Foot sculling exercise equipment

Abstract

To provide a rowing exercise machine expanding a stroke in the longitudinal direction of the feet.SOLUTION: A rowing exercise machine 1 includes a crank arm 10, a pedal base 11 freely rotatable with respect to the crank arm 10, a pedal slider 12 freely movable in the longitudinal direction with respect to the pedal base 11 and on which a user U places the feet, and an interlocking member 13. The interlocking member 13 interlocks movement of the pedal base 11 and movement of the pedal slider 12 relative to the pedal base 11 such that when the pedal base 11 moves forward, the pedal slider 12 moves forward relative to the pedal base 11, and when the pedal base 11 moves backward, the pedal slider 12 moves backward relative to the pedal base 11.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to rowing exercise equipment.

Background Art

[0002] Patent Document 1 discloses rowing exercise equipment including a pair of left and right rowing pedals. This rowing exercise equipment realizes a rowing motion in which both feet are alternately stepped forward.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the stroke in the front-rear direction of the foot can only be ensured by the length of the crank arm.

[0005] An object of the present disclosure is to provide a technique for expanding the stroke in the front-rear direction of the foot.

Means for Solving the Problems

[0006] According to an aspect of the present disclosure, a crank arm, a pedal base rotatable with respect to the crank arm, a pedal slider movable in the front-rear direction with respect to the pedal base and on which the user places the foot, During at least a part of the period in which the pedal base moves forward, the pedal slider moves forward relative to the pedal base, and during at least a part of the period in which the pedal base moves backward, the pedal slider moves backward relative to the pedal base. A linkage member that interlocks the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base. including A leg rowing exercise device is provided. According to the above configuration, the stroke in the front-rear direction of the foot can be enlarged. The linkage member includes a base rotating member that is rotatably provided on the pedal base, rotates in a first rotation direction when the pedal base moves forward, and rotates in a second rotation direction opposite to the first rotation direction when the pedal base moves backward. The linkage member may interlock the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the base rotating member and the relative movement of the pedal slider with respect to the pedal base. The linkage member A slider rack provided on the pedal slider, A pinion rotatably provided on the pedal base and meshing with the slider rack, further includes The linkage member may interlock the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the base rotating member and the rotation of the pinion. The linkage member may interlock the rotation of the base rotating member and the rotation of the pinion via at least one gear. The linkage member may interlock the rotation of the base rotating member and the rotation of the pinion via at least one belt. The pedal base supports the pedal slider so that the pedal slider is movable between a first position and a second position different from the first position. The slider rack includes a fixed rack fixed to the pedal slider, a floating rack provided at an end of the fixed rack and relatively movable with respect to the fixed rack, and a biasing member that biases the floating rack in a direction away from the fixed rack. When the pedal slider reaches the first position, the pinion meshes with the floating rack, and as the floating rack approaches the fixed rack due to the rotation of the pinion, the meshing between the pinion and the floating rack is released, whereby the pinion may start to idle with respect to the floating rack. The interlocking member further includes a pair of pulleys provided on the pedal base, and a slider belt wound around the pair of pulleys and fixed to the pedal slider. The interlocking member may interlock the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the base rotating member and the rotation of the pair of pulleys. The interlocking member may interlock the rotation of the base rotating member and the rotation of the pair of pulleys via at least one gear. The interlocking member may interlock the rotation of the base rotating member and the rotation of the pair of pulleys via at least one belt. The interlocking member may interlock the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the crank arm with respect to the pedal base and the relative movement of the pedal slider with respect to the pedal base. The interlocking member includes a cam groove provided in the pedal slider. A contact member that is rotatably supported by the pedal base and constrained by the cam groove is provided, and a swing arm that rotates in conjunction with the rotation of the crank arm with respect to the pedal base, may be included. The rotation axis of the swing arm with respect to the pedal base may be disposed above the rotation axis of the crank arm with respect to the pedal base.

Advantages of the Invention

[0007] According to the present disclosure, the stroke in the front-rear direction of the foot can be enlarged.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Mode for Carrying Out the Invention

[0009] (First Embodiment) Hereinafter, the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIGS. 1 and 2 show a state in which the user U is performing a pedaling exercise using the pedaling exercise device 1.

[0010] As shown in FIG. 1, the user U performs desk work using a laptop computer (not shown) placed on the desk 3 while sitting on the chair 2. The pedaling exercise device 1 is placed under the desk 3, and the user U can perform a pedaling exercise using the pedaling exercise device 1 during desk work.

[0011] As shown in FIG. 2, the pedaling exercise device 1 includes an exercise device main body 4, a pair of pedal units 5, and a crankshaft 6. The pair of pedal units 5 are connected to each other via the crankshaft 6, and the crankshaft 6 is rotatably supported by the exercise device main body 4. The user U performs a pedaling exercise by alternately stepping forward with both feet while placing both feet on the pair of pedal units 5. The exercise device main body 4 includes a load device (not shown) that applies a load to the rotation of the crankshaft 6. The load device is typically an electromagnetic brake. The pair of pedal units 5 include a left pedal unit 5L and a right pedal unit 5R. Since the left pedal unit 5L and the right pedal unit 5R have the same shape, the left pedal unit 5L will be described in detail below, and the description of the right pedal unit 5R will be omitted.

[0012] FIG. 3 shows a side view of the left pedal unit 5L. The exercise device main body 4 is located in front of the paper surface of FIG. 3. As shown in FIG. 3, the left pedal unit 5L includes a crank arm 10, a pedal base 11, a pedal slider 12, and an interlocking member 13.

[0013] The crank arm 10 is fixed to the end of the crankshaft 6 extending horizontally as shown in FIG. 2, and extends in a direction orthogonal to the longitudinal direction of the crankshaft 6. The crank arm 10 has a shaft side end portion 10a and a base side end portion 10b. The shaft side end portion 10a of the crank arm 10 is fixed to the crankshaft 6.

