JP2012116396A - Framework structure, framework reinforcing structure and pillar structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a framework structure for a vehicle, along with a framework reinforcing structure and a pillar structure for the vehicle, which can freely and readily control stiffness by each part of reinforcement beads.SOLUTION: In the pillar structure, the reinforcement bead 10 is configured such that the inclination angle of each right and left inclinations 10b of the reinforcement bead 10 in a longitudinal direction of a reinforcement 1 has a variation so as to change the amount of work hardening of the inclination 10b, accordingly the stiffness of an identical reinforcement bead 10 has a variation. The inclination 10b of the reinforcement bead 10 is configured to vary continuously, wherein an inclination angle α is large in a middle part and becomes smaller as proceeding upper and lower parts thereof. The inclination angle α of the inclination 10b is selected between the range of 0<α≤90 degrees and the amount of work hardening thereof becomes larger as the inclination angle α becomes larger to increase the stiffness.

Description

  The present invention relates to a vehicle skeleton structure, a skeleton reinforcement structure, and a pillar structure whose rigidity is changed in the longitudinal direction of a member.

  Conventionally, Japanese Utility Model Publication No. 58-41671 is known as a technology in such a field. The center pillar described in this publication is composed of an outer pillar and an inner pillar (lean force), and the inner pillar has a mountain-shaped convex portion (reinforcing bead portion) formed for main reinforcement and elongated in the center. Stepped convex portions (reinforcing bead portions) are formed. The angle-shaped convex portions that are largely deformed during pressing and the step-shaped convex portions that are smallly deformed during pressing differ in work hardening amount, and therefore the rigidity of the inner pillar is changed in the longitudinal direction.

Japanese Utility Model Publication No. 58-41671.

  However, conventionally, the problem is that the rigidity cannot be controlled freely and easily at each location of the reinforcing bead only by changing the amount of work hardening depending on the amount of protrusion of the protrusion. There is.

  It is an object of the present invention to provide a vehicle skeleton structure, a skeleton reinforcing structure, and a pillar structure in which rigidity can be freely and easily controlled at each location of a reinforcing bead portion.

The present invention is a vehicle skeleton structure in which a member obtained by press-molding a plate material is used.
The member is formed with a convex reinforcing bead portion having a mountain shape or a concave reinforcing bead portion having a concave shape,
The rigidity of the reinforcement bead part is changed by changing the amount of work hardening by the difference of the inclination angle of the inclination part at a plurality of places on the inclination part of the reinforcement bead. And

  A member used in the vehicle skeleton structure is formed with a convex chevron-shaped reinforcing bead portion or a concave trough-shaped reinforcing bead portion by press molding. And the rigidity of reinforcement bead part itself can be freely and easily changed in each location by changing the rigidity of reinforcement bead part using the inclined part of reinforcement bead part. Thereby, the freedom degree of design of a reinforcement bead part can be raised regarding rigidity.

The present invention is a skeleton reinforcing structure for a vehicle in which a reinforcing member formed by pressing a plate material is used.
The reinforcing member has a convex chevron-shaped reinforcing bead portion or a concave trough-shaped reinforcing bead portion,
It is characterized in that the inclination angle of the reinforcement bead part is changed at a plurality of slopes, and the rigidity of the reinforcement bead part is changed by changing the work hardening amount by the difference of the inclination angle of the inclination part. To do.

  The reinforcing member used in the vehicle skeleton reinforcing structure is formed with a convex mountain-shaped reinforcing bead portion or a concave valley-shaped reinforcing bead portion by press molding. And the rigidity of reinforcement bead part itself can be freely and easily changed in each location by changing the rigidity of reinforcement bead part using the inclined part of reinforcement bead part. Thereby, the freedom degree of design of a reinforcement bead part can be raised regarding rigidity.

The present invention is a pillar structure of a vehicle in which a reinforcement formed by pressing a plate material is used.
In the reinforcement, a convex reinforcing bead portion having a convex shape or a concave reinforcing bead portion having a concave shape is formed.
It is characterized in that the inclination angle of the reinforcement bead part is changed at a plurality of slopes, and the rigidity of the reinforcement bead part is changed by changing the work hardening amount by the difference of the inclination angle of the inclination part. To do.

  In the reinforcement used for the pillar structure of the vehicle, a convex mountain-shaped reinforcing bead portion or a concave valley-shaped reinforcing bead portion is formed by press molding. And the rigidity of reinforcement bead part itself can be freely and easily changed in each location by changing the rigidity of reinforcement bead part using the inclined part of reinforcement bead part. Thereby, the freedom degree of design of a reinforcement bead part can be raised regarding rigidity.

