Pedal linkage mechanism, body builder and deep squat motion body building structure linkage method

Abstract

The invention discloses a pedal linkage mechanism, a body builder and a deep squat motion body building structure linkage method, and relates to the field of body building equipment.The technical scheme is that a stress structure comprises a first rotating connecting part capable of being rotationally connected with an external supporting structure, and a first force application connecting part and a first linkage connecting part are arranged on the two sides of the stress structure respectively; the pedal unit comprises a pedal plate; the guide unit is linked with the pedal plate; and the first linkage structure is arranged between the stress structure and the pedal plate. When the stress structure rotates with the first rotary connecting part as the axis, the first linkage structure drives the pedal to move within the limiting range of the guide unit. The device has the beneficial effects that the squatting action and the pedal plate are linked, so that shanks and feet at ankle joints are always in an approximately vertical range during training, the injury probability of the ankle joints is reduced, meanwhile, the maximum squatting can be completed, the training resistance is distributed to a target hip muscle group as much as possible, and the training efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fitness equipment, in particular to a foot linkage mechanism, a fitness machine and a deep squat exercise fitness structure linkage method. BACKGROUND

[0002] With the continuous enhancement of national fitness consciousness, deep squat training has become one of the core training methods for fitness groups to improve lower limb strength and core stability due to its efficient exercise effect on lower limb muscle groups (especially hip muscles). In order to further optimize the pertinence and safety of deep squat training, various special deep squat fitness equipment has emerged, among which the traditional pendulum deep squat equipment is widely used in home fitness and commercial fitness due to its ability to provide stable training support for users through a pendulum movement track and effectively assist in completing deep squat movements.

[0003] The design core of the traditional pendulum deep squat equipment is to guide the user's lower limbs to move along a fixed arc track through a pendulum structure to exercise target muscle groups such as hips and thighs. However, in the long-term practical application process, the inherent structural defects of this type of equipment have gradually emerged, seriously affecting the safety, sufficiency and efficiency of training, and the specific problems are as follows: First, the risk of ankle injury is high. The movement track of the traditional pendulum deep squat equipment is fixed, and at the end of the deep squat movement (i.e. when squatting to the lowest position), the angle between the user's foot and lower leg at the ankle joint is too small due to the limitation of the pendulum arc track, and the ankle joint is forced to be in a state of excessive flexion. This unnatural joint posture can cause additional compression and traction on the ankle ligaments and tendons, and long-term repeated training can easily lead to ankle strain, pain, and even ligament injuries and other sports injuries, posing a significant risk to the safety of users' training.

[0004] Second, it cannot complete maximum squatting. Due to the above-mentioned excessive flexion of the ankle joint, users cannot complete the maximum amplitude squatting movement according to the natural movement rules of the human body when using the traditional pendulum deep squat equipment. In the natural deep squat state, the human body needs to achieve full squatting through the coordinated flexion and extension of the ankle joint, knee joint and hip joint, but the fixed track of the traditional pendulum deep squat equipment blocks this coordinated movement process, resulting in the forced compression of the squatting amplitude and the inability to achieve the "full-amplitude squatting" standard required for training, thereby affecting the stretching and contraction effect of the muscles.

[0005] Finally, training efficiency decreases. One of the core training goals of traditional pendulum squat machines is to enhance the gluteal muscle group through the proper distribution of resistance. However, because the maximum squat depth cannot be achieved, the gluteal muscles cannot fully extend and contract, making it difficult to effectively transfer resistance to the target gluteal muscle group. Instead, the resistance is distributed more to joints such as the knee and ankle. This not only results in insufficient stimulation of the gluteal muscles and a significant reduction in training effectiveness, but also causes an "ineffective distribution" of resistance, requiring users to expend more energy without achieving the expected training goals, thus reducing the efficiency of squat training. Summary of the Invention

[0006] To address one of the shortcomings of existing technologies, this invention provides a foot pedal linkage mechanism to solve the problem of lower limb coordination during squatting movements.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a foot pedal linkage mechanism, comprising: The load-bearing structure includes a first rotating connection part that can be rotatably connected to an external support structure. A first force-applying connection part and a first linkage connection part are respectively provided on both sides of the first rotating connection part. The first force-applying connection part can be linked with the external force-applying structure. Foot pedal unit, including foot pedals; The guide unit is linked to the foot pedal; The first linkage structure is disposed between the force-bearing structure and the foot pedal; when the force-bearing structure rotates about the first rotating connection part as an axis, the first linkage structure drives the foot pedal to move within the limit range of the guide unit.