[0014] The pedal base 11 extends in the front-rear direction and is connected to the base side end portion 10b of the crank arm 10 so as to be rotatable (pitch-rotatable) with respect to the base side end portion 10b of the crank arm 10. The pedal base 11 has a base front end portion 11a and a base rear end portion 11b. The base side end portion 10b of the crank arm 10 is connected to the base front end portion 11a of the pedal base 11.

[0015] The pedal slider 12 is a portion on which the left foot of the user U is placed and extends along the longitudinal direction of the pedal base 11. The pedal slider 12 is supported by the pedal base 11 so as to be movable in the front-rear direction with respect to the pedal base 11. That is, the pedal slider 12 is supported by the pedal base 11 so as to be movable along the longitudinal direction of the pedal base 11. The pedal slider 12 is typically supported by the pedal base 11 so as to be movable via a linear guide (not shown).

[0016] The interlocking member 13 interlocks the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 such that when the pedal base 11 moves forward, the pedal slider 12 moves relatively forward with respect to the pedal base 11, and when the pedal base 11 moves backward, the pedal slider 12 moves relatively backward with respect to the pedal base 11. In other words, if the pedal base 11 does not move back and forth, the pedal slider 12 cannot move back and forth relatively with respect to the pedal base 11. In this specification, "interlock" means "a plurality of locations move in synchronization".

[0017] The interlocking member 13 includes a base rack 14, a slider rack 15, a wheel 16, and a plurality of intermediate gears 17 and a pinion 18.

[0018] The base rack 14 is installed on the installation floor F of the foot trough exercise device 1 and extends in the front-rear direction. The base rack 14 is installed so that its relative position with respect to the exercise device main body 4 does not change. Typically, the base rack 14 is fixed to the exercise device main body 4. Alternatively, the base rack 14 may be fixed to the installation floor F.

[0019] The slider rack 15 is fixed to the pedal slider 12 and extends along the longitudinal direction of the pedal slider 12.

[0020] The wheel 16 is a specific example of a base rotating member and is rotatably provided at the base rear end portion 11b of the pedal base 11. Therefore, the pedal base 11 is supported by the crank arm 10 and the wheel 16. In the present embodiment, the wheel 16 is a gear and meshes with the base rack 14. The wheel 16 rotates in the forward direction (the first rotation direction) when the pedal base 11 moves forward, and rotates in the reverse direction (the second rotation direction) opposite to the forward direction when the pedal base 11 moves backward. In other words, the wheel 16 rotates clockwise when the pedal base 11 moves forward and rotates counterclockwise when the pedal base 11 moves backward.

[0021] The plurality of intermediate gears 17 includes three intermediate gears 17. The three intermediate gears 17 are rotatably provided on the pedal base 11. The three intermediate gears 17 include a first intermediate gear 17a, a second intermediate gear 17b, and a third intermediate gear 17c. The first intermediate gear 17a meshes with the wheel 16. The second intermediate gear 17b is disposed between the first intermediate gear 17a and the third intermediate gear 17c and meshes with the first intermediate gear 17a and the third intermediate gear 17c. The third intermediate gear 17c meshes with the pinion 18.

[0022] The pinion 18 is rotatably provided on the pedal base 11 and meshes with the slider rack 15 of the pedal slider 12.

[0023] Then, as shown in FIG. 4, when the pedal base 11 moves forward, the wheel 16 rotates clockwise. When the wheel 16 rotates clockwise, the first intermediate gear 17a rotates counterclockwise, the second intermediate gear 17b rotates clockwise, the third intermediate gear 17c rotates counterclockwise, and the pinion 18 rotates clockwise. When the pinion 18 rotates clockwise, the pedal slider 12 moves forward relative to the pedal base 11. In short, when the pedal base 11 moves forward, the pedal slider 12 moves forward relative to the pedal base 11.

[0024] Conversely, when the pedal base 11 moves backward, the wheel 16 rotates counterclockwise. When the wheel 16 rotates counterclockwise, the first intermediate gear 17a rotates clockwise, the second intermediate gear 17b rotates counterclockwise, the third intermediate gear 17c rotates clockwise, and the pinion 18 rotates counterclockwise. When the pinion 18 rotates counterclockwise, the pedal slider 12 moves backward relative to the pedal base 11. In short, when the pedal base 11 moves backward, the pedal slider 12 moves backward relative to the pedal base 11.

[0025] Therefore, by providing the linkage member 13, the foot pedaling exercise device 1 can expand the stroke in the front-rear direction of the foot during the foot pedaling exercise.

[0026] The first embodiment has been described above. The above embodiment has the following features.

[0027] As shown in FIGS. 1 to 4, the rowing exercise device 1 includes a crank arm 10, a pedal base 11 rotatable relative to the crank arm 10, a pedal slider 12 movable back and forth relative to the pedal base 11 and on which the user U places their feet, and an interlocking member 13. When the pedal base 11 moves forward, the interlocking member 13 causes the pedal slider 12 to move forward relative to the pedal base 11, and when the pedal base 11 moves backward, the interlocking member 13 causes the pedal slider 12 to move backward relative to the pedal base 11, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11. According to the above configuration, the stroke of the foot in the front-rear direction during rowing exercise can be enlarged. Therefore, since the rowing exercise can be performed while greatly extending and flexing the knee joint and ankle joint, the rowing exercise can be performed with high exercise efficiency.

[0028] Further, the interlocking member 13 includes a wheel 16 (base rotation member) rotatably provided on the pedal base 11, which rotates clockwise when the pedal base 11 moves forward and rotates counterclockwise when the pedal base 11 moves backward. The interlocking member 13 interlocks the rotation of the wheel 16 and the relative movement of the pedal slider 12 relative to the pedal base 11, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11. According to the above configuration, the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11 can be interlocked with a simple configuration.

