EP3798085B1 - Fixed window for railway rolling stock car - Google Patents

Description

TECHNICAL AREA

The invention relates to a window, in particular a fixed window for a car of railway rolling stock.

PRIOR ART AND DRAWBACKS OF PRIOR ART

In known manner, the end motor cars of rolling stock include fixed windows, the function of which is to protect an optical instrument such as a headlight. This window comprises a pane which is glued to an aluminum or composite material frame, which frame is itself secured to the body of the vehicle by screwing.

This solution nevertheless has drawbacks. Indeed, because of the weather and aerodynamic forces to which these windows are subjected, it is quite common for the glass to come off the frame, exposing the headlight to these same weather and aerodynamic forces.

The document DE 201 13 220 U1 describes a fixed window for a railway rolling stock car, intended to cover an opening made in the body of the rolling stock car, which window comprises a first so-called fixing frame provided to be secured to the edge of the opening and a pane comprising a main protective glazed part which is placed on the fixing frame, covering the opening.

OBJECTIVE OF THE INVENTION

The invention therefore aims to provide a fixed window for a car of railway rolling stock, which is more robust and requires little maintenance.

DISCLOSURE OF THE INVENTION

To this end, the invention relates to a fixed window for a railway rolling stock car, intended to cover an opening made in the body of the rolling stock car, which window comprises a first so-called fixing frame provided to be secured to the edge of the opening and a pane comprising a main protective glazed part and which is arranged on this fixing frame covering the opening, characterized in that the window comprises a second so-called enclosing frame arranged on the pane, which pane comprises at least one peripheral tab which protrudes from the peripheral edge of its main glazed part, and which is clamped between the fixing frame and the clamping frame secured together.

• La vitre comprend une bordure périphérique qui comporte une pluralité de pattes périphériques et d'évidements.
• Le cadre de fixation comprend des moyens de fixation destinés à solidariser ledit cadre de fixation à la bordure de l'ouverture, lesquels moyens de fixation comprennent des premiers perçages qui sont disposés en regard des évidements de la bordure périphérique de la vitre.
• Le cadre d'enserrement comprend des échancrures coïncidant avec les premiers perçages du cadre de fixation et avec les évidements de la vitre.
• La fenêtre comprend des moyens de solidarisation du cadre d'enserrement au cadre de fixation, lesquels moyens de solidarisation comprennent des deuxièmes perçages ménagés dans le cadre de fixation et des troisièmes perçages ménagés dans le cadre d'enserrement en regard des deuxièmes perçages, et les évidements de la vitre coïncident avec les deuxièmes et les troisième perçages pour permettre la solidarisation du cadre d'enserrement au cadre de fixation.
• Les deuxièmes perçages sont répartis par paires autour du cadre de fixation, chaque paire de deuxièmes perçages étant disposée à proximité et de part et d'autre de l'un des premiers perçages, et les évidements de la vitre sont plus larges que les échancrures du cadre d'enserrement pour permettre le vis-à-vis direct des deuxièmes perçages du cadre de fixation aux troisièmes perçages du cadre d'enserrement.
• Le cadre de fixation, le cadre d'enserrement et la vitre présentent la même forme polygonale, préférentiellement rectangulaire ou carré.
• Les premiers, deuxièmes et troisièmes perçages sont localisés sur les montants du cadre de fixation, respectivement du cadre d'enserrement, au voisinage des plans médians perpendiculaires, et au niveau des sommets du cadre de fixation, respectivement du cadre d'enserrement.
• Le cadre de fixation comprend au moins un premier joint périphérique logé dans une première rainure périphérique ménagée sur une face du cadre de fixation destinée à venir en vis-à-vis des bords de l'ouverture de carrosserie, et un second joint périphérique logé dans une seconde rainure périphérique ménagée sur une face opposée du cadre de fixation en vis-à-vis du second d'enserrement.
• La patte périphérique et la partie principale vitrée de la vitre sont coplanaires et la vitre comprend deux épaulements périphériques à la jonction entre la partie principale et la patte périphérique et qui sont respectivement en regard du bord interne du cadre de fixation et du bord interne du cadre d'enserrement, de sorte que la partie principale soit logée dans lesdits cadres de fixation et d'enserrement.
• La vitre comprend une bordure périphérique circonférentielle de largeur définie qui s'étend sur le pourtour de la partie principale vitrée de protection.
• Le cadre de fixation comprend des moyens de fixation à la bordure de l'ouverture, lesquels moyens de fixation comprennent des premiers perçages qui sont disposés à une distance minimum du pourtour de la partie principale vitrée supérieure à la largeur définie de la bordure circonférentielle, de sorte que les premiers perçages ne soient pas en vis-à-vis de la bordure circonférentielle.
• La fenêtre comprend des moyens de solidarisation du cadre d'enserrement au cadre de fixation, lesquels moyens de solidarisation comprennent des seconds perçages ménagés dans le cadre d'enserrement en regard des premiers perçages pour permettre la solidarisation du cadre d'enserrement au cadre de fixation.
• Les premiers et seconds perçages sont localisés au voisinage du milieu des montants respectivement du cadre de fixation et du cadre d'enserrement et au niveau de leurs quatre sommets respectifs.
• Le cadre de fixation comprend au moins un premier joint périphérique ménagé sur une face du cadre de fixation destinée à venir en vis-à-vis des bords de l'ouverture de carrosserie, et le cadre d'enserrement comprend un second joint périphérique ménagé sur une face du cadre d'enserrement en vis-à-vis de la bordure circonférentielle.
• La bordure circonférentielle et la partie principale vitrée de la vitre sont coplanaires, et en ce que la vitre comprend au moins un épaulement périphérique à la jonction entre la partie principale et la bordure circonférentielle et qui est en regard du bord interne du cadre d'enserrement, de sorte que la partie principale soit logée dans ledit cadre d'enserrement.
• Le cadre d'enserrement comprend une saillie périphérique logée dans un évidemment périphérique ménagé dans le cadre de fixation.

