Seat mounting structure

Abstract

To provide a seat fitting structure which can enhance rigidity and strength of a stationary member which fixes a rail member to a vehicle body floor or a seat while restraining increase in weight.SOLUTION: A seat fitting structure 70 which mounts a seat to a vehicle body floor in a movable manner comprises: a stationary member 100 which is mounted to the seat; a first rail member 11 which is mounted to the stationary member; and a second rail member 12 which is fixed on the vehicle body floor and guides the first rail member in a movable manner. The stationary member includes: a first vertical wall part 101 which extends along a vehicle longitudinal direction and a vehicle vertical direction; and a second vertical wall part 102 which is connected to the first vertical wall part and extends along a vehicle cross direction and the vehicle vertical direction. The first vertical wall part and / or the second vertical wall part are joined to the seat.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] The present invention relates to a seat mounting structure.

[0002] As a seat mounting structure for movably mounting a seat to a vehicle floor, for example, Patent Document 1 discloses the use of a lower rail unit fixed to the vehicle floor via a bracket. This bracket is made of an aluminum extrusion molded product that is extruded so as to have an L-shaped cross section and extend in the left-right direction of the vehicle, and strength is intended to be ensured by forming ribs on the inside corners of the bent part that is bent at a predetermined angle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 5-49464 Summary of the Invention [Problem to be solved by the invention]

[0004] In the bracket of Patent Document 1, stress tends to concentrate at the bend due to loads in the front-to-back and up-to-down directions. If the ribs at the inner corners are enlarged to further increase the rigidity and strength of this bracket, the mounting parts on both sides of the bend must be redesigned to move away from the ribs by the amount of the enlarged ribs. This results in an increase in the size of the entire bracket, and an excessive increase in the weight of the bracket.

[0005] An object of the present invention is to provide a seat mounting structure that can efficiently increase the rigidity and strength of a fixing member that fixes a rail member to a vehicle body floor or a seat. [Means for solving the problem]

[0006] One aspect of the present invention is A seat mounting structure that movably guides a seat relative to a vehicle body floor, a fixing member attached to the sheet; a first rail member attached to the fixed member; a second rail member fixed to the vehicle body floor and movably guiding the first rail member; It is equipped with The fixing member is a first vertical wall portion extending along the left-right direction of the vehicle and the up-down direction of the vehicle; a second vertical wall portion connected to the first vertical wall portion and extending along the vehicle front-rear direction and the vehicle up-down direction; It has The first vertical wall portion and / or the second vertical wall portion are joined to the sheet. And, the fixing member is an aluminum alloy extruded shape member whose extrusion direction is in the vehicle up-down direction, the first vertical wall portion and / or the second vertical wall portion have a mounting seat portion attached to the seat, The mounting seat portion extends in a plane intersecting the extrusion direction. A seat mounting structure is provided.

[0007] According to the present invention, the seat is joined to the first vertical wall portion and / or the second vertical wall portion of the fixing member and fixed to the first rail member. Here, the second vertical wall portion extends along the vehicle longitudinal direction and the vehicle vertical direction, and therefore can support loads acting in the vehicle longitudinal direction and / or the vehicle vertical direction in the in-plane direction of the second vertical wall portion. Therefore, the support rigidity and strength of the seat provided by the fixing member can be improved not only in the vehicle vertical direction but also in the vehicle longitudinal direction.

[0008] For example, during normal driving, the increased support rigidity of the fixing member facilitates a more integrated feel of the seat with the vehicle floor. Furthermore, the fixing member can be configured to have strength suitable for resisting the inertial force acting on the seat in the event of a longitudinal load, such as a longitudinal collision load, acting on the vehicle. Therefore, the rigidity and strength of the fixing member in the longitudinal direction can be efficiently increased.

[0010] According to this configuration, the fixing member is an aluminum alloy extruded shape member whose extrusion direction is the vehicle vertical direction, and the first vertical wall portion and / or the second vertical wall portion has a mounting seat portion that is attached to the seat, and the mounting seat portion extends in a plane that intersects with the extrusion direction.By extruding an aluminum alloy material in the vehicle vertical direction, a fixing member having a first vertical wall portion and a second vertical wall portion can be easily formed as a single unit. Furthermore, because the mounting seat portion extends in a plane intersecting the extrusion direction, a load input from the mounting seat portion is transmitted in an in-plane direction to the first vertical wall portion and the second vertical wall portion. Therefore, out-of-plane deformation of the first vertical wall portion and the second vertical wall portion due to the input load is suppressed, and the first vertical wall portion and the second vertical wall portion can easily act to efficiently resist the load. In particular, when the mounting seat portion extends in an in-plane direction substantially perpendicular to the extrusion direction, the mounting seat portion can easily act to efficiently resist the load.

[0011] Furthermore, the fixing member has a fastening hole in the first vertical wall portion used for fixing to the first rail member with a fastening bolt, The fastening hole may extend in a direction that inclines upward as it increases in distance from the first rail member in the front-rear direction.

[0012] According to this configuration, when joining the fixing member to the base portion, the joining portion can be easily accessed from diagonally above at a position spaced apart in the fore-and-aft direction of the vehicle floor, improving joining workability.

[0013] The fixing member may have two or more of the first vertical wall portions or the second vertical wall portions.

[0014] According to this configuration, the fixing member has two or more first vertical wall portions or two or more second vertical wall portions, which further increases the rigidity and strength of the fixing member. In particular, when the fixing member is provided with two or more second vertical wall portions, it is easier to more efficiently increase the rigidity and strength of the fixing member in the front-rear and up-down directions.

[0015] Furthermore, the mounting seat portion is provided on each of the two or more first vertical wall portions or the two or more second vertical wall portions, The mounting seats may each have a different area and / or shape.

[0016] According to this configuration, the shape of the fixing member can be easily optimized by adjusting the shape of the mounting seat portion according to the required performance, and it is easy to more efficiently increase the rigidity and strength of the fixing member in the fore-and-aft direction while suppressing an increase in weight.

