A linkage-adjusted massage chair

Abstract

The present application relates to the technical field of massage chair, and proposes a linkage adjustment massage chair, which comprises a riding part, a supporting part and a connecting shaft, wherein the riding part comprises a seat mechanism and a leg support mechanism, and is used for user riding and adjusting posture; the supporting part comprises a main pulley mechanism, a secondary support mechanism, a transmission mechanism and the connecting shaft, and is used for supporting the riding part and controlling the locking state of the riding part; the left end of the seat mechanism is fixedly installed with the leg support mechanism, the inner lower part of the seat mechanism is fixedly installed with the transmission mechanism, and the lower end of the seat mechanism is fixedly installed with the secondary support mechanism; the left middle part of the rotary support frame is provided with a leg lifting connecting rod, and the right middle part of the leg lifting connecting rod is rotationally connected with a linear motor two. Through the cooperation of the seat mechanism and the leg support mechanism, the user can stretch the leg length and increase the leg support area while lifting the leg when adjusting from the sitting posture to the lying state, so that the user can obtain a better experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of massage chairs, and in particular to a linkage-adjusted massage chair. BACKGROUND

[0002] As a device that can effectively relieve human fatigue and improve comfort experience, massage chairs have been widely used in various scenes such as family, office, leisure and entertainment center, and its core function is to realize multi-posture adjustment such as sitting, half-lying and lying through the coordinated operation of mechanical structure to adapt to the ergonomic needs. With the continuous improvement of user requirements for use experience and safety, the existing massage chairs gradually integrate auxiliary functions such as leg support adjustment and posture locking, and the coordinated adjustment of the seat mechanism and the leg support mechanism is the key to improving the leg comfort, and the rationality of support stability and position locking directly relates to the safety of users during use, which has become the focus of industry technology research and development.

[0003] However, there are still many defects in the actual application of the existing massage chairs that need to be solved: first, the leg support adjustment effect is poor, most products can only realize a single leg lifting action, and cannot complete the extension of the leg length and the expansion of the support area at the same time, and due to the inconsistent design of the rotation axis point of the leg adjustment assembly, the skin cover is prone to pulling and wrinkling during lifting, which seriously affects the use experience and product appearance durability; second, the support safety is insufficient during the lying posture adjustment, the support structure area of the traditional product is fixed or the increasing range is limited, when the user adjusts the lying posture and causes the center of gravity to shift, it is easy to cause the seat to fall down, and it is difficult to ensure the use safety; third, the position locking function is not reasonably designed, most seats are either kept movable during the whole posture adjustment process, which causes insufficient stability after lying, or are in a locked state all the time, which cannot flexibly adjust the initial position according to the user's needs, and it is difficult to meet the dual needs of use convenience and safety. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide a linkage-adjusted massage chair to solve the problems raised in the background art.

[0005] To solve the above problems, the present application adopts the following technical solution: a linkage-adjusted massage chair, comprising:

[0006] a seating part, the seating part comprising a seat mechanism and a leg support mechanism, for user seating and posture adjustment;

[0007] a support part, the support part comprising a main pulley mechanism, a secondary support mechanism, a transmission mechanism and a connecting shaft, for supporting the seating part and controlling the locking state of the seating part;

[0008] The left end of the seat mechanism is fixedly installed with a leg support mechanism, the inner lower part of the seat mechanism is fixedly installed with a transmission mechanism, and the lower end of the seat mechanism is fixedly installed with a secondary support mechanism.

[0009] The leg support mechanism comprises a rotating support frame, the left middle part of the rotating support frame is provided with a leg lifting connecting rod, the right middle part of the leg lifting connecting rod is rotationally connected with a linear motor two, the inside of the rotating support frame is slidably connected with a sliding support frame, the left side of the sliding support frame is slidably connected with a sliding guide plate, the inner front upper end of the sliding support frame is fixedly connected with a limiting sliding seat, the upper end of the sliding guide plate is rotationally connected with a limiting sliding rod two, the lower end of the leg lifting connecting rod is rotationally connected with a limiting sliding rod one, the lower end inside of the leg lifting connecting rod is fixedly connected with a leg lifting sliding block, the middle part of the rotating support frame is fixedly connected with a shaft sleeve on one side, the inside of the shaft sleeve is rotationally connected with a rotating shaft, and the left end of the rotating shaft is fixedly connected with the right middle part of the sliding guide plate.

