Motion system

Abstract

To provide a technique for achieving a kinetic chain of lower limbs and a trunk when lower limb exercise is performed in a seated posture.SOLUTION: An exercise system 100 includes a pedal exerciser 2 and a chair 1. The pedal exerciser 2 realizes lower limb exercise of involving repetitive extension and flexion of at least knee joints and hip joints. The chair 1 is used by a user U to sit when the user U performs the lower limb exercise using the pedal exerciser 2. The chair 1 includes a seating part 10 on which the user U sits, and a support mechanism 11 for supporting the seating part 10 so that it can rollingly swing. The rolling swing of the seating part 10 during the lower limb exercise generates a kinetic chain of the lower limbs and a trunk. This configuration can thus realize the kinetic chain of the lower limbs and the trunk when the lower limb exercise is performed in a seated posture.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an exercise system that realizes a kinetic chain between the lower limbs and the trunk. [Background technology]

[0002] Patent Document 1 discloses an exercise machine in which the user pedals while in a seated position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-94577 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration of Patent Document 1, when performing pedaling exercise in a seated position, it is desirable to train not only the lower limbs but also the trunk. However, the configuration of Patent Document 1 does not allow training of the lower limbs and the trunk at the same time.

[0005] An object of the present invention is to provide a technique for realizing a kinetic chain between the lower limbs and the trunk when performing lower limb exercises in a seated position. [Means for solving the problem]

[0006] According to a first aspect of the present disclosure, there is provided an exercise system including a lower limb exercise device that realizes lower limb exercise involving repeated extension and flexion of at least the knee joint and hip joint, and a chair on which a user sits when performing the lower limb exercise using the lower limb exercise device, the chair having a seat on which the user sits and a support mechanism that supports the seat so that the seat can roll and swing, and the seat rolls and swings during the lower limb exercise, generating a kinetic chain between the lower limbs and the trunk. With the above configuration, a kinetic chain between the lower limbs and the trunk can be realized when performing lower limb exercise in a seated position. According to a second aspect of the present disclosure, there is provided an exercise system including a lower limb exercise device that realizes lower limb exercise involving repeated extension and flexion of at least the knee joint and hip joint, and an exercise aid that can be mounted on the seat of a chair and on which a user sits when performing the lower limb exercise using the lower limb exercise device, the exercise aid having a seat on which the user sits and a support mechanism that supports the seat so as to be able to roll and swing, and the seat rolls and swings during the lower limb exercise, generating a kinetic chain between the lower limbs and the trunk. With the above configuration, a kinetic chain between the lower limbs and the trunk can be realized when performing lower limb exercise in a seated position. The support mechanism may include a right-leg elastic body arranged under the seat and corresponding to a right-leg ischium, which is an ischium on the right leg side of the user seated on the seat, and a left-leg elastic body arranged under the seat and corresponding to a left-leg ischium, which is an ischium on the left leg side of the user seated on the seat. With the above configuration, the support mechanism can be realized with a simple configuration. The right leg side elastic body and the left leg side elastic body may be bags filled with gas. According to the above configuration, an inexpensive exercise system can be realized. The bag may be semi-spherical and convex downward when the gas is sealed in. With the above-mentioned configuration, effective roll oscillation can be achieved. The right leg side elastic body and the left leg side elastic body may be coil springs. According to the above-mentioned configuration, the right leg side elastic body and the left leg side elastic body can be realized at low cost. The support mechanism may further correct a pitch posture of the user's pelvis. According to the above configuration, the kinetic chain is generated effectively. The support mechanism may further include a coccyx elastic body disposed under the seat and corresponding to the tailbone of the user seated on the seat, and the coccyx elastic body corrects the pitch posture of the pelvis of the user. With the above configuration, the support mechanism can be realized with a simple configuration. The coccyx elastic body may be a bag filled with gas or a coil spring. With the above-mentioned configuration, the coccyx elastic body can be realized at low cost. Effect of the Invention

