JP2018167817A - Support structure for vehicle seat - Google Patents

Abstract

To provide a support structure for a vehicle seat, in which support rigidity can be improved by a riser member of simple configuration.SOLUTION: A riser member 40 has a support member 44 supporting a seat S whose front part and rear part are supported by a front leg member 46 and a rear leg member 48. The support member 44 has: an upper wall 56 abutting on a lower surface of the seat S; a pair of standing walls 58 suspending from both side edges of the upper wall 56; and an outer flange 59 extending from a lower edge of at least one of the pair of standing walls 58 toward outside of a cross-section of the support member 44. The seat S is highly rigidly supported since the lower surface is supported by the upper wall 56. The support member 44 remarkably improves its rigidity by having the upper wall 56 and the outer flange 59.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a support structure for a vehicle seat mounted on a vehicle or the like.

  The vehicle seat includes left and right slide rails extending in the front-rear direction below the pair of seating side frames, and risers disposed below the slide rails. A front leg joined to the side, a rear leg joined to the rear end side of the slide rail, and a first connecting member for connecting the front leg and the rear leg, between the left and right risers There is known one in which a second connecting member for connecting them is installed (for example, Patent Document 1). In this vehicle seat, the first connecting member and the second connecting member are provided, whereby the rigidity of the riser is improved. Further, in order to further improve the rigidity of the riser member, the first connecting member is formed by two side plates opposed to each other, and each side plate sandwiches the position where the second connecting member is provided. A bead extending in a substantially linear shape in the front-rear direction is provided.

JP 2012-76546 A

  The slide rail needs to be formed with high rigidity so as not to be deformed even when a large load is applied due to a collision or the like. For this purpose, it is necessary to configure the slide rail with an expensive high-rigidity steel material or with a thick-walled steel material. However, this causes the material cost to increase and the weight to increase.

  In the vehicle seat of Patent Document 1, the rigidity of the riser is improved by the side plate, but since the slide rail is supported by the front leg portion and the rear leg portion, the side plate contributes to the rigidity improvement of the slide rail. Absent. Further, the side plate is mainly enhanced in lateral rigidity (rigidity with respect to a load in the lateral direction) by the bead, and is not enhanced in vertical rigidity (rigidity with respect to a load in the vertical direction). Therefore, further improvement in rigidity of the riser has been demanded. Further, the effect of improving the lateral rigidity of the side plate by the bead is small.

  In view of such a background, an object of the present invention is to provide a vehicle seat support structure capable of improving support rigidity by a riser member having a simple configuration.

  In order to solve such a problem, an aspect of the vehicle seat support structure according to the present invention includes a riser member (40) that arranges the vehicle seat (S) at a position higher than the vehicle floor (F). The riser member extends in the front-rear direction and supports the seat, and the front leg member (46) and the rear leg member (46) support the front and rear portions of the support member. 48), and the support member includes an upper wall (56) that comes into contact with the lower surface of the seat, a pair of standing walls (58) depending from both side edges of the upper wall, and a pair of the standing walls. And an outer flange (59) extending from at least one lower edge toward the outside of the cross section of the support member.

  According to this configuration, since the lower surface of the sheet is supported by the upper wall of the support member, the support rigidity of the sheet is improved. Further, since the support member has an upper wall provided at the upper end of the pair of standing walls and an outer flange provided at the lower edge of at least one of the standing walls, the rigidity of the support member in the lateral direction and the vertical direction is greatly increased. To improve. Furthermore, since the outer flange extends toward the outer side of the cross section of the support member having the groove-shaped cross section, forming is easy when the support member is made of a steel plate.

  Moreover, the said structure WHEREIN: The said outer flange (59) is provided in both of a pair of said standing walls (58), and it is good for the said supporting member (44) to have a hat-shaped cross section.

  According to this configuration, the rigidity of the support member is further increased. Further, since the pair of outer flanges extend toward the outside of the cross section of the support member, it is easy to take out the support member from the mold when the support member is molded using the mold.

  In the configuration in which the support member (44) has a hat-shaped cross section, the pair of outer flanges (59) may be provided at the same height, and the support member may have a symmetrical cross-sectional shape.

  According to this configuration, the sheet is supported with uniform rigidity in the width direction, and the support rigidity of the sheet is improved.

  In the above configuration, the outer flange (59) has a length in the front-rear direction that is shorter than the length in the front-rear direction of the standing wall (58), and is disposed at a middle portion of the corresponding standing wall in the front-rear direction. A notch (58A) may be formed in front and rear of the outer flange (59) at the lower edge.

  According to this configuration, the stress concentrated on the front end and the rear end of the outer flange in the standing wall is dispersed by the notch, and the deformation of the support member due to the stress concentration is suppressed.

