Massage chair with backrest and lower limb support connected

Abstract

The utility model discloses a massage chair of back frame and lower limbs bracket linkage, including seat frame, back frame and lower limbs bracket, and back frame is configured in seat frame by a first pivot pivot connection, and lower limbs bracket is configured in seat frame by a second pivot, and the massage chair still includes a linkage component, and the linkage component is configured in back frame by a third pivot pivot connection and is configured in lower limbs bracket by a fourth pivot pivot connection, wherein the axis of first pivot and the axis of second pivot jointly define first imaginary plane, and the axis of third pivot and the axis of fourth pivot jointly define second imaginary plane different from first imaginary plane, when one of back frame and lower limbs bracket is driven to swing in fixed angle range, first imaginary plane and second imaginary plane are far away or close to each other, to drive the other synchronous swing through linkage component, and the scheme can complete posture switching without independent driving mechanism relative to prior art.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment, and in particular to a massage chair in which the backrest and lower limb support are linked. Background Technology

[0002] As people's living standards continue to improve, massage machines are becoming increasingly popular as a health care device. Massage machines are a type of health care equipment developed based on physics, bionics, and bioelectricity. Due to their convenient use and significant massage effects, they are favored by users because they can be used anytime in daily life.

[0003] The backrest and lower limb support of massage chairs are mostly driven independently, resulting in poor coordination between the two and making it difficult to achieve natural ergonomic posture adjustment.

[0004] Therefore, it is necessary to propose a new technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0005] To solve the above problems, this utility model provides a massage chair with a backrest and a lower limb support that are linked, enabling the backrest and lower limb support to be adjusted synchronously.

[0006] This utility model provides a massage chair with a backrest and a lower limb support that are linked, comprising: Frame; Back frame, which is pivotally mounted to the base frame via a first pivot; and A lower limb support, which is mounted on the seat frame by means of a second pivot; The massage chair also includes: A linkage member, which is pivotally mounted to the back frame via a third pivot and to the lower limb support via a fourth pivot; Wherein, the axis of the first pivot and the axis of the second pivot together define a first imaginary plane, and the axis of the third pivot and the axis of the fourth pivot together define a second imaginary plane that is different from the first imaginary plane; When one of the back frame and the lower limb support is driven to swing within a fixed angle range, the first imaginary plane and the second imaginary plane move away from or closer to each other, so as to drive the other to swing synchronously through the linkage member.

[0007] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0008] Optionally, the lower limb support includes a first support and a second support, the first support being attached to the seat frame via a second pivot, and the second support being configured to be movably attached to the first support; The massage chair also includes: A transmission component configured to be driven by the linkage component to drive the second bracket to produce a displacement movement along a first direction.

[0009] Optionally, the transmission component includes: A first transmission member, the first end of which is pivotally connected to the base via a fifth pivot, and the linkage member is pivotally connected to the first transmission member via the fourth pivot; The second transmission member has a first end movably disposed at the second end of the first transmission member, a second end movably disposed at the second bracket, and a middle position pivotally connected to the first bracket via a sixth pivot. The first transmission member is driven by the linkage member to cause the second transmission member to sway, thereby causing the second bracket to move in a displacement direction.

[0010] Optionally, the transmission component further includes: A connector, which is movably disposed on the first bracket in a first direction, and the second end of the first transmission member is pivotally connected to the first connector via a seventh pivot. A third transmission member, the first end of which is pivotally connected to the connecting member, and the second end of which is pivotally connected to the first end of the second transmission member; and The fourth transmission component has its first end pivotally connected to the second end of the second transmission component, and its second end pivotally connected to the second bracket; The first transmission member is driven by the linkage member to move the connecting member along the first direction, so as to drive the second transmission member to swing through the third transmission member, and to convert the swinging motion into the displacement motion of the second bracket along the first direction through the fourth transmission member.

[0011] Optionally, the axes of the second pivot, the fourth pivot, and the fifth pivot are arranged in parallel. The fifth pivot is located inside the frame relative to the second pivot; The fifth pivot is located below the second pivot.