[0007] According to the present disclosure, a kinetic chain of the lower limbs and the trunk can be achieved when performing lower limb exercises in a seated position. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a state in which a user is performing lower limb exercise using a pedaling exercise machine while remaining in a seated position (first embodiment). [Diagram 2] FIG. 1 is a perspective view of a chair (first embodiment); [Diagram 3] FIG. 1 is a front cross-sectional view of a chair (first embodiment). [Figure 4] FIG. 1 is a plan view of a pelvis (first embodiment). [Diagram 5] FIG. 11 is a perspective view of a chair (second embodiment). [Figure 6] FIG. 11 is a front cross-sectional view of the chair (second embodiment). [Figure 7] FIG. 1 is a front view of a bellows-type balloon (modification example). [Figure 8] FIG. 13 is a front view of the coil spring (modification); DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (First embodiment) Hereinafter, a first embodiment of the present disclosure will be described with reference to FIGS.

[0010] Fig. 1 shows an exercise system 100. As shown in Fig. 1, a user U uses a pedaling exercise machine 2 while sitting on a chair 1 to exercise his / her lower limbs.

[0011] The pedaling exercise device 2 is a specific example of a lower limb exercise device that realizes a lower limb exercise involving repeated extension and flexion of the knee joint, hip joint, and ankle joint. The pedaling exercise device 2 includes a device body 3, a pair of cranks 4, and a pair of pedals 5. The pair of pedals 5 are respectively provided on the pair of cranks 4 so as to be able to rotate freely in pitch. The pair of cranks 4 are provided on the device body 3 so as to be able to rotate freely in pitch. The user U, seated on a chair 1, places both feet F on the pair of pedals 5, respectively, and performs so-called pedaling exercise by stepping out alternately with the right leg RL and the left leg LL. At this time, the knee joints, hip joints, and ankle joints of the right leg RL and the left leg LL are repeatedly extended and flexed. Typically, when the knee joint of the right leg RL is extended, the knee joint of the left leg LL is flexed. When the hip joint of the right leg RL is extended, the hip joint of the left leg LL is flexed. When the ankle joint of the right leg RL is extended, the ankle joint of the left leg LL is flexed. As a result, the pair of pedals 5 rotate around the crankshaft 4a in opposite phases to each other. That is, the foot-pedaling exercise device 2 realizes lower limb exercise in which both feet F describe a circular orbit around the crankshaft 4a.

[0012] The foot-pedaling exercise device 2 is merely one example of a lower limb exercise device. That is, the lower limb exercise device is not limited to the foot-pedaling exercise device 2. The lower limb exercise device may be a device that realizes lower limb exercise by moving both feet F back and forth parallel to the floor while the user U is seated on the chair 1.

[0013] 2 shows a perspective view of the chair 1. As shown, the chair 1 has a chair body 6 and a plurality of legs 7. The chair body 6 is supported by the plurality of legs 7.

[0014] Fig. 3 shows a front cross-sectional view of the chair 1. As shown in Fig. 3, the chair body 6 includes a seating portion 10, a support mechanism 11 that supports the seating portion 10, and a cover 12. The support mechanism 11 is disposed inferior to the seating portion 10. In other words, the seating portion 10 is disposed superior to the support mechanism 11.

[0015] The seating portion 10 is a portion on which the user U sits. The seating portion 10 has a seat surface 10a facing upward and a bottom surface 10b facing downward. As shown in Figs. 2 and 3, the seat surface 10a is slightly inclined so as to become higher toward the posterior. The seating portion 10 is made of a soft material suitable for dispersing pressure between the user U and the seating portion 10 when the user U sits on it. Typically, the seating portion 10 has an open cell structure, such as urethane foam, or a closed cell structure, such as polyethylene foam or rubber sponge.

[0016] The seating part 10 may be formed with a recess for positioning the pelvis of the user U seated on the seating part 10 relative to the seating part 10. Typically, the recess is formed to accommodate the user's buttocks, right thigh, and left thigh. Alternatively, the seating part 10 may have a line drawn on it to indicate the position of the buttocks of the user U seated on the seating part 10. In this way, a desired positional relationship between the seating part 10 and the pelvis of the user U can be realized.

