Multifunctional fitness chair

Abstract

The invention discloses a multifunctional body-building chair which comprises a chair surface assembly, chair legs, a pedal stabilizing device and a chair back assembly, the pedal stabilizing device is telescopically arranged on the chair legs, a positioning assembly is arranged on the pedal stabilizing device to limit the telescopic length of the pedal stabilizing device and can be contained between the chair surface assembly and the chair legs, and a folding assembly and a rotating unit are oppositely arranged on the chair surface assembly. The chair back assembly is rotationally connected to one side of the chair surface assembly through the rotating unit, and the chair legs are rotationally connected to the other side of the chair surface assembly through the folding assembly, so that the chair legs, the pedal stabilizing device and the chair back assembly can be folded towards the direction of the chair surface assembly. The multifunctional body-building chair can be switched into various movement modes or seat modes in the unfolded state, the movement modes comprise pilates, chest pushing, bird flying, rowing and the like, and in the storage mode, the chair back assembly, the chair legs and the pedal stabilizing device are folded towards the plane where the chair face assembly is located, so that the structures are located on the same plane, the occupied area is reduced, and the space is saved. The multifunctional fitness chair has the advantages of miniaturization and convenience in storage.

Description

Technical Field

[0001] The present invention relates to the field of sports equipment, in particular to a multifunctional fitness chair. Background Art

[0002] A fitness chair is a piece of exercise equipment used for strength training and conditioning, and is widely used in gyms and personal home gyms. It typically consists of a seat frame, an adjustable seat, and back support. It is equipped with various attachment points for equipment such as barbells, dumbbells, or specialized resistance ropes. Fitness chairs help users safely and effectively perform muscle exercises such as chest presses, shoulder presses, and back extensions.

[0003] Although fitness chairs are designed for multi-functional use, most fitness chairs are only able to perform exercises with different stretching ranges due to their low degree of adjustability. This means that in order to achieve a comprehensive exercise effect, users may still need to purchase multiple different devices or accessories. For those with limited living space, fitness chairs cannot be used as regular seats when unfolded, and their loose structure still takes up too much space when folded.

[0004] Therefore, the current fitness chair has the disadvantages of a single exercise mode, being unsuitable for daily family use, and occupying a large area when folded and stored. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional fitness chair that, through a highly flexible structural design, has the advantages of adapting to various exercise modes in its unfolded state, switching between different usage scenarios, and being fully foldable for storage. The specific technical solution is as follows:

[0006] A multifunctional fitness chair includes a seat assembly, chair legs, a stabilizing pedal and a backrest assembly. The stabilizing pedal is telescopically arranged on the chair legs. A positioning assembly is provided on the stabilizing pedal to limit the telescopic length of the stabilizing pedal, and the stabilizing pedal can be accommodated between the seat assembly and the chair legs. A folding assembly and a rotating unit are relatively arranged on the seat assembly. The backrest assembly is rotatably connected to one side of the seat assembly via the rotating unit, and the chair legs are rotatably connected to the other side of the seat assembly via the folding assembly, so that the chair legs, the stabilizing pedal and the backrest assembly can be folded toward the seat assembly.

[0007] Furthermore, the chair back assembly can rotate the third rod portion on the rotating unit, and the chair legs can rotate the third pivot portion and the seventh pivot portion on the folding assembly. The third rod portion has a first axis, and a second axis is formed between the third pivot portion and the seventh pivot portion. The first axis and the second axis are both arranged close to the plane where the seat surface assembly is located.

[0008] Furthermore, the seat surface assembly includes a fourth frame portion, and a first frame portion and a second frame portion oppositely arranged at both ends of the fourth frame portion, the second axis is located between the first frame portion and the second frame portion, and the seat back assembly includes an extension portion, the two ends of the extension portion are respectively connected to the fourth frame portion and the third rod portion, and the end of the extension portion connected to the third rod portion extends in the vertical direction away from the second axis, so that the first axis and the second axis are respectively located on the upper and lower sides of the plane where the seat surface assembly is located.

[0009] Furthermore, the second axis is located on a side of the seat assembly away from the seat back assembly, and the seat back assembly is configured as a retractable structure to reduce the height of the multifunctional fitness chair after folding.

[0010] Furthermore, the pedal stabilizer includes a first rod portion and a pedal portion that are arranged opposite to each other, and a second rod portion connecting the first rod portion and the pedal portion, and the second rod portion is configured as a telescopic structure.

[0011] Furthermore, the second rod portion includes a third spring pin, and a third extension portion and a third base portion that are socketed with each other. A plurality of positioning holes are arranged at intervals on the third extension portion, and the third spring pin is arranged on the third base portion. The third spring pin can be passed through different positioning holes of the third extension portion to adjust and limit the relative position of the third extension portion and the third base portion.

[0012] Furthermore, the chair legs include a third support portion and a fourth support portion that are arranged opposite to each other, and the two ends of the first rod portion are respectively connected to the third support portion and the fourth support portion. The foot stabilizer also includes a fixed rod, and the two ends of the fixed rod are respectively connected to the third support portion and the fourth support portion, and the fixed rod is arranged between the seat surface assembly and the first rod portion. The footrest portion can rotate with the first rod portion as the axis so that the second rod portion can be connected to the fixed rod.

[0013] Furthermore, the fixing rod is arranged near the outer side walls of the third support part and the fourth support part, and the first rod part is arranged near the inner side walls of the third support part and the fourth support part, and an accommodating space is formed on the side of the fixing rod near the inner side wall, and a limiting groove is provided on the fixing rod, and the opening of the limiting groove is arranged opposite to the second rod part. The length of the second rod part can be shortened to no more than the length of the third support part, and the second rod part is fixed in the accommodating space so that when the second rod part is in a shortened state, the footrest part and the second rod part can all be arranged under the seat surface assembly, and the second rod part can be located in the same plane as the third support part.

[0014] Furthermore, it also includes a support plate, and the chair legs also include a first support part and a second support part arranged opposite to each other, and the two ends of the support plate are detachably connected to the ends of the first support part and the second support part close to the ground; or, the two ends of the support plate are detachably connected to the ends of the third support part and the fourth support part close to the ground.

[0015] Furthermore, the folding assembly includes a first connecting rod structure, which includes a first frame portion, a first support portion, a third support portion, a first inner connecting arm and a first outer connecting arm. The first pivot portion and the second pivot portion are relatively arranged on the first frame portion, the first support portion and the third support portion are movably connected to the first pivot portion, one end of the first inner connecting arm is movably connected to the second pivot portion, a fourth pivot portion is arranged on the first support portion, one end of the first outer connecting arm is connected to the fourth pivot portion, a third pivot portion that can move back and forth is arranged on the third support portion, the other end of the first inner connecting arm and the other end of the first outer connecting arm are movably connected to the third pivot portion, the distance between the first pivot portion and the fourth pivot portion is equal to the distance between the third pivot portion and the second pivot portion; the distance between the first pivot portion and the second pivot portion is equal to the distance between the third pivot portion and the fourth pivot portion.

[0016] Furthermore, it also includes a first locking component and a slide groove, which are arranged on the third support part. The first locking component can fix the third pivot part to the first end or the second end of the slide groove to put the folding component in the unfolded state or the storage mode and limit it.

[0017] Furthermore, the first locking assembly includes a first slider, and a first elastic pin and a second elastic pin arranged opposite to each other on the third support part. The first slider is arranged in the slide groove of the third support part. The rod body of the third pivot part is passed through the first slider and can move back and forth in the third support part with the first slider. A pin hole is set on the first slider. When the pin hole is opposite to the first elastic pin or the second elastic pin, the first elastic pin or the second elastic pin can be locked with the pin hole.

