Vehicle seat having a pivot mechanism
AssigneeBertrand Faure Equipements SA
InventorsEmmanuel Levert, Franck Lepaule
Life of this patent
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Abstract
A vehicle seat comprises a backrest mounted on a seat by means of a pivot mechanism comprising two flanges fixed respectively to the seat and the backrest and linked one to the other by means of a single-train hypocycloid gear mechanism which causes the backrest to pivot about an axis of rotation which in turn moves in circular translation about a fixed axis. The gear mechanism is driven by a control shaft which is centered on the axis of rotation on a level with said gear mechanism and which has a part forming a crank comprising an end centered on the fixed axis, which end is driven in rotation by an electric motor mounted on the seat part.
Claims5
A vehicle seat comprising first and second parts mounted so as to pivot relative to one another by means of a first pivot mechanism comprising:
- a single-train hypocycloid gear mechanism, this gear mechanism comprising first and second annular sets of teeth meshing one with the other and joined respectively to the first and second parts of the seat, the first and second sets of teeth being arranged so that one extends radially towards the exterior and the other radially towards the interior and said first and second teeth respectively have first and second transverse horizontal central axes, offset one from the other,
- a cam mounted so as to rotate on the one hand relative to the first set of teeth about the first axis and on the other relative to the second set of teeth about the second axis in order to drive the first and second sets of teeth in relative rotation,
- and a control shaft which is joined to the cam and which is centered on the second axis on a level with said cam, wherein the control shaft has a part forming a crank, comprising an activating member which is centered on the first axis and which is driven in rotation by an electric motor on the first part of the seat.
Dependencies are inferred from the claim text.