Rehabilitation exercise device for upper and lower limbs

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

• a base plate including a plurality of restraining recesses;
• a mounting plate on which a rehabilitation exercise unit is mounted, wherein the rehabilitation exercise unit comprises a first support configured to support a user's hand or foot, a second support configured to support a user's forearm or calf, and a third support configured to support a user's upper arm or thigh;
• a link member having opposite sides that are rotatably coupled to the base plate and the mounting plate, respectively, and configured to adjust an angle between the base plate and the mounting plate by being rotated when a first side of the mounting plate is moved horizontally along a plate surface of the base plate;
• a pair of extension brackets rotatably coupled to the first side of the mounting plate and extended toward the third support;
• a connection rod connecting the pair of the extension brackets to each other;
• a plurality of catching protrusions formed on the base plate with a predetermined interval along the longitudinal direction of the pair of extension brackets and configured to selectively catch the connection rod in correspondence with an inclination angle between the base plate and the mounting plate;
• and
• a fixing unit fixing the connection rod in one of the plurality of restraining recesses to maintain the connection rod caught by a respective one of the catching protrusions.