Three-section guide rail massage chair

Abstract

The application discloses a three-section guide rail massage chair, which is characterized by the lifting mechanism driving the lifting guide rail to ascend or descend relative to the seat frame. When the lifting guide rail is lifted, it is aligned with the back guide rail and the seat guide rail, so that the massage core can smoothly reciprocate on the chair frame, ensuring that the massage core can smoothly implement the massage function to massage the human back, hips and / or thighs. When the lifting guide rail sinks, it is separated from the back guide rail and the seat guide rail, and at the same time, the first push rod is retracted to drive the back frame to rotate relative to the seat frame, so that the angle between the back frame and the seat frame is increased, thereby improving the human body massage comfort, and the human body can also be massaged by stretching the muscles. At the same time, due to the increase of the angle between the back frame and the seat frame, the height and length of the massage chair back frame are reduced, thereby improving the cabinet volume utilization rate and reducing the transportation cost of the massage chair.

Description

Technical Field

[0001] This invention relates to the field of massage technology, specifically to a three-section guide rail massage chair. Background Technology

[0002] Existing massage chair guide rails mainly consist of straight guide rails and L-shaped guide rails. Straight guide rails connect the seat and backrest in segments, allowing the massage mechanism to move only up and down the backrest or massage only the seat. L-shaped guide rails allow the massage mechanism to massage from the head to the buttocks, but the angle between the backrest and seat is a fixed L-shape, limiting the user's massage experience to a fixed angle. The backrest and seat angle cannot be adjusted, hindering proper stretching and resulting in insufficient comfort. Current technologies, while allowing for seat and backrest angle adjustments, cannot achieve a full-range massage from the back to the seat.

[0003] Furthermore, because the massage chair's guide rails are fixed, there are drawbacks such as the backrest height and length affecting the cabinet's volume utilization. Additionally, the massage mechanism operates on the backrest guide rails, and the fixed angle and posture of the massage chair cannot be changed, making it impossible to perform stretching or other massage techniques. Therefore, this application is hereby submitted. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by proposing a three-section guide rail massage chair. This solves the problems of fixed guide rails affecting the cabinet volume utilization due to the impact of back height and length, and the inability to achieve stretching and other massage functions because the massage mechanism operates on the back guide rail and the fixed angle and posture of the massage chair cannot be changed.

[0005] This invention provides a three-section guide rail massage chair, including a base, a chair frame, and a massage mechanism. The chair frame includes a seat frame and a back frame. The seat frame is connected to the base and has a seat guide rail. The back frame has a back guide rail and is hinged to the seat frame. A first push rod is provided between the back frame and the seat frame, which pushes the back frame to rotate relative to the seat frame. The chair also includes a lifting mechanism and a lifting guide rail provided on the lifting mechanism, which are located between the seat frame and the back frame.

[0006] The lifting mechanism drives the lifting guide rail to rise and fall. When the lifting guide rail is raised and the back frame rotates to a position away from the seat frame, the lifting guide rail is connected to the seat guide rail and the back guide rail, so that the massage mechanism can reciprocate between the seat frame, the lifting guide rail and the back frame.

[0007] When the lifting mechanism drives the lifting guide rail to sink, the back frame can rotate toward the seat frame so that the back guide rail is close to the seat guide rail. When the lifting guide rail is disengaged from the seat guide rail and the back guide rail, the first push rod is extended and retracted, and the back frame can rotate around the seat frame to achieve a secondary back-carrying function.

[0008] The seat frame is also provided with a sliding groove, and the lifting guide rail cooperates with the sliding groove. The lifting mechanism also includes an eccentric wheel, a drive shaft and a drive device. The drive device drives the eccentric wheel to rotate through the drive shaft. The eccentric wheel has an arc surface at its far end away from the drive shaft. The arc surface has the same radius as the lifting guide rail when it contacts it, so that the lifting guide rail is aligned with the back guide rail and the seat guide rail after it is raised.

