Physical exercise device for national fitness

Abstract

The invention discloses a physical exercise device for nationwide fitness, comprising: a deformable basic frame comprising columns and a folding stay bar assembly connected between the columns; the three-dimensional motion seat mechanism is movably connected with the stand column through a spherical hinge mechanism; the upper limb training system comprises a left upper limb swing arm and a right upper limb swing arm which are independently hinged to the upper portion of the stand column. The lower limb training system comprises a left lower limb pedal and a right lower limb pedal which are independently hinged to the bottom of the basic frame; the space transmission frame is of a multi-rod linkage structure, the first end of the space transmission frame is connected with rotating shafts of the left upper limb swing arm and the right upper limb swing arm, and the second end of the space transmission frame is connected with rotating shafts of the left lower limb pedal and the right lower limb pedal. The self-adaptive resistance module comprises a hydraulic damping cylinder and a piston rod, a cylinder body of the hydraulic damping cylinder is installed on the foundation frame, and the movable end of the piston rod is connected to the space transmission frame. According to the device, when a user performs push-pull or pedaling actions, the upper limbs and the lower limbs generate a synergistic movement effect, and the energy transmission efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of physical exercise technology, and in particular to a physical exercise device for mass fitness. Background Technology

[0002] The purpose of national fitness is to promote fitness for all, and while improving physical fitness, to provide diversified physical exercise to meet the exercise needs of people of different ages, genders and fitness levels.

[0003] Existing fitness equipment has the following limitations: 1) Separation of upper and lower limb training, lacking training for whole-body coordination; 2) Limited seat adjustment freedom, restricting core muscle participation; 3) Single resistance mode, unable to adaptively adjust; 4) Large space occupation, poor suitability for home use. Although some equipment attempts to achieve limb linkage through linkage mechanisms, problems such as stiff movement trajectories and excessive joint load exist. Existing improvement solutions mostly focus on adding independent training modules, leading to structural complexity and increased costs. Summary of the Invention

[0004] This invention discloses a physical exercise device for national fitness, which improves upon existing structures and shortcomings to provide a better practical value.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fitness device for mass fitness includes:

[0007] Deformable base frame, including columns and folding strut assemblies connecting them;

[0008] The three-dimensional motion seat mechanism is movably connected to the column via a ball joint mechanism;

[0009] The upper limb training system includes a left upper limb swing arm and a right upper limb swing arm that are independently hinged to the upper part of the column;

[0010] The lower limb training system includes a left lower limb pedal and a right lower limb pedal that are independently hinged to the bottom of the base frame;

[0011] The spatial transmission frame is a multi-bar linkage structure. Its first end is connected to the rotation shaft of the left upper limb swing arm and the right upper limb swing arm, and its second end is connected to the rotation shaft of the left lower limb pedal and the right lower limb pedal.

[0012] The adaptive resistance module includes a hydraulic damping cylinder and a piston rod. The cylinder body of the hydraulic damping cylinder is mounted on the base frame, and the movable end of the piston rod is connected to the spatial transmission frame.

[0013] In some embodiments, the space transmission frame includes:

[0014] The upper connecting ring is coaxially and fixedly connected to the rotation axis of the left upper limb swing arm and the right upper limb swing arm;

[0015] The lower connecting ring is coaxially and fixedly connected to the rotation shaft of the left lower limb pedal and the right lower limb pedal;

[0016] Multiple radial telescopic rods, each of which is hinged at both ends to the upper connecting ring and the lower connecting ring via universal joints.

[0017] In some embodiments, the radial telescopic rod includes a helical guided telescopic mechanism, comprising:

[0018] The outer tube and the inner rod disposed inside the outer tube, wherein the inner wall of the outer tube is provided with a continuous spiral groove, and the outer wall of the inner rod is connected with a guide pin, which slides within the spiral groove.

[0019] In some embodiments, the left upper limb swing arm and the right upper limb swing arm are asymmetrical structures; the left upper limb swing arm is a straight rod with a first handle at its end; the right upper limb swing arm is an L-shaped bent rod with its vertical section connected to the first end of the spatial transmission frame, its horizontal section forming an angle of 110°-130° with the vertical section, and a second handle at the end of the horizontal section.

