A multifunctional chair

Abstract

The present invention discloses a multifunctional chair, comprising: a first frame unit; a first supporting unit connected to the first connection position of the first frame unit, the height of the end of the first frame unit being lower than the height of the first connection position; a first abutting unit arranged on the first frame unit near the first connection position; a second frame unit rotatably connected to the rear of the first frame unit, the rotatable connection enabling the second frame unit to move between a first posture for a reclining chair or a seat and a second posture for a fitness equipment; a second abutting unit arranged on the second frame unit. The present invention provides a multifunctional chair with various functions, which can be used as a seat, a reclining chair and a fitness equipment, and has a simple structure, simple and quick operation, convenient use, and is easy to carry and transport.

Description

Technical Field

[0001] The invention relates to the field of daily necessities, in particular to a multifunctional chair. Background Art

[0002] A recliner is a chair with a long backrest that tilts backwards, on which people can lie down and rest. With the improvement of people's living standards, recliners have become a common leisure product for people at home, in offices, in public places, outdoors, etc. Most existing recliners consist of a seat and a backrest that is tilted with the seat. Although people can lie down and rest on it to meet their daily needs, they have a single function and no fitness function.

[0003] On April 10, 2013, China authorized and announced a utility model patent entitled "A Folding Fitness Recliner" (Announcement No.: CN202858399U), which includes a backrest, armrests, seat, footrest, footrest bracket, X-shaped chair bracket and connecting frame, wherein the backrest is connected to the seat, the footrest is movably connected to the seat, a multi-position card slot is provided in the card-type armrest, one end of the card slot extends out of the armrest and is connected to the side of the backrest, and a movable The support rod is hinged to the connecting frame, and the upper end of the movable support rod is provided with a pin and a slot for clamping; the rods on the two upper end surfaces of the chair bracket are movably connected to the long slots arranged on both sides of the connecting frame, and the footboard bracket is hinged to the foot pad; it also includes a pulley, a presser foot bent rod, a tension spring, and a pulley support rod; the upper end of the pulley support rod is hinged to the middle part of the back of the backboard, and the lower end is fixedly connected to the midpoint of the coupling shaft of a pair of pulleys; a tension spring is provided at the lower part of the back of the backboard and connected to the lower end of the pulley support rod; the two ends of the presser foot bent rod are movably connected to the two outer ends of the foot pad.

[0004] This patent adds foldable and fitness functions to the traditional reclining chair, making it more ideal for use. However, the following shortcomings still exist: (1) There are many components and a complex structure. The chair is relatively heavy as a whole, making it inconvenient to use, pack, carry and transport; (2) The front and rear heights of the seat are consistent. When the chair is in the reclining state, only the buttocks are relatively close to the seat, which is not very comfortable; the backrest and the seat cannot be adjusted to the support range required for the fitness state. When used for fitness, it is inconvenient to use and even affects the stretching movements of the legs, waist, abdomen, back, shoulders, neck and other parts; (3) When switching the reclining chair to the fitness state, the footrest bracket and the X-shaped chair bracket need to be folded up one by one, and the foot presser rod needs to be bent upward. The operation is complicated, time-consuming and laborious. Summary of the invention

[0005] The present invention aims at the deficiencies in the prior art and provides a multifunctional chair with multiple functions, which can be used as a seat, a reclining chair and a fitness equipment, and has a simple structure, simple and quick operation, convenient use, and is easy to carry and transport.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A multifunctional chair, comprising:

[0008] A first frame unit, wherein the first frame unit is provided with a head end and a tail end;

[0009] A first supporting unit, used to support the first frame unit, the first supporting unit is connected to the first connecting position of the first frame unit, and the height of the end of the first frame unit is lower than the height of the first connecting position;

[0010] A first abutting unit is arranged on the first frame unit and is arranged near the first connecting position;

[0011] A second frame unit is arranged at the rear of the first frame unit, the second frame unit is rotatably connected to the first frame unit, the rotatable connection between the second frame unit and the first frame unit can move between a first posture for a recliner or a seat and a second posture for a fitness equipment, the second frame unit is in the first posture when there is an angle with the first frame unit, and the second frame unit is in the second posture when the end of the second frame unit overlaps with the end of the first frame unit;

[0012] The second abutting unit is arranged on the second frame unit.

[0013] Preferably, the first frame unit comprises a frame structure 1 arranged in parallel, which is used for installing and supporting the first abutting unit.

[0014] Preferably, the first frame unit includes a frame structure 1 and a transverse support structure 1 which are arranged in parallel, and the transverse support structure 1 is arranged on the frame structure 1 at intervals, and the frame structure 1 and the transverse support structure 1 are used for the installation and support of the first abutment unit.

[0015] Preferably, the frame structure is configured as an integrated structure.

[0016] Preferably, the frame structure is configured as a split structure, including:

[0017] Frame part 1;

[0018] The frame part 2 is pivotally connected to the frame part 1 to change the angle formed between the frame part 1 and the frame part 2, and the frame part 1 and the frame part 2 are adjusted to the unfolded and folded states.

[0019] Preferably, the second frame unit is connected to the first frame unit via a third rotating assembly, so as to adjust the second frame unit to a first posture and / or a second posture relative to the first frame unit, and / or lock the second frame unit in the first posture and / or the second posture.

[0020] Preferably, the second posture is formed when the second frame unit moves along the end direction of the first frame unit through the rotation of the third rotating assembly until it overlaps with the end of the first frame unit.

[0021] Preferably, the first posture is formed when the second frame unit moves along any direction of the head end or the tail end of the first frame unit through the rotation of the third rotating assembly to form an angle with the first frame unit.

[0022] Preferably, the second frame unit comprises a second frame structure arranged in parallel, which is used for installing and supporting the second abutting unit.

[0023] Preferably, the second frame unit includes a frame structure 2 and a transverse support structure 2 which are arranged in parallel, the transverse support structure 2 is arranged on the frame structure 2 at intervals, and the frame structure 2 and the transverse support structure 2 are used for the installation and support of the second abutment unit.

[0024] Preferably, the third rotating assembly comprises:

[0025] A ratchet with a ratchet arm, wherein the ratchet arm is connected to the frame structure 2 and / or the lateral support structure 2;

[0026] A rotating arm, one end of which is hinged to the ratchet through a ratchet shaft, and the other end of which is connected to the frame structure 1 and / or the lateral supporting structure 1;

[0027] A non-return pawl, hinged to the rotating arm via a non-return pawl shaft, and used to prevent the ratchet wheel from rotating;

[0028] A return member, sleeved on the ratchet shaft, used for driving the non-return pawl to leave the ratchet;

[0029] A reset member is used for resetting the non-return pawl.

[0030] Preferably, the third rotating assembly comprises:

[0031] A connecting member three is connected to the frame structure two;

[0032] One end of the rotating shaft three is connected to the frame structure one, and the other end is connected to the connecting member three.

[0033] Preferably, the device further comprises a third supporting unit for supporting the second frame unit, wherein the third supporting unit is arranged below the second frame unit, and the lower end of the third supporting unit abuts against the first frame unit and / or the second supporting unit.

[0034] Preferably, the third supporting unit comprises:

[0035] A third support member, the upper end of which is rotatably connected to the frame structure 2;

[0036] And / or a third adjusting component, used for adjusting the position of the third support member relative to the first frame unit, and the third adjusting component is arranged on the first frame unit and / or the second support unit.

[0037] Preferably, the third adjustment component includes an adjustment member three, and the adjustment member three is provided with a plurality of adjustment channels three for supporting the lower end of the third support member.

[0038] Preferably, the adjustment channel three is configured as a groove-shaped structure with an open upper end, for abutment of the lower end of the third support member.

[0039] Preferably, the third supporting unit comprises:

[0040] An upper third support member, the upper end of which is rotatably connected to the frame structure 2;

[0041] A lower third support member connected to the upper third support member, wherein the lower end of the lower third support member is connected to the first frame unit and / or the second support unit;

[0042] By changing the relative length between the upper third support member and the lower third support member, the height position between the second frame unit and the installation end surface of the installation medium is changed.

[0043] Preferably, the upper third support member and the lower third support member are arranged relative to each other to form a retractable structure.

[0044] Preferably, the first connection position is arranged close to the head end of the first frame unit and / or coincides with the head end of the first frame unit.

[0045] Preferably, at least one of the first supporting units is provided, and the first supporting unit is arranged at an angle to the mounting end surface.

[0046] Preferably, the first support unit comprises at least two first support members arranged in parallel, the upper ends of the first support members are connected to the first connecting positions of the first frame unit, and the lower ends are used to abut against the installation end surface of the installation medium.

[0047] Preferably, the first support member is provided as an integral structure.

[0048] Preferably, the first support member is configured as a split structure, comprising:

[0049] a first support portion;

[0050] The second support part is pivotally connected to the first support part to change the angle formed between the first support part and the second support first support part, and the first support part and the second support are adjusted to the unfolded and folded states.

[0051] Preferably, the first support member is configured as a split structure, comprising:

[0052] a first support portion;

[0053] The second support part is arranged at the lower part of the first support part, and the relative length between the first support part and the second support part is changed, so that the height position between the first frame unit and the installation end surface of the installation medium is changed.

[0054] Preferably, the first support portion and the second support portion are arranged relative to each other to form a retractable structure.

[0055] Preferably, the first support unit is rotatably connected to the first frame unit via a first rotating assembly.

[0056] Preferably, the first rotating assembly comprises:

[0057] A connecting member 1 connected to a frame structure 1;

[0058] The first rotating shaft has one end connected to the first supporting member and the other end connected to the first connecting member.

[0059] Preferably, it further comprises a positioning unit arranged on the first supporting unit, and when the multifunctional chair is in the second posture, the positioning unit is used for placing and / or positioning the feet or legs of a human body.

[0060] Preferably, the positioning unit comprises:

[0061] Positioning connecting members arranged at intervals, wherein both ends of the positioning connecting members are respectively connected to the first supporting member;

[0062] And / or a positioning adjustment member, which is sleeved on the positioning connection member, and the outer end of the positioning adjustment member is formed with a positioning end surface for the foot or leg of the human body to abut against.

[0063] Preferably, the positioning adjustment member is configured as a flexible structure.

[0064] Preferably, it further comprises a second supporting unit, wherein the second supporting unit is connected to the end of the first frame unit and / or to the main body close to the end.

[0065] Preferably, it further comprises a second supporting unit, wherein the second supporting unit is formed by the end of the first frame unit and / or the main body of the first frame unit close to the end.

[0066] Preferably, at least one of the second supporting units is provided, and the second supporting unit is arranged at an angle to the mounting end surface.

[0067] Preferably, the second supporting unit comprises at least two second supporting members arranged in parallel, the upper ends of the second supporting members are connected to the first frame unit, and the lower ends are used to abut against the installation end surface where the medium is placed.

[0068] Preferably, the second support member is provided as an integral structure.

[0069] Preferably, the second support member is configured as a split structure, comprising:

[0070] a third support portion;

[0071] The fourth support portion is pivotally connected to the third support portion to change the angle formed between the third support portion and the fourth support portion, and the third support portion and the fourth support portion are adjusted between the unfolded state and the folded state.

[0072] Preferably, the second support member is configured as a split structure, comprising:

[0073] a third support portion;

[0074] The fourth support portion is arranged at the lower part of the third support portion, and the relative length between the third support portion and the fourth support portion is changed, so that the height position between the first frame unit and the installation end surface of the installation medium is changed.

[0075] Preferably, the third support portion and the fourth support portion are arranged relative to each other to form a retractable structure.

[0076] Preferably, the second support unit is rotatably connected to the first frame unit via a second rotating assembly.

[0077] Preferably, the second rotating assembly comprises:

[0078] Connecting member 2, connected to frame structure 1 and / or the second supporting member;

[0079] One end of the rotating shaft 2 is connected to the frame structure 1, and the other end is connected to the connecting member 2.

[0080] Preferably, the second support unit further comprises at least one second reinforcement member arranged between the second support members to reinforce the second support unit.

[0081] Preferably, it also includes a handrail structure, which is arranged at the head end of the first frame unit.

[0082] Preferably, the armrest structure is rotatably connected to the first frame unit.

[0083] Preferably, the first abutment unit comprises a first abutment structure for a human body to sit or lie on, and the first abutment structure is formed by extending from near and / or from the first connection position in a direction close to the end of the first frame unit.

[0084] Preferably, the first abutting structure is connected to frame structure one by wrapping frame structure one in its end portion and / or in its entirety.

[0085] Preferably, the first abutting structure is connected to the frame structure 1 via a first connecting component, and the first connecting component is configured as a snap-fit ​​structure and / or a hook structure and / or an adhesive structure.

[0086] Preferably, the second abutment unit includes a second abutment structure for a human body to sit or lie on, and the second abutment structure is arranged on the second frame unit and extends from one end close to the second frame unit to the other end close to the first frame unit.

[0087] Preferably, the second abutting structure is connected to the frame structure 2 by wrapping the end portion and / or the entire frame structure 2.

[0088] Preferably, the second abutting structure is connected to the frame structure 2 via a second connecting component, and the second connecting component is configured as a snap-fit ​​structure and / or a hook structure and / or an adhesive structure.

[0089] Preferably, the first abutting structure and / or the second abutting structure is configured as a cloth structure and / or a leather structure and / or a bamboo structure and / or a rattan structure and / or a plastic structure and / or a wooden structure.

[0090] Preferably, the frame structure 1 is configured as an upward convex arc structure.

[0091] The present invention achieves the following beneficial effects:

[0092] (1) The multifunctional chair of the present invention can obtain two usage postures, namely, a first posture as a reclining chair or a seat and a second posture as a fitness equipment, by adjusting the angle relationship between the second frame unit and the first frame unit. The chair can be used for two purposes. In particular, when the chair is adjusted to the second posture as a fitness equipment, the chair has the functions of current fitness equipment such as sit-ups and push-ups. The angle of the second frame unit relative to the first frame unit can be adjusted as needed. The chair can be selected or switched at any time to perform fitness, reclining chair or seat, and the operation is convenient.