[0029] Furthermore, the interlocking member 13 further includes a slider rack 15 provided on the pedal slider 12 and a pinion 18 rotatably provided on the pedal base 11 and meshing with the slider rack 15. The interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pinion 18, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11. According to the above configuration, the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11 can be interlocked with a simple configuration.

[0030] Further, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pinion 18 via three intermediate gears 17. According to the above configuration, the rotation of the wheel 16 and the rotation of the pinion 18 can be interlocked with a simple configuration.

[0031] The interlocking member 13 may interlock the rotation of the wheel 16 and the rotation of the pinion 18 via one intermediate gear 17.

[0032] The interlocking member 13 can interlock the rotation of the wheel 16 and the rotation of the pinion 18 via an odd number of intermediate gears 17, such as five or seven.

[0033] Alternatively, a plurality of intermediate gears 17 and pinions 18 may be omitted, and the wheel 16 may be configured to mesh with the base rack 14 and the slider rack 15 simultaneously.

[0034] (Second Embodiment) Next, referring to FIG. 5, a second 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.

[0035] In the above-described first embodiment, as shown in FIG. 3, the wheel 16 and the pinion 18 are interlocked via a plurality of intermediate gears 17.

[0036] In contrast, in this embodiment, as shown in FIG. 5, a plurality of intermediate gears 17 are omitted. Instead, the interlocking member 13 includes a wheel-side pulley 19 provided on the wheel 16, a pinion-side pulley 20 provided on the pinion 18, and a belt 21 wound around the wheel-side pulley 19 and the pinion-side pulley 20. Then, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pinion 18 via the belt 21. According to the above configuration, the rotation of the wheel 16 and the rotation of the pinion 18 can be interlocked with a simple configuration.

[0037] Note that the wheel-side pulley 19 and the pinion-side pulley 20 are typically timing pulleys. The belt 21 is typically a timing belt.

[0038] Also, the interlocking member 13 may interlock the rotation of the wheel 16 and the rotation of the pinion 18 via a plurality of belts.

[0039] (Third Embodiment) Next, referring to FIG. 6, a third embodiment of the present disclosure will be described. Hereinafter, differences between the present embodiment and the first embodiment will be mainly described, and overlapping descriptions will be omitted.

[0040] In the first embodiment, as shown in FIG. 3, the wheel 16 is a gear and meshes with the base rack 14.

[0041] In contrast, in the present embodiment, as shown in FIG. 6, the base rack 14 is omitted. When the pedal base 11 moves forward, the wheel 16 rotates forward due to the friction with the installation floor F, and when the pedal base 11 moves backward, the wheel 16 rotates backward due to the friction with the installation floor F.

[0042] A gear 16a that is smaller in diameter than the wheel 16 and meshes with the first intermediate gear 17a is provided on the wheel 16. The gear 16a is fixed to the wheel 16.

[0043] According to the above configuration, since the base rack 14 is omitted, the leg-rowing exercise device 1 can be realized at low cost.

[0044] (Fourth Embodiment) Next, referring to FIG. 7, a fourth embodiment of the present disclosure will be described. Hereinafter, differences between the present embodiment and the third embodiment will be mainly described, and overlapping descriptions will be omitted.

[0045] In the above-described third embodiment, as shown in FIG. 6, the wheel 16 may slide with respect to the installation floor F. For example, when the wheel 16 slides with respect to the installation floor F when the pedal base 11 moves forward, the relative forward movement of the pedal slider 12 with respect to the pedal base 11 is inhibited, so the center of the stroke of the relative movement of the pedal slider 12 with respect to the pedal base 11 shifts backward. In this case, since the pedaling motion is performed with the knee joint greatly bent, the exercise efficiency will decrease.

[0046] Conversely, when the wheel 16 slides with respect to the installation floor F when the pedal base 11 moves backward, the relative backward movement of the pedal slider 12 with respect to the pedal base 11 is inhibited, so the center of the stroke of the relative movement of the pedal slider 12 with respect to the pedal base 11 shifts forward. In this case, since the pedaling motion is performed with the knee joint greatly extended, the exercise efficiency will decrease.

[0047] Therefore, in the present embodiment, as shown in FIG. 7, the pedal base 11 supports the pedal slider 12 so as to be movable between a front position 12a (first position) where the pedal slider 12 is located at the most forward position and a rear position 12b (second position) which is different from the front position 12a and is located at the most rearward position. Specifically, the pedal base 11 is provided with a front slider stopper 22a provided at the front end portion 11a of the base and abutted by the pedal slider 12 when the pedal slider 12 reaches the front position 12a, and a rear slider stopper 22b provided at the rear end portion 11b of the base and abutted by the pedal slider 12 when the pedal slider 12 reaches the rear position 12b. In short, the front slider stopper 22a prohibits further forward movement of the pedal slider 12 when the pedal slider 12 reaches the front position 12a. The rear slider stopper 22b prohibits further rearward movement of the pedal slider 12 when the pedal slider 12 reaches the rear position 12b. Therefore, the front slider stopper 22a and the rear slider stopper 22b define the range of relative movement of the pedal slider 12 with respect to the pedal base 11.

[0048] The slider rack 15 includes a fixed rack 23 fixed to the pedal slider 12, two floating racks 24 provided at the ends of the fixed rack 23 and movable relative to the fixed rack 23, and two compression coil springs 25 (biasing members) that bias the two floating racks 24 away from the fixed rack 23 respectively. The two floating racks 24 include a front floating rack 24a disposed in front of the fixed rack 23 and a rear floating rack 24b disposed behind the fixed rack 23. The slider rack 15 further includes a front rack stopper 26a and a rear rack stopper 26b. The front rack stopper 26a is disposed further in front of the front floating rack 24a. The rear rack stopper 26b is disposed further behind the rear floating rack 24b. The front floating rack 24a is pressed against the front rack stopper 26a by being biased by the corresponding compression coil spring 25. Similarly, the rear floating rack 24b is pressed against the rear rack stopper 26b by being biased by the corresponding compression coil spring 25.

