Pedaling exercise system

Abstract

To achieve continuity of a pedaling exercise using a pedaling exercise machine at a high level.SOLUTION: A pedaling exercise system 100 includes: a pedaling exercise machine 2 having pedals 10 of a pair of pedal units 7; a chair 1 having a seating part 3 turnable about a turning axis of a yaw axis; and a transmission mechanism 30 that transmits a pedal stepping force on the pedal 10 of one pedal unit 7 to the seating part 3 such that stepping on the pedal 10 of the one pedal unit 7 induces stepping on the pedal 10 of the other pedal unit 7.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pedaling exercise system.

Background Art

[0002] Patent Document 1 discloses a pedaling exercise device that can be used by disabled or elderly people with damaged lower limb nerves due to cerebral infarction or the like, or those with excessively weakened foot strength due to aging, by mounting an electric assist function.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in order to eliminate the lack of daily exercise associated with desk work, it is typically preferable to install a pedaling exercise device under the desk. That is, if a pedaling exercise is performed using the pedaling exercise device while sitting during desk work, the lack of daily exercise can be eliminated without having to specifically set aside time for exercise.

[0005] However, simply installing a pedaling exercise device under the desk does not mean that everyone will perform the pedaling exercise. This is because there are individual differences in motivation for the pedaling exercise. That is, for those with low motivation for the pedaling exercise, the hurdle to starting the pedaling exercise is high.

[0006] On the other hand, for example, it is conceivable to provide a detection sensor for detecting the presence or absence of pedaling motion in a pedaling exercise device, and when the pedaling motion is not being performed, rotate the pedal around the crankshaft using an electric actuator. This can provide the user with an opportunity to start pedaling even if they are unable to spontaneously initiate the pedaling motion. As a result, the pedaling motion can be sufficiently continued.

[0007] However, in this case, it is necessary to mount a detection sensor and an electric actuator on the pedaling exercise device, raising concerns about increased cost and size of the pedaling exercise device. Also, since the body is moved from the outside, the user may not be able to immediately stop the exercise when they want to, and may feel uncomfortable about the time it takes for the exercise to stop.

[0008] Therefore, the inventors of the present application focus on the continuity of the pedaling motion using a pedaling exercise device. The object of the present disclosure is to provide a technology for realizing the continuity of the pedaling motion using a pedaling exercise device.

Means for Solving the Problem

[0009] A pedaling exercise device having a pair of pedals, A chair having a seating portion that can pivot about a pivot axis of at least one of a yaw axis or a roll axis, A transmission mechanism that transmits the pedal pressing force on one of the pedals to the seating portion so as to induce the pressing of the other pedal when one of the pedals is depressed, including A pedaling motion system is provided. According to the above configuration, the continuity of the pedaling motion using a pedaling exercise device can be realized.

[0010] The transmission mechanism may be configured to pivot the seating portion about the yaw axis after one of the pedals is depressed and before the other pedal is depressed.

[0011] The transmission mechanism may be configured to rotate the seating portion around the roll axis after depressing one of the pedals and before depressing the other pedal.

[0012] The transmission mechanism a right-foot side extension member extending from a right-foot side interlocking portion that rotates around a crank shaft in conjunction with a right-foot side pedal to the right-foot side of the seating portion; a left-foot side extension member extending from a left-foot side interlocking portion that rotates around the crank shaft in conjunction with a left-foot side pedal to the left-foot side of the seating portion; may include.

[0013] The transmission mechanism an endless member that circulates by the rotation of a crankshaft; a conversion mechanism that converts the circulating movement of the endless member into a reciprocating turning movement of the seating portion; may include.

Advantages of the Invention

[0014] According to the present disclosure, it is possible to realize the continuity of the rowing motion using the rowing exercise equipment.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Best Mode for Carrying Out the Invention

[0016] (First Embodiment) Hereinafter, with reference to FIGS. 1 to 3, the first embodiment of the present disclosure will be described. FIG. 1 shows a pedaling exercise system 100.

[0017] The pedaling exercise system 100 includes a chair 1, a pedaling exercise device 2, and a transmission mechanism 30. The user U performs desk work using a laptop computer placed on a desk (not shown) while sitting on the chair 1. The pedaling exercise device 2 is typically installed under the desk. Thereby, the user U can perform a pedaling exercise using the pedaling exercise device 2 during desk work.

