TWI881646B - Sports equipment that allows users to perform leg exercises in a seated position - Google Patents

Abstract

A sports equipment includes a seat and a sports mechanism in front of the seat. The sports mechanism has left and right pedals for the user sitting on the seat to step on respectively. When exercising, based on the control of the sports mechanism, the middle part of each pedal cyclically displaces along a predetermined motion track, and the elevation angle of the toe tip relative to the heel end gradually increases and decreases in a cycle. The motion track has a highest position, a lowest position, a front position, a rear position, a maximum elevation position and a minimum elevation position. The maximum elevation position is located in the range from the highest position to the lowest position and passes through the front position on the way, and the minimum elevation position is located in the range from the lowest position to the highest position and passes through the rear position on the way.

Description

Sports equipment that allows users to perform leg exercises in a seated position

The present invention relates to sports equipment, and more specifically, to sports equipment that allows a user to perform leg exercises in a sitting position.

Among aerobic indoor exercise equipment, the most popular exercise equipment for users to do leg exercises in a sitting position is the stationary bike. As for the more popular upright bikes and spinning bikes, the user's body posture and leg exercise methods are basically similar to riding a regular bicycle or road bike, that is, the buttocks sit on a seat, the upper body is upright or leaning forward, both hands grasp the fixed handlebars in front of the seat, and both feet step on the pedal crank set under the seat to achieve the effect of leg exercise and aerobic exercise. However, the above body posture and leg exercise methods may be slightly difficult and unsafe for the elderly and those with lower athletic ability such as the middle-aged and elderly.

A recumbent bike is a stationary bike with a relatively gentle exercise mode. As shown in FIG12 , its pedal crank set (represented by two opposite pedals 1 in the figure) is located in the front and lower part of the seat 2. Correspondingly, a backrest 2 is provided on the upper rear part of the seat 2 for the user to lean on, so that the user can perform leg exercises by pedaling the pedals 1 in a relatively relaxed and comfortable posture. It is particularly suitable for the elderly and middle-aged and elderly people with low exercise ability, or people who just want to exercise lightly. During exercise, each pedal 1 rotates around a predetermined circular track T. The diameter of the aforementioned circular track T is about 33 cm. If it is too small, it will not provide enough foot movement range and leg activity. If it is too large, it will exceed the natural movement range and cannot be exercised comfortably. In addition to revolving around the center of the circular track T, each pedal 1 can also freely rotate around a pivot axis corresponding to the left and right axes in the center of itself, so as to adapt to the changing foot angle of the user's foot when the foot rotates. In the standard use mode, the seat 2 is adjusted to a suitable position so that when the pedal 1 rotates to the position farthest from the seat 2 (such as the position near the right foot pedal in the figure), the user's legs are nearly fully extended; in contrast, when the pedal 1 rotates to the position closest to the seat 2 (such as the position near the left foot pedal in the figure), the user's legs present the maximum flexion state in the whole process, and the thigh and knee are almost raised to the highest position, for example, the left thigh in the figure is raised about 37 degrees, and the inner side of the left knee joint is about 67 degrees. The above-mentioned degree of thigh raising and knee bending may be a little strenuous for some people with low motor ability or limited leg mobility. In addition, depending on the user's body shape, thigh raising may squeeze the abdomen and make the user uncomfortable.

U.S. Patent No. 7,713,176 discloses a sports equipment that allows users to perform leg exercises in a sitting position. The front of the seat is provided with left and right pedals. Each pedal is connected to the frame in the front through a parallelogram linkage mechanism, so that it can reciprocate along a predetermined trajectory that is approximately linear, and the pedal angle remains unchanged, remaining facing backward and upward for the user to step on. In addition, the two pedals are linked to each other and move in opposite directions. When one of the pedals sinks forward and downward, the other pedal will float backward and upward. In this way, the user can perform leg exercises by stepping on both feet alternately, and can freely control the depth of stepping on and the height of lifting, without having to forcefully raise the thigh or bend the knee. However, the pedal will also be lowered if it is raised lower, and the exercise stroke will be directly shortened, which may lead to insufficient leg activity. In addition, the user's legs just repeatedly stretch forward and downward and bend backward and upward, and just like when pedaling a bicycle, the feet and knees always rise and fall together, making the movements relatively monotonous.

There are also some sports equipment on the market that allow users to perform similar pedaling exercises in a sitting position, but the movement mechanism of most of these equipment extends between the bottom and front of the seat. For example, a crank set is provided under the seat, and two left and right connecting rods are connected between the crank set and the left and right pedals in front of the seat. This means that when users sit on the seat to prepare for exercise, or leave the seat after exercise, they must step over the connecting rods under their feet, which is inconvenient and there is a risk of stumbling.

The present invention aims to solve the problems of the above-mentioned prior art. The main purpose is to provide a sports equipment that allows users to perform leg exercises in a sitting position. When users perform the above-mentioned leg exercises, the degree of thigh lifting and knee flexion is relatively mild, while at the same time there is sufficient foot movement range and leg activity, with low exercise difficulty and high exercise effect.

Another purpose of the present invention is to provide a sports equipment that allows users to perform leg exercises in a sitting position. The leg movements of users during the aforementioned leg exercises are natural and smooth, and the movements are different from the monotonous repetitive extension and flexion in the prior art, and the feet and knees are always raised and lowered together.

Another purpose of the present invention is to provide a sports equipment that allows users to perform leg exercises in a sitting position. The structure of the sports mechanism is compact, and when the user is ready to exercise and wants to sit on the seat, or when the user wants to leave the seat after the exercise, he does not need to step over any components of the sports mechanism, which is more convenient and safe.

Another purpose of the present invention is to provide a sports equipment that allows users to perform leg exercises in a sitting position. While performing the aforementioned leg exercises, users can choose to perform coordinated hand exercises to improve the exercise effect.

