FR2870800A1 - Front seat backrest equipment for motor vehicle, has adjusting unit to adjust vertical position of support in backrest having anchorage head that cooperates rigidly with panel by friction for allowing vertical adjustment of screen position - Google Patents

Abstract

The equipment has a rear panel (10) with a rod on which display screen (12) e.g. television screen, is mounted. A support has an adjusting unit (19) adjusting vertical position of the support in a backrest. The backrest has an anchorage head (23) inserted through an opening (14) and that cooperates rigidly with the panel by friction for allowing the vertical adjustment of the position of the support and that of the screen by a user. An independent claim is also included for a seat backrest of a motor vehicle including a seat backrest equipment.

Description

Vehicle seat backrest equipment and

  BACKGROUND OF THE INVENTION The present invention relates to equipment 5 for motor vehicle seat backs and to the backs provided with such equipment.

  More particularly, the invention relates to an equipment for a motor vehicle seat back comprising a front face and a rear face opposite to said front face, said equipment comprising a base intended to be mounted on said rear face of the backrest and an electronic device. comprising a display screen for facing a user disposed in front of said rear face of the folder.

  The document FR 2 817 812 describes an example of such equipment mounted on the rear face of a motor vehicle seat back. The screen can be moved by pivoting by the user disposed at the back of the folder, for example a passenger sitting on a row of seats arranged further back. Such a screen, housed relatively high in the file for reasons of space in the folder, is probably provided for an adult in the back seat, because it is located relatively high in the seat. A child wishing to use such a screen would find himself in a relatively uncomfortable position.

  We could correct this defect by planning to store the screen lower in the seat, if possible, but it is then adults who would be penalized by such an embodiment, because the screen would be too low for them. There is therefore a need for a screen that can be easily adapted to the various possible occupants of the rear seat.

  For this purpose, according to the invention, equipment of the kind in question is essentially characterized in that it comprises a height adjustment mechanism of said screen relative to said base.

  Thanks to these provisions, it is possible to adjust almost vertically the position of the screen relative to the folder. Each one can adjust the position of the screen according to his comfort.

  In preferred embodiments of the invention, one or more of the following arrangements may also be used: said screen is mounted on a support which is connected to the base by means of said adjustment mechanism; said adjustment mechanism comprises an opening, formed on the base, and an anchor foot formed on said support, said anchoring foot being adapted to slide with friction in said opening; - The equipment further comprises a screen orientation adjustment mechanism which is adapted to allow mainly a transverse rotation of said display screen with respect to said support; said display screen is mounted on an axis adapted to pivot in a receiving member fixed on said support; said base comprises at least one zone adapted to deform plastically by releasing a deformation energy during an impact of the vehicle; In another aspect, the invention relates to a motor vehicle seat back comprising such equipment.

  In preferred embodiments of the invention, one or more of the following arrangements may also be used: said support comprises a rigid member movably mounted in a longitudinal direction with respect to the base and said backing comprises an energy absorbing member adapted to release a deformation energy during the displacement of said rigid member in said longitudinal direction.

  said backrest comprises a rigid structure and said energy absorption member comprises a first portion connected to said rigid member of the support and a second portion linked to said rigid structure; - The vehicle seat back further comprises a movable tablet between a folded position in which it hides said screen and an extended position.

  Other features and advantages of the invention will become apparent from the following description of one of its embodiments, given by way of non-limiting example, with reference to the accompanying drawings.

  In the drawings: FIG. 1 is a schematic side view of a motor vehicle seat according to the invention, FIG. 2 is a perspective view of a detail of a part of the rear face of the vehicle. equipment intended to be attached to the back of the vehicle seat of FIG. 1, - FIG. 3 is a perspective view showing part of the equipment to be used in the context of the invention, and FIG. partially seen in side section of the seat back according to the invention.

  In the different figures, the same references designate identical or similar elements.

  Figure 1 shows a vehicle seat 1 such as a front seat of a motor vehicle, driver, passenger, or a second-row seat of a vehicle comprising three rows of seats, or other.

  This seat 1 conventionally comprises a backrest 2, possibly carrying a headrest 3 and linked, for example hinged, to a seat 4 itself mounted on a vehicle floor P, directly or through 2870800 4 slides , Or other.

  Conventionally, the file is constituted as described below in relation to FIG. 4 which is a partially sectional view of the top of the backrest 2. The backrest comprises in particular a rigid armature 5, for example in the form of a U-shaped metal frame having two lateral metal uprights 6 extending vertically in the backrest 2 and interconnected by a rigid metal crosspiece 7. This rigid frame 5 carries the other components of the backrest, and in particular a padding 8 flexible, by example made from polyurethane foam for receiving the occupant of the seat, and for example deposited on a flexible suspension web (not shown) attached to the rigid frame. In addition, padding 8 is often covered with a covering cap 9 made of leather, textile, or other material, offering an aesthetic appearance superior to that offered by the padding 8. Generally, the covering cap 9 covers the part before 2a of the folder while a rear equipment 16 is fixed at the rear face 2b of the folder, the covering cap 9, or the rigid frame 5, or otherwise, conventionally.

  FIGS. 2 to 4 show an exemplary embodiment of such a rear device 16 according to the invention, which comprises a rear panel 10, for example made of plastic or another to which a screen 12 is attached.

  For this purpose, the rear panel 10 has a recess 11 placed for example centrally in the transverse direction of the backrest, and for example in the upper part of the rear face 2b of the backrest 2.

