FR3074107A1 - AUTOMOBILE ROTARY SEAT COMPRISING AN ANTI-ARRESTOR AND MOTOR VEHICLE COMPRISING SUCH A SEAT - Google Patents

Abstract

The invention relates to a rotary car seat (10) comprising: - a support plate (12) configured to be integral with a slide structure (16) of a motor car, - a turntable (14) mounted on the plate support (12) rotatably to allow rotation of the seat structure relative to the support plate (12) about an axis of rotation (B), - an anti-tearing member comprising: ○ a mounting bracket ( 24) secured to the support plate (12) and extending through a passage opening (26) formed in the turntable (14) so that a retaining aperture formed in the bracket (24) extends at least partially beyond said passage opening (26), ○ a retaining body (30) mounted on the turntable (14) and extending through the retaining aperture to retain the displacement the turntable (14) along the axis of rotation (B).

Description

The present invention relates to a rotary automobile seat comprising an anti-tearing member. The invention also relates to a motor vehicle comprising such a seat.

It is known to allow a car seat to be rotatable relative to the body structure of a motor vehicle, in particular an autonomous vehicle, to facilitate access for passengers inside this vehicle and for interior modularity of the vehicle. This can allow a passenger to be rearward facing. In addition, this type of car seat is particularly useful when the motor vehicle is designed for a person with reduced mobility. For this, it is known to produce a seat comprising a rotary plate on which is mounted a passenger seat structure, this plate being movable in rotation vis-à-vis a support plate integral with the body structure.

To secure the support plate with the mobile plate, it is known from document WO 2012/028235 to use nails fixed on the support plate and extending through openings formed in the mobile plate. The nails have an extended dimension portion extending beyond the movable plate to allow the two plates to be held together. These openings are moreover designed so as to allow the movement of the nails inside the openings during the movement of the movable plate relative to the support plate.

However, it has been found that such mounting of the support plate with the movable plate does not make it possible to guarantee satisfactory joining of these two plates. In particular, when the seat has three attachment points for a three-point seat belt, it has been found that an assembly as described in WO 2012/0282235 does not prevent the seat from being torn off satisfactorily. In particular, this type of mounting makes it impossible to comply with the new safety standards, in particular the ECE 14 standard. During the tests carried out for the ECE 14 standard, a tractive effort simulating the effects of an accident is applied to the belt. security system fitted to the seat. This tensile force is of the order of 20 times the mass of the seat. To meet the requirements of this ECE 14 standard, the seat must resist tearing under this tensile force.

There is therefore a need for a rotary automobile seat making it possible to facilitate the access of a passenger inside the vehicle while having improved resistance to tearing.

For this, the invention relates to a rotary automobile seat comprising:

- a support plate configured to be integral with a slide structure of a motor car,

a rotary table configured to receive a seat structure, the rotary table being mounted on the support table in a rotatable manner to allow the rotation of the seat structure relative to the support table about an axis of rotation,

- an anti-tearing organ comprising:

o a fixing bracket integral with the support plate and extending through a passage opening formed in the rotary plate so that a retaining opening formed in the fixing bracket extends at least partially beyond said passage opening, o a retaining body mounted on the turntable and extending through the retaining opening to retain the movement of the turntable along the axis of rotation.

Such an anti-tearing member makes it possible to secure the support plate to the rotary plate in an improved manner while allowing the rotary plate to move in a rotary manner relative to the support plate. Indeed, the fixing bracket and the retaining body together form a more robust stop whose resistance to tearing is improved with respect to an assembly where the rotary plate is secured to the support plate only by nails fixed on the support plate.

According to one embodiment of the seat, the support plate comprises a first face oriented towards the rotary plate and a second face opposite to the first face, the support plate also comprises a holding opening in which the fixing bracket is housed, the 'fixing bracket comprising a holding portion extending transversely to the axis of rotation and pressing against the second face to retain the movement of the fixing bracket along the axis of rotation.

According to one embodiment of the seat, the holding opening extends radially relative to the axis of rotation.

According to one embodiment of the seat, the retaining body comprises a curved portion forming an angular sector extending around the axis of rotation.

