CN215126350U - Chair back structure and supporting part structure of posture correcting chair - Google Patents

Abstract

The utility model discloses a chair back structure and a supporting part structure of a posture correcting chair, which comprises a seat surface of the chair and a backrest arranged on the chair; the method is characterized in that: the backrest is provided with a supporting part towards the direction of the seat, so that when a person sits in a normal sitting state, the supporting part is positioned at the lumbar curvature part of the lumbar to support the lumbar; when sitting upright, the backrest can support the bending part of the lumbar vertebra, thereby sharing the pressure of part of body to the vertebra and reducing the fatigue feeling when sitting upright; meanwhile, as the backrest is convex towards the seat, the discomfort caused by forward leaning of the body is increased; through the two aspects, a person sitting on the seat can naturally select a sitting posture, and the chair has an important restraint effect on correcting the sitting posture of a student.

Description

Chair back structure and supporting part structure of posture correcting chair

Technical Field

The utility model relates to a seat field, more specifically the utility model relates to a back of the chair structure and supporting part structure of positive appearance seat that says so.

Background

The chair is a seat with a backrest, and is also provided with armrests; chairs are very common in life, for example in offices of enterprises and institutions, school sites.

In schools, students have high dependence on tables and chairs; the diseases of the myopia of the students are obviously increased due to factors such as more students in class, excessive use of eyes, poor sitting posture for a long time and the like, and particularly, the diseases are more obvious when the students are subjected to compulsory education for nine years; in the adolescent period, the body of the student is in the development stage, and the student has a good sitting posture, so that the problem of suffering from myopia can be effectively solved, and the student has a positive effect on normal development of the body (particularly on avoiding the problem of stooping).

For a student, the correct sitting position is to retract the chin and head to the shoulder, the two scapulae are retracted backwards, the big arm is rotated outwards slightly to open the chest, and the scapulae sink down to make the clavicle level in a straight line as much as possible. The spine is straightened to make the upper half body heavy and the heart fall on the ischia, and the waist and the abdomen are kept tightened to a certain degree to maintain the posture of the spine. The feet fall right ahead of the knees, and the feet and knees all towards the right ahead. In a simple way, the waist is raised (in a sitting state), the body and the bottom surface form approximately 90 degrees, and the sitting posture can ensure that the distance between the glasses and the desktop is about 30cm when students learn and read, and is very favorable for protecting the glasses; however, it is known that the sitting posture of straightening the waist is still performed for a short time, but the long-term waist holding is tired mainly because the lumbar bears most of the weight of the upper half of the body, and if strong self-restraint capability is needed to be maintained, the self-restraint capability is poor for students, and obviously, the problem cannot be solved by self-discipline.

At present, the backrest and the seat plate of the seat with the backrest basically form an obtuse angle structure, and the backrest can support the waist to a certain extent when a human body leans backwards, so that the fatigue of sitting and standing is relieved; when leaning backwards, the body is in a backward leaning state, which is very uncomfortable when a student writes, and the proper state is that the upper half of the body bends forwards, the gravity center of the body is supported on the table top through two arms to share one part, which is relatively comfortable, so that most people sitting for a long time at present keep the sitting posture, as shown in figure 1 in the specification; however, such a sitting posture is obviously not good for eyes and is also very bad for waist. Therefore, the problem that the existing seat cannot solve is how to keep the correct sitting posture for a long time to read and write, and fatigue is not easy to generate.

Disclosure of Invention

In view of the above, the present invention provides a chair back structure and a supporting portion structure of a posture correcting chair, wherein when sitting upright, the backrest supports the bending portion of the lumbar vertebrae, thereby sharing the pressure of a part of the body to the spine and reducing the fatigue feeling when sitting upright; meanwhile, as the backrest is convex towards the seat, the discomfort caused by forward leaning of the body is increased; through the two aspects, a person sitting on the seat can naturally select a sitting posture, and the chair has an important restraint effect on correcting the sitting posture of a student.

