Child seat mounting structure

Abstract

To provide a child seat mounting structure capable of suppressing concentration of a load on a part of a floor panel when the load is applied to a child seat.SOLUTION: The child seat mounting structure 30 includes a child seat and a pair of brackets 50. The child seat mounting structure 30 mounts a child seat on a vehicle body by a pair of brackets 50. Each of the pair of brackets 50 includes an anchor member 51, a body member 52, and a fastening member 60. The body member 52 includes an installation portion 53 that is attached to the floor panel 10 while being in contact with the floor panel 10. The main body member 52 has a substantially gutter shape whose long side extends in the front-rear direction Y. The fastening member 60 fastens the bracket 50 to the floor panel 10. The main body member 52 has an edge portion 56 at an end portion located rearward in the front-rear direction Y. The edge portion 56 extends parallel to the vehicle width direction X.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] For example, Patent Document 1 discloses a bracket structure for fixing a child seat as a child seat mounting structure. The bracket structure for fixing a child seat fixes a child seat onto a seat in a vehicle such as an automobile. The bracket structure for fixing a child seat has a bracket. The bracket has a connecting portion as an anchor member and a mounting portion as a main body member. The connecting portion is made of a wire and is connected to the child seat. The mounting portion is attached to the floor, which serves as a floor panel of the vehicle. Of the ends of the mounting portion, the end having the connecting portion faces forward and upward of the vehicle and is located away from the floor.

[0003] The bracket has a protrusion formed by extending both ends of the wire downward. The protrusion protrudes toward the floor from the end of the mounting part that has the connecting part. When a lateral load acts on the child car seat due to a side collision with the vehicle, the child car seat fixing bracket structure prevents the child car seat from tilting by abutting the protrusion against the floor. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-219976 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the child seat fixing bracket structure of Patent Document 1, when the tilt of the child seat is to be suppressed, there is a risk that the load will be concentrated on one part of the floor panel when a load is generated on the child seat. [Means for solving the problem]

[0006] The child seat mounting structure for solving the above problem comprises a child seat mounted on a seat installed on a floor panel of a vehicle body, and a pair of brackets mounted on the floor panel rearward of the seat in the fore-and-aft direction of the vehicle body and aligned in the vehicle width direction, the bracket having an installation portion that is attached to and abuts against the floor panel, a roughly gutter-shaped main body member extending longitudinally in the fore-and-aft direction, fastening members that penetrate the installation portion and the floor panel and fasten the bracket to the floor panel, and an anchor member that is provided at the forward end of the main body member in the fore-and-aft direction and connects to the child seat, the child seat being mounted to the vehicle body by the pair of brackets, and the main body member having an edge at an end that is rearward of the fastening member in the fore-and-aft direction, the edge extending parallel to the vehicle width direction.

[0007] When a lateral load is applied to a child car seat in the vehicle width direction, a portion of the child car seat may lift off the seat. In one of the pair of brackets, a bracket connected to the portion by an anchor member generates a load in a direction that causes the bracket to lift off the floor panel. As a result, the main body member lifts off the floor panel, using the fastening member as a fulcrum, and the mounting portion displaces to press against the floor panel. At this time, a load is generated in the mounting portion of the bracket in a direction that presses the mounting portion against the floor panel. A bracket whose edge is parallel to the vehicle width direction can have a larger mounting area than, for example, a bracket that has the same length in the front-to-rear direction but whose edge is not parallel to the vehicle width direction. As a result, the floor panel can withstand the load applied from the mounting portion over a larger area than a bracket whose edge is not parallel to the vehicle width direction. As described above, the child car seat mounting structure can prevent the load from concentrating on a portion of the floor panel when a load is applied to the child car seat.

[0008] In the child seat mounting structure, the floor panel has a reinforcing plate that is fixed by welding at multiple welding points to the portion of the surface opposite to the surface on which at least one of the pair of brackets is provided that is aligned with the bracket in the thickness direction of the floor panel, and the fastening member penetrates the reinforcing plate in addition to the installation portion and the floor panel, and of the multiple welding points, multiple welding points that are positioned rearward of the fastening member in the fore-and-aft direction are positioned so that a straight line passing through the multiple welding points is parallel to the vehicle width direction, and the edge portion extends in the direction in which the multiple welding points positioned rearward of the fastening member are aligned.