[0049] In this configuration, when the pedal slider 12 reaches the forward position 12a as the pinion 18 rotates clockwise as shown in FIG. 7, the pinion 18 meshes with the rear floating rack 24b, and the rotation of the pinion 18 causes the rear floating rack 24b to approach the fixed rack 23. As the rear floating rack 24b approaches the fixed rack 23, the meshing between the pinion 18 and the rear floating rack 24b is released, and thereby the pinion 18 begins to idle relative to the rear floating rack 24b.

[0050] After that, when the pedal slider 12 reaches the forward position 12a and the pedal base 11 starts to move backward, causing the pinion 18 to rotate counterclockwise, the rear floating rack 24b moves away from the fixed rack 23 by the spring restoring force of the corresponding compression coil spring 25. When the pinion 18 meshes with the rear floating rack 24b, the rear floating rack 24b hits the rear rack stopper 26b. As a result, the rotation of the pinion 18 is received by the rear rack stopper 26b, and the pedal slider 12 starts to move backward relative to the pedal base 11. At this time, the pinion 18 changes from a state of meshing only with the rear floating rack 24b to a state of meshing with both the rear floating rack 24b and the fixed rack 23, and then meshes only with the fixed rack 23.

[0051] Even when the pinion 18 continues to rotate counterclockwise and the pedal slider 12 reaches the rear position 12b, the pinion 18 similarly starts to idle with respect to the front floating rack 24a.

[0052] According to the above configuration, even if the wheel 16 slides on the installation floor F, the center of the relative movement stroke of the pedal slider 12 with respect to the pedal base 11 does not change. Therefore, since the pedaling motion can be performed while moderately extending and flexing the knee joint, the pedaling motion can be performed with high exercise efficiency.

[0053] As described above, the fourth embodiment has been described. The above embodiment has the following features.

[0054] That is, the pedal base 11 supports the pedal slider 12 so that the pedal slider 12 is movable between a front position 12a (first position) and a rear position 12b (second position) different from the front position 12a. The slider rack 15 includes a fixed rack 23 fixed to the pedal slider 12, a rear free rack 24b provided at an end of the fixed rack 23 and relatively movable with respect to the fixed rack 23, and a compression coil spring 25 (biasing member) that biases the rear free rack 24b in a direction away from the fixed rack 23. When the pedal slider 12 reaches the front position 12a, the pinion 18 meshes with the rear free rack 24b, and as the rear free rack 24b approaches the fixed rack 23 due to the rotation of the pinion 18, the meshing between the pinion 18 and the rear free rack 24b is released, whereby the pinion 18 starts to idle with respect to the rear free rack 24b. According to the above configuration, even when the movement of the pedal base 11 and the rotation of the wheel 16 cannot be properly interlocked, the center of the stroke of the relative movement of the pedal slider 12 with respect to the pedal base 11 does not change.

[0055] (Fifth Embodiment) Next, with reference to FIG. 8, a fifth embodiment of the present disclosure will be described. Hereinafter, the differences between the present embodiment and the first embodiment will be mainly described, and redundant descriptions will be omitted.

[0056] In the present embodiment, the interlocking member 13 includes a pair of slider pulleys 30, a slider belt 31, a wheel-side pulley 32, and a drive belt 33.

[0057] The pair of slider pulleys 30 are rotatably provided on the pedal base 11. The pair of slider pulleys 30 are arranged apart from each other in the longitudinal direction of the pedal base 11. The pair of slider pulleys 30 include a front slider pulley 30a arranged relatively forward and a rear slider pulley 30b arranged relatively rearward. The pair of slider pulleys 30 are typically timing pulleys.

[0058] The slider belt 31 is looped around a pair of slider pulleys 30. The slider belt 31 is fixed to the pedal slider 12. Thus, when the slider belt 31 runs, the pedal slider 12 moves relative to the pedal base 11 at the same speed. The slider belt 31 is typically a timing belt.

[0059] The wheel-side pulley 32 is fixed to the wheel 16. The wheel-side pulley 32 is typically a timing pulley.

[0060] The drive belt 33 is looped around the wheel-side pulley 32 and the rear slider pulley 30b. The drive belt 33 is typically a timing belt.

[0061] With the above configuration, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11.

[0062] That is, when the pedal base 11 moves forward, the wheel 16 rotates clockwise together with the wheel-side pulley 32. When the wheel-side pulley 32 rotates clockwise, the pair of slider pulleys 30 rotate clockwise along with the running of the drive belt 33. When the pair of slider pulleys 30 rotate clockwise, the pedal slider 12 moves forward relative to the pedal base 11 along with the running of the slider belt 31.

[0063] Conversely, when the pedal base 11 moves backward, the wheel 16 rotates counterclockwise together with the wheel-side pulley 32. When the wheel-side pulley 32 rotates counterclockwise, the pair of slider pulleys 30 rotate counterclockwise along with the running of the drive belt 33. When the pair of slider pulleys 30 rotate counterclockwise, the pedal slider 12 moves backward relative to the pedal base 11 along with the running of the slider belt 31.

[0064] The fifth embodiment has been described above. The above embodiment has the following features.

[0065] That is, the interlocking member 13 further includes a pair of slider pulleys 30 (front slider pulley 30a and rear slider pulley 30b) provided on the pedal base 11, and a slider belt 31 that is wound around the pair of slider pulleys 30 and fixed to the pedal slider 12. The interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11. According to the above configuration, the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 can be interlocked with a simple configuration.