  Further, in the above configuration, the rear leg member (48) is received at the upper part inside the pair of standing walls such that both side surfaces are in contact with or close to both inner surfaces of the pair of standing walls (58), It is good to arrange | position in the position which overlaps with the said outer flange (59) in the front-back direction.

  According to this configuration, the rear leg member can be attached to the position where the rigidity of the support member is high with high attachment strength. Thereby, the support rigidity of the seat with respect to the floor is improved.

  In the above-described configuration, the rear leg member (48) extends in the front-rear direction and is fixed to the upper wall (56) of the support member (44). And a lower fixing portion (48B) having a groove-shaped cross-sectional shape that extends obliquely downward and rearward from the front end of the upper fixing portion and is fixed to the floor (F), the upper fixing portion and the lower side The fixing portion may be disposed at a position overlapping the outer flange (59) in the front-rear direction.

  According to this structure, the rigidity with respect to the load of the vertical direction of a support member improves.

  Further, in the configuration in which the rear leg member (48) includes an upper fixing part (48C) and a lower fixing part (48B), the rear leg member has a rear end of the upper fixing part of the standing wall (58). It is good to arrange | position in the position aligned with a rear end.

  According to this configuration, it is easy to align the rear leg member when the rear leg member is attached to the support member.

  The support member (44) is attached with a cover bracket (72) for fixing a rear cover member (70) that covers the rear portion of the support member from the rear, and below the cover bracket, A space (H) into which a tool for attaching the rear leg member (48) to the floor can be inserted may be formed.

  According to this configuration, the rear cover member can be fixed to the support member without affecting the attachment of the rear leg member to the floor by the tool.

  The seat (S) includes a slide rail (14) that contacts the upper wall (56), and the slide rail (14) is attached to the upper wall (56). And an upper rail (22) slidably engaged with the lower rail within a predetermined sliding range, and a front portion of the upper rail and a front portion of the seat (S) are connected by a front link (28), The rear portion of the upper rail and the rear portion of the seat are connected by a rear link (30), and when the upper rail is located at the end of the slide range, a connection point (22A) of the upper rail with the front link is the outer flange. (59) is overlapped in the front-rear direction, and the upper rail is connected to the rear link when the upper rail is located at the forefront of the slide range. (22B) may overlaps in the longitudinal direction of the outer flange.

  According to this configuration, even when the seat is positioned at the forefront or the rearmost portion of the slide range, at least one link can be stably supported by the portion of the support member whose rigidity has been improved by the outer flange. it can.

  As described above, according to the present invention, there is provided a vehicle seat support structure in which the lower surface of the seat is supported by the upper wall of the support member, so that the support rigidity of the seat can be improved by the riser member having a simple configuration. Can do. Further, since the support member has an upper wall provided at the upper end of the pair of standing walls and an outer flange provided at the lower edge of at least one of the standing walls, the rigidity of the support member in the lateral direction and the vertical direction is greatly increased. To improve. Furthermore, since the outer flange extends toward the outer side of the cross section of the support member having the groove-shaped cross section, forming is easy when the support member is made of a steel plate.

  In addition, according to the present invention, the support member has a hat-shaped cross section, whereby the rigidity of the support member is further increased. Further, since the pair of outer flanges extend toward the outside of the cross section of the support member, it is easy to take out the support member from the mold when the support member is molded using the mold.

  Further, according to the present invention, since the support member has a symmetrical cross-sectional shape, the sheet is supported with uniform rigidity in the width direction, and the support rigidity of the sheet is improved.

  Further, according to the present invention, the notches are formed in front and rear of the outer flange at the lower edge of the standing wall, so that the stress concentrated on the front end and the rear end of the outer flange on the standing wall is dispersed by the notch, and the stress concentration Deformation of the support member is suppressed.

  Further, according to the present invention, the rear leg member is received at the upper part inside the pair of standing walls, and is arranged at a position overlapping the outer flange in the front-rear direction, whereby the rear leg member has a high rigidity of the support member. It can be attached to the position with high attachment strength. Thereby, the support rigidity of the seat with respect to the floor is improved.

  Moreover, according to this invention, the rigidity with respect to the load of the vertical direction of a support member improves by arrange | positioning the upper side fixing | fixed part and the lower side fixing | fixed part in the position which overlaps with an outer flange in the front-back direction.

  Further, according to the present invention, the rear leg member is disposed at a position where the rear end of the upper fixing portion is aligned with the rear end of the standing wall, so that the position of the rear leg member when the rear leg member is attached to the support member Matching is easy.

  Further, according to the present invention, since the space into which the tool can be inserted is formed below the cover bracket, the rear cover member can be supported by the support member without affecting the attachment of the rear leg member to the floor by the tool. Can be fixed to.

