Child seat mounting structure

Abstract

To reduce a defect rate in the inspection of an anchor which is inserted into a slit of a connector part of a child seat and provided at a vehicle.SOLUTION: A child seat attachment structure 50 includes: an anchor 110 which is formed by a wire having a U shape in a plan view which is open at the vehicle rear side and in which a front end part 112 formed along a vehicle width direction is inserted into a slit of a connector part of a child seat; a joint plate 120 to which a rear end of the anchor 110 is joined; a fastening part 210 which is fixed to the vehicle body side and in which the joint plate 120 is fastened to an upper surface 210A by a bolt 150; and a first ring member 250 which is sandwiched between a head 152 of the bolt 150 and the joint plate 120 and may elastically deform in a thickness direction in which the bolt 150 is inserted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent Document 1 discloses a technology relating to a child seat mounting structure for mounting a child seat on a vehicle such as an automobile. In this prior art, a child seat mounting tool is constructed by fixing a plurality of anchors to which a child seat can be attached to a bracket in a predetermined positional relationship, and the child seat mounting tool is fastened together with the seat belt anchor to the stop point of the existing seat belt anchor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-213208 Summary of the Invention [Problem to be solved by the invention]

[0004] All anchors installed in vehicles that are inserted into the slits in the connector part of ISOFIX-compatible child seats are inspected using an inspection jig specified by the ISOFIX standard. Specifically, an inspection jig modeled after a child seat is attached, and the anchor is checked to see if it is inserted all the way into the inspection slit of the inspection jig. If the anchor cannot be inserted all the way into the inspection slit of the inspection jig, the vehicle fails the inspection.

[0005] Based on the above facts, an object of the present invention is to reduce the NG rate in the inspection of anchors provided in a vehicle that are inserted into slits in the connector portion of a child car seat. [Means for solving the problem]

[0006] The first aspect is a child seat mounting structure comprising: an anchor composed of a wire with a U-shaped circular cross section in a plan view that opens toward the rear of the vehicle, and whose front end along the vehicle width direction is inserted into a slit in the connector part of the child seat; a joint to which the rear end of the anchor is joined; a fastening part fixed to the vehicle body and to which the joint is fastened with a bolt; and a first ring member sandwiched between the head of the bolt and the joint and elastically deformable in the thickness direction through which the bolt passes.

[0007] In the child seat mounting structure of the first aspect, the first ring member, which is elastically deformable in the thickness direction, is sandwiched between the bolt head and the joint, so the joint moves up and down at the fastening point of the bolt, and therefore the anchor rotates so that the front end moves up and down around the fastening point.

[0008] Therefore, even if the front end of the anchor hits the upper or lower corner on the opening side of the inspection slit, the front end of the anchor will move downward or upward and be inserted into the inspection slit.Alternatively, even if it cannot be inserted into the inspection slit, the front end of the anchor can be adjusted to a range where it can be inserted into the inspection slit by readjusting the tightening amount of the bolt.This reduces the NG rate in anchor inspections.

[0009] A second aspect is the child seat mounting structure according to the first aspect, further comprising a second ring member sandwiched between the joint portion and the fastening portion and elastically deformable in the thickness direction through which the bolt is inserted.

[0010] In the child seat mounting structure of the second aspect, the second ring member, which is elastically deformable in the thickness direction, is sandwiched between the joint portion and the fastening portion, allowing the front end of the anchor to move up and down more easily. This makes it easier for the front end of the anchor to be inserted into the inspection slit, further reducing the NG rate in anchor inspections.

[0011] A third aspect is a child seat mounting structure according to the first aspect, in which the joint portion and the fastening portion are plate-shaped, and the joint portion and the fastening portion are fastened together with their plate surfaces in contact with each other.

[0012] In the third embodiment of the child seat mounting structure, the joint and fastening portions are fastened with their plate surfaces in contact with each other, so that the impact force input to the anchor in the event of a vehicle collision with a child seat attached is effectively transmitted and dispersed to the vehicle body via the joint and fastening portions, which are in surface contact.

[0013] A fourth aspect is the child seat mounting structure according to any one of the first to third aspects, wherein a rotation prevention mechanism is provided to prevent the joint from rotating around the bolt.

[0014] In the child seat mounting structure of the fourth aspect, the rotation prevention mechanism prevents the joint from rotating around the bolt.

