Abstract: A vehicle upper structure reduces noise in a cabin by preventing vibration of a roof panel while avoiding an increase in manufacturing cost and an increase in vehicle weight. A vehicle includes a roof panel, a front header, a ceiling, and a vibration damping member. The front header extends in a vehicle width direction on an inner side of the cabin from the roof panel. The ceiling covers the roof panel from the inner side of the cabin. The vibration damping member is fixed to an upper surface of the ceiling. The vibration damping member is arranged between a sun visor fixed portion and a gusset fixed portion in the vehicle width direction and near the front header. The vibration damping member has at least two resonance frequencies and is configured such that one resonance frequency thereof is substantially the same as a resonance frequency of the ceiling.

Abstract: The present disclosure provides a body structure for a vehicle capable of improving a vibration damping effect by a damping member while preventing an increase in an application amount of the damping member and a shape change of a component. Embodiments include a body structure for a vehicle in which a first bonded surface of a first body component and a second bonded surface of a second body component are bonded via a damping member, with which a portion between the first bonded surface and the second bonded surface is filled. The first bonded surface of the first body component has a vertical wall extending toward the second bonded surface or away from the second bonded surface. The portion between the first bonded surface and the second bonded surface is filled with the damping member such that the damping member contacts the vertical wall.

Abstract: Provided is a fiber reinforced plastic member made by a braiding technique to obtain high rigidity and superior vibration damping performance under a bending load. A reinforcing member made of carbon fiber reinforced plastic resin extends in a specific direction along an axis of the reinforcing member and includes a carbon fiber braided structure. The carbon fiber braided structure has a structure in which a plurality of axial yarns, a plurality of first braid yarns, and a plurality of second braid yarns are braided. A plurality of first braid yarns are wound to intersect the axis at a first braid angle. A plurality of second braid yarns are wound to intersect the axis at a second braid angle. The first braid yarns and the second braid yarns intersect each other.

Abstract: A reinforcing body is disposed in a closed cross sectional portion constituted by one or more vehicle body components. The reinforcing body is provided with a joining portion to be joined to the vehicle body components. The joining portion includes hard connecting portions connected to the vehicle body components in an abutting state, and a soft connecting portion connected to the vehicle body components via a vibration damping member. The storage shear rigidity (KB?) of the vibration damping member is set in the range: 800 N/mm<KB?<57500 N/mm.

Abstract: There are provided a floor panel, a tunnel portion which is provided to protrude at the floor panel, a pair of right-and-left tunnel side frames, a pair of right-and-left floor frames, and a band plate which is made from carbon fiber reinforced plastic, an inward end portion which being connected to the tunnel side frame and an outward end portion of which being connected to the floor frame, wherein the band plate portion includes a first displacement following portion which is configured to be displaced, following displacement of the tunnel side frame and a second displacement following portion which is configured to be displaced, following displacement of the floor frame, and the first displacement following portion and the second displacement following portion are configured to be asymmetrical relatively to a longitudinal-directional axis.

Abstract: There are provided a floor panel, a tunnel portion which is provided to protrude at the floor panel, a pair of right-and-left tunnel side frames, a pair of right-and-left floor frames, and a band plate which is made from carbon fiber reinforced plastic, an inward end portion which being connected to the tunnel side frame and an outward end portion of which being connected to the floor frame, wherein the band plate portion includes a first displacement following portion which is configured to be displaced, following displacement of the tunnel side frame and a second displacement following portion which is configured to be displaced, following displacement of the floor frame, and the first displacement following portion and the second displacement following portion are configured to be asymmetrical relatively to a longitudinal-directional axis.

Abstract: A reinforcing body is disposed in a closed cross sectional portion constituted by one or more vehicle body components. The reinforcing body is provided with a joining portion to be joined to the vehicle body components. The joining portion includes hard connecting portions connected to the vehicle body components in an abutting state, and a soft connecting portion connected to the vehicle body components via a vibration damping member. The storage shear rigidity (KB?) of the vibration damping member is set in the range: 800 N/mm<KB?<57500 N/mm.

Abstract: In a vehicle-body structure of a vehicle, where suspension forming members are attached to a vehicle body, there are provided a first face portion, through which the suspension forming member extends, a second face portion provided to face to the first face portion, and a support member provided between the first face portion and the second face portion and supporting the suspension forming members, and the support member is joined to said second face portion via a reinforcing member which is formed integrally with the support member or formed separately from the support member. Accordingly, vibrations of the support member can be properly restrained.