[0010] Preferably, the seat mechanism comprises a seat framework, the lower end of the seat framework is slidably connected with a support table, the lower end of the support table is fixedly connected with a support leg, the right middle part of the seat framework is rotationally connected with a linear motor one, and the lower end driving end of the linear motor one is rotationally connected with the left upper end of the support table.

[0011] Preferably, the upper end of the rotating support frame is rotationally connected with the left end of the seat framework on the front and back sides, and the upper end of the leg lifting connecting rod is rotationally connected with the left middle part of the seat framework.

[0012] Preferably, the outer periphery of the limiting sliding rod two is slidably connected in the upper end opening of the limiting sliding seat, the middle part outer periphery of the limiting sliding rod one is slidably connected in the middle part opening of the rotating support frame, and the left end outer periphery of the leg lifting sliding block is slidably connected in the lower end opening of the sliding guide plate.

[0013] Preferably, the main pulley mechanism comprises five housings, the upper end inside of each of the housings is rotationally connected with a mounting rod, the middle part of each of the housings is fixedly connected with a rotating shaft one, the outer periphery of both ends of the rotating shaft one is rotationally connected with a pulley, the upper end two side openings of each of the housings are slidably connected with a limiting sliding rod three, the lower end of each of the limiting sliding rod threes is fixedly connected with a brake pad, the upper end outer periphery of each of the limiting sliding rod threes is fixedly connected with a limiting plate, and the lower end of each of the limiting plates is fixedly connected with a spring.

[0014] Preferably, the upper end of each of the mounting rods is fixedly connected in the lower end opening of each of the five corners of the support leg, the lower end of each of the springs is fixedly connected on the upper end two sides of the housing, and the upper end of each of the limiting sliding rod threes is slidably connected in the inside of the guide groove.

[0015] Preferably, the secondary support mechanism includes a bevel gear disk, with multiple bevel gears evenly distributed around the lower outer periphery of the bevel gear disk, all of which mesh with the bevel gear disk. A threaded rod is fixedly connected to the middle of each bevel gear, and multiple support blocks are evenly distributed around the outer periphery of the threaded rod. A drive seat is threadedly connected to the outer periphery of the end of the threaded rod away from the bevel gear, and a connecting seat is fixedly connected to the end of the drive seat away from the bevel gear. Guide grooves are provided on both sides of the connecting seat at the ends away from the drive seat, and a mounting seat is fixedly connected to the end of the connecting seat away from the drive seat. A secondary pulley is rotatably connected inside the lower end of the mounting seat.

[0016] Preferably, the upper ends of the support blocks are all fixedly connected to the lower ends of the support legs, the ends of the threaded rods away from the bevel gears are all rotatably connected to the five corners of the support legs, and the upper ends of the drive seats are all slidably connected to the five corners of the support legs.

[0017] Preferably, the transmission mechanism includes a gear ring, a second rotating shaft, a sun gear, and two arc-shaped gear plates. A drive gear is meshed with the middle of each arc-shaped gear plate. The drive gears are internally fixedly connected to the front and rear ends of the second rotating shaft. A bevel gear is fixedly connected to the outer periphery of the middle of the second rotating shaft. A bevel gear is meshed with the lower end of the second bevel gear. A rotating shaft is fixedly connected to the middle of the third bevel gear. A triangular disk is fixedly connected to the lower end of the third rotating shaft. Rotating shafts are evenly distributed at the lower end of the triangular disk. Planetary gears are rotatably connected to the outer periphery of each rotating shaft. Each planetary gear meshes with the gear ring and the sun gear. A rotating shaft is fixedly connected to the middle of the sun gear. The arc-shaped gear plates are connected to the seat frame via connecting shafts.

[0018] Preferably, the right end of the arc-shaped toothed plate is rotatably connected to the lower end of the drive end of the linear motor, the middle part of the rotating shaft five is rotatably connected to the lower opening of the support platform, the lower end of the rotating shaft five is fixedly connected to the upper end of the bevel gear disk, and the outer periphery of the toothed ring is fixedly connected to the lower end of the inner side wall of the support platform.