In a first aspect, the present application provides a chair back structure of a posture correcting chair, comprising a seat surface of the chair and a backrest mounted on the chair; the backrest is provided with a supporting part towards the direction of the seat, so that when a person is in a normal sitting state, the supporting part is positioned at the lumbar curvature part of the lumbar to support the lumbar.

With reference to the first aspect, in particular to the arrangement of the backrest, the backrest and the seat are in an acute angle structure, and the seat surface of the seat has a backward slope of 5-15 °. So as to ensure that the whole desktop can be fully seated by the buttocks when the user sits normally, and ensure that the effect of the supporting part is always the best effect.

With reference to the first aspect, when the backrest is specifically provided, the backrest is integrally formed with the seat, and the support portion is formed on the backrest at a lumbar position by bending toward the seat; in addition, another mode is to bend the seat to form a backrest frame, and a support portion is detachably fixed to the backrest frame.

With reference to the first aspect, when the backrest is specifically provided, the backrest has a vertical structure, and an arch-shaped protrusion is formed on the backrest at a lumbar position toward the seat, and the protrusion forms a support portion.

In combination with the first aspect, when the backrest is specifically arranged, the backrest is provided with the arched interlayer at the waist position towards the seat direction, a supporting part is arranged in a cavity formed between the backrest and the interlayer, and the supporting part can move up and down in the cavity so as to achieve the purpose of adjusting the height of the supporting part.

With reference to the first aspect, in particular, when the backrest is provided, the support portion is attached to the backrest so as to be vertically slidable, and the support portion is adapted by vertically sliding the support portion.

After the backrest is adjusted up and down, the supporting part and the backrest are locked and positioned through the locking mechanism.

With reference to the first aspect, when the backrest is specifically provided, a through hole is horizontally formed in the backrest, and the support portion is installed in the through hole, so that the support portion can slide back and forth.

After the backrest is adjusted forwards and backwards, the supporting part and the backrest are locked and positioned through the locking mechanism.

With reference to the first aspect, the support is a hard support, and a layer of cloth or sponge is covered on the surface of the support. The supporting part still can be pressed by the sponge.

In a second aspect, the application provides a supporting portion structure of a posture correcting seat, which comprises a supporting portion, wherein the supporting portion is provided with an arc-shaped backup plate, a waist curve is arranged in the middle of the inner concave portion of the backup plate and is of an arch structure, the arc of the backup plate is a transverse arc, and the arch of the waist curve is of a longitudinal arc structure.

In combination with the second aspect, the height of the bulge is 5 to 25 mm.

The beneficial effect of this application is as follows:

firstly, in the conventional seat, the backrest usually forms an obtuse angle structure with the seat surface of the seat, so that a user can conveniently lean backwards to rest; however, for students, most postures (writing and listening) cannot lean against the seat, and the best state is that the students are sitting and listening, so that the attention can be concentrated and the eyesight is good; however, sitting upright is tired, so most students can choose the forward leaning state that the upper half of the body is arched when writing, which is very unfavorable for eyesight; the utility model aims to solve the problems that when a student sits normally, an effective support is formed on the waist by using a support part, the gravity of the upper half body shares a part by the support part, and the gravity of the upper half body shares a part by both arms and a part by the hip (during writing), so that the fatigue and pain of the student sitting normally can be relieved by sharing the gravity of the upper half body by three points; this is an aspect, both to improve comfort when sitting upright; secondly, because of the arrangement of the supporting part, when a student writes, if the waist of the student leans forward in an arched shape, the waist of the student is placed on top of the supporting part to be difficult to feel, the discomfort of the bending state is enhanced, and the student can actively sit upright (the chair is most friendly to the sitting upright state) and is the most comfortable state by combining the two aspects, so that the sitting posture problem and the eyesight problem of the student are solved.