[0018] The chair 1 includes a seat portion 3 that can be yawed and turned, and support legs 4 that support the seat portion 3. The chair 1 may further include a backrest. The support legs 4 include, as an example, a plurality of swivel casters 5. If the chair 1 moves due to the stepping load during pedaling exercise, a swivel caster with a lock or a wheel stopper may be used. The plurality of swivel casters 5 can be omitted.

[0019] FIG. 2 shows a perspective view of the pedaling exercise device 2. As shown in FIG. 2, the pedaling exercise device 2 includes a device main body 6, a pair of pedal units 7, and a crankshaft 8 that connects the pair of pedal units 7 to each other. The pair of pedal units 7 is composed of a right-foot side pedal unit 7R and a left-foot side pedal unit 7L. The right-foot side pedal unit 7R and the left-foot side pedal unit 7L are connected to each other by the crankshaft 8. Since the configurations of the right-foot side pedal unit 7R and the left-foot side pedal unit 7L are symmetric with respect to the sagittal plane of the user U, typically, the right-foot side pedal unit 7R will be described, and the description of the left-foot side pedal unit 7L will be omitted as appropriate. However, similar to a general pedaling exercise device, the right-foot side pedal unit 7R and the left-foot side pedal unit 7L are arranged with opposite phases so as to operate alternately.

[0020] The right-foot side pedal unit 7R includes a crank 9, a pedal 10, and an interlocking part 11.

[0021] The crank 9 is fixed to the crankshaft 8. In this embodiment, the crank 9 is formed in a disk shape. However, alternatively, the crank 9 may be in an arm shape extending from the crankshaft 8.

[0022] The pedal tip 10a on the toe side of the pedal 10 is rotatably connected to the crank 9. A wheel 10c is provided at the pedal rear end 10b on the heel side of the pedal 10. With this configuration, when the crankshaft 8 rotates, the pedal tip 10a of the pedal 10 performs an elliptical motion centered on the crankshaft 8 when observing the leg rowing exercise device 2 in the width direction as the direction orthogonal to the sagittal plane of the user U. Along with this, the pedal rear end 10b of the pedal 10 performs a reciprocating linear motion in the front-rear direction as the direction orthogonal to the coronal plane of the user U because the wheel 10c rolls on the installation surface of the leg rowing exercise device 2. With the above configuration, the user U performs a leg rowing motion by alternately stepping forward with both legs while placing both feet on the pedals 10 of the pair of pedal units 7.

[0023] Hereinafter, the leg rowing exercise device 2 will be described in more detail.

[0024] A pedal support shaft 12 protrudes from the crank 9 to the outside (lateral) side. The pedal tip 10a of the pedal 10 is rotatably connected to the pedal support shaft 12.

[0025] The interlocking part 11 is arranged on the outside side of the pedal 10. The interlocking part 11 is configured to rotate around the crankshaft 8a in conjunction with the pedal 10. Specifically, a support link 13 extends from the tip 12a of the pedal support shaft 12 parallel to the sagittal plane. The interlocking part 11 is provided on the support link 13. With the above configuration, when the crankshaft 8 rotates, the interlocking part 11 and the pedal support shaft 12 perform a circular motion around the crankshaft 8a at the same rotational speed.

[0026] Figure 3 shows a side view of the pedaling exercise device 2. When the user U performs a pedaling exercise using the pedaling exercise device 2, in the side view of Figure 3, the pedal support shaft 12 and the linkage portion 11 will perform a circular motion clockwise CW around the crankshaft 8a. Here, the crank angle θ1 and the linkage angle θ2 are defined. The crank angle θ1 is an angle that increases clockwise CW with respect to a reference line R extending rearward from the crankshaft 8a with the crankshaft 8a as the center. The crank angle θ1 of the pedal support shaft 12 is hereinafter simply referred to as the crank angle θ1. In this embodiment, as an example, it is assumed that the depression of the pedal 10 is performed when the crank angle θ1 is between 80 degrees and 135 degrees. This angular range can vary depending on the load direction in which the user depresses the pedal and the component dimensions of the pedaling exercise device (for example, the length of the line segment P, the length from the pedal support shaft 12 to the axis of the wheel 10c, etc.). The linkage angle θ2 is the angle between a line segment P connecting the crankshaft 8a and the pedal support shaft 12 and a line segment Q connecting the crankshaft 8a and the linkage portion 11. Specifically, the linkage angle θ2 corresponds to the amount of rotation when the line segment P is rotated clockwise CW around the crankshaft 8a until the line segment P coincides with the line segment Q. In this embodiment, the linkage angle θ2 is set from 0 to 180 degrees. As shown in Figure 3, the linkage angle θ2 is set to 135 degrees as an example.

