The subject of the invention is a frame for seats in public transport vehicles, used in vehicles such as trams, school buses or other vehicles for transporting passengers on short distances, with low requirements for the comfort of travel.
In the currently existing solutions, the frame for seats in public transport vehicles is an ergonomically shaped bent profile that forms a backrest and a seat. Backrest and seat pillows are attached to this profile. The existing solutions use profiles with a ring section—circular or resembling a square.
Such solutions require reinforcements in the section where the seat transits into the backrest, which raises the vehicle's mass and creates a gap between the pillows' side walls and the profile, where dirt can accumulate. Keys, credit cards or change can potentially be trapped in such places. Depending on the thickness of the used fabric, the gap between the seat and the upholstered element can have different dimensions. The profiles used in this solution make for an unsightly design.
The essence of the invention, namely a frame for a seat in public transport vehicles in the form of shaped bent profile that creates a backrest and a seat pan, to which brackets for the seat pan and backrest pillows are attached consists in that the profile in a section perpendicular to its longitudinal axis has an outline similar to an ellipse, characterized in that its longer section axis is tilted upwards in an outside direction from the vertical plane, which forms the frame's perpendicular bisector, by angle α ranging from 10-30°, preferably 20°.
Preferably, the profile is made from two flat surfaces connected with arching surfaces.
Using the solution according to the invention, the following technical and utilitarian effects were obtained:
The subject of the invention in an exemplary, but not limiting embodiment is shown in a drawing in which
The frame for seats in public transport vehicles is an ergonomically shaped bent L-profile. This profile makes an element of the backrest 3 and the seat pan 2, to which brackets 4 of pillows 5 of the seat pan 2 and the backrest 3, not shown in the drawing, are attached. In the section in plane perpendicular to its longitudinal axis the profile 1 has an outline similar to an ellipse and its longer section axis is tilted upwards in an outside direction from the vertical plane, which forms the frame's perpendicular bisector, by angle α ranging from 10-30°, preferably 20°.
There exist variations of the embodiment where the profile 1 is made from two flat surfaces 7, connected with arching surfaces 8.
Pillows 5 of the seat pan 2 and pillows of the backrest 3 are introduced into a frame shaped in this manner Thanks to their flexibility and the inclined side surface, the pillows 5, when occupied by passengers, tightly adhere to the internal surfaces of profile 1, thus eliminating the gap.
Number | Date | Country | Kind |
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427882 | Nov 2018 | PL | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/PL2019/000104 | 11/19/2019 | WO |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2020/106166 | 5/28/2020 | WO | A |
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Entry |
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International Search Report issued in connection with PCT/PL2019/000104 dated Feb. 21, 2020. |
Search Report issued in connection with Polish Patent Application No. 427882 dated Mar. 22, 2022. |
Number | Date | Country | |
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20220009390 A1 | Jan 2022 | US |