JP5487234B2 - Automobile seat fixing structure - Google Patents

Description

  The present invention relates to an automobile seat fixing structure in which seat leg portions are attached to a floor of a passenger compartment.

2. Description of the Related Art An automobile seat fixing structure includes a structure in which a front collision load is transmitted to a side sill using a seat outer bracket that fixes a seat leg.
In this structure, the end of the cross member that extends from side to side is joined to the left and right side sills, the side member (floor frame) that extends from the front is joined to the front of this end, and the seat outer bracket is placed on this end. The seat outer bracket protrudes from the side sill toward the floor tunnel.
Therefore, the load input to the side member (floor frame) can be distributed to the side sill via the end of the cross member and the seat outer bracket (see, for example, Patent Document 1).

However, in the prior art (Patent Document 1), the height of the cross member and the height of the floor frame are substantially the same. As a result, the box-shaped seat outer bracket projects upward from the floor frame, so that the floor of the rear passenger The footrest space on the frame is reduced.
Further, since the box-shaped seat outer bracket comes out from the left and right side sills toward the center, the footrest space is reduced.

JP 2005-219521 A

  An object of the present invention is to provide a vehicle seat fixing structure that secures a footrest space for a rear occupant and supports a heavy seat even when the leg portion of the seat is fixed to the floor frame.

  In order to solve the above-described problems, the invention according to claim 1 is directed to a seat fixing structure for an automobile in which a leg portion of a seat is fastened to an underbody that forms a floor of a passenger compartment, and the leg portion is rearward from the rear portion of the seat leg. There is a rear extension fixing part for fastening extended, a fixing part cover for covering the rear extension fixing part is provided, the underbody has a floor frame on which the leg is placed, and the floor frame extends rearward A fastening pressure receiving portion that comes into contact with a rear fastening portion of the fixing portion; and a bead on which an edge of the fixing portion cover protrudes upward at a peripheral portion connected to the fastening pressure receiving portion, and the edge of the bead and the peripheral portion and the fixing portion cover. It is characterized by sandwiching a carpet laid on the underbody.

  In the invention according to claim 2, the floor frame has a groove shape and includes a top portion facing upward, and a first wall portion and a second wall portion connected to the top portion. It is a circular bulge part which is provided in the part and protrudes in a circular shape upward from the top part.

  In the invention according to claim 3, the floor frame has a first frame angle rounded portion formed by the top portion and the first wall portion, and a second frame angle formed by the top portion and the second wall portion. The bead has a bead bulging rounded portion continuous with the top, and the bead bulging rounded portion is continuous with at least one of the first frame angular rounded portion and the second frame angular rounded portion. It is characterized by.

  In the invention according to claim 4, the circular raised portion has a raised round portion that is continuous with the top portion, and the raised round portion is continued to at least one of the first frame corner round portion and the second frame corner round portion. It is characterized by.

  The invention according to claim 5 is characterized in that a plurality of beads extend radially outward from the outer peripheral portion of the circular raised portion.

  In the invention according to claim 6, the seat is the left and right front seats, the leg portion is composed of an outer leg portion and an inner leg portion respectively provided with rearward extending fixing portions, and the underbody rests the floor frame. Floor panel, a tunnel part formed by raising the floor panel between the left and right front seats, and another fastening pressure receiving part provided close to the tunnel part, and the floor frame is parallel to the tunnel part Extend the straight frame part from the front of the underbody to the lower part of the front seat, extend the curved frame part toward the side sill that forms the left and right ends of the underbody, and extend the outer leg part to the curved frame part. A fastening pressure receiving portion for fastening the rear extension fixing portion is provided, and the inner leg portion is fastened to another fastening pressure receiving portion.

  In the invention according to claim 1, the leg portion of the seat has a rearward extending fixing portion for fastening extended rearward from the rear portion of the seat leg, and a fixing portion cover for covering the rearward extending fixing portion is provided. The underbody floor frame includes a fastening pressure receiving portion with which the rear fastening portion of the rear extension fixing portion contacts, and a bead on which an edge of the fixing portion cover rests and protrudes upward to a peripheral portion connected to the fastening pressure receiving portion. A carpet placed on the underbody is sandwiched between the bead and the peripheral part and the edge of the fixed part cover, so that a footrest space for placing the feet of passengers sitting on the rear seat on the fixed part cover extending backward is secured. be able to.

