Cover cap of an elastically compressible padding block for motor vehicle seat cushioning

Abstract

The invention relates to a cover (1) for a block (2) of elastically compressible padding for the seat cushion (11) of a motor vehicle, said cover being made of a knitted textile with a first thermoplastic yarn, said cover being provided with at least one anchoring element (4) knitted from said cover so as to be formed partly from said first yarn, said anchoring element further comprising a second thermoplastic yarn knitted with said first yarn, said second yarn having a lower melting point than said first yarn, said second yarn having been melted so that said anchoring element is composed of said first yarn in its unmelted state and said second yarn in its molten state, said anchoring element being stiffened by the melting of said second yarn. Figure 2

Description

Title of the invention: Cover for an elastically compressible padding block for motor vehicle seat cushions

[0001] The invention relates to a cover for a block of elastically compressible padding for a motor vehicle seat, a seat comprising such a cover, a seat comprising such a cover and a method for making such a cover.

[0002] It is known to produce a cover for a block of elastically compressible padding for a motor vehicle seat cushion, said cover being made of knitted textile with a first thermoplastic yarn, said cover being provided with at least one anchoring element intended to attach to a complementary anchoring element from said block or from a frame of said seat to ensure that said cover is pulled back towards said block

[0003] One advantage of producing a head covering by knitting is the ability to give it a three-dimensional shape capable of conforming to the shape of the padding block, which makes it possible to avoid, or limit, sewing operations aimed at joining together a plurality of formats of covering material.

[0004] Furthermore, the presence of anchoring elements makes it possible to ensure that the headgear is fixed to the padding block and / or the frame while allowing it to be pressed against said block, particularly in concave areas.

[0005] Usually, an anchoring element is associated with the cap by a means of attachment such as a seam, which complicates its production.

[0006] Moreover, the integration of the anchoring element into the cap may be visible on its appearance face, which is unsightly.

[0007] The invention aims to overcome these drawbacks.

[0008] To this end, and according to a first aspect, the invention proposes a cover for a block of elastically compressible padding for a motor vehicle seat, said cover being made of knitted textile with a first thermoplastic yarn, said cover being provided with at least one anchoring element intended to hook onto a complementary anchoring element from said block or from a frame of said seat to ensure that said cover is pulled back towards said block, said cover having the following characteristics: • said anchoring element is produced by knitting said headgear in such a way as to be formed in part from said first yarn, • said anchoring element further comprises a second thermoplastic wire knitted with said first yarn, said second yarn having a lower melting point than said first yarn, • said second wire has undergone a melting process so that said anchoring element is composed of said first wire in the unmelted state and said second wire in the molten state, said anchoring element being stiffened by the melting of said second wire.

[0009] With the proposed arrangement, the anchoring element being derived from the knitting operation of the headgear, the production is simplified, in particular by avoiding a sewing operation.

[0010] Moreover, the anchoring element is not visible from the front of the cap.

[0011] Finally, the second wire in the molten state creates a crust which allows the stiffening of the anchoring element, which ensures good anchoring capacity and high robustness of said element.

[0012] According to other aspects, the invention proposes a padding comprising such a headboard, a seat comprising such a headboard and a method for making such a headboard.

[0013] Other features and advantages of the invention will become apparent from the following description, made with reference to the accompanying figures, in which:

[0014] [Fig. 1] is a schematic perspective view of a cap provided with a peripheral anchoring element according to one embodiment,

[0015] [Fig.2] is a schematic partial cross-sectional view of a seat equipped with the seat cover the [Fig.l],

[0016] [Fig.3] is a partial schematic cross-sectional view of a padding provided with a headgear including a non-peripheral anchoring element according to a design.

[0017] With reference to the figures, a cover 1 for a block 2 of elastically compressible padding of a seat 3 of a motor vehicle is described, said cover being made of knitted textile with a first thermoplastic yarn - for example polyester -, said cover being provided with at least one anchoring element 4 intended to hook onto a complementary anchoring element 5 from said block or from a frame 6 of said seat to ensure that said cover is pulled back towards said block, said cover having the following characteristics: • said anchoring element is produced by knitting said headgear in such a way as to be formed in part from said first yarn, • said anchoring element further comprises a second thermoplastic yarn - for example, made of polyester modified to lower its melting point - knitted with said first yarn, said second yarn having a lower melting point than said first yarn, • said second wire has undergone a melting process such that said anchoring element is composed of said first wire in its unmelted state and said second wire in its melted state melted, the said anchoring element being stiffened by the melting of the said second wire.

[0018] According to the embodiment shown in figures 1 and 2, an anchoring element 4 is arranged around the periphery of the cap 1, in particular so as to provide anchoring on a metal frame 6 of the seat, as will be seen later.

[0019] According to the embodiment shown, the anchoring element 4 extends along one entire side of the cap 1.

[0020] According to the embodiment shown in [Fig.3], an anchoring element 4 is disposed outside the periphery of the headgear 1, in particular so as to provide an anchoring on the padding block 2 of the padding 11 of the seat 3, as will be seen later.

