EXERCISE DEVICE

Abstract

An exercise device, endlessly pedaled by a user, includes a base unit, a training unit connected to the base unit, a detection unit arranged on the training unit, an analyzing and processing module coupled to the detection unit, and an electrical auxiliary unit coupled to the analyzing and processing module. The electrical auxiliary unit can assist in driving the training unit. The detection unit detects the usage state of the detection unit to generate a detection signal. When a user applies force to the training unit to exercise, the analyzing and processing module will determine that the assistance of external force is required according to the detection signal and transmit an electrical auxiliary signal to the electrical auxiliary unit if the exercise stagnates due to insufficient force. The electrical auxiliary unit assists in driving the training unit to help the user complete exercise according to the electrical auxiliary signal.

Description

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to an exercise device, particularly to an exercise device with timely assistive functions.

Description of the Related Art

In the past, exercise devices include flywheels that are common on the market and treadmills in rehabilitation clinics. For example, Taiwan Invention Patents No. I300718 and No. I548409 and Taiwan Utility Model Patent No. M581485 disclosed cyclically pedaling exercise equipment that is provided to a user for performing bicycle-like exercise to achieve fitness effects. Generally speaking, most of the foregoing exercise devices can provide users with increased resistance during exercise using manual or electric methods, thereby increasing the user's exercise intensity.

The past exercise devices can only provide users with a certain degree of muscle strength and coordination to complete cyclically pedaling exercise. However, users who have suffered a stroke or cerebral palsy or have experienced major accidents may be in complex situations such as the insufficient muscle strength in one limb or bilateral coordination disorders, making it difficult to use the foregoing exercise device to complete the cyclically pedaling exercise.

SUMMARY OF THE INVENTION

The present invention provides an exercise device with assistive functions to help users perform pedaling exercise.

The exercise device of the present invention includes a base unit, a training unit, a detection unit, an analyzing and processing module, and an electrical auxiliary unit. The training unit is arranged on the base unit. The detection unit includes a detector arranged on the corresponding position of the training unit and at least one object to be detected. The analyzing and processing module is coupled to the detector of the detection unit. The electrical auxiliary unit, coupled to the analyzing and processing module, assists in driving the training unit. A user applies force to the training unit to perform a corresponding action (e.g., pedaling exercise). The detector detects the state of the object to be detected relative to the detector when the training unit performs the action and generates a detection signal. The analyzing and processing module receives the detection signal and determines that the training unit is in a normally-used state or an assistance-required state according to the detection signal. The analyzing and processing module generates an electrical auxiliary signal and transmits it to the electrical auxiliary unit in an assistance-required state. The electrical auxiliary unit assists in driving the training unit according to the electrical auxiliary signal and helps the user to perform pedaling actions.

The effect of the present invention can help the user complete pedaling exercise when the user slows down or stagnates the pedaling exercise. As a result, the effects of displacement and exercise can be produced to improve the user's willingness and motivation to exercise, so that the purpose of the present invention can be achieved.

Below, the embodiments are described in detail in cooperation with the drawings to make easily understood the technical contents, characteristics and accomplishments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram illustrating an exercise device where a based unit is omitted of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of another orientation of the present invention.

FIG. 4 is a schematic diagram illustrating of the internal structure of a training unit encircled by a dashed frame in FIG. 2, wherein the side casing and one of the wheels of the rear wheel set of the training unit are disassembled;

FIG. 5 is an enlarged view of the structure encircled by a dashed frame in FIG. 3;

FIG. 6 is a perspective view of a fixing frame of the present invention;

FIG. 7 is a perspective view of an exercise device on a fixing frame of the present invention;

FIG. 8 is an experimental chart of the present invention;

FIG. 9 is another experimental chart of the present invention; and

FIG. 10 is an experimental comparison table of FIGS. 8 and 9 of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings.

Referring to FIGS. 1 and 2, an exercise device of the present invention is provided to a user for performing pedaling exercise. The exercise device includes a base unit 1, a training unit 2, a detection unit 3, an analyzing and processing module 4, and an electrical auxiliary unit 5. The training unit 2 is arranged on the base unit 1. The detection unit 3 is arranged on the training unit 2. The analyzing and processing module 4 is arranged on the base unit 1 and coupled to a detector 31. The electrical auxiliary unit 5 is arranged on the base unit 1 and connected to the training unit 2. The electrical auxiliary unit 5 is configured to timely assist in driving the training unit 2 and coupled to the analyzing and processing module 4.