In addition, the reinforcement bead portion provided in the collision non-deformation region above the belt line portion of the reinforcement is provided with a gentle difference in inclination angle in the longitudinal direction of the inclined portion extending in the longitudinal direction of the reinforcement. It is preferable that
It is possible to appropriately control the deformation in the collision non-deformation region above the belt line portion.

Further, in the reinforcing bead portion provided in the non-collision deformation region, the inclination angle of the central portion in the longitudinal direction of the inclined portion is maximized, and the inclination angle of the inclined portion is decreased as it goes to the upper and lower ends of the reinforcing bead portion. And it is suitable if the amount of work hardening is gradually reduced toward the upper-lower end from the center part of a reinforcement bead part.
In such a configuration, the work hardening amount is continuously changed in the longitudinal direction in the reinforcing bead portion, and the work hardening amount is largest in the central portion of the reinforcing bead portion, so that the central portion is most deformed. It is difficult to do. Further, by adopting such a reinforcing bead portion in the collision non-deformation region of the lean reinforcement, it is possible to control the portion of the collision non-deformation region in the lean force so as to stand at the time of the side collision. It ensures the maintenance of the living space of the time.

In addition, the reinforcement bead portion provided between the upper hinge seat portion and the lower hinge seat portion in the collision deformation planned region below the belt line portion is inclined between the inclined portions located at both ends in the longitudinal direction of the reinforcement. It is preferable that the corner is given a gradual difference and the inclination angle of the lower inclined portion is smaller than the upper inclined portion.
By adopting such a configuration, in the collision deformation scheduled region, the buckling scheduled portions are provided at two locations between the upper hinge seat portion and the upper end of the reinforcing bead portion and between the lower hinge seat portion and the lower end of the reinforcing bead portion. It is possible to suppress the bending moment generated in the lean force by buckling the planned buckling portion at the time of a side collision, thereby reducing the deformation of the portion of the collision non-deformation region. Moreover, because the buckling scheduled part is folded from the bottom with a time difference, it can be controlled so that the part of the collision non-deformation region in the reinforcement is raised, and it is possible to secure the living space at the time of side collision. It is tightening.

  According to the present invention, the change in rigidity of the reinforcing bead portion can be easily controlled over a wide range in the longitudinal direction.

It is a perspective view which shows one Embodiment of the reinforcement applied to the pillar structure which concerns on this invention. It is a side view which shows the deformation | transformation state at the time of the side collision of lean reinforcement. It is an expansion perspective view of a reinforcement bead part. (A) is sectional drawing which follows the AA line of FIG. 3, (B) is sectional drawing which follows the BB line of FIG. It is a perspective view showing one embodiment of a member applied to the framework structure of the vehicle concerning the present invention.

  Hereinafter, preferred embodiments of a vehicle frame structure, a frame reinforcing structure, and a pillar structure according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, an upper mounting portion 1 b for welding to the roof side rail 2 is provided on the upper portion of the reinforcement 1 of the center pillar that is bridged between the roof side rail 2 and the rocker 3. A lower mounting portion 1 c for welding to the rocker 3 is provided at the lower portion of the reinforcement 1. Further, the reinforcement 1 is formed in a hat shape in cross section, and the main portion M of the reinforcement 1 extending between the upper attachment portion 1b and the lower attachment portion 1c is composed of a front portion 1a and both side portions 1d. A flange portion 1e is provided on both sides of the main portion M in the longitudinal direction.

  Further, an upper hinge seat portion 8 and a lower hinge seat portion 9 to which a door hinge is fixed are formed on the front portion 1 a of the reinforcement 1. In the center pillar, the outside of the reinforcement 1 having such a configuration is covered with a side outer panel (not shown).

  In the pillar, the front pillar has a role of securing a living space at the time of a frontal collision or an offset collision, while the center pillar is greatly involved in securing a living space at the time of a side collision. At the time of a side collision, in order to protect the passenger's head, it is necessary to prevent the roof from being crushed by preventing the upper half of the center pillar, that is, the upper side from the belt line portion L from falling inward.

  The reinforcement 1 is formed by drawing a plate material in order to increase rigidity. In the center pillar, as shown by a two-dot chain line in FIG. Is appropriately deformed so that the collision non-deformation region C on the upper side of the center pillar, that is, on the upper side of the belt line portion L, does not fall inward.

