JP2016215969A - Back board fitting structure and vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a back board fitting structure which is low cost and facilitates fitting work of a back board.SOLUTION: A seat back 2 comprises a trim cover 5 covering a backrest surface 2a and a back board 6 covering a back face 2f on the opposite side from the backrest surface 2a. A back board fitting structure comprises a first line fastener 7a fitted to an edge part 5a on the back face 2f side of the trim cover 5, a soft part formed in an edge part 6a of the backrest surface 2a side of the back board 6 so as to be softer than other portions and be sewn, and a second line fastener 7b which is sewn to the soft part and can be coupled with the first line fastener 7a. The back board 6 is fitted to the trim cover 5 by coupling the first line fastener 7a and the second line fastener 7b with each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a backboard mounting structure and a vehicle seat, and more particularly to a backboard mounting structure in a seat back of a vehicle seat.

Patent Document 1 discloses a backboard mounting structure of a seat back in a vehicle seat.
In the backboard mounting structure described in Patent Document 1, a hook portion is provided on the backboard, and the hook portion is engaged and supported by a wire member or the like of a seatback frame serving as a skeleton of the seatback. Yes.

JP-A-8-308675

In the backboard mounting structure described in Patent Document 1, a hole for screwing is formed in the backboard in order to provide the hook portion, or a dedicated shape for supporting the hook portion is formed. A manufacturing process is required. Therefore, the cost becomes high.
In addition, since it is necessary to provide the hook portion at an inner position away from the outer edge of the backboard, it is not always easy to engage the hook portion with a wire or the like in the mounting operation of the backboard. There was room.

  Therefore, a problem to be solved by the present invention is to provide a backboard mounting structure and a vehicle seat that are easy to mount the backboard at low cost.

In order to solve the above problems, the present invention has the following configuration.
1) A backboard mounting structure in a seat back having a trim cover covering a backrest surface and a backboard covering a back surface opposite to the backrest surface,
A first line fastener attached to an edge on the back side of the trim cover; a soft part formed on the edge on the backrest side of the backboard that is softer than other parts and sewn; and A second line fastener sewn to a soft part and connectable to the first line fastener;
The backboard mounting structure is characterized in that the first wire fastener and the second wire fastener are coupled and the backboard is attached to the trim cover.
2) The 1st line fastener and the 2nd line fastener are provided ranging over one side of the width direction in the seat back, a tip side, and the other side. It is a backboard attachment structure of description.
3) The backboard mounting structure according to 1) or 2), wherein the soft portion is formed with a lower degree of compression than the other portions.
4) A vehicle seat having a seat cushion and a seat back,
A trim cover that covers a backrest surface of the seat back, a backboard that covers a back surface opposite to the backrest surface of the seat back, and a first line fastener attached to an edge of the trim cover on the back surface side A soft portion that is formed softer than other portions at the edge of the backboard side of the backboard and can be sewn, and a second portion that can be sewn to the soft portion and coupled to the first wire fastener. Wire fasteners, and
The vehicle seat according to claim 1, wherein the trim cover and the backboard are integrated by combining the first line fastener and the second line fastener.
5) According to 4), the first line fastener and the second line fastener are provided so as to straddle one side surface, the front end surface, and the other side surface of the seat back in the width direction. The vehicle seat described.
6) The vehicle seat according to 4) or 5), wherein the soft portion is formed with a lower degree of compression than the other portions.

  According to the present invention, it is possible to obtain an effect that the backboard can be easily attached at low cost.

FIG. 1 is a perspective view for explaining a seat 51 which is an example of a vehicle seat according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view at the position S2-S2 in FIG. FIG. 3 is a partial cross-sectional view at the position S3-S3 in FIG. It is a 1st figure for demonstrating the formation process of the backboard 6 with which the sheet | seat 51 is provided. FIG. 6 is a second view for explaining the molding process of the backboard 6. 4 is a partial cross-sectional view for explaining a backboard 6. FIG.

An example of the vehicle seat according to the embodiment of the present invention is a seat 51. First, the configuration of the sheet 51 will be described with reference to FIGS.
FIG. 1 is a perspective view of the seat 51 as viewed obliquely from the upper left rear. Here, the front-rear, left-right, up-down directions are defined by the directions indicated by the arrows in FIG. The left-right direction is the width direction of the sheet 51.
Vehicles include automobiles, railway vehicles, aircraft, ships, and the like.
2 is a partial cross-sectional view (longitudinal cross-sectional view) at the position S2-S2 in FIG. 1, and FIG. 3 is a partial cross-sectional view (transverse cross-sectional view) at the position S3-S3 in FIG.

