Chair

Abstract

The utility model discloses a chair which comprises a frame, a cushion, a backrest and a waist pillow, the frame comprises a seat frame and an armrest frame, and the seat frame and the armrest frame are connected into a whole; the seat cushion is arranged on the seat frame; the waist pillow is detachably connected into the embedded groove, a first arc-shaped supporting part is arranged on the side, used for leaning, of the waist pillow, the included angle between the lower edge of the waist pillow and the seat cushion is beta, the included angle between the upper edge of the waist pillow and the seat cushion is alpha, and beta is smaller than alpha; the backrest is detachably connected to a supporting rod at the rear end of the armrest frame, an embedded groove is formed in the lower end of the backrest, and a second arc-shaped supporting part is arranged on the side, used for leaning, of the backrest; two inclination angles are generated by the chair through the backrest and the waist pillow, so that the straight supporting performance of the chair as a book chair or a dining chair is ensured, the chair can disperse pressure for the waist, and the comfort is improved; during use, different use effects can be obtained by adjusting the sitting posture according to different use scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field, especially a chair. BACKGROUND

[0002] Chair is common furniture product in life, and most of current chairs are wooden chairs or special scene chairs such as ergonomic chairs of full scene application, and wooden chairs can provide straight support, but the waist cannot disperse pressure, and it is easy to be sick, and ergonomic chairs can only be applied in specific scenes, and it is not suitable for daily life in many scenes, for example, it is not suitable to use ergonomic chairs for dining and tea. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems in prior art, for this purpose, the utility model provides a chair, which can provide straight support in daily life, disperse pressure on the waist, improve comfort and avoid illness.

[0004] A chair according to the first aspect of the utility model, comprising a frame, a cushion, a backrest and a waist pillow, the frame comprises a seat frame and an armrest frame, the seat frame and the armrest frame are connected as a whole, the cushion is arranged on the seat frame, the waist pillow is detachably connected in the embedded groove, a side for leaning of the waist pillow is provided with a first arc-shaped support part, an included angle between the lower edge of the waist pillow and the cushion is β, an included angle between the upper edge of the waist pillow and the cushion is α, and β < α, the backrest is detachably connected on the supporting rod at the rear end of the armrest frame, the lower end of the backrest is provided with an embedded groove, and a side for leaning of the backrest is provided with a second arc-shaped support part.

[0005] A chair according to the utility model has the following beneficial effects: the chair generates two inclination angles through the backrest and the waist pillow, the lower edge of the waist pillow is 101 °, the upper edge of the waist pillow is 108 °, which ensures the straight support of the chair as a book chair or a dining chair, and ensures that the chair can disperse pressure on the waist and improve comfort, in use, different use effects can be obtained by adjusting the sitting posture according to different use scenes, the chair integrates two functions, improves the multifunctionality of the chair in scene application, and can bring great benefits.

[0006] According to some embodiments of the utility model, alpha >= 108 DEG, beta <= 101 DEG, the inclination angle 101 DEG is the inclination angle of conventional chair, the backrest is relatively straight, but the inclination angle of the backrest of general leisure sofa generally reaches 108 DEG, the inclination angle is relatively large, the pressure dispersion length on the horizontal line is longer, the pressure is more dispersed so it is more comfortable, the two angles set as threshold value make that the chair guarantees straight supportability of the chair as a book chair or dining chair, also guarantee that the chair can disperse pressure for waist, improve comfort.

[0007] According to some embodiments of the utility model, the curvature radius of the first arc-shaped support part gradually increases from top to bottom.

[0008] According to some embodiments of the utility model, the waist pillow is attached in the embedded groove through magic tape, is attached through magic tape, connection mode is simple, fixed stable, convenient to replace.

[0009] According to some embodiments of the utility model, the middle part of the waist pillow is provided with an embedded recess, and the embedded recess is used to improve the fit with the user's waist.

[0010] According to some embodiments of the utility model, the lower end of the waist pillow is provided with a hollow part, the hollow part makes the left and right sides of the waist pillow form a support leg, the support leg abuts against the cushion or the seat frame, and the hollow part is provided so that the waist pillow shrinks to the middle part when the user leans on it, providing better wrapping for the user, and also improving the contact surface with the user's waist, achieving a more comfortable effect, in addition, the hollow part can additionally insert a support body, improving the ease of modification of the chair.

