A door of recreational vehicles includes a first peripheral frame, a first outer panel, shaped to match the first peripheral frame and positioned inside the first peripheral frame, with the first outer panel extending according to a predetermined plane (P), and a second inner covering panel substantially superposed on the first outer panel.

A vehicle door assembly includes a door housing configured for covering a vehicle access opening. A frame member is disposed within the door housing. A module includes an intrusion beam coupled to the frame member and removable from the door housing. The module is configured to accept attachment of a module hinge and a module latch to provide a secondary door assembly. A modular vehicle door assembly and a method of assembling a door assembly to a vehicle are also disclosed.

A method includes molding an outer impact beam made of carbon fiber reinforced plastics (CFRP) and separately molding an inner impact beam made of CFRP. The outer impact beam and the inner impact beam are coupled to each other to form an impact beam and the impact beam is coupled to an inner panel of a vehicle door.

A door beam including an aluminum alloy extruded material of a closed section structure having a welded part along the longitudinal direction, webs and an outer flange are inhibited from buckling and further the welded part in the outer flange is inhibited from breaking at the time of collision. In a cross section of an aluminum alloy extruded material perpendicular to the extrusion direction, each of the webs includes an outer part connected to the outer flange and an inner part connected to an inner flange and the thickness of the outer part is larger than the thickness of the inner part. Each of the outer parts is positioned in a region outside a cross section center of the aluminum alloy extruded material in the vehicle body width direction.

A vehicle door assembly includes a door housing configured for covering a vehicle access opening. An intrusion beam is within the door housing. A module is received on the intrusion beam and removable from the door housing. A module hinge assembly is attachable to the module. A module latch assembly is attachable to the module for securing the module to extend across the vehicle access opening.

The present invention is predicated upon the provision of systems and methods for reinforcement of a structural member. More particularly, the present invention is predicated upon unique carrier configurations and application of reinforcing material thereto. In one configuration, the application of reinforcing material is achieved without the use of fasteners, adhesives, or both, for placement, locating and restrictive movement of the reinforcing material onto the carrier.

A vehicle body structure includes a reinforcing material layer formed of a fiber reinforced resin and a vehicle skeleton member having a closed sectional structure formed of metal. The reinforcing material layer is bonded to a surface of the vehicle skeleton member having a recessed portion recessed toward an inside of the closed sectional structure. An adhesive is disposed at least between the recessed portion and the reinforcing material layer.

A rigidity-improved vehicle panel door includes an external panel positioned, toward the outside of a vehicle, in a door of the vehicle, an internal panel, an external edge portion of the internal panel being joined to the external panel, and the internal panel being positioned, toward the interior of the vehicle, in the door, and a rigid structure in which a plurality of support members disposed in a longitudinal direction of the vehicle are coupled to a plurality of reinforcement members to form the shape of a quadrangle, the plurality of reinforcement members being provided on a front end portion of the door and a rear end portion of the door.

A rigidity-improved vehicle panel door includes an external panel positioned, toward the outside of a vehicle, in a door of the vehicle, an internal panel, an external edge portion of the internal panel being joined to the external panel and the internal panel being positioned, toward the interior of the vehicle, in the door of the vehicle, support members disposed in a longitudinal direction of the vehicle, reinforcement members coupled to a front end portion and a front end portion, respectively, of the door, joint members superposed and coupled to the reinforcement members, respectively and coupled to the support members to surround external surfaces of the support members.

A vehicle frame includes a first beam with a first wall and a second wall extended in a first beam longitudinal direction, wherein the first wall and the second wall are spaced from each other in a first beam transverse direction substantially perpendicular to the first beam longitudinal direction. The first beam includes at least one first beam reinforcement structure, the at least one first beam reinforcement structure including a first leg and a second leg disposed along the first beam and extended between the first wall and the second wall in the first beam transverse direction. The first leg and the second leg are angled toward each other along the first beam transverse direction from the second wall toward the first wall.