[0020] In some embodiments, the ball joint mechanism includes:

[0021] A hemispherical base is installed on the column or connected to the top of the lifting column of the column;

[0022] A floating sphere is embedded in the bottom of the seat plate of the three-dimensional motion seat mechanism, and its spherical surface slides in conjunction with the inner wall of the hemispherical seat.

[0023] Three sets of constraint components are distributed at 120°. Each set includes a limiting groove on the hemispherical seat and a protruding post on the floating sphere. The protruding post is slidably disposed in the corresponding limiting groove.

[0024] In some embodiments, the folding strut assembly is an X-shaped cross-hinged structure, comprising:

[0025] The first and second links are cross-hinged;

[0026] An electromagnetic latch is provided on the first link or the second link;

[0027] Positioning holes are arrayed on the second connecting rod or the first connecting rod, corresponding to the electromagnetic pin;

[0028] A controller is used to drive the electromagnetic pin to insert into a selected positioning hole in the positioning holes set in the array, so as to lock the unfolding angle of the folding strut assembly.

[0029] In some embodiments, the lower limb training system further includes:

[0030] A foot posture correction mechanism is installed on the left lower limb pedal and the right lower limb pedal. The foot posture correction mechanism includes:

[0031] The calcaneal fixation cup is adjustable forward and backward via a slide rail located on the left or right lower limb pedal.

[0032] Metatarsal bands, with adjustable length, are connected to both sides of the left or right lower limb pedal to restrain the forefoot.

[0033] In some embodiments, a motion coupling disengagement mechanism is further included, the motion coupling disengagement mechanism comprising:

[0034] An electromagnetic clutch is disposed between the upper connecting ring and the rotation shaft of the left upper limb swing arm, and / or between the upper connecting ring and the rotation shaft of the right upper limb swing arm;

[0035] A manual switching lever is used to control the engagement or disengagement of the electromagnetic clutch.

[0036] In some embodiments, the column surface is provided with a touch screen; the first handle and the second handle surface are embedded with bioimpedance detection electrodes.

[0037] The physical exercise device for national fitness provided by this invention has the following advantages:

[0038] 1. The multi-bar linkage structure of the spatial transmission frame rigidly connects the motion axes of the upper limb swing arm and the lower limb pedal. Combined with the helical guide telescopic mechanism, it synchronously generates rotational displacement during radial extension and retraction, forming a composite three-dimensional motion trajectory. When the user performs pushing, pulling, or pedaling actions, the upper and lower limbs generate a coordinated motion effect, significantly improving energy transfer efficiency.

[0039] 2. The three sets of limiting grooves and protruding column constraint components of the ball joint mechanism enable the three-dimensional motion seat mechanism to achieve controllable swing freedom. When the user exerts torsional force, the seat adaptively deflects with the body's center of gravity, which not only enhances the participation of the core muscle groups but also avoids excessive load on the lumbar spine.

[0040] 3. The electromagnetic clutch of the motion coupling disengagement mechanism can instantly disconnect the mechanical connection between the upper connecting ring and the upper limb swing arm pivot. Seamless switching between full-body coordinated training and single-limb independent training modes can be achieved through manual switching lever operation.

[0041] 4. The folding support rod assembly of the deformable base frame is locked by the cooperation of electromagnetic pins and positioning holes, and the support angle can be quickly adjusted in conjunction with controller commands. When unfolded, it forms a stable training platform, and when folded, it greatly reduces the space occupied.

[0042] 5. The hydraulic damping cylinder of the adaptive resistance module dynamically adjusts the piston rod resistance based on real-time feedback from the bioimpedance detection electrodes. It automatically increases the damping force when the user increases their effort, ensuring optimized training intensity throughout the session. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a physical exercise device for national fitness proposed in this invention;

[0044] Figure 2 for Figure 1 A magnified view of a portion at point A shown;

[0045] Figure 3 This is a partial structural diagram of a fitness exercise device for mass fitness proposed in this invention.

[0046] Figure 4 This is a schematic diagram of the internal structure of the radial telescopic rod of a fitness exercise device for all people proposed in this invention.