[0015] A fifth aspect is a child seat mounting structure described in any one of the first to fourth aspects, wherein the anchor is configured so that, during inspection with an inspection jig simulating the child seat, the upper half of the front end portion of the anchor abuts the upper corner on the opening side of the inspection slit in the inspection jig into which the front end portion of the anchor is inserted.

[0016] In the child seat mounting structure of the fifth aspect, the upper half of the front end of the anchor is set to abut the upper corner on the opening side of the inspection slit in the inspection jig, so that the front end of the anchor abuts the upper corner on the opening side of the inspection slit, causing the front end to move downward and be inserted into the inspection slit. [Effects of the Invention]

[0017] According to the present invention, it is possible to reduce the NG rate in the inspection of anchors provided in a vehicle that are inserted into slits in the connector portion of a child car seat. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a child seat mounting structure according to an embodiment of the present invention, viewed obliquely from the front side. [Figure 2] 1 is a perspective view of a child seat mounting structure according to an embodiment of the present invention, seen from an obliquely rear side. [Figure 3] (A) is a plan view of the inspection jig, and (B) is an enlarged side view of part 3B of (A). [Figure 4] 10 is an explanatory diagram illustrating the positional relationship between the inspection slit of the inspection connector portion of the inspection jig and the front end portion of the anchor. FIG. [Figure 5] FIG. 5A is a perspective view showing a child seat, a rear seat, and an anchor, and FIG. 5B is an enlarged perspective view of part 5B of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] <Embodiment> A child seat mounting structure according to one embodiment of the present invention will now be described. In the drawings, the arrow FR indicates the front side of the vehicle, and the arrow UP indicates the upper side of the vehicle. Furthermore, unless otherwise specified, when the terms "front-rear," "up-down," and "left-right" are used in the following description, "front-rear" refers to the front-rear direction of the vehicle, "up-down" refers to the up-down direction of the vehicle, and "left-right" refers to the left-right direction of the vehicle width. Furthermore, the vehicle width direction may sometimes simply be referred to as the width direction.

[0020] (structure) First, the specific structure of the child seat mounting structure 50 will be described.

[0021] The child seat mounting structure 50 of this embodiment shown in Figure 1 is composed of an anchor 110, a joining plate 120 as an example of a joining portion, a fastening portion 210 of a fastening bracket 200, a first ring member 250, and a second ring member 260.

[0022] The child seat mounting structure 50 of this embodiment is applied to a rear seat 10 of a vehicle shown in Fig. 5(A). The rear seat 10 according to this embodiment is composed mainly of a seat cushion 14 on which an occupant sits, a seat back 12 that supports the back of the occupant seated on the seat cushion 14, and a headrest (not shown) that is attached to the upper end of the seat back 12 and supports the head of the occupant. In addition, an anchor unit 100 (see also Fig. 1) equipped with anchors 110 for mounting a child seat 40 that complies with ISOFIX (international standard) is provided at the lower rear of the rear seat 10.

[0023] The anchor 110 shown in Fig. 1 is an ISOFIX anchor compatible with ISOFIX. Two anchor units 100 are provided spaced apart in the width direction of the vehicle. As shown in Figs. 5(A) and 5(B), the anchor 110 is inclined slightly upward toward the front of the vehicle. However, in figures other than Figs. 5(A) and 5(B), the anchor 110 is illustrated as extending along the front of the vehicle, and may be described in this manner for convenience.

[0024] 5(A) and 5(B), the anchor 110 is exposed to the front of the seat from between the seat cushion 14 and the seat back 12. In this embodiment, as shown in FIG. 5(B), a cover member 20 is provided to cover the rear side of the anchor unit 100, and the front side of the anchor 110 protrudes from the cover member 20. The anchor 110 is then inserted into a slit 44 at the rear end of a connector portion 42 of an ISOFIX-compatible child seat 40, thereby attaching the child seat 40.

[0025] The configuration in which the anchor 110 is exposed between the seat cushion 14 and the seat back 12 in the rear seat 10 shown in FIG. 5 is just one example, and the present invention is not limited to this.

[0026] 1 and 2, the anchor unit 100 is configured to include an anchor 110 and a joining plate 120. The anchor 110 is configured of a metal wire having a circular cross section perpendicular to the axial direction, and is U-shaped in plan view. The opening side of the U-shaped anchor 110 in plan view faces the rear of the vehicle.

[0027] A rear end 114 on the opening side of the anchor 110 is joined by welding or the like to an upper surface 120A of a joining plate 120 that is rectangular in plan view. In addition, a front end 112 that forms the middle part of the U-shape of the anchor 110 has an axial direction that is aligned with the vehicle width direction.