[0027] The support link 13 is illustrated in an arm shape, but it may be composed of a circular plate. In this case, it becomes easier to change the setting of the linkage angle θ2. Also, there is no need to prepare and replace a plurality of types of support links 13 according to the set angle of the linkage angle θ2. The circular plate is supported at the tip 12a of the pedal support shaft 12 so that the center of the circular plate coincides with the crankshaft 8a. And at a position separated from the center of the circular plate by the length of the line segment Q, a shape (such as a screw hole) for attaching the linkage portion 11 is provided at intervals of, for example, 30 degrees with respect to the linkage angle θ2. By doing so, it becomes easy to attach and detach the linkage portion 11 at intervals of 30 degrees with respect to the linkage angle θ2.

[0028] Returning to FIG. 1, the transmission mechanism 30 is composed of a right-foot side extension member 30R and a left-foot side extension member 30L. For the convenience of explanation, the right-foot side extension member 30R is shown by a solid line, and the left-foot side extension member 30L is shown by a dashed line. The right-foot side extension member 30R extends from the linkage portion 11 of the right-foot side pedal unit 7R to the right-foot side surface 3R of the seating portion 3. Typically, one end of the right-foot side extension member 30R is fixed to the linkage portion 11 of the right-foot side pedal unit 7R, and the other end of the right-foot side extension member 30R is fixed to the right-foot side surface 3R of the seating portion 3. Similarly, the left-foot side extension member 30L extends from the linkage portion 11 of the left-foot side pedal unit 7L to the left-foot side surface 3L of the transmission mechanism 30. Typically, one end of the left-foot side extension member 30L is fixed to the linkage portion 11 of the left-foot side pedal unit 7L, and the other end of the left-foot side extension member 30L is fixed to the left-foot side surface 3L of the seating portion 3.

[0029] The right-foot side extension member 30R and the left-foot side extension member 30L are each composed of at least any one or a combination of two or more of thread, string, cord, rope, wire, spring, and damper. As an example, the right-foot side extension member 30R and the left-foot side extension member 30L are each a single flexible material such as thread, string, cord, rope, or wire. As an example, the right-foot side extension member 30R and the left-foot side extension member 30L are each composed of a single flexible material such as thread, string, cord, rope, or wire combined with a spring or a damper. However, for example, the entire right-foot side extension member 30R and the entire left-foot side extension member 30L may be composed of a spring or a damper.

[0030] With the above configuration, the transmission mechanism 30 transmits the pedal stepping force at the pedal 10 of one pedal unit 7 to the seating portion 3 so as to induce the stepping of the pedal 10 of the other pedal unit 7 by stepping on the pedal 10 of one pedal unit 7. Specifically, after stepping on the pedal 10 of one pedal unit 7 and before stepping on the pedal 10 of the other pedal unit 7, the transmission mechanism 30 rotates the seating portion 3 about the yaw axis. Specifically, it is as follows.

[0031] In FIG. 3, when the crank angle θ1 is from 80 degrees to 135 degrees, the pedal 10 is depressed in the right foot side pedal unit 7R. That is, the depression of the pedal 10 in the right foot side pedal unit 7R starts when the crank angle θ1 is 80 degrees and ends when it is 135 degrees. On the other hand, when the crank angle θ1 is from 260 degrees to 315 degrees, the pedal 10 is depressed in the left foot side pedal unit 7L. That is, the depression of the pedal 10 in the left foot side pedal unit 7L starts when the crank angle θ1 is 260 degrees and ends when it is 315 degrees. And in the present embodiment, the interlocking angle θ2 is set to an arbitrary value between 0 and 180 degrees.