  Further, according to the present invention, when the upper rail is located at the rearmost position, the connection point with the front link of the upper rail overlaps with the outer flange in the front-rear direction, and when the upper rail is located at the forefront, the connection point with the rear link of the upper rail When the seat overlaps with the outer flange in the front-rear direction, at least one of the links is stably supported by the portion of the support member that has increased rigidity by the outer flange, regardless of whether the seat is positioned at the forefront or the rearmost position. be able to.

The perspective view which looked at the frame of the seat concerning a 1st embodiment from the left front. Left side view of the seat frame at the end of the slide range Left side view of the seat frame at the forefront of the slide range A perspective view of the left riser member viewed from diagonally below the left rear VV sectional view in FIG. VI-VI cross section in FIG. The perspective view which looked at the frame of the seat concerning a 2nd embodiment from the left front. Left side view of the seat frame at the end of the slide range Left side view of the seat frame at the forefront of the slide range A perspective view of the left riser member viewed from diagonally below the left rear XI-XI sectional view in FIG. XII-XII sectional view in FIG.

  Hereinafter, an embodiment in which the present invention is applied to a vehicle seat S mounted in an automobile will be described with reference to the drawings. In the following description, the left and right are determined based on the occupant seated on the seat S. About the same structure provided in 1 pair on either side, a common number is attached | subjected and description is abbreviate | omitted.

<< First Embodiment >>
First, a first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of a frame of a seat S according to the embodiment as viewed from the left front. As shown in FIG. 1, the seat S includes a seat cushion S1 that forms a seating surface, and a seat back that is tiltably connected to the seat cushion S1 about a support shaft 12 by a reclining mechanism 10 to form a backrest surface. S2 is attached to the automobile floor F by a slide rail 14 so as to be slidable in the front-rear direction.

  The seat cushion S1 includes a steel seat cushion frame 16 and is configured by covering the seat cushion frame 16 with a pad and a skin (not shown). The seat back S2 has a steel seat back frame 18 and is configured by covering the seat back frame 18 with a pad and a skin (not shown). The pad is formed of a cushioning material having elasticity such as polyurethane foam, and the epidermis is formed of genuine leather, synthetic leather, fabric or the like.

  The slide rail 14 has a lower rail 20 having a groove-shaped cross-sectional shape with an upper opening, and an upper rail 22 engaged with the lower rail 20 so as to be movable in the extending direction of the lower rail 20. Each extending in the front-rear direction.

  The seat cushion frame 16 includes a pair of left and right side members 24 and a front member 26 that connects the front ends of the left and right side members 24 to each other. The side members 24 are connected to the front links 28 (see also FIG. 2) and the rear. A lift mechanism 32 including a parallel link mechanism including the side link 30 is connected to the corresponding upper rail 22 so as to be vertically displaceable. Thereby, the seat cushion S1 can adjust the front-rear position and the seat surface height. The lift mechanism 32 is provided with a mechanism for selectively fixing the seat cushion S1 to the upper rail 22 at an arbitrary seating surface height. This mechanism has a well-known structure. Omitted.

  Between the left and right lower rails 20 and the upper rails 22, lock mechanisms are provided for selectively fixing the upper rails 22 to the corresponding lower rails 20 at arbitrary sliding positions (front and rear positions). The left and right lock mechanisms are connected to each other by a lock release operation member 36. The unlocking operation member 36 is a bent product of a pipe material, and extends forward from the left and right ends of the front portion 36A, and a front portion 36A that horizontally extends in front of the seat cushion frame 16 in the left-right direction. And a side portion 36 </ b> B that enters the slide rail 14.

  Each lower rail 20 is provided with a front / rear stopper for restricting the front / rear movement of the corresponding upper rail 22, and the sliding range of the upper rail 22 is defined by a predetermined range by both stoppers.

  2 is a side view of the frame of the seat S at the end of the slide range as viewed from the left, and FIG. 3 is a side view of the frame of the sheet S at the forefront of the slide range as viewed from the left. is there. As shown in FIG. 2, when the seat S is at the end of the sliding range, the rear portion of the upper rail 22 extends rearward from the rear end of the lower rail 20, and the connection point with the rear link 30 of the upper rail 22 is It is located behind the rear end of the lower rail 20. As shown in FIG. 3, when the seat S is in front of the sliding range, the front portion of the upper rail 22 extends forward from the front end of the lower rail 20, and the connection point of the upper rail 22 with the front link 28 is the lower rail 20. It is located in front of the front end.

  Next, details of a support structure for the seat S, that is, a structure for attaching the slide rail 14 to the floor F will be described.

  The left and right slide rails 14 are arranged at the same height higher than the floor F by the left and right riser members 40 and 42. The floor F has a shape that bulges upward with respect to the portion to which the right side (vehicle body outside) riser member 40 is attached in the portion to which the left side (vehicle body inside) riser member 40 is attached. Therefore, the height dimension of the left riser member 40 is smaller than the height dimension of the right riser member 40.