[0017] Another aspect of the present invention is A seat mounting structure that movably guides a seat relative to a vehicle body floor, a first rail member attached to the seat; a second rail member that movably guides the first rail member; a fixing member that fixes the second rail member to the vehicle body floor; It is equipped with The fixing member is a first vertical wall portion extending along the left-right direction of the vehicle and the up-down direction of the vehicle; a second vertical wall portion connected to the first vertical wall portion and extending along the vehicle front-rear direction and the vehicle up-down direction; It has The second rail member is joined to the first vertical wall portion and / or the second vertical wall portion. And, the fixing member is an aluminum alloy extruded shape member whose extrusion direction is in the vehicle up-down direction, the first vertical wall portion and / or the second vertical wall portion have a mounting seat portion to be attached to the second rail member, The mounting seat portion extends in a plane intersecting the extrusion direction. A seat mounting structure is provided.

[0018] According to the present invention, the effects of the invention are preferably exhibited when the first rail member is attached to the seat and the second rail member is fixed to the vehicle floor via a fixing member. [Effects of the Invention]

[0020] According to the present invention, the rigidity and strength of the fixing member that fixes the rail member to the vehicle body floor or the seat can be efficiently increased. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment of the present disclosure; [Figure 2A] FIG. 2 is a perspective view showing the seat mounting structure of FIG. 1; [Figure 2B] FIG. 2B is a side view of the main part of FIG. 2A. [Figure 2C] FIG. 2B is a plan view of the main part of FIG. 2A. [Figure 3] 10A to 10C are diagrams schematically illustrating a process for manufacturing a fixing member from an extruded profile. [Figure 4] FIG. 10 is a perspective view of a fixing member according to a first modified example of the first embodiment. [Figure 5] FIG. 10 is a perspective view of a fixing member according to a second modified example of the first embodiment. [Figure 6] FIG. 10 is a perspective view of a fixing member according to a third modified example of the first embodiment. [Figure 7] FIG. 10 is a perspective view of a fixing member according to a fourth modified example of the first embodiment. [Figure 8] FIG. 11 is a perspective view of a fixing member according to a fifth modified example of the first embodiment. [Figure 9A] FIG. 10 is a perspective view of a seat mounting structure according to a sixth modified example of the first embodiment. [Figure 9B] FIG. 9B is a side view of the main part of FIG. 9A. [Figure 9C] FIG. 9B is a plan view of the main part of FIG. 9A. [Figure 10A] FIG. 13 is a perspective view of a seat mounting structure according to a seventh modified example of the first embodiment. [Figure 10B] FIG. 10B is a side view of the main part of FIG. 10A. [Figure 10C] FIG. 10B is a plan view of the main part of FIG. 10A. [Figure 11A] FIG. 13 is a perspective view of a seat mounting structure according to an eighth modified example of the first embodiment. [Figure 11B] FIG. 11B is a side view of the main part of FIG. 11A. [Figure 11C] FIG. 11B is a plan view of the main part of FIG. 11A. [Figure 12] FIG. 10 is a perspective view of a fixing member according to a further modified example of the first embodiment. [Figure 13] FIG. 10 is a perspective view of a fixing member according to still another modified example of the first embodiment. [Figure 14] FIG. 10 is a perspective view of a vehicle seat according to a second embodiment of the present disclosure. [Figure 15] FIG. 15 is a perspective view showing the seat mounting structure of FIG. [Figure 16] FIG. 10 is a perspective view of a seat mounting structure according to a modified example of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] A seat mounting structure according to one embodiment of the present disclosure will be described below with reference to the accompanying drawings. Note that the following description is essentially merely exemplary and is not intended to limit the present invention, its applications, or its uses. Furthermore, the terms up, down, left, right, front, and rear in the accompanying drawings and the following description refer to the positions of an occupant seated in a seat according to one embodiment of the present invention.

[0023] [First embodiment] Fig. 1 is a perspective view of a vehicle seat 1 according to a first embodiment of the present disclosure. In Fig. 1, a seat cushion and a seat back are omitted from the seat 1. As shown in Fig. 1, the seat 1 has a seat frame 2 and a slide rail unit 10.

[0024] The seat frame 2 has a seat cushion frame 3 that supports the occupant from below, and a seat back frame 4 that supports the occupant from behind. The seat cushion frame 3 has a pair of cushion side frames 5 that extend in the front-rear direction and are spaced apart in the left-right direction, and a pair of cross frames 8 that extend in the left-right direction and are spaced apart in the front-rear direction and connect the pair of cushion side frames 5 to the left and right at the front and rear. The seat back frame 4 has a pair of back side frames 6 that extend in the up-down direction and are spaced apart in the left-right direction, and upper frames 7 that connect upper ends of the back side frames 6 to the left and right.

[0025] In this embodiment, a fixing member 100 is joined to a lower surface 8a of the cross frame 8, which extends in the left-right direction of the vehicle. At least the portion of the lower surface 8a that is joined to the fixing member 100 is made of an aluminum alloy.

[0026] The slide rail unit 10 has a fixed member 100 attached to a pair of front and rear cross frames 8, a first rail member 11 attached to the fixed member 100, and a second rail member 12 fixed to a vehicle floor 14 and movably guiding the first rail member 11 in the front-to-rear direction. In this embodiment, the second rail member 12 is fixed so as to be embedded in the vehicle floor 14 so as to be flush with a floor panel 15 of the vehicle floor 14.

[0027] The first rail member 11 and the second rail member 12 are provided in pairs on the left and right corresponding to the pair of left and right cushion side frames 5, respectively, and extend in the front-rear direction.

[0028] The fixing members 100 are provided in a pair at the front and rear of each of the pair of left and right first rail members 11. Therefore, the slide rail unit 10 has four fixing members 100: a first fixing member 100A at the front left, a second fixing member 100B at the rear left, a third fixing member 100C at the front right, and a fourth fixing member 100D at the rear right. The first fixing member 100A and the second fixing member 100B are symmetrical with respect to the third fixing member 100C and the fourth fixing member 100D, respectively. The first fixing member 100A and the third fixing member 100C are symmetrical with respect to the second fixing member 100B and the fourth fixing member 100D, respectively.

