An adjustable office chair that helps relieve fatigue

Abstract

The present invention discloses an adjustable office chair that is conducive to relieving fatigue, comprising a U-shaped frame and a second slider, the bottom of the U-shaped frame is fixedly connected to a limit plate by a connecting bolt, one side of the baffle is fixedly connected to a support rod, one end of the support rod is provided with a protective sleeve, the second slider is fixedly connected to one side of the back plate, the second slider is slidably connected in a second slide rail, the second slide rail is fixedly connected in a groove, and the groove is provided on the upper inner side of the U-shaped frame. The adjustable office chair that is conducive to relieving fatigue is provided with a rotating threaded rod, so that the internal threaded barrel can move up and down in the first through groove, and in the process of the internal threaded barrel moving up and down, the connecting plate moves following the internal threaded barrel moving up and down through the action of the first slider and the first slide rail, thereby adjusting the position of the massage device, so that the massage device can be more accurately moved to the position where massage is required, thereby improving the effect of relieving fatigue.

Description

Technical Field

[0001] The invention relates to the technical field of office work, in particular to an adjustable office chair that is beneficial to relieving fatigue. Background Art

[0002] Office chairs refer to various chairs that are used for convenience in daily work and social activities. Office partners divide office chairs into narrow and broad definitions. The narrow definition of office chairs refers to the backrest chairs that people sit on when they work on their desks. The broad definition of office chairs refers to all chairs used in offices, including executive chairs, mid-shift chairs, reception chairs, staff chairs, conference chairs, visitor chairs, training chairs, etc.

[0003] However, current office chairs cannot be adjusted according to people's needs, resulting in poor fatigue relief effects. In addition, office chairs generally use the characteristics of their own materials to reduce the impact force when office workers lean back, resulting in the back panel of the office chair being more likely to break after a period of use. In addition, after purchasing an office chair online, the seller usually sends the components of the office chair, which are not easy to assemble and connect. Summary of the invention

[0004] The purpose of the present invention is to provide an adjustable office chair that is conducive to relieving fatigue, so as to solve the problem raised by the above background technology that the office chairs currently on the market cannot be adjusted according to people's needs, resulting in poor fatigue relief effect, and the office chair generally uses the characteristics of its own material to reduce the impact force when the office worker leans back, resulting in the back panel of the office chair being more likely to break after a period of use, and generally after the office chair is purchased online, the seller usually sends the components of the office chair, and these components are not easy to assemble and connect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable office chair that is conducive to relieving fatigue, comprising a U-shaped frame and a second sliding block, the bottom of the U-shaped frame is fixedly connected to a limit plate by a connecting bolt, one side of the limit plate is fixedly connected to a sleeve, the inner bottom surface of the sleeve is fixedly connected to a spring, one end of the spring is fixedly connected to a baffle, one side of the baffle is fixedly connected to a limit block, the limit block is slidably connected in a limit groove, the limit groove is provided on the inner side wall of the sleeve, and one side of the baffle is fixedly connected to a support rod;

[0006] A protective sleeve is provided at one end of the support rod, a back plate is fixedly connected to the protective sleeve, a first through slot is provided on the back plate, an internal threaded tube is snap-connected in the first through slot, a threaded rod is connected to the internal thread of the internal threaded tube, a connecting plate is fixedly connected to one side of the internal threaded tube, a first slider is fixedly connected to one side of the connecting plate, the first slider is slidably connected to the first slide rail, the first slide rail is fixedly connected to the inner side wall of the second through slot, the second through slot is provided above the first through slot, a massage device is fixedly connected to one side of the connecting plate, a rotating shaft is fixedly connected to one side of the bottom of the back plate, and the rotating shaft The first bearing is sleeved in the first bearing, and a first threaded hole is provided on the rotating shaft, and a first locking bolt is threadedly connected in the first threaded hole. The first bearing is embedded in the seat plate, and a docking plate is fixedly connected to one side of the seat plate, and the docking plate is snap-connected in the clamping pad, and the clamping pad is fixedly connected in the docking groove. A second threaded hole is provided on the docking plate, and a second locking bolt is threadedly connected in the second threaded hole. The second slider is fixedly connected to one side of the back plate, and the second slider is slidably connected in the second slide rail, and the second slide rail is fixedly connected in the groove, and the groove is provided on the inner side above the U-shaped frame.

