AU700495B2

AU700495B2 - Passenger train carriage with an insulated wall element

Info

Publication number: AU700495B2
Application number: AU50032/96A
Authority: AU
Inventors: Ulrike Bengesser; Reiner Brehm; Klaus Koppel; Oliver Weber
Original assignee: ABB Daimler Benz Transportation Schweiz AG; ABB Daimler Benz Transportation Deutschland GmbH
Current assignee: Alstom Transportation Germany GmbH
Priority date: 1995-03-17
Filing date: 1996-03-05
Publication date: 1999-01-07
Anticipated expiration: 2016-03-05
Also published as: HU9603003D0; AU5003296A; WO1996029225A1; NO964873D0; ES2133946T3; EP0759867B1; DE59602471D1; HU220899B1; JPH09507815A; NO964873L; PL317151A1; EP0759867A1; DE19509676A1; CZ327996A3; CZ282623B6; HUP9603003A2; JP2873097B2; HUP9603003A3; NO311793B1; ATE182296T1

Abstract

The invention concerns a wall element for a passenger train wagon, said element comprising a profiled plate (1) and an insulating layer (6) secured thereto by a retention pin (5). In order to be able to fit the retention pin simply and mount it such that it is displaceable, the profiled plate (1) bears, on its side face (3) facing the insulating layer (6), at least one elongate retaining web profiled section (9). At least one retaining pin (5) is displaceably secured on a retaining web profiled section.

Description

Fig.4 an enlarged perspective view of the embodiment according to Fig.3 in the region of a retention pin, and Fig.5 a retention pin with base in the non-assembled initial state.

A passenger train carriage, not illustrated in detail, has wall elements, which enclose the passenger compartment to the outside. On this occasion the wall elements are made of plane or curved profiled plates 1, wherein between two outside and inside wall surfaces 2, 3, which are essentially parallel to each other, preferably zig-zag shaped supporting webs 4 are provided. Such profiled plates 1 are manufactured by extrusion process preferably from aluminium alloys. In addition, the wall element is fitted on its inside wall surface 3 with a retention pin 5, onto which an insulating layer 6 is slipped in the form of an insulating mat with thermal and/or sound insulating properties. Several retention pins 5, provided in a distributed manner, are used to retain a large-area insulating layer 6. To secure the insulating layer 6, on the free pointed end of the respective retention pin 5 a large-area support disc is pushed on, so that the insulating layer 6 will be held securely in its required position. The support disc 7 is provided with flexible expansion prongs 8, which surround the retention pin 5 radially and are inclined against the push-on direction, i.e. towards the free end of the retention pin To enable the fastening of several retention pins on the profiled plate 1 in a simple manner, it has on its lateral surface 3, which is facing the insulation layer 6, at least one longitudinally extending retaining flange section 9, which extends at least approximately over the length of the profiled plate 1 and at the same time it runs parallel to the longitudinal direction of the supporting webs 4. At the same time the retaining flange section 9 can be constructed as an independent extruded section which is subsequently fastened on the lateral surface 3 by means of screwing, riveting, bonding or the like. However, the retaining flange section is preferably pressed integrally against the profiled plate 1 during manufacture. In this case the retaining flange section 9 consists of a base plate 10, which, in case of an integral connection with the profiled plate 1, is identical with the lateral surface 3. In this case it lies in the same plane as the lateral surface 3 or is part of same. On the base plate there are angular bars 11 facing towards the insulating layer 6, one of their legs being at right angles to the base plate and the free legs 12 pointing away from each other. Thus the angular bars 11 form a T-like cross-section, whereby the central web is divided and the angular bars 11 formed by this run at a distance and parallel to each other. The retention pin is provided with an exactly opposing base 13 which has a Cshaped cross-section, which base has a counter profile matching the web in a form-locking manner. At the same time the base 13 of the retention pin 5 is formed by a bridge web 14 situated parallel to the adjacent lateral surface 3 of the profiled plate 1, which bridge piece on the opposite situated edges is provided with angular flanges 15, whose free legs 16 are directed exactly opposite to those of the angular bars 11. The bridge web 14 consists of an elastic material and particularly of a plastic material, which is preferably glass-fibre reinforced. By the elastic expansion of the C-shaped section of the base 13, its free legs 16 can snap over the free legs 12 of the angular bar 11, so that the free legs 16 of the bridge web 14 come to a rest in the undercut space formed by the free legs 12 of the retaining flange section 9 between the base plate and the free leg 12. The hooking formed in this manner represents a secure holding of the retention pin 5 on the retaining flange section, while the retention pin 5 can be snapped on in the axial direction at any position on the retaining flange section or displaced to any position. Due to this a correction of the position of the retention pin 5 is feasible at any time by simply displacing it.