[0009] By adopting the above technical solution, the present invention can achieve the following technical effects: Compared with the prior art, the three-section guide rail massage chair of the present invention, through the setting of a lifting mechanism to drive the lifting guide rail, makes the lifting guide rail rise or fall relative to the seat frame. When the lifting guide rail is raised, it aligns with the back rail and seat rail, allowing the massage mechanism to move smoothly back and forth on the chair frame, ensuring that the massage mechanism can smoothly perform the massage function to massage the back, buttocks, and / or thighs. When the lifting guide rail is lowered, it disengages from the back rail and seat rail, and simultaneously the first push rod retracts, causing the back frame to rotate relative to the seat frame, increasing the angle between the back frame and the seat frame, thereby improving the massage comfort and providing a stretching massage. Furthermore, because the angle between the back frame and the seat frame is increased, the height and length of the massage chair back frame are reduced, thereby improving the utilization rate of the cabinet volume and reducing the transportation cost of the massage chair. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0011] Figure 1 A schematic diagram of the structure of a three-section guide rail massage chair according to an embodiment of the present invention is shown.

[0012] Figure 2 It is illustrated Figure 1 A diagram illustrating the split structure in the diagram;

[0013] Figure 3 and Figure 4 It is illustrated Figure 1 A schematic diagram of the lifting mechanism in the diagram;

[0014] Figure 5 It is illustrated Figure 1 A schematic diagram of the eccentric wheel in the diagram;

[0015] Figure 6 It is illustrated Figure 1 A schematic diagram of the cross-section comparing the rotation of the eccentric wheel in the middle;

[0016] Figure 7 and Figure 8 It is illustrated Figure 1 A schematic diagram of the lifting guide rail in the rising and falling states;

[0017] Figure 9 and Figure 10 It is illustrated Figure 1 A three-dimensional structural diagram illustrating the raising and lowering of the lifting guide rail;

[0018] Figure Labels

[0019] 1-Base, 2-Chair frame, 3-Massage mechanism, 21-Seat frame, 22-Back frame, 211-Seat guide rail, 221-Back guide rail, 4-First push rod, 5-Lifting mechanism, 6-Lifting guide rail, 7-Second push rod, 51-Eccentric wheel, 52-Drive shaft, 53-Drive device, L-Arc surface, 11-Arc guide rail, 23-Roller, 54-Lifting slide bar, 212-Slide groove, 214-Spring fixing seat, 215-Spring, 81-Detector, 82-Code disk. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] Combined with appendix Figure 1-10 As shown, this embodiment of the invention provides a three-section guide rail massage chair, including a base 1, a chair frame 2, and a massage mechanism 3. The chair frame 2 includes a seat frame 21 and a back frame 22. The seat frame 21 is connected to the base 1 and is provided with a seat guide rail 211. The back frame 22 is provided with a back guide rail 221 and is hinged to the seat frame 21. A first push rod 4 is provided between the back frame 22 and the seat frame 21, which pushes the back frame 22 to rotate relative to the seat frame 21. The chair also includes a lifting mechanism 5 and a lifting guide rail 6 provided on the lifting mechanism 5. The lifting mechanism 5 and the lifting guide rail 6 are located between the seat frame 21 and the back frame 22.

[0022] The lifting mechanism 5 drives the lifting guide rail 6 to rise and fall. When the lifting guide rail 6 rises and the back frame 22 rotates to a position away from the seat frame 21, the lifting guide rail 6 is connected to the seat guide rail 211 and the back guide rail 221, so that the massage core 3 can reciprocate between the seat frame 21, the lifting guide rail 6 and the back frame 22.

[0023] When the lifting mechanism 5 drives the lifting guide rail 6 to sink, the back frame 22 can rotate toward the seat frame 21 so that the back guide rail 221 is close to the seat guide rail 211. When the lifting guide rail 6 is disengaged from the seat guide rail 211 and the back guide rail 221, the first push rod 4 is extended and retracted, and the back frame 22 can rotate around the seat frame 21 to achieve a secondary back-carrying function.

[0024] The seat frame 21 is also provided with a slide groove 212, and the lifting guide rail 6 cooperates with the slide groove 212. The lifting mechanism 5 also includes an eccentric wheel 51, a drive shaft 52 and a drive device 53. The drive device 53 drives the eccentric wheel 51 to rotate through the drive shaft 52. The eccentric wheel 51 has an arc surface L at its far end away from the drive shaft 52. The arc surface L has the same radius as the lifting guide rail 6 when it contacts the lifting guide rail 6, so that the lifting guide rail 6 is aligned with the back guide rail 221 and the seat guide rail 211 after it is raised.