  The left riser member 40 extends in the front-rear direction, and includes a support member 44 that supports the left slide rail 14, and a front leg member 46 and a rear leg member 48 that support the front and rear portions of the support member 44. ing. The right riser member 42 extends in the front-rear direction, and includes a support member 50 that supports the right slide rail 14, and a front leg member 52 and a rear leg member 54 that support the front and rear portions of the support member 50. ing. The left and right support members 44 and 50 are linear press-formed products formed of a steel plate having a relatively deep substantially groove-shaped cross section, and extend in the front-rear direction with an inclination so that the rear part is lower than the front part. doing. The left and right front leg members 46 and 52 and the left and right rear leg members 48 and 54 are press-formed products having bent shapes formed so as to bend the steel plate in a relatively shallow substantially groove-shaped cross-sectional shape in the longitudinal direction.

  Next, of the mounting structure of the slide rail 14, the mounting structure of the left slide rail 14 located inside the vehicle body will be described.

  FIG. 4 is a perspective view of the left riser member 40 as viewed from diagonally below the left rear, and FIG. 5 is a cross-sectional view of the left riser member 40 taken along the line VV in FIG. As shown in FIGS. 4 and 5, the support member 44 includes an upper wall 56 that contacts the lower surface of the lower rail 20 and supports the lower rail 20, and left and right standing walls 58 that are suspended from the left and right edges of the upper wall 56. And left and right outer flanges 59 extending from the lower edge of each standing wall 58 toward the outside of the support member 44. The left outer flange 59 extends toward the outside of the seat (that is, the left side that is the inside of the vehicle body), and the right outer flange 59 faces toward the inside of the seat (that is, the right side that is the outside of the vehicle body). Is extended.

  The upper wall 56 extends horizontally in the width direction (left-right direction). The left and right standing walls 58 are bent substantially 90 degrees downward with respect to the upper wall 56 and have a symmetrical shape. Therefore, the left and right standing walls 58 extend in a substantially vertical direction, and the left and right outer flanges 59 are arranged at the same height. The left and right outer flanges 59 are bent approximately 90 degrees laterally with respect to the corresponding standing wall 58, and have a symmetrical shape. Accordingly, the left and right outer flanges 59 extend substantially horizontally, and the riser member 40 has a symmetrical hat-shaped cross section.

  The standing wall 58 generally has a tapered shape with a height dimension that increases toward the front side, and the height dimension gradually increases at the rear part. The lower edge of the standing wall 58 extends in the front-rear direction substantially horizontally at the front part, and is lowered stepwise toward the rear at the rear part. The outer flange 59 has a length in the front-rear direction that is shorter than the length in the front-rear direction of the standing wall 58, and is formed at a position straddling two stepped portions in the middle portion on the rear side of the standing wall 58. Further, since the outer flange 59 is formed by being bent at the lower edge of the standing wall 58, the outer flange 59 has a stepped portion 59A that descends stepwise toward the rear at the rear portion.

  There are portions where the outer flange 59 is not formed at the front end and the rear end at the lower edge of the standing wall 58, and both portions where the outer flange 59 is not formed are outer flanges adjacent to the outer flange 59. A cutout 58A is formed at the end on the 59 side. That is, the outer flange 59 is formed by bending a tongue piece portion formed between two notches 58A formed in the vicinity of the front end and the rear end of the standing wall 58.

  Specifically, the longitudinal length and the longitudinal position of the outer flange 59 are set as follows. That is, as shown in FIG. 2, when the seat S (that is, the upper rail 22) is located at the end of the slide range, the front connection point 22 </ b> A that is a connection point with the front link 28 of the upper rail 22 is formed on the outer flange 59. As shown in FIG. 3, when the upper rail 22 is positioned at the forefront of the slide range, the rear connection point 22 </ b> B, which is a connection point with the rear link 30 of the upper rail 22, moves forward and backward with respect to the outer flange 59. The front-rear direction length and the front-rear direction position of the outer flange 59 are set so as to overlap in the direction.

  As shown in FIGS. 2 and 3, the front leg member 46 has a column part 46 </ b> A that extends in the up and down direction with the upper part inclined in a direction to tilt backward, and has a groove-shaped cross section of the rear opening. At the lower end of the column portion 46A, a lower fixing portion 46B that extends obliquely downward and forward and is fixed to the floor F by a bolt B is integrally provided. The lower fixing portion 46B has a bead shape in which the left and right side wall portions of the groove are crushed and protrude upward so that the bottom wall portion of the groove contacts the floor F. The upper end of the column part 46A has a groove-shaped cross section with a downward opening that extends rearward and overlaps with the front end part of the support member 44 and is fixed to the upper wall 56 and the bottom wall of the lower rail 20 by a fixing member 80. The upper fixing portion 46C is provided integrally. In the front leg member 46, the bottom wall portion of the upper fixing portion 46C abuts on the upper wall 56 of the support member 44, and the left and right side wall portions of the upper fixing portion 46C and the column portion 46A abut on the left and right standing walls 58 of the support member 44. Alternatively, the upper portions are received inside the pair of standing walls 58 so as to be close to each other, and are welded to the left and right standing walls 58 in place.

