Ergonomic chair

Abstract

The invention relates to the technical field of furniture, in particular to an ergonomic chair which comprises a seat plate, a supporting rod frame fixed to the bottom of the seat plate, a backrest frame and a backrest net, the backrest frame is hollow and installed on the rear side of the seat plate, a clamping mechanism is arranged on the backrest net, and the backrest net wraps the front side of the backrest frame. The backrest net is detachably clamped on the backrest frame through a clamping mechanism, and the radian shape of the backrest net is consistent with that of the backrest frame. The backrest net is clamped on the backrest frame through the clamping mechanism, the detachable effect is achieved, after long-term use, the backrest net can be conveniently detached for cleaning, the sanitation and cleanliness of the backrest net are improved, the detaching and installing process is convenient and fast enough, the adjusting screw rod is screwed and adjusted by holding the twisting handle, and the practicability is high. The sliding plate can be driven to ascend and descend along the limiting sleeve at the same time, then the waist cushion can be driven to be adjusted up and down, the waist cushion can be conveniently adjusted to the position aligned with the waists of users of different heights, the adaptability is good, and the universality is high.

Description

Technical Field

[0001] The invention relates to the technical field of furniture, in particular to an ergonomic chair. Background Art

[0002] An ergonomic chair is a chair designed to improve sitting comfort and health. It uses ergonomic principles and can be adjusted according to individual body characteristics to support the spine and reduce muscle and bone pressure. This type of chair usually has adjustable seat height, backrest inclination, armrest height and width, and some are also designed with lumbar pads and headrests to provide additional support. Ergonomic chairs are widely used in offices, homes, and medical institutions to reduce the adverse effects of long-term sitting for work or study, such as cervical pain, back pain, and other problems, thereby improving work efficiency and quality of life.

[0003] The backrest of a traditional ergonomic chair has an integrated cushion with poor air permeability. If the back is pressed against the backrest for a long time, especially in high temperatures such as summer, it is easy to cause sweat stains on the back, which is poor in comfort. Some ergonomic chairs in the prior art have a mesh backrest with good air permeability, which can effectively alleviate the above situation. In summer, sweat stains on the back are easily stained on the mesh backrest. However, the traditional mesh backrest is an integrated design with the chair, and the mesh backrest cannot be disassembled for cleaning. The hygiene level is poor after long-term use, and it is also easy to have odor. Summary of the invention

[0004] The object of the present invention is to provide an ergonomic chair with a backrest net that is easy to disassemble and clean, so as to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions.

[0006] An ergonomic chair comprises a seat plate, a support rod frame fixed to the bottom of the seat plate, a backrest frame and a backrest net. The backrest frame is hollow and installed on the rear side of the seat plate. A clamping mechanism is provided on the backrest net. The backrest net is covered on the front side of the backrest frame. The backrest net is detachably clamped on the backrest frame through the clamping mechanism. The curvature of the backrest net is consistent with that of the backrest frame.

[0007] The backrest net is mounted on the backrest frame by a snap-on mechanism, which makes it detachable. After long-term use, the backrest net can be easily removed for cleaning, thereby improving the hygiene and cleanliness of the backrest net.

[0008] Preferably, the clamping mechanism includes a second clamping strip and a pair of first clamping strips, first clamping strips having an arc shape consistent with that of the backrest frame are fixed on both sides of the backrest net, the second clamping strip is fixedly connected to the top of the backrest net, first clamping columns are evenly distributed on both sides of the backrest frame, second clamping columns are evenly distributed on the top of the backrest frame, first clamping holes for corresponding insertion of the first clamping columns are evenly distributed on the first clamping strip, second clamping holes for corresponding insertion of the second clamping columns are evenly distributed on the second clamping strip, the first clamping strips are inserted into the first clamping holes one by one through the first clamping columns and are clamped on the side of the backrest frame, and the second clamping strips are inserted into the second clamping holes one by one through the second clamping columns and are clamped on the top of the backrest frame.

[0009] Preferably, the clamping mechanism also includes fastening devices arranged at both ends of the second clamping strip, the two fastening devices are used to lock the corresponding first clamping strip with the end of the second clamping strip, the fastening device includes a fastening block, a fastening screw and a fastening nut, the fastening block is fixed on the top of the first clamping strip, the fastening block is provided with a through insertion hole, the fastening screw is fixed to the side of the second clamping strip and can be matched and inserted in the insertion hole, the fastening nut thread is matched and screwed on the fastening screw, and cooperates with the lower part of the side of the fastening block.