The fixed window can also include the following optional characteristics considered separately or according to all possible technical combinations:

• The pane includes a peripheral edge that has a plurality of peripheral tabs and recesses.
• The fixing frame comprises fixing means intended to secure said fixing frame to the edge of the opening, which fixing means comprise first holes which are arranged facing the recesses of the peripheral edge of the window.
• The enclosing frame comprises indentations coinciding with the first holes of the fixing frame and with the recesses of the pane.
• The window comprises means for securing the clamping frame to the fixing frame, which securing means comprise second holes made in the fixing frame and third holes made in the clamping frame facing the second holes, and the recesses of the window coincide with the second and third holes to allow the attachment of the clamping frame to the fixing frame.
• The second holes are distributed in pairs around the fixing frame, each pair of second holes being arranged close to and on either side of one of the first holes, and the recesses of the window are wider than the notches of the enclosing frame to allow direct vis-à-vis the second holes of the fixing frame to the third holes of the enclosing frame.
• The fixing frame, the enclosing frame and the pane have the same polygonal shape, preferably rectangular or square.
• The first, second and third holes are located on the uprights of the fixing frame, respectively of the clamping frame, in the vicinity of the perpendicular median planes, and at the level of the vertices of the fixing frame, respectively of the clamping frame.
• The fixing frame comprises at least a first peripheral seal housed in a first peripheral groove formed on one face of the fixing frame intended to come face to face with the edges of the bodywork opening, and a second peripheral seal housed in a second peripheral groove provided on an opposite face of the fixing frame vis-à-vis the second clamping.
• The peripheral tab and the main glazed part of the window are coplanar and the window comprises two peripheral shoulders at the junction between the main part and the peripheral tab and which are respectively facing the internal edge of the fixing frame and the internal edge of the frame clamping, so that the main part is housed in said fixing and clamping frames.
• The pane comprises a circumferential peripheral border of defined width which extends around the perimeter of the main protective glazed part.
• The fixing frame comprises means for fixing to the border of the opening, which fixing means comprise first holes which are arranged at a minimum distance from the periphery of the main glazed part greater than the defined width of the circumferential border, so that the first holes are not opposite the circumferential edge.
• The window comprises means for securing the clamping frame to the fixing frame, which securing means comprise second holes provided in the clamping frame opposite the first drillings to allow the fixing of the clamping frame to the fixing frame .
• The first and second holes are located in the vicinity of the middle of the uprights respectively of the fixing frame and of the clamping frame and at the level of their respective four vertices.
• The fixing frame comprises at least one first peripheral seal made on one face of the fixing frame intended to come face to face with the edges of the bodywork opening, and the gripping frame comprises a second peripheral seal made on one face of the enclosing frame facing the circumferential edge.
• The circumferential border and the main glazed part of the pane are coplanar, and in that the pane comprises at least one peripheral shoulder at the junction between the main part and the circumferential border and which faces the internal edge of the frame clamping, so that the main part is housed in said clamping frame.
• The enclosing frame comprises a peripheral projection housed in a peripheral recess made in the fixing frame.

