JPS60122513A - Air pressure cushion for being assembled to vehicle tire seat - Google Patents

Abstract

1. Pneumatic cushion, substantially made of rubber or rubber-like materials, for use in the lower portion of a back rest of a motor vehicle seat provided with two edge beads (2), the pneumatic cushion having two chambers (3, 4) which are disposed one above the other and extend horizontally at right angles to the seat, characterised in that an additional chamber (8) is disposed on each side of the horizontally extending chambers (3, 4) and extends vertically thereto, substantially over the height of these chambers (3, 4) in the longitudinal direction of the back rest, in that the compressed air connection (9-12) of each chamber (3, 4, 8) is disposed at the lower end of the pneumatic cushion, the upper transversely extending chamber (4) surrounding the lower, shorter chamber (3) laterally in a symmetrical manner via narrow extension portions (13, 14), and the compressed air connection (12) of the upper chamber (4) extends from one (14) of the two symmetrical extension portions (13, 14).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a pneumatic cushion for incorporation into a backrest for a vehicle seat having two or more chambers extending transversely to the seat in an overlapping manner. Preferably, it is arranged in the waist region of the user or in the lower part of the backrest.

Cushions of the above type with multiple inflatable chambers allow for single activation of the cushion;
As a result, the user has the advantage of being able to adjust the back cushion to his or her specific requirements. However, in cushions of the type mentioned above, i.e. cushions consisting of two or more superimposed, transversely oriented cushions, then - only one chamber is energized or three chambers are energized. This is a book in which only the so-called ``height adjustment'' is possible, and in any case the cushion acts over the length of the backrest.

The present invention offers even better adjustability of the pneumatic cushion, in which case the user can also achieve a precise shape restraint in the lumbar region, which can be important especially at medium and high speeds, for example when driving around curves in a vehicle. It should be achieved that the exact dorsal curvature can also be adjusted.

The invention provides that the cushion mentioned at the outset is designed in such a way that it not only has adjustable height, but also lateral adjustment, for example for adjusting the lumbar curvature. Use it as the basis of the assignment.

In order to solve this problem, according to the invention, at least one vertical chamber is arranged on each side of a horizontally oriented chamber, the chambers extending substantially over the height of the horizontally oriented chamber. . Thus, in the central region of the backrest there is a chamber which is arranged one above the other and which is laterally confined between the two vertically oriented chambers.

Such an arrangement of the chambers allows for greater influence of the lumbar area by corresponding biasing of the lateral vertically oriented chambers. It is also possible to adjust the horizontal chamber located in the center of the lumbar region in the usual way.

The cushion according to the invention is used in vehicle seats or backs thereof, which have thickened portions in the form of bulges extending vertically upwards to the upper edge of the back cushion on both sides of the back cushion.

This is done in the usual way with hoses etc.
In order to connect the cushion formed in this way to a compressed air source in a simple manner, according to another proposal of the invention, this hose is guided to the lower edge of the cushion, with the hose located above and in the direction of lateral pressure. A connection on the lower edge of the cushion is also provided for the chamber.

The details of the present invention will be explained based on the drawings showing examples.

The backrest has a central, almost flat abutment surface extending over the height of the backrest, and in the region of the opposite edges of the backrest a bulge 2 which likewise extends to the upper edge of the backrest. . The back can also be provided with a scalpel on the upper edge. There is a pneumatic cushion that extends to a height of μ of the backrest, is built into the backrest, and has a rectangular or square planar shape below the rug and cover in the lower part of the backrest surface 1, and the pneumatic cushion is not shown in detail. It is prevented from slipping off by the fixing means.

The cushion made of rubber or the like, which is illustrated in detail in this FIG. It is divided into two rooms 6.7.

On either side of the chambers 3.4 there are chambers 8 which extend vertically upwards on the side edges of the cushion. The length of this chamber corresponds to the height specified by re-chamber 3.4.

The chamber 3 has a hose connection 91 and has side chambers 8Fi hose connections 10 and 11. The hose connection for chamber 4 is designated 12.

All hose connections originate from the lower edge of the cushion, thereby simplifying the arrangement of this hose from the backrest to the compressed air source or control means. In this case, the connection part 9.10
and 12 are located directly adjacent to one side of the cushion.

The hose connections 11 for the facing chambers 8 must be arranged in the required manner on the respective edges of the cushion. The chamber 4 has a projection 13 that reaches up to the lower edge of the cushion so that a hose connection can also be integrated at the lower edge for its dust chamber 4. In order to be able to form the projection 13, the chamber 40 portion therefore surrounds the chamber 3 on both sides for reasons of symmetry.

[Brief explanation of the drawing]

FIG. 1 shows a perspective view of a backrest for a vehicle seat, and FIG. 2 shows a cushion for the lower region of the backrest (y#, part rest) provided for the backrest according to FIG. Number 3.4 in the figure: 8 horizontally extending chambers

Claims (6)

[Claims] (1) An air-neutral cushion for incorporation into a wheel seat backrest having two or more chambers that overlap and extend substantially transversely to the seat, the chambers preferably being in the lumbar region of the user or below the backrest. The cushion is preferably arranged in a horizontally oriented chamber (3, 4) in the central area of the backrest between the two edge bulges of the backrest. ) A pneumatic cushion characterized in that one chamber (8) is arranged on each side of the (b), the chambers extending over the height of the substantially horizontally oriented chambers. (2) A pneumatic cushion according to claim 1, characterized in that three horizontally oriented chambers (3, 6, 7) are arranged on both sides, with a vertical chamber (8) on each side. . (3) The pneumatic cushion according to claim 1, wherein the cushion extends across the height of the backrest. (4) When the air supply hose is guided along the lower edge of the cushion, a connection part is provided at the lower edge of the cushion to connect the large horizontal chambers (6, 7) located above. There is,
A pneumatic cushion according to claim 1. (5) The lower, transverse chamber (3) is shorter in length than the upper chamber (4), and the upper chamber connects the lower chamber laterally by means of a narrow opening (13). The compressed air connection (1
2), the pneumatic cushion according to claim 4. (6) A pneumatic cushion according to claim 1, in which the upper chamber of the two overlapping, laterally oriented chambers (3, 4) is divided by a lateral wall.