[0029] The fixing member 100 is made of an extruded extrusion material and has the same cross-sectional shape in the extrusion direction Z (see FIG. 3 ). In this embodiment, the extruded material is made of an aluminum alloy. The aluminum alloy is selected from, for example, the 5000 series, 6000 series, and 7000 series. By making the fixing member 100 out of an aluminum alloy extrusion material, it is possible to improve rigidity while suppressing an increase in weight compared to when the fixing member 100 is made of steel.

[0030] Fig. 2A is a perspective view showing the periphery of the first rail member 11 and second rail member 12 on the left side of the slide rail unit 10. Figs. 2B and 2C are a side view and a plan view showing an enlarged view of the front part of the slide rail unit 10 in Fig. 2A. In Figs. 2A to 2C, the cross frame 8 is shown transparently by a two-dot chain line, and the vehicle floor 14 is omitted. Below, the first fixing member 100A (simply referred to as fixing member 100) of the four fixing members 100 will be described with reference to Figs. 2A to 2C.

[0031] 2A to 2C, the fixing member 100 has a first vertical wall portion 101 extending in the vehicle left-right direction and the vehicle up-down direction, and a pair of left and right second vertical wall portions 102 connected to the left and right sides of the first vertical wall portion 101 and extending in the vehicle front-rear direction and the vehicle up-down direction, respectively. The first vertical wall portion 101 and the pair of left and right second vertical wall portions 102 have mounting seats 101a, 102a at their upper edges that extend flatly in the vehicle left-right direction and the vehicle front-rear direction. The mounting seats 101a, 102a are flush with each other. The fixing member 100 is joined to the underside 8a of the cross frame 8 at the mounting seats 101a, 102a.

[0032] As described above, since both the fixing member 100 and the lower surface 8a of the cross frame 8 are made of aluminum alloy, arc welding such as MIG or TIG can be used to join them along the mounting seats 101a, 102a. Other welding methods such as resistance, high frequency, electron beam, plasma, laser, and friction stir welding may also be used in place of or in combination with these welding methods. Furthermore, adhesive bonding may be used in place of or in combination with these welding methods.

[0033] The pair of left and right second vertical wall portions 102 are configured such that their length L1 in the vehicle longitudinal direction is equal to or less than the length L2 of the cross frame 8 so that they can be joined to the underside 8a of the cross frame 8. In this embodiment, the length L1 of the pair of left and right second vertical wall portions 102 is equal to the length L2 of the cross frame 8.

[0034] The fixing member 100 has fastening holes 103 formed therein that penetrate the first vertical wall portion 101 in a direction perpendicular to the surface. In this embodiment, the fastening holes 103 extend parallel to the front-to-rear direction. The fixing member 100 is fastened to the front end portion of the first rail member 11 from the front side by fastening bolts 9 through the fastening holes 103. Note that, with the fixing member 100 fixed to the first rail member 11, the first rail member 11 is spaced downward from the cross frame 8.

[0035] 3 is a diagram schematically illustrating a method for forming the fixing member 100. As shown in FIG. 3, first, an aluminum alloy is extruded from a die (not shown) in the extrusion direction Z (the vertical direction in the figure) to form an extruded blank 90. ​​The extruded blank 90 is cut in a direction perpendicular to the extrusion direction Z at intervals corresponding to the vehicle's vertical dimension of the fixing member 100 to form cut pieces 91. Finally, fastening holes 103 are formed in the first vertical wall portion 101 to form the fixing member 100. Therefore, the fixing member 100 has mounting seat portions 101a, 102a extending in an in-plane direction substantially perpendicular to the extrusion direction Z.

[0036] In this embodiment, one fixing member 100 is formed from one cut piece 91, but two fixing members 100 may be formed from one cut piece 91. In this case, although not shown, an extruded material may be formed into a rectangular hollow cross-sectional shape in which two fixing members 100 are arranged line-symmetrically so that the first vertical wall portions 101 are spaced apart, and the two fixing members 100 are joined to each other at the end faces of the second vertical wall portions 102 opposite the first vertical wall portions 101, a cut piece is formed from the extruded material, and the cut piece is separated into two along the extrusion direction Z, thereby forming two fixing members from one cut piece.

[0037] A seat mounting structure 70 according to the present disclosure is configured by the seat 1, the first rail member 11, the second rail member 12, the vehicle body floor 14, and the fixing member 100. The seat mounting structure 70 provides the following advantageous effects.

[0038] (1) The cross frame 8 is joined to the first vertical wall portion 101 and the second vertical wall portion 102 of the fixing member 100 and fixed to the first rail member 11. Here, the second vertical wall portion 102 extends along the vehicle longitudinal direction and the vehicle vertical direction, and therefore can support loads acting in the vehicle longitudinal direction and / or the vehicle vertical direction in the in-plane direction of the second vertical wall portion 102. Therefore, the support rigidity and strength of the cross frame 8 provided by the fixing member 100 can be improved not only in the vehicle vertical direction but also in the vehicle longitudinal direction.

[0039] For example, during normal driving, the improved support rigidity of the fixing member 100 makes it easier to improve the sense of unity of the seat 1 with the vehicle floor 14. Furthermore, in the event of a collision in which a load in the front-rear direction acts on the vehicle, for example, a collision load in the front-rear direction, the fixing member 100 is easily configured to have strength that adequately resists the inertial force acting on the seat 1. Therefore, the rigidity and strength of the fixing member 100 in the front-rear direction can be efficiently increased.

[0040] (2) The fixing member 100 having the first vertical wall portion 101 and the second vertical wall portion 102 can be easily formed integrally by extruding an aluminum alloy material in the extrusion direction Z, which corresponds to the vehicle up-down direction. Furthermore, since the mounting seats 101a, 102a extend in a plane intersecting the extrusion direction Z, a load input from the mounting seats 101a, 102a is transmitted in an in-plane direction to the first vertical wall portion 101 and the second vertical wall portion 102. Therefore, out-of-plane deformation of the first vertical wall portion 101 and the second vertical wall portion 102 due to the input load is suppressed, and the first vertical wall portion 101 and the second vertical wall portion 102 can easily act to resist the load efficiently. In this embodiment, the mounting seats 101a, 102a are perpendicular to the extrusion direction Z, and therefore can easily act to resist the load efficiently.