[0018] Furthermore, the first outer connecting arm and the first inner connecting arm are respectively arranged on both sides of the third supporting portion, and the first outer connecting arm is arranged between the first supporting portion and the third supporting portion.

[0019] Furthermore, the chair back assembly includes a resistance unit, a third rod, a rotating unit and a first back rod. The third rod is arranged close to the seat surface assembly, the rotating unit is arranged on the third rod, one end of the first back rod close to the seat surface assembly is connected to the third rod through the rotating unit, and one end of the first back rod away from the seat surface assembly is connected to the resistance unit. The first back rod is arranged as a retractable structure and can rotate with the third rod as the axis.

[0020] Furthermore, the first back rod includes a fourth elastic pin, and a first base part and a first extension part that are sleeved together. The fourth elastic pin is arranged on the first base part, and a plurality of limiting holes are arranged at intervals on the first extension part. The fourth elastic pin can be passed through the first base part and inserted into different limiting holes of the first extension part.

[0021] Furthermore, it also includes a second back rod, the second back rod and the first back rod are relatively arranged at two ends of the third rod part, the second back rod includes a second base part and a second extension part that are sleeved, the resistance unit includes a first resistance assembly, the first resistance assembly includes a first fixed ring, a first steering wheel, a first changing wheel and a first rope, the first fixed ring and the first changing wheel are arranged on a side close to the second extension part, the first steering wheel is arranged on a side close to the first extension part, one end of the first rope is connected to the first fixed ring, and the other end of the first rope passes through the first steering wheel and then passes through the chair back assembly by the first changing wheel, so that the first rope is folded horizontally.

[0022] Furthermore, the first steering wheel is arranged on the side of the first extension portion facing the second extension portion, and the first changing wheel is arranged on the rear side surface of the second extension portion; and / or, the pulley axis of the first changing wheel is parallel to the axis of the second back rod, and the pulley axis of the first steering wheel is perpendicular to the pulley axis of the first changing wheel; and / or, the two ends of the top rod are respectively connected to the first extension portion and the second extension portion, and the first fixing ring is arranged at one end of the top rod close to the second extension portion, so that the first fixing ring corresponds to the pulley groove of the first steering wheel.

[0023] The multifunctional fitness chair of the present invention has the following advantages:

[0024] 1. The multifunctional fitness chair is formed by combining a retractable stabilizer under the seat, foldable legs consisting of a four-link structure, and a rotatable backrest with an integrated resistance unit to form the overall structure of the chair. The multifunctional fitness chair can be switched to a variety of exercise modes or seat modes in the unfolded state. The exercise modes include Pilates, chest press, flyes, rowing, etc. The seat mode is a state where it can be used as a regular chair. The outer contour of the overall structure has no other redundant structures that affect the sitting posture except the seat, back and legs. In the storage mode, the back assembly, legs and stabilizer are folded toward the plane where the seat assembly is located, so that the above structures are in the same plane, reducing the floor space and making the multifunctional fitness chair compact and easy to store.

[0025] 2. The four-bar linkage structure with a specific length relationship can merge the four sides of the four-bar linkage structure into a straight line after the folding process. In combination with the fixed rod being arranged close to the outer side walls of the third and fourth support parts, and the first rod being arranged close to the inner side walls of the third and fourth support parts, the miniaturization effect and aesthetics of the storage mode are improved;

[0026] 3. A first locking assembly is provided on the chair legs to limit the folding assembly in the unfolded state and the storage mode, thereby ensuring the overall structural stability of the multifunctional fitness device in both the unfolded state and the storage mode, preventing the overall structure from being affected by external forces, and improving the exercise effect during exercise and the safety in the storage mode;

[0027] 4. After the pedal stabilizer is shortened, the second rod and the footrest are all located within the coverage of the lateral projection of the third support portion or the fourth support portion. Therefore, in the storage mode, the second rod, the footrest, the third support portion, and the fourth support portion are all in the same plane, without any protruding structure, and the storage is flat;

[0028] 5. The backrest assembly can be rotated relative to the seat assembly and can be locked at any angle. On the one hand, the backrest assembly and the seat assembly can be folded to the same plane, improving the space utilization rate of the storage mode. On the other hand, different opening and closing angles are used, combined with the resistance unit on the backrest assembly and the tilted leg structure to perform various exercises, thereby improving the expandability and flexibility of the multi-functional fitness chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a first schematic diagram of the multifunctional fitness chair of the present invention in an unfolded state.

[0030] Figure 2 This is an exploded view of the seat assembly, chair legs and folding assembly of the multifunctional fitness chair of the present invention.

[0031] Figure 3 Schematic diagram of the pedal stabilizer in the multifunctional fitness chair of the present invention.

[0032] Figure 4 This is a second schematic diagram of the multifunctional fitness chair of the present invention in the unfolded state.

[0033] Figure 5 It is a cross-sectional view of the pedal stabilizer in the multifunctional fitness chair of the present invention.

[0034] Figure 6 for Figure 2 Combined state diagram.

[0035] Figure 7 It is a side view of the seat assembly, chair legs and folding assembly of the multifunctional fitness chair of the present invention.

[0036] Figure 8 It is a cross-sectional view of the fourth supporting portion of the multifunctional fitness chair of the present invention.

[0037] Figure 9 This is a third schematic diagram of the multifunctional fitness chair of the present invention in the unfolded state.

[0038] Figure 10 Schematic diagram of the resistance unit in the multifunctional fitness chair of the present invention.

[0039] Figure 11 It is a cross-sectional view of the rotating unit in the multifunctional fitness chair of the present invention.

[0040] Figure 12 It is a three-dimensional schematic diagram of the multifunctional fitness chair of the present invention in folding mode.

[0041] Figure 13 It is a side view of the multifunctional fitness chair of the present invention in the folded mode.

[0042] Figure 14 Schematic diagram of another embodiment of the resistance unit in the multifunctional fitness chair of the present invention.

[0043] Figure 15 for Figure 14 Schematic diagram of the folding mode. DETAILED DESCRIPTION

[0044] In order to better understand the purpose, structure and function of the present invention, the multifunctional fitness chair of the present invention is described in detail below with reference to the accompanying drawings.

[0045] like Figures 1 to 15 As shown, the multifunctional fitness chair includes a seat assembly 100, chair legs 200, a folding assembly 300, a foot stabilizer 400, a chair back assembly 500 and a support plate 600. The unfolded state of the multifunctional fitness chair is similar to the common chair shape and can be used for exercise and daily use. When a human body sits on the multifunctional fitness chair in a normal sitting posture, the side of the multifunctional fitness chair close to the support plate 600 is defined as the front side of the multifunctional fitness chair, the side close to the chair back is defined as the back side of the multifunctional fitness chair, the side close to the left hand of the human body is defined as the left side of the multifunctional fitness chair, and the side close to the right hand of the human body is defined as the right side of the multifunctional fitness chair. The line connecting the front and the back is defined as the longitudinal direction, the line connecting the left and the right side is defined as the transverse direction, and the line connecting the upper and the lower sides is defined as the vertical direction.