When the user applies force to the training unit 2 to perform exercise, the detector 31 detects the state of the object 34 to be detected relative to the detector 31 to generate a detection signal. The analyzing and processing module 4 receives the detection signal and determines that the training unit 2 is in a normally-used state or an assistance-required state according to the detection signal. In the normal state, the user uses the training unit 2 to complete cyclically pedaling exercise. In the assistance-required state, the pedaling force is insufficient at a certain angle or multiple angles of the cyclically pedaling exercise such that the speed slows down or becomes zero. The analyzing and processing module 4 will generate an electrical auxiliary signal and transmits the electrical auxiliary signal to the electrical auxiliary unit 5 when determining that the training unit 2 is in the assistance-required state. The electrical auxiliary unit 5 assists in driving the training unit 2 according to the electrical auxiliary signal to assist the user in performing pedaling exercise, thereby completing a pedaling cycle.

The effect of the present invention can be used for users to perform pedaling exercise, especially when the user is a patient with lower limbs injured. When performing pedaling exercise, the pedaling action may have insufficient force at a certain pedaling angle, which easily causes the pedaling exercise to stagnate. The electrical auxiliary unit 5 is used to assist in driving the training unit 2 to help the user complete the pedaling exercise, thereby achieving the purpose of the present invention.

As illustrated in FIGS. 2 and 3, in some embodiments, the base unit 1 includes a main body 11, a post 12 connected to the main body 11, a cushion 13 arranged on the post 12, a vertical rod 14 connected to the main body 11, and a handle 15 arranged at one end of the vertical rod 14.

Further explanation is that the height of the cushion 13 is adaptable according to requirements. When performing pedaling exercise, the user can sit on the cushion 13 or leave the cushion 13 to perform exercise in a standing position. In addition, the cushion 13 can also be installed or removed according to usage requirements.

In some embodiments, as illustrated in FIGS. 2 and 4, the training unit 2 includes a transmission member 20 arranged on the main body 11, a first force-bearing member 21 arranged on one side of the transmission member 20, a first pedal 22 arranged on the first force-bearing member 21, a second force-bearing member 23 arranged on another side of the main body 11, a second pedal 24 arranged on the second force-bearing member 23, a rear wheel set 25 driven by the first force-bearing member 21 and the second force-bearing member 23 through the transmission member 20, and a front wheel set 26 connected to the electrical auxiliary unit 5. The transmission member 20 is a pulley assembly. Therefore, when the first pedal 22 or the second pedal 24 is pressed down, the transmission member 20 will rotate the rear wheel set 25. On the contrary, when the rear wheel set 25 rotates, the transmission member 20 will also rotate the first pedal 22 and the second pedal 24. In addition, the front wheel set 26 will rotate with the rear wheel set 25 and the electrical auxiliary unit 5 assists in driving the front wheel set 26 in the assistance-required state. At this time, when the rear wheel set 25 rotates, the transmission member 20 also rotates the first pedal 22 and the second pedal 24, thereby helping the user's lower limbs exercise. Another end of the vertical rod 14 is connected to the front wheel set 26, so that the user can rotate the front wheel set 26 left and right by operating the handle 15.

In the present invention, please refer to FIGS. 2 and 3. The structures of the rear wheel set 25 and the front wheel set 26 are composed of two wheels respectively connected at both ends of an axle. In some embodiments, the front wheel set 26 is an electric wheel (or a hub motor). Please also refer to FIG. 4. The transmission member 20 includes a first transmission pulley 200 connected to the first force-bearing member 21 and the second force-bearing member 23 and a second transmission pulley 202 connected to the rear wheel set 26. The first pulley 200 and the second pulley 202 are connected by a transmission belt 204 and commonly driven. Furthermore, at least one pressure wheel 206 is arranged outside the transmission belt 204 between the first pulley 200 and the second pulley 202 and configured to abut the transmission belt 204 against the first pulley 200 and the second pulley 202. Thus, the transmission belt 204 can drive the first transmission pulley 200 and the second transmission pulley 202.

