KR-20260062833-A - VEHICLE STRUCTURE

KR20260062833AKR 20260062833 AKR20260062833 AKR 20260062833AKR-20260062833-A

Abstract

The vehicle structure comprises a frame member extending in the vehicle's front-rear direction on the side of the vehicle's width direction, and a crash box positioned on the outer side of the frame member in the vehicle's front-rear direction, extending in the vehicle's front-rear direction and formed integrally with the frame member, and having a first wall portion formed at the end of the vehicle's front-rear direction located at least on the side of the crash box in the frame member's cross section, extending in the vehicle's front-rear direction when viewed from the vehicle's width direction with the vehicle's vertical direction as the plate thickness direction, and a second wall portion formed at a height overlapping with the first wall portion when viewed from the vehicle's front-rear direction, extending in the vehicle's front-rear direction when viewed from the vehicle's width direction, and having the vehicle's vertical direction as the plate thickness direction and extending in the vehicle's front-rear direction when viewed from the vehicle's width direction, within the cross section of the crash box.

Inventors

무라시게 노리히로

Assignees

도요타지도샤가부시키가이샤

Dates

Publication Date: 20260507
Application Date: 20250929
Priority Date: 20241029

Claims (8)

A skeletal member extending in the front-rear direction of the vehicle on the side of the vehicle in the width direction, and A crash box positioned on the outer side in the front-rear direction of the vehicle compared to the above-mentioned frame member, extending in the front-rear direction of the vehicle, and formed integrally with or integrally with said frame member. Equipped, In the interior of the cross-section of the above-mentioned frame member, a first wall portion is provided at least at the end in the front-rear direction of the vehicle located on the crash box side of the said frame member, and extends in the front-rear direction of the vehicle when viewed from the vehicle width direction with the vehicle vertical direction as the plate thickness direction, and In the interior of the cross-section of the above crash box, a second wall portion is provided at a height overlapping with the first wall portion when viewed from the vehicle's front-rear direction, and extends in the vehicle's front-rear direction when viewed from the vehicle's width direction, with the vehicle's vertical direction being the plate thickness direction. Vehicle structure.
In paragraph 1, The above crash box is configured to include an upper wall portion constituting the upper part in the vertical direction of the vehicle and a lower wall portion opposite to the upper wall portion and constituting the lower part in the vertical direction of the vehicle. A vehicle structure in which the first wall portion is provided in plurality, and at least one of the upper wall portion and the lower wall portion of the crash box is provided at a height that overlaps with at least a part of the first wall portion when viewed from the front and rear directions of the vehicle.
In paragraph 1 or 2, Further equipped with bumper reinforcement extending in the vehicle width direction on the outer side in the front-rear direction of the vehicle than the above crash box, A vehicle structure having a third wall portion that is provided at a height overlapping with the second wall portion when viewed from the front-rear direction of the vehicle, within the cross-section of the bumper reinforcement, and extends in the front-rear direction of the vehicle when viewed from the width direction of the vehicle, with the vehicle's vertical direction being the plate thickness direction.
In paragraph 3, A vehicle structure in which the first wall portion is integrally molded to the skeletal member, the second wall portion is integrally molded to the crash box, and the third wall portion is integrally molded to the bumper reinforcement.
In paragraph 1 or 2, The above-mentioned skeletal member is positioned at the rear of the vehicle and is a rear side member that is curved to be convex toward the upper side of the vehicle when viewed from the width direction of the vehicle, forming a vehicle structure.
In paragraph 1 or 2, A vehicle structure in which the above-mentioned skeletal member is formed in an open cross-section and the above-mentioned crash box is formed in a closed cross-section.
In paragraph 5, The above-mentioned first wall portion is a vehicle structure that extends in the vehicle's front-rear direction to connect the rear portion of the skeletal member in the vehicle's front-rear direction and the lower edge portion of the central portion of the skeletal member in the vehicle's front-rear direction.
In paragraph 2, The above crash box is configured to further include a pair of first side wall sections that form a rectangular shape and are arranged oppositely by connecting the upper wall section and the lower wall section, and the frame member is provided with a connection section to which the crash box is connected. The above connection part is, A connecting wall coupled to the upper wall portion of the above crash box, and A vehicle structure comprising a pair of second side wall portions that are respectively lowered from the above-mentioned connecting wall toward the lower side of the vehicle and arranged oppositely, and each coupled to the pair of first side wall portions of the above-mentioned crash box.

