Massage chair with multi-link sliding and angle adjustment

Abstract

The present invention provides a multi-link type massage chair with coordinated sliding and angle adjustment, comprising: a base frame, the base frame including a main body mounting frame and a slide; a seat frame, the seat frame being symmetrically provided with hinge structures on opposite sides along the left and right directions of the massage chair, the hinge structures being coordinated with the slide movement; a backrest frame, the backrest frame being rotatably connected to the seat frame via a hinge structure; a multi-link mechanism, the multi-link mechanism including a first link, a second link, a third link, and a fourth link, the first swing limiter and the second swing limiter jointly defining the relative swing range between the third link and the fourth link; and a drive device, the drive device being used to drive the seat frame to move forward and backward along the slide. The present invention can cause the seat frame to slide in the forward and backward directions of the massage chair and simultaneously adjust the swing angles of the seat frame and the backrest frame by only using a single drive device. The seat frame and the backrest frame are more reliable in supporting the user of the massage chair, and the posture changes of the seat frame and the backrest frame are more stable and smooth.

Description

Technical Field

[0001] The present invention relates to the technical field of massage equipment, and in particular to a multi-link massage chair with coordinated sliding and angle adjustment. Background Art

[0002] The common massage chairs on the market today require two drive motors to adjust the angles of the seat frame and backrest frame, and another drive motor is needed for the forward sliding of the backrest frame and seat frame. It seems that three drive motors are needed to complete the angle adjustment and forward and backward sliding movements. Moreover, the massage chair products on the market still require forward sliding and then adjusting the angle, which reduces the sense of timeliness of the massage for the user. At the same time, the cost of massage that requires multiple drive motors is generally high, which has led to the fact that massage chairs cannot be popularized. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a multi-link massage chair with coordinated sliding and angle adjustment. Using a single drive device, the seat frame slides forward and backward, while simultaneously adjusting the swing angles of the seat frame and backrest, stretching and contracting the user's waist and abdominal muscles. The seat frame and backrest provide greater reliability in supporting the user, and their position changes are smoother and more stable. This reduces the number of power sources required for the massage chair, simplifies the overall structure, significantly reduces manufacturing and maintenance costs, and enhances the massage experience.

[0004] In order to solve the above technical problems, the present invention provides a multi-link massage chair with coordinated sliding and angle adjustment, comprising:

[0005] The base frame includes a main body mounting frame, and the main body mounting frame is symmetrically provided with slideways on two opposite sides of the left and right directions of the massage chair, and the slideways extend along the front and back directions of the massage chair;

[0006] The seat frame is symmetrically provided with hinge structures on the two opposite sides of the massage chair in the left and right directions. The hinge structures on both sides correspond to the slideways on both sides and move in coordination.

[0007] The backrest frame is rotatably connected to the seat frame via a hinge structure on two opposite sides of the massage chair in the left and right directions;

[0008] The multi-link mechanism includes a first link, a second link, a third link and a fourth link, wherein both ends of the first link, the second link, the third link and the fourth link in the extending direction are respectively a fixed hinge end and a movable swing end, the third link has a first swing limit portion abutting and cooperating with the fourth link, the fourth link has a second swing limit portion abutting and cooperating with the third link, the first swing limit portion and the second swing limit portion jointly define a relative swing range between the third link and the fourth link, the rod body of the first link is hinged to the sitting frame, the fixed hinge end of the first link is hinged to the main body mounting frame, the movable swing end of the first link is hinged to the movable swing end of the second link, the fixed hinge end of the second link is hinged to the backrest frame, the fixed hinge end of the third link is hinged to the fixed hinge end of the second link, the movable swing end of the third link is hinged to the movable swing end of the fourth link, and the fixed hinge end of the fourth link is hinged to the main body mounting frame;

[0009] The driving device is used to drive the seat frame to move forward and backward along the slide. When the hinged structure moves to the extreme movement position relative to the slide, the third connecting rod moves to the extreme swing position relative to the fourth connecting rod.

[0010] Preferably, the slide is a sliding groove opening toward the seat frame, and the hinged structure includes a hinge shaft hingedly connecting the seat frame and the backrest frame together, and the hinge shaft is provided with a running wheel rollingly arranged in the sliding groove.

[0011] Preferably, the seat frame has a first ear plate component at a position close to the backrest frame, and the backrest frame has a second ear plate component at a position close to the seat frame, and the first ear plate component is hinged to the second ear plate component via a hinge shaft.

