Chair frame and massage device

Abstract

A chair frame can be used in massage devices such as a massage chair and the like and can enrich massage modes of the massage devices. The chair frame of the present invention comprises: a base; the seating part is supported on the base in a rotatable manner; the seating part driving device is connected to the base and the seating part respectively and drives the seating part to rotate relative to the base; the backrest part is rotatably connected with the sitting part; and the backrest part driving device is connected to the seating part and the backrest part respectively and drives the backrest part to rotate relative to the seating part.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of massage, in particular to a chair frame and a massage device with the chair frame. BACKGROUND

[0002] A massage chair is disclosed in patent document CN202110336302.6, which comprises a base, a seat support rotatably supported on the base, a lower leg support rotatably connected with the seat support, and a driving device driving the seat support to rotate relative to the base and driving the lower leg support to rotate relative to the seat support.

[0003] However, in the above massage chair, the backrest part and the seating part are formed as one whole, constituting the seat support, and are formed as a chair frame in the shape of approximately L, so that the massage mode is relatively less, and the needs of users for various massage modes cannot be met. SUMMARY

[0004] The present application is completed in view of the above problems, and aims to provide a chair frame capable of enriching the massage mode of a chair frame with massage function. In addition, the present application also aims to provide a massage device with the above chair frame.

[0005] In order to achieve the above-mentioned purpose, the present application provides a chair frame, comprising a base, a seating part rotatably supported on the base, a seating part driving device connected to the base and the seating part respectively and driving the seating part to rotate relative to the base, a backrest part rotatably connected with the seating part, and a backrest part driving device connected to the seating part and the backrest part respectively and driving the backrest part to rotate relative to the seating part.

[0006] The chair frame according to the present application comprises: a base; a seat portion rotatably supported on the base; a seat portion driving device for driving the seat portion to rotate relative to the base so as to change a seat portion included angle between the seat portion and the base; a back portion rotatably connected to the seat portion; and a back portion driving device for driving the back portion to rotate relative to the seat portion so as to change a back portion included angle between the back portion and the seat portion. Thus, in the state that a user sits on the seat portion and leans his back against the back portion, by the rotation of the back portion relative to the seat portion under the driving of the back portion driving device, the stretching and pressing between the waist and abdomen (and the thigh) and the lower leg to the foot can be further realized, so as to realize the stretching and pressing of the multi-joint area from the trunk to the foot. Furthermore, when the seat portion rotates relative to the base under the driving of the seat portion driving device, the functional assembly including the seat portion and the back portion can be driven to reciprocate forward and backward under the support of the base, so as to change the center of gravity of the body in the state that the body of the user is kept in any stretching and pressing posture, and a variety of massage modes can be realized.

[0007] In addition, the seat portion and the back portion can also have massage mechanisms such as rollers or air bags for massaging the corresponding parts of the user.

[0008] In addition, in the chair frame according to the present application, the base and the seat portion are preferably connected through a guide rail in a sliding manner, and when the seat portion or the base slides along the guide rail, the seat portion is relatively displaced relative to the base while the seat portion included angle is changed.

[0009] In addition, in the chair frame according to the present application, preferably, at least one of a first state and a second state can be presented during the movement of the seat portion or the base along the guide rail, in the first state, the front end of the upper surface of the seat portion is higher than the rear end, in the second state, the front end of the upper surface of the seat portion is lower than the rear end, and an intermediate state can also be presented during the movement of the seat portion or the base along the guide rail, in the intermediate state, the front end of the upper surface of the seat portion is substantially flush with the rear end.

[0010] Here, the "upper surface of the seat portion" refers to the surface in contact with the buttocks and thighs of the user when the user sits on the seat portion or the surface corresponding to the surface, and the first state and the second state are both based on the bottom surface of the base being kept horizontal.

[0011] According to the chair frame of the present invention, during the movement of the seat or base along the guide rail, it can present at least one of a first state and a second state. In the first state, the front end of the upper surface of the seat is higher than the rear end. In the second state, the front end of the upper surface of the seat is lower than the rear end. During the movement of the seat or base along the guide rail, it can also present an intermediate state in which the front end and the rear end of the upper surface of the seat are approximately flush. Therefore, by switching between multiple states, the user can be provided with a massage experience in different postures or body positions. Furthermore, by switching to the second state, the user can easily stand up from the seat.

[0012] Furthermore, in the chair frame of the present invention, the guide rail is preferably formed as an arc shape with the central portion lower than the two ends, and the upper surface of the seat portion is higher than the two ends of the guide rail throughout the entire range of motion of the seat portion.

[0013] According to the chair frame of the present invention, the guide rail is formed in an arc shape with the central part lower than the two ends. Throughout the entire range of motion of the seat, the upper surface of the seat is higher than the two ends of the guide rail. Therefore, even if the guide rail is set low in order to improve the stability of the seat when rotating, the backrest drive device and the like can be conveniently installed using the space between the upper surface of the seat and the guide rail in the vertical direction.

[0014] Furthermore, the chair frame of the present invention preferably further includes: a leg portion rotatably connected to the seat portion; and a leg drive device connected to the seat portion and the leg portion respectively, and driving the leg portion to rotate relative to the seat portion.

[0015] In addition, the leg area can also have massage mechanisms such as rollers or airbags to massage the user's legs and feet.

[0016] Furthermore, in the chair frame of the present invention, preferably the seat drive device is located in the vertical direction between the bottom surface of the base and the bottom surface of the seat, and the leg drive device and the backrest drive device are located in the vertical direction between the upper surface of the seat and the bottom surface of the seat.

[0017] According to the chair frame of the present invention, the seat drive device is located between the bottom surface of the base and the bottom surface of the seat in the vertical direction, and the leg drive device and the backrest drive device are located between the upper surface of the seat and the bottom surface of the seat in the vertical direction. Therefore, it is possible to conveniently avoid interference between the seat drive device and the leg drive device and the backrest drive device.

[0018] Furthermore, in the chair frame of the present invention, the leg drive device preferably includes: a leg drive push rod having a first part and a second part that are movable relative to each other, the first part being rotatably connected to the seat portion; and a leg drive link having a rear end rotatably connected to the second part, the front end of the leg drive link having a roller that supports the legs.

[0019] According to the chair frame of the present invention, the leg drive device includes: a leg drive push rod having a first part and a second part that are movable relative to each other, the first part being rotatably connected to the seat; and a leg drive link having a rear end rotatably connected to the second part, the front end of the leg drive link having a roller supporting the leg. Therefore, the leg drive device has a simple structure and can reliably control the rotation angle of the leg relative to the seat, and is not easily affected by external vibrations, etc.

[0020] Furthermore, in the chair frame of the present invention, the seating portion driving device preferably includes: a seating portion driving push rod, which is rotatably connected to one of the base and the seating portion; and a seating portion driving slider, which is movable along the seating portion driving push rod and is rotatably connected to the other of the base and the seating portion.

[0021] According to the chair frame of the present invention, the seat driving device includes: a seat driving push rod rotatably connected to one of the base and the seat; and a seat driving slider movable along the seat driving push rod and rotatably connected to the other of the base and the seat. Therefore, the seat driving device has a simple structure.