[0093] (2) The multifunctional chair of the present invention has a support frame composed of a first frame unit and a second frame unit, and a first abutting unit and a second abutting unit are arranged on the first frame unit and the second frame unit. When the second frame unit is rotated relative to the first frame unit, the angle between the first abutting unit and the second abutting unit is adjusted accordingly, which is convenient to adjust. The switch between a fitness chair, a reclining chair or a seat can be completed with one button, and the structure of the multifunctional chair is greatly simplified. The operation is simple and fast, and the installation and disassembly are convenient.

[0094] (3) The multifunctional chair of the present invention has a first frame unit and a second frame unit that can be adjusted to an overlapping state. On the one hand, the overall structure of the multifunctional chair can be reduced, which is convenient for packaging, carrying and transportation. On the other hand, when the first frame unit and the second frame unit are adjusted to an overlapping state, they can be used as fitness equipment for sit-ups, push-ups and the like, which has a relatively large stretching range for the legs, waist, abdomen, back, shoulders, neck and the like, and the second frame unit will not hinder the stretching action, so various stretching actions can be performed freely. Moreover, the first support unit and the second support unit can be folded relative to the first frame unit, thereby further reducing the overall structure of the multifunctional chair, making packaging, carrying and transportation convenient and greatly reducing the cost.

[0095] (4) The multifunctional chair of the present invention has a first supporting unit connected to the first frame unit at the first connecting position, so that the height of the end of the first frame unit is lower than its height at the first connecting position. Therefore, when the multifunctional chair is in the first posture of a reclining chair or a seat, the buttocks, legs and other parts can fit with the first abutting unit on the first frame unit, thereby increasing the contact area between the human body and the first abutting unit and dispersing the stress points, thereby making the user more comfortable and relaxed. When the multifunctional chair is in the second posture of fitness equipment, the second frame unit is overlapped on the rear of the first frame unit, so that the second abutting unit, the first abutting unit and the first supporting unit together form the support range required for fitness, that is, the stretching range of the legs, waist, abdomen, back, shoulders, neck and other parts is increased when doing push-ups, sit-ups and other fitness exercises, completely replacing the existing independent fitness equipment.

[0096] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0098] Figure 1 This is a schematic diagram of the overall structure of the multifunctional chair in a first posture according to the first embodiment of the present invention.

[0099] Figure 2 for Figure 1 Explosion diagram.

[0100] Figure 3 This is a partial structural schematic diagram of the multifunctional chair in a first posture according to the first embodiment of the present invention.

[0101] Figure 4 This is a schematic diagram of the overall structure of the multifunctional chair in the second posture according to the first embodiment of the present invention.

[0102] Figure 5 for Figure 4 Explosion diagram.

[0103] Figure 6 This is a partial structural schematic diagram of the multifunctional chair in the second posture according to the first embodiment of the present invention.

[0104] Figure 7 This is a schematic diagram of the internal structure of the third rotating component of the multifunctional chair according to the first embodiment of the present invention.

[0105] Figure 8 This is a schematic structural diagram of the first rotating assembly of the multifunctional chair according to the first embodiment of the present invention.

[0106] Fig. 9 It is a structural schematic diagram of the first supporting unit and a part of the frame structure 1 of the multifunctional chair according to the first embodiment of the present invention.

[0107] Fig.10 It is a structural schematic diagram of the second supporting unit and a part of the frame structure 2 of the multifunctional chair according to the first embodiment of the present invention.

[0108] Fig.11 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the second embodiment of the present invention.

[0109] Fig.12 This is a partial structural schematic diagram of the multifunctional chair in the second posture according to the second embodiment of the present invention.

[0110] Fig.13 for Fig.11 Schematic diagram of the enlarged structure at point A in the middle.

[0111] Fig.14 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the third embodiment of the present invention.

[0112] Fig.15 This is a partial structural schematic diagram of the multifunctional chair in the second posture according to the third embodiment of the present invention.

[0113] Fig.16This is a schematic structural diagram of the third rotating assembly of the multifunctional chair according to the third embodiment of the present invention.

[0114] Fig.17 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the fourth embodiment of the present invention.

[0115] Fig.18 This is a structural schematic diagram of a multifunctional chair in a folded and collapsed state according to a fourth embodiment of the present invention.

[0116] Fig.19 It is a structural schematic diagram of the pivot structure 1 of the multifunctional chair according to the fourth embodiment of the present invention.

[0117] Fig. 20 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the fifth embodiment of the present invention.

[0118] Fig.21 This is a structural schematic diagram of a multifunctional chair in a folded and collapsed state according to a fifth embodiment of the present invention.

[0119] Fig. 22 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the sixth embodiment of the present invention.

[0120] Fig.23 This is a structural schematic diagram of a multifunctional chair in a folded and collapsed state according to a sixth embodiment of the present invention.

[0121] Fig.24 This is a partial structural schematic diagram of the multifunctional chair in the first posture according to the seventh embodiment of the present invention.

[0122] Fig.25 This is a schematic structural diagram of the second rotating assembly of the multifunctional chair according to the seventh embodiment of the present invention. DETAILED DESCRIPTION

[0123] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0124] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0125] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0126] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0127] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0128] like Figure 1-10As shown, as a first embodiment of the present invention, a multifunctional chair is disclosed, including a first frame unit 1, a second frame unit 2, a first support unit 3, and a first abutment unit 13 and a second abutment unit 23 respectively arranged on the first frame unit 1 and the second frame unit 2, wherein the first frame unit 1 is provided with a head end 101 and a tail end 102, the first support unit 3 is connected to the first connection position 103 of the first frame unit 1, and is used to support the first frame unit 1, so that the height of the tail end 102 of the first frame unit 1 is lower than the height at the first connection position 103, the first abutment unit 13 is arranged near the first connection position 103, and is mainly used for contact and support of the buttocks, legs and other parts, the second frame unit 2 is arranged at the rear of the first frame unit 1, and is rotatably connected to the first frame unit 1, and the rotatable connection can make the multifunctional chair move between a first posture as a recliner or a seat and a second posture as a fitness equipment, and the second abutment unit 23 is arranged on the second frame unit 2, and is mainly used for contact and support of the waist, back, shoulders and other parts. The multifunctional chair of the present embodiment can obtain two usage postures, a first posture as a reclining chair or a seat and a second posture as a fitness equipment, by adjusting the angular relationship between the second frame unit 2 and the first frame unit 1. The chair has two uses, especially when adjusted to the second posture of fitness equipment, it has the functions of fitness equipment such as sit-ups and push-ups, and the angle of the second frame unit 2 relative to the first frame unit 1 can be adjusted arbitrarily as needed, for example, it can be used as a seat at 90 degrees, as a reclining chair at 135 degrees, and as a fitness equipment at 180 degrees, etc., and the selection or switching of fitness or reclining chair or seat can be carried out at any time, and the operation is convenient; the supporting frame of the multifunctional chair in the present embodiment is composed of the first frame unit 1 and the second frame unit 2, and the first abutting unit 13 and the second abutting unit 2 are provided on the first frame unit 1 and the second frame unit 2. The leaning unit 23 is rotated relative to the first frame unit 1, and the angle between the first leaning unit 13 and the second leaning unit 23 is adjusted accordingly, which is convenient to adjust, and the switching between fitness or reclining chair or seat can be completed with one button, and the structure of the multifunctional chair is greatly simplified, and the operation is simple and fast, and the installation or disassembly is convenient; the first frame unit 1 and the second frame unit 2 in this embodiment can be adjusted to an overlapping state, on the one hand, the overall structure of the multifunctional chair can be reduced, which is convenient for packaging, carrying and transportation, and greatly reduces the cost; on the other hand, when the first frame unit 1 and the second frame unit 2 are adjusted to an overlapping state, they can be used as fitness equipment such as sit-ups and push-ups, and the legs, waist, abdomen, back, shoulders, neck and other parts have a relatively large stretching range, and the second frame unit 2 will not hinder the stretching action, and various stretching actions can be freely performed;Since the first support unit 3 in this embodiment is connected to the first connection position 103 of the first frame unit 1, the height of the end 102 of the first frame unit 1 is lower than its height at the first connection position 103, so that when the multifunctional chair is in the first posture of a reclining chair or a seat, the buttocks, legs and other parts can fit with the first abutting unit 13 on the first frame unit 1, increasing the contact area between the human body and the first abutting unit 13, dispersing the force points, and thus being more comfortable and relaxing; when the multifunctional chair is in the second posture of fitness equipment, the second frame unit 2 is overlapped at the rear of the first frame unit 1, so that the second abutting unit 23 and the first abutting unit 13 Together with the first support unit 3, it forms the support range required for fitness, that is, it increases the stretching range of the legs, waist, abdomen, back, shoulders, neck and other parts when used for fitness needs such as push-ups and sit-ups, and completely replaces the existing independent fitness equipment. Of course, when the second frame unit 2 is superimposed on the rear of the first frame unit 1, the angle between the second abutting unit 23 and the first abutting unit 13 can be equal to 180 degrees, that is, the second frame unit 2 just overlaps with the rear of the first frame unit 1, or it can be slightly greater than or less than 180 degrees, that is, the second frame unit 2 is slightly tilted and superimposed on the rear of the first frame unit 1, and can be used as fitness equipment such as sit-ups and push-ups. In addition, in this embodiment, for the sake of clarity, the first posture for the recliner or seat is that the second frame unit 2 has an angle with the first frame unit 1, and the second posture for the fitness equipment is that the second frame unit 2 overlaps with the end of the first frame unit 1. In other embodiments, it can also be used as fitness equipment when the second frame unit 2 has an angle with the first frame unit 1, which is also within the protection scope of the present invention. ;

[0129] like Figure 3As shown, as the first embodiment of the present invention, the first frame unit 1 includes two parallel frame structures 11, the frame structure 11 is configured as a rod-shaped structure, and the first abutment unit 13 is installed and supported between the two frame structures 11, so that the two frame structures 11 and the first abutment unit 13 together constitute a support end surface mainly used to support the buttocks, legs and other parts, which greatly saves the profile required for the first frame unit 1, saves costs, reduces the overall weight of the multifunctional chair, and is convenient for use and transportation. Moreover, the two frame structures 11 are arranged in parallel. Compared with the non-parallel arrangement, on the one hand, the overall volume of the multifunctional chair is reduced, thereby facilitating placement, packaging, carrying and transportation. On the other hand, the width between the front and rear ends of the two frame structures 11 is made consistent, thereby facilitating the installation or connection of the first abutment unit 13. Of course, in other embodiments, the frame structure 11 can also be set as one and set as a plate-like structure, or set as a combination of three, four, five or even more rod-like structures and the first abutting unit 13, or without the first abutting unit 13, or set as other frame structures. The two frame structures 11 can also be set in non-parallel positions such as figure eight, inverted figure eight or cross, which can also form a supporting end surface for supporting the buttocks, legs and other parts together with the first abutting unit 13. Of course, the frame structure 11 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the frame structure 11 can also be made of wood, plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse.

[0130] like Figure 3As shown, as the first embodiment of the present invention, the first frame unit 1 also includes two transverse support structures 12 spaced between the two frame structures 11, the transverse support structure 12 is configured as a rod-shaped structure, and the first abutting unit 13 is installed and supported above the two frame structures 11 and the two transverse support structures 12. In this embodiment, by adding two transverse support structures 12 spaced between the two frame structures 11, the stability and load-bearing performance of the first frame unit 1 and the first abutting unit 13 are improved, and the two transverse support structures 12 are spaced apart, which greatly saves the profiles required for the first frame unit 1, saves costs, reduces the overall weight of the multifunctional chair, and facilitates use and transportation. Of course, in other embodiments, the transverse support structure 12 can also be configured as one and configured as a plate-shaped structure, or configured as three, four, five or even more rod-shaped structures spaced or not spaced apart, or configured as other frame structures, which can also improve the stability and load-bearing performance of the first frame unit 1. In other embodiments, the transverse support structure 12 may not be configured. Moreover, in this embodiment, the two transverse support structures 12 are arranged in parallel, so that an unsupported space is formed between the two transverse support structures 12. When the buttocks, legs and other parts are placed on the first abutting unit 13 arranged on this part of the first frame unit 1, they are more comfortable and relaxed. Of course, in other embodiments, the two transverse support structures 12 can also be arranged in a non-parallel manner such as an eight-shaped shape or an inverted eight-shaped shape, or cross-arranged, which can also improve the stability and load-bearing performance of the first frame unit 1. In addition, the transverse support structure 12 in this embodiment is arranged as a concave arc structure, thereby further increasing the fitting area between the first abutting unit 13 above the transverse support structure 12 and the buttocks, legs and other parts, and further improving the comfort of the buttocks, legs and other parts. Of course, in other embodiments, the transverse support structure 12 can also be arranged as an upward convex arc structure to increase the stretching range of the legs, waist, abdomen, back, shoulders, neck and other parts, or it can be arranged as a straight structure to support the buttocks, legs and other parts. Of course, the lateral support structure 12 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the lateral support structure 12 can also be made of wood, plastic or other materials, or a combination of these materials to make the multifunctional chair more diverse.

[0131] like Figure 3 As shown, as the first embodiment of the present invention, the frame structure 11 is configured as an integrated structure, which enhances the stability of the frame structure 11 and has a simple structure, which is convenient for production and processing.