[0011] According to some embodiments of the utility model, the seat frame is inclined upward from back to front, the cushion is arranged in parallel with the seat frame, and the inclination of the seat frame enables the user's gravity to be dispersed in the middle and rear position of the seat frame, so that the user's pressure is dispersed on the waist pillow and the backrest, improving the comfort and stability of sitting.

[0012] According to some embodiments of the utility model, the cushion is provided with a first profiling recess and a second profiling recess, the first profiling recess is used to accommodate the user's hips, and the second profiling recess is provided with two, the two second profiling recesses are symmetrically arranged about the middle line of the first profiling recess, and the second profiling recess is used to accommodate the user's legs, the first profiling recess and the second profiling recess are arranged to standardize the placement position of the user's legs, disperse the pressure, and avoid local collapse of the cushion caused by abnormal sitting posture.

[0013] According to some embodiments of the utility model, the front end of the cushion is provided with a protruding part, the protruding part protrudes out of the seat frame, the protruding part and the cushion have an angle gamma, the angle of gamma is adjustable, the protruding part is arranged to adjust the angle so that the angle between the calf and the thigh of the user presents an obtuse angle, and knee injury caused by long sitting is avoided.

[0014] According to some embodiments of the utility model, the lower end of the backrest abuts against the upper end of the lumbar pillow.

[0015] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Figure 1 It is a left view of the chair of the utility model embodiment;

[0018] Figure 2 It is Figure 1 It is a front view of the chair shown;

[0019] Figure 3 It is Figure 1 It is a top view of the chair shown.

[0020] Frame 100, seat frame 110, armrest frame 120, screw 121;

[0021] Cushion 200, first profiling recess 210, second profiling recess 220, protruding part 230;

[0022] Lumbar pillow 300, first arc-shaped support part 310, fitting recess 320, hollow part 330, supporting leg 340;

[0023] Backrest 400, second arc-shaped support part 410, embedded recess 420. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0025] In the description of the utility model, it needs to be understood that, if the direction description, such as the upper, lower, front, rear, left, right and other directions or positional relationship shown in the drawing is based on the direction or positional relationship, only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore it can not be understood as a limitation of the utility model.

[0026] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two and more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If the first, second is described for the purpose of distinguishing technical features, it can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0028] Refer to Figures 1 to 3 A kind of chair, including frame 100, cushion 200, backrest 400 and lumbar pillow 300, frame frame 100 includes seat frame 110 and armrest frame 120, seat frame 110 and armrest frame 120 are connected as a whole;Cushion 200 is set on seat frame 110;Lumbar pillow 300 is detachably connected in embedding groove 420, the side for leaning of lumbar pillow 300 is provided with first arc-shaped support part 310, the included angle of the lower edge of lumbar pillow 300 and cushion 200 is β, the included angle of the upper edge of lumbar pillow 300 and cushion 200 is α, β < α;Backrest 400 is detachably connected on the support rod of the rear end of armrest frame 120, the lower end of backrest 400 is provided with embedding groove 420, the side for leaning of backrest 400 is provided with second arc-shaped support part 410;Chair generates two inclination angles through backrest 400 and lumbar pillow 300, the lower edge of lumbar pillow 300 is 101 °, the upper edge of lumbar pillow 300 is 108 °, both guarantee that chair is as a book chair or dining chair straight support, also guarantee that chair can be for waist part disperses pressure, improves comfort;When using, different use scene is adjusted sitting posture to obtain different use effect, chair sets two functions in one, improves the multifunctionality of the scene application of chair, can bring huge benefit.It should be noted that frame 100 includes wooden frame, metal frame, plastic frame, carbon fiber frame and the like relatively high strength material frame suitable for making chair, it can be understood that backrest 400 is connected with the support rod of the rear end of armrest frame 120 through screw 121.