[0022] Furthermore, in the chair frame of the present invention, the backrest driving device preferably includes a backrest driving push rod, the backrest driving push rod having a first part and a second part that are movable relative to each other, the first part being rotatably connected to one of the seat and the backrest, and the second part being rotatably connected to the other of the seat and the backrest.

[0023] According to the chair frame of the present invention, the backrest drive device includes a backrest drive push rod, which has a first part and a second part that are movable relative to each other. The first part is rotatably connected to one of the seat and the backrest, and the second part is rotatably connected to the other of the seat and the backrest. Therefore, the backrest drive device has a simple structure and can reliably control the rotation angle of the backrest relative to the seat, and is not easily affected by external vibrations, etc.

[0024] Furthermore, in the chair frame of the present invention, it is preferable to have at least one of a zero-gravity state, a standing state, a reclining state, a compression state, and a stretching state. In the zero-gravity state, the seat angle (the angle formed by the upper surface of the seat and the bottom surface of the base) is a predetermined angle, the leg angle (the angle formed by the upper surface of the legs and the upper surface of the seat) is any angle within a predetermined range, and the backrest angle (the angle formed by the upper surface of the backrest and the upper surface of the seat) is any angle within a predetermined range. In the standing state, the seat angle is such that the upper surface of the seat... The side end is lower than or roughly level with the rear end. In the lying-flat state, the included angle of the seat part is a predetermined angle, and the included angle of the legs and the backrest are both close to 180°. In the compressed state, the included angle of the seat part is a predetermined angle, and the legs are controlled to rotate relative to the front end of the seat part and gradually move closer to the backrest from the front upper part of the seat part. The backrest is controlled to rotate relative to the rear end of the seat part and gradually move closer to the legs from the rear upper part of the seat part. In the stretched state, the legs and the backrest move away from each other.

[0025] Furthermore, the chair frame of the present invention preferably has at least one of a first compression-stretch mode, a second compression-stretch mode, and a rocking mode. In the first compression-stretch mode, the included angle of the seat portion is a predetermined angle, and the legs and the backrest are controlled to rotate relative to the seat portion to change the included angle of the legs and the included angle of the backrest, and repeatedly move synchronously closer to each other and synchronously move away from each other. In the second compression-stretch mode, the included angle of the legs is a predetermined angle, and the included angle of the seat portion changes relative to the base, and the included angle of the backrest also changes. In the rocking mode, the included angle of the seat portion changes relative to the base, driving the functional components including the legs, the seat portion, and the backrest to reciprocate relative to the base.

[0026] In addition, to achieve the above objectives, the present invention provides a massage device having any of the chair frames described above.

[0027] The chair frame according to the present invention includes: a base; a seat portion rotatably supported on the base relative to the base; a seat portion drive device that drives the seat portion to rotate relative to the base, thereby changing the angle between the seat portion and the base; a backrest that is rotatably connected to the seat portion relative to the seat portion; and a backrest drive device that drives the backrest to rotate relative to the seat portion, thereby changing the angle between the backrest and the seat portion. Therefore, when the user sits on the seat portion with their back against the backrest, the rotation of the backrest relative to the seat portion under the drive of the backrest drive device further achieves stretching and compression between the waist and abdomen (and thighs) and the calves to the feet, thereby achieving stretching and compression of the multi-joint area from the torso to the feet. Furthermore, when the seat rotates relative to the base under the drive of the seat drive device, it can drive the functional components, including the legs, seat, and backrest, to move back and forth under the support of the base. This allows the user's body to be held in any stretched or compressed posture while the center of gravity of the body is changed, thus enabling a variety of massage modes. Attached Figure Description

[0028] Figure 1 This is a perspective view schematically illustrating an embodiment of the chair frame of the present invention.

[0029] Figure 2 This is a schematic side view of a chair frame according to an embodiment of the present invention, showing the initial state.

[0030] Figure 3 This is a side view schematically illustrating an embodiment of the chair frame of the present invention, and represents a zero-gravity state.

[0031] Figure 4 This is a schematic side view of a chair frame according to an embodiment of the present invention, showing a reclining state.

[0032] Figure 5 This is a side view schematically illustrating an embodiment of the chair frame of the present invention, showing the standing posture.

[0033] Figure 6 This is a schematic side view of a chair frame according to an embodiment of the present invention, showing a compressed state.

[0034] Figure 7 This is a side view schematically illustrating an embodiment of the chair frame of the present invention, showing it in a stretched state.

[0035] (Symbol Explanation)

[0036] 1 Chair frame

[0037] 10 bases

[0038] 11 Bottom

[0039] 111 First horizontal bar

[0040] 112 Second crossbar

[0041] 12 guide rails

[0042] 13 Connecting parts

[0043] 131 First vertical rod

[0044] 132 Second vertical rod

[0045] 133 Third vertical rod

[0046] 20 Seating Section

[0047] 21. Seating at the bottom

[0048] 211 Bottom first link

[0049] 212 Protrusion

[0050] 22 Seating at the top

[0051] 221 Top Link

[0052] 23 Seating connection part

[0053] 231 Third Link

[0054] 232 Fourth Link

[0055] 30 Legs

[0056] 40 Backrest

[0057] 50 Seating section drive unit

[0058] 51 Seat section drive push rod

[0059] 52 Seat Part Drive Slider

[0060] 60 Leg drive device

[0061] 61 Leg-driven push rod

[0062] 62 Leg drive linkage

[0063] 70 Backrest drive mechanism

[0064] 71 Backrest-driven push rod

[0065] 80 Pedal Section Detailed Implementation

[0066] Below, in conjunction with Figures 1 to 7Taking a massage chair as an example, the chair frame of the present invention will be described. However, this chair frame is not limited to massage devices such as massage chairs, and can also be used in other functional chairs or devices that support the user's body but do not have a massage function.

[0067] For ease of explanation, here, we will use... Figure 1 The terms "up", "down", "left", "right", "front", and "back" shown are used as directional references.

[0068] Example

[0069] (The overall structure of the chair frame)

[0070] like Figure 1 and Figure 2 As shown, the chair frame 1 includes: a base 10; a seat portion 20 rotatably supported on the base 10; a seat portion drive device 50 connected to the base 10 and the seat portion 20 respectively, and driving the seat portion 20 to rotate relative to the base 10; a backrest 40 rotatably connected to the seat portion 20; and a backrest drive device 70 connected to the seat portion 20 and the backrest 40 respectively, and driving the backrest 40 to rotate relative to the seat portion 20.

[0071] Here, as Figure 1 and Figure 2 As shown, the chair frame 1 also includes: a leg portion 30, which is rotatably connected to the seat portion 20; and a leg drive device 60, which is connected to both the seat portion 20 and the leg portion 30, and drives the leg portion 30 to rotate relative to the seat portion 20. Furthermore, the chair frame 1 also includes a footrest portion 80, which is rotatably connected to the leg portion 30. The footrest portion 80, leg portion 30, seat portion 20, and backrest 40 are generally connected end-to-end and rotatably hinged. The rotation axes of the footrest portion 80 relative to the leg portion 30, the seat portion 20 relative to the base 10, the leg portion 30 relative to the seat portion 20, and the backrest 40 relative to the seat portion 20 are parallel to each other (parallel to the left-right direction in the illustrated example).