[0132] like Figure 3As shown, as the first embodiment of the present invention, the second frame unit 2 is connected to the first frame unit 1 through the third rotating component 8, and the third rotating component 8 is used for the second frame unit 2 to adjust and lock the position of the first posture for a reclining chair or a seat and the second posture for fitness equipment relative to the first frame unit 1. In this embodiment, the angle and position adjustment and locking between the second frame unit 2 and the first frame unit 1 can be achieved by setting the third rotating component 8 between the second frame unit 2 and the first frame unit 1. By rotating the second frame unit 2 relative to the first frame unit 1, the angle between the first abutting unit 13 and the second abutting unit 23 is also adjusted accordingly. The adjustment is convenient, and the switching between fitness or reclining chair or seat can be completed with one button. The structure of the multifunctional chair is greatly simplified, the weight of the multifunctional chair is reduced, and it is convenient to use and carry, and it is easy to install and disassemble. Of course, in other embodiments, the third rotating component 8 may also be used only to achieve the adjustment of the angle and position between the second frame unit 2 and the first frame unit 1, and cooperate with other locking structures to achieve the locking of the angle and position between the second frame unit 2 and the first frame unit 1, or the third rotating component 8 is used only to achieve the locking of the angle and position between the second frame unit 2 and the first frame unit 1, and cooperate with other adjustment structures to achieve the adjustment of the angle and position between the second frame unit 2 and the first frame unit 1, and can also achieve the adjustment and locking of the angle and position between the second frame unit 2 and the first frame unit 1.

[0133] like Figure 4As shown, as a first embodiment of the present invention, the second posture of the fitness equipment is formed by the second frame unit 2 rotating relative to the first frame unit 1 through the third rotating component 8, and moving along the end 102 direction of the first frame unit 1 until it overlaps with the end 102. At this time, the second abutment unit 23 also moves with the second frame unit 2 to overlap with the end 102, so that the multifunctional chair as a whole forms a fitness equipment structure such as sit-ups and push-ups, which can be used for large-scale stretching movements of the legs, waist, abdomen, back, shoulders, neck and other parts. In this embodiment, the third rotating assembly 8 is arranged at the middle position of the first frame unit 1, so that the second frame unit 2 can overlap with the end 102 after moving in the direction of the end 102 of the first frame unit 1, thereby ensuring that the second abutting unit 23 and the first abutting unit 13 are stretched to the maximum extent to form the maximum support end surface. Of course, in other embodiments, the third rotating assembly 8 can also be arranged a distance forward relative to the middle position of the first frame unit 1, so that the second frame unit 2 can overlap with the part of the structure of the first frame unit 1 near the end 102 after moving in the direction of the end 102 of the first frame unit 1, forming a slightly smaller support end surface, and can also switch between the first posture for a recliner or seat and the second posture for fitness equipment. In this embodiment, the shape of the second frame unit 2 and the end 102 of the first frame unit 1 are matched, so that the overlap is higher, so that no additional space is required. Of course, in other embodiments, the shape of the second frame unit 2 and the end 102 of the first frame unit 1 can also be set to different shapes, so that they only partially overlap, and can also form the second posture for fitness equipment.

[0134] like Figure 1 As shown, as the first embodiment of the present invention, the first posture of the reclining chair or the seat is formed by the second frame unit 2 rotating relative to the first frame unit 1 through the third rotating component 8, and moving in any direction of the end 102 or the head end 101 of the first frame unit 1 to have an angle with the first frame unit 1. At this time, the second abutting unit 23 also moves with the second frame unit 2 to have a certain angle with the end 102 of the first frame unit 1, so that the multifunctional chair forms a reclining chair or seat structure as a whole, and the second frame unit 2 can be adjusted to a comfortable height as needed. Of course, when the multifunctional chair is in the first posture for use as a reclining chair or a seat, it can also be used for stretching and fitness exercises for the legs, waist, abdomen, back, shoulders, neck and other parts.

[0135] like Figure 3As shown, as the first embodiment of the present invention, the second frame unit 2 includes two parallel frame structures 21, the frame structure 21 is configured as a rod-shaped structure, and the second abutment unit 23 is installed and supported between the two frame structures 21, so that the two frame structures 21 and the second abutment unit 23 together constitute a support end surface mainly used to support the back, waist and other parts, which greatly saves the profiles required for the second frame unit 2, saves costs, reduces the overall weight of the multifunctional chair, and facilitates use and transportation. Moreover, the two frame structures 21 are arranged in parallel. Compared with the non-parallel arrangement, on the one hand, the overall volume of the multifunctional chair is reduced, thereby facilitating placement, packaging, carrying and transportation. On the other hand, the width between the upper and lower ends of the two frame structures 21 is made consistent, thereby facilitating the installation or connection of the second abutment unit 23. Of course, in other embodiments, the frame structure 21 can also be set as one and set as a plate-like structure, or set as a combination of three, four, five or even more rod-like structures and the second abutting unit 23, or no second abutting unit 23 is set, or set as other frame structures. The two frame structures 21 can also be set in an eight-shaped, inverted eight-shaped or cross-shaped non-parallel arrangement, which can also form a support end surface for supporting the back, waist and other parts together with the second abutting unit. Of course, the frame structure 21 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the frame structure 21 can also be made of wood, plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse.

[0136] like Figure 2As shown, as a first embodiment of the present invention, the second frame unit 2 also includes two transverse support structures 22 spaced apart between the two frame structures 21, the transverse support structure 22 is configured as a rod-shaped structure, and the second abutment unit 23 is installed and supported in front of the two frame structures 21 and the two transverse support structures 22. In this embodiment, two lateral support structures 22 are added between the two frame structures 21 to improve the stability and load-bearing performance of the second frame unit 2 and the second abutment unit 23. The two lateral support structures 22 are arranged at intervals, which greatly saves the profiles required for the second frame unit 2, saves costs, and reduces the overall weight of the multifunctional chair, thereby facilitating use, packaging, carrying and transportation. Of course, in other embodiments, the lateral support structure 22 can also be set as one and set as a plate structure, or set as three, four, five or even more rod-like structures arranged at intervals or not, or set as other frame structures, which can also improve the stability and load-bearing performance of the second frame unit 2. In other embodiments, the lateral support structure 22 may not be set. Moreover, in this embodiment, the two transverse support structures 22 are arranged in parallel, so that an unsupported space is formed between the two transverse support structures 22. When the back, waist and other parts are placed on the second abutting unit 23 arranged on this part of the second frame unit 2, it is more comfortable and relaxing. Of course, in other embodiments, the two transverse support structures 22 can also be arranged in a non-parallel manner such as an eight-shaped shape or an inverted eight-shaped shape, or cross-arranged, which can also improve the stability and load-bearing performance of the second frame unit 2. In addition, the transverse support structure 22 in this embodiment is arranged as a rear concave arc structure, thereby further increasing the fitting area between the second abutting unit 23 in front of the transverse support structure 22 and the back, waist and other parts, further improving the comfort of the back, waist and other parts. Of course, in other embodiments, the transverse support structure 22 can also be arranged as a forward convex arc structure to increase the stretching range of the legs, waist, abdomen, back, shoulders, neck and other parts, or it can be arranged as a straight structure to support the back, waist and other parts. Of course, the lateral support structure 21 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the lateral support structure 21 can also be made of wood, plastic or other materials, or a combination of these materials to make the multifunctional chair more diverse.

[0137] like Figure 7As shown, as the first embodiment of the present invention, the third rotating assembly 8 includes a ratchet 812 with a ratchet arm 811, a ratchet shaft 813, a rotating arm 814, a non-return pawl 815, a non-return pawl shaft 816, a return member 817, and a reset member 818, wherein the ratchet arm 811 is connected to the frame structure 21, one end of the rotating arm 814 is hinged to the ratchet 812 through the ratchet shaft 813, and the other end is connected to the frame structure 11, the non-return pawl 815 is hinged to the rotating arm 814 through the non-return pawl shaft 816, and is correspondingly arranged with the ratchet 812, so as to prevent the ratchet 812 from rotating. Rotation, the return member 817 is sleeved on the ratchet shaft 813, one end of the return member 817 is provided with an arc-shaped notch structure 8171, the ratchet 812 is provided with an arc-shaped protrusion structure 8121 corresponding to the arc-shaped notch structure 8171, the other end of the return member 817 is provided with a protrusion structure 8172 corresponding to the non-return pawl 815, the protrusion structure 8172 is used to drive the non-return pawl 815 to leave the ratchet 812, and the return member 818 uses a return spring to drive the non-return pawl 815 to abut against the ratchet 812 after the non-return pawl 815 leaves the ratchet 812. In this embodiment, when the frame structure 21 rotates toward the head end 101, the ratchet 812 also rotates counterclockwise, and at the same time, the non-return pawl 815 passes through the back of the teeth of the ratchet 812 one by one. When the frame structure 21 is adjusted to the required angle, the non-return pawl 815 returns to abut against a certain tooth groove of the ratchet 812 under the elastic force of the reset member 818, thereby achieving the locking of the ratchet 812, that is, achieving the locking between the frame structure 21 and the frame structure 1 11; when it is necessary to rotate the frame structure 21 toward the end 102, first rotate the frame structure 21 toward the head end 101 so that the front side of the arc-shaped protrusion structure 8121 on the ratchet 812 abuts against the front side of the arc-shaped notch structure 8171 on the return member 817, and continue to rotate the frame structure The frame structure 21 causes the arc-shaped protrusion structure 8121 to push the arc-shaped notch structure 8171 to rotate in the counterclockwise direction until the protrusion structure 8172 pushes the pawl 835 away from the ratchet 812, and then the frame structure 21 is rotated toward the end 102. When the rear side of the arc-shaped protrusion structure 8121 abuts against the rear side of the arc-shaped notch structure 8171 on the return member 817, the frame structure 21 continues to be rotated so that the arc-shaped protrusion structure 8121 pushes the arc-shaped notch structure 8171 to rotate in the clockwise direction until the protrusion structure 8172 leaves the non-return pawl 815. The non-return pawl 815 returns to abut against a tooth groove of the ratchet 812 under the elastic force of the reset member 818, thereby achieving the locking of the ratchet 812, that is, achieving the locking between the frame structure 21 and the frame structure 11.The third rotating component 8 in this embodiment has a simple structure and is easy to operate. It can enable the frame structure 2 21 connected to the ratchet arm 811 to rotate and lock between the head end 101 and the end 102 of the frame structure 1 11 connected to the rotating arm 834. Of course, in other embodiments, the third rotating component 8 can also be configured to realize other ratchet structures or hinge structures that can realize the rotation and locking of the frame structure 2 21 between the head end 101 and the end 102 of the frame structure 1 11, and can also realize the rotation and locking of the frame structure 2 21 between the head end 101 and the end 102 of the frame structure 1 11. In addition, in this embodiment, two third rotating components 8 are provided, and are respectively welded between the frame structure 21 and the frame structure 1 11 on the same side, thereby improving the adjustability and stability during adjustment. Of course, in other embodiments, only one third rotating component 8 may be provided, and the welding method may also be replaced by other connection methods such as threaded connection, riveting, and snap connection. The third rotating component 8 may also be provided between any one or two of the frame structure 2 21 and the transverse support structure 2 22 and any one or two of the frame structure 1 11 and the transverse support structure 1 12, thereby realizing the rotational connection and locking between the second frame unit 2 and the first frame unit 1.

[0138] like Figure 3As shown, as the first embodiment of the present invention, the first connection position 103 is arranged near the head end 101 of the frame structure 11, that is, the first support unit 3 is supported near the head end 101 of the frame structure 11, thereby reducing the overall height of the multifunctional chair and improving the overall stability of the multifunctional chair. A distance is left between the head end 101 of the frame structure 11 and the first connection position 103. On the one hand, the stability of the connection between the first support unit 3 and the frame structure 11 is improved, and the risk of falling off the connection is reduced. On the other hand, this part of the structure at the head end 101 of the frame structure 11 can also be used as an armrest, especially when the multifunctional chair is in the second posture of fitness equipment, it can be used to assist the human body in performing various fitness movements such as sit-ups and push-ups. In addition, the first abutment unit 13 is arranged on the frame structure 11 near the first connection position 103 along the end 102 direction, so that the support end surface between the first abutment unit 13 and the second abutment unit 23 is larger, and has a larger contact area with the human body, and the focus points are more dispersed, thereby improving comfort. Of course, in other embodiments, the first connection position 103 can also be arranged to coincide with the head end 101 of the frame structure 11, further reducing the overall height of the multifunctional chair and improving the overall stability of the multifunctional chair, and hiding the head end 101 of the frame structure 11 in the first support unit 3, making the multifunctional chair as a whole more concise and more unobstructed to use, or the first connection position 103 can be arranged to coincide with the head end 101 of the frame structure 11 while another first connection position 103 is arranged near the head end 101 on the frame structure 11, thereby improving the stability of the connection between the first support unit 3 and the frame structure 11 on the basis of simplicity and unobstructedness, and reducing the risk of falling off the connection. In this embodiment, the first connection position 103 is set on the frame structure 11 to enhance the stability and load-bearing performance of the multifunctional chair. Of course, in other embodiments, the first connection position 103 can also be set on the transverse support structure 12, or on the frame structure 11 and the transverse support structure 12, so that the first support unit 3 is connected to the transverse support structure 12, or is connected to the frame structure 11 and the transverse support structure 12 together, both of which can realize the support of the first support unit 3 to the head end 101 of the first frame unit 1 or the position near the head end 101, so that the height of the end 102 of the first frame unit 1 is lower than the height at the first connection position 103.