[0017] The support mechanism 11 is a mechanism that supports the seating section 10 so as to be capable of roll swinging and yaw swinging. The support mechanism 11 includes a yaw swing mechanism 13 and a roll swing mechanism 14. The roll swing mechanism 14 is disposed above the yaw swing mechanism 13. However, instead of this, the roll swing mechanism 14 may be disposed below the yaw swing mechanism 13. The yaw swing mechanism 13 may also be omitted.

[0018] The yaw swing mechanism 13 includes an upper support plate 13a disposed above, a lower support plate 13b disposed below, and a bearing 13c disposed between the upper support plate 13a and the lower support plate 13b. That is, the upper support plate 13a is disposed above the bearing 13c, and the lower support plate 13b is disposed below the bearing 13c. The legs 7 are fixed to the lower support plate 13b so as to protrude downward from the lower support plate 13b. The upper support plate 13a is allowed to swing in yaw relative to the lower support plate 13b by the bearing 13c. In this embodiment, the bearing 13c is a rolling bearing. However, instead of this, the bearing 13c may be a sliding bearing. The upper support plate 13a and the lower support plate 13b are plates having sufficient rigidity so as not to be easily deflected by the load received from the user U, and are made of, for example, wood, metal, or resin.

[0019] The roll swing mechanism 14 includes an upper support plate 15 disposed above and a plurality of balloons 16 disposed below. That is, the upper support plate 15 is disposed above the plurality of balloons 16. The plurality of balloons 16 are disposed below the upper support plate 15. The upper support plate 15 is a plate having sufficient rigidity not to bend easily under the load received from the user U, and is made of, for example, wood, metal, or resin. The upper support plate 15 is provided on the lower surface 10b of the seating portion 10, thereby preventing the seating portion 10 from bending downwardly and convexly when the user U sits on the seating portion 10.

[0020] Each balloon 16 is a specific example of an elastic body that can generate a repulsive force upward when compressed in the vertical direction. Each balloon 16 is a specific example of a bag body in which gas is sealed. That is, each balloon 16 expands and assumes a specific shape by sealing gas at a specific pressure. In this embodiment, each balloon 16 assumes a downwardly convex hemispherical shape in a state in which gas is sealed. Each balloon 16 is typically made of polyvinyl chloride resin.

[0021] The balloons 16 include a right ischium balloon 16R, a left ischium balloon 16L, and a coccyx balloon 16T. The right ischium balloon 16R is disposed under the seat 10 and is a specific example of a right leg elastic body corresponding to the right ischium, which is the ischium on the right leg side of the user U seated on the seat 10. The left ischium balloon 16L is disposed under the seat 10 and is a specific example of a right leg elastic body corresponding to the left ischium, which is the ischium on the left leg side of the user U seated on the seat 10. The coccyx balloon 16T is disposed under the seat 10 and is a specific example of a coccyx elastic body corresponding to the coccyx of the user U seated on the seat 10.

[0022] 4 shows a plan view of the pelvis of the user U when the user U is seated on the seat 10. The right ischial balloon 16R is arranged corresponding to the right ischial bone of the user U when the user U is seated on the seat 10. The left ischial balloon 16L is arranged corresponding to the left ischial bone of the user U when the user U is seated on the seat 10. The coccyx balloon 16T is arranged corresponding to the tailbone of the user U when the user U is seated on the seat 10.

[0023] More specifically, in the plan view shown in FIG. 4, the distance D1 between the center of the right ischial balloon 16R and the center of the left ischial balloon 16L is longer than the distance D2 between the lower end of the right leg side ischium and the lower end of the left leg side ischium. That is, in the plan view shown in FIG. 4, the right ischial balloon 16R is disposed slightly outward (lateral) from the lower end of the right leg side ischium. Similarly, the left ischial balloon 16L is disposed slightly outward from the lower end of the left leg side ischium. According to this arrangement, when the pelvis rolls to the right, the repulsive force of the right ischial balloon 16R effectively pushes back the pelvis so that the pelvis rolls to the left. Similarly, when the pelvis rolls to the left, the repulsive force of the left ischial balloon 16L effectively pushes back the pelvis so that the pelvis rolls to the right. Therefore, the user U can rhythmically roll the pelvis alternately left and right with less load. However, the right ischial balloon 16R may be disposed immediately below the lower end of the ischium on the right leg side, and the left ischial balloon 16L may be disposed immediately below the lower end of the ischium on the left leg side.