[0046] The overall structure of the multifunctional fitness chair is symmetrically arranged in the transverse direction. The chair legs 200 are movably connected to the seat assembly 100 through the folding assembly 300. The chair legs 200 are arranged on the lower side of the seat assembly 100. The backrest assembly 500 is movably connected to the upper side of the seat assembly 100 relative to the chair legs 200. A resistance unit 501 and a pull rope are arranged on the backrest assembly 500. The stabilizing device 400 is adjustably arranged on the chair legs 200. The stabilizing device 400 can be unfolded for Pilates stabilizing exercise or can be adjusted and fixed on the chair legs 200. The chair legs 200 and the backrest assembly 500 are further moved toward the chair in the longitudinal direction. The seat assembly 100 folds, allowing it to be switched to various exercise modes or seat modes in the unfolded state. Exercise modes include Pilates, chest presses, flyes, and rowing. The seat mode allows it to be used as a regular chair. The overall structure, apart from the seat assembly 100, the back assembly 500, and the legs 200, has no other redundant structures that affect the sitting posture. In the stowed mode, the back assembly 500, legs 200, and foot stabilizers 400 fold toward the plane of the seat assembly 100, placing the aforementioned structures in the same plane. This reduces the floor space and provides the multifunctional fitness chair with the advantages of being compact and easy to store. The aforementioned "same plane" includes both being completely in the same plane and being parallel to each other and abutting against the same plane.

[0047] Figure 2 As shown, the seat assembly 100 of the multifunctional fitness chair includes a seat frame 101 and a seat cushion 102. The seat frame 101 is a square frame structure as a whole, including a first frame portion 103 located on the left side, a third frame portion 105 located on the front side, a second frame portion 104 located on the right side, and a fourth frame portion 106 located on the rear side, which are connected in sequence. The seat frame 101 is used to connect the chair legs 200 and the chair back assembly 500, and the seat cushion 102 is arranged on the upper side of the seat frame 101 to increase the comfort of use.

[0048] The chair legs 200 of the multifunctional fitness chair include four support parts, namely a first support part 201 and a second support part 202 arranged opposite to each other on the front side, the first support part 201 and the second support part 202 are also defined as front support parts, and a third support part 203 and a fourth support part 204 arranged opposite to each other on the rear side, the third support part 203 and the fourth support part 204 are defined as rear support parts, wherein the first support part 201 and the third support part 203 are located on the left side of the multifunctional fitness chair, and the second support part 202 and the fourth support part 204 are located on the right side of the multifunctional fitness chair, and the four support parts are long tubular structures, and the upper ends of the first support part 201 and the third support part 203 are rotatably connected to the first frame part 103, and the upper ends of the second support part 202 and the fourth support part 204 are rotatably connected to the second frame part 104, thereby achieving the effect that the chair legs 200 can be folded toward the seat support 101.

[0049] Among them, the chair back assembly 500 can rotate around the third rod portion 502 on the rotating unit 503, and the chair leg 200 can rotate around the third pivot portion 307 and the seventh pivot portion 311 on the folding assembly 300. The third rod portion has a first axis, and a second axis is formed between the third pivot portion 307 and the seventh pivot portion 311. The first axis and the second axis are both arranged close to the plane where the seat surface assembly 100 is located. The purpose of setting this structure is that when the chair back assembly 500 and the chair leg 200 are rotated to a position parallel to the plane where the seat surface assembly 100 is located, since their respective rotation axes are close to the seat surface assembly 100, the chair back assembly 500 and the chair leg 200 are located in a position close to the seat surface assembly 100, thereby reducing the longitudinal thickness of the multi-functional fitness chair in the folded state, which is conducive to miniaturized storage and overall coordinated beauty.

[0050] Furthermore, the third pivot portion 307 is arranged on the first frame portion 103, and the seventh pivot portion 311 is arranged on the third frame portion 105, so that the second axis is located between the first frame portion and the second frame portion. The backrest assembly includes an extension portion 107, and the two ends of the extension portion 107 are respectively connected to the fourth frame portion 106 and the third rod portion 502. The end of the extension portion 107 connected to the third rod portion 502 extends in the vertical direction away from the second axis, so that the first axis and the second axis are respectively located on the upper and lower sides of the plane where the seat surface assembly 100 is located. The purpose of setting up this structure is to make the first axis and the second axis close to the seat surface assembly 100 while avoiding the intersection between the chair legs 200 and the backrest assembly 500 folded around the corresponding axes, so that both can be folded to the same plane angle as the seat surface assembly 100, making the multifunctional fitness chair more compact and coordinated and beautiful when folded.

[0051] Preferably, the second axis is located on the side of the seat assembly 100 away from the backrest assembly 500, that is, it is arranged close to the first frame portion 103, so that the chair legs 200 overlap with the seat assembly 100 as much as possible in the vertical direction. At the same time, the backrest assembly 500 is arranged as a retractable structure in the direction relative to the seat assembly 100, thereby reducing the height of the backrest assembly 500, and then reducing the overall height of the multi-functional fitness chair after folding. On the one hand, it is conducive to the miniaturization of the multi-functional fitness chair. On the other hand, after the height of the backrest assembly 500 is reduced, it folds in the direction of the chair legs 200, forming sufficient space above the rear support legs. Combined with the support plate arranged on the rear support portion, the user can stand on the support plate and use the resistance unit on the backrest assembly to perform exercises such as flying birds and shoulder presses, thereby increasing usage scenarios and exercise modes.

[0052] Specifically, if Figure 3 and Figure 4As shown, the pedal stabilizer 400 is an I-shaped structure as a whole, including a first rod portion 401 and a pedal portion 402 arranged opposite to each other in front and back, a second rod portion 403 connecting the first rod portion 401 and the pedal portion 402, and a first spring (not shown in the figure). The two ends of the first rod portion 401 are respectively pivotally connected to the lower side of the third rod portion 502 and the lower side of the fourth rod portion, and the two ends of the second rod portion 403 are respectively connected to the middle of the first rod portion 401 and the middle of the pedal portion 402, so that the pedal portion 402 is driven by the second rod portion 403 to rotate with the first rod portion 401 as the axis, and at the same time, the second rod portion 403 is connected to the middle of the first rod portion 401 and the middle of the pedal portion 402. A plurality of ring bodies are arranged relatively on the upper side of 403 and the lower side of the extension portion 107 of the seat support 101, which are equivalent to connecting the hooks at both ends of the first spring to the third base portion 405 and the extension portion 107 of the second rod portion 403 described below, respectively, wherein one end of the third base portion 405 is fixedly connected to the first rod body, and a plurality of fixing portions are arranged at intervals on the other end of the third base portion 405, and the fixing portions are connected to the first spring, so that the second rod portion 403 is pulled toward the seat support 101 by the first spring. One or more first springs can be provided according to actual needs to adjust the resistance value during movement.

[0053] The second rod portion 403 in the present invention is configured as a retractable structure so that the distance between the footrest portion 402 and the first rod portion 401 can be adjusted. The purpose of setting up this structure is that when using the multifunctional fitness chair for Pilates steady-stepping exercises, the human body adjusts its sitting position and the foot steps on the footrest portion 402. Therefore, it is necessary to increase the length of the second rod portion 403, extend the footrest portion 402 to the front side and exceed the position of the first support portion 201 and the second support portion 202. After the exercise, the length of the second rod portion 403 can be shortened, so that the footrest portion 402 extends to the rear side and is located between the first support portion 201 and the third support portion 203, thereby avoiding the footrest portion 402 from colliding with the human body and causing injury, improving the applicability and safety while increasing the integrity and aesthetics of the appearance of the fitness chair.