Refer to FIGS. 2 and 3. In some embodiments, in order to enable the user to simulate walking and pedaling movements, the training unit 2 further includes a first connecting rod 211 rotationally connected to the first force-bearing member 21, a second connecting rod 231 rotationally connected to the second force-bearing member 23, a first auxiliary rod 212 rotationally connected to the first connecting rod 211, and a second auxiliary rod 232 rotationally connected to the second connecting rod 231. Another end of the first auxiliary rod 212 and another end of the second auxiliary rod 232 are rotationally connected between two ends of the vertical rod 14 of the base unit 1. The first pedal 22 is arranged on the first connecting rod 211. The second pedal 24 is arranged on second connecting rod 231.

Refer to FIG. 3 and FIG. 5. The detection unit 3 includes a detector 31 arranged on the transmission member 20 of the training unit 2, a disc 32 arranged on the first force-bearing member 21 of the training unit 2, a movable fixing element 33 (e.g., a butterfly bolt) configured to fix or unfix the disk 32 to the first force-bearing member 21, and a plurality of objects 34 to be detected spaced at uniform angles on the disc 32. By driving the movable fixing element 33, the disk 32 can be rotated to adjust the position of the object 34 to be detected relative to the detector 31 to fall within the angle range to be detected. Alternatively, increasing or decreasing the number of the objects 34 to be detected changes the detecting angle range of the detection unit 3.

In some embodiments, the detector 31 is a magnetic proximity sensor, namely a Hall sensor. For example, the electromagnetic Hall sensors MS08-10N and MS08-10P of Yang Ming Electric can be used. Alternatively, magnetic proximity sensors of different models or brands are included within the scope of the present invention. For example, in some embodiments, the objects 34 to be detected are magnets and the number of the objects 34 to be detected is four. The objects 34 to be detected are spaced at uniform angles. Each angle has 30 degrees. The total angle has 90 degrees. That is to say, when the user cyclically pedals the training unit 2, the detection unit 3 can detect a range of about 90 degrees of the trajectory. The number of the objects 34 to be detected can be increased or decreased according to requirements. The angle between the objects 34 to be detected can also be adaptable according to requirements. The coverage range of the objects 34 to be detected can also be increased or decreased according to requirements. For example, the coverage range of the objects 34 to be detected has 360 degrees, which is included within the scope of the present invention.

In some embodiments, the objects 34 to be detected can also be a plurality of electromagnets. The effect of detecting a specific range is achieved by turning on or off a part of the objects 34 to be detected. In other words, the objects 34 to be detected can be turned on or off, which is equivalent to the objects 34 to be detected adjustably arranged on the training unit 2.

It is worthy noted that in some embodiments, the power suppling manner of the detector 31 can be similar to that of an electric brush, so that the positions of the detector 31 and the object 34 to be detected 34 can also be interchanged. In addition, the objects 34 to be detected can be holes on the disc 32. The detector 31 is a photointerrupter arranged around the disc 32. When each hole passes through the photointerrupter, a detection signal is generated. The analyzing and processing module 4 determines that the training unit 2 is in a normal state or an assistance-required state according to a time interval when the detection signal is received.

Referring to FIG. 1, the analyzing and processing module 4 is an Arduino development board. The electrical auxiliary unit 5, coupled to the analyzing and processing module 4, can assist in driving the front wheel set 26 of the training unit 2. In some embodiments, the electrical auxiliary unit 5 includes a signal receiver 51, a rechargeable battery 52, and an electric motor 53 for driving the front wheel set 26. The signal receiver 51 is a microcontroller. The signal receiver 51 receives the electrical auxiliary signal, drives the electric motor 53 according to the electrical auxiliary signal, and assists in driving the front wheel set 26 of the training unit 2. The rechargeable battery 52, coupled to the electric motor 53, supplies power to the electric motor 53 and all electrical components of the exercise device. The electrical components include, but are not limited to, the analyzing and processing module 4, the detection unit 3, etc.

In some embodiments, when the user's left and right lower limbs respectively apply force to the first pedal 22 and the second pedal 24 to perform pedaling exercise relative to the base unit 1, the detector 31 detects the position state of the object 34 to be detected relative to the detector 31 to generate a detection signal. The analyzing and processing module 4 receives and analyzes the detection signal to generate an electrical auxiliary signal and transmit the electrical auxiliary signal to the electrical auxiliary unit 5. For example, a user who has suffered a stroke may have insufficient muscle strength or coordination on one side, such that the user stagnates exercise in a specific angle range. The detection unit 3 can rotate the disk 32 to detect the specific angle range. When the rotation speed becomes too slow or zero due to insufficient muscle strength within the detection range, the analyzing and processing module 4 analyzes the detection signal to determine that assistance should be provided and thus transmits the electrical auxiliary signal to the electrical auxiliary unit 5. The electric auxiliary unit 5 drives the electric motor 53 according to the electrical auxiliary signal to assist in rotating the front wheel set 26, thereby assisting the user in performing complete cyclically pedaling exercise to pass a specific angle range.