[0025] In other words, the three-section guide rail massage chair of this invention uses a lifting mechanism to drive the lifting guide rail, causing it to rise or fall relative to the seat frame. When the lifting guide rail is raised, it aligns with the backrest guide rail and the seat guide rail, allowing the massage mechanism to move smoothly back and forth on the chair frame. This ensures the massage mechanism can smoothly perform its massage function, massaging the back, buttocks, and / or thighs. When the lifting guide rail is lowered, it disengages from the backrest guide rail and the seat guide rail. Simultaneously, the first push rod retracts, causing the backrest frame to rotate relative to the seat frame, increasing the angle between the backrest frame and the seat frame. This improves massage comfort and allows for stretching massage. Furthermore, the increased angle between the backrest frame and the seat frame reduces the height and length of the massage chair's backrest, thereby improving cabinet volume utilization and reducing transportation costs.

[0026] It should be noted that, as Figure 7 and 8 As shown, the lower end of the lifting guide rail 6 is provided with a protrusion 61 so as to cooperate with the arc surface L of the eccentric wheel, so that the massage mechanism can move smoothly on the chair frame.

[0027] It should be noted that, as Figure 7 and 8As shown, in order to reduce the stress on the guide rail lifting mechanism and extend the service life of the lifting mechanism, the length of the lifting guide rail 6 is less than the length of the seat guide rail 211, and the length of the seat guide rail 211 is less than the length of the back guide rail 221.

[0028] Furthermore, in order to reduce the number of guide rails and lower equipment costs, in one example, the length of the lifting guide rail is increased and the seat guide rail 211 is removed. In this way, the lifting mechanism 5 drives the lifting guide rail 6 to rise and align with the back guide rail 221, so that the massage core 3 reciprocates on the back guide rail 221, the lifting guide rail 6 and the seat guide rail 211 to massage the buttocks and / or thighs of the human body.

[0029] Furthermore, in one example, the seat 21 is reciprocally slidably mounted on the base 1, and the lifting mechanism 5 is mounted on the seat 21.

[0030] Furthermore, in one instance, such as Figure 1 As shown, the base 1 is equipped with an arc-shaped guide rail 11, and the side end of the chair frame 2 is equipped with rollers 23 that cooperate with the arc-shaped guide rail 11. A second push rod 7 is also provided between the base 1 and the chair frame 2. By extending and retracting the second push rod 7, the rollers 23 reciprocate within the arc-shaped guide rail 11 to achieve reciprocating sliding of the chair frame 2 relative to the base 1. In this way, the chair frame can be tilted back under the control of the second push rod to achieve a zero-gravity function. At the same time, in conjunction with the first push rod and the lifting mechanism, when the lifting mechanism drives the lifting guide rail to descend, the first push rod can drive the back frame to continue to rotate closer to the seat frame, thereby increasing the angle between the back frame and the seat frame, thus improving the comfort of the massage and providing a stretching massage. At the same time, due to the increased angle between the back frame and the seat frame, the height and length of the massage chair back frame are reduced, thereby improving the utilization rate of the cabinet volume and reducing the transportation cost of the massage chair.

[0031] Furthermore, in one instance, such as Figure 5 and 6 As shown, to improve the stability of the alignment between the lifting guide rail, the back guide rail, and the seat guide rail, the arc surface L and the drive shaft 52 are concentric circles with the same center. Specifically, the drive device 53 drives the drive shaft 52 to rotate, which in turn drives the eccentric wheel 51 to rotate. In this way, the radius of the arc surface L on the eccentric wheel 51 when it contacts the lifting guide rail 6 is the same, so that even if the drive shaft 52 rotates slightly off-center, it will not affect the alignment of the lifting guide rail 6 with the back guide rail 221 and the seat guide rail 211. The massage mechanism 3 can then smoothly reciprocate on the entire chair frame 2 to massage the human body and improve the user experience.