[0054] Furthermore, a positioning assembly is provided on the pedal stabilizer to limit the telescopic length of the pedal stabilizer. The positioning assembly is provided as a third elastic pin 406 on the second rod portion 403 and a positioning hole matching structure provided on the third extension portion 404. Specifically, the second rod portion 403 includes a third extension portion 404 and a third base portion 405 that are mutually socketed, and a third elastic pin 406. A plurality of positioning holes are provided at intervals on the third extension portion 404. A spring is provided in the third elastic pin 406 so that the third elastic pin 406 is provided on the third base portion 405 and abuts against the connecting line where the plurality of positioning holes are located. By adjusting the third elastic pin 406, it can be passed through the third base portion 405 and provided on different positioning holes of the third extension portion 404, thereby limiting the relative position of the third extension portion 404 and the third base portion 405 to adjust the second rod portion 403 to the required length. Of course, a positioning component such as a ball plunger or a magnetic element that cooperates with each other can also be set between the second rod portion and the third extension portion to limit the telescopic length of the pedal stabilizer and enhance the stability of the pedal stabilizer in movement and storage modes.

[0055] Preferably, the pedal portion 402 includes a first pedal portion 407 and a second pedal portion 408 that are relatively arranged. The first pedal portion 407 corresponds to the left foot of the human body, and the second pedal portion 408 corresponds to the right foot of the human body. Furthermore, the number of the second rod portions 403 is set to two, and the first pedal portion 407 and the second pedal portion 408 are respectively connected to the first rod portion 401 through the corresponding second rod portions 403. This split-type pedal portion 402 allows the first pedal portion 407 and the second pedal portion 408 to be located at different heights, thereby realizing a movement mode in which the human body's feet alternately pedal up and down.

[0056] Further, such as Figure 5As shown, the split pedal portion 402 can form a complete structure, which is used for the exercise mode of synchronous pedaling of the human body and is easy to store. Specifically, the pedal portion 402 also includes a string tube 409, a stopper 410 and a pin 411. A second spring 412 is set in the string tube 409, and a cover 413 is set at one end of the string tube 409. The end of the string tube 409 without the cover 413 is passed through the right side of the second pedal portion 408 into the second pedal portion 408 and further inserted into the first pedal portion 407. A stopper 410 is set in the first pedal portion 407 to make the second pedal portion 407 The two ends of the second spring 412 abut against the cover 413 and the stopper 410, respectively. The pin 411 passes through the second pedal 408 and penetrates the string tube 409, as well as the first pedal 407 or the second pedal 408, to confine the string tube 409 within the first pedal 407 and the second pedal 408, that is, the pedal 402 is connected as a whole structure and can move up and down. When the string tube 409 needs to be removed, the second spring 412 can push the string tube 409 out of the second pedal 408 after the pin 411 is pulled out, thereby unlocking the first pedal 407 and the second pedal 408. It can be understood that the direction in which the string tube 409 enters the pedal 402 and the position of the pin 411 correspond to the position of the stopper 410. Therefore, the string tube 409 can also be inserted from the left side of the first pedal 407 by simply reversing the positions of the pin 411 and the stopper 410. This will not be described in detail here.

[0057] It should be noted that the split foot pedal portion 402 is only a preferred embodiment. Those skilled in the art can set the structure of the second rod portion 403 and the foot pedal portion 402 according to actual needs. For example, only one second rod portion 403 is set, and one end of the second rod portion 403 is connected to the integrated foot pedal portion 402, as long as the effect of moving the foot pedal portion 402 up and down and extending the second rod portion 403 can be achieved.

[0058] Preferably, Figure 4As shown, the pedal stabilizer 400 also includes a fixing rod 205, both ends of which are connected to the third support portion 203 and the fourth support portion 204 respectively. The fixing rod 205 is arranged on the upper side of the first rod portion 401 in a direction close to the seat surface assembly 100, and a snap ring 206 is provided on the side of the fixing rod 205 facing the second rod portion 403. The snap ring has an opening facing the second rod portion 403. When the second rod portion 403 can be rotated upward to the snap ring 206 with the first rod portion 401 as the axis, the second rod portion 403 is continued to be lifted upward, and the second rod portion 403 can be placed in the snap ring through interference fit, thereby fixing the second rod portion 403 to the fixing rod 205, avoiding displacement of the second rod portion 403 and the footrest portion 402 when not in use, thereby improving the stability and aesthetics of the storage mode. Of course, those skilled in the art may set a magnetic structure or a latching structure between the fixing rod 205 and the second rod portion 403 according to actual needs, as long as the second rod portion 403 can be fixed to the fixing rod 205 .

[0059] It should be noted that the seat cushion 102 of the multifunctional fitness chair of the present invention is arranged on the chair surface bracket 101. By adjusting the second rod portion 403, the footrest portion 402 is moved toward the first rod portion 401, so that the second rod portion 403 is in a shortened state. The length of the second rod portion 403 can be shortened to no more than the length of the third support portion 203, and then the second rod portion 403 is fixed to the fixing rod 205, so that the footrest portion 402 and the second rod portion 403 can be fixed to the lower side of the chair surface bracket 101 relative to the seat cushion 102, and switched to the seat mode. At this time, the footrest portion 402 and the second rod portion 403 are all located within the coverage range of the vertical projection (directly above) of the seat cushion 102, as shown in FIG. Figure 1 As shown, the tread stabilizer 400 does not protrude from the outer contours of the seat assembly 100 and the chair legs 200, thereby preventing the protruding tread stabilizer 400 from affecting the normal sitting posture of the human body, and improving the storage effect and aesthetics.

[0060] It needs to be further emphasized that Figure 1As shown, the edges of the third support portion 203 and the fourth support portion 204 facing the rear side are defined as the outer side wall 208, and the edges of the third support portion 203 and the fourth support portion 204 facing the front side are defined as the inner side wall 207. The fixing rod 205 is arranged close to the outer side wall 208 of the third support portion 203 and the fourth support portion 204, and the first rod portion 401 is arranged close to the inner side wall 207 of the third support portion 203 and the fourth support portion 204. As a result, after the second rod portion 403 is fixed to the fixing rod 205, the second rod portion 403 and the footrest portion 402 are all located within the coverage range of the lateral projection of the third support portion 203 or the fourth support portion 204. As a result, in the storage mode, the second rod portion 403, the footrest portion 402, the third support portion 203, and the fourth support portion 204 are all in the same plane, without generating a protruding structure, thereby achieving flat storage and further improving the space utilization rate in the storage mode.

[0061] Further, such as Figure 4 As shown, the support plate 600 is movably connected between the first support part 201 and the second support part 202, and the first support part 201 and the second support part 202 are arranged close to the ground side, which is used for human feet to step on in exercise mode to support the feet, and at the same time exert downward pressure on the fitness chair to keep the fitness chair stable as a whole. Specifically, the support plate 600 is connected to the support part through a quick-release pin 601, and the quick-release pin 601 includes a pin portion connecting the chair leg 200 and the support plate 600. An adjustment bolt 602 is provided at one end of the pin portion close to the support plate 600, and a shaft portion is provided at one end of the pin portion close to the chair leg 200. An adjustment handle is provided on the shaft portion, and the tightness of the pin portion can be adjusted by rotating the adjustment handle. It can be understood that by setting the quick-release pin 601, the pallet 600 can be quickly removed from the first support part 201 and the second support part 202. Accordingly, the pallet 600 can be movably connected between the third support part 203 and the fourth support part 204, and the third support part 203 and the fourth support part 204 are close to the ground, so as to adapt to other movement modes formed by the downward rotation of the chair back. The pallet 600 can be used efficiently to support the feet, and at the same time, downward pressure is applied to the fitness chair after stepping on it to keep the overall stability of the fitness chair. In addition, the pallet 600 can be removed in the storage mode to improve the storage effect.

