FR2468336A1 - MOUNTING AN ADJUSTABLE INCLINATION ELEMENT ON A SUPPORT, IN PARTICULAR A SEAT BACKREST ON A TRAPPING - Google Patents

Abstract

This assembly, allowing the passage from a first stable position to a second stable position, comprises two symmetrical connecting pieces 10, between the support 1 and the adjustable tilting element 3. Each piece 10 is articulated, around a first axis, to support 1 and, around a second axis, to element 3 such as a backrest, the two axes being concurrent and forming a certain angle alpha. By pivoting the two connecting pieces 10 by about 180 degrees, the adjustable tilt element is passed from the first to the second position, angularly separated by 2 alpha. This assembly is applicable to the back of a child seat, for the transition from the sitting position to the lying position.

Description

The present invention relates to the mounting of a

  adjustable inclination on a support, in particular

  a seat back on a base.

  In the field of seats, and more particularly child seats, it is interesting to be able to adjust the inclination of the backrest, so as to obtain

  least a sitting position and a supine or semi-

  lying down, and possibly also intermediate positions

diaries.

  The present invention aims to provide a

  an adjustable tilting element, applicable

  including seat files, allowing for the

  first position to a second position by an extremely simple mechanism in its realization and

in its use.

  For this purpose, the invention relates to an assembly

  of an element with adjustable inclination on a support, in particular

  of a seat back on a base, which comprises two symmetrical connecting members between the support and the adjustable tilt element, each of these two connecting members being hinged, around a first

  axis, with the support and articulated, around a second axis con-

  running with the first one and doing with this one a

  certain acute angle CX, to the adjustable inclination element

  this element and / or the support being deformable

  such that, by pivoting the two liaison organs

  about 1800 about their hinge axes to the support, the adjustable tilt element can move from a first position to a second position,

angularly separated from 20C.

  Thus, an assembly requiring a minimum number of parts and axes, and offering stable end positions, the only condition to be respected is that at least one of the two parts called "support" and "adjustable tilt element" This condition is easily achieved in the case where the adjustable tilting element is constituted by a

  backrest having a tubular armature in the form of

  ceauL. According to one embodiment of the invention, the two connecting members between the support and the adjustable tilting element each consist of a solid piece having two bores of intersecting axes, opening respectively on two opposite faces of said part, one of these bores receiving a cylindrical or tubular end-shaped part of the support,

  while the other bore receives a part in the form of

  cylindrical or tubular triteness of the inclined element

  its adjustable. It should be noted that, in the application to the seats, this arrangement is usable without any additional means of axial retention of the cylindrical parts introduced into the connecting pieces, which leads to an extremely simple embodiment. To facilitate the error-free assembly of these connecting pieces, it is advantageously provided that the two bores of each of them, as well as the corresponding parts of the support and

  adjustable tilting element, have different diameters

  ent. The choice of monobloc connection parts facilitates

  also the maneuver for moving from one position to another

  and for this purpose, the parts considered preferably have a lateral part with a protrusion

intended for their prehension.

  According to a complementary feature, means are provided for angularly locking the two connecting members with respect to the corresponding parts of the support and / or the adjustable tilting element,

  to be able to immobilize this element in posi-

intermediary

  In any case, the invention will be better understood

  using the following description, with reference to the

  attached schematic sin representing, by way of non-limiting example, an embodiment of this mounting of an adjustable tilt element on a support, in the case of its application to an adjustable seat back tilt: Figure 1 is a perspective street of a portable child seat, whose backrest is mounted according to the invention; Figure 2 is a sectional view of one of the two connecting parts 1ntre the -pement and the back of this seat;

  Figure> is a side view of the same seat, in

  sitting position; Figure 4 is a view V to Figure 3, but in a supine position

  Figure 5 is a front view, partial, of the armament

  ture of the child's seat, illustrating

  the transition from one position to another.

  Co.mee 1 moantrent Figures 1, 3 and 4, the inw-en

  tion is considered in its particular application to a child seat9 whose main parts are a base 1, a seat 2 and a folder 3 to

adjustable tilt.

  2X0 e ', 0em: - ocomprend a rear crossbar 4, u'mat pins 5 Horizontal bent 5, bent curved to create two ends 6 turned to 5U! the vertical

  like nmaylike, which are also geared towards

  'era'o Lgassise 2 comprises a frame 7 in the form of a rim, these arextremtee riee are articulated to the parties

  6 of the driver's seat 19 of a transverse-oriented

  mento do: Includes a tubular remature 8 in:?, r3 M:?: D of which the inner Q-eteris 9 see; e! ic-: m; e nztsem, subrie uree 2 of the pi ee

  1 of the two 10-link

   35s i example oaDlicatbnrereenelements e. cortieuat fabric l] assse 2 and dosaer, fixed to: Z armature respee- 7 and 7. are connected to each other

Z458336

  and supplemented by straps 11 for the maintenance of the

  ghost. In addition, the backrest 3 is connected to the base 1

  by means of two lateral belts 12,

putting on the seat.