[0012] Preferably, the seat frame is provided with an angle adjustment hole extending along a circular arc trajectory, the center of the circle corresponding to the angle adjustment hole is located on the axis of the hinge shaft, and the backrest frame is provided with an adjustment wheel, which moves with the backrest frame and is always located in the angle adjustment hole.

[0013] Preferably, there are two multi-link mechanisms, which are symmetrically arranged on opposite sides of the seat frame along the left and right directions of the massage chair, and the first links of the two multi-link mechanisms are connected to each other through a synchronization rod.

[0014] Preferably, the main body mounting frame includes a cushion base frame, and the cushion base frame is symmetrically provided with support frames on two opposite sides in the left and right directions of the massage chair, and the support frames on both sides correspond to and are correspondingly connected with the slideways on both sides.

[0015] Preferably, a reinforcing rod is provided between the pad base frame and the supporting frame.

[0016] Preferably, the reinforcing rod is arranged on the side of the cushion base frame facing the front of the massage chair, and the fixed hinge end of the first connecting rod is hinged to the cushion base frame; when the first connecting rod moves to the extreme swing position relative to the cushion base frame, the reinforcing rod and the first connecting rod abut against each other.

[0017] Preferably, the massage chair further comprises a massage mechanism, which comprises a flexible track and a massage movement, wherein the flexible track is laid from the backrest frame to the seat frame, and the massage movement is arranged to move on the flexible track.

[0018] Preferably, the driving device includes a first mounting bracket provided on the main body mounting bracket, a second mounting bracket provided on the sitting frame, and a telescopic driver respectively hinged to the first mounting bracket and the second mounting bracket.

[0019] As described above, the multi-link massage chair with coordinated sliding and angle adjustment of the present invention has the following beneficial effects: when the driving device drives the seat frame to move toward the front and upper part of the massage chair, on the one hand, since the seat frame is symmetrically provided with hinge structures on the two opposite sides along the left and right directions of the massage chair, and the hinge structures on both sides correspond to the slides on both sides one by one and move in coordination, the seat frame slides along the extension direction of the slide through the hinge structure; on the other hand, since the rod body of the first link is hinged to the seat frame, the fixed hinge end of the first link is hinged to the main mounting frame, the first link swings in the counterclockwise direction with its fixed hinge end as the swing center, and then the seat frame swings in the clockwise direction relative to the base frame with the hinge structure as the swing center, and the swing angle of the seat frame relative to the base frame is recorded as the first adjustment angle. Because the movable swinging end of the first connecting rod is hingedly connected to the movable swinging end of the second connecting rod, and the fixed hinged end of the second connecting rod is hingedly connected to the backrest frame, the backrest frame swings clockwise relative to the sitting frame with the hinge structure as the swinging center. The swinging angle of the backrest frame relative to the base frame is recorded as the second adjustment angle, and the second adjustment angle is greater than the first adjustment angle. In other words, as the sitting frame and backrest frame swing clockwise to tilt the massage chair user, the angle between the backrest frame and the sitting frame increases, thereby increasing the angle between the user's body and legs. This gradually and evenly distributes the body's gravity throughout the massage chair, allowing the body to gradually enter a more natural and comfortable state of relaxation, effectively releasing physical and mental stress and relieving fatigue in the waist and back. At the same time, the heart and knees are aligned, effectively reducing cardiac pressure and promoting blood circulation. When the drive device drives the sitting frame toward the rear and lower back of the massage chair, the massage chair returns to its original state. If the drive device drives the seat frame to perform periodic reciprocating motion, the massage chair can also contract and expand the user's waist and abdominal muscles, thereby achieving the dual effects of body massage and exercise. Furthermore, the third link has a first swing limiter that abuts and engages with the fourth link, and the fourth link has a second swing limiter that abuts and engages with the third link. The first swing limiter and the second swing limiter jointly define the relative swing range between the third and fourth links. When the hinge structure moves to the extreme movement position relative to the slideway, the third link moves to the extreme swing position relative to the fourth link. This arrangement allows the third and fourth links to assist in supporting the seat frame when the massage chair is in its original position or in its extreme tilting position, and also ensures smoother movement of the various mechanisms of the massage chair during changes in posture. Therefore, the multi-link, sliding, and angle-adjustable massage chair of the present invention utilizes a single drive device to cause the seat frame to slide forward and backward, while simultaneously adjusting the swing angles of the seat frame and backrest frame, thereby stretching and contracting the user's waist and abdominal muscles. In addition, the seat frame and the backrest frame are more reliable in supporting the massage chair user, and the position changes of the seat frame and the backrest frame are more stable and smooth.Therefore, the massage chair of the present invention can reduce the number of power sources of the massage chair, simplify the overall structure of the massage chair, greatly save the manufacturing and maintenance costs of the massage chair, and improve the massage experience of the massage chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A diagram showing a first usage state of the multi-link sliding and angle coordinated adjustment massage chair of the present invention;

