VEHICLE SEAT

Abstract

Vehicle seat (1) having a seat part (2) and a backrest (3), wherein the supporting structure (44) of the seat part or the backrest, in particular the side part thereof, integrally has at least one spring element (40, 31) a pivot point (P) and/or a safety belt connection.

Description

In the figures:

FIGS. 1 and 1 a schematically show the integral seat part.

FIG. 2 shows a seat shell with spring elements

FIGS. 3 and 4 show the production of the structure of the seat part according to FIGS. 1 and 1a

FIG. 5 shows a cushion with particles.

Parts that correspond to one another are provided with the same reference signs in ail of the figures.

The present invention relates to a vehicle seat 1 with a seat part 2 and a backrest 3 which is provided al the seat part in a pivotable manner so that the backrest can be removed from its use for example into an easy entry position and/or to adjust the inclination of the backrest for comfort purposes. The seat preferably comprises a longitudinal adjuster.

In the embodiment of the vehicle seat 1 according to the invention illustrated in FIG. 1, at least the structure of the seat part 2 is configured in an integral manner, i.e. made as a single part. Preferably, the seat part 2 is configured as a plastics part, in particular as a fibre-reinforced plastics part. Arranged integrally on the side part of the seat part 2 is an upper rail 43 which belongs to the longitudinal adjuster 4. Furthermore, the side part of the seat part 2 has at least one spring element 40, by way of which the height adjustment of the seat shell 41 can be brought about, in that the distance Ah between the seat shell 41 and the upper rail 43 is changed, as a result of which the spring element 40 stretches elastically or contracts. Preferably, the two spring elements 40 have different spring characteristics, with the spring in the region of the posterior of a seat occupant particularly preferably having a harder spring characteristic than the spring in the region of the thigh rest. Furthermore, a toothing 16 is provided integrally with the side part of the seat part, said toothing 16 being part of the recliner of the vehicle seat according to the invention. Moreover, the vehicle seat according to the invention integrally has two cross members 42, which connect the two side parts, arranged on the right-hand and left-hand side, of the seat part together. Furthermore, the pivot axis for the backrest 3 is arranged integrally on the seat part 2. Moreover, the seat part preferably integrally has the pivot bearing P for the backrest. The seat part 2 is also integrally equipped with a seat shell 41 and spring element 31 which is provided between the backrest and the seat part.

FIG. 28 a shows substantially the embodiment according to FIG. 28, with the adjustment of the inclination angle of the backrest 3 and the height adjustment of the seat shell being illustrated in the present case. The inclination adjuster may be a discontinuous or continuous adjuster. A movement of the lever can unlock for example the adjustment of the backrest, and the occupant then adjusts the inclination of the backrest with his body. Alternatively or in addition, the lever can drive a gearwheel which roils on the teeth 18 and as a result adjusts the inclination of the backrest. A person skilled in the art will understand that the adjustment, can also take place in a motorized manner, in that at least one and preferably two gearwheels mesh with the toothing 16. The height is adjusted preferably via a hand wheel 59 which drives for example a cam that pushes the seat shell upwards. This adjuster is provided in the front third of the seat part in order to give the seat part sufficient stability with regard to “submarining”. When the height adjuster is actuated, the springs 40 are spread. The seat shell is returned into a lowered position via the springs 40. A force transmission means 60 can be coupled to the adjusting mechanism 59, said force transmission means 60 actuating the spring in the region of the posterior .of the seat occupant when the hand wheel is actuated, and so the spring excursion of said spring is different from the spring excursion of the front spring. As a result, the expansion of the springs 40 can be executed differently.

FIG. 2 shows the seating shell 41 with spring elements 40 which are integrally provided. This reduces the number of pars needed.

FIGS. 3 and 4 show the production of the seat part. As can be seen from FIG. 3, in a tool a fiber structure is provided, which is fixed with a harz. As soon as the harz is solidified sufficiently, so that the structure does not deform anymore, it is removed from the tool and overmoulded with a plastic layer in a second tool or in a bath.

FIG. 5 shows yet another embodiment of the present invention. Here the cushion comprises a multitude of particles between the seat structure and a cover, so that the cushion adapts to the shape of the bottom and/or back of the seat occupant.

LIST OF REFERENCE SIGNS

• Vehicle seat
• Seat part
• Backrest
• Longitudinal adjusting device
• Inclination adjusting apparatus
• Adjusting lever
• Side part
• Toothing
• Spring means
• Spring means, height adjuster
• Seat shell
• Cross member
• Upper rail
• Supporting structure
• Front part of the height adjuster
• Rear part of the height adjuster, rear part of the height adjuster of the seat shell
• Height adjuster
• Force transfer means, cable
• 70 particles
• P Pivot point, pivot axis
• Δh Amount of the height adjustment

Claims

1 A vehicle seat having a seat part and a backrest, wherein a supporting structure of a side part or the backrest integrally has at least one spring element a pivot point and/or a safety belt connection.

2. The vehicle seat according to claim 1, wherein the seat part and/or the backrest is produced from plastics material.

3. The vehicle seat according to claim 1, wherein the supporting structure of at least the side part of the seat part is provided in an integral manner.

4. The vehicle seat (1) according to claim 1, wherein the seat part integrally has a seat shell and/or cross member.

5. The vehicle seat according to claim 4, wherein the seat shell comprises spring elements integrally.

6. The vehicle seat according to claim 1, wherein a height adjuster of the seat surface is integrated into the side part of the supporting structure of the seat part.

7. The vehicle seat according to claim 1, wherein the side part of the supporting structure of the seat part is provided integrally with an upper rail.

8. The vehicle seat according to claim 1, wherein an upper rail of a longitudinal adjuster is integrally provided with the supporting structure of the vehicle seat.

9. The vehicle seat according to claim 1, wherein wherein a seat shell is provided in a displaceable manner in relation to the side part of the supporting structure of the seat part.

10. The vehicle seat according to claim 9, wherein a rear region of the seat shell is adjustable in height in relation to the side part of the supporting structure of the seat part.

11. The vehicle seat according to claim 9 wherein the supporting structure of the seat part has a cross member on which the seat shell is supported in the event of a front-end impact.

12. The vehicle seat according to claim 1, wherein the seat part and/or the backrest has a cushion which is filled with particles.

13. A vehicle seat according to claim 2, wherein the seat part and/or the backrest is produced from fibre-reinforced plastics material.