Apparatus for assisting muscular strength

An apparatus for assisting muscular strength, the apparatus comprising:

• an upper frame configured to be fixed to a user's upper body;
• a lower frame disposed below the upper frame and configured to be fixed to the user's lower body and rotatable relative to the upper frame;
• and
• a force generating unit coupled to one side of the upper frame and configured to provide the lower frame with a force applied in a second rotational direction opposite to a first rotational direction when the lower frame rotates in the first rotational direction relative to the upper frame,
• wherein the force generating unit comprises:
• a frame member configured to define a body of the force generating unit;
• a first spring accommodated in the frame member;
• a pressing part disposed at one side of the first spring and configured to press the first spring;
• and
• a link part disposed at the other side of the first spring and configured to press the first spring and move in conjunction with a relative rotational motion between the upper frame and the lower frame;
• wherein the pressing part comprises a block member coupled to be rotatable about a first rotary shaft fixed to the frame member;
• wherein the pressing part further comprises a support member disposed at one side of the block member, provided separately from the block member, and configured to come into contact with the first spring;
• wherein the force generating unit further comprises a second spring disposed between the pressing part and the link part and having one end facing the pressing part and the other end facing the link part;
• wherein the link part comprises:
• a first link having one side rotatably coupled to a second rotary shaft fixed to the frame member and the other side connected to the lower frame;
• and
• a second link having one side rotatably coupled to the first link through a third rotary shaft and the other side provided to be movable in an upward/downward direction, and
• wherein the frame member has a groove region extending in the upward/downward direction, and the other side of the second link is disposed in the frame member, inserted into the groove region, and rotatably coupled to a fourth rotary shaft provided to be movable in a the upward/downward direction.