According to one embodiment of the seat, the passage opening forms an angular sector extending around the axis of rotation.

According to one embodiment of the seat, the anti-tearing member comprising another fixing bracket and another retaining body cooperating together to retain the movement of the rotary table along the axis of rotation, the fixing brackets being arranged on edges of the support plate opposite to each other.

According to one embodiment of the seat, the anti-tearing member further comprises at least one nail integral with the support plate and extending through a nail opening formed in the rotary plate, said nail having an end forming a stop retaining the movement of the turntable along the axis of rotation.

According to one embodiment of the seat, the rotary table comprises:

a rear portion at the level of which the passage opening or openings are formed, and

- A front portion, opposite to the rear portion, comprising at least one anti-tilting member configured to cooperate with the support plate to prevent rotation of the rotary plate along a tilting axis transverse to the axis of rotation.

According to one embodiment of the seat, the latter further comprises a seat structure of a passenger, a backrest and three points of attachment of a three-point seat belt.

The invention also relates to a motor vehicle comprising:

- a rotary automobile seat according to any one of the preceding claims,

- a body structure, and

- At least two slides mounted on the body structure to cooperate each with a mobile carriage, the support plate of the rotary automobile seat being secured to each of the mobile carriages to allow the translation of the rotary automobile seat along the slides.

Other characteristics and advantages of the invention will appear on reading the following description of preferred embodiments of the invention, given by way of example and with reference to the accompanying drawings.

Figure 1 shows a perspective view of a structure comprising two slides on which is mounted a support plate and a plate rotatably mounted on the support plate.

FIG. 2 represents an exploded perspective view of the structure of FIG. 1.

FIG. 3 represents a perspective view of a car seat comprising the structure of FIG. 1.

As shown in Figures 1 and 2, a rotary automotive seat 10 includes a support plate 12 configured to be integral with a slide structure 16 of a motor car. The slide structure 16 comprises two slides 18 extending along a slide axis A and two movable carriages 20 cooperating with the slides 18 to translate along the slide axis A.

The rotary automobile seat 10 also comprises a rotary plate 14 configured to receive a seat structure (not shown) on which a passenger can sit. The rotary automobile seat 10 thus preferably comprises a seat structure of a passenger mounted on the rotary plate 14 and a backrest secured to the seat structure. The rotary plate 14 is mounted on the support plate 12 in a rotatable manner to allow the rotation of the seat structure relative to the support plate about an axis of rotation B. Preferably, the axis of rotation B corresponds to a vertical axis. Thus, the rotation of the seat structure around the axis of rotation B makes it easier for the passenger to access the interior or from the exterior of a motor vehicle in which the present rotary automobile seat is installed.

10. The motor vehicle is preferably an autonomous vehicle in which the rotary motor seat 10 makes it possible to facilitate interior modularity or access for passengers.

The support 12 and rotary 14 plates each form a flat platform extending transversely to the axis of rotation B. An opening is formed in the center of each of these platforms. The support 12 and rotary 14 plates both comprise a rotation guide ramp 15 formed around the central opening to allow rotation of the rotary plate 14 relative to the support plate 12.

Preferably, the rotary automobile seat 10 forms a seat with an integrated seat belt. In this case, the rotary automobile seat 10 also comprises three points for fixing a three-point seat belt.

The rotary automobile seat 10 also comprises a non-pulling member comprising two fixing stirrups 24. Each fixing stirrup 24 extends through a passage opening 26 formed in the rotary plate 14 so that a retaining opening 28 formed in the fixing bracket 24 extends at least partially beyond said passage opening 26. In other words, each fixing bracket 24 extends through the passage opening 26 so that the the retaining opening 28 is accessible beyond the rotary plate 14. The fixing brackets 24 are preferably arranged on edges of the support plate 12 opposite to each other, on either side of the axis of rotation B. To allow the relative movement of the fixing brackets 24 relative to the rotary plate 14, the retaining openings 28 preferably form an angular sector extending around the axis of rotation B. Alternatively, where retaining slots 28 can be of any shape allowing the fixing brackets 24 not to interfere with the rotary plate 14.