[0032] As a result, after stepping on the pedal 10 of the right-foot side pedal unit 7R and before stepping on the pedal 10 of the left-foot side pedal unit 7L, tension is generated in the left-foot side extension member 30L of the transmission mechanism 30 by the pedal stepping force acting on the pedal 10 of the right-foot side pedal unit 7R, and the seating portion 3 will yaw and turn so that the user U's left hip joint moves forward. Here, the crank angle θ1 after stepping on the pedal 10 of the right-foot side pedal unit 7R and before stepping on the pedal 10 of the left-foot side pedal unit 7L means the crank angle θ1 after the depression of the pedal 10 of the right-foot side pedal unit 7R starts and before the depression of the pedal 10 of the left-foot side pedal unit 7L starts. And in the present embodiment, the crank angle θ1 after stepping on the pedal 10 of the right-foot side pedal unit 7R and before stepping on the pedal 10 of the left-foot side pedal unit 7L corresponds to the range of 80 to 260 degrees. When the crank angle θ1 is in the range of 80 degrees to 260 degrees, the length of the left-foot side extension member 30L is appropriately adjusted so that tension is generated in the left-foot side extension member 30L.

[0033] Similarly, after stepping on the pedal 10 of the left-foot side pedal unit 7L and before stepping on the pedal 10 of the right-foot side pedal unit 7R, tension is generated in the right-foot side extension member 30R of the transmission mechanism 30 by the pedal stepping force acting on the pedal 10 of the left-foot side pedal unit 7L, and the seating portion 3 will yaw and turn so that the user U's right hip joint moves forward. Here, the crank angle θ1 after stepping on the pedal 10 of the left-foot side pedal unit 7L and before stepping on the pedal 10 of the right-foot side pedal unit 7R means the crank angle θ1 after the depression of the pedal 10 of the left-foot side pedal unit 7L starts and before the depression of the pedal 10 of the right-foot side pedal unit 7R starts. And in the present embodiment, the crank angle θ1 after stepping on the pedal 10 of the left-foot side pedal unit 7L and before stepping on the pedal 10 of the right-foot side pedal unit 7R corresponds to the range of 260 degrees to 80 degrees. When the crank angle θ1 is in the range of 260 degrees to 80 degrees, the length of the right-foot side extension member 30R is appropriately adjusted so that tension is generated in the right-foot side extension member 30R.

[0034] In this way, after stepping on the right foot and before stepping on the left foot, when the seating part 3 yaw-turns so that the left hip joint moves forward, the stepping on of the left foot will be induced. Similarly, after stepping on the left foot and before stepping on the right foot, when the seating part 3 yaw-turns so that the right hip joint moves forward, the stepping on of the right foot will be induced. Therefore, as long as the first step of the rowing motion can be executed, the subsequent steps will be induced each time, so the continuity of the rowing motion using the rowing exercise device 2 is improved.

[0035] The first embodiment of the present disclosure has been described above. The first embodiment has the following features.

[0036] The rowing exercise system 100 includes a rowing exercise device 2 having pedals 10 of a pair of pedal units 7, a chair 1 having a seating part 3 pivotable about a yaw axis, and a transmission mechanism 30 that transmits the pedal stepping force on the pedal 10 of one of the pedal units 7 to the seating part 3 so as to induce the stepping on of the pedal 10 of the other pedal unit 7. According to the above configuration, the continuity of the rowing motion using the rowing exercise device 2 can be realized at a high level.

[0037] The transmission mechanism 30 is configured to pivot the seating part 3 about the yaw axis after stepping on the pedal 10 of one of the right-foot side pedal units 7R and before stepping on the pedal 10 of the other left-foot side pedal unit 7L. According to the above configuration, the stepping on of the left foot can be efficiently induced.

[0038] The transmission mechanism 30 includes a right-foot side extension member 30R that extends from an interlocking portion 11 (right-foot side interlocking portion) that rotates around the crankshaft 8a in conjunction with the pedal 10 (right-foot side pedal) of the right-foot side pedal unit 7R to the right-foot side surface 3R (right-foot side) of the seating portion 3, and a left-foot side extension member 30L that extends from an interlocking portion 11 (left-foot side interlocking portion) that rotates around the crankshaft 8a in conjunction with the pedal 10 (left-foot side pedal) of the left-foot side pedal unit 7L to the left-foot side surface 3L (left-foot side) of the seating portion 3. According to the above configuration, a transmission mechanism 30 with a simple configuration can be realized.