[0007] Preferably, the U-shaped frame, connecting bolts, second sliders, second slide rails and grooves are symmetrically arranged in two groups, and the two groups of grooves are obliquely opened on the upper inner side of the U-shaped frame, and the two groups of second sliders, second slide rails and grooves constitute a limiting structure.

[0008] Preferably, the sleeve, spring, baffle, limit block, limit groove and support rod are arranged in four groups at equal distances on the limit plate, and the limit plate is fixed obliquely between two groups of U-shaped frames.

[0009] Preferably, the top-view cross-section of the first through groove is circular, and the top-view cross-section of the internal threaded barrel is square, and the diameter of the top-view cross-section of the first through groove is equal to the diagonal length of the top-view cross-section of the internal threaded barrel.

[0010] Preferably, the first through groove, the internal threaded tube, the threaded rod and the connecting plate constitute an adjustment structure, and the lengths of the first through groove and the threaded rod are both smaller than the height of the back plate.

[0011] Preferably, two groups of the first sliding blocks and the first sliding rails are symmetrically arranged between the second through slot and the connecting plate, and the lengths of the two groups of the first sliding blocks and the first sliding rails are equal to the second through slot, and the lengths of the second through slot and the first through slot are equal.

[0012] Preferably, the massage device comprises a box body, a side frame, a massage motor, an output shaft, a second bearing, a cam and a bump; one side of the connecting plate is fixedly connected to the box body, one side of the box body is fixedly connected to the side frame, the massage motor is fixedly connected in the side frame, the output end of the massage motor is fixedly connected to the output shaft, one end of the output shaft passes through the box body and is fixedly connected in the second bearing, the second bearing is fixedly connected to the inner wall of the box body, the output shaft is fixedly connected to the cam, and the cam is fixedly connected to the bump.

[0013] Preferably, four groups of cams are arranged at equal distances on the second bearing, and six groups of protrusions are arranged in a ring array on the four groups of cams, and the materials of the cams and the protrusions are rubber.

[0014] Preferably, the docking plates, clamping pads, docking grooves, second threaded holes and second locking bolts are symmetrically arranged in two groups on both sides of the seat plate, and the cross-sectional shapes of the two groups of docking plates, clamping pads and docking grooves are both T-shaped.

[0015] Preferably, the outer cross-sectional area of ​​the card pad is equal to the inner cross-sectional area of ​​the docking groove, and the inner cross-sectional area of ​​the card pad is equal to the cross-sectional area of ​​the docking plate, and the material of the card pad is rubber.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the adjustable office chair is conducive to relieving fatigue:

[0017] 1. A U-shaped frame, a connecting bolt, a first threaded hole, a first locking bolt, a docking plate, a clamping pad, a docking groove, a second threaded hole, and a second locking bolt are provided. First, the docking plate is inserted into the docking groove. When the docking plate is inserted into the docking groove, the clamping pad will be squeezed to deform the clamping pad, thereby pre-placing the seat plate in the two sets of U-shaped frames, and then the second locking bolt is rotated and the second locking bolt is passed through the second threaded hole to fix the seat plate between the two sets of U-shaped frames. Then the back plate is slid between the two sets of U-shaped frames through the second slider and the second slide rail. When sliding to a certain position, the bottom of the back plate coincides with the seat plate, and then the rotating shaft at the bottom of the back plate is inserted into the first bearing. At this time, the first locking bolt is passed through the first threaded hole to fix the rotating shaft in the first bearing, thereby completing the splicing of the U-shaped frame, the back plate and the seat plate, so as to facilitate assembly and splicing. Place the limit plate between the two sets of U-shaped frames so that the support rod is aligned, and then rotate the connecting bolt to fix the limit plate;

[0018] 2. A sleeve, a spring, a baffle, a limit block, a limit groove, and a support rod are provided. After the U-shaped frame, the back plate and the seat plate are spliced ​​together, the limit plate is placed between the two sets of U-shaped frames so that the support rod is against one side of the back plate, and then the connecting bolt is rotated to fix the limit plate between the two sets of U-shaped frames. When the office worker leans back, the back plate rotates backward through the action of the rotating shaft and the first bearing. At this time, the back plate squeezes the support rod, and the support rod squeezes the spring in the sleeve through the baffle. The impact force when leaning back is reduced by the expansion and contraction of the spring, which can not only effectively improve the comfort, but also does not need to be buffered by the characteristics of the material of the office chair itself, preventing the back plate from being broken, thereby improving the working life of the office chair;