[0047] Figure 5 This is a cross-sectional view of a hydraulic damping cylinder for a national fitness exercise device proposed in this invention;

[0048] Figure 6 This is a three-dimensional structural diagram of the foot posture correction mechanism of a fitness exercise device for all people proposed in this invention.

[0049] In the attached diagram: 101-Column; 102a-First connecting rod; 102b-Second connecting rod; 102e-Electromagnetic pin; 102f-Positioning hole; 102g-Controller; 201-Base plate; 202-Spherical hinge mechanism; 202a-Hemispherical seat; 202b-Floating sphere; 202c-Protruding column; 203-Lifting column; 301-Left upper limb swing arm; 302-Right upper limb swing arm; 303-First grip; 304-Second grip; 401-Left lower limb pedal; 4 02-Right lower limb pedal; 5-Spatial transmission frame; 501-Upper connecting ring; 502-Lower connecting ring; 503-Radial telescopic rod; 503a-Outer tube; 503b-Helical groove; 503c-Inner rod; 503d-Guide pin; 504-Universal joint; 6-Adaptive resistance module; 601-Hydraulic damping cylinder; 602-Piston rod; 701-Calonus fixation cup; 702-Metastatic band; 801-Electromagnetic clutch; 802-Manual switching lever; 9-Touchscreen. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0051] Reference Figures 1 to 6 In a preferred embodiment, a fitness exercise device for mass fitness includes:

[0052] The deformable base frame includes four columns 101 and X-shaped cross-folding strut assemblies connecting them;

[0053] The three-dimensional motion seat mechanism is movably connected to the column 101 via a ball joint mechanism 202; the base plate 201 of the three-dimensional motion seat mechanism is connected to the lifting column 203 via the ball joint mechanism 202, and the lifting column 203 is sleeved inside the column 101.

[0054] The upper limb training system includes a left upper limb swing arm 301 and a right upper limb swing arm 302, which are independently hinged to the upper part of the column 101.

[0055] The lower limb training system includes a left lower limb pedal 401 and a right lower limb pedal 402 that are independently hinged to the bottom of the base frame 1;

[0056] The spatial transmission frame 5 is a multi-bar linkage structure. Its first end is connected to the rotation shaft of the left upper limb swing arm 301 and the right upper limb swing arm 302, and its second end is connected to the rotation shaft of the left lower limb pedal 401 and the right lower limb pedal 402.

[0057] like Figure 5 As shown, the adaptive resistance module 6 includes a hydraulic damping cylinder 601 and a piston rod 602. The cylinder body of the hydraulic damping cylinder 601 is mounted on the base frame 1, and the movable end of the piston rod 602 is connected to the space transmission frame 5.

[0058] Participate together Figure 1 and Figure 2In some embodiments, the column 101 is a square steel pipe with anchor bolts at its four corners. The folding strut assembly has an X-shaped cross-hinged structure, including: a first connecting rod 102a and a second connecting rod 102b, cross-hinged; an electromagnetic pin 102e, disposed on the first connecting rod 102a or the second connecting rod 102b; positioning holes 102f, arrayed on the second connecting rod 102b or the first connecting rod 102a, corresponding to the electromagnetic pin 102e; and a controller 102g, used to drive the electromagnetic pin 102e to insert into a selected positioning hole of the arrayed positioning holes 102f to lock the unfolding angle of the folding strut assembly. The first connecting rod 102a is hinged to the side wall of the column 101 at both ends by stainless steel pins, and has a rectangular cavity stamped in the middle for housing the electromagnetic pin 102e, which serves as the drive mechanism for supporting the electromagnetic pin 102e; the C-shaped groove of the first connecting rod 102a guides the vertical movement trajectory of the electromagnetic pin 102e. The second connecting rod 102b is an I-beam cross-section long rod to resist bending deformation. Its top surface is flat and it intersects the first connecting rod 102a in an X-shape, located below the hinge point. An array of positioning holes 102f are laser-cut into its top surface. The electromagnetic pin 102e is a cylindrical electromagnetic actuator with a tapered guide head at its end. It is installed in the center of the rectangular cavity of the first connecting rod 102a via a threaded sleeve. Its wire passes through the internal channel of the first connecting rod 102a and connects to the controller 102g. The controller 102g is a flat, waterproof housing installed on the outer wall of the column 101, used to receive the angle selection signal from the touchscreen 9.