[0139] like Figure 1As shown, as the first embodiment of the present invention, the first support unit 3 is set as one, with a simple structure, which is convenient for use, carrying and transportation. Of course, in other embodiments, the first support unit 3 can also be set as two, three or even more, so as to enhance the support for the first frame unit 1 and improve the stability and load-bearing performance of the multifunctional chair. In addition, the first support unit 3 is set at an angle to the installation end surfaces such as the floor, mat, sand and stone, and various indoor or outdoor platform surfaces, that is, the first support unit 3 is set inclined to these installation end surfaces. In this embodiment, the upper end of the first support unit 3 is set to tilt backward, so that the multifunctional chair as a whole forms a structure that gradually collapses from bottom to top. When the first frame unit 1 is subjected to force, the various parts of the multifunctional chair will become tighter, and the structure will be more stable and firm. Of course, in other embodiments, the upper end of the first support unit 3 can also be tilted forward, so that the multifunctional chair as a whole forms a structure that gradually folds from top to bottom, allowing the feet, calves and other parts to move without hindrance, or the first support unit 3 can be arranged perpendicular to these mounting end surfaces, and can also form a stable triangular support structure with the first frame unit 1 and the ground and other mounting end surfaces, thereby realizing the stable placement and use of the multifunctional chair.

[0140] like Figure 3As shown, as the first embodiment of the present invention, the first support unit 3 includes two first support members 31 arranged in parallel, and the first support members 31 are arranged to be a rod-shaped structure. The upper ends of the two first support members 31 are respectively connected to the first connection positions 103 on the frame structure 11 on the same side, and the lower ends are used to lean against the installation end surfaces of installation media such as floors, mats, sand and stones, and various indoor or outdoor platforms, which greatly saves the profiles required for the first support unit 31, saves costs, reduces the overall weight of the multifunctional chair, and facilitates use and transportation. The two first support members 31 are arranged in parallel, which, compared with the figure-eight arrangement, reduces the overall volume of the multifunctional chair on the one hand, thereby facilitating placement, packaging, carrying and transportation. On the other hand, the two first support members 31 are respectively on the same plane with the frame structure 11 on the same side, and respectively apply backward positive support forces to the frame structure 11 on the same side, thereby improving the stability of the support. Of course, in other embodiments, the first support member 31 can also be set as one and set as a plate-like structure, and connected to the first connection positions 103 on the two frame structures 11 at the same time, or set as three, four, five or even more rod-like structures, so that one frame structure 11 is respectively connected to multiple first support members 31, and the two first support members 31 can also be set in a non-parallel manner such as an eight-shaped shape or an inverted eight-shaped shape, or cross-set, so that the two first support members 31 are respectively connected to the frame structure 11 on the opposite side, which can also realize the support of the first support unit 3 to the first connection position 103 on the first frame unit 1. Of course, the first support member 31 in this embodiment is made of metal materials such as steel and iron. In other embodiments, the first support member 31 can also be made of wood, plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse.

[0141] like Figure 3 As shown, as the first embodiment of the present invention, the first support member 31 is configured as an integrated structure, which enhances the stability of the first support unit 3 and has a simple structure, which is convenient for production and processing.

[0142] like Figure 3As shown, as the first embodiment of the present invention, the first support unit 3 is rotatably connected to the first frame unit 1 through the first rotating component 6, so that the first support unit 3 can rotate relative to the first frame unit 1. On the one hand, the relative angle between the first support unit 3 and the first frame unit 1 can be adjusted to change the angle between the first support unit 3 and the first frame unit 1 and the overall height of the multifunctional chair, thereby changing the supporting direction of the first support unit 3 to the first frame unit 1 to form different supporting structures. At the same time, the positioning unit 9 also moves accordingly, so that the angle when used as a foot pad or a foot presser is also different, so that the multifunctional chair has a richer usage state. On the other hand, after the first support unit 3 is rotated to abut against the first frame unit 1, the first support unit 3 can also be folded and retracted, thereby reducing the overall volume of the multifunctional chair, which is convenient for storage, packaging, carrying and transportation. In this embodiment, two first rotating components 6 are provided, and the first support members 31 on the same side are connected to the frame structure 11 respectively through a first rotating component 6, so that the two first support members 31 can be rotated relative to the frame structure 11 on the same side, so that they can be combined into more diverse usage states, and the two first support members 31 can be folded up to further reduce the overall volume of the multifunctional chair, which is conducive to storage, packaging, carrying and transportation. Of course, in other embodiments, only one first rotating component 6 can be provided, so that a certain first support member 31 can be rotated and folded relative to the frame structure 11 on the same side, which can also enable the multifunctional chair to have a richer usage state and reduce the overall volume of the multifunctional chair.

[0143] like Figure 8As shown, as embodiment 1 of the present invention, the first rotating component 6 includes a connecting member 61, a rotating shaft 62 and a limiting member 63, wherein one end of the connecting member 61 is connected to the first connecting position 103 on the frame structure 11, and the other end is hinged to the first support member 31 through the rotating shaft 62, so that the first support member 31 can rotate relative to the first connecting position 103 on the frame structure 11, and the rotating shaft 62 is arranged perpendicular to the direction of the frame structure 11, and the limiting member 63 is arranged at the front part of the connecting member 61, so that the rotation trajectory of the two first support members 31 is limited in the parallel direction of the frame structure 11, so as to prevent the overall instability of the multifunctional chair due to the inconsistent rotation angles and directions of the two first support members 31. In this embodiment, when the first support unit 3 is rotated forward relative to the first frame unit 1 until the front end of the first support member 31 abuts against the limit member 63, the first support unit 3 is unfolded under the drive of the first support member 31. At this time, the multifunctional chair can be stably placed on the ground or other installation end surface for use. When the first support unit 3 is rotated backward relative to the first frame unit 1 until it abuts against the first frame unit 1, the first support unit 3 is folded and collapsed under the drive of the first support member 31. At this time, the overall volume of the multifunctional chair is reduced, which can be convenient for storage, packaging, carrying or transportation. Of course, in other embodiments, a locking member can also be provided to achieve locking of the first support member 31 at any angle of rotation relative to the connecting member 61, thereby fixing the first support member 31 and the first frame unit 1 as a whole at different angles and positions, which can be used for pads or pressure feet at different angles and positions, so that the multifunctional chair has a richer usage state. In other embodiments, the first rotating assembly 6 can also be configured as other connecting structures such as hinges that enable the first support member 31 to rotate relative to the frame structure 11, and can also enable the first frame unit 1 to switch between an expanded state and a folded state, which is convenient for use, storage, packaging, carrying or transportation.

[0144] like Figure 5 As shown, as the first embodiment of the present invention, the multifunctional chair also includes a positioning unit 9 arranged on the first supporting unit 3. When the multifunctional chair is in the first state of a reclining chair or a seat, it can be used for the placement of feet, calves and other parts to improve the comfort when sitting or lying. When it is in the second posture of fitness equipment, it can also be used for one of the placement or positioning of feet, calves and other parts, or can be used for the placement and positioning of feet, calves and other parts at the same time, so as to assist in various stretching movements of the legs, waist, abdomen, back, shoulders, neck and the like, completely replacing the existing independent fitness equipment.

[0145] like Figure 5As shown, as the first embodiment of the present invention, the positioning unit 9 includes a positioning connector 91 and a positioning adjustment member 92, wherein the positioning connector 91 is configured as a rod-shaped structure and is provided with two, the two positioning connectors 91 are arranged at intervals, and the two ends of the two positioning connectors 91 are respectively connected to the two first support members 31. On the one hand, the two positioning connectors 91 and the two first support members 31 together constitute abutment end surfaces for placing or positioning the feet, calves and other parts, which greatly saves the profiles required for the positioning unit 9, saves costs, reduces the overall weight of the multifunctional chair, and is convenient for use and transportation. The two positioning connectors 91 are arranged at intervals, so that the feet, calves and other parts can be placed between the two positioning connectors 91, so as to realize the limiting and support of the front and rear contact surfaces, and improve the stability of the positioning. On the other hand, the two positioning connectors 91 are connected between the two first support members 31, which can also enhance the stability of the first support unit 3. The two first support members 31 are respectively provided with positioning adjustment members 92, and the outer ends of the positioning adjustment members 92 are formed with positioning end faces for the feet, calves and other parts to abut against, thereby increasing the contact area between the two positioning connectors 91 and the feet, calves and other parts, and improving the comfort. In this embodiment, there are two positioning connectors 91, and they are respectively provided with positioning adjustment members 92, so that the feet, calves and other parts and the positioning unit 9 have two placement or positioning end faces, which improves the comfort and positioning stability. Of course, in other embodiments, the positioning connector 91 can also be provided with only one, or three, four, five or even more, and the positioning adjustment member 92 can also be provided on only one of the positioning connectors 91, or on several positioning connectors 91 in various combinations, or without the positioning adjustment member 92, which can also achieve the placement or positioning of the feet, calves and other parts. In addition, a fixed connection structure such as welding or riveting can be adopted between the positioning connector 91 and the first support member 31 to enhance the stability of the structure. A detachable connection structure such as a threaded structure, a screw, or a pin can be adopted to enable the multifunctional chair to be converted between having a positioning unit and not having a positioning unit, thereby making the multifunctional chair more diversified. Alternatively, a rotatable connection structure can be adopted so that the positioning connector 91 can be rotated relative to the first support member 31, thereby having a massage effect on the feet, calves and other parts, thereby enriching the functionality of the multifunctional chair. Similarly, a fixed connection structure such as welding or gluing can be adopted between the positioning adjustment member 92 and the positioning connector 91 to enhance the stability of the structure. Alternatively, a detachable connection structure such as a snap-fit ​​connection, a threaded connection, or an interference connection can be adopted to enable the multifunctional chair to be converted between having a positioning adjustment member and not having a positioning adjustment member, thereby making the multifunctional chair more diversified. Alternatively, a rotatable connection structure can be adopted so that the positioning adjustment member 92 can be rotated relative to the positioning connector 91, thereby enhancing the massage effect on the feet, calves and other parts, thereby enriching the functionality of the multifunctional chair.Of course, the positioning connector 91 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the positioning connector 91 can also be made of wood, plastic or other materials, or a combination of these materials to make the multifunctional chair more diverse.

[0146] like Figure 5 As shown, as the first embodiment of the present invention, the positioning adjustment member 92 is configured to be a flexible structure such as a sponge, a foam, a soft silicone structure, etc., to further enhance the comfort of the feet, calves and other parts placed or positioned on the positioning adjustment member 92. Of course, in other embodiments, the positioning adjustment member 92 can also be configured to be a hard structure such as steel, iron, plastic, hard silicone, etc., which can also increase the contact area between the two positioning connectors 91 and the feet, calves and other parts, and appropriately enhance the comfort.

[0147] like Figure 2 As shown, as the first embodiment of the present invention, the multifunctional chair also includes a second support unit 4 for supporting the rear of the first frame unit 1 to maintain the overall balance of the multifunctional chair. In this embodiment, the second support unit 4 is composed of the end 102 of the first frame unit 1, which simplifies the structure and facilitates production and processing. Of course, in other embodiments, the second support unit 4 may also be composed of the main body and the end 102 of the first frame unit 1, that is, it may be composed of a larger part of the first frame unit 1, or only of the main body of the first frame unit 1 near the end 102, or the second support unit 4 may be separately provided and connected to the end 102 of the first frame unit 1 or a position near the end 102, which can also support the rear of the first frame unit 1 and maintain the overall balance of the multifunctional chair.

[0148] like Figure 4As shown, as the first embodiment of the present invention, the second support unit 4 is set as one, the structure is simple, and it is convenient to use, pack, carry and transport. Of course, in other embodiments, the second support unit 4 can also be set as two, three or even more to enhance the support for the rear of the first frame unit 1 and improve the stability and load-bearing performance of the multifunctional chair. In addition, the second support unit 4 is set at an angle with the installation end surfaces such as the floor, mat, sand and stone, and various indoor or outdoor platform surfaces, that is, the second support unit 4 is set at an angle to these installation end surfaces. In this embodiment, the upper end of the second support unit 4 is set to tilt forward, so that the multifunctional chair as a whole forms a structure that gradually collapses from bottom to top. When the first frame unit 1 is subjected to force, the various parts of the multifunctional chair will become more compact, and the structure will be more stable and firm. The angle at which the upper end of the second support unit 4 tilts forward makes it form an extension shape of the first frame unit 1, so that the structure is simple, easy to produce and process, and can form a stable triangular support structure with the first frame unit 1, the first support unit 3 and the installation end surfaces such as the ground, so as to achieve stable placement and use of the multifunctional chair. Of course, in other embodiments, the upper end of the second support unit 4 can also be tilted backward, so that the multifunctional chair as a whole forms a structure that gradually folds from top to bottom, so that the end 102 of the first frame unit 1 is at a certain height from the ground or other mounting end surface, so that it can move unimpeded under the end 102 of the first frame unit 1, or the second support unit 4 can be set vertically to the ground or other mounting end surface, and it can also work together with the first support unit 3 to support the front and rear ends of the first frame unit 1, thereby realizing the stable placement and use of the multifunctional chair.

[0149] like Figure 5As shown, as the first embodiment of the present invention, the second support unit 4 includes two second support members 41 arranged in parallel, and the second support members 41 are arranged to be a rod-shaped structure. The two second support members 41 are respectively composed of the frame structure 11 on the same side, and the lower ends of the two second support members 41 are used to lean against the installation end surfaces of installation media such as floors, mats, sand and stones, and various indoor or outdoor platforms, which greatly saves the profiles required for the second support unit 4, saves costs, reduces the overall weight of the multifunctional chair, and facilitates use and transportation. The two second support members 41 are arranged in parallel. Compared with the figure-eight arrangement, on the one hand, the overall volume of the multifunctional chair is reduced, thereby facilitating placement, packaging, carrying and transportation. On the other hand, the two second support members 41 are respectively on the same plane with the frame structure 11 on the same side, and respectively apply forward positive support forces to the frame structure 11 on the same side, thereby improving the stability of the support. Of course, in other embodiments, the second support member 41 can also be set as one and set as a plate-like structure, connected to two frame structures 11 at the same time, or set as three, four, five or even more rod-like structures, so that one frame structure 11 is respectively connected to multiple second support members 41, and the two second support members 41 can also be set in a non-parallel manner such as an eight-shaped or inverted eight-shaped shape, or cross-set, so that the two second support members 41 are respectively connected to the frame structure 11 on the opposite side, which can also realize the support of the second support unit 4 to the rear of the first frame unit 1. Of course, the second support member 41 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the second support member 41 can also be made of wood, plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse.