[0019] 3. A second slider, a second slide rail and a groove are provided. The second slider, the second slide rail and the groove are symmetrically arranged in two groups. When the back panel rotates backward through the action of the rotating shaft and the first bearing, since the two groups of grooves are inclinedly opened on the inner side above the U-shaped frame, the second slider will slide in the second slide rail following the rotation of the back panel, restricting the back panel and preventing it from falling off between the two groups of U-shaped frames, thereby improving the overall stability of the office chair.

[0020] 4. A massage device is provided, and the massage device includes a box body, a side frame, a massage motor, an output shaft, a second bearing, a cam, and a protrusion. After the position adjustment is completed, the massage motor in the side frame is started, the massage motor drives the output shaft, and the output shaft drives the cam to rotate through the second bearing. When the cam rotates, the protrusion is also driven to rotate together. Since a part of the cam is exposed through the box body, it can perform a striking massage on the back of the office worker, thereby effectively relieving fatigue.

[0021] 5. A first through groove, an internally threaded barrel, a threaded rod, a connecting plate, a first slider, a first slide rail and a second through groove are provided. When fatigue relief is needed, the threaded rod is rotated. Since the top-view cross-sectional shape of the first through groove is circular, and the top-view cross-sectional shape of the internally threaded barrel is square, and the diameter of the top-view cross-sectional shape of the first through groove is equal to the diagonal length of the top-view cross-sectional shape of the internally threaded barrel, the internally threaded barrel will not rotate along with the rotation of the threaded rod, so that the internally threaded barrel can move up and down in the first through groove. In the process of the internally threaded barrel moving up and down, the connecting plate moves along with the up and down movement of the internally threaded barrel through the action of the first slider and the first slide rail, so as to adjust the position of the massage device, so that the massage device can be more accurately moved to the position where massage is needed, thereby improving the effect of relieving fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the second through slot structure of the present invention;

[0024] Figure 3It is a schematic diagram of the seat plate structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the new internal threaded barrel of the present invention.

[0026] Figure 5 This is an enlarged view of the new A-section structure of the present invention.

[0027] In the figure: 1, U-shaped frame; 2, connecting bolt; 3, limiting plate; 4, sleeve; 5, spring; 6, baffle; 7, limiting block; 8, limiting groove; 9, support rod; 10, protective cover; 11, back plate; 12, first through groove; 13, internal threaded tube; 14, threaded rod; 15, connecting plate; 16, first slider; 17, first slide rail; 18, second through groove; 19, massage device; 1901, box body; 1902, side frame ; 1903, massage motor; 1904, output shaft; 1905, second bearing; 1906, cam; 1907, bump; 20, rotating shaft; 21, first bearing; 22, first threaded hole; 23, first locking bolt; 24, seat plate; 25, docking plate; 26, pad; 27, docking groove; 28, second threaded hole; 29, second locking bolt; 30, second slider; 31, second slide rail; 32, groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-5The present invention provides a technical solution: an adjustable office chair that is conducive to relieving fatigue, comprising two U-shaped frames 1, connecting bolts 2, limiting plates 3, sleeves 4, springs 5, baffles 6, limiting blocks 7, limiting grooves 8, support rods 9, protective sleeves 10, backboards 11, first through grooves 12, internal threaded tubes 13, threaded rods 14, connecting plates 15, first sliders 16, first slide rails 17, second through grooves 18, massage devices 19, rotating shafts 20, first bearings 21, first threaded holes 22, first locking bolts 23, seat plates 24, docking plates 25, card pads 26, docking grooves 27, second threaded holes 28, second locking bolts 29, second sliders 30, second slide rails 31 and grooves 32. The two U-shaped frames 1 constitute the base of the office chair, which plays a role in supporting the entire chair. The bottom of the U-shaped frame 1 is connected to the limiting plate 3 by connecting bolts 2, and a sleeve 4 is provided on the plate surface of the limiting plate 3 on the side close to the backboard 11. The bottom of the sleeve 4 is hinged to the surface of the back plate 11, preferably in a spherical hinged manner. A spring 5 is fixedly connected to the bottom surface of the inner tube of the sleeve 4; a baffle 6 is fixedly connected to one end of the spring 5 away from the bottom surface of the inner tube of the sleeve 4; a limiting block 7 is fixedly connected to one side of the baffle 6, and the limiting block 7 is slidably connected in a limiting groove 8, and the limiting groove 8 is provided on the inner side wall of the sleeve 4. A support rod 9 is fixedly connected to the side of the baffle 6 away from the spring. When the baffle 6 is pressed by the support rod, the spring can be compressed so that the distance between the limiting plate 3 and the back plate 11 can be adjusted. The sleeve 4, spring 5, baffle 6, limiting block 7, limiting groove 8 and support rod 9 are arranged in multiple groups at equal distances on the limiting plate 3, preferably four groups. The limit plate 3 is obliquely arranged between the two groups of U-shaped frames 1, so that when the support rod 9 is squeezed by the back plate 11, the support rod 9 can squeeze the spring 5 in the sleeve 4 through the baffle 6, and the impact force when leaning back is mitigated by the expansion and contraction of the spring 5, which can not only effectively improve the comfort, but also does not need to be buffered by the characteristics of the material of the office chair itself, thereby preventing the back plate 11 from being broken due to excessive force when the overweight user leans back, and has high safety performance.