[0062] like Figure 6 and Figure 7 As shown, a folding assembly 300 is provided below the seat cushion 102. The folding assembly 300 includes a first connecting rod structure 301 and a second connecting rod structure 302 symmetrically provided on the left and right sides. Therefore, the following description mainly focuses on the structure of one side, and the other side can be symmetrically provided.

[0063] Specifically, the first connecting rod structure 301 includes a first frame portion 103, a first support portion 201, a third support portion 203, a first inner connecting arm 303 and a first outer connecting arm 304. A first pivot portion 305 and a second pivot portion 306 are arranged on the first frame portion 103. The first support portion 201 and the third support portion 203 are movably connected to the first pivot portion 305. One end of the first inner connecting arm 303 is movably connected to the second pivot portion 306. A fourth pivot portion 308 is arranged on the first support portion 201. One end of the first outer connecting arm 304 is connected to the fourth pivot portion 308. A reciprocating third support portion 203 is arranged on the third pivot portion 307. The other end of the first inner connecting arm 303 and the other end of the first outer connecting arm 304 are movably connected to the third pivot portion 307. The distance between the first pivot portion 305 and the second pivot portion 306 plus the distance between the second pivot portion 306 and the third pivot portion 307 The distance between them is equal to the distance between the first pivot portion 305 and the fourth pivot portion 308 plus the distance between the fourth pivot portion 308 and the third pivot portion 307. The purpose of setting the above two distances to be equal is that when the distance between the first pivot portion 305 and the third pivot portion 307 is at a maximum value by rotating the four-bar structure, the above two distances can also be at a maximum value and are equal, that is, the first support portion 201, the third support portion 203, the first inner connecting arm 303, and the first outer connecting arm 304 can be located on a straight line in the same plane, thereby achieving a flat storage effect. In addition, the above-mentioned fixing rod 205 is arranged close to the outer side walls 208 of the third support portion 203 and the fourth support portion 204, and the first rod portion 401 is arranged close to the inner side walls 207 of the third support portion 203 and the fourth support portion 204, so that the chair leg 200 and the foot stabilizer 400 are stored in the same plane, thereby improving the miniaturization effect of the storage mode.

[0064] The first inner connecting arm 303 forms a stable triangular structure with the first frame portion 103 and the third support portion 203. The first outer connecting arm 304 forms a stable triangular structure with the first support portion 201 and the third support portion 203. The second inner connecting arm 309 of the second link structure 302 forms a stable triangular structure with the second frame portion 104 and the fourth support portion 204. The second outer connecting arm 310 forms a stable triangular structure with the second support portion 202 and the fourth support portion 204. This ensures that the seat support 101 is stably mounted on the chair legs 200, thereby ensuring that the fitness chair in its unfolded state is stably supported on the ground. The first frame portion 103 and the second frame portion 104 of the folding assembly 300 are relatively fixed. The third pivoting portion 307 and the corresponding seventh pivoting portion 311 of the second link structure 302 rotate, driving the chair legs 200 to quickly fold toward the seat assembly 100 to form a stowed position. This achieves convenient and efficient operation and a compact overall structure.

[0065] Furthermore, the distance between the first pivot portion 305 and the fourth pivot portion 308 is equal to the distance between the third pivot portion 307 and the second pivot portion 306, and the distance between the first pivot portion 305 and the second pivot portion 306 is equal to the distance between the third pivot portion 307 and the fourth pivot portion 308, that is, the first connecting rod structure 301 is set to a parallelogram structure. The purpose of setting the above structure is that, when in the unfolded state, two triangular structures of the same shape are formed on both sides of the third support portion 203, and each triangle will bear approximately equal stress, thereby reducing the possibility of one side being overloaded and the other side being underutilized, so that the vertical load borne by the first support portion 201 and the third support portion 203 is evenly distributed and transmitted downward. From a design perspective, using triangles of the same shape can make the folding component 300 look more symmetrical and beautiful, thereby improving the stability and aesthetics of the multi-functional fitness chair.

[0066] It should be noted that the first pivotal portion 305, the third pivotal portion 307, the second pivotal portion 306, the fourth pivotal portion 308, and the pivotal portions on the second connecting rod structure 302 mentioned above realize the rotational movement of multiple adjacent structures by setting a pivot structure. The pivot structure is provided with a rod body, and the two ends of the rod body are respectively inserted into the structure connected to it, so that the structures on both sides of the pivotal portion can realize the activity effect of rotating with the rod body as the axis.

[0067] Preferably, Figure 2 and Figure 8 As shown, a first locking assembly 312 is provided on the fourth support portion 204 of the second link structure 302 to limit the position of the folding assembly 300 in the unfolded state and the stowed mode. Of course, the first locking assembly 312 can also be provided on the third support portion 203, as long as the first locking assembly 312 can achieve the effect of limiting the position of the folding assembly 300. The following only describes the case where the first locking assembly 312 is provided on the fourth support portion 204.

[0068] Specifically, a long strip-shaped slide groove 316 is provided on one side of the fourth support portion 204 close to the seat surface assembly 100. The slide groove 316 includes a first end close to the seat surface assembly 100 and a second end away from the seat surface assembly 100. The first locking assembly 312 includes a first slider 313, a first elastic pin 314 and a second elastic pin 315. The first elastic pin 314 and the second elastic pin 315 are relatively arranged on the fourth support portion 204. The first elastic pin 314 corresponds to the first end of the slide groove 316, and the second elastic pin 315 is arranged corresponding to the second end. The first slider 313 is arranged in the slide groove 316 of the fourth support portion 204. The seventh pivot joint 312 is provided in the seventh pivot joint 312. The rod body 318 of the seventh pivot portion 311 is passed through the first slider 313 and can reciprocate with the first slider 313 in the sliding groove 316. The first slider 313 is provided with a pin hole 317. When the pin hole 317 is opposite to the first elastic pin 314 or the second elastic pin 315, the first elastic pin 314 or the second elastic pin 315 is embedded in the pin hole 317 due to the force of the internal spring, thereby limiting the first slider 313 and further limiting the movement of the seventh pivot portion 311, thereby achieving the overall structural stability of the multi-functional fitness device in the expanded state and the stored mode, preventing its overall structure from being changed by external forces, and improving the exercise effect during exercise and the safety in the stored mode.

[0069] Preferably, the first spring pin 314 and the second spring pin 315 are arranged on the outer wall 208 of the fourth support portion 204, or on the inner wall 207 of the fourth support portion 204. The purpose of this arrangement is, on the one hand, to facilitate the user to operate the spring pins on one side of the chair, and on the other hand, to better fold the first inner connecting arm 303, the first outer connecting arm 304, the second inner connecting arm 309, the second outer connecting arm 310 and the chair leg 200 to the same plane, making the overall structure more compact and integrated.

[0070] Further, such as Figure 4As shown, in the lateral position relationship, the position close to the midpoint of the seat seat assembly is defined as the first side, and the position away from the midpoint of the seat seat assembly is defined as the second side. The first outer connecting arm 304 and the first inner connecting arm 303 are respectively arranged on both sides of the third support portion 203, and the first outer connecting arm 304 is arranged between the first support portion 201 and the third support portion 203. The first inner connecting arm 303 is arranged close to the first side, and the first support portion 201 is arranged close to the second side. As a result, in the lateral direction, the first support portion 201, the first outer connecting arm 304, the third support portion 203 and the first inner connecting arm 303 are arranged sequentially from the second side to the first side, and there is no intersection between the structures. Therefore, when the chair leg 200 is folded and moved toward the position of the seat seat assembly 100, it will not be unable to be completely folded due to the intersection between the connecting arms and the supporting portions in the first link structure 301. Therefore, the first support portion 201 and the third support portion 203 overlap in the same direction in the storage mode, which improves the aesthetics and facilitates miniaturization.