The invention also relates to an end car of railway rolling stock, the bodywork of which comprises at least one recess in which is formed an opening in which a headlight is housed, which recess defines at least in part the edges of the opening on which is attached a fixed window as described above.

The invention finally relates to railway rolling stock comprising at least one end car as described above.

PRESENTATION OF FIGURES

• [Fig. 1] La figure 1 représente une vue de dessus de la fenêtre de l'invention selon un premier mode de réalisation, logée dans un renfoncement ménagé dans la carrosserie d'une voiture d'extrémité d'un matériel ferroviaire roulant ;
• [Fig. 2a] La figure 2a représente une vue en perspective du premier cadre de la fenêtre de la figure 1 ;
• [Fig. 2b] La figure 2b représente une vue en perspective de la vitre de la fenêtre de la figure 1 ;
• [Fig. 2c] La figure 2c représente une vue en perspective du second cadre de la fenêtre de la figure 1 ;
• [Fig. 3] la figure 3 représente une vue en coupe selon la ligne III-III de la figure 1 d'une partie de la fenêtre installée dans le renfoncement ménagé dans la carrosserie de la voiture du matériel ferroviaire roulant ;
• [Fig. 4] La figure 4 représente une vue éclatée en perspective de la fenêtre fixe de l'invention selon un second mode de réalisation ;
• [Fig. 5a] La figure 5a représente une vue en perspective du premier cadre de la fenêtre de la figure 4 ;
• [Fig. 5b] La figure 5b représente une vue en perspective de la vitre de la fenêtre de la figure 4 ;
• [Fig. 5c] La figure 5c représente une vue en perspective du second cadre de la fenêtre de la figure 4 ;
• [Fig. 6] La figure 6 représente une vue en perspective d'une partie de la carrosserie d'une voiture d'extrémité d'un matériel ferroviaire roulant.

Other characteristics and advantages of the invention will emerge clearly from the description given below, by way of indication and in no way limiting, with reference to the appended figures, among which:

• [ Fig. 1 ] The figure 1 shows a top view of the window of the invention according to a first embodiment, housed in a recess made in the body of an end car of railway rolling stock;
• [ Fig. 2a ] The figure 2a represents a perspective view of the first window frame of the figure 1 ;
• [ Fig. 2b ] The figure 2b depicts a perspective view of the window pane of the figure 1 ;
• [ Fig. 2c ] The figure 2c shows a perspective view of the second window frame of the figure 1 ;
• [ Fig. 3 ] the picture 3 represents a sectional view along the line III-III of the figure 1 part of the window installed in the recess made in the body of the rolling stock car;
• [ Fig. 4 ] The figure 4 shows an exploded perspective view of the fixed window of the invention according to a second embodiment;
• [ Fig. 5a ] The figure 5a represents a perspective view of the first window frame of the figure 4 ;
• [ Fig. 5b ] The figure 5b depicts a perspective view of the window pane of the figure 4 ;
• [ Fig. 5c ] The figure 5c shows a perspective view of the second window frame of the figure 4 ;
• [ Fig. 6 ] The figure 6 shows a perspective view of part of the body of an end car of railway rolling stock.

DETAILED DESCRIPTION OF THE INVENTION

It is first of all specified that in the figures, the same references designate the same elements regardless of the figure in which they appear and regardless of the form of representation of these elements. Similarly, if elements are not specifically referenced in one of the figures, their references can easily be found by referring to another figure.

It is also specified that the figures essentially represent two embodiments of the subject of the invention but that there may be other embodiments which correspond to the definition of the invention.

With reference to figure 1 , 3 and 6 , the window 1 of the invention is housed in a recess 13 formed in the bodywork 2 of an end car 30, in particular a power car 30, of railway rolling stock, in particular a train for the transport of passengers of the high-speed train type. The recess 13 and the window 1 are of complementary rectangular shape, knowing that other polygonal shapes are possible both for the window 1 and for the recess 13. In addition, the depth of the recess 13 is equal to the thickness of the window 1, so that window 1 is flush with the rest of bodywork 2 of end car 30.