[0012] Optionally, the first transmission member is bent. The linkage component is pivotally connected to the middle position of the first transmission component via the fourth pivot.

[0013] Optionally, when one of the back frame and the lower limb support is driven to swing within a fixed angle range, the swing directions of the back frame and the lower limb support are the same.

[0014] Optionally, the first imaginary plane is located above the second imaginary plane.

[0015] Optionally, the axes of the first pivot, the second pivot, the third pivot, and the fourth pivot are arranged in parallel.

[0016] Optionally, the massage chair has a seated support state and a reclining support state; The massage chair also includes: A first output component is configured to drive the back frame or the seat frame to tilt. The base, the bracket configured to be movably mounted on the base; and A second output component is configured to drive the bracket to move along the base.

[0017] This invention relates to a massage chair with a linked backrest and lower limb support. When the backrest or lower limb support is driven to swing, a first imaginary plane (composed of the backrest pivot and the lower limb support main pivot) and a second imaginary plane (composed of the pivots at both ends of the linkage component) undergo relative displacement. Furthermore, the two imaginary planes always remain non-coplanar. The third pivot changes its spatial position with the movement of the backrest, and the displacement is transmitted to the lower limb support through a fourth pivot, ultimately achieving the swinging of the backrest and lower limb support within a fixed angle range, thus realizing synchronous movement of the backrest and lower limb support. By achieving bidirectional linkage between the swinging of the backrest and lower limb support through a single linkage component, posture switching can be completed without an independent drive mechanism, significantly reducing the number of parts and the complexity of the transmission chain, thereby lowering manufacturing costs and failure rates. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a massage chair according to an embodiment of this utility model; Figure 2 for Figure 1 A schematic diagram of a massage chair in a reclining, supported position. Figure 3 for Figure 2 An enlarged structural diagram of part A in the diagram; Figure 4 for Figure 2 A structural diagram of a massage chair from another perspective; Figure 5 for Figure 1 A partial structural diagram of a massage chair; Figure 6 for Figure 2 A partial structural diagram of a massage chair; Figure 7 for Figure 1 Schematic diagram of the structure of the central transmission component and the lower limb bracket; Figure 8 for Figure 2 A schematic diagram of the structure of the central transmission component and the lower limb bracket.

[0019] The annotations in the figure are explained as follows: 100. Massage chair; 10. Base; 11. Guide rail; 12. Second output component; 20. Frame; 21. Guide block; 22. Roller support structure; 30. Back frame; 31. Extension frame; 32. First pivot; 33. First output component; 40. Lower limb support; 41. Second pivot; 42. First support; 43. Second support; 50. Linking component; 51. Third pivot; 52. Fourth pivot; 60. Transmission component; 61. Connecting component; 62. First transmission component; 63. Second transmission component; 64. Third transmission component; 65. Fourth transmission component; 66. Fifth pivot; 67. Sixth pivot; 68. Seventh pivot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 8As shown, this utility model also provides a massage chair 100 with a backrest 30 and a lower limb support 40 linked together, including a seat frame 20, a backrest 30, and a lower limb support 40. The backrest 30 is pivotally connected to the seat frame 20 via a first pivot 32; the lower limb support 40 is connected to the seat frame 20 via a second pivot 41; the massage chair 100 also includes a linkage member 50, which is pivotally connected to the backrest 30 via a third pivot 51 and to the lower limb support 40 via a fourth pivot 52. The lower limb support 40; wherein the axis of the first pivot 32 and the axis of the second pivot 41 together define a first imaginary plane, and the axis of the third pivot 51 and the axis of the fourth pivot 52 together define a second imaginary plane different from the first imaginary plane; wherein, when one of the back frame 30 and the lower limb support 40 is driven to swing within a fixed angle range, the first imaginary plane and the second imaginary plane move away from or closer to each other, so as to drive the other to swing synchronously through the linkage member 50.

