CN102475951A - Sports equipment and pedal assembly for sports equipment - Google Patents

Abstract

The present invention relates to a sporting apparatus and a step assembly for the sporting apparatus, the step assembly being assembled in a left-right one-by-one manner at a portion of the sporting apparatus where a user's foot is guided to perform repetitive motions, each step assembly having a support surface on which the user steps on, the support surface taking on a shape which extends straight in a width direction as a whole but gradually arches from opposite ends toward a central area in a length direction, the central area supporting a middle portion between a toe end and a heel end of a sole of a foot, and the support surface maintaining the aforementioned shape as a whole when bearing the weight of the user. Thus, the middle part of the sole of the user can be always supported by the central area of the pedal supporting surface at each position on the foot motion trail, and the load is prevented from being concentrated on the tiptoe or heel part.

Description

Sports equipment and pedal assembly for sports equipment

technical field

The present invention relates to sports equipment, in particular to a sports equipment that uses left and right pedals to guide the user's feet to perform repeated movements, and a pedal assembly for the aforementioned sports equipment.

Background technique

In the field of sports equipment, there are many sports equipment that can guide the user's feet to perform cyclical exercise with the left and right pedals. Among them, except for the bicycle that most people are familiar with, the most typical one should be regarded as a kind of bicycle. Indoor exercise equipment called "elliptical exercise machine (Elliptical)", such as disclosed in patents such as U.S. No. 5,540,637, No. 5,685,804, and No. 6,689,019. The right two pedals are for the user to step on and apply force with both feet. Each pedal will support the user's soles to perform circular motion along a fixed, adjustable or variable elliptical closed track that can change with the applied force, so as to Guide the user's legs to perform actions such as walking or running.

When the pedals of the aforementioned elliptical exercise machine perform circular motions, the angles of the length direction of the pedals (referring to the connection direction corresponding to the user's toe and heel end) relative to the ground are usually regulated and cyclically changed in the same cycle. For example, most of the current elliptical exercise machines are designed so that when the pedal moves to the bottom of the aforementioned closed track, the support surface (essentially a plane) for the user to step on the pedal is roughly horizontal, and as the pedal gradually Ascending, the aforementioned support surface will gradually slope forward, and when the pedal descends from the top of the closed track, the support surface will gradually become horizontal again. The designer of the elliptical exercise machine usually properly sets the angle change of the pedal support surface throughout the entire exercise stroke based on ergonomics, so that the user can perform leg movements naturally and comfortably.

However, the angle of the pedal support surface predetermined by the designer is at best an angle that should be suitable for most people in theory, but in reality, different users may be different in each foot cycle due to factors such as body shape, posture, and habits. Stages will have (or want to have) slightly larger or smaller foot angles. That is to say, the predetermined supporting surface angle of the pedal at a certain position or a certain section on the aforementioned closed trajectory may be generally appropriate and comfortable for user A, but it seems too rear-end for user B. Low, the slope is too small, and at the same time, it appears to the user C that the rear end is too high and the slope is too large. Because the known pedal support surfaces are essentially a plane, in the above situation, the rear end of the user's second sole (usually refers to the sole, the same below) will more or less float away from the support surface, and only Use the front end of the sole of the foot to press down on the support surface, or only the support surface supports the front end of the sole of the foot, so that the load on the foot is concentrated on the tip of the toe; otherwise, the user may feel that the foot is getting thicker when stepping on the back On the wedge, because the sole of the foot wants to step down flat, the rear end of the sole of the foot tends to press the supporting surface, or the supported surface tends to push the rear end of the sole of the foot upward, so that the load on the foot is more concentrated on the heel . What's more, the same user may feel that the inclination of the support surface is too small at a certain position or section in the same pedal stroke, and feel that the inclination of the support surface is too large at another position or section. In short, the pedal structure and action of conventional elliptical exercise machines basically cannot satisfy the comfort of feet of all users during the entire pedal stroke.