In order to achieve the above-mentioned purpose, the present invention provides a sports equipment for users to perform leg exercises in a sitting position, comprising: a frame; a seat, which is arranged on the frame and used to support the buttocks of the user in a fixed position; a movement mechanism, which can be movably arranged on the frame and has left and right pedals located in front of the seat for the user to step on respectively, each of which has a toe end and a heel end, so as to and a middle portion between the aforementioned toe tip and the aforementioned heel end; when the aforementioned leg movement is performed, based on the control of the aforementioned movement mechanism, the aforementioned middle portion of each aforementioned pedal is cyclically displaced along a predetermined pedal movement trajectory relative to the aforementioned frame, and the relative angle between the aforementioned toe tip and the aforementioned heel end cyclically changes in a predetermined manner; the aforementioned pedal movement trajectory is located in a direction defined by the up-down axis and the front-back axis of the aforementioned frame On the lead plane, the closed path has a highest position, a lowest position, a front position, a rear position, a maximum elevation position and a minimum elevation position, wherein the maximum elevation position is located in the travel from the highest position to the lowest position and passing through the front position, and the minimum elevation position is located in the travel from the lowest position to the highest position and passing through the rear position; each of the pedals always keeps the toe tip higher than the heel end, and in the process of the middle part moving from the maximum elevation position to the minimum elevation position along the pedal movement trajectory, the elevation angle of the toe tip relative to the heel end gradually decreases, and in the process of the middle part moving from the minimum elevation position to the maximum elevation position along the pedal movement trajectory, the elevation angle of the toe tip relative to the heel end gradually increases.

Preferably, the length of the pedal movement trajectory from the aforementioned last position to the aforementioned highest position is greater than the length of the pedal movement trajectory from the aforementioned highest position to the aforementioned front and lower position to the aforementioned front position.

Preferably, the height difference between the highest position and the lowest position of the pedal motion track in the vertical axis is smaller than the front-rear difference between the frontmost position and the rearmost position in the front-rear axis, and the pedal motion track has a long axis, and the long axis has a relatively high front end and a relatively low rear end.

Preferably, the stroke length between the aforementioned maximum elevation angle position and the aforementioned frontmost position of the aforementioned pedal motion trajectory is shorter than the stroke length between the aforementioned maximum elevation angle position and the aforementioned highest position, and also shorter than the stroke length between the aforementioned maximum elevation angle position and the aforementioned lowest position; the stroke length between the aforementioned minimum elevation angle position and the aforementioned last position of the aforementioned pedal motion trajectory is shorter than the stroke length between the aforementioned minimum elevation angle position and the aforementioned highest position, and also shorter than the stroke length between the aforementioned minimum elevation angle position and the aforementioned lowest position.

Preferably, the maximum elevation angle position of the pedal movement trajectory is between the frontmost position and the lowest position, and the minimum elevation angle position is between the rearmost position and the highest position.

Preferably, the aforementioned motion mechanism also has two left and right first connecting rods and two left and right second connecting rods all located in front of the aforementioned seat; each of the aforementioned first connecting rods has a surrounding portion, a first reciprocating portion and a first pivot portion, the aforementioned surrounding portion is restricted to move on a circular track relative to the aforementioned frame, and the aforementioned first reciprocating portion is restricted to move on a first reciprocating track relative to the aforementioned frame; each of the aforementioned second connecting rods has a second reciprocating portion and a second pivot portion, the aforementioned second reciprocating portion is restricted to move on a second reciprocating track relative to the aforementioned frame, and the aforementioned second pivot portion is pivoted to the corresponding aforementioned first connecting rod. The first pivot part of a connecting rod; while the annular part of the first connecting rod rotates one circle along the circular track, the first reciprocating part of the first connecting rod and the second reciprocating part of the second connecting rod reciprocate once along the first reciprocating track and the second reciprocating track respectively, and the first pivot part of the first connecting rod and the second pivot part of the second connecting rod rotate one circle along the closed track, during which the change of the relative angle between the two ends of the second connecting rod is less than the change of the relative angle between the two ends of the first connecting rod; the left and right pedals are respectively arranged on the left and right second connecting rods.

Preferably, each of the aforementioned first connecting rods has a front end and a rear end, the aforementioned surrounding portion is at the aforementioned front end, the aforementioned first pivot portion is at the aforementioned rear end, and the aforementioned first reciprocating portion is between the aforementioned front end and the aforementioned rear end; each of the aforementioned second connecting rods has a front end and a rear end, the aforementioned second reciprocating portion is at the aforementioned front end, and the aforementioned second pivot portion is behind the aforementioned second reciprocating portion; each of the aforementioned pedals is provided at the rear half of the corresponding aforementioned second connecting rod.

Preferably, the first reciprocating track has a relatively high front end and a relatively low rear end; the closed track has a long axis, and the long axis has a relatively high front end and a relatively low rear end; the second reciprocating portion of each second connecting rod is higher than the second pivot portion; the second reciprocating track has a relatively high front end and a relatively low rear end; in side view, the first reciprocating track enters the closed range of at least one of the circular track and the closed track, and the second reciprocating track also enters the closed range of at least one of the circular track and the closed track.

Preferably, the aforementioned motion mechanism further comprises left and right crank arms, left and right first swing arms and left and right second swing arms all located in front of the aforementioned seat; each of the aforementioned crank arms has an inner end and an outer end, the inner ends of the aforementioned left and right crank arms are pivoted together on the aforementioned frame according to a first axis, and the outer ends of the aforementioned left and right crank arms are 180 degrees opposite to each other with the aforementioned first axis as the center, and are respectively pivoted to the aforementioned annular portions of the aforementioned left and right first connecting rods; each of the aforementioned first swing arms has an axis end and a swing end, and the aforementioned left and right first swing arms are pivoted together on the aforementioned frame according to a first axis. The axis ends of the arms are respectively pivoted to the frame according to a second axis, and the swing ends of the left and right first swing arms are respectively pivoted to the first reciprocating parts of the left and right first connecting rods; each of the second swing arms has an axis end and a swing end, and the axis ends of the left and right second swing arms are respectively pivoted to the frame according to the second axis, and the swing ends of the left and right second swing arms are respectively pivoted to the second reciprocating parts of the left and right second connecting rods; the first axis and the second axis both correspond to the left and right axis of the frame.

Preferably, the motion mechanism further comprises left and right joysticks, which are respectively connected to the left and right first swing arms or respectively connected to the left and right second swing arms; each of the joysticks comprises a handle for the user to grasp; the swing ends of each of the first swing arms and the swing ends of each of the second swing arms are lower than the second axis, and each of the handles is higher than the second axis.