  In addition, the fixed portion cover has an advantage that the load input by the occupant's feet can be distributed to the beads via the carpet, and the occupant sitting on the rear seat does not rattle.

  In the invention according to claim 2, the floor frame has a groove shape and includes a top portion facing upward, and a first wall portion and a second wall portion connected to the top portion. Since the circular raised portion is provided in the portion and protrudes in a circular shape upward from the top, the strength of the fastening pressure receiving portion is improved, and a heavier seat can be supported.

  In the invention according to claim 3, the floor frame has a first frame angle rounded portion formed by the top portion and the first wall portion, and a second frame angle formed by the top portion and the second wall portion. The bead has a bead bulging rounded portion continuous with the top, and the bead bulging rounded portion is continuous with at least one of the first frame angular rounded portion and the second frame angular rounded portion. Therefore, when a load is input to the fastening pressure receiving part (circular bulge part) from the rear extension fixing part of the seat, the floor is passed from the fastening pressure receiving part (circular bulge part) through the bead bulging round part of the bead. It is possible to transmit the load almost directly to at least one of the frames (for example, the second frame corner radius portion) and to distribute the load to the second wall portion continuous with the second frame corner radius portion. Therefore, a heavier sheet can be supported.

  In the invention according to claim 4, the circular raised portion has a raised round portion that is continuous with the top portion, and the raised round portion is continued to at least one of the first frame corner round portion and the second frame corner round portion. Therefore, when a load is input to the fastening pressure receiving portion (circular bulging portion) from the rearward extending fixing portion of the seat, at least one of the floor frames from the fastening pressure receiving portion (circular bulging portion) via the raised round portion The load can be transmitted almost directly to the first wall corner (for example, the first frame corner radius portion), and the load can be distributed to the first wall portion continuous to the second frame corner radius portion. Therefore, a heavier sheet can be supported.

  In the invention according to claim 5, since a plurality of beads extend radially outward from the outer peripheral portion of the circular raised portion, the edge of the fixing portion cover rests on the beads extending radially outward. The part cover can be supported stably.

In the invention according to claim 6, the seat is the left and right front seats, the leg portion is composed of an outer leg portion and an inner leg portion respectively provided with rearward extending fixing portions, and the underbody rests the floor frame. Floor panel, a tunnel part formed by raising the floor panel between the left and right front seats, and another fastening pressure receiving part provided close to the tunnel part, and the floor frame is parallel to the tunnel part Extend the straight frame part from the front of the underbody to the lower part of the front seat. A fastening pressure receiving part that fastens the rear extension fixing part is provided, and the inner leg is fastened to another fastening pressure receiving part, so there is room in the foot space of the rear seat and it is comfortable
That is, the outer leg of the front seat is arranged at the end of the floor panel, and the inner leg of the front seat is arranged in the center of the floor panel, so that a space just under the front seat can be secured, and the foot space Is comfortable and comfortable.

1 is a perspective view of a vehicle seat fixing structure according to an embodiment of the present invention. It is a perspective view of the center of the underbody which assembles the sheet concerning an example. FIG. 3 is a detailed view of part 3 of FIG. 1. It is a perspective view which shows the assembly | attachment state of the carpet which reaches the leg part vicinity of a sheet | seat. It is a perspective view of the back extension fixing part of a sheet. It is a perspective view of the rear fastening part of a floor frame. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 6. FIG. 9 is an enlarged cross-sectional view taken along line 9-9 in FIG. 6.

  Hereinafter, embodiments of the present invention will be described in detail with reference to examples.

As shown in FIGS. 1 and 2, the automobile 11 employs the seat fixing structure of the automobile 11 according to the embodiment.
In the seat fixing structure, a seat 16 is attached to the floor frame 14 and the floor panel 15 of the underbody 13, and a carpet 17 (shown in a dotted pattern) is laid on the underbody 13.