In response to the above-mentioned problems, U.S. Patent No. 7,300,387 discloses a pedal structure suitable for elliptical exercise machines. Its main feature is that each pedal is independently pivoted on the center of its bottom through a pivot corresponding to the left and right axes for guiding In other words, even if the above-mentioned support rod does not move (that is, the pedal stops at a certain position on the closed track), the length direction of the pedal can still deflect relative to the support rod and the ground. When performing leg exercises, any position of the pedal on the closed track can be deflected into a more appropriate angle in response to the force applied by the user's feet at that time. Another conventional method with a similar technical idea is to connect the front and rear ends of the bottom of the pedal to the aforementioned support rod with elastic bodies, so that the pedal support surface can be tilted forward or backward relative to the support rod at any time. However, the above two solutions may result in unstable foot support because the deflection/tilt resistance of the pedal is too low, or because the deflection/tilt resistance is too high, resulting in extra force on the feet, which instead becomes a burden on the user's feet .

Different from the aforementioned elliptical exercise machine, another kind of indoor exercise equipment that can provide similar leg exercises, such as the exercise equipment disclosed in U.S. Patent No. 7,568,999 and No. 7,594,877, also uses two left and right sides that will restrain each other. The pedals are for the user to stand on both feet, but each pedal is reciprocating along a straight line or arc reciprocating trajectory, including up and down and front and rear displacements, so as to guide the user's feet to carry out left and right forced leg lifting and stepping. pressure movement. The pedal support surfaces of most of this type of sports equipment will maintain the same angle (for example, horizontal) throughout the reciprocating stroke, and the design also requires the user's soles to be guided by the pedals at a corresponding angle to form the predetermined aforementioned leg movements. The comfort issues mentioned above due to the difference between the ideal foot angle and the actual pedal angle also exist in this type of exercise equipment.

Contents of the invention

In view of the problems referred to above, the main purpose of the present invention is to provide a kind of sports equipment, and it can provide a user's both feet to step on the station with two pedals of left and right and guide pin part to carry out the repeated motion of circulation or reciprocating form, and allow the user The left foot and the right foot can obtain balanced and stable support from the corresponding pedals at each point in the exercise stroke at the same time, and the feet are more comfortable.

Another object of the present invention is to provide a pedal assembly for the aforementioned sports equipment, which can support the soles of the user's feet in a balanced and stable manner at various positions during the aforementioned repeated movements, making the feet more comfortable.

In order to achieve the above object, the present invention adopts the following technical solutions: a kind of sports equipment, which can be used for a user to perform leg exercises in a standing posture; it is characterized in that the sports equipment includes: a frame, which is used to be arranged on the ground; A left pedal and a right pedal can be movably connected to the frame body, and can perform repeated movements including front and rear and up and down displacements along a movement track, and the left and right pedals will be mutually restrained to move forward, backward and forward. Reverse movement in the up and down direction; each of the pedals has a front end and a rear end opposite to each other, and an inner side and an outer side opposite to the left and right, and a length direction is defined by the connecting line of the front and rear ends, and The connecting lines on the inner and outer sides define a width direction; each of the left pedal and the right pedal has a support surface for the user's left foot and right foot to stand on respectively, and each of the support surfaces as a whole It is a shape that extends straight in the width direction but gradually arches in the length direction from two opposite ends to the central area, and the central area is used to support the space between the toe end and the heel end of the user's sole In addition, the structure of the pedal enables the support surface to maintain the shape as a whole when bearing the weight of the user.

In the above technical solution, the movement track of the pedals is a closed track, and the left and right pedals will restrain each other to maintain a roughly relative position on the closed track. In addition, when moving circularly along the closed track, , the angle of the length direction of each of the pedals relative to the ground will change cyclically correspondingly.

When viewed from the side, the supporting surface generally presents an arc between 18 and 38 degrees from its front end to its rear end.

The length of the connecting line at the front and rear ends of the support is between 300 and 400 mm, and the height from the most arched part of the center of the support surface to the connecting line at the front and rear ends of the support is between 13 and 34 mm.

Each of the pedals has a relatively hard bottom pad and a relatively soft surface layer; the bottom pad has a top surface that generally extends straight in the width direction but extends in the length The shape is gradually arched from the opposite two ends to the central area; the surface layer is covered on the top surface of the bottom pad, and its surface forms the support surface.

The surface layer has a hardness between 50° and 60° ShoreA.

