JP4061465B2 - Lower anchor structure with seat adjuster for automobile seats - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lower anchor structure in which a lower anchor is attached to seat adjusters attached to both ends of a hinge shaft that rotatably supports a seat back in a seat of a passenger car or the like.
[0002]
[Prior art]
In this type of automobile seat, a lower anchor is provided at a predetermined portion of the seat for attaching a CRS (Child Restraint System). For example, in the seat shown in FIG. 7, the seat back 2 is first attached to the seat cushion 1 so as to be rotatable, that is, reclining. In this case, the reclining angle of the seat back 2 is adjusted via the left and right seat adjusters 3.
[0003]
A hinge shaft 100 made of a pipe material is coupled between the seat adjusters 3, and the lower anchor 101 is disposed and fixed at a position near the seat adjuster 3 of the hinge shaft 100. The CRS 200 is mounted on the seat cushion 1 as indicated by the alternate long and short dash line. At this time, the CRS 200 is fixed to a predetermined portion of the seat by engaging the hook means provided on the CRS 200 with the lower anchor 101.
[0004]
As shown in FIG. 8, the lower anchor 101 is made of a wire material bent in a substantially “U” shape in this example. Then, as shown in FIG. 9, the lower anchor 101 is fixed to the hinge shaft 100 by welding the ends of the wire members that are joined together by being wound around the hinge shaft 100. Here, when the CRS 200 is mounted on the lower anchor 101 provided in this way, a front tensile load F (see FIG. 8) which is a legal strength requirement is given, and a lower anchor structure having such a strength requirement is provided. It is necessary to adopt.
[0005]
[Problems to be solved by the invention]
However, in the conventional lower anchor structure, the lower anchor 101 is directly attached and fixed to the hinge shaft 100. Therefore, when a forward tensile load F is applied, a bending load is input to the hinge shaft 100 as shown in FIG. Is done. Therefore, since a high-strength pipe material capable of withstanding such a bending load is required, a strong pipe material having a large diameter and a large thickness has to be used as the hinge shaft 100. Therefore, in the conventional lower anchor structure, the weight is heavy and the material cost is high.
[0006]
In view of the above, an object of the present invention is to provide a lower anchor structure with a seat adjuster for an automobile seat that realizes weight reduction and cost reduction.
[0007]
[Means for Solving the Problems]
This onset Ming, a Roaanka structure with seat adjuster having a Roaanka annexed to the right and left seat adjuster attached to both ends of the hinge axis of the motor vehicle seat, Roaanka is along the reinforcing member that couples between the left and right seat adjusters mutually Separately from this reinforcing member, it is horizontally mounted between the left and right seat adjusters , and when a tensile load in the direction perpendicular to the lower anchor is applied, the compressive load is applied to the reinforcing member via the end of the lower anchor. It is characterized by having acted .
[0008]
In the lower anchor structure with a seat adjuster for an automobile seat according to the present invention, it is preferable that an end portion of the lower anchor extends outside the seat adjuster and is coupled to the seat adjuster.
[0010]
In the lower anchor structure with a seat adjuster for an automobile seat according to the present invention, preferably, the lower anchor is made of a wire material, and the reinforcing member is made of a metal member.
[0011]
In the lower anchor structure with a seat adjuster for an automobile seat according to the present invention, preferably, the lower anchor is made of a wire material, and the reinforcing member is made of a pipe material or an angle member which is configured separately or integrally with the seat adjuster.
[0012]
According to the present invention, the lower anchor is horizontally mounted between the sheet adjusters separately from the reinforcing member along the reinforcing members that connect the sheet adjusters to each other. In that case, the end of the lower anchor is extended to the outside of the seat adjuster and fixed. By providing the lower anchor in this manner, when a predetermined tensile load acts on the lower anchor, a compressive load acts on the reinforcing member via the end of the lower anchor. Therefore, it is possible to prevent the hinge shaft from being deformed and become unable to be reclined, and to satisfy legal strength requirements while making the diameter and thickness of the hinge shaft and the lower anchor substantially small and thin.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a lower anchor structure with a seat adjuster for an automobile seat according to the present invention will be described using the same reference numerals for members that are substantially the same as or correspond to those of a conventional example based on the drawings.
[0014]
FIG. 1 shows the periphery of the sheet in this embodiment. In the figure, the seat back 2 is rotatably supported with respect to the seat cushion 1, and the reclining angle is adjusted via the left and right seat adjusters 3. Also in this example, the lower anchor 10 according to the present invention is provided at a predetermined portion of the sheet for attaching a CRS (Child Restraint System, see FIG. 7). The CRS is fixed to a predetermined portion of the sheet by engaging the hook means provided on the CRS with the lower anchor 10.
[0015]
A reinforcing member 11 made of a metal member, in this embodiment a hollow pipe material, is coupled between the sheet adjusters 3, and the lower anchor 10 is made of a wire material (for example, a solid wire made of steel having a diameter of about 6 mm). Along the member 11, the reinforcing member 11 is placed separately between the seat adjusters 3. As shown in FIG. 2, the lower anchor 10 has engaging portions 10a bent at the positions near the seat adjusters 3 on both sides so that the hook means of the CRS is engaged. A forward tensile load F, which is a strength requirement of the above, is applied.
[0016]