[0019] The massage chair with linkage adjustment provided by this invention has the following beneficial effects:

[0020] 1. Through the coordination of the seat mechanism and the leg support mechanism, the user can raise their legs and extend their leg length while adjusting from a sitting position to a lying position. The increased leg support area provides a better user experience. Furthermore, because the rotating support frame, sliding support frame, and leg lifting linkage rotate in the same direction, the problem of the leather cover being stretched and wrinkled during the leg lifting process, which is common in traditional massage chairs, is avoided due to the inconsistent movement pivot points caused by the leg pivot point being below the leather cover.

[0021] 2. Through the cooperation of the transmission mechanism, the secondary support mechanism, the seat frame, and the connecting shaft, the support area of ​​the support part gradually increases as the user adjusts to a reclining position. When the support area of ​​the support part increases, the massage chair will not tip over due to the shift of the center of gravity when the user changes his / her reclining position after adjusting to a flat position, thus improving the safety of the user when using the massage chair.

[0022] 3. Through the cooperation of the secondary support mechanism and the main pulley mechanism, the user can still move the position of the massage chair during the first half of the adjustment to a reclining position, while locking the position of the massage chair during the second half of the adjustment process. This ensures that the massage chair is locked after the user is in a reclining position, thus guaranteeing both the convenience and safety of using the massage chair. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A front-view stereoscopic diagram of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0025] Figure 2 A rear-view stereoscopic diagram of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0026] Figure 3 A top-view enlarged three-dimensional schematic diagram of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0027] Figure 4 A partially enlarged three-dimensional side view of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0028] Figure 5 A partially enlarged three-dimensional schematic diagram of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0029] Figure 6 A partially enlarged three-dimensional sectional view of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0030] Figure 7 A partially enlarged three-dimensional rear view of the sitting posture of a massage chair with linkage adjustment provided in this application;

[0031] Figure 8 A partially enlarged three-dimensional side view sectional view of a massage chair with linkage adjustment provided in this application, showing the seated posture.

[0032] Figure 9 This is a partially enlarged front view of a massage chair with linkage adjustment in a lying position, as provided in this application.

[0033] In the diagram: 1. Seat mechanism; 11. Seat frame; 12. Support platform; 13. Support leg; 14. Linear motor one; 2. Leg support mechanism; 21. Rotary support frame; 22. Leg lifting linkage; 23. Linear motor two; 24. Sliding support frame; 25. Sliding guide plate; 26. Leg lifting slider; 27. Limiting slide; 28. Limiting slide rod one; 29. ​​Limiting slide rod two; 210. Bushing; 211. Rotating shaft; 3. Main pulley mechanism; 31. Housing; 32. Mounting rod; 33. Rotating shaft one; 34. Pulley; 35. Limiting slide rod three; 36. Brake 37. Car body; 38. Limiting plate; 4. Spring; 5. Secondary support mechanism; 6. Bevel gear disc; 7. Bevel gear one; 8. Threaded rod; 9. Support block; 10. Drive seat; 11. Connecting seat; 2. Guide groove; 32. Mounting seat; 43. Secondary pulley; 5. Transmission mechanism; 14. Arc-shaped toothed plate; 15. Drive gear; 16. Rotating shaft two; 17. Bevel gear two; 18. Bevel gear three; 19. Rotating shaft three; 20. Triangular disc; 21. Rotating shaft four; 22. Planetary gear; 33. Gear ring; 44. Sun gear; 55. Rotating shaft five; 6. Connecting shaft. Detailed Implementation

[0034] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0035] like Figures 1-9 As shown, this embodiment proposes a massage chair with linkage adjustment, including:

[0036] The seating section includes a seat mechanism 1 and a leg support mechanism 2, which are used for the user to sit and adjust their posture.

[0037] The support part includes a main pulley mechanism 3, a secondary support mechanism 4, a transmission mechanism 5, and a connecting shaft 6, which are used to support the seating part and control the locking state of the seating part;

[0038] A leg support mechanism 2 is fixedly installed on the left end of the seat mechanism 1, a transmission mechanism 5 is fixedly installed on the lower inner part of the seat mechanism 1, and a secondary support mechanism 4 is fixedly installed on the lower end of the seat mechanism 1.

