402). The lower concave beam (402) and the upper convex beam (401) are fixed in sequence between the brackets (3) on both sides. The bottom of the seat surface (1) is provided with a plug-in sleeve (5) by bolts. The lower concave beam (402) is provided with a plug-in sleeve (5) on both sides. The side of the bracket (3) is inserted into the plug sleeve (5) and has an interference fit with the plug sleeve (5); the bottom of the seat surface (1) and the contact position with the upper convex cross beam (401) are installed with a buffer soft rubber (403); the rear side of the seat back (2) is installed with an assembly groove (6) by bolts; the top of the bracket (3) is clamped in the assembly groove (6) and has an interference fit with the assembly groove (6); a soft rubber rod is fixedly installed in the assembly groove (6) horizontally, and the bracket (3) is in contact with the soft rubber rod.

2. A chair capable of relieving pressure on the spine and legs of a human body according to claim 1, characterized in that: The bracket (3) comprises, from top to bottom, an upper bracket (301), an adjustment bracket (303) and a lower bracket (302); the upper bracket (301) and the lower bracket (302) are both L-shaped brackets welded with round steel; the top of the adjustment bracket (303) is welded and fixed to the horizontal part of the upper bracket (301); the bottom of the adjustment bracket (303) is inserted into the lower bracket (302); the adjustment bracket (303) and the lower bracket (302) are both provided with through holes in the vertical direction; locking bolts are installed in the through holes; the top of the upper bracket (301) is inserted into the assembly groove (6); and the buffer beam (4) is fixedly installed at the welding point between the upper bracket (301) and the adjustment bracket (303).

3. The chair capable of relieving pressure on the spine and legs of a human body according to claim 1, characterized in that: The surfaces of the seat surface (1) and the seat back (2) are both provided with a plurality of ventilation holes (7), the maximum width of the ventilation holes (7) being 5-6 mm, and reinforcing ribs (8) extending between adjacent ventilation holes (7) on the back of the seat surface (1) and the seat back (2).

4. The chair capable of relieving pressure on the spine and legs of a human body according to claim 2, characterized in that: A guide sleeve (9) is sleeved at the joint between the adjusting bracket (303) and the lower bracket (302); the guide sleeve (9) is a plastic sleeve, and a threaded hole is opened on the guide sleeve (9). The threaded hole on the guide sleeve (9) is aligned with the through holes on the adjusting bracket (303) and the lower bracket (302) and is installed with a locking bolt.

5. The chair capable of relieving pressure on the human spine and legs according to claim 4, characterized in that: Protective covers (10) are installed on both sides of the bottom of the horizontal part of the lower bracket (302).

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