Adjustable massage office chair back

Abstract

The utility model discloses an adjustable massage office chair back which comprises a chair back supporting frame, a chair back movable groove and a chair back adjusting mechanism are arranged on the chair back supporting frame, the chair back adjusting mechanism comprises a fixed plate and a movable plate, the fixed plate and the movable plate are fixed on the chair back supporting frame and a chair back support respectively, a first track groove is formed in the fixed plate, and a second track groove is formed in the movable plate. A pair of first blocking pieces are symmetrically arranged on the first rail groove, steps are arranged at the two ends of the movable plate, the two ends of the movable plate are buckled in the first blocking pieces on the first rail groove, and therefore the movable plate can move in the fixed plate, a fan-shaped groove is formed in the center of the first rail groove, an arc-shaped gasket, a second blocking piece and a movable piece are arranged in the fan-shaped groove, and one end of the movable piece is fixed in the fan-shaped groove. One end of the movable plate is provided with a buckle, the other end of the movable plate is provided with a buckle, the inner side of the movable plate is provided with a sawtooth-shaped track groove, the sawtooth-shaped track groove is provided with a plurality of sawtooth grooves, and the chair back support and the chair back supporting frame are buckled in different sawtooth grooves of the sawtooth-shaped track groove of the movable plate through the buckle on the movable plate to achieve connection and adjustment of the chair back support.

Description

Technical Field

[0001] This utility model relates to the field of office chair back technology, and in particular to an adjustable massage office chair back. Background Technology

[0002] In modern office environments, prolonged sitting can easily lead to fatigue and lower back pain. Traditional office chairs offer limited functionality, providing only basic support and failing to effectively alleviate pressure on various parts of the body. Furthermore, some office chairs on the market lack adjustability, offering only one size that cannot accommodate users of different heights, potentially causing back pain, neck stiffness, and other problems with prolonged use, impacting work efficiency and health. With the increasing demand for healthy office environments, massage office chairs have emerged. These chairs integrate massage functionality into the basic office chair design. Through built-in massage devices, they can target fatigue-prone areas such as the lower back and are freely adjustable to accommodate users of different heights. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a massage office chair back that is flexible, comfortable and adjustable, with a massage function for the waist.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable massage office chair backrest, including a backrest support frame, a backrest movable groove on the backrest support frame, a cover plate above the backrest movable groove, a backrest adjustment mechanism inside the cover plate, a backrest bracket movably mounted on the backrest adjustment mechanism, the backrest adjustment mechanism including a fixed plate and a movable plate, the fixed plate being fixed to the backrest support frame, the movable plate being fixed to the backrest bracket, a track groove being provided on the fixed plate, a pair of baffles being symmetrically provided on the track groove, steps being provided at both ends of the movable plate, the steps being fastened between the track groove and the baffles, and a center position of the track groove being provided with... The chair back support frame is equipped with a fan-shaped groove and an arc-shaped gasket inside. Below the arc-shaped gasket is a second baffle plate. Below the second baffle plate is a movable piece and a ring-shaped fixed step post. One end of the movable piece is fixed to the ring-shaped fixed step post, and one side of the other end is movable on the arc-shaped gasket, while the other side has a buckle. A U-shaped limiting piece is provided on the outside of the movable piece, and rectangular blocks are provided at both ends of the U-shaped limiting piece. A pair of rectangular blocks abut against the two ends of the second baffle plate. A serrated track groove is provided on the inside of the movable plate, and several serrated grooves are provided in the serrated track groove. The chair back support frame and the chair back bracket are movably connected by the buckle on the movable piece being fastened in the serrated groove of the serrated track groove of the movable plate.

[0005] Preferably, the chair back support includes a lumbar support, a back support, and a hollow cylinder. The lumbar support has a lumbar massage mechanism at its center, which has two pairs of massage rollers. A massage housing is fixed to the outside of the lumbar massage mechanism by threads. One end of the massage housing has a movable column, which has several ribs on its outer side and bolts threaded on its inner side. A knob is located on one side of the hollow cylinder, and the knob is fixed to the bolt by screws. Several track grooves are provided inside the hollow cylinder, and the knob is fixed to the bolt by screws. The massage housing and the back support are movably connected by the ribs on the outer side of the movable column engaging with the track grooves inside the hollow cylinder.

[0006] Preferably, the massage housing has a pair of control buttons and a charging port on one side. The control buttons include a power control button and a heating control button. The pair of control buttons are located on both sides of the charging port. The two pairs of massage rollers are connected to the motor through a connecting wire. The motor is connected to the control buttons and the charging port through a connecting wire. A protective strip is provided on the outside of the motor and is threadedly fixed to the massage housing.