[0024] When the back frame 30 or the lower limb support 40 swings, the first imaginary plane (formed by the pivot of the back frame 30 and the main pivot of the lower limb support 40) and the second imaginary plane (formed by the pivots at both ends of the linkage 50) undergo relative displacement. Furthermore, the two imaginary planes always remain non-coplanar. The third pivot 51 changes its spatial position with the movement of the back frame 30, and transmits the displacement to the lower limb support 40 through the fourth pivot 52, ultimately achieving the swinging of the back frame 30 and the lower limb support 40 within a fixed angle range, thus realizing the synchronous movement of the back frame 30 and the lower limb support 40. The bidirectional linkage of the swinging of the back frame 30 and the lower limb support 40 is achieved through a single linkage 50, eliminating the need for an independent drive mechanism to complete posture switching, significantly reducing the number of parts and the complexity of the transmission chain, and lowering manufacturing costs and failure rates.

[0025] In this embodiment, as Figures 1 to 8 As shown, the massage chair 100 has a seated support state and a reclining support state. In the seated support state, the backrest 30, seat frame 20, and lower limb support 40 constitute a seat structure, allowing the user to sit on the massage chair 100. In the seated support state, the backrest 30 is vertical or tilted, and the lower limb support 40 is vertically positioned and rests against the seat frame 20. In the reclining support state, the backrest 30, seat frame 20, and lower limb support 40 constitute a bed structure, allowing the user to lie flat on the massage chair 100. In the reclining support state, the backrest 30 swings to near horizontal, and the lower limb support 40 swings to near horizontal. The backrest 30, seat frame 20, and lower limb support 40 connect to form a continuous planar support structure, creating a complete support plane for the user's back, waist, and buttocks.

[0026] In this embodiment, as Figures 1 to 8As shown, when one of the backrest 30 and the lower limb support 40 is driven to swing within a fixed angle range, the swing directions of the backrest 30 and the lower limb support 40 are the same, so that the massage chair 100 can switch between a seated support state and a reclining support state. The fixed angle range can be less than 100 degrees; preferably, the fixed angle range can be less than 95 degrees or 90 degrees.

[0027] In this embodiment, as Figures 1 to 8 As shown, the structure of the seat frame 20 is not strictly limited, as long as it can support the user's buttocks; for example, the seat frame 20 can be a frame structure. The structure of the backrest 30 is not strictly limited, as long as it can support the user's back; for example, the backrest 30 can be a frame structure. The structure of the lower limb support 40 is not strictly limited, as long as it can support the user's lower limbs; for example, the lower limb support 40 can be a frame structure. The backrest 30 has an extension frame 31 at its bottom, extending downwards from the extension frame 31; the linkage member 50 is pivotally connected to the extension frame 31 via a third pivot 51.

[0028] In this embodiment, as Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, the axes of the first pivot 32, the second pivot 41, the third pivot 51, and the fourth pivot 52 are arranged in parallel; a portion of the structure of the seat frame 20, a portion of the structure of the back frame 30, a portion of the structure of the lower limb support 40, and at least a portion of the structure of the linkage 50 form a first four-bar linkage structure; the axes of the first pivot 32, the second pivot 41, the third pivot 51, and the fourth pivot 52 are respectively located at the apex of the first four-bar linkage structure.

[0029] In this embodiment, as Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, the first imaginary plane is located above the second imaginary plane. During the swinging process of the back frame 30 and the seat frame 20, the first imaginary plane can remain stationary in the vertical direction, while only the second imaginary plane moves away from or closer to the first imaginary plane relative to it.

[0030] In this embodiment, as Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, the axis of the first pivot 32 and the axis of the third pivot 51 together define the third imaginary plane, and the axis of the second pivot 41 and the axis of the fourth pivot 52 together define the fourth imaginary plane, which is different from the third imaginary plane. During the swinging motion of the back frame 30 and the seat frame 20, the third and fourth imaginary planes will change.