[0071] like Figure 9 and Figure 10 As shown, the chair back assembly 500 includes a resistance unit 501, a third rod portion 502, a rotation unit 503 and a first back rod 504. The third rod portion 502 is arranged relative to the fourth frame portion 106 of the seat frame 101 and is fixedly connected to the fourth frame portion 106 through the extension portion 107 on the seat frame 101. The end of the first back rod 504 close to the seat surface assembly 100 is rotatably connected to the third rod portion 502 through the rotation unit 503, and the relative movement between the third rod portion 502 and the first back rod 504 can be limited by adjusting the rotation unit 503. The first back rod 504 is far away from the seat surface assembly 100. The resistance unit 501 is connected to one end of the chair seat assembly 100, and the first back rod 504 is set to a retractable structure and can be rotated with the third rod 502 as the axis, so that the resistance unit 501 can adjust the distance between itself and the chair seat assembly 100 as the first back rod 504 is retracted, and can be adjusted to different exercise angles and folding angles as the first back rod 504 is rotated, that is, the height and angle of the resistance unit 501 can be adjusted to meet the adjustment needs of users of different heights and body lengths. At the same time, the overall height of the chair back assembly 500 can be reduced, achieving a miniaturized folding and storage effect.

[0072] It can be understood that in order to enhance the stability of the chair back assembly 500, the first back rod 504 and the second back rod 505 are relatively arranged in the present invention. The first back rod 504 and the second back rod 505 have the same structure and are symmetrically arranged. The following is mainly explained in detail taking the specific structure of the first back rod 504 as an example.

[0073] The first back bar 504 includes a fourth spring pin 507, a first base portion 508, and a first extension portion 509. One end of the first base portion 508 and one end of the first extension portion 509 are interlocked. The fourth spring pin 507 is located at an end of the first base portion 508 near the first extension portion 509. The first extension portion 509 is provided with a plurality of spaced-apart retaining holes. The fourth spring pin 507 can be inserted through the first base portion 508 into different retaining holes of the first extension portion 509 to achieve telescopic adjustment and positional fixation of the first back bar 504. The second back bar 505 is disposed opposite the first back bar 504 at both ends of the third bar portion 502. Accordingly, the second back bar 505 includes a second base portion 510 and a second extension portion 511 that are interlocked. A top bar 506 is disposed above the first extension portion 509 and the second extension portion 511. The top bar 506 not only provides a stable connection between the first back bar 504 and the second back bar 505, but also supports the back cushion and other structures of the seat seat assembly 100.

[0074] The resistance unit 501 includes a symmetrically arranged first resistance component 512 and a second resistance component. The following mainly uses the structure of the first resistance component 512 as an example for explanation. The first resistance component 512 includes a first fixed ring 513, a first steering wheel 514, a first changing wheel 515 and a first rope 516. The first fixed ring 513 and the first changing wheel 515 are arranged on the side close to the second extension part 511, and the first steering wheel 514 is arranged on the side close to the first extension part 509. One end of the first rope 516 is connected to the first fixed ring 513, and the other end of the first rope 516 passes through the first steering wheel 514 and then passes through the first changing wheel 515 to pass through the chair back component 500 and is connected to the handle 517, so that the first rope 516 is folded horizontally. The first rope 516 is an elastic pull rope.

[0075] The purpose of setting up the above structure is that during resistance training, a sufficient pull rope length is required to allow the human body to complete the entire range of motion, thereby effectively exercising the target muscle groups and adapting to these diverse training needs. This ensures that the first rope 516 has sufficient length and a high stretching stroke, and by centrally setting the stretching stroke of the first rope 516 on the upper side of the chair back assembly 500 in a transverse direction, it only occupies a small part of the vertical space of the chair back assembly 500. Combined with the telescopic structure of the first back rod 504 and the second back rod 505, the height adjustment of the resistance unit 501 on the chair back assembly 500 can be achieved, which can be suitable for users of different body shapes to exercise or form different exercise modes. In addition, the resistance unit 501 is adjusted to the lowest height and then folded and stored, which can further realize the miniaturization of the fitness chair.

[0076] Specifically, the first steering wheel 514 and the first changing wheel 515 are both fixed pulley structures. The first steering wheel 514 is arranged on the side of the first extension part 509 facing the second extension part 511 to reduce unnecessary angle adjustment of the first rope 516 when it reaches the first extension part 509 on the opposite side from the first fixed ring 513, complete the direction reversal of the first rope 516 as soon as possible, and improve the working efficiency of the resistance system. The surface of the second extension part 511 facing the rear side of the chair back assembly 500 is defined as the rear side surface 518, and the first changing wheel 515 is arranged on the rear side surface 518 of the second extension part 511, so that the resistance system is concentrated on the rear side of the chair back assembly 500, and then when the chair back assembly 500 is folded forward, it is fitted with the seat surface assembly 100, thereby improving the folding and storage effect.

[0077] Furthermore, the pulley axis of the first deflection wheel 515 is parallel to the axis of the first back rod 504, so that when the chair back assembly 500 is rotated backward or downward to perform sports such as flying birds and rowing, the direction of the force exerted by the human body on the first rope 516 tends to be perpendicular to the direction of the first back rod 504, which is conducive to fixing the first rope 516 on the first deflection wheel 515 and preventing the first rope 516 from slipping out of the first deflection wheel 515 in the vertical direction. Furthermore, the pulley axis of the first steering wheel 514 is perpendicular to the axis of the first deflection wheel 515. The pulley axial direction and the vertical arrangement layout reduce the force of the first rope 516 from escaping from the first steering wheel 514 or the first changing wheel 515 when the first rope 516 is stretched at different angles. When the first rope 516 changes direction, it is kept in the pulley groove of the first steering wheel 514 and the first changing wheel 515 as much as possible, avoiding the first rope 516 from escaping from the first steering wheel 514 or the first changing wheel 515 and causing harm to the human body, thereby improving the stability of the resistance unit 501 and the safety of the multi-functional fitness chair.

[0078] Furthermore, the first fixing ring 513 is arranged at one end of the top rod 506 close to the second extension part 511, so that the first fixing ring 513 corresponds to the pulley groove of the first steering wheel 514, so that the first rope 516 can quickly complete the steering at the first steering wheel 514 position, reduce the deflection of the first rope 516 between the first fixing ring 513 and the first steering wheel 514, and improve the stability of the resistance system. Of course, the first fixing ring 513 can also be arranged at one end of the second extension part 511 close to the top rod 506. Those skilled in the art can make a choice according to actual conditions, as long as the first fixing ring 513 can be basically made to correspond to the pulley groove of the first steering wheel 514.

[0079] It should be noted that the first fixing ring 513, the first steering wheel 514, the first direction-changing wheel 515, the first rope 516 in the first resistance assembly 512, and the corresponding structures in the second resistance assembly can be set on the first back rod 504 and the second back rod 505, or can be set on the first back rod 504 and the second back rod 505. Figure 14and Figure 15 As shown, it is set on the frame structure 519, and then the frame structure 519 is connected to the adjustable rod body 520. Those skilled in the art can make a choice according to actual needs.

