Patent ID: 11920730
Assignee: CANON KABUSHIKI KAISHA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A head mounted display comprising:
a display unit configured to display an image to a user; and
a mount unit configured to mount the display unit on a head of the user,
wherein the mount unit includes a first housing having a plurality of racks, a second housing having a pinion to be engaged with each of the plurality of racks,
a torque limiter having a lower upper limit of a holding force generated in a second direction than a upper limit of a holding force generated in a first direction, and a pinion shaft inserted into the torque limiter and connecting to the pinion so as to rotate integrally with the pinion, and
wherein the torque limiter generates the holding force against the pinion shaft and is arranged such that
when a force below the upper limit of the holding force is applied to the torque limiter, the pinion and the pinion shaft do not rotate and a circumference of the mount unit does not change,
when a force exceeding the upper limit of the holding force is applied to the torque limiter, the pinion and the pinion shaft rotate and the circumference of the mount unit changes, and
the first direction corresponds to a circumference enlargement direction and the second direction corresponds to a circumferential reduction direction.