[0009] In the child seat mounting structure, the edge portion may be located rearward in the front-rear direction from a plurality of the welding points that are located rearward in the front-rear direction from the fastening member. [Effects of the Invention]

[0010] According to the present invention, when a load is applied to a child seat, the load can be prevented from concentrating on one part of the floor panel. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a side view showing a child seat mounting structure. [Figure 2] FIG. 2 is an enlarged perspective view showing the child seat mounting structure. [Figure 3] FIG. 3 is a cross-sectional view showing the operation of the bracket. [Figure 4] FIG. 4 is a cross-sectional view showing the operation of the bracket. [Figure 5] FIG. 5 is a perspective view showing the bracket. [Figure 6] FIG. 6 is a perspective view showing a bracket in a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of a child car seat mounting structure will be described below. The child car seat mounting structure is provided on a body of a vehicle (not shown). The vehicle is, for example, an automobile. In the following description, "front," "rear," "left," "right," "up," and "down" refer to the positions of the vehicle driver facing forward in the direction of travel.

[0013] <Body> 1, a vehicle body (not shown) has a floor panel 10 and a seat 20 installed on the floor panel 10. The vehicle body also has a child seat mounting structure 30.

[0014] The floor panel 10 is plate-shaped and extends in the vehicle width direction X and the front-rear direction Y of the vehicle body, with the thickness direction being the up-down direction Z. The vehicle width direction X coincides with the left-right direction. In this embodiment, the thickness of the floor panel 10 is constant along the vehicle width direction X. The thickness of the floor panel 10 may vary along the vehicle width direction X. The vehicle body has a step portion 12 that rises toward the rear floor 11 behind the floor panel 10. The floor panel 10 has an upper floor surface 13 and a lower floor surface 14. The upper floor surface 13 is the surface of the floor panel 10 that faces upward. The lower floor surface 14 is the surface of the floor panel 10 that faces downward. The lower floor surface 14 is the surface opposite the upper floor surface 13 in the thickness direction of the floor panel 10.

[0015] The seat 20 is provided on the floor upper surface 13. The seat 20 is provided in a rearward portion of the floor panel 10. In this embodiment, the seat 20 is a rear seat. The seat 20 has a seat cushion 21 including a seat surface, a seat back 22 that forms a backrest, and a headrest 23 provided at the upper end of the seat back 22.

[0016] The seat 20 has a pair of insertion openings 20a defined by the seat cushion 21 and the seat back 22. The insertion openings 20a are defined by the lower end of the seat back 22. The pair of insertion openings 20a are aligned in the vehicle width direction X. The seat 20 has two pairs of insertion openings 20a. Of the two pairs of insertion openings 20a, the insertion openings 20a constituting one pair are located on the right side of the seat 20, and the insertion openings 20a constituting the other pair are located on the left side of the seat 20. In other words, the seat 20 is provided with four insertion openings 20a, and the four insertion openings 20a are aligned in the vehicle width direction X. In FIG. 1, only one of the four insertion openings 20a is shown.

[0017] <Overall view of child seat mounting structure> The child seat mounting structure 30 includes a child seat 40, a pair of brackets 50, a fastening member 60, and a reinforcing plate 70.

[0018] The child seat 40 has a portion indicated by a two-dot chain line in FIG. 1 and a connection portion 41 indicated by a solid line in FIG. 1. The child seat 40 is attached to the seat 20. That is, the child seat 40 is attached to the seat 20 which is attached to the floor panel 10 of the vehicle body. The child seat 40 is attached to the seat 20 so as to contact the seat surface of the seat cushion 21 and the seat back 22. The child seat 40 has a pair of connection portions 41. The child seat 40 has connection portions 41 at portions facing each of the pair of insertion openings 20a. Only one of the pair of connection portions 41 is shown in FIG. 1. The child seat 40 is attached to the seat 20 by inserting each of the pair of connection portions 41 into the corresponding insertion opening 20a.

[0019] In this embodiment, one child seat 40 is provided on the seat 20. The portion of the seat 20 where the child seat 40 is provided is either on the right side or the left side in the vehicle width direction X. The child seat 40 may be provided on either the right side or the left side of the seat 20. In the following explanation, we will consider a case where the child seat 40 is provided on the left side of the seat 20. Note that the following explanation will also apply to a case where the child seat 40 is provided on the right side of the seat 20 by changing "left" or "right" in the explanation as appropriate.

