Pedal exercise device

Abstract

To enlarge a stroke in a longitudinal direction of a foot.SOLUTION: A stroke enlarging mechanism 14 causes a pedal slider 11 to slide forward relative to a pedal base 10 during at least a part of a period when the pedal base 10 moves forward in accordance with a pitch rotation of a crank arm 4 and causes the pedal slider 11 to slide rearward relative to the pedal base 10 during at least a part of a period when the pedal base 10 moves rearward in accordance with the pitch rotation of the crank arm 4, so as to enlarge a stroke of the pedal slider 11 in a front-rear direction. The stroke enlarging mechanism 14 is realized by a link mechanism.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a pedaling exercise machine. [Background technology]

[0002] Patent Document 1 discloses a pedaling exercise device equipped with a pair of pedals, one on each side, which allows the user to perform a pedaling exercise by alternately stepping with both feet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-171421 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the configuration of Patent Document 1, the stroke of the foot in the front-rear direction can only be ensured to the length of the crank arm.

[0005] An object of the present disclosure is to provide a technique for increasing the stroke of the foot in the forward and backward directions. [Means for solving the problem]

[0006] According to a first aspect of the present disclosure, A crank arm, a pedal base supported by the crank arm so as to be capable of pitch rotation; a pedal slider slidably supported by the pedal base; a stroke enlarging mechanism in which the pedal slider slides forward relative to the pedal base during at least a portion of a period in which the pedal base moves forward in response to the pitch rotation of the crank arm, and the pedal slider slides backward relative to the pedal base during at least a portion of a period in which the pedal base moves backward in response to the pitch rotation of the crank arm, thereby enlarging a stroke of the pedal slider in the front-to-rear direction; Equipped with The stroke enlarging mechanism is realized by a link mechanism or a cam mechanism. A pedal exercise machine is provided. According to the above-described configuration, the stroke of the pedal slider in the front-rear direction can be increased with a simple configuration.

[0007] the stroke enlarging mechanism is realized by the link mechanism, The stroke enlargement mechanism includes: a base link supported on the pedal base so as to be capable of pitch rotation; a slider link that is supported by the base link so as to be capable of freely turning in pitch direction and is also supported by the pedal slider so as to be capable of freely turning in pitch direction, thereby connecting the base link and the pedal slider; an element that transfers the pitch pivotal movement of the crank arm to a pitch pivotal movement of the base link relative to the pedal base; Including, The base link may be configured to pitch rotate relative to the pedal base in association with pitch rotation of the crank arm. According to the above configuration, the link mechanism that realizes the stroke enlarging mechanism can be realized with a simple configuration.

[0008] a pivot axis of the base link about which the pedal base is pitched relative to the pedal base and a pivot axis of the crank arm about which the pedal base is pitched relative to the pedal base coincide with each other; The base link may be attached to the crank arm so as not to be able to pitch rotate. According to the above configuration, it is possible to simply realize a configuration in which the base link pitches relative to the pedal base in response to the pitch of the crank arm.

[0009] The stroke enlarging mechanism is realized by a cam mechanism, The stroke enlargement mechanism includes: a guide member having a cam groove extending annularly when viewed along the pitch pivot axis; a follower provided on the pedal slider and guided along the cam groove; Including, The dimension of the cam groove in the front-rear direction may be greater than the dimension of the cam groove in the up-down direction. According to the above configuration, the cam mechanism that realizes the stroke enlarging mechanism can be realized with a simple configuration.