The seat 51 includes a seat cushion 1 serving as a seat (illustrated by a two-dot chain line in FIG. 1) and a seat back 2 serving as a backrest.
The seat back 2 includes a seat back frame 3 serving as a skeleton, a flexible pad 4 (see FIGS. 2 and 3) that wraps the seat back frame, a trim cover 5 that covers the front side of the pad 4, and a pad. 4 and a backboard 6 attached so as to cover the rear side (back side).

The trim cover 5 is formed of a known material such as genuine leather, synthetic leather, or fabric.
Specifically, when the trim cover 5 is put on the pad 4 from the front surface 2a side of the seat back 2, the trim cover 5 is slightly deviated from the center in the front-rear direction on the bottom surface 2b, the left side surface 2c, the top surface 2d, and the right side surface 2e. It is formed so as to cover the range up to the position.
The front surface 2 a is a backrest surface of the seat back 2, and the upper surface 2 d is a front end surface of the seat back 2.

In the trim cover 5, a line fastener 7 a that is an open fastener having an element group (hereinafter also simply referred to as a fastener 7 a) is formed on a rear edge 5 a when the pad 4 is put on the pad 4. The sewing thread 33 is sewn on.
That is, the fastener 7a is attached to a portion from a position P1 at the lower rear side on the left side surface 2c to a position P4 at the lower left side on the right side surface 2e through a position P2 corresponding to the upper left shoulder and a position P3 corresponding to the upper right shoulder. It has been.

  Further, as shown in FIG. 2, a hook 8 a that is a convex side of the hook engaging portion 8 that engages with the concave and convex portions is sewn to the edge portion 5 b on the bottom surface 2 b side of the trim cover 5 with a sewing thread 35. .

The backboard 6 is three-dimensionally formed from a polyester or polyurethane foam material.
Specifically, when the backboard 6 is addressed to the pad 4 from the side that becomes the rear surface 2f of the seat back 2, the rear surface 2f of the seat back 2, the left side 2c, the upper surface 2d, and the rear side of the right side 2e It is three-dimensionally molded so that it can cover the part. The rear surface 2f of the seat back 2 is a surface opposite to the front surface 2a of the backrest surface, and is also referred to as a back surface 2f.

  Further, when the backboard 6 is addressed to the pad 4 from the side that becomes the rear surface 2f, the line fastener 7b (open fastener) that is coupled and separated (opened / closed) from the fastener 7a at the edge 6a that becomes the front side. Hereinafter, it is simply referred to as a fastener 7b.

The position of the fastener opening tool that is the starting point when the fastener 7a and the fastener 7b are joined to form the fastener portion 7 is set to a position P1 or a position P4.
Further, as shown in FIG. 2, a hook receiving portion 8b for locking the hook 8a is attached to the edge portion 6b on the lower side.
The hook receiving portion 8b extending over the hook 8a may not be a set extending in the left-right direction.
It may be a plurality of sets that are mounted apart in the left-right direction.

  A method for forming the backboard 6 and a method for attaching the fastener 7b and the hook receiving portion 8b to the backboard 6 will be described later.

When the trim cover 5 is put on the pad 4 from the front side and the backboard 6 is applied from the rear side, the fastener 7a and the fastener 7b face each other close to each other.
Further, at the lower part of the rear surface 2f, the hook 8a is hooked on the hook receiving portion 8b to be locked.
As a result, the backboard 6 is integrated with the trim cover 5. That is, in the seat 51, the backboard 6 is attached to the rear surface 2 f side, which is the back surface of the seatback 2, as an externally visible member.

  Next, a method for forming the backboard 6 and a method for attaching the fastener 7b and the hook receiving portion 8b to the backboard 6 will be described in detail with reference mainly to FIGS.

  For the formation of the backboard 6, a belt-sheet-like base material 6c and a skin material 6d are used. The backboard 6 uses these as raw materials and hot-presses the belt-sheet-like intermediate body 6T formed by the raw sheet forming apparatus 10 shown in FIG. 4 by the heating device 26 and the molding machine 27 shown in FIG. Further, unnecessary portions on the periphery are cut by a cutting machine 28.

First, as shown in FIG. 4, in the original sheet forming apparatus 10, the belt-sheet-like base material 6 c wound around the reel 11 is unwound from the reel 11 and drawn between a pair of rollers 12 a and 12 b that are pressed against each other. .
The lower part of the roller 12b is immersed in the adhesive 9 accommodated in the pool 9a.
Thereby, the adhesive agent 9 is apply | coated to the one surface side (lower surface side in FIG. 4) of the base material 6c.