The anti-tearing member also comprises two retaining bodies 30 mounted on the turntable 14 and each extending through the retaining opening 28 of one of the fixing brackets 24 to retain the movement of the turntable. along the axis of rotation B. Preferably, the retaining bodies 30 are curved. More preferably, the retaining bodies 30 comprise at least one curved portion forming an angular sector extending around the axis of rotation B. Thus, during the rotation of the rotary plate 14 around the axis of rotation B , the fixing brackets 24 slide along the retaining bodies 30. The retaining bodies 30 are preferably assembled to the rotary plate 14 in a removable manner to facilitate the mounting of the rotary automobile seat 10, for example by screwing. Alternatively, the retaining bodies 30 can be integral with the turntable 14. In the latter case, the fixing brackets 24 can be oversized and have an opening for inserting the retaining bodies 30 inside the fixing brackets 24. Alternatively or in combination, the retaining bodies 30 may comprise at each of their ends a curved portion so that the retaining bodies 30 have an S shape.

The mounting between the fixing brackets 24 and the retaining bodies 30 enables the support 12 and rotary 14 plates to be secured in a robust manner while allowing relative rotation of one relative to the other. Indeed, this arrangement allows great design flexibility, in particular with regard to the sections used for the fixing brackets 24 and the retaining bodies 30, to allow the two support 12 and rotary plates to be effectively retained.

14. It is thus possible to size the car seat 10 so as to withstand the forces encountered by the rotary car seat 10 during an accident. Preferably, the dimensioning is carried out to meet the loading requirements encountered in the ECE standard 14 in which a tensile force of 20 times the mass of the car seat 10 is applied to the seat belt system integrated into the car seat 10. In the embodiment shown in FIGS. 1 and 2, the rotary automobile seat 10 comprises two fixing brackets 24 and two retaining bodies 30. Alternatively, the rotary automobile seat 10 can comprise at least one fixing bracket 24 and at minus a retaining body 30.

In the embodiment visible in FIG. 2, the fixing brackets 24 form parts separate from the support plate 12. The fixing brackets 14 are here housed inside a holding opening 34 formed in the support plate 12 This holding opening 34 is formed through the support plate 12 to receive the fixing brackets 24. The holding opening 34 preferably extends radially with respect to the axis of rotation B. The fixing brackets 24 have a holding portion 32, or flange, extending transversely to the axis of rotation B making it possible to form a longitudinal stop retaining the fixing brackets 24 along the axis of rotation B. In other words, the portion holding 32 thus bears against a face of the support plate 12 opposite to a face oriented towards the rotary plate 14 to retain the movement of the fixing bracket along the axis of rotation B.

Thus, in combination with the retaining bodies 30, the fixing brackets 24 make it possible, once put in place between the support 12 and rotary 14 plates, to produce a bidirectional stop along the axis of rotation B. Alternatively or in combination, the fixing brackets 24 can be fixed directly to the support plate 12, for example by screwing. The fixing brackets 24 are preferably assembled to the support plate 12 in a removable manner to facilitate the mounting and the manufacture of the support plate.

12.

In addition, the anti-tearing member comprises two nails 36 integral with the support plate 12 and extending through two nail openings 38 formed in the rotary plate 14. Said nails 36 have one end 40 forming a stop holding the movement of the turntable 14 along the axis of rotation B. Preferably, the nails 36 are screws or pins having a body and a screw head having one of the radial dimensions greater than the body to form a stop along the axis of rotation B. The nail openings 38 preferably form an angular sector extending around the axis of rotation B so that the nails 36 do not interfere with the movement of the turntable 14. The nails 36 are preferably screwed to the support plate 12 with the end 40 extending beyond the nail opening 38 so as to form a stop along the axis of rotation B. More preferably, the nails 36 and clo openings u 38 are arranged at a central region of the rotary automobile seat 10. Alternatively, the rotary automobile seat 10 may comprise at least one nail 36.

