Sitting chair provided with air bag

Abstract

The utility model provides a sitting posture chair provided with an air bag, and aims to solve the problems that in the prior art, a sitting posture chair is in rigid contact with the waist and the back of a human body, the waist cannot be better supported, and the comfort is poor. A sitting posture chair provided with an air bag comprises a backrest part, an air bag part, an air bag part, an air bag part and an air bag part, and an elastic waist protection pad is arranged on the front side of the backrest part; the cushion part is connected with the backrest part; the air bag is arranged between the backrest part and the elastic waist protection pad, and the air bag drives the elastic waist protection pad to bow up towards the front side in an inflated state; and the air inflation device is communicated with the air bag. The air bag is arranged on the backrest part and the elastic waist protection pad is arranged on the front side of the air bag, so that when the air bag is inflated, the air bag expands to drive the elastic waist protection pad to protrude towards the front side in an arch shape, the elastic waist protection pad can abut against the waist of a human body and better support the waist, and the comfort of a user is improved; and the sitting posture of the user can be better corrected.

Description

Technical Field

[0001] This utility model belongs to the field of seating chair technology, specifically relating to a seating chair equipped with an airbag. Background Technology

[0002] Currently, primary and secondary school students who are still growing and developing, as well as office workers who sit for long periods of time, are easily affected by poor posture. Poor posture can affect bones and joints, and in severe cases, can cause spinal deformities. To improve this situation, posture-correcting chairs have appeared on the market. However, the backrests of existing posture-correcting chairs make rigid contact with the lower back, which cannot provide adequate support for the lumbar region, resulting in poor comfort and a less than ideal user experience. Utility Model Content

[0003] This invention provides a seating chair equipped with an airbag, which aims to solve the problem that existing seating chairs make rigid contact with the human lower back, failing to provide adequate support for the lower back and resulting in poor comfort.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A seating chair equipped with an airbag includes:

[0006] The backrest has an elastic lumbar support pad on the front side.

[0007] The seat cushion is connected to the backrest.

[0008] An airbag, disposed between the backrest and the elastic lumbar support cushion, inflates to cause the elastic lumbar support cushion to arch forward; and...

[0009] An inflation device, which is connected to the airbag.

[0010] A further embodiment: the lower end of the elastic lumbar support pad is fixedly connected to the backrest, the upper end of the elastic lumbar support pad is provided with a sliding part, the backrest is provided with a guide part extending in the vertical direction, and the sliding part is slidably connected to the guide part.

[0011] Based on the above technical solution: the above settings enable the elastic lumbar support pad to smoothly arch forward when the airbag is inflated; when the airbag is deflated, the elastic lumbar support pad can recover under its own elasticity, so that it can better support the user's waist when in use.

[0012] A further embodiment: the sliding part includes two sliders, left and right, and the guide part includes two guide holes, left and right, with the two sliders respectively slidably disposed in the two guide holes.

[0013] Based on the above technical solution, the above settings make the elastic lumbar support pad more stable when it arches forward or rebounds backward.

[0014] A further embodiment: The backrest is provided with a rear protrusion on the backrest and behind the elastic lumbar support pad, and clearance holes are provided on both the left and right sides of the rear protrusion.

[0015] The inflation device includes an air tube and a ball pump, the air tube passing through one of the relief holes and communicating with the airbag.

[0016] Based on the above technical solution: the above settings make it convenient to place the airbag and make the user more comfortable, and make the opening convenient for the connection between the air tube and the airbag.

[0017] A further embodiment: The airbag is equipped with an inflation valve and a pressure relief valve, and the inflation device is connected to the inflation valve.

[0018] Based on the above technical solution: the above settings enable users to inflate and deflate the airbag.

[0019] A further option: the elastic lumbar support pad is made of rubber or silicone.

[0020] A further embodiment: The backrest is provided with a backrest hinge on the lower side, and the seat cushion is provided with two seat cushion hinges, left and right, on the rear side, with the backrest hinge located between the two seat cushion hinges.