10: Frame

11: Base

12: Bracket

13: Pillar

14: Console

15: Hanging seat

16: Axis rod

20: Seat set

21: Enter and leave seats

22: Lifting seat

23: Seat

24: Chair back

25:Handle

30:Sports organizations

40: Crankset

41: Crankshaft

42: Crank arm

43: Belt drive mechanism

44: Flywheel

45: Resistance device

50: First connecting rod

51: Lug

52: pivot

60: Second connecting rod

61: Pallet

62: Side panels

63: pivot

70: First swing arm

71: shaft barrel

72: pivot

80: Second swing arm

81: shaft barrel

82: pivot

85: Joystick

86: Grip

90: Pedal

91: Tip of foot

92: Heel end

93: Middle part

A1: First axis

A2: Second axis

L: Long axis

P1: Highest position

P2: Lowest position

P3: The front position

P4: Last position

P5: Maximum elevation position

P6: minimum elevation position

T1: Circular track

T2: First reciprocating track

T3: Closed track

T4: Second reciprocating track

T5: Grip movement trajectory

T6: Pedal movement trajectory

T7: Toe movement trajectory

T8: Heel movement track

Figure 1 is a three-dimensional diagram of a preferred embodiment of the present invention.

Figure 2 is a three-dimensional diagram of another viewing angle of a preferred embodiment of the present invention corresponding to the state of Figure 1.

Figure 3 is a left view of a preferred embodiment of the present invention corresponding to the state of Figure 1.

Figure 4 is a right view of a preferred embodiment of the present invention corresponding to the state of Figure 1.

Figure 5 is a cross-sectional view along the V-V line in Figure 3.

Figure 6 is a side view of the left half of the motion mechanism in a preferred embodiment of the present invention.

Figure 7 shows the changes in the left half of the motion mechanism in a preferred embodiment of the present invention during a cycle.

Figure 8 shows the motion trajectory of the middle part of the pedal in a preferred embodiment of the present invention.

Figure 9 shows the change in pedal elevation angle when the middle part of the pedal moves along the aforementioned motion trajectory.

Figure 10 shows the movement trajectory of the tip and heel ends of the pedal in a preferred embodiment of the present invention.

FIG. 11A shows a user exercising using a preferred embodiment of the present invention, wherein the left pedal is at a minimum elevation angle.

FIG. 11B is similar to FIG. 11A , but the left pedal is located at a specific position between the minimum elevation position and the highest position, when the left thigh of the aforementioned user is raised to the highest position.

Figure 11C is similar to Figure 11A, but with the left pedal in the highest position.

Figure 11D is similar to Figure 11A, but with the left pedal in the maximum elevation position.

Figure 11E is similar to Figure 11A, but with the left pedal in the lowest position.

Figure 12 shows the leg movements of a person using a recumbent bicycle for leg exercise, with the left thigh raised to the highest angle.

The instructions for the directions of front, back, left, right, up, and down in the following description are basically based on the direction recognition of the user when using the sports equipment of the present invention in a normal manner. For example, the front and back correspond to the direction facing and the direction facing away from the user during exercise, respectively, and the left and right sides correspond to the left and right sides of the user during exercise, respectively. The front and back axis, left and right axis, and up and down axis of the sports equipment defined according to the above principles are fixed and unchanged.

Please refer to Figures 1 to 4. A preferred embodiment of the present invention is a sports equipment that allows users to perform specific leg exercises (and optionally hand exercises) in a sitting position. The aforementioned sports equipment mainly includes a frame 10, a seat assembly 20 disposed at the rear of the frame 10, and a sports mechanism 30 disposed at the front of the frame 10.

The frame 10 can be stably erected on a horizontal support surface (such as the ground) to serve as the installation basis for the seat group 20 and the motion mechanism 30, etc. It mainly has a base 11 that can be placed flat on the support surface, a bracket 12 fixed to the upper front half of the base 11, and a support 13 extending from the top of the bracket 12 to the rear and upper. A console 14 is provided at the top of the support 13. In this example, the rear half of the base 11 forms the rear part of the frame 10, and the rest forms the front part of the frame 10, including the bracket 12 and the support 13, etc.

The seat assembly 20 comprises a reclining seat 21 arranged at the rear half of the base 11, a lifting seat 22 arranged on the reclining seat 21, a seat 23 arranged at the top of the lifting seat 22, a backrest 24 arranged at the rear and upper part of the seat 23, and left and right handles 25 respectively arranged at both sides of the seat 23. The reclining seat 21 can slide horizontally along the front-rear axis at the rear half of the base 11 and be positioned at a selected position within an adjustable range. The lifting seat 22 can slide vertically along the up-down axis on the reclining seat 21 and be positioned at a selected position within an adjustable range. The seat 23 can be used for a user to sit on facing forward, so as to support the buttocks of the user who performs the leg exercise at a fixed position, and the user can adjust the front-rear position and height position of the seat 23 according to personal conditions. The backrest 24 can be used for the back of the user sitting on the seat 23 to lean on, and the user can adjust the angle of the backrest 24 according to personal preference. The left and right handles 25 are fixed relative to the seat 23, and can be grasped by the hands of the user performing the leg exercise to stabilize the body and facilitate the leg force. When the user is ready to sit on the seat 23 or get up from the seat 23, the seat 23 (together with the backrest 24 and the handles 25) can be rotated horizontally 90 degrees from the state shown in Figures 1 and 2 as needed, so that the user (especially the elderly, the larger or the person with limited mobility) can sit or get up on the left or right side of the sports equipment, which is more convenient. In addition, when necessary, the seat assembly 20 can be moved backwards away from the base 11 to allow the wheelchair user to enter the corresponding area from the rear, and after locking the wheels of the wheelchair, the user can directly sit on the wheelchair to perform the aforementioned leg exercises (and the aforementioned hand exercises). The above functions of the seat assembly 20 are all prior arts, for example, the "StepOne ^TM Recumbent Stepper" produced by SCIFIT (one of the corresponding products of the aforementioned U.S. Patent No. 7,713,176) has similar functions, and the detailed structure and operation method thereof are omitted in this article.

The aforementioned motion mechanism 30 can be movably arranged at the front part of the aforementioned frame 10, and mainly comprises a crank set 40, two left and right first connecting rods 50, two left and right second connecting rods 60, two left and right first swing arms 70, two left and right second swing arms 80, two left and right rockers 85 and two left and right pedals 90. The overall structure is symmetrical in left and right directions, and its left half and right half are respectively located to the left and right of the center of the width of the aforementioned frame 10, corresponding to the left and right of the body midline of the user formally sitting on the aforementioned seat 23. Unless the seat assembly 20 is excessively forward, in normal use, all of the above components of the motion mechanism 30 are located in front of the seat 23. Thus, when the user enters and exits between the motion mechanism 30 and the seat 23 before or after exercise (including sitting on the seat 23 and rotating 90 degrees horizontally), it is not necessary to step over any component of the motion mechanism 30, which is more convenient and safe.

