JPH0537840Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a type of seat that has a stepped portion along the longitudinal direction in the seating portion or backrest portion of an automobile seat. This invention relates to a vehicle seat with improved stitching.

[Prior Art] As is well known in the past, trim covers that cover the surfaces of automobile seats are increasingly being divided into a plurality of pieces and sewn together into a three-dimensional shape. Among these devices, some have appeared that have a stepped portion D in a portion of the seating portion 1, as shown in FIG. 4, for the purpose of achieving a more sophisticated design.

In this type of piece, the step piece 2 is first sewn together with the adjacent side piece 3 on both sides, and its front end is sewn together with the front piece 4, which is another piece. FIG. 5 shows a cross section of the step piece 2 and the side piece 3 being sewn together. According to this, step piece 2
The side pieces 3 are sewn together with the side edges of both side pieces 3 folded back downwards, and the level difference is obtained by folding them back.

Next, the front piece 4 is sewn together. In other words, turn the front piece 4 upside down and insert both side pieces 3 along the rear side edge.
and sew to the front edge of the step piece 2, and turn the front piece 4 to the front side. In this way, the stepped portion D
Sewing work is done around the area.

[Problems to be solved by the invention] In the case of conventional sheets, when sewing together with the front piece 4, a step is maintained, so the sewing thread is visible from the outside at the step (see Fig. 5). In addition to deteriorating the appearance, there are problems in that the sewing threads loosen due to repeated cushioning operations on the sheet. Furthermore, there is also the problem that the front piece 4 is pulled toward the step D due to the difference in level, causing wrinkles S there.

In view of these conventional problems, it is an object of the present invention to provide an automobile seat that effectively prevents the loosening of sewing threads and the occurrence of wrinkles.

[Means for Solving the Problems] In order to achieve the above object, the present invention folds opposing edges of a pair of side pieces to the back side, and places both side pieces at a constant interval along the longitudinal direction. The piece for the step part is made by making the folded edges face each other and aligning the piece for the step part from the bottom side along this interval, and then sewing both side pieces and the piece for the step part along the folded edge. A method for automobiles in which a step of a predetermined height is maintained between the side piece and the front piece, and the front piece is sewn along the front edges of both side pieces and the step piece under this step. In the sheet, incisions are made from both left and right sides at predetermined positions in the seam allowance between the step piece and both side pieces, so that the front piece is sewn with the side to be sewn with the front piece reversed. The structure was such that it could be sewn together with the pieces.

[Function] The front side of the sheet configured in this way is reversed by the notches made in the seam allowances between both side pieces and the step piece, thereby making the seam between the side pieces and the step piece The difference in level has been eliminated, and in this state it is sewn to the front piece.

[Example] Hereinafter, an example embodying the present invention will be described in detail with reference to the drawings.

Fig. 1 shows a part of the seating part of an automobile seat, and the seating part 1 is made up of a plurality of pieces as in the past, and the figure shows a piece 2 for the step part,
The respective connecting parts of both side pieces 3, 3 and front piece 4 are shown. Also, each piece 2,
Reference numerals 3 and 4 are composed of a cover 5 made of cloth or the like and a covering 6 made of urethane or the like laminated on the back side of the cover 5.

The step piece 2 has a hard core material 7 affixed to the entire back surface thereof, and a hanging bag 8 is sewn in the center of the lower surface along the longitudinal direction. This hanging bag 8 has a hanging wire 9 contained therein, and by hooking it to the wire 9, the seat spring assembly (not shown) is carried out.
It plays the role of fixing.

Both side pieces 3 arranged on both the left and right sides of the step piece 2 are folded back with their mutually opposing edges having a certain folding width, and are aligned with the side edges of the step piece 2. It is stacked on the front side of the same piece 2. Then, step piece 2
and both side pieces 3 are sewn along the folded edges of both side pieces 3. The thickness of this folded portion becomes a step of a predetermined height maintained between the step piece 2 and the step portion piece 2.

In addition, at the position near the front end (close to front piece 4) of the above-mentioned sewing part, there are 10 cuts from both left and right sides up to the sewing thread.
can be entered. The front side of this notch 10 is then reversed as shown in FIG. With this reversal, the outer edges of both side pieces 3 face each other, and conversely, the step piece 2 is lifted toward the surface side of both side pieces 3, with both side edges folded inward. In this way, the step piece 2 and both side pieces 3 become substantially flush with each other, and as a result, the above-described step difference is eliminated in the inverted portion.

The front piece 4 is stacked on the front edges of the step piece 2 and both side pieces 3 with a predetermined overlap margin (sufficiently shorter than the length of the reversed portion) and sewn along the width direction. in this case,
When sewing the front piece 4, it can be sewn in almost close contact with each piece 2 and 3, so there are no wrinkles after finishing, and the situation where the sewing thread loosens over time can be avoided.

[Effects of the invention] As is clear from the above explanation, according to the invention, the difference in level between the pieces and the periphery is eliminated on the sewing side of the step piece with the front piece. The attachment condition will be good.
Therefore, wrinkles do not occur on the front piece. Further, the sewing thread is not visible between the step piece and the front piece, and furthermore, the sewing thread is effectively prevented from loosening over time, so that the appearance is maintained for a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing how each piece is sewn, and Fig. 2 is a perspective view showing how the side piece and step piece are sewn from the back side.
FIG. 3 is a cross-sectional view showing the situation after the seat is reversed, FIG. 4 is a perspective view showing the seating portion of the seat, and FIG. 5 is a cutaway perspective view showing how each piece is sewn. 1... Seating section, 2... Step piece, 3...
Side piece, 4...Front piece, 10...
Notch.

Claims (1)

[Claims for Utility Model Registration] Opposite edges of a pair of side pieces are each folded back to the back side, and both side pieces are placed so that the folded edges face each other at a constant interval along the longitudinal direction, and along this interval. After aligning the step piece from the bottom side, by sewing both side pieces and the step piece together along the folded edges, a step of a predetermined height is created between the step piece and the side piece. Under this, in an automobile seat of the type in which a front piece is sewn along the front edge of each of both side pieces and a step piece, the seam between the step piece and both side pieces In the seam allowance, the front piece is sewn with the front piece sewn with the side to be sewn reversed by cuts made from both left and right sides at predetermined positions. vehicle seat.