  The recess 11 is for example of sufficient size to receive the screen 12 such as a television screen, microcomputer, game console, or other, in a manner which will be detailed later in connection with Figures 3 and 4. The panel 10 carrying the recess 11 is a reception base for the screen. The recess 11 has at its center an opening 14, for example in the form of a slot oriented substantially vertically in the panel 10, over a length of a few centimeters to a few tens of centimeters or so. In addition, the recess 11 has, in its lateral parts, frangible zones 15 for example made of a material able to release the energy received from the screen 12 during an impact of the motor vehicle in which the seat is installed 1 ci described.

  The recess 11 has dimensions adapted to receive a support 17 on which is mounted the screen 12, as shown in Figure 3. The recess 11 provided in the rear face 2b of the panel 10 may be deep enough that, in the storage position, the screen 12 does not protrude out of the recess 11 but has a smooth and uniform appearance with the rear panel 10. Alternatively, one could use a panel 10 having no recess. The support 17 comprises in particular a thin plate 18 adapted to face the bottom of the recess 11, and being wide enough to cover the frangible zones 15. The plate 18 bears on its rear face (hidden in Figure 3) an adjusting member 19 which will be described later in more detail with reference to Figure 4. The upper portion of the front face 18a of the plate 18 carries two receiving members 20, for example in the form of two half-moons each having a cylindrical recess in which is mounted a rod 21 adapted to rotate in the housing in half-moons, for example under the action of a user. The screen 12 is mounted on the rod 21, so that the user can change the orientation of the screen 12 by simple manual action on it. For this purpose, the rod 21 is held in position in the half-moons 20 by sufficient friction to maintain the screen 12 against the effect of gravity, but not sufficient to oppose the action of a user on the screen.

  Alternatively, it will be possible to place in at least one of the half-moons 20 a hinge able to be unlocked and then re-locked in a certain number of positions.

  If the half-moons 20 and the rod 21 are placed in the upper portion of the front face 18a of the plate 18, it is also possible to provide a cover 22 forming part of the support 17 and fixed on the plate 18 for the purpose of aesthetic and safety for the occupant in case of shock.

  Although the rotary connection of the screen on the support 17 has been presented in the upper portion of the front face 18a of the plate 18, it will be readily understood that this connection can also be made according to the invention in any other way and in any other appropriate place.

  FIG. 4 now represents the integration of the screen 12 in the seat of FIG. 2. The support 17, as previously described, comprises an adjustment member 19 of its vertical position in the backrest 2. This has a foot of anchoring 23 adapted to be inserted through the opening 14, for example by elastic deformation of the anchor foot 23 and adapted to come into rigid cooperation with the panel 10, for example by friction. This friction is sufficient to oppose the gravity, but not to oppose a vertical adjustment of the position of the support 17 and the screen 12 by the user. The anchoring foot 23 is also sufficiently long so that there is a displacement travel e between the rear face of the plate 18 and the bottom of the recess 11.

  In the example shown in Figure 4, the anchor foot also carries a rigid member in the form of a thin sheet metal ring 24 also cooperating by friction with the inner face of the panel 10. The ring 24 can also serve supporting a power absorbing member 25 disposed between said ring and the upper cross member 7 of the rigid structure 6 described above.

  In the event of a front impact of the vehicle, capable of causing a collision between a part of the user's body located opposite the rear face 2b of the backrest and the screen 12, the screen 12 and the support 17 can move longitudinally towards the front of the backrest relative to the base 11 over the entire travel stroke e. During this course e, the energy absorbing member 25 is deformed between the two rigid portions 24 (bound to the screen) and 7 (part of the rigid structure 6). This provision allows better protection of the occupant.

  In addition, the seat 2 may have a shelf 26 pivotally mounted on the rear face 2b of the backrest, for example by means of hinges, and adapted to hide and protect the screen 12 in a folded position, and constitute a support for example for writing, or other, in the deployed position.

Claims (10)

  Equipment (16) for a motor vehicle seat back comprising a front face (2a) and a rear face (2b) opposite to said front face, said equipment comprising a base (10, 11) intended to be mounted on said rear face of the backrest and an electronic device comprising a display screen (12) intended to face a user disposed in front of said rear face of the backrest, characterized in that said equipment comprises a height adjustment mechanism (14, 19) of said screen relative to said base (11).   2. Equipment according to claim 1, wherein said screen (12) is mounted on a support (17) which is connected to the base (10, 11) by means of said adjustment mechanism.   Equipment according to claim 2, wherein said adjusting mechanism comprises an opening (14), formed on the base (10, 11), and an anchoring foot (23) formed on said support (17), said foot anchor (23) being adapted to frictionally slide in said opening.   Equipment according to any one of claims 2 and 3, further comprising an orientation adjustment mechanism (20, 21) of the screen (12) which is adapted to allow mainly a transverse rotation of said display screen ( 12) relative to said support (17).   5. Equipment according to claim 4, wherein said display screen (12) is mounted on an axis (21) adapted to pivot in a receiving member (20) fixed on said support (17).   6. Equipment according to any one of the preceding claims wherein said base (11) comprises at least one zone (15) adapted to plastically deform by releasing a deformation energy, during an impact of the vehicle.   A motor vehicle seat backrest 5 comprising equipment (16) according to any one of the preceding claims.   A vehicle seat backrest according to claim 7, wherein said support (17) comprises a rigid member (24) movably mounted in a longitudinal direction relative to the base (10, 11) and wherein said backrest comprises an energy absorbing member (25) adapted to release deformation energy upon movement of said rigid member (24) in said longitudinal direction.   Vehicle seat backrest according to claim 8, wherein said backrest comprises a rigid structure (7) and wherein said energy absorbing member comprises a first portion connected to said rigid member (24) of the support (17). and a second portion bonded to said rigid structure (7).   10. Vehicle seat folder according to any one of claims 7 to 9, further comprising a shelf (26) movable between a folded position in which it masks said screen (12) and an extended position.