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Beam parts for vehicles

A vehicle and component technology, applied in vehicle components, substructures, superstructures, etc., can solve problems such as the buckling form of beam components that have not been studied in detail, and achieve the effect of increasing buckling load and improving quality efficiency

Active Publication Date: 2021-06-11
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Patent Document 1, the form of two-stage buckling of a beam member is not studied in detail, and there is still room for improvement in the mass efficiency of EA (Energy Absorption: energy absorption) for collisions.

Method used

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  • Beam parts for vehicles
  • Beam parts for vehicles
  • Beam parts for vehicles

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0057] figure 1 The illustrated beam member 100 constitutes a part of the vehicle body, and is arranged such that its longitudinal direction extends along the vehicle body front-rear direction. In addition, the vehicle body front-rear direction is a direction perpendicular to the vehicle body up-down direction with respect to the vehicle width direction. However, the terms "vehicle body front-rear direction", "vehicle body up-down direction", and "vehicle width direction" in the present invention include not only structures in which the directions are completely perpendicular to each other, but also within the range in which the effects of the present invention can be obtained. , from mutually vertically deviated configurations, it should be understood that it is also included in the present invention.

[0058] figure 1 It is a diagram showing a cross section perpendicular to the longitudinal direction of the beam member 100 (hereinafter simply referred to as the longitudina...

no. 2 Embodiment approach

[0089] Figure 6 ~ Figure 8 It is a sectional view showing the beam member 200 according to the second embodiment of the present invention. In the description of the beam member 200 , the same components as those already described in the first embodiment are denoted by the same reference numerals and descriptions thereof are omitted.

[0090] In the beam member 200 , the corner portion 131 on the side forming an acute angle between the first side wall 101 and the upper lateral rib 105 is provided with a larger portion than the portion around the first side wall 101 and the upper lateral rib 105 . The high-strength part of the strength. In addition, the corner portion 132 forming an acute angle between the first side wall 101 and the lower lateral rib 106 is provided with a high-strength portion that is stronger than the portion around the first side wall 101 and the lower lateral rib 106 . Specifically, as Figure 6 ~ Figure 8 As shown, in the corner portions 131 and 132 of...

no. 3 Embodiment approach

[0093] Figure 9 It is a sectional view showing the beam member 300 according to the third embodiment of the present invention. In the description of the beam member 300 , the same components as those already described in the first and second embodiments are denoted by the same reference numerals and their descriptions are omitted.

[0094] Figure 9 Beam member 300 shown with figure 1The beam member 100 shown is similarly provided with: a first side wall 101, a second side wall 102, an upper wall 103, a lower wall 104, an upper lateral rib 105, a lower lateral rib 106, an upper longitudinal rib 107 and a lower lateral rib. Longitudinal rib 108. Furthermore, in the beam member 300 , reinforcement portions are respectively provided on the outer wall portion 103 a of the upper wall 103 and the outer wall portion 104 a of the lower wall 104 . Specifically, the outer wall portions 103a, 104a of the beam member 300 are respectively provided with thick portions 301, 302 as the r...

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Abstract

A beam member for a vehicle has a longitudinal direction extending in the front-rear direction of a vehicle body and is formed in a closed cross-sectional shape to improve EA mass efficiency against side collisions. The vehicle beam member includes: a first side wall; a second side wall disposed on the inner side in the vehicle width direction relative to the first side wall; an upper wall and a lower wall defining a closed cross section together with the first side wall and the second side wall Structure; the upper transverse rib and the lower transverse rib are arranged between the upper wall and the lower wall, connect the first side wall and the second side wall, and extend linearly when viewed from the long side; the upper longitudinal rib, The upper wall and the upper transverse rib are arranged to face the first side wall, and the lower longitudinal rib is arranged to face the first side wall and connect the lower wall to the lower transverse rib. The upper lateral rib and the lower lateral rib extend non-parallel to each other when viewed from the longitudinal direction.

Description

technical field [0001] The present invention relates to a vehicle beam member having a longitudinal direction extending in a vehicle body front-rear direction and having a closed cross-sectional shape. Background technique [0002] Beam members such as side rails constituting the body of a vehicle such as an automobile are required to have high strength and high rigidity in order to ensure the safety of occupants in a vehicle collision, and to reduce weight in order to improve fuel efficiency. Here, the beam member is usually formed in a closed cross-sectional shape. In addition, as a beam member, in order to suppress buckling, a reinforcing plate may be attached to a beam body having a closed cross section to reinforce the beam body. [0003] For example, in the beam member disclosed in Patent Document 1, a curved portion is provided in a plate-shaped reinforcing member connecting one side surface of a rectangular beam body to the opposite side surface, and the plate-shape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D25/02B62D25/20B62D21/15
CPCB62D21/157B62D25/025B62D25/2036B62D29/008B62D21/02
Inventor 寺田荣宫本康史河之口敦史遊间贵史
Owner MAZDA MOTOR CORP
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