[0021] An angle adjustment component for adjusting and locking the angle between the backrest and the seat cushion is provided between at least one of the seat cushion hinge portions and the backrest hinge portion.

[0022] Based on the above technical solution: by setting an angle adjustment component, the angle of the backrest relative to the seat cushion can be adjusted and fixed, so that users can adjust it according to their needs and bring them a better experience.

[0023] A further embodiment: The angle adjustment assembly includes a pivot shaft passing through the backrest hinge and the seat hinge, a nut seat threadedly connected to the pivot shaft, and a circumferential locking assembly disposed between the nut seat and the seat hinge.

[0024] One end of the rotating shaft is provided with a knob that is rotatably connected to the seat cushion hinge, and the other end of the rotating shaft is provided with a threaded post that is threadedly connected to the nut seat; the nut seat is slidably disposed on the backrest hinge in the left-right direction and is circumferentially fixed to the backrest hinge;

[0025] The circumferential locking component includes a locked state and an unlocked state; when the knob is rotated in the forward direction, the nut seat slides away from the seat cushion hinge, the circumferential locking component switches to the unlocked state, and the backrest can rotate relative to the seat cushion; when the knob is rotated in the reverse direction, the nut seat slides toward the seat cushion hinge, the circumferential locking component switches to the locked state, and the backrest is circumferentially locked to the seat cushion.

[0026] Based on the above technical solution: the above settings allow the user to adjust the angle between the backrest and the seat cushion by first rotating the knob in the forward direction, thereby switching the circumferential locking component to the unlocked state. At this time, the circumferential locking component releases the circumferential angle locking effect between the backrest and the seat cushion, allowing the user to rotate the backrest relative to the seat cushion to adjust the angle between them. After adjustment, the user can switch the circumferential locking component to the locked state by rotating the knob in the reverse direction, thereby locking the backrest and the seat cushion circumferentially, preventing them from rotating relative to each other, thus locking the angle between them.

[0027] A further option: the circumferential locking component is a spline or a meshing tooth component.

[0028] A further embodiment: The left and right end faces of the backrest hinge are each surrounded by a number of spherical protrusions, and the end face of each cushion hinge near the backrest hinge is surrounded by a number of spherical grooves.

[0029] When the circumferential locking component switches to the locked state, several of the spherical protrusions are located in several spherical grooves on their corresponding sides.

[0030] Based on the above technical solution: When the user rotates the knob forward to switch the circumferential locking component to the unlocked state, the user can adjust the angle between the backrest and the seat cushion by rotating them relative to each other. When the knob is rotated until several spherical protrusions disengage from their corresponding spherical grooves, the backrest hinge will cause the two seat cushion hinges to slightly deform and open to the left and right sides respectively. At this time, since the adjustment is not complete, rotating the knob cannot restore the circumferential locking component to the locked state. However, when the user rotates the knob until several spherical protrusions are respectively located in several spherical grooves on their corresponding sides, both seat cushion hinges return to the backrest hinge. At this time, the adjustment is complete, and rotating the knob can smoothly switch the circumferential locking component, such as a spline or interlocking teeth, to the locked state, thereby locking the angle between the backrest and the seat cushion.

[0031] The beneficial effects of this utility model are as follows:

[0032] This invention features an airbag on the backrest and an elastic lumbar support pad on the front of the airbag. When the airbag is inflated, it expands, causing the elastic lumbar support pad to arch forward and rest against the lower back, providing better support and stretching. This enhances user comfort, corrects posture, and provides a better user experience. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a first-view structural diagram of a seating chair equipped with an airbag according to the present invention.

[0035] Figure 2 This is a second-view structural diagram of a seating chair equipped with an airbag according to the present invention.

[0036] Figure 3 This is a cross-sectional structural diagram of the seat cushion hinge and the backrest hinge.

[0037] Figure 4 This is an exploded structural diagram of a seating chair equipped with an airbag, according to this utility model.

[0038] Figure 5 yes Figure 4 A magnified structural diagram at point A.