[0150] like Figure 5 As shown, as the first embodiment of the present invention, the second support member 41 is configured as an integrated structure, which enhances the stability of the second support unit 4 and has a simple structure, which is convenient for production and processing.

[0151] like Figure 5As shown, as the first embodiment of the present invention, the second support unit 4 also includes a second reinforcing member 42 arranged between the two second support members 41, which is used to strengthen the stability and load-bearing performance of the structure of the second support unit 4, and the second reinforcing member 42 is arranged as a rod-shaped structure, which greatly saves the profile required for the second reinforcing member 42, saves costs, reduces the overall weight of the multifunctional chair, and is convenient for use and transportation. Of course, in other embodiments, the second reinforcing member 42 can also be set as two, three or even more to further strengthen the stability of the second support unit 4, and the rod structure can also be replaced with a plate structure or other structure, which can also achieve the effect of strengthening the stability and load-bearing performance of the structure of the second support unit 4. In addition, the second reinforcing member 42 in this embodiment is arranged between the ends of the two second support members 41, thereby increasing the contact area between the second support unit 4 and the installation end surface such as the ground, and improving the stability of the chair when it is placed. Of course, in other embodiments, the second reinforcing member 42 can also be arranged between other positions of the two second support members 41, which can also achieve the effect of strengthening the stability and load-bearing performance of the second support unit 4. Of course, the second reinforcement 41 in this embodiment can be made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the second reinforcement 41 can also be made of wood, plastic or other materials, or a combination of these materials to make the multifunctional chair more diverse.

[0152] like Figure 2As shown, as the first embodiment of the present invention, the multifunctional chair also includes an armrest structure 14, and the armrest structure 14 is sleeved on the outside of the head end 101 of the frame structure 11, thereby increasing the contact area when the hand holds the head end 101 of the frame structure 11, thereby improving the comfort of use, especially when the multifunctional chair is in the second posture of fitness equipment to assist the human body in performing various fitness movements such as sit-ups and push-ups. In this embodiment, the armrest structure 14 is arranged outside the head end 101 of the frame structure 11, which is convenient for installation, disassembly and use, and is convenient for production and processing. It also has the anti-collision effect of the head end 101. Of course, in other embodiments, the armrest structure 14 can also be arranged at other positions on the frame structure 11, or arranged on any one of the transverse support structure 12, the first abutment unit 13, the first rotating assembly 6, the first support member 31, the positioning connection member 91, the positioning adjustment member 92, the frame structure 21, the transverse support structure 22 or the second abutment unit 23, or any combination of several of them, and can also achieve the effect of assisting the human body to perform various fitness movements such as sit-ups and push-ups. In addition, in this embodiment, the armrest structure 14 adopts a flexible structure such as a sponge, a foam or a soft silicone structure to improve the comfort when holding. Of course, in other embodiments, the armrest structure 14 can also adopt a hard structure such as a steel body, an iron body, a wood body, etc., which can also moderately improve the comfort of use.

[0153] like Figure 2 As shown, as the first embodiment of the present invention, the handrail structure 14 is rotatably connected to the head end 101 of the frame structure 11, and can be rotated relative to the frame structure 11 after holding the handrail structure 14, thereby facilitating the human body to perform various fitness movements that require twisting the hands, wrists, etc., and improving the fitness effect. Of course, in other embodiments, the handrail structure 14 can also be connected to the head end 101 of the frame structure 11 through a fixed connection structure such as welding or gluing to enhance the stability of the connection, or connected through a detachable connection structure such as thread, screw, snap fit, interference fit, etc., to facilitate the replacement of different types of handrail structures 14.

[0154] like Fig. 9As shown in the figure, as the first embodiment of the present invention, the first abutment unit 13 includes a first abutment structure 131, which is mainly used for contacting and supporting the buttocks, legs and other parts of the human body when sitting or lying down. The first abutment structure 131 is arranged on the frame structure 11, and the first abutment structure 131 extends from the rear end close to the first connection position 103 along the direction close to the end 102 of the first frame unit 1. On the one hand, the front end of the first abutment structure 131 is arranged close to the first connection position 103 supported by the first support member 31, so that the first abutment structure 131 has a larger area of ​​the first connection position 103 on the frame structure 11 and the first rotating member 31. On the other hand, a storage space is left between the front end of the first abutment structure 131 and the positioning unit 4, which can be used for the placement and positioning of the feet, calves and other parts. A storage space is left between the front end of the first abutment structure 131 and the free end of the armrest structure 14, which can be used for the placement of the feet, calves and other parts. The feet, calves and other parts can also be blocked in the storage space by the armrest structure 14, so as to further realize the positioning of the feet, calves and other parts, and prevent external collisions with the feet, calves and other parts. Of course, in other embodiments, the front end of the first abutting structure 131 can also be set on the first connection position 103, and on the basis of ensuring that the first abutting unit 13 has a sufficiently large contact end surface, a shelf space for placing and positioning the feet, calves and other parts can be reserved, or it can be extended from the front end close to the first connection position 103 along the direction close to the end 102 of the first frame unit 1. The rear end of the first abutting structure 131 can also be set at the position connected to the first rotating component 6 on the frame structure 11, or set behind the position connected to the first rotating component 6 on the frame structure 11, or even set at the end 102 of the first frame unit 1, which can also enable the first abutting unit 3 to support the buttocks, legs and other parts. Of course, in other embodiments, the first abutting structure 131 can also be set on the transverse support structure 12, or on the frame structure 11 and the transverse support structure 12, which can also support the buttocks, legs and other parts.

[0155] like Fig. 9As shown, as the first embodiment of the present invention, the first abutting structure 131 is connected to the frame structure 11 through the first connecting component 132, so that the first abutting structure 131 can be detachably connected to the frame structure 11, which is convenient for cleaning the first abutting structure 131, or replacing different types of first abutting structures 131 according to different needs, so that the multifunctional chair as a whole is more diversified. In this embodiment, a groove structure with an opening is provided on the frame structure 11, and the first connecting component 132 is configured as a clip structure matching the groove structure. The first abutting structure 131 is snap-connected with the groove structure on the frame structure 11 through the clip structure, which is convenient for installation and disassembly. Of course, in other embodiments, the groove structure and the clip structure can also be configured as other clip structures, or configured as any other detachable connection structure such as a hook structure, an adhesive structure, or a combination of several detachable connection structures, which can also achieve convenient cleaning and replacement of different types of first abutting structures 131. Of course, in other embodiments, the first connecting component 132 may not be provided, and the first abutting structure 131 may be directly connected to the frame structure 11 by wrapping part or all of the structure of the end portion thereof around the outside of the frame structure 11, thereby simplifying the structure and facilitating production and processing.

[0156] like Fig.10 As shown, as the first embodiment of the present invention, the second abutting unit 23 includes a second abutting structure 231, which is mainly used for contacting and supporting the back, waist and other parts of the human body when sitting or lying down. The second abutting structure 231 is arranged on the frame structure 21, and extends from one end close to the frame structure 21 along the direction of the other end close to the frame structure 21. In this embodiment, the two ends of the second abutting structure 231 are respectively arranged close to the two ends of the frame structure 21, so that the second abutting structure 231 is arranged on the frame structure 21 with a larger area, which ensures that the second abutting structure 231 has a sufficiently large contact end surface and is convenient for installation and disassembly. Of course, in other embodiments, the second abutting structure 231 can also be arranged in a partial area on the frame structure 21, so that the second abutting structure 231 has a relatively small contact end surface, and the second abutting structure 231 can also achieve support for the buttocks, legs and other parts. Of course, in other embodiments, the second abutment structure 231 may also be disposed on the second transverse support structure 22, or on the second frame structure 21 and the second transverse support structure 22, so as to provide support for the back, waist and other parts.

[0157] like Fig.10As shown, as the first embodiment of the present invention, the second abutting structure 231 is connected to the frame structure 21 through the second connecting component 232, so that the second abutting structure 231 can be detachably connected to the frame structure 21, which is convenient for cleaning the second abutting structure 231, or replacing different types of second abutting structures 231 according to different needs, so that the multifunctional chair as a whole is more diversified. In this embodiment, a groove structure with an opening is provided on the frame structure 21, and a clamping strip structure matching the groove structure is provided through the second connecting component 232. The second abutting structure 231 is connected to the groove structure on the frame structure 21 through the clamping strip structure, which is convenient for installation and disassembly. Of course, in other embodiments, the groove structure and the clamping strip structure can also be provided as other clamping structures, or provided as any other detachable connection structure such as a hook structure, an adhesive structure, or a combination of several detachable connection structures, which can also achieve convenient cleaning and replacement of different types of second abutting structures 231. Of course, in other embodiments, the second connecting component 232 may not be provided, and the second abutment structure 231 may be directly connected to the frame structure 11 by wrapping part or all of the structure of the end portion thereof around the outside of the frame structure 21, thereby simplifying the structure and facilitating production and processing.

[0158] like Figure 9-10 As shown, as the first embodiment of the present invention, the first abutment structure 131 and the second abutment structure 231 are configured as cloth structures, which reduces the cost. Of course, the cloth structure can be made of elastic material to improve the flexibility when sitting or lying, or it can be made of non-elastic material to improve the hardness when sitting or lying. In other embodiments, the cloth structure can also be replaced by any one or a combination of several other structures such as leather structure, bamboo structure, rattan structure, plastic structure, wooden structure, etc., which can also achieve contact and support for the buttocks, legs, back, waist and other parts of the human body when sitting or lying, and make the multifunctional chair more diversified.

[0159] like Figure 6As shown, as the first embodiment of the present invention, the frame structure 11 is configured as an upward convex arc structure, in particular, it is configured as an upward convex arc structure which gradually descends from the first connection position 103 of the frame structure 11 in the direction of the end 102, and the frame structure 21 is configured as an upward convex arc structure matching the end 102 of the frame structure 11. Since the first abutment unit 13 extends from the position close to the first connection position 103 in the direction of the end 102, when the multifunctional chair is in the first posture of a reclining chair or a seat, the human body can lean back as a whole to sit or lie on the first abutment unit 13 and the second abutment unit 23 arranged on the first frame unit 1 and the second frame unit 2, thereby achieving whole body pressure relief and relaxation, and the upward convex arc structure allows the buttocks, legs, back, waist and other parts to be in contact with the first abutment unit 13 and the second abutment unit 23 arranged on the first frame unit 1 and the second frame unit 2. The first abutment unit 13 and the second abutment unit 23 fit more closely, and the stress points are more dispersed, so as to be more comfortable and relaxing; when the multifunctional chair is in the second posture of fitness equipment, the human body can lie or lie on the first abutment unit 13 and the second abutment unit 23 arranged on the first frame unit 1 and the second frame unit 2 in a gradually descending posture from the edge position of the first abutment unit 13 close to the first connection position 103 as a whole, and perform fitness movements such as sit-ups. Compared with lying on a flat surface to perform such movements, the intensity of fitness is increased and the fitness effect is improved, that is, the stretching amplitude of the legs, waist, abdomen, back, shoulders, neck and other parts is increased, and the fitness effect is improved. Moreover, the overall gradually descending posture is more in line with the human body structure, and it is more comfortable to perform fitness movements such as sit-ups. Of course, in other embodiments, the frame structure 11 can also be set to a convex arc structure at a certain position between the first connection position 103 and the end 102 that is higher than the first connection position 103, so that when the multifunctional chair is in the first posture of a reclining chair or a seat, only the upper body and buttocks and other parts of the human body can be tilted backward to sit or lie on the first abutment unit 13 and the second abutment unit 23 set on the first frame unit 1 and the second frame unit 2, so as to achieve a certain degree of pressure relief and relaxation. When the multifunctional chair is in the second posture of fitness equipment, the human body can lie or lie on the first frame unit 1 and the second frame unit 2 with the upper body and buttocks and other parts gradually descending from the highest position of the convex arc structure. Performing fitness exercises such as sit-ups on the first abutment unit 13 and the second abutment unit 23 can increase the intensity of fitness compared to lying on a flat surface to perform such exercises, and replace existing independent fitness equipment. Alternatively, the frame structure 11 can also be set as a straight structure. Since the end 102 of the frame structure 11 is lower than the height of the first connection position 103, the fitting area can be increased to a certain extent, the comfort can be improved, and the relative angle between the first abutment unit 13 on the frame structure 11 and the second abutment unit 23 on the frame structure 21 is equal to 180 degrees. Compared with the existing technology, the stretching amplitude of the legs, waist, abdomen, back, shoulders, neck and other parts can be increased, thereby improving the fitness effect.

[0160] like Figure 11-13 As shown, as the second embodiment of the present invention, a multifunctional chair is disclosed. The difference between the second embodiment and the first embodiment is that the multifunctional chair further includes a third support unit 5, which is arranged at the rear and lower part of the second frame unit 2, and the lower end of the third support unit 5 abuts against the first frame unit 1. In this embodiment, on the basis of locking the position of the frame structure 21 and the frame structure 1 11 connected thereto by the third rotating assembly 8 in the first embodiment, the third support unit 5 is added to support and further lock the rear part of the second frame unit 2, further enhancing the stability and load-bearing performance of the second frame unit 2 when the multifunctional chair is in the first posture of a reclining chair or a seat, preventing the second frame unit 2 from rotating backward due to the force after the back, waist and other parts abut against the second frame unit 2, and applying a support force to the rear part of the second frame unit 2 in a forward and upward direction, so that the third support unit 5 supports the second frame unit 2 more positively and directly after the force is applied, and the support effect is better. Of course, in other embodiments, the third support unit 5 can also be set directly below or in front of the second frame unit 2, or a combination of several directions, so as to apply a support force or pulling force directly above or behind the second frame unit 2, and can also enhance the stability and load-bearing performance of the second frame unit 2 when the multifunctional chair is in the first posture of a recliner or a seat. In other embodiments, the lower end of the third support unit 5 can also be against the second support unit 4, which also has the same effect. In other embodiments, the third support member 51 can also be rotatably connected to the frame structure 1 11, and the third adjustment component 52 can be set on the frame structure 2 21, which also has the same effect.

