A door system for a vehicle includes a vehicle body structure and a first door structure. The first door structure includes a first door beam extending between a lower part and an upper part of the vehicle body structure when the first door structure is closed. The first door beam includes a first engaging part arranged to interact with an essentially correspondingly shaped first receiving guide rail when the first door structure is in the closed position. The first receiving guide rail extends in a lateral direction of the vehicle body structure, aligned with an extension of a first cross member extending in a lateral direction of the vehicle body structure. Upon a side collision, the first door beam is arranged to engage with the first cross member and the receiving guide rail is arranged to prevent the first engaging part from moving in a vertical direction.

A door beam structure includes a door beam attached to a side door so as to extend along a longitudinal axis of a vehicle. The door beam has a curved shape extending outwardly along a transverse axis of the vehicle and is spaced apart from a door skin in an inward direction along the transverse axis as the door beam extends to opposite end portions, along the longitudinal axis, of the door beam. The door beam includes a first end portion located in a frontward direction along the longitudinal axis, the first end portion being opposite to a center pillar. The first end portion is provided with a crush box.

Aside door structure for a vehicle includes a door beam that has hollow sections which are open at two ends in a longitudinal direction, and a hinge reinforcement member including a bent plate body in a crank shape that is joined to one of a front end and a rear end of the door beam. The hinge reinforcement member forms the crank shape by integrally forming a middle portion that closes an opening in the one of the front end and the rear end of the door beam and is joined to a stepped vertical wall of an inner panel of a side door, an outer end portion that is joined to a stepped outer side wall of the inner panel and an outer wall of the door beam, and an inner end portion that is joined to an inner wall of the door beam.

A door assembly for a vehicle is provided. The door assembly includes an inner panel and an outer panel which are joined together to define a central space therebetween. The central space has a front which faces towards the front of a vehicle and a back which faces towards a back of the vehicle. Both the inner and outer panels are made of aluminum, and at least one reinforcement beam made of steel is disposed in the central space between the aluminum inner and outer panels to provide the door assembly with increased impact resistance.

An impact absorbing structure for a vehicle wherein the impact absorbing structure includes a metal beam and a resin crash pad installed on a side of the metal beam where an external impact is received, the resin crash pad is installed within a range in a longitudinal direction of the metal beam, the range including a site including a longitudinal direction center of the metal beam and receives the external impact, the resin crash pad is composed of a thermoplastic resin composition, and the thermoplastic resin composition constituting the resin crash pad has a flexural modulus if 1 to 20 GPa as measured using an ISO test piece obtained by injection molding, a bending test is performed in accordance with ISO 178 at a strain rate of 2 mm/min in an atmosphere at a temperature of 23° C. and a humidity of 50% to measure the flexural modulus.

A door structure of a vehicle, capable of reliably transmitting a load, is provided. A rear side door (1) includes an inner panel (2) and an elongated door beam (4) that is attached to an outer side of the inner panel (2) in a vehicle width direction of a vehicle body and arranged along a front-rear direction of the vehicle body. The door beam (4) includes a first plate portion (11) of a first bracket (10), which has a first surface intersecting an axis along the vehicle width direction, and a vehicle width direction plate portion (21) of a second bracket (20), which has a second surface intersecting an axis along the front-rear direction of the vehicle body. The door beam (4) is joined to the inner panel (2) via both the first plate portion (11) and a second plate portion (12).

A door impact beam for a vehicle includes a beam main body 2 and an attaching portion 3 formed of first and second brackets 4 and 5, the first bracket 4 is coupled to the second bracket 5 by a coupling portion 20 to enable absorbing a relative movement due to difference in thermal expansion between the beam main body 2 and the components 6 of the vehicle door, a first locking hole 11 is bored in one of the first and second brackets 4 and 5 and a second locking hole 12 is bored in the other bracket, the first and second locking holes 11 and 12 are adapted to be locked by a temporarily fixing member 13 at a normal temperature and the temporarily fixing member 13 is adapted to be softened at a predetermined temperature or higher, and the second locking hole 12 includes an engaging hole 12a adapted to be engaged with the temporarily fixing member at a normal temperature and a slit 12b which is smaller in width than the maximum inner diameter of the engaging hole 12a.

A stiffening structure for an automotive door panel part according to the present invention includes a door outer panel 3 made of a metal sheet curved along a height direction, and in which a character line 3a is formed; and an impact beam 5 disposed at an inner surface side of the door outer panel 3. The stiffening structure improves tensile rigidity of the door outer panel 3 by attaching a stiffening member 7 made of resin to the inner surface of the door outer panel 3. The stiffening member 7 includes vertical bone portions 9 extending in a streak shape from the impact beam 5 to the character line 3a along a curve of the door outer panel 3. The vertical bone portions 9 are arranged at a predetermined interval in a front-rear direction of the door outer panel 3, and outer surface of the vertical bone portions 9 is bonded to the inner surface of the door outer panel 3.

A spacer is provided for mounting on a vehicle impact beam. The spacer includes a first surface having a first radius of curvature centered on a first axis, and a second surface opposite the first surface, the second surface having a second radius of curvature centered on a second axis extending parallel to the first axis and spaced apart from the first axis.

An impact beam for reinforcing a vehicle door includes an elongated beam having a hollow interior spanning a length of the elongated beam. The elongated beam includes an impact portion spanning the length and configured to face an exterior side of the vehicle door. The elongated beam also includes a cross-sectional shape having a top wall section and a bottom wall section that interconnect at a bend section of the cross-sectional shape, which includes the impact portion. The top and bottom wall sections each include an intermediate bend to define a substantially horizontal section and an angled section on opposing sides of the intermediate bend, where the intermediate bends are configured to limit inward displacement of the elongated beam from an impact force at the exterior side of the vehicle door.