Seat structure

Abstract

The invention relates to the field of office chairs, and particularly discloses a seat structure which comprises a backrest, a seat plate, a headrest and armrests, and is characterized in that a limiting frame is rotationally connected to the armrests and comprises a transverse part, and the transverse part is higher than the upper surface of the seat plate when the limiting frame rotates to be horizontal; at the moment, the height of the upper surface of the seat plate and the transverse part is smaller than the thickness of the two thighs, and the limiting frame is rotationally connected with the handrail through a damping shaft to keep the transverse part horizontal. By the adoption of the technical scheme, after a user sits on the seat plate, the limiting frame is rotated, and when the limiting frame is horizontal, the height of the transverse part is smaller than the height of two thighs, so that when the user wants to cross legs, due to the effect of the limiting frame, the behavior can be limited, and the sitting posture can be improved.

Description

Technical Field

[0001] The present application relates to the field of office chairs, and in particular to a seat structure. Background Art

[0002] Existing office chairs have many advantages. First, they are comfortable. Office chairs are usually designed in accordance with ergonomics, which can provide good support for users and reduce physical stress. The curvature of the chair back can fit the curve of the human back, give sufficient support to the waist, and reduce the back pain caused by sitting for a long time. The height and angle of the chair are adjustable to meet the needs of people of different heights and usage needs, allowing people to maintain a comfortable posture while working. Secondly, they are highly functional. Many office chairs are equipped with armrests to relieve arm fatigue and make it convenient for people to place their arms while working. Some office chairs also have wheels for easy mobility, which makes it convenient for people to move freely in the office and improve work efficiency. Some high-end office chairs may also have functions such as massage and heating to bring more comfortable experience to users.

[0003] Crossing your legs is an action that many people do unconsciously, but it has many dangers.

[0004] First, it has a great impact on the health of the spine. When crossing one's legs, the body tends to bend and hunch, causing uneven force on the spine. Doing so for a long time will lead to scoliosis, back pain, and may even compress nerves, causing numbness and pain in the lower limbs. Especially for adolescents who are in the growth and development stage, they should avoid crossing their legs to avoid affecting the normal development of the spine.

[0005] Secondly, it is not conducive to blood circulation in the legs. One leg pressing on the other leg will hinder blood flow in the legs and easily cause varicose veins in the lower limbs. In the early stage, only blue veins may appear in the legs. As the disease worsens, the legs will swell and hurt, seriously affecting the quality of life. In addition, poor blood circulation may also cause leg muscle atrophy and weaken leg strength.

[0006] Furthermore, it is also harmful to the joints. Crossing your legs will increase the pressure on the internal structure of the knee joint, causing more wear and tear on the joint cartilage, which can easily lead to knee arthritis over time. At the same time, the hip joint will also be adversely affected, and you may experience hip pain, limited mobility and other problems.

[0007] In addition, crossing your legs may also affect the health of the reproductive system. For men, it will increase the local temperature, which is not conducive to the production and survival of sperm. For women, it may increase the risk of gynecological diseases. In short, for the sake of health, we should try to avoid this bad habit of crossing our legs.

[0008] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects: currently there is no chair that can improve the above-mentioned bad habits. Summary of the invention

[0009] In order to improve the problem of sitting posture, the present application provides a seat structure.

[0010] The present application provides a seat structure that adopts the following technical solution:

[0011] A chair structure comprises a backrest and a seat plate, a headrest and an armrest, characterized in that: the armrest is rotatably connected to a limiting frame, the limiting frame comprises a transverse portion, the transverse portion is higher than the upper surface of the seat plate when the limiting frame is rotated to be horizontal, and at this time the height between the upper surface of the seat plate and the transverse portion is less than the thickness of two thighs, the limiting frame is rotatably connected to the armrest via a damping shaft to keep the transverse portion horizontal.

[0012] By adopting the above technical solution, after the user sits on the seat plate, by rotating the limiting frame, when the limiting frame is horizontal, the height of the lateral part is less than the height of the two thighs. In this way, when the user wants to cross his legs, the limiting frame can limit this behavior, which is conducive to improving the sitting posture.

[0013] Optionally, the armrest includes a vertical rod and a horizontal rod, the vertical rod is a lifting rod, and the limiting frame is hinged and rotatably connected to a lifting and lowering portion of the vertical rod.

[0014] By adopting the above technical solution, since the thickness of thighs of different people is different, it is best to set the limit frame to be height-adjustable, and the above purpose can be achieved by setting the vertical rod of the armrest as a lifting rod.

[0015] Optionally, the vertical rod includes a connecting rod fixed to the seat plate, a sleeve rod that is sleeved on the connecting rod and can be relatively connected and lifted, a control arm installed on the sleeve rod through a rotating shaft, and a torsion spring installed on the rotating shaft and connected to the control arm, the connecting rod has a plurality of slots distributed along the height direction, and the control arm has a card block that is inserted into the slot.