The crank assembly 40 is mainly composed of a crankshaft 41 and left and right crank arms 42. The crankshaft 41 is pivotally mounted at a predetermined position near the top of the bracket 12 in a manner that allows it to rotate in situ, and its axis (hereinafter referred to as the first axis) A1 corresponds to the left-right axis, and its left and right ends extend out of the left and right sides of the bracket 12, respectively. Each of the crank arms 42 has an inner end and an outer end. The inner ends of the left and right crank arms 42 are respectively fixed to the left and right ends of the crank shaft 41, which is equivalent to being pivoted to the bracket 12 according to the first axis A1, so that the outer end of each crank arm 42 can be displaced relative to the bracket 10 along a circular track T1 (see Figure 6) around the first axis A1; in addition, the outer ends of the two crank arms 42 are 180 degrees opposite to each other with the first axis A1 as the center, so that when one of them moves upward and forward, the other moves downward and backward at the same angular velocity, and so on.

Each of the aforementioned first connecting rods 50 has a front end and a rear end, and a pair of lugs 51 are provided between the front end and the rear end. The front end of each first connecting rod 50 is pivoted to the outer end of the corresponding aforementioned crank arm 42 through a pivot 52 corresponding to the left and right axes, so that the front end of each first connecting rod 50 forms a ring portion, which is restricted to move on the aforementioned circular track T1 relative to the aforementioned frame 10. In this example, the connection structure between the first connecting rod 50 and the crank arm 42 is similar to a universal joint, which is used to absorb geometric tolerances such as parallelism therebetween.

Each of the second connecting rods 60 has a front end and a rear end, and a support plate 61 (see Figure 2) is fixedly connected to the inner side of the rear half, and a side plate 62 is extended downward from the left and right sides of the support plate 61. The bottom ends of the two side plates 62 are respectively located on the left and right sides of the rear end of the corresponding first connecting rod 50, and are hinged through a hinge 63 corresponding to the left and right axes. In this example, the rear end of each first connecting rod 50 forms a first hinge, and the bottom end of the side plate 62 of each second connecting rod 60 forms a second hinge, and the first hinge moves synchronously with the second hinge.

Each of the first swing arms 70 has a central end (the top end in this example) and a swing end (the bottom end in this example), and the central end is provided with a shaft cylinder 71, and is pivoted at a predetermined position near the top end of the support column 13 according to a second axis A2 corresponding to the left-right axis, so that the swing end can swing back and forth. Similarly, each of the second swing arms 80 also has a central end (the top end in this example) and a swing end (the bottom end in this example), and the central end is provided with a shaft cylinder 81, and is pivoted at a predetermined position near the top end of the support column 13 according to the second axis A2, so that the swing end can swing back and forth. In this example, as a part of the front part of the frame 10, the top of the support 13 is fixedly connected to a suspension seat 15, and another shaft 16 is horizontally penetrated and fixedly connected to the suspension seat 15, as shown in FIG5, and its axis is the second axis A2; the shafts 71 of the left and right first swing arms 70 are respectively connected through a bearing (not shown in the figure) The left and right second swing arms 80 are respectively pivoted on the left and right halves of the shaft 16 through a bearing (not numbered in the figure), relatively far from the hanger 15, and arranged outside the shaft 71 of the first swing arm 70. The swing end of each first swing arm 70 is pivoted to the top end of the lug 51 of the corresponding first connecting rod 50 through a pivot 72 corresponding to the left and right axial directions. The swing end of each second swing arm 80 is pivoted to the front end of the corresponding second connecting rod 60 through a pivot 82 corresponding to the left and right axis. The length of the first swing arm 70 (defined as the vertical distance from the pivot axis of the axial end to the pivot axis of the swing end) is not equal to the length of the second swing arm 80 (defined as above). In this example, the swing radius of the first swing arm 70 is larger than the swing radius of the second swing arm 80.

The left and right two rockers 85 are connected to the left and right second swing arms 80, respectively, so that the left rocker 85 and the left second swing arm 80 will swing synchronously around the second axis A2, and the right rocker 85 and the right second swing arm 80 will swing synchronously around the second axis A2. In this example, each of the rockers 85 has a top end and a bottom end, and the bottom end is fixedly connected to the axis end (top end) of the corresponding second swing arm 80, specifically, to the outer side of the shaft tube 81. The upper half of each of the rockers 85 forms a handle 86 that can be grasped by the user and can be swung forward and backward. When the swing end (bottom end) of the second swing arm 80 on a certain side swings forward, the handle 86 on the same side swings backward accordingly; conversely, when the swing end swings backward, the handle 86 swings forward. In another possible embodiment of the present invention (not shown), the left and right rockers are connected to the left and right first swing arms respectively.

The left and right pedals 90 are respectively disposed on the left and right second connecting rods 60, and are specifically fixed above the support plate 61 on the inner side of the rear half of the second connecting rod 60, and are relatively located between the front lower part and the front of the seat 23, so that the user who formally sits on the seat 23 can step on them respectively. As shown in FIG5 and FIG6, each of the pedals 90 has a relatively forward toe tip 91, a relatively rear heel end 92, and a middle portion 93 between the toe tip 91 and the heel end 92.

All components of the aforementioned motion mechanism 30 are connected to each other, and the movement of any component will force other components to move accordingly. Please refer to Figures 6 and 7 (Note: For the convenience of observation, only the left half of the aforementioned motion mechanism 30 is shown in the figure; the movement trajectories of the corresponding components on the left and right sides of the motion mechanism 30 overlap in side view, for example, the outer end of the crank arm 42 on the right side also moves along the circular trajectory T1 in the figure). Through the above-mentioned component connection relationship of the aforementioned motion mechanism 30, as well as the preset component size and spatial position In the relative relationship, when the front end (the surrounding part) of the first connecting rod 50 rotates one circle along the circular track T1, the top end of the lug 51 of the first connecting rod 50 and the swing end of the first swing arm 70 pivotally connect to each other and reciprocate once along an arc-shaped first reciprocating track T2. At the same time, the rear end (the first pivot part) of the first connecting rod 50 and the first pivot end of the second connecting rod 60 pivotally connect to each other. The part where the bottom end (second pivot part) of the side plate 62 is pivoted to each other will rotate along a slightly elliptical closed track T3. At the same time, the part where the front end of the second connecting rod 60 and the swing end of the second swing arm 80 are pivoted to each other will reciprocate once along an arc-shaped second reciprocating track T4. At the same time, the handle 86 that swings synchronously with the second connecting rod 60 will move along an arc-shaped handle movement track T5. Reciprocating motion once; during the process, the relative angle between the front and rear ends of the aforementioned first connecting rod 50 changes by about 50 degrees (Note: in one cycle, the maximum elevation angle of the front end of the first connecting rod 60 relative to the rear end is about 60 degrees, and the minimum is about 10 degrees), and the relative angle between the front and rear ends of the aforementioned second connecting rod 60 changes by about 30 degrees, which is less than the angle change of the aforementioned first connecting rod 50. In this example, the top end of the lug 51 of each aforementioned first connecting rod 50 forms a first reciprocating portion, which is limited to displacement on the aforementioned first reciprocating track T2 relative to the aforementioned frame 10; the front end of each aforementioned second connecting rod 60 forms a second reciprocating portion, which is limited to displacement on the aforementioned second reciprocating track T4 relative to the aforementioned frame 10.