[0010] The stroke enlarging mechanism may further include a follower support that supports the follower so that the follower is movable up and down relative to the pedal slider. According to the above configuration, assembly errors and manufacturing errors can be absorbed. [Effects of the Invention]

[0011] According to the present disclosure, the stroke of the pedal slider in the front-rear direction can be increased with a simple configuration. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of a pedaling exercise machine (first embodiment); [Figure 2] 1 is a left side view of the pedaling exercise machine (first embodiment). [Figure 3] 10 is a diagram for explaining the mechanism of stroke enlargement (first embodiment). [Figure 4] 1 is a perspective view of a pedaling exercise machine (second embodiment). [Figure 5]10 is a diagram for explaining the mechanism of stroke enlargement (second embodiment). DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, specific embodiments to which the present disclosure is applied will be described in detail with reference to the drawings. However, the present disclosure is not limited to the following embodiments. In addition, the following description and drawings have been simplified as appropriate for clarity of explanation.

[0014] (First embodiment) A first embodiment of the present disclosure will be described below with reference to Figures 1 to 3. Figure 1 is a perspective view of a pedaling exercise device 1. Figure 2 is a left side view of the pedaling exercise device 1.

[0015] The pedaling exercise device 1 shown in Fig. 1 is a lower limb exercise device that allows a user to pedal while seated. That is, the pedaling exercise device 1 realizes lower limb exercise that involves repeated extension and flexion of the knee joints, hip joints, and ankle joints.

[0016] As shown in FIG. 1, the pedaling exercise device 1 includes a device body 2, a crank shaft 3, a pair of crank arms 4, and a pair of pedal units 5.

[0017] The machine body 2 rotatably supports a horizontally extending crankshaft 3. In FIG. 1, the crankshaft 3 is housed within the machine body 2 and is therefore simply shown by a two-dot chain line. The machine body 2 is configured to apply a desired load to the rotation of the crankshaft 3. In FIG. 1, the longitudinal direction of the crankshaft 3 is defined as the width direction.

[0018] The pair of crank arms 4 extend in opposite directions from both ends of the crankshaft 3. In Fig. 1, the pair of crank arms 4 are housed within the device main body 2, and are therefore simply illustrated by two-dot chain lines.

[0019] The pair of pedal units 5 are respectively connected to the pair of crank arms 4. As a result, the pair of pedal units 5 reciprocate in the front-rear direction in accordance with the pitch rotation of the pair of crank arms 4.

[0020] Here, "forward" refers to the direction in which the left pedal unit 5 corresponding to the left leg moves when, for example, the left leg is swung forward, and "backward" refers to the direction in which the left pedal unit 5 corresponding to the left leg moves when, for example, the left leg is pulled back. "Pitch rotation" refers to rotation around a pitch rotation axis extending in the width direction.

[0021] A user sits in a chair, places both feet on a pair of pedal units 5, and alternately swings their right and left legs, performing so-called pedaling exercise. During this exercise, the knee joints, hip joints, and ankle joints of the right and left legs are repeatedly extended and flexed. Typically, when the knee joint of the right leg is extended, the knee joint of the left leg is flexed. When the hip joint of the right leg is extended, the hip joint of the left leg is flexed. When the ankle joint of the right leg is extended, the ankle joint of the left leg is flexed. As a result, the pair of pedal units 5 perform periodic motions in opposite phases to each other. The device main body 2 is configured to allow adjustment of the load on the rotation of the crank shaft 3. By adjusting the load on the rotation of the crank shaft 3, the user can perform pedaling exercise with a desired exercise load.

[0022] In the following description, only the pedal unit 5 for the left foot out of the pair of pedal units 5 will be described, and a description of the pedal unit 5 for the right foot will be omitted.

[0023] As shown in FIGS. 1 and 2, the pedal unit 5 includes a pedal base 10, a pedal slider 11, a linear guide 12, a wheel 13, and a stroke enlarging mechanism 14.

[0024] The pedal base 10 is a plate extending in the front-to-rear direction and is supported by the crank arm 4 so as to be capable of pitch rotation. More specifically, the tip 10a of the pedal base 10 is attached to a base shaft 4b extending outward in the width direction from the tip 4a of the crank arm 4 so as to be capable of pitch rotation. The base shaft 4b is fixed to the tip 4a of the crank arm 4 so as not to be capable of pitch rotation. A wheel 13 is disposed at the rear end 10b of the pedal base 10. With the above configuration, when the crank arm 4 pitches counterclockwise in FIG. 2, the tip 10a of the pedal base 10 moves along a circular path defined by the arm length of the crank arm 4, and the wheel 13 moves back and forth in the front-to-rear direction. Therefore, when the crank arm 4 pitches counterclockwise, the tip 10a of the pedal base 10 moves up and down, causing the inclination of the pedal base 10 to change.