[0072] Furthermore, although not shown in the figure, a control unit can be provided on the chair frame 1 to control the operation of the seat drive device 50, the leg drive device 60, and the backrest drive device 70. Additionally, a storage unit for storing control commands can also be provided on the chair frame 1.

[0073] (Base)

[0074] like Figure 1 As shown, the base 10 is a support frame that supports the entire functional components, including the legs 30, the seating section 20, and the backrest 40.

[0075] Although not shown here, in practice a base cover portion (which may be made of plastic, etc.) is usually provided to cover the base 10.

[0076] In addition, such as Figure 1 As shown, the base 10 includes a guide rail 12 that guides the movement trajectory of the seat 20.

[0077] Specifically, the base 10 includes a bottom 11, a guide rail 12, and a connecting portion 13. The bottom surface of the bottom 11 is in contact with a supporting surface such as the ground, and the surface on which the bottom 11 is located can also be considered as the bottom surface. The guide rail 12 is located above the bottom 11 and is connected to the bottom 11 via the connecting portion 13.

[0078] More specifically, the bottom 11 includes: a pair of first crossbars 111 extending in a front-to-back direction and spaced apart in a left-to-right direction; and a pair of second crossbars 112 extending in a left-to-right direction and spaced apart in a front-to-back direction, connecting the pair of first crossbars 111 to each other.

[0079] The guide rail 12 extends generally in the front-to-back direction and is in the shape of a downwardly convex arc. Specifically, the guide rail 12 is formed as an arc with the central part lower than the two ends. A pair of guide rails 12 are symmetrically arranged at intervals in the left-to-right direction. In the illustrated example, the front end of the guide rail 12 is lower than the rear end, but it is not limited to this. The front end and the rear end may be at the same position in the height direction, or the front end may be higher than the rear end. In this embodiment, the pair of guide rails 12 are each an arc segment of a circle with the same radius. The line connecting the centers of the pair of guide rails 12 constitutes the virtual axis of rotation when the seat portion 20 rotates relative to the base 10.

[0080] The connecting part 13 is connected between the guide rail 12 and the first crossbar 111 on the corresponding side. The connecting part 13 includes: a pair of first vertical bars 131, which extend in the vertical direction, are spaced apart in the horizontal direction, and connect the vicinity of the front end of the guide rail 12 to the vicinity of the front end of the first crossbar 111; a pair of second vertical bars 132, which extend in the vertical direction, are spaced apart in the horizontal direction, and connect the central portion of the guide rail 12 in the longitudinal direction to the central portion of the first crossbar 111 in the longitudinal direction; and a pair of third vertical bars 133, which extend in the vertical direction, are spaced apart in the horizontal direction, and connect the vicinity of the rear end of the guide rail 12 to the vicinity of the rear end of the first crossbar 111.

[0081] In addition, such as Figure 1 and Figure 2 As shown, the pair of second vertical rods 132 supporting the guide rail 12 and closer to the center of the guide rail 12 in the length direction are shorter than the first vertical rods 131 and the third vertical rods 133 supporting the guide rail 12 and closer to the two ends of the guide rail 12 in the length direction. The bottom surface of the base 10 is lower than the lowest point of the guide rail 12.

[0082] (Seating section and its drive structure)

[0083] like Figure 1 As shown, the seat 20 is a support frame for supporting the user's buttocks and thighs.

[0084] Although not shown here, in practice a seat cover is usually provided that covers the seat 20 (the part that comes into contact with the user's buttocks and thighs during use is made of materials such as leather or fabric).

[0085] In addition, such as Figure 1 , Figure 3 and Figure 5 As shown, the seat portion 20 is mounted on the guide rail 12 and slidably connected to the base 10 via the guide rail 12, rotating relative to the base 10 while sliding relative to it. Furthermore, the seat portion 20 can move along the guide rail 12, switching between a first state, an intermediate state, and a second state. In the first state, the front end of the upper surface of the seat portion 20 (in the illustrated example, it is flush with the upper surface of the top connecting rod 221; in the case of a seat cover, this corresponds to the portion of the seat cover that contacts the user's buttocks and thighs during use) is higher than the rear end (see reference). Figure 3 In the intermediate state, the front end and rear end of the upper surface of the seating portion 20 are approximately flush (see reference). Figure 4 In the second state, the front end of the upper surface of the seating portion 20 is lower than the rear end (see reference). Figure 5 In the illustrated embodiment, the upper surface of the seat 20 is positioned above both ends of the guide rail 12 throughout its entire range of motion.

[0086] Specifically, the seat portion 20 includes a seat bottom 21, a seat top 22, and a seat connecting portion 23. The seat bottom 21 has a mating portion that engages with the guide rail 12. The mating portion is movably engaged with the guide rail 12, so that the seat portion 20 will not fall off the guide rail 12 while sliding along the guide rail 12. The seat top 22 is located above the seat bottom 21. The seat connecting portion 23 connects the seat bottom 21 and the seat top 12 into one unit. More specifically, the seat bottom 21 includes a pair of bottom first links 211, a pair of bottom second links, and a protrusion 212. The pair of bottom first links 211 extend in a plane perpendicular to the left-right direction, and a pair of rollers (but not limited to this, more rollers may be provided, or sliders may be provided instead of rollers) are provided at intervals in the extending direction as mating portions, and are spaced apart in the left-right direction. The pair of bottom second links extend in the left-right direction, are spaced apart in the front-back direction, and connect the pair of bottom first links 211. The protrusion 212 protrudes downward from the bottom first link 211 and is approximately U-shaped, opening upward when viewed in the front-rear direction. The two ends of the U-shape are fixedly connected to the vicinity of the rear ends of the pair of bottom first links 211. The protrusion 212 of the seat portion 20 is located away from the center of the seat portion 20 in the front-rear direction and near the rear end of the seat portion 20. The protrusion 212 is located further downward in the vertical direction than the seat bottom 21 where the mating portion is located. The seat top 22 includes a pair of top links 221 that extend in a plane perpendicular to the left-right direction and are spaced apart in the left-right direction. The seat connection 23 includes: a pair of third links 231 spaced apart in the left-right direction, connecting the vicinity of the front end of the bottom first link 211 to the vicinity of the front end of the top link 221; and a pair of fourth links 232 spaced apart in the left-right direction, connecting the vicinity of the rear end of the bottom first link 211 to the vicinity of the rear end of the top link 221 (in the illustrated example, the length of the fourth link 232 is longer than the length of the third link 231, and when the bottom first link 211 is in a position where the length direction is consistent with the front-back direction, the upper end of the fourth link 232 is higher than the upper end of the third link 231). Thus, when the mating part slides along the guide rail 12 until the bottom first link 211 is parallel to the bottom 11 of the base 10, the front end of the seat 20 is higher than the rear end. That is, if a specific state is defined as the state in which the front and rear mating parts slide along the guide rail 12 until the bottom first connecting rod 211 is parallel to the bottom surface of the base 10, then in this specific state, the front end of the seating part 20 can be higher than the rear end. For example, the chair frame 1 can be adjusted to other massage modes from this specific state.