[0039] The leg support mechanism 2 includes a rotating support frame 21. A leg-lifting link 22 is provided at the middle left side of the rotating support frame 21. A linear motor 23 is rotatably connected to the middle right side of the leg-lifting link 22. A sliding support frame 24 is slidably connected inside the rotating support frame 21. A sliding guide plate 25 is slidably connected to the left side of the sliding support frame 24. A limiting slide block 27 is fixedly connected to the upper front part of the inner side of the sliding support frame 24. A limiting slide rod 29 is rotatably connected to the upper end of the sliding guide plate 25. A limiting slide rod 28 is rotatably connected to the lower end of the leg-lifting link 22. A leg-lifting slider 26 is fixedly connected inside the lower end of the leg-lifting link 22. A bushing 210 is fixedly connected to one side of the middle part of the rotating support frame 21. A rotating shaft 211 is rotatably connected inside the bushing 210. The left end of the rotating shaft 211 is fixedly connected to the middle right side of the sliding guide plate 25.

[0040] In this embodiment, the seat mechanism 1 includes a seat frame 11, a support platform 12 is slidably connected to the lower end of the seat frame 11, a support leg 13 is fixedly connected to the lower end of the support platform 12, a linear motor 14 is rotatably connected to the middle right side of the seat frame 11, and the lower drive end of the linear motor 14 is rotatably connected to the upper left side of the support platform 12.

[0041] In this embodiment, the upper front and rear sides of the rotating support frame 21 are rotatably connected to the left front and rear sides of the seat frame 11, and the upper end of the leg lifting link 22 is rotatably connected to the middle of the left side of the seat frame 11.

[0042] In this embodiment, the outer periphery of the limiting slide rod 29 is slidably connected to the upper opening of the limiting slide block 27, the middle outer periphery of the limiting slide rod 28 is slidably connected to the middle opening of the rotating support frame 21, and the left outer periphery of the leg lifting slider 26 is slidably connected to the lower opening of the sliding guide plate 25.

[0043] Specifically, when the user needs to adjust the sitting posture to a reclining position, the controller activates linear motor 14 and linear motor 23. Linear motor 14 pushes the seat frame 11 to slide on the upper end of the support platform 12, while linear motor 23 pushes the rotating support frame 21 to flip upward on the left side of the seat frame 11 via the leg-lifting linkage 22. During the upward flipping of the left end of the rotating support frame 21, since the point on the upper end of the rotating support frame 21 fixed to the left side of the seat frame 11 is further to the left than the point on the upper end of the leg-lifting linkage 22 fixed to the left side of the seat frame 11, when the leg-lifting linkage 22 and the rotating support frame 21 rotate together, it will drive the leg-lifting slider 26 to slide upward on the right side of the rotating support frame 21. At this time, the leg-lifting slider 26 pulls the limiting slide rod 28 to slide upward in the middle groove of the rotating support frame 21, and the limiting slide rod 28 can pull the sliding guide plate 25 to rotate. The shaft 211 rotates inside the bushing 210, causing the lower end of the sliding guide plate 25 to rotate upwards and downwards. At this time, the upper end of the sliding guide plate 25 drives the limiting slide rod 29 to slide inside the limiting slide seat 27 and pushes the limiting slide seat 27 downwards. The limiting slide seat 27 pushes the sliding support frame 24 to slide downwards inside the rotating support frame 21. Through the cooperation of the seat mechanism 1 and the leg support mechanism 2, the user can raise their legs and lengthen their legs while adjusting from a sitting position to a lying position. The support area for the legs is increased, giving the user a better experience. Moreover, since the rotating support frame 21, the sliding support frame 24 and the leg lifting linkage 22 rotate in the same direction, the problem of the leather cover being stretched and wrinkled during the leg lifting process of traditional massage chairs is avoided because the leg pivot point is below the leather cover and the movement pivot point is inconsistent.

