FR2636057A1 - Improvement to the method of forming lines for pulling a fitting cover towards the padding of a seat - Google Patents

Abstract

Method of forming lines for pulling a fitting cover towards the padding of a seat in which the cover is fixed to a stuffing strip 9 integral with a rigid element 10, characterised in that the rigid element 10 is previously extruded along one edge of the strip and partly extends on either side of the said edge in order to form, along this same edge, two support zones for the element on the opposite face of the padding 3 which are adjacent to the edges of a slit 6 for mounting the said element through this padding.

Description

IMPROVEMENT TO THE FORAGE PROCESS OF
REMINDER LINES OF A DRESSING CAP TO THE
MATTRESS OF A SEAT AND SEAT OBTAINED
The invention relates to a method for forming return lines from a covering cap to the padding of a seat and relates more specifically, but not exclusively, to a method applicable to the manufacture of motor vehicle seats.

 The information also relates to a cushion or a seat back produced by this method.

In order to ensure good hold of the cover and an aesthetic appearance to the seat, it is customary to produce hollow lines obtained by the surface of the cover of the backrest and / or of the cushion on which the seat occupant is supported. a reminder of the cover to the opposite side of the backrest and / or the cushion.

The publications FR-A 1,388,700 and 1,293,661 describe a method according to which the cap is sewn to a folded trim strip to form a retention loop of a rod used for hanging the latter on a member of 1 seat frame (shell, suspension ply) through; padding, by means of chains fitted with staples.

The publication FR-A 2.596.626 describes a means for returning the cap constituted by a band sewn to the cap secured to a rigid element carrying hooking means distributed along the length of said element to cooperate with an insert constituted by a polyamide fabric embedded inside the padding.

The realization of such recall lines is a long and delicate operation.

The present invention proposes to simplify the known confection methods according to which a line of return of the cap is formed by a flexible band, capable of being pulled towards the inside of the padding by a rigid element and is characterized by the fact that the rigid element is previously extruded along one edge of the strip and extends in part, on either side, of said edge to form along this same edge two support zones This element on the opposite face of the padding which are adjacent to the edges of a mounting slot of said element through this padding.

Other characteristics and advantages of the invention will appear on reading the description made with reference to the appended drawing in which - Figure 1 is a perspective view of a backrest of this rear seat
comprising several reminder lines developed according to the invention, - Figure 2 is a partial sectional view of the file at a
return line, - Figure 3 is a perspective view of the packing strip and
1 rigid element extruded along an edge of said strip.

The description which follows and which concerns the file is equally valid for the cushion.

The seat back shown in FIG. 1 is constituted by a back wall or shell I. It should be noted that the shell 1 could just as easily be replaced by a conventional upright frame.

As shown in Figure 2, the wall 1 carries a suspension ply 2 on which is disposed a niatelassure 3 covered with a covering cap 4. The padding 3 can, if necessary, include an internal reinforcement 5 and take directly support on the bottom of the shell or on the wall 1.

The padding 3 carries a certain number of slots 6 through which the return lines 7 of the covering cap 4 are carried, carried by the support zone and arranged transversely by ratnrt to the longitudinal axis of the seat. In the drawing, four identical reference lines have been shown, one of which is described with reference to FIG. 2.

According to the figure, the covering cap 4 is secured by means of a seam to a band. This lining 9 yes can be made, for example, by a polyamide fabric whose edge carries a rigid element 10 made up, meanwhile, nar a mixture of polyethylene and polypropylene previously extruded along said edge before mounting on the cap.

According to the invention, the rigid element 10 is connected substantially along its axis lor? Itudina! median at the edge of the strip 9 in order to form Ic along this same edge, two support zones 11, 11 'located in this way, on either side, thereof.

The zones C'aooui 11, 11 'of the element 10 rest on the opposite face 12 of the padding 3 adjacent to the edges of the slot 6.

Claims (3)

1 / Method for formatting files of a dressing cap  towards the padding of a seat, in which the cap is fixed to  a trim strip (9) integral with a rigid element (10),  characterized in that the rigid element (10) is previously  extruded along one edge of the strip and extends in part from  on either side of said edge to form along that same edge  two zores of support of the element on the opnosed face of the  padding (3) which are adjacent to the edges of a slot (6) of  mounting of said element through this padding. 2 / A method according to claim 1, characterized in that the  trim strip and the rigid element are made from  different materials. 3 / Seat produced according to all of claims 1 and 2,  characterized in that the extension lines (7) are carried  by the support zone and arranged transversely to  The longitudinal axis of the seat.