  FIG. 6 is a vertical cross-sectional view of the left riser member 40 taken along the line VI-VI in FIG. As shown in FIGS. 4 and 6, the rear leg member 48 has a groove-shaped cross section of a rear opening that is inclined in a direction in which the upper part falls forward and extends in the vertical direction and is fixed to the floor F by the bolt B. It has a lower fixing part 48B. At the upper end of the lower fixing portion 48B, two fixing members 80 that extend rearward and extend in the front-rear direction so as to overlap the rear end portion of the support member 44 and are offset in the front-rear direction are provided. An upper fixing portion 48C fixed to the upper wall 56 and the bottom wall of the lower rail 20 and having a groove-shaped cross section with a lower opening is integrally provided via a connecting portion 48D that is curved. That is, the rear leg member 48 does not have a shape that is bent at two upper and lower ends of the column portion 46A like the front leg member 46, but extends rearward and obliquely downward from the front end of the upper fixing portion 48C via the connecting portion 48D. The lower fixing portion 48B also serves as a column portion, and has a substantially L shape that is convex at an acute angle upward and forward. In the rear leg member 48, the groove bottom wall 62 of the upper fixing portion 48 </ b> C abuts the upper wall 56 of the support member 44, and the left and right groove sidewalls 64 of the upper fixing portion 48 </ b> C and the lower fixing portion 48 </ b> B The upper portions are received inside the pair of standing walls 58 so as to abut against or be close to the standing walls 58, and are welded to the left and right standing walls 58 at the rear end portion of the upper fixing portion 48C and the connecting portion 48D.

  The rear leg member 48 is disposed so that the rear end of the upper fixing portion 48C is aligned with the rear ends of the left and right standing walls 58, and the lower fixing portion 48B overlaps the outer flange 59 in the front-rear direction. As shown in FIG. 6, the rear leg member 48 is disposed at a position where both the upper fixing portion 48 </ b> C and the lower fixing portion 48 </ b> B overlap the outer flange 59 in the front-rear direction. The outer flange 59 fixes the lower rail 20 to the upper wall 56 of the support member 44 in order to prevent stress from concentrating on the notch 58 </ b> A when the support member 44 is pulled upward by the sheet S via the fixing member 80. The rear cutout 58A adjacent to the rear end of the outer flange 59 extends from the central axis 80A of the front fixing member 80 and extends rearward from the central axis 80A of the front fixing member 80. Is also formed rearward.

  As shown in FIG. 4, at the front end portion of the standing wall 58 where the outer flange 59 is not formed, the front connecting member 66 made of pipe steel connecting the left and right support members 44, 50 is connected to the left and right standing walls 58. It is provided so as to penetrate, and is fixed to the left and right standing walls 58 by welding. As shown in FIG. 2 to FIG. 4, the pipe steel material that connects the left and right support members 44, 50 to the first step in the rear part of the portion of the standing wall 58 where the outer flange 59 is formed. A rear connecting member 68 (see FIGS. 2 and 3) is provided so as to penetrate the standing wall 58 inside the seat and is fixed to the standing wall 58 by welding. The left and right riser members 40 and 42 are rectangular by connecting the front and rear portions thereof by the front connecting member 66 and the rear connecting member 68, thereby increasing the rigidity against the lateral load. .

  As shown in FIGS. 4 and 6, a cover bracket 72 for attaching the rear cover member 70 is fixed to the rear end portion of the standing wall 58 where the outer flange 59 is not formed by welding. The cover bracket 72 is a press-formed product in which a steel plate is formed in a substantially groove-shaped cross-sectional shape, and is joined to the inner surface side of the left and right standing walls 58 with the main surface facing left and right, and downward from the lower edges of the left and right standing walls 58. The left and right L-shaped portions 72A extending rearward after connecting to the left and the rear ends of the left and right L-shaped portions 72A are connected, and a connecting plate portion 72B having the main surface facing in the front-rear direction is provided. A long hole 74 that is long in the left-right direction is formed in the connecting plate portion 72B, and a clip (not shown) provided in the rear cover member 70 is inserted into the long hole 74, whereby the rear cover member 70 is attached to the cover bracket. 72 is attached. The rear cover member 70 attached to the cover bracket 72 covers the rear portion of the riser member 40 from the rear and the side, and covers the lower rail 20 from the side.