[0087] like Figure 5As shown, the upper ends of a pair of symmetrically arranged fourth links 232 are higher than the upper ends of a pair of symmetrically arranged third links 231, forming an inherent angle A between the upper surface and the bottom surface of the seat portion 20. When the pair of rollers (fitting parts) on the left and the pair of rollers (fitting parts) on the right are respectively placed on the guide rail 12, and the rollers slide along the guide rail 12 driven by the seat portion drive device 50, an angle B is formed between the line connecting the pair of rollers on either side and the bottom surface (ground) of the base 10. When the seat portion 20 moves to the rear end of the guide rail 12, the front end of the upper surface of the seat portion is lower than its rear end. As the rollers slide along the guide rail 12, the angle B of the fitting part gradually changes. Within the variable angle range of the angle B of the fitting part, there exists an angle larger than the inherent angle A of the seat portion. Figure 5 As shown, when the seat portion 20 is rotated to the point where the included angle B of the mating portion is larger than the inherent included angle A of the seat portion, the front end of the seat portion 20 can be lower than the rear end of the seat portion 20, making it easier to achieve the massage mode for assisting standing.

[0088] In addition, such as Figure 1 and Figure 2 As shown, the seat drive device 50 is located in the vertical direction between the bottom surface of the base 10 and the seat bottom 21.

[0089] In addition, such as Figure 1 and Figure 3 As shown, the seat drive device 50 includes a seat drive push rod 51 and a seat drive slider 52. The seat drive push rod 51 is rotatably connected to one of the base 10 and the seat 20. In the illustrated example, the front end of the seat drive push rod 51 is hinged to the base 10 and can rotate vertically relative to the hinge point with the base 10. The seat drive slider 52 can move along the seat drive push rod 51 and is rotatably connected to the other of the base 10 and the seat 20. In the illustrated example, the seat drive slider 52 is hinged to the seat 20, specifically the protrusion 212.

[0090] In the illustrated example, when the seat drive device 50 drives the seat drive slider 52, causing the seat drive slider 52 to move along the seat drive push rod 51, the protrusion 212 of the seat 20, which is hinged to the seat drive slider 52, also moves along the seat drive push rod 51 along with the seat drive slider 52. As the protrusion 212 moves along the seat drive push rod 51, it drives the seat 20 to move together. Consequently, the mating part of the seat 20 slides along the guide rail 12, and as the seat 20 slides along the arc-shaped guide rail 12, the included angle α between the upper surface of the seat 20 and the bottom surface of the base 10 continuously changes.

[0091] Furthermore, the distance between the seat bottom 21 of the seat portion 20 and the seat driving slider 52 remains constant, which is the distance by which the protrusion 22 protrudes downward from the seat bottom 21. As the seat driving slider 52 moves along the seat driving push rod 51, the protrusion 212 also drives the seat driving push rod 51 to rotate vertically. The downward protrusion of the protrusion 212 from the seat bottom 21 increases the movement distance of the seat portion 20 within the limited travel distance of the seat driving slider 52 along the seat driving push rod 51. Therefore, the required movement distance of the seat portion 20 can be achieved using a shorter seat driving push rod 51. Moreover, the downward protrusion 212 also prevents the seat bottom 21 from interfering with the seat driving device fixed to the front end of the base 10 during rotation.

[0092] In addition, the seat drive device 50 may include, for example, a motor or cylinder that drives the seat drive slider 52 to slide along the seat drive push rod 51.

[0093] (Legs and their drive mechanism)

[0094] like Figure 1 As shown, leg 30 is a support frame for supporting the user's lower limbs.

[0095] Although not illustrated here, in practice a leg cover 30 is usually provided (the part that comes into contact with the user's lower leg during use is made of materials such as leather or fabric).

[0096] In addition, the leg section 30 is, for example, rectangular in shape.

[0097] In addition, such as Figure 1 As shown, the leg drive device 60 is located in the vertical direction between the upper surface (top link 221) of the seat portion 20 and the seat bottom 21.

[0098] In addition, such as Figure 1 and Figure 3As shown, the leg drive device 60 includes a leg drive push rod 61 and a leg drive link 62. The leg drive push rod 61 has a first portion and a second portion that can extend and retract relative to the first portion. The first portion is rotatably connected to the seat portion 20. In the illustrated example, the rear end of the leg drive push rod 61 (located in the first portion) is hinged to the seat portion 20, specifically to the rearward side of the bottom second link, and can rotate circumferentially about the rearward second link. The front end of the leg drive push rod 61 (located in the second portion) is extendable and retractable relative to its rear end and is rotatably hinged to the rear end of the leg drive link 62. The front end of the leg drive link 62 is connected to the front end of the seat portion 20 and can rotate in the front-rear direction relative to the connection point with the seat portion 20. Furthermore, a roller is provided at the front end of the leg drive link 62 at a position different from the connection point with the seat portion 20. The roller of the leg drive link 62 slides in contact with the leg 30 in a manner that supports the leg 30.

[0099] Furthermore, the leg drive device 60 also includes, for example, a motor or cylinder that drives the first and second parts of the leg drive push rod 61 to extend and retract. When the leg drive device 60 drives the second part of the leg drive push rod 61 to extend and retract relative to its first part, the extension and retraction of the second part will drive the leg drive link 62 to move synchronously through a hinge with the rear end of the leg drive link 62. Moreover, a portion of the front end of the leg drive link 62 is rotatably hinged to the front side of the seat portion 20, thereby allowing the leg drive link 62 to rotate relative to the front side of the seat portion 20, while simultaneously causing the roller located at the front end of the leg drive link 62, at a position different from the hinge point, to change position in the front-back and vertical directions. This change in the position of the roller in the front-back and vertical directions causes the leg 30 supported by the roller to move accordingly. As a result, the leg 30 rotates relative to the seat 20, with the rotation connection point between the leg 30 and the seat 20 on the left and right sides as the axis of rotation, changing the leg angle γ formed by the upper surface of the leg 30 and the upper surface of the seat 20.

[0100] like Figure 1 As shown, a foot pedal 80 is provided at the front end of the leg section 30. The foot pedal 80 supports the foot massage mechanism.

[0101] Although not shown in the diagram, a cover for the foot massage mechanism (the part that comes into contact with the user's foot during use, for example, made of leather material) may also be provided at the foot pedal 80.

[0102] (Backrest and its drive structure)

[0103] like Figure 1 As shown, the backrest 40 is a support frame used to support the user's back.

[0104] Although not illustrated here, in practice a backrest cover is usually provided that covers the backrest 40 (the part that comes into contact with the user's back during use is made of materials such as leather or fabric).

[0105] In addition, the backrest 40 is, for example, rectangular in shape.

[0106] In addition, such as Figure 1 As shown, the backrest drive device 70 is located in the vertical direction between the upper surface (top link 221) of the seat portion 20 and the seat bottom 21.

[0107] In addition, such as Figure 1 As shown, the backrest drive device 70 includes a backrest drive push rod 71. The backrest drive push rod 71 has a first portion and a second portion that is extendable / retractable relative to the first portion. The first portion is rotatably connected to one of the seat portion 20 and the backrest 40. The second portion is rotatably connected to the other of the seat portion 20 and the backrest 40. In the illustrated example, the front end of the backrest drive push rod 71 (located in the first portion) is hinged to the seat portion 20, specifically to the front side of the bottom second link. The rear end of the backrest drive push rod 71 (located in the second portion) is hinged to the backrest 40.

[0108] In addition, the backrest drive device 70 may include, for example, a motor or cylinder that drives the first and second parts of the backrest drive push rod 71 to extend and retract.

