JP5440256B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat including a lower anchorage for fixing a child seat on a pipe spanned between both side frames of a seat cushion.

  2. Description of the Related Art Conventionally, a mechanism (ISOFIX) defined by an international standard has been adopted as a mechanism for fixing a child seat to an automobile seat (Patent Document 1 below). That is, a pipe is laid between the left and right side frames of the seat cushion, and a U-shaped mounting bracket (lower anchorage) for connecting and fixing the child seat connector on the pipe is seat width. Two are arranged side by side in the direction. These mounting brackets are provided side by side in the sheet width direction with a predetermined interval determined by the international standard.

JP 2009-202788 A

  However, in the above-described conventional technique, when the sheet width is narrow, it may not be possible to arrange two lower anchorages side by side at a predetermined interval in the sheet width direction.

  The present invention was devised to solve the above problems, and the problem to be solved by the present invention is to solve the problem of lower anchorage with a predetermined interval in the sheet width direction even if the sheet width is narrow. It is to be able to arrange them one by one.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
First, a first invention is a vehicle seat including a lower anchorage for fixing a child seat on a pipe spanned between both side frames of a seat cushion. One side frame of the seat cushion includes a pipe coupling portion coupled to the pipe and a seat back coupling portion coupled to the seat back on the outer side in the seat width direction than the pipe coupling portion. The pipe has an extension portion extending outward in the sheet width direction from the pipe coupling portion, and a lower anchorage is set in the extension portion.

  According to the first aspect, the lower anchorage is disposed in an empty space in the seat width direction between the pipe coupling portion and the seat back coupling portion of one side frame. Therefore, when two lower anchorages are arranged side by side at a predetermined interval in the seat width direction, even if the lower anchorage and the side frame cause an overlapping arrangement, the seat width is increased. And two lower anchorages can be arranged side by side on the pipe.

  Next, 2nd invention provides the lower anchorage in the 1st invention mentioned above in the state exposed outside from the shield which covers one side frame from the outside.

  According to the second invention, by providing the lower anchorage exposed from the shield to the outside, the root portion of the lower anchorage can be covered by the shield, and the shield can be set to be compact. it can.

  Next, a third invention is the above-described first or second invention, wherein the lower anchorage is coupled to both the pipe extension and the pipe joint of one side frame. .

  According to the third aspect of the invention, even if the extension portion of the pipe is supported in a cantilever state on one side frame, the lower anchorage is coupled to both the extension portion and the pipe coupling portion of the side frame. As a result, it is possible to increase the supporting strength against the tensile load on the outer side and the front side in the seat width direction of the lower anchorage.

  Next, a fourth invention is the above-described second invention, wherein the lower anchorage is formed by bending a wire-like frame, and the lower anchorage is exposed to the shield. A through-hole is formed, and the fin member for covering the through-hole is stretched from one side to the position where it reaches the other side facing the side from the side of the back side of the through-hole. It is provided to be elastically supported by the shield in a protruding form.

  According to the fourth aspect of the invention, the fin member is provided in a state of being elastically supported so as to project from one side to the position reaching the other side surface from the one side surface of the through hole. Compared to the one configured to project from the side surfaces of both sides of the fin, it can be configured so that the edge of the fin member is not exposed in the through hole, and the lid can be closed so that there is no gap in the through hole. it can.

  Next, a fifth invention is the above-mentioned third invention, further comprising a reinforcing member for reinforcing the extension portion of the pipe. The reinforcing member has a shape surrounding the extension portion of the pipe, and one end thereof is fixed to the pipe coupling portion of one side frame.

  According to the fifth aspect of the invention, the extension of the pipe is reinforced by the reinforcing member, whereby the child seat fixing strength by the lower anchorage can be further increased.

1 is a perspective view showing a skeletal structure of a vehicle seat of Example 1. FIG. It is a front view of the frame structure of a vehicle seat. It is a perspective view of a shield. It is the perspective view which showed the back side structure of the shield.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the vehicle seat 1 according to the first embodiment will be described with reference to FIGS. In the following description, “width direction” refers to the width direction of the vehicle seat 1, and “outside” and “inside” refer to the vehicle seat 1, respectively. In the width direction, “outside of the shape of the vehicle seat 1” and “inside of the shape of the vehicle seat 1” are meant.