  The connecting plate portion 72 </ b> B of the cover bracket 72 is located below and behind the lower edges of the left and right standing walls 58, and forms a gap G between the upper wall 56. The connecting plate portion 72B of the cover bracket 72 also forms a space H below, and grips the bolt B when the lower fixing portion 48B of the rear leg member 48 is fixed to the floor F with the bolt B. The tool to be inserted can be inserted from the gap G or the space H. The gap G is formed on the axis of the bolt B that fixes the lower fixing portion 48B to the floor F, and the fastening operation on the axis of the bolt B is possible.

  Next, the effect of the support structure for the sheet S configured as described above will be described.

  4 and 5, the lower surface of the slide rail 14 of the seat S is supported by the upper wall 56 of the support member 44, so that the load acting on the slide rail 14 is directly transmitted to the upper wall 56. The Thereby, the support rigidity of the slide rail 14 of the sheet | seat S improves. Further, since the support member 44 has an upper wall 56 provided at the upper end of the pair of standing walls 58 and an outer flange 59 provided at the lower edge of the standing wall 58, the rigidity of the support member 44 is lateral and vertical. The direction has been greatly improved. Further, since the outer flange 59 extends toward the outer side of the cross section of the support member 44 having a groove-shaped cross section, the support member 44 made of a steel plate can be easily formed.

  In this embodiment, since the support member 44 has a hat-shaped cross section, the rigidity of the support member 44 is further increased. In addition, since both of the pair of outer flanges 59 extend toward the outside of the cross section of the support member 44, the support member 44 can be easily removed from the mold when the support member 44 is molded using the mold. it can.

  Furthermore, since the support member 44 has a symmetrical cross-sectional shape, the slide rail 14 of the seat S is supported with uniform rigidity in the width direction, and the support rigidity of the seat S is improved. Further, the torsional deformation of the slide rail 14 is suppressed.

  As shown in FIG. 4, in this embodiment, the notches 58 </ b> A are formed in front and rear of the outer flange 59 adjacent to the outer flange 59 at the lower edge of the standing wall 58. The stress concentrated on the front end and the rear end is dispersed by the notch 58A, and the deformation of the support member 44 due to the stress concentration is suppressed.

  Further, the rear leg member 48 is received at the upper part inside the pair of standing walls 58 so that both side surfaces are in contact with or close to both inner surfaces of the pair of standing walls 58, and overlaps the outer flange 59 in the front-rear direction. Since it is arrange | positioned, it attaches to the position with the high rigidity of the support member 44 with high attachment strength. Thereby, the support rigidity of the sheet S with respect to the floor F is improved.

  As shown in FIG. 6, the rear leg member 48 is disposed at a position where the upper fixing portion 48 </ b> C and the lower fixing portion 48 </ b> B overlap the outer flange 59 in the front-rear direction. The rigidity against is improved.

  As shown in FIG. 4, the rear leg member 48 is disposed at a position where the rear end of the upper fixing portion 48 </ b> C is aligned with the rear end of the standing wall 58. Therefore, the position can be easily adjusted by aligning the rear end of the upper fixing portion 48 </ b> C with the rear end of the standing wall 58 during attachment to the support member 44.

  In the present embodiment, since the space H into which the tool for attaching the rear leg member 48 to the floor F can be inserted is formed below the cover bracket 72, the rear leg member 48 can be attached to the floor F by the tool. The rear cover member 70 can be fixed to the support member 44 without affecting.

  As shown in FIG. 2, when the upper rail 22 of the slide rail 14 is located at the end of the slide range, the front connection point 22 </ b> A with the front link 28 of the upper rail 22 overlaps the outer flange 59 in the front-rear direction. On the other hand, as shown in FIG. 3, when the upper rail 22 of the slide rail 14 is positioned at the forefront of the slide range, the rear link 30 and the rear connection point 22B of the upper rail 22 overlap the outer flange 59 in the front-rear direction. . Therefore, in the case where the seat S is positioned at the forefront or the rearmost position of the slide range, at least one of the front link 28 and the rear link 30 is a portion whose rigidity is improved by the outer flange 59 in the support member 44. Stable support.

<< Second Embodiment >>
Next, a second embodiment will be described with reference to FIGS. In the present embodiment, an inner flange 60 is provided on the support member 44 instead of the outer flange 59. A duplicate description with the first embodiment is omitted.

  FIG. 10 is a perspective view of the left riser member 40 as viewed from diagonally below the left rear, and FIG. 11 is a cross-sectional view of the left riser member 40 shown along line XI-XI in FIG. As shown in FIGS. 10 and 11, the support member 44 includes an upper wall 56 that contacts the lower surface of the lower rail 20 and supports the lower rail 20, and left and right standing walls 58 that are suspended from the left and right edges of the upper wall 56. And left and right inner flanges 60 extending from the lower edge of each standing wall 58 toward the inside of the support member 44. The left inner flange 60 extends toward the inside of the seat (that is, the right side that is outside the vehicle body), and the right inner flange 60 faces toward the outside of the seat (that is, the left side that is inside the vehicle body). Is extended.