Thus, when the first connecting rod 50 and the second connecting rod 60 are cyclically displaced or reciprocated along their respective motion trajectories, the middle portion 93 of the pedal 90 is cyclically displaced along a predetermined pedal motion trajectory T6 relative to the frame 10, and the relative angle between the toe tip 91 and the heel end 92 is cyclically changed in a predetermined manner (to be described later). The sports equipment of this embodiment allows the user to perform the aforementioned leg exercise of fitness nature in an active movement manner, that is, the user's feet stepping on the left and right pedals 90 must apply appropriate force to drive each pedal 90 to cyclically displace along the pedal motion trajectory T6, so that the crank set 40 is driven to rotate through the first connecting rod 50. In this example, when the crank assembly 40 rotates, it can drive a flywheel 44 to rotate in place at a faster speed via a belt transmission mechanism 43. In addition, a resistance device 45 is provided next to the flywheel 44 to apply resistance to the flywheel 44, such as an eddy current brake. The user can control the resistance applied to the flywheel 44 by the resistance device 45 through the console 14 to adjust the effort required to drive the pedal 90 to move. According to the implementation selection, the crank set 40 can drive the flywheel 44 to rotate in the same direction regardless of whether it rotates forward (corresponding to the clockwise rotation in FIG. 6 ) or reverse (corresponding to the counterclockwise rotation in FIG. 6 ), that is, there is inertia and resistance when the user drives the pedal 90 to move forward or reverse; or, by installing a one-way bearing between the crank shaft 41 and the belt transmission mechanism 43, the crank set 40 will not drive the flywheel 44 when it rotates reversely, that is, the user only needs to resist the rotational resistance of the flywheel 44 when driving the pedal 90 to move forward, and can decelerate and stop at will.

In another possible embodiment of the present invention, the sports equipment allows the user to perform the aforementioned leg exercise of a rehabilitation nature in a passive movement manner. That is, the user's feet stepping on the aforementioned left and right pedals 90 can be driven by the pedals 90 that automatically move cyclically along the aforementioned pedal movement trajectory T6, so that the legs can perform passive joint exercises (passive ROM exercise) of the knee joint and hip joint. In practice, for example, a motor can be used to replace the aforementioned flywheel 44, and its output torque can drive the aforementioned crank set 40 to rotate at a slower speed through the aforementioned belt transmission mechanism 43 in the reverse direction, driving each pedal 90 to move cyclically along the aforementioned pedal movement trajectory T6. In another possible embodiment of the present invention, the sports equipment can be selected to perform the aforementioned leg exercise in an active movement or a passive movement manner. Among them, each of the aforementioned pedals 90 may be provided with a strap to appropriately restrain the user's feet.

Because the first axis A1 and the second axis A2 between the aforementioned motion mechanism 30 and the aforementioned frame 10 both correspond to the left-right axis of the frame 10, the aforementioned circular track T1, the aforementioned first reciprocating track T2, the aforementioned closed track T3, the aforementioned second reciprocating track T4, the aforementioned handle motion track T5 and the aforementioned pedal motion track T6 are respectively located on a lead plane defined by the up-down axis and the front-back axis of the frame 10. In other words, the various parts of the aforementioned motion mechanism 30 will only move up and down and forward and backward, and will not move left and right. As shown in FIG8 , the pedal motion track T6 is slightly oval-shaped, and has a highest position P1, a lowest position P2, a frontmost position P3 and a rearmost position P4 on its closed path. In this example, the height difference between the highest position P1 and the lowest position P2 in the up-down axis is nearly 17 centimeters, and the front-to-back difference between the frontmost position P3 and the rearmost position P4 in the front-to-back axis is nearly 30 centimeters. The height difference is smaller than the front-to-back difference. Moreover, the pedal motion track T6 has a long axis L (Note: the long axis is defined as the connection direction of the two farthest points on the track). The long axis L has a front end (left end in the figure) and a rear end (right end in the figure). The front end is higher than the rear end, but the relative elevation angle is less than 45 degrees, which is about 14 degrees in this example. In addition, the stroke length of the aforementioned pedal motion trajectory T6 from the aforementioned last position P4 to the aforementioned highest position P1 is greater than the stroke length from the aforementioned highest position P1 to the aforementioned front and bottom to the aforementioned front position P3; the stroke length of the aforementioned pedal motion trajectory T6 from the aforementioned front position P3 to the aforementioned lowest position P2 is greater than the stroke length from the aforementioned lowest position P2 to the aforementioned last position P4.