[0021] Such an arrangement allows the cap 1 to be brought back towards the padding block 2 in a non-peripheral area, in particular in a concave area so as to avoid sagging of said cap.

[0022] According to the embodiments shown, an anchoring element 4 has a thin zone 12 and a beaded zone 7 extending along its free edge, said beaded zone forming part of the anchoring.

[0023] According to the embodiment shown in [Fig.2], the beaded area 7 is provided with a co-knitted overlayer 8.

[0024] According to the embodiment shown in [Fig.2], the thin zone 12 is less thick than the part of the cap 1 adjoining the anchoring element 4, the beaded zone 7 having a thickness similar to said part of the cap.

[0025] With reference to [Fig.3], a seat cushion 11 of a motor vehicle comprising such a cover 1 is now described, said cushion further comprising a block 2 of elastically compressible padding, said cover being fitted onto said block, said block being provided with at least one additional anchoring element 5 hooking onto an anchoring element 4 so as to pull said cover towards said block.

[0026] According to the embodiment of [Fig.3], a complementary anchoring element 5 comprises a generally Q-shaped elastically deformable hooking part 9 arranged to allow the anchoring element 4 to be forcibly inserted inside and held in said hooking part.

[0027] According to the embodiment of [Fig.3], the padding block 2 is based on molded foam, a complementary anchoring element 5 comprising a fixing part 10 in the foam, said part being overmolded by said block.

[0028] We now describe, with reference to [Fig.2], a motor vehicle seat 3 comprising a cover 1 provided with an anchoring element 4 disposed at its periphery and a block 2 on which said cover is fitted, said seat further comprising a metal frame 6 provided at its periphery with a complementary anchoring element 5 - here in the form of a groove - receiving said anchoring element.

[0029] Finally, a method for manufacturing such a headpiece 1 is described, said method comprising the following steps: • knitting a cap 1 with a first thermoplastic yarn, said cap being provided with at least one anchoring element 4 resulting from knitting said cap, said knitting further using at the level of said element a second thermoplastic yarn having a lower melting point than said first yarn, - heat said cap - in particular in an oven - to a temperature higher than the melting temperature of said second wire and lower than the melting temperature of said first wire, so as to melt said second wire to stiffen said anchoring element.

Claims

Demands

1. Cover (1) for a block (2) of elastically compressible padding for the cushioning (11) of a motor vehicle seat (3), said cover being made of a knitted textile with a first thermoplastic yarn, said cover being provided with at least one anchoring element (4) intended to attach to a complementary anchoring element (5) from said block or from a frame (6) of said seat to ensure that said cover is pulled back towards said block, said cover being characterized in that: • said anchoring element is knitted from said cover so as to be formed partly from said first yarn, • said anchoring element further comprises a second thermoplastic yarn knitted with said first yarn, said second yarn having a lower melting point than said first yarn,• said second wire has undergone melting such that said anchoring element is composed of said first wire in its unmelted state and said second wire in its molten state, said anchoring element being stiffened by the melting of said second wire.

2. Cap (1) according to claim 1, characterized in that an anchoring element (4) is disposed on the periphery of said cap.

3. Cap (1) according to any one of the preceding claims, characterized in that an anchoring element (4) is disposed outside the periphery of said cap.

4. Cap (1) according to any one of the preceding claims, characterized in that an anchoring element (4) has a thin zone (12) and a beaded zone (7) extending along its free edge, said beaded zone forming part of the anchoring.

5. Cap (1) according to the preceding claim, characterized in that the beaded area (7) is provided with a co-knitted overlayer (8).

6. Motor vehicle seat padding (11) comprising a cover (1) according to any one of the preceding claims, said padding further comprising a block (2) of elastically compressible padding, said cover being fitted onto said block, said block being provided with at least one additional anchoring element (5) hooking onto an anchoring element (4) so ​​as to pull said cover towards said block.

7. Matelassure (11) according to claim 6, characterized in that a complementary anchoring element (5) comprises a generally Q-shaped elastically deformable hooking part (9) arranged to permit the anchoring element (4) to be forcibly inserted inside and retained in said hooking part.

8. Mattress (11) according to any one of claims 6 or 7, characterized in that the padding block (2) is based on molded foam, a complementary anchoring element (5) comprising a fixing part (10) in the foam, said part being overmolded by said block.

9. Motor vehicle seat (3) comprising a cover (1) according to claim 2 and a block (2) on which said cover is mounted, said seat further comprising a metal frame provided at its periphery with a complementary anchoring element (5) receiving an anchoring element (4).

10. A method for producing a headpiece (1) according to any one of claims 1 to 5, said method comprising the following steps: • knitting a headpiece (1) with a first thermoplastic yarn, said headpiece being provided with at least one anchoring element (4) resulting from knitting said headpiece, said knitting further using at the level of said element a second thermoplastic yarn having a lower melting point than said first yarn, • heating said headpiece to a temperature higher than the melting temperature of said second yarn and lower than the melting temperature of said first yarn, so as to melt said second yarn to stiffen said anchoring element.

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