Chair seat

Abstract

The utility model provides a chair seat which comprises a seat frame and an air bag assembly arranged in the seat frame, and mesh cloth tightened at the initial height position is arranged at the open position of the upper end of the seat frame. The air bag assembly comprises a plurality of air bags which are stacked up and down, and the air bags can be inflated to expand and can also be deflated to contract; the multiple air bags stacked up and down are divided into a lifting air bag located at the topmost end and used for acting on the screen cloth and one or more jacking air bags located at the lower end of the lifting air bag. When a seated person has a rest, the net cloth can elastically support the seated person, and when the seated person works, the lifting air bag and the jacking air bag expand and form double lifting force on the net cloth, so that the pelvic angle is changed, the pressure of the spine is greatly reduced, meanwhile, the sitting posture is corrected, the seated person is kept in an upright posture, and the risk of spine dislocation or lumbar muscle strain of the seated person is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat, especially a chair seat. BACKGROUND

[0002] The net seat of the existing office chair or ergonomic chair usually is provided with elastic net cloth on the seat frame, and the cotton seat is usually provided with soft cushion on the seat plate, and the chair seat has good elasticity and can form comfortable elastic support for the buttocks of the sitter.

[0003] In the actual use of the seat, the sitter can normally work on the chair seat or appropriately relax; when the sitter relaxes, the upper body is inclined backward and leans on the backrest to relax; at this time, the elastic net cloth is concave under the pressure after being subjected to the sitting force of the buttocks to provide comfortable elastic sitting feeling for the sitter; when the sitter works, the upper body needs to be kept upright; however, in the existing office chair or ergonomic chair, the inwardly concave net cloth makes the upper body of the sitter always keep the forward hunched state and is difficult to be normally upright, which, over a long period of time, can cause the lower half of the spine to be subjected to excessive pressure, cause spinal misalignment or lumbar muscle strain, and cause adverse effects on the health of the sitter. SUMMARY

[0004] In order to solve the above technical problems, the utility model aims at providing a chair seat, a gas bag assembly that can be inflated or deflated to expand or contract is arranged in the seat frame, when the sitter relaxes, the net cloth can form elastic support for the sitter, when the sitter works, the lifting gas bag and the jacking gas bag are inflated to form double lifting force on the net cloth, change the pelvic angle and greatly reduce the pressure on the spine, correct the sitting posture at the same time, make the sitter keep the upright posture, and reduce the risk of spinal misalignment or lumbar muscle strain of the sitter.

[0005] The technical scheme of the utility model is implemented as follows:

[0006] A chair seat comprises a seat frame and a gas bag assembly arranged in the seat frame, the seat frame is provided with net cloth that is taut at the initial height position at the open upper end of the seat frame; the gas bag assembly comprises a plurality of gas bags stacked up and down, the gas bags can be inflated to expand or deflated to contract; the plurality of gas bags stacked up and down are divided into lifting gas bags at the top end for acting on the net cloth, and single or multiple jacking gas bags at the lower end of the lifting gas bags;

[0007] The chair seat has a leisure support mode and a correction support mode. When the chair seat is in the leisure support mode and the mesh fabric is subjected to sitting force, the mesh fabric sinks from an initial height position into the seat frame; when the chair seat switches to the correction support mode, the lifting air bag is inflated and expanded to form a first lifting force on the mesh fabric subjected to the sitting force, and the jacking air bag is inflated and expanded to upwardly jack up the lifting air bag, so that the lifting air bag forms a second lifting force on the mesh fabric subjected to the sitting force to upwardly lift the mesh fabric to the initial height position or above the initial height position.

[0008] As preferred, each two adjacent upper and lower stacked air bags are communicated with each other, so that the air pressure inside the plurality of air bags is the same after inflation; preventing the sitting person from changing the sitting posture again due to different air bag pressures when standing up.