[0025] The pedal slider 11 is a plate extending in the front-rear direction, on which the user places his or her left foot. The pedal slider 11 is supported on the pedal base 10 so as to be slidable along the longitudinal direction of the pedal base 10. Specifically, the pedal slider 11 is slidable relative to the pedal base 10 via a linear guide 12.

[0026] The stroke enlargement mechanism 14 enlarges the stroke of the pedal slider 11 in the front-to-rear direction by causing the pedal slider 11 to slide forward relative to the pedal base 10 during at least a portion of the period during which the pedal base 10 moves forward in accordance with the pitch rotation of the crank arm 4, and by causing the pedal slider 11 to slide backward relative to the pedal base 10 during at least a portion of the period during which the pedal base 10 moves backward in accordance with the pitch rotation of the crank arm 4. In this embodiment, the stroke enlargement mechanism 14 is realized by a link mechanism.

[0027] Specifically, the stroke enlarging mechanism 14 includes a base link 20 and a slider link 21 .

[0028] The base link 20 is supported by the pedal base 10 so as to be able to pitch rotate relative to the pedal base 10. The base link 20 has a base-side end 20a and a slider-side end 20b. A pivot 20p for pitch rotation of the base link 20 relative to the pedal base 10 is provided at the base-side end 20a of the base link 20.

[0029] The slider link 21 is supported by the base link 20 so as to be pitch rotatable relative to the base link 20, and is also supported by the pedal slider 11 so as to be pitch rotatable, thereby connecting the base link 20 and the pedal slider 11. The slider link 21 has a base-side end 21a and a slider-side end 21b. A pivot shaft 21p for pitch rotation of the slider link 21 relative to the base link 20 is provided at the base-side end 21a of the slider link 21. A pivot shaft 21q for pitch rotation of the slider link 21 relative to the pedal slider 11 is provided at the slider-side end 21b of the slider link 21.

[0030] With the above configuration, when the base link 20 pitches around the pivot shaft 20p, the pedal slider 11 slides in the front-to-rear direction relative to the pedal base 10. For example, when the slider-side end 20b of the base link 20 moves forward relatively to the base-side end 20a, the pedal slider 11 slides forward relatively to the pedal base 10. Conversely, when the slider-side end 20b of the base link 20 moves rearward relatively to the base-side end 20a, the pedal slider 11 slides rearward relatively to the pedal base 10.

[0031] The stroke enlargement mechanism 14 is configured so that the pitch rotation of the crank arm 4 and the pitch rotation of the base link 20 relative to the pedal base 10 are linked together so that the pedal slider 11 slides forward relative to the pedal base 10 when the pedal base 10 moves forward, and so that the pedal slider 11 slides backward relative to the pedal base 10 when the pedal base 10 moves backward. In other words, the stroke enlargement mechanism 14 is configured so that the pitch rotation of the crank arm 4 causes the base link 20 to pitch rotate in the same direction relative to the pedal base 10.

[0032] Specifically, a rotation axis 20p of the base link 20 for pitch rotation relative to the pedal base 10 coincides with a rotation axis 4p of the crank arm 4 for pitch rotation relative to the pedal base 10. The base link 20 is attached to the crank arm 4 so as not to be able to pitch rotate.

[0033] As a result, when the crank arm 4 pitches counterclockwise around the crank shaft 3, the base link 20 pitches counterclockwise around the pivot shaft 20p.

