FR2629399A1 - ANATOMICAL SEAT, ESPECIALLY FOR A MOTOR VEHICLE - Google Patents

Abstract

Anatomical seat, in particular for a motor vehicle, comprising a back part 2 mounted by its base at the rear of a seat part 1, the back part 2 comprising two elements 21, 22 pivoting one on the other , seat characterized in that the rear zone of the seat part and the lower zone of the backrest part each have a recess 16, 17 together forming a bowl.

Description

The invention relates to an anatomical seat,

  especially for a motor vehicle.

  The seat according to the invention comprises a back part mounted by its base at the rear of a seat part, the back part comprising two elements pivoting one on the other, seat characterized in that the area rear of the seat part and the lower area of the back part, have

  each a step together forming a bowl.

  According to another characteristic of the

  vention, the two pivoting elements of the backrest-

  ment, for the upper element, a dorso-dorsal support element and for the lower element a dorso-lumbar support element, the dorsodorsal element being

  surmounted by a headrest itself made in two elements

  elements constituting, for the upper element a support

  skull and for the lower element a neck support,

  the neck support being movable by sliding perpendicularly

in terms of the file plan.

  According to another characteristic of the

  vention, the neck support and / or the skull support are pivotally mounted on a horizontal axis parallel to the plane of the backrest, these axes being offset towards the rear edge

  neck support and / or skull support.

  The invention is shown by way of example

  non-limiting magpie on the attached drawings in the-

which:

  - Figure 1 is a schematic side view

  that of a seat according to the invention, - Figures 2 and 3 are side views

  of two other embodiments.

  The present invention therefore aims to achieve a seat which is adapted to the profile of the natural conformation of the dorsal axis of its user, whatever its dimensions and

  the desired inclination of the seat back. Notam-

  ment, this adaptation is obtained regardless of the dimensions of the passenger compartment of the motor vehicle which comprises this seat, so that the user is kept correctly in position, that is to say so that he does not have tendency to slide on the seat part of the seat, which generally results in repeated efforts on the part of the user to

maintain in correct position.

  The seat shown in FIG. I thus comprises a seat part 1, a back part 2 dividing into an upper element 21 or dorso-dorsal element, and a lower element 22 or dorso-lumbar element. These two elements 2, and 22 are articulated

  one on the other via a horizontal axis-

  tal 3 parallel to the mean plane X-X of the backrest, the pivoting angle being however limited as will be

explained below.

  The dorso-dorsal element 21 of the backrest 2 is surmounted by a headrest 4 which is itself produced in two parts, a lower part 41 which constitutes

  a neck support and an upper part 42 which constitutes

kills a skull support.

  The two parts 4, and 42 of the headrest are of adjustable spacing, in the X-X plane, one

  relative to each other and relative to the golden element

  so-dorsal 21 by means of racks 5 and 6. Furthermore, the neck support 41 is movable in

  direction of arrow F1, i.e. perpendicular to

  rement to the X-X plane by means of slides 7

or the like.

  This arrangement allows the user to adapt the projection formed by the neck support 41 to its morphology, in order to achieve a very restful support between the adjoining parts comprising the skull support

  42, part 21 of the backrest and this neck support 41.

  Furthermore, this neck support 41 is pivotally mounted along a horizontal axis 8 parallel to the plane XX, this horizontal axis 8 being further offset towards the rear edge 9 of the neck support so that this pivoting allows the height to be adjusted. from the front edge and take into account the inclination of this edge

  front depending on the height of the neck support.

  Likewise, the skull support 42 is pivotally mounted

  along a horizontal axis 11 parallel to the mean plane X-X of the backrest, this axis 11 being offset towards the

  rear edge 12 of the skull support to allow re-

  height adjustment of the front edge 13 and determine the

  clinching of this front edge in combination with the re-

  adjusting the height of this skull support 42 relative to

neck support 41.