[0031] In this embodiment, as Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, the linkage member 50 has a rod-like structure. The linkage member 50 is located below the support surface of the seat frame 20 and is at a certain distance from the support surface of the seat frame 20. One end of the linkage member 50 extends approximately to the bottom of the seat frame 20 on the side facing the backrest 30, and the other end extends approximately to the bottom of the seat frame 20 on the side facing the lower limb support 40.

[0032] In this embodiment, as Figure 1 , Figure 2 as well as Figures 4 to 6 As shown, the massage chair 100 also includes a first output member 33, which is configured to drive the backrest 30 or the seat frame 20 to oscillate. One end of the first output member 33 is pivotally connected to the extension frame 31, and the other end is pivotally connected to the seat frame 20, so that the first output member 33 drives the backrest 30 to oscillate about a first pivot 32; or, one end of the first output member 33 is pivotally connected to the lower limb support 40, and the other end is pivotally connected to the seat frame 20, so that the first output member 33 drives the lower limb support 40 to oscillate about a second pivot 41. The first output member 33 can be an electric push rod, a linear motor, or a hydraulic cylinder, etc.

[0033] In this embodiment, as Figures 1 to 6 As shown, the massage chair 100 also includes a base 10 and a second output member 12. The seat frame 20 is configured to be movably mounted on the base 10, and the second output member 12 is configured to drive the seat frame 20 to move along the base 10. When the massage chair 100 switches between a seated support state and a reclining support state, the seat frame 20 can move horizontally. During the horizontal translation of the seat frame 20, the seat frame 20, backrest 30, and lower limb support 40 will all move horizontally as a whole, so that the backrest 30 will not excessively encroach on the rear space when it swings backward, thus reducing the space occupied by the backrest 30 at the rear of the massage chair 100.

[0034] In this embodiment, as Figures 1 to 6 As shown, the base 10 is used to contact the ground and support the seat frame 20 and other structures in the massage chair 100. The structure of the base 10 is not strictly limited; for example, the base 10 can be a frame structure. Both the base 10 and the seat frame 20 have a guide block 21 and a guide rail 11 that cooperates with the guide block 21. The guide block 21 and guide rail 11 restrict the movement path of the seat frame 20, allowing the seat frame 20 to move horizontally.

[0035] In this embodiment, as Figures 1 to 6As shown, the guide rail 11 is fixed to the base 10 by welding or screws; the guide block 21 is fixed to the frame 20 by welding or screws. There are two guide rails 11, arranged side-by-side along the width of the base 10; there are two sets of guide blocks 21, each corresponding to a different guide rail 11, to ensure greater stability when the frame 20 moves along the base 10. When the frame 20 moves horizontally, the guide block 21 rolls or slides within the guide rail 11. Specifically, the guide rail 11 has a groove, and the guide block 21 is fitted into the groove and can slide along it.

[0036] In this embodiment, as Figures 1 to 2 As shown, one end of the second output component 12 is pivotally connected to the bracket 20, and the other end is pivotally connected to the base 10. The second output component 12 can be an electric actuator, a linear motor, or a hydraulic cylinder, etc.

[0037] In this embodiment, as Figures 1 to 6 As shown, the bottom front side of the seat frame 20 has a roller support structure 22, which remains in contact with the ground. When the massage chair 100 switches to a reclining support posture, the roller support structure 22 and the base 10 jointly support the seat frame 20. At this time, the base 10 is located at the rear of the seat frame 20 to reduce the space occupied by the base 10.

[0038] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the lower limb support 40 includes a first support 42 and a second support 43. The first support 42 is attached to the seat frame 20 via a second pivot 41. The second support 43 is configured to be movably attached to the first support 42 and the second support 43. There are no strict limitations on the structure; for example, both the first support 42 and the second support 43 are frame structures.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, during the process of switching the massage chair 100 from a seated support state to a reclining support state, the second support 43 moves away from the seat frame 20 along the first direction to lengthen the lower limb support 40; conversely, during the process of switching the massage chair 100 from a reclining support state to a seated support state, the second support 43 moves towards the seat frame 20 along the first direction to shorten the lower limb support 40. The first direction specifically refers to the relative movement trajectory of the second support 43 and the first support 42; when the second support 43 slides along the length direction of the first support 42 (i.e., from the seat frame 20 towards the legs), this sliding path is defined as the first direction.