[0009] As preferred, the plurality of upper and lower stacked air bags are integrally formed, and the lower surface of the upper air bag and the upper surface of the lower air bag are provided with communication ports, and the positions of the two communication ports correspond to each other, so that the plurality of upper and lower stacked air bags are communicated with each other.

[0010] As preferred, the plurality of upper and lower stacked air bags in the air bag assembly are independent of each other, and each two adjacent upper and lower air bags are communicated through a connecting pipe.

[0011] As preferred, the upper surface and the lower surface of each air bag are symmetrical, and when the sinking part of the mesh fabric is lifted to the initial height position or above the initial height position, the upper surface and the lower surface of each air bag are inflated to be arc surfaces, and a deformation space is formed between each two adjacent arc surfaces; when the force position of the mesh fabric changes, the air bag deforms and the size of the deformation space changes accordingly; the deformation space prevents the two air bags from being pressed against each other when deforming, so as to better adapt to the change of the sitting position.

[0012] As preferred, the mesh fabric is lifted to the initial height position or above the initial height position, and when the force position of the mesh fabric changes, the upper surface of the lifting air bag deforms to adapt to the change of the force position of the mesh fabric; so that the air bag assembly retains the elastic sitting feeling while acting on the mesh fabric.

[0013] As preferred, when the mesh fabric is lifted to the initial height position or above the initial height position, the jacking air bag is inflated and expanded to upwardly jack up the lifting air bag, so that the upper surface of the lifting air bag deforms after acting on the mesh fabric, so as to gradually increase the contact area between the upper surface of the lifting air bag and the mesh fabric.

[0014] As preferred, the left and right sides and the rear side of the seat frame are provided with the air bag assembly, and the three air bag assemblies are arranged in a U shape in the seat frame; so that the three air bag assemblies support the left and right sides of the hip and the hip, which is more in line with ergonomics.

[0015] As preferred, three air bags in the same layer are integrally formed and communicated with each other in the three air bag assembly.

[0016] As preferred, the middle part of the front end of each air bag is concave backward, and an empty area is formed at the front end of the air bag; the shape of the air bag is adapted to the human body structure, and is more ergonomic.

[0017] As preferred, the area ratio of the upper surface of each air bag to the sitting surface of the mesh cloth is in the range of 1:4-4:5.

[0018] As preferred, the outer surfaces of every two adjacent air bags in the air bag assembly are kept relatively fixed; the two adjacent air bags are prevented from moving laterally after sitting.

[0019] As preferred, the outer surfaces of every two adjacent air bags are fixedly connected by a hot pressing process.

[0020] As preferred, a gas charging and discharging pump is arranged in the seat frame for charging and discharging the air bags, and the gas charging and discharging pump is connected to one of the air bags or one of the connecting pipes through an air pipe.

[0021] As preferred, a control switch is arranged outside the seat frame and electrically connected to the gas charging and discharging pump; the control switch is convenient for controlling the charging and discharging of the air bag assembly, so that the chair seat can be freely switched between the leisure support mode and the correction support mode according to the needs of the user.

[0022] The beneficial effects of the utility model with the above technical scheme are:

[0023] 1. When the sitter rests, the mesh cloth will sink and provide comfortable support; when the sitter works, the lifting air bag and the lifting air bag arranged in the seat frame can be inflated and expanded to form a double lifting effect on the mesh cloth, change the pelvic angle and greatly reduce the pressure on the spine, at the same time, correct the sitting posture, so that the sitter maintains an upright posture, and the risk of spinal misalignment or lumbar muscle strain is reduced.