  The left and right inner flanges 60 are arranged at the same height. The left and right inner flanges 60 are bent approximately 90 degrees inward with respect to the corresponding standing wall 58 and have a symmetrical shape. Accordingly, the left and right inner flanges 60 extend substantially horizontally, and the riser member 40 has a symmetrical lip groove shape (C-shaped channel shape) cross section.

  The lower edge of the standing wall 58 extends substantially horizontally in the front-rear direction at the front portion, and is lowered toward the rear at two stepped steps in the rear portion. The inner flange 60 has a length in the front-rear direction that is shorter than the length in the front-rear direction of the standing wall 58, and is formed at a position straddling the two staircases in the intermediate portion on the rear side of the standing wall 58. Further, since the inner flange 60 is formed by being bent at the lower edge of the standing wall 58, the inner flange 60 has a staircase-shaped portion 60A that descends stepwise toward the rear at the front staircase portion at the rear, Divided back and forth at the staircase.

  There are portions where the inner flange 60 is not formed at the front end portion and the rear end portion of the lower edge of the standing wall 58, and both portions where the inner flange 60 is not formed are inner flanges adjacent to the inner flange 60. A cutout 58A is formed at the end on the 60 side. That is, the inner flange 60 is formed by bending a tongue piece portion formed between two notches 58 </ b> A formed in the vicinity of the front end and the rear end of the standing wall 58.

  Specifically, the front-rear direction length and the front-rear direction position of the inner flange 60 are set as follows. That is, as shown in FIG. 8, when the seat S (that is, the upper rail 22) is located at the end of the slide range, the front connection point 22 </ b> A that is a connection point with the front link 28 of the upper rail 22 is formed on the inner flange 60. As shown in FIG. 9, when the upper rail 22 is positioned at the forefront of the slide range, the rear connection point 22 </ b> B, which is a connection point with the rear link 30 of the upper rail 22, moves forward and backward with respect to the inner flange 60. The length in the front-rear direction and the position in the front-rear direction of the inner flange 60 are set so as to overlap in the direction.

  FIG. 12 is a longitudinal sectional view of the left riser member 40 taken along line XII-XII in FIG. As shown in FIGS. 10 and 12, the lower fixing portion 48 </ b> B is disposed at a portion where the inner flange 60 is divided. In other words, the inner flange 60 is divided forward and backward at the portion where the lower fixing portion 48B is provided.

  The rear leg member 48 is disposed such that the rear end of the upper fixing portion 48C is aligned with the rear ends of the left and right standing walls 58, and the lower fixing portion 48B intersects or penetrates the inner flange 60. As shown in FIG. 12, the rear leg member 48 is disposed at a position where both the upper fixing portion 48C and the lower fixing portion 48B overlap the inner flange 60 in the front-rear direction. The rear portion of the inner flange 60 divided forward and backward supports the lower rail 20 to prevent stress from concentrating on the notch 58A when the support member 44 is pulled upward by the sheet S via the fixing member 80. Of the two fixing members 80 fixed to the upper wall 56 of the member 44, the rear notch 58 </ b> A that extends rearward from the central axis 80 </ b> A of the front fixing member 80 and is adjacent to the rear end of the inner flange 60 is The fixing member 80 is formed behind the central axis 80A.

  Next, the effect of the support structure for the sheet S configured as described above will be described.

  As shown in FIGS. 10 and 11, the support member 44 has an upper wall 56 provided at the upper end of the pair of standing walls 58 and an inner flange 60 provided at the lower edge of the standing wall 58. The rigidity of the member 44 is greatly improved in the lateral direction and the vertical direction. Further, the rear leg member 48 is received at the upper part inside the pair of standing walls 58 so that both side surfaces abut or are close to both inner surfaces of the pair of standing walls 58, and as shown in FIG. The rear leg member 48 is attached to a position where the rigidity of the support member 44 is high with high attachment strength. Thereby, the support rigidity of the sheet S with respect to the floor F is improved.

  As shown in FIG. 12, the rear leg member 48 is disposed at a position where the upper fixing portion 48C and the lower fixing portion 48B overlap the inner flange 60 in the front-rear direction. The rigidity against is improved.

  Further, since the inner flange 60 is divided forward and backward at the portion where the lower fixing portion 48B is provided, the lower fixing portion 48B is not narrowed at the portion intersecting the inner flange 60 while the inner flange 60 is provided. The rear leg member 48 can be attached to the support member 44 with high attachment strength.