Further explanation is that when the electrical auxiliary unit 5 helps the user pass through a specific angle range, the user can complete the exercise in the remaining angle range without stagnation. Therefore, the detection unit 3 does not need to output the detection signal and the analyzing and processing module does not need to analyze the detection signal within the remaining angle range, thereby achieving the purpose of saving the power of the rechargeable battery 52.

More specifically, the front wheel set 26 is driven and rotated by the electrical auxiliary unit 5. Alternatively, the front wheel set 26 rotates with the rear wheel set 25. The rear wheel set 25 is mainly driven by the user pedaling the first force-bearing member 21 and the second force-bearing member 23. When the user needs assistance, the electrical auxiliary unit 5 assists in driving the front wheel set 26 and the rear wheel set 25 rotates with the front wheel set 26. Furthermore, the rear wheel set 25 rotates with the front wheel set 26 to drive the transmission member of the training unit 2. That is to say, the transmission member 20 will respectively drive the first pedal 22 and the second pedal 24 through the first force-bearing member 21 and the second force-bearing member 23. The user's left and right feet respectively move with the first pedal 22 and the second pedal 24 such that the left and right lower limbs move together. As a result, the left and right lower limbs complete a pedaling motion.

In conclusion, the user can also use the exercise device to exercise outdoors or in open indoor spaces. As the user pedals, the exercise device will move forward, move backward, turn, etc. The movement can enrich the visual, auditory and other experiences during exercise, thereby improving exercise effects.

Some users cannot or cannot easily walk to the outdoor space, or do not have an open indoor space to use the exercise device. Refer to FIGS. 6 and 7. In some embodiments, the exercise device also includes a fixing frame 7 where the front wheel set 26 and the rear wheel set 25 of the training unit 2 are arranged. The front wheel set 26 and the rear wheel set 25 separate from the ground. The fixing frame 7 includes a front roller set 71 where the front wheel set 26 of the training unit 2 is arranged, a rear roller set 72 where the rear wheel set 25 is arranged, a pair of pulleys 73 installed on the front roller set 71 and the rear roller set 72, and a belt 74 installed on the pair of pulleys 73.

In addition to normal people, the exercise device of the present invention can also be used by some patients who need muscle training. When these patients use the present invention, they can indeed activate the function of the user's lower limb muscles. In some embodiments, FIGS. 8, 9, and 10 show the muscle activation of users and the co-contraction of muscle groups when the cushion 13 is located at different heights.

Muscle activation is defined as the muscle recruitment (Burden, 2010) during each cycle when the user pedals the exercise device to exercise. The electromyographic signal is the comprehensive signal of muscle potential. Based on the electromyographic signal, the sequence of muscle groups participating in movements, muscle contraction intensity and the degree of participation of different muscle groups during exercise, so as to evaluate the excitability, coordination, training effect and fatigue of muscles. In time domain with time as the horizontal axis and voltage as the vertical axis, the electromyographic signal records the sum of the superposition of multiple muscle activities. Using the root mean square (RMS) operation, the analog electromyographic signals with continuous characteristics is converted into numbers, which represent muscle recruitment in physiological terms.

The co-contraction situation of muscle groups is used to analyze the ratio (Q:H ratio) of the extensor muscle groups (e.g., quadriceps, Q) of a knee joint to the flexor muscle groups (e.g., hamstrings, H) of the knee joint. Q represents the sum of rectus femoris (RF), vastus lateralis (VL) and vastus medialis (VM). H represents the sum of biceps femoris (BF) and semitendinosus (ST). The ratio is Q divided by H. When the ratio is 1, the user's knee joint is the most stable at this time, which means that the contraction of the quadriceps muscles is equal to that of the hamstring muscles. When the ratio is greater than 1, the contraction of the quadriceps muscles is greater. When the ratio is less than 1, the contraction of the hamstring muscles is greater (Begalle, DiStefano, Blackburn, & Padua, 2012). Observing the co-contraction of muscle groups is an important factor in observing movement efficiency and the stability of the knee joint (Aune, Nordsletten, Skjeldal, Madsen, & Ekeland, 1995). The co-contraction formula is described as follows:

$Q:H\mathrm{ratio}=\left(\mathrm{RF}+\mathrm{VL}+\mathrm{VM}\right)\left(\mathrm{BF}+\mathrm{ST}\right)$

The experiment adopts three different speeds, including those of comfortable speed, medium speed, and slow speed. The comfortable speed is the most comfortable pedaling speed for the user. A metronome to control the pedaling speed as the medium speed, such that each of the user's left and right lower limbs pedals 30 times per minutes. A metronome to control the pedaling speed as the medium speed, such that each of the user's left and right lower limbs pedals 20 times per minutes. The height of the cushion 13 is defined as the standard cushion height S, where S is the user's crotch length multiplied by 0.85 in centimeters. The height of a low cushion is S+10, which means that the height of the cushion 13 is adjusted upward by 10 cm from the standard cushion height. The height of a high cushion is S+20, which means that the height of the cushion 13 is adjusted upward by 20 cm from the standard cushion height.

The instant muscle activation is analyzed when the pedaling motion starts and the cushion 13 is located at different heights. The experimental data are shown based on the heights of a high cushion and a low cushion at riding comfortable speed, slow speed, and medium speed. Regardless of the heights of a high cushion and a low cushion, the activation rate of each muscle group is less than 40% when pedaling motion starts instantly. Therefore, it is very suitable for the elderly and exercise patients to exercise in a gentle manner with their own exercise prescription and intensity.

Refer to FIGS. 8 and 9. FIG. 8 shows the muscle activation at the height of a low cushion. FIG. 9 shows the muscle activation at the height of a high cushion. The muscle activation of each muscle group of the user that starts to pedal at the height of a high cushion is lower than that of the user that starts to pedal at the height of a low cushion. Therefore, allowing the user sitting on a high cushion can be more efficient and safer to use the exercise device of the present invention to perform cyclically pedaling exercise. Furthermore, when the user performs cyclically pedaling exercise at the height of a high cushion, the ratio of the co-contraction parts of the user's lower limbs is close to 1.0 or equal to 1.0, which means that the pedaling exercise at this time causes the user's knee joints to be relatively stable and in good condition. When the user performs cyclically pedaling exercise at the height of a low cushion, the variability of the muscle activation of all muscle groups at the moment of activation is greater and the force is unstably applied. Accordingly, the height (S+20 cm) of a high cushion provides a more effort-saving and safer exercise angle for users.

It is worthy noted that the exercise device of the present invention is not limited to performing the foregoing cyclically pedaling exercise with elliptical trajectories. In some embodiments, the exercise device can also be used to perform upper-limb exercise or pedaling exercise. The exercise device of the present invention can be used as a hand and foot exercise bike, a simulated walking machine, an elliptical machine, a leg pressing machine, a chest pressing machine, a rowing machine, etc. A person with ordinary knowledge in the art makes equivalent modification based on the preferred embodiments disclosed in the present invention to obtain any exercise device that can allow the user to perform cyclical exercise, which is included within the scope of the present invention.

In some embodiments, the exercise device of the present invention can include the first force-bearing member 21 on one side and exclude the second force-bearing member 23 on another side to greatly reduce the volume of the present invention. Especially when the exercise device of the present invention is used in a small space, the user can use the exercise device to perform single limb exercise, such as the left upper limb exercise or the right lower limb exercise, etc., which is included within the scope of the present invention.

In some embodiments, the electrical auxiliary unit 5 can also be used to drive the rear wheel set 25 of the training unit 2. The function of the front wheel set 26 is to change the forward direction of the exercise device when the handle 15 moves the vertical rod 14. In some embodiments, the training unit 2 only needs a single wheel set. For example, the training unit 2 only needs the rear wheel set 25 and the electrical auxiliary unit 5 can also be used to drive the rear wheel set 25 of the training unit 2.

In conclusion, the exercise device of the present invention can be widely used by users to exercise, especially for patients with cerebral palsy, stroke, major accidents, etc. who are accompanied by weakness of one side or a specific muscle group. When the user performs pedaling exercise continuously, the exercise may stagnate or the rotation speed may become too slow within a certain angle range such that assistance is required. In such a case, the electrical auxiliary unit 5 assists in driving the training unit 2 to help the user complete cyclically pedaling exercise and improve the muscle strength of each limb of the user.