[0024] 2. The lifting air bag and the lifting air bag constitute a multi-layer air bag structure, compared with a single-layer air bag structure, the multi-layer air bag structure can provide multiple times of the lifting height of a single air bag to make up for the height difference between the air bag assembly and the mesh cloth, so that the mesh cloth can be subjected to sufficient lifting force in the correction support mode of the chair seat. Therefore, under the premise that the air bag assembly provides sufficient lifting force to the mesh cloth, the lifting air bag and the lifting air bag can not be fully inflated when inflated, at this time, the lifting air bag is subjected to greater reaction force from the mesh cloth, so that the contact area between the lifting air bag and the mesh cloth is increased, part of the elastic support force is reserved for the sitter, a larger support area is provided, and the service life of the air bag assembly is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Structure diagram of net cloth being taut on seat frame;

[0026] Figure 2 Structure diagram of air bag assembly inside seat frame;

[0027] Figure 3 Sectional view of lifting air bag and jacking air bag being contracted in leisure support mode;

[0028] Figure 4 Sectional view of lifting air bag and jacking air bag lifting net cloth after being inflated in correction support mode;

[0029] Figure 5 Diagram of three air bag assemblies being arranged in U shape in seat frame in embodiment 2;

[0030] Figure 6 Diagram of three air bags of same layer being integrally formed in embodiment 2;

[0031] Figure 7 Diagram of lifting air bag and jacking air bag lifting net cloth after being inflated in embodiment 2;

[0032] Figure 8 Sectional view of lifting air bag and jacking air bag being contracted in embodiment 2;

[0033] Figure 9 Sectional view of lifting air bag and jacking air bag lifting net cloth after being inflated in embodiment 2;

[0034] Figure 10 Sectional view of lifting air bag and jacking air bag lifting net cloth after being inflated in embodiment 3;

[0035] Figure 11 Diagram of shape of lifting air bag and jacking air bag in embodiment 4;

[0036] The reference signs are as follows: 1-seat frame, 2-net cloth, 3-lifting air bag, 3a-jacking air bag, 4-gas charging and discharging pump, 5-air pipe, 6-connection pipe, 7-control switch, 11-housing cavity, 31-deformation space, 32-communication pipe, 33-communication opening, 34-clearance. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above purpose, features and advantages of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0039] This utility model has multiple embodiments, and the specific implementation methods are as follows:

[0040] Example 1: As Figures 1-4 As shown, this embodiment provides a chair seat, including a seat frame 1 and an airbag assembly disposed within the seat frame 1. The upper open end of the seat frame 1 is provided with a mesh fabric 2 taut at an initial height position. The airbag assembly includes multiple airbags stacked vertically. The airbags can inflate by inflating and deflate by deflating. In this embodiment, the outer contour of the airbag is rectangular, and its upper and lower surfaces are protruding arc surfaces, making it look like a pillow. The multiple stacked airbags are divided into a lifting airbag 3 at the top and used to act on the mesh fabric 2, and one or more lifting airbags 3a at the lower end of the lifting airbag 3.

[0041] The chair seat has a relaxation support mode and a correction support mode. In the relaxation support mode, the mesh fabric 2 is the main support component. When the mesh fabric 2 is subjected to sitting force, it sinks into the seat frame 1 from its initial height position. When the chair seat switches to the correction support mode, the lifting airbag 3 inflates and forms a first lifting force on the mesh fabric 2 subjected to sitting force. At the same time, the jacking airbag 3a inflates and jacks the lifting airbag 3 upward, causing the lifting airbag 3 to move upward and form a second lifting force on the mesh fabric 2 subjected to sitting force, so as to lift the mesh fabric 2 to be level with or above the initial height position.

[0042] Furthermore, the lifting airbag 2 and the jacking airbag 3a constitute a multi-layer airbag structure. Compared to a single-layer airbag structure, the multi-layer airbag structure can provide a lifting height many times greater than that of a single airbag to compensate for the height difference between the airbag assembly and the mesh fabric 2. This ensures that the mesh fabric 2 receives sufficient lifting force when the chair is in the corrective support mode. Therefore, provided that the airbag assembly provides sufficient lifting force to the mesh fabric 2, the jacking airbag 3a and the lifting airbag 3 do not need to be fully inflated. At this time, the lifting airbag 3 receives a greater reaction force from the mesh fabric 2, which increases the contact area between the lifting airbag 3 and the mesh fabric 2. This provides a larger support area while retaining some elastic support for the occupant, and also improves the service life of the airbag assembly.