[0029] In some embodiments, α≥108°, β≤101°, the inclination angle 101° is the inclination angle of a conventional chair, the backrest 400 is relatively straight, but the inclination angle of the backrest 400 of a general leisure sofa generally reaches 108°, the inclination angle is relatively large, the length of pressure dispersion on the horizontal line is longer, the pressure is more dispersed and therefore more comfortable, and the two angles are set as threshold values, so that the chair not only ensures the straight support as a desk chair or a dining chair, but also ensures that the chair can disperse the pressure on the waist to improve comfort. It can be understood that there are two considerations for the design of the backrest. The inclination angle 101° of the backrest 400 of the conventional chair is the inclination angle of the backrest of the conventional chair, which is less than 101°, and is relatively straight. Such a chair is suitable as a desk or table chair, as it provides straight support. The inclination angle of the backrest of a general leisure sofa is up to 108°, or even greater than 108°. The inclination angle is relatively large, the length of pressure dispersion on the horizontal line is longer, the pressure is more dispersed and therefore more comfortable. The backrest 400 of the chair has two inclination angles on the backrest 400 through the waist pillow 300. The lower edge of the waist pillow 300 is 101°, and the upper edge of the waist pillow 300 is 108°. The user can experience two reclining modes by adjusting the sitting posture, which not only ensures the straight support as a desk chair or a dining chair, but also disperses the pressure on the waist. It can be understood that the waist and back of the human body have a gap, and the curvature of the backrest is designed to completely fit the gap of the waist and back, so as to make the person more comfortable.

[0030] It should be noted that at a position 110 mm in front of the front edge of the seat cushion 200, the contact position is approximately equivalent to the position of the back of the thigh to the knee after a general person sits down, and has a downward curve. The downward curve is about 61 degrees, and the downward height is about 45 mm. Compared with the general chair design, this position is generally a straight line or a small arc with a downward height of less than 45 mm, about 20 mm. Unlike ordinary people, the knee joints of the elderly are more or less damaged or suffer from various diseases, and it is difficult for them to have strong knee bending ability like young people. In the case of not bending the knee or bending to a small extent, a straight line or a seat cushion with a small drop in the front edge of the seat cushion will conflict with the curve from the thigh to the knee, causing local seat pressure to increase and blood circulation to be poor.

[0031] Second, the shape of the backrest and the waist bag is not a straight line, but a curve that fits the natural curve of the human spine better than a straight line. The backrest has no gap and a large stress area, so it is more comfortable under the same weight.

[0032] In some embodiments, the angle between the tangent plane at the vertex of the curved surface of the front end of the seat cushion 200 and the inclined surface of the seat cushion 200 is 61°, and the inclination angle of the rear leg is 78°. The purpose is to stabilize the center of gravity of the entire chair and avoid tilting when leaning back.

[0033] In some embodiments, the radius of curvature of the first arc-shaped support portion 310 gradually increases from top to bottom.

[0034] In some embodiments, the lumbar pillow 300 is attached to the embedded recess 420 by a magic tape, which is simple to connect, stable to fix, and convenient to replace. It should be noted that the lumbar pillow 300 can also be directly clamped on the armrest frame 120, and can also be attached by a double-sided adhesive tape or the like. The lumbar pillow 300 is detachably arranged in the embedded recess 420.

[0035] In some embodiments, the middle part of the lumbar pillow 300 is provided with a fitting recess 320, which is used to improve the fit with the user's waist. It can be understood that the fitting recess 320 is not completely fitted to the user's waist, but can basically match the waist of the general public and is not specific to a certain person or a certain type of person.

[0036] In some embodiments, the lower end of the lumbar pillow 300 is provided with a hollow portion 330, which forms a supporting leg 340 on the left and right sides of the lumbar pillow 300. The supporting leg 340 abuts against the seat cushion 200 or the seat frame 110. The hollow portion 330 is provided so that the lumbar pillow 300 shrinks towards the middle when the user leans on it, providing a better wrapping sensation for the user and improving the contact surface with the waist, achieving a more comfortable effect. In addition, the hollow portion 330 can also be additionally inserted with a support body, improving the ease of chair modification.

[0037] In some embodiments, the seat frame 110 is upwardly inclined from back to front, and the seat cushion 200 is arranged in parallel with the seat frame 110. The inclined arrangement of the seat frame 110 allows the user's gravity to be dispersed in the middle and rear position of the seat frame 110, so that the user's pressure is dispersed to the lumbar pillow 300 and the backrest 400, improving the comfort and stability of sitting. It can be understood that the part of the seat cushion 200 parallel to the seat frame 110 does not include the protruding portion 230, which is an additional component.

[0038] In some embodiments, the seat cushion 200 is provided with a first contoured recess 210 and a second contoured recess 220. The first contoured recess 210 is used to accommodate the user's hips, and the second contoured recess 220 is provided with two, which are symmetrically arranged about the center line of the first contoured recess 210. The second contoured recess 220 is used to accommodate the user's legs. The first contoured recess 210 and the second contoured recess 220 are arranged to standardize the placement position of the user's legs, which can disperse the pressure and avoid local collapse of the seat cushion caused by abnormal sitting posture.

