US 11,698,573 B2
Adapter device, mount apparatus, and accessory
Masayasu Shigematsu, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 24, 2021, as Appl. No. 17/184,362.
Application 17/184,362 is a continuation of application No. PCT/JP2018/031995, filed on Aug. 29, 2018.
Prior Publication US 2021/0181607 A1, Jun. 17, 2021
Int. Cl. G03B 17/56 (2021.01); G03B 17/14 (2021.01)
CPC G03B 17/56 (2013.01) [G03B 17/14 (2013.01); G03B 17/565 (2013.01); G03B 2206/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A mount apparatus that is attachable to and detachable from an accessory having a first mount provided with a plurality of claws, the mount apparatus comprising:
a second mount fastened to the mount apparatus by a plurality of screws and provided with a plurality of mount claws configured to be engaged with the plurality of claws provided to the first mount; and
a plurality of biasing members configured to bias the plurality of claws provided to the first mount in a center axis direction of the second mount,
wherein the plurality of mount claws provided to the second mount is provided following a circumferential direction of the second mount and includes a first mount claw, a second mount claw, and a third mount claw,
wherein the first mount claw has an angle range and the second and third mount claws each have an angle range in the circumferential direction of the second mount that is smaller than the angle range of the first mount claw,
wherein the first, second, and third mount claws respectively have a first, second, and third biasing member arrangement portions on which each of the plurality of biasing members is arranged, and
wherein, in a case where a line extending from a center of the second mount in a gravitational direction and a direction opposite to the gravitational direction when viewing the mount apparatus in a normal position from the center axis direction of the second mount is taken as a first mount center line, and where a line orthogonal to the first mount center line is taken as a second mount center line, the following is viewed when viewing the second mount in the center axis direction of the second mount:
(i) the first mount claw overlaps the first mount center line, and at least one of the second mount claw and the third mount claw overlap the second mount center line, in a radial direction of the second mount,
(ii) the first biasing member arrangement portion overlaps the first mount center line in the radial direction of the second mount, and
(iii) the second biasing member arrangement portion overlaps the second mount center line in the radial direction of the second mount.