Abstract: In a vehicle-body structure of a vehicle which comprises at least one vehicle-body forming member forming a closed-section portion continuously in a specified direction, a partition member extending in the specified direction and partitioning an inside of the closed-section portion, and a bulkhead provided in the closed-section portion and joined to the vehicle-body forming member, the bulkhead is joined to an inner face of the vehicle-body forming member at specified positions which are located on both sides of the partition member, and the bulkhead is joined to a specified portion of the partition member which is located in the vicinity of opening portions formed at the partition member or to an end portion of the partition member in the specified direction.

Abstract: In a vehicle-body structure of a vehicle which comprises vehicle-body forming members forming a closed-section portion and having a dent portion which dents toward an inside of the closed-section portion, and a reinforcing member provided in the closed-section portion and joined to the vehicle-body forming members, a joint portion of the vehicle-body forming members and the reinforcing member includes a rigid joint portion where the vehicle-body forming members and the reinforcing member are joined with a direct contact thereof and a flexible joint portion where the vehicle-body forming members and the reinforcing member are joined via a damping member provided therebetween, and this joint portion is provided at or in the vicinity of the dent portion.

Abstract: In a frame having a closed-section portion which is formed by joining a first member having a U-shaped section and a second member having a flat-plate shape, a bulkhead is provided in the closed-section portion as a reinforcing member, flanges of the bulkhead and the first and second members are joined with a rigid joint portion where they are joined by a spot welding and a flexible joint portion where they are joined via a damping member. Thereby, transmission of vibrations can be properly restrained, improving the rigidity of the portion having the closed-section portion.

Abstract: In a vehicle-body structure of a vehicle which comprises a frame comprised of vehicle-body forming members forming a closed-section portion, a reinforcing member provided in the closed-section portion and joined to the frame, and another vehicle-body forming member joined to an outer face of the frame, which is different from the vehicle-body forming members of the frame, a joint portion of the frame and the reinforcing member includes a rigid joint portion where the frame and the reinforcing member are joined with a direct contact thereof and a flexible joint portion where the frame and the reinforcing member are joined via a damping member provided therebetween, and the joint portion is provided at a specified position on an inner face of the frame located in the vicinity of a portion where the forming member is joined to the frame.

Abstract: In a vehicle-body structure of a vehicle, where suspension forming members are attached to a vehicle body, there are provided a first face portion, through which the suspension forming member extends, a second face portion provided to face to the first face portion, and a support member provided between the first face portion and the second face portion and supporting the suspension forming members, and the support member is joined to said second face portion via a reinforcing member which is formed integrally with the support member or formed separately from the support member. Accordingly, vibrations of the support member can be properly restrained.

Abstract: In a vehicle-body structure of a vehicle which comprises vehicle-body forming members forming a closed-section portion and having a dent portion which dents toward an inside of the closed-section portion, and a reinforcing member provided in the closed-section portion and joined to the vehicle-body forming members, a joint portion of the vehicle-body forming members and the reinforcing member includes a rigid joint portion where the vehicle-body forming members and the reinforcing member are joined with a direct contact thereof and a flexible joint portion where the vehicle-body forming members and the reinforcing member are joined via a damping member provided therebetween, and this joint portion is provided at or in the vicinity of the dent portion.

Abstract: In a vehicle-body structure of a vehicle which comprises at least one vehicle-body forming member forming a closed-section portion continuously in a specified direction, a partition member extending in the specified direction and partitioning an inside of the closed-section portion, and a bulkhead provided in the closed-section portion and joined to the vehicle-body forming member, the bulkhead is joined to an inner face of the vehicle-body forming member at specified positions which are located on both sides of the partition member, and the bulkhead is joined to a specified portion of the partition member which is located in the vicinity of opening portions formed at the partition member or to an end portion of the partition member in the specified direction.

Abstract: In a frame having a closed-section portion which is formed by joining a first member having a U-shaped section and a second member having a flat-plate shape, a bulkhead is provided in the closed-section portion as a reinforcing member, flanges of the bulkhead and the first and second members are joined with a rigid joint portion where they are joined by a spot welding and a flexible joint portion where they are joined via a damping member. Thereby, transmission of vibrations can be properly restrained, improving the rigidity of the portion having the closed-section portion.