JP2012115882A - Embossed thin plate material, and seat slide rail for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an embossed thin plate material in which its rigidity is increased by attaching recesses and projections to at least part of a metal thin plate and which is of high rigidity as a whole with a different flexural rigidity depending on a direction (with a high rigidity in a specific direction and a comparatively low rigidity in another direction).SOLUTION: The embossed thin plate material is characterized in that: with a neutral plate surface prior to applying recesses and projections as a reference, a projection row part in which a plurality of projections projecting at intervals on one side of the front and back surfaces of the neutral plate surface are arranged in rows and a recess row part in which a plurality of recesses projecting at intervals on the other side of the front and back surfaces thereof are arranged are arranged alternately; and the projection part of the projection row part and the recess part of the recess row part are arranged in a positional relationship in which both parts are not located on one straight line when viewed from a direction perpendicular to the projection row part and the recess row part in the neutral plate surface plane.

Description

  The present invention relates to an embossed thin plate material (highly rigid thin plate material) whose rigidity (particularly bending rigidity) is increased by providing unevenness (emboss) on a metal thin plate, and a vehicle seat slide rail using the embossed thin plate material.

  It is known that, when a fine (regular) unevenness is applied to a metal thin plate, the rigidity is generally increased. However, it is difficult to say that the conventional embossed thin plate material has sufficient rigidity. In addition, the metal sheet material does not necessarily need to have high rigidity that is uniform in all directions, and may be required to have higher rigidity in a specific direction than rigidity in another specific direction.

  For example, the plate material for the upper rail of the seat track apparatus is long in the vehicle front-rear direction and short in the vertical direction. And the lower end part is supported by the vehicle floor side, and an upper end part is fixed to the seat side. When the vibration of the vehicle is applied, the short upper end in the vertical direction may be deformed by the bending force applied in the left-right direction (vehicle width direction), whereas the longer end in the front-rear direction Even if a bending force is applied, there is little risk of deformation. The distribution of unevenness of the conventional embossed thin plate material has the same regularity in two orthogonal directions, and there is no idea that the bending rigidity is increased or decreased depending on the direction.

Japanese Patent Laid-Open No. 56-134023 JP-A-2-52125 JP-A-8-74469

  The present invention relates to an embossed thin plate material that has increased rigidity by applying unevenness to a metal thin plate, and has high rigidity as a whole, and the rigidity varies depending on the direction (relatively high rigidity in a specific direction, another specific The aim is to obtain an embossed sheet material (relatively low stiffness in the direction).

  The present invention provides an embossed thin plate material having increased rigidity by providing irregularities on at least a part of a metal thin plate, and projects on one side of the front and back surfaces with a gap from the neutral plate surface before the irregularities are provided. A plurality of convex portions arranged in a row, and a plurality of concave portions protruding in a row on the other side of the front and back are alternately arranged, and The convex part of the convex part and the concave part of the concave part are arranged in a positional relationship that does not lie on a straight line when viewed from the direction perpendicular to the convex part and the concave part in the neutral plate surface plane. It is characterized by.

  The arrangement pitch of the convex portions of the convex row portions and the arrangement pitch of the concave portions of the concave row portions can be the same or different.

  The neutral height position (neutral position) corresponding to the neutral plate surface can be formed in a linear shape or a plane with a certain width.

  From a macroscopic viewpoint, it is practical that the shape of the convex portion and the concave portion (planar shape) is a truncated quadrangular pyramid shape (rectangle) or a truncated hexagonal pyramid shape (hexagonal shape).

  The embossed thin plate material of the present invention can be used in a mode in which the convex portion and the concave portion are formed on a part of the metal thin plate material in addition to the mode in which the convex portion and the concave portion are formed on the entire plate surface. .

  The embossed thin plate material of the present invention can be used for an upper rail of a vehicle seat slide rail in a vehicle-related part, for example, with the direction of the convex portion and the concave portion directed in the vertical direction.

  According to the embossed thin plate material of the present invention, not only the rigidity of the thin plate material is increased as a whole, but also one end portion in the extending direction of the convex portion and the concave portion is fixed to the other end portion. Bending rigidity when bending force is applied may be larger than bending rigidity when bending force is applied to the other end by fixing one end in the direction perpendicular to the extending direction of the protruding portion and the recessed portion. it can.