[0043] Further, in order to ensure the effect of the chair seat on the sitting posture correction of the sitter, each two adjacent upper and lower stacked air bags are connected to each other, so that the air pressure inside the plurality of air bags is the same after inflation; when the sitter slightly moves the body, the gas between the plurality of air bags flows between each other, and the phenomenon of one side being high and the other side being low does not occur, thereby adapting to the left or right leaning posture of the user, and preventing the sitter from changing the sitting posture again due to different air bag pressures when standing up.

[0044] Further, the connection mode between the plurality of air bags is various, for example, in the air bag assembly in the embodiment, the plurality of upper and lower stacked air bags are independent of each other, and each two adjacent upper and lower air bags are connected by a connecting pipe 6, so that when one air bag is inflated or deflated, the remaining air bags will also expand or contract synchronously.

[0045] Further, the seat frame 1 has a receiving cavity 11, compared to arranging a single air bag in the receiving cavity 11, the plurality of upper and lower stacked air bags can provide a more comfortable sitting feeling under the premise of correcting the sitting posture, specifically, the upper surface and the lower surface of each air bag are symmetrical, when the sunken part of the mesh cloth 2 is lifted up to the initial height position or exceeds the initial height position, the upper surface and the lower surface of each air bag are inflated to be arc surfaces, and a deformation space 31 is formed between each two adjacent arc surfaces; when the stress position of the mesh cloth 2 changes, the air bag deforms and the size of the deformation space 31 changes correspondingly; the existence of the deformation space 31 prevents the two air bags from being pressed against each other when deforming, avoids the air bag from being deformed and rigid, and thus better adapts to the change of the sitting position, thereby providing a comfortable sitting feeling for the sitter.

[0046] Further, the lifting air bag 3 has a certain elasticity after inflation, when the mesh cloth 2 is lifted up to the initial height position or exceeds the initial height position, and the stress position of the mesh cloth 2 changes, the upper surface of the lifting air bag 3 in the full state or the unfull state deforms to adapt to the change of the stress position of the mesh cloth 2; the air bag assembly retains the elastic sitting feeling while acting on the mesh cloth 2.

[0047] Further, in the correction and support state of the chair seat, the multi-layer air bag structure can also enhance the lifting effect of the lifting air bag 3 on the hips, specifically, since the upper surface of the lifting air bag 3 is an arc surface, the supporting area of the lifting air bag 3 on the hips is small and the lifting feeling is poor, therefore, the multi-layer air bag structure in the embodiment has more advantages, when the mesh cloth 2 is lifted up to the initial height position or exceeds the initial height position, the jacking air bag 3a expands by inflation and jacks up the lifting air bag 3, so that the upper surface of the lifting air bag 3 deforms after acting on the mesh cloth 2, to gradually increase the contact area between the upper surface of the lifting air bag 3 and the mesh cloth 2, and improve the lifting feeling of the lifting air bag 3 on the hips.

[0048] Further, when the air bag assembly is inflated, the upper surface of the lifting air bag 3 is in contact with the mesh cloth 2, and the upper surface of the corresponding lifting air bag 3a is in contact with the lifting air bag 3, so the area of the upper surface of each air bag needs to be kept within a reasonable range. If the area of the upper surface of the air bag is too small, it is difficult to form sufficient contact area with the mesh cloth 2, and if the area of the upper surface of the air bag is too large, it will affect the structural layout of the entire seat frame 1. Therefore, in this embodiment, the area of the upper surface of each air bag is in the range of 1:4-4:5 compared to the area of the sitting surface of the mesh cloth 2, and the structural layout in the seat frame 1 is reasonable.

[0049] Further, in order to ensure that the air bags do not slide horizontally relative to each other when sitting and to ensure the sitting function, in the air bag assembly of this embodiment, the outer surfaces of every two adjacent air bags are kept relatively fixed, preventing the two adjacent air bags from moving horizontally after sitting. Specifically, there are many ways to fix the two adjacent air bags, and in this embodiment, the outer surfaces of every two adjacent air bags are fixed and connected by a hot pressing process, which has stable fixing effect. In addition, magic tape or other methods can also be used to connect and fix the outer surfaces of the two adjacent air bags.

