FR2887503A1 - Removable cushion for e.g. head restraint of rear bench seat, has arms movably mounted on cushion between retracted and deployed positions, and inserted into housings which are arranged such that cushion extends along occupant`s body - Google Patents

Abstract

The cushion (12) has a fixation device (18) removably fixing the cushion on a motor vehicle seat and including two fixation arms (40) each inserted into a corresponding housing of a frame, where the housings are arranged such that the cushion extends longitudinally along the body of an occupant. The lining has reinforcement inserts around/in the housings, and the arms are movably mounted on the cushion between a retracted position, in which the arms are retracted inside the cushion, and a deployed position, in which the arms extend outside the cushion. Independent claims are also included for the following: (1) a seat assembly comprising a seat and a cushion (2) a motor vehicle comprising a seat assembly having a seat and a cushion.

Description

The present invention relates to a removable cushion for a vehicle seat

  automobile, of the type comprising a device for releasably securing the cushion to a motor vehicle seat, comprising at least one

  fixing arm intended to be inserted into a corresponding receiving housing of the seat.

  There are motor vehicle seats provided with booster cushions removably attached to an upper part of the back of a seat. For this purpose, a headrest cushion is for example provided with two fixing rods intended to be engaged in fixing wells provided in the upper part of the file.

  Furthermore, motor vehicle seats are generally sized for adult passengers, and do not provide a satisfactory lateral support for children, sitting on the seat or on a child seat itself fixed on the seat.

  FR-Al-2,710,013 discloses removable lateral support cushions for a motor vehicle seat, provided with removable attachment hooks on an upper part of a backrest, or a bar for fixing the cushions, the bar being equipped with clips to be snapped onto pins for attaching a headrest cushion.

  However, these removable cushions head restraints or side support are bulky when not in use, especially when the cushions must be kept in the motor vehicle.

  An object of the invention is to provide a removable seat cushion for a motor vehicle that can be stored easily.

  For this purpose, the invention proposes a removable cushion of the aforementioned type, characterized in that the fixing arm is movably mounted on the cushion between a retracted position, in which the fixing arm is retracted inside the cushion, and an extended position, in which the attachment arm extends outside the cushion.

  According to other embodiments, the removable cushion comprises one or more of the following characteristics, taken separately or in any technically possible combination: the cushion comprises an elastic member for returning the attachment arm in the retracted position; - The armrest cushion is hinged relative to the cushion; - The cushion comprises an actuating button of the fixing arm, slidably mounted in a direction relative to the cushion, and mechanical return members adapted to convert the translational movement of the button into a rotational movement of the fixing arm; the button is slidably mounted in a direction orthogonal to the axis of articulation of the fixing arm, the button and the arm being connected by means of at least one peg fixed on a return member secured to one the button and the arm, and slidably mounted in an elongate slot provided on a return member secured to the other of the button and the arm, the light being elongated substantially orthogonal to the axis of articulation of the arm; the arm is articulated by one of its ends, and the return member integral with the arm, extends the arm on the opposite side to the axis of articulation thereof; the elastic return member is interposed between the button and a fixed support of the fixing device; the cushion comprises two fixing arms; and - the attachment arms are articulated about axes parallel to each other, and the attachment arms move from their retracted position to their deployed position in opposite directions of rotation.

  The invention also relates to a motor vehicle seat assembly comprising a seat and at least one removable cushion as defined above, the seat comprising at least one housing for receiving a fixing arm in the deployed position, this housing opening on a seating surface of the seat.

  Advantageously, the housing comprises a wall against clearance from the surface of the seat on which the housing opens, the wall against undercut being placed so that the fastening arm inserted into the housing is biased by the elastic return member in support against the wall against undercut.

  The invention also relates to a motor vehicle comprising a motor vehicle seat assembly as defined above.

  The invention and its advantages will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a schematic perspective view of a rear seat of a motor vehicle, according to the invention, on which are fixed several removable lateral support cushions; FIG. 2 is a schematic perspective view of a removable lateral support cushion, showing a device for detachably fixing the cushion disposed inside thereof; - Figure 3 is a sectional view along III-III of Figure 2, wherein fastening arms of the fastener are retracted into the cushion; - Figures 4 and 5 are views similar to that of Figure 3 and illustrate the fixing arms in different positions.

  As shown in Figure 1, the rear seat 2 is of the three-seat type P1, P2, P3, and comprises a seat 4, and a backrest 6 made in two parts 8, 10 foldable independently of one another , according to a known provision, called 2 / 3-1 / 3.

  In order to adapt the right places P1 and central P2 for children, removable lateral support cushions 12 are arranged at places P1 and P2.

  Each of the places P1 and P2 is equipped with a pair of cushions 12 fixed on the seat 4 and a pair of cushions 12 fixed on the part 8.

  Each cushion 12 forms, on the backrest or the seat of the square P1, P2 corresponding, a raised lateral region of support improving the lateral support legs or bust of an occupant sitting in place P1 or P2.