[0008] Preferably, the first linkage structure is a linkage group, one end of the first linkage structure is connected to the first linkage connection part of the force-bearing structure, and the other end is linked to the foot pedal; When the first force-applying connecting part of the force-bearing structure moves away from the foot pedal, the first linkage structure can drive the foot pedal to move towards the front of the human body.

[0009] Preferably, the first linkage structure includes: The first linkage component has one end rotatably connected to the force-bearing structure via a first linkage connection part; The second linkage is rotatably connected to the other end of the first linkage, and the second linkage is rotatably connected to the external support structure. The third linkage has one end rotatably connected to the second linkage, and its rotatable connection point is located at a position away from the first linkage of the second linkage; the other end of the third linkage is linked to the foot pedal, which can drive the foot pedal to move.

[0010] Preferably, the first linkage structure further includes: A fourth linkage member is arranged between the end of the third linkage member and the foot pedal, one side of the fourth linkage member is rotatably connected with the end of the third linkage member, and the other side is fixedly connected with the foot pedal.

[0011] Preferably, the foot pedal unit further comprises: A pedal frame is fixedly connected with the foot pedal, and the pedal frame is arranged on the lower side of the foot pedal. A foot pedal connecting structure is arranged between the pedal frame and the guide unit.

[0012] Preferably, the guide unit comprises: At least one guide rod is arranged, and the guide rod is connected with the external structure. The pedal frame is slidably connected with the guide rod through the foot pedal connecting structure.

[0013] Preferably, the foot pedal connecting structure is a sliding sleeve slidably connected with the guide rod. The pedal frame is hingedly connected with the outer wall of the sliding sleeve of the foot pedal connecting structure.

[0014] Preferably, the foot pedal unit further comprises: A second linkage structure is arranged between the foot pedal and the external support structure; the side of the pedal frame close to the human body is hingedly connected with the foot pedal connecting structure; the side of the pedal frame away from the human body is hingedly connected with the second linkage structure, and the pedal frame is movably connected with the external support structure through the second linkage structure.

[0015] Preferably, the guide unit comprises: At least two guide members are arranged, and the two guide members are arranged in parallel below the pedal frame; the upper ends of the two guide members are hingedly connected with the pedal frame through the foot pedal connecting structure, and the lower ends are hingedly connected with the external support structure.

[0016] The fitness equipment uses the foot pedal linkage mechanism as described above.

[0017] Preferably, the foot pedal linkage mechanism comprises: A force applying unit is movably connected with the first force applying connecting part of the force receiving structure of the foot pedal linkage mechanism; the force applying unit is used to apply force when the user of the fitness equipment moves; A counterweight unit is movably connected with the force applying unit or the foot pedal linkage mechanism, and is used to provide load during the fitness movement; A support unit is used as the support structure of the fitness equipment.

[0018] Preferably, the force applying unit comprises: A force applying structure is connected with the first force applying connecting part of the force receiving structure; A cushion assembly is connected with the force applying structure, and the cushion assembly comprises at least two shoulder pads, and the flexible parts of the shoulder pads are arranged towards the lower side and correspond to the positions of the shoulders of the user.

[0019] Preferably, the counterweight unit comprises: a counterweight frame, and a force applying structure of the force applying unit is connected; a counterweight member, and the counterweight frame is detachably connected.

[0020] Preferably, the support unit comprises: a base frame, which can be placed on the ground, and the guide unit is arranged on the upper side of the base frame; a stand, which is connected with the base frame, and the first rotating connection part of the force receiving structure is rotatably connected with the upper part of the stand.

[0021] Preferably, it further comprises a limiting unit for limiting the displacement of the force applying unit, and the limiting unit comprises: a first limiting structure, which is fixedly connected with the support unit and arranged below the force applying unit, and the first limiting structure serves as a low-level position limiter of the force applying unit; a second limiting structure, which serves as a high-level position limiter of the force applying unit, and the second limiting structure comprises: a hook, which is rotatably connected with the force applying unit or the force receiving structure; a hooking member, which is fixedly connected with the stand of the support unit and located on one side of the force applying unit or the force receiving structure.