[0034] FIG. 3 shows the sliding movement of the pedal slider 11 when the pedal base 10 is moved forward and backward. As shown in FIG. 3, the angle θ between the crank arm 4 and the base link 20 is, for example, 200 degrees. The angle θ can be defined as the pivot angle of the crank arm 4 required for the crank arm 4 and the base link 20 to overlap when the crank arm 4 is released from the base link 20 and pivoted counterclockwise around the pivot axis 4p. The angle θ can be set arbitrarily. For example, the angle θ is any angle between 90 degrees and 270 degrees. For example, the angle θ is any angle between 135 degrees and 225 degrees. The angle θ of the stroke magnification mechanism 14 may be configured to be adjustable at any time.

[0035] In Figure 3, when the crank arm 4 pitch-rotates counterclockwise around the crankshaft 3 in State 1, the state changes from State 1 to State 2. At this time, the pivot shaft 4p moves forward relative to the crankshaft 3, so the pedal base 10 moves forward. Also, the pivot shaft 21p moves forward relative to the pivot shaft 20p, so the pedal slider 11 moves forward relative to the pedal base 10. In other words, when the pedal base 10 moves forward, the pedal slider 11 moves forward relative to the pedal base 10.

[0036] Similarly, in Figure 3, when the crank arm 4 further pitch-rotates counterclockwise around the crankshaft 3, the state changes from state 2 to state 3. At this time, the pivot shaft 4p moves rearward relative to the crankshaft 3, and the pedal base 10 moves rearward. In addition, the pivot shaft 21p moves rearward relative to the pivot shaft 20p, and the pedal slider 11 moves rearward relative to the pedal base 10. In other words, when the pedal base 10 moves rearward, the pedal slider 11 moves rearward relative to the pedal base 10.

[0037] The stroke of the pedal slider 11 in the front-rear direction is effectively increased by the stroke enlarging mechanism 14.

[0038] Typically, the pedal base 10 is configured so that the movement of the pedal slider 11 in the front-to-rear direction is completely synchronized with the movement of the pedal slider 11 in the front-to-rear direction relative to the pedal base 10. That is, typically, when the pedal base 10 is positioned at the frontmost position, the pedal slider 11 is positioned at the frontmost position relative to the pedal base 10, and when the pedal base 10 is positioned at the rearmost position, the pedal slider 11 is positioned at the rearmost position relative to the pedal base 10.

[0039] However, the present invention is not limited to this, and may be configured, for example, so that the pedal slider 11 moves forward relative to the pedal base 10 only at the beginning of a period in which the pedal base 10 is moving forward. Similarly, for example, the pedal slider 11 may be configured so that the pedal slider 11 moves backward relative to the pedal base 10 only at the beginning of a period in which the pedal base 10 is moving backward. In other words, as long as the stroke of the pedal slider 11 in the front-to-rear direction relative to the crankshaft 3 is longer than the stroke of the pedal base 10 in the front-to-rear direction relative to the crankshaft 3, the angle θ, the arm length of the crank arm 4, the link length of the base link 20, and the link length of the slider link 21 can be freely set.

[0040] The first embodiment described above has the following features.

[0041] As shown in Figures 1 to 3, the pedaling exercise device 1 includes a crank arm 4, a pedal base 10 supported by the crank arm 4 so as to be capable of pitch rotation, a pedal slider 11 supported by the pedal base 10 so as to be capable of sliding, and a stroke extension mechanism 14. The stroke extension mechanism 14 extends the stroke of the pedal slider 11 in the front-to-rear direction by sliding the pedal slider 11 forward relative to the pedal base 10 during at least a portion of the period during which the pedal base 10 moves forward in conjunction with the pitch rotation of the crank arm 4, and by sliding the pedal slider 11 backward relative to the pedal base 10 during at least a portion of the period during which the pedal base 10 moves backward in conjunction with the pitch rotation of the crank arm 4. The stroke extension mechanism 14 is implemented by a link mechanism. With the above-described configuration, the stroke of the pedal slider 11 in the front-to-rear direction can be extended with a simple structure.