[0041] (3) Since the fixing member 100 has two second vertical wall portions 102, the rigidity and strength of the fixing member 100 in the front-rear and up-down directions can be further increased.

[0042] In the above embodiment, the cross frame 8 to which the fixing member 120 is joined is made of an aluminum alloy, but this is not limiting. For example, if the cross frame 8 is made of steel and the fixing member 100 is made of an aluminum alloy, it is necessary to prevent electrolytic corrosion due to the potential difference between the two metals. For this purpose, joining using an adhesive is preferable, but when using other mechanical joining means, such as rivets (round rivets, blind rivets, self-piercing rivets), bolts and nuts, etc., it is preferable to apply an insulating coating to the gap between the two components. This insulating coating can be achieved by using known methods, such as applying a resin coating such as a paint film to the steel side.

[0043] In addition, in the above embodiment, the pair of left and right mounting seats 102a have been described as having the same shape, but this is not limited to this. The pair of left and right mounting seats 102a may have different areas and / or shapes. This makes it easy to optimize the shape of the fixing member by adjusting the shape of the mounting seats 102a according to the required performance, and makes it easy to more efficiently increase the rigidity and strength of the fixing member in the front-to-rear direction while suppressing an increase in weight.

[0044] In addition, in the above embodiment, the case where there are two second vertical wall portions 102 has been described as an example, but this is not limiting. There may be three or more second vertical wall portions 102, and there may be two or more first vertical wall portions 101.

[0045] In the above embodiment, the fixing member 100 is joined to the underside 8a of the cross frame 8, but this is not limiting. If the seat 1 further includes a second slide rail unit between the cross frame 8 and the slide rail unit 10 that guides the movement of the seat 1 in the left-right direction, the fixing member 100 may be disposed between the second slide rail unit and the slide rail unit 10 so as to connect them.

[0046] (First Modification) Fig. 4 is a perspective view showing a main part of a seat mounting structure 71 according to a first modified example of the first embodiment, and shows an enlarged view of the periphery of a first fixing member 110A (simply referred to as fixing member 110) provided on the front side of the left slide rail unit 10. In the following modified examples, the same reference numerals are used for the same members as in the seat mounting structure 70, and their description will be omitted. In Fig. 4, the first rail member 11 is indicated by a two-dot chain line.

[0047] 4, similar to the fixing member 100, the fixing member 110 has a first vertical wall portion 111 and a pair of left and right second vertical wall portions 112. The fixing member 110 differs from the fixing member 100 in that each of the second vertical wall portions 112 has a closed cross-sectional structure.

[0048] Specifically, the second vertical wall portion 112 has a thickness t2 in the left-right direction that is thicker than the thickness t1 of the first vertical wall portion 111 in the front-rear direction, and has a hollow portion 112a that penetrates in the up-down direction at the center in the left-right direction. The hollow portion 112a has a cross-sectional shape in a direction perpendicular to the extrusion direction Z (i.e., the up-down direction) that is elongated in the front-rear direction along the extension direction of the second vertical wall portion 112. In this embodiment, the thickness t2 of the second vertical wall portion 112 is approximately 1.5 times the thickness t1 of the first vertical wall portion 111, and the thickness t3 of the hollow portion 112a in the left-right direction is set to approximately 0.5 times the thickness t1 of the first vertical wall portion 111. Furthermore, the second vertical wall portion 112 has a thickness t4 from the outer surface to the hollow portion 112a that is approximately equal to the thickness t3 of the hollow portion 112a.

[0049] According to the seat mounting structure 71 of the first modified example, the second vertical wall portion 112 of the fixing member 110 is configured to have a closed cross-sectional structure. As a result, the bending rigidity of the second vertical wall portion 112 about the front-rear axis is increased, thereby suppressing bending deformation of the second vertical wall portion 112 in response to left-right input (inertial force) to the seat 1. Furthermore, the buckling resistance load of the second vertical wall portion 112 in the up-down direction is increased, thereby suppressing buckling deformation of the second vertical wall portion 112 in response to front-rear input (inertial force) to the seat 1. Furthermore, the torsional rigidity and shear rigidity of the second vertical wall portion 112 in the front-rear direction are increased, thereby suppressing torsional deformation and in-plane shear deformation of the second vertical wall portion 112 in the front-rear direction in response to front-rear input (inertial force) to the seat 1.

[0050] (Second Modification) Figure 5 is a perspective view similar to Figure 4 showing the main parts of a seat mounting structure 72 relating to a second modified example of the first embodiment, and shows an enlarged view of the area around the first fixing member 120A (simply referred to as fixing member 120).

[0051] 5, the fixing member 120, like the fixing member 100, has a first vertical wall portion 121 and a pair of left and right second vertical wall portions 122. The fixing member 120 differs from the fixing member 110 according to the first modified example in that no hollow portion is formed in the second vertical wall portion 122. That is, the thickness t22 of the second vertical wall portion 122 is thicker than the thickness t21 of the first vertical wall portion 121, and in this embodiment, the thickness t22 is set to be approximately 1.5 times the thickness t21.

[0052] According to the seat mounting structure 72 of the second modification, the second vertical wall portion 122 is formed so that the thickness t22 is greater than the thickness t21 of the first vertical wall portion 121, while being solid and not hollow. As a result, the rigidity of each of the second vertical wall portions 122 can be made even higher than that of the fixing member 110 of the first modification, and the effect obtained by the fixing member 110 can be further improved.

[0053] (Third Modification) Figure 6 is a perspective view similar to Figure 4 showing the main parts of a seat mounting structure 73 relating to a third modified example of the first embodiment, and shows an enlarged view of the area around the first fixing member 130A (simply referred to as fixing member 130).

[0054] 6, the fixing member 130, like the fixing member 100, has a first vertical wall portion 131 and a pair of left and right second vertical wall portions 132. The fixing member 130 differs from the fixing member 100 in that it further has a pair of left and right third vertical wall portions 133 that connect the first vertical wall portion 131 and each of the pair of left and right second vertical wall portions 132 in a diagonal manner. As a result, in the fixing member 130, two closed cross-sectional structures 135 that have triangular cross sections and extend in the up-down direction are formed by the first vertical wall portion 131, the second vertical wall portion 132, and the third vertical wall portion 133 at each inner corner between the first vertical wall portion 131 and the pair of left and right second vertical wall portions 132.