[0022] The deep squat exercise structure linkage method comprises the following steps: S1, configuring a force applying unit that can follow the movement of the upper body part of the user during deep squat exercise; S2, configuring a movable foot pedal as a foot stepping structure for the user during deep squat exercise; S3, configuring a foot pedal linkage mechanism between the force applying unit and the foot pedal; when the force applying unit moves, the foot pedal also moves correspondingly through the foot pedal linkage mechanism; the configuration method of the foot pedal linkage mechanism comprises: S301, configuring a force receiving structure, which adopts a swing arm type structure body, one end of which is linked with the force applying unit; S302, configuring a first linkage structure between the force receiving structure and the foot pedal, so that the foot pedal is displaced when the force receiving structure swings through the first linkage structure; S303, when the upper body of the user moves upward during deep squat exercise, the foot pedal moves toward the lower side of the user's body; S304, when the user performs deep squat exercise, the foot pedal moves toward the front of the user's body.

[0023] Compared with the prior art, the following beneficial effects are achieved: 1. Significantly reducing the risk of ankle joint injury and improving training safety In view of the defect that the traditional pendulum deep squat equipment causes excessive bending of the ankle joint at the end of the squat, which easily causes ligament strain or injury due to the fixed movement track, the foot pedal linkage mechanism of the present scheme is designed through the linkage of the force receiving structure and the foot pedal unit, and cooperates with the guiding unit to accurately limit the movement track of the foot pedal, so that the lower leg and foot at the ankle joint can always be kept in a reasonable angle range close to vertical during the whole deep squat action, especially when squatting to the lowest position at the end of the training, thereby avoiding the ankle joint being forced to be in an excessively tense and unnatural bending state. This design effectively reduces the additional compression and traction on the ankle ligament and tendon, cuts off the risk source of ankle injury caused by long-term repeated training from the structural level, and greatly improves the safety and user comfort of deep squat training.

[0024] 2. Breakthrough the squat amplitude limit, realize full-amplitude training, and ensure muscle exercise sufficiency In view of the problem that the traditional equipment blocks the cooperation of the ankle joint, the knee joint and the hip joint due to the fixed track, thereby causing the inability to complete the "full-amplitude squat", the present scheme is designed to rotate around the rotating connection part through the force receiving structure, and the foot pedal is driven to adaptively move within the limiting range of the guiding unit. This design breaks the rigid constraint of the traditional equipment on the movement track. The linkage mechanism can adapt to the physiological law of multi-joint cooperation during natural deep squatting, so that the user can complete the maximum squatting action according to the training needs, and ensure that the target muscle groups such as the hips and thighs are fully stretched and contracted during the training process, thereby completely solving the core problem that the muscle exercise is insufficient due to insufficient squat amplitude of the traditional equipment.

[0025] 3. Optimize the distribution of exercise resistance, greatly improve the training efficiency, and strengthen the exercise effect of target muscle groups In view of the defect that the traditional equipment causes resistance dispersion and insufficient stimulation of the target hip muscle group due to the limited squat amplitude, the present scheme realizes the precise linkage of the squatting action and the foot pedal, ensures full-amplitude squatting, and enables the exercise resistance to be more accurately transmitted to the target hip muscle group, thereby effectively avoiding the invalid dispersion of resistance to non-target joint parts such as the knee joint and the ankle joint. This design not only enables the hip muscles to obtain more sufficient stimulation during training, ensures that the training effect directly reaches the core target, but also reduces the additional physical consumption of the user due to invalid distribution of resistance, so that the user obtains better training effect with the same physical input, thereby significantly improving the efficiency and practicality of deep squat training. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the foot pedal linkage mechanism of the embodiment of the present application Figure 1 ; Figure 2 Structure diagram of the foot pedal linkage mechanism of the embodiment of the present application Figure 2 ; Figure 3 Structure diagram of the foot pedal linkage mechanism of the embodiment of the present applicationFigure 2 A partial enlarged view of the first embodiment of the application; Figure 4 A shaft side view of the working state of the fitness machine of the first embodiment of the application; Figure 5 A front view of the working state of the fitness machine of the first embodiment of the application; Figure 6 A shaft side view of the working state of the fitness machine of the first embodiment of the application; Figure 7 A front view of the working state of the fitness machine of the first embodiment of the application.