[0024] In this way, by providing the right ischial balloon 16R and the left ischial balloon 16L, when the user U sits on the seat 10 and uses the leg-pedaling exercise device 2 to perform leg-pedaling exercise, the pelvis of the user U rolls left and right, generating an upward kinetic chain from the lower limbs to the trunk, and training the trunk at the same time as training the lower limbs. In other words, it will be possible to simultaneously exercise the trunk muscles represented by the rectus abdominis, transverse abdominis, and erector spinae.

[0025] On the other hand, as shown in FIG. 4, the coccyx balloon 16T is disposed immediately below the lower end of the tailbone. That is, the center 16Tc of the coccyx balloon 16T is located immediately below the lower end of the tailbone. However, the center 16Tc of the coccyx balloon 16T may be disposed anterior to the lower end of the tailbone in the plan view shown in FIG. 4, or may be disposed posterior to the lower end of the tailbone. In short, the coccyx balloon 16T may be disposed posterior to the right ischial balloon 16R and the left ischial balloon 16L. According to the above configuration, the coccyx balloon 16T can support the seating part 10 so that the pitch posture of the seating part 10 is stabilized.

[0026] In order to effectively generate an upward kinetic chain from the lower limbs to the trunk, it is important to make the pitch posture of the pelvis slightly tilted forward. Various methods can be considered to correct the pitch posture of the pelvis in this way. That is, for example, first, the internal pressure of the coccyx balloon 16T is made higher than the internal pressure of the right ischial balloon 16R and the left ischial balloon 16L. According to the above configuration, when the user U sits on the seating part 10, the front part of the seating part 10 sinks, whereas the sinking of the rear part of the seating part 10 is suppressed, so that the above-mentioned pitch posture is corrected. Second, as shown in FIG. 2, the seating part 10 is formed so that the seat surface 10a of the seating part 10 rises backward. According to the above configuration, the seat surface 10a itself rises backward, so that the above-mentioned pitch posture is corrected. It is also possible to combine the first method and the second method.

[0027] Returning to FIG. 3, the cover 12 covers and conceals the seat 10 and the support mechanism 11, and is typically made of fabric.

[0028] The first embodiment has been described above, and has the following features.

[0029] The exercise system 100 shown in FIG. 1 includes a foot-pedaling exercise device 2 (lower limb exercise device) and a chair 1. The foot-pedaling exercise device 2 realizes lower limb exercise involving repeated extension and flexion of at least the knee joint and hip joint. The chair 1 is for a user U to sit on when the user U uses the foot-pedaling exercise device 2 to perform lower limb exercise. As shown in FIG. 3, the chair 1 includes a seat 10 on which the user U sits, and a support mechanism 11 that supports the seat 10 so that it can roll and swing. The seat 10 rolls and swings during lower limb exercise, generating a kinetic chain between the lower limbs and the trunk. With the above configuration, a kinetic chain between the lower limbs and the trunk can be realized when performing lower limb exercise in a seated position.

[0030] 3 and 4, the support mechanism 11 includes a right ischial balloon 16R (right leg elastic body) disposed under the seating portion 10 and corresponding to the right ischial bone, which is the ischial bone on the right leg side of the user U seated on the seating portion 10, and a left ischial balloon 16L (left leg elastic body) disposed under the seating portion 10 and corresponding to the left ischial bone, which is the ischial bone on the left leg side of the user U seated on the seating portion 10. With the above-mentioned configuration, the support mechanism 11 can be realized with a simple configuration.

[0031] Moreover, the right ischial balloon 16R and the left ischial balloon 16L are bags filled with gas. According to the above configuration, an inexpensive exercise system 100 can be realized.

[0032] 3, the right ischial balloon 16R and the left ischial balloon 16L are each semispherical and convex downward when gas is sealed therein. According to the above configuration, effective rolling motion can be achieved.