[0161] like Fig.11As shown, as the second embodiment of the present invention, the third support unit 5 includes a third support member 51 and a third adjustment assembly 52, wherein the upper end of the third support member 51 is rotatably connected to the movable ends of the two frame structures 21 respectively, and the lower end is adjustably connected to the third adjustment assembly 52, so that the third support member 51 can be rotated relative to the frame structure 21 at the connection position with the frame structure 21, and the lower end of the rotated third support member 51 is connected to the new position on the third adjustment assembly 52 after adjustment relative to the third adjustment assembly 52, so as to adjust the support angle of the third support member 51 to the frame structure 21, and then support the different opening angles between the second abutting unit 23 on the frame structure 21 and the first abutting unit 13 on the frame structure 1 11. Two third adjustment assemblies 52 are provided, and the two third adjustment assemblies 52 are correspondingly provided on the two frame structures 1 11, and are used to adjust the position of the lower end of the third support member 51 relative to the two frame structures 1 11. Of course, the third adjustment component 52 and the frame structure 11 can adopt a fixed connection structure such as welding or riveting to enhance the stability of the connection, or a detachable connection structure such as a threaded structure, a screw, a buckle, etc. can be adopted to facilitate assembly or replacement. In addition, in other embodiments, the third adjustment component 52 can also be set on the second support member 41 or the second reinforcement member 42, or on a combination of these components, which also has the same effect. In other embodiments, the third adjustment component 52 can also be omitted, and the lower end of the third support member 51 can be directly connected to the frame structure 11 in an adjustable manner, which can also be used to adjust the position of the lower end of the third support member 51 relative to the two frame structures 11.

[0162] like Fig.13As shown, as the second embodiment of the present invention, the third adjustment component 52 includes an adjustment member 3 521, and a plurality of adjustment channels 3 522 are arranged on the adjustment member 3 521. Each adjustment channel 3 522 is cooperated with the lower end of the third support member 51 for connecting, locking and supporting the lower end of the third support member 51, thereby improving the stability of the third support unit 5 supporting the frame structure 21. At the same time, the adjustment channel 3 522 is cooperated with the rotation angle of the third rotating component 8, so that the second abutment unit 23 on the frame structure 21 and the first abutment unit 13 on the frame structure 1 11 can have an adjustment channel 3 522 on the adjustment member 3 521 corresponding to the lower end of the third support member 51 that is angularly supported by the frame structure 21 at that time under any angle locking of the third rotating component 8, thereby realizing the support and locking of the second frame unit 2 under each angle locking condition. Of course, in other embodiments, the adjustment channel three 522 can also be set to cooperate with only a partial rotation angle of the third rotating component 8, so that the third support unit 5 is only used for further supporting the second abutment unit 23 on the frame structure two 21 and the first abutment unit 13 on the frame structure one 11 at a partial opening angle, and the stability of the third support unit 5 supporting the frame structure two 21 can also be improved.

[0163] like Fig.13As shown, as the second embodiment of the present invention, the adjustment channel three 522 is arranged to be a groove-type structure with an open upper end, and the third support member 51 includes a support member three 511 and a clamping member three 512, wherein two support members three 511 are arranged, and the upper ends of the two support members three 511 are rotatably connected to the two frame structures two 21 through hinge members three 513, respectively, and the lower ends are respectively connected to the positions close to the two ends on the clamping member three 512, and the clamping member three 512 between the position where the two support members three 511 are connected to the clamping member three 512 and the two ends of the clamping member three 512 is used to clamp with the groove-type structure, so as to support and lock the lower end of the third support member 51 in a certain adjustment channel three 522. In this embodiment, the groove structure is matched with the structure of the area between the end of the clamping member 3 512 and the position connected to the support member 3 511 to enhance the stability of the third adjustment component 52 supporting the lower end of the third support member 51, and the clamping member 3 512 is overall configured as a cylindrical rod structure, and the groove structure is configured as a corresponding U-shaped groove structure, which is convenient for the clamping member 3 512 to be connected to the adjustment channel 3 522 from all angles and directions through the opening, and the operation is simple, and the structure is simple and easy to produce and process. Of course, in other embodiments, the clamping member 3 512 can also only connect the end to the position connected to the support member 3 511. The structure of the area between the positions where the support members three 511 are connected is set to a cylindrical structure, and the structure of the area between the positions where the two support members three 511 are connected is set to a square structure, a polygonal structure or other structures, which can also facilitate the clamping member three 512 to be connected to the adjustment channel three 522 from various angles and directions through the opening, or the clamping member three 512 can be set to a square structure, a polygonal structure or other structures that match the groove structure, or set to other structures that do not match the groove structure, which can also support and lock the lower end of the third support member 51 in a certain adjustment channel three 522.In this embodiment, the opening of the groove structure is composed of a snap-fitting portion 1 523 and a snap-fitting portion 2 524 arranged at intervals, and the interval width between the snap-fitting portion 1 523 and the snap-fitting portion 2 524 is smaller than the width of the groove structure, and the snap-fitting portion 1 523 and the snap-fitting portion 2 524 are made of a slightly elastic material, so that after the end of the snap-fitting member 3 512 is snapped into the groove structure, the snap-fitting member 3 512 can be firmly confined in the groove structure by the snap-fitting portion 1 523 and the snap-fitting portion 2 524 to prevent loosening, and the snap-fitting portion 1 523 slightly protrudes from the inner side of the groove structure, and the snap-fitting portion 2 524 relatively protrudes more from the inner side of the groove structure, that is, the end of the snap-fitting member 3 512 is mainly confined by the snap-fitting portion 2 524, so that when the frame structure 21 is moved along the frame structure When the head end 101 or the tail end 102 of the structure 11 rotates, that is, the third support member 51 is driven to move forward or backward relative to the third adjustment component 52, that is, the two ends of the clamping member 3 512 are respectively disengaged from a certain adjustment channel 3 522 and slide along the upper end surfaces of the clamping parts 1 523 and the clamping parts 2 524. When the frame structure 21 is adjusted to the required angle, the frame structure 21 or the third support member 51 is pressed downward, and the clamping member 3 512 is forcefully clamped into another adjustment channel 3 522, which makes the operation simpler and the use more convenient. Of course, in other embodiments, the opening of the groove structure can also be set to other structures with a width smaller than the width of the groove structure, so that the clamping member 3 512 can be firmly confined in the groove structure to prevent loosening. When the third support unit 5 is not needed, the third support unit 5 can be folded and stored behind the second frame unit 2 by simply disengaging the clamping member 3 512 from the adjusting member 3 521 and rotating the hinge member 3 513 relative to the frame structure 21, without affecting the use of the multifunctional chair as a seat, reclining chair or fitness equipment. Of course, the third support member 51 in this embodiment is made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the third support member 51 can also be made of metal materials such as wood and plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse. Of course, the third support unit 5 in this embodiment can also be used in other embodiments, so that the multifunctional chairs in other embodiments also have this effect.

[0164] like Figure 14-16As shown, as the third embodiment of the present invention, a multifunctional chair is disclosed. The difference between the third embodiment and the second embodiment is that the third rotating assembly 8 includes a third connecting member 821 and a rotating shaft 822, wherein the third connecting member 821 is connected to the second frame structure 21, one end of the rotating shaft 822 is connected to the first frame structure 11, and the other end is rotatably connected to the third connecting member 821. In this embodiment, the ratchet arm 811, ratchet 812, ratchet shaft 813, rotating arm 814, non-return pawl 815, non-return pawl shaft 816, return member 817 and reset member 818 in the second embodiment are replaced by the third connecting member 821 and the rotating shaft 822, thereby simplifying the structure and facilitating production and processing. In this embodiment, the connection member 3 821 can rotate 360 ​​degrees in all directions relative to the rotation axis 3 822. When the multifunctional chair is in the first posture of a reclining chair or a seat, the second frame unit 2 can be rotated unimpeded along the direction of the head end 101 or the end 102 of the first frame unit 1, and the angle and position after rotation are locked by the third support member 5, so as to achieve the fixing of the opening angle of the second frame unit 2 relative to the first frame unit 1, increase the angle range of the frame structure 2 21 relative to the frame structure 1 11, simple operation, wide range of use, and applicable to more people. Of course, between the connection member 3 821 and the frame structure 2 21, between the rotation axis 3 822 and the frame structure 1 11, a fixed connection structure such as welding or riveting can be used to enhance the stability of the connection, or a detachable connection structure such as screws and buckles can be used to facilitate assembly or replacement. In addition, in other embodiments, the frame structure 21 and the frame structure 1 11 can also be directly rotatably connected through a rotation axis or other hinge structure, and the second frame unit 2 can be rotated 360 degrees relative to the first end 101 or the end 102 of the first frame unit 1. In other embodiments, the connecting member 3 821 can also be connected to the frame structure 1 11, and the rotation axis 3 822 can be connected to the frame structure 2 21, which also has the same effect. Of course, the third rotating component 8 in this embodiment can also be used in other embodiments, so that the multifunctional chair in other embodiments also has this effect.

[0165] like Figure 17-19As shown, as the fourth embodiment of the present invention, a multifunctional chair is disclosed. The difference between the fourth embodiment and the third embodiment is that the frame structure 11 is set as a split structure, including a frame part 111 and a frame part 2 112, wherein the frame part 2 112 is pivotally connected to the frame part 111, and the frame part 2 112 can be rotated relative to the frame part 111, so as to change the angle formed between the frame part 111 and the frame part 2 112. In this embodiment, when the frame part 2 112 is rotated relative to the frame part 1 111 to abut against the frame part 1 111, the frame part 2 112 can be folded and retracted, so that on the basis of folding and retracting the first support unit 3 and the positioning unit 9 of the multifunctional chair in the third embodiment, the frame part 2 112 is also folded and retracted, so that the multifunctional chair is completely folded and retracted, which greatly reduces the overall volume of the multifunctional chair and is more convenient for storage, packaging, carrying or transportation. When the frame part 2 112 is rotated relative to the frame part 1 111 When the frame part 112 is moved to the original state, the frame part 112 can be unfolded for use. Of course, the pivot connection between the frame part 111 and the frame part 112 is selected to enable the frame part 112 to rotate and retract relative to the frame part 111, and to form a pivot connection of the upper convex arc structure of the original frame structure 11 when unfolded for use. The pivot connection in this embodiment is a pivot structure 113, which includes a frame part 115 and two pivot connections 114 hinged at both ends of the frame part 115, so that The frame part 111 and the frame part 2 112 can be respectively hinged with two pivot connecting members 114, and can be folded and retracted relative to the two ends of the frame part 3 115. Compared with pivotally connecting the frame part 111 and the frame part 2 112 only by one pivot connecting member 114, this embodiment can make the multifunctional chair structure more compact after folding and retracting, and avoid the first frame unit 1 from causing conflict and unsmooth folding during the folding and retracting process due to its own structure. The frame part 3 115 is set to the shape of the frame structure 11. The frame structure 11 with the foldable and foldable effect still maintains the upward convex arc shape of the original frame structure 11, and has the same use effect as the original frame structure 11 in the first posture for a recliner or seat and the second posture for fitness equipment. Of course, in other embodiments, the frame part 3 115 can also be set to a downward convex arc shape or other shapes such as a straight rod shape that are different from the frame structure 11, and it can also avoid the first frame unit 1 from having conflicts or unsmooth folding during the folding and folding process due to its own structure.In this embodiment, the frame part 112 can be folded and folded under the frame part 111. Since the frame structure 11 is set as an upward convex arc structure, the multifunctional chair structure after folding and folding is more compact, which can prevent damage caused by bumps during storage, packaging or transportation. At the same time, since the frame structure 21 can be rotated 360 degrees relative to the frame structure 11, the second frame unit 2 and the third support unit 5 can be folded and folded under the frame part 111, which further reduces the overall volume of the multifunctional chair. The first 12 and the second lateral support structure 22 are arranged at intervals, so that the folded and retracted lateral support structure 12 and the second lateral support structure 22 can be placed alternately, further making the folded and retracted multifunctional chair structure more compact, and reducing the overall volume of the multifunctional chair again, making it more convenient to store, pack, carry or transport. Of course, in other embodiments, the frame part 111 and the second frame part 112 can also be connected only by a pivot connection part 114, and the second frame part 112 can also be folded and retracted under the frame part 111. In other embodiments, the second frame part 112, the second frame unit 2 and the third support unit 5 can also be folded and retracted above the frame part 111, which can also reduce the overall volume of the multifunctional chair and facilitate storage, packaging, carrying or transportation. In the present embodiment, only one pivot structure 113 is provided, so that the frame structure 11 as a whole can be folded in half. In other embodiments, two, three or even more pivot structures 113 can be provided on the frame structure 11, so that the frame structure 11 has a folding effect of three folds, four folds or even more folds. In other embodiments, the frame part 111 and the frame part 2 112 can also be connected by a retractable structure, and the overall volume of the multifunctional chair can be reduced by shortening the overall length of the frame structure 11, which is more convenient for storage, packaging, carrying or transportation. Of course, the frame structure 11 in this embodiment can also be used in other embodiments, so that the multifunctional chairs in other embodiments also have this effect. The multifunctional chair provided with the frame structure 11, the third rotating component 8 can be connected to any one or a combination of the frame part 111, the frame part 2 112, the pivot structure 113 or the second support member 41, and the second frame unit 2 can be rotatably connected with the first frame unit 1, so that the multifunctional chair has two usage states: a first posture for a recliner or a seat and a second posture for fitness equipment.