[0055] The fixing member 130 has two closed cross-sectional structures 135 that increase the bending rigidity around the ridge between the first vertical wall portion 131 and the second vertical wall portion 132, thereby suppressing the change in angle between the first vertical wall portion 131 and the second vertical wall portion 132 in response to left-right input (inertial force) to the seat 1.

[0056] (Fourth Modification) Figure 7 is a perspective view similar to Figure 4 showing the main parts of a seat mounting structure 74 relating to a fourth modified example of the first embodiment, and shows an enlarged view of the area around the first fixing member 140A (simply referred to as fixing member 140).

[0057] 7, the fixing member 140, like the fixing member 100, has a first vertical wall portion 141 and a pair of left and right second vertical wall portions 142. The fixing member 140 differs from the fixing member 100 in that the fixing member 140 has a pair of left and right outer beads 143 that protrude outward in the left-right direction and extend in the up-down direction on the outer surfaces of each of the pair of left and right second vertical wall portions 142 (i.e., on the opposite side in the left-right direction from the first rail member 11).

[0058] The outer bead 143 extends in the up-down direction of the second vertical wall portion 142, and has a cross-sectional shape in a direction perpendicular to the extrusion direction Z (i.e., the up-down direction) that is trapezoidal in shape such that the length in the front-to-rear direction decreases as the outer bead 143 protrudes in the left-to-right direction. In this embodiment, the outer bead 143 is located approximately in the center of the second vertical wall portion 142 in the front-to-rear direction, and has a width W that is approximately 1 / 3 of the length L1 of the second vertical wall portion 145 in the front-to-rear direction.

[0059] The pair of left and right outer beads 143 of the fixing member 140 increase the bending rigidity of the second vertical wall portion 142 about the front-to-rear axis, thereby suppressing bending deformation of the second vertical wall portion 142 in response to left-to-right input (inertial force) to the seat 1. Furthermore, the pair of left and right outer beads 143 of the fixing member 140 also increase the buckling resistance load in the up-down direction of the second vertical wall portion 142, thereby suppressing buckling deformation of the second vertical wall portion 142 in response to front-to-rear input (inertial force) to the seat 1.

[0060] (Fifth Modification) Figure 8 is a perspective view similar to Figure 4 showing the main parts of a seat mounting structure 75 relating to a fifth variant of the first embodiment, and shows an enlarged view of the area around the first fixing member 150A (simply referred to as fixing member 150).

[0061] 8, similar to the fixing member 100, the fixing member 150 has a first vertical wall portion 151 and a pair of left and right second vertical wall portions 152. Furthermore, similar to the fixing member 140 according to the fourth modification, the fixing member 150 has a pair of left and right outer beads 153 that protrude outward in the left and right direction and extend in the up and down direction on the outer surfaces in the left and right direction of each of the pair of left and right second vertical wall portions 152.

[0062] The outer bead 153 extends in the up-down direction of the second vertical wall portion 142, and has a cross-sectional shape in a direction perpendicular to the extrusion direction Z (i.e., the up-down direction) that is triangular in shape, with the length in the front-to-rear direction decreasing as the outer bead 153 protrudes in the left-to-right direction. In this embodiment, the outer bead 153 is located approximately in the center of the second vertical wall portion 142 in the front-to-rear direction.

[0063] The pair of left and right beads 153 of the fixing member 150 increase the bending rigidity of the second vertical wall portion 152 about the front-to-rear axis, thereby suppressing bending deformation of the second vertical wall portion 152 in response to left-to-right input (inertial force) to the seat 1. Furthermore, the pair of left and right beads 153 of the fixing member 150 also increase the buckling resistance load in the up-down direction of the second vertical wall portion 152, thereby suppressing buckling deformation of the second vertical wall portion 152 in response to front-to-rear input (inertial force) to the seat 1.

[0064] (Sixth Modification) Fig. 9A is a perspective view similar to Fig. 2A, showing a seat mounting structure 76 according to a sixth modified example of the first embodiment. Figs. 9B and 9C are a side view and a plan view similar to Figs. 2B and 2C, respectively, showing a main part of the seat mounting structure 76. As shown in Figs. 9A to 9C, the seat mounting structure 76 has a different fixing member 160 and first rail member 13 compared to the seat mounting structure 70.

[0065] Similar to the fixing member 100, the fixing member 160 has a first vertical wall portion 161 and a pair of left and right second vertical wall portions 162. The first vertical wall portion 161 differs from the first vertical wall portion 101 of the fixing member 100 in that it extends upward in a direction that is inclined rearward. Similar to the fixing member 100, mounting seats 161a, 162a are formed on the upper edge portions of the first vertical wall portion 161 and the second vertical wall portion 162.

[0066] The extrusion direction Z of the fixing member 160 is parallel to the first vertical wall portion 161 in a side view of the vehicle. In other words, the extrusion direction Z is inclined with respect to the vertical direction of the vehicle. The mounting seat portions 161a, 162a of the fixing member 160 are inclined with respect to the extrusion direction Z. The fastening hole 163 formed in the first vertical wall portion 161 also extends in a direction inclined upward toward the front. The front end surface 13a of the first rail member 13 is formed parallel to the first vertical wall portion 161. The fixing member 160 is joined to the underside 8a of the cross frame 8 at the mounting seat portions 161a, 162a, and is fixed to the front end surface 13a of the first rail member 13 at the first vertical wall portion 161 by fastening bolts 9 via the fastening holes 163.

[0067] According to the seat mounting structure 76 of the sixth modified example, the fastening hole 163 extends in a direction inclined upward toward the front, so that when joining the fixing member 160 to the first rail member 13, the joining portion can be easily accessed from diagonally above at a position spaced forward from the vehicle floor 14, making the joining work easier.