[0020] <Reinforcing plate> As shown in FIGS. 1 and 2, the reinforcing plate 70 is plate-shaped. The reinforcing plate 70 is fixed to the floor panel 10. The reinforcing plate 70 is provided on the floor underside 14. The reinforcing plate 70 is provided on the floor underside 14 at a position aligned with the bracket 50 in the up-down direction Z, with the floor panel 10 sandwiched between them. The bracket 50 will be described in detail later. The reinforcing plate 70 is fixed to a portion of the floor panel 10, aligned with the bracket 50 in the thickness direction of the floor panel 10, on the surface opposite to the surface on which at least one of the pair of brackets 50 is provided. As shown in FIG. 2, in this embodiment, the reinforcing plate 70 is provided on the floor panel 10 for each bracket 50. In other words, a pair of reinforcing plates 70 is provided on the floor panel 10.

[0021] 1 and 2, the reinforcing plate 70 is fixed by welding at a plurality of welding points P. In other words, the reinforcing plate 70 and the floor panel 10 are welded at a plurality of welding points P. More specifically, the reinforcing plate 70 and the floor panel 10 are joined by spot welding at the welding points P.

[0022] The plurality of welding points P includes a plurality of first points P1 and a plurality of second points P2 located behind the first points P1. As shown in Fig. 2, in this embodiment, the plurality of welding points P includes two second points P2.

[0023] The two second locations P2 are aligned in the vehicle width direction X. In FIG. 2 , a straight line L passing through the center of each second location P2 is indicated by a dashed line. The straight line L extends parallel to the vehicle width direction X. In other words, of the multiple welding locations P, the multiple welding locations P that are arranged rearward of the fastening member 60 in the front-rear direction Y are arranged such that the straight line L passing through the multiple welding locations P is parallel to the vehicle width direction X.

[0024] <bracket> 1, the pair of brackets 50 are provided on the floor panel 10 in a portion rearward of the seat 20 in the front-rear direction Y of the vehicle body. The pair of brackets 50 are joined to the floor panel 10 by fastening members 60.

[0025] The pair of brackets 50 are provided at positions aligned with the child seat 40 in the front-rear direction Y. In this embodiment, the pair of brackets 50 are provided on a portion of the floor panel 10 that is closer to the left in the vehicle width direction X.

[0026] As shown in Fig. 2, the pair of brackets 50 are aligned in the vehicle width direction X. One of the pair of brackets 50 is provided on the left side of the floor panel 10, and the other bracket 50 is provided closer to the center of the floor panel 10 in the vehicle width direction X than the one bracket 50. The pair of brackets 50 are arranged to face the insertion opening 20a shown in Fig. 1 in the front-rear direction Y. In other words, the pair of brackets 50 are aligned in the front-rear direction Y with one child seat 40, with the seat 20 interposed therebetween.

[0027] The bracket 50 has an anchor member 51 and a main body member 52. The bracket 50 is formed by attaching the anchor member 51 to the main body member 52. The bracket 50 extends elongatedly in the front-to-rear direction Y. The bracket 50 has a first end and a second end in the front-to-rear direction Y. The first end faces forward and upward. The second end faces rearward. A portion of the bracket 50 closer to the first end is made up of the anchor member 51. A central portion of the bracket 50 and a portion closer to the second end in the front-to-rear direction Y are made up of the main body member 52.

[0028] The bracket 50 has an anchor member 51 inserted into the insertion opening 20a shown in Fig. 1. More specifically, the bracket 50 has the anchor member 51 inserted into the insertion opening 20a from the rear in the front-rear direction Y. The bracket 50 holds the anchor member 51 inside the insertion opening 20a.

[0029] <Anchor material> The anchor member 51 is a linear member processed into a U-shape. The anchor member 51 is formed, for example, by bending a wire with a circular cross section into a U-shape. The anchor member 51 is provided at the end of the main body member 52 that is located forward in the front-rear direction Y. The anchor member 51 is provided on the main body member 52 so that a gap 51a is defined between the anchor member 51 and the main body member 52. In other words, the anchor member 51 forms a part of the frame of the gap 51a.