[0166] like Figure 20-21As shown, as the fifth embodiment of the present invention, a multifunctional chair is disclosed. The difference between the fifth embodiment and the first embodiment is that the pivot structure 113 in the fourth embodiment is arranged on the frame structure 11. Since the rotation angle between the ratchet arm 811 and the rotating arm 814 has a certain range limitation, the second frame unit 2 and the third support unit 5 can be folded and stored above the frame part 111. On the basis of the first embodiment, the overall volume of the multifunctional chair can be reduced to facilitate storage, packaging, carrying or transportation.

[0167] like Figure 22-23As shown, as the sixth embodiment of the present invention, a multifunctional chair is disclosed. The first difference between the sixth embodiment and the fourth embodiment is that the first support member 31 is provided as a split structure, including a first support portion 311 and a second support portion 312, wherein the first support member 31 is directly connected to the first connection position 103 on the frame structure 11, but not connected through the first rotating assembly 6, and the second support portion 312 is pivotally connected to the first support portion 311, and the second support portion 312 can be rotated relative to the first support portion 311, so as to change the angle formed between the first support portion 311 and the second support portion 312. In this embodiment, when the second support portion 312 is rotated relative to the first support portion 311 to abut against the lower side of the frame portion 111, the second support portion 312 can also be folded and retracted, and the overall volume of the multifunctional chair can be reduced, which is convenient for storage, packaging, carrying or transportation. When the second support portion 312 is rotated relative to the first support portion 311 to the original state, the second support portion 312 can be unfolded for use. In this embodiment, the second pivot structure 313 between the first support portion 311 and the second support portion 312 is a hinge structure, which has a simple structure and is easy to assemble and use. Of course, in other embodiments, the second pivot structure 313 can also be made of other pivot connecting parts that can enable the second support portion 312 to rotate and fold relative to the first support portion 311, and can form the shape structure of the original first support portion 31 when unfolded and used, and can also enable the second support portion 312 to switch between a folded state and an unfolded state. In addition, in the present embodiment, the lower end of the first support portion 311 is arranged close to the first connection position 103, and the positioning connection member 91 is only arranged on the second support portion 312, so that the second support portion 312 after folding and folding is closer to the frame structure 11, thereby making the multifunctional chair more compact as a whole after folding and folding. Of course, in another embodiment, the lower end of the first support portion 312 can also be arranged slightly away from the first connection position 103, and the positioning connection member 91 can also be arranged on both the first support portion 311 and the second support portion 312, or only on the first support portion 311, so that the second support portion 312 can be rotated and folded relative to the first support portion 311, and switched between a folded and unfolded state. In addition, a positioning protrusion is further provided at the connection end of the first support portion 311 and the second support portion 312, and a positioning groove is correspondingly provided at the connection end of the second support portion 312 for positioning the second support portion 312 after unfolding, thereby enhancing the stability of the connection and preventing the first support portion 311 or the second support portion 312 from twisting, skewing, etc. The first support member 31 in this embodiment is made of wood material to enhance comfort. In other embodiments, the first support member 31 can also be made of metal materials such as steel and iron or plastic materials, or other materials, or a combination of these materials to make the multifunctional chair more diverse.Of course, the first support member 31 in this embodiment can also be used in other embodiments, so that the multifunctional chair in other embodiments also has this effect.

[0168] like Fig. 22 As shown, the second difference between the sixth embodiment and the fourth embodiment is that the first support member 31 is set to a structure that is narrow at the top and wide at the bottom, replacing the rod structure in the fourth embodiment, so that the lower end surface of the first support member 31 has a larger contact area with the installation end surface such as the ground, thereby improving the overall stability and load-bearing performance of the multifunctional chair. Of course, the first support member 31 in this embodiment can also be used in other embodiments, so that the multifunctional chairs in other embodiments also have this effect.

[0169] like Fig. 22 As shown, the third difference between the sixth embodiment and the fourth embodiment is that the second support unit 4 is connected to the main body and the end 102 of the first support unit 3 near the end 102, that is, the second support unit 4 which is set as an integral structure with the frame structure 11 in the fourth embodiment is replaced by an independent second support unit 4, and the second support unit 4 includes two second support members 41 which are respectively connected to the main body and the end 102 of the frame structure 11 near the end 102, and a second reinforcement member 42 arranged between the two second support members 41, and the second support member 41 is set to a structure that is narrow at the top and wide at the bottom, replacing the rod structure in the fourth embodiment, so that the lower end face of the second support member 41 has a larger contact area with the installation end face such as the ground, thereby improving the overall stability and load-bearing performance of the multifunctional chair. In this embodiment, the second support member 41 is connected to the main body and the end 102 of the frame structure 11 near the end 102, which increases the contact area of ​​the connection area and improves the stability of the connection. Of course, in other embodiments, the second support member 41 can also be connected to the end 102 of the frame structure 11 or a position near the end 102. The second support member 41 and the frame structure 11 can be connected by a fixed connection structure such as welding or riveting to improve the stability of the connection, or can be connected by a detachable connection structure such as screws or buckles to facilitate installation and disassembly. The second support member 41 in this embodiment is made of wood material to enhance comfort. In other embodiments, the second support member 41 can also be made of metal materials such as steel, iron, or plastic materials, or other materials, or a combination of these materials, so that the multifunctional chair is more diverse. Of course, the second support member 41 in this embodiment can also be used in other embodiments, so that the multifunctional chairs in other embodiments also have this effect.

[0170] like Figure 24-25As shown, as the seventh embodiment of the present invention, a multifunctional chair is disclosed, and the first difference between the seventh embodiment and the fourth embodiment is that the third support unit 5 includes an upper third support member 531 and a lower third support member 532, wherein the upper end of the upper third support member 531 is rotatably connected to the frame structure 21, the upper end of the lower third support member 532 is cooperatively connected to the upper third support member 531, and the lower end of the lower third support member 532 is detachably connected to the frame structure 11. The upper third support member 531 and the lower third support member 532 in this embodiment replace the third support member 51 and the third adjustment assembly 52 in the fourth embodiment. The upper third support member 531 and the lower third support member 532 can also cooperate with each other to support the frame structure 21 at various angles. In other embodiments, the lower end of the lower third support member 532 can also be movably connected to the frame structure 11 through an adjustable structure, and the frame structure 21 can be supported at various angles through the adjustable structure or in combination with the cooperation structure of the upper third support member 531 and the lower third support member 532. Of course, in other embodiments, the lower end of the lower third support member 532 can also be connected to the second support unit 4, which also has the same effect. In this embodiment, the upper third support member 531 and the lower third support member 532 are configured to be a retractable structure. When it is necessary to adjust the height of the second frame unit 2 relative to the installation end surface such as the ground or the angle relative to the first abutting unit 13, the connection end three 5321 is gradually retracted and hidden in the installation channel three 5311, that is, the height of the second frame unit 2 relative to the installation section such as the ground is lowered, and the angle of the second frame unit 2 relative to the first abutting unit 13 is increased. When the lower third support member 532 is gradually stretched and unfolded relative to the upper third support member 531, the height of the second frame unit 2 relative to the installation end surface such as the ground is increased, and the angle of the second frame unit 2 relative to the first abutting unit 13 is reduced. The operation is simple and easy to use. Of course, in other embodiments, the upper third support member 531 and the lower third support member 532 can also be connected to each other by adopting other adjustable structures such as a slide rail structure and a snap structure, and the frame structure 21 at various angles can also be supported by changing the overall length of the upper third support member 531 and the lower third support member 532. Of course, the upper third support member 531 and the lower third support member 532 in this embodiment are made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the upper third support member 531 and the lower third support member 532 can also be made of metal materials such as wood and plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse. Of course, the third support unit 5 in this embodiment can also be used in other embodiments, so that the multifunctional chair in other embodiments also has this effect.

[0171] like Fig.24As shown, the second difference between the seventh embodiment and the fourth embodiment is that the first support member 31 is arranged as a split structure, including a first support portion 311 and a second support portion 312, wherein the upper end of the second support portion 312 is cooperatively connected with the lower portion of the first support portion 311, and the lower end surface is abutted against the installation end surface of the installation medium such as the floor, mat, sand and stone, and various indoor or outdoor platforms. By changing the overall length of the first support portion 311 and the second support portion 312, the height between the first connection position 103 on the frame structure 11 and the installation end surface such as the ground can be changed. In this embodiment, the first support member 31 of the integrated structure in the fourth embodiment is replaced by a first support member 31 of a split structure including a first support portion 311 and a second support portion 312. Through the structural coordination between the second support portion 312 and the first support portion 311, the first support member 31 supports the first connection position 103 of the frame structure 11 and can be folded and collapsed under the frame structure 11 by the first rotating component 6. In addition, the length of the first support member 31 can be adjusted to achieve adjustment of the overall height of the multifunctional chair, so that the multifunctional chair has richer usage states and a wider range of applications. In this embodiment, the second support portion 312 and the first support portion 311 are configured as a retractable structure. The overall height of the multifunctional chair can be adjusted by changing the overall length of the second support portion 312 and the first support portion 311. The operation is simple and easy to use. Of course, in other embodiments, the first support portion 311 and the second support portion 312 can also be connected to each other by using other adjustable structures such as a slide rail structure and a snap structure. The overall height of the multifunctional chair can also be adjusted by changing the overall length of the first support portion 311 and the second support portion 312. In addition, in the present embodiment, the lengths of the first support portion 311 and the second support portion 312 are substantially the same, and the two positioning connectors 91 are respectively arranged between the two first support portions 311 and between the two second support portions 312, so that the overlapping length of the retracted second support portion 312 and the first support portion 311 is longer, and the sum of the lengths of the unfolded second support portion 312 and the first support portion 311 is longer, thereby making the height adjustment range of the multifunctional chair as a whole by the first support portion 31 greater. At the same time, the interval between the two positioning connectors 91 also becomes larger or smaller, which can adapt to the placement or positioning of feet, calves and other parts with different interval sizes. Of course, in other embodiments, the lengths of the first support portion 311 and the second support portion 312 can also be set to have a larger gap, and the two positioning connectors 91 can also be arranged only on the first support portion 311 or only on the second support portion 312, and the height of the multifunctional chair as a whole can also be adjusted by changing the overall length of the first support portion 311 and the second support portion 312.Of course, the first support part 311 and the second support part 312 in this embodiment are made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the first support part 311 and the second support part 312 can also be made of metal materials such as wood and plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse. Of course, the first support member 31 in this embodiment can also be used in other embodiments, so that the multifunctional chair in other embodiments also has this effect.

[0172] like Fig.24As shown, the third difference between the seventh embodiment and the fourth embodiment is that the second support member 41 is provided as a split structure, including a third support portion 411 and a fourth support portion 412, wherein the upper end of the fourth support portion 412 is connected with the lower portion of the third support portion 411 in cooperation with each other, and the lower end surface is against the installation end surface of the installation medium such as the floor, mat, sandstone, and various indoor or outdoor platforms, and the height between the rear end of the frame structure 11 and the installation end surface such as the ground can be changed by changing the overall length of the third support portion 411 and the fourth support portion 412. In this embodiment, the second support member 41 of the integrated structure in the fourth embodiment is replaced by a second support member 41 of the split structure including the third support portion 411 and the fourth support portion 412. Through the structural cooperation between the fourth support portion 412 and the third support portion 411, on the basis of the second support member 41 supporting the rear end of the frame structure 11, the length of the second support member 41 can be adjusted to achieve the height adjustment of the rear end of the multifunctional chair, so that the multifunctional chair has a richer use state and a wider range of applications. In this embodiment, the fourth support portion 412 and the third support portion 411 are arranged to be a retractable structure. The height of the rear end of the multifunctional chair can be adjusted by changing the overall length of the fourth support portion 412 and the third support portion 411. The operation is simple and easy to use. Of course, in other embodiments, the third support portion 411 and the fourth support portion 412 can also be connected to each other by adopting other adjustable structures such as a slide rail structure and a snap structure. The height of the rear end of the multifunctional chair can also be adjusted by changing the overall length of the third support portion 411 and the fourth support portion 412. In addition, the second reinforcing member 42 in this embodiment is arranged between the ends of the two fourth supporting parts 412, thereby increasing the contact area between the second supporting unit 4 and the mounting end surface such as the ground, and improving the stability of the multifunctional chair when placed. In addition, the second reinforcing member 42 also connects the second supporting members 41 on both sides as a whole, which is convenient for folding or retracting the second supporting unit 4 relative to the first frame unit 1. Of course, in other embodiments, the second reinforcing member 42 can also be arranged between other positions of the two fourth supporting parts 412, or between the two third supporting parts 411, to enhance the structural stability and load-bearing performance of the second supporting unit 4. Of course, the third supporting part 411 and the fourth supporting part 412 in this embodiment are made of metal materials such as steel and iron to enhance the firmness and reliability of the structure. In other embodiments, the third supporting part 411 and the fourth supporting part 412 can also be made of metal materials such as wood, plastic or other materials, or a combination of these materials, so that the multifunctional chair is more diverse. Of course, the second supporting member 41 in this embodiment can also be used in other embodiments, so that the multifunctional chair in other embodiments also has this effect.

[0173] like Fig.24As shown, the fourth difference between the seventh embodiment and the fourth embodiment is that the second support unit 4 is rotatably connected to the first frame unit 1 through the second rotating assembly 7. In this embodiment, by adding the second rotating assembly 7, the second support unit 4 can be rotated relative to the first frame unit 1. On the one hand, the relative angle between the second support unit 4 and the first frame unit 1 can be adjusted to change the angle between the second support unit 4 and the mounting end surface such as the ground and the overall height of the multifunctional chair, thereby changing the support direction of the second support unit 4 to the first frame unit 1, forming different support structures, so that the multifunctional chair has a richer use state. On the other hand, after the second support unit 4 is rotated to abut against the first frame unit 1, the second support unit 4 can be folded and folded separately, thereby providing more folding and folding methods for the multifunctional chair. In this embodiment, two second rotating assemblies 7 are provided, and the second support member 41 on the same side is connected to the frame structure 11 respectively through a second rotating assembly 7, and rotates relative to the frame structure 11 on the same side at the same time under the drive of the second reinforcement member 42, so as to facilitate the folding and folding of the second support unit 4 separately.

