RU2500323C2 - Armchair - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: invention relates to devices for sitting, namely to armchairs. The armchair comprises a support, and the seat and the bracket movably connected to it, which is connected by a hinge to the lower part of the backrest. The upper part of the backrest is hingedly connected to the lower part of the backrest. The seat is made of four parts arranged in two rows and connected to the support by springs, at that the bracket is connected to the support by a spring.

EFFECT: providing opportunity of long and comfortable sitting of the user on this device.

14 cl, 7 dwg

Description

FIELD OF TECHNOLOGY

The claimed chair relates to a device for sitting and can be used for prolonged sitting of a person.

BACKGROUND OF THE INVENTION

Known as the closest analogue is a chair for the development of muscles of the spine, containing a support and a pivotally connected seat and bracket to which the back is pivotally connected (publication RU 102304 U1, class IPC А63В 23/02, publ. 02.27.2011, Bull. No. 6).

The disadvantage of this chair is that it is not suitable for long comfortable sitting.

SUMMARY OF THE INVENTION

The technical result of the claimed chair is the creation of a chair with a movable seat and backrest, for a comfortable sitting person for a long time.

The technical result is achieved in that the chair comprises a support and a seat and a bracket movably connected to it, to which the lower back is connected through a hinge, while the upper back is pivotally connected to the lower back, and the seat is made of four parts arranged in two rows and connected to the support by means of springs, wherein the bracket is connected to the support by means of a spring.

To eliminate the possibility of a gap between the parts of the seat of one row, the parts of the seat of one row are pivotally connected to adjacent parts of the seat of the other row.

To enable elastic movement of the parts of the seat of one row, the parts of the seat of at least one row are connected to each other by means of at least one spring.

For the possibility of rotation of the chair relative to the support, the support is made in the form of a frame located on the rack, on which a platform is installed, consisting of a lower part connected to the rack and an upper part to which the seat parts are connected by means of springs, while the upper part of the platform is connected to the lower part of the platform rotatably around it, in addition, the upper part of the platform is connected to the lower part of the platform by means of a bearing.

To make it possible to move the chair, the rack is equipped with rollers for moving it.

For convenient positioning of the legs while a person is sitting on a chair, the rack is equipped with a footrest.

To evenly distribute the load on the muscles of the buttocks of a person while sitting, the supporting surfaces of the parts of the seat closest to the bracket of the row are made with recesses in the shape of the buttocks of a person.

To evenly distribute the load on the muscles of the hips of a person during a seat, the supporting surfaces of the parts of the seat of the row farthest from the bracket are made with recesses in the shape of the hips of a person.

To evenly distribute the load on the muscles of the lower back during sitting, the supporting surface of the lower back is made concave in the shape of the lower back of a person.

To evenly distribute the load on the muscles of the upper back of the person during sitting, the supporting surface of the upper back is made concave in the shape of the upper back of the person.

To reduce the load on the muscles of the neck of a person while sitting, the supporting surface of the upper back is equipped with a collar.

To create the possibility of relaxing the muscles of the hands of a person while sitting, armrests are introduced in the chair, the ends of which are pivotally connected to the ends of the brackets, and the opposite ends of the indicated brackets are connected to the lower part of the platform, while to form the opportunity to give the hands of the sitting person a comfortable position, the armrests are additionally connected to the brackets by means of springs.

To increase the stability of the upper back under the influence of loads from the upper back of a person sitting on a chair, an additional bracket is introduced to it (the chair), connected by means of springs to a support and to the upper part of the back.

BRIEF DESCRIPTION OF THE DRAWINGS

The claimed chair is illustrated using the drawings shown in figures 1-7. Figure 1 shows a side view of a chair;

figure 2 shows a rear view of the back of the chair;

figure 3 shows a bottom view of the seat of the chair;

figure 4 shows a top view of the platform without a seat;

figure 5 shows a side view of a chair equipped with an additional bracket;

figure 6 shows a side view of a chair equipped with armrests;

Fig.7 shows a side view of the upper part of the back, equipped with a collar.

DETAILED DESCRIPTION OF THE INVENTION

The claimed chair comprises a support 1 and a seat 2 and a bracket 3 movably connected to it, with which the lower part 5 of the backrest is connected via a hinge 4, while the upper part 6 of the backrest is pivotally connected to the lower part 5 of the backrest. The bracket 3 is connected to the support 1 by means of a spring 15.