[0039] Figure 6 yes Figure 4 A magnified structural diagram at point B.

[0040] Explanation of the labels in the diagram:

[0041] 1-Backrest; 11-Backrest hinge; 111-Limiting groove; 112-Spherical protrusion; 12-Guide hole; 13-Nut seat; 131-Limiting block; 132-Protrusion; 14-Leaving hole; 2-Seat cushion; 21-Seat cushion hinge; 211-Groove; 212-Spherical groove; 22-Rotating shaft; 221-Knob; 222-Threaded column; 3-Elastic lumbar support pad; 31-Slider; 4-Airbag; 5-Inflation device; 51-Air tube; 52-Ball pump. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0043] like Figures 1 to 6 As shown, this embodiment provides a seating chair equipped with an airbag, including:

[0044] Backrest 1, with an elastic lumbar support pad 3 provided on the front side of the backrest 1;

[0045] The seat cushion 2 is connected to the backrest 1;

[0046] An airbag 4 is disposed between the backrest 1 and the elastic lumbar support pad 3. When inflated, the airbag 4 causes the elastic lumbar support pad 3 to arch forward.

[0047] An inflation device 5 is connected to the airbag 4.

[0048] In some specific implementations, such as Figure 2 and Figure 4 As shown, the lower end of the elastic lumbar support pad 3 is fixedly connected to the backrest 1, specifically by means of screws or other methods. The upper end of the elastic lumbar support pad 3 is provided with a sliding part, and the backrest 1 is provided with a guide part extending in the vertical direction. The sliding part is slidably connected to the guide part. When the airbag 4 is inflated, the expansion of the airbag 4 drives the sliding part to slide downward along the guide part, thereby causing the elastic lumbar support pad 3 to bulge forward in an arc shape. When the airbag 4 is deflated, the elastic lumbar support pad 3, under its own elasticity, causes the sliding part to slide upward along the guide part, thereby restoring the elastic lumbar support pad 3 to its original shape.

[0049] One specific structure is that the sliding part includes two sliders 31 on the left and right, and the guiding part includes two guide holes 12 on the left and right. The two sliders 31 are slidably disposed in the two guide holes 12 respectively. For ease of installation, the lower end of the guide hole 12 is designed to fit the shape of the slider 31, thereby facilitating the slider 31 to pass through back and forth.

[0050] In some specific embodiments, the backrest 1 is provided with a rear protrusion on the backrest 1 and located behind the elastic lumbar support pad 3, and the left and right sides of the rear protrusion are provided with clearance holes 14.

[0051] The inflation device 5 includes an air tube 51 and a ball pump 52. The air tube 51 passes through one of the relief holes 14 and communicates with the airbag 4. When inflating, the airbag 4 can be inflated by continuously pressing the ball pump 52.

[0052] The airbag 4 is equipped with an inflation valve and a pressure relief valve. The inflation device 5 is connected to the inflation valve, specifically, the air pipe 51 is connected to the inflation valve. The pressure relief valve is used to deflate the airbag 4.

[0053] The elastic lumbar support pad 3 is preferably made of rubber or silicone. Specifically, the material must meet the following requirements: when the airbag 4 is inflated, the elastic lumbar support pad 3 arches forward; when the airbag 4 is deflated, the elastic lumbar support pad 3 can unfold backward and return to its original position under its own elasticity.

[0054] In some specific implementations, such as Figures 1 to 6 As shown, the backrest 1 has a backrest hinge 11 on its lower side, and the seat cushion 2 has two seat cushion hinges 21 on its rear side, one on the left and one on the right. The backrest hinge 11 is located between the two seat cushion hinges 21.

[0055] At least one of the seat cushion hinge portions 21 and the backrest hinge portion 11 is provided with an angle adjustment component for adjusting and locking the angle between the backrest 1 and the seat cushion portion 2. Preferably, each seat cushion hinge portion 21 and backrest hinge portion 11 is provided with one set of angle adjustment components, and the two sets of angle adjustment components are symmetrically arranged to achieve left-right balance.