[0030] The anchor member 51 is connected to the connecting portion 51b at one end in the vehicle width direction X. The connecting portion 51b is a linear member extending in the vehicle width direction X. The connecting portion 51b extends between the pair of brackets 50, from one bracket 50 to the other bracket 50. More specifically, the connecting portion 51b is connected to the anchor member 51 of one bracket 50 at a first end, and is connected to the anchor member 51 of the other bracket 50 at a second end. In other words, the pair of brackets 50 are connected by the connecting portion 51b.

[0031] In this embodiment, the anchor member 51 and the connecting portion 51b of each of the pair of brackets 50 are configured from a single linear member. In other words, the two anchor members 51 and the connecting portion 51b are formed by bending a single linear member. More specifically, the two anchor members 51 are formed by bending a portion of the linear member extending in the vehicle width direction X, near the first end and a portion of the linear member near the second end, into a U-shape. Furthermore, the connecting portion 51b is formed in a portion of the linear member between the two U-shaped bent portions.

[0032] The anchor member 51 is located inside the insertion opening 20a shown in Fig. 1. The anchor member 51 is connected to the connection portion 41 inside the insertion opening 20a. In other words, the anchor member 51 is connected to the child seat 40. More specifically, the anchor member 51 inserted into the insertion opening 20a from the rear is connected to the connection portion 41 inserted into the insertion opening 20a from the front.

[0033] <Main body parts> The main body member 52 is generally gutter-shaped and extends longitudinally in the front-rear direction Y. The main body member 52 has an installation portion 53 and a holding portion 54 aligned in the front-rear direction Y.

[0034] The installation portion 53 is a portion of the main body member 52 that is closer to the rear in the front-to-rear direction Y. In other words, the installation portion 53 is a portion closer to the second end of the bracket 50. The installation portion 53 is a plate-shaped portion of the main body member 52 whose thickness direction is the up-down direction Z. The installation portion 53 is in surface contact with the floor panel 10.

[0035] The installation portion 53 has a through-hole (not shown), which penetrates the installation portion 53 in the thickness direction. A through-hole (not shown), which penetrates the floor panel 10 in the thickness direction, is provided in a portion of the floor panel 10 that is in surface contact with the installation portion 53. The main body member 52 is arranged so that the through-hole of the installation portion 53 and the through-hole of the floor panel 10 are aligned in the vertical direction Z.

[0036] The fastening member 60 is inserted through the through hole of the installation portion 53, the through hole of the floor panel 10, and the through hole of the reinforcing plate 70. The fastening member 60 penetrates the installation portion 53, the floor panel 10, and the reinforcing plate 70. In other words, the fastening member 60 penetrates the installation portion 53, the floor panel 10, and the reinforcing plate 70. The through hole of the reinforcing plate 70 is provided at a position in the vertical direction Z that is aligned with the through hole of the installation portion 53 and the through hole of the floor panel 10 of the reinforcing plate 70. The installation portion 53 is attached while abutting against the floor panel 10. In other words, the fastening member 60 joins the installation portion 53 and the floor panel 10.

[0037] Of the multiple welding points P described above, the multiple first points P1 are located forward of the fastening member 60, and the multiple second points P2 are located rearward of the fastening member 60. Of the multiple welding points P, the multiple welding points P that are located rearward of the fastening member 60 in the longitudinal direction Y are arranged so that a straight line L passing through the multiple welding points P is parallel to the vehicle width direction X.

[0038] The main body member 52 has a retaining portion 54. The retaining portion 54 is a portion of the main body member 52 that is closer to the front of the installation portion 53 in the front-rear direction Y. A rear end of the retaining portion 54 is connected to a front end of the installation portion 53. In FIG. 2, the boundary between the retaining portion 54 and the installation portion 53 is indicated by a two-dot chain line. The retaining portion 54 forms a central portion of the bracket 50 in the front-rear direction Y. The retaining portion 54 is also a portion of the main body member 52 that is between the anchor member 51 and the installation portion 53 in the front-rear direction Y. The retaining portion 54 is a plate-shaped portion of the main body member 52 that is not in contact with the floor panel 10, and whose thickness direction is perpendicular to the vehicle width direction X. The retaining portion 54 connects the anchor member 51 and the installation portion 53 and is curved with respect to the installation portion 53. Therefore, the thickness direction of the holding portion 54 inclines in a direction that changes from the vertical direction Z to the front-rear direction Y as the holding portion 54 moves from the rearward portion to the forward portion.