[0080] It can be understood that two identical rotating units 503 are provided in the present invention, and the two are symmetrically arranged at both ends of the third rod portion 502 to increase the stability after the third rod portion 502 and the first back rod 504 are fixed. Those skilled in the art can also provide only one group according to actual needs, as long as the fixing effect between the chair back assembly 500 and the seat frame bracket 101 can be achieved. The following is only explained by taking the rotating unit 503 on one side of the first back rod 504 as an example.

[0081] The rotating unit 503 includes a chuck assembly and an adjustment assembly that are interconnected. The two sides of the chuck assembly are respectively connected to the first back rod 504 and the third rod portion 502. Rotating the adjustment assembly can drive the chuck assembly to engage or disengage, thereby achieving fixation and unlocking between the third rod portion 502 and the first back rod 504. After unlocking, the first back rod 504 can rotate with the third rod portion 502 as the axis.

[0082] Specifically, the chuck assembly of the rotating unit 503 includes a first chuck 521 and a second chuck 522 arranged opposite to each other. The first chuck 521 is fixed at one end of the third rod portion 502, and the second chuck 522 is fixed at one end of the first back rod 504. Engaging structures are arranged at intervals on the opposite surfaces of the first chuck 521 and the second chuck 522. The engaging structures in this embodiment are concave teeth and convex teeth, so that after the first chuck 521 and the second chuck 522 abut against each other, the concave teeth and the convex teeth engage with each other to form a locked state of the chuck assembly. The adjustment assembly of the rotating unit 503 includes a rotating shaft 523, a sleeve 524, an adjusting rod 525, a stop pin (not shown in the figure) and a gasket 526. The outer wall of the tubular sleeve 524 is fixedly connected to the first back rod 504, one end of the sleeve 524 is fixedly connected to the second chuck 522, and the other end is connected to the adjusting rod 525. A through hole is set in the middle of the first chuck 521 and the second chuck 522. One side of the tubular rotating shaft 523 passes through the through hole, and the outer wall of the rotating shaft 523 is fixedly connected to the first chuck 521. The other side of the rotating shaft 523 is passed through the sleeve 524. Therefore, when the first chuck 521 and the second chuck 522 are separated, the rotating shaft 523 can rotate relative to each other in the sleeve 524, so that the first back rod 504 can rotate with the third rod portion 502 as the axis.

[0083] The first and second chucks 522 are connected to each other by a screw thread, and the second chuck 522 is connected to the first chuck 521 by a screw thread, so that the second chuck 522 can move relative to the first chuck 521 and the second chuck 522 can move relative to the first chuck 521. When the second chuck 522 is separated, the second chuck 522 is separated from the first chuck 521 and the second chuck 522 is separated. The third rod 502 and the first back rod 504 are fixed and unlocked, so that the seat back assembly 500 can rotate relative to the seat frame 101. The two can form an angle of 0° to 270° in the lateral direction and can be locked at any angle. Figure 12 and Figure 13 As shown, on the one hand, the chair back assembly 500 and the chair seat assembly 100 can be opened to an angle of 180 degrees, forming a folding mode on the same plane, thereby improving the space utilization rate of the storage mode. On the other hand, by utilizing different opening and closing angles, in conjunction with the resistance unit 501 on the chair back assembly 500 and the tilted chair leg 200 structure, a variety of exercises can be performed, thereby improving the expandability and flexibility of the multifunctional fitness chair.

[0084] Furthermore, a through-hole 527 is provided at one end of the adjustment rod 525 that is inserted into the rotating shaft 523. A rod-shaped stop pin is inserted through the through-hole 527. The length of the stop pin is not less than the diameter of the rotating shaft 523. When the adjustment rod 525 moves away from the rotating shaft 523, the stop pin abuts against the rotating shaft 523 and prevents the adjustment rod 525 from moving further, preventing the adjustment rod 525 from completely dislodging from the rotating shaft 523 and improving user usability. In addition, a gasket 526 is provided between the sleeve 524 and the adjustment rod 525 to enhance the friction between them, thereby increasing the friction at the threaded connection between the adjustment rod 525 and the rotating shaft 523, and enhancing the stability of the rotating unit 503.

[0085] It is understandable that those skilled in the art can set the resistance unit 501 to a coil spring structure, or adjust the number and position of the pulley set according to actual needs, as long as the integration and miniaturization of the resistance unit 501 are achieved under the premise of meeting a sufficient elastic deformation distance. The sufficient elastic deformation distance refers to the displacement length of the hands or feet required for an average adult to complete a full stroke of flying birds, rowing and other sports.

[0086] The multifunctional fitness chair of the present invention has the following advantages:

[0087] 1. The multifunctional fitness chair is formed by combining a retractable stabilizer under the seat, foldable legs consisting of a four-link structure, and a rotatable backrest with an integrated resistance unit to form the overall structure of the chair. The multifunctional fitness chair can be switched to a variety of exercise modes or seat modes in the unfolded state. The exercise modes include Pilates, chest press, flyes, rowing, etc. The seat mode is a state where it can be used as a regular chair. The outer contour of the overall structure has no other redundant structures that affect the sitting posture except the seat, back and legs. In the storage mode, the back assembly, legs and stabilizer are folded toward the plane where the seat assembly is located, so that the above structures are in the same plane, reducing the floor space and making the multifunctional fitness chair compact and easy to store.

[0088] 2. The four-bar linkage structure with a specific length relationship can merge the four sides of the four-bar linkage structure into a straight line after the folding process. In combination with the fixed rod being arranged close to the outer side walls of the third and fourth support parts, and the first rod being arranged close to the inner side walls of the third and fourth support parts, the miniaturization effect and aesthetics of the storage mode are improved;

[0089] 3. A first locking assembly is provided on the chair legs to limit the folding assembly in the unfolded state and the storage mode, thereby ensuring the overall structural stability of the multifunctional fitness device in both the unfolded state and the storage mode, preventing the overall structure from being affected by external forces, and improving the exercise effect during exercise and the safety in the storage mode;

[0090] 4. After the pedal stabilizer is shortened, the second rod and the footrest are all located within the coverage of the lateral projection of the third support portion or the fourth support portion. Therefore, in the storage mode, the second rod, the footrest, the third support portion, and the fourth support portion are all in the same plane, without any protruding structure, and the storage is flat;

[0091] 5. The backrest assembly can be rotated relative to the seat assembly and can be locked at any angle. On the one hand, the backrest assembly and the seat assembly can be folded to the same plane, improving the space utilization rate of the storage mode. On the other hand, different opening and closing angles are used, combined with the resistance unit on the backrest assembly and the tilted leg structure to perform various exercises, thereby improving the expandability and flexibility of the multi-functional fitness chair.

[0092] The terms “above”, “below” and “within” mentioned above include the number itself; the terms “exceed” and “outside” do not include the number itself.

[0093] The present invention has been further described above with the aid of specific embodiments. However, it should be understood that the specific descriptions herein should not be construed as limiting the essence and scope of the present invention. Any modifications made to the above embodiments by a person of ordinary skill in the art after reading this specification fall within the scope of protection of the present invention. The various specific technical features described in the above specific embodiments may be combined in any suitable manner unless there is any contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0094] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

Claims

1. A multifunctional fitness chair, characterized in that: The utility model comprises a seat assembly, chair legs, a stabilizing pedal and a chair back assembly, wherein the stabilizing pedal is retractably arranged on the chair legs, a positioning assembly is arranged on the stabilizing pedal to limit the telescopic length of the stabilizing pedal, and the stabilizing pedal can be accommodated between the seat assembly and the chair legs, a folding assembly and a rotating unit are relatively arranged on the seat assembly, the chair back assembly is rotatably connected to one side of the seat assembly via the rotating unit, and the chair legs are rotatably connected to the other side of the seat assembly via the folding assembly, so that the chair legs, the stabilizing pedal and the chair back assembly can be folded toward the seat assembly.