[0044] In this embodiment, the secondary support mechanism 4 includes a bevel gear disk 41. Multiple bevel gears 42 are evenly distributed on the lower outer periphery of the bevel gear disk 41. All bevel gears 42 mesh with the bevel gear disk 41. A threaded rod 43 is fixedly connected to the middle of each bevel gear 42. Multiple support blocks 44 are evenly distributed on the outer periphery of the threaded rod 43. A drive seat 45 is threadedly connected to the outer periphery of the end of the threaded rod 43 away from the bevel gear 42. A connecting seat 46 is fixedly connected to the end of the drive seat 45 away from the bevel gear 42. Guide grooves 47 are opened on both sides of the connecting seat 46 away from the drive seat 45. A mounting seat 48 is fixedly connected to the end of the connecting seat 46 away from the drive seat 45. A secondary pulley 49 is rotatably connected to the lower end of the mounting seat 48.

[0045] In this embodiment, the upper ends of the support blocks 44 are all fixedly connected to the lower ends of the support legs 13, the ends of the threaded rods 43 away from the bevel gear 42 are all rotatably connected to the five corners of the support legs 13, and the upper ends of the drive seats 45 are all slidably connected to the five corners of the support legs 13.

[0046] In this embodiment, the transmission mechanism 5 includes a gear ring 510, a second rotating shaft 53, a sun gear 511, and two arc-shaped gear plates 51. The middle of each arc-shaped gear plate 51 is meshed with a drive gear 52. The interior of each drive gear 52 is fixedly connected to the front and rear ends of the second rotating shaft 53. The outer periphery of the middle of the second rotating shaft 53 is fixedly connected with a second bevel gear 54. The lower end of the second bevel gear 54 is meshed with a third bevel gear 55. The middle of the third bevel gear 55 is fixedly connected with a third rotating shaft 56. The lower end of the third rotating shaft 56 is fixedly connected with a triangular disk 57. The lower end of the triangular disk 57 is evenly distributed with a fourth rotating shaft 58. The outer periphery of the fourth rotating shaft 58 is rotatably connected with planetary gears 59. Each planetary gear 59 meshes with the gear ring 510 and the sun gear 511. The middle of the sun gear 511 is fixedly connected with a fifth rotating shaft 512. The arc-shaped gear plates 51 are all connected to the seat frame 11 through a connecting shaft 6.

[0047] In this embodiment, the right end of the arc-shaped toothed plate 51 is rotatably connected to the lower end of the drive end of the linear motor 14, the middle part of the rotating shaft 512 is rotatably connected to the lower end opening of the support platform 12, the lower end of the rotating shaft 512 is fixedly connected to the upper end of the bevel gear disk 41, and the outer periphery of the toothed ring 510 is fixedly connected to the lower end of the inner side wall of the support platform 12.

[0048] Specifically, when the seat frame 11 slides on the upper end of the support platform 12, the connecting shaft 6 drives the arc-shaped toothed plate 51 to rotate, which in turn drives the bevel gear 54 to rotate via the drive gear 52 and the second rotating shaft 53. This, in turn, drives the triangular disk 57 to rotate via the third bevel gear 55 and the third rotating shaft 56. Furthermore, the fourth rotating shaft 58 and the planetary gears 59 drive the sun gear 511 to rotate at an accelerated speed. At this time, the fifth rotating shaft 512 drives the bevel gear disk 41 to rotate, which in turn drives the threaded rod 43 to rotate at an accelerated speed via the first bevel gear 42. This, in turn, drives the drive seat 45 and the connecting seat... 46 drives the auxiliary pulley 49 at the lower end of the mounting base 48 away from the main pulley mechanism 3, ultimately increasing the support area of ​​the entire support part. Through the cooperation of the transmission mechanism 5, the auxiliary support mechanism 4, the seat frame 11, and the connecting shaft 6, the support area of ​​the support part gradually increases as the user adjusts to a reclining position. When the support area of ​​the support part increases, the massage chair will not tip over due to the shift of the center of gravity when the user changes their reclining position after adjusting to a flat position, thus improving the safety of the user when using the massage chair.

