WO2007045334A2

WO2007045334A2 - Upholstery of an automotive seat

Info

Publication number: WO2007045334A2
Application number: PCT/EP2006/009350
Authority: WO
Inventors: Robert SCHÜLE; Hans Schmodde
Original assignee: Johnson Controls Gmbh
Priority date: 2005-10-19
Filing date: 2006-09-26
Publication date: 2007-04-26
Also published as: DE102005050409A1; WO2007045334A3; DE102005050409B4

Abstract

The invention relates to the upholstery of an automotive seat with an upholstery part which comprises at least one fastening means with a first and a second force element, the distance of the snap-in locking elements relative to each other being adjustable. The invention also relates to a method for producing an upholstery part, to an automotive seat and to a method for producing the automotive seat.

Description

Upholstery of a motor vehicle seat

The present invention relates to the upholstery of a motor vehicle seat with a cushion part which has at least one fastening means with a first and a second force means, wherein the distance of the latching means is mutually variable. Furthermore, the present invention relates to a method for producing a cushion part, a motor vehicle seat and a method for producing the motor vehicle seat.

In motor vehicle seats with a padding, as e.g. From DE 4220 685 A1, the problem often arises of so-called "bridging", in which the padding, for example foam, separates from the metal structure of the seat and thereby forms a cavity between the padding and the seat structure , which occur during use of the motor vehicle, air is constantly sucked into this cavity or pushed out of the cavity, whereby an unwanted noise results.At present, the "briding" effect is corrected by reworking the foam tools in the prototype phase. However, this procedure is comparatively complicated.

It was therefore the object of the present invention to provide a padding of a motor vehicle seat which does not have the disadvantages of the prior art, i. in particular no briding occurs.

The object is achieved with a padding of a motor vehicle with a cushion part, wherein the cushion part has at least one fastening means with a first and a second latching means, wherein the distance of the latching means is mutually variable.

It was extremely surprising for the person skilled in the art and not to be expected that the so-called briding effect no longer occurs in the case of the upholstery according to the invention. The padding of the invention is simple and inexpensive to manufacture and particularly easy to connect with a motor vehicle seat structure or with a reference that is located above the padding.

BESTATIGUNGSKOPIE According to the invention, the cushion part has at least one, preferably a plurality of fastening means which are provided with a first and a second latching means.

Furthermore, according to the invention, the distance of the locking means is mutually variable. Preferably, the change in the distance between the two locking means to each other on a permanent (irreversible) and / or a temporary (reversible) share.

Preferably, the cushion part has a first and a second surface, wherein the first locking means in the region of the first surface, and the second locking means in the region of the second surface is arranged.

Preferably, the fastening means is positively, positively and / or materially connected to the cushion part. In a particularly preferred embodiment of the present invention, the fastening means is at least partially cohesively connected to the cushion part. Most preferably, the material is closed by foaming the fastening means with foam, for example polyurethane (PU) foam, from which the pole part is made.

Preferably, a spring means is arranged between the two locking means. With this spring means the distance between the two locking means can be changed. This change in distance may have a permanent component, which then settles in a bias of the spring means. Furthermore, the bias may have a temporarily variable component, which then results from the remaining spring travel.

Further preferably, a length adjustment means is arranged between the force means, with which the locking means is adjustable to the respective desired length. This embodiment has the advantage that a universal fastening means can be used, which is then set for the particular application to the particular desired length. Particularly preferably, the fastening means on the length adjustment still resilient properties, so as not to affect the comfort of the upholstery Most preferably, the spring means and the length adjustment means are realized as one component. This can for example follow in the form of a spring, in which the length determination is realized by a bias and the suspension by the remaining spring travel.

Preferably, at least one of the latching means is at least partially folded to at least one degree of freedom. This preferred embodiment of the present invention is particularly suitable for components in which the seat structure and the seat surface are not parallel but at an angle to each other. Furthermore, it is avoided by this preferred embodiment of the present invention that the fastening means is not mechanically loaded in a torque.

Further preferably, the present invention comprises a plurality of fastening means. Particularly preferably, these fastening means are then interconnected, most preferably with a band which is made of foam. This embodiment of the present invention has the advantage that the fastening means can be inserted more quickly into a mold to be foamed out, and thus the padding according to the invention can be produced more quickly, as will be described in detail below.

Another object of the present invention is a method for producing the padding according to the invention, in which the fastener is inserted into a mold, closed the mold and then foamed the mold while the spring means and / or the length adjustment is foamed.