  As shown in FIG. 1, the vehicle seat 1 of the present embodiment has a mechanism (ISOFIX) for fixing a child seat on a pipe 4 spanned between the left and right side frames 3 </ b> A and 3 </ b> B of the seat cushion 3. The two lower anchorages 6A and 6B and the one top tether anchorage 7 are provided. These lower anchorages 6A and 6B and the top tether anchorage 7 are made of polished steel wire made of mild steel, and are respectively fixed integrally with the pipe 4.

  Specifically, each of the lower anchorages 6A and 6B has a horizontally extending piece at the lower end of the figure, which is welded and fixed to the back surface of the pipe 4, and from there to the upper side of the pipe 4. It is bent so as to stand up and further bent so as to extend horizontally toward the side surfaces of the side frames 3A and 3B on each side, and further along the side surfaces of the side frames 3A and 3B on each side. The pieces bent to extend rearward are welded and fixed to the side faces of the side frames 3A and 3B on the respective sides.

  Further, the top tether anchorage 7 is bent into a U-shape, and both ends thereof are bent so as to extend along the back surface of the pipe 4 and are welded and fixed to the back surface of the pipe 4 respectively. Has been. Thereby, the top tether anchorage 7 is arranged in a state in which the U-shape projects from the rear surface of the pipe 4 to the rear side and projects to the rear side of the seat cushion 3.

  Each of the lower anchorages 6A and 6B described above pushes each connector (not shown) provided on the fixing pieces 6Aa and 6Ba extending in the horizontal direction from the lower side of the child seat to the rear side from the front side. By engaging with each other, the child seat has a function of holding the child seat fixed to the vehicle seat 1. In addition, the top tether anchorage 7 has a top tether (belt: not shown) that is fed upward from the rear portion of the child seat to the rear side of the vehicle seat 1 in the horizontally extending fixed piece 7A. By engaging, the child seat has a function of holding the child seat so as not to tilt.

  By the way, the width (separation width) between the arrangements of the lower anchorages 6A and 6B described above is set to a predetermined width determined by international standards. However, the vehicle seat 1 according to the present embodiment is a seat on the narrow side of the rear seat of the vehicle that is divided into 7: 3, the width between the arrangement of the lower anchorages 6A and 6B, and the seat cushion. Width between the arrangement of the three side frames 3A and 3B (width between the arrangement of the side frames 3A and 3B connected to both outer sides of the side frames 2A and 2B of the seat back 2 via a reclining device (not shown)) It is the composition of the relationship that and overlap.

  Specifically, the lower anchorage 6B on the right side (vehicle inner side) in the drawing is disposed adjacent to the inner side surface of the side frame 3B on the same side, thereby lowering the lower side (vehicle outer side) in the drawing. The arrangement of the anchorage 6A and the arrangement of the seat back connecting portion 3Ab connected to the side frame 2A of the seat back 2 of the side frame 3A on the same side overlap each other. Therefore, the vehicle seat 1 of the present embodiment is formed in a shape in which the side frame 3A on the left side in the figure in which the overlapping of the arrangement occurs is bent in a crank shape, and the pipe 4 serving as an arrangement site of the lower anchorage 6A. The connecting portion (pipe connecting portion 3Aa) is deviated toward the other side frame 3B side with respect to the seat back connecting portion 3Ab, and the pipe connecting portion 3Aa and the seat back connecting portion opened by the bias The lower anchorage 6A is arranged in an empty space Sp (see FIG. 2) between 3Ab.

  Hereinafter, the arrangement structure of the lower anchorage 6A on the left side in the drawing will be described in detail. Here, the pipe 4 is formed in a rectangular hollow cross-sectional shape that is long in the height direction so that it is difficult to bend and deform in the direction of gravity, and one end on the right side in the figure is attached to the side frame 3B on the same side. It is in a state of being penetrated and inserted and integrally welded and fixed. Further, the other end of the pipe 4 on the left side in the drawing is inserted through the pipe coupling portion 3Aa of the side frame 3A on the same side and is integrally welded and fixed. The extended portion 4A extending outward from the portion 3Aa is cantilevered by the pipe coupling portion 3Aa.