[0042] The stroke extension mechanism 14 also includes a base link 20 that is pitch-rotatably supported on the pedal base 10, a slider link 21 that is pitch-rotatably supported on the base link 20 and also pitch-rotatably supported on the pedal slider 11, thereby connecting the base link 20 and the pedal slider 11, and an element that transmits the pitch rotational movement of the crank arm 4 to the pitch rotational movement of the base link 20 relative to the pedal base 10. The base link 20 is configured to pitch rotate relative to the pedal base 10 in conjunction with the pitch rotation of the crank arm 4. With the above configuration, the link mechanism that realizes the stroke extension mechanism 14 can be realized with a simple configuration.

[0043] As an element for transmitting the pitch rotational movement of the crank arm 4 to the pitch rotational movement of the base link 20 relative to the pedal base 10, a power transmission mechanism such as a belt or gears may be provided.

[0044] Furthermore, the pivot axis 20p of the pitch rotation of the base link 20 relative to the pedal base 10 coincides with the pivot axis 4p of the pitch rotation of the crank arm 4 relative to the pedal base 10. The base link 20 is attached to the crank arm 4 so as not to be able to pitch rotate. By making the base link 20 pitch-rotating impossible, the pitch rotation of the crank arm 4 can be transmitted to the pitch rotation of the base link 20 relative to the pedal base 10. With the above configuration, a configuration can be simply realized in which the base link 20 pitch rotates relative to the pedal base 10 in conjunction with the pitch rotation of the crank arm 4.

[0045] (Second embodiment) Next, a second embodiment of the present disclosure will be described with reference to Figures 4 and 5. The following description will focus on the differences between this embodiment and the first embodiment, and redundant explanations will be omitted. This embodiment differs from the first embodiment in the configuration of the stroke enlargement mechanism 14. Therefore, the configuration of the stroke enlargement mechanism 14 will be described in detail below.

[0046] The stroke enlargement mechanism 14 of this embodiment is realized by a cam mechanism. That is, as shown in Fig. 4, in this embodiment, the stroke enlargement mechanism 14 includes a guide member 31 having a cam groove 30 that extends annularly when viewed along the width direction (pitch rotation axis), and a follower 32 that is provided on the pedal slider 11 and guided along the cam groove 30.

[0047] The guide member 31 is a plate member that is perpendicular to the crankshaft 3. The guide member 31 includes an inner guide member 33 that defines the inner circumferential surface 30a of the annularly extending cam groove 30, an outer guide member 34 that defines the outer circumferential surface 30b of the cam groove 30, and a connecting plate (not shown) that connects the inner guide member 33 and the outer guide member 34. The connecting plate is typically arranged to cover the inner guide member 33 and the outer guide member 34 in the width direction, and supports the inner guide member 33 by fixing the inner guide member 33 and the outer guide member 34 to the connecting plate. The guide member 31 is fixed to the device body 2 via a frame 35.

[0048] The cam groove 30 forms a circular orbit that is flattened in the vertical direction. Therefore, the dimension X of the cam groove 30 in the front-to-rear direction is greater than the dimension Y of the cam groove 30 in the vertical direction. The dimension X of the cam groove 30 in the front-to-rear direction means the dimension of the entire cam groove 30 in the front-to-rear direction. Therefore, the dimension X of the cam groove 30 in the front-to-rear direction is naturally greater than the distance between the inner circumferential surface 30a and the outer circumferential surface 30b of the cam groove 30. Similarly, the dimension Y of the cam groove 30 in the vertical direction means the dimension of the entire cam groove 30 in the vertical direction. The circular orbit may be an elliptical orbit. In this case, the major axis of the ellipse extends in the front-to-rear direction, and the minor axis of the ellipse extends in the vertical direction. Any orbit can be used as the circular orbit as long as it is elongated in the front-to-rear direction.