[0033] Moreover, the support mechanism 11 further corrects the pitch posture of the pelvis of the user U. According to the above configuration, an upward kinetic chain from the lower limbs to the trunk can be effectively generated.

[0034] 3, the support mechanism 11 is disposed under the seating portion 10 and further includes a coccyx balloon 16T as a tailbone elastic body corresponding to the tailbone of the user U seated on the seating portion 10. The coccyx balloon 16T corrects the pitch posture of the pelvis of the user U. With the above-described configuration, the support mechanism 11 can be realized with a simple configuration.

[0035] Moreover, the coccyx balloon 16T serving as the coccyx elastic body is a bag body with gas sealed in. With the above-mentioned configuration, the coccyx elastic body can be realized at low cost.

[0036] Second embodiment Next, a second embodiment will be described with reference to Figures 5 and 6. Below, the differences between this embodiment and the first embodiment will be mainly described, and overlapping descriptions will be omitted.

[0037] In the first embodiment, the chair 1 itself includes the seating portion 10 and the support mechanism 11, as shown in FIG.

[0038] In contrast, in this embodiment, an exercise aid 21 that can be applied to an existing chair 20 includes a seat 10 and a support mechanism 11, as shown in FIGS.

[0039] That is, the exercise aid 21 is used by being mounted on the seat 20a of the chair 20. More specifically, as shown in Fig. 6, the exercise aid 21 is mounted on the seat 20a of the chair 20 so that the lower support plate 13b of the yaw swing mechanism 13 of the support mechanism 11 of the exercise aid 21 faces the seat 20a of the chair 20 in the up-down direction.

[0040] In summary, the above second embodiment has the following features.

[0041] As shown in Fig. 5, the exercise system 200 includes a leg-pedaling exercise machine (not shown) and an exercise aid 21 that can be mounted on the seat 20a of a chair 20 and on which a user U sits when the user U uses the leg-pedaling exercise machine 2 to exercise his / her lower limbs. The exercise aid 21 includes a seat 10 on which the user U sits and a support mechanism 11 that supports the seat 10 so that the seat 10 can roll and swing. The seat 10 rolls and swings during the lower limbs exercise, generating a kinetic chain between the lower limbs and the trunk. With the above configuration, a kinetic chain between the lower limbs and the trunk can be realized when performing lower limbs exercise in a seated position.

[0042] Although the first and second embodiments of the present disclosure have been described above, each of the above embodiments can be modified as follows.

[0043] That is, as shown in FIG. 3 and FIG. 6, in each of the above-mentioned embodiments, each balloon 16 has a hemispherical shape that is convex downward when gas is enclosed. However, instead of this, each balloon 16 may be a bellows-type balloon having a bellows (bellows) on the outer periphery so as to be freely stretchable in the longitudinal direction, as shown in FIG. 7. In this case, each balloon 16 may be arranged so that its longitudinal direction is vertical. Also, instead of each balloon 16, a coil spring may be adopted as shown in FIG. 8. In this case, the coil spring may be arranged so that its longitudinal direction is vertical. Note that the coil spring arranged in place of the right ischial balloon 16R may be arranged obliquely so as to be higher toward the medial side when viewed from the front of the chair 1 or the exercise aid 21. In this case, the repulsive force of the coil spring generated when the pelvis is rolled acts to face slightly inward, so that the rolled pelvis can be effectively returned to a neutral state. The same applies to the coil spring arranged in place of the left ischial balloon 16L. Moreover, instead of each balloon 16, other elastic bodies such as rubber may be used.

[0044] Also, the right ischial balloon 16R, the left ischial balloon 16L, and the coccyx balloon 16T may be integrally constructed instead of being constructed as separate bodies. However, in this case, it is preferable that the internal spaces of the right ischial balloon 16R, the left ischial balloon 16L, and the coccyx balloon 16T are isolated from each other. If they are not isolated, it is difficult for the right ischial balloon 16R and the left ischial balloon 16L to generate a repulsive force when the pelvis rolls.

[0045] The support mechanism 11 may also include a plurality of coccyx balloons 16T. In this case, the plurality of coccyx balloons 16T are all disposed rearward of the right ischial balloon 16R and the left ischial balloon 16L.