[0039] In addition, when the right-foot side extension member 30R and the left-foot side extension member 30L include springs and dampers, the turning operation of the seating portion 3 can be slightly delayed. Also, it is possible to prevent an impact load from acting on the seating portion 3.

[0040] Note that the first embodiment can be modified as follows, for example.

[0041] In the first embodiment, after stepping on the right foot and before stepping on the left foot, the seating portion 3 yaws so that the left hip joint moves forward, and thus the stepping on the left foot is induced. However, there are also users U for whom stepping on the right foot is induced when the left hip joint moves forward. This type of user U tends to use the twisting of the torso as a trigger for movement. In this case, the interlocking angle θ2 is set to an arbitrary value between 180 degrees and 360 degrees.

[0042] As a result, after stepping on the pedal 10 of the right-foot side pedal unit 7R and before stepping on the pedal 10 of the left-foot side pedal unit 7L, tension is generated in the right-foot side extension member 30R of the transmission mechanism 30 by the pedal stepping force acting on the pedal 10 of the right-foot side pedal unit 7R, and the seating part 3 yaw-rotates so that the right hip joint of the user U moves forward. Similarly, after stepping on the pedal 10 of the left-foot side pedal unit 7L and before stepping on the pedal 10 of the right-foot side pedal unit 7R, tension is generated in the left-foot side extension member 30L of the transmission mechanism 30 by the pedal stepping force acting on the pedal 10 of the left-foot side pedal unit 7L, and the seating part 3 yaw-rotates so that the left hip joint of the user U moves forward.

[0043] As a result, after stepping on the right foot and before stepping on the left foot, the seating part 3 yaw-rotates so that the right hip joint moves forward, thereby inducing the stepping on of the left foot. Similarly, after stepping on the left foot and before stepping on the right foot, the seating part 3 yaw-rotates so that the left hip joint moves forward, thereby inducing the stepping on of the right foot. Therefore, if the first stepping of the pedaling motion can be executed, the subsequent steps will be induced each time, so the continuity of the pedaling motion using the pedaling exercise device 2 is improved.

[0044] (Second Embodiment) Next, with reference to FIG. 4, a second embodiment of the present disclosure will be described. Hereinafter, the description will focus on the differences between this embodiment and the above-described first embodiment, and overlapping descriptions will be omitted.

[0045] In this embodiment, the transmission mechanism 30 includes an endless belt 40 that circulates by the rotation of the crankshaft 8, and a conversion mechanism 41 that converts the circulating movement of the endless belt 40 into a reciprocating turning movement of the seating part 3. The endless belt 40 is a specific example of an endless member.

[0046] The conversion mechanism 41 includes a belt support shaft 41a, a yaw rotation gear 41b, a link 41c, a piston 41d, a cylinder 41e, and a seating beam 41f.

[0047] The belt support shaft 41a is rotatably supported by the equipment main body 6 and has a rotation axis parallel to the width direction.

[0048] The endless belt 40 is hung on the crankshaft 8 and the belt support shaft 41a. When the crankshaft 8 rotates, the belt support shaft 41a rotates at the same rotational speed through the circulating travel of the endless belt 40.

[0049] The yaw turning gear 41b is rotatably supported by the equipment main body 6 and has a rotation axis parallel to the vertical direction. The yaw turning gear 41b is engaged with the belt support shaft 41a. The belt support shaft 41a and the yaw turning gear 41b constitute a bevel gear.

[0050] The piston 41d is guided by the cylinder 41e so as to be reciprocally movable in the front-rear direction.

[0051] One end of the link 41c is supported by the yaw turning gear 41b, and the other end of the link 41c is supported by the piston 41d. Therefore, when the yaw turning gear 41b rotates, the piston 41d reciprocates in the front-rear direction.