  In the lower anchorage 6A, a piece extending in the horizontal direction on the lower end side in the drawing described above is welded and fixed to the back surface of the extension portion 4A of the pipe 4 and bent to the rear side on the other end side. The piece is welded and fixed to the outer surface of the pipe coupling portion 3Aa of the side frame 3A. The pipe joint 3Aa of the side frame 3A described above has one end of a U-shaped reinforcing member 5 that surrounds the extension 4A of the pipe 4 from the outside and reinforces the extension 4A on the outer surface thereof. Welded and fixed.

  This reinforcing member 5 is formed in a U-shaped cross section surrounding the extension 4A from the outside as being in surface contact with the upper surface, the lower surface and the front surface of the extension 4A, and is formed through the front surface thereof. The front surface of the extended portion 4A is exposed from the long hole 5A formed in a long shape in the sheet width direction, and the front surface of the extended portion 4A exposed in the long hole 5A. As a result, the reinforcing member 5 and the extension 4A are integrally welded to each other.

  Therefore, the setting of the reinforcing member 5 increases the support strength of the extension 4A that is cantilevered by the pipe coupling portion 3Aa, and the child seat is fixed by the lower anchorage 6A fixed to the extension 4A. Has been enhanced. Since the lower anchorage 6B on the right side of the figure is joined to the portions supported on both ends of the side frames 3A and 3B of the pipe 4, the child seat is fixed at a high strength.

  By the way, a resin shield 8 that covers the side frame 3 </ b> A on the same side from the outside is mounted on the left side (outer side) of the vehicle seat 1. The shield 8 is set by being assembled straight from the outside in the width direction with respect to the side frame 3A on the left side of the figure, and the fixing piece 6Aa of the lower anchorage 6A described above is set to the outside during the assembly. A through hole 8A is formed so as to pass through and be exposed.

  Here, the shapes of the shield 8 and the through hole 8A described above are well shown in FIGS. As shown in these drawings, the through-hole 8A passes the fixing piece 6Aa of the lower anchorage 6A straight in the width direction by mounting in the width direction on the outer side frame 3A (see FIG. 1). As a shape to be exposed to the outside, it is formed in a shape penetrating and formed in an L shape across the corner between the standing wall surface and the seat surface formed in the shield 8.

  The shield 8 is provided with a rubber fin member 8B that covers the through hole 8A. As shown in FIG. 4, the fin member 8 </ b> B is formed in a surface shape along the shape of the back surface of the shield 8, and the outer peripheral portion surrounding the outer peripheral region of the through hole 8 </ b> A is coupled to the back surface of the shield 8. It is provided in a fixed state. Specifically, the fin member 8B is formed with an L-shaped through hole 8Ba having the same shape as the through hole 8A of the shield 8 at the center, and from the side surface on one side in the short side direction of the through hole 8Ba. It has a shape having a fin portion 8Bb protruding from one side to a position reaching the other side surface facing this.

  As shown in FIG. 3, the fin portion 8Bb is held in a posture state that forms a surface flush with the surface of the shield 8 in the free state due to its elasticity. Further, as shown in FIG. 4, the protruding edge 8Bc of the fin portion 8Bb is shaped like a corner between the other side surface 8Ab of the through-hole 8A of the shield 8 and its back surface in the above free state. It is formed in a shape that is bent into a stepped shape.

  Thereby, the fin part 8Bb is in a state of extending from one side to the position reaching the side surface 8Ab on the other side from the one side surface 8Aa of the through hole 8A of the shield 8, and the edge 8Bc is always provided. The state where the entire through-hole 8A of the shield 8 after the lower anchorage 6A is passed through is covered without gaps by being fitted into the corner between the other side surface 8Ab of the through-hole 8A of the shield 8 and the back surface thereof. (See FIG. 1). The above-described fin portion 8Bb is pushed and bent toward the back surface side of the shield 8, thereby opening the through hole 8A of the shield 8 and allowing the lower anchorage 6A to pass through the through hole 8A of the shield 8. State.

  Then, after passing through the lower anchorage 6A, the fin portion 8Bb that has been pushed in is returned to its original state, so that the through-hole 8A of the shield 8 is closed without any gap by the fin portion 8Bb. The portion can be covered with the shield 8 and the fin portion 8Bb so that the fixed piece 6Aa of the lower anchorage 6A is exposed to the outside. Returning to FIG. 1, in the above-described vehicle seat 1, the front lower portion of the seat cushion 3 and the floor are linked by the link mechanism 9, and the link mechanism 9 is brought down with the seat back 2 being brought forward. The entire vehicle seat 1 can be folded and stored at a low position on the floor by performing a link motion in the rotational direction of the fold. Since this storage structure is publicly known, detailed description thereof will be omitted.