[0109] like Figure 1 As shown, both the leg drive device 60 and the backrest drive device 70 have one end fixedly connected to the seat portion 20 and rotatable relative to the connection point with the seat portion 20, and their other ends are retractable. The extension and retraction of the leg drive device 60 drives the leg 30 to rotate relative to the hinge point with the seat portion 20, changing the leg angle γ formed by the upper surface of the leg 30 and the upper surface of the seat portion 20. The extension and retraction of the backrest drive device 70 drives the backrest 40 to rotate relative to the hinge point with the seat portion 20, changing the backrest angle β formed by the upper surface of the backrest 40 and the upper surface of the seat portion 20. Figure 1 In the example shown, the first part of the leg drive device 60, which is rotatably connected to the seat portion 20, is located at the rear end of the seat portion 20, and its second part is extendable towards the front end of the seat portion 20. The first part of the backrest drive device 70, which is rotatably connected to the seat portion 20, is located at the front end of the seat portion 20, and its second part extends towards the rear end of the seat portion 20. The extendable end of the leg drive device 60 and the extendable end of the backrest drive device 70 each face opposite directions.

[0110] As can be seen from the above, in this example, the connection point between the leg drive device 60 and the seat 20 is closer to the backrest 40 than the connection point between the backrest drive device 70 and the seat 20. The connection point between the backrest drive device 70 and the seat 20 is closer to the leg 30 than the connection point between the leg drive device 60 and the seat 20.

[0111] (Massage Mode)

[0112] By controlling the seat drive device 50, leg drive device 60, and backrest drive device 70, for example by changing the extension and retraction states of the drive rods of each drive device 50, 60, and 70, the chair frame 1 can form massage modes corresponding to various body postures required by the user, such as the initial state, zero gravity state, reclining state, standing state, compression state, and stretching state, and can switch between these states. This provides the user with a massage experience in different postures or body positions. In the illustrated embodiment, the extension and retraction state refers to the extension and retraction amount and speed of each drive rod.

[0113] Here, as Figure 2 As shown, the initial state of the chair frame 1 can be the state it is in when the chair frame 1 is turned on, turned off, or in standby mode, or it can be the initial state when any other massage mode is started. In the initial state, the leg angle γ formed by the upper surface of the seat portion 20 and the upper surface of the leg portion 30 is an angle that is conducive to the user sitting down and standing up, for example, less than 270° but greater than 180°. Furthermore, the backrest angle β formed by the upper surface of the seat portion 20 and the upper surface of the backrest 40 is an angle that is comfortable to sit down or can assist in standing, for example, an angle of 80°-110°. In addition, in the initial state, the upper surface of the seat portion 20 can be flush with the support surface (ground), or the front end of the upper surface of the seat portion 20 can be slightly higher or slightly lower than the rear end of the upper surface. That is, by driving the seat portion drive device 50, the seat portion 20 can be in a first state, an intermediate state, or a second state.

[0114] When adjusting the seat angle α to bring the chair frame 1 to its initial state, the seat drive device 50 drives the seat drive slider 52 to the initial position. For example, the position of the seat drive slider 52 when the bottom of the seat 20 is parallel to the bottom surface of the base 10 can be preset as a reference position, and then the seat drive slider 52 can be driven from the reference position to move to the initial position corresponding to the initial state. Alternatively, the reference position or any predetermined position can be set as the initial position.

[0115] In this embodiment, the seat driving device 50 adjusts the seat angle α by adjusting the position of the seat driving slider 52 on the seat driving push rod 51. However, it is not limited to this; other driving mechanisms can also be used to move the seat 20. For example, a telescopic moving mechanism (telescopic push rod) can be used to slide the seat 20 relative to the guide rail 12, thereby adjusting the seat angle α by the telescopic push rod's extension distance.

[0116] In addition, such as Figure 3 As shown, zero gravity refers to a posture where the user's torso and legs are at an angle of approximately 128±8 degrees. In zero gravity, the heart and knees are roughly at the same level, or the user's feet are higher than the heart. This helps promote blood circulation and reduce the burden on the heart. Simultaneously, the user's body weight is evenly distributed, preventing excessive load on any one or more parts of the body, thus minimizing stress on muscles and bones.

[0117] To achieve a zero-gravity state for the chair frame 1, the leg 30 can be rotated via the leg drive device 60, causing the leg angle γ formed between the upper surface of the seat 20 and the upper surface of the leg 30 to be any angle within a specified range. For example, the leg angle γ can be between 180° and 270°, thereby allowing the user's thigh and calf to form an inner angle of 90° (calf bent) to 180° (calf straight). Making the inner angle between 120° and 135° (i.e., the leg angle γ is between 225° and 240°) further improves user comfort. The seat 20 can be rotated via the seat drive device 50 to make the seat angle α a predetermined angle, and then the backrest 40 can be rotated via the backrest drive device 70 to make the backrest angle β an angle within a specified range, for example, making the backrest angle β any angle within 128±8 degrees. Figure 3 As shown, after adjusting the backrest angle β to a predetermined angle, the seat 20 can be adjusted by driving the sliding block 52 to increase or decrease the seat angle α as it slides along the guide rail 12, thereby adjusting the height of the front end of the seat 20 so that the front end of the seat 20 is higher than, equal to, or lower than a specific position of the backrest 40. In zero gravity, the specific position of the backrest 40 refers to the position of the backrest 40 corresponding to the user's heart. The position of the user's heart can be detected using conventional body shape detection methods.

[0118] While the chair frame 1 remains in a zero-gravity state and the user is in a zero-gravity posture, the rocking motion described later can be achieved by repeatedly rotating the seat 20 around the guide rail 12. That is, while maintaining the leg angle γ and the backrest angle β at the angles required to approach zero gravity, the seat 20 is driven to move the drive slider 52 back and forth along the seat 20 drive push rod 51. This repeatedly changes the user's center of gravity while maintaining a zero-gravity posture, increasing the user's enjoyment and tactile sensation of rocking.

[0119] In addition, such as Figure 4 As shown, the lying-flat state refers to a state in which the upper surfaces of the leg section 30, the seat section 20, and the backrest 40 are nearly aligned with the same imaginary plane through the actuation of the various drive mechanisms. In the lying-flat state, the leg angle γ and the backrest angle β are both close to 180°. For example, the difference between the leg angle γ and the backrest angle β and 180° is no more than 15°, which helps to keep the user's body in a near-lying position. In the lying-flat state, when the front end of the upper surface of the seat section 20 is slightly higher than the rear end, it is easier to keep the user's heart slightly lower than the lower limbs while maintaining a near-lying position, which helps to regulate blood circulation. In this embodiment, the seat angle is formed to be between 5° and 20°.

[0120] When the chair frame 1 needs to be in a reclining position, for example, the seat drive slider 52 can be activated first, causing the seat 20 to slide along the guide rail 12, thereby setting the seat angle α to a predetermined angle, such as 15 degrees. This seat angle α can be a pre-set predetermined angle or an angle set according to the user's selection. Then, the leg drive device 60 and the backrest drive device 70 are activated to adjust the leg angle γ and the backrest angle β to angles close to 180°. Because the seat 20, along with the legs 30 and backrest 40, can slide along the guide rail 12 as a whole, the leg angle γ and backrest angle β can be adjusted to the angles of the reclining state first, and then the seat angle α can be adjusted while maintaining the reclining state to achieve the user's desired reclining position. All drive devices can also be activated simultaneously.

