Patent attributes
Provided is an operation device including: an operation portion inserted into an insertion hole portion of a glass portion; a frame portion equipped with an inner hole portion into which the operation portion is inserted; a rotation portion rotatably installed on the frame portion; a first locking part connected by the rotation portion and a link member, and moved together with the link member so as to be attached to and detached from one side of the operation portion; a second locking part installed in a position opposite to the first locking part with the operation portion interposed therebetween, and moved together with the first locking part so as to be attached to and detached from the other side of the operation portion; and a rotating connecting portion rotatably installed to the frame portion and to which the first locking part and the second locking part are rotatably connected.
