JPH0225620B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ankle plantar dorsiflexion exerciser that enables plantarflexion and dorsiflexion movements of the ankle joint while applying stimulation to the arch.

[Conventional technology]

Various types of exercise equipment are known for use in functional recovery training for physically disabled people, depending on the area of disability. A joint plantar dorsiflexion exerciser 1 is known. This ankle plantar dorsiflexion exerciser 1 has coil springs 4 and 5 arranged before and after a pedal 3 that swings around a support shaft 2, and connects the foot fixed to the pedal 3 with a belt 6 between the toe and the foot. I try to do plantar flexion and dorsiflexion movements by alternately putting pressure on my heels.

[Problems to be Solved by the Invention] The conventional ankle plantar dorsiflexion exerciser 1 described above has a pedal 3
Since the front and rear of the pedal 3 are balanced and supported by the elastic force of coil springs 4 and 5, which are energy storage means, the pedal 3
When the pedal 3 is horizontal, the load is small, but as the inclination angle of the pedal 3 increases, the load resistance increases. In general, the contractile force of the muscles that move the ankle joint is strong at the initial joint angle of the movement, and weakens as the plantarflexion or dorsiflexion angle increases, whereas in the conventional ankle plantardorsiflexion exercise described above, In Device 1, the slope of increase and decrease in muscle strength and exercise load is exactly opposite, so when trained by people with particularly weak leg strength, such as physically disabled people, there were problems such as the exercise effect not increasing. .

[Means for solving problems]

This invention solves the above-mentioned problems, and includes a pedal that is large enough to be stood on with one's feet and swings around a spindle, and a pedal that applies a non-storage rotational load to the spindle. a load device having a pair of oil chambers partitioned by a vane connected to the support shaft, the two oil chambers being connected by a hydraulic conduit having a flow control valve in the middle; The gist is that the pedal includes a protrusion that is provided on the upper surface of the pedal in the direction of the spindle and that has a chevron-shaped cross section that comes into contact with the arch of the sole of the foot.

[Effect]

This invention performs plantar dorsiflexion of the ankle joint against a non-storage type rotational load, and also brings the arch of the foot into contact with a chevron-shaped protrusion provided in the axial direction of the pedal. Then, plantar flexion and dorsiflexion are performed alternately, and plantar dorsiflexion training of the ankle joint is performed while stimulating the arch of the foot.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. 1 and 2 are a perspective view and a hydraulic circuit diagram, respectively, showing an embodiment of the ankle plantar dorsiflexion exerciser of the present invention.

In FIG. 1, the ankle plantar dorsiflexor flexor 11 has a frame 12 having a roughly concave plane with casters 12a at the four corners, and a pedal 13 of a size that allows a person to stand on both feet in a swingable manner. It is pivoted on.
Both ends of the support shaft 13a of the pedal 13 are supported by bearings 14, and a hydraulic pump 15, which is a non-storage type load device, is attached to one end thereof.
The hydraulic pump 15 has a control box 16.
A control box 16 is attached to a handrail 12b planted in the frame 12.

A protrusion 13b having a chevron-shaped cross-section is formed in the center of the upper surface of the pedal 13 along the direction of the support shaft 13a, and when the foot is placed on the pedal 13, the arch of the sole of the foot touches the protrusion 13b. comes into contact with. 17,1
8 is a stopper for regulating the rocking limit position of the pedal 13, and its height can be freely changed.

By the way, the hydraulic pump 15 as the load device described above has a pair of oil chambers 15b and 15c partitioned by a vane 15a connected to a support shaft 13a, and both oil chambers 15b and 15c are connected to hydraulic pipes. Road 19
connected by. Two sets of flow rate control valves 20 and oil pressure gauges 21 are provided in the middle of the hydraulic line 19, and these are centrally arranged in the control box 16. The flow control valve 20 has a check valve 20a and a variable throttle valve 20b connected in parallel, and the variable throttle valve 20b provides a required resistance to the flow in the direction in which the check valve 20a closes.

When performing ankle plantar dorsiflexion training, first set the valve opening of the variable throttle valve 20b of the flow control valve 20 to an appropriate value, and adjust the heights of the stoppers 17 and 18 to allow the pedal 13 to swing. Limit the scope. Next, the user places his/her hands on the handrail 12b, places both feet on the pedal 13, and uses the ankle joints to perform plantar flexion and dorsiflexion.