The seat 2 is made of four parts 7, 8, 9 and 10, which are located in two rows. The first row is located closer to the back and includes parts 7 and 8 of the seat 2, and the second row is more distant from the back and includes parts 9 and 10 of the seat 2. Parts 7, 8, 9 and 10 of the seat 2 are connected to the support 1 by means of springs 11 , 12, 13, and 14, respectively. Parts 7 and 8 of the seat 2 of the first row are connected via hinges 16 and 17 with adjacent parts 9 and 10, respectively, of the seat 2 of the second row. The parts of the seat 2 of at least one row, for example, the parts 7 and 8 of the seat 2 are connected to each other by means of at least one spring 18. The supporting surfaces of the parts 7 and 8 of the seat 2 of the first row closest to the bracket 3 are made with recesses in the shape of the buttocks of a person, and the supporting surfaces of the parts 9 and 10 of the seat 2 of the second, most remote from the bracket 3 rows are made with recesses in the form of human hips.

The support 1 is made in the form of a frame 34 located on the stand 19, on which the platform 20 is mounted. An arm 3 is connected to the frame 34 via a spring 15. The platform 20 consists of a lower part 21 and an upper part 22, with which, by means of the above-mentioned springs 11, 12, 13 and 14 are connected parts 7, 8, 9 and 10 of the seat 2. The upper part 22 of the platform is connected to the lower part 21 of the platform with the possibility of rotation around it, for example, by means of a bearing. The stand 19 of the support 1 is equipped with rollers 23 for its movement and a footrest 24 for supporting the feet of a person sitting on a chair.

As mentioned above, the back is made of two parts - the upper part 6 of the back and the lower part 5 of the back connected to each other by a hinge 25. In this case, the supporting surface of the lower part 5 of the back is made concave in the shape of a human lower back, and the supporting surface of the upper part 6 the back is made concave in the shape of the upper back of a person. In addition, to reduce the load on the muscles of the neck of a person during sitting, the supporting surface of the upper part 6 of the back is equipped with a collar 26, which can be connected to the supporting surface of the upper part 6 of the back, for example, by means of a spring 35.

Also, the chair can be equipped with an additional bracket 27, connected by means of a spring 28 with a support 1 and by means of a spring 29 with the upper part 6 of the back.

Additionally, to create the possibility of relaxing the muscles of the hands of a person while sitting, the chair can be equipped with armrests 30, the ends of which are connected to the ends of the brackets 31 through hinges 32, and the opposite ends of these brackets are connected to the frame 34, while the armrests 30 are additionally connected to the brackets 31 by means of springs 33.

The claimed chair is implemented as follows.

A person sits on seat 2, while his right buttock is placed on the supporting surface of part 7 of seat 2, the left buttock is placed on the supporting surface of part 8 of seat 2, the back of the right thigh is placed on the supporting surface of part 9 of seat 2, the back of the left thigh is placed on the supporting surface of the part 10 of the seat 2. The springs 11, 12, 13, 14, through which the parts 7, 8, 9, 10 of the seat 2 are connected to the support 1, are compressed by the weight of the corresponding parts of the human body. In addition, the parts 7, 8, 9, 10 of the seat 2 can deviate relative to each other on the indicated springs 11, 12, 13, 14, allowing the parts of the human body to take the most convenient position. Parts 7 and 8 of the seat 2 of the first row are deflected relative to adjacent parts 9 and 10 of the seat 2 of the second row on the hinges 16 and 17. And parts 7 and 8 of the seat 2 are deflected relative to each other within the course of the spring 18. When changing the position of any parts of the human body interacting with the corresponding one of the parts 7, 8, 9, 10 of the seat 2, the specified part of the seat 2 will also change its position, while continuing to support part of the human body. At the same time, the rest of the parts 7, 8, 9, 10 of seat 2 will not change their position and will also support the parts of the human body that interact with them. Thus, the gluteal muscles, the thigh muscles and the muscles of the hip joint will remain in a relaxed state throughout the entire period of a person sitting on the chair.

In addition, a person can lean his back on the supporting surface of the lower part 5 and the upper part 6 of the back. At the same time, the lower part 5 of the back, turning on a hinge 4, by means of which the lower part 5 of the back is connected to the bracket 3, will constantly interact with the lower part of the back of a person. And the upper part 6 of the back, turning on a hinge 25, through which the upper part 6 of the back is connected to the lower part 5 of the back, will constantly interact with the upper part of the back of a person. In addition, the bracket 3 is deflected on the spring 15 under the influence of the weight of the human torso in the direction of movement of the human back, while the lower part 5 of the back and the upper part 6 of the back constantly interact respectively with the lower part of the back and the upper part of the back of the person, creating constant support for the corresponding parts of the back of a person. At the same time, long and short back muscles will not be in constant tension as when sitting on a regular chair.