[0068] (Seventh Modification) Fig. 10A is a perspective view similar to Fig. 2A, showing a seat mounting structure 77 according to a seventh modified example of the first embodiment. Figs. 10B and 10C are a side view and a plan view similar to Figs. 2B and 2C, respectively, showing a main part of the seat mounting structure 77. As shown in Figs. 10A to 10C, the seat mounting structure 77 has a different fixing member 170 than the seat mounting structure 76 according to the sixth modified example.

[0069] Similar to the fixing member 160, the fixing member 170 has a first vertical wall portion 171 and a pair of left and right second vertical wall portions 172. The pair of left and right second vertical wall portions 172 have vertical extending portions 174 extending in the vehicle vertical direction along the front surface 8b of the cross frame 8, and longitudinal extending portions 175 extending in the vehicle longitudinal direction along the lower surface 8a, and are formed in an L shape in a side view of the vehicle. The front edges of the vertical extending portions 174 are inclined upward and rearward.

[0070] The first vertical wall portion 171 connects the front edge portions of the pair of left and right vertical extending portions 174 in the left-right direction of the vehicle. A fastening hole 173 is formed in the first vertical wall portion 171, penetrating in the front-rear direction of the vehicle (direction perpendicular to the surface). The first vertical wall portion 171 extends upward and in a direction inclined rearward along the front end surface 13a of the first rail member 13. The first vertical wall portion 171 is spaced forward from the cross frame 8 with a gap therebetween.

[0071] The fixing member 170 is joined to the cross frame 8 at a pair of left and right second vertical wall portions 172, and is fixed to the front end surface 13a of the first rail member 13 by fastening bolts 9 through fastening holes 173. Specifically, the second vertical wall portions 172 are joined to the lower surface 8a of the cross frame 8 at upper edges of the front-rear extending portions 175, and are joined to the front surface 8b of the cross frame 8 at rear edges of the up-down extending portions 174. Therefore, in the seat mounting structure 77 according to the seventh modified example, mounting seats 172a are formed at the upper edges of the front-rear extending portions 175 and the rear edges of the up-down extending portions 174, respectively.

[0072] (Eighth Modification) Fig. 11A is a perspective view similar to Fig. 2A, showing a seat mounting structure 78 according to an eighth modified example of the first embodiment. Figs. 11B and 11C are a side view and a plan view similar to Figs. 2B and 2C, respectively, showing a main part of the seat mounting structure 78. As shown in Figs. 11A to 11C, the seat mounting structure 78 has a fixing member 180 that is different from that of the seat mounting structure 77 according to the seventh modified example.

[0073] Like the fixing member 170, the fixing member 180 has a first vertical wall portion 181 and a pair of left and right second vertical wall portions 182; however, the configuration of the second vertical wall portions 182 differs from that of the second vertical wall portion 172 of the fixing member 170. The second vertical wall portion 182 has a front-to-rear extending portion 185 that extends in a direction sloping upward toward the rear, connecting the up-and-down extending portion 184 and the underside 8a of the cross frame 8 in a diagonal brace manner. A slit 185a is formed in the front-to-rear extending portion 185 at approximately the center in the up-and-down direction. The slit 185a extends in the direction of extension of the front-to-rear extending portion 185, i.e., in a direction sloping upward toward the rear. The slit 185a opens at the upper edge of the front-to-rear extending portion 185. Mounting seats 182a that are connected to the underside 8a and front side 8b of the cross frame 8, respectively, are formed at the upper edge of the front-to-rear extending portion 185 and the rear edge of the up-and-down extending portion 184. The mounting seat portion 182a formed on the upper edge of the front-rear extending portion 185 is separated into front and rear portions by a slit 185a.

[0074] According to the seat mounting structure 78 of the eighth modified example, the fixing member 180 is configured to be long in the front-to-rear direction so as to extend over the underside 8a of the cross frame 8, thereby increasing the support rigidity, while being formed in a diagonal brace shape and having a slit 185a formed therein, thereby suppressing an increase in weight.

[0075] Furthermore, as described above, the fixing member is made of an extruded member, and therefore, it is possible to form the fixing member with different thicknesses in different portions, for example, by making the portions requiring greater rigidity thicker. For example, as shown in Fig. 12, a fixing member 190 according to a ninth modified example may be formed using the fixing member 170 according to the seventh modified example as a base, so that the first vertical wall portion 191 has a thick portion 194. The thick portion 194 extends in the up-down direction in a region of the first vertical wall portion 191 that is approximately central in the left-right direction. The thick portion 194 further improves the rigidity of the first vertical wall portion 191, and therefore the supporting rigidity of the seat 1 provided by the fixing member 190 is further improved.

[0076] 13, a fixing member 196 according to a tenth modification may be formed based on the fixing member 170 according to the seventh modification, so as to have a thickened portion 199 that thickens the inner corner between a first vertical wall portion 197 and a second vertical wall portion 198 in a chamfered manner. The thickened portion 199 extends in the up-and-down direction along the inner corner between the first vertical wall portion 197 and the second vertical wall portion 198. The thickened portion 199 improves the bending rigidity between the first vertical wall portion 197 and the second vertical wall portion 198, thereby further improving the supporting rigidity of the seat 1 provided by the fixing member 196.

[0077] [Second embodiment] Fig. 14 is a perspective view of a seat 21 according to a second embodiment of the present disclosure. In Fig. 14, the seat cushion and the seat back are omitted from the seat 21. As shown in Fig. 14, the seat 21 has a seat frame 22 and a slide rail unit 30.

[0078] The seat frame 22 has a seat cushion frame 23 that supports the occupant from below, and a seat back frame 24 that supports the occupant from behind. The seat cushion frame 23 has a pair of cushion side frames 25 that extend in the front-rear direction and are spaced apart in the left-right direction. The seat back frame 24 has a pair of back side frames 26 that extend in the up-down direction and are spaced apart in the left-right direction, and an upper frame 27 that connects the upper ends of the back side frames 26 to the left and right.

[0079] The slide rail unit 30 has a first rail member 31 attached to the cushion side frame 25, a second rail member 32 that guides the first rail member 31 so that it can move in the forward and backward directions, and a fixing member 200 that fixes the second rail member 32 to the vehicle floor 34.