Moreover, the biggest characteristic of the application is that the problem is solved not by constraint but by creating a comfortable state, and the constraint cannot lead the student to sit upright actively and permanently; only when a relatively comfortable condition is created, the sitting posture of the student can be kept to be upright for a long time, and the sitting posture of the student is obviously improved through the design.

Drawings

Fig. 1 is a schematic view of a normal spine of a body.

Fig. 2 is a schematic diagram comparing an improper sitting posture and a correct sitting posture (wherein a is the improper sitting posture and b is the correct sitting posture).

Fig. 3 is a schematic structural diagram of embodiment 1 of the present application.

Fig. 4 is another schematic structural diagram of embodiment 1 of the present application.

Fig. 5 is a schematic structural diagram of embodiment 2 of the present application.

Fig. 6 is a schematic side view of embodiment 3 of the present application.

Fig. 7 is a schematic perspective view of embodiment 3 of the present application.

Fig. 8 is a schematic structural diagram of embodiment 4 of the present application.

Fig. 9 is a schematic structural diagram of embodiment 5 of the present application.

Fig. 10 is a schematic structural diagram of embodiment 6 of the present application.

In the figure, 1, a sitting surface; 2. a backrest; 3. a support portion; 3.1, a support body; 3.2, fixing a rod; 4. the waist is curved and convex.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

In order to facilitate understanding of the seat structure provided in the embodiments of the present application, the following first describes an application scenario thereof.

The chair mainly aims at students as main crowds, and is a middle and primary school student, because the middle and primary school student develops the fastest, the chair has a correct sitting posture, the body of the student can be well developed, and the problem of myopia can be avoided.

For a clear understanding of the technical solutions of the present application, the seat provided in the present application will be described in detail below with reference to specific embodiments and accompanying drawings.

The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" means one, two or more.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

Fig. 1 is a schematic diagram showing the structure of the spine of a normal human body, which is not a straight line but has an s-shaped structure, wherein the spine of the waist has a curved structure.

As shown in fig. 2, a long-term sitting posture of a human body can cause lumbar vertebra deformation and myopia; most students are in poor sitting posture as shown in fig. 2 (a).

The chair back structure of the posture correcting chair solves the problems and is provided, and the chair comprises a chair and a backrest 2 arranged on the chair; the upper part and the lower part of the chair can be adjusted, which is the same as the traditional desk chair and aims at adapting to students of different grades; on the basis, the backrest 2 of the seat is mainly improved, and the backrest is specifically as follows: the supporting part 3 is formed in the direction that the backrest 2 protrudes towards the seat, so that when a person sits in a normal sitting state, the supporting part 3 is positioned at the waist curve part of the lumbar to support the waist, and after the supporting part 3 supports the waist, the force borne by the lumbar is shared partially, so that the fatigue of the person is reduced.

The backrest 2 in the application is mainly characterized in that the backrest 2 and the seat form an acute angle structure and are hard supports; meanwhile, the seat surface 1 of the seat is arranged to have a slope of 5-15 degrees backwards, so that the purpose of enabling the waist of a student to be stably contacted with the supporting part 3 after the student sits stably is to ensure that a user sits on the seat and the hip of the student can be fully seated on the seat surface 1 of the whole seat, and the effect is in the best state.

The combination of the two characteristics can lead the user to naturally form the best sitting state with the table and chair when sitting and standing, and the best sitting effect can be found from the sitting posture feeling, thereby achieving the best effect, and the sitting state with the best effect is that the waist curve of the waist is just contacted with the supporting part 3, and the position of the hip is the best at the moment.

Example 1

As shown in fig. 3, in the specific implementation of the seat, the backrest 2 is integrally formed with the seat surface 1 of the seat, wherein the seat surface 1 of the seat has a backward slope of about 10 °; and lie in waist position department on back 2 and form supporting part 3 towards the seat bending for whole back 2 is the S-shaped structure, and the parcel has a layer of cloth on supporting part 3, and it has the thick sponge of one deck 5mm to fill between cloth and back 2, and the user is when sitting, and the buttock is sat and is filled up to whole sitting face 1, on the back' S waist curve department laminating supporting part 3. When the chair is specifically arranged, a plurality of sets of chairs with different heights of the supporting parts 3 need to be arranged, so that the chair can be applied to students with different heights.