Next, the main structure of the seat fixing structure of the automobile 11 will be described with reference to FIGS.
In the seat fixing structure of the automobile 11, the leg portion 21 of the seat 16 is fastened to the underbody 13 that forms the floor of the passenger compartment 18.
The leg portion 21 includes a rearward extending fixing portion 23 for fastening that extends rearward from the seat leg rear portion 22 of the leg portion 21, and a fixing portion cover 24 that covers the rearward extending fixing portion 23 is provided. Yes.

The underbody 13 has a floor frame 14 on which the leg portion 21 is placed.
The floor frame 14 protrudes upward (in the direction of arrow a1 in FIG. 7) and fastens to a fastening pressure receiving portion 27 with which the rear fastening portion 26 of the rear extension fixing portion 23 contacts and a peripheral portion 28 connected to the fastening pressure receiving portion 27. A bead 38 on which the edge 31 of the part cover 24 is placed.
In the seat fixing structure, the carpet 17 laid on the underbody 13 is sandwiched between the bead 38 and the peripheral portion 28 provided on the floor frame 14 and the edge 31 of the fixing portion cover 24 for the leg portion 21.

The floor frame 14 has a groove shape and has a top portion 33 facing upward, and a first wall portion 34 and a second wall portion 35 that are connected to the top portion 33 and extend from the top portion 33 toward the floor panel 15. .
The fastening pressure receiving portion 27 is a circular raised portion that is provided on the top portion 33 and protrudes upward in a circular shape from the top portion 33.

  Further, the floor frame 14 has a first frame angle rounded portion 36 formed by the top portion 33 and the first wall portion 34, and a second frame angle formed by the top portion 33 and the second wall portion 35. A round portion 37.

The bead 38 has a bead bulge radius portion 41 that is continuous with the top portion 33, and the bead bulge radius portion 41 is continuous with at least one of the first frame corner radius portion 36 and the second frame corner radius portion 37. Yes.
Here, as shown in FIG. 8, the bead bulging round portion 41 is made continuous with the second frame corner round portion 37.

  The circular raised portion (fastening pressure receiving portion 27) has a raised round portion 42 that is continuous with the top portion 33, and the raised round portion 42 is at least one of the first frame corner round portion 36 and the second frame corner round portion 37. It is made to continue.

Here, as shown in FIG. 9, the raised round portion 42 is made continuous with the first frame corner round portion 36.
A plurality of beads 38 extend radially from the outer peripheral portion 43 of the circular raised portion (fastening pressure receiving portion 27) radially outward (arrow a2).

The seat 16 is a front seat.
Further, the leg portion 21 is composed of an outer leg portion 44 and an inner leg portion 45 provided with a rearward extension fixing portion 23, respectively.

  The underbody 13 is provided close to the tunnel panel 46, the floor panel 15 on which the floor frame 14 is placed, the tunnel panel 46 formed by raising the floor panel 15 between the left and right front seats 16a, 16b. And another fastening pressure receiving portion 47.

Further, the floor frame 14 extends from the front part 48 of the underbody 13 to the lower part of the front seats 16 a and 16 b in parallel to the tunnel part 46, and continues to the straight frame part 51, and the left and right ends of the underbody 13 are continuous. A fastening pressure receiving portion 27 is provided to extend the bent frame portion 53 toward the side sill 52 that forms the rear sill 52 and to fasten the rearward extending fixing portion 23 of the outer leg portion 44 to the bent frame portion 53.
The inner leg portion 45 is fastened to another fastening pressure receiving portion 47.

  Next, the rear extension fixing part 23 of the leg part 21, the fastening pressure receiving part 27 of the floor frame 14, the bead 38 of the floor frame 14, and the fixing part cover 24 for the leg part 21 will be described in detail.