[0021] Figure 2 Shown is a connection diagram of the seat frame, backrest frame and multi-link mechanism;

[0022] Figure 3 Display as Figure 2 Enlarged view of part A;

[0023] Figure 4 Shown is a schematic diagram of a multi-link mechanism;

[0024] Figure 5 The figure shows the second usage state of the multi-link massage chair with coordinated sliding and angle adjustment according to the present invention.

[0025] Component number description

[0026] 1 Base frame

[0027] 11 Main body mounting bracket

[0028] 111 base frame

[0029] 112 support frame

[0030] 113 reinforcement rod

[0031] 12 slides

[0032] 2. Sit on the stand

[0033] 21 First ear plate

[0034] 22 Angle adjustment holes

[0035] 3 Backrest

[0036] 31 second ear plate

[0037] 32 Adjustment wheel

[0038] 4 Multi-link mechanism

[0039] 41 First connecting rod

[0040] 42 Second connecting rod

[0041] 43 Third connecting rod

[0042] 431 First swing limiter

[0043] 44 Fourth connecting rod

[0044] 441 Second swing limiter

[0045] 5. Drive unit

[0046] 51 First mounting bracket

[0047] 52 Second mounting bracket

[0048] 53 Telescopic Drive

[0049] 6 Articulated structure

[0050] 61 articulated shaft

[0051] 62 Travel wheels

[0052] 7 Synchronizing rod

[0053] 8 Flexible Track DETAILED DESCRIPTION

[0054] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0055] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0056] For the convenience of description, Figure 1 The rotation direction of B is defined as counterclockwise, and the rotation direction opposite to the rotation direction of B is defined as clockwise.

[0057] like Figures 1 to 5 As shown, the present invention provides a multi-link massage chair with coordinated sliding and angle adjustment, comprising:

[0058] The base frame 1 includes a main body mounting frame 11, and the main body mounting frame 11 is symmetrically provided with slideways 12 on opposite sides of the left and right directions of the massage chair, and the slideways 12 extend along the front and back directions of the massage chair;

[0059] The seat frame 2 is symmetrically provided with hinge structures 6 on two opposite sides of the massage chair in the left and right directions. The hinge structures 6 on both sides correspond to the slideways 12 on both sides and move in coordination.

[0060] The backrest frame 3 is rotatably connected to the seat frame 2 via hinge structures 6 on opposite sides of the massage chair in the left and right directions;

[0061] The multi-link mechanism 4 includes a first link 41, a second link 42, a third link 43 and a fourth link 44. The two ends of the first link 41, the second link 42, the third link 43 and the fourth link 44 in the extension direction are respectively a fixed hinge end and a movable swing end. The third link 43 has a first swing limiter 431 that abuts and cooperates with the fourth link 44. The fourth link 44 has a second swing limiter 441 that abuts and cooperates with the third link 43. The first swing limiter 431 and the second swing limiter 441 jointly define the third link 43 and the fourth link 44 have a relative swing range, the rod body of the first link 41 is hinged to the sitting frame 2, the fixed hinged end of the first link 41 is hinged to the main body mounting frame 11, the movable swing end of the first link 41 is hinged to the movable swing end of the second link 42, the fixed hinged end of the second link 42 is hinged to the backrest frame 3, the fixed hinged end of the third link 43 is hinged to the fixed hinged end of the second link 42, the movable swing end of the third link 43 is hinged to the movable swing end of the fourth link 44, and the fixed hinged end of the fourth link 44 is hinged to the main body mounting frame 11;

[0062] The driving device 5 is used to drive the seat frame 2 to move forward and backward along the slide 12. When the hinge structure 6 moves to the extreme movement position relative to the slide 12, the third connecting rod 43 moves to the extreme swing position relative to the fourth connecting rod 44.