[0059] The bottom of the base frame 1 is also equipped with an anti-overturning support 104 and a level 105. The anti-overturning support 104 is a telescopic column with hydraulic damping; the level 105 is used to monitor the tilt angle of the base frame 1 in real time.

[0060] See also Figure 3 In some embodiments, the ball joint mechanism 202 includes:

[0061] The hemispherical base 202a is installed on the column 101 or connected to the top of the lifting column 203 of the column 101;

[0062] A floating sphere 202b is embedded in the bottom of the seat plate 201 of the three-dimensional motion seat mechanism, and its spherical surface slides in conjunction with the inner wall of the hemispherical seat 202a.

[0063] Three sets of constraint components are distributed at 120°. Each set includes a limiting groove on the hemispherical seat 202a and a protruding post 202c on the floating sphere 202b. The protruding post 202c is slidably disposed in the corresponding limiting groove.

[0064] Specifically, the base plate 201 is made of glass fiber reinforced nylon injection molding and is a waist-shaped curved support plate. It serves as the seat bearing surface and is located directly above the ball hinge mechanism 202. A floating ball 202b is embedded in the center of its bottom and is rigidly connected by countersunk bolts. Anti-slip pads are provided at its four corners and are fitted with the top flange of the lifting column 203 with a clearance.

[0065] The hemispherical seat 202a is a cast aluminum hemispherical shell with a polytetrafluoroethylene (PTFE) coating on its inner wall, and is mounted on the top flange of the lifting column 203. The floating sphere 202b is a finely ground stainless steel sphere with an annular groove formed on its waist to partially embed into the pressure ring at the bottom center of the base plate 201. The limiting groove is a 120° arc-shaped groove, distributed in three equal parts along the outer edge of the hemispherical seat 202a. The protruding column 202c is a stainless steel cylinder, vertically welded to the equatorial surface of the floating sphere 202b, and evenly distributed circumferentially at 120°, fitting with the groove with a clearance. The floating sphere 202b slides in multiple directions within the hemispherical seat 202a; the protruding column 202c moves along the limiting groove, limiting the seat tilt angle to ≤15°, and the PTFE coating reduces friction.

[0066] The lifting column 203 is a three-stage telescopic square tube structure, vertically installed on the front mounting surface of the column 101. It serves as the load-bearing integration for the ball joint mechanism 202 and the base plate 201. During operation, the column tilts to the left, pushing the base plate 201 and the floating ball 202b to deflect. The right protruding column 202c slides along the limiting groove to the end of the groove, while the left protruding column 202c moves in the opposite direction. The three sets of constraint components synchronously limit the deflection angle. When the protruding column 202c contacts the end of the groove, it locks, and the lifting column 203 maintains vertical support, with only the ball joint mechanism 202 providing controllable swing.

[0067] In some embodiments, the left upper limb swing arm 301 and the right upper limb swing arm 302 have an asymmetrical structure; the left upper limb swing arm 301 is a straight rod with an anodized surface and a first handle 303 at its end; its proximal end is connected to the mounting seat on the upper left side of the column 101 via a deep groove ball bearing. The right upper limb swing arm 302 is an L-shaped bent rod, with its vertical section connected to the first end of the spatial transmission frame 5, and its horizontal section forming an angle of 110°-130° with the vertical section, the horizontal section being L in length. h With the length L of the vertical segment v satisfy: The horizontal section ends with a second grip 304. The upper end of the vertical section of the right upper limb swing arm 302 is connected to the right mounting base of the column 101 via a tapered roller bearing, and the horizontal section ends with a keyway connected to the second grip 304. The first grip 303 has a silicone coating and an internal aluminum alloy spindle with an internal threaded hole at the end. The spindle is screwed into the end of the left upper limb swing arm 301, and its circumferential position is locked by a set screw. The second grip 304 has an asymmetrical design that conforms to the right-hand grip posture. It includes an arc-shaped inner side and an arc-shaped outer side, and its surface is laser-etched with an anti-slip grid pattern. It engages with the keyway of the horizontal section of the right upper limb swing arm 302 via a flat key, and is axially limited by a retaining spring.

