JP2010125299A - Lower limb joint bending and stretching exercise device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein although the conventional motor-driven cycle exercise device causes a user to bend and stretch the knee joint and hip joint, bending and stretching exercises for the ankle are not done enough, because pedals on which his feet are placed are freely rotated to disable his ankles from bending and stretching. <P>SOLUTION: The rotation of a shaft 8 of the pedal provided on a crank arm 4 is controlled so that when the crank arm rotates, it may rotate with the surface of the pedal 7 on which his foot is placed kept in a fixed direction. The shaft of the pedal is rotatably mounted on the crank arm fitted to an output shaft, and a rotary gear 6 is mounted on the shaft of the pedal. Further on the driving device 2 side, a fixed gear 5 having the same specifications (the same number of teeth) as the gear fixed to the pedal shaft is supported and fixed coaxially with a driving shaft 3, and the fixed gear and the rotary gear are engaged by a timing belt 9 or a chain to control the rotation of the pedal. Thus, in his feet placed on the pedals, his ankles can be bent and stretched when the crank rotates. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an auxiliary exercise device for improving foot "swelling" due to aging or long-term bed life after surgery, contracture of lower limb joints, prevention and recovery of muscle weakness.

  As the patient ages or walks less in the long-term bed life after surgery, symptoms such as “swollen feet”, joint contracture, and muscle weakness occur. In order to prevent and improve it, exercise that does not put a heavy burden on the body is necessary. However, it is often difficult for elderly people and patients after surgery to exercise on their own. In such a case, a passive exercise apparatus capable of obtaining the same effect as walking exercise is desired.

  For that purpose, it is effective to assist the flexion and extension of each joint of the lower limbs with other power such as an electric motor, especially the ankle flexion and extension promotes blood circulation and is effective in preventing and improving foot swelling and muscle weakness It is said to be appropriate.

  In order to solve this, the lower limb flexion / extension device using an electric motor filed with the application number (Patent 2006-100133) is a device that flexibly stretches the lower limb joint and expects an effect. In addition, the conventional bicycle rowing exercise apparatus moves the hip joint and the knee joint, but the pedal on which the foot is placed rotates freely, so that the ankle joint cannot bend and stretch sufficiently.

As described above, conventional ankle flexion / extension devices and bicycle rowing exercise devices are not fully satisfactory as exercise equipment for lower limb joints.
In the present invention, it is possible to sufficiently move each joint of the lower limbs, smooth movement of each joint of the lower limbs, improvement and prevention of “swelling” by preventing joint contracture and improving blood circulation, and reducing muscle strength. The purpose is to improve prevention and improvement.

  In order to solve the above-mentioned problems, by controlling the rotation of the pedals on the left and right feet of a bicycle rowing exercise apparatus operated by an electric motor or the like, it is possible to sufficiently flex and extend the ankle in addition to the hip joint and the knee joint. it can.

  In the present invention, a crank arm having a pedal shaft rotatably attached is attached to the left and right sides of a drive device shaft composed of an electric motor and an axis-reduced reduction gear having left and right output shafts. A fixed gear is non-rotatably supported and fixed at the same center, a rotating gear of the same specification (the same number of teeth) as the gear is attached to the shaft of a rotatable pedal, and the two gears are chained or timed. A structure that engages with a belt.

  In the lower limb articulation and extension exercise device having such a structure, the crank arm rotates when the shaft of the drive device rotates, and the pedal rotatably mounted on the crank arm includes a rotary gear attached to the pedal shaft and a drive shaft side. Rotation is controlled by a fixed gear supported and fixed by a chain and a chain or timing belt connecting them, and the surface on which the foot of the pedal is placed is kept in a certain direction to revolve, and the ankle of the foot on the pedal is bent and stretched I can do it.

The lower limb joint flexion / extension exercise apparatus of the present invention configured as described above is configured such that when the left and right feet are placed on the left and right pedals of the apparatus and the drive shaft is rotated, the left and right legs perform a bicycle rowing exercise, and are moved back and forth and up and down. In addition to flexing and stretching movements, hip joints and knee joints, the ankles also flex and stretch, helping to relieve joints and prevent contractures, promote blood circulation, improve swelling, lower muscles and prevent

Embodiments of the present invention will be described below with reference to FIGS.
A drive device 2 comprising an electric motor and an axis orthogonal reduction device is installed on the gantry 1 in FIG. 1, and a crank arm 4 in which a shaft 8 of a pedal 7 is rotatably provided on the left and right output shafts 3 of the drive device 2. The fixed gear 5 is supported and fixed on the side surface of the driving device so that the driving shaft and the shaft center are the same between the driving device 2 and the crank arm 4, and is fixed to one end of the pedal shaft 8. A rotation gear 6 having the number of teeth is mounted, and the fixed gear 5 and the rotation gear 6 are connected by a timing belt 9.

    When the electric motor rotates, the left and right cranks of the driving device of the present invention configured as described above rotate the left and right cranks, and sit on a chair or saddle and ride a bicycle on the pedal. Rotating while maintaining the foot on the pedal in a certain direction, as shown in Fig. 4, bend and stretch the ankle, knee joint and hip joint, relax the joint and prevent contracture, and bend and stretch the ankle By promoting the blood flow, effects such as prevention of “swelling” and prevention of muscle strength reduction can be expected.

Front view of a lower limb joint flexion and extension exercise device showing an embodiment of the present invention Side view of a lower limb joint flexion and extension exercise device showing an embodiment of the present invention Enlarged view of the crank arm and pedal part of the present invention Explanatory drawing which shows the movement of the leg joint by this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stand 2 Drive device 3 Drive shaft 4 Crank arm 4a Crank arm sectional view 5 Fixed gear 6 Rotating gear 7 Pedal 8 Pedal shaft 9 Timing belt 10 Cover

Claims (1)

  In a passive exercise device that performs bicycle rowing exercises in which a crank arm with a pedal is attached to the left and right of the output shaft of a drive device composed of an electric motor and an orthogonal reduction gear, the axis of the output shaft is the same. Then, the fixed gear (4) is supported and fixed to the left and right of the drive device so as not to rotate, and the pedal shaft (8) of the pedal (7) is freely rotatable on the crank arm (4) mounted on the left and right output shafts (3). The rotating gear (6) having the same specifications as the fixed gear (5) is mounted on the pedal shaft, and the fixed gear (5) and the rotating gear (6) are engaged with each other by a timing belt or a chain (9). Lower limb joint flexion / extension exercise apparatus characterized by the above.

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