[0121] As described above, the reclining state does not mean that when the user uses the chair frame 1, the user's body posture will be completely parallel to a horizontal plane or a certain plane. Rather, the user can adjust the relative positions of the legs 30, the seat 20, and the backrest 40 to achieve a user-customized reclining state. The leg angle γ and backrest angle β in the reclining state can also be preset angles or angles selected and customized by the user. For example, both the leg angle γ and backrest angle β may be within the range of 165°-195°.

[0122] While maintaining a reclining position, the user can also perform the rocking motion described later by repeatedly rotating the seat 20 around the guide rail 12. That is, while maintaining the leg angle γ and the backrest angle β at an angle close to the reclining position, the seat drive slider 52 is driven to move back and forth along the seat drive push rod 51, thereby changing the user's center of gravity while maintaining a reclining position, allowing the user to have a rocking experience while maintaining a reclining posture.

[0123] In addition, such as Figure 5 As shown, the standing-assisted state refers to a state that facilitates the user's ability to stand up from the chair frame 1. In the standing-assisted state, the front end of the upper surface of the seat portion 20 is lower than the rear end. For example, the angle α formed by the upper surface of the seat portion 20 relative to the horizontal plane (the bottom surface of the base) can be between 5° and 20°. Furthermore, the backrest 40 is in an upright position relative to the seat portion 20, for example, the backrest angle β is close to 90°. The standing-assisted state can be one of the initial states, which can be the state when the chair frame 1 is turned on, turned off, or in standby mode, or it can be the starting state when any massage mode is started.

[0124] When the chair frame 1 needs to be in a standing position, the seat drive slider 52 can be moved along the seat drive push rod 51, thereby placing the seat 20 in a second state. The leg section 30 and backrest 40 can also be driven to positions suitable for the user to stand. For example, the leg angle γ can be less than 270° but greater than 180°, and the backrest angle β can be within the range of 80°-110°. The above adjustment steps can be performed in any order. Alternatively, the seat angle α and leg angle γ can be adjusted first, followed by the backrest angle β, which provides a forward thrust to the user through the backrest, further aiding in standing.

[0125] In addition, such as Figure 6As shown, the compression state refers to adjusting the angle β between the seat portion 20 supporting the user's buttocks and the backrest 40 supporting the user's back, thereby reducing the backrest angle and gradually bringing the user's back and lower limbs closer together. This exercises the user's buttocks, abdominal muscles, and back muscles. In the compression state, the lower limbs are extended as much as possible, with the leg angle γ approaching 180° (e.g., within the range of 165°-195°). This allows the user's feet, along with the lower limbs, to tend to move closer to the back, further increasing the compression effect on the abdominal muscles and enhancing the feeling of stretching the back forward. For example, the backrest angle β can be an angle selected by the user or a preset angle, such as 90°-140°. In the compression state, it is preferable that the front end of the upper surface of the seat portion 20 is higher than the rear end. That is, while maintaining the seat portion 20 in the first state, the leg angle γ is close to 180°, and the backrest angle β is a predetermined angle.

[0126] During the period of maintaining the compression state, the rocking motion described later can also be performed by repeatedly rotating the seat 20 around the guide rail 12. That is, while maintaining the angle between the legs γ and the backrest β at the angle of the compression state, the seat drive slider 52 is driven to move back and forth along the seat drive push rod 51, thereby changing the user's center of gravity while maintaining the compression state, giving the user a different experience.

[0127] In addition, such as Figure 7 As shown, the stretched state refers to the process in which the legs 30, the seat 20 and the backrest 40 are rotated by the various drive devices, causing the legs 30 to move away from the backrest 40 and / or causing the backrest 40 to move away from the legs 30.

[0128] As described above, by controlling the seat drive 50, leg drive 60, and backrest drive 70 (in the illustrated example, this is achieved by adjusting the extension and retraction speed of the push rods to change the seat angle α, leg angle γ, and backrest angle β), the chair frame 1 can present various massage modes, providing users with various massage postures. The various massage modes can be easily switched between to change the massage posture. For example, it can also execute a first compression-stretch mode, a second compression-stretch mode, and a rocking mode.

[0129] Here, in the first compression and stretching mode, the seat 20 is adjusted to stop in the appropriate position (e.g., Figure 6(Position of the user), and then, control the leg drive device 60 and the backrest drive device 70 respectively to adjust the leg angle γ between the leg 30 and the seat 20 and the backrest angle β between the backrest 40 and the seat 20. Thus, with the user's thighs and buttocks relatively fixed in inclination relative to the horizontal plane, by changing the leg angle γ and the backrest angle β, compression and stretching of the user's legs, waist, abdomen, and back can be achieved. For example, when the leg angle γ and the backrest angle β increase simultaneously, the legs and backrest move away from each other, causing the user's lower limbs and back to unfold, achieving a stretching effect; when the leg angle γ and the backrest angle β decrease simultaneously, the legs and backrest move away from each other, causing the user's lower limbs and back to move closer, achieving a compression effect. Here, the leg angle γ can be set to be no less than 180 degrees and the backrest angle β to be no less than 90 degrees.

[0130] Furthermore, in the second compression-stretch mode, the seat portion 20 rotates relative to the base 10. For example, from Figure 6 Starting from the indicated state, the seat 20 moves from the front end of the guide rail 12 to the rear end of the guide rail 12 (the seat drive slider 52 moves from the front end of the push rod 51 to the rear end), and the seat angle α gradually changes. Simultaneously with the change in seat angle α, the backrest angle β formed by the upper surface of the seat 20 relative to the upper surface of the backrest 40 also changes. Similarly, when the backrest angle β decreases, the legs 30 and the backrest 40 move closer to each other synchronously; when the backrest angle β increases, the legs 30 and the backrest 40 move further apart synchronously. This repeated synchronous movement of the legs 30 and the backrest 40 towards and away from each other provides the user with a sensation of repeated compression and stretching.

[0131] During the compression and stretching process in the second compression and stretching mode, the seat drive device 50 and the backrest drive device 70 cooperate to increase and decrease the backrest angle β while keeping the inclination angle of the backrest 40 relative to the horizontal plane essentially constant (with a small change, for example, within 10 degrees). This allows for compression and stretching of the user's waist, abdomen, and back. For example, the leg angle γ formed by the upper surface of the seat 20 relative to the upper surface of the leg 30 can remain essentially constant. Specifically, according to this embodiment, when the seat drive device 50 moves the seat 20 backward, it causes the functional components, including the leg 30, seat 20, and backrest 40, to tend to move backward. When the seat 20 moves backward along the guide rail 12, if the backrest angle remains constant, the seat 20 will cause the backrest 40 to have a tendency to move backward and upward. During the backward and upward movement of the backrest 40, the angle of the backrest 40 relative to the horizontal plane will increase. Therefore, when the seat 10 drives the backrest 40 to slide backward and upward along the guide rail 12, the push rod of the backrest drive device 70 needs to be retracted, causing the backrest 40 to rotate downward relative to the seat 20. This increases the angle of the backrest (achieving stretching) while simultaneously reducing the angle between the backrest 40 and the horizontal plane, thus ensuring that the tilt angle of the backrest 40 relative to the horizontal plane remains unchanged. Thus, in the stretching process of this mode, by simultaneously performing "driving the backrest 40 backward and upward along the guide rail 12 via the seat 20" and "rotating the backrest 40 downward relative to the seat 20 using the push rod," the tilt angle of the backrest 40 relative to the horizontal plane remains essentially constant. Similarly, in the compression process of this mode, by simultaneously performing "driving the backrest 40 forward and downward along the guide rail 12 via the seat 20" and "rotating the backrest 40 upward relative to the seat 20 using the push rod," the tilt angle of the backrest 40 relative to the horizontal plane remains essentially constant. That is, the tilt angle of the backrest 40 as it slides along the guide rail 12 is absorbed by the rotation angle of the backrest 40 relative to the seat 20, thereby ensuring that the tilt angle of the backrest 40 relative to the horizontal plane remains basically unchanged during the compression and stretching process.

