JP-WO2025057390-A5 -

Dates

Publication Date

20260511

Application Date

20230915

Description

To solve the above problems, according to one aspect of the technology of this disclosure, a vehicle pillar structure using a fiber-reinforced resin composite material is provided, comprising two cylindrical portions made of fiber-reinforced resin arranged side by side in the longitudinal direction of the vehicle body and each extending axially along the vehicle body height direction, having a first region where the two cylindrical portions are joined together in the upper part in the vehicle body height direction, and a second region where the two cylindrical portions branch off and are separated in the lower part in the vehicle body height direction, and each of the two cylindrical portions having a metal plate provided across the first region and the second region . Furthermore, in order to solve the above problems, according to another aspect of the technology of this disclosure, a vehicle pillar structure using a fiber-reinforced resin composite material is provided, comprising two cylindrical parts made of fiber-reinforced resin arranged side by side in the longitudinal direction of the vehicle body and each extending axially along the height direction of the vehicle body, having a first region where the two cylindrical parts are joined together in the upper part in the height direction of the vehicle body, and a second region where the two cylindrical parts branch off and are separated in the lower part in the height direction of the vehicle body, wherein the vehicle pillar structure has a first winding layer and a second winding layer in the first region, comprising continuous fibers wound around the axis around the two cylindrical parts, the first winding layer is provided extending from the first region to one of the two cylindrical parts in the second region, and the second winding layer is provided extending from the first region to the other of the two cylindrical parts in the second region. Furthermore, in order to solve the above problems, according to another aspect of the technology of this disclosure, a vehicle body side structure made of fiber-reinforced resin composite material is provided, comprising: a center pillar having two cylindrical parts made of fiber-reinforced resin arranged side by side in the longitudinal direction of the vehicle body and each extending axially along the vehicle body height direction, the first region where the two cylindrical parts are joined at the upper side in the vehicle body height direction, and the second region where the two cylindrical parts branch off and are separated at the lower side in the vehicle body height direction; and a side sill arranged along the longitudinal direction of the vehicle body to which the lower part of the center pillar is connected, a belt retractor being arranged in the space between the two cylindrical parts in the second region, and the two cylindrical parts each having a metal plate provided across the first region and the second region . Furthermore, in order to solve the above problems, according to another aspect of the technology of this disclosure, a vehicle body side structure using a fiber-reinforced resin composite material, comprising a center pillar having two cylindrical parts made of fiber-reinforced resin arranged side by side in the longitudinal direction of the vehicle body and each extending axially along the vehicle body height direction, the first region where the two cylindrical parts are joined at the upper side in the vehicle body height direction, and the second region where the two cylindrical parts branch off and are separated at the lower side in the vehicle body height direction, and a side section arranged along the longitudinal direction of the vehicle body to which the lower part of the center pillar is connected A vehicle body side structure is provided, comprising a belt retractor positioned in the space between the two cylindrical portions in the second region, the vehicle body side structure having a first winding layer and a second winding layer in the first region, the first winding layer extending from the first region to one of the two cylindrical portions in the second region, and the second winding layer extending from the first region to the other of the two cylindrical portions in the second region.