(A), (B), (C) is the top view, front view, and side view which show one Embodiment of the embossing thin plate material by this invention. (A), (B), (C) is the top view, front view, and side view which show one Embodiment of the embossing thin plate material by this invention. It is a side view of the seat slide apparatus which used the embossing thin plate material by this invention for an upper rail. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing corresponding to FIG. 4 which shows another embodiment of the seat slide apparatus which used the embossing thin plate material by this invention for an upper rail.

FIG. 1 shows a first embodiment of a metal embossed thin plate material 10 according to the present invention. In the drawing, the plate thickness is drawn by a line. The embossed thin plate material has a convex row portion 20 and a concave row portion 30 which are parallel to each other and face the vertical direction Y in FIG. The convex portion 20 has one surface (perpendicular to the paper surface of FIG. 1 (A)) on the front and back sides of the thin plate material surface (neutral plate surface, neutral height position N _x indicated by a broken line) before being provided with unevenness. A plurality of convex portions 21 are formed so as to be aligned in the Y direction at a predetermined interval (pitch P) in the front direction, above (B), and to the left of (C). The concave portion 30 includes the neutral plate surface (neutral height position N _x ) and the other direction of the front and back (back direction perpendicular to the paper surface of FIG. 1 (A), the lower side of the same (B), and the same (C). A plurality of recesses 31 are formed in the Y direction at regular intervals (pitch P) on the right side. Between the convex row part 20 and the凹列portion 30, straight neutral height position N _Y in the Y direction is located. “+” And “−” attached to FIG. 1A mean a convex portion and a concave portion, respectively. The convex portion 21 and the concave portion 31 have the same shape and have a truncated quadrangular pyramid shape (a quadrangular pyramid with a cut head portion) (planar quadrangular shape). The distance Q between the edges of the convex portions 21 (concave portions 31) adjacent in the Y direction varies depending on the depth d of the convex portions 21 (concave portions 31) and the angle of the quadrangular pyramids.

On the other hand, the convex portion 21 of the convex portion 20 and the concave portion 31 of the concave portion 30 are in a straight line when viewed from the X direction orthogonal to the Y direction in the neutral plate surface plane (paper surface of FIG. 1A). It is provided in the positional relationship which is not located in. In the embodiment of FIG. 1, the convex portion 21 or the concave portion 31 always exists on the neutral height position N _X in the X direction. In the illustrated example, the positions of the convex portion 21 and the concave portion 31 are shifted by a half pitch P / 2 in the Y direction, but this shift amount may not be a half pitch.

Since the embossed thin plate material 10 is provided with the convex portion 21 and the concave portion 31, the overall rigidity is increased and the rigidity (bending rigidity) is different in two orthogonal directions. Now, when the lower end of the embossed thin plate material is fixed in FIG. 1C and bending force F1 is applied to the upper end (the former), the right end of the embossed thin plate material is fixed in FIG. When compared with the case where the bending force F2 is applied (the latter), the latter has a clear neutral height position _NY in the Y direction between the convex portion 20 and the concave portion 30, so that the bending is compared. On the other hand, the former is unlikely to be bent because the convex portion 21 or the concave portion 31 always exists on the neutral height position N _X in the X direction. That is, the embossed thin plate material described above has higher bending rigidity in the former direction than bending rigidity in the latter direction.

FIG. 2 shows another embodiment of an embossed sheet material 10 according to the present invention. This embodiment differs from the embodiment of FIG. 1 in that the neutral height positions N _X and N _Y that are both linear in the embodiment of FIG. 1 are changed to neutral planes NP _X and NP _Y with broken lines. Elements that are the same as the form are given the same reference numerals. Also in this embodiment, the same effect as that of the first embodiment can be obtained.