[0050] Further, the air bag assembly is inflated or deflated by charging and discharging, and in this embodiment, a charging and discharging pump 4 for charging and discharging the air bags is arranged in the seat frame 1, and the charging and discharging pump 4 is connected to one of the air bags or one of the connecting pipes 6 through an air pipe 5.

[0051] Further, a control switch 7 electrically connected to the charging and discharging pump 4 is arranged outside the seat frame 1. The control switch 7 is convenient for controlling the charging and discharging of the air bag assembly, so that the chair seat can be freely switched between the leisure support mode and the correction support mode according to the user's needs.

[0052] Embodiment 2: The difference between this embodiment and the above embodiment is that, as shown in Figure 5 the arrangement of the air bag assembly in this embodiment is different, and the left and right sides and the rear side of the seat frame 1 are each provided with the air bag assembly, and the three air bag assemblies are arranged in a U shape in the seat frame 1. The air bag assemblies on the left and right sides and the air bag assembly on the rear side are all connected through a communication pipe 32, so that the three air bag assemblies form a U-shaped flexible support area, which can correspond to the positions of the hips and buttocks of the sitter, and is more in line with ergonomics. When multiple air bags are inflated, they can form a flexible suspension support for the corresponding positions, providing a comfortable lifting feeling for the sitter.

[0053] Further, in this embodiment, the three air bag assemblies can also be connected without the communication pipe 32, as shown in Figures 6-9As shown in the figure, three air bags in the same layer are integrally formed and communicated with each other in the three air bag assemblies, so that the seat frame 1 is equivalent to installing a plurality of air bags in the shape of U and arranged in multiple layers up and down, so that the contact area of the air bag assembly to the mesh cloth 2 is larger, and the comfort of the topmost lifting air bag 3 to the hip of the buttocks of the seated person is ensured when the mesh cloth 2 is lifted.

[0054] Embodiment 3: The difference between this embodiment and the above embodiments is that no connecting pipe 6 is used to communicate two adjacent air bags in this embodiment; as shown in the figure, Figure 10 a plurality of air bags stacked up and down are integrally formed, and the forming usually adopts a hot pressing process; in each two adjacent air bags up and down, the lower surface of the upper end air bag and the upper surface of the lower end air bag are provided with a communication port 33, and the positions of the two communication ports 33 correspond to each other, so that the plurality of air bags stacked up and down are communicated with each other; the design of the connecting pipe 6 is cancelled, and the plurality of air bags are communicated with each other and maintain the same air pressure under the premise of saving cost and assembly time.

[0055] Embodiment 4: The difference between this embodiment and the above embodiments is that the shape of the air bag is different in this embodiment, as shown in the figure, Figure 11 the front end of each air bag in this embodiment is concave to the rear, and further forms an empty area 34 at the front end of the air bag; the shape of the air bag is adapted to the human body structure, and when the buttocks are seated on the mesh cloth 2, the empty area 34 can better avoid the crotch, and is more in line with ergonomics.

[0056] The above describes the present application and its embodiments in a schematic manner, which is not restrictive, and the figure shown is only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the present application, similar structural modes and embodiments can be designed without creativity, which shall belong to the protection scope of the present application.