[0007] Preferably, all corners in the sawtooth track groove are rounded.

[0008] Preferably, the back support and the hollow cylinder are injection molded as one piece, and the massage shell, the moving column and the ribs are injection molded as one piece.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. The adjustable massage office chair backrest is adjusted by the movement of the buckle on the movable piece inside the fixed plate within the serrated track groove of the movable plate, so as to meet the different height needs of different heights and achieve the comfort of the waist and back of all users when sitting in the chair.

[0011] 2. The adjustable massage office chair backrest uses massage rollers on the lumbar massage mechanism to massage the user's waist, relieving fatigue caused by sitting. The control buttons and charging port on the outside of the massage shell allow users to control the massage rollers as needed and charge them at any time.

[0012] 3. The adjustable massage office chair backrest uses a movable connection between the ribs on the outer side of the massage shell and the track groove 2 inside the hollow cylinder on the backrest support, as well as the rotational cooperation between the knob and the bolt, to move the massage rollers. This allows the massage rollers to fit the waist more closely during massage, achieving more beneficial massage conditions. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the chair back support structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the movable plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the movable piece structure of this utility model;

[0021] Figure 7 This is a side view of the massage housing structure of this utility model;

[0022] Figure 8 This is a cross-sectional view of the hollow cylindrical structure of this utility model.

[0023] In the diagram: 1. Backrest support frame; 2. Backrest movable groove; 3. Backrest adjustment mechanism; 4. Backrest bracket; 5. Fixed plate; 6. Movable plate; 7. Track groove one; 8. Baffle one; 9. Step; 10. Fan-shaped groove; 11. Arc-shaped pad; 12. Baffle two; 13. Movable piece; 14. Circular ring fixing step column; 15. Buckle; 16. U-shaped limit piece; 17. Rectangular block; 18. Serrated track groove; 19. Lumbar support; 20. Backrest support; 21. Hollow cylinder; 22. Lumbar massage mechanism; 23. Massage shell; 24. Massage wheel; 25. Moving column; 26. Rib; 27. Bolt; 28. Knob; 29. ​​Track groove two; 30. Control button; 31. Charging port; 32. Motor; 33. Protective strip; 34. Cover plate. Detailed Implementation

[0024] like Figure 1-8As shown, an adjustable massage office chair back includes a backrest support frame 1, a backrest movable groove 2 on the backrest support frame 1, a cover plate 34 above the backrest movable groove 2, a backrest adjustment mechanism 3 inside the cover plate 34, a backrest bracket 4 movably mounted on the backrest adjustment mechanism 3, the backrest adjustment mechanism 3 including a fixed plate 5 and a movable plate 6, the fixed plate 5 being fixed to the backrest support frame 1, the movable plate 6 being fixed to the backrest bracket 4, the fixed plate 5 having a track groove 7, a pair of baffles 8 symmetrically arranged on the track groove 7, steps 9 at both ends of the movable plate 6, the steps 9 fastening between the track groove 7 and the baffles 8, a fan-shaped groove 10 at the center of the track groove 7, and an arc-shaped groove 10 inside the fan-shaped groove 10. A curved gasket 11 is provided, and a second baffle 12 is provided below the curved gasket 11. A movable piece 13 and a circular fixed step post 14 are provided below the second baffle 12. One end of the movable piece 13 is fixed to the circular fixed step post 14, and one side of the other end is movable on the curved gasket 11, while the other side is provided with a buckle 15. A U-shaped limiting piece 16 is provided on the outside of the movable piece 13. A rectangular block 17 is provided at both ends of the U-shaped limiting piece 16. A pair of rectangular blocks 17 abut against the two ends of the second baffle 12. A serrated track groove 18 is provided on the inner side of the movable plate 6. The serrated track groove 18 has several serrated grooves. The backrest support frame 1 and the backrest bracket 4 are fastened to the serrated grooves of the serrated track groove 18 on the movable piece 13 by the buckle 15 on the movable piece 13. The chair back support 4 includes a lumbar support 19, a back support 20, and a hollow cylinder 21. The lumbar support 19 has a lumbar massage mechanism 22 at its center, with two pairs of massage rollers 24. A massage housing 23 is threadedly fixed to the outside of the lumbar massage mechanism 22. One end of the massage housing 23 has a movable column 25, with several ribs 26 on its outer side and bolts 27 threaded on its inner side. A knob 28 is located on one side of the hollow cylinder 21, and the knob 28 is fixedly connected to the bolt 27 by screws. Several track grooves 29 are located inside the hollow cylinder 21. The massage housing 23 and the back support 20 are connected by the ribs 26 on the outer side of the movable column 25. The track groove 29 inside the hollow cylinder 21 is movably connected; a pair of control buttons 30 and a charging port 31 are provided on one side of the massage housing 23. The control buttons 30 include a power control button and a heating control button. The pair of control buttons 30 are located on both sides of the charging port 31. The two pairs of massage rollers 24 are connected to the motor 32 through a connecting wire. The motor 32 is connected to the control buttons 30 and the charging port 31 through a connecting wire. A protective strip 33 is provided on the outside of the motor 32. The protective strip 33 is threaded and fixed to the massage housing 23; all corners in the sawtooth track groove 18 are rounded; the back support 20 and the hollow cylinder 21 are injection molded as one piece, and the massage housing 23, the moving column 25 and the rib 26 are injection molded as one piece.