[0027] In the drawings: 1, force applying unit; 11, force applying structure; 12, cushion assembly; 121, shoulder pad; 122, waist pad; 123, head pad; 2, foot pedal linkage mechanism; 21, force receiving structure; 211, first rotary connecting part; 212, first force applying connecting part; 213, first linkage connecting part; 22, first linkage structure; 221, first linkage member; 222, second linkage member; 223, third linkage member; 224, fourth linkage member; 23, second linkage structure; 3, foot pedal unit; 31, foot pedal; 32, foot pedal connecting structure; 33, pedal frame; 4, guiding unit; 41, guiding rod; 5, counterweight unit; 51, counterweight frame; 52, counterweight member; 6, supporting unit; 61, base frame; 62, stand; 7, limiting unit; 71, first limiting structure; 72, second limiting structure. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0029] Please refer to Figures 1-3 The application provides the following technical solutions: The pedal linkage mechanism is applied to a deep squat fitness training device, and comprises a stress structure 21, a first linkage structure 22, a pedal unit 3 and a guide unit 4. The stress structure 21 is used to be connected or linked with an external structure, and moves along with the fitness action when a user exercises. The stress structure 21 comprises a first rotating connection part 211 rotatably connected with an external support structure, and a first force applying connection part 212 and a first linkage connection part 213 arranged on both sides of the first rotating connection part 211. The first force applying connection part 212 is linked with an external force applying structure, which is directly applied by the user's exercise action. The pedal unit 3 comprises a pedal plate 31 and a pedal bracket 33, and the pedal plate 31 is fixed on the pedal bracket 33. The pedal plate 31 of the present scheme adopts a plate body with a turned-up edge at the upper end edge, and the turned-up edge structure can limit the position of the user's toes or shoe tips. In order to limit the movement path of the pedal plate 31, the pedal plate 31 is linked with the guide unit 4, and the guide unit 4 is used as the movement guide and limiting structure of the pedal plate 31.

[0030] The first linkage structure 22 is arranged between the stress structure 21 and the pedal plate 31, and the pedal plate 31 is moved within the limiting range of the guide unit 4 by the linkage effect of the first linkage structure 22 when the stress structure 21 rotates around the first rotating connection part 211 as the shaft.

[0031] Figures 4 to 5 An implementation form of the pedal linkage mechanism applied to a fitness device is given, but it should be noted that the pedal linkage mechanism of the present scheme is not limited to this use. It can be used as a single deep squat fitness training device by changing the specific forms of the external support structure and the force applying structure, or it can be integrated into a comprehensive training construction device as a functional structure component.

[0032] For the convenience of description, the directions shown in Figure 5 and Figure 7 are taken as examples, Figure 5 the user is ready to perform a deep squat, but the body is still basically in a straight state, which is state one; Figure 7 the user has completed the deep squat, which is state two. The process of switching from state one to state two is the process of starting from Figure 5 , rotating the right end of the stress structure 21 clockwise downward until reaching Figure 7 .

[0033] During this process, as the force-bearing structure 21 rotates clockwise, its right end descends, i.e., the first force-applying connection 212 descends, and correspondingly, its left end, i.e., the first linkage connection 213, rises. The movement of the force-bearing structure 21 serves as the linkage power source for the foot pedal 31, and the traction of the foot pedal 31 is achieved through the first linkage structure 22. The first linkage structure 22 can adopt various different structural forms, and its specific structure will be further detailed later.

[0034] Based on the above implementation scheme, the load-bearing structure 21 adopts a swingable frame structure, which includes a right-angled trapezoidal frame structure. The first rotating connection part 211 is set on the two parallel frames of the right-angled trapezoid, and the first linkage connection part 213 is set on the outside of the right-angled frame of the support trapezoid. The base of the right-angled trapezoid, that is, the longer parallel side, extends outward away from the first linkage connection part 213, and the extended end is reserved with a connection structure, which is the first force-applying connection part 212. The specific connection form of the first force-applying connection part 212 can be various, as long as it is convenient to connect with the external force-applying structure. The specific structure is not limited. For example, this scheme adopts a flange-like connection form.

[0035] Based on the above implementation scheme, this scheme provides a specific structural form of the first linkage structure 22. The first linkage structure 22 adopts a linkage structure of a linkage group. One end of the first linkage structure 22 is connected to the first linkage connection part 213 of the force-bearing structure 21, and the other end is linked to the foot pedal 31. When the first force-applying connection part 212 of the force-bearing structure 21 moves away from the foot pedal 31, the first linkage structure 22 can drive the foot pedal 31 to move towards the front of the human body.