[0039] The holding portion 54 holds the anchor member 51. More specifically, the holding portion 54 holds the anchor member 51 at an end portion opposite in the front-rear direction Y from the end portion connected to the installation portion 53. The holding portion 54 is inclined so that the end portion of the main body member 52 that holds the anchor member 51 is positioned relative to the insertion opening 20a shown in FIG. 1 so that the anchor member 51 can be inserted into the insertion opening 20a. In other words, the holding portion 54 is oriented from the front end portion of the installation portion 53 toward the insertion opening 20a.

[0040] The main body member 52 has a pair of side portions 55. The side portions 55 are portions of the main body member 52 whose thickness direction is the vehicle width direction X. The side portions 55 extend from both end portions of the installation portion 53 in the vehicle width direction X. The side portions 55 also extend from both end portions of the holding portion 54 in the vehicle width direction X. The side portions 55 stand upright relative to the installation portion 53 in a direction away from the floor panel 10. The side portions 55 also stand upright relative to the holding portion 54 in a direction perpendicular to the vehicle width direction X and toward the rear. As described above, the main body member 52 is a generally gutter-shaped member whose bottoms are the installation portion 53 and the holding portion 54.

[0041] The thickness direction of the lower portion of the side portion 55 changes from the vehicle width direction X to the up-down direction Z as the side portion 55 approaches the installation portion 53 and the holding portion 54. In other words, the portion of the side portion 55 closer to the installation portion 53 and the holding portion 54 curves in the vehicle width direction X in a direction approaching the installation portion 53 and the holding portion 54. In other words, the side portion 55 is connected to the installation portion 53 while curved in the vehicle width direction X.

[0042] The side portions 55 extend over the entire main body member 52 in the longitudinal direction Y. In other words, the length of the side portions 55 in the longitudinal direction Y is the same as the combined length of the installation portion 53 and the holding portion 54 in the longitudinal direction Y. The rear ends of the side portions 55 are aligned with the rear ends of the installation portion 53 in the vehicle width direction X. Furthermore, the front ends of the side portions 55 are aligned with the front ends of the holding portions 54 in the vehicle width direction X. In other words, the rear end of the main body member 52 is composed of the installation portion 53 and the pair of side portions 55. Furthermore, the front end of the main body member 52 is composed of the holding portion 54 and the pair of side portions 55. Hereinafter, the front end of the main body member 52 will be referred to as a first main body end portion 521, and the rear end will be referred to as a second main body end portion 522. The main body member 52 is connected to the anchor member 51 at the first main body end portion 521.

[0043] <Edge> The main body member 52 has an edge portion 56 and a side edge portion 57 at the second main body end portion 522. The main body member 52 has the edge portion 56 at an end portion located rearward of the fastening member 60 in the longitudinal direction Y. The edge portion 56 is an edge located at a portion of the edge of the main body member 52 at the second main body end portion 522 that is formed by the installation portion 53. The edge portion 56 extends parallel to the vehicle width direction X. Furthermore, the straight line L passing through the plurality of second locations P2 is parallel to the edge portion 56. In other words, the edge portion 56 extends in a direction in which the plurality of welding locations P located rearward of the fastening member 60 are aligned.

[0044] The edge portion 56 is located between the fastening member 60 and a straight line L passing through the plurality of second points P2 in the front-rear direction Y. The installation portion 53 has the edge portion 56 at a position rearward and away from the fastening member 60. That is, the installation portion 53 has a certain width rearward of the fastening member 60 in the front-rear direction Y. The dimension of the edge portion 56 in the vehicle width direction X is shorter than the distance between the plurality of second points P2 in the vehicle width direction X. That is, the edge portion 56 is located between the plurality of second points P2 in the vehicle width direction X. In other words, the bracket 50 is installed on the floor panel 10 so that the edge portion 56 is located between the second points P2 in the vehicle width direction X.