[0052] The seating beam 41f is fixed to the seating part 3 and extends in the left-right direction. The seating beam 41f has a cam groove 41g extending along the longitudinal direction of the seating beam 41f. The piston 41d is provided with a rod 41h inserted into the cam groove 41g.

[0053] Therefore, when the piston 41d reciprocates in the front-rear direction, the seating part 3 together with the seating beam 41f reciprocally turns around the yaw axis.

[0054] According to the above configuration, a transmission mechanism 30 that can directly convert the pedal stepping force into the yaw turning of the seating part 3 is realized.

[0055] (Third Embodiment) Next, referring to FIG. 5, a third embodiment of the present disclosure will be described. Hereinafter, the differences between this embodiment and the above-described first embodiment will be mainly described, and redundant descriptions will be omitted.

[0056] In the above-described first embodiment, the seating portion 3 is configured to be yaw-rotatable.

[0057] On the other hand, in this embodiment, as shown in FIG. 5, the seating portion 3 is configured to be roll-rotatable. That is, in this embodiment, the chair 1 includes a chair body 50, a rail 51, a pair of return springs 52, and the seating portion 3.

[0058] The chair body 50 is supported by the support legs 4 shown in FIG. 1. The rail 51 is supported by the chair body 50. The rail 51 is curved so as to be convex upward. The seating portion 3 is supported by the rail 51 so as to be movable along the rail 51. Therefore, the seating portion 3 is configured to be roll-rotatable. The roll rotation axis 3C of the seating portion 3 is set below the seating portion 3 when the seating portion 3 is located at the top of the rail 51 as shown in FIG. 5, that is, when the seating portion 3 is in the neutral position. However, alternatively, the rotation axis 3C may be above the seating portion 3 when the seating portion 3 is in the neutral position. In this case, the rail 51 will be curved so as to be convex downward.

[0059] The pair of return springs 52 are compression coil springs that return the seating portion 3 to the above-described neutral position.

[0060] The chair 1 further includes a right-foot side guide 53R and a left-foot side guide 53L. The right-foot side guide 53R and the left-foot side guide 53L are supported by the chair body 50 of the chair 1.

[0061] With the above configuration, the right leg side extension member 30R of the transmission mechanism 30 extends from the interlocking portion 11 of the right leg side pedal unit 7R through the right leg side guide 53R to the right leg side surface 3R of the seating portion 3. Similarly, the left leg side extension member 30L of the transmission mechanism 30 extends from the interlocking portion 11 of the left leg side pedal unit 7L through the left leg side guide 53L to the left leg side surface 3L of the seating portion 3.

[0062] Even with the above configuration, the transmission mechanism 30 transmits the pedal stepping force on the pedal 10 of one pedal unit 7 to the seating portion 3 so as to induce the stepping on of the pedal 10 of the other pedal unit 7 by stepping on the pedal 10 of one pedal unit 7. Specifically, the transmission mechanism 30 is configured to rotate the seating portion 3 around the turning axis 3C as the rolling axis after stepping on the pedal 10 of one pedal unit 7 and before stepping on the pedal 10 of the other pedal unit 7.

[0063] In the first embodiment, the seating portion 3 yaw-turns so that the left hip joint moves forward after stepping on the right foot and before stepping on the left foot, and thus the stepping on of the left foot is induced.

[0064] Similarly, in this embodiment, the seating portion 3 roll-turns so that the left hip joint moves to the left after stepping on the right foot and before stepping on the left foot, and thus the stepping on of the left foot is induced. However, alternatively, the seating portion 3 may be configured to roll-turn so that the right hip joint moves to the right after stepping on the right foot and before stepping on the left foot, thereby inducing the stepping on of the left foot. As described above, the user U can select which configuration to adopt according to their preference.

[0065] (Fourth Embodiment) Next, with reference to FIG. 6, the fourth embodiment of the present disclosure will be described. Hereinafter, the description will focus on the differences between this embodiment and the third embodiment, and duplicate descriptions will be omitted.

[0066] In this embodiment, the transmission mechanism 30 includes an endless belt 60 that circulates due to the rotation of the crankshaft 8, and a conversion mechanism 61 that converts the circulating movement of the endless belt 60 into the reciprocating turning movement of the seating part 3. The endless belt 60 is a specific example of an endless member.