[0036] The first linkage structure 22 includes a first linkage member 221, a second linkage member 222, and a third linkage member 223. The first linkage member 221 is a rod, one end of which is rotatably connected to the force-bearing structure 21 via a first linkage connection part 213. The second linkage member 222 is a bent plate, one side of which is rotatably connected to the other end of the first linkage member 221, the middle of which is rotatably connected to the external support structure, and the other side of which is rotatably connected to the third linkage member 223. The third linkage member 223 adopts a bent rod structure. Figure 5 Taking the direction as an example, the rotational connection between the second linkage 222 and the external structure is located above the connection between its two ends and the first linkage 221 and the third linkage 223. The left end of the third linkage 223 is rotatably connected to the second linkage 222, and the right part of its rod is bent upward as a linkage structure with the foot pedal 31.

[0037] Through this structure, in the process of state one switching to state two, the first linkage 221 moves up as a whole, the second linkage 222 rotates clockwise, and the third linkage 223 is pulled to move towards the left, thereby realizing the pulling of the foot pedal 31.

[0038] On the basis of the above-mentioned embodiments, referring to Figure 3 , the first linkage structure 22 further comprises a fourth linkage 224, which is a "U"-shaped frame structure, and the open side thereof is fixedly connected with the pedal frame 33, and the closed side is rotationally connected with the left end of the third linkage 223.

[0039] In view of the flexibility of the cooperation between the human foot structure and the mechanical structure, the fourth linkage 224 rotationally connected with the third linkage 223 is introduced as an intermediate connecting structure of the pedal frame 33 in this embodiment, so that the movement of the pedal frame 33 is more flexible.

[0040] On the basis of the above-mentioned embodiments, the foot pedal unit 3 further comprises a foot pedal connecting structure 32, the lower side of the foot pedal 31 is fixedly connected with the pedal frame 33, and the pedal frame 33 is linked with the guide unit 4 through the foot pedal connecting structure 32.

[0041] The guide unit 4 can adopt various structural forms, and two forms are given in the following of this embodiment, and the foot pedal connecting structure 32 is adapted in different structural forms respectively corresponding to the two different guide units 4, which will be described in detail below.

[0042] On the basis of the above-mentioned embodiments, as a first implementation form of the guide unit 4, that is, the structure shown in the drawings of this embodiment, the guide unit 4 comprises an inclined guide frame, the right end of the guide frame, that is, the end closer to the user, is a low horizontal end, and the other end is a high horizontal end. Two guide rods 41 are fixedly arranged on the two sides of the guide frame, and the two guide rods 41 are parallel. The guide frame as a whole is fixedly connected with the external structure.

[0043] For this form of guide unit 4, the foot pedal connecting structure 32 is a sliding sleeve in sliding connection with the guide rod 41. Through this structure, when state one switches to state two, the foot pedal 31 can move obliquely upward along the guide rod 41 to the left side.

[0044] On the basis of the above-mentioned embodiments, on the basis of realizing the oblique sliding of the foot pedal 31 along the guide rod 41, different movement forms of the foot pedal 31 can be given according to different connection forms of the foot pedal connecting structure 32 and the pedal frame 33.

[0045] The movement form one of the foot pedal 31 is that the pedal frame 33 and the foot pedal connecting structure 32, that is, the sliding sleeve, are fixedly connected. In this form, the foot pedal 31 can only move along the rod body axis of the guide rod 41.

[0046] The second form of movement of the foot pedal 31 is that the lower part of the pedal frame 33 and the outer wall of the sliding sleeve of the foot pedal connecting structure 32 are hinged. Corresponding to this connection form, the scheme further comprises a second linkage structure 23, which is a bent rod arranged between the pedal frame 33 and the external support structure; the pedal frame 33 extends a connecting rod upward, the end of the connecting rod is hinged to the upper end of the second linkage structure 23, and the rod body of the second linkage structure 23 is hinged to the external support structure.

[0047] Through this structure, the pedal frame 33 can keep the inclination range of the foot pedal 31 substantially unchanged while moving obliquely along the guide rod 41, because it can rotate, thereby maintaining the angle of the user's foot and lower leg to maintain the correct deep squat foot posture without damaging the force.