[0068] When a user performs rowing training: the left hand grips the first handle 303 and pulls back, the left upper limb swing arm 301 rotates around the hinge point of the column, and the straight rod structure generates linear displacement output; the right hand grasps the arc surface of the second handle 304, the 125° bend of the right upper limb swing arm 302 guides the forearm to externally rotate, and the horizontal section transmits torque precisely through a key connection; the electrodes of both hands simultaneously collect electromyographic signals, and the data is transmitted to the touch screen 9 through embedded wires, and the hydraulic damping cylinder 601 adjusts the resistance in real time.

[0069] See also Figure 4 In some embodiments, the space transmission frame 5 includes:

[0070] The upper connecting ring 501 is coaxially fixedly connected to the rotation shaft of the left upper limb swing arm 301 and the right upper limb swing arm 302;

[0071] The lower connecting ring 502 is coaxially fixedly connected to the rotation shaft of the left lower limb pedal 401 and the right lower limb pedal 402; Where L is the total length of the telescopic rod, and D is the diameter of the upper connecting ring 501 and the lower connecting ring 502.

[0072] Multiple radial telescopic rods 503 are provided, with both ends of each rod hinged to an upper connecting ring 501 and a lower connecting ring 502 via universal joints 504. Specifically, in its free state, the spatial transmission frame has a dodecahedral skeleton structure, and the lengths of its radial telescopic rods 503 satisfy the following:

[0073] In some embodiments, the radial telescopic rod 503 includes a helical guided telescopic mechanism, which includes:

[0074] The outer tube 503a and the inner rod 503c disposed within the outer tube 503a are provided. The inner wall of the outer tube is provided with a continuous spiral groove 503b. The outer wall of the inner rod 503c is connected to a guide pin 503d, which slides within the spiral groove 503b. Specifically, the left lower limb pedal 401 is an aerospace-grade forged aluminum pedal body with a knurled anti-slip texture on the surface. It has reinforcing ribs on its back and an Ω-shaped reinforcing rib welded to its back at the front end. It also has a hinged ear seat at the front end. The ear seat is connected to the pivot support at the bottom of the base frame via a deep groove ball bearing. The pedal tilt angle ranges from -15° to +45°. The upper connecting ring 501 is annular, with six universal joint 504 mounting screw holes evenly distributed on its inner ring. It is coaxially sleeved at the pivot ends of the left upper limb swing arm 301 and the right upper limb swing arm 302, converting the rotational motion of the upper limb swing arm into planar traction on the radial telescopic rod 503. The lower connecting ring 502 is a ring-shaped component of the same specification as the upper connecting ring 501. It coaxially connects the rotating shafts of the left lower limb pedal 401 and the right lower limb pedal 402, and adopts a tapered sleeve locking structure to accommodate different shaft diameters. It is used to transmit the compound motion of the radial telescopic rod 503 to the rotating shaft of the lower limb pedal. There are 6 radial telescopic rods 503, which are evenly distributed circumferentially. The center line angle of the rod is 60°. The universal joints 504 at both ends of the radial telescopic rod 503 are respectively hinged to the mounting seats of the upper connecting ring 501 and the lower connecting ring 502. The outer tube 503a is a seamless steel tube, which is used to constrain the movement trajectory of the inner rod 503c. The inner rod 503c has a stepped shaft structure. The outer wall of its small diameter section is machined with an annular groove to install the guide pin 503d to convert axial displacement into rotational motion. The guide pin 503d is a cemented carbide cylindrical pin, which is press-fitted into the annular groove of the inner rod 503c to slide along the spiral groove 503b.