[0039] In some embodiments, the front end of the seat cushion 200 is provided with a protrusion 230 protruding out of the seat frame 110, and the protrusion 230 and the seat cushion 200 have an angle γ, which can be adjusted, so that the angle between the calf and the thigh of the user presents an obtuse angle, avoiding knee injury caused by long sitting. It can be understood that the so-called angle adjustment can be that the protrusion 230 is hinged at the front end of the seat cushion 200, or the protrusion 230 is connected to the front end of the seat cushion 200 through a plastic deformation mechanism, including iron sheet or plastic, etc. It should be noted that at the position of 110mm length of the front end of the seat cushion 200, the contact position is approximately equal to the position of the back of the thigh to the knee after a general person sits down, which has a downward curve, and the downward curve is about 61 degrees, and the downward height is about 45mm. Compared with the general chair design, this position is generally a straight line or a small arc with a downward height much lower than 45mm, about 20mm. Unlike the general person, the knee joint of the elderly is more or less damaged or has various diseases, and it is difficult to have strong knee bending ability. In the case of not bending the knee or bending the knee to a small extent, the straight line or the seat cushion 200 with small difference in the front end of the seat cushion 200 will conflict with the curve from the thigh to the knee, causing local pressure increase and poor blood circulation. Therefore, the protrusion 230 is adjusted according to different groups of people to reduce the pressure received by the knee and improve the comfort and safety of long sitting.

[0040] In some embodiments, the lower end of the backrest 400 abuts the upper end of the lumbar pillow 300.

[0041] In some embodiments, the seat cushion 200, the lumbar pillow 300 and the backrest 400 are all made of shaped cotton.

[0042] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A chair, characterized in that The utility model relates to a chair frame, which comprises a seat frame (110) and an armrest frame (120) connected as a whole, a seat cushion (200) arranged on the seat frame (110), a backrest (400) detachably connected to a support rod at the rear end of the armrest frame (120), the lower end of the backrest (400) being provided with an embedded groove (420), the side for leaning against of the backrest (400) being provided with a second arc-shaped support part (410), a lumbar pillow (300) detachably connected to the embedded groove (420), the side for leaning against of the lumbar pillow (300) being provided with a first arc-shaped support part (310), the angle between the lower edge of the lumbar pillow (300) and the seat cushion (200) being beta, the angle between the upper edge of the lumbar pillow (300) and the seat cushion (200) being alpha, beta < alpha. The curvature radius of the first arc-shaped support part (310) gradually increases from top to bottom. The lumbar pillow (300) is attached to the embedded groove (420) by means of magic tape. The middle part of the lumbar pillow (300) is provided with a fitting recess (320) for fitting the waist of a user. The lower end of the lumbar pillow (300) is provided with a hollow part (330), the hollow part (330) allowing the left and right sides of the lumbar pillow (300) to form supporting legs (340) abutting against the seat cushion (200) or the seat frame (110).

2. A chair according to claim 1, characterized in that: α≥108°，β≤101°。 3. A chair according to claim 2, wherein: The seat frame (110) is upwardly inclined from back to front, and the seat cushion (200) is arranged in parallel with the seat frame (110).

4. A chair according to claim 3, wherein: The seat cushion (200) is provided with a first profiled recess (210) and a second profiled recess (220), the first profiled recess (210) being used for accommodating the hips of a user, and the second profiled recess (220) being provided with two, the two second profiled recesses (220) being symmetrically arranged about the center line of the first profiled recess (210), and the second profiled recess (220) being used for accommodating the legs of a user.

5. A chair according to claim 4, wherein: The front end of the seat cushion (200) is provided with a protruding part (230) protruding out of the seat frame (110), and the protruding part (230) and the seat cushion (200) have an angle gamma therebetween, the angle gamma being adjustable.

6. A chair according to claim 5, wherein: The lower end of the backrest (400) abuts against the upper end of the lumbar pillow (300).

7. A chair according to any one of claims 1 to 6, characterised in that: ​ 8. A chair according to claim 7, wherein: ​ 9. A chair according to claim 8, wherein: ​ 10. A chair according to claim 1, characterized in that: ​

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