[0066] Further, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via a drive belt 33. According to the above configuration, the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 can be interlocked with a simple configuration. Note that the interlocking member 13 may interlock the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via a plurality of belts.

[0067] (Sixth Embodiment) Next, with reference to FIG. 9, a sixth embodiment of the present disclosure will be described. Hereinafter, the differences between the present embodiment and the above-described fifth embodiment will be mainly described, and overlapping descriptions will be omitted.

[0068] In the above-described fifth embodiment, as shown in FIG. 8, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via a drive belt 33.

[0069] In contrast, in the present embodiment, as shown in FIG. 9, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via an intermediate gear 34.

[0070] The intermediate gear 34 is rotatably provided on the pedal base 11. The intermediate gear 34 meshes with the wheel 16 and the rear slider pulley 30b.

[0071] Therefore, when the pedal base 11 moves forward and the wheel 16 rotates forward, the intermediate gear 34 rotates reversely, and the rear slider pulley 30b rotates forward. When the rear slider pulley 30b rotates forward, the pedal slider 12 moves forward relative to the pedal base 11 along with the running of the slider belt 31.

[0072] Conversely, when the pedal base 11 moves backward and the wheel 16 rotates reversely, the intermediate gear 34 rotates forward, and the rear slider pulley 30b rotates reversely. When the rear slider pulley 30b rotates reversely, the pedal slider 12 moves backward relative to the pedal base 11 along with the running of the slider belt 31.

[0073] The sixth embodiment has been described above. The above embodiment has the following features.

[0074] That is, the interlocking member 13 interlocks the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via the intermediate gear 34. According to the above configuration, the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 can be interlocked with a simple configuration.

[0075] Note that the interlocking member 13 may interlock the rotation of the wheel 16 and the rotation of the pair of slider pulleys 30 via an odd number of intermediate gears 34, such as three.

[0076] (Seventh Embodiment) Next, the seventh embodiment will be described with reference to FIGS. 10 to 11. Hereinafter, the description will focus on the differences between the present embodiment and the first embodiment, and the overlapping descriptions will be omitted.

[0077] FIG. 10 shows a side view of the right pedal unit 5R. FIG. 11 shows a front view of the right pedal unit 5R observed along the arrow X in FIG. 10.

[0078] In the first embodiment described above, as shown in FIG. 3, the interlocking member 13 interlocks the rotation of the wheel 16 and the relative movement of the pedal slider 12 with respect to the pedal base 11, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11.

[0079] In contrast, in the present embodiment, as shown in FIGS. 10 and 11, the interlocking member 13 interlocks the rotation of the crank arm 10 with respect to the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11. Specifically, it is as follows.

[0080] As shown in FIGS. 10 and 11, the interlocking member 13 has a cam groove holder 40 and a swing arm 41.

[0081] As shown in FIG. 11, the cam groove holder 40 includes a holder horizontal portion 40a that projects parallel to the longitudinal direction of the crankshaft 6 from the slider front end portion 12f of the pedal slider 12, and a holder vertical portion 40b that extends downward from the tip of the holder horizontal portion 40a. The holder horizontal portion 40a projects so as to be away from the exercise equipment main body 4. As shown in FIG. 10, a cam groove 42 is formed in the holder vertical portion 40b. The cam groove 42 typically extends along a direction orthogonal to the longitudinal direction of the pedal slider 12.

[0082] As shown in FIG. 11, an arm shaft 43 extending parallel to the longitudinal direction of the crankshaft 6 is supported by the pedal base 11 so as to be rotatable with respect to the pedal base 11. The swing arm 41 is disposed between the pedal base 11 and the holder vertical portion 40b of the cam groove holder 40. The swing arm 41 extends straight in a direction orthogonal to the arm shaft 43. In the side view shown in FIG. 10, the longitudinal direction of the swing arm 41 is parallel to the longitudinal direction of the crank arm 10. As shown in FIG. 11, the swing arm 41 is fixed to the base side end portion 10b of the crank arm 10 via the arm shaft 43. Thereby, the swing arm 41 is rotatably supported with respect to the pedal base 11. When the crank arm 10 rotates forward with respect to the pedal base 11, the swing arm 41 also rotates forward at the same rotational speed with respect to the pedal base 11. Conversely, when the crank arm 10 rotates reversely with respect to the pedal base 11, the swing arm 41 also rotates reversely at the same rotational speed with respect to the pedal base 11. That is, the swing arm 41 rotates in conjunction with the rotation of the crank arm 10 with respect to the pedal base 11. As shown in FIG. 10, the swing arm 41 has a swing arm rotation axis 41c as a rotation axis of the swing arm 41 with respect to the pedal base 11. The swing arm rotation axis 41c of the swing arm 41 is coaxial with the crank arm rotation axis 10c as a rotation axis of the crank arm 10 with respect to the pedal base 11. The swing arm 41 has a tip end 41a and a terminal end 41b. The swing arm rotation axis 41c of the swing arm 41 is disposed at the terminal end 41b of the swing arm 41. A roller 44 as a contact constrained by the cam groove 42 is rotatably provided at the tip end 41a of the swing arm 41. The roller 44 is constrained by the cam groove 42 by being accommodated in the cam groove 42 and moves along the longitudinal direction of the cam groove 42.

[0083] When the pedal base 11 moves forward with the forward rotation of the crank arm 10 with respect to the pedal base 11, the swing arm 41 rotates forward with respect to the pedal base 11, so that the roller 44 moves forward relative to the swing arm rotation axis 41c. As a result, the cam groove holder 40 having the cam groove 42 that restrains the roller 44 moves forward relative to the swing arm rotation axis 41c and thus relative to the pedal base 11. That is, when the crank arm 10 rotates forward with respect to the pedal base 11, the pedal slider 12 moves forward relative to the pedal base 11.