[0010] The two first clamping strips are respectively mounted on both sides of the backrest frame, and the first clamping column is ensured to be inserted into the first clamping hole accordingly; the second clamping strip is mounted on the top of the backrest frame, and the second clamping column is ensured to be inserted into the second clamping hole accordingly; then the top of the first clamping strip and the side end of the second clamping strip are locked by using a fastening device, so as to prevent the first clamping strip and the second clamping strip from falling off the backrest frame, thereby ensuring the firmness of the backrest net during installation, and also ensuring a good force-bearing effect of the backrest net.

[0011] Preferably, a cavity is provided at the rear side of the bottom of the support rod frame, a shaft is rotatably installed in the cavity, a roller body is fixedly sleeved on the shaft rod, and a part of the roller body is exposed to the outside of the cavity.

[0012] By arranging rollers on the support rod frame, when moving the chair over a long distance, the chair can be tilted backward until the rollers touch the ground and then dragged. The rolling effect of the rollers in the cavity can be used to reduce the friction between the rollers and the ground, ensuring that the dragging process is easier and more labor-saving, while also avoiding abnormal noise and noise pollution.

[0013] Preferably, limit sleeves are fixed on both sides of the back of the backrest frame and near its bottom, and sliding plates that can slide up and down are installed on the two limit sleeves. A lumbar pad is installed on the sliding plate, and the lumbar pad support is attached to the rear side of the backrest net. An adjustment mechanism is provided on the rear side of the seat plate, and the adjustment mechanism is used to drive the sliding plate to perform lifting and lowering adjustment.

[0014] Preferably, the adjustment mechanism includes a bracket and an adjusting screw. The bracket is fixed to the rear side of the seat plate. The bracket is provided with a vertically through-threaded hole. The through-thread of the adjusting screw is matched and installed in the threaded hole. The top end of the adjusting screw is rotatably connected to the bottom of the sliding plate, and a twist handle is installed at the bottom end of the adjusting screw.

[0015] By holding the twist handle and turning the adjusting screw, the sliding plate can be driven to rise and fall simultaneously along the limiting sleeve, and then the waist pad can be driven to be adjusted up and down, so that the waist pad can be adjusted to a position aligned with the waists of users of different heights, with good adaptability and high versatility.

[0016] Preferably, connecting frames are fixed on both sides of the back of the backrest frame and close to the top thereof, and a handle bar is fixed between the two connecting frames.

[0017] Preferably, armrests are installed on both sides of the seat plate, and the supporting surfaces of the two armrests are covered with soft cushions.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0019] The present invention utilizes a clamping mechanism to mount the backrest net on the backrest frame, which has a detachable effect. After long-term use, the backrest net can be easily removed for cleaning, thereby improving the hygiene and cleanliness of the backrest net, and the disassembly and assembly process is convenient and quick enough.

[0020] The present invention clamps the two first clamping strips on the two sides of the backrest frame respectively, and ensures that the first clamping column is correspondingly inserted into the first clamping hole, clamps the second clamping strip on the top of the backrest frame, and ensures that the second clamping column is correspondingly inserted into the second clamping hole, and then uses a fastening device to lock the top of the first clamping strip and the side end of the second clamping strip, which can prevent the first clamping strip and the second clamping strip from falling off the backrest frame, ensure the firmness of the backrest net during installation, and also ensure that the force effect of the backrest net is good.

[0021] The present invention arranges rollers on the support rod frame. When moving the chair over a long distance, the chair is tilted backward until the rollers come into contact with the ground and then dragged. The rollers can roll in the cavity to reduce friction with the ground, thereby ensuring that the dragging process is easier and more labor-saving, while also avoiding abnormal noise and noise pollution.

[0022] The present invention can drive the sliding plate to rise and fall simultaneously along the limiting sleeve by holding the twist handle to screw the adjusting screw, thereby driving the waist pad to be adjusted up and down, so that the waist pad can be adjusted to a position aligned with the waists of users of different heights, with good adaptability and high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is one of the three-dimensional schematic diagrams of the overall structure of the present invention;

[0024] Figure 2 This is the second three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the installation of the roller structure in the present invention;

[0026] Figure 4 It is a schematic diagram of the back structure of the backrest frame in the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 6 It is a schematic cross-sectional view of a local structure in the present invention;

[0029] Figure 7 It is a schematic diagram of the local structure of the backrest frame in the present invention.