Since the left and right pedals 90 are respectively arranged on the left and right second connecting rods 60, when the middle portion 93 of each pedal 90 cyclically displaces along the pedal motion trajectory T6, the relative angles of the front and rear ends thereof will be continuously changed along with the corresponding second connecting rod 60. Each pedal 90 always keeps the tip end 91 higher than the heel end 92, and as shown in FIG9 , during the cycle of the middle portion 93 of the pedal 90 rotating one circle along the pedal motion trajectory T6, the elevation angle of the tip end 91 relative to the heel end 92 will gradually increase and decrease. Specifically, the pedal movement trajectory T6 has a maximum elevation angle position P5 and a minimum elevation angle position P6, wherein the maximum elevation angle position P5 is located within the range from the highest position P1 to the lowest position P2 and passing through the front position P3 on the way, and correspondingly, the minimum elevation angle position P6 is located within the range from the lowest position P2 to the highest position P1 and passing through the rear position P4 on the way; when the middle portion 93 of the pedal 90 is located at the maximum elevation angle position P5, the elevation angle of the toe end 91 of the pedal 90 relative to the heel end 92 is the maximum elevation angle within the possible range of variation. The maximum value (hereinafter referred to as the maximum elevation angle) is greater than 30 degrees and less than 60 degrees, and is approximately 48 degrees in this example; correspondingly, when the middle portion 93 of the pedal 90 is located at the aforementioned minimum elevation angle position P6, the elevation angle of the tip end 91 of the pedal 90 relative to the heel end 92 is the minimum value within the possible variation range (hereinafter referred to as the minimum elevation angle), and is greater than 0 degrees and less than 30 degrees, and is approximately 18 degrees in this example; the difference between the aforementioned maximum elevation angle and the aforementioned minimum elevation angle is greater than 15 degrees and less than 45 degrees, and is approximately 30 degrees in this example, which is equal to the angle variation of the aforementioned second connecting rod 60 relative to the aforementioned frame 10. It can be imagined that in the process of the middle part 93 of the pedal 90 moving from the aforementioned maximum elevation angle position P5 to the aforementioned minimum elevation angle position P6 along the aforementioned pedal movement trajectory T6, the elevation angle of the aforementioned toe tip 91 relative to the aforementioned heel end 92 gradually decreases; in the process of the middle part 93 moving from the aforementioned minimum elevation angle position P6 to the aforementioned maximum elevation angle position P5 along the aforementioned pedal movement trajectory T6, the elevation angle of the aforementioned toe tip 91 relative to the aforementioned heel end 92 gradually increases. By the way, when the pedal 90 is at the aforementioned highest position P1, the elevation angle is about 36 degrees, at the aforementioned front position P3, the elevation angle is about 47 degrees, at the aforementioned lowest position P2, the elevation angle is about 36 degrees, and at the aforementioned last position P4, the elevation angle is about 19 degrees.

Preferably, the travel length between the maximum elevation angle position P5 and the frontmost position P3 is shorter than the travel length between the maximum elevation angle position P5 and the highest position P1, and is also shorter than the travel length between the maximum elevation angle position P5 and the lowest position P2. In short, the maximum elevation angle position P5 is relatively close to the frontmost position P3 and relatively far from the highest position P1 and the lowest position P2. Moreover, the travel length between the minimum elevation angle position P6 and the rearmost position P4 is shorter than the travel length between the minimum elevation angle position P6 and the highest position P1, and is also shorter than the travel length between the minimum elevation angle position P6 and the lowest position P2. In short, the minimum elevation angle position P6 is relatively close to the rearmost position P4 and relatively far from the highest position P1 and the lowest position P2. In this example, the maximum elevation angle position P5 is between the frontmost position P3 and the lowest position P2, the minimum elevation angle position P6 is between the rearmost position P4 and the highest position P1, and the path from the minimum elevation angle position P6 to the highest position P1 is roughly a straight line.

Because the pedal 90 continuously changes the relative angles between its front and rear ends during the cyclic displacement, the shapes of the movement trajectories of the aforementioned toe tip 91 and the aforementioned heel end 92 are different. As shown in FIG10 , the aforementioned toe tip 91 cyclically displaces along a toe movement trajectory T7 with a relatively flat and long outline relative to the aforementioned frame 10, and the aforementioned heel end 92 cyclically displaces along a heel movement trajectory T8 with a relatively spherical outline relative to the aforementioned frame 10. The difference in shape between the aforementioned toe motion trajectory T7 and the aforementioned heel motion trajectory T8 reflects the change in the pedal 90 elevation angle from the aforementioned maximum elevation angle position P5 to the aforementioned minimum elevation angle position P6, and from the aforementioned minimum elevation angle position P6 to the aforementioned maximum elevation angle position P5. Similar to the aforementioned pedal motion trajectory T6, the front-to-back difference of the aforementioned toe motion trajectory T7 and the aforementioned heel motion trajectory T8 is greater than the height difference, and the stroke length from the last position of the trajectory to the front and top to the highest position is greater than the stroke length from the highest position to the front and bottom to the front position.

Please refer to FIG. 6 again. In order to generate the aforementioned pedal motion trajectory T6 or a similar shape thereof, and the aforementioned pedal elevation angle variation pattern, in this example, the first reciprocating portion of the aforementioned first connecting rod 50 (i.e., the top end of the aforementioned lug 51) is located between the aforementioned surrounding portion (front end) and the aforementioned first pivot portion (rear end), and the aforementioned first reciprocating trajectory T2 is relatively located below and behind the center of the aforementioned circular trajectory T1. It has a relatively high front end and a relatively low rear end, so that the aforementioned closed track T3 has a long axis (defined as above), and the aforementioned long axis has a relatively high front end and a relatively low rear end; at the same time, the second reciprocating portion (front end) of the aforementioned second connecting rod 60 is located above and in front of the aforementioned first and second pivot parts, and the aforementioned second reciprocating track T4 also has a relatively high front end and a relatively low rear end. Furthermore, the present embodiment utilizes the swinging ends (bottom ends) of the first swing arm 70 and the second swing arm 80, which are coaxial but of different lengths, to guide the first reciprocating portion of the first connecting rod 50 and the second reciprocating portion of the second connecting rod 60, respectively. When viewed from the side, the first reciprocating track T2 enters the closed range of at least one of the circular track T1 and the closed track T3 (the latter in this example), and the second reciprocating track T4 also enters the closed range of at least one of the circular track T1 and the closed track T3 (the former in this example). Thus, the motion mechanism 30 can provide a larger or sufficient pedal motion stroke in a smaller space with a more compact structure. In another possible embodiment of the present invention (not shown), the first reciprocating portion of the first connecting rod and/or the second reciprocating portion of the second connecting rod are provided with rollers, which can slide reciprocatingly along the guide rails preset on the frame, and are also restricted to move on a first reciprocating track and/or a second reciprocating track. This structure can also generate basically the same motion track and elevation angle change.

The following describes the actions and effects of the user performing the aforementioned leg exercises (and the aforementioned hand exercises) using the sports equipment of the preferred embodiment. As shown in Figures 11A to 11E, when performing the exercise, the user sits on the aforementioned seat 23 facing forward (Note: the seat 23 in the figure is positioned in a position suitable for the user in the figure; if the seat 23 is in an inappropriate position, the user may not be able to perform the following actions correctly and comfortably), the left foot and the right foot step on the aforementioned left and right pedals 90 respectively, and the left hand and the right hand usually grasp the aforementioned left and right handles 86 respectively, and the legs and hands work together to drive each pedal 90 and each handle 86 to cyclically move along the aforementioned pedal movement trajectory T6 and reciprocate along the aforementioned handle movement trajectory T5. Based on the linkage mode of the components of the aforementioned motion mechanism 30, generally speaking, for example, when the left pedal 90 moves forward, the left handle 86 will move backward, and at the same time, the right pedal 90 moves backward and the right handle 86 moves forward, similar to the limb balance mode of the human body when walking or running. However, the user can also choose to grasp the left and right handles 25 on both sides of the aforementioned seat 23 with both hands and only perform leg exercises. In another possible embodiment of the present invention (not shown), the sports equipment does not provide the function of hand exercise, for example, the aforementioned joystick 85 is removed, and a fixed handle group is set near the corresponding position.