[0084] Also, when the pedal base 11 moves backward with the forward rotation of the crank arm 10 with respect to the pedal base 11, the swing arm 41 rotates forward with respect to the pedal base 11, so that the roller 44 moves backward relative to the swing arm rotation axis 41c. As a result, the cam groove holder 40 having the cam groove 42 that restrains the roller 44 moves backward relative to the swing arm rotation axis 41c and thus relative to the pedal base 11. That is, when the crank arm 10 rotates forward with respect to the pedal base 11, the pedal slider 12 moves backward relative to the pedal base 11.

[0085] In short, according to the relative position of the crank arm 10 with respect to the pedal base 11, the pedal slider 12 moves forward or backward relative to the pedal base 11.

[0086] The seventh embodiment has been described above, and the above embodiment has the following features.

[0087] That is, the interlocking member 13 interlocks the rotation of the crank arm 10 with respect to the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11. According to the above configuration, the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 can be interlocked with a simple configuration.

[0088] Further, the interlocking member 13 includes a cam groove 42 and a swing arm 41. The cam groove 42 is provided on the pedal slider 12. The swing arm 41 is rotatably supported by the pedal base 11. A roller 44 as a contact element constrained by the cam groove 42 is provided on the swing arm 41. The swing arm 41 rotates in conjunction with the rotation of the crank arm 10 with respect to the pedal base 11. According to the above configuration, with a simple configuration, the rotational motion of the crank arm 10 can be converted into a relative linear motion of the pedal slider 12 with respect to the pedal base 11.

[0089] Note that, specifically, making the rotation of the crank arm 10 with respect to the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 interlock is equivalent to making the relative circular motion of the roller 44 with respect to the swing arm rotation axis 41c and the relative movement motion of the pedal slider 12 with respect to the pedal base 11 interlock.

[0090] (Modification example) Next, with reference to FIG. 12, a modification example of the above-described seventh embodiment will be described. Hereinafter, the description will focus on the differences between this modification example and the above-described seventh embodiment, and overlapping descriptions will be omitted.

[0091] The swing arm 41 of this modification example shown in FIG. 12 is longer than the swing arm 41 of the above-described seventh embodiment shown in FIG. 10. That is, the arm length D1 of the swing arm 41 of this modification example shown in FIG. 12 is longer than the arm length D1 of the swing arm 41 of the above-described seventh embodiment shown in FIG. 10. The arm length D1 of the swing arm 41 is typically defined by the distance between the swing arm rotation axis 41c and the roller 44 in a side view. According to this modification example, since the relative movement distance of the pedal slider 12 with respect to the pedal base 11 is increased, the stroke in the front-rear direction of the foot during the pedaling motion can be further increased. Therefore, since the pedaling motion can be performed while greatly extending and flexing the knee joint and the ankle joint, the pedaling motion can be performed with high exercise efficiency.

[0092] Incidentally, the swing arm 41 may be made telescopic so that the stroke in the front-rear direction of the foot during the pedaling motion can be flexibly adjusted as needed.

[0093] Also, in the above-described seventh embodiment, as shown in FIG. 10, the swing arm 41 and the crank arm 10 are connected to each other such that their longitudinal directions are parallel to each other in a side view. Therefore, at the timing when the pedal base 11 moves to the most forward position, the pedal slider 12 moves to the most forward position relative to the pedal base 11. Conversely, at the timing when the pedal base 11 moves to the most rearward position, the pedal slider 12 moves to the most rearward position relative to the pedal base 11.

[0094] In contrast, in this modification, as shown in FIG. 12, the swing arm 41 and the crank arm 10 are connected to each other such that the angle between their longitudinal directions is approximately 160 degrees in a side view. Therefore, the pedal slider 12 moves to the most forward position relative to the pedal base 11 prior to the timing when the pedal base 11 moves to the most forward position. Conversely, the pedal slider 12 moves to the most rearward position relative to the pedal base 11 prior to the timing when the pedal base 11 moves to the most rearward position.

[0095] In this way, depending on the setting of the angle formed by the longitudinal direction of the swing arm 41 and the longitudinal direction of the crank arm 10, the timing relationship on the time axis between the timing when the pedal base 11 moves to the most forward or rearward position and the timing when the pedal slider 12 moves to the most forward or rearward position relative to the pedal base 11 can be adjusted.

[0096] (Eighth Embodiment) Next, with reference to FIG. 13, the eighth embodiment will be described. Hereinafter, the description will focus on the differences between the present embodiment and the above-described seventh embodiment, and duplicate descriptions will be omitted. FIG. 13 shows a side view of the right pedal unit 5R.

[0097] In the above-described seventh embodiment, as shown in FIG. 11, the swing arm 41 and the crank arm 10 are connected via an arm shaft 43. That is, as shown in FIG. 10, in a side view, the swing arm rotation axis 41c of the swing arm 41 coincides with the crank arm rotation axis 10c of the crank arm 10.

[0098] In contrast, in the present embodiment, as shown in FIG. 13, the swing arm rotation axis 41c of the swing arm 41 is disposed above the crank arm rotation axis 10c of the crank arm 10.

[0099] A crank arm side pulley 50 is fixed to the base side end portion 10b of the crank arm 10. The crank arm side pulley 50 is typically a timing pulley. A swing arm side pulley 51 is fixed to the end 41b of the swing arm 41. The swing arm side pulley 51 is typically a timing pulley. A swing belt 52 is wound around the crank arm side pulley 50 and the swing arm side pulley 51. The swing belt 52 is typically a timing belt.

[0100] With the above configuration, when the crank arm 10 rotates forward relative to the pedal base 11, the swing arm 41 rotates forward around the swing arm rotation axis 41c along with the running of the swing belt 52. When the swing arm 41 rotates forward around the swing arm rotation axis 41c, the roller 44 moves along a circular orbit 44a indicated by a two-dot chain line. Then, when the roller 44 moves forward relative to the pedal base 11, the pedal slider 12 moves forward relative to the pedal base 11. Conversely, when the roller 44 moves backward relative to the pedal base 11, the pedal slider 12 moves backward relative to the pedal base 11.