[0030] In the figure: 1. seat plate; 11. armrest; 111. cushion; 12. support rod frame; 121. cavity; 122. shaft rod; 123. roller body; 2. backrest frame; 201. connecting frame; 202. grip rod; 21. first clamping column; 22. second clamping column; 3. backrest net; 4. clamping mechanism; 41. first clamping strip; 411. first clamping hole; 42. second clamping strip; 421. second clamping hole; 43. fastening device; 431. fastening block; 4311. insertion hole; 432. fastening screw; 433. fastening nut; 5. lumbar pad; 501. support arm; 51. limit sleeve; 52. sliding plate; 6. adjustment mechanism; 61. bracket; 611. threaded hole; 62. adjusting screw; 63. twist handle. DETAILED DESCRIPTION

[0031] See also Figure 1-Figure 7 The present invention provides an ergonomic chair. The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0033] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0034] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0036] The ergonomic process chair comprises a seat plate 1, a support rod frame 12 fixed to the bottom of the seat plate 1, a backrest frame 2 and a backrest net 3. The support rod frame 12 has a circular cross-section and can provide a stable support for the seat plate 1 as a whole, thereby ensuring the stability of the user when sitting down. The backrest frame 2 is hollow and is installed on the rear side of the seat plate 1. The backrest net 3 is wrapped around the front side of the backrest frame 2. The curvature of the backrest net 3 is consistent with the curvature of the backrest frame 2. The backrest net 3 is combined with the backrest frame 2 to provide effective support for the user's back, waist and neck, and the overall shape is suitable for the user's body ergonomics, with a high degree of comfort. The backrest net 3 is in direct contact with the user's back, concave part and neck, and has good air permeability, further improving the user's comfort.

[0037] In addition, a snap-in mechanism 4 is provided on the backrest net 3, and the backrest net 3 is detachably mounted on the backrest frame 2 through the snap-in mechanism 4. The backrest net 3 is snap-in mounted on the backrest frame 2 by means of the snap-in mechanism 4, and has a detachable effect. Therefore, after long-term use, the backrest net 3 can be easily removed for cleaning, thereby improving the hygiene and cleanliness of the backrest net 3.

[0038] Specifically, the clamping mechanism 4 includes a second clamping strip 42, a pair of first clamping strips 41 and a fastening device 43. The first clamping strips 41 with a curvature consistent with the backrest frame 2 are fixed on both sides of the backrest net 3, the second clamping strips 42 are fixedly connected to the top of the backrest net 3, the first clamping columns 21 are evenly distributed on both sides of the backrest frame 2, and the second clamping columns 22 are evenly distributed on the top of the backrest frame 2. The first clamping strips 41 are evenly distributed with first clamping holes 411 for the first clamping columns 21 to be inserted into, and the second clamping strips 42 are evenly distributed with second clamping holes 421 for the second clamping columns 22 to be inserted into. The first clamping strips 41 are inserted into the first clamping holes 411 through the first clamping columns 21 one by one and are clamped on the side of the backrest frame 2. The second clamping strips 42 are inserted into the second clamping holes 421 through the second clamping columns 22 one by one and are clamped on the top of the backrest frame 2. The two fastening devices 43 are used to lock the corresponding ends of the first clamping strips 41 and the second clamping strips 42.

[0039] The two first clamping strips 41 are respectively clamped on both sides of the backrest frame 2, and the first clamping column 21 is inserted into the first clamping hole 411 accordingly; the second clamping strip 42 is clamped on the top of the backrest frame 2, and the second clamping column 22 is inserted into the second clamping hole 421 accordingly; then the top of the first clamping strip 41 and the side end of the second clamping strip 42 are locked by the fastening device 43, so as to prevent the first clamping strip 41 and the second clamping strip 42 from falling off the backrest frame 2, thereby ensuring the firmness of the backrest net 3 during installation, and also ensuring that the force effect of the backrest net 3 is good.