[0030] A protective sleeve 10 is provided at one end of the support rod 9. The support rod 9 and the protective sleeve 10 are movably connected. In specific implementation, the end of the support rod can be connected to the protective sleeve 10 through a ball joint structure. A back panel 11 is fixedly connected to the protective sleeve 10, and the protective sleeve 10 is sleeved on the back panel 11 to form the backrest of the chair. A first through groove 12 is provided on the top of the back panel 11, and an internal threaded tube 13 is snap-connected to the first through groove 12. The cross-sectional shape of the first through groove 12 is circular, and the outer periphery of the cross-sectional shape of the internal threaded tube 13 is square, such as Figure 4As shown. The diameter of the cross section of the first through groove 12 is almost equal to the diagonal length of the cross section of the internal threaded barrel 13, that is, the square of the cross section of the internal threaded barrel 13 is the inscribed square of the circular cross section of the first through groove 12, thereby preventing the internal threaded barrel 13 from rotating along with the rotation of the threaded rod 14. The internal threaded barrel 13 and the threaded rod 14 form a structure similar to a screw nut, and when the threaded rod 14 rotates, the internal threaded barrel 13 can move linearly along the axial direction of the threaded rod 14. The internal thread of the internal threaded barrel 13 is connected to the threaded rod 14, and a connecting plate 15 is fixedly connected to one side of the internal threaded barrel 13. The first through groove 12, the internal threaded barrel 13, the threaded rod 14 and the connecting plate 15 constitute an adjustment structure for adjusting the height position of the massage device 19 on the backrest. The lengths of the first through groove 12 and the threaded rod 14 are both smaller than the height of the back plate 11, preventing the internal threaded barrel 13 from falling. A first slider 16 is fixedly connected to one side of the connecting plate 15. The first slider 16 is slidably connected to the first slide rail 17 and can move linearly along the track of the first slide rail 17. The first slide rail 17 is fixedly arranged on the inner side wall of the second through slot 18. Two groups of the first slider 16 and the first slide rail 17 are symmetrically arranged between the second through slot 18 and the connecting plate 15.

[0031] The lengths of the first slide rail 17 and the second through slot 18 are equal, and the lengths of the second through slot 18 and the first through slot 12 are equal, so that the connecting plate 15 can move linearly with the internal threaded tube 13 under the drive of the threaded rod 14 through the action of the first slider 16 and the first slide rail 17. The second through slot 18 is opened in front of the first through slot 12, and the stop plate 3 is relatively located behind the first through slot 12; the front and back here are consistent with the front and back when the user sits down, such as Figure 1As shown. The side of the connecting plate 15 away from the limiting plate 3 is fixedly connected with a massage device 19, that is, the massage device is fixed to the front end of the connecting plate 15. The massage device 19 includes a box body 1901, a side frame 1902, a massage motor 1903, an output shaft 1904, a second bearing 1905, a cam 1906, and a protrusion 1907. The front end of the connecting plate 15 is fixedly connected to the box body 1901, and one side of the box body 1901 is fixedly connected to the side frame 1902, and the massage motor 1903 is fixedly connected inside the side frame 1902. The output end of the massage motor 1903 is fixedly connected to the output shaft 1904. One end of the output shaft 1904 passes through the box body 1901 and is fixedly connected to the second bearing 1905, and the second bearing 1905 is fixedly connected to the inner wall of the box body 1901. The output shaft 1904 is fixedly connected with a cam 1906, and the cam 1906 is fixedly connected with a protrusion 1907. Four groups of cams 1906 are arranged at equal distances on the second bearing 1905, and six groups of protrusions 1907 are arranged in a ring array on the outer peripheral surfaces of the four groups of cams 1906, and the materials of the cams 1906 and the protrusions 1907 are rubber. The cams 1906 and the protrusions 1907 can massage the back and the contact position of the cams 1906 and the protrusions 1907 when the back of the office worker is pressed against the cams 1906 and the protrusions 1907, thereby relieving fatigue.