With reference to the picture 3 , an opening 20 is made in the recess 13, which recess 13 further defines the edges 21 of said opening 20 on which the window 1 is fixed, as will be described later. In this opening 20 is housed a headlight 22 (see figure 6 ) which in fact is protected by the fixed window 1 which covers said opening 20.

With reference to figures 1 to 6 , the window 1, 1' comprises three elements stacked on top of each other: a first so-called fixing frame 3, 3' secured to the edges 21 of the opening 20, a transparent pane 4, 4' placed on the first frame 3, 3', and a second so-called enclosing frame 5, 5' arranged on the pane 4, 4' and secured to the fixing frame 3, 3'.

Window 1 will now be described in a first embodiment.

With reference to the figure 2a and 3 , the fixing frame 3 is made of a metallic material, in particular aluminum, and comprises continuous edges. The fixing frame 3 comprises means for fixing said frame 3 to the edges 21 of the opening 20, these fixing means comprising first holes 15 formed in the frame 3 and fixing screws 18. The first holes 15 are eight: four at the tops of the fixing frame 3, and four in the vicinity of the middle of the respective uprights of the fixing frame 3. This uniform distribution of the fixing means reinforces the robustness of the fixing of the window 1 to the border 21 of opening 20.

The fixing frame 3 further comprises a first peripheral seal 10 made on one side of the fixing frame 3 facing the edges 21 of the opening 20. This first seal 10 seals the window 1 and protects the headlight 22 from water and more generally from humidity.

Moreover, so as to further improve the tightness of the window 1, the latter comprises an additional sealing member 100 housed in the space remaining between the window 1 and the edges 21 of the opening 20. Typically, this member sealant 100 is made of silicone.

With reference to figure 1 , 2b and 3 , the window 4, which is made of a transparent polymer material, in particular polycarbonate, comprises a main protective part 6 facing the opening 20 and which protects the headlight 22 housed in said opening 20. The window 4 also comprises a circumferential peripheral edge 70 enclosed between the fixing frame 3 and the enclosing frame 5, the main part 6 and the circumferential edge 70 being parallel to each other.

Thus, the pane 4 is securely attached to the rest of the window 1 without requiring glue or any binder likely to degrade. The robustness of the enclosing of the pane 4 and of the fixing of the window 1 to the border 21 is in no way affected by bad weather or the aerodynamic forces to which the window 1 is subjected.

The transparent window comprises at its junction between its main part 6 and its circumferential edge 70 a peripheral shoulder 14. This shoulder 14 is facing the internal edge of the clamping frame 5, which allows the correct positioning of the pane 4 by housing its main part 6 inside the clamping frame 5.

The circumferential border 70 extends around the periphery of the main glazed protective part over a width L, which is constant over the entire periphery of the circumferential border 70, while the first holes 15 are arranged at a minimum distance from the periphery of the part main window 6 greater than said width of the circumferential border 70. Thus, the first holes 15 are not opposite the circumferential border 70, and an operator can have access to the fixing screws 18 of the fixing frame 3 to the edge 21 of the opening 20, to allow it to fix or on the contrary to remove the window 1 at the level of the recess 13, without the fixing screws 18 coming into contact with the pane 4.

With reference to figure 2c and 3 , the enclosing frame 5 is made of a metallic material, for example aluminum, like the fixing frame 3. The window 4 comprises means for securing the enclosing frame 5 to the fixing frame 3. These fastening means comprising second holes 16 made in the uprights of the clamping frame 5 opposite the first holes 15 made in the fixing frame 3, and by the fixing screws 18. The fixing screws 18 thus allow both to secure the clamping frame 5 to the fixing frame 3, and the window 1 to the edges 21 of the opening 20. There are thus as many second holes 16 as there are first holes 15.

The enclosing frame 5 further comprises a second peripheral seal 12 formed on one face of the enclosing frame 5 facing the circumferential edge 70 of the pane 4. This second seal 12 reinforces the sealing of the window 1 and protects the headlight 22 from water and more generally from humidity.

Moreover, so as to further improve the sealing of the window 1, the latter comprises a second additional sealing member 120 housed in the space remaining between the pane 4 and the enclosing frame 5. Typically, this sealing member 120 seal is made of silicone.