The present invention also provides another technical solution: a kind of sports equipment, which can be used for a user to perform leg exercises in a standing posture; it is characterized in that the sports equipment includes: a frame; a left pedal and a right pedal, which can It is movably connected to the frame body, and can carry out repeated movements including front-back and up-down displacements along a movement track, and the left and right pedals will restrain each other and move in the opposite direction in the front-back and up-down directions; The pedal has a front end and a rear end opposite to each other, and a lengthwise direction is defined by a connecting line between the front and rear ends; the left pedal and the right pedal each have a support surface for the user's left foot and The right foot stands on the stand, and the support surface has a front end support area relative to the front, a rear end support area relatively behind, and a central support area between the front end support area and the rear end support area, The front support area, the rear support area and the central support area are respectively used to support the front end, the rear end and the middle part between the front end and the rear end of the user's sole, wherein the central support area The connecting line of the front and rear ends is roughly parallel to the length direction, the rear end of the front support area is adjacent to the front end of the central support area, and the connection line of the front and rear ends of the front support area is gradually lower from the back to the front The front end of the rear end support area is adjacent to the rear end of the central support area, and the connecting line between the front end and the rear end of the rear end support area is gradually lowered from front to back. In addition, the structure of the pedal makes the When bearing the weight of the user, the supporting surface can still maintain its shape as a whole.

The support surface presents a convex arc surface as a whole.

The present invention also provides a pedal assembly of sports equipment, which is used to be assembled on the part of the sports equipment that guides the user's feet to perform repeated movements, and is characterized in that: the pedal assembly has a Stepping on the support surface of the station, the support surface has a length direction corresponding to the two ends of the user's toe and heel, and a width direction corresponding to the inner and outer sides of the user's foot, and the support surface as a whole appears on the A shape that extends straight in the width direction but gradually arches from opposite ends to the central area in the length direction, and the central area is used to support the middle part between the toe tip and the heel end of the user's sole, In addition, the structure of the pedal assembly is such that the support surface maintains the shape as a whole when bearing the weight of the user.

The pedal assembly is assembled on the sports equipment in a detachable manner.

By adopting the above-mentioned technical scheme, the middle part of the sole of the user’s foot can always be supported by the central area of the pedal support surface in the process of leg movement in the present invention. The relationship between the center of gravity and the slightly forward or rearward abutment against the support surface, so that both feet can simultaneously obtain balanced and stable support from the pedals at all points in the exercise stroke.

Description of drawings

Fig. 1 is the perspective view of the sports equipment that a preferred embodiment of the present invention provides;

Fig. 2 is a side view of the sports equipment provided by a preferred embodiment of the present invention;

Fig. 3 is a three-dimensional assembled view of the pedal part in a preferred embodiment of the present invention;

Fig. 4 is a three-dimensional exploded view of the pedal part in a preferred embodiment of the present invention;

Fig. 5 is a sectional view along the length direction of the pedal part in a preferred embodiment of the present invention;

Fig. 6 is a cross-sectional view along the width direction of the pedal part in a preferred embodiment of the present invention.

Detailed ways

The structure and effect of the present invention will be described in detail by citing the following embodiments in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the sports equipment provided by a preferred embodiment of the present invention basically belongs to the elliptical exercise machine, and its general structure and operating principle are all known skills, and are only briefly explained below: sports equipment of the present invention In structure, it mainly includes a frame body 10 arranged on the ground, a crank mechanism 20 arranged at the front end of the frame body 10 and two left and right swing arms 30, connected between the crank mechanism 20 and the rear end guide rail 12 of the frame body 10 The left and right two support rods 40, the left and right two connecting rods 50 coupling the two swing arms 30 and the two support rods 40, and the left and right two pedals 60 respectively affixed to the rear ends of the two connecting rods 50. In more detail, the front end of each support rod 40 can be guided by the crank 22 to move around a circle, the rear end can be guided by the guide rail 12 to reciprocate back and forth, and the front end of each connecting rod 50 can be moved by the bottom end of the swing arm 30 . Guided to swing back and forth, a predetermined position near the rear end is pivotally connected to a predetermined position in the middle section of the corresponding support rod 40 . As a result, the pedal 60 fixed on the rear end of the connecting rod 50 can carry out a circular movement including front and rear and up and down displacements along a generally elliptical closed track T (note: the closed track T in the figure is a schematic track of the front end of the pedal 60 ), and, based on the left and right two cranks 22 of the crank mechanism 20 keep 180 degrees relative to each other, roughly, the two pedals 60 will restrain each other and reversely move in the front, rear and up and down directions, and maintain a roughly relative position on the closed track T At the same time, the angle of the pedal 60 relative to the ground will change cyclically in the aforementioned cyclical movement.