Description

Vehicle Structure The present disclosure relates to a vehicle structure. Japanese Patent Publication No. 2006-062561 discloses a technology regarding a shock absorption structure of a vehicle having a pair of crash boxes each interposed between a bumper reinforcement extending in the width direction of the vehicle and a pair of side members extending in the front-rear direction of the vehicle at both ends of the bumper reinforcement extending in the width direction of the vehicle. In this related technology, the crash box has a hollow structure that opens in the vertical direction of the vehicle, and the upper or lower opening is closed by a load adjustment plate. In addition, regarding the bumper reinforcement, crash box, and side member, welding delamination is suppressed by bolting them together, and the crash box absorbs impact energy during a vehicle collision. However, in a vehicle, when an impact load is applied along the front-rear direction, the impact load is transmitted between the side member and the crash box; yet, further improvement is required from the perspective of the efficiency of impact load transmission (so-called load transfer efficiency). The present disclosure provides a vehicle structure capable of improving load transfer efficiency when an impact load is input along the front-rear direction of the vehicle, taking into account the above facts. A vehicle structure according to a first embodiment comprises a frame member extending in the vehicle's front-rear direction on the side of the vehicle's width direction, and a crash box positioned outside the frame member in the vehicle's front-rear direction, extending in the vehicle's front-rear direction, and formed integrally with or integrally with the frame member; a first wall portion formed at the end of the vehicle's front-rear direction located at least on the side of the crash box in the frame member's cross section, extending in the vehicle's front-rear direction when viewed from the vehicle's width direction with the vehicle's vertical direction as the plate thickness direction, and a second wall portion formed at a height overlapping the first wall portion when viewed from the vehicle's front-rear direction, extending in the vehicle's front-rear direction when viewed from the vehicle's width direction, and formed at the height overlapping the first wall portion when viewed from the vehicle's front-rear direction, extending in the vehicle's front-rear direction when viewed from the vehicle's width direction. The vehicle structure according to the first embodiment comprises a frame member and a crash box. The frame member extends in the front-rear direction of the vehicle from a side in the vehicle width direction. The crash box is positioned on the outer side in the front-rear direction of the vehicle compared to the frame member, extends in the front-rear direction of the vehicle, and is formed integrally with or integrally with said frame member. A first wall portion is provided in the frame member, and a second wall portion is provided in the crash box. The first wall portion is provided within the cross-section of the frame member, at least at the end in the front-rear direction of the vehicle located on the crash box side of the frame member, and extends in the front-rear direction of the vehicle when viewed from the vehicle width direction with the vehicle vertical direction as the plate thickness direction. In addition, the second wall is provided at a height that overlaps with the first wall provided in the frame member when viewed from the front-rear direction of the vehicle, within the cross-section of the crash box, and extends in the front-rear direction of the vehicle when viewed from the width direction of the vehicle, with the vehicle's vertical direction being the plate thickness direction. In this manner, in the present embodiment, a first wall portion is provided in the frame member and extends in the front-rear direction of the vehicle with the vertical direction of the vehicle as the plate thickness direction, and a second wall portion is provided in the crash box and extends in the front-rear direction of the vehicle with the vertical direction of the vehicle as the plate thickness direction. Furthermore, the first wall portion and the second wall portion are provided at an overlapping height when viewed from the front-rear direction of the vehicle. For this reason, in the present embodiment, when an impact load is input along the front-rear direction of a vehicle, the impact load is efficiently transferred from the crash box to the frame member along the front-rear direction of the vehicle. As a result, it is possible to improve the energy absorption effect (hereinafter simply referred to as the "EA effect") by the crash box. In addition, in the present embodiment, a first wall and a second wall, which efficiently transmit impact loads between the frame member and the crash box, are respectively provided wi