The embodiments described above are only to exemplify the present invention but not to limit the scope of the present invention. Therefore, any equivalent modification or variation according to the shapes, structures, features, or spirit disclosed by the present invention is to be also included within the scope of the present invention.

Claims

1. An exercise device comprising: a base unit;a training unit arranged on the base unit and configured to perform a corresponding action under force exerted by a user;a detection unit arranged on the training unit and configured to detect an action performed by the training unit to generate a detection signal;an analyzing and processing module coupled to the detection unit and configured to determine that the training unit is in a normally-used state or an assistance-required state according to the detection signal, wherein the analyzing and processing module generates an electrical auxiliary signal in an assistance-required state; andan electrical auxiliary unit coupled to the analyzing and processing module and configured to assist in driving the training unit according to the electrical auxiliary signal.

2. The exercise device according to claim 1, wherein the base unit comprises: a main body;a post connected between two ends of the main body;a cushion arranged on the post;a vertical rod with one end thereof pivotally connected to one end of the main body; anda handle arranged at another end of the vertical rod.

3. The exercise device according to claim 2, wherein the training unit comprises: a transmission member arranged on the main body;a rear wheel set connected to the transmission member; anda first force-bearing member with one end thereof connected to one side of the transmission member;wherein the first force-bearing member is configured to receive external force to drive the transmission member, thereby rotating the rear wheel set.

4. The exercise device according to claim 3, wherein the training unit further comprises a first pedal arranged at another end of the first force-bearing member and configured to receive external force and drive the first force-bearing member.

5. The exercise device according to claim 4, wherein the training unit further comprises: a second force-bearing member with one end thereof connected to another end of the transmission member; anda second pedal arranged another end of the second force-bearing member and configured to receive external force to drive the second force-bearing member, thereby driving the transmission member.

6. The exercise device according to claim 5, wherein the training unit further comprises a front wheel set connected to the electrical auxiliary unit, when the first pedal or the second pedal is pressed down, the transmission member rotates the rear wheel set, the front wheel set rotates with the rear wheel set, the front wheel set is driven by the electric auxiliary unit in an assistance-required state, the rear wheel set rotates with the front wheel set, and the transmission member rotates the first pedal and the second pedal.

7. The exercise device according to claim 6, wherein a pivot position of the vertical rod is connected to the front wheel set and the handle drives the vertical rod to rotate the front wheel set left and right.

8. The exercise device according to claim 6, wherein the training unit further comprises: a first connecting rod rotationally connected to the first force-bearing member;a second connecting rod rotationally connected to the second force-bearing member;a first auxiliary rod with one end thereof rotationally connected to the first connecting rod, and another end of the first auxiliary rod is rotationally connected between two ends of the vertical rod; anda second auxiliary rod with one end thereof rotationally connected to the second connecting rod, and another end of the second auxiliary rod is rotationally connected between two ends of the vertical rod;wherein the first pedal is arranged on the first connecting rod and the second pedal is arranged on the second connecting rod.

9. The exercise device according to claim 6, wherein the electrical auxiliary unit comprises: a signal receiver coupled to the analyzing and processing module and configured to receive the electrical auxiliary signal;an electric motor coupled to the signal receiver, connected to the front wheel set, and configured to be driven according to the electrical auxiliary signal, thereby driving the front wheel set; anda rechargeable battery coupled to the electric motor and configured to supply power to the electric motor and all electrical components of the exercise device.

10. The exercise device according to claim 3, wherein the detection unit comprises: a disc arranged on the first force-bearing member;a detector arranged at a position of the transmission member relative to the disc; anda movable fixing element configured to fix or unfix the disk to the first force-bearing member; anda plurality of objects to be detected arranged on different positions of the disk;wherein when the movable fixing element is unfixed to the first force-bearing member, the disk is rotated to adjust positions of the plurality of objects to be detected relative to the detector, when the movable fixing element is fixed to the first force-bearing member, the detector detects a rotational position of the disk to generate the detection signal.

11. The exercise device according to claim 1, further comprising a fixing frame where the front wheel set and the rear wheel set are arranged and the front wheel set and the rear wheel set separate from the ground.

12. The exercise device according to claim 11, wherein the fixing frame comprises: a front roller set where the front wheel set is arranged;a rear roller set where the rear wheel set is arranged;a pair of pulleys, wherein one of the pair of pulleys is arranged on the front roller set and another of the pair of pulleys is arranged on the rear roller set; anda belt arranged on the pair of pulleys.