  As shown in FIGS. 7 to 10, the inner flange 60 has a stepped shape portion 60 </ b> A that increases the height of the standing wall 58 toward the rear, so that the inner flange 60 has an inner flange. Stress concentration on the portion divided around 60 is suppressed.

  As shown in FIG. 12, the rear leg member 48 is welded to both inner surfaces of the standing wall 58 at the connecting portion 48D that connects the upper fixing portion 48C and the lower fixing portion 48B. The standing wall 58 is reinforced by the rear leg member 48 in the vicinity of the divided portion.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, in the above embodiment, the support structure of the vehicle seat S has been described as an example, but the present invention can be widely applied to other vehicle seats such as ships and aircrafts. Further, in the above embodiment, a pair of symmetrical outer flange 59 or inner flange 60 is provided on both of the pair of standing walls 58, but the outer flange 59 or inner flange 60 may be provided only on one side. In addition, the pair of outer flanges 59 or inner flanges 60 may not be symmetrical. Further, the rear leg member 48 may have a column portion in addition to the lower fixing portion 48B and the upper fixing portion 48C. In addition, the specific configuration, arrangement, quantity, angle, material, and the like of each member and part can be changed as long as they do not depart from the spirit of the present invention. On the other hand, not all the constituent elements shown in the above embodiment are necessarily essential, and can be appropriately selected.

14 Slide rail 20 Lower rail 22 Upper rail 22A Front side connection point 22B Rear side connection point 28 Front side link 30 Rear side link 40 Riser member (left side)
42 Riser member (right side)
44 support member 46 front leg member 48 rear leg member 48B lower side fixing part 48C upper side fixing part 56 upper wall 58 standing wall 58A notch 59 outer flange 60 inner flange 70 cover member 72 cover bracket 80 fixing member 80A central axis F of fixing member 80 Floor H space S seat (vehicle seat)

Claims (9)

A riser member for placing the vehicle seat at a position higher than the vehicle floor;
The riser member extends in the front-rear direction, and includes a support member that supports the seat, and a front leg member and a rear leg member that support a front portion and a rear portion of the support member,
The support member includes an upper wall contacting the lower surface of the seat, a pair of standing walls depending from both side edges of the upper wall, and a lower edge of at least one of the pair of standing walls to the outside of the cross section of the support member. A vehicle seat support structure comprising an outer flange extending toward the vehicle.   2. The vehicle seat support structure according to claim 1, wherein the outer flange is provided on both of the pair of standing walls, and the support member has a hat-shaped cross section.   The vehicle seat support structure according to claim 2, wherein the pair of outer flanges are provided at the same height, and the support member has a symmetrical cross-sectional shape. The outer flange has a length in the front-rear direction that is shorter than the length in the front-rear direction of the standing wall, and is disposed at a middle portion of the corresponding standing wall in the front-rear direction;
The vehicle seat support structure according to any one of claims 1 to 3, wherein notches are formed in front and rear of the outer flange at a lower edge of the standing wall.   The rear leg member is disposed at a position where the upper part is received inside the pair of standing walls so that both side surfaces are in contact with or close to both inner surfaces of the pair of standing walls and overlaps the outer flange in the front-rear direction. The vehicle seat support structure according to any one of claims 1 to 4, wherein the vehicle seat support structure is provided.   The rear leg member extends in the front-rear direction, and is fixed to the upper wall of the support member. The upper fixing portion has a groove-shaped cross-sectional shape, and extends obliquely rearward and downward from the front end of the upper fixing portion. And a lower fixing portion having a groove-shaped cross-sectional shape fixed to the outer flange, and the upper fixing portion and the lower fixing portion are arranged at positions overlapping the outer flange in the front-rear direction. The support structure for a vehicle seat according to any one of claims 1 to 5.   The said rear leg member is arrange | positioned in the position where the rear end of the said upper side fixing part aligns with the rear end of the said standing wall, The support structure of the vehicle seat of Claim 6 characterized by the above-mentioned. A cover bracket for fixing a rear cover member that covers the rear portion of the support member from behind is attached to the support member,
The vehicle according to any one of claims 1 to 7, wherein a space for inserting a tool for attaching the rear leg member to the floor is formed below the cover bracket. Sheet support structure. The seat includes a slide rail that comes into contact with the upper wall, and the slide rail includes a lower rail attached to the upper wall and an upper rail that engages the lower rail so that a predetermined slide range is slidable. And
The front part of the upper rail and the front part of the seat are connected by a front link, the rear part of the upper rail and the rear part of the seat are connected by a rear link,
When the upper rail is located at the end of the slide range, the connection point of the upper rail with the front link overlaps the outer flange in the front-rear direction, and when the upper rail is located at the forefront of the slide range, the rear side of the upper rail 9. The vehicle seat support structure according to claim 1, wherein a connection point with the link overlaps the outer flange in the front-rear direction.

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