  The rear extension fixing part 23 is made of a steel plate, the rear fastening part 26 is formed in a substantially square shape, the peripheral wall 56 is erected continuously with the rear fastening part 26, and the fixing part cover 24 is placed with the peripheral wall 56. An end 57 is formed. The rear extension fixing portion 23 is fastened to the fastening pressure receiving portion 27 of the floor frame 14 with a screw member 58.

The fastening pressure receiving portion 27 forms a female screw portion 61 on the steel plate, forms a flat portion 62 with a radius r around the center of the female screw portion 61, and forms an outer peripheral portion 43 connected to the flat portion 62. The portion 43 is continuous with the peripheral portion 28.
The peripheral portion 28 is the top portion 33 in the vicinity of the outer peripheral portion 43, and beads 38 (first bead 71 to sixth bead 76) are formed on the peripheral portion 28.

The first bead 71 to the sixth bead 76 are formed at a pitch of about 45 °.
The 1st bead 71 and the 5th bead 75 have a line S passing through the center of the female thread portion 61 and extending in the extending direction of the top portion 33 as the center of the width.

The third bead 73 is provided at the center between the first bead 71 and the fifth bead 75 and is formed at a position of about 90 ° from the first bead 71.
The second bead 72 is provided between the first bead 71 and the third bead 73 and is formed at a position of about 45 ° from the first bead 71.

The fourth bead 74 is provided between the third bead 73 and the fifth bead 75 and is formed at a position of about 135 ° from the first bead 71.
The sixth bead 76 is opposite to the second bead 72.
The carpet 17 is placed on the first bead 71 to the sixth bead 76, and the carpet 17 is sandwiched between the first bead 71 to the sixth bead 76 and the edge 31 of the fixed portion cover 24.

The fixing part cover 24 is made of resin and extends rearward continuously and continuously after being attached to the end of the leg cover 78 that covers the outer leg part 44 except for the rear extension fixing part 23. is there.
Further, a backup portion 81 is formed at the end of the leg cover 78, a locking hole 82 penetrating the backup portion 81 is opened, and a locking claw 84 that locks the locking body 82 of the fixed portion cover 24 in the locking hole 82. Forming.

  The cover body 83 forms a mounting portion 85 that is mounted on the mounting end portion 57 of the rear extension fixing portion 23, and is provided with an edge 31 that is connected to the mounting portion 85 and contacts the bead 38.

  The carpet 17 has an opening 87 corresponding to the rear extension fixing part 23 in the existing fabric. The opening 87 is sized to be placed on the first bead 71 to the sixth bead 76, is smaller than the edge 31 of the fixed part cover 24, and is hidden by the fixed part cover 24.

Next, the operation of the seat fixing structure of the automobile 11 will be described.
In the seat fixing structure, it is possible to secure a footrest space for placing the foot of the passenger sitting on the rear seat on the fixing portion cover 24 extending rearward.

  In addition, the fixed portion cover 24 can distribute the load input by the occupant's feet to the beads 38 via the carpet 17, and does not rattle even if the occupant sitting on the rear seat is put on the foot. There is.

  Further, in the seat fixing structure, as shown in FIGS. 4, 6, and 8, the load is applied from the rearward extending fixing portion 23 of the seat 16 to the fastening pressure receiving portion (circular raised portion) 27 of the floor frame 14 as indicated by an arrow b1. Is input to the floor frame 14 via the bead bulging round portion 41 of the third bead 73 of the bead 38 (for example, the second frame corner round portion 37). ) Is transmitted almost directly as indicated by the arrow b2 and is not input to the top 33, so that the top 33 is not bent and the load is distributed to the second wall 35 continuing to the second frame corner radius 37. Can be made. Therefore, the heavier sheet 16 can be supported.

  Furthermore, as shown in FIGS. 4, 6, and 9, when a load is input from the rearward extending fixing portion 23 of the seat 16 to the fastening pressure receiving portion (circular raised portion) 27 as indicated by an arrow b <b> 1, the fastening pressure receiving portion The load is transmitted almost directly from the (circular raised portion) 27 to at least one of the floor frame 14 (for example, the first frame corner rounded portion 36) via the raised rounded portion 42 and input to the top portion 33 as shown by an arrow b3. Therefore, no deflection occurs in the top portion 33, and the load can be distributed to the first wall portion 34 continuous to the first frame corner radius portion 36. Therefore, the heavier sheet 16 can be supported.