  The backrest 2 is, at its base 13, mounted arti-

  butted at the rear end 14 of the seat part 1 via a horizontal axis 15. In addition,

  this lower edge of the backrest, as well as the rear edge

  re of the seat part, each have a decrease

  respectively 16 and 17 which together form

  a bowl interesting both the seat part-

and the file part.

  This arrangement improves cons-

  ideally the support of the user, so that at least part of the sacrum is placed along the recess 16 while the tuberosity. ischial

  is placed in the cavity 17. The buttock of the u

  user is then correctly maintained by being retained by the oblique edge before 17, of the recess 17.

  By this arrangement, the femurs of the usa-

  ger come to rest on the light upper part

  slightly inclined 18 of the seat part i reducing it

  sant support on the glutes, while the vertebrae

  the lower back are properly resting on the

  dorso-lumbar tie 22 and this up to the lumbosacral hinge which is placed in 161 at the height of the

  upper edge of the recess 16.

  The combination of the described arrangements

  leads to an anatomical seat of great comfort

  strong minimizing the fatigue inherent in the

  prolonged driving of a motor vehicle.

  Furthermore, the combination of the characteristics

  ticks in this seat provides optimum support for the user, preventing vibrations or tremors produced or transmitted by the vehicle from being passed on

down to the spine.

  In accordance with the invention, it was also

  discovered that the position of the hinge pin

  3 connecting the dorso-dorsal part 21 to the sleeping part

  so-lumbar 22 had to occupy particular positions

  lières well defined as a function of the angle Y formed by the backrest 2 and the seat 1. In fact, this angle is determined according to the shapes and dimensions of the passenger compartment of the vehicle and the greater this angle, the greater the distance of the hinge pin 3 relative to

  to the hinge pin 15 must be reduced.

  Thus, for a seat whose angle Y is - (Figure 1), the height of the dorso-dorsal part 2, represents 27%, to within 10%, of the total height of the backrest 2, while for a seat whose angle Y is equal to 140 (figure 2), the height of the part

  dorso-dorsal 21 is 34%, to within 10%, of the height

total file 2.

  Finally, for a seat whose angle Y is equal

  at 160 (see Figure 3), the height of the back part

  dorsal 21 represents, to within 10%, 60% of the height

folder.

  This provision corresponds to support for

  height of the kidneys for a large angle Y and at the

  milk to promote support at the level of the shoulder blades

for a smaller angle Y.

Claims (5)

  1) Anatomical seat, especially for a vehicle   automobile, comprising a backrest part (2)   ted by its base at the rear of a seat part (1), the back part (2) comprising two elements (21, 22) pivoting one on the other, seat characterized in that the area rear of the seat part and the lower area of the back part, each have   a recess (16, 17) together forming a bowl.   2) Seat according to claim 1, ca-   characterized in that the two pivoting elements of the backrest (2) form, for the upper element (21), a   dorso-dorsal support element and for the inferior element   laughing (22) a dorso-lumbar support element, the   dorso-dorsal ment being surmounted by a headrest (4) itself made of two constituent elements, for   the upper element (42) a skull support and for the ele   lower neck (41) a neck support, the neck support being movable by sliding (7) perpendicularly in the plan (x-X) of the file.   3) Seat according to claim 2, ca-   characterized in that the neck support (41) and / or the support   skull (42) are pivotally mounted on a horizontal axis (8, 11) parallel to the plane (X-x) of the backrest, these axes   being offset towards the rear edge (9, 12) of the support neck and / or skull support.   4) Seat conforms to any of the   previous vendications, characterized in that the height of the dorso-dorsal part is equal to 27%, to within 10%, of the height of the back part and   the angle of the seat part and the back part sier is 125.   ) Seat conforms to any of the   vendications from 1 to 3, characterized in that the height   dorso-dorsal part (21) is equal to 34%, to within 10%, of the height of the back part and   the angle of the seat part and the back part sier is 140 '.   6) Seat conforms to any of   claims i to 3, characterized in that the   height of the dorso-dorsal part is equal to 60%, to within%, of the height of the back part and   the angle of the back part and the seat part seat is 160 '.