Seat device for a vehicle

Abstract

The invention relates to a seat device (2) for a vehicle, comprising a cushion body (4) and a substantially rigid seat pan (8), which is arranged on a side of the cushion body (4) facing away from the seat surface (6) and to which the cushion body (4) is secured mounted rotatably about a rotation axis (10), and comprising an adjustment unit (12), by which the cushion body (4) is rotatably adjustable about the rotation axis (10) relative to the seat pan (8), and an inclination of the seat surface (6) is adjustable relative to the seat pan (8), which adjustment unit comprises a gearwheel (14) secured rotatably to the seat pan (8) or to the cushion body (4) and rotatable manually or automatically about an adjustment axis (16) running parallel to the rotation axis (10), and comprises an adjustment element (18), which comprises a plurality of teeth and which is arranged supported on the cushion body (4), or on the seat pan (8), transmitting force indirectly or directly and is in meshing engagement with the gearwheel (14).

Description

[0001] Seat device for a vehicle

[0002] The invention relates to a seating device for a vehicle.

[0003] Seating systems for vehicles of various designs are known from the prior art. If the vehicle includes a tilting vehicle, a passenger can be arranged on the seat in addition to the driver.

[0004] Seating devices for vehicles are known from the state of the art in which a seat must be removed for height or tilt adjustment and the height and / or tilt of the seat is adjusted by folding or repositioning connection geometries.

[0005] Furthermore, seating devices are known in which a variable-volume intermediate space is arranged between a seat shell and a cushioned body, into which a fluid, in particular a gas or liquid, can be poured, thereby altering the distance between the cushioned body and the seat pan. It has proven disadvantageous in such seating devices that a fluid reservoir and / or a compression means must be provided on the vehicle in order to adjust the inclination or height of the seat.

[0006] In addition, multi-part seating devices are known in which different actuators can be mechanically controlled to adjust the seat hardness or the inclination of the seat surface. These are designed with multiple parts, and adjusting the inclination of the seat surface proves to be cumbersome.

[0007] An object of an embodiment of the invention is to propose a seat device for a vehicle, in particular for a tilting vehicle, in which a continuous tilt adjustment is made possible in a simplified manner.

[0008] This object is achieved by a seat device for a vehicle, in particular a tilting vehicle, with at least one cushioned body forming a seat surface on a side facing a user of the vehicle, with at least one substantially rigid seat shell arranged on a side of the cushioned body facing away from the seat surface, which can be fixed or is fixed directly or indirectly to a supporting structure of the vehicle and to which the cushioned body is mounted so as to be rotatable about a rotation axis, and with at least one adjustment unit by means of which the cushioned body can be rotated about the rotation axis relative to the seat shell and an inclination of the seat surface with respect to the seat shell can be adjusted, which comprises at least one gearwheel rotatably fixed to the seat shell or the cushioned body, which can be rotated manually or automatically about an adjustment axis running parallel to the rotation axis,and which comprises at least one adjusting element comprising a plurality of teeth, which is arranged on the cushion body or on the seat shell in a directly or indirectly force-transmitting manner and in which the gear wheel is arranged to engage.

[0009] Because the seat device comprises an adjustment unit comprising a gear that is rotatably attached either to the seat shell or to the upholstery body and that interacts to transmit force with an adjustment element that is correspondingly attached to the other component, i.e. the upholstery body or the seat shell, the inclination of the seat surface relative to the seat shell can be continuously adjusted by turning the gear. The term “respectively” is used in its original meaning. This means that the gear and the adjustment element are related to one another. If the gear is attached to the seat shell, the adjustment element is arranged so that it is supported on the upholstery body in a force-transmitting manner. Accordingly, the adjustment element is arranged so that it is supported on the seat shell in a force-transmitting manner if the gear is rotatably attached to the upholstery body.

[0010] A tilting vehicle is understood to mean bicycles, motorcycles or motorcycle-like motor vehicles, such as scooters, in particular two-, three- or four-wheeled scooters, tilting trikes, quads or the like.

[0011] Embodiments of the seat device are conceivable in which the adjusting element comprises a straight or curved rack.

[0012] If the adjusting element comprises a straight rack, the adjusting element can perform a translational movement.

[0013] If the adjusting element comprises an arcuate rack, the adjusting element can perform a rotational movement.

[0014] In a further development of the latter embodiment, it proves to be advantageous if the curved rack is designed in the form of a segment of a circle and if the rack designed in the form of a segment of a circle and the axis of rotation of the cushion body comprise a common circle center.

[0015] In such a case, it is conceivable, for example, that the gearwheel is fixed to the seat shell, and the adjustment element is supported on the cushion body to transmit force. As the gearwheel rotates, the curved rack rotates around the same circle center as the cushion body. This provides a simple kinematic system.

[0016] Embodiments of the seat device are conceivable in which the adjustment element is fixed to the upholstery body or the seat shell in a fixed or detachable manner relative to the upholstery body or the seat shell.