[0025] The chair back support frame 1 of this utility model is used to connect the chair back support 4 and the seat base. The chair back movable groove 2 facilitates the up-and-down adjustment of the chair back support 4, preventing the chair back support 4 from being blocked by the hollow cylinder 21 on the chair back support 4. The chair back adjustment mechanism 3 enables the up-and-down adjustment of the chair back support 4 on the chair back support frame 1. The step 9 on the movable plate 6 is fastened between the track groove 7 and the baffle 8, which not only connects the movable plate 6 to the fixed plate 5, but also enables the movable plate 6 to move up and down in the fixed plate 5. The circular ring fixing step post 14 in the fan-shaped groove 10 is used to fix one end of the movable piece 13. The arc-shaped pad 11 is used to support the other end of the movable piece 13, keeping the movable piece 13 stable and preventing it from shaking in the fan-shaped groove 10. The U-shaped limiting piece 16 Made of elastic metal material, while limiting the rotation range of the movable piece 13, it also allows the movable piece 13 to swing to a certain extent under force. A pair of rectangular blocks 17 on the U-shaped limiting piece 16 are fastened to both ends of the baffle 12, which helps to prevent the ends of the U-shaped limiting piece 16 from shrinking and deforming, and better limits the movable piece 13. The buckles 15 on the movable piece 13 are fastened to different positions of the serrated grooves on the serrated track groove 18, which can realize the up and down adjustment and fixation of the movable plate 6 on the fixed plate 5, thereby completing the up and down adjustment of the chair back bracket 4 on the chair back support frame 1. The buckles 15 can swing within a certain range under the action of the U-shaped limiting piece 16. When the movable plate 6 is pulled up and down, under the action of force, the buckles 15 and the groove wall of the serrated track groove 18 are engaged. The mutual compression causes the buckle 15 to swing. When not compressed, the buckle 15 returns to its original position and engages with different serrated grooves on the serrated track groove 18, enabling vertical adjustment between the movable plate 6 and the fixed plate 5, thereby achieving vertical adjustment of the chair back support 4. All corners in the serrated track groove 18 are rounded, which facilitates more flexible, free, and less jamming movement of the buckle 15 within the serrated track groove 18. The lumbar support 19 and back support 20 support the waist and back of the human body, relieving lower back and back pain caused by prolonged sitting. The massage rollers 24 on the lumbar massage mechanism 22 are controlled by the motor 32 and control keys 30 to massage the waist, further relieving lower back fatigue and achieving a more relaxed state for the human body. The charging port 31 is used for charging and powering the massage rollers. The massage housing 23 is threadedly fixed to the waist massage mechanism 22 to protect the massage rollers 24 from damage. The massage housing 23 and the moving column 25 are integrally injection molded, as are the back support 20 and the hollow cylinder 21. The massage housing 23 can move within the back support 20 by using the ribs 26 on the moving column 25 to engage with the second track groove 29 inside the hollow cylinder 21, thus adjusting the position of the waist massage mechanism 22. The bolt 27 is fixed to the knob on the hollow cylinder 21 by screws, and the bolt 27 is connected to the moving column 25 by threaded engagement. When the knob 28 is rotated, it drives the bolt 27 to rotate. Because the ribs 26 are engaged with the second track groove 29, they limit the movement of the waist massage mechanism 22.Therefore, bolt 27 will not rotate the lumbar massage mechanism 22, but it will allow the rib 26 to move on the track groove 29, thus enabling the lumbar massage mechanism 22 to move within the hollow cylinder 21. The protective strip 33 protects the lumbar massage mechanism 22 from damage, and the cover plate 34 protects the backrest adjustment mechanism 3 from damage, while also facilitating maintenance if problems arise.

