Frame for seats in public transport vehicles

Abstract

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. 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, wherein the profile (1) in a section perpendicular to its longitudinal axis 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°.

Claims

1. A frame for a seat in public transport vehicles in the form of a shaped bent profile that creates a backrest and a seat pan, to which brackets for the seat pan and backrest pillows are attached, wherein the profile (1), in portions of the frame along opposite sides of the seat around attachments to the brackets for seat pan and backrest pillows, has a cross section substantially shaped similar to an ellipse, where a longer section axis of the elliptical shape 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°.

2. The frame according to claim 1, wherein characterized in that the profile (1) is made from two flat surfaces (7), connected with arching surfaces (8).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The subject of the invention in an exemplary, but not limiting embodiment is shown in a drawing in which

(2) FIG. 1 shows the seat's frame in a spatial view,

(3) FIG. 2 shows the frame making a backrest,

(4) FIG. 3 shows the frame making a seat,

(5) FIG. 4 shows the frame's section in A-A plane from FIG. 3,

(6) FIG. 5 shows the frame's section in B-B plane from FIG. 2, and

(7) FIG. 6 shows the detail C from FIG. 5, and

(8) FIG. 7 shows the detail D from FIG. 4

DETAILED DESCRIPTION

(9) 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°.

(10) There exist variations of the embodiment where the profile 1 is made from two flat surfaces 7, connected with arching surfaces 8.

(11) 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.