During use, the user stands on the left and right two pedals 60 with both feet, and can hold both hands on the handle 32 at the top of the left and right two swing arms 30 as required, and apply force to drive the pedal 60 (and hold The lever 32) moves along its predetermined trajectory, so that the foot is guided by the pedal 60 to move cyclically along the closed trajectory T, and the angle of the foot is cyclically changed along with the pedal angle. During exercise, the position of the user's body and center of gravity in the front-rear axis and the left-right axis will be roughly kept in the middle of the left pedal 60 and the right pedal 60, so that the left and right pedals 60 will continue to share the user's weight .

As shown in Figure 3, each pedal 60 has a front end 62 and a rear end 64 opposite to each other, and an inner side 66 and an outer side 68 opposite to the left and right, and the connecting line between the front and rear ends 62, 64 defines a length direction L , The connecting line between the inner and outer sides 66, 68 defines a width direction W perpendicular to the length direction L. Like most known elliptical exercise machines, the angle of the length direction L of each pedal 60 in this embodiment relative to the ground will change with the same cycle as the aforementioned cyclical movement, while the width direction W is fixed and remains corresponding to The left and right axis of the frame body 10.

As shown in Figures 4 to 6, each pedal 60 is mainly composed of a main part 70, a bottom pad 80 and a surface layer 90, wherein the main part 70 is formed by plastic injection and locked on the rear end of the connecting rod 50 On a metal pallet 52 inside, there is a flat plate portion 72 stacked on the top side of the pallet 52, and a low wall portion 74 surrounding the left and right sides and the front side of the flat plate portion 72. The top surface of the flat plate portion 72 is It is generally rectangular, and its long axis and short axis correspond to the length direction L and the width direction W respectively. The bottom pad 80 is molded by rubber injection, and has a main body 82 superimposed on the top side of the flat plate 72, and a plurality of columnar portions 86 that pass through the flat plate 72 and the supporting plate 52 from the bottom surface 84 of the main body 82 and pass through the flat plate 72 and the supporting plate 52. , the bottom end of each columnar portion 86 is embedded in the bottom side of the supporting plate 52 , so that the bottom pad 80 can be positioned on the main component 70 . The outer edge of the main body portion 82 of the bottom pad 80 corresponds to the shape of the top surface of the flat plate portion 72 of the main member 70 , and the bottom surface 84 substantially constitutes a plane, flatly abutting against the top surface of the flat plate portion 72 . On the other hand, the top surface 88 of the main body 82 generally extends straight in the width direction W (equivalent to horizontal extension in this embodiment) but gradually arches in the length direction L from two opposite ends to the central region. The surface layer 90 is also formed by rubber injection, completely covered and glued on the arched top surface 88 of the bottom pad 80, and its surface 92 is correspondingly extending straight in the width direction W but extending from the opposite ends to the central area in the length direction L. A gradually arched shape. The inner surface 96 of the surface layer 90 and the top surface 88 of the bottom pad 80 are respectively formed with a plurality of interfitting grooves and convex lines (not labeled), which are used to reduce the possibility of the surface layer 90 slipping.

Different from the planar support surface of existing sports equipment such as elliptical exercise machines, the pedal 60 in the present invention is the arched surface 92 of the surface layer 90 for the user to step on and stand, and is supported by the central area on the length direction L. The middle part between the tip of the foot and the heel. In terms of size, the length of the connecting line at the front and rear ends of the surface (hereinafter referred to as the supporting surface) 92 is between 300 and 400 mm, and at the same time, the height from the most arched part of the central part of the supporting surface 92 to the aforementioned connecting line is between 13 and 34 mm. between. Wherein, the most arched part of the supporting surface 92 is still lower than the low wall part 74 of the main part 70 . In this embodiment, the support surface 92 forms a convex arc surface with a constant curvature as a whole. When viewed from the side (as shown in FIG. 5 ), the support surface 92 presents an arc ranging from 18 to 18 from the front end to the rear end. Arcs between 38 degrees.