[0067] The conversion mechanism 61 includes a belt support shaft 61a, a yaw turning gear 61b, a transmission belt 61c, a pulley 61d, a link 61e, a piston 61f, and a cylinder 61g.

[0068] The belt support shaft 61a is rotatably supported by the equipment main body 6 and has a rotation axis parallel to the width direction.

[0069] The endless belt 60 is hung on the crankshaft 8 and the belt support shaft 61a. When the crankshaft 8 rotates, the belt support shaft 61a rotates at the same rotational speed through the circulating movement of the endless belt 60.

[0070] The yaw turning gear 61b is rotatably supported by the equipment main body 6 and has a rotation axis parallel to the vertical direction. The yaw turning gear 61b is engaged with the belt support shaft 61a. The belt support shaft 61a and the yaw turning gear 61b constitute a bevel gear.

[0071] The pulley 61d is rotatably supported by the chair body 50 of the seating part 3 and has a rotation axis parallel to the vertical direction. The transmission belt 61c is hung between the yaw turning gear 61b and the pulley 61d.

[0072] The piston 61f is guided by the cylinder 61g so as to be reciprocally movable in the width direction.

[0073] One end of the link 61e is supported by the pulley 61d, and the other end of the link 61e is supported by the piston 61f. Therefore, when the pulley 61d rotates, the piston 61f reciprocates in the width direction.

[0074] Similar to FIG. 5, the seating portion 3 is rotatably supported about a roll axis by the chair body 50, the rails 51, and a pair of return springs 52. The piston 61f is elastically fixed to the seating portion 3. Therefore, when the piston 61f reciprocates in the width direction, the seating portion 3 reciprocally rolls and turns left and right along the rails 51.

[0075] According to the above configuration, a transmission mechanism 30 that can directly convert the pedal stepping force into the roll rotation of the seating portion 3 is realized.

[0076] As described above, the first to fourth embodiments of the present disclosure have been described. The above embodiments can be implemented in combination with each other.

[0077] In each of the above embodiments, the seating portion 3 is configured to be capable of yaw rotation or roll rotation. However, alternatively, the seating portion 3 may be configured to be capable of both yaw rotation and roll rotation.

[0078] Also, in FIG. 3, by expanding the radius of the circular motion around the crankshaft 8a of the interlocking portion 11, the amplitude of the yaw rotation of the seating portion 3 can be expanded. Therefore, the leg rowing exercise device 2 may be configured to be able to adjust the distance from the crankshaft 8a of the interlocking portion 11 according to the flexibility of the user U's trunk or the like.

Explanation of Reference Numerals

[0079] 1 Chair 2 Leg rowing exercise device 7 Pedal unit 30 Transmission mechanism 100 Leg rowing exercise system

Claims

1. A leg pedaling exercise device having a pair of pedals, A chair having a seating portion rotatable about a swivel axis of at least one of a yaw axis or a roll axis, A transmission mechanism that transmits the pedal stepping force on one of the pedals to the seating portion so as to induce stepping on the other pedal by stepping on one of the pedals, Including, A leg pedaling exercise system.

2. In the leg pedaling exercise system according to Claim 1, The transmission mechanism is configured to rotate the seating portion about the yaw axis after stepping on one of the pedals and before stepping on the other pedal. A leg pedaling exercise system.

3. In the leg pedaling exercise system according to Claim 1, The transmission mechanism is configured to rotate the seating portion about the roll axis after stepping on one of the pedals and before stepping on the other pedal. A leg pedaling exercise system.

4. A leg pedaling exercise system according to any one of Claims 1 to 3, The transmission mechanism is A right leg side extension member extending from a right leg side interlocking portion that rotates about a crank shaft in conjunction with a right leg side pedal to the right leg side of the seating portion, A left leg side extension member extending from a left leg side interlocking portion that rotates about the crank shaft in conjunction with a left leg side pedal to the left leg side of the seating portion, Including, A leg pedaling exercise system.

5. A leg pedaling exercise system according to any one of Claims 1 to 3, The transmission mechanism is An endless member that circulates by the rotation of a crank shaft, A conversion mechanism that converts the circulating movement of the endless member into a reciprocating turning movement of the seating portion, Including, A leg pedaling exercise system.

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