[0049] The follower 32 is a roller that is supported so as to be capable of pitch rotation by the pedal slider 11. The follower 32 is housed in the cam groove 30 and moves along the cam groove 30.

[0050] In this embodiment, the follower 32 is supported on the pedal slider 11 via a follower support 40. The follower support 40 includes two guide bars 41 protruding upward from the tip 11a of the pedal slider 11, a connecting bar 42 connecting the upper ends of the two guide bars 41, a bracket 43 that holds the follower 32, and a plurality of compression coil springs 44.

[0051] More specifically, the two guide bars 41 extend perpendicular to the sliding direction in which the pedal slider 11 slides relative to the pedal base 10 in a side view.

[0052] The bracket 43 has two through holes 43a through which the two guide bars 41 respectively pass. By having the two guide bars 41 pass through the two through holes 43a, the follower 32 held by the bracket 43 is configured to be movable in a direction perpendicular to the sliding direction.

[0053] The multiple compression coil springs 44 include an upper spring 44a and a lower spring 44b provided on the first guide bar 41a, which is one of the two guide bars 41, and an upper spring 44c and a lower spring 44d provided on the second guide bar 41b, which is the other. The upper spring 44a and the upper spring 44c are disposed between the bracket 43 and the connecting bar 42 and are configured to push down the bracket 43. The lower spring 44b and the lower spring 44d are disposed between the tip 11a of the pedal slider 11 and the bracket 43 and are configured to push up the bracket 43. As a result, the follower 32 is free to move up and down relative to the pedal slider 11 and elastically return to a neutral position between the tip 11a of the pedal slider 11 and the connecting bar 42.

[0054] In this way, by allowing the follower 32 to move up and down relatively to the pedal slider 11, assembly errors of the guide member 31 to the device main body 2 and manufacturing errors of the cam groove 30 of the guide member 31 can be effectively absorbed.

[0055] More specifically, among the assembly errors of the guide member 31 relative to the device main body 2, assembly errors in the front-to-rear direction do not pose much of a problem, but assembly errors in the up-to-down direction can significantly hinder the movement of the follower 32 along the cam groove 30. For example, if the guide member 31 is assembled higher than specified relative to the device main body 2, the follower 32 will physically interfere excessively with the inner guide member 33 when moving in the upper half of the cam groove 30, and will physically interfere excessively with the outer guide member 34 when moving in the lower half of the cam groove 30, and as a result, the follower 32 will stop in the cam groove 30 and will be unable to move any further.

[0056] To address this problem, by allowing the follower 32 to move up and down relative to the pedal slider 11, even if the guide member 31 is assembled higher than normal relative to the device main body 2, when the follower 32 moves in the upper half of the cam groove 30, the follower 32 moves upward relative to the pedal slider 11, thereby avoiding excessive physical interference between the follower 32 and the inner guide member 33. Similarly, when the follower 32 moves in the lower half of the cam groove 30, the follower 32 moves upward relative to the pedal slider 11, thereby avoiding excessive physical interference between the follower 32 and the outer guide member 34, and thus the follower 32 can move smoothly along the cam groove 30.

[0057] As a countermeasure against excessive physical interference between the follower 32 and the outer guide member 34, the outer periphery of the follower 32 may be made of rubber. This is expected to allow elastic deformation of the outer periphery of the follower 32 to absorb the excessive interference.

[0058] FIG. 5 shows the sliding movement of the pedal slider 11 when the pedal base 10 moves forward and backward.

[0059] 5, when the crank arm 4 pitches counterclockwise around the crankshaft 3 in State 1, the state changes from State 1 to State 2. At this time, the tip 10a of the pedal base 10 describes a circular orbit centered on the crankshaft 3, while the follower 32 describes an orbit defined by the cam groove 30. As a result, when transitioning from State 1 to State 2, the amount of forward movement of the pedal slider 11 becomes greater than the amount of forward movement of the pedal base 10, and therefore the pedal slider 11 moves forward relative to the pedal base 10.