On the other hand, a belt sheet-like skin material 6d having the same width as the base material 6c is wound around the reel 13.
The skin material 6d is fed out from the reel 13 and is drawn through a guide roller 15 between a pair of rollers 14 and 14a that are pressed against each other.
Similarly, the base material 6c coated with the adhesive 9 is also drawn so that the surface coated with the adhesive 9 is the skin material 6d side and overlapped with the skin material 6d between the pair of rollers 14 and 14a. .
Thereby, the base material 6c and the skin material 6d are overlapped with the adhesive 9 interposed therebetween.

Then, after the base material 6c and the skin material 6d are overlapped with each other, the base material 6c and the skin material 6d are unloaded from the pair of rollers 14 and 14a, and then sequentially transported across the drying rollers 16 to 20.
As a result, the adhesive 9 is cured to become an adhesive layer 9b, and the base material 6c and the skin material 6d become a belt sheet-like intermediate 6T integrated through the adhesive layer 9b.

  Thereafter, the intermediate body 6T is wound around the product reel 23 through the tension applying rollers 21 and 22.

Next, the product reel 23 around which the intermediate body 6T is wound is loaded into the loading portion 26a of the heating device 26 as shown in FIG.
The intermediate body 6T is unwound from the product reel 23 and is passed between a pair of rollers 25 and 25 that are pressed against each other.
Further, it is passed between a pair of heaters 26b, 26b that are spaced apart in the vertical direction in FIG. The heater 26b is a ceramic heater, for example.
The intermediate 6T is heated while passing between the heaters 26b and 26b, and is softened to an extent that it can be easily deformed by an external force.

Next, the softened intermediate 6T is carried into the molding machine 27.
The molding machine 27 has a male mold 27a and a female mold 27b that are separated from each other in the vertical direction of FIG.
The male mold 27a and the female mold 27b have a surface shape corresponding to the shape of the backboard 6 that is a product to be molded.
The molding machine 27 presses and compresses the intermediate body 6T that has entered between the male mold 27a and the female mold 27b in the vertical direction. Specifically, the intermediate body 6T is deformed into a three-dimensional shape and thickness corresponding to the surface shape of each die 27a, 27b and the minimum gap between the male die 27a and the female die 27b during pressing.
FIG. 5 shows a case where the intermediate body 6T is press-molded into a concavo-convex shape to form a molded intermediate body 6T1.

  Finally, an unnecessary portion of the molding intermediate 6T1 is cut by the cutting machine 28 to obtain the backboard 6 that is a product.

In the molding machine 27, a plurality of minimum gaps between the male mold 27a and the female mold 27b at the time of pressing are set according to the portion of the backboard 6 to be formed.
That is, the minimum gap between the male die 27a and the female die 27b during pressing is a portion having a predetermined value (referred to as a strong die press portion) and a portion larger than the predetermined value (referred to as a weak die press portion). And at least two different gaps.

Specifically, the portion where the intermediate 6T is pressed by the weak mold press portion (simply referred to as the weak press portion) is more base material than the portion pressed by the strong mold press portion (simply referred to as the strong press portion). The amount of compression of 6c is small (the degree of compression is low), soft, and thick. In other words, the strong press portion is a portion where the amount of compression of the base material 6c is larger (the degree of compression is high), hard, and thinner than the weak press portion.
Further, the weak press portion can be made soft enough to allow sewing by making the gap between the weak press portions of the mold during pressing wider than a certain level.

  This makes the mold strong press part correspond to the molding of the part (area) where high strength is required as the backboard 6, and the mold weak press is applied to the part (area) where the buffer effect is desired or the part (area) to be sewn. By making the parts correspond, desired hardness and rigidity can be given to the backboard 6 for each region.

  Hereinafter, the strong press portion formed on the backboard 6 is referred to as a strong press portion AH, and the weak press portion is referred to as a weak press portion AS.

In this way, as shown in FIG. 6, in the backboard 6, the base material 6c and the skin material 6d are integrated with the cured adhesive layer 9b interposed therebetween.
The backboard 6 is formed to have a strong press portion AH and a weak press portion AS that is thicker and softer than the strong press portion AH.

  The formation area of the strong press part AH and the weak press part AS in the backboard 6 will be described with reference to FIGS. 1 to 3 again. 1-3, the adhesive layer 9b is not shown in order to avoid complication of the drawings.