[0017] In such a case, it may prove advantageous if the adjusting element comprises an arcuate rack.

[0018] Furthermore, it proves to be advantageous if the adjusting element and the upholstery body, or if the adjusting element and the seat shell form a common one-piece component, in particular if the adjusting element is formed by a surface section of the upholstery body or the seat shell.

[0019] In this case, the seating device can be designed with reduced components.

[0020] The adjusting element can, for example, if it forms a common one-piece component in the form of a surface section of the cushion body, be arranged on an inner surface of the cushion body which faces the gear.

[0021] As an alternative to an adjustment element fixed to the upholstery body or the seat, embodiments of the seat device are conceivable in which the adjustment element is movable along a translation direction running transversely to the axis of rotation and in which the adjustment unit comprises at least one coupling means which is fixed to the adjustment element and to the upholstery body or the seat shell and by means of which the adjustment element is indirectly supported on the upholstery body or the seat shell in a force-transmitting manner. Because the adjustment element is movable along a translation direction running transversely to the axis of rotation, it is not directly supported on the upholstery body or the seat shell. By means of the at least one coupling means, forces transmitted to the adjustment element by the gear are transferred from the adjustment element via the coupling means on the upholstery body or the seat shell. This results in a relative movement of the upholstery body to the seat shell.

[0022] In principle, it is conceivable that only a single coupling means is provided. Furthermore, it proves advantageous to provide at least two coupling means, each arranged at one end of the adjusting element.

[0023] In a further development of the latter embodiment, it proves to be advantageous if the adjustment unit comprises at least one guide means arranged on the upholstery body or on the seat shell, by means of which the adjustment element can be moved in a guided manner in the translation direction along the upholstery body or along the seat shell.

[0024] This allows the adjustment element to be guided in its translational movement.

[0025] If the adjustment element is movably fixed, for example, by the guide means on the seat shell, the adjustment element moves parallel to the surface of the seat shell facing the upholstery body.

[0026] To increase the seating comfort of the seating device, it is advantageous if the adjustment unit comprises at least one tensioning device by which the upholstered body can be tensioned into a non-deflected basic position and / or if the adjustment unit comprises at least one damping device by which movements of the upholstered body relative to the seat shell can be damped. The tensioning device and damping device together can comprise a spring damper, similar to a spring strut.

[0027] The tensioning device and / or the damping device can each be installed as separate or separable components and support the upholstery body against the seat shell. Furthermore, it is also conceivable for the upholstery body to encompass the tensioning device and / or the damping device in the area of ​​the rotation axis.

[0028] Furthermore, in a further development of the latter embodiment, it is provided that the coupling means comprises the tensioning means and / or the damping means.

[0029] In such a case, the movably fixed adjustment element, which is connected to the upholstery body or to the seat shell via the at least one coupling means, can also be used as a tensioning means and / or as a damping means with reduced components.

[0030] The gear can be rotated manually or automatically around the adjustment axis. In such cases, it is advantageous if the adjustment unit includes at least one manual or automatic drive mechanism by which the gear can be driven in rotation.

[0031] If the adjustment unit comprises an automatic drive means by which the gear wheel can be driven in rotation, adjusting the inclination of the seat surface of the seat device is simplified.

[0032] Further features, details, and advantages of the invention will become apparent from the appended claims, the drawings, and the following description of two preferred embodiments of the seating device. The drawing shows:

[0033] Figure 1 A schematic side view of a first embodiment of the seat device in an undeflected basic position;

[0034] Figure 2 A schematic side view of the embodiment according to Figure 1 in a deflected position;

[0035] Figure 3 A schematic side view of a second embodiment of the seat device in a deflected arrangement.

[0036] The figures show two exemplary embodiments of a seating device, each designated by reference numeral 2, for a vehicle, in particular for a tilting vehicle (not explicitly shown in the figures). The seating devices 2 each comprise a cushioned body 4, which forms a seat surface 6 on a side facing a user of the vehicle.

[0037] In addition, the seat devices 2 each comprise a substantially rigid seat shell 8, which is arranged on a side of the cushion body 4 facing away from the seat surface 6, which can be or is fixed directly or indirectly to a supporting structure of the vehicle (not shown in the figures) and to which the cushion body 4 is mounted so as to be rotatable about a rotation axis 10.

[0038] In addition, the seat device 2 comprises an adjustment unit 12 by means of which the upholstered body 4 can be rotated about the axis of rotation 10 relative to the seat shell 8 and an inclination of the seat surface 6 with respect to the seat shell 8 can be adjusted. For this purpose, the adjustment unit 12 comprises a gear 14 which is rotatably attached to the seat shell 8 and can be rotated about an adjustment axis 16 running parallel to the axis of rotation 10. Furthermore, the adjustment unit 12 comprises an adjustment element 18 which comprises a plurality of teeth which, in the embodiment shown in Figure 1, is permanently attached to the upholstered body 4 in a force-transmitting manner and in which the gear 14 is arranged so as to engage.