[0045] The side edge portions 57 are edges that the main body member 52 has at the second main body end portion 522, and are located at portions that are formed by each of the pair of side portions 55. The pair of side edge portions 57 extend upward from both ends of the edge portion 56 in the vehicle width direction X. The side edge portions 57 extend in the up-down direction Z.

[0046] In the child seat mounting structure 30, the child seat 40 is attached to the vehicle body by a pair of brackets 50. In other words, in the child seat mounting structure 30, the child seat 40 is connected to the pair of brackets 50 by connecting portions 41, and is attached to the floor panel 10 by the pair of brackets 50. In this way, the child seat mounting structure 30 restricts the child seat 40 from moving relative to the seat 20. More specifically, when a load is applied to the child seat 40, the child seat mounting structure 30 restricts the child seat 40 from moving relatively in the direction of the load.

[0047] <Function of child seat mounting structure> The operation of the child seat mounting structure 30 when a lateral load acts on the child seat 40 will be described. Specifically, the operation of the child seat mounting structure 30 when a lateral load acts on the child seat 40 from left to right in the vehicle width direction X will be described. The lateral load may be generated, for example, by a side collision with the left side of the vehicle body. Since the child seat 40 is restricted from moving relative to the seat 20, it attempts to rotate in response to the lateral load around an axis extending in the front-rear direction Y. In other words, a torque resulting from the lateral load acts on the child seat 40. Hereinafter, we will consider a case where the lateral load acts above the center of gravity of the child seat 40. Therefore, the torque resulting from the lateral load causes the child seat 40 to rotate so that the left portion lifts off the seat 20 and the right portion sinks into the seat 20. The following description also applies to the case where a lateral load acts below the center of gravity of the child car seat 40 by changing "left" and "right" appropriately.

[0048] 3 and 4 show the movement of the pair of brackets 50 when a lateral load acts on the child seat 40. In FIGS. 3 and 4, the brackets 50 before the lateral load acts on the child seat 40 are shown by solid lines, and the brackets 50 after the lateral load acts on the child seat 40 are shown by two-dot chain lines. The brackets 50 move with the fastening members 60 as fulcrums. When the brackets 50 move, the floor panel 10 and the reinforcing plate 70 are slightly deformed in association with this movement. The deformed floor panel 10 and reinforcing plate 70 are not shown in FIGS. 3 and 4.

[0049] Figure 3 shows the operation of the bracket 50 connected to the left-hand portion of the child seat 40. In other words, the bracket 50 shown in Figure 3 is connected to the portion of the child seat 40 that is lifted up due to a lateral load.

[0050] As the child seat 40 rises, the anchor member 51 is lifted upward by the connecting portion 41. When the anchor member 51 is lifted upward, the installation portion 53 presses the floor panel 10 downward. More specifically, the main body member 52 is displaced such that the holding portion 54 rises from the floor panel 10 and the installation portion 53 presses the floor panel 10. In other words, when a portion of the child seat 40 rises, the installation portion 53 of the bracket 50 connected to that portion presses the floor panel 10.

[0051] The load generated on the floor panel 10 when the installation portion 53 presses against the floor panel 10 is distributed across the floor panel 10 in accordance with the area of ​​surface contact between the installation portion 53 and the floor panel 10. Specifically, the floor panel 10 is pressed from the area of ​​the portion of the main body member 52 in the front-to-rear direction Y, from the position indicated by the two-dot chain line in Figure 2 to the edge portion 56. The load is then distributed across the portion of the floor panel 10 that is in surface contact with that portion.

[0052] Figure 4 shows the operation of the bracket 50 connected to the right-hand portion of the child seat 40. In other words, the bracket 50 shown in Figure 4 is connected to a portion of the child seat 40 that sinks due to a lateral load. As the child seat 40 sinks, the anchor member 51 is pressed downward by the connection portion 41. When the anchor member 51 is pressed downward, the portion of the installation portion 53 that is rearward of the fastening member 60 moves away from the floor panel 10. At this time, the bracket 50 is in surface contact with the floor panel 10 due to the curved portion of the holding portion 54.

[0053] [Effects of this embodiment] The effects and functions of this embodiment will be described below. (1) In the bracket 50 connected to the portion of the child seat 40 that is lifted up due to a lateral load, a load is generated in the anchor member 51 in a direction that causes the bracket 50 to lift up from the floor panel 10. As a result, the main body member 52 of the bracket 50 lifts up from the floor panel 10, with the fastening member 60 as a fulcrum, and is displaced so that the installation portion 53 presses against the floor panel 10. At this time, a load is generated in the installation portion 53 of the bracket 50 in a direction that presses the installation portion 53 against the floor panel 10.

