Patent ID: 11931309
Assignee: SUNCALL CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. The actuator unit according to claim 1, wherein:
the upper connecting body includes an upper rotational shaft provided on the upper frame to extend inward in a user width direction, an upper fastening member supported by the upper rotational shaft to be rotatable around an axis of the upper rotational shaft, and an upper receiving member supported by the upper frame in a position spaced apart in a user front-back direction from the upper rotational shaft at a distance that enables the thigh frame to be interposed between the upper receiving member and the upper rotational shaft;
the upper fastening member has a bearing part supported by the upper rotational shaft and a cam part extending radially outward from the bearing part;
the cam part is configured such that a radial distance between an outer circumferential surface of the cam part and the axis of the upper rotational shaft is increased toward a first side around the axis of the upper rotational shaft; and
in a state where the upper fastening member is positioned in a released position around the upper rotational shaft, relatively moving the upper frame and the thigh frame toward each other with respect to the user width direction enables the thigh frame to be positioned in a space between the upper fastening member and the upper receiving member, and in a state where the thigh frame is positioned in the space, relatively moving the upper frame and the thigh frame away from each other with respect to the user width direction enables the thigh frame to be retreated from the space, while, in the state where the thigh frame is positioned in the space, rotating the upper fastening member from the released position around the upper rotational shaft to a second side opposite to the first side around the axis causes the cam part to hold the thigh frame in cooperation with the upper receiving member with respect to the user front-back direction, and thereby the upper frame is connected to the thigh frame.