  Therefore, as shown in FIG. 1, convex reinforcing bead portions 10, 20, 30 are formed on the front portion 1 a of the main portion M of the reinforcement 1. Each reinforcement bead part 10,20,30 is formed in cross-sectional trapezoid shape.

  The reinforcement bead portion 10 is formed in the impact non-deformation region C above the belt line portion L in the reinforcement 1, and the reinforcement bead portion 20 is upper in the collision deformation scheduled region S below the belt line portion L. The reinforcing bead portion 30 is formed between the hinge seat portion 8 and the lower hinge seat portion 9, and the reinforcing bead portion 30 is formed below the lower hinge seat portion 9.

  As shown in FIGS. 3 and 4, the reinforcing bead portion 10 itself has its longitudinal rigidity changed. The trapezoidal trapezoidal reinforcing bead portion 10 includes a flat top portion 10a, an inclined portion 10b that is located on the left and right and extends in the longitudinal direction, and an inclined portion 10c that is located on the upper and lower sides and extends in a substantially horizontal direction. Is formed.

  This reinforcing bead portion 10 has the same reinforcement by changing the amount of work hardening of the inclined portion 10b by making a difference between the inclination angles of the left and right inclined portions 10b of the reinforcing bead portion 10 in the longitudinal direction of the reinforcement 1. The rigidity is changed in the bead portion 10. The inclined portion 10b of the reinforcing bead portion 10 is continuously changed, and the inclination angle α is large at the central portion (see FIG. 4B), and the inclination angle α decreases as it goes up and down (see FIG. 4B). (See (A) of FIG. 4).

  The inclination angle α of the inclined portion 10b is selected within the range of 0 <α ≦ 90 degrees, and as the inclination angle α increases, the work hardening amount increases and the rigidity increases.

  As described above, in the reinforcing bead portion 10 provided in the non-collision deformation region C, the reinforcing bead portion 10 maximizes the inclination angle α of the central portion in the longitudinal direction of the inclined portion 10b, and the reinforcing bead portion 10 The inclination angle α of the inclined portion 10b is made smaller toward the upper and lower ends, and the work hardening amount is gradually reduced from the central portion of the reinforcing bead portion 10 toward the upper and lower ends. The height H of the top portion 10a of the reinforcing bead portion 10 is constant in the longitudinal direction. The height H of the top part 10a is the height from the front part 1a.

  In the reinforcing bead portion 10 having such a configuration, the work hardening amount is continuously changed in the longitudinal direction, and the work hardening amount is the largest in the central portion of the reinforcing bead portion 10. It is difficult to deform. Then, by adopting such a reinforcing bead portion 10 in the collision non-deformation region C of the reinforcement 1, control is performed so that the portion of the collision non-deformation region C in the reinforcement 1 stands at the side collision. It is possible to maintain the living space at the time of a side collision.

  As shown in FIG. 1, the reinforcing bead portion 20 is formed between the upper hinge seat portion 8 and the lower hinge seat portion 9 in the collision deformation scheduled region S below the belt line portion L. This reinforcement bead portion 20 has an inclination angle β1, in comparison between the inclination angle β1 of the upper inclination portion 20a located at both upper and lower ends in the longitudinal direction of the reinforcement 1 and the inclination angle β2 of the lower inclination portion 20b. A moderate difference is added to β2 (see FIG. 2), and the inclination angle β2 of the lower inclined portion 20b is smaller than the inclination angle β1 of the upper inclined portion 20a. The height of the top portion 20c of the reinforcing bead portion 20 is constant in the longitudinal direction. The height of the top portion 20c is the height from the front portion 1a.

  When such a configuration is adopted, in the collision deformation scheduled region S, there are two locations between the upper hinge seat portion 8 and the upper end of the reinforcement bead portion 20 and between the lower hinge seat portion 9 and the lower end of the reinforcement bead portion 20. The buckling planned portions R1 and R2 are created, and the bending moment generated in the lean force 1 can be suppressed by buckling the buckling planned portions R1 and R2 at the time of a side collision. Can be reduced. In addition, since the buckling scheduled portions R1 and R2 are folded first from the lower buckling scheduled portion R1 with a time difference, control is performed so that the portion of the collision non-deformation region C in the reinforcement 1 is raised. It is possible to secure the living space at the time of a side collision.

  As shown in FIG. 1, in the front portion 1 a of the main portion M of the reinforcement 1, a mountain-shaped reinforcing bead portion 30 is formed below the lower hinge seat portion 9. By forming the reinforcing bead portion 30 at this position, it is possible to increase the strength below the lower hinge seat portion 9, thereby preventing buckling below the lower hinge seat portion 9 during a side collision and buckling. It is possible to reliably buckle at the planned portion R1.