[0060] 5, when the crank arm 4 further pitches counterclockwise around the crankshaft 3, the state changes from State 2 to State 3. At this time, the tip 10a of the pedal base 10 describes a circular orbit centered on the crankshaft 3, while the follower 32 describes an orbit defined by the cam groove 30. As a result, when transitioning from State 2 to State 3, the amount of rearward movement of the pedal slider 11 becomes greater than the amount of rearward movement of the pedal base 10, and therefore the pedal slider 11 moves rearward relative to the pedal base 10.

[0061] The stroke of the pedal slider 11 in the front-rear direction is effectively increased by the stroke enlarging mechanism 14.

[0062] The second embodiment described above has the following features.

[0063] That is, the stroke magnifying mechanism 14 is realized by a cam mechanism. The stroke magnifying mechanism 14 includes a guide member 31 having a cam groove 30 that extends annularly when viewed along the pitch pivot axis, and a follower 32 that is provided on the pedal slider 11 and guided along the cam groove 30. The dimension X of the cam groove 30 in the front-to-rear direction is greater than the dimension Y of the cam groove 30 in the up-to-down direction. With the above configuration, the cam mechanism that realizes the stroke magnifying mechanism 14 can be realized with a simple configuration.

[0064] The stroke enlarging mechanism 14 further includes a follower support 40 that supports the follower 32 so that the follower 32 is movable up and down relative to the pedal slider 11. With the above configuration, assembly errors and manufacturing errors can be absorbed. [Explanation of symbols]

[0065] 1. Pedal exercise equipment 2. Device body 3 crankshaft 4 crank arms 5 Pedal unit 10 Pedal Base 11 Pedal Slider 12 Linear guide 13 wheels 14 Stroke expansion mechanism

Claims

1. A crank arm, a pedal base supported by the crank arm so as to be capable of pitch rotation; a pedal slider slidably supported by the pedal base; a stroke enlarging mechanism in which the pedal slider slides forward relative to the pedal base during at least a portion of a period in which the pedal base moves forward in response to the pitch rotation of the crank arm, and the pedal slider slides backward relative to the pedal base during at least a portion of a period in which the pedal base moves backward in response to the pitch rotation of the crank arm, thereby enlarging a stroke of the pedal slider in the front-to-rear direction; Equipped with The stroke enlarging mechanism is realized by a link mechanism or a cam mechanism. Pedal exercise equipment.

2. The pedaling exercise device according to claim 1, the stroke enlarging mechanism is realized by the link mechanism, The stroke enlargement mechanism includes: a base link supported on the pedal base so as to be capable of pitch rotation; a slider link that is supported by the base link so as to be capable of freely turning in pitch direction and is also supported by the pedal slider so as to be capable of freely turning in pitch direction, thereby connecting the base link and the pedal slider; an element that transfers the pitch pivotal movement of the crank arm to a pitch pivotal movement of the base link relative to the pedal base; Including, The base link is configured to pitch rotate relative to the pedal base in accordance with the pitch rotation of the crank arm. Pedal exercise equipment.

3. The pedaling exercise device according to claim 2, a pivot axis of the base link about which the pedal base is pitched relative to the pedal base and a pivot axis of the crank arm about which the pedal base is pitched relative to the pedal base coincide with each other; The base link is attached to the crank arm so as not to be able to pitch rotate. Pedal exercise equipment.

4. The pedaling exercise device according to claim 1, The stroke enlarging mechanism is realized by a cam mechanism, The stroke enlargement mechanism includes: a guide member having a cam groove extending annularly when viewed along the pitch pivot axis; a follower provided on the pedal slider and guided along the cam groove; Including, The dimension of the cam groove in the front-rear direction is larger than the dimension of the cam groove in the up-down direction. Pedal exercise equipment.

5. The pedaling exercise device according to claim 4, The stroke enlarging mechanism further includes a follower support that supports the follower so that the follower is movable up and down relative to the pedal slider. Pedal exercise equipment.

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