Furthermore, the rotary automobile seat 10 may comprise an anti-tilting member 40 making it possible to prevent the tilting of the rotary plate 14, and therefore of the seat structure, around a tilting axis transverse to the axis of rotation. B. This anti-tilting member 40 can also be called force recovery or anti-rotation or "antiburst" member. In particular, when the rotary automobile seat 10 is mounted on a slide structure 16, the tilting axis is transverse to the rotation axis B and to the slide axis A. The anti-tilting member 40 is disposed at a front portion 42 of the turntable 14. This front portion 42 is opposite to a rear portion 44 at which the passage openings 26 are preferably formed. The anti-tip member forms an arm configured to cooperate with the support plate 12 to prevent rotation of the rotary plate 14 along the tilting axis. The support plate 12 also includes a flat support area 48 extending along the tilt axis and configured to receive the arm. Preferably, the rotary automobile seat 10 comprises two anti-tip members 40 configured to cooperate with two support zones 48 in order to prevent the rotation or the tilting of the rotary automobile seat 10. The two support zones 48 therefore form zones of resumption of forces transmitted by the two anti-tip bodies 40.

A motor vehicle, preferably autonomous, is also proposed, comprising a rotary motor seat 10 as presented here, a body structure as well as two slides 18 mounted on the body structure to each cooperate with a mobile carriage 20. The support plate 12 of the rotary automobile seat is integral with each of the mobile carriages 20 to allow the translation of the rotary automobile seat 10 along the slides 18.

Claims (10)

1. Rotating automobile seat (10) comprising: - a support plate (12) configured to be integral with a slide structure (16) of a motor car, - a rotary plate (14) configured to receive a seat structure, the rotary plate (14) being mounted on the support plate (12) in a rotatable manner to allow the rotation of the seat structure relative to the support plate ( 12) around an axis of rotation (B), - an anti-tearing organ comprising: o a fixing bracket (24) integral with the support plate (12) and extending through a passage opening (26) formed in the rotary plate (14) so that a retaining opening (28) formed in the fixing bracket (24) extends at least partially beyond said passage opening (26), o a retaining body (30) mounted on the turntable (14) and extending through the retaining opening (28) for retaining the movement of the turntable (14) along the axis of rotation (B). 2. Seat (10) according to claim 1, wherein the support plate (12) comprises a first face oriented towards the rotary plate and a second face opposite the first face, the support plate also comprises a holding opening (34) in which is housed the fixing bracket (24), the fixing bracket (24) comprising a holding portion (32) extending transversely to the axis of rotation (B) and pressing against the second face to retain the movement of the fixing bracket (24) along the axis of rotation (B). 3. Seat (10) according to claim 2, wherein the holding opening (34) extends radially relative to the axis of rotation (B). 4. Seat (10) according to one of claims 1 to 3, wherein the retaining body (30) comprises a curved portion forming an angular sector extending around the axis of rotation (B). 5. Seat (10) according to any one of the preceding claims, wherein the passage opening (26) forms an angular sector extending around the axis of rotation (B). 6. Seat (10) according to any one of the preceding claims, the anti-tearing member comprising another fixing bracket (24) and another retaining body (30) cooperating together to retain the movement of the turntable along of the axis of rotation (B), the fixing brackets (24) being arranged on the edges of the support plate (12) opposite to each other. 7. Seat (10) according to any one of the preceding claims, in which the anti-tearing member further comprises at least one nail (36) integral with the support plate (12) and extending through an opening a nail (38) formed in the turntable (14), said nail (36) having one end (40) forming a stop holding the movement of the turntable (14) along the axis of rotation (B). 8. Seat (10) according to any one of the preceding claims, in which the rotary plate (14) comprises: a rear portion (44) at which the passage opening or openings (26) are formed, and - a front portion (42), opposite the rear portion (44), comprising at least one anti-tilting member (40) configured to cooperate with the support plate (12) to prevent rotation of the rotary plate (14) according to a tilt axis transverse to the axis of rotation (B). 9. Seat (10) according to any one of the preceding claims, further comprising a seat structure of a passenger, a backrest and three points of attachment of a three-point seat belt. 10.A motor vehicle comprising: - a rotary automobile seat (10) according to any one of the preceding claims, - a body structure, and 5 - at least two slides (18) mounted on the body structure to cooperate each with a mobile carriage (20), the support plate (12) of the rotary automobile seat (10) being integral with each of the mobile carriages (20) for allow the translation of the rotary automobile seat (10) along the slides (18).