In addition, in the above composition, the hardness of the surface layer 90 which is also made of rubber is lower than that of the bottom pad 80. Specifically, the material of the bottom pad 80 is a combination of styrene-butadiene rubber (SBR) and polybutadiene rubber (BR). Synthetic, with a hardness of 60-70° or 65±5° Shore A. The material of the surface layer 90 is isoprene rubber (IR), the hardness is 50-60° or 55±5° Shore A, and the average thickness is obviously smaller than the average thickness of the main body 82 of the bottom pad 80 . With this kind of pedal structure, the user will have a better tactile feeling when stepping on the soles of the feet, and when the pedal 60 bears the user's weight, the support surface 92 as a whole can still maintain the aforementioned shape without specific deformation.

In the present invention, the bottom pad 80 may be set to a higher rubber hardness, or made of a harder material (such as plastic), so as to provide a more solid arched top surface to support the flexible surface layer 90 . Of course, the pedal in the present invention may not have the surface layer 90, for example, the arched top surface of the base pad with appropriate hardness may be directly used as the supporting surface, or the plastic main part may be directly formed into an arched supporting surface.

Utilizing the shape of the above-mentioned support surface, when the user is using the above-mentioned sports equipment, at any position on the closed trajectory T, if the angle of the user’s foot matches the angle of the pedal at this position, that is, the connecting line between the tip of the toe and the end of the heel Roughly parallel to the length direction L of the pedal 60, the entire sole or most of the area centered on the middle part of the sole will abut against most of the area centered on the central area of the support surface 92, and the center of gravity generally falls on the center of the support surface 92. Central position; if there is some difference between the angle of the foot and the angle of the pedal, the middle part of the sole of the user's foot will still be supported by the central area of the arched support surface 92. Differently, the center of gravity abuts on the support surface 92 slightly forward or rearward. As the cycle moves, the relationship between the angle of the pedal and the angle of the foot may constantly change, but through the moderately arched shape of the support surface 92, the contact area between the sole of the user's foot and the support surface 92 may remain unchanged or change little. Only the center of gravity of the feet moves back and forth in a small range. In this way, both feet of the user can obtain balanced and stable support from the pedal 60 at each time point in the exercise stroke, and the load on the feet can be dispersed without being concentrated on the toes or heels, which is more comfortable.

The pedal support surface 92 in this embodiment (ignoring the anti-skid or decorative protrusions and depressions scattered on the surface) forms a convex arc surface gradually arched from the front and rear ends to the central area as a whole. The arc must be within an appropriate range so that the user's feet can keep a large area in contact with the supporting surface 92 during the movement, and at the same time, the center of gravity can be moved back and forth naturally in accordance with the angle relationship between the feet and the pedal. If the arc is too small (that is, the arch is not obvious), the above functions will not be effective, and the result may be similar to a conventional flat support surface; if the arc is too large (that is, the arch is obvious), the load on the foot may be concentrated In the middle of the sole of the foot. For typical pedal lengths, the arc is ideally between 18 and 38 degrees.

As shown in Figure 5, from another point of view, the support surface 92 has a front end support area 93 relative to the front, a rear end support area 94 relatively behind, and a support area between the front end support area 93 and the rear end support area 94. The central support area 95 between them is respectively used to support the front end, the rear end of the user's sole, and the middle part between the front end and the rear end. Roughly parallel to the length direction L, the rear end of the front support area 93 is adjacent to the front end of the central support area 95, and the connecting line between the front and rear ends of the front support area 93 is gradually lowered from the back to the front, and the front end of the rear support area 94 is Adjacent to the rear end of the central support area 95, and the connecting line between the front and rear ends of the rear support area 94 is gradually lowered from the front to the rear.

Of course, the pedal support surface in the present invention is not limited to a standard, constant curvature convex arc surface, for example, the arched support surface may have a relatively small curvature in a certain section (such as the aforementioned central support area) and other sections ( For example, the curvature of the aforementioned front end and rear end support area) is relatively large, or the support surface may also be formed by a number of horizontally extending strips or rectangular planes connected with different inclinations. , The shape of the rear two ends gradually arching towards the central area.