[0048] On the basis of the above-mentioned embodiments, another implementation of the guide unit 4 is given below, which is different from the structure form of the aforementioned guide rod. In this scheme, a parallelogram four-bar linkage structure is used as the structure form of the guide unit 4, which comprises a guide base frame, the guide base frame is fixedly connected with the external structure, and the guide base frame is inclinedly arranged, and the end close to the user is a low-level segment. A guide piece is arranged at each end of the guide base frame, which can be a frame body or a rod body. The foot pedal connecting structure 32 of this form is a hinged structure arranged on the lower side of the pedal frame 33, the upper ends of the two guide pieces are hinged to the pedal frame 33 through the foot pedal connecting structure 32, and the lower ends are hinged to the guide base frame.

[0049] This connection structure can also keep the foot pedal 31 moving at a constant inclination angle, achieving the aforementioned movement effect.

[0050] On the basis of the above-mentioned embodiments, referring to Figures 4 to 7 Based on the aforementioned foot pedal linkage mechanism, the scheme provides a fitness machine applying the foot pedal linkage mechanism. In addition to the foot pedal linkage mechanism 2, the fitness machine further comprises a force applying unit 1, a counterweight unit 5 and a support unit 6. The force applying unit 1 can be linked with the first force applying connecting part 212 of the force receiving structure 21 of the foot pedal linkage mechanism 2; the force applying unit 1 is used to apply force when the user of the fitness machine moves. The counterweight unit 5 is linked with the force applying unit 1 or the foot pedal linkage mechanism 2, and is used to provide load during fitness exercise; the support unit 6 is used as the support structure of the fitness machine.

[0051] The fitness machine of the scheme can be used for pendulum deep squat fitness training.

[0052] On the basis of the above-mentioned embodiment, the force applying unit 1 comprises a force applying structure 11 and a cushion assembly 12. The force applying structure 11 is connected with the first force applying connecting part 212 of the force receiving structure 21. The cushion assembly 12 is connected with the force applying structure 11, and comprises at least two shoulder pads 121. The flexible parts of the shoulder pads 121 are arranged towards the lower side, corresponding to the positions of the two shoulders of the user.

[0053] The force applying structure 11 adopts a frame body with an "h" shape. One end of the frame body is connected with the first force applying connecting part 212, and the lower side of the end is provided with a shoulder pad 121 on each side. A handle is arranged on each outer side of the shoulder pad 121. The handle is fixedly connected with the frame body of the force applying structure 11. In addition, the cushion assembly 12 further comprises a head pad 123 and a waist pad 122 arranged corresponding to the head and waist of the human body. The waist pad 122 is a long strip cushion, and is used for the waist and back at the same time. The waist pad 122 is arranged in an inclined manner, and the inclination degree corresponds to the foot pedal 31.

[0054] A counterweight unit 5 is arranged at a position away from the first force applying connecting part 212 of the force applying structure 11. The counterweight unit 5 can adopt various forms. One form is given in the present embodiment.

[0055] The counterweight unit 5 comprises a counterweight frame 51 and a counterweight piece 52. The counterweight frame 51 is a rod body. One end of the rod body is connected with the force applying structure 11 of the force applying unit 1, and the other end is provided with a limiting block. The counterweight piece 52 is a barbell disc, and is inserted with the counterweight frame 51.

[0056] On the basis of the above-mentioned embodiment, the support unit 6 of the present embodiment can adopt various forms, as long as it can provide a supporting force. One form is given in the present embodiment. The support unit 6 comprises a base frame 61 and a vertical frame 62. The base frame 61 is a frame structure which can be placed on the ground. An opening is arranged on one side of the frame, so as to facilitate the user to enter. An inclined rod is arranged on the upper side of the base frame 61. The guide unit 4 is arranged on the inclined rod of the base frame 61. The vertical frame 62 is connected with the base frame 61. The vertical frame 62 comprises a front vertical frame and a side vertical frame. The front vertical frame is arranged in front of the user, and the side vertical frame is arranged on the right side of the user. The first rotating connecting part 211 of the force receiving structure 21 is rotatably connected with the upper part of the front vertical frame.

[0057] On the basis of the above-mentioned embodiment, in consideration of the safety of the fitness equipment, the present embodiment further comprises a limiting unit 7 which can limit the displacement of the force applying unit 1. The limiting unit 7 comprises a first limiting structure 71 and a second limiting structure 72. The first limiting structure 71 serves as a low level position limiting of the force applying unit 1. The second limiting structure 72 serves as a high level position limiting of the force applying unit 1.