  The spacings between the cushions 12 are different between the square P1, adapted to receive a child of average size, and the square P2, adapted to receive a child of small size.

  The cushions 12 are substantially identical. Only a cushion 12 and its operation will be described in detail with reference to FIGS. 2 to 5.

  As shown in Figures 2 to 5, the cushion 12 comprises a flexible liner 14, an outer cover 16, and a device 18 for releasably securing the cushion 12 on a seat.

  The lining 14 is for example a synthetic foam. The cover 16 is for example made of fabric, and comprises an opening 17 (FIG. 3) for inserting the lining 14 and the fixing device 18 inside the cover 16.

  Referring to Figure 2, where only the fastener 18 and the contour of the liner 14 are shown to better show the fastener 18, the cushion 12 has a generally elongate shape along an axis L, and has a section transversely triangular transverse.

  The cushion 12 has three longitudinal faces 20, 22, 24, and two end faces 26, the faces 20, 22, 24 and 26 being interconnected by rounding.

  The longitudinal faces comprise a substantially flat bottom face 20 intended to be applied against a seat, a lateral bearing surface 22, substantially concave, and on which is intended to bear a passenger, and a substantially convex face 24.

  The fixing device 18 comprises a support 28 having, in view along the axis L, a substantially inverted T shape, the branch of which is formed by a substantially rectangular plate 30, elongated along the axis L, and whose foot is formed by a frame 32 integral with the plate 30.

  The plate 30 extends substantially in the plane of the face 20, and the armature 32 extends from the plate 30 towards the inside of the cushion 12.

  The lining 14 covers the support 28, and gives the cushion 12 its general shape.

  The lining 14 covers the frame 32, and comprises longitudinal beads 34 arranged on each side of the frame 32. A bead 34 defines the face 22, and the other bead 34 defines the face 24.

  The plate 30 is covered by the liner 14 on the side facing the inside of the cushion 12, and uncovered on the outwardly facing side of the cushion 12. The plate 30 defines the central zone of the face 20.

  The lining 14 comprises two longitudinal strips 36 extending transversely to the plate 30, and defining lateral zones of the face 20.

  The lining 14 is sufficiently thick and dense to prevent, in normal operation, that a passenger bearing on the face 22 or 24 feels the fastening device 18 under the lining 14.

  The plate 30 is provided with a central slot 38 elongate parallel to the axis L. The opening 17 is located opposite the slot 38 (Figure 3).

  The fixing device 18 comprises two fixing arms 40. Each arm 40 is articulated on the frame 32 about an axis A, between a retracted position (FIGS. 2 and 3), in which the arm 40 is received in a housing 41 of the frame 32 located inside the cushion 12 and facing the slot 38, and an extended position (Figure 4 and 5), wherein the arm 40 extends outside the cushion 12, to through the slot 38.

  Axes A and L are orthogonal, and do not intersect. The axes A are distant and parallel to each other.

  The arms 40 extend substantially in the same plane perpendicular to the axes A. Each arm 40 has an elongated shape tapering from an end 40a hinged to the armature 32 to a free end 40b.

  As can be seen more clearly in FIG. 3, the fixing device 18 comprises two buttons 42 for actuating the arms 40. Each button 42 can be accessed from outside the bag 12.

  Each button 42 is slidably mounted along the axis L in a sleeve 44 integral with the frame 32, each sleeve 44 opening on a respective end face 26 to enable the corresponding button 32 to be actuated.

  Each button 42 is movable between a rest position (FIG. 2 and 3), in which the button is flush with the corresponding face 26, and an active position (FIGS. 4 and 5) in which it is pressed inside the corresponding sleeve 44. .

  Each button 42 comprises a return rod 48, extending along the axis L, and articulated on the arm 40 corresponding, so that a movement of the button 42 along the axis L causes a rotation of the corresponding arm 40 around the axis A. More precisely, and as can be seen more clearly in FIG. 2, each rod 48 comprises an end portion 50 received between two parallel tabs 52 extending the arm 40 on the opposite side to the corresponding axis A. The end portion 50 is provided with guide pins 54 received in oblong slots 56 parallel to each other and formed in each of the tabs 52. The slots 56 are elongated radially with respect to the axis A. Each button 42 is biased in the rest position by a return spring 60. The spring 60 surrounds the rod 48, and bears at one end on the button 42, at its opposite end on the armature 32.

  In the retracted position, the arms 40 extend parallel to the axis L, one towards the other.

  As shown in FIG. 4, when the buttons 42 are actuated, as illustrated by the arrows F1, the rods 48 push the tabs 52 of each arm 40, so that each arm 40 pivots about its axis A of rotation. The pins 54 and the lights 56 allow the conversion of the rectilinear translation movement of the rods 48 into rotational movement of the arms 40.

  The arms 40 unfold by pivoting in opposite directions, and away from each other, as illustrated by the arrows F2.

  When the buttons 42 are depressed substantially to the maximum, the arms 40 are in the extended position, in which the arms 40 are spaced from one another, and extend substantially parallel to each other, and perpendicularly to the face 20.