It is, of course, also feasible to direct the free legs 12 on the base plate 10 towards each other, so that a C-shaped retaining flange section will result. In this case the free ends 16 of the correspondingly narrower bridge web 14 need to be constructed also facing outward at 180', so that the base 13 will have an essentially T-shaped, matching counter profile.

To simplify the snapping together of the retaining flange section with the counter profile of the retention pin, their free legs 12, 16 are provided with bevels 17 or 18, respectively, which meet during the snapping together and bring about the automatic lateral elastic deflection of the angular flanges 15. On the angular flanges 15, at the transition to the legs 16, elastically deformable prongs can be moulded on, which, when the base 13 is snapped onto the retaining flange section 9, rest elastically on the base plate 10 and hold the legs 12, 16 in an engaged position without rattling.

Incidentally, the retention pin 5 is preferably joined to its base integrally, which is particularly simple when manufacturing it from plastics.

When the retaining flange section 9 is C-shaped, a particular base for the retention pin 5 has proved itself, which base has a basically mushroom-shaped cross-section, in which case the mushroom head overlaps the free ends of the legs 12 of the retaining flange section 9, which legs point towards each other, and at the same time has base pre-tensioning flaps whose free outer edges 21 sit under pressure on the outside of the legs 12. At the same time the base 13 with a base stalk 23 engages the free space of the retaining flange section 9 from within between the legs 12 and it is provided with base expansion prongs 24, which extend from the free end of the base stalk 23 back to the respective pre-tensioning flap 20 and rest on the inside of the leg 12. The base pre-tensioning flaps are inclined from their central region towards their free outside edges 21 relative to the longitudinal axis of the retention pin 5 in such a manner, that they slope towards the plane accommodating the legs 12. The incline of the base pretensioning flaps 20 is approx. 75 to 850, preferably 800, relative to the longitudinal axis of the retention pin 5. The width of the base stalk in the region of the base expansion flaps provided there is smaller than the inside width B of the slot between the angular flanges 11, 12, while the expansion flaps 24 provided opposite each other are inclined to the base stalk 23 outwards at an angle of approx. 15 to 300, preferably at 22 0, relative to the longitudinal axis of the retention pin in such a manner that the free end edges 25 engage from behind the legs 12. To achieve in this case a force-locking or friction-locking seat, thus assuring a durable rattle-free mounting, the outer edges 21 of the base pre-tensioning flaps and the end edges 25 of the expansion flaps 24 are arranged so that in the non-assembled initial state according to they run in parallel planes 26 and 27, the distance between the planes being smaller than the thickness of the material of the legs 12 of the retaining flange section 9. When pushing the base 13, provided with the retention pin 5, into the retaining flange section 9, the base expansion prongs 24 are bent by the narrow longitudinal edges 28 of the legs 12, which face each other, towards the base stalk 23. At the end of the insertion movement the outer edges 21 of the base pre-tensioning flaps will rest on the outside of the legs 12, whereas the end edges of the base expansion prongs 24 are still between the longitudinal edges 28 of the retaining flange section 9. By pushing in further the base stalk 23, the base pre-tensioning flaps 20, which rest obliquely against the legs 12, will be depressed also in their central region against the outside of the legs 12 while elastically deforming, so that the end edges will move from the effective region of the longitudinal edges 28 and the base expansion prongs 24 due to lateral springing can snap into the initial position behind the inside surfaces of the legs 12. When releasing the base 13, the mechanically pre-tensioned base pre-tensioning flaps 20 pull the base stalk 23 outward, so that under mechanical pressure the end edges 25 of the base expansion prongs 24 will rest on the inside surfaces of the flanges 12 as well as the outside edges 21 of the base pre-tensioning flaps 7 The outside edges 21, just like the end edges 25, are parallel to the longitudinal edges 28. To prevent a rotation about the longitudinal axis of the retention pin 5, a rectangular centring lug 29 is situated between the base pre-tensioning flaps 20 which engages the free longitudinal edges 28 of the legs 12, the width of the lug made to fit the inside distance B between the longitudinal edges 28. At the same time this centring lug 29 represents a reliable guide when the retention pin 5 is to be displaced along the retaining flange section 9 against the frictional force.

If a retention pin 5 needs to be removed, at least one of the legs 12 is shortened in its length and depth, thus enabling the lifting out of at least one of the base expansion prongs 24 when the retention pin 5 with the base 13 is moved to this position. If the retention pin 5 is made of a different material than the base 13, it would be useful to embed one end of the retention pin 5 in the base 13, made of elastic plastic material. It is also useful to place a protective cap on the sharp end of the retention pin 5 which protrudes from the insulation 6, thus preventing the danger of injury.