[0032] A rotating shaft 20 is fixedly connected to one side of the bottom of the back plate 11. The rotating shaft 20 is sleeved in a first bearing 21. A first threaded hole 22 is provided on the rotating shaft 20. A first locking bolt 23 is threadedly connected in the first threaded hole 22. The first bearing 21 is embedded in a seat plate 24. The rotating shaft 20 passes through the bottom of the back plate 11 and the two ends pass through the two first bearings 21 on the seat plate 24, so that the back plate 11 can rotate around the rotating shaft 20, thereby adjusting the tilt angle of the back plate 11. The back plate can be tilted backward, making the backrest more comfortable.

[0033] A docking plate 25 is fixedly connected to one side of the seat plate 24, and the docking plate 25 is snap-fitted into a clamping pad 26, and the clamping pad 26 is fixedly connected into a docking groove 27. The outer cross-sectional area of ​​the clamping pad 26 is equal to the inner cross-sectional area of ​​the docking groove 27, and the inner cross-sectional area of ​​the clamping pad 26 is equal to the cross-sectional area of ​​the docking plate 25, and the material of the clamping pad 26 is rubber, so that the docking plate 25 squeezes the clamping pad 26 when it is snapped into the docking groove 27, thereby increasing the friction force, so that the seat plate 24 can be stably connected to the two sets of U-shaped frames 1.

[0034] The docking plate 25 is provided with a second threaded hole 28, and two groups of the docking plate 25, the clamping pad 26, the docking groove 27, the second threaded hole 28 and the second locking bolt 29 are symmetrically arranged on both sides of the seat plate 24, and the cross-sectional shapes of the two groups of docking plates 25, the clamping pad 26 and the docking groove 27 are all T-shaped, so that the docking plate 25 can be inserted into the docking groove 27 more stably. The second threaded hole 28 is internally threadedly connected with the second locking bolt 29.

[0035] The second slider 30 is fixedly connected to one side of the back plate 11, and the second slider 30 is slidably connected in the second slide rail 31, and the second slide rail 31 is fixedly connected in the groove 32. The U-shaped frame 1, the connecting bolt 2, the second slider 30, the second slide rail 31 and the groove 32 are symmetrically arranged in two groups, and the two groups of grooves 32 are obliquely opened on the upper inner side of the U-shaped frame 1, and the two groups of second sliders 30, the second slide rail 31 and the groove 32 constitute a limiting structure. When the back plate 11 rotates backward through the action of the rotating shaft 20 and the first bearing 21, the second slider 30 will slide in the second slide rail 31 following the rotation of the back plate 11, and limit the back plate 11 to prevent the back plate 11 from falling off between the two groups of U-shaped frames 1. The groove 32 is opened on the upper inner side of the U-shaped frame 1. Figure 1 Schematic diagram, in specific implementation, since the trajectory of the second slider 30 when the back plate 11 rotates is an arc, the center of which is the center of the rotating shaft 20. Therefore, a section of the second slide rail 31 is set on the right end section of the upper section of the U-shaped frame 1, which is arc-shaped and aligned with the attached Figure 1 The straight lines in the schematic diagram are slightly different.