In addition, another way is similar to the structure of the embodiment 1, as shown in fig. 4, the way separates the backrest 2 from the seat surface 1 of the seat, and the two parallel L-shapes are connected through a cross rod to form a seat frame structure, wherein the seat surface 1 is fixed on the horizontal plane of the seat frame through bolts, and the arched backrest 2 is fixed on the vertical plane of the seat frame through bolts to form a supporting part 3; and the backrest 2 and the seat surface form an acute angle structure, and the seat surface 1 and the backrest 2 of the seat are connected through the seat frame to form the seat. The structure is easier to implement during processing, and parts can be detached and replaced.

Example 2

As shown in fig. 5, in the present embodiment, the backrest 2 is mainly configured, specifically: the backrest 2 is of a vertical structure, and an arch-shaped bulge is integrally formed on the backrest 2 at the waist position and towards the seat direction to form a support part 3; the backrest 2 and the seat surface 1 can be separated into a whole, and the support part 3 is a hard support.

Example 3

As shown in fig. 6, in the present embodiment, the support portion 3 on the backrest 2 is mainly disposed to be adjustable up and down, so as to adapt to students of different grades, and improve the universality of the seat; the method comprises the following steps: the backrest 2 is located at the waist position and provided with an arched interlayer facing the seat direction, a cavity is formed between the interlayer and the backrest 2, the supporting part 3 is installed in the cavity formed between the backrest 2 and the interlayer, and the supporting part 3 can move up and down in the cavity so as to achieve the purpose of adjusting the height of the supporting part 3. As shown in fig. 7, wherein, the supporting portion 3 has a horizontal arched supporting body 3.1, a fixing rod 3.2 is horizontally disposed and is connected with the supporting body 3.1 by welding, and a through groove is vertically processed at the position of the cavity on the backrest 2, when the supporting portion 3 is installed, the supporting body 3.1 is horizontally disposed in the cavity, the fixing rod 3.2 extends into the through groove through the through groove, a snap ring is disposed on one side of the backrest 2 on the fixing rod 3.2, a nut is disposed on the fixing rod 3.2 on the other side of the backrest 2, and by tightening the nut, the sliding fixing rod 3.2 moves up and down, the position of the supporting body 3.1 is kept by locking the nut, and the height of the supporting portion 3 is adjusted.

Example 4

As shown in fig. 8, in the present embodiment, the support portion 3 of the backrest 2 is mainly disposed, and the support portion 3 is adjustable up and down by another structure, specifically: the seat has a back 2, the vertical processing on the back 2 has two sets of through-holes, be fixed with a vertical dead lever 3.2 on the supporting part 3, dead lever 3.2 inserts in the through-hole, realize its height adjustment through the supporting part 3 that slides from top to bottom, in addition, need lock the position to supporting part 3 after adjusting, along radial processing threaded hole on the through-hole, threaded hole and through-hole intercommunication are provided with locking bolt at the threaded hole, realize fixing whether dead lever 3.2 through the elasticity bolt, thereby realize the position locking to supporting part 3.

Example 5

As shown in fig. 9, in this embodiment, mainly set up supporting portion 3 to back 2, set up supporting portion 3 as adjustable from beginning to end, through adjusting supporting portion 3 from beginning to end, adapt to different crowds' waist curve for supporting portion 3 is inseparabler and comfortable with the laminating of waist curve, specifically is: the seat is provided with a backrest 2, a through hole is horizontally processed on the backrest 2, an adjusting rod is horizontally and backwards fixed on the supporting part 3, the adjusting rod is positioned in the through hole and can slide back and forth in the through hole, and the back and forth adjustment of the supporting part 3 is realized; meanwhile, in this embodiment, the support portion 3 also needs to be locked, specifically, a threaded hole is formed in the backrest 2 above the through hole, the threaded hole is communicated with the through hole, a locking bolt is installed in the threaded hole, and the support portion 3 is locked by tightening or loosening the locking bolt.