Finally, the enclosing frame 5 comprises a peripheral projection 9 housed in a peripheral recess 8 provided in the fixing frame 3. In this way, the correct placement of the enclosing frame 5 on the fixing frame 3 is facilitated.

• le premier cadre de fixation 3 comprenant les premiers perçages 15 pour permettre grâce aux vis 18 la fixation de la fenêtre 1 à la bordure 21 de l'ouverture 20 ;
• la vitre 4 qui comprend une partie centrale 6, une bordure périphérique circonférentielle 70 et un épaulement 14 de positionnement dans le cadre d'enserrement 5. La bordure circonférentielle 70 présente en outre une largeur inférieure à la distance définie séparant les premiers perçages du pourtour de la partie principale vitrée 6. La bordure circonférentielle 70 n'est ainsi pas en vis-à-vis des premiers perçages 15 ;
• le second cadre d'enserrement 5 qui comprend des seconds perçages 16 en vis-à-vis direct des premiers perçages 15 pour permettre grâce aux vis 18 de solidariser le cadre d'enserrement 5 au cadre de fixation 3, et d'enserrer la bordure périphérique circonférentielle 70 entre les deux cadres 3, 5.

Thus, the window 1 of the invention comprises three superimposed elements including:

• the first fixing frame 3 comprising the first holes 15 to allow, thanks to the screws 18, the fixing of the window 1 to the edge 21 of the opening 20;
• the pane 4 which comprises a central part 6, a circumferential peripheral border 70 and a shoulder 14 for positioning in the enclosing frame 5. The circumferential border 70 also has a width less than the defined distance separating the first holes from the periphery of the main glazed part 6. The circumferential border 70 is thus not opposite the first holes 15;
• the second enclosing frame 5 which comprises second holes 16 directly opposite the first holes 15 to allow, thanks to the screws 18, to secure the enclosing frame 5 to the fixing frame 3, and to enclose the border circumferential peripheral 70 between the two frames 3, 5.

Window 1' will now be described in a second embodiment.

With reference to figure 4 and 5a , the fixing frame 3' comprises a first peripheral O-ring seal 10' (not shown) housed in a first peripheral groove formed on one face of the fixing frame 3' facing the edges 21 of the opening 20. This first seal 10' seals the window 1 and protects the headlight 22 from water and more generally from humidity.

Moreover, so as to further improve the tightness of the window 1', the fixing frame 3' comprises a second peripheral O-ring 12' housed in a second peripheral groove formed on the opposite face of the fixing frame 3' in screws -à-vis the 5' enclosing frame.

With reference to figure 4 and 5b , the peripheral edge 70' of the pane 4' comprises several peripheral tabs 7', clamped between the fixing frame 3' and the clamping frame 5', and recesses 8' facing the first holes 15' formed in the 3' mounting frame. In other words, the pane 4' comprises eight recesses 8', four of which are formed at the level of the respective vertices of the pane 4' and four others are formed near the center of the edges of the pane 4'. In this way, an operator can have access to the fixing screws (not shown) of the fixing frame 3 'to the edge 21 of the opening 20, to enable him to fix or on the contrary to remove the window 1 at the level of the recess 13, without the fixing screws 18' coming into contact with the pane 4'.

Of course, the window 1' remains functional as long as the edge 70' of the pane 4' comprises at least one peripheral tab 7', provided that the recesses 8' face the first holes 15' formed in the fixing frame 3 '.

The transparent pane 4' comprises at its junction between its main part 6' and its peripheral edge 70' two peripheral shoulders 14', 14" on either side of the peripheral edge 70'. One of the shoulders 14" is opposite the internal edge of the fixing frame 3', which allows the correct positioning of the pane 4' on the fixing frame 3' by housing its main part 6' inside the fixing frame 3'. The other shoulder 14' faces the internal edge of the enclosing frame 5', which allows the correct positioning of said enclosing frame 5' on the window 4', by housing the main part 6' of the window 4 'inside the frame 5'.

With reference to figure 4 and 5c , the window 1' comprises means for securing the enclosing frame 5' to the fixing frame 3'. These securing means comprising second holes 16' made in the uprights of the fixing frame 3', and third holes 17' made in the uprights of the clamping frame 5' and securing screws (not shown).

The second holes 16' are sixteen in number