[0049] It should be noted that the use of planetary gears 59 and gear rings 510 is to increase the transmission ratio and ensure that the number of rotations of the threaded rod 43 is sufficient, thereby ensuring that the auxiliary pulley 49 can be fully extended. When the seat frame 11 slides along the support platform 12, the connecting shaft 6 will drive the arc-shaped toothed plate 51 to move along an arc-shaped trajectory that matches the tooth surface of the drive gear 52, thereby ensuring that the tooth surface of the arc-shaped toothed plate 51 is always within the effective meshing area of ​​the drive gear 52, thus maintaining stable meshing between the two.

[0050] In this embodiment, the main pulley mechanism 3 includes five housings 31. The upper end of each housing 31 is rotatably connected to a mounting rod 32. The middle of each housing 31 is fixedly connected to a rotating shaft 33. The outer periphery of both ends of the rotating shaft 33 is rotatably connected to a pulley 34. The upper end of each housing 31 is slidably connected to a limiting slide rod 35. The lower end of each limiting slide rod 35 is fixedly connected to a brake pad 36. The upper outer periphery of each limiting slide rod 35 is fixedly connected to a limiting plate 37. The lower end of each limiting plate 37 is fixedly connected to a spring 38.

[0051] In this embodiment, the upper ends of the mounting rods 32 are all fixedly connected to the five corner openings of the support leg 13, the lower ends of the springs 38 are all fixedly connected to the upper sides of the housing 31, and the upper ends of the limiting slide rods 35 are all slidably connected to the inside of the guide groove 47.

[0052] Specifically, when the user adjusts to a reclining position, that is, during the extension of the connecting seat 46, the limiting slide bar 35 first slides in the guide groove 47. As the connecting seat 46 continues to slide, when the guide groove 47 is fully extended, the lower end of the connecting seat 46 abuts against the upper end of the limiting slide bar 35. At this time, the brake pad 36 presses against the pulley 34 to lock the pulley 34. Through the cooperation of the secondary support mechanism 4 and the main pulley mechanism 3, the user can still move the position of the massage chair in the first half of the adjustment process to a reclining position, while locking the position of the massage chair in the second half of the adjustment process. This ensures that the massage chair is locked after adjusting to a reclining position, thus guaranteeing both the convenience and safety of using the massage chair.

[0053] Working principle: When the user needs to adjust the sitting posture to a reclining position, the controller activates linear motor 14 and linear motor 23. Linear motor 14 pushes the seat frame 11 to slide on the upper end of the support platform 12, while linear motor 23 pushes the rotating support frame 21 to flip upward on the left side of the seat frame 11 via the leg-lifting linkage 22. During the upward flipping of the left end of the rotating support frame 21, since the point on the upper end of the rotating support frame 21 fixed to the left side of the seat frame 11 is further to the left than the point on the upper end of the leg-lifting linkage 22 fixed to the left side of the seat frame 11, when the leg-lifting linkage 22 and the rotating support frame 21 rotate together, it will drive the leg-lifting slider 26 to slide upward on the right side of the rotating support frame 21. At this time, the leg-lifting slider 26 pulls the limit slider 1. 28 slides upward within the central groove of the rotating support frame 21, while the limiting slide rod 28 pulls the sliding guide plate 25 to rotate within the bushing 210 via the rotating shaft 211, causing the lower end of the sliding guide plate 25 to rotate upward and downward. At this time, the upper end of the sliding guide plate 25 drives the limiting slide rod 29 to slide within the limiting slide seat 27 and pushes the limiting slide seat 27 downward. The limiting slide seat 27 then pushes the sliding support frame 24 to slide downward within the rotating support frame 21. Through the cooperation of the seat mechanism 1 and the leg support mechanism 2, the user can raise their legs and extend their leg length while adjusting from a sitting position to a lying position, increasing the leg support area and providing a better user experience. Furthermore, due to the rotating support... The rotation directions of the frame 21, sliding support frame 24, and leg-lifting linkage 22 are consistent, avoiding the problem of traditional massage chairs where the leg pivot point is below the leather sleeve during leg lifting, causing the leather sleeve to be stretched and wrinkled due to inconsistent movement pivot points. When the seat frame 11 slides on the upper end of the support platform 12, the connecting shaft 6 drives the arc-shaped toothed plate 51 to rotate, which in turn drives the bevel gear 54 to rotate via the drive gear 52 and the second rotating shaft 53. This, in turn, drives the triangular disk 57 to rotate via the third bevel gear 55 and the third rotating shaft 56. Furthermore, the fourth rotating shaft 58 and the planetary gear 59 drive the sun gear 511 to rotate at an accelerated speed. At this time, the fifth rotating shaft 512 drives the bevel gear disk 41 to rotate, which in turn drives the threaded rod 43 to rotate at an accelerated speed via the first bevel gear 42. This, in turn, drives the drive gear 511 to rotate at an accelerated speed. The seat 45 and connecting seat 46 drive the auxiliary pulley 49 at the lower end of the mounting seat 48 away from the main pulley mechanism 3, ultimately increasing the support area of ​​the entire support part. Through the cooperation of the transmission mechanism 5, the auxiliary support mechanism 4, the seat frame 11, and the connecting shaft 6, the support area of ​​the support part gradually increases as the user adjusts to a reclining position. When the support area increases, the massage chair will not tip over due to a shift in the center of gravity when the user changes position after adjusting to a flat reclining position, improving the safety of the user. When the user adjusts to a reclining position, as the connecting seat 46 extends, the limiting slide bar 35 will first slide in the guide groove 47. When the connecting seat 46 continues to slide, the guide groove 47 will slide out completely.The lower end of the connecting seat 46 abuts against the upper end of the limiting slide bar 35. At this time, the brake pad 36 presses against the pulley 34, locking the pulley 34. Through the cooperation of the secondary support mechanism 4 and the main pulley mechanism 3, the user can still move the massage chair during the first half of the adjustment to a reclining position, while locking the massage chair during the second half of the adjustment. This ensures that the massage chair is locked after adjusting to a reclining position, guaranteeing both convenience and safety when using the massage chair.