[0046] In each embodiment, the yaw rocking mechanism 13 can be omitted. In particular, in the second embodiment, when the chair 20 itself supports the seat surface 20a so as to be yaw rotatable, the yaw rocking mechanism 13 of the exercise assistance device 21 may be omitted. [Explanation of symbols]

[0047] 1 Chair 2. Pedal exercise equipment 3. Device body 4. Crank 4a Crankshaft 5 Pedals 6 Chair body 7 legs 10 Seating area 10a Seat 10b Bottom side 11 Support mechanism 12 Cover 13 Yaw swing mechanism 13a Upper support plate 13b Lower support plate 13c Bearings 14 Roll swing mechanism 15 Upper support plate 16 Balloon 16R Right ischial balloon 16L Left Sciatic Balloon 16T Coccyx Balloon 16Tc center 20 Chairs 20a Seat 21 Exercise aids 100 Exercise System 200 Exercise System D1 Distance D2 distance U User F. Both legs RL right leg LL left leg

Claims

1. A lower limb exercise device that realizes lower limb movements repeatedly involving at least the extension and flexion of the knee joint and hip joint, A chair on which a user sits when performing the lower limb movements using the lower limb exercise device, Including, A movement system, The chair, A seating portion on which the user sits, A support mechanism including a roll rocking mechanism that supports the seating portion so as to be roll-rockable, Equipped with, During the lower limb movement, the seating portion rolls and rocks, generating a movement chain between the lower limbs and the trunk, The roll rocking mechanism includes an upper support plate disposed above and a plurality of elastic bodies disposed below, The plurality of elastic bodies are disposed under the seating portion, and include a right leg side elastic body that supports the right leg side ischium, which is the ischium on the right leg side of the user sitting on the seating portion, and a left leg side elastic body that supports the left leg side ischium, which is the ischium on the left leg side of the user sitting on the seating portion, and are disposed under the seating portion, The right leg side elastic body is disposed outside the right leg side ischium, The left leg side elastic body is disposed outside the left leg side ischium, Movement system.

2. A lower limb exercise device that realizes lower limb movements repeatedly involving at least the extension and flexion of the knee joint and hip joint, An exercise assist device that can be mounted on the seat surface of a chair and on which a user sits when performing the lower limb movements using the lower limb exercise device, Including, A movement system, The exercise assist device, A seating portion on which the user sits, A support mechanism including a roll rocking mechanism that supports the seating portion so as to be roll-rockable, Equipped with, During the lower limb movement, the seating portion rolls and rocks, generating a movement chain between the lower limbs and the trunk, The roll rocking mechanism includes an upper support plate disposed above and a plurality of elastic bodies disposed below, The plurality of elastic bodies are disposed under the seating portion, and include a right leg side elastic body that supports the right leg side ischium, which is the ischium on the right leg side of the user sitting on the seating portion, and a left leg side elastic body that supports the left leg side ischium, which is the ischium on the left leg side of the user sitting on the seating portion, and are disposed under the seating portion, The right leg side elastic body is disposed outside the right leg side ischium, The left leg side elastic body is disposed outside the left leg side ischium, Movement system.

3. The movement system according to Claim 1 or 2, The right leg side elastic body and the left leg side elastic body are bag bodies filled with gas, Movement system.

4. The exercise system according to claim 3, wherein the bag body is hemispherical and convex downward with the gas enclosed therein, exercise system.

5. The exercise system according to claim 1 or 2, wherein the right-foot-side elastic body and the left-foot-side elastic body are coil springs, exercise system.

6. The exercise system according to claim 1 or 2, wherein the support mechanism further corrects the pitch posture of the pelvis of the user, exercise system.

7. The exercise system according to claim 6, wherein the support mechanism is disposed under the seating portion and further includes a coccyx elastic body that supports the coccyx of the user seated on the seating portion, and the pitch posture of the pelvis of the user is corrected by the coccyx elastic body, exercise system.

8. The exercise system according to claim 7, wherein the coccyx elastic body is a bag body filled with gas or a coil spring, exercise system.

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