[0016] By adopting the above technical solution, the card block is disengaged from the card slot by rotating the control lever to unlock the sleeve rod. At this time, the sleeve rod can move up and down relative to the connecting rod to achieve height adjustment. Then, the control lever is released, and the control lever is reset through the torsion spring to allow the card block to be re-engaged in the card slot.

[0017] Optionally, the limiting frame also includes a longitudinal part, two longitudinal parts are provided and are respectively located on the outside of the two armrests, and the transverse part includes a long plate body and a short plate body, one end of the short plate body is rotatably connected to one of the longitudinal parts, and the other end is rotatably connected to one end of the long plate body, and the end of the long plate body away from the short plate body is clamped with the other longitudinal part.

[0018] By adopting the above technical solution, since the transverse part will interfere with the thighs when the limiting frame rotates after the user sits on the seat plate, the transverse part is divided into a long plate body and a short body.

[0019] Optionally, a connecting groove is provided on the longitudinal part connected to the long board body, and the long board body has a connecting block inserted into the connecting groove, and the connecting block is magnetically attracted to the connecting groove.

[0020] By adopting the above technical solution, the connection between the connecting block and the connecting groove is more reliable and is not easy to be disengaged during use.

[0021] Optionally, the lower surface of the lateral portion has an interference protrusion.

[0022] By adopting the above technical solution, the lower surface here refers to the lower surface of the interference protrusion located at the horizontal part when the limiting frame is rotated to the horizontal state. When crossing one's legs, the raised thigh will touch the interference protrusion, which serves as a reminder.

[0023] Optionally, the interfering protrusion is a hard protrusion structure.

[0024] By adopting the above technical solution, the hard protrusion structure makes the touch more obvious.

[0025] Optionally, the interfering protrusion is an elastic structure.

[0026] By adopting the above technical solution, the elastic structure can be used when children use it, which is safer.

[0027] Optionally, a limiting block is fixed on the armrest, and the limiting block allows the limiting frame to rotate only to a horizontal position.

[0028] By adopting the above technical solution, since the damping shaft can still rotate when subjected to a certain force, the limiting block can prevent the limiting frame from flipping upwards.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: the present invention provides a restriction frame and an interference protrusion on the restriction frame, thereby effectively improving the user's sitting posture through a combination of reminder and restriction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application without the restriction frame;

[0031] Figure 2 is a schematic diagram of the side structure of an embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the overall structure of the restriction frame of an embodiment of the present application;

[0033] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0034] Figure 5 It is a type of installation that interferes with the protrusion;

[0035] Figure 6 It is another installation method that interferes with the protrusion.

[0036] Figure numerals: 1. backrest; 2. seat plate; 3. headrest; 4. armrest; 5. vertical rod; 6. horizontal rod; 7. connecting rod; 8. sleeve rod; 9. control arm; 10. horizontal part; 11. longitudinal part; 12. long plate body; 13. short plate body; 14. damping shaft; 15. connecting hole; 16. connecting block; 17. connecting groove; 18. upper connecting part; 19. lower connecting part; 20. first rotating axis; 21. second rotating axis; 22. limiting block; 23. interference protrusion; 24. limiting frame; 25. mounting plate. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiment of the present application discloses a seat structure, including a backrest 1 and a seat plate 2, a headrest 3 and an armrest 4, wherein a limiting frame 24 is rotatably connected to the armrest 4.

[0039] The armrest 4 includes a vertical rod 5 and a horizontal rod 6. The vertical rod 5 is a lifting rod. The vertical rod 5 includes a connecting rod 7 fixed to the seat plate 2, a sleeve rod 8 sleeved on the connecting rod 7 and capable of being relatively connected and lifted, a control arm 9 installed on the sleeve rod 8 through a rotating shaft, and a torsion spring installed on the rotating shaft to connect the control arm 9. The connecting rod 7 has a plurality of slots distributed along the height direction, and the control arm 9 has a block that is inserted into the slot. The vertical rod 5 can also directly use a gas spring.