  A portion 64 of the bench 2 comprises a lining 66 having a bearing surface 68 covered by a cover 70.

  The bearing surface 68 is the surface of the seat 4 or backrest 6 on which rests a seated occupant on the seat.

  The cover 70 comprises a slot 72. The lining 66 comprises two housings 74 for receiving the arms 40, open and opening on the surface 68 opposite the slot 72.

  Each housing 74 comprises a sidewall 76 that is inclined at an angle to the surface 68.

  Once the arms 40 in the deployed position, the user drives the arms 40 into the housings 74, so that the cushion 12 is in the position of Figure 4. The tapered shape of the arms 40 facilitates their insertion into the housing 40 .

  When the arms 40 are engaged in the housings 74, the cushion 12 is locked on the seat transversely to the axis L, that is to say perpendicularly to the plane of FIG. 5.

  The housings 74 are arranged so that the cushion 12 extends longitudinally along the body of the occupant, so that the cushion 12 constitutes a lateral support for an occupant sitting on the bench 2.

  As shown in Figure 5, when the user releases the buttons 42, they are pushed by the springs 60 to their rest position. As a result, the arms 40 are biased against the walls 76, as illustrated by the arrows F3. Due to the inclination of these walls 76, the arms 40 exert a bearing force of the cushion 12 against the portion 64, as illustrated by the arrow F4, which improves the fixing of the cushion on the seat 2.

  In a variant, the lining 66 is provided with reinforcing inserts around or in the housings 74, to limit deformation of the lining 66 under the effect of the arms 40, and thus to ensure the cooperation of the arms 40 and the housings 74.

  Alternatively, the housings 74 have no wall 76 against undercut.

  As illustrated in Figure 1, each portion 8 and 10 is provided with a plurality of housing pairs 74 distributed along a vertical slot 72 formed in their covers 70, and to have a cushion 12 at different heights.

  The invention also applies to the headrest cushions, and generally to the removable cushions for attachment to a seat to provide additional support.

  The invention applies to benches and also to individual seats.

Claims (12)

  1. A cushion (12) removable for a motor vehicle seat, of the type comprising a device (18) for removably attaching the cushion (12) to a motor vehicle seat, comprising at least one attachment arm (40) intended to be inserted in a housing (74) corresponding to a motor vehicle seat, characterized in that the fixing arm (40) is movably mounted on the cushion (12) between a retracted position, wherein the fixing arm (40) is retracted inside the cushion (12), and an extended position, in which the attachment arm (40) extends outside the cushion.   2. Cushion (12) according to claim 1, characterized in that it comprises a resilient member (60) for biasing the fixing arm (40) in the retracted position.   3. Cushion (12) according to one of claims 1 and 2, characterized in that the fixing arm (40) is articulated relative to the cushion (12).   4. Cushion (12) according to claim 3, characterized in that it comprises a button (42) for actuating the fixing arm (40), slidably mounted in a direction (L) relative to the cushion (12). and mechanical return members (48, 50, 52, 54) adapted to convert the translation movement of the button (42) into a rotational movement of the attachment arm (40).   5. Cushion (12) according to claim 4, characterized in that the button (42) is slidably mounted in a direction (L) orthogonal to the axis (A) of articulation of the fixing arm (40), the button (42) and the arm (40) being connected via at least one pin (54) fixed on a return member (48) integral with one of the button (42) and the arm (40) , and slidably mounted in an elongated slot (56) formed on a return member (52) integral with the other of the button (42) and the arm (40), the slot (56) being elongated substantially orthogonal to the axis (A) articulating the arm (40).   6. Cushion (12) according to claim 5, characterized in that the arm (40) is articulated by one of its ends (40a), and in that the return member (52) integral with the arm (40). , extends the arm (40) on the opposite side to the hinge axis (A) thereof.   7. Cushion (12) according to any one of claims 4 to 6, dependent on claim 2, characterized in that the elastic return member is interposed between the button (32) and a support (28) fixed from fastening device (18).   8. Cushion (12) according to any one of the preceding claims, characterized in that it comprises two fixing arms (40).   9. Cushion (12) according to claim 8 dependent on claim 3, characterized in that the fixing arms (40) are articulated about axes (A) parallel to each other, and in that the fixing arms ( 40) move from their retracted position to their deployed position in opposite rotational directions.   10. A motor vehicle seat assembly, comprising a seat (2) and at least one cushion (12) according to any one of the preceding claims, the seat (2) comprising at least one housing (74) for receiving the arm (40) in the deployed position, the housing (74) opening on a bearing surface (68) of the seat (2).   11. An assembly according to claim 10 dependent on claim 2, characterized in that the housing (74) comprises a wall (72) against clearance relative to the surface of the seat on which the housing (74) opens, the wall (72) against undercut being placed so that the attachment arm (40) inserted into the housing (74) is biased by the elastic return member (60) bearing against the wall (72) against undercut.   12. A motor vehicle comprising a seat assembly according to one of claims 10 and 11.