[0032] Furthermore, in one instance, such as Figure 3 and 4As shown, the lifting mechanism 5 also includes a lifting slide bar 54, the lifting guide rail 5 is fixed on the lifting slide bar 54, and the lifting slide bar 54 passes through the slide groove 212 so that the lifting guide rail 6 moves up and down in the slide groove 212;

[0033] The eccentric wheel 51 is eccentrically fixed to both ends of the drive shaft 52 and is correspondingly arranged below the lifting guide rail 6. The drive device 53 is arranged on the seat 21 and drives the drive shaft 52 to rotate, thereby causing the eccentric wheel 51 to rotate and push the lifting guide rail 6 to rise or fall.

[0034] Furthermore, in one instance, such as Figure 3 As shown, in order to ensure that the lifting mechanism 5 can stably and quietly lower the lifting guide rail 6, a spring fixing seat 214 and a spring 215 are also provided on the frame 21. One end of the spring 215 is connected to the spring fixing seat 214, and the other end is connected to the lower end of the lifting slide rod 54, so that when the eccentric wheel 51 rotates, it pulls the lifting slide rod 54 down, thereby lowering the lifting guide rail 6. This also prevents the lifting guide rail 6 from falling directly and causing a collision.

[0035] Furthermore, in one instance, such as Figure 4 As shown, in order to more accurately align the driving lifting guide rail 6 with the seat guide rail 211 and the back guide rail 221, a detection device is also included. The detection device includes a detector 81 and an encoder 82. The detection sensor 81 is disposed on the driving device 53, and the encoder 82 is disposed on the driving shaft 52 corresponding to the detector 81. The driving device 53 drives the driving shaft 52 to rotate, and the detector 81 counts the number of rotations of the driving shaft 52 according to the encoder 82 to accurately control the rotation of the eccentric wheel 51.

[0036] Furthermore, in one example, a control device is also included, which is disposed on the base. The control device controls the massage mechanism to reciprocate on the back frame and / or seat frame, and controls the extension and retraction of the first push rod and the second push rod, and controls the lifting mechanism to drive the lifting guide rail to rise or fall.

[0037] The following detailed explanation of the installation relationship and working principle of the massage chair of the present invention will be provided through specific examples.

[0038] like Figure 1-10As shown, the massage chair includes a chair frame 2, a base 1, and a massage mechanism 3. The base 1 is provided with an arc-shaped guide rail 11. The side end of the chair frame 2 is provided with rollers 23 that cooperate with the arc-shaped guide rail 11. The chair frame 2 includes a seat frame 21 and a back frame 22. The back frame 22 is hinged to the seat frame 21. The seat frame 21 is connected to the base 1. The seat frame 21 is provided with a seat guide rail 211. The back frame 22 is provided with a back guide rail 221. A first push rod 4 is provided between the back frame 22 and the seat frame 21. The first push rod 4 pushes the back frame 22 to rotate relative to the seat frame 21. A second push rod 7 is also provided between the base 1 and the chair frame 2. By extending and retracting the second push rod 7, the rollers 23 reciprocate within the arc-shaped guide rail 11 to achieve reciprocating sliding of the chair frame 2 relative to the base 1. It also includes a lifting mechanism 5 and a lifting guide rail 6 disposed on the lifting mechanism 5. The lifting mechanism 5 and the lifting guide rail 6 are disposed between the seat frame 21 and the back frame 22. The seat frame 21 is also provided with a sliding groove 212. The lifting guide rail 6 cooperates with the sliding groove 212. The lifting mechanism 5 also includes an eccentric wheel 51, a drive shaft 52, a drive device 53, and a lifting slide rod 54. The lifting guide rail 6 is fixed on the lifting slide rod 54. The lifting slide rod 54 passes through the sliding groove 212, allowing the lifting guide rail 6 to move up and down within the sliding groove 212. The eccentric wheel 51 is eccentrically fixed to both ends of the drive shaft 52 and is correspondingly disposed below the lifting guide rail 6. The drive device 53 is disposed on the seat frame 21 and drives the drive shaft 52 to rotate, thereby driving the eccentric wheel 51 to rotate and push the lifting guide rail 6 to rise or fall. The driving device 53 drives the eccentric wheel 51 to rotate via the driving shaft 52; the eccentric wheel 51 has an arc surface L at its far end away from the driving shaft 52, and the arc surface L has the same radius as the lifting guide rail 6 when it contacts the drive shaft 52 (e.g., Figure 5 and 6 (As shown), so that after the lifting guide rail 6 is raised, it aligns with the back guide rail 221 and the seat guide rail 211. The lifting guide rail 6 is interconnected with the seat guide rail 211 and the back guide rail 221, allowing the massage mechanism 3 to reciprocate between the seat frame 21, the lifting guide rail 6, and the back frame 22. Figure 9 As shown; the frame 21 is also equipped with a spring fixing seat 214 and a spring 215. One end of the spring 215 is connected to the spring fixing seat 214, and the other end is connected to the lower end of the lifting slide rod 54, so that when the eccentric wheel 51 rotates, it pulls the lifting slide rod 54 down, thereby driving the lifting guide rail 6 down. Figure 10As shown, when the lifting mechanism 5 drives the lifting guide rail 6 to sink, the back frame 22 can rotate toward the seat frame 21, causing the back guide rail 221 to approach the seat guide rail 211. When the lifting guide rail 6 disengages from the seat guide rail 211 and the back guide rail 221, the first push rod 4 extends and retracts, and the back frame 22 can rotate around the hinge point with the seat frame 21 to achieve a secondary backrest function. Figure 4 As shown, it also includes a detection device, which includes a detector 81 and a code disk 82. The detection sensor 81 is disposed on the drive device 53, and the code disk 82 is disposed on the drive shaft 52 corresponding to the detector. The drive device 53 drives the drive shaft 52 to rotate, and the detector 81 counts the number of rotations of the drive shaft 52 according to the code disk 82 to accurately control the rotation of the eccentric wheel 51.