In the case of this construction by and large advantages occur also due to the fact that an optical and acoustical control are possible after the installation by the firm seating of the retention pin with its base. A mechanical loading capability will also result and the elastic mounting affects an end coupling of the insulating mat 6 from the structure-borne noise of the superstructure of the carriage. In addition, by virtue of making the base from a poor heat-conducting material, no cold bridges will occur to the retention pin fixed to it. In addition, the retention pin 5 needs to be fastened in the retaining flange section 9 only when an insulating layer is used which is applied directly to the inside wall surface 3. In addition, the subsequent mounting of retention pins, if required, is feasible without any problem and the base 13 can be produced not only as an injection moulded part but also as a section of an extruded profile in a cost-effective manner.

8 THE CLAILVIS DEFINING THE INVENTION ARE AS FOLLOWS:- 1. A passenger train carriage with a wall element made of profiled plates and an insulating layer fastened onto a profiled plate by means of at least one retention pin which penetrates the insulation layer, wherein a large-area support disc is pushed onto a free pointed end of the retention pin, characterised in that: at least one longitudinally extending retaining flange section is provided on each profiled plate on a side which faces the insulating layer, at least one retention pin is slideably fastened on the retaining flange section; and the at least one retaining flange section has a T- or C-shaped crosssection, and the retention pin has a base with a matching counter profile which engages the retaining flange section in a form-locking manner.

2. A passenger train carriage according to claim 1, characterised in that 15 the retaining flange section has two angular bars which run parallel at a distance from each other, and first free legs which face either away from or .towards each other, and that the base of the retention pin has a bridge web situated parallel to an end face of the profiled plate, the bridge web having angular flanges with opposing edges, while second free legs of the angular S 20 flanges are directed exactly towards those of the retaining flange section.

3. A passenger train carriage according to claim 2, characterized in that the first free legs of the retaining flange section and/or the second free legs of oeoo.

the base of the retention pin have bevelled surfaces.

4. A passenger train carriage according to either claim 2 or 3, 25 characterized in that the first free legs and/or the second free legs have deformable prongs which rest elastically on, respectively, the retaining flange section and/or on the base of the retention pin.

A passenger train carriage according to any one of the preceding claims, characterized in that the retaining flange section is joined integrally to the profiled plate.

6. A passenger train carriage according to any one of claims 1 to 4, characterized in that the retaining flange section is constructed on a separate bar, which is fastened to the profiled plate.

7. A passenger train carriage according to any one of the preceding 35 claims, characterized in that the retention pin is manufactured integrally /A t with its base.

8. A passenger train carriage according to any one of the preceding claims, characterized in that the retention pin with its base is made of plastic material.

9. A passenger train carriage according to claim 8, characterized in that the retention pin with its base is made of glass-fibre reinforced plastic material.

A passenger train carriage according to any one of claims 2 to 9, characterized in that the retaining flange section has a C-shaped construction and that the retention pin has a mushroom-shaped base, which on the outside has pre-tensioning flaps resting on the first free legs of the retaining flange section, which first free legs face each other and engage the retaining flange section with a base stalk, and its base stalk has base expansion prongs, which prongs extend back from the base stalk to the base pre-tensioning flaps and rest in a force-locking manner on an inside of the first free legs.

15 11. A passenger train carriage according to claim 10, characterized in that each of the base pre-tensioning flaps are inclined toward their free outside edges downward to a first plane aligned with the first free legs.

12. A passenger train carriage according to either claim 10 or 11, characterized in that the base has, between the base pre-tensioning flaps, a 20 centring lug which protrudes between free longitudinal edges of the first free legs and whose width fits an inside width between the first free legs.

13. A passenger train carriage according to any one of claims 10 to 12, ooooe characterized in that the expansion prongs on the free end of the base stalk which are provided opposite each other are inclined with an opening angle of 25 approx. 15 to 300 relative to a longitudinal axis of the retention pin.

14. A passenger train carriage according to any one of claims 10 to 13, characterized in that the base pre-tensioning flaps are inclined at approx. to 850 relative to a longitudinal axis of the retention pin.

A passenger train carriage according to any one of claims 12 to 14, characterized in that in a non-assembled initial state of the mushroomshaped base the first plane aligned with the first free legs and the free outside edges of the base pre-tensioning flaps is at a distance from a parallel-running second plane which is aligned with the free ends of the expansion prongs, which distance is less than the thickness of the legs of the retaining flange section.

ff 16. A passenger train carriage according to any one of claims 2 to characterized in that there is at least one portion on the retaining flange section on which at least one of the first free legs are cut out.

17. A passenger train carriage according to any one of the preceding claims, characterized in that the at least one retention pin is embedded at one end in the base made of elastic plastics material.

18. A passenger train carriage according to any one of the preceding claims, wherein each profiled plate is made of aluminium.

19. A passenger train carriage according to any one of the preceding claims, wherein the insulating layer is an insulating mat.

A passenger train carriage substantially as hereinbefore described and with reference to the accompanying drawings.

a Dated this Sixth day of November 1998 ABB DAIMLER-BENZ

TRANSPORTATION

(DEUTSCHLAND) GMBH Patent Attorneys for the Applicant: FBRICE CO