[0036] Working principle: When using the adjustable office chair that helps relieve fatigue, a simple understanding of the device is given. First, insert the docking plate 25 into the docking groove 27. When the docking plate 25 is inserted into the docking groove 27, the card pad 26 will be squeezed to deform the card pad 26, thereby pre-placing the seat plate 24 in the two sets of U-shaped frames 1, and then rotate the second locking bolt 29, and pass the second locking bolt 29 through the second threaded hole 28, so as to fix the seat plate 24 between the two sets of U-shaped frames 1, and then slide the back plate 11 between the two sets of U-shaped frames 1 through the second slider 30 and the second slide rail 31. When sliding to a certain position, the bottom of the back plate 11 coincides with the seat plate 24, and then insert the rotating shaft 20 at the bottom of the back plate 11 into the first bearing 21. At this time, the first locking bolt 23 is passed through the first threaded hole 22 to fix the rotating shaft 20 in the first bearing 21, so that the U-shaped frame 1, the back plate 11 and the seat plate 24 are spliced ​​together, so as to facilitate assembly and splicing. Place the limiting plate 3 between the two sets of U-shaped frames 1 so that the supporting rods 9 are aligned, and then rotate the connecting bolts 2 to fix the limiting plate 3.

[0037] After the U-shaped frame 1, the back plate 11 and the seat plate 24 are assembled, the limit plate 3 is placed between the two sets of U-shaped frames 1, so that the support rod 9 is against one side of the back plate 11, and then the connecting bolt 2 is rotated to fix the limit plate 3 between the two sets of U-shaped frames 1. When the office worker leans back, the back plate 11 rotates backward through the action of the rotating shaft 20 and the first bearing 21. At this time, the back plate 11 squeezes the support rod 9, and the support rod 9 squeezes the spring 5 in the sleeve 4 through the baffle 6. The expansion and contraction of the spring 5 reduces the impact force when leaning back, which can not only effectively improve comfort, but also does not need to be buffered by the characteristics of the material of the office chair itself, preventing the back plate 11 from being broken, thereby increasing the working life of the office chair.

[0038] Then, when the back panel 11 rotates backward through the action of the rotating shaft 20 and the first bearing 21, since the two groups of grooves 32 are inclinedly opened on the inner side above the U-shaped frame 1, the second slider 30 will slide in the second slide rail 31 following the rotation of the back panel 11, restricting the back panel 11 and preventing the back panel 11 from falling off between the two groups of U-shaped frames 1, thereby improving the overall stability of the office chair.

[0039] When fatigue relief is needed, the threaded rod 14 is rotated. Since the top-view cross-section of the first through groove 12 is circular, and the top-view cross-section of the internal threaded tube 13 is square, and the diameter of the top-view cross-section of the first through groove 12 is equal to the diagonal length of the top-view cross-section of the internal threaded tube 13, the internal threaded tube 13 will not rotate along with the rotation of the threaded rod 14, thereby enabling the internal threaded tube 13 to move up and down in the first through groove 12. During the up and down movement of the internal threaded tube 13, the connecting plate 15 moves along with the up and down movement of the internal threaded tube 13 through the action of the first slider 16 and the first slide rail 17, thereby adjusting the position of the massage device 19, so that the massage device 19 can be moved more accurately to the position where massage is required, thereby improving the effect of relieving fatigue.

