Rehabilitation exercise device for upper and lower limbs

A rehabilitation exercise device for upper and lower limbs, the rehabilitation exercise device comprising:

• a first support configured to support a user's hand or foot;
• a second support configured to support the user's forearm or calf;
• a pair of first hinges rotatably connecting the first support and the second support to each other;
• a third support configured to support the user's upper arm or thigh;
• a pair of second hinges rotatably connecting the second support and the third support to each other;
• and
• a drive module selectively mounted on any one of the pair of first hinges and the pair of second hinges, and configured to pivot the first support or the second support,
• wherein each of the first hinges or each of the second hinges comprises:
• a first rotary part connected to the first support or the second support, and configured to be rotated in conjunction with driving of the drive module;
• and
• a second rotary part connected to the second support or the third support, and configured to be rotated relative to the first rotary part, and
• a rotation restraining part is further provided, the rotation restraining part being installed on the first hinge or the second hinge, and being configured to restrain relative rotation between the first rotary part and the second rotary part
• wherein the rotation restraining part comprises:
• a rotary gear plate shafted to any one of the first rotary part and the second rotary part to be rotated in conjunction with any one of the first rotary part and the second rotary part, and having gear teeth circumferentially formed along an end thereof, and
• a gear restraining member installed on a remaining one of the first rotary part and the second rotary part, and configured to restrain rotation of any one of the first
• rotary part and the second rotary part by being inserted into a space between the gear teeth of the rotary gear plate.