Preferably, the fastening means are compressed prior to foaming of the mold, that is changed in their length. This embodiment of the method according to the invention has the advantage that a universal fastening means can be used, whose length is then adjustable to the particular application. The change in length is preferably irreversible in this case. The skilled artisan will recognize that the fastener is not should be compressed so far that it no longer has a resilient portion, because thereby the comfort of the padding is reduced.

Another object of the present invention is a motor vehicle seat with a seat structure and a cover, wherein between the seat structure and the cover, the cushion member according to the invention is arranged.

The motor vehicle seat according to the invention is simple and inexpensive to produce. The bridging effect does not occur in the motor vehicle seat according to the invention.

The first latching means is preferably connected to the seat structure and the second latching means is connected to the cover.

Further preferably, the seat structure has at least one recess into which the respective latching means engages.

In a further preferred embodiment of the motor vehicle seat according to the invention, the cushion part has a plurality of cushion areas of different hardness. The cushion areas are then separated by the connecting means between the fastening means. This embodiment of the present invention has the advantage that cushion areas of different hardness can be achieved simply and inexpensively, and that these areas are maintained during use of the motor vehicle.

Preferably, the seams in the reference are connected to the connecting means. This preferred embodiment of the present invention has the advantage that the seams are located in the right place and do not blur in the course of using the seat on the seat.

Another object of the present invention is a method for producing the motor vehicle seat according to the invention in which the cushion member placed on the seat structure and the reference to the cushion member and the cushion member is compressed so that the latching means engage in the seat structure and in the reference. Preferably, the cover is sewn to the underside with a wire which is then interlocked with the fasteners to stabilize the cover on the padding.

The invention is explained below with reference to FIGS. 1-7. These explanations are merely exemplary and do not limit the general inventive concept. The explanations apply equally to all subjects of the invention.

Fig. 1 shows an embodiment of the padding according to the invention.

Fig. 2 shows a further embodiment of the padding according to the invention.

Fig. 3 shows an embodiment of the fastening means.

4 shows a further embodiment of the fastening means according to the invention.

Fig. 5 shows a tool for producing the padding according to the invention.

Fig. 6 shows a roller belt having the fastening means.

Fig. 7 shows a padding with areas of different hardness.

In Figure 1, the padding of the invention is shown, which has a cushion part 2, for example made of polyurethane foam, in which a fastener 1 is cohesively arranged. The fastening means has a first and a second latching means 3, 6, which are interconnected by a spring means 7. The spring means 7 is also a Längenverstellmittel with which the distance a between the two locking means can be changed. This change in the distance a can be done for example by a compression of the fastening means and thus a bias of the spring means 7. In the region of the first and the second latching means 3, 6, the foam part 2 recess 19 to the Connection of the locking means with the seat structure 5 and the seat cover 17 to facilitate. The locking means 3 is arranged in the region of the first surface 13 of the cushion part 2 and can be latchingly connected to a recess 4 which is located in the seat structure 5. The latching means 6 is arranged in the region of the second surface of the cushion part and can be latchingly connected to a hook 18 which is arranged on the cover 17.

FIG. 2 shows a further embodiment of the padding according to the invention. Essentially, the padding 2 according to Figure 2 corresponds to the padding according to Figure 1, wherein in the present case, the distance between the two locking means 3, 6 to each other by two telescopically plugged cylinder is realized. These cylinders either have a certain amount of friction with one another or are provided with detents, for example in the case of cable ties, so that the distance once set between the two locking means does not change. The skilled person understands that this embodiment of the Befestigungsmitteins should be made resilient, so as not to affect the comfort of the upholstery.

FIG. 3 shows a further embodiment of the fastening means. In the present case, the spring means or the length adjustment means 7, 15 is designed as a double helix, which can be biased to change the length and in which the resilient effect is realized by the permanent spring travel.

The fastening means according to FIG. 4 essentially corresponds to the fastening means according to FIG. 3, wherein the double helix is designed in this case as a single helix. Incidentally, reference is made to the embodiment according to FIG.

FIG. 5 shows a molding tool 10, which consists of a lower tool 8 and an upper tool 9, with which the padding according to the invention can be produced. First of all, a plurality of fastening means 1, which are interconnected by a foam tape 12, inserted into the mold. The connection of the fastening means to each other by a foam tape has the advantage that a plurality of fastening means can be inserted simultaneously into the tool, which considerably reduces the production cycles. Then the tool is closed, wherein the fastening means 1 is compressed during closing and thus the later desired distance a between the first and the second locking means is adjusted. Furthermore, the latching means 3 is folded α in a certain angle when inserting the fastening means, so that it is easier later attached to the seat structure. After the mold has been closed, the foam 11 is filled into the mold and the tool 10 is foamed while the foaming agent 1 is foamed. After foaming and curing of the foam, the padding can be removed from the farm tool 10.