[0063] In the present invention, when the driving device 5 drives the seat frame 2 to move toward the front and upper part of the massage chair, on the one hand, since the seat frame 2 is symmetrically provided with hinge structures 6 on the opposite sides along the left and right directions of the massage chair, and the hinge structures 6 on both sides correspond one to one with the slides 12 on both sides and move in coordination, the seat frame 2 slides along the extension direction of the slide 12 through the hinge structure 6; on the other hand, since the rod body of the first connecting rod 41 is hinged to the seat frame 2, the fixed hinge end of the first connecting rod 41 is hinged to the main mounting frame 11, the first connecting rod 41 swings in the counterclockwise direction with its fixed hinge end as the swing center, and then the seat frame 2 swings in the clockwise direction relative to the base frame 1 with the hinge structure 6 as the swing center, and the swing angle of the seat frame 2 relative to the base frame 1 is recorded as the first adjustment angle. Because the movable swinging end of the first connecting rod 41 is hingedly connected to the movable swinging end of the second connecting rod 42, and the fixed hinged end of the second connecting rod 42 is hingedly connected to the backrest frame 3, the backrest frame 3 swings clockwise relative to the sitting frame 2 with the hinge structure 6 as the swing center during the movement with the sitting frame 2. The swing angle of the backrest frame 3 relative to the base frame 1 is recorded as the second adjustment angle, and the second adjustment angle is greater than the first adjustment angle. In other words, as the sitting frame 2 and the backrest frame 3 swing clockwise to cause the massage chair user to tilt, the angle between the backrest frame 3 and the sitting frame 2 increases, thereby increasing the angle between the massage chair user's body and legs. This gradually and evenly distributes the body's gravity throughout the massage chair, allowing the body to gradually enter a more natural and comfortable state of relaxation, effectively releasing physical and mental stress and relieving fatigue in the waist, back, and other areas. For example, when the massage chair user's body and legs are at approximately 127 degrees, the user is in a zero-gravity state (the massage chair simulates zero-gravity based on the principles of NASA's zero-gravity space capsule seats). Simultaneously, the heart and knees are aligned, effectively reducing cardiac pressure and promoting blood circulation. Similarly, when the drive device 5 drives the seat frame 2 toward the rear and downward direction of the massage chair, the massage chair returns to its original state. If the drive device 5 drives the seat frame 2 in a periodic reciprocating motion, the massage chair can also contract and expand the user's waist and abdominal muscles, achieving the dual effects of body massage and exercise.

[0064] like Figure 4As shown, the third link 43 further includes a first swing limiter 431 that abuts and cooperates with the fourth link 44, and the fourth link 44 includes a second swing limiter 441 that abuts and cooperates with the third link 43. The first swing limiter 431 and the second swing limiter 441 collectively define the relative swing range between the third link 43 and the fourth link 44. When the hinge structure 6 moves to its extreme position relative to the slide 12, the third link 43 moves to its extreme position relative to the fourth link 44. For example, when the hinge structure 6 moves to its extreme position relative to the slide 12 toward the front of the massage chair, the first swing limiter 431 of the third link 43 abuts against the fourth link 44; when the hinge structure 6 moves to its extreme position relative to the slide 12 toward the rear of the massage chair, the second swing limiter 441 of the fourth link 44 abuts against the third link 43. With this arrangement, the third link 43 and the fourth link 44 can assist in supporting the seat frame 2 when the massage chair is in the original state or the extreme tilting state, and make the movement of each mechanism of the massage chair more stable and smooth during the posture change of the massage chair.

[0065] Therefore, the multi-link massage chair with coordinated sliding and angle adjustment of the present invention uses only a single drive device 5 to cause the seat frame 2 to slide forward and backward, while simultaneously adjusting the swing angles of the seat frame 2 and backrest frame 3, thereby stretching and contracting the waist and abdominal muscles of the massage chair user. Furthermore, the seat frame 2 and backrest frame 3 provide greater reliability in supporting the massage chair user, and the position changes of the seat frame 2 and backrest frame 3 are more stable and smooth. Therefore, the massage chair of the present invention can reduce the number of power sources required, simplify the overall structure of the massage chair, significantly reduce the manufacturing and maintenance costs of the massage chair, and enhance the massage experience of the massage chair.

[0066] In order to reduce the friction resistance between the above-mentioned hinged structure 6 and the slide 12, the above-mentioned slide 12 is a sliding groove opening toward the seat frame 2. The above-mentioned hinged structure 6 includes a hinge shaft 61 that hinges the seat frame 2 and the backrest frame 3 together, and the hinge shaft 61 is provided with a running wheel 62 that is rolled in the sliding groove.