[0101] Here, the technical significance of the present embodiment will be described.

[0102] For example, referring to FIG. 10, in the above-described seventh embodiment, when the roller 44 passes below the swing arm rotation axis 41c, the arm length D1 has to be reduced so that the trajectory of the roller 44 does not interfere with the installation floor F. Therefore, the distance by which the roller 44 can move back and forth relative to the pedal base 11 inevitably becomes small, and thus, the relative stroke of the pedal slider 12 with respect to the pedal base 11 cannot be increased.

[0103] In contrast, in the present embodiment, as shown in FIG. 13, since the swing arm rotation axis 41c, which is the center of the circular orbit 44a of the roller 44, is arranged above the crank arm rotation axis 10c, even if the radius of the circular orbit 44a is increased, the circular orbit 44a of the roller 44 is less likely to interfere with the installation floor F. Therefore, in the present embodiment, the distance by which the roller 44 can move back and forth relative to the pedal base 11 can be effectively ensured, so that the relative stroke of the pedal slider 12 with respect to the pedal base 11 can be effectively ensured. That is, since the pedaling motion can be performed while greatly extending and flexing the knee joint, the pedaling motion can be performed with high exercise efficiency.

[0104] The eighth embodiment has been described above, and the above embodiment has the following features.

[0105] That is, the swing arm rotation axis 41c of the rotation of the swing arm 41 with respect to the pedal base 11 is arranged above the crank arm rotation axis 10c of the rotation of the crank arm 10 with respect to the pedal base 11. According to the above configuration, the distance by which the roller 44 can move back and forth relative to the pedal base 11 can be effectively ensured, so that the relative stroke of the pedal slider 12 with respect to the pedal base 11 can be effectively ensured. That is, since the pedaling motion can be performed while greatly extending and flexing the knee joint, the pedaling motion can be performed with high exercise efficiency.

[0106] (Modification) Next, with reference to FIG. 14, a modification of the eighth embodiment will be described. Hereinafter, the differences between this modification and the above-described eighth embodiment will be mainly described, and redundant descriptions will be omitted. FIG. 14 shows a side view of the right pedal unit 5R.

[0107] In the above-described eighth embodiment, as shown in FIG. 13, the rotation of the crank arm 10 and the rotation of the swing arm 41 are interlocked via the swing belt 52.

[0108] On the other hand, in this modification, as shown in FIG. 14, the rotation of the crank arm 10 and the rotation of the swing arm 41 are interlocked via a plurality of intermediate gears 56. The plurality of intermediate gears 56 are all rotatably provided on the pedal base 11. The plurality of intermediate gears 56 include a first intermediate gear 56a, a second intermediate gear 56b, and a third intermediate gear 56c. The first intermediate gear 56a meshes with a crank gear 57 provided on the crank arm rotation axis 10c of the crank arm 10 and rotates together with the crank arm 10. The third intermediate gear 56c meshes with a swing gear 58 provided on the swing arm rotation axis 41c of the swing arm 41 and rotates together with the swing arm 41. The second intermediate gear 56b meshes with the first intermediate gear 56a and the third intermediate gear 56c. With the above configuration, when the crank arm 10 rotates clockwise relative to the pedal base 11, the swing arm 41 rotates clockwise around the swing arm rotation axis 41c along with the rotation of the plurality of intermediate gears 56. As a result, the roller 44 moves along a circular orbit 44a indicated by a two-dot chain line. When the roller 44 moves forward relative to the pedal base 11, the pedal slider 12 moves forward relative to the pedal base 11. Conversely, when the roller 44 moves backward relative to the pedal base 11, the pedal slider 12 moves backward relative to the pedal base 11.

[0109] According to the above configuration, similarly to the eighth embodiment, the relative stroke of the pedal slider 12 with respect to the pedal base 11 can be effectively ensured.

[0110] In the above-described seventh and eighth embodiments, the component that contacts the installation floor F does not necessarily have to be the wheels 16. For example, the base rear end portion 11b of the pedal base 11 may be in direct contact with the installation floor F. Alternatively, the base rear end portion 11b of the pedal base 11 may be supported by a cart that travels on the installation floor F.

[0111] Also, in the first to eighth embodiments, as shown in FIG. 4 for example, when the pedal base 11 moves forward, the pedal slider 12 moves forward relative to the pedal base 11, and when the pedal base 11 moves backward, the pedal slider 12 moves backward relative to the pedal base 11. The interlocking member 13 interlocks the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11. Specifically, the interlocking member 13 causes the pedal slider 12 to move forward relative to the pedal base 11 throughout the period when the pedal base 11 moves forward, and causes the pedal slider 12 to move backward relative to the pedal base 11 throughout the period when the pedal base 11 moves backward, thereby interlocking the movement of the pedal base 11 and the relative movement of the pedal slider 12 relative to the pedal base 11.

[0112] However, instead of this, the interlocking member 13 may interlock the movement of the pedal base 11 and the relative movement of the pedal slider 12 with respect to the pedal base 11 such that the pedal slider 12 moves forward relative to the pedal base 11 during at least a part of the period in which the pedal base 11 moves forward, and the pedal slider 12 moves backward relative to the pedal base 11 during at least a part of the period in which the pedal base 11 moves backward. Such interlocking can typically be realized by a mechanism in which the pinion 18 idles, as described in the fourth embodiment with reference to FIG. 7. Specifically, in FIG. 7, it is conceivable to simultaneously shorten the distance between the front slider stopper 22a and the rear slider stopper 22b, the distance between the front rack stopper 26a and the rear rack stopper 26b, and the length of the fixed rack 23 to actively idle the pinion 18. Also, such interlocking can typically be realized by changing the shape of the cam groove 42, as described in the seventh embodiment with reference to FIG. 10. Specifically, it is conceivable to curve a part of the cam groove 42 along an arc centered on the swing arm rotation axis 41c.