[0056] Specifically, the backrest hinge 11 and the seat cushion hinge 21 are rotatably connected. The angle between the seat cushion 2 and the backrest 1 is adjusted and fixed by the angle adjustment component. The preferred angle adjustment range is 0-180 degrees. For example, when the angle between the two is 0 degrees, they are folded together for easy storage. For example, when the angle between the two is 180 degrees, the user can lie on it and inflate the airbag 4 to make the elastic lumbar support cushion 3 arch upward to support the waist and stretch the waist.

[0057] In some specific implementations, such as Figures 1 to 6 As shown, the angle adjustment assembly includes a pivot 22 passing through the backrest hinge 11 and the seat hinge 21, a nut seat 13 threadedly connected to the pivot 22, and a circumferential locking assembly disposed between the nut seat 13 and the seat hinge 21.

[0058] Specifically, both the backrest hinge 11 and the seat hinge 21 have through holes coaxial with the pivot 22. One end of the pivot 22 has a knob 221 rotatably connected to the seat hinge 21. The knob 221 protrudes from the seat hinge 21 for easy user operation. The other end of the pivot 22 has a threaded post 222 threadedly connected to the nut seat 13. The nut seat 13 is slidably mounted on the backrest hinge 11 in the left-right direction and is circumferentially fixed to the backrest hinge 11. Specifically, the backrest hinge 11 has a limiting groove 111 extending in the left-right direction, and the nut seat 13 has a limiting block 131 located in the limiting groove 111, thereby fixing the nut seat 13 circumferentially to the backrest hinge 11, that is, the two rotate synchronously relative to the seat cushion 2.

[0059] The circumferential locking component includes a locked state and an unlocked state;

[0060] When the knob 221 is turned in the forward direction, the nut seat 13 slides away from the seat hinge 21, and the circumferential locking component switches to the unlocked state. At this time, the backrest 1 can rotate relative to the seat cushion 2, and the user can adjust it to the desired angle. When the knob 221 is turned in the reverse direction, the nut seat 13 slides toward the seat hinge 21, and the circumferential locking component switches to the locked state. The backrest 1 and the seat cushion 2 are circumferentially locked, thereby fixing the angle between them.

[0061] The circumferential locking component can be a spline; specifically, it includes a plurality of protrusions 132 surrounding the nut seat 13 and a plurality of grooves 211 surrounding the seat hinge portion 21. The plurality of protrusions 132 are inserted into the plurality of grooves 211 to fix the nut seat 13 and the seat hinge portion 21 circumferentially.

[0062] The circumferential locking component can also be a biting tooth component, specifically including a plurality of first biting teeth arranged around the nut seat 13 and a plurality of second biting teeth arranged around the seat hinge portion 21.

[0063] In order to enable users to rotate and adjust to the correct position when adjusting the angle between the backrest 1 and the seat cushion 2, the left and right end faces of the backrest hinge 11 are respectively surrounded by a number of spherical protrusions 112, and each end face of the seat cushion hinge 21 near the backrest hinge 11 is surrounded by a number of spherical grooves 212.

[0064] When the circumferential locking assembly switches to the locked state, the plurality of spherical protrusions 112 are respectively located in the plurality of spherical grooves 212 on their corresponding sides. In a preferred embodiment, the plurality of spherical protrusions 112 correspond one-to-one with the plurality of protrusions 132 in the spline or the plurality of first engagement teeth in the engagement tooth assembly.

[0065] Specifically, when the user rotates knob 221 forward to switch the circumferential locking component to the unlocked state, the user can adjust the angle between the backrest 1 and the seat cushion 2 by rotating them relative to each other. When the rotation is complete, and all the spherical protrusions 112 disengage from their corresponding spherical grooves 212, the backrest hinge 11 will cause the two seat cushion hinges 21 to slightly deform and open to the left and right sides respectively. At this time, since the adjustment is not in place, the circumferential locking component cannot be restored to the locked state by rotating knob 221. However, when the user rotates the knob to the point where the spherical protrusions 112 are respectively located in the corresponding spherical grooves 212 on their respective sides, both seat cushion hinges 21 return to the backrest hinge 11. At this time, the adjustment is in place, and the circumferential locking component, such as a spline or interlocking teeth, can be smoothly switched to the locked state by rotating knob 221, thereby locking the angle between the backrest 1 and the seat cushion 2.