Figure 6 shows fasteners 1, which are offered in the present case as a roll. The fastening means 1 are connected to each other by means of the foam tape 12. The foam tape 12 has predetermined breaking points 16, at which the foam tape can be easily separated. The skilled artisan recognizes that the predetermined breaking points do not necessarily have to be present, but the foam tape between the fastening means 1 can also be cut apart.

7 shows a padding part 2, the padding part in the present case having two different hardnesses 2 ', 2 ". While a greater hardness is desired in the area of the side cheeks 2 ^" , the area 2 ^{' has} a lower hardness by a higher one To realize seating comfort. The regions 2 ', 2 "are separated from one another by a foam tape 12, which preferably has fastening means 1 at preferably regular intervals, These foam tapes and the associated fastening means prevent the contour of the seat from being changed over time and the regions 2 ^'. and 2 ^" into each other. In a preferred embodiment, a wire (not shown) sewn to the cover located above the upholstery member 2 (not shown), which is interlocked with the attachment means 1, so that the seams in the cover are along the boundary between the two portions run and the seam does not change. LIST OF REFERENCE NUMBERS

1 fastener

2 upholstered part

2 ^' section of the upholstery part

2 "section of the upholstery

3 locking means

4 recess

5 seat structure

6 locking means

7 spring means

8 lower tool

9 upper tool

10 foam tool

11 foam, PU foam

12 foam tape

13 First surface of the upholstery part

14 Second surface of the upholstery part

15 length adjustment

16 predetermined breaking point in the foam tape

17 reference

18 fasteners on the cover

19 recess in the upholstery part a distance α angle

Claims

claims:

1. upholstery of a motor vehicle seat with a Polterteil (2), characterized in that the cushion part at least one fastening means (1) having a first and a second latching means (3, 6), wherein the distance (a) of the latching means (3, 6 ) mutually variable.

2. Upholstery according to claim 1, characterized in that the cushion part (2) has a first and second surface (13, 14), that the first latching means (3) in the region of the first surface (13) and that the second latching means ( 6) in the region of the second surface (14) is arranged.

3. Upholstery according to one of the preceding claims, characterized in that the fastening means (1) is positively, positively and / or materially connected to the cushion part (2).

4. padding according to one of the preceding claims, characterized in that between the locking means (3, 6), a spring means (7) is arranged.

5. padding according to one of the preceding claims, characterized in that between the locking means (3, 6) is arranged a length adjustment means (15).

6. padding according to claim 4 and 5, characterized in that spring means and the length adjustment means are realized as a component.

7. Padding according to one of the preceding claims, characterized in that at least one latching means (3, 6) is arranged at least partially tiltable by at least one degree of freedom.

8. Upholstery according to one of the preceding claims, characterized in that it comprises a plurality of fastening means (1) which are interconnected.

9. padding according to claim 8, characterized in that the fastening means (1) with a foam tape (12) are interconnected.

10. A method for producing the upholstery part according to one of the preceding claims, characterized in that the fastening means (1) inserted into a mold (10), the mold (10) is closed and then foamed the mold while the spring means (7) and / or the length adjustment means (15) is foamed.

11. The method according to claim 10, characterized in that the fastening means (1) is compressed prior to foaming of the mold.

12. Motor vehicle seat with a seat structure (5) and a cover (17), characterized in that between the seat structure and the cover a cushion part is arranged according to one of the preceding claims.

13. Motor vehicle seat according to claim 10, characterized in that the first latching means (3) with the seat structure (5) and the second latching means (6) with the reference (17) is connected.

14. Motor vehicle seat according to claim 13, characterized in that the seat structure has a recess (4) into which the latching means (3) engages.

15. Motor vehicle seat according to one of the preceding claims, characterized in that the cushion part (2) a plurality of cushion areas (2 ^' , 2 ^" ) of different hardness and that the cushion areas (2 \ 2") by the connecting means (12) between the fastening means from each other are separated.

16. Motor vehicle seat according to one of the preceding claims, characterized in that the seams in the reference (17) with the fastening means (1) is connected.

17. A method for producing the motor vehicle seat according to one of the preceding claims, characterized in that the cushion part (2) placed on the seat structure (5) and the reference to the cushion part and the cushion part is compressed, so that the latching means (3, 6) engage in the seat structure (5) and in the cover.

18. The method according to claim 17, characterized in that on the reference (17) a wire is arranged, which is connected to the fastening means (1).