| 摘要 |
An inner structure of a protective helmet secured to a helmet shell comprises a head bearing ring, a plurality of belt straps forming a spider and each having an end secured to the helmet shell and a plurality of fasteners each corresponding to the respective belt strap and formed of plastics. Each fastener has a shackle-shaped portion connected to the end of the respective belt strap. The head bearing ring is formed of plastics. Each fastener is connected to the head bearing ring by a hinge joint and formed integrally therewith such that the fastener is pivoted relative to the head bearing ring. |