[0058] The first limiting structure 71 is fixedly connected to the bottom frame 61 away from one end of the front stand, and the first limiting structure 71 is arranged below the force applying unit 1; the first limiting structure 71 comprises a telescopic rod body, the rod body is composed of an inner rod and an outer rod which are sleeved, and a locking pin is arranged at the connection position of the inner rod and the outer rod. A pad is arranged at the upper end of the rod body. When squatting, the first limiting structure 71 can support the end of the force applying structure 11 from below.

[0059] The second limiting structure 72 comprises a hook and a hanging piece. The hanging piece is a hanging rod, and a plurality of hanging rods are vertically arranged on the side stand. The hook and the force receiving structure 21 are rotationally connected, the hook is located on the outer side of the force receiving structure 21, and a rotating rod is rotationally connected to the inner side of the force receiving structure 21, and the rotating rod and the hook are fixedly connected. The user can rotate the rotating rod to rotate the hook, so as to realize the hanging or separation of the hook and the hanging piece.

[0060] On the basis of the above-mentioned embodiment, the present scheme further provides a deep squatting action fitness structure linkage method, comprising the steps of: S1, configuring a force applying unit 1 which can follow the movement of the upper part of the body of the user during deep squatting; S2, configuring a movable foot pedal 31 as a foot stepping structure for the user during deep squatting; S3, configuring a foot pedal linkage mechanism between the force applying unit 1 and the foot pedal 31; when the force applying unit 1 moves, the foot pedal 31 also moves correspondingly through the foot pedal linkage mechanism; the configuration method of the foot pedal linkage mechanism comprises: S301, configuring a force receiving structure 21, the force receiving structure 21 adopts a swing arm type structure, one end of which is linked with the force applying unit 1; S302, configuring a first linkage structure 22 between the force receiving structure 21 and the foot pedal 31, so that the foot pedal 31 is displaced when the force receiving structure 21 swings through the first linkage structure 22; S303, when the upper part of the body of the user moves upward during deep squatting, the foot pedal 31 moves toward the lower part of the body of the user; S304, when the user performs deep squatting, the foot pedal 31 moves in a posture in which the inclination angle remains unchanged toward the front of the body of the user.

[0061] The method of the present scheme focuses on the displacement of the foot pedal 31 during deep squatting, and the inclination angle remains unchanged during the displacement, so that the angle between the foot and the lower leg of the fitness trainer during deep squatting can be better adjusted, so that the lower leg and the foot at the end of the training ankle are always in the range close to vertical, the probability of ankle injury is reduced, and the maximum squatting can be completed, the target hip muscle group is subjected to as much resistance as possible during training, and the training efficiency is greatly improved.

[0062] In the description of the application and in the claims, the terms "top", "bottom", "height", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0063] In the present application and in the embodiments thereof, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect", "fix", etc. should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the present application and in the embodiments thereof, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0065] The above disclosure provides many different implementations or examples to implement the different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of the specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the same reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0066] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they understand the basic inventive concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0067] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A foot pedal linkage mechanism, characterized in that, include: The load-bearing structure includes a first rotating connection part that can be rotatably connected to an external support structure. A first force-applying connection part and a first linkage connection part are respectively provided on both sides of the first rotating connection part. The first force-applying connection part can be linked with the external force-applying structure. Foot pedal unit, including foot pedals; The guide unit is linked to the foot pedal; The first linkage structure is disposed between the force-bearing structure and the foot pedal; when the force-bearing structure rotates about the first rotating connection part as an axis, the first linkage structure drives the foot pedal to move within the limit range of the guide unit.

2. The foot pedal linkage mechanism as described in claim 1, characterized in that, The first linkage structure is a linkage group, one end of the first linkage structure is connected to the first linkage connection part of the force-bearing structure, and the other end is linked to the foot pedal; When the first force-applying connecting part of the force-bearing structure moves away from the foot pedal, the first linkage structure can drive the foot pedal to move towards the front of the human body.

3. The foot pedal linkage mechanism as described in claim 2, characterized in that, The first linkage structure includes: The first linkage component has one end rotatably connected to the force-bearing structure via a first linkage connection part; The second linkage is rotatably connected to the other end of the first linkage, and the second linkage is rotatably connected to the external support structure. The third linkage has one end rotatably connected to the second linkage, and its rotatable connection point is located at a position away from the first linkage of the second linkage; the other end of the third linkage is linked to the foot pedal, which can drive the foot pedal to move.

4. The foot pedal linkage mechanism as described in claim 3, characterized in that, The first linkage structure also includes: The fourth linkage is disposed between the end of the third linkage and the foot pedal. One side of the fourth linkage is rotatably connected to the end of the third linkage, and the other side is fixedly connected to the foot pedal.