[0132] Furthermore, in rocking mode, the seat 20 rotates relative to the base 10, while the leg angle γ and backrest angle β remain constant. That is, by changing the seat angle α, the functional components are pushed. When the seat 20 reciprocates around a position where the bottom surface of the seat is parallel to the bottom surface of the base, the entire functional component also reciprocates along the guide rail 12, achieving a rocking mode for the entire functional component. Since the leg angle γ and backrest angle β can be set to any angle, the chair frame 1 can rock in any massage mode, allowing the user to rock along the guide rail 12 in a corresponding posture. Additionally, the leg drive device 60 and the backrest drive device 70 are both hinged to the seat 20 and extend / retract relative to it, while the seat drive device 50 is hinged to the base 10 below the seat 20. The driving actions of the leg drive device 60 and the backrest drive device 70 do not interfere with the driving action of the seat drive device 50. Therefore, when the seating drive device 50 drives the entire functional component into rocking mode, both the leg angle and the backrest angle are adjustable. That is, during the operation of rocking mode, the leg drive device 60 and the backrest drive device 70 can be controlled to change the leg angle and / or the backrest angle.

[0133] Therefore, when adjusting the chair frame 1 to any of the aforementioned massage modes (initial state, zero gravity state, reclining state, standing state, compression state, and stretching state, etc.), the order in which the leg angle γ, backrest angle β, and seat angle α are adjusted is not limited; that is, the chair frame 1 can be adjusted to the desired massage mode. For example, when switching from the reclining state to the zero gravity state, the leg angle γ and backrest angle β can be adjusted after the seat angle α is converted to the zero gravity state angle α, or the leg angle γ and backrest angle β can be adjusted to the angles required for the zero gravity state, and then the seat angle α can be changed by driving the seat drive device to switch to the zero gravity state. Of course, adjustments can also be made simultaneously. When switching from any massage mode to another, the seat angle α can be easily changed by rotating the seat 20 relative to the base 10 while maintaining the leg angle γ and backrest angle β. Furthermore, while keeping the leg angle γ and backrest angle β constant (i.e., keeping the user's posture unchanged), the user's center of gravity can be easily and controllably altered by changing the seat angle, thereby adjusting the massage sensation. This is because even in the same posture, when the user's center of gravity changes relative to the chair frame 1, the massage intensity applied from the chair frame 1 to the user will differ, thus providing different sensations.

[0134] Below, with Figure 3 The example of zero gravity and Figure 6Taking the compression state as an example, we can illustrate the change in massage mode of chair frame 1. For example, Figure 3 The angle α between the seat and the seat in zero gravity state shown Figure 6 The included angle α of the seat portion under the extrusion state shown is the same.

[0135] When adjusting from a zero-gravity state to a compression state, the leg angle γ decreases from large to small, the backrest angle β decreases from large to small, and the seat angle α remains unchanged. When the leg drive device drives the leg 30 to rotate relative to the seat 20, the leg angle γ is adjusted from a large angle to a smaller leg angle γ close to 180° required for the compression state. As a result, the user's lower limbs are gradually raised and straightened from a bent state. When the backrest drive device drives the backrest 40 to rotate relative to the seat 20, the backrest angle β is adjusted from a large angle to a smaller angle for the compression state. The user's back and waist and abdomen between the buttocks change from a relatively relaxed posture to a relatively compressed posture, which compresses the muscle groups of the back and waist and abdomen.

[0136] When adjusting from a compressed state to a zero-gravity state, the movement of the chair frame 1 is the opposite of the above. As the leg angle γ increases, the user's lower limbs gradually bend from straight, and the user's thighs are stretched. As the backrest angle β increases, the user's back and waist / abdomen are stretched again, thus achieving a stretching effect on the body. If the leg drive mechanism and the backrest drive mechanism are driven to increase the leg angle γ and the backrest angle β simultaneously, the thighs, buttocks, and waist / abdomen can be stretched simultaneously, thereby enhancing the stretching effect. When the seat 20 is in the first state (e.g., the seat angle α is 15-50°), that is, when the front of the user's thigh (knee side) is higher than the user's buttocks, if the leg angle γ and the backrest angle β gradually increase, the user's center of gravity moves further away from the thighs as the backrest angle β increases, thereby enhancing the stretching effect on the thighs, waist / abdomen, and back. As mentioned above, the compression state, zero gravity state, etc., can be set as independent massage states, or they can be switched with other massage states, providing the user with a massage-like sensation during the transition. The switching between different massage states can be repeated.

[0137] In this example, the upper surface of the seat portion 20 can be the surface corresponding to the part of the seat portion cover that contacts the user's buttocks and thighs during use, or it can be the plane where the seat top 22 is located. In this example, the upper surface of the backrest 40 can be the surface corresponding to the part of the backrest portion cover that contacts the user's back during use, or it can be the front side of the backrest 40. In this example, the upper surface of the leg portion 30 can be the surface corresponding to the part of the leg portion cover that contacts the user's calf during use, or it can be the front side of the leg portion 30.

[0138] In the above embodiments, the adjustment method is not limited when adjusting different angles. For example, an angle sensor can be used for measurement and adjustment, or the adjustment can be calibrated and calculated by moving the push rod of the drive device.

[0139] The chair frame 1 according to this embodiment includes: a base 10; a seat portion 20 rotatably supported on the base 10; a seat portion drive device 50 that drives the seat portion 20 to rotate relative to the base 10, thereby changing the seat portion angle α between the seat portion 20 and the base 10; a backrest 40 rotatably connected to the seat portion 20; and a backrest drive device 70 that drives the backrest 40 to rotate relative to the seat portion 20, thereby changing the backrest angle β between the backrest 40 and the seat portion 20. Therefore, when the user sits on the seat portion 20 with their back against the backrest 40, the rotation of the backrest 40 relative to the seat portion 20 driven by the backrest drive device 70 further achieves stretching and compression between the waist and abdomen (and thighs) and the calves to the feet, thereby achieving stretching and compression of the multi-joint area from the torso to the feet. Furthermore, when the seat 20 rotates relative to the base 10 under the drive of the seat drive device, it can drive the functional components, including the legs 30, the seat 20 and the backrest 40, to move back and forth under the support of the base 10. This allows the user's body to be held in any stretched or compressed posture while the center of gravity of the body can be changed, thus enabling a variety of massage modes.