[0040] When the position adjustment is completed, the massage motor 1903 in the side frame 1902 is started, and the massage motor 1903 drives the output shaft 1904, and the output shaft 1904 drives the cam 1906 to rotate through the second bearing 1905. The rotation of the cam 1906 drives the protrusion 1907 to rotate together. Since a part of the cam 1906 is exposed through the box body 1901, it can perform a massage on the back of the office worker, thereby effectively relieving fatigue. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0041] 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.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable office chair that helps relieve fatigue, characterized by: comprising a U-shaped frame (1); The bottom of the U-shaped frame (1) is fixedly connected to the limit plate (3) via a connecting bolt (2); a sleeve (4) is connected to one side of the limit plate (3); a spring (5) is fixedly connected to the inner bottom surface of the sleeve (4); one end of the spring (5) is fixedly connected to a baffle (6); a limit block (7) is fixedly connected to one side of the baffle (6); the limit block (7) is slidably connected to a limit groove (8); the limit groove (8) is provided on the inner side wall of the sleeve (4); a support rod (9) is fixedly connected to one side of the baffle (6); A protective sleeve (10) is provided at one end of the support rod (9); a back plate (11) is fixedly connected inside the protective sleeve (10); a first through groove (12) is provided on the back plate (11); an internal threaded tube (13) is snap-connected inside the first through groove (12); a threaded rod (14) is internally threadedly connected to the internal threaded tube (13), and a connecting plate (15) is fixedly connected to one side of the internal threaded tube (13); a first slider (16) is fixedly connected to one side of the connecting plate (15), the first slider (16) is slidably connected to the first slide rail (17), and the first slide rail (17) is fixedly connected to the inner side wall of the second through groove (18); the second through groove (18) is provided above the first through groove (12); a massage device (19) is fixedly connected to one side of the connecting plate (15); a rotating shaft (20) is fixedly connected to one side of the bottom of the back plate (11); the rotating shaft (20 ) is sleeved in the first bearing (21); a first threaded hole (22) is provided on the rotating shaft (20); a first locking bolt (23) is threadedly connected to the first threaded hole (22); the first bearing (21) is embedded in the seat plate (24); a docking plate (25) is fixedly connected to one side of the seat plate (24); the docking plate (25) is snap-connected to the clamping pad (26); the clamping pad (26) is fixedly connected to the docking groove (27); a second threaded hole (28) is provided on the docking plate (25); a second locking bolt (29) is threadedly connected to the second threaded hole (28); a second slider (30) is fixedly connected to one side of the back plate (11); the second slider (30) is slidably connected to the second slide rail (31); the second slide rail (31) is fixedly connected to the groove (32); the groove (32) is provided on the inner side of the upper part of the U-shaped frame (1); The U-shaped frame (1), the connecting bolts (2), the second slider (30), the second slide rail (31) and the groove (32) are symmetrically arranged in two groups, and the two groups of grooves (32) are obliquely opened on the upper inner side of the U-shaped frame (1), and the two groups of second sliders (30), the second slide rail (31) and the groove (32) constitute a limiting structure; The massage device (19) comprises a box body (1901), a side frame (1902), a massage motor (1903), an output shaft (1904), a second bearing (1905), a cam (1906) and a protrusion (1907).

2. The adjustable fatigue-relieving office chair according to claim 1, characterized in that: The sleeve (4), spring (5), baffle (6), limit block (7), limit groove (8) and support rod (9) are arranged in four groups at equal distances on the limit plate (3), and the limit plate (3) is fixed obliquely between the two groups of U-shaped frames (1).

3. The adjustable fatigue-relieving office chair according to claim 1, characterized in that: The top-view cross-section of the first through groove (12) is circular, and the top-view cross-section of the internal threaded barrel (13) is square, and the diameter of the top-view cross-section of the first through groove (12) is equal to the diagonal length of the top-view cross-section of the internal threaded barrel (13).

4. The adjustable fatigue-relieving office chair according to claim 1, characterized in that: The first through groove (12), the internal threaded tube (13), the threaded rod (14) and the connecting plate (15) constitute an adjustment structure, and the lengths of the first through groove (12) and the threaded rod (14) are both smaller than the height of the back plate (11).

5. The adjustable fatigue-relieving office chair according to claim 1, characterized in that: The first sliding block (16) and the first sliding rail (17) are symmetrically arranged in two groups between the second through slot (18) and the connecting plate (15), and the length of the first sliding rail (17) is equal to that of the second through slot (18), and the length of the second through slot (18) is equal to that of the first through slot (12).

6. The adjustable fatigue-relieving office chair according to claim 1, characterized in that: The cams (1906) are arranged in four groups at equal distances on the second bearing (1905), and six groups of protrusions (1907) are arranged in a ring array on the four groups of cams (1906), and the materials of the cams (1906) and the protrusions (1907) are both rubber.

7. The adjustable fatigue-relieving office chair according to claim 6, characterized in that: The docking plate (25), the clamping pad (26), the docking groove (27), the second threaded hole (28) and the second locking bolt (29) are symmetrically arranged in two groups on both sides of the seat plate (24), and the cross-sectional shapes of the two groups of docking plates (25), the clamping pad (26) and the docking groove (27) are both T-shaped.

8. The adjustable fatigue-relieving office chair according to claim 6, characterized in that: The external cross-sectional area of ​​the clamping pad (26) is equal to the internal cross-sectional area of ​​the docking groove (27), and the internal cross-sectional area of ​​the clamping pad (26) is equal to the cross-sectional area of ​​the docking plate (25), and the material of the clamping pad (26) is rubber.

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