[0075] In some embodiments, the adaptive resistance module 6 further includes an angle encoder and an electronically controlled proportional valve. The angle encoder monitors the rotation angle of the upper connecting ring, and the electronically controlled proportional valve adjusts the flow rate of the hydraulic damping cylinder 601 based on the angle encoder data. The hydraulic damping cylinder 601 is a cylindrical double-acting cylinder with external heat dissipation fins and an integrated mounting lug at the bottom. The cylinder body of the hydraulic damping cylinder 601 is fixed to one side beam of the base frame 1 by hinge bolts. Its inlet and outlet ports are connected to hydraulic pipelines via quick-connect couplings. The cylinder surface is covered with a heat-insulating silicone sleeve. The hydraulic damping cylinder 601 converts the flow signal from the electronically controlled proportional valve into a linear damping force. The piston rod 602 is a stepped hard chrome alloy steel rod. The cylinder shaft is nested inside the hydraulic damping cylinder 601, and its end bearing connects to the force transmission node of the spatial transmission frame 5. The angle encoder is a hollow shaft absolute encoder with a sealed housing. It is coaxially sleeved at the root of the piston rod 602 and fixed to the end cover of the hydraulic damping cylinder 601 by flange bolts. The encoder shaft and the piston rod 602 are connected by a keyless bushing, which is used to detect the extension and retraction displacement and speed of the piston rod 602 in real time. The electronically controlled proportional valve is a two-position three-way proportional valve, which is integrated into the side of the cylinder body of the hydraulic damping cylinder 601. The valve body oil circuit is directly connected to the rodless chamber of the hydraulic damping cylinder 601, and it continuously adjusts the valve core opening according to the control signal. When the spatial transmission frame 5 moves: the radial telescopic rod 503 displaces and pulls the piston rod 602 to extend; the hydraulic oil is pressurized and flows through the electronically controlled proportional valve, generating resistance; the angle encoder monitors the speed of the piston rod 602 in real time; the touch screen 9 increases the opening of the proportional valve according to the electromyographic signal; the hydraulic oil flow decreases, and the resistance of the piston rod 602 increases. The oil in the cylinder is converted into heat energy through the proportional valve throttling port, and the heat dissipation fins diffuse the heat to the air medium.

[0076] See also Figure 6 In some embodiments, the lower limb training system further includes:

[0077] A foot posture correction mechanism is installed on the left lower limb pedal 401 and the right lower limb pedal 402. The foot posture correction mechanism includes:

[0078] The calcaneal fixation cup 701 is adjustable forward and backward via a slide rail located on the left lower limb pedal 401 or the right lower limb pedal 402.

[0079] The metatarsal band 702 is connected to both sides of the left lower limb pedal 401 or the right lower limb pedal 402 in an adjustable length to restrain the forefoot.

[0080] Specifically, the slide rail is centrally located along the length of the left lower limb pedal 401 and the right lower limb pedal 402, providing axial adjustment travel. The calcaneal fixation cup 701 is injection molded from PP, with a concave curved surface matching the anatomical shape of the calcaneus. It has a high guard edge at the rear to prevent heel slippage, and a T-shaped slider is integrated at the bottom. The calcaneal fixation cup 701 is located on the center line of the rear area of ​​the left lower limb pedal 401 and the right lower limb pedal 402. The T-shaped slider is embedded in the T-groove of the pedal slide rail and fixed in position by a knob locking mechanism, which is used to limit lateral displacement of the calcaneus. The metatarsal band 702 has a double-layer composite structure, with an inner layer of memory foam and an outer layer of nylon webbing. Its end has a self-locking ratchet adjustment buckle. The metatarsal band 702 is located on both sides of the forefoot area of ​​the left lower limb pedal 401 and the right lower limb pedal 402. The memory foam is used to disperse local pressure, the nylon webbing is used to provide three-dimensional constraint to prevent forefoot rotation, and the ratchet adjustment buckle is used to enable quick one-handed adjustment.

[0081] In some embodiments, a motion coupling disengagement mechanism is further included, the motion coupling disengagement mechanism comprising:

[0082] An electromagnetic clutch 801 is located between the upper connecting ring 501 and the rotation shaft of the left upper limb swing arm 301, and / or between the upper connecting ring 501 and the rotation shaft of the right upper limb swing arm 302.

[0083] The manual switching lever 802 is used to control the engagement or disengagement of the electromagnetic clutch 801.

[0084] In some embodiments, the surface of the column 101 is provided with a touch screen 9; the surfaces of the first handle 303 and the second handle 304 are embedded with bioimpedance detection electrodes.