Further, in the lower anchor structure of the present invention, as shown in FIG. 3, the end 10b of the lower anchor 10 extends through the seat adjuster 3 to the outside, and is fixed to the seat adjuster 3 in the direction opposite to the tensile load direction. It has a structure. In this case, a through hole 3a for allowing the end portion 10b of the lower anchor 10 to penetrate and extend at a predetermined portion of the seat adjuster 3 is opened. Then, the lower anchor 10 is fixed to the seat adjuster 3 by welding the end 10b of the lower anchor 10 that extends through the through hole 3a and extends outside the seat adjuster 3 to the seat adjuster 3 as shown in the figure. . In addition, the reinforcing member 11 is fixed to the sheet adjuster 3 by inserting the end 11 a of the reinforcing member 11 into a through hole 3 b provided in the sheet adjuster 3 and welding W to the sheet adjuster 3.
[0017]
Here, as shown in FIG. 4, the seat adjuster 3 is attached to both ends of the hinge shaft 4 that serves as a pivot shaft of the seat back 2. The seat adjuster 3 is connected to a seat cushion frame (its base portion) 6 of the seat cushion 1 via a bracket 5. The seat cushion frame 6 is supported so as to be slidable along a guide rail 7 laid on the floor F of the body.
[0018]
In the above configuration, according to the present invention, as shown in FIG. 5, when a predetermined tensile load F acts on the lower anchor 10 at the portion of the engaging portion 10 a, the state shown by the solid line from the state shown by the dotted line in the illustrated example Transforms into At this time, the compressive load P acts on the end portion 11 a of the reinforcing member 11 via the end portion 10 b of the lower anchor 10.
[0019]
As described above, the tensile load acting in the direction perpendicular to the lower anchor 10 is received as the compressive load P of the reinforcing member 11 via the seat adjuster 3, so that the reinforcing member 11 can be compared with a bending load. The allowable stress to have can be set small. Therefore, even if the diameter and thickness of the lower anchor and the hinge shaft as well as the reinforcing member 11 are substantially small and thin, legal strength requirements can be appropriately satisfied. As a result, the weight around the reinforcing member 11 and the lower anchor structure can be reduced, and the material cost and the like can be reduced.
[0020]
Next, FIG. 6 shows a modified example of a lower anchor structure with a seat adjuster for an automobile seat according to the present invention.
In these examples, the lower anchor 10 is made of a wire material as in the above-described embodiment, and the reinforcing member 11 is configured separately from the seat adjuster 3 (FIG. 6A) or integrated (FIG. 6B). It is an angle material having a substantially L-shaped cross section. In either case, the end 10 b of the lower anchor 10 is extended to the outside of the seat adjuster 3 and is welded to the seat adjuster 3. The end 10b of the lower anchor 10 can be fixed to the end 11a of the reinforcing member 11.
[0021]
In these modifications, as in the above-described embodiment, the input load applied to the reinforcing member 11 is received as the compression load P. As a result, the weight and cost of the lower anchor structure can be reduced.
[0022]
The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the present invention.
For example, specific numerical values such as the diameter of the wire material of the lower anchor 10 can be appropriately changed, and a reinforcing member in the case of using a so-called square pipe material having a rectangular cross section as the reinforcing member 11 and further using a plate material such as an angle material. The cross-sectional shape of 11 is not limited to the L shape, and can be appropriately adopted as necessary.
[0023]
【The invention's effect】
As described above, according to the present invention, in this type of lower anchor structure with a seat adjuster, the input load to the reinforcing member is received as a compressive load, so that the diameter and thickness of the reinforcing member are substantially reduced and thinned. Thus, weight reduction and cost reduction can be effectively realized.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the vicinity of a seat in an embodiment of a lower anchor structure with a seat adjuster of the present invention.
FIG. 2 is a perspective view showing an embodiment of a lower anchor structure with a seat adjuster according to the present invention.
FIG. 3 is a partial plan view showing a configuration of a main part in an embodiment of a lower anchor structure with a seat adjuster of the present invention.
FIG. 4 is a perspective view showing an embodiment of a lower anchor structure with a seat adjuster according to the present invention.
FIG. 5 is a perspective view showing an operation in the embodiment of the lower anchor structure with a seat adjuster of the present invention.
FIG. 6 is a perspective view showing a modification of the lower anchor structure with a seat adjuster according to the present invention.
FIG. 7 is a perspective view showing the periphery of a seat according to a conventional example.
FIG. 8 is a perspective view showing a main configuration of a conventional lower anchor structure.
9 is a cross-sectional view taken along line AA in FIG.
FIG. 10 is a perspective view showing an operation in a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat back 3 Seat adjuster 4 Hinge shaft 5 Bracket 6 Seat cushion frame 7 Guide rail 10 Lower anchor 10a Lower anchor engaging part 10b Lower anchor end 11 Reinforcement member 11a Reinforcement member end F Tensile load

Claims (4)

A lower anchor structure with a seat adjuster attached to the left and right seat adjusters attached to both ends of the hinge shaft of the automobile seat,
A reinforcing member for coupling the left and right seat adjusters ;
A lower anchor that is placed between the left and right seat adjusters separately from the reinforcing member ;
A lower anchor structure with a seat adjuster for an automobile seat , wherein a compressive load acts on the reinforcing member via an end of the lower anchor when a tensile load in a direction perpendicular to the lower anchor acts. .   2. The lower anchor structure with a seat adjuster for an automobile seat according to claim 1, wherein an end portion of the lower anchor extends to the outside of the seat adjuster and is coupled to the seat adjuster.   The lower anchor structure with a seat adjuster for an automobile seat according to claim 1, wherein the lower anchor is made of a wire material, and the reinforcing member is a metal member.   3. The seat adjuster for an automobile seat according to claim 1, wherein the lower anchor is made of a wire material, and the reinforcing member is made of a pipe material or an angle member separately or integrally formed with the seat adjuster. With lower anchor structure.

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