[0054] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A massage chair with linkage adjustment, characterized in that, include: The seating area includes a seat mechanism (1) and a leg support mechanism (2) for the user to sit and adjust their posture; The support part includes a main pulley mechanism (3), a secondary support mechanism (4), a transmission mechanism (5), and a connecting shaft (6), which are used to support the seating part and control the locking state of the seating part; A leg support mechanism (2) is fixedly installed on the left end of the seat mechanism (1), a transmission mechanism (5) is fixedly installed on the lower inner part of the seat mechanism (1), and a secondary support mechanism (4) is fixedly installed on the lower end of the seat mechanism (1). The leg support mechanism (2) includes a rotating support frame (21), a leg-lifting link (22) is provided at the middle left side of the rotating support frame (21), a linear motor (23) is rotatably connected at the middle right side of the leg-lifting link (22), a sliding support frame (24) is slidably connected inside the rotating support frame (21), a sliding guide plate (25) is slidably connected to the left side of the sliding support frame (24), and a limit slide (27) is fixedly connected to the upper inner front part of the sliding support frame (24). The upper end of the sliding guide plate (25) is rotatably connected to the second limiting slide rod (29), the lower end of the leg lifting link (22) is rotatably connected to the first limiting slide rod (28), the lower end of the leg lifting link (22) is fixedly connected to the leg lifting slider (26), the middle side of the rotating support frame (21) is fixedly connected to the bushing (210), the bushing (210) is rotatably connected to the rotating shaft (211), and the left end of the rotating shaft (211) is fixedly connected to the middle right side of the sliding guide plate (25); The seat mechanism (1) includes a seat frame (11), a support platform (12) is slidably connected to the lower end of the seat frame (11), a support leg (13) is fixedly connected to the lower end of the support platform (12), a linear motor (14) is rotatably connected to the middle right side of the seat frame (11), and the lower drive end of the linear motor (14) is rotatably connected to the upper left side of the support platform (12). The secondary support mechanism (4) includes a bevel gear disk (41). Multiple bevel gears (42) are evenly distributed on the lower outer periphery of the bevel gear disk (41). The multiple bevel gears (42) mesh with the bevel gear disk (41). A threaded rod (43) is fixedly connected to the middle of each bevel gear (42). Multiple support blocks (44) are evenly distributed on the outer periphery of the threaded rod (43). A drive seat (45) is threadedly connected to the outer periphery of the end of the threaded rod (43) away from the bevel gear (42). A connecting seat (46) is fixedly connected to the end of the drive seat (45) away from the bevel gear (42). Guide grooves (47) are opened on both sides of the connecting seat (46) away from the drive seat (45). A mounting seat (48) is fixedly connected to the end of the connecting seat (46) away from the drive seat (45). A secondary pulley (49) is rotatably connected to the lower end of the mounting seat (48). The transmission mechanism (5) includes a gear ring (510), a second rotating shaft (53), a sun gear (511), and two arc-shaped gear plates (51). Each arc-shaped gear plate (51) is meshed with a drive gear (52) at its center. The drive gears (52) are internally fixedly connected to the front and rear ends of the second rotating shaft (53). A second bevel gear (54) is fixedly connected to the outer periphery of the center of the second rotating shaft (53). A third bevel gear (55) is meshed with the lower end of the second bevel gear (54). The third bevel gear (55) is fixedly connected to the center of its center. A rotating shaft three (56) is fixedly connected. A triangular disk (57) is fixedly connected to the lower end of the rotating shaft three (56). A rotating shaft four (58) is evenly distributed at the lower end of the triangular disk (57). Planetary gears (59) are rotatably connected to the outer circumference of the rotating shaft four (58). The planetary gears (59) mesh with the gear ring (510) and the sun gear (511). A rotating shaft five (512) is fixedly connected to the middle of the sun gear (511). The arc-shaped toothed plates (51) are all connected to the seat frame (11) through the connecting shaft (6).