[0174] like Fig.25As shown, as the seventh embodiment of the present invention, the second rotating component 7 includes a connecting member 2 71, a rotating shaft 2 72 and a limiting member 2 73, wherein one end of the connecting member 2 71 is hinged to the frame structure 11 through the rotating shaft 2 72, and the other end is hinged to the second support member 41 through another rotating shaft 2 72 arranged at a distance, so that the second support member 41 can rotate relative to the connecting position on the frame structure 11, and the rotating shaft 2 72 is arranged perpendicular to the direction of the frame structure 11, and the limiting member 2 73 is arranged on the upper part of the connecting member 2 71, so that the rotation trajectory of the two second support members 41 is limited in the parallel direction of the frame structure 11, thereby preventing the overall instability of the multifunctional chair due to the inconsistent rotation angles and directions of the two second support members 41. In this embodiment, when the second support unit 4 is rotated backward relative to the first frame unit 1 until the top of the second support member 41 abuts against the limit member 2 73, the second support unit 4 is unfolded under the drive of the second support member 41. At this time, the multifunctional chair can be stably placed on the ground or other installation end surface for use. When the second support unit 4 is rotated forward relative to the first frame unit 1 until it abuts against the first frame unit 1, the second support unit 4 is folded and collapsed under the drive of the second support member 41. At this time, the overall volume of the multifunctional chair is reduced, which can be convenient for storage, packaging, carrying or transportation. Of course, in other embodiments, a locking member can also be provided to achieve locking of the second support member 41 at any angle of rotation relative to the connecting member 2 71, thereby fixing the second support member 41 and the first frame unit 1 as a whole at different angles and positions, and used for support at different angles and positions, so that the multifunctional chair has a richer usage state. In other embodiments, the second rotating assembly 7 can also be configured as other connecting structures such as hinges that can rotate the second support member 41 relative to the frame structure 11, and can also switch the second support unit 4 between the unfolded state and the folded state, which is convenient for use, storage, packaging, carrying or transportation. In addition, the pivot connection 114 in the fourth embodiment or the pivot connection 2 313 in the sixth embodiment can also adopt the structure of the second rotating assembly 7 in this embodiment. Of course, the second rotating assembly 7 in this embodiment can also be used in other embodiments, so that the multifunctional chairs in other embodiments also have this effect.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0176] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A multifunctional chair, characterized in that: include: A first frame unit, wherein the first frame unit is provided with a head end and a tail end, and the first frame unit comprises a frame structure 1 which is arranged in parallel and is used for installing and supporting the first abutting unit; A first supporting unit, used to support the first frame unit, the first supporting unit is connected to the first connecting position of the first frame unit, and the height of the end of the first frame unit is lower than the height of the first connecting position; A first abutment unit is arranged on the first frame unit and is arranged near the first connection position, wherein the first abutment unit comprises a first abutment structure for a human body to sit or lie on; A second frame unit is arranged at the rear of the first frame unit, the second frame unit is rotatably connected to the first frame unit, the second frame unit includes a frame structure 2 arranged in parallel, used for mounting and supporting the second abutting unit, the second frame unit is rotatably connected to the first frame unit and can move between a first posture for a recliner or a seat and a second posture for fitness equipment, the second frame unit is in the first posture when it has an angle with the first frame unit, and is in the second posture when the second frame unit overlaps with the end of the first frame unit; A second abutment unit is arranged on the second frame unit, and the second abutment unit includes a second abutment structure for a human body to sit or lie on; The first connection position is arranged close to the head end of the first frame unit, a distance is left between the head end of the frame structure 1 and the first connection position, and the structure between the head end of the frame structure and the first connection position can be used as an armrest.

2. The multifunctional chair according to claim 1, characterized in that: The first frame unit includes a transverse support structure 1 which is arranged in parallel, and the transverse support structure 1 is arranged on the frame structure 1 at intervals. The frame structure 1 and the transverse support structure 1 are used for installing and supporting the first abutting unit.

3. The multifunctional chair according to claim 2, characterized in that: The frame structure is configured as an integrated structure.

4. The multifunctional chair according to claim 2, characterized in that: The frame structure is configured as a split structure, including: Frame part 1; The frame part 2 is pivotally connected to the frame part 1 to change the angle formed between the frame part 1 and the frame part 2, and the frame part 1 and the frame part 2 are adjusted to the unfolded and folded states.

5. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The second frame unit is connected to the first frame unit via a third rotating assembly, and is used for adjusting the second frame unit to a first posture and / or a second posture relative to the first frame unit, and / or locking the second frame unit in the first posture and / or the second posture.

6. The multifunctional chair according to claim 5, characterized in that: The second posture is formed when the second frame unit moves along the end direction of the first frame unit through the rotation of the third rotating assembly until it overlaps with the end of the first frame unit.

7. The multifunctional chair according to claim 6, characterized in that: The first posture is formed when the second frame unit moves along any direction of the head end or the tail end of the first frame unit through the rotation of the third rotating component to form an angle with the first frame unit.

8. The multifunctional chair according to claim 7, characterized in that: The second frame unit includes a second transverse support structure which is arranged in parallel. The second transverse support structure is arranged on the second frame structure at intervals. The second frame structure and the second transverse support structure are used for installing and supporting the second abutting unit.

9. The multifunctional chair according to claim 8, characterized in that: The third rotating assembly comprises: A ratchet with a ratchet arm, wherein the ratchet arm is connected to the frame structure 2 and / or the lateral support structure 2; A rotating arm, one end of which is hinged to the ratchet through a ratchet shaft, and the other end of which is connected to the frame structure 1 and / or the lateral supporting structure 1; A non-return pawl, hinged to the rotating arm via a non-return pawl shaft, and used to prevent the ratchet wheel from rotating; A return member, sleeved on the ratchet shaft, used for driving the non-return pawl to leave the ratchet; A reset member is used for resetting the non-return pawl.

10. The multifunctional chair according to claim 8, characterized in that: The third rotating assembly comprises: A connecting member three is connected to the frame structure two; One end of the rotating shaft three is connected to the frame structure one, and the other end is connected to the connecting member three.

11. The multifunctional chair according to claim 9 or 10, characterized in that: It also includes a third support unit for supporting the second frame unit, wherein the third support unit is arranged below the second frame unit, and the lower end of the third support unit abuts against the first frame unit and / or the second support unit.

12. The multifunctional chair according to claim 11, characterized in that: The third supporting unit comprises: A third support member, the upper end of which is rotatably connected to the frame structure 2; And / or a third adjusting component, used for adjusting the position of the third support member relative to the first frame unit, and the third adjusting component is arranged on the first frame unit and / or the second support unit.

13. The multifunctional chair according to claim 12, characterized in that: The third adjustment component includes an adjustment member three, on which a plurality of adjustment channels three are arranged for supporting the lower end of the third support member.

14. The multifunctional chair according to claim 13, characterized in that: The regulating channel three is configured as a groove-shaped structure with an open upper end, and is used for the lower end of the third supporting member to abut against.

15. The multifunctional chair according to claim 11, characterized in that: The third supporting unit comprises: An upper third support member, the upper end of which is rotatably connected to the frame structure 2; A lower third support member connected to the upper third support member, wherein the lower end of the lower third support member is connected to the first frame unit and / or the second support unit; By changing the relative length between the upper third support member and the lower third support member, the height position between the second frame unit and the installation end surface of the installation medium is changed.

16. The multifunctional chair according to claim 15, characterized in that: The upper third support member and the lower third support member are arranged relatively to form a telescopic structure.

17. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The number of the first supporting units is at least one, and the first supporting unit is arranged at an angle to the mounting end surface.

18. The multifunctional chair according to claim 17, characterized in that: The first support unit includes at least two first support members arranged in parallel, the upper ends of the first support members are connected to the first connection positions of the first frame unit, and the lower ends are used to abut against the installation end surface of the installation medium.

19. The multifunctional chair according to claim 18, characterized in that: The first supporting member is provided as an integral structure.

20. The multifunctional chair according to claim 18, characterized in that: The first support member is configured as a split structure, comprising: a first support portion; The second support part is pivotally connected to the first support part to change the angle formed between the first support part and the second support first support part, and the first support part and the second support are adjusted to the unfolded and folded states.

21. The multifunctional chair according to claim 20, characterized in that: The first support member is configured as a split structure, comprising: a first support portion; The second support part is arranged at the lower part of the first support part, and the relative length between the first support part and the second support part is changed, so that the height position between the first frame unit and the installation end surface of the installation medium is changed.

22. The multifunctional chair according to claim 21, characterized in that: The first supporting portion and the second supporting portion are arranged relatively to form a retractable structure.

23. The multifunctional chair according to any one of claims 18 to 22, characterized in that: The first support unit is rotatably connected to the first frame unit via a first rotating assembly.

24. The multifunctional chair according to claim 23, characterized in that: The first rotating assembly comprises: A connecting member 1 connected to a frame structure 1; The first rotating shaft has one end connected to the first supporting member and the other end connected to the first connecting member.

25. The multifunctional chair according to any one of claims 1 to 4, characterized in that: It also includes a positioning unit arranged on the first supporting unit. When the multifunctional chair is in the second posture, the positioning unit is used for placing and / or positioning the feet or legs of a human body.

26. The multifunctional chair according to claim 25, characterized in that: The positioning unit comprises: Positioning connecting members arranged at intervals, wherein both ends of the positioning connecting members are respectively connected to the first supporting member; And / or a positioning adjustment member, which is sleeved on the positioning connection member, and the outer end of the positioning adjustment member is formed with a positioning end surface for the foot or leg of the human body to abut against.

27. The multifunctional chair according to claim 26, characterized in that: The positioning adjustment member is configured as a flexible structure.

28. The multifunctional chair according to any one of claims 1 to 4, characterized in that: It also includes a second supporting unit, which is connected to the end of the first frame unit and / or to the main body close to the end.

29. The multifunctional chair according to any one of claims 1 to 4, characterized in that: It also includes a second supporting unit, which is composed of the end of the first frame unit and / or the main body of the first frame unit close to the end.

30. The multifunctional chair according to claim 29, characterized in that: The number of the second supporting units is at least one, and the second supporting unit is arranged at an angle to the mounting end surface.

31. The multifunctional chair according to claim 30, characterized in that: The second supporting unit includes at least two second supporting members arranged in parallel, the upper ends of the second supporting members are connected to the first frame unit, and the lower ends of the second supporting members are used to abut against the installation end surface where the medium is placed.

32. The multifunctional chair according to claim 31, characterized in that: The second support member is provided as an integral structure.

33. The multifunctional chair according to claim 31, characterized in that: The second support member is configured as a split structure, comprising: a third support portion; The fourth support portion is pivotally connected to the third support portion to change the angle formed between the third support portion and the fourth support portion, and the third support portion and the fourth support portion are adjusted between the unfolded state and the folded state.

34. The multifunctional chair according to claim 31, characterized in that: The second support member is configured as a split structure, comprising: a third support portion; The fourth support portion is arranged at the lower part of the third support portion, and the relative length between the third support portion and the fourth support portion is changed, so that the height position between the first frame unit and the installation end surface of the installation medium is changed.

35. The multifunctional chair according to claim 34, characterized in that: The third supporting portion and the fourth supporting portion are arranged relatively to form a retractable structure.

36. The multifunctional chair according to claim 28, characterized in that: The second supporting unit is rotatably connected to the first frame unit via a second rotating assembly.

37. The multifunctional chair according to claim 36, characterized in that: The second rotating assembly comprises: Connecting member 2, connected to frame structure 1 and / or the second supporting member; One end of the rotating shaft 2 is connected to the frame structure 1, and the other end is connected to the connecting member 2.

38. The multifunctional chair according to claim 31, characterized in that: The second supporting unit further includes at least one second reinforcing member disposed between the second supporting members, for reinforcing the second supporting unit.

39. The multifunctional chair according to any one of claims 1 to 4, characterized in that: It also includes an armrest structure, which is arranged at the head end of the first frame unit and is used for holding.

40. The multifunctional chair according to claim 39, characterized in that: The armrest structure is rotatably connected to the first frame unit.

41. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The first abutting structure is formed by extending from near and / or from the first connecting position along a direction close to the end of the first frame unit.

42. The multifunctional chair according to claim 41, characterized in that: The first abutment structure is connected to frame structure one by wrapping frame structure one in its end portion and / or in its entirety.

43. The multifunctional chair according to claim 41, characterized in that: The first abutting structure is connected to the frame structure 1 via a first connecting component, and the first connecting component is configured as a snap-fit ​​structure and / or a hook structure and / or an adhesive structure.

44. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The second abutting structure is disposed on the second frame unit and is formed by extending from one end close to the second frame unit along the direction close to the other end of the first frame unit.

45. The multifunctional chair according to claim 44, characterized in that: The second abutment structure is connected to the frame structure 2 by wrapping the end portion and / or the entire frame structure 2.

46. ​​The multifunctional chair according to claim 44, characterized in that: The second abutting structure is connected to the frame structure 2 via a second connecting component, and the second connecting component is configured as a snap-fit ​​structure and / or a hook structure and / or an adhesive structure.

47. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The first abutting structure and / or the second abutting structure are configured as a cloth structure and / or a leather structure and / or a bamboo structure and / or a rattan structure and / or a plastic structure and / or a wooden structure.

48. The multifunctional chair according to any one of claims 1 to 4, characterized in that: The frame structure 1 is configured as an upward convex arc structure.

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