[0085] The electromagnetic clutch 801 is an axial jaw clutch, comprising an excitation coil (copper wire winding) and a double-sided toothed friction disc. Its stator housing is fixed to the end face of the upper connecting ring 501 by flange bolts. The rotor toothed disc and the swing arm shaft are splined, and wires pass through a hollow shaft to connect to the control module. When energized, the toothed disc engages and transmits torque; when de-energized, a return spring pushes the toothed disc away. The manual switching lever 802 is an ergonomic lever with an anti-slip rubber coating at the end and a miniature limit switch integrated at its base. It is located in the operating area on the right side of the column 101, at shoulder height, with the lever axis at a 30° angle to the horizontal plane. Pushing the manual switching lever 802 forward triggers the limit switch, sending an engagement command to the electromagnetic clutch 801; pulling the manual switching lever 802 backward cuts off the circuit, and the electromagnetic clutch 801 quickly disengages.

[0086] The working principle is as follows:

[0087] Mode selection stage: Operate the touch screen 9 to select the training mode: 1. Full body coordination mode: Keep the electromagnetic clutch 801 engaged, so that the upper connecting ring 501 is rigidly connected to the shaft of the left upper limb swing arm 301 and the right upper limb swing arm 302; 2. Independent training mode: Move the manual switching lever 802 to disengage the electromagnetic clutch 801 and release the linkage between the single upper limb swing arm and the spatial transmission frame 5.

[0088] Basic adjustment stage: The controller 102g drives the electromagnetic pin 102e of the folding strut assembly to disengage from the positioning hole 102f, and relocks after adjusting the unfolding angle of the frame; the lifting column 203 drives the ball joint mechanism 202 to rise and fall; the calcaneal fixation cup 701 of the foot posture correction mechanism slides and is positioned along the slide rail, and the metatarsal band 702 tightens and fixes the foot.

[0089] Motion Transmission Phase: Collaborative Mode Workflow: a. The user grips the first handle 303 and the second handle 304 to drive the upper limb swing arm, while simultaneously applying force by pressing the left lower limb pedal 401 and the right lower limb pedal 402; b. The upper limb swing arm pivot drives the upper connecting ring 501 to rotate; c. The radial telescopic rod 503 pulls the lower connecting ring 502 to rotate synchronously through the universal joint 504; d. The lower limb pedal pivot is driven by the lower connecting ring 502 to generate a linkage operation; e. The piston rod 602 of the hydraulic damping cylinder 601 generates adaptive resistance as it moves with the spatial transmission frame 5. Independent Mode Workflow: a. After the electromagnetic clutch 801 disengages, the selected upper limb swing arm is released from the constraint of the upper connecting ring 501; b. The upper limb swing arm on this side can move freely without driving the spatial transmission frame 5; c. The remaining limbs that are not separated are still linked through the radial telescopic rod 503.

[0090] Dynamic adaptation phase: Bioimpedance detection electrodes embedded in the first grip 303 and the second grip 304 monitor the user's electromyography signals in real time; the touch screen 9 processes the data and controls the hydraulic damping cylinder 601 to adjust the oil circuit pressure; when an increase in force is detected, the resistance of the piston rod 602 increases linearly to form a training load.

[0091] Any content not described in detail in this specification is prior art known to those skilled in the art.

[0092] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Substitutions may include replacements of some structures, devices, or method steps, or may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A physical exercise device for mass fitness, characterized in that, include: Deformable base frame, including columns (101) and folding strut assemblies connecting them; The three-dimensional motion seat mechanism is movably connected to the column (101) via a ball joint mechanism (202); The upper limb training system includes a left upper limb swing arm (301) and a right upper limb swing arm (302) independently hinged to the upper part of the column (101); The lower limb training system includes a left lower limb pedal (401) and a right lower limb pedal (402) independently hinged to the bottom of the base frame (1); The spatial transmission frame (5) is a multi-bar linkage structure. Its first end is connected to the rotation shaft of the left upper limb swing arm (301) and the right upper limb swing arm (302), and its second end is connected to the rotation shaft of the left lower limb pedal (401) and the right lower limb pedal (402). The adaptive resistance module (6) includes a hydraulic damping cylinder (601) and a piston rod (602). The cylinder body of the hydraulic damping cylinder (601) is mounted on the base frame (1), and the movable end of the piston rod (602) is connected to the space transmission frame (5).