  Thus, according to the vehicle seat 1 of the present embodiment, the lower anchorage 6A is formed in a shape in which one side frame 3A is bent into a crank shape, and its pipe coupling portion 3Aa is connected to the seat back. The portion 3Ab is disposed in the outer empty space Sp that is formed by being biased toward the other side frame 3B. Therefore, when two lower anchorages 6A are arranged side by side at a predetermined interval in the width direction, even if the lower anchorage 6A and the side frame 3A cause an overlapping arrangement, the seat width is reduced. Without spreading, the two lower anchorages 6A and 6B can be arranged side by side with a predetermined interval determined by the international standard.

  Further, by providing the lower anchorage 6A exposed from the shield 8 to the outside, the root portion of the lower anchorage 6A can be covered with the shield 8, and the shield 8 can be set compact. The extension 4A of the pipe 4 is cantilevered with respect to one side frame 3A, but the lower anchorage 6A is coupled to both the extension 4A and the pipe coupling portion 3Aa of the side frame 3A. As a result, it is possible to increase the supporting strength against the tensile load on the seat outer side and the front side of the lower anchorage 6A.

  Further, the fin member 8B is elastically supported so as to protrude from one side to the position reaching the other side surface 8Ab from one side surface 8Aa of the through-hole 8A of the shield 8, whereby the fin member 8B is shielded. Compared with what is configured to project from the side surfaces on both sides of the eight through holes 8A, the fin member 8B can be configured not to be exposed in the through holes 8A, and the fin member 8B allows the through holes 8A to be exposed. It can be covered so that there is no gap inside. Further, the reinforcement portion 5 reinforces the extension 4A of the pipe 4, whereby the child seat fixing strength by the lower anchorage 6A can be further increased.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the extension portion 4A of the pipe 4 may not be constituted by the extension portion 4A of the pipe 4 that penetrates the pipe coupling portion 3Aa, and is separately attached and fixed to the outer surface of the pipe coupling portion 3Aa. It may be a thing. Further, in order to secure a space for arranging the lower anchorage 6A, the side frame 3A of the seat cushion 3 disposed on the outer side of the vehicle seat 1 is bent inward in a crank shape, and the pipe coupling portion 3Aa is formed. Although an example in which the seatback connecting portion 3Ab is biased toward the other side frame 3B is illustrated, the pipe coupling portion 3Aa with the pipe 4 of the inner side frame 3B is connected to the outer side frame 3A. The arrangement may be such that the arrangement space of the lower anchorage 6B is secured on the inner side by being biased to the side. In addition, the pipe has a rectangular hollow cross section, but it may be formed in other cross sectional shapes such as a circle and an ellipse, and is not limited to a hollow cross section but has a solid cross section. It may be.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2A, 2B Side frame 3 Seat cushion 3A, 3B Side frame 3Aa Pipe connection part 3Ab Seat back connection part 4 Pipe 4A Extension part 5 Reinforcement member 5A Long hole 6A, 6B Lower anchorage 6Aa, 6Ba fixation Piece 7 Top tether anchorage 7A Fixed piece 8 Shield 8A Through hole 8Aa One side surface 8Ab The other side surface 8B Fin member 8Ba Through hole 8Bb Fin portion 8Bc Edge portion 9 Link mechanism Sp Empty space

Claims (3)

A vehicle seat having a lower anchorage for fixing a child seat on a pipe spanned between both side frames of a seat cushion,
One side frame of the seat cushion includes a pipe coupling portion coupled to the pipe, and a seat back coupling portion coupled to a seat back outside the pipe coupling portion in the seat width direction, The pipe has an extension portion that extends outward in the seat width direction from the pipe coupling portion, and the lower anchorage is set in the extension portion. The vehicle seat according to claim 1,
The vehicle seat, wherein the lower anchorage is provided in a state of being exposed to the outside from a shield that covers the one side frame from the outside. The vehicle seat according to claim 1 or 2,
The vehicle seat according to claim 1, wherein the lower anchorage is provided so as to be coupled to both an extension portion of the pipe and the pipe coupling portion of the one side frame.

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