  The connecting pieces 10, more particularly the object of the present invention, have a clearly visible structure in FIG. 2. They are massive, but

  each of them has two bores 13 and 14 which de-

  respectively close on two opposite faces 15 and 16 of the room in question. The axes 17 and 18 of these two bores 13 and 14 are located in the same plane and are concurrent at a point 19; c <designates the acute angle formed by these two axes 17 and 18, this angle being

of the order of 15. -

  In the exemplary embodiment shown, the bore 13 of smaller diameter receives an upper end 6 of the base 1, and the bore 14 of larger diameter

  receives the corresponding lower end 9 of the

  The different diameters of the two bores 13 and 14, as well as the corresponding parts 6 and 9 of the base 1 and the backrest 3, avoid any

  mounting error on the part of the user.

  As also shown in FIG. 2, each connecting piece 10 still has, on the side of the bore 14, a lateral part having a projection 20 and a

  concave curved region 21, in order to facilitate preheating

this part 10.

  The adjustment of parts 6 and 9 in both

  10 connecting parts is such that it allows the pivot-

  these parts in relation to the said parts,

  axes 17 and 18; in addition, the various elements

  5, 7 and 8 may become deformed in a certain

  measure, so that the seat can be used as follows:

  In a first so-called "sitting" position,

  In FIG. 3, the two connecting pieces 10 are located in parallel vertical planes, and have an orientation such that the lower ends 9 of the hoop 8 are less inclined relative to the vertical than the upper ends 6 of the base.

  1. The file 3 is thus placed in a relevant position

Vee.

  In a second so-called "lying" position,

  4, the two connecting pieces 10 are still located in parallel vertical planes, but have an orientation opposite to the preceding one, the projections 20 being turned downwards and no longer

  to the top. As a result, the lower extremities

  res 9 of the arch 8 are more inclined relative to

  the vertical than the upper ends 6 of the

  1. The file 3 is thus placed in a position

lowered.

  This lowered position of file 3 is also indi-

  in phantom in Figure 3, which shows that the two positions are angularly separated from 2.5R, Econservant here, of course, the meaning

  year previously and illustrated in Figure 2.

  It also follows from the above that, for the passage from one position to another, it is necessary to rotate the two connecting pieces 10 of about 1800

  around their axes of articulation at the very ends

  6 of the base 1. These two parts can be maneuvered in opposite directions, as illustrated

  in Figure 5, for the transition from one position to the other

  be. If the shape of the fabric parts of the seat

  puts, one can also maneuver the two parts 10 in the same direction, keeping them parallel. FIG. 5 shows the deformations undergone by the reinforcements during

moving from one position to another.

  It will be understood that in the intermediate positions, such as that of FIG. 5, the backrest 3 occupies an intermediate inclination between those of the sitting and lying positions. Means may be provided, in addition, to angularly block the two connecting pieces 10 relative to the corresponding ends 6 and / or 9, belonging to the base 1 and / or the backrest 3, so as to immobilize this folder 3 in

intermediate positions.

  The present invention, described above in its case of application to a child seat, can also be applied to the seats in general, as well as to other technical fields in which the problem arises.

  mounting of an adjustable tilt element, for example

ple for awnings.

  It goes without saying, and as it follows already from the foregoing, the invention is not limited to the only

  embodiment of this mounting of an inclined element

  adjustable on a support which has been described above

  as an example; it embraces, on the contrary,

  all variants made according to the same principle.

  Thus, in an embodiment equivalent to that described, the two connecting members between the support

  and the tilt-adjustable member may be

  each killed, in place of the massive parts described above, by two sleeves intersecting axes, joined to each other for example by welding, and receiving corresponding parts of the support and the element

tilt adjustable.

Claims (5)

- CLAIMS -   1.- Mounting an adjustable tilt element on a support; including a seat back on a base, characterized in that it comprises two symmetrical connecting members (10) between the support (1) and the adjustable inclination element (3), each of these two connecting members (10) being articulated around a first axis (17) to the support (1) and articulated about a second axis (18) concurrent with the first and making with it a   certain acute angle c, to the tilting element   ble (3), this element (3) and / or the support (1) being de-   shaped so that by pivoting the two connecting members (10) about 180 around their   axos (17) of articulation to the support (1), the element of   adjustable bending (3) can pass from a first posi-   in a second position, angularly separated by 2 ". - Assembly according to claim 1, characterized in that the two connecting members between the support and the adjustable tilting element each consist of a solid piece (10) having two bores (13,   14) axes (17,18) concurrent, and opening respective-   two of said bores (13) receiving a cylindrical or tubular end portion (6) of the support (1), while the another bore (14) receives a cylindrical or tubular end portion (9) of   the adjustable tilt element (3).   3Installation according to claim 2, characterized in that the two bores (13,14) of each of the connecting pieces o) 1 as well as the corresponding parts (6,9) of the support (1) and the tilting element   adjustable (3), have different diameters.   4. An assembly according to claim 2 or 3, characterized   oe that the connecting pieces (10) have a par-   side tie having a projection (20) for gripping. ? 4 8336   5. An assembly according to claim 1, characterized in that the two connecting members (10) between the support (1) and the adjustable inclination element (3) are each constituted by two sleeves intersecting axes, joined together. to one another and receiving corresponding parts of the   support and adjustable tilt élament.   6.- Assembly according to any one of the claims   1 to 5, characterized in that means are provided for angularly locking the two connecting members (10) with respect to the corresponding parts (6, 9) of the support (1) and / or of the adjustable tilting element ( 5), so as to be able to immobilize this element (3) in intermediate positions.   7.- Child seat, characterized in that it comprises   application of the assembly according to any of the   1 to 6, for the linking of his file to   adjustable clinch (5) at its base (1).