Patent ID: 11898600
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B  Y | IPC F

Claim 0:
1. A tube for a power transmission shaft, made of fiber-reinforced plastic and rotated to transmit power, comprising:
a main body in a shape of cylinder about an axis;
a connection portion in a cylindrical shape to be joined to a coupling member; and
an inclined portion located between the main body and the connection portion and formed to have an outer diameter thereof decreasing from the main body toward the connection portion, the inclined portion continuing to the main body via a vulnerable portion,
wherein the main body has an outer diameter thereof gradually decreasing from a central portion thereof toward both ends thereof,
the main body has a thickness thereof gradually decreasing from said both ends toward the central portion,
the main body has an inner periphery formed in an arc shape along the axis, from one end of said both ends to the other end of said both ends, and
a plate thickness of the inclined portion decreases from the connection portion toward the main body.