Example 6

As shown in fig. 10, the present application further provides a support portion structure of a posture correcting seat, which includes a support portion 3, the support portion 3 has an arc-shaped backup plate, a lumbar curvature protrusion 4 is arranged in the middle of the concave portion of the backup plate, the lumbar curvature protrusion 4 is an arch structure, the arc shape of the backup plate is a transverse arc shape, the arch shape of the lumbar curvature protrusion 4 is a longitudinal arc structure, the two are integrally formed, after a user leans on the support portion, the lumbar curvature protrusion 4 is arranged on the lumbar of the waist, and two wings of the backup plate support two sides of the waist, so that the contact area between the support portion and the waist can be increased, the comfort is better when leaning on the support portion, and the user is more willing to lean on the support portion; when specifically set, the parameters of the support part 3 are: the height of the waist-curved protrusion 4 is 5-25mm, and the width of the waist-curved protrusion 4 is 20-70 mm.

The above description has been given for the vertical and longitudinal adjustment of the support part 3, and the description has been given for the support part 3 that is not adjustable, but the vertical and longitudinal adjustment of the support part 3 may be performed simultaneously in the same seat or may be performed separately.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (11)

1. A chair back structure of a posture correcting chair comprises a seat surface (1) of the chair and a backrest (2) arranged on the chair; the method is characterized in that: the backrest (2) is provided with a supporting part (3) towards the direction of the seat, so that when a person sits in a normal sitting state, the supporting part (3) is positioned at the lumbar curvature of the lumbar to support the waist.

2. The chair back structure of a chair for correcting posture of claim 1, wherein: the backrest (2) and the seat are in an acute angle structure.

3. The chair back structure of a chair for correcting posture of claim 1, wherein: the backrest (2) is integrally formed with the seat, and the support portion (3) is formed on the backrest (2) at a lumbar position by bending toward the seat.

4. The chair back structure of a chair for correcting posture of claim 1, wherein: the chair is bent to form a backrest (2) frame, and a support part (3) is detachably fixed on the backrest (2) frame.

5. The chair back structure of a chair for correcting posture of claim 1, wherein: the backrest (2) is of a vertical structure, and an arch-shaped bulge is arranged on the backrest (2) at the waist position and faces the seat direction to form a supporting part (3).

6. The chair back structure of a chair for correcting posture of claim 1, wherein: the backrest (2) is positioned at the waist position and provided with an arched interlayer towards the direction of the seat, a supporting part (3) is arranged in a cavity formed between the backrest (2) and the interlayer, and the supporting part (3) can move up and down in the cavity so as to achieve the purpose of adjusting the height of the supporting part (3).

7. The chair back structure of a chair for correcting posture of claim 1, wherein: a support part (3) is mounted on the backrest (2) in a vertically sliding manner, and the support part (3) is adaptively adjusted through the height of the vertically sliding support part (3).

8. The chair back structure of a chair for correcting posture of claim 1, wherein: a through hole is horizontally arranged on the backrest (2), and the support part (3) is installed in the through hole, so that the support part (3) can slide back and forth.

9. A chair back structure of a chair for correcting posture according to any one of claims 1-8, wherein: the supporting part (3) is a hard support, and the surface of the supporting part (3) is covered with a layer of cloth or sponge.

10. A chair back structure of a chair for correcting posture according to any one of claims 1-8, wherein: the seat surface (1) of the seat has a backward slope of 5-15 degrees.

11. A supporting part structure of a posture correcting seat is characterized in that: comprises a supporting part (3), the supporting part (3) is provided with an arc-shaped backup plate, and a waist curve protrusion (4) is arranged in the concave part of the backup plate.

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