2. The fitness equipment for mass fitness according to claim 1, characterized in that, The space transmission frame (5) includes: The upper connecting ring (501) is coaxially fixedly connected to the rotation axis of the left upper limb swing arm (301) and the right upper limb swing arm (302); The lower connecting ring (502) is coaxially fixedly connected to the rotation shaft of the left lower limb pedal (401) and the right lower limb pedal (402); Multiple radial telescopic rods (503), each of which is hinged at both ends to the upper connecting ring (501) and the lower connecting ring (502) via universal joints (504).

3. The fitness equipment for mass fitness according to claim 2, characterized in that, The radial telescopic rod (503) includes a helical guided telescopic mechanism, which comprises: The outer tube (503a) and the inner rod (503c) disposed inside the outer tube (503a) are provided with a continuous spiral groove (503b) on the inner wall of the outer tube, and a guide pin (503d) is connected to the outer wall of the inner rod (503c), and the guide pin (503d) slides in the spiral groove (503b).

4. The fitness equipment for mass fitness according to claim 1, characterized in that, The left upper limb swing arm (301) and the right upper limb swing arm (302) are asymmetrical structures; the left upper limb swing arm (301) is a straight rod with a first handle (303) at its end; the right upper limb swing arm (302) is an L-shaped bent rod with its vertical section connected to the first end of the spatial transmission frame (5), its horizontal section forming an angle of 110°-130° with the vertical section, and a second handle (304) at the end of the horizontal section.

5. The fitness equipment for mass fitness according to claim 1, characterized in that, The ball joint mechanism (202) includes: A hemispherical base (202a) is installed on the column (101) or connected to the top of the lifting column (203) of the column (101); A floating sphere (202b) is embedded in the bottom of the seat plate (201) of the three-dimensional motion seat mechanism, and its spherical surface slides in cooperation with the inner wall of the hemispherical seat (202a); Three sets of constraint components are distributed at 120°. Each set includes a limiting groove on the hemispherical seat (202a) and a protruding post (202c) on the floating sphere (202b). The protruding post (202c) is slidably disposed in the corresponding limiting groove.

6. The fitness equipment for mass fitness according to claim 1, characterized in that, The folding strut assembly is an X-shaped cross-hinged structure, which includes: The first link (102a) and the second link (102b) are cross-hinged; An electromagnetic pin (102e) is provided on the first connecting rod (102a) or the second connecting rod (102b); Positioning holes (102f) are arrayed on the second connecting rod (102b) or the first connecting rod (102a) and correspond to the electromagnetic pin (102e); A controller (102g) is used to drive the electromagnetic pin (102e) to insert into a selected positioning hole in the positioning hole (102f) arranged in the array to lock the unfolding angle of the folding strut assembly.

7. The fitness equipment for mass fitness according to claim 1, characterized in that, The lower limb training system also includes: A foot posture correction mechanism is installed on the left lower limb pedal (401) and the right lower limb pedal (402). The foot posture correction mechanism includes: The calcaneal fixation cup (701) is adjustable back and forth via a slide rail provided on the left lower limb pedal (401) or the right lower limb pedal (402); Metatarsal bands (702), which are adjustable in length and connected to both sides of the left lower limb pedal (401) or the right lower limb pedal (402), are used to restrain the forefoot.

8. The fitness equipment for mass fitness according to claim 1, characterized in that, It also includes a motion coupling disengagement mechanism, which comprises: An electromagnetic clutch (801) is disposed between the upper connecting ring (501) and the rotation shaft of the left upper limb swing arm (301), and / or between the upper connecting ring (501) and the rotation shaft of the right upper limb swing arm (302); A manual switching lever (802) is used to control the engagement or disengagement of the electromagnetic clutch (801).

9. The fitness equipment for mass fitness according to claim 4, characterized in that, The surface of the column (101) is provided with a touch screen (9); the surfaces of the first handle (303) and the second handle (304) are embedded with bioimpedance detection electrodes.

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