JP-7856685-B2 - Floor component manufacturing method

JP7856685B2JP 7856685 B2JP7856685 B2JP 7856685B2JP-7856685-B2

Inventors

丹羽健児

Assignees

フタバ産業株式会社

Dates

Publication Date: 20260511
Application Date: 20240205

Claims (4)

A method for manufacturing floor members included in the floor of a vehicle, In the main body member, which is a plate-shaped member, a curved bead is formed in multiple bead portions so as to protrude from the lower surface of the main body member, Multiple reinforcing members, which are plate-shaped members thicker than the main body member, are arranged so as to cover the upper surfaces of each of the multiple covering portions of the main body member. A joint is formed by welding the main body member and the multiple reinforcing members arranged on the multiple covering portions. The floor member is formed by cold press forming the aforementioned joining material, Equipped with, By the cold press forming described above, a lower ridge portion is formed corresponding to each of the reinforcing members, extending along the ridge line, and the lower ridge portion is curved so as to protrude toward the main body member in a cross section perpendicular to the ridge line. The bead portion is located on or near the lower ridge portion . At least one of the multiple bead portions is provided so as to traverse the covering portion. A method for manufacturing floor components.
A method for manufacturing floor members included in the floor of a vehicle, In the main body member, which is a plate-shaped member, a curved bead is formed in multiple bead portions so as to protrude from the lower surface of the main body member, Multiple reinforcing members, which are plate-shaped members thicker than the main body member, are arranged so as to cover the upper surfaces of each of the multiple covering portions of the main body member. A joint is formed by welding the main body member and the multiple reinforcing members arranged on the multiple covering portions. The floor member is formed by cold press forming the aforementioned joining material, Equipped with, By the cold press forming described above, a lower ridge portion is formed corresponding to each of the reinforcing members, extending along the ridge line, and the lower ridge portion is curved so as to protrude toward the main body member in a cross section perpendicular to the ridge line. The bead portion is located on or near the lower ridge portion . In the floor member, a gap is formed between at least one of the multiple bead portions in the main body member and the reinforcing member. A method for manufacturing floor components.
A method for manufacturing floor members included in the floor of a vehicle, In the main body member, which is a plate-shaped member, a curved bead is formed in multiple bead portions so as to protrude from the lower surface of the main body member, Multiple reinforcing members, which are plate-shaped members thicker than the main body member, are arranged so as to cover the upper surfaces of each of the multiple covering portions of the main body member. A joint is formed by welding the main body member and the multiple reinforcing members arranged on the multiple covering portions. The floor member is formed by cold press forming the aforementioned joining material, Equipped with, By the cold press forming described above, a lower ridge portion is formed corresponding to each of the reinforcing members, extending along the ridge line, and the lower ridge portion is curved so as to protrude toward the main body member in a cross section perpendicular to the ridge line. The bead portion is located on or near the lower ridge portion . At least one of the multiple reinforcing members is arranged to protrude from the main body member. A method for manufacturing floor components.
A method for manufacturing a floor member according to claim 1 or claim 2 , A method for manufacturing a floor member, wherein at least one of the multiple reinforcing members is arranged to protrude from the main body member.

Description

This disclosure relates to a method for manufacturing floor components. As described in Patent Document 1, there is a known technique for forming an overlapping blank by joining overlapping main steel plates and reinforcing steel plates by spot welding, and for manufacturing press-formed products by press forming the overlapping blank. Japanese Patent Publication No. 2020-199520 This is a perspective view of the flooring material.This is an explanatory diagram showing the main body member, upper mold, and lower mold in the bead formation process, viewed from the longitudinal end side of the main body member.This is an explanatory diagram of the upper surface of the main body member on which the bead has been formed.This is an explanatory diagram showing the joining material in the joining process, viewed from the longitudinal end side of the main component.This diagram shows a cross-sectional view perpendicular to the short-side direction of the portion of the joining material where a reinforcing member is provided, and an explanatory diagram showing the upper and lower dies of the pressing process.This diagram shows a cross-sectional view perpendicular to the short direction of the portion of the joint material formed in the pressing process where a reinforcing member is provided, and an explanatory diagram showing the upper and lower dies of the pressing process.This is a cross-sectional view perpendicular to the ridge of the lower ridge.This is a cross-sectional view perpendicular to the ridge of the lower ridge. Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [1. Flooring materials] The floor member 3 in this embodiment is a plate-shaped member that constitutes the floor of the passenger compartment in the vehicle body, and has a substantially rectangular shape extending in the longitudinal direction L (see Figures 1 and 6). As an example, the floor member 3 has a shape that is symmetrical with respect to a center line C passing through the center of the longitudinal direction L, and is mounted on the vehicle with the longitudinal direction L coinciding with the vehicle width direction. Of course, the shape of the floor member 3 can be determined as appropriate. Furthermore, the floor member 3 may be, for example, a member included in the floor of the vehicle's trunk compartment. The floor member 3 comprises a main body member 1, a plurality of reinforcing members 2, and a plurality of inclined portions 30. Hereafter, the upper and lower surfaces of the main body member 1 and the plurality of reinforcing members 2 in the floor member 3 mounted on the vehicle will be referred to as upper surfaces 1U and 2U, and lower surfaces 1L and 2L, respectively. [(1) Main body components] The main body member 1 is, for example, a substantially rectangular plate-shaped member extending in the longitudinal direction L (see Figure 1). For example, the main body member 1 may be made of a steel plate with a tensile strength of 440 MPa or less. Also, for example, the thickness of the main body member 1 may be 0.5 mm or more and 1.0 mm or less. [(2) Reinforcement members] Each reinforcing member 2 is, for example, a roughly rectangular plate-shaped member and is thicker than the main body member 1 (see Figure 1). For example, each reinforcing member 2 may be made of a steel plate with a tensile strength higher than that of the main body member 1 and a tensile strength of 440 MPa to 1470 MPa. Also, for example, the thickness of each reinforcing member 2 may be 1.0 mm to 1.8 mm. Each reinforcing member 2 is joined to the upper surface 1U of the main body member 1 for reinforcement. Each reinforcing member 2 covers the portion of the main body member 1 adjacent to the end portion extending in the longitudinal direction L (hereinafter, longitudinal end portion 12), and extends beyond the longitudinal end portion 12. Of course, the position of the reinforcing members 2 can be determined as appropriate; for example, the reinforcing members 2 may be positioned to extend beyond the end portion in the short direction S of the main body member 1. Furthermore, all or part of the reinforcing members 2 may be positioned so as not to extend beyond the main body member 1. Hereafter, the portion of the main body member 1 covered by the reinforcing members 2 will be referred to as the covering portion 11. [(3) Slope section] At least one inclined portion 30 is provided corresponding to each reinforcing member 2 (see Figure 1). The inclined portion 30 has a part of the reinforcing member 2 corresponding to the inclined portion 30 and a part of the covering portion 11 that overlaps the part of the reinforcing member 2. The inclined portion 30 is provided along a predetermined path 30A and extends in a direction that intersects with the reference plane R in a cross section perpendicular to the path 30A (see Figure 6). The reference plane R is a virtual plane perpendicular to the d