[0066] Working principle explanation:

[0067] When the airbag 4 is inflated, the airbag 4 expands, causing the elastic lumbar support pad 3 to bulge forward in an arch shape. The elastic lumbar support pad 3 rests against the waist of the human body, providing better support for the waist, which not only improves the user's comfort, but also better corrects the user's sitting posture.

[0068] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A sitting chair configured with an air bag, characterized by, The utility model provides a backrest part, the front side of backrest part is equipped with elastic waist support pad, the utility model discloses a seat cushion part is connected with backrest part, air bag is arranged between backrest part and elastic waist support pad, air bag drives elastic waist support pad to arch to the front side under the inflation state, and inflation device is communicated with air bag. The lower end of the elastic waist support pad is fixedly connected with the backrest part, the upper end of the elastic waist support pad is provided with a sliding part, the backrest part is provided with a guide part extending in the up-down direction, and the sliding part is slidingly connected with the guide part. The sliding part includes two left and right sliding blocks, and the guide part includes two left and right guide holes. The backrest part is provided with a rear convex part protruding rearward on the rear side of the elastic waist support pad, and the left and right sides of the rear convex part are provided with accommodation holes. The inflation device includes an air pipe and a ball pump, and the air pipe communicates with the air bag through one of the accommodation holes.

2. The chair according to claim 1, wherein The air bag is provided with an inflation valve and a pressure relief valve, and the inflation device communicates with the inflation valve.

3. The chair according to claim 2, wherein The material of the elastic waist support pad is rubber or silicone.

4. The chair according to claim 1, wherein The lower side of the backrest part is provided with a backrest hinge part, the rear side of the seat cushion part is provided with left and right seat cushion hinge parts, and the backrest hinge part is located between the two seat cushion hinge parts. At least one angle adjusting assembly is arranged between the seat cushion hinge part and the backrest hinge part to adjust and lock the included angle between the backrest part and the seat cushion part.

5. The chair of claim 1, wherein, The angle adjusting assembly includes a rotating shaft penetrating the backrest hinge part and the seat cushion hinge part, a nut seat threadedly connected with the rotating shaft, and a circumferential locking assembly arranged between the nut seat and the seat cushion hinge part.

6. The chair of claim 1, wherein, One end of the rotating shaft is provided with a knob rotationally connected with the seat cushion hinge part, the other end of the rotating shaft is provided with a threaded column threadedly connected with the nut seat, and the nut seat is slidingly arranged on the backrest hinge part in the left-right direction and circumferentially fixed with the backrest hinge part.

7. The chair of claim 1, wherein, The circumferential locking assembly includes a locking state and an unlocking state. When the knob is rotated forward, the nut seat slides away from the seat cushion hinge part, the circumferential locking assembly switches to the unlocking state, and the backrest part can rotate relative to the seat cushion part.

8. The chair according to claim 7, wherein When the knob is rotated reversely, the nut seat slides toward the seat cushion hinge part, the circumferential locking assembly switches to the locking state, and the backrest part is circumferentially locked with the seat cushion part. The circumferential locking assembly is a spline or interlocking tooth assembly. The left and right end faces of the backrest hinge part are respectively surrounded by a plurality of spherical crown protrusions, and the end face of each seat cushion hinge part close to the backrest hinge part is surrounded by a plurality of spherical grooves.

9. The chair according to claim 8, wherein When the circumferential locking assembly switches to the locking state, the plurality of spherical crown protrusions are respectively located in the plurality of spherical grooves on the corresponding side.

10. The chair according to claim 8 or 9, wherein ​ ​

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