[0039] Specifically, eccentric wheel 51, as Figure 5 As shown, the arc surface L is a concentric circle centered on the fulcrum O1 (concentric with the drive shaft) with radius R. Its function is to eliminate dimensional deviations related to the drive device and the encoder 82, thereby ensuring that the lifting guide rail 6 is aligned with the seat guide rail 211 and the back guide rail 221 when it is raised. Figure 7 As shown.

[0040] Working principle description: 1. The assembled guide rails form a single unit, and the eccentric wheel 51 rotates to the desired position. Figure 5 When the position is reached, after the encoder 82 detects the signal, the drive stops, and the lifting guide rail 6 rises to the top of the slide 212 (e.g., Figure 7 The backrest guide rail 221 is connected to the lifting guide rail 6 and the seat guide rail 211 as a whole. The massage mechanism 3 can move back and forth along the assembled guide rail from the neck to the buttocks, realizing the L-shaped guide rail full-body massage function, as detailed below. Figure 9 As shown.

[0041] 2. The lifting mechanism 5 drives the lifting guide rail 6, causing the eccentric wheel 51 to rotate to the desired position. Figure 6 When the position is reached, after the encoder 82 detects the signal, the drive stops, and the lifting guide rail 6 descends to the lowest position B of the slide groove 212 (e.g., Figure 8 The back frame 22 rotates around the point where it intersects with the seat frame 21, achieving an angular change between the back frame 22 and the seat frame 21, specifically as follows: Figure 10 As shown.

[0042] In other words, the three-section guide rail massage chair of this invention uses a lifting mechanism to drive the lifting guide rail, causing it to rise or fall relative to the seat frame. When the lifting guide rail is raised, it aligns with the backrest guide rail and the seat guide rail, allowing the massage mechanism to move smoothly back and forth on the chair frame. This ensures the massage mechanism can smoothly perform its massage function, massaging the back, buttocks, and / or thighs. When the lifting guide rail is lowered, it disengages from the backrest guide rail and the seat guide rail. Simultaneously, the first push rod retracts, causing the backrest frame to rotate relative to the seat frame, increasing the angle between the backrest frame and the seat frame. This improves massage comfort and allows for stretching massage. Furthermore, the increased angle between the backrest frame and the seat frame reduces the height and length of the massage chair's backrest, thereby improving cabinet volume utilization and reducing transportation costs.