Explanation of Signs

[0113] 1 Leg pedaling exercise equipment 2 Chair 3 Desk 4 Exercise equipment main body 5 Pedal unit 5L Left pedal unit 5R Right pedal unit 6 Crankshaft 10 Crank arm 10a Shaft side end portion 10b Base side end portion 10c Crank arm rotation axis 11 Pedal base 11a Base front end portion 11b Base rear end portion 12 Pedal slider 12a Front position 12b Rear position 12f Slider front end portion 13 Link member 14 Base rack 15 Slide rack 16 Wheel 16a Gear 17 Intermediate gear 17a First intermediate gear 17b Second intermediate gear 17c Third intermediate gear 18 Pinion 19 Wheel-side pulley 20 Pinion-side pulley 21 Belt 22a Front slider stopper 22b Rear slider stopper 23 Fixed rack 24 Movable rack 24a Front movable rack 24b Rear movable rack 25 Compression coil spring 26a Front rack stopper 26b Rear rack stopper 30 Slider pulley 30a Front slider pulley 30b Rear slider pulley 31 Slider belt 32 Wheel-side pulley 33 Drive belt 34 Intermediate gear 40 Cam groove holder 40a Holder horizontal part 40b Holder vertical part 41 Swing arm 41a Tip 41b End 41c Swing arm rotation axis 42 Cam groove 43 Arm shaft 44 Roller 44a Circular orbit 50 Crank arm-side pulley 51 Swing arm-side pulley 52 Swing belt 56 Intermediate gear 56a First intermediate gear 56b Second intermediate gear 56c Third intermediate gear 57 Crank gear 58 Swing gear D1 Arm length F Installation floor U User

Claims

1. A crank arm, a pedal base rotatable with respect to the crank arm, a pedal slider movable back and forth with respect to the pedal base and on which a user places their foot, a linkage member that interlocks the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base such that the pedal slider moves forward relative to the pedal base during at least a part of the period when the pedal base moves forward, and the pedal slider moves backward relative to the pedal base during at least a part of the period when the pedal base moves backward, comprising, the linkage member includes a base rotation member rotatably provided on the pedal base, which rotates in a first rotation direction when the pedal base moves forward and rotates in a second rotation direction opposite to the first rotation direction when the pedal base moves backward, the linkage member interlocks the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the base rotation member and the relative movement of the pedal slider with respect to the pedal base, a leg rowing exercise device.

2. The leg rowing exercise device according to Claim 1, wherein the linkage member, further includes a slider rack provided on the pedal slider, and a pinion rotatably provided on the pedal base and meshing with the slider rack, the linkage member interlocks the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base by interlocking the rotation of the base rotation member and the rotation of the pinion, a leg rowing exercise device.

3. The leg rowing exercise device according to Claim 2, wherein the linkage member interlocks the rotation of the base rotation member and the rotation of the pinion via at least one gear, a leg rowing exercise device.

4. The leg rowing exercise device according to Claim 2, wherein the linkage member interlocks the rotation of the base rotation member and the rotation of the pinion via at least one belt, a leg rowing exercise device.

5. The leg rowing exercise device according to Claim 2, wherein ​ The pedal base supports the pedal slider so that the pedal slider is movable between a first position and a second position different from the first position. The slider rack includes a fixed rack fixed to the pedal slider, a floating rack provided at an end of the fixed rack and movable relative to the fixed rack, and a biasing member that biases the floating rack in a direction away from the fixed rack. When the pedal slider reaches the first position, the pinion meshes with the floating rack, and as the floating rack approaches the fixed rack due to the rotation of the pinion, the meshing between the pinion and the floating rack is released, whereby the pinion begins to idle relative to the floating rack. Leg rowing exercise equipment.

6. The leg rowing exercise equipment according to claim 1, wherein the linkage member further includes a pair of pulleys provided on the pedal base, and a slider belt wound around the pair of pulleys and fixed to the pedal slider, and the linkage member interlocks the rotation of the base rotating member and the rotation of the pair of pulleys to interlock the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base. Leg rowing exercise equipment.

7. The leg rowing exercise equipment according to claim 6, wherein the linkage member interlocks the rotation of the base rotating member and the rotation of the pair of pulleys via at least one gear. Leg rowing exercise equipment.

8. The leg rowing exercise equipment according to claim 6, wherein the linkage member interlocks the rotation of the base rotating member and the rotation of the pair of pulleys via at least one belt. Leg rowing exercise equipment.

9. A crank arm, a pedal base rotatable relative to the crank arm, and a pedal slider movable in the front-rear direction relative to the pedal base and on which a user places their feet. ​ ​ During at least a part of the period when the pedal base moves forward, the pedal slider moves forward relative to the pedal base, and during at least a part of the period when the pedal base moves backward, the pedal slider moves backward relative to the pedal base. A linkage member that interlocks the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base. Including By interlocking the rotation of the crank arm with respect to the pedal base and the relative movement of the pedal slider with respect to the pedal base, the movement of the pedal base and the relative movement of the pedal slider with respect to the pedal base are interlocked. The linkage member is A cam groove provided in the pedal slider; A swing arm that is rotatably supported by the pedal base, provided with a contact that is constrained by the cam groove, and rotates in conjunction with the rotation of the crank arm with respect to the pedal base. Including An ankle exercise device.

10. The ankle exercise device according to claim 9, The rotation axis of the rotation of the swing arm with respect to the pedal base is arranged above the rotation axis of the rotation of the crank arm with respect to the pedal base. An ankle exercise device.

Images