[0040] In this embodiment, as Figure 7 as well as Figure 8 As shown, of the first bracket 42 and the second bracket 43, one is provided with a slider, and the other is provided with a guide rail that cooperates with the slider. The slider and guide rail can restrict the movement path of the second bracket 43, so that the second bracket 43 can move along the first direction.

[0041] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the massage chair 100 also includes a transmission component 60, which is configured to be driven by the linkage component 50 to drive the second bracket 43 to produce a displacement movement along a first direction. The linkage component 50 drives the second bracket 43 to produce a displacement movement along the first direction through the transmission component 60, realizing the synchronous movement of the backrest 30, the first bracket 42, and the second bracket 43; and can realize the movement of the second bracket 43 relative to the first bracket 42 during the swaying of the lower limb bracket 40.

[0042] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the transmission component 60 includes a first transmission member 62 and a second transmission member 63. The first end of the first transmission member 62 is pivotally connected to the base 20 via a fifth pivot 66, and the linkage member 50 is pivotally connected to the first transmission member 62 via a fourth pivot 52. The first end of the second transmission member 63 is movably disposed at the second end of the first transmission member 62, and the second end is movably disposed at the second bracket 43. The middle position is pivotally connected to the first bracket 42 via a sixth pivot 67. The first transmission member 62 is driven by the linkage member 50 to drive the second transmission member 63 to sway, thereby causing the second bracket 43 to generate displacement movement along the first direction.

[0043] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8As shown, the transmission component 60 further includes a connector 61, a third transmission component 64, and a fourth transmission component 65. The connector 61 is movably disposed on the first bracket 42 along the first direction. The second end of the first transmission component 62 is pivotally connected to the first connector 61 via a seventh pivot 68. The first end of the third transmission component 64 is pivotally connected to the connector 61, and the second end is pivotally connected to the first end of the second transmission component 63. The first end of the fourth transmission component 65 is pivotally connected to the second end of the second transmission component 63, and the second end is pivotally connected to the second bracket 43. The first transmission component 62 is driven by the linkage component 50 to move the connector 61 along the first direction, so as to drive the second transmission component 63 to oscillate through the third transmission component 64, and convert the oscillation action into a displacement motion of the second bracket 43 along the first direction through the fourth transmission component 65.

[0044] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the first transmission member 62 is bent; the linkage member 50 is pivotally connected to the middle position of the first transmission member 62 via the fourth pivot 52, so that the axis of the fourth pivot 52, the axis of the fifth pivot 66 and the axis of the seventh pivot 68 are not in the same plane, so that the linkage member 50 can drive the first transmission member 62 to swing.

[0045] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the axes of the second pivot 41, the fourth pivot 52, the fifth pivot 66, and the seventh pivot 68 are all arranged in parallel. The axis of the sixth pivot 67 is arranged in parallel with the first direction. The fifth pivot 66 is located inside the seat frame 20 relative to the second pivot 41; the fifth pivot 66 is located below the second pivot 41 so that when the lower limb support 40 swings, the position of the first transmission member 62 on the lower limb support 40 changes, thereby driving the position of the connecting member 61 to change.

[0046] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 7 as well as Figure 8 As shown, the second transmission component 63, the third transmission component 64, and the fourth transmission component 65 are all rod-shaped structures. When the massage chair 100 is in a seated or reclining position, the second transmission component 63 and the third transmission component 64 are always set at an angle; the second transmission component 63 and the fourth transmission component 65 are always set at an angle.