The backboard 6 includes two independent weak press portions AS1, AS2 as weak press portions AS.
The weak press portion AS1 is continuously formed along the edge 6a at the edge 6a on the front side of the backboard 6. The weak press portion AS1 is formed at least in a portion (region) where the fastener 7b is sewn in the edge portion 6a.
Further, the weak press portion AS2 is continuously formed along the edge 6b on the lower edge 6b of the backboard 6. Weak press part AS2 is formed in the part which sews the hook receptacle 8b in the edge part 6b at least.
Therefore, the area other than the edge portions 6a and 6b is a strong press portion AH, and the strength necessary for the backboard 6 is secured.

As shown in FIGS. 2 and 3, the fastener 7 b is sewn to the weak press part AS <b> 1 in the edge part 6 a with a sewing thread 31 by forming a folded part 7 b <b> 1.
As shown in FIG. 3, the hook receiver 8 b is sewn to the weak press part AS <b> 2 at the edge part 6 b with a sewing thread 34.

As described above in detail, the sheet 51 of the embodiment does not need to be formed with screw holes on the backboard 6. Moreover, the process of forming the shape for exclusive use for supporting a hook part with respect to the backboard 6 is not required independently.
Therefore, the sheet 51 can be formed while suppressing high cost.

Further, the back board 6 and the trim cover 5 can be integrated by engaging the fastener 7a and the fastener 7b.
The position where the fastener 7a and the fastener 7b are engaged is at a position where the outer side surfaces of the seat 51, such as the left side surface 2c, the upper surface 2d, and the right side surface 2e, are easily visible.
Thereby, the mounting operation of the backboard 6 is very easy.

The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention.
The connection at the lower part of the trim cover 5 and the backboard 6 may be a connection not by the hook engaging portion 8 but by a connection between the line fasteners of the open fasteners.

DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat back 2a Front surface (backrest surface), 2b Bottom surface, 2c Left side surface 2d Upper surface (front end surface), 2e Right side surface, 2f Rear surface (back surface)
3 Seat Back Frame 4 Pad 5 Trim Cover, 5a, 5b Edge 6 Backboard 6a Edge, 6c Base Material, 6d Skin Material, 6T Intermediate 6T1 Molding Intermediate 7 Fastener 7a, 7b Fastener (Line Fastener), 7a1 7b1 Folding part 8 Hook engaging part, 8a Hook, 8b Hook receiving part 9 Adhesive, 9a Pool, 9b Adhesive layer 10 Original sheet forming apparatus 11, 13 Reel 12a, 12b, 14, 14a, 25 Roller, 15 Guide Roller 16-20 Drying roller, 21, 22 Tension applying roller 23 Product reel 26 Heating device, 26a Loading unit, 26b Heating heater 27 Molding machine, 27a Male mold, 27b Female mold 28 Cutting machine 31, 33-35 Sewing thread 51 Sheet ( Vehicle seat)
AH strong press part, AS, AS1, AS2 weak press part P1-P4 position

Claims (6)

A backboard mounting structure in a seat back having a trim cover that covers a backrest surface and a backboard that covers a back surface opposite to the backrest surface,
A first wire fastener attached to an edge on the back side of the trim cover;
A soft part that is softer than other parts and sewable at an edge of the backboard side of the backboard, and a second line fastener that can be sewn to the soft part and coupled to the first line fastener. When,
Have
A backboard mounting structure in which the first line fastener and the second line fastener are coupled and the backboard is mounted on the trim cover.   The said 1st line fastener and the said 2nd line fastener are provided ranging over the one side surface of the width direction in the said seat back, a front end surface, and the other side surface. Backboard mounting structure.   The backboard mounting structure according to claim 1 or 2, wherein the soft portion is formed to have a lower degree of compression than the other portions. A vehicle seat having a seat cushion and a seat back,
A trim cover that covers a backrest surface of the seat back;
A backboard covering a back surface opposite to the backrest surface in the seat back;
A first wire fastener attached to an edge on the back side of the trim cover;
A soft part that is softer than other parts and sewn at the edge of the backboard side of the backboard, and a second line fastener that can be sewn to the soft part and coupled to the first line fastener When,
Have
The vehicle seat, wherein the first line fastener and the second line fastener are coupled to each other so that the trim cover and the backboard are integrated.   The said 1st line fastener and the said 2nd line fastener are provided ranging over the one side surface of the width direction in the said seat back, a front end surface, and the other side surface. Vehicle seat.   The vehicle seat according to claim 4 or 5, wherein the soft portion is formed with a lower degree of compression than the other portions.

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