To eliminate the mismatch in the movement of the lower part 5 of the backrest and the upper part 6 of the backrest, the chair can be equipped with an additional bracket 27, which, as mentioned above, is connected via a spring 28 to the support 1 and by means of a spring 29 to the upper part 6 of the backrest. In this case, due to the compression forces of the springs 28 and 29 connecting the additional bracket 27 with the upper part 6 of the back and the support, a more reliable fit of the upper part 6 of the back to the upper part of the human back is ensured.

Leaning the upper back on the upper part 6 of the back, the person also rests his neck on the neckpiece 26, which can be made in the form of a protrusion on the upper section of the upper part 6 of the back. In this case, the muscles of the neck of a person will not be tense. The collar 26 can be made of elastic material or, as shown in Fig. 7, can be connected to the upper part 6 of the backrest via a spring 35, which allows the collar 26 to be in constant interaction with the neck of the person.

As indicated above, the support 1 can be made in the form of a frame 34 located on the stand 19, on which a platform 20 is installed, which consists of a lower part 21 and an upper part 22. In this case, the seat 2 is connected to the upper part 22 of the platform by means of springs 11, 12, 13 and 14. This embodiment of the support 1 allows a person sitting on a chair to rotate at the required angle around the axis of rotation of the upper part 22 of the platform.

A person can lean his feet on the footboard 24. At the same time, the muscles of the calves of the human legs will not be tensed. The footrest 24 can be made with the possibility of changing position relative to the support 1, which allows a person to most conveniently position his legs when sitting.

In addition, a person can make the necessary movements on the chair, pushing his feet off the floor. In this case, the chair will move on rollers 23 mounted on the lower part of the support 1.

While sitting on a chair, a person can place his hands on the armrests 30. At the same time, the armrests 30, squeezing the springs 33 and turning in hinges 32, will take a position in which the hands, wrists and elbows of a person will be located on the surface of the armrests 30. This allows a person Do not strain your arm muscles.

Thus, due to the fact that the back and seat are made of several moving parts, which are in constant interaction with parts of the body of a seated person, the chair becomes suitable for a long comfortable sitting.

Claims (14)

1. A chair comprising a support and a seat and a bracket movably connected to it, to which the lower back is connected via a hinge, while the upper back is pivotally connected to the lower back, and the seat is made of four parts arranged in two rows and connected to a support by means of springs, the bracket being connected to the support by means of a spring. 2. The chair according to claim 1, characterized in that the parts of the seat of one row are pivotally connected to adjacent parts of the seat of another row. 3. The chair according to claim 1, characterized in that the parts of the seat of at least one row are connected to each other by means of at least one spring. 4. The chair according to claim 1, characterized in that the support is made in the form of a frame located on a rack, on which a platform is installed, consisting of a lower part connected to the rack and an upper part to which the seat parts are connected by means of springs, while the upper part of the platform is connected to the lower part of the platform with the possibility of rotation around it. 5. The chair according to claim 4, characterized in that the upper part of the platform is connected to the lower part of the platform by means of a bearing. 6. The chair according to claim 4, characterized in that the rack is equipped with rollers for moving it. 7. The chair according to claim 4, characterized in that the rack is equipped with a footrest. 8. The chair according to claim 1, characterized in that the supporting surfaces of the parts of the seat closest to the bracket row are made with recesses in the shape of the buttocks of a person. 9. The chair according to claim 1, characterized in that the supporting surfaces of the parts of the seat of the row farthest from the bracket are made with recesses in the form of human hips. 10. The chair according to claim 1, characterized in that the supporting surface of the lower back is made concave in the shape of a human lower back. 11. The chair according to claim 1, characterized in that the supporting surface of the upper back is made concave in the shape of the upper back of a person. 12. The chair according to claim 1, characterized in that the supporting surface of the upper part of the back is equipped with a collar. 13. The chair according to claim 4, characterized in that the armrests are introduced in it, the ends of which are pivotally connected to the ends of the brackets, and the opposite ends of the indicated brackets are connected to the frame, while the armrests are additionally connected to the brackets by means of springs. 14. The chair according to claim 1, characterized in that it introduces an additional bracket connected by means of springs with a support and with the upper back.

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