2. The multifunctional fitness chair according to claim 1, characterized in that: The chair back assembly can rotate the third rod portion on the rotating unit, and the chair legs can rotate the third pivot portion and the seventh pivot portion on the folding assembly. The third rod portion has a first axis, and a second axis is formed between the third pivot portion and the seventh pivot portion. The first axis and the second axis are both arranged close to the plane where the seat surface assembly is located.

3. The multifunctional fitness chair according to claim 2, characterized in that: The seat surface assembly includes a fourth frame portion, and a first frame portion and a second frame portion arranged opposite to each other at both ends of the fourth frame portion, the second axis is located between the first frame portion and the second frame portion, and the seat back assembly includes an extension portion, the two ends of the extension portion are respectively connected to the fourth frame portion and the third rod portion, and the end of the extension portion connected to the third rod portion extends in the vertical direction in a direction away from the second axis, so that the first axis and the second axis are respectively located on the upper and lower sides of the plane where the seat surface assembly is located.

4. The multifunctional fitness chair according to claim 2, characterized in that: The second axis is located on a side of the chair seat assembly away from the chair back assembly, and the chair back assembly is configured as a telescopic structure to reduce the height of the multifunctional fitness chair after folding.

5. The multifunctional fitness chair according to claim 1, characterized in that: The pedal stabilizer comprises a first rod portion and a pedal portion which are arranged opposite to each other, and a second rod portion which connects the first rod portion and the pedal portion. The second rod portion is arranged as a telescopic structure.

6. The multifunctional fitness chair according to claim 5, characterized in that: The second rod portion includes a third elastic pin, and a third extension portion and a third base portion that are socketed with each other. A plurality of positioning holes are arranged at intervals on the third extension portion. The third elastic pin is arranged on the third base portion. The third elastic pin can be inserted into different positioning holes of the third extension portion to adjust and limit the relative position of the third extension portion and the third base portion.

7. The multifunctional fitness chair according to claim 6, characterized in that: The chair legs include a third support portion and a fourth support portion that are arranged opposite to each other, and the two ends of the first rod portion are respectively connected to the third support portion and the fourth support portion. The foot stabilizer also includes a fixed rod, and the two ends of the fixed rod are respectively connected to the third support portion and the fourth support portion, and the fixed rod is arranged between the chair seat assembly and the first rod portion. The footrest portion can rotate with the first rod portion as the axis so that the second rod portion can be connected to the fixed rod.

8. The multifunctional fitness chair according to claim 7, wherein: The fixing rod is arranged close to the outer side wall of the third support part and the fourth support part, and the first rod part is arranged close to the inner side wall of the third support part and the fourth support part, and an accommodating space is formed on the side of the fixing rod close to the inner side wall. A limiting groove is arranged on the fixing rod, and the opening of the limiting groove is arranged opposite to the second rod part. The length of the second rod part can be shortened to no more than the length of the third support part. The second rod part is fixed in the accommodating space so that when the second rod part is in a shortened state, the footrest part and the second rod part can all be arranged under the seat surface assembly, and the second rod part can be located in the same plane as the third support part.

9. The multifunctional fitness chair according to any one of claims 5 to 8, characterized in that: It also includes a support plate, and the chair legs also include a first support part and a second support part arranged opposite to each other, and the two ends of the support plate are detachably connected to the ends of the first support part and the second support part close to the ground; or, the two ends of the support plate are detachably connected to the ends of the third support part and the fourth support part close to the ground.

10. The multifunctional fitness chair according to claim 1, wherein: The folding assembly includes a first connecting rod structure, which includes a first frame portion, a first support portion, a third support portion, a first inner connecting arm and a first outer connecting arm. The first pivot portion and the second pivot portion are relatively arranged on the first frame portion, the first support portion and the third support portion are movably connected to the first pivot portion, one end of the first inner connecting arm is movably connected to the second pivot portion, a fourth pivot portion is arranged on the first support portion, one end of the first outer connecting arm is connected to the fourth pivot portion, a third pivot portion that can move back and forth is arranged on the third support portion, the other end of the first inner connecting arm and the other end of the first outer connecting arm are movably connected to the third pivot portion, the distance between the first pivot portion and the fourth pivot portion is equal to the distance between the third pivot portion and the second pivot portion; the distance between the first pivot portion and the second pivot portion is equal to the distance between the third pivot portion and the fourth pivot portion.

11. The multifunctional fitness chair according to claim 10, wherein: It also includes a first locking component and a slide groove, which are arranged on the third support part. The first locking component can fix the third pivot part to the first end or the second end of the slide groove to put the folding component in an unfolded state or a storage mode and limit it.

12. The multifunctional fitness chair according to claim 11, wherein: The first locking assembly includes a first slider, and a first elastic pin and a second elastic pin arranged opposite to each other on the third support portion. The first slider is arranged in a slide groove of the third support portion. The rod body of the third pivot portion is passed through the first slider and can reciprocate with the first slider in the third support portion. A pin hole is provided on the first slider. When the pin hole is opposite to the first elastic pin or the second elastic pin, the first elastic pin or the second elastic pin can be locked with the pin hole.

13. The multifunctional fitness chair according to claim 10, wherein: The first outer connecting arm and the first inner connecting arm are respectively arranged on both sides of the third supporting portion, and the first outer connecting arm is arranged between the first supporting portion and the third supporting portion.

14. The multifunctional fitness chair according to claim 1, wherein: The chair back assembly includes a resistance unit, a third rod, a rotating unit and a first back rod. The third rod is arranged close to the seat surface assembly, the rotating unit is arranged on the third rod, one end of the first back rod close to the seat surface assembly is connected to the third rod through the rotating unit, and one end of the first back rod away from the seat surface assembly is connected to the resistance unit. The first back rod is arranged to be a telescopic structure and can rotate with the third rod as the axis.

15. The multifunctional fitness chair according to claim 14, wherein: The first back rod includes a fourth elastic pin, and a first base part and a first extension part that are sleeved together. The fourth elastic pin is arranged on the first base part. A plurality of limiting holes are arranged at intervals on the first extension part. The fourth elastic pin can pass through the first base part and be arranged in different limiting holes of the first extension part.

16. The multifunctional fitness chair according to claim 15, wherein: It also includes a second back rod, which is relatively arranged at both ends of the third rod portion with the first back rod, the second back rod includes a second base portion and a second extension portion that are sleeved together, the resistance unit includes a first resistance assembly, the first resistance assembly includes a first fixed ring, a first steering wheel, a first changing wheel and a first rope, the first fixed ring and the first changing wheel are arranged on a side close to the second extension portion, the first steering wheel is arranged on a side close to the first extension portion, one end of the first rope is connected to the first fixed ring, and the other end of the first rope passes through the first steering wheel and then passes through the chair back assembly by the first changing wheel, so that the first rope is folded horizontally.

17. The multifunctional fitness chair according to claim 16, wherein: The first steering wheel is arranged on the side of the first extension portion facing the second extension portion, and the first changing wheel is arranged on the rear side surface of the second extension portion; and / or, the pulley axis of the first changing wheel is parallel to the axis of the second back rod, and the pulley axis of the first steering wheel is perpendicular to the pulley axis of the first changing wheel; and / or, the two ends of the top rod are respectively connected to the first extension portion and the second extension portion, and the first fixing ring is arranged at one end of the top rod close to the second extension portion, so that the first fixing ring corresponds to the pulley groove of the first steering wheel.

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