Generally speaking, the user will apply force to drive each pedal 90 to move forward along the aforementioned pedal movement trajectory T6, that is, the pedal 90 will move from the aforementioned highest position P1 to the aforementioned front position P3 to the aforementioned lowest position P2, and then from the aforementioned lowest position P2 to the aforementioned last position P4 back to the aforementioned highest position P1, and so on and so forth. Of course, the user may also apply force to drive each pedal 90 to move in the opposite direction. The sequence of Figures 11A, 11B, 11C, 11D, and 11E (and then back to Figure 11A) corresponds to the aforementioned process of forward displacement, wherein the left pedal 90 in Figure 11A is located at the aforementioned minimum elevation angle position P6 on the aforementioned pedal movement trajectory T6, and correspondingly, the left pedal 90 in Figure 11D is located at the aforementioned maximum elevation angle position P5 on the pedal movement trajectory T6, that is to say, the aforementioned left pedal 90 is located from Figure 11A to Figure 11B. As the position shown in FIG11A moves along the pedal movement trajectory T6 through the positions shown in FIG11B and FIG11C to the position shown in FIG11D, the elevation angle of the toe of the pedal 90 relative to the heel end will gradually increase; on the contrary, as the left pedal 90 moves from the position shown in FIG11D along the pedal movement trajectory T6 through the position shown in FIG11E to the position shown in FIG11A, the elevation angle of the toe of the pedal 90 relative to the heel end will gradually decrease.

In combination with the user's leg movements, in a general or typical use state, when the user's left foot is flat on the left pedal 90 at the aforementioned minimum elevation angle position P6 as shown in FIG. 11A , the left thigh is usually slightly raised (the elevation angle in the figure is about 12 degrees), and there is usually a sharp angle between the left calf and the left thigh (about 80 degrees in the figure); when the user's left foot is flat on the left pedal 90 at the aforementioned highest position P1 as shown in FIG. 11C , There is usually a blunt angle between the left calf and the left thigh (about 120 degrees in the figure); when the user's left foot moves forward and upward along the left pedal 90 from the aforementioned minimum elevation position P6 to the aforementioned highest position P1, it will pass through a specific position as shown in FIG. 11B. At this time, the user's left thigh and left knee are raised to the highest height in the whole process (the elevation angle in the figure is about 15 degrees), and the left calf and the left thigh are roughly at a right angle; it is worth noting that It is noted that, in the stage from FIG. 11B to FIG. 11C , the user's left thigh and left knee begin to gradually lower, but the left foot continues to move forward and upward along with the left pedal 90, so that the left calf swings upward relative to the left knee; after passing the aforementioned highest position, the left pedal 90 continues to move away from the aforementioned seat 23, which is equivalent to the user's left foot continuing to move away from the buttocks, so the user's left leg will continue to extend, and the elevation angle of the left foot will continue to increase until the left pedal 90 reaches the highest position. The board 90 reaches the aforementioned maximum elevation angle position P5, near which the user's left leg is nearly fully extended, and the left thigh and left knee drop to the lowest height in the entire process (the elevation angle in FIG. 11D is about 12 degrees); then, the user's left leg begins to bend, the left thigh and left knee begin to rise, and the elevation angle of the left foot gradually decreases until the left pedal 90 returns to the aforementioned minimum elevation angle position P6 along the pedal movement trajectory T6, and this cycle repeats. Even if the user's hands do not push or pull the aforementioned handle 86, because the left and right pedals 90 are roughly maintained at relative positions on the pedal movement trajectory T6, at any time at least one side can be driven by the user's force, and the aforementioned flywheel 44 provides a motion inertia, so each pedal 90 can be smoothly and smoothly cycled. The above leg movements also apply to the passive movements mentioned above.

The above-mentioned sports equipment of the present invention includes at least the following advantages or features:

1. When users perform the aforementioned leg exercises, the degree of thigh lifting and knee flexion is relatively mild, while there is sufficient foot movement range and leg activity, with low exercise difficulty and high exercise effect.

Second, the user's leg movements are natural and smooth when performing the aforementioned leg exercises, and the movements are different from the monotonous repetitive extension and flexion in the previous technology, and the feet and knees always rise and fall together.

3. The structure of the aforementioned exercise mechanism is compact, and when the user is preparing to exercise and wants to sit on the seat, or when the user wants to leave the seat after exercise, he does not need to step over any components of the exercise mechanism, which is more convenient and safer.

4. While performing the aforementioned leg exercises, users can choose to perform coordinated hand exercises to improve the exercise effect.

10: Frame

11: Base

12: Bracket

13: Pillar

14: Console

15: Hanging seat

20: Seat set

21: Enter and leave seats

22: Lifting seat

23: Seat

24: Chair back

25:Handle

30:Sports organizations

40: Crankset

41: Crankshaft

42: Crank arm

43: Belt drive mechanism

44: Flywheel

50: First connecting rod

51: Lug

52: pivot

60: Second connecting rod

62: Side panels

63: pivot

70: First swing arm

72: pivot

80: Second swing arm

82: pivot

85: Rocker

86: Grip

90: Pedal

Claims (10)