[0067] like Figure 3 As shown, in order to facilitate the hinged connection between the seat frame 2 and the backrest frame 3, the seat frame 2 has a first ear plate member 21 at a position close to the backrest frame 3, and the backrest frame 3 has a second ear plate member 31 at a position close to the seat frame 2. The first ear plate member 21 is hinged to the second ear plate member 31 via a hinge shaft 61.

[0068] like Figure 3As shown, in order to limit the angle between the backrest frame 3 and the seat frame 2, the seat frame 2 is provided with an angle adjustment hole 22 extending along a circular arc trajectory, and the center of the circle corresponding to the angle adjustment hole 22 is located on the axis of the hinge shaft 61. The backrest frame 3 is provided with an adjustment wheel 32, which moves with the backrest frame 3 and is always located in the angle adjustment hole 22.

[0069] like Figure 2 As shown, there are two multi-link mechanisms 4, which are symmetrically arranged on the opposite sides of the seat frame 2 along the left and right directions of the massage chair. The first links 41 of the two multi-link mechanisms 4 are connected to each other through a synchronization rod 7. This not only ensures the synchronization of the seat frame 2 along the left and right directions of the massage chair, but also ensures the synchronization of the backrest frame 3 along the left and right directions of the massage chair, thereby preventing the massage chair from shaking left and right due to asynchronous movement.

[0070] like Figure 1 As shown, to simplify the structure of the main mounting frame 11, the main mounting frame 11 includes a base frame 111. Support frames 112 are symmetrically arranged on opposite sides of the massage chair in the left and right directions. The support frames 112 on either side correspond to and are connected to the slideways 12 on either side. Furthermore, to enhance the stability of the base frame 1, a reinforcing rod 113 is provided between the base frame 111 and the support frames 112.

[0071] like Figure 5 As shown, in order to limit the swing range of the above-mentioned first connecting rod 41, the above-mentioned reinforcing rod 113 is arranged on the side of the cushion base 111 facing the front of the massage chair, and the fixed hinge end of the above-mentioned first connecting rod 41 is hinged to the cushion base 111; when the first connecting rod 41 moves to the extreme swing position relative to the cushion base 111, the reinforcing rod 113 and the first connecting rod 41 abut against each other.

[0072] like Figure 1 and Figure 2 As shown, the above-mentioned massage chair also includes a massage mechanism. In order to enable the massage mechanism to massage the thighs, buttocks, back and other parts of the massage chair user, the massage mechanism includes a flexible track 8 and a massage movement. The flexible track 8 is laid from the backrest frame 3 to the seat frame 2, and the massage movement is set on the flexible track 8.

[0073] like Figure 5 As shown, to facilitate installation of the drive device 5 between the base frame 1 and the seat frame 2, the drive device 5 includes a first mounting bracket 51 provided on the main body mounting bracket 11, a second mounting bracket 52 provided on the seat frame 2, and a telescopic actuator 53 hingedly connected to the first mounting bracket 51 and the second mounting bracket 52, respectively. Specifically, the telescopic actuator 53 is an electric push rod.

[0074] In summary, the multi-link sliding and angle-coordinated massage chair of the present invention uses only one drive device to slide the seat frame in the front-to-back direction of the massage chair, while adjusting the swing angle of the seat frame and backrest frame, stretching and contracting the waist and abdominal muscles of the massage chair user. The seat frame and backrest frame are more reliable in supporting the massage chair user, and the position changes of the seat frame and backrest frame are more stable and smooth, thereby reducing the number of power sources of the massage chair, simplifying the overall structure of the massage chair, greatly saving the manufacturing and maintenance costs of the massage chair, and improving the massage experience of the massage chair. Therefore, the present invention effectively overcomes the various shortcomings of the existing technology and has high industrial utilization value.

