A support assembly includes a support rotatable along a first surface with respect to a support rail, a repetition lever rotatable on the support, and a jack rotatable on the support and disposed to at least partially overlaps the repetition lever. The repetition lever includes a first contact portion which makes contact with a regulating portion which regulates rotation, the jack includes a second contact portion which makes contact with the regulating portion which regulates rotation, and the repetition lever and the jack are provided so that the first contact portion and the second contact portion overlap each other.

A support assembly in one embodiment of the present invention includes a support rotatable along a first surface with respect to a frame; a repetition lever rotatable with respect to the support; and an extension portion coupled to the repetition lever, the extension portion being slidable contact with a first guide portion, the first guide portion moving along the first surface.

A support assembly includes a support rotatable with respect to a frame, a repetition lever rotatable with respect to the support, and a first extension portion disposed to the repetition lever on a jack side with respect to the center of rotation of the repetition lever, the first extension portion being in contact with a stopper from below the stopper.

A support assembly according to one embodiment of the present invention is provided, the support assembly including a jack rotatably supported by a support; a repetition lever rotatably supported with respect to the support; a protrusion disposed at an intersecting portion of the jack and the repetition lever; and a protrusion receiving portion for receiving the protrusion; wherein the protrusion receiving portion defines a movable range of the protrusion and limits a rotation range of the jack.

A support assembly according to one embodiment of the present invention includes a support rotatably disposed with respect to a frame, a repetition lever rotatably connected to the support, an spring element supported by a support portion fixed to the support, the spring element which provides a rotational force to the repetition lever, and a contact portion between the repetition lever and the spring element, wherein a rotating portion of the repetition lever is provided with respect to the support portion on a side opposite to the contact portion between the repetition lever and the spring element.

A support assembly according to one embodiment of the present invention includes a support rotatably disposed with respect to a frame, a repetition lever rotatably connected to the support, an spring element supported by a support portion fixed to the support, the spring element which provides a rotational force to the repetition lever, and a contact portion between the repetition lever and the spring element, wherein a rotating portion of the repetition lever is provided with respect to the support portion on a side opposite to the contact portion between the repetition lever and the spring element.

A support assembly includes a support rotatable with respect to a frame, a repetition lever rotatable with respect to the support, and a first extension portion disposed to the repetition lever on a jack side with respect to the center of rotation of the repetition lever, the first extension portion being in contact with a stopper from below the stopper.

A support assembly includes a support rotatable along a first surface with respect to a support rail, a repetition lever rotatable on the support, and a jack rotatable on the support and disposed to at least partially overlaps the repetition lever. The repetition lever includes a first contact portion which makes contact with a regulating portion which regulates rotation, the jack includes a second contact portion which makes contact with the regulating portion which regulates rotation, and the repetition lever and the jack are provided so that the first contact portion and the second contact portion overlap each other.

A support assembly in one embodiment of the present invention includes a support rotatable along a first surface with respect to a frame; a repetition lever rotatable with respect to the support; and an extension portion coupled to the repetition lever, the extension portion being slidable contact with a first guide portion, the first guide portion moving along the first surface.

A support assembly according to one embodiment of the present invention is provided, the support assembly including a jack rotatably supported by a support; a repetition lever rotatably supported with respect to the support; a protrusion disposed at an intersecting portion of the jack and the repetition lever; and a protrusion receiving portion for receiving the protrusion; wherein the protrusion receiving portion defines a movable range of the protrusion and limits a rotation range of the jack.