[0040] The fastening device 43 includes a fastening block 431, a fastening screw 432 and a fastening nut 433. The fastening block 431 is fixed to the top of the first clamping strip 41. The fastening block 431 is provided with a through insertion hole 4311. The fastening screw 432 is fixed to the side of the second clamping strip 42 and can be inserted into the insertion hole 4311. The fastening nut 433 is threadedly screwed on the fastening screw 432 and cooperates with the lower part of the side of the fastening block 431. When the first clamping strip 41 and the second clamping strip 42 are connected, the fastening nut 433 is screwed on the fastening screw 432 and cooperates with the lower part of the side of the fastening block 431. When the second clamping strip 42 is clamped on the backrest frame 2, the fastening screw 432 is aligned and passed through the insertion hole 4311, and then the fastening nut 433 is tightened on the fastening screw 432. The fastening nut 433 and the side of the fastening block 431 are used to lock the ends of the first clamping strip 41 and the second clamping strip 42, which has an effective anti-slip effect. When disassembling, you only need to remove the fastening nut 433 from the fastening screw 432, and the disassembly process is convenient and quick.

[0041] In addition, when installing the backrest net 3, firstly, the second clamping strip 42 needs to be clamped on the top of the backrest frame 2, and then the first clamping strips 41 on both sides are clamped respectively. When clamping the first clamping strip 41, it should be noted that while the first clamping column 21 is aligned and inserted into the first clamping hole 411, it is necessary to ensure that the fastening screw 432 is aligned and inserted into the insertion hole 4311 to avoid the fastening screw 432 from blocking and interfering with the clamping of the first clamping strip 41.

[0042] Since the conventional chair with the support rod frame 12 at the bottom lacks a pulley, it is not conducive to long-distance movement, and the position can only be adjusted by pulling or pulling. In order to save effort, most of the positions are moved by pulling. When pulling, the support rod frame 12 has a large friction with the ground, which is relatively laborious and easy to make abnormal noises. In order to solve this problem, the present invention has made the following improvements:

[0043] like Figure 2 and Figure 3 As shown, a cavity 121 is provided on the rear side of the bottom of the support rod frame 12, and a shaft 122 is rotatably installed in the cavity 121. A roller body 123 is fixedly mounted on the shaft 122, and a portion of the roller body 123 is exposed to the outside of the cavity 121. When moving the chair over a long distance, the chair can be tilted backward until the roller body 123 contacts the ground and then dragged. The roller body 123 can roll in the cavity 121 to reduce friction with the ground, thereby ensuring that the dragging process is easier and more labor-saving, while also avoiding abnormal noise and noise pollution.

[0044] Specifically, limit sleeves 51 are fixed on both sides of the back of the backrest frame 2 and near its bottom, and sliding plates 52 that can slide up and down are installed on the two limit sleeves 51. The sliding plates 52 are installed with lumbar pads 5, which support and fit the rear side of the backrest net 3. An adjustment mechanism 6 is provided on the rear side of the seat plate 1, and the adjustment mechanism 6 is used to drive the sliding plate 52 to be raised and lowered.

[0045] In addition, a plurality of support arms 501 are evenly distributed on the back of the lumbar pad 5, and each support arm 501 is fixedly connected to the sliding plate 52. The support arms 501 can enhance the support effect between the sliding plate 52 and the lumbar pad 5, thereby ensuring that the lumbar pad 5 has a certain pressure resistance and can withstand the pressure on the user's back and waist.

[0046] The adjustment mechanism 6 includes a bracket 61 and an adjusting screw 62. The bracket 61 is fixed to the rear side of the seat plate 1. A vertically penetrating threaded hole 611 is provided on the bracket 61. The adjusting screw 62 is installed in the threaded hole 611 with a penetrating thread matching. The top end of the adjusting screw 62 is rotatably connected to the bottom of the sliding plate 52, and a twist handle 63 is installed at the bottom end of the adjusting screw 62.

[0047] By holding the twist handle 63 and rotating the adjusting screw 62, the sliding plate 52 can be driven to rise and fall simultaneously along the limiting sleeve 51, and then the waist pad 5 can be driven to be adjusted up and down, so that the waist pad 5 can be adjusted to a position aligned with the waists of users of different heights, with good adaptability and high versatility.

[0048] Specifically, connecting frames 201 are fixed on both sides of the back of the backrest frame 2 and near its top, and a handle bar 202 is fixed between the two connecting frames 201. By holding the handle bar 202, the chair can be tilted as a whole and dragged over a long distance.