Claims

1. A chair seat, characterized in that, The airbag assembly includes a seat frame (1) and an airbag assembly arranged in the seat frame (1), and the upper end of the seat frame (1) is provided with a mesh cloth (2) which is taut at the initial height position; the airbag assembly includes a plurality of airbags stacked up and down, which can be inflated to expand or deflated to contract; the plurality of airbags stacked up and down are divided into a lifting airbag (3) at the top end for acting on the mesh cloth (2), and a single or multiple jacking airbags (3a) at the lower end of the lifting airbag (3). The chair seat has a leisure support mode and a correction support mode, when the chair seat is in the leisure support mode and the mesh cloth (2) is subjected to a sitting force, the mesh cloth (2) sinks from the initial height position into the seat frame (1); when the chair seat switches to the correction support mode, the lifting airbag (3) is inflated and expanded to form a first lifting force on the mesh cloth (2) subjected to the sitting force, and at the same time, the jacking airbag (3a) is inflated and expanded to upwardly jack up the lifting airbag (3), so that the lifting airbag (3) forms a second lifting force on the mesh cloth (2) subjected to the sitting force, to upwardly lift the mesh cloth (2) to the initial height position or above the initial height position.

2. A seat as claimed in claim 1, characterised in that: Each two adjacent airbags stacked up and down are communicated with each other, so that the air pressure in the plurality of airbags is the same after inflation.

3. A seat as claimed in claim 2, characterised in that: The plurality of airbags stacked up and down are integrally formed, and the lower surface of the upper airbag and the upper surface of the lower airbag in each two adjacent airbags stacked up and down are provided with a communication port (33), and the positions of the two communication ports (33) correspond to each other, so that the plurality of airbags stacked up and down are communicated with each other.

4. A seat as claimed in claim 2, wherein: The plurality of airbags stacked up and down in the airbag assembly are independent of each other, and each two adjacent airbags stacked up and down are communicated through a connecting pipe (6).

5. A seat as claimed in claim 1, characterized in that: The upper surface and the lower surface of each airbag are symmetrical, and when the sinking part of the mesh cloth (2) is upwardly lifted to the initial height position or above the initial height position, the upper surface and the lower surface of each airbag are expanded into arc surfaces, and each two adjacent arc surfaces form a deformation space (31) therebetween; when the force position of the mesh cloth (2) changes, the airbag deforms and the size of the deformation space (31) changes accordingly.

6. A seat as claimed in claim 1, wherein: When the mesh cloth (2) is upwardly lifted to the initial height position or above the initial height position and the force position of the mesh cloth (2) changes, the upper surface of the lifting airbag (3) deforms to adapt to the change of the force position of the mesh cloth (2).

7. A seat as claimed in claim 1, characterized in that: When the mesh cloth (2) is upwardly lifted to the initial height position or above the initial height position, the jacking airbag (3a) is inflated and expanded to upwardly jack up the lifting airbag (3), so that the upper surface of the lifting airbag (3) deforms after acting on the mesh cloth (2), to gradually increase the contact area between the upper surface of the lifting airbag (3) and the mesh cloth (2).

8. A seat as claimed in claim 1, characterized in that: The left and right sides and the rear side in the seat frame (1) are provided with the airbag assembly, and the three airbag assemblies are arranged in a U shape in the seat frame (1).

9. A seat as claimed in claim 8, characterised in that: In the three airbag assemblies, the three airbags in the same layer are integrally formed and communicated with each other.

10. A seat as claimed in claim 1, characterized in that: The front end of each airbag is concave to the rear, thereby forming an empty area (34) at the front end of the airbag.

11. A seat as claimed in claim 1, characterized in that: The area ratio of the upper surface of each airbag to the sitting surface of the mesh cloth (2) is in the range of 1:4-4:

5.

12. A seat as claimed in claim 1, characterized in that: In the air bag assembly, every two upper and lower adjacent air bag outer surfaces are kept relatively fixed.

13. A seat as claimed in claim 12, characterised in that: Every two upper and lower adjacent air bag outer surfaces are fixedly connected through a hot pressing process.

14. A seat as claimed in claim 2, wherein: The seat frame (1) is provided with a charging and discharging pump (4) for inflating and deflating the air bag, and the charging and discharging pump (4) is connected with one of the air bags or one of the connecting pipes (6) through an air pipe (5).

15. A seat as claimed in claim 14, characterised in that: The seat frame (1) is externally provided with a control switch (7) electrically connected with the charging and discharging pump (4).

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