  The seat fixing structure for an automobile of the present invention is suitable for an automobile.

  DESCRIPTION OF SYMBOLS 11 ... Automobile, 13 ... Underbody, 14 ... Floor frame, 15 ... Floor panel, 16 ... Seat, 16a ... Left front seat, 16b ... Right front seat, 17 ... Carpet, 18 ... Car compartment, 21 ... Seat leg , 22 ... seat leg rear part, 23 ... rear extension fixing part, 24 ... fixing part cover, 26 ... rear fastening part, 27 ... fastening pressure receiving part, 28 ... peripheral part, 31 ... edge of fixing part cover, 33 ... top 34, first wall portion, 35, second wall portion, 36, first frame corner radius portion, 37, second frame corner radius portion, 38, bead, 41, bead bulge radius portion, 42, raised radius , 43 ... outer peripheral part, 44 ... outer leg part, 45 ... inner leg part, 46 ... tunnel part, 47 ... another fastening pressure receiving part, 48 ... front part of underbody, 51 ... straight frame part, 52 ... side sill, 53 ... Bent frame part.

Claims (6)

In the vehicle seat fixing structure in which the seat leg is fastened to the underbody that forms the floor of the passenger compartment,
The leg portion has a rear extending fixing portion for fastening that extends rearward from the rear portion of the seat leg,
Providing a fixing part cover for covering the rear extension fixing part;
The underbody has a floor frame on which the leg is placed,
The floor frame includes: a fastening pressure receiving portion that contacts a rear fastening portion of the rear extension fixing portion; and a bead that protrudes upward at a peripheral portion connected to the fastening pressure receiving portion and on which an edge of the fixing portion cover is placed. ,
A seat fixing structure for an automobile, wherein a carpet laid on the underbody is sandwiched between the bead and the peripheral portion and an edge of the fixing portion cover. The floor frame has a groove shape and includes a top portion facing upward, and a first wall portion and a second wall portion continuous with the top portion,
2. The seat fixing structure for an automobile according to claim 1, wherein the fastening pressure receiving portion is a circular raised portion provided in the top portion and protruding upward in a circular shape from the top portion. The floor frame has a first frame corner radius portion formed by the top portion and the first wall portion, and a second frame corner radius portion formed by the top portion and the second wall portion. With
The bead has a bead bulging round portion that is continuous with the top portion, and the bead bulging round portion is continued to at least one of the first frame corner round portion and the second frame corner round portion. The vehicle seat fixing structure according to claim 1 or 2, wherein the vehicle seat fixing structure is provided.   The circular raised portion has a raised round portion that is continuous with the top portion, and the raised round portion is continuous with at least one of the first frame corner radius portion and the second frame corner radius portion. 4. The vehicle seat fixing structure according to claim 2, wherein the vehicle seat is fixed.   5. The seat fixing structure for an automobile according to claim 2, wherein a plurality of the beads extend radially outward from an outer peripheral portion of the circular raised portion. 6. The seats are left and right front seats,
The leg portion is composed of an outer leg portion and an inner leg portion provided with the rearward extension fixing portion, respectively.
The underbody includes a floor panel on which the floor frame is mounted, a tunnel portion formed by raising the floor panel between the left and right front seats, and another fastening pressure receiving portion provided in proximity to the tunnel portion. With
The floor frame extends in parallel to the tunnel portion from a front portion of the underbody to a lower portion of the front seat, and continues to the straight frame portion toward a side sill that forms left and right ends of the underbody. Extending the bent frame portion, and providing the fastening pressure receiving portion for fastening the rearward extending fixing portion of the outer leg portion to the bent frame portion;
The seat fixing structure for an automobile according to any one of claims 1 to 5, wherein the inner leg portion is fastened to the other fastening pressure receiving portion.

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