[0054] The bracket 50 can have a larger area for the installation portion 53 than a bracket 50 having the same length in the longitudinal direction Y but whose edge portion 56 is not parallel to the vehicle width direction X. An example of a case in which the edge portion 56 is not parallel to the vehicle width direction X is when the bracket 50 has a comparative edge portion 58, as shown by the dashed-dotted line in FIG. 5 . Compared to a bracket 50 having the comparative edge portion 58 at its rear end, the bracket 50 can have a larger contact area between the installation portion 53 and the floor panel 10 by the area of ​​the portion rearward of the dashed-dotted line in the longitudinal direction Y. As a result, the floor panel 10 can withstand a load applied from the installation portion 53 over a larger area than a bracket 50 having the comparative edge portion 58. As described above, the child seat mounting structure 30 can prevent a load from concentrating on one part of the floor panel 10 when a load is applied to the child seat 40.

[0055] (2) When the retaining portion 54 is not curved relative to the floor panel 10, the bracket 50 has a corner between the retaining portion 54 and the installation portion 53. Compared to when a corner is present between the retaining portion 54 and the installation portion 53, the bracket 50 can increase the contact area with the floor panel 10 even when the anchor member 51 is pressed down by a side impact load. In other words, compared to when a corner is present between the retaining portion 54 and the installation portion 53, the bracket 50 can prevent the load from concentrating on the floor panel 10.

[0056] (3) The thickness direction of the side portions 55 is a direction intersecting the thickness direction of the installation portion 53. Therefore, even if a load that would bend the installation portion 53 acts on the main body member 52, the side portions 55 can prevent the installation portion 53 from bending due to the load. In other words, by having the pair of side portions 55, the bracket 50 can have improved durability compared to, for example, a case in which the main body member 52 is composed of only the installation portion 53 and the holding portion 54.

[0057] (4) When the side portion 55 is curved in the vehicle width direction X and is not connected to the installation portion 53, the bracket 50 has a corner between the side portion 55 and the installation portion 53. Even if the bracket 50 is slightly tilted in the vehicle width direction X relative to the floor panel 10 due to the load of the child seat 40, the bracket 50 can have a larger contact area with the floor panel 10 than when it has a corner. In other words, compared to when the bracket 50 has a corner between the side portion 55 and the installation portion 53, it can suppress deformation of the installation portion 53 and suppress concentration of the load on the floor panel 10.

[0058] [Example of change] The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0059] The side portion 55 may be curved in the vehicle width direction X and may not be connected to the installation portion 53. In this case, the bracket 50 may have a corner between the side portion 55 and the installation portion 53.

[0060] The holding portion 54 does not have to be curved relative to the installation portion 53. In this case, the bracket 50 may have a corner between the holding portion 54 and the installation portion 53. The main body member 52 does not have to have the holding portion 54. In other words, the main body member 52 may be composed of the installation portion 53 and a pair of side portions 55. In this case, the anchor member 51 is attached to the front end of the installation portion 53. In short, it is sufficient that the main body member 52 is configured so as to be able to hold the anchor member 51 at the end facing the child seat 40 in the front-rear direction Y.

[0061] The length of the installation portion 53 in the front-rear direction Y is not limited to that described in the embodiment. For example, as shown in Fig. 6 , the installation portion 53 may have an edge portion 56 rearward of the straight line L in the front-rear direction Y. In this case, the edge portion 56 is located rearward in the front-rear direction Y of the multiple welding points P that are located rearward of the fastening member 60 in the front-rear direction Y.

[0062] Alternatively, the installation portion 53 may have an edge portion 56 on a straight line L in the front-rear direction Y. The straight line L does not have to be parallel to the vehicle width direction X. Of the multiple welding points P, the number of second points P2 does not have to be two. The number of second points P2 is not limited to the number in the embodiment. Furthermore, the multiple welding points P and the arrangement of the second points P2 are not limited to the embodiment. The multiple welding points P may be provided in a number and arrangement that allows the reinforcing plate 70 to be fixed to the floor panel 10.