[0040] The limiting frame 24 includes a transverse portion 10 and a longitudinal portion 11. Two longitudinal portions 11 are provided and are respectively located outside the two armrests 4. When the limiting frame 24 is rotated to a horizontal position, the transverse portion 10 is higher than the upper surface of the seat plate 2, and at this time, the height between the upper surface of the seat plate 2 and the transverse portion 10 is less than the thickness of the two thighs. The limiting frame 24 is rotatably connected to the armrests 4 through the damping shaft 14 to keep the transverse portion 10 horizontal. Specifically, the transverse portion 10 includes a long plate body 12 and a short plate body 13. One end of the short plate body 13 is rotatably connected to one of the longitudinal portions 11, and the other end is rotatably connected to one end of the long plate body 12. The end of the long plate body 12 away from the short plate body 13 is clamped with the other longitudinal portion 11. The longitudinal portion 11 is provided with a connecting hole 15, and the damping shaft 14 is inserted into the connecting hole 15. A connecting groove 17 is provided on the longitudinal part 11 connected to the long plate body 12. The long plate body 12 has a connecting block 16 inserted into the connecting groove 17. The connecting block 16 and the connecting groove 17 are magnetically attracted. For example, the connecting block 16 can be a hollow iron block, and a magnet is fixedly bonded in the connecting groove 17. More specifically, the short plate body 13 includes an upper connecting part 18 and a lower connecting part 19. A first rotating shaft 20 is fixed on one of the longitudinal parts 11. Circular holes are provided at both ends of the upper connecting part 18 and the lower connecting part 19. The first rotating shaft 20 passes through a circular hole of the upper connecting part 18 and a circular hole of the lower connecting part 19 at the same time. The first rotating shaft 20 can rotate relative to the upper connecting part 18 and the lower connecting part 19. A mounting block is fixed on one end of the long plate body 12 away from the connecting block 16, and a second rotating shaft 21 is fixed on the mounting block. The second rotating shaft 21 is inserted into another circular hole of the upper connecting part 18 and another circular hole of the lower connecting part 19 and rotates with the circular holes.

[0041] A limiting block 22 is fixed on the handrail 4, and the limiting block 22 allows the limiting frame 24 to rotate only to a horizontal state. Specifically, the limiting block 22 is fixed on the sleeve rod 8, and when the limiting block 22 rotates to a horizontal state, the upper surface of the longitudinal portion 11 abuts against the lower surface of the limiting block 22.

[0042] The lower surface of the transverse portion 10 has an interference protrusion 23. Specifically, the interference protrusion 23 is set on the lower surface of the long board body 12. The interference protrusion 23 can be an elastic rubber material, and in this embodiment, it is preferably a hard protrusion structure, such as formed by hard plastic processing. One form of the interference protrusion 23 is an elastic structure, such as elastic rubber. The interference protrusion 23 can be set on a mounting plate 25, and the mounting plate 25 can be connected to the long board body 12 by magnetism or Velcro.

[0043] The implementation principle of the seat structure of the embodiment of the present application is as follows: before use, the long board 12 and the longitudinal portion 11 on one side are attached and in a vertical state. When in use, the user sits on the seat plate 2, then rotates the two longitudinal portions 11 to a horizontal position, and then rotates the transverse portion 10 so that the connecting block 16 of the long board 12 is inserted into the connecting groove 17.

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A seat structure, comprising a backrest and a seat plate, a headrest and an armrest, characterized in that: The armrest is rotatably connected to a limiting frame, which includes a transverse portion. The transverse portion is higher than the upper surface of the seat plate when the limiting frame is rotated to be horizontal, and at this time, the height between the upper surface of the seat plate and the transverse portion is less than the thickness of two thighs. The limiting frame is rotatably connected to the armrest through a damping shaft to keep the transverse portion horizontal.

2. A seat structure according to claim 1, characterized in that: The handrail comprises a vertical rod and a horizontal rod, wherein the vertical rod is a lifting rod, and the limiting frame is hingedly rotatably connected to a lifting and lowering portion of the vertical rod.

3. A seat structure according to claim 2, characterized in that: The vertical rod includes a connecting rod fixed to the seat plate, a sleeve rod sleeved on the connecting rod and capable of being relatively connected and lifted, a control arm installed on the sleeve rod through a rotating shaft, and a torsion spring installed on the rotating shaft and connected to the control arm. The connecting rod has a plurality of slots distributed along the height direction, and the control arm has a card block that is inserted into the slot.

4. A seat structure according to claim 1, characterized in that: The limiting frame also includes a longitudinal part, two longitudinal parts are provided and are respectively located on the outside of the two armrests, and the transverse part includes a long plate body and a short plate body, one end of the short plate body is rotatably connected to one of the longitudinal parts, and the other end is rotatably connected to one end of the long plate body, and the end of the long plate body away from the short plate body is clamped with the other longitudinal part.

5. A seat structure according to claim 4, characterized in that: A connecting groove is provided on the longitudinal part connected with the long plate body, and the long plate body has a connecting block inserted into the connecting groove, and the connecting block is magnetically attracted to the connecting groove.

6. A seat structure according to claim 1, characterized in that: The lower surface of the lateral portion has an interference protrusion.

7. A seat structure according to claim 6, characterized in that: The interfering protrusion is a hard protrusion structure.

8. A seat structure according to claim 6, characterized in that: The interfering protrusion is an elastic structure.

9. The seat structure according to claim 1, characterized in that: A limiting block is fixed on the handrail, and the limiting block allows the limiting frame to rotate only to a horizontal position.

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