Patent ID: 11904798
Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A webbing take-up device comprising:
a spool configured to take up a webbing of a seatbelt device by being rotated in a take-up direction;
a tube-shaped cylinder open at an axial direction leading end side;
a fluid supply unit provided at an axial direction base end side of the cylinder and configured to supply a fluid inside the cylinder in a vehicle emergency;
a rotating member including first thrust teeth and second thrust teeth formed to respectively a first face and a second face that are rotated coaxially and oppose one another in a rotation axial direction, and including first tapered portions and second tapered portions formed to distal end portions at a rotation radial direction outside of the first thrust teeth and the second thrust teeth, respectively and having a rotation axial direction dimension that decreases on progression toward the rotation radial direction outside, the spool being rotated in the take-up direction by the rotating member rotating toward one side; and
a moving member provided inside the cylinder and configured to be moved toward the axial direction leading end side of the cylinder under pressure of the fluid, and to cause the rotating member to rotate toward the one side by being moved in an engaged state with the first and second thrust teeth of the rotating member.