[0063] A reinforcing plate 70 does not have to be provided for each bracket 50. In other words, two brackets 50 may be provided for one reinforcing plate 70. The reinforcing plate 70 may be fixed to the floor panel 10 so as to be aligned in the up-down direction Z with one of the pair of brackets 50. Preferably, the reinforcing plate 70 is fixed to the floor panel 10 so as to be aligned in the up-down direction Z with one of the pair of brackets 50 that is located on the inner side in the vehicle width direction X.

[0064] In this case, the thickness of floor panel 10 varies along the vehicle width direction X. Specifically, floor panel 10 is thin in the center portion of the vehicle body in the vehicle width direction X, and is thicker in the portions outside the center portion. More specifically, floor panel 10 is constructed by spot welding thick steel plates to both ends of a thin steel plate in the vehicle width direction X. Of the pair of brackets 50, reinforcing plate 70 is provided so as to be aligned in the up-down direction Z with bracket 50 provided in the thin portion of floor panel 10.

[0065] The child seat mounting structure 30 does not have to include the reinforcing plate 70. The vehicle body may be provided with a plurality of child seat mounting structures 30. For example, when a plurality of child seats 40 are mounted on the vehicle body, a child seat mounting structure 30 may be provided for each child seat 40.

[0066] The seat 20 is not limited to a rear seat. The seat 20 may be any seat that can accommodate a child seat 40. The pair of brackets 50 do not have to be connected by the connecting portion 51b. In this case, the pair of brackets 50 have the anchor member 51 for each main body member 52, and the pair of anchor members 51 are separate.

[0067] [Note] The technical ideas that can be understood from the above-described embodiment and modifications will be described below. <Supplementary Note 1> The main body member has a holding portion that holds the anchor member, The retaining portion is a portion of the main body member between the anchor member and the installation portion in the fore-and-aft direction, and is a child seat mounting structure that connects the anchor member and the installation portion while curved toward the installation portion.

[0068] <Supplementary Note 2> The main body member has a pair of side portions extending from both ends of the installation portion in the vehicle width direction and erected in a direction away from the floor panel relative to the installation portion, The side portion is curved in the vehicle width direction and connected to the installation portion. [Explanation of symbols]

[0069] 10...floor panel, 20...seat, 30...child seat mounting structure, 40...child seat, 50...bracket, 51...anchor member, 52...main body member, 53...installation portion, 56...edge portion, 60...fastening member, 70...reinforcing plate, L...straight line, P...welding point, X...vehicle width direction, Y...front-rear direction.

Claims

1. a child seat provided for a seat installed on a floor panel of the vehicle body; a pair of brackets provided on the floor panel at a portion rearward of the seat in the front-rear direction of the vehicle body and aligned in the vehicle width direction; The bracket is a substantially gutter-shaped main body member having an installation portion attached to the floor panel while abutting against the floor panel and extending longitudinally in the front-rear direction; a fastening member that penetrates the installation portion and the floor panel and fastens the bracket to the floor panel; an anchor member provided at a front end of the main body member in the front-rear direction and connected to the child car seat, The child seat mounting structure is configured so that the child seat is mounted to the vehicle body by a pair of brackets, the main body member has an edge portion at an end portion located rearward of the fastening member in the front-rear direction, A child seat mounting structure characterized in that the edge portion extends parallel to the vehicle width direction.

2. The floor panel has a reinforcing plate that is fixed by welding at a plurality of welding points to a portion of the floor panel that is aligned with the bracket in the thickness direction of the floor panel on the opposite side of the surface on which at least one of the pair of brackets is provided, the fastening member penetrates the reinforcing plate in addition to the installation portion and the floor panel, Among the plurality of welded points, a plurality of welded points that are arranged rearward of the fastening member in the front-rear direction are arranged such that a straight line passing through the plurality of welded points is parallel to the vehicle width direction, 2. The child seat mounting structure according to claim 1, wherein the edge portion extends in a direction in which the plurality of welding points arranged rearward of the fastening member are aligned.

3. 3. The child seat mounting structure according to claim 2, wherein the edge portion is located rearward in the front-rear direction relative to the plurality of welding points that are arranged rearward in the front-rear direction relative to the fastening member.

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