In addition, excluding the situation that the support surface is provided by an extremely rigid structure, when the pedal in the present invention bears the weight of the user, the support surface will be more or less deformed, but the deformation will not specifically affect the overall shape of the support surface . For example, assuming that the pedal has an arched support surface similar to a spring structure, although it presents an arc within a good range (18-38 degrees) before being stepped on, it is flattened into an arc that is not obvious when being stepped on ( For example, an arc surface of 10 degrees or less), such a supporting surface is difficult to bring into play the above-mentioned effects of the present invention.

For the elliptical exercise machine provided by the above embodiments, the user can adjust the long-axis inclination of the closed track T before and during use. The technical means are as disclosed in U.S. Patent No. 7,654,936. It is pivotally connected to the bottom of the frame body 10, and the front end of the guide rail 12 can be adjusted and positioned at different heights by electric or manual means. The long axis of the closed trajectory T of the pedal 60 driven by the part also presents different inclinations, so as to achieve the purpose of adjusting the difficulty of exercise. Wherein, when the closed track T changes, the angle of the pedal 60 relative to the ground will also change slightly, but based on the effect of the pedal support surface 92 of the present invention, the user can obtain comfortable foot support under various motion tracks .

The aforementioned U.S. Patent No. 7,654,936 also discloses several different types of elliptical exercise machine structures and technical means for adjusting pedal tracks, which are also applicable to the present invention. More broadly speaking, the present invention is actually applicable to various elliptical exercise machines or substantially similar exercise equipment, including the closed tracks of the pedals that are fixed, adjustable, or changeable according to the force (such as disclosed in the aforementioned U.S. Patent No. 6,689,019 Technology). In addition, the present invention is also applicable to sports equipment in which the pedals reciprocate on straight lines, arcs, etc. (such as the types disclosed in the aforementioned US Pat. Furthermore, the present invention does not rule out that the repeated movement of the pedal includes left and right displacement, and the width direction of the pedal does not completely correspond to the left and right axes. In a nutshell, in the present invention, sports equipment provides leg movement for a user in a standing position through left and right pedals, and the pedals may move repeatedly on various shapes of predetermined or free closed or non-closed motion tracks, and The left and right pedals will restrain each other and move in the opposite direction in the front, back and up and down directions. At the same time, each pedal has a corresponding fixed angle at any position on the motion track.

For the elliptical exercise machine of the above-mentioned embodiment, "the left and right pedals will restrain each other and move in reverse in the front, rear and up and down directions" means, for example, when the left pedal 60 moves down and backward along the closed track T , the right pedal 60 will be forced by the mechanism to move up and forward along the closed track T, and vice versa. Because the left and right pedals of this type of sports equipment will be arranged one after the other during exercise, the user's center of gravity will usually remain in the middle of the left and right pedals (unlike when using a general stepper (Stepper) will be placed in the middle). The center of gravity alternately shifts between the two feet), so that the left and right two pedals continue to share the weight of the user, and utilize the aforementioned arched support surface to properly support the left and right soles of the feet simultaneously.

The pedal in the sports equipment provided by the present invention can also be designed to allow the user to select the structure of the shape of the supporting surface. A simple example is to imagine that the arched bottom pad 80 (together with the surface layer 90) of the pedal 60 in the aforementioned embodiment is based on It can be assembled on the main part 70 in a dismountable manner, so that the user can choose to install the bottom pad 80 according to personal preferences, step on the arched support surface to exercise, or choose to remove the bottom pad 80, The stepper moves on the planar support surface provided by the main part 70 or on the arched support surface with a small radian. Of course, in order to achieve the above effects, the removable pedal assembly is not limited to the aforementioned form, for example, it may be a shell plate with an arched surface.