  In the above embodiment, regularity and symmetry exist in the arrangement positions of the convex portions 21 of the convex row portions 20 and the concave portions 31 of the concave row portions 30, so that they are easy to manufacture and partially from a large plate material. Even if the small plate material is taken out, there is an advantage that the physical properties of the small plate material are the same (similar). However, depending on the mode, the convex portion 21 of the convex portion 20 (the convex portion 21 of the convex portion 20 may be changed by changing the arrangement pitch of the convex portions 21 of the convex portion 20 and the arrangement pitch of the concave portions 31 of the concave portion 30 or by making the interval random. It is also possible to arrange them in such a positional relationship that the center of the concave portion 31 and the concave portion 31 (the center thereof) of the concave row portion 30 do not lie on a straight line when viewed from the X direction on the plane of the neutral plate surface. The shape of the convex portion 21 and the concave portion 31 is practically a truncated hexagonal pyramid shape (hexagonal shape) other than the truncated quadrangular pyramid shape. Moreover, you may make the shape of the convex part 21 and the recessed part 31 mutually different.

  The embossed thin plate material 10 of the present embodiment can be used as, for example, an upper rail material of a vehicle seat track apparatus. 3 and 4 show the embodiment. As is well known, the seat track device 40 includes a lower rail 41 fixed to the vehicle floor and an upper rail 42 that is slidably fitted to the lower rail 41 and is long in the vehicle front-rear direction. Since the lower end of the upper rail 42 is supported on the vehicle floor surface side via the lower rail 41 and the upper end is fixed to the seat 43, the upper end is easily shaken in the left-right direction due to vibration applied to the vehicle. Therefore, in the embodiment in which the embossed thin plate material 10 is used for the upper rail 42, the hatching of the upper rail 42 having at least a reverse T-shaped cross section with the X direction of the embossed thin plate material 10 in FIG. Used as (at least one of) the up-down direction walls 42V. The direction of F1 in FIG. 1 and FIG. 2C corresponds to the force in the lateral direction of the vehicle, and the embossed thin plate material 10 has a high bending rigidity in this direction. (Vibration) can be prevented.

  FIG. 5 shows another cross-sectional shape example of the upper rail 52 of the seat track device 50. The upper rail 52 has a so-called hat cross section, and this embossing is performed on the vertical wall 52V that is at least hatched.

  The upper rails 42 and 52 as described above are formed by forming the convex row portion 20 and the concave row portion 30 (emboss) on the vertical wall 42V and 52V forming portion of a part of the metal plate material, and bending them later. To do.

  The embossed thin plate material of the present invention can be used for a long material that is long in the front-rear direction, for example, a chassis aggregate, a vehicle door panel, etc.

10 Embossed thin plate material 20 Convex part 21 Convex part 30 Concave part 31 Concave part 40 Seat rail device 42 Upper rail N _X N _Y NP _X NP _Y Neutral height position P Pitch

Claims (7)

In embossed thin plate material that has increased rigidity by providing irregularities on at least a part of the metal thin plate, a plurality of convex portions projecting at an interval on one side of the front and back with respect to the neutral plate surface before the irregularities are applied Are alternately arranged, and a plurality of concave portions projecting at intervals on the other side of the front and back are arranged in rows, and the convex portions The concave portions of the convex portion and the concave row portion are arranged in a positional relationship that is not located on a straight line when viewed from the direction perpendicular to the convex row portion and the concave row portion in the neutral plate surface plane,
Embossed sheet material characterized by. The embossed thin plate material according to claim 1, wherein the neutral plate surface exists between the convex portions of the convex portion, between the concave portions of the concave portion, and between the convex portion and the concave portion. Embossed sheet material. The embossed thin plate material according to claim 1 or 2, wherein the arrangement pitch of the convex portions of the convex portion and the arrangement pitch of the concave portions of the concave portion are the same. 3. The embossed thin plate material according to claim 1 or 2, wherein the arrangement pitch of the convex portions of the convex portion is different from the arrangement pitch of the concave portions of the concave portion. 5. The embossed thin plate material according to claim 1, wherein the shape of the convex portion and the concave portion is a truncated quadrangular pyramid shape or a truncated hexagonal pyramid shape when viewed macroscopically. The embossed thin plate material according to any one of claims 1 to 5, wherein the convex portion and the concave portion are formed on a part of a metal thin plate material. A vehicular seat slide rail in which the embossed thin plate material according to any one of claims 1 to 6 is used for an upper rail of a vehicular seat slide rail, and the direction of the convex portion and the concave portion is directed vertically.

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