[0080] The first rail member 31 and the second rail member 32 are provided in pairs on the left and right corresponding to the pair of left and right cushion side frames 25, respectively, and extend in the front-rear direction. In this embodiment, the second rail member 32 is joined to the fixed member 200 at a lower surface 32a and a left side surface 32b extending in the front-rear direction. At least the portions of the lower surface 32a and the left side surface 32b joined to the fixed member 200 are made of an aluminum alloy.

[0081] The fixing members 200 are provided in a pair at the front and rear, corresponding to the front and rear of each of the pair of left and right second rail members 32. Therefore, the slide rail unit 30 has four fixing members 200, consisting of a first fixing member 200A at the front left, a second fixing member 200B at the rear left, a third fixing member 200C at the front right, and a fourth fixing member 200D at the rear right. The first fixing member 200A and the second fixing member 200B are symmetrical with respect to the third fixing member 200C and the fourth fixing member 200D, respectively. The first fixing member 200A and the third fixing member 200C are symmetrical with respect to the second fixing member 200B and the fourth fixing member 200D, respectively.

[0082] Like the fixing member 100 according to the first embodiment, the fixing member 200 is made of an extruded extrusion material and has the same cross-sectional shape in the extrusion direction Z (see FIG. 15) along the vehicle vertical direction. In this embodiment, the extrusion material is made of an aluminum alloy. The aluminum alloy is selected from, for example, the 5000 series, 6000 series, and 7000 series.

[0083] The vehicle body floor 34 has a floor panel 35 that forms the floor surface inside the vehicle cabin, and a floor cross member 36 that is joined to the upper surface of the floor panel 35 and extends in the left-right direction of the vehicle. A pair of floor cross members 36 are provided in the front and rear, respectively, directly below the front and rear portions of the second rail member 32.

[0084] Figure 15 is a perspective view showing the periphery of the first rail member 31 and second rail member 32 on the left side of the slide rail unit 30. In Figure 15, the first rail member 31 and the second rail member 32 are shown transparently by two-dot chain lines. Below, the first fixing member 200A (simply referred to as fixing member 200) of the four fixing members 200 will be described with reference to Figure 15.

[0085] 15, the fixing member 200 has a pair of first vertical wall portions 201 spaced apart in the vehicle longitudinal direction, and a single second vertical wall portion 202 connecting the left edge portions of the first vertical wall portions 201 in the longitudinal direction. The pair of front and rear first vertical wall portions 201 extend in the vehicle transverse direction and in the vehicle vertical direction. The second vertical wall portion 202 extends in the vehicle longitudinal direction and in the vehicle vertical direction.

[0086] The first vertical wall portion 201 has an L-shape in a front view of the vehicle, and includes a left-right extending portion 204 extending in the left-right direction of the vehicle along the lower surface 32a of the second rail member 32, and an up-down extending portion 205 extending in the up-down direction along the left side surface 32b of the second rail member 32. The second vertical wall portion 202 is spaced apart on the left side of the second rail member 32. Furthermore, the second vertical wall portion 202 extends downward to the floor cross member 36, and has a flange 206 at its lower edge that extends to the left and along the upper surface of the floor cross member 36. A fastening hole 203 extending in the up-down direction is formed in the flange 206.

[0087] The fixing member 200 is joined to the second rail member 32 at a pair of front and rear first vertical wall portions 201, and is fixed to the floor cross member 36 with fastening bolts 9 via fastening holes 203. Specifically, the first vertical wall portion 201 is joined to the lower surface 32a of the second rail member 32 at the upper edge portion of the left-right extending portion 204, and is joined to the left side surface 32b of the second rail member 32 at the right edge portion of the up-down extending portion 205. Therefore, mounting seats 201a are formed at the upper edge portion of the left-right extending portion 204 and the right edge portion of the up-down extending portion 205, respectively.

[0088] As described above, since the fixing member 200 and the lower surface 32a and left side surface 32b of the second rail member 32 are all made of aluminum alloy, arc welding such as MIG or TIG can be used to join them along the mounting seat portion 201a. Other welding methods such as resistance, high frequency, electron beam, plasma, laser, and friction stir welding may also be used in place of or in combination with these welding methods. Furthermore, adhesive bonding may also be used in place of or in combination with these welding methods.

[0089] When the fixing member 200 is formed from an aluminum alloy extruded profile, the second vertical wall portion 202 and the flange 206 can be formed by extrusion so that they extend integrally along the extrusion direction Z, and then the flange 206 can be bent relative to the second vertical wall portion 202.

[0090] The seat mounting structure 80 according to the present disclosure is made up of the seat 21, the first rail member 31, the second rail member 32, the vehicle body floor 34, and the fixing member 200. The seat mounting structure 80 provides the following advantageous effects.

[0091] (1) The second rail member 32 is joined to a pair of front and rear first vertical wall portions 201 of the fixed member 200 and fixed to the vehicle body floor 34, and the pair of front and rear first vertical wall portions 201 are connected front to back by the second vertical wall portion. Here, the second vertical wall portion 202 extends along the vehicle longitudinal direction and the vehicle vertical direction, and therefore can support loads acting in the vehicle longitudinal direction and / or the vehicle vertical direction in the in-plane direction of the second vertical wall portion 202. Therefore, the support rigidity and strength of the second rail member 32 by the fixed member 200 can be improved not only in the vehicle vertical direction but also in the vehicle longitudinal direction.

[0092] For example, during normal driving, the improved support rigidity of the fixing member 200 can easily improve the sense of unity of the seat 21 with the vehicle floor 34. Furthermore, in the event of a collision in which a load in the front-rear direction acts on the vehicle, for example, a collision load in the front-rear direction, the fixing member 200 can easily be configured to have strength that adequately resists the inertial force acting on the seat 21. Therefore, the rigidity and strength of the fixing member 200 in the front-rear direction can be efficiently increased.