[0140] Furthermore, according to the chair frame 1 of this embodiment, the angle between the user's torso and legs, and the angle between the legs and feet, can be adjusted. The body can also be rocked as a whole according to its posture, thereby changing the body's center of gravity while maintaining a fixed posture and enhancing the corresponding massage experience. For example, when the body is in a zero-gravity state, if the seat 20 is driven to rock the chair frame 1, the floating sensation from the rocking enhances the comfort in the zero-gravity state, allowing the user to experience a light, floating, and gentle swaying sensation, further enhancing relaxation and comfort. Similarly, if the body is adjusted to a lying position and the seat 20 is then driven to rock the chair frame 1, the same floating and rocking sensation can be provided, aiding in relaxation.

[0141] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments.

[0142] For example, in the above embodiments, the chair frame 1 can form a zero-gravity state, a lying flat state, a standing state, a compression state, and a stretched state, but it is not limited to these. The chair frame 1 only needs to be able to form some of the zero-gravity state, lying flat state, standing state, compression state, and stretched state.

[0143] Furthermore, in the above embodiments, the chair frame 1 can perform the first compression stretching mode, the second compression stretching mode, and the rocking mode, but it is not limited to this. The chair frame 1 may also perform only some of the first compression stretching mode, the second compression stretching mode, and the rocking mode, or it may perform other modes to replace the above modes.

[0144] Furthermore, in the above embodiments, the postures of the seat 20, legs 30, and backrest 40 in the initial state can be set according to the user's usage habits, and presented and stored as the initial state customized for the user. Similarly, the postures of the seat 20, legs 30, and backrest 40 in other states such as zero gravity state and lying flat state can also be customized by fine-tuning, thereby making it easier for users to explore more comfortable massage postures.

[0145] Furthermore, in the above embodiment, the upper surface of the seat portion 20 is positioned above the two ends of the guide rail 12 throughout the entire range of motion of the seat portion 20. However, this is not a limitation. Alternatively, the upper surface of the seat portion 20 may be positioned above the two ends of the guide rail 12 only within a portion of the range of motion of the seat portion 20. Or, it may be configured such that the upper surface of the seat portion 20 is positioned below the two ends of the guide rail 12 throughout the entire range of motion of the seat portion 20.

[0146] Furthermore, in the above embodiments, the specific structures of the base 10, legs 30, backrest 40, seating drive device 50, leg drive device 60, and backrest drive device 70 can be appropriately changed as needed.

[0147] Furthermore, in the above embodiment, the base 10 has a guide rail 12 and the seating portion 20 has a mating portion that can be movably engaged with the guide rail 12, but it is not limited to this. It is also possible that the seating portion 20 has a guide rail 12 and the base 10 has a mating portion that can be movably engaged with the guide rail 12.

[0148] Furthermore, in the above embodiments, the leg part 30 and the leg drive device 60 may be omitted, and the pedal part 80 may also be omitted.

[0149] It should be understood that within the scope of this invention, the various parts of the embodiments can be freely combined, or the various parts of the embodiments can be appropriately modified or omitted.

Claims

1. A chair frame, characterized in that, comprising: a base; a seat portion rotatably supported by the base; a seat portion drive device connected to the base and the seat portion respectively and driving the seat portion to rotate relative to the base; a back portion rotatably connected to the seat portion; and a back portion drive device connected to the seat portion and the back portion respectively and driving the back portion to rotate relative to the seat portion.

2. The chair frame according to claim 1, wherein: the base and the seat portion are connected via a guide rail to slide, when the seat portion or the base moves along the guide rail, the seat portion moves relative to the base while the seat portion angle changes.

3. The chair frame according to claim 2, wherein: at least one of a first state and a second state is present during movement of the seat portion or the base along the guide rail, in the first state, the front end of the upper surface of the seat portion is higher than the rear end, in the second state, the front end of the upper surface of the seat portion is lower than the rear end, an intermediate state is present during movement of the seat portion or the base along the guide rail, in the intermediate state, the front end of the upper surface of the seat portion is substantially flush with the rear end.

4. The chair frame according to claim 2, wherein: the guide rail is formed in an arc shape with the central portion lower than the two end portions, the upper surface of the seat portion is higher than the two end portions of the guide rail within the entire movement range of the seat portion. further comprising:

5. The chair frame of claim 1, wherein a leg portion rotatably connected to the seat portion; and a leg portion drive device connected to the seat portion and the leg portion respectively and driving the leg portion to rotate relative to the seat portion.

6. The chair frame according to claim 5, wherein: the seat portion drive device is located between the bottom surface of the base and the bottom surface of the seat portion in the up-down direction, the leg portion drive device and the back portion drive device are located between the upper surface of the seat portion and the bottom surface of the seat portion in the up-down direction.

7. The chair frame according to claim 5, wherein: the leg portion drive device comprises: a leg portion drive push rod having a first portion and a second portion that are movable relative to each other, the first portion being rotatably connected to the seat portion; and a leg portion drive link having a rear end rotatably connected to the second portion and a front end having a roller that supports the leg portion.

8. The chair frame according to claim 1, wherein: the seat portion drive device comprises: a seat portion drive push rod rotatably connected to one of the base and the seat portion; and a seat portion drive slider movable along the seat portion drive push rod and rotatably connected to the other of the base and the seat portion.

9. The chair frame according to claim 1, wherein: the back portion drive device comprises a back portion drive push rod, ​ ​ The backrest part driving push rod has a first part and a second part capable of relative movement, the first part is rotatably connected with one of the seat part and the backrest part, The second part is rotatably connected with the other of the seat part and the backrest part.

10. The chair frame according to claim 5, wherein At least one of a zero-gravity state, a standing-assistance state, a lying state, a squeezing state, and a stretching state is provided, At the zero-gravity state, the seat part has a predetermined angle, the leg part has an arbitrary angle within a predetermined range, and the backrest part has an arbitrary angle within a predetermined range, At the standing-assistance state, the seat part has an angle such that the front end of the upper surface of the seat part is lower than the rear end or is substantially flush with the rear end, At the lying state, the seat part has a predetermined angle, and the leg part and the backrest part are each close to 180°, At the squeezing state, the seat part has a predetermined angle, the leg part is controlled to rotate relative to the front end of the seat part and gradually approach the backrest part from above the front end of the seat part, and the backrest part is controlled to rotate relative to the rear end of the seat part and gradually approach the leg part from above the rear end of the seat part, At the stretching state, the leg part and the backrest part are away from each other.

11. The chair frame according to claim 5, wherein At least one of a first squeezing-stretching mode, a second squeezing-stretching mode, and a swinging mode is provided, At the first squeezing-stretching mode, the seat part has a predetermined angle, the leg part and the backrest part are controlled to rotate relative to the seat part to change the leg part angle and the backrest part angle, respectively, and the synchronous approach and the synchronous away are repeated, At the second squeezing-stretching mode, the leg part has a predetermined angle, the seat part is rotated relative to the base to change the seat part angle, and the backrest part angle is also changed, At the swinging mode, the seat part is rotated relative to the base to change the seat part angle, and the functional assembly including the leg part, the seat part, and the backrest part is reciprocated relative to the base.

12. A massaging device, characterized by The chair frame according to any one of claims 1 to 11 is provided.

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