5. The foot pedal linkage mechanism as described in claim 1, characterized in that, The foot pedal unit also includes: A pedal bracket is fixedly connected to the foot pedal, and the pedal bracket is located on the underside of the foot pedal. The foot pedal connection structure connects the pedal frame to the guide unit.

6. The foot pedal linkage mechanism as described in claim 5, characterized in that, The guiding unit includes: At least one guide rod shall be installed; the guide rod shall be connected to the external structure. The pedal frame is slidably connected to the guide rod via a foot pedal connection structure.

7. The foot pedal linkage mechanism as described in claim 6, characterized in that, The foot pedal connection structure is a sliding sleeve that is slidably connected to the guide rod; The outer wall of the sliding sleeve of the pedal frame and foot pedal connection structure is hinged.

8. The foot pedal linkage mechanism as described in claim 7, characterized in that, Also includes: The second linkage structure is disposed between the foot pedal and the external support structure; The pedal frame is hinged to the foot pedal connection structure on the side closest to the human body. The side of the pedal frame away from the human body is hinged to the second linkage structure, and the pedal frame is movably connected to the external support structure through the second linkage structure.

9. The foot pedal linkage mechanism as described in claim 5, characterized in that, The guiding unit includes: At least two guide members are provided, which are arranged parallel to each other below the pedal frame; the upper ends of the two guide members are hinged to the pedal frame through a foot pedal connection structure, and the lower ends are hinged to the external support structure.

10. A fitness device, characterized in that, Use the foot pedal linkage mechanism as described in any one of claims 1-9.

11. The fitness device as described in claim 10, characterized in that, include: The force-applying unit can be linked with the first force-applying connection part of the force-receiving structure of the foot pedal linkage mechanism; The force application unit is used to apply force when the user of the fitness equipment exercises; The counterweight unit, linked to the force application unit or foot pedal linkage mechanism, is used to provide load during fitness exercises. Support unit, used as a support structure for fitness equipment.

12. The fitness device as described in claim 11, characterized in that, The force-applying unit includes: The force-applying structure is connected to the first force-applying connection part of the force-receiving structure; The pad assembly is connected to the force-applying structure. The pad assembly includes at least two shoulder pads, with the flexible portion of the shoulder pads facing downwards, corresponding to the user's two shoulder positions.

13. The fitness device as described in claim 11, characterized in that, The counterweight unit includes: The counterweight frame is connected to the force-applying structure of the force-applying unit; The counterweight is detachably connected to the counterweight frame.

14. The fitness device as described in claim 11, characterized in that, The support unit includes: The base frame can be placed on the ground, and the guide unit is located on the upper side of the base frame; The upright frame is connected to the base frame, and the first rotating connection part of the load-bearing structure is rotatably connected to the upper part of the upright frame.

15. The fitness device as described in claim 11, characterized in that, It also includes a limiting unit that can limit the displacement of the force-applying unit, the limiting unit comprising: The first limiting structure is fixedly connected to the support unit, and the first limiting structure is located below the force-applying unit; the first limiting structure serves as a low-level position limit for the force-applying unit. The second limiting structure, serving as a high-level position limit for the force-applying unit, includes: The hook is rotatably connected to the force-applying unit or force-receiving structure; The mounting bracket is fixedly connected to the support unit's upright frame, and the mounting bracket is located on one side of the force-applying unit or the force-bearing structure.

16. A method for linking the structure of a squatting exercise, characterized in that, Including the following steps: S1. Equipped with a force-applying unit that can follow the movement of the user's upper torso during squatting exercises; S2. Equipped with movable foot pedals as a foot pedal structure for users to step on during squatting exercises; S3. A foot pedal linkage mechanism is configured between the force application unit and the foot pedal; when the force application unit is activated, the foot pedal is correspondingly moved by the foot pedal linkage mechanism; the configuration method of the foot pedal linkage mechanism includes: S301. Configure the load-bearing structure. The load-bearing structure adopts a swing arm type structure, one end of which is linked with the force-applying unit. S302. A first linkage structure is configured in the force-bearing structure and the foot pedal, and the foot pedal is displaced when the force-bearing structure swings through the first linkage structure. S303. When the user's torso moves upward during a squatting motion, the foot pedal moves downward toward the user's torso. S304. When the user squats down, the foot pedals move forward toward the user's torso.

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