[0093] (2) The fixing member 200 having the first vertical wall portion 201 and the second vertical wall portion 202 can be easily formed integrally by extruding an aluminum alloy material in the extrusion direction Z, which corresponds to the vehicle up-down direction. Furthermore, since the mounting seat portion 201a extends in a plane intersecting the extrusion direction Z, a load input from the mounting seat portion 201a is transmitted in an in-plane direction to the first vertical wall portion 201. Therefore, the first vertical wall portion 201 is prevented from being deformed out of plane by the input load, and is therefore more likely to act to efficiently resist the load. Note that in this embodiment, the mounting seat portion 201a is perpendicular to the extrusion direction Z, and is therefore even more likely to act to efficiently resist the load.

[0094] (3) Since the fixing member 200 has two first vertical wall portions 201, the rigidity and strength of the fixing member 200 in the left-right and up-down directions can be further increased.

[0095] In the above embodiment, the second rail member 32 to which the fixing member 200 is joined is made of an aluminum alloy, but this is not limiting. For example, the present invention can also be applied to a case where the second rail member 32 is made of steel, similar to the fixing member 100 according to the first embodiment.

[0096] Furthermore, in the above embodiment, the pair of front and rear mounting seats 201a have been described as having the same shape, but this is not limited to this. The pair of front and rear mounting seats 201a may have different areas and / or shapes. This makes it easy to optimize the shape of the fixing member by adjusting the shape of the mounting seats 201a according to the required performance, and makes it easy to more efficiently increase the rigidity and strength of the fixing member in the front-rear direction while suppressing an increase in weight.

[0097] In addition, in the above embodiment, an example has been described in which there are two first vertical wall portions 201, but this is not limiting. There may be three or more first vertical wall portions 201, and there may be two or more second vertical wall portions 202.

[0098] Furthermore, in the above embodiment, an example was described in which the mounting seat portion 201a is configured on the first vertical wall portion 201, but instead of or in addition to this, a mounting seat portion may be configured on the upper edge surface of the second vertical wall portion 202, and the mounting seat portion may be configured to join to the second rail member 32.

[0099] (Variation) Figure 16 is a perspective view similar to Figure 15, showing a seat mounting structure 81 according to a modified example of the second embodiment. As shown in Figure 16, the seat mounting structure 81 has a fixing member 210 that is fixed to the vehicle floor 34 differently from the seat mounting structure 80. A base portion 37, to which the fixing member 210 is attached, is joined to the vehicle floor 34 on a floor cross member 36. The base portion 37 is configured in a box shape.

[0100] The fixing member 210 has a pair of front and rear first vertical wall portions 211 and a single second vertical wall portion 212 connecting the left edge portions of the first vertical wall portions 211 in the front-rear direction. The pair of front and rear first vertical wall portions 211 extend in the left-right direction and the up-down direction of the vehicle. The second vertical wall portion 212 extends in the front-rear direction and the up-down direction of the vehicle.

[0101] Specifically, the fixing member 210 has a fastening hole 213 formed in the second vertical wall portion 212. The left side surface 37c of the base portion 37 is adjacent to the second vertical wall portion 212 from the right side. Therefore, the fixing member 210 is fixed to the base portion 37 in the left-right direction of the vehicle at the second vertical wall portion 212 by the fastening bolt 9 via the fastening hole 213. In other words, the fixing member 210 according to the modified example differs from the fixing member 200 according to the seat mounting structure 80 in that it does not require the formation of a flange and therefore has a simplified configuration, but it still requires the provision of the base portion 37 on the vehicle body floor 34.

[0102] The present invention is not limited to the configurations described in the above embodiments, and various modifications are possible. [Explanation of symbols]

[0103] 1 sheet 2 seat frames 9 Fastening bolts 10 Slide rail unit 11 First rail member 12 Second rail member 14 Body Floor 15 Floor Panel 70 seat mounting structure 90 Extruded Material 91 Cut piece 100 Fixing member 101 1st vertical wall section 101a Mounting seat 102 Second vertical wall section 102a Mounting seat 103 Fastening hole Z extrusion direction

Claims

1. A seat mounting structure for movably mounting a seat to a vehicle body floor, a fixing member attached to the sheet; a first rail member attached to the fixed member; a second rail member fixed to the vehicle body floor and movably guiding the first rail member; It is equipped with The fixing member is a first vertical wall portion extending along the vehicle left-right direction and the vehicle up-down direction; a second vertical wall portion connected to the first vertical wall portion and extending along the vehicle front-rear direction and the vehicle up-down direction; It has the first vertical wall portion and / or the second vertical wall portion are joined to the sheet, the fixing member is an aluminum alloy extruded shape member whose extrusion direction is in the vehicle up-down direction, the first vertical wall portion and / or the second vertical wall portion have a mounting seat portion attached to the seat, The mounting seat portion extends in a plane intersecting the extrusion direction.

2. the fixing member has a fastening hole in the first vertical wall portion used for fixing to the first rail member with a fastening bolt, The fastening hole extends in a direction inclined upward as it moves away from the first rail member in the front-rear direction. The seat mounting structure according to claim 1 .

3. A seat mounting structure for movably mounting a seat to a vehicle body floor, a first rail member attached to the seat; a second rail member that movably guides the first rail member; a fixing member that fixes the second rail member to the vehicle body floor; It is equipped with The fixing member is a first vertical wall portion extending along the left-right direction of the vehicle and the up-down direction of the vehicle; a second vertical wall portion connected to the first vertical wall portion and extending along the vehicle front-rear direction and the vehicle up-down direction; It has the second rail member is joined to the first vertical wall portion and / or the second vertical wall portion, the fixing member is an aluminum alloy extruded shape member whose extrusion direction is in the vehicle up-down direction, the first vertical wall portion and / or the second vertical wall portion have a mounting seat portion to be attached to the second rail member, The mounting seat portion extends in a plane intersecting the extrusion direction.

4. The fixing member has two or more of the first vertical wall portions or the second vertical wall portions. The seat mounting structure according to any one of claims 1 to 3.

5. the fixing member has two or more of the first vertical wall portions or the second vertical wall portions, the mounting seat portion is provided on each of the two or more first vertical wall portions or the two or more second vertical wall portions, The mounting seats each have a different area and / or shape. The seat mounting structure according to any one of claims 1 to 3.

Images