[0047] The following describes the process of switching the massage chair 100 from a seated support position to a reclining support position: The first output component 33 pushes the extension frame 31 at the bottom of the back frame 30, at which time the back frame 30 swings backward and upward around the first pivot 32; the swing of the back frame 30 causes the spatial position of the axis of the third pivot 51 and the axis of the fourth pivot 52 to change, so that the linkage component 50 drives the first transmission component 62 to sway. During the swaying process of the first transmission component 62, the first bracket 42 will sway and the connecting component 61 will move along the first direction. The connecting component 61 will drive the second transmission component 63 to sway through the third transmission component 64. The second transmission component 63 will drive the second bracket 43 to move along the first direction through the fourth transmission component 65. The second output component bracket 20 moves horizontally by means of the cooperation between the bottom rollers and the guide rail 11 of the base 10.

[0048] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0049] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A massage chair with a backrest and lower limb support that are linked together, comprising: Frame; Back frame, which is pivotally mounted to the seat frame via a first pivot; as well as A lower limb support, which is mounted on the seat frame by means of a second pivot; Its features are: The massage chair also includes: A linkage member, which is pivotally mounted to the back frame via a third pivot and to the lower limb support via a fourth pivot; Wherein, the axis of the first pivot and the axis of the second pivot together define a first imaginary plane, and the axis of the third pivot and the axis of the fourth pivot together define a second imaginary plane that is different from the first imaginary plane; When one of the back frame and the lower limb support is driven to swing within a fixed angle range, the first imaginary plane and the second imaginary plane move away from or closer to each other, so as to drive the other to swing synchronously through the linkage member.

2. A massage chair according to claim 1, characterized in that, The lower limb support includes a first support and a second support, the first support being attached to the seat frame via a second pivot, and the second support being configured to be movably attached to the first support; The massage chair also includes: A transmission component configured to be driven by the linkage component to drive the second bracket to produce a displacement movement along a first direction.

3. A massage chair according to claim 2, characterized in that, The transmission component includes: A first transmission member, the first end of which is pivotally connected to the base via a fifth pivot, and the linkage member is pivotally connected to the first transmission member via the fourth pivot; The second transmission member has a first end movably disposed at the second end of the first transmission member, a second end movably disposed at the second bracket, and a middle position pivotally connected to the first bracket via a sixth pivot. The first transmission member is driven by the linkage member to cause the second transmission member to sway, thereby causing the second bracket to move in a displacement direction.

4. A massage chair according to claim 3, characterized in that, The transmission component also includes: A connector, which is movably disposed on the first bracket in a first direction, and the second end of the first transmission member is pivotally connected to the connector via a seventh pivot. A third transmission member, the first end of which is pivotally connected to the connecting member, and the second end of which is pivotally connected to the first end of the second transmission member; and The fourth transmission component has its first end pivotally connected to the second end of the second transmission component, and its second end pivotally connected to the second bracket; The first transmission member is driven by the linkage member to move the connecting member along the first direction, so as to drive the second transmission member to swing through the third transmission member, and to convert the swinging motion into the displacement motion of the second bracket along the first direction through the fourth transmission member.

5. A massage chair according to claim 3 or 4, characterized in that, The axes of the second pivot, the fourth pivot, and the fifth pivot are arranged in parallel. The fifth pivot is located inside the frame relative to the second pivot; The fifth pivot is located below the second pivot.

6. A massage chair according to claim 3 or 4, characterized in that, The first transmission component is bent. The linkage component is pivotally connected to the middle position of the first transmission component via the fourth pivot.

7. A massage chair according to claim 1 or 2, characterized in that, When one of the back frame and the lower limb support is driven to swing within a fixed angle range, the swing direction of the back frame and the lower limb support is the same.

8. A massage chair according to claim 1, characterized in that, The first imaginary plane is located above the second imaginary plane.

9. A massage chair according to claim 1, characterized in that, The axes of the first pivot, the second pivot, the third pivot, and the fourth pivot are arranged in parallel.

10. A massage chair according to claim 1, characterized in that, The massage chair has a seated support state and a reclining support state; The massage chair also includes: A first output component is configured to drive the back frame or the seat frame to tilt. The base, the bracket configured to be movably mounted on the base; and A second output component is configured to drive the bracket to move along the base.

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