[0028] 1 and 2, a joining plate 120, which is an example of a joining portion, is made of sheet metal. A fastening hole 124 is formed in the center of the joining plate 120. The joining plate 120 of the anchor unit 100 is fastened to a fastening bracket 200 with a shoulder bolt 150. Hereinafter, the "shoulder bolt 150" will be simply referred to as the "bolt 150."

[0029] As shown in FIG. 2, in this embodiment, a claw portion 122 is formed at the center in the width direction of the rear end portion 121 of the joining plate 120, protruding downward as an example of a rotation prevention mechanism.

[0030] 1 and 2, the fastening bracket 200 is fixed to a seat frame 30 of the rear seat 10 (see FIG. 5). The seat frame 30 in this embodiment is a pipe-shaped member arranged along the vehicle width direction, and is fixed to the vehicle floor.

[0031] In this embodiment, the fastening bracket 200 is fixed to the seat frame 30, but this is not limitative. The fastening bracket 200 may be fixed directly to the vehicle body, such as the vehicle floor, or to a member fixed to the vehicle body.

[0032] The fastening bracket 200 is made of sheet metal with a hat-shaped cross section, and a flange portion 202 extending outward in the width direction is joined to the seat frame 30 by welding or the like. Note that the flange portion 202 in this embodiment is curved to match the outer shape of the circular seat frame 30. A fastening hole 214 is formed in the center of a fastening portion 210 in a flat portion at the top of the fastening bracket 200. In addition, a weld nut 220 is joined to a lower surface 210B of the fastening portion 210 by welding or the like so that the bolt hole overlaps the fastening hole 214.

[0033] The joining plate 120 of the anchor unit 100 is placed on the upper surface 210A of the upper fastening portion 210 of the fastening bracket 200 and fastened with the bolt 150. At this time, the claw portion 122 of the joining plate 120 of the anchor unit 100 shown in FIG. 2 comes into contact with or is close to the rear side of the rear end portion 211 of the fastening portion 210 of the fastening bracket 200.

[0034] 1 and 2, in this embodiment, a substantially annular first ring member 250 is sandwiched between the joining plate 120 of the anchor unit 100 and the head 152 of the bolt 150. Furthermore, a substantially annular second ring member 260 is sandwiched between the lower surface portion 120B of the joining plate 120 of the anchor unit 100 and the upper surface 210A of the fastening portion 210 of the fastening bracket 200. Note that in this embodiment, both the first ring member 250 and the second ring member 260 are formed by wave washers. Furthermore, the bolt 150 is tightened with a specified tightening torque.

[0035] In this way, the first ring member 250 and the second ring member 260, which are made of wave washers that are elastically deformable in the thickness direction, are sandwiched between the anchor unit 100 and the bolt 150, and when the bolt 150 is fastened with a specified tightening torque, the anchor unit 100 moves slightly up and down within the range of elastic deformation of the first ring member 250 and the second ring member 260 at the fastening portion of the joining plate 120 to which the bolt 150 is fastened. Therefore, the anchor 110 rotates slightly with the fastening portion as a fulcrum so that the front end 112 moves up and down. In other words, the front end 112 of the anchor 110 is configured to be slightly movable in the vertical direction.

[0036] When the bolt 150 is tightened with the specified tightening torque, the vertical position of the front end 112 of the anchor 110 is set so that during inspection (when the front end 112 is inserted into the inspection slit 526) using an inspection jig 500 (see Figure 3(A)) described below that imitates the child seat 40 shown in Figure 4, the upper half 112A of the front end 112 abuts against the upper corner 523 on the opening side of the inspection slit 526 into which the front end 112 of the anchor 110 in the inspection jig 500 is inserted.

[0037] [Inspection process using inspection jigs] Next, the inspection process using the inspection jig will be described.

[0038] All anchors 110 installed in a vehicle that are inserted into the slits 44 (see FIG. 5(B)) of the connector portion 42 of the ISOFIX-compatible child car seat 40 shown in FIG. 5 are inspected using an inspection jig 500 defined by the ISOFIX standard shown in FIG. 3(A). Specifically, an inspection jig 500 modeled after a child car seat is assembled, and the front end portion 112 (see FIGS. 1, 2, 4, and 5) of the anchor 110 is inserted all the way into the inspection slit 526 (see FIGS. 3(B) and 4) of the inspection connector portion 520 of the inspection jig 500, thereby checking whether the anchor 110 meets the ISOFIX standard. The inspection jig 500 is defined by the ISOFIX standard and is a common tool.

