Patent ID: 9506503
Filing Date: 2016-11-29
CPC Classification: F16D

Claim Text:
1. A driving device including a drive source, and an input-side joint member to be driven to rotate by the drive source, the driving device configured to drive a driven body to rotate by connecting the input-side joint member to an output-side joint member fixed to the driven body, the driving device comprising: a shaft having a screw portion formed on an outer peripheral surface thereof; a support member configured to rotatably support the shaft; a restraining member configured to restrain the shaft so as not to be movable in an axial direction thereof; and a connection portion formed in one end portion of the shaft, including a hole portion extending from an end face of the one end portion at one end of the shaft toward the other end of the shaft in the axial direction, and having the output-side joint member detachably connected thereto, wherein the output-side joint member includes a protrusion configured to be inserted in and fit in the hole portion so as to connect the output-side joint member to the shaft in an integrally-rotatable manner, the input-side joint member is engaged by thread with the screw portion of the shaft so as to be rotatably supported, and is configured to, by being driven to rotate by the drive source, be able to move between a connection position where the input-side joint member is connected to the output-side joint member and a withdrawal position where the connection is cut off, and the driving device further comprises a compression spring configured to, when the input-side joint member is moved from the withdrawal position to the connection position by the drive source, compressively deform in the axial direction between the input-side joint member and the output-side joint member.