[0043] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0044] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A three-section guide rail massage chair, comprising a base, a chair frame, and a massage mechanism, characterized in that, The chair frame includes a seat frame and a back frame. The seat frame is connected to the base. The seat frame is provided with a seat guide rail, and the back frame is provided with a back guide rail. The back frame is also hinged to the seat frame. A first push rod is provided between the back frame and the seat frame, and the first push rod pushes the back frame to rotate relative to the seat frame. The chair frame also includes a lifting mechanism and a lifting guide rail provided on the lifting mechanism. The lifting mechanism and the lifting guide rail are located between the seat frame and the back frame. The lifting mechanism drives the lifting guide rail to rise and fall. When the lifting guide rail is raised and the back frame rotates to a position away from the seat frame, the lifting guide rail is connected to the seat guide rail and the back guide rail, so that the massage mechanism can reciprocate between the seat frame, the lifting guide rail and the back frame. When the lifting mechanism drives the lifting guide rail to sink, the back frame can rotate toward the seat frame so that the back guide rail is close to the seat guide rail. When the lifting guide rail is disengaged from the seat guide rail and the back guide rail, the first push rod is extended and retracted, and the back frame can rotate around the seat frame to achieve a secondary back-carrying function. The seat frame is also provided with a sliding groove, and the lifting guide rail cooperates with the sliding groove. The lifting mechanism also includes an eccentric wheel, a drive shaft, and a drive device. The drive device drives the eccentric wheel to rotate through the drive shaft. The eccentric wheel has an arc surface at its far end away from the drive shaft. The arc surface has the same radius as the lifting guide rail when it contacts the lifting guide rail, so that the lifting guide rail is aligned with the back guide rail and the seat guide rail after it is raised. The eccentric wheel is eccentrically fixed to both ends of the drive shaft and is correspondingly positioned below the lifting guide rail. The drive device is mounted on the frame and drives the drive shaft to rotate, thereby causing the eccentric wheel to rotate and push the lifting guide rail to rise or fall.

2. A three-section guide rail massage chair according to claim 1, characterized in that, The seat frame is slidably mounted on the base, and the lifting mechanism is mounted on the seat frame.

3. A three-section guide rail massage chair according to claim 1, characterized in that, The base is provided with an arc-shaped guide rail, and the side end of the chair frame is provided with a roller that cooperates with the arc-shaped guide rail. A second push rod is also provided between the base and the chair frame. By extending and retracting the second push rod, the roller reciprocates within the arc-shaped guide rail to realize the reciprocating sliding of the chair frame relative to the base.

4. A three-section guide rail massage chair according to claim 1, characterized in that, The length of the lifting guide rail is less than the length of the seat guide rail, and the length of the seat guide rail is less than the length of the back guide rail.

5. A three-section guide rail massage chair according to claim 1, characterized in that, The arc surface and the drive shaft are concentric circles with the same center.

6. A three-section guide rail massage chair according to claim 1, characterized in that, The lifting mechanism also includes a lifting slide bar, and the lifting guide rail is fixed on the lifting slide bar. The lifting slide bar passes through the slide groove, causing the lifting guide rail to move up and down within the slide groove.

7. A three-section guide rail massage chair according to claim 6, characterized in that, The frame is provided with a spring fixing seat and a spring. One end of the spring is connected to the spring fixing seat, and the other end is connected to the lower end of the lifting slide rod, so that when the eccentric wheel rotates, it pulls the lifting slide rod down, thereby driving the lifting guide rail down.

8. A three-section guide rail massage chair according to claim 1, characterized in that, It also includes a detection device, which includes a detector and a code disk. The detector is mounted on the drive device, and the code disk is mounted on the drive shaft corresponding to the detector. The drive device drives the drive shaft to rotate, and the detector counts the number of rotations of the drive shaft according to the code disk to accurately control the rotation of the eccentric wheel.

9. A three-section guide rail massage chair according to claim 3 or 8, characterized in that, It also includes a control device, which is disposed on the base. The control device controls the massage mechanism to reciprocate on the back frame and / or seat frame, and controls the extension and retraction of the first push rod and the second push rod, and controls the lifting mechanism to drive the lifting guide rail to rise or fall.

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