[0026] When performing a waist massage, first rotate the knob 28 to control the bolt 27 to rotate, thereby moving the rib 26 within the track groove 29, which in turn moves the waist massage mechanism 22 within the hollow cylinder 21 to adjust the massage roller 24 to the most comfortable position for waist massage. Then, press the control key 30 to make the massage roller 24 rotate for waist massage.

[0027] When adjusting the chair back support 4 up and down, pull the chair back support 4 upwards and use the buckle 15 to engage with different serrated grooves in the serrated track groove 18 to adjust the chair back support 4 to the appropriate position and complete the adjustment of the chair back support 4.

[0028] The specific embodiments described herein are merely illustrative of the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An adjustable massage office chair backrest, comprising a backrest support frame (1), characterized in that, The chair back support frame (1) is provided with a chair back movable groove (2), and a cover plate (34) is provided above the chair back movable groove (2). A chair back adjustment mechanism (3) is provided inside the cover plate (34). A chair back bracket (4) is movably installed on the chair back adjustment mechanism (3). The chair back adjustment mechanism (3) includes a fixed plate (5) and a movable plate (6). The fixed plate (5) is fixed on the chair back support frame (1), and the movable plate (6) is fixed on the chair back bracket (4). A track groove (7) is provided on the fixed plate (5). A pair of baffles (8) are symmetrically provided on the track groove (7). Steps (9) are provided at both ends of the movable plate (6). The steps (9) are fastened between the track groove (7) and the baffles (8). A fan-shaped groove (10) is provided at the center of the track groove (7). An arc-shaped gasket (11) is provided inside the fan-shaped groove (10). 1) A second baffle (12) is provided at the lower position. A movable piece (13) and a ring-fixed step column (14) are provided below the second baffle (12). One end of the movable piece (13) is fixed on the ring-fixed step column (14), and one side of the other end is movable on the arc-shaped pad (11). The other side is provided with a buckle (15). A U-shaped limiting piece (16) is provided on the outside of the movable piece (13). A rectangular block (17) is provided at both ends of the U-shaped limiting piece (16). A pair of rectangular blocks (17) abut against the two ends of the second baffle (12). A sawtooth track groove (18) is provided on the inner side of the movable plate (6). A number of sawtooth grooves are provided in the sawtooth track groove (18). The chair back support frame (1) and the chair back support frame (4) are connected in a movable manner by the buckle (15) on the movable piece (13) being fastened in the sawtooth groove of the sawtooth track groove (18) of the movable plate (6).

2. The adjustable massage office chair backrest according to claim 1, characterized in that, The chair back support (4) includes a lumbar support (19), a back support (20) and a hollow cylinder (21). The lumbar support (19) has a lumbar massage mechanism (22) at its center. The lumbar massage mechanism (22) has two pairs of massage rollers (24). The lumbar massage mechanism (22) has a massage housing (23) fixed to its outer side by threads. One end of the massage housing (23) has a moving column (25). The moving column (25) has several ribs (26) on its outer side and a bolt (27) threaded on its inner side. The hollow cylinder (21) has a knob (28) on one side. The knob (28) and the bolt (27) are fixedly connected by screws. The hollow cylinder (21) has several track grooves (29) inside. The massage housing (23) and the back support (20) are connected movably by the ribs (26) on the outer side of the moving column (25) fastening to the track grooves (29) inside the hollow cylinder (21).

3. The adjustable massage office chair backrest according to claim 2, characterized in that, The massage housing (23) has a pair of control keys (30) and a charging port (31) on one side. The control keys (30) include a power control key and a heating control key. The pair of control keys (30) are located on both sides of the charging port (31). The two pairs of massage rollers (24) are connected to the motor (32) through a connecting wire. The motor (32) is connected to the control keys (30) and the charging port (31) through a connecting wire. The motor (32) has a protective strip (33) on the outside. The protective strip (33) is threadedly fixed to the massage housing (23).

4. The adjustable massage office chair backrest according to claim 1, characterized in that, All corners in the sawtooth track groove (18) are rounded.

5. The adjustable massage office chair backrest according to claim 2, characterized in that, The back support (20) and the hollow cylinder (21) are injection molded as one piece, and the massage shell (23), the moving column (25) and the rib (26) are injection molded as one piece.

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