Cover for covering a block of elastically compressible padding for a motor vehicle seat cushion

Abstract

The invention relates to a cover (1) for covering a block (2) of elastically compressible padding for a cushion (11) of a motor vehicle seat (3), the cover being based on a fabric knit with a first thermoplastic yarn, the cover being provided with at least one anchoring element (4) resulting from knitting the cover so that it is formed in part from the first yarn, the anchoring element further comprising a second thermoplastic yarn knit with the first yarn, the second yarn having a lower melting point than the first yarn, the second yarn having been melted so that the anchoring element is made up of the first yarn in the non-molten state and the second yarn in the molten state, the anchoring element being stiffened by the melting of the second yarn.

Description

[0001] DESCRIPTION

[0002] Title: Covering cap for an elastically compressible padding block of motor vehicle seat padding

[0003] The invention relates to a covering cap for an elastically compressible padding block of motor vehicle seat padding, padding comprising such a covering, a seat comprising such a covering and a method for producing such a covering.

[0004] It is known to produce a covering cap for an elastically compressible padding block of motor vehicle seat padding, said cap being based on textile knitted with a first thermoplastic yarn, said cap 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 a return of said cap towards said block.

[0005] One advantage of making a headdress by knitting is that it can be given a three-dimensional shape capable of matching the shape of the padding block, which makes it possible to avoid, or limit, sewing operations aimed at combining a plurality of formats of covering material.

[0006] Furthermore, the presence of anchoring elements makes it possible to ensure that the cap is fixed to the padding block and / or the frame while allowing it to be placed on said block, particularly in the concave area.

[0007] Usually, an anchoring element is associated with the cap by a means of fixation such as a seam, which complicates its production.

[0008] Furthermore, the integration of the anchoring element into the cap may be visible on its appearance, which is unsightly.

[0009] The invention aims to overcome these drawbacks. To this end, and according to a first aspect, the invention proposes a covering cap for an elastically compressible padding block of motor vehicle seat padding, said cap being based on textile knitted with a first thermoplastic yarn, said cap 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 a return of said cap towards said block, said cap having the following characteristics:

[0010] • said anchoring element is produced by knitting said cap so as to be formed in part from said first thread,

[0011] • 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,

[0012] • said second wire has undergone melting 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.

[0013] With the proposed arrangement, the anchoring element being produced during the knitting operation of the headdress, the production is simplified, in particular by avoiding a sewing operation.

[0014] Furthermore, the anchoring element is not visible in front of the appearance of the cap.

[0015] 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 great robustness of said element.

[0016] According to other aspects, the invention provides padding comprising such a cover, a seat comprising such a cover and a method for producing such a cover. Other features and advantages of the invention will appear in the following description, given with reference to the attached figures, in which: [Fig. 1] is a schematic perspective view of a cover provided with a peripheral anchoring element according to one embodiment,

[0017] [Fig. 2] is a schematic view in partial section of a seat provided with the cover of Figure 1,

[0018] [Fig.3] is a partial schematic sectional view of a padding provided with a cap comprising a non-peripheral anchoring element according to one embodiment.

[0019] With reference to the figures, a cover 1 is described for covering a block 2 of elastically compressible padding of padding 11 of a seat 3 of a motor vehicle, said cover being based on textile knitted with a first thermoplastic yarn - for example polyester -, 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 a return of said cover towards said block, said cover having the following characteristics:

[0020] • said anchoring element is produced by knitting said cap so as to be formed in part from said first thread,

[0021] • said anchoring element further comprises a second thermoplastic yarn - for example polyester modified so as to lower its melting point - knitted with said first yarn, said second yarn having a lower melting point than said first yarn,

[0022] • said second wire has undergone melting 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.

[0023] According to the embodiment shown in figures 1 and 2, an anchoring element 4 is arranged on the periphery of the cover 1, in particular so as to provide anchoring on a metal frame 6 of the seat, as will be seen later. According to the embodiment shown, the anchoring element 4 extends along one entire side of the cover 1.

[0024] According to the embodiment shown in figure 3, an anchoring element 4 is arranged outside the periphery of the cover 1, in particular so as to provide an anchoring on the block 2 of padding of the padding 11 of the seat 3, as will be seen later.

[0025] Such an arrangement makes it possible to recall the cover 1 towards the padding block 2 in the non-peripheral zone, in particular in the concave zone so as to avoid pocketing of said cover.

[0026] 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 an anchoring part.

[0027] According to the embodiment shown in figure 2, the beaded zone 7 is provided with a co-knitted overlayer 8.

[0028] According to the embodiment shown in Figure 2, the thin zone 12 is of lesser thickness than the cap part 1 adjoining the anchoring element 4, the beaded zone 7 having a thickness similar to said cap part.

[0029] We will now describe, with reference to Figure 3, a padding 11 for a seat 3 of a motor vehicle comprising such a cover 1, 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 complementary anchoring element 5 hooking onto an anchoring element 4 so as to return said cover towards said block.

[0030] According to the embodiment of Figure 3, a complementary anchoring element 5 comprises an elastically deformable Q-shaped attachment part 9 arranged so as to allow forceful insertion of the anchoring element 4 inside and its retention in said attachment part.

[0031] According to the embodiment of Figure 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.

[0032] We will now describe, with reference to Figure 2, a motor vehicle seat 3 comprising a cover 1 provided with an anchoring element 4 arranged 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.

[0033] Finally, a method for producing such a cap 1 is described, said method comprising the following steps:

[0034] • knitting a cap 1 with a first thermoplastic yarn, said cap being provided with at least one anchoring element 4 resulting from knitting of said cap, said knitting further using at said element a second thermoplastic yarn having a lower melting point than said first yarn,

[0035] - heating 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

CLAIMS 1. Cover (1) for covering a block (2) of elastically compressible padding of padding (11) of a motor vehicle seat (3), said cover being made from a textile knitted 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 a return of said cover towards said block, said cover being characterized in that: • said anchoring element is produced by knitting said cap so as to be formed in part from said first thread, • 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 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.

2. Cover (1) according to claim 1, characterized in that an anchoring element (4) is arranged on the periphery of said cover.

3. Cover (1) according to one of the preceding claims, characterized in that an anchoring element (4) is arranged outside the periphery of said cover.

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 an anchoring part.

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

6. Padding (11) for a motor vehicle seat 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 complementary anchoring element (5) hooking onto an anchoring element (4) so ​​as to return said cover towards said block.

7. Padding (11) according to claim 6, characterized in that a complementary anchoring element (5) comprises an elastically deformable Q-shaped attachment part (9) arranged so as to allow forceful insertion of the anchoring element (4) inside and its retention in said attachment part.

8. Padding (11) according to 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 fitted, said seat further comprising a metal frame provided at its periphery with a complementary anchoring element (5) receiving an anchoring element (4).

10. Method for producing a cap (1) according to any one of claims 1 to 5, 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 said element a second thermoplastic yarn having a lower melting point than said first yarn, • heating said cap 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.

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