[0049] Specifically, armrests 11 are respectively installed on both sides of the seat plate 1 to provide effective support for the user's hands. The supporting surfaces of the two armrests 11 are covered with soft cushions 111 with a soft texture, which further improves the comfort of the user.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An ergonomic chair, comprising a seat plate (1) and a support rod frame (12) fixed to the bottom of the seat plate (1), characterized in that: It also includes a backrest frame (2) and a backrest net (3); The backrest frame (2) is hollow, and the backrest frame (2) is installed on the rear side of the seat plate (1); The backrest net (3) is provided with a clamping mechanism (4), the backrest net (3) covers the front side of the backrest frame (2), and the backrest net (3) is detachably clamped on the backrest frame (2) through the clamping mechanism (4); The curvature of the backrest net (3) is consistent with the curvature of the backrest frame (2).

2. The ergonomic chair according to claim 1, characterized in that: The clamping mechanism (4) comprises a second clamping strip (42) and a pair of first clamping strips (41); The first clamping strips (41) having a curvature consistent with that of the backrest frame (2) are respectively fixed on both sides of the backrest net (3), and the second clamping strips (42) are fixedly connected to the top of the backrest net (3); First clamping columns (21) are evenly distributed on both sides of the backrest frame (2), second clamping columns (22) are evenly distributed on the top of the backrest frame (2), first clamping holes (411) for corresponding insertion of the first clamping columns (21) are evenly distributed on the first clamping strip (41), and second clamping holes (421) for corresponding insertion of the second clamping columns (22) are evenly distributed on the second clamping strip (42); The first clamping strips (41) are inserted into the first clamping holes (411) in a one-to-one correspondence through the first clamping columns (21) and are clamped on the side of the backrest frame (2); the second clamping strips (42) are inserted into the second clamping holes (421) in a one-to-one correspondence through the second clamping columns (22) and are clamped on the top of the backrest frame (2).

3. The ergonomic chair according to claim 2, characterized in that: The clamping mechanism (4) further comprises fastening devices (43) arranged at both ends of the second clamping strip (42), and the two fastening devices (43) are used to lock the corresponding ends of the first clamping strip (41) and the second clamping strip (42); The fastening device (43) comprises a fastening block (431), a fastening screw (432) and a fastening nut (433); The fastening block (431) is fixed on the top of the first clamping strip (41), and a through insertion hole (4311) is provided on the fastening block (431); The fastening screw (432) is fixed to the side of the second clamping strip (42) and can be matched and inserted into the insertion hole (4311); The fastening nut (433) is threadedly matched and screwed onto the fastening screw (432), and cooperates with the lower part of the side of the fastening block (431).

4. The ergonomic chair according to claim 1, characterized in that: A cavity (121) is provided at the rear side of the bottom of the support rod frame (12), and a shaft (122) is rotatably installed in the cavity (121); A roller body (123) is fixedly mounted on the shaft rod (122), and a portion of the roller body (123) is exposed to the outside of the cavity (121).

5. The ergonomic chair according to claim 1, characterized in that: Limiting sleeves (51) are respectively fixed on both sides of the back of the backrest frame (2) and near the bottom thereof, and sliding plates (52) capable of sliding upward and downward limiting positions are installed on the two limiting sleeves (51); A waist pad (5) is installed on the sliding plate (52), and the waist pad (5) is supported and attached to the rear side of the backrest net (3); An adjustment mechanism (6) is provided on the rear side of the seat plate (1), and the adjustment mechanism (6) is used to drive the sliding plate (52) to perform lifting and lowering adjustment.

6. The ergonomic chair according to claim 5, characterized in that: The adjusting mechanism (6) comprises a bracket (61) and an adjusting screw (62); The bracket (61) is fixed to the rear side of the seat plate (1), and a vertically penetrating threaded hole (611) is provided on the bracket (61); The adjusting screw (62) is threadedly mounted in the threaded hole (611), and the top of the adjusting screw (62) is rotatably connected to the bottom of the sliding plate (52); A twist handle (63) is installed at the bottom end of the adjusting screw rod (62).

7. The ergonomic chair according to claim 1, characterized in that: Connecting frames (201) are respectively fixed on both sides of the back of the backrest frame (2) and close to the top thereof, and a handle bar (202) is fixed between the two connecting frames (201).

8. The ergonomic chair according to claim 1, characterized in that: Armrests (11) are respectively installed on both sides of the seat plate (1), and the supporting surfaces of the two armrests (11) are covered with soft cushions (111).

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