[0039] The inspection jig 500 has an inspection connector part 520 that protrudes toward the rear of the vehicle and imitates the connector part 42 (see FIG. 5(B)) of the child car seat 40. As shown in FIG. 4(B), an inspection slit 526 that imitates the slit 44 (see FIG. 5(B)) is formed at the tip of the inspection connector part 520.

[0040] Although the inspection jig 500, the inspection connector portion 520, and the inspection slit 526 are modeled after the child car seat 40, the connector portion 42, and the slit 44 (see FIG. 5(B)), they are not exactly the same in shape.

[0041] As shown in Fig. 4, the upper side of inspection slit 526 in inspection connector portion 520 is referred to as upper jaw portion 522, and the lower side of inspection slit 526 is referred to as lower jaw portion 524. Upper jaw portion 522 is longer toward the rear of the vehicle than lower jaw portion 524. Upper corner portion 523 on the opening side of inspection slit 526 is a lower corner of the rear end of upper jaw portion 522, and lower corner portion 525 on the opening side of inspection slit 526 is an upper corner of the rear end of lower jaw portion 524. In addition, the rear end of lower jaw portion 524 is formed with inclined surface 529 that slopes downward from lower corner portion 525 toward the front.

[0042] As described above, the vertical position of the front end 112 of the anchor 110 when fastened with a specified fastening torque is set so that the upper half 112A of the front end 112 of the anchor 110 abuts on the upper corner 523 on the opening side of the inspection slit 526 during inspection with the inspection jig 500. Also, as described above, the first ring member 250 and the second ring member 260, which are made of wave washers that are elastically deformable in the thickness direction, are sandwiched between the anchor 110 (see FIGS. 1 and 2), so the anchor 110 rotates around the fastening portion as a fulcrum, and the front end 112 moves slightly up and down.

[0043] Therefore, when the inspection jig 500 is moved from the front side to the rear side of the vehicle and the front end portion 112 of the anchor 110 is inserted into the inspection slit 526 of the inspection connector portion 520, the upper corner portion 523 of the upper jaw portion 522 comes into contact with the upper half 112A of the front end portion 112 of the anchor 110. Furthermore, when the inspection jig 500 is moved rearward, the front end portion 112 of the anchor 110 moves downward as shown by the imaginary line (chain double-dashed line), and is inserted all the way into the inspection slit 526 while rubbing against the slit upper surface 521 of the inspection slit 526.

[0044] [Action and effect] Next, the operation and effects of this embodiment will be described.

[0045] In the child seat mounting structure 50 of this embodiment, the first ring member 250, which is made of a wave washer that is elastically deformable in the thickness direction, is sandwiched between the head 152 of the bolt 150 and the joining plate 120 of the anchor unit 100, and therefore moves up and down at the fastening portion of the bolt 150. Therefore, the anchor 110 rotates so that the front end 112 moves up and down with the fastening portion as a fulcrum.

[0046] Furthermore, since the second ring member 260, which is made of a wave washer that can elastically deform in the thickness direction, is sandwiched between the joining plate 120 and the fastening portion 210 of the fastening bracket 200, the range of vertical movement of the front end portion 112 of the anchor 110 is increased.

[0047] Therefore, even if the front end 112 of the anchor 110 hits the upper corner 523 or the lower corner 525 on the opening side of the inspection slit 526 during inspection using the inspection jig 500 that resembles the child seat 40, the front end 112 moves downward or upward and is inserted into the inspection slit.

[0048] Alternatively, even if the front end 112 cannot be inserted all the way into the inspection slit 526, the tightening amount of the bolt 150 can be readjusted to adjust the front end 112 of the anchor 110 to a range where it can be inserted all the way into the inspection slit 526.

[0049] Therefore, the NG rate in the inspection of the anchor 110 using the inspection jig 500 is reduced.

[0050] Here, lower jaw 524 below inspection slit 526 in inspection connector portion 520 of ISOFIX inspection jig 500 is shorter than upper jaw 522 on the upper side, and has an inclined surface 529 at its rear end that slopes downward from lower corner 525 toward the front side. Therefore, when the upper half of front end 112 of anchor 110 abuts lower jaw 524, inclined surface 529 tends to guide front end 112 downward. In contrast, the rear end of upper jaw 522 does not have an inclined surface but is a vertical or nearly vertical surface, so that even if the lower half of front end 112 abuts it, it is unlikely to be guided upward, and moving inspection jig 500 may cause it to enter inspection slit 526.