2. The massage chair with linkage adjustment according to claim 1, characterized in that, The upper front and rear sides of the rotating support frame (21) are rotatably connected to the left front and rear sides of the seat frame (11), and the upper end of the leg lifting link (22) is rotatably connected to the middle of the left side of the seat frame (11).

3. The massage chair with linkage adjustment according to claim 1, characterized in that, The outer periphery of the second limiting slide rod (29) is slidably connected to the upper opening of the limiting slide block (27), the middle outer periphery of the first limiting slide rod (28) is slidably connected to the middle opening of the rotating support frame (21), and the left outer periphery of the leg lifting slider (26) is slidably connected to the lower opening of the sliding guide plate (25).

4. The massage chair with linkage adjustment according to claim 1, characterized in that, The main pulley mechanism (3) includes five housings (31). The upper end of each housing (31) is rotatably connected to a mounting rod (32). The middle of each housing (31) is fixedly connected to a rotating shaft (33). The outer periphery of each of the two ends of the rotating shaft (33) is rotatably connected to a pulley (34). The upper end of each housing (31) is slidably connected to a limiting slide rod (35). The lower end of each limiting slide rod (35) is fixedly connected to a brake pad (36). The upper periphery of each limiting slide rod (35) is fixedly connected to a limiting plate (37). The lower end of each limiting plate (37) is fixedly connected to a spring (38).

5. A massage chair with linkage adjustment according to claim 4, characterized in that, The upper ends of the mounting rods (32) are all fixedly connected to the five corner openings of the support leg (13), the lower ends of the springs (38) are all fixedly connected to the upper sides of the housing (31), and the upper ends of the limiting slide rods (35) are all slidably connected to the inside of the guide groove (47).

6. A massage chair with linkage adjustment according to claim 1, characterized in that, The upper end of each support block (44) is fixedly connected to the lower end of each support leg (13). The end of each threaded rod (43) away from the bevel gear (42) is rotatably connected to the five corners of the support leg (13). The upper end of each drive seat (45) is slidably connected to the five corners of the support leg (13).

7. A massage chair with linkage adjustment according to claim 6, characterized in that, The right end of the arc-shaped toothed plate (51) is rotatably connected to the lower end of the drive end of the linear motor (14). The middle part of the rotating shaft (512) is rotatably connected to the lower end opening of the support platform (12). The lower end of the rotating shaft (512) is fixedly connected to the upper end of the bevel gear plate (41). The outer periphery of the toothed ring (510) is fixedly connected to the lower end of the inner side wall of the support platform (12).

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