[0075] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A multi-link massage chair with coordinated sliding and angle adjustment, characterized in that: include: A base frame (1), the base frame (1) includes a main body mounting frame (11), the main body mounting frame (11) is symmetrically provided with slideways (12) along opposite sides in the left and right directions of the massage chair, and the slideways (12) extend along the front-back direction of the massage chair; The seat frame (2) is symmetrically provided with hinge structures (6) along two opposite sides in the left and right directions of the massage chair, and the hinge structures (6) on both sides correspond to the slideways (12) on both sides in a one-to-one manner and move in coordination; A backrest frame (3), wherein the backrest frame (3) is rotatably connected to the seat frame (2) via hinge structures (6) on opposite sides along the left and right directions of the massage chair; The multi-link mechanism (4) comprises a first link (41), a second link (42), a third link (43) and a fourth link (44); both ends of the first link (41), the second link (42), the third link (43) and the fourth link (44) in the extending direction are respectively a fixed hinge end and a movable swing end; the third link (43) has a first swing limiter (431) abutting against the fourth link (44); the fourth link (44) has a second swing limiter (441) abutting against the third link (43); the first swing limiter (431) and the second swing limiter (441) jointly define the third link (41). The relative swing range between the connecting rod (43) and the fourth connecting rod (44) is as follows: the rod body of the first connecting rod (41) is hinged to the sitting frame (2); the fixed hinged end of the first connecting rod (41) is hinged to the main body mounting frame (11); the movable swing end of the first connecting rod (41) is hinged to the movable swing end of the second connecting rod (42); the fixed hinged end of the second connecting rod (42) is hinged to the backrest frame (3); the fixed hinged end of the third connecting rod (43) is hinged to the fixed hinged end of the second connecting rod (42); the movable swing end of the third connecting rod (43) is hinged to the movable swing end of the fourth connecting rod (44); and the fixed hinged end of the fourth connecting rod (44) is hinged to the main body mounting frame (11); A driving device (5) is used to drive the sitting frame (2) to move forward and backward along the slide (12), and when the hinge structure (6) moves to an extreme movement position relative to the slide (12), the third connecting rod (43) moves to an extreme swing position relative to the fourth connecting rod (44); The driving device (5) comprises a first mounting bracket (51) provided on the main body mounting bracket (11), a second mounting bracket (52) provided on the sitting frame (2), and a telescopic driver (53) respectively hinged to the first mounting bracket (51) and the second mounting bracket (52), wherein the telescopic driver (53) is an electric push rod.

2. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 1, characterized in that: The slideway (12) is a sliding groove opening toward the seat frame (2); the hinge structure (6) includes a hinge shaft (61) hingedly connecting the seat frame (2) and the backrest frame (3); and a running wheel (62) rollingly arranged in the sliding groove is provided on the hinge shaft (61).

3. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 2, characterized in that: The seat frame (2) has a first ear plate (21) at a position close to the backrest frame (3), and the backrest frame (3) has a second ear plate (31) at a position close to the seat frame (2). The first ear plate (21) is hinged to the second ear plate (31) via a hinge shaft (61).

4. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 2, characterized in that: The seat frame (2) is provided with an angle adjustment hole (22) extending along an arc trajectory, and the center of the circle corresponding to the angle adjustment hole (22) is located on the axis of the hinge shaft (61). The backrest frame (3) is provided with an adjustment wheel (32), and the adjustment wheel (32) moves with the backrest frame (3) and is always located in the angle adjustment hole (22).

5. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 1, characterized in that: The number of the multi-link mechanisms (4) is two, and the two multi-link mechanisms (4) are symmetrically arranged on opposite sides of the seat frame (2) along the left and right directions of the massage chair, and the first links (41) of the two multi-link mechanisms (4) are connected to each other through a synchronization rod (7).

6. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 1, characterized in that: The main body mounting frame (11) comprises a cushion base frame (111), and the cushion base frame (111) is symmetrically provided with support frames (112) on two opposite sides in the left and right directions of the massage chair, and the support frames (112) on both sides correspond to and are connected to the slideways (12) on both sides.

7. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 6, characterized in that: A reinforcing rod (113) is provided between the pad base frame (111) and the supporting frame (112).

8. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 7, characterized in that: The reinforcing rod (113) is arranged on a side of the cushion base (111) facing the front of the massage chair, and the fixed hinged end of the first connecting rod (41) is hinged to the cushion base (111); when the first connecting rod (41) moves to an extreme swing position relative to the cushion base (111), the reinforcing rod (113) and the first connecting rod (41) abut against each other.

9. The multi-link massage chair with coordinated sliding and angle adjustment according to claim 1, characterized in that: The massage chair further comprises a massage mechanism, which comprises a flexible track (8) and a massage movement. The flexible track (8) is laid from the backrest frame (3) to the seat frame (2), and the massage movement is arranged on the flexible track (8).

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