[0051] Therefore, in this embodiment, the upper half 112A of the front end 112 of the anchor 110 is set to first abut on the upper corner 523 on the opening side of the inspection slit 526 during inspection with the inspection jig 500, so that the front end 112 of the anchor 110 is less likely to abut on the lower jaw 524. Therefore, the front end 112 of the anchor 110 does not abut on the lower jaw 524, but abuts on the upper corner 523 on the opening side of the inspection slit 526, causing the front end 112 to move downward and be inserted into the inspection slit 526. This further reduces the NG rate when inspecting the anchor 110 using the inspection jig 500.

[0052] [Variations] Next, a modification of the above embodiment will be described.

[0053] 1 and 2 is not sandwiched. Therefore, the plate surfaces of the lower surface portion 120B of the joining plate 120 of the anchor unit 100 and the upper surface 210A of the fastening portion 210 of the fastening bracket 200 come into contact with each other and are fastened together by the bolt 150.

[0054] Therefore, the impact force input to the anchor 110 during a vehicle collision with the child seat 40 (see Figure 5 (A)) installed is effectively transmitted and dispersed to the seat frame 30 via the surface-contacting joining plate 120 and fastening bracket 200.

[0055] <Other> The present invention is not limited to the above-described embodiment including its modifications.

[0056] For example, in the above embodiment, the first ring member 250 and the second ring member 260 are configured as wave washers, but this is not limited to this. The first ring member 250 and the second ring member 260 may be configured as spring washers, disc springs, rubber rings, etc. Furthermore, the first ring member 250 and the second ring member 260 may be configured as separate parts. For example, one of the first ring member 250 and the second ring member 260 may be a wave washer and the other may be a disc spring.

[0057] Furthermore, for example, in the above embodiment, the vertical position of the front end 112 of the anchor 110 when the bolt 150 is tightened with a specified tightening torque is set so that the upper half 112A of the front end 112 abuts on the upper corner 523 on the opening side of the inspection slit 526 during inspection with the inspection jig 500 (when the front end 112 is inserted into the inspection slit 526), ​​but this is not limited to this. For example, the axis 113 of the front end 112 of the anchor 110 may be set so that it is located above a slit center line 527 of the slit width of the inspection slit 526 and below the upper corner 523. Alternatively, the axis 113 of the front end 112 of the anchor 110 may be set so that it coincides with the slit center line 527 of the inspection slit 526.

[0058] Furthermore, for example, in the above embodiment, the rotation prevention mechanism that prevents the anchor unit 100 from rotating around the bolt 150 is the claw portion 122 that protrudes downward from the center in the width direction of the rear end portion of the joining plate 120 of the anchor unit 100, but this is not limited to this. For example, two or more claw portions 122 may be provided spaced apart in the width direction.

[0059] Further, for example, it may be a claw portion protruding upward from the rear end portion 211 of the fastening portion 210 of the fastening bracket 200. Alternatively, it may be configured such that a recess or hole provided in one of the joining plate 120 and the fastening portion 210 is inserted into a protrusion provided in the other of the joining plate 120 and the fastening portion 210.

[0060] Furthermore, the present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements are possible. For example, the above-described modified examples may be appropriately combined to form a configuration. [Explanation of symbols]

[0061] 40 Child Seat 42 Connector part 44 Slit 50 Child seat mounting structure 110 Anchor 112 Front end 120 Joint plate (example of joint) 122 Claw portion (an example of a rotation prevention portion) 150 volts 152 Head 210 Fastening part 210A Top (example of the upper part) 250 First ring member 260 Second ring member 500 inspection jig 523 Upper corner (upper corner) 526 Inspection slit

Claims

1. an anchor that is formed of a wire that has a U-shaped cross section in a plan view and is open toward the rear of the vehicle, and whose front end along the vehicle width direction is inserted into a slit in a connector portion of the child car seat; a joint portion to which a rear end portion of the anchor is joined; a fastening portion fixed to the vehicle body and having the joining portion fastened to an upper portion thereof with a bolt; a first ring member that is sandwiched between the head of the bolt and the joint and is elastically deformable in a thickness direction through which the bolt is inserted; a second ring member sandwiched between the joint portion and the fastening portion and elastically deformable in a thickness direction through which the bolt is inserted; A child seat mounting structure comprising:

2. a rotation prevention mechanism is provided to prevent the joint from rotating around the bolt; The child seat mounting structure according to claim 1.

Images