  As described above, the reinforcement 1 used for the pillar structure is formed with the convex reinforcing bead portions 10, 20, 30 having a convex shape by press molding. And the rigidity of reinforcement bead parts 10 and 20 itself is freely changed in each part by changing the rigidity of reinforcement bead parts 10 and 20 using inclined parts 10b, 20a, and 20c of reinforcement bead parts 10 and 20. And it can be changed easily. Thereby, the freedom degree of design of the reinforcement bead parts 10 and 20 can be raised regarding rigidity.

  It goes without saying that the present invention is not limited to the embodiment described above.

  The present invention can be applied not only to the center pillar but also to the front pillar and the rear pillar.

  Further, as shown in FIG. 5, the present invention is applicable to all of the vehicle skeleton members 41 used for roof side rails, rockers and the like, and the reinforcing bead portion 40 has an inclined portion 40a in the longitudinal direction. The inclination angle is continuously changed. In this case, the inclination angle is small at the central portion of the inclined portion 40a of the reinforcing bead portion 40, and the inclination angle of the inclined portion 40a is increased toward both ends in the longitudinal direction, and the rigidity of the central portion of the reinforcing bead portion 40 is increased. It is the smallest.

  The reinforcement 1 is a pillar reinforcing member, but the present invention can also be applied to other reinforcing members of the skeleton.

  The reinforcing bead portions 10, 20, 30, and 40 are not limited to a convex shape, and can achieve the initial purpose even if they have a concave valley shape.

DESCRIPTION OF SYMBOLS 1 ... Reinforcement, 8 ... Upper hinge seat part, 9 ... Lower hinge seat part, 10, 20, 30 ... Reinforcement bead part, 10b, 20a, 20c ... Inclination part, 40 ... Reinforcement bead part, 40a ... Inclination part, 41 ... member, C ... collision non-deformation region, L ... belt line part, S ... collision deformation scheduled region, α ... inclination angle, β ... inclination angle

Claims (6)

In the framework structure of a vehicle in which a member formed by press-molding a plate material is used,
The member is formed with a convex reinforcing bead portion having a convex shape or a concave reinforcing bead portion having a concave shape,
The rigidity of the reinforcement bead portion is changed by changing the amount of work hardening by the difference in inclination angle of the inclined portion at a plurality of positions of the inclined portion of the reinforcing bead portion. A vehicle skeleton structure characterized by the above. In the skeleton reinforcing structure of a vehicle in which a reinforcing member formed by pressing a plate material is used,
The reinforcing member is formed with a convex reinforcing bead portion having a convex shape or a concave reinforcing bead portion having a concave shape,
At a plurality of the inclined portions of the reinforcing bead portion, a difference in inclination angle is given, and the amount of work hardening is changed by the difference in inclination angle of the inclined portion to change the rigidity of the reinforcing bead portion. A structure for reinforcing a skeleton of a vehicle. In the pillar structure of a vehicle in which a reinforcement made by pressing a plate material is used,
The lean reinforcement is formed with a mountain-shaped reinforcing bead portion having a convex shape or a valley-shaped reinforcing bead portion having a concave shape,
At a plurality of the inclined portions of the reinforcing bead portion, a difference in inclination angle is given, and the amount of work hardening is changed by the difference in inclination angle of the inclined portion to change the rigidity of the reinforcing bead portion. A pillar structure of a vehicle characterized by   The reinforcement bead portion provided in the collision non-deformation region above the belt line portion of the reinforcement is provided with a slow and steep difference in inclination angle in the longitudinal direction of the inclined portion extending in the longitudinal direction of the reinforcement. The pillar structure of the vehicle according to claim 3, wherein   In the reinforcing bead portion provided in the non-collision deformation region, the inclination angle of the central portion in the longitudinal direction of the inclined portion is maximized, and the inclination of the inclined portion is increased toward the upper and lower ends of the reinforcing bead portion. 5. The pillar structure according to claim 4, wherein a work hardening amount is gradually reduced from the central portion of the reinforcing bead portion toward the upper and lower ends by decreasing a corner.   The reinforcing bead portions provided between the upper hinge seat portion and the lower hinge seat portion in the collision deformation planned region below the belt line portion are inclined portions located at both ends in the longitudinal direction of the reinforcement. 4. The pillar structure according to claim 3, wherein an inclination angle is given with a gradual difference, and an inclination angle of the lower inclined portion is smaller than the upper inclined portion.

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