[0039] In the embodiment according to Figure 3, the adjusting element 18 is movable relative to the cushion body 4.

[0040] Figure 1 shows a first embodiment of the seat device 2, in which the adjustment element 18 forms a single, common component with the cushion body 4. In this case, rotation of the gear 14 directly leads to a rotation of the cushion body 4 about the rotation axis 10.

[0041] In the embodiment shown in Figures 1 and 2, the adjusting element 18 comprises an arcuate rack. This rack has a common circular center with the rotational axis 10 of the cushion body 4.

[0042] In addition, the embodiment according to Figures 1 and 2 comprises tensioning means 20 and damping means 22, wherein the upholstered body 4 can be pretensioned into an undeflected basic position by the tensioning means 20 and a movement of the upholstered body 4 relative to the seat shell 8 can be damped by the damping means 22.

[0043] Figure 3 shows a second embodiment of the seat device 2, in which the adjustment element 18 is movable relative to the seat shell 8. In the embodiment according to Figure 3, the adjustment unit 12 comprises two coupling means 24, by which the adjustment element 18 is connected to the cushion body 4.

[0044] In the embodiment shown in Figure 3, when the gear 14 rotates about the adjustment axis 16, the adjustment element 18 is moved from left to right in the image plane along a translational direction. The coupling means 24 transmit force to the cushion body 4, causing it to rotate about the rotation axis 10.

[0045] The features of the invention disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination in the realization of the invention in its various embodiments.

[0046] List of reference symbols

[0047] Seating device Upholstery body Seating surface Seat shell

[0048] axis of rotation

[0049] adjustment unit

[0050] gear

[0051] Adjustment axis

[0052] Adjustment element

[0053] Clamping devices Damping devices

[0054] Coupling agent

Claims

Patent claims for a seat device (2) for a vehicle, in particular a tilting vehicle, with at least one upholstered body (4) which forms a seat surface (6) on a side facing a user of the vehicle, with at least one substantially rigid seat shell (8) which is arranged on a side of the upholstered body (4) facing away from the seat surface (6), which can be fixed or is fixed directly or indirectly to a supporting structure of the vehicle and on which the upholstered body (4) is rotatably mounted about a pivot axis (10), and with at least one adjustment unit (12) by which the upholstered body (4) can be rotated about the pivot axis (10) relative to the seat shell (8) and an inclination of the seat surface (6) relative to the seat shell (8) can be adjusted, which comprises at least one gear (14) rotatably fixed to the seat shell (8) or to the upholstered body (4), which can be rotated manually or automatically about an adjustment axis (16) running parallel to the pivot axis (10),and comprising at least one adjusting element (18) comprising a plurality of teeth, which is directly or indirectly supported on the upholstered body (4) or on the seat shell (8) and into which the gear (14) is arranged to engage. Seating device (2) according to claim 1, characterized in that the adjusting element (18) comprises a straight or arcuate rack. Seating device (2) according to claim 2, characterized in that the arcuate rack is designed in the form of a circular segment and that the circularly formed rack and the axis of rotation (10) of the upholstered body (4) have a common circular center. Seating device (2) according to one of the preceding claims, characterized in that the adjusting element (18) is fixedly or permanently fixed to the upholstered body (4) or to the seat shell (8) relative to the upholstered body (4) or the seat shell (8). Seating device (2) according to claim 4, characterized in that the adjusting element (18) and the upholstered body (4) or that the adjusting element (18) and the seat shell (8) form a common one-piece component, in particular that the adjusting element (18) is formed by a surface section of the upholstered body (4) or the seat shell (8). Seating device (2) according to one of claims 1 to 3, characterized in that the adjusting element (18) is movable along a translational direction extending transversely to the axis of rotation (10) and that the adjusting unit (12) comprises at least one coupling means (24) which is attached to the adjusting element (18) and to the upholstered body (4) or the seat shell (8).The seat shell (8) is fixed and the adjusting element (18) is indirectly supported on the upholstered body (4) or on the seat shell (8) by means of which force is transmitted. Seating device (2) according to claim 6, characterized in that the adjusting unit (12) comprises at least one guide means arranged on the upholstered body (4) or on the seat shell (8), by which the adjusting element (18) can be moved in the translational direction along the upholstered body (4) or along the seat shell (8). Seating device (2) according to one of the preceding claims, characterized in that the adjusting unit comprises at least one clamping means (20) by which the upholstered body (4) can be clamped into an undisplaced basic position and / or that the adjusting unit comprises at least one damping means (22) by which movements of the upholstered body (4) relative to the seat shell (8) can be dampened. Seating device (2) according to claim 8, characterized in that the coupling means (24) comprises the clamping means (20) and / or the damping means (22). Seating device (2) according to any of the preceding claims, characterized in that the adjusting unit (12) comprises at least one manual or automatic drive means by which the gear (14) can be driven in a rotating manner.

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