A sports equipment that allows a user to perform leg exercises in a sitting position, comprising: A frame; A seat, provided on the frame, for supporting the buttocks of the user at a fixed position; A motion mechanism is movably arranged on the frame, and has left and right pedals located in front of the seat for the user to step on respectively, each of the pedals has a toe tip, a heel tip, and a middle portion between the toe tip and the heel tip; when the leg movement is performed, based on the control of the motion mechanism, the middle portion of each pedal is cyclically displaced along a predetermined pedal movement trajectory relative to the frame, and the relative angle between the toe tip and the heel tip changes cyclically in a predetermined manner; the pedal movement trajectory is located on a lead plane defined by the up-down axis and the front-rear axis of the frame, and has a highest position, a lowest position, a frontmost position, and a rearmost position on its closed path. , a maximum elevation angle position and a minimum elevation angle position, wherein the maximum elevation angle position is located within the travel from the highest position to the lowest position and passing through the front position, and the minimum elevation angle position is located within the travel from the lowest position to the highest position and passing through the rear position; each of the pedals always keeps the toe tip higher than the heel end, and in the process of the middle portion moving from the maximum elevation angle position to the minimum elevation angle position along the pedal movement trajectory, the elevation angle of the toe tip relative to the heel end gradually decreases, and in the process of the middle portion moving from the minimum elevation angle position to the maximum elevation angle position along the pedal movement trajectory, the elevation angle of the toe tip relative to the heel end gradually increases. As claimed in claim 1, the sports equipment that allows users to perform leg exercises in a sitting position, wherein the length of the pedal movement track from the aforementioned last position to the front and top to the aforementioned highest position is greater than the length of the pedal movement track from the aforementioned highest position to the front and bottom to the aforementioned front position. As claimed in claim 1, the sports equipment that allows users to perform leg exercises in a sitting position, wherein the height difference between the highest position and the lowest position of the pedal movement track in the vertical axis is smaller than the front-to-back difference between the frontmost position and the rearmost position in the front-to-back axis, and the pedal movement track has a long axis, and the long axis has a relatively high front end and a relatively low rear end. As claimed in claim 1, the sports equipment that allows users to perform leg exercises in a sitting position, wherein the travel length between the aforementioned maximum elevation angle position and the aforementioned frontmost position of the aforementioned pedal movement trajectory is shorter than the travel length between the aforementioned maximum elevation angle position and the aforementioned highest position, and also shorter than the travel length between the aforementioned maximum elevation angle position and the aforementioned lowest position; the travel length between the aforementioned minimum elevation angle position and the aforementioned last position of the aforementioned pedal movement trajectory is shorter than the travel length between the aforementioned minimum elevation angle position and the aforementioned highest position, and also shorter than the travel length between the aforementioned minimum elevation angle position and the aforementioned lowest position. As claimed in claim 1, the sports equipment that allows the user to perform leg exercises in a sitting position, wherein the maximum elevation angle position of the pedal movement trajectory is between the frontmost position and the lowest position, and the minimum elevation angle position is between the rearmost position and the highest position. As claimed in claim 1, the sports equipment allows the user to perform leg exercises in a sitting position, wherein the aforementioned sports mechanism also has two left and right first connecting rods and two left and right second connecting rods, all of which are located in front of the aforementioned seat; each of the aforementioned first connecting rods has a surrounding portion, a first reciprocating portion and a first pivot portion, the aforementioned surrounding portion is restricted to move on a circular track relative to the aforementioned frame, and the aforementioned first reciprocating portion is restricted to move on a first reciprocating track relative to the aforementioned frame; each of the aforementioned second connecting rods has a second reciprocating portion and a second pivot portion, the aforementioned second reciprocating portion is restricted to move on a second reciprocating track relative to the aforementioned frame, and the aforementioned second reciprocating portion is restricted to move on a second reciprocating track relative to the aforementioned frame. The second hinge is hinged to the corresponding first hinge of the first connecting rod; while the annular portion of the first connecting rod rotates one circle along the circular track, the first reciprocating portion of the first connecting rod and the second reciprocating portion of the second connecting rod reciprocate once along the first reciprocating track and the second reciprocating track respectively, and the first hinge of the first connecting rod and the second hinge of the second connecting rod rotate one circle along the closed track, during which the change in the relative angle of the two ends of the second connecting rod is less than the change in the relative angle of the two ends of the first connecting rod; the left and right pedals are respectively arranged on the left and right second connecting rods. As claimed in claim 6, the sports equipment that allows users to perform leg exercises in a sitting position, wherein each of the aforementioned first connecting rods has a front end and a rear end, the aforementioned surrounding portion is at the aforementioned front end, the aforementioned first pivot portion is at the aforementioned rear end, and the aforementioned first reciprocating portion is between the aforementioned front end and the aforementioned rear end; each of the aforementioned second connecting rods has a front end and a rear end, the aforementioned second reciprocating portion is at the aforementioned front end, and the aforementioned second pivot portion is behind the aforementioned second reciprocating portion; each of the aforementioned pedals is provided at the rear half of the corresponding aforementioned second connecting rod. As claimed in claim 7, the sports equipment allows users to perform leg exercises in a sitting position, wherein the first reciprocating track has a relatively high front end and a relatively low rear end; the closed track has a long axis, and the long axis has a relatively high front end and a relatively low rear end; the second reciprocating portion of each second connecting rod is higher than the second pivot portion; the second reciprocating track has a relatively high front end and a relatively low rear end; in side view, the first reciprocating track enters the closed range of at least one of the circular track and the closed track, and the second reciprocating track also enters the closed range of at least one of the circular track and the closed track. As claimed in claim 6, the sports equipment allows the user to perform leg exercises in a sitting position, wherein the aforementioned sports mechanism also has left and right crank arms, left and right first swing arms and left and right second swing arms all located in front of the aforementioned seat; each of the aforementioned crank arms has an inner end and an outer end, the inner ends of the aforementioned left and right crank arms are pivoted together on the aforementioned frame according to a first axis, and the outer ends of the aforementioned left and right crank arms are 180 degrees opposite to each other with the aforementioned first axis as the center, and are respectively pivoted to the aforementioned surrounding portions of the aforementioned left and right first connecting rods; each of the aforementioned first swing arms has an axis end and an outer end Swing end, the axis ends of the left and right first swing arms are respectively pivoted to the frame according to a second axis, and the swing ends of the left and right first swing arms are respectively pivoted to the first reciprocating parts of the left and right first connecting rods; each of the second swing arms has an axis end and a swing end, the axis ends of the left and right second swing arms are respectively pivoted to the frame according to the second axis, and the swing ends of the left and right second swing arms are respectively pivoted to the second reciprocating parts of the left and right second connecting rods; the first axis and the second axis both correspond to the left and right axis of the frame. As claimed in claim 9, the sports equipment allows the user to perform leg exercises in a sitting position, wherein the sports mechanism further comprises left and right rockers, the left and right rockers are respectively connected to the left and right first swing arms or respectively connected to the left and right second swing arms; each of the rockers has a handle for the user to grasp; the swing ends of each of the first swing arms and the swing ends of each of the second swing arms are lower than the second axis, and each of the handles is higher than the second axis.