Claims (10)

1. a sports equipment can supply a user to carry out leg exercise with standing position; It is characterized in that said sports equipment includes:

One support body is used for being provided with on the ground;

One left-hand tread plate and a right-hand tread plate can be connected on the said support body versatilely, can include moving repeatedly of front and back and upper and lower displacement along a movement locus, and said left and right two pedals can pin down and counter motion on front and back and above-below direction each other; An each said pedal relative front end and rear end before and after having, and about a relative inboard and outside, and define a length direction, and define a width with the tie line of said inside and outside two sides with the tie line of said forward and backward two ends; Said left-hand tread plate and right-hand tread plate respectively have a supporting surface; Supply user's left foot and right crus of diaphragm to step on the station respectively; And; Each said supporting surface is presented on straight extension on the said width but the shape that on said length direction, arched upward gradually toward middle section by relative two ends on the whole, and said middle section is used to support the toe end of said user's sole and the middle part between the heel end, in addition; The structure of said pedal makes said supporting surface when bearing said user's weight, still can keep said shape on the whole.

2. sports equipment as claimed in claim 1; It is characterized in that: the movement locus of said pedal is a sealing track; Said left and right two pedals can pin down each other and maintain the roughly relative position on the said sealing track; In addition, along said sealing track shuttling movement the time, the said length direction of each said pedal is with respect to the angle on ground circulation change accordingly.

3. sports equipment as claimed in claim 1 is characterized in that: during by viewed, said supporting surface presents the camber line of a radian between 18 to 38 degree on the whole by its front end to rear end.

4. sports equipment as claimed in claim 1; It is characterized in that: the tie line length of forward and backward two ends of said supporting surface is between 300 to 400mm, and the central authorities of said supporting surface arch upward the height of the forward and backward two end tie lines of position to supporting surface most between 13 to 34mm.

5. sports equipment as claimed in claim 1 is characterized in that: each said pedal has a relative harder heelpiece and a relative softer top layer; Said heelpiece has an end face, and said end face is presented on straight extension on the said width but the shape that on said length direction, arched upward gradually toward middle section by relative two ends on the whole; Said top layer is overlayed on the end face of said heelpiece, and its surface forms said supporting surface.

6. sports equipment as claimed in claim 5 is characterized in that: the hardness on said top layer is between 50 to 60 ° of ShoreA.

7. a sports equipment can supply a user to carry out leg exercise with standing position; It is characterized in that said sports equipment includes:

One support body;

One left-hand tread plate and a right-hand tread plate can be connected on the said support body versatilely, can include moving repeatedly of front and back and upper and lower displacement along a movement locus, and said left and right two pedals can pin down and counter motion on front and back and above-below direction each other; Each said pedal has front and back relative a front end and a rear end, and defines a length direction with the tie line of said forward and backward two ends; Said left-hand tread plate and right-hand tread plate respectively have a supporting surface; Supply user's left foot and right crus of diaphragm to step on the station respectively; And; Said supporting surface have one relatively preceding front end Support, relatively after the central Support of Support, rear end and between said front end Support and Support, rear end, said front end Support, Support, rear end and central Support are respectively applied for front end position, position, rear end and the middle part between front end position and position, rear end of support user sole, wherein; The tie line of forward and backward two ends in said central Support is roughly parallel to said length direction; The rear end of said front end Support is in abutting connection with the front end of said central Support, and the tie line of forward and backward two ends in front end Support is tiltedly low gradually back to front, and the front end of Support, said rear end is in abutting connection with the rear end of said central Support; And the tie line of forward and backward two ends in Support, rear end is by tiltedly low gradually after going to; In addition, the structure of said pedal makes said supporting surface when bearing said user's weight, still can keep shape on the whole.

8. sports equipment as claimed in claim 7 is characterized in that: said supporting surface presents a convex globoidal on the whole.

9. the pedal assembly of a sports equipment; Be used to be assembled in said sports equipment and guide the position that user's foot moves repeatedly; It is characterized in that: said pedal assembly has one and supplies the single pin of user to step on the supporting surface at station, and said supporting surface has a length direction of corresponding user's tiptoe, heel two ends, and a width of inside and outside two sides of corresponding user foot; And; Said supporting surface is presented on straight extension on the said width but the shape that on said length direction, arched upward gradually toward middle section by relative two ends on the whole, and said middle section is used to support the toe end of said user's sole and the middle part between the heel end, in addition; The structure of said pedal assembly makes said supporting surface when bearing said user's weight, still can keep said shape on the whole.

10. the pedal assembly of sports equipment as claimed in claim 9 is characterized in that: said pedal assembly is assembled on the said sports equipment with the mode of arbitrarily dismounting.

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