Vehicle frame

Abstract

A vehicle body frame with improved collision safety while suppressing a cost and increase in weight. A clearance W1 between center members is widened in comparison with clearances between front members and between rear members because bent parts bent inward in the vehicle width direction and bent upward in the vehicle height direction are molded respectively in the front member and the rear member. The lateral width of the center member with the widened clearance is set to be wider than the lateral width of the front member and the rear member. Therefore, in the case of a side face collision, the shock can be received by the center member with the wide lateral width and high rigidity. In the case of a front face collision, great bending moment is generated in the connection part between the front member and the center member when force is transmitted from the front member to the rear member, however, the bent part can exhibit rigidity resisting the moment because the lateral width of the bent part is set in molding to be wider than the lateral width of other parts in the side member.

Description

Technical field [0001] The present invention relates to a frame used in vehicles such as RVs and SUVs, and particularly relates to a frame that can suppress the increase in cost and weight and can improve the collision safety of the vehicle. Background technique [0002] Figure 8 It shows the frame used in known vehicles such as RV and SUV. As shown in the figure, the frame a is composed of a pair of side members b and b provided at a certain interval in the vehicle width direction and a cross member c that is hung between the side members b and b. [0003] The side member b is formed by welding the outer side piece d and the inner side piece e integrally formed in the front-rear direction of the vehicle body with a U-shaped cross section. The thickness f of each side member b is constant along the front-rear direction of the vehicle body. From the rear part g of the car body to the central part h, the interval between the side members b and b is the interval i where the rear w...

AI Technical Summary

Problems solved by technology

[0006] However, if the interval i of the central portion h is set to Figure 8 The interval of the front j is even larger, and since the interval of the front j must maintain a relatively narrow interval k in order to ensure the steering angle of the front wheels, the gap between the interval k of the front j and the interval i of the central part h must be increased

Therefore, in a frontal collision, when the force is transmitted from the front part j to the central part h, the moment generated at the connecting part (curved part p) will increase, and the curved part p will be enlarged and deformed, resulting in the deformation of the passenger compartment of the vehicle body

[0007] Moreover, even if it is a side collision, since the main components of the impact such as side bars have become more and more rigorous in recent years, it is no longer possible to simply arrange the side beam b (central part h) of the passenger compartment on the outside.

As a countermeasure, methods such as adding a reinforcement plate to the central part h have been proposed, but this will increase weight and cost

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