When you put force into your toes and plantar flex, the pedal 13 swings, and at the same time the vane 1 in the hydraulic pump 15
5a rotates. The vane 15a rotates while removing the oil in the oil chamber 15b, and the oil sent out from the oil chamber 15b is given a certain resistance by the flow control valve 20. Since this resistance is approximately constant during the period of rocking of the pedal 13, the exercise load is constant regardless of the plantar flexion angle. Further, no matter what angle the plantar flexion is stopped, the return phenomenon unlike the energy storage type coil springs 4 and 5 is not observed, and it is possible to perform exercise training similar to the behavior pattern required in daily life.

Also, when dorsiflexing with force on the heel, as with plantarflexion, the load and movement speed are kept almost constant during the exercise period regardless of the dorsiflexion angle, and isokinetic training (isokinetic training) is performed.
Exercise) becomes possible. Furthermore, in plantar flexion and dorsiflexion movements, the position of the arch of the foot that touches the protrusion 13b is naturally shifted, and it is possible to take a posture in which it is easy to put force into the toes and heel, so the foot can be placed on the pedal 13. Compared to the case where it is fixed to a fixed position, an extremely high exercise effect can be achieved.

Also, when transitioning from plantar flexion to dorsiflexion or vice versa, the arch of the foot can be moved to the protrusion 13.
By sliding the top surface of b and moving it back and forth, the transition can be made easily. Additionally, since the arch of the foot is stimulated evenly during the entire exercise period, it can have the same or even greater health-promoting effect than stepping on green bamboo.

Furthermore, the exercise load is set by the flow control valve 2.
Since it can be arbitrarily set according to the aperture opening degree of 0, it is possible to train according to the muscle strength of the trainee.

In this way, the ankle plantar dorsiflexor flexor 11 is configured to apply an exercise load using the hydraulic pump 15, which is a non-storage type load device, so it is suitable for people with disabilities who have significant problems with specific joint angles. , it is possible to perform isokinetic training with high training effects.

Further, the ankle plantar dorsiflexion exerciser 11 includes a pedal 13
Since a protrusion 13b with a chevron-shaped cross section that contacts the arch of the foot is provided in the direction of the support shaft 13a, which is the center of oscillation, the movement of plantar flexion with force on the tip of the toe and the movement of dorsiflexion with force on the heel are provided. Therefore, the position of the arch that hits the protrusion 13b can be smoothly shifted, and the transition motion between alternating movements can be easily performed using the protrusion 13b, and plantar flexion and dorsiflexion can be easily performed, which is suitable for the behavioral style of daily life. It can be implemented in a form similar to
Moreover, since the arch of the foot can be stimulated evenly throughout the entire exercise process, it can provide health-promoting effects equal to or greater than that of stepping on green bamboo.

〔Effect of the invention〕

As explained above, according to the present invention, since the configuration is such that an exercise load is applied using a non-storage type loading device, uniform velocity training is effective for training people with severe disabilities at specific joint angles. In addition, since a protrusion with a chevron-shaped cross section that touches the arch of the foot is provided in the direction of the spindle, which is the center of the pedal's swing, it is possible to plantarflex the toes while applying force to the heel. By dorsiflexing with force, the position of the arch that hits the protrusion can be smoothly shifted,
The transition motion between alternating motions can be easily performed using the protrusions, and plantar flexion and dorsiflexion can be performed without difficulty, in a form that is close to the behavior pattern of daily life, and moreover, it can be performed evenly throughout the entire process of exercise. Since it can stimulate the arch of the foot, it has excellent health-promoting effects that are equal to or greater than those of stepping on green bamboo.

[Brief explanation of drawings]

1 and 2 are a perspective view and a hydraulic circuit diagram respectively showing an embodiment of the ankle plantar dorsiflexion exerciser of the present invention, and FIG. 3 is a side view showing an example of the conventional ankle plantar dorsiflexion exerciser. It is a diagram. 11... Ankle joint plantar dorsiflexion exerciser, 13... Pedal, 13a... Support shaft, 13b... Projection, 15...
Hydraulic pump.

Claims (1)

[Claims] 1. A pedal that is large enough to stand on with one's feet and swings around a support shaft, and a vane connected to the support shaft to apply a non-storage rotational load to the support shaft. A load device has a pair of partitioned oil chambers, and these two oil chambers are connected by a hydraulic pipe line with a flow control valve in the middle, and a load device is provided on the upper surface of the pedal in the direction of the support shaft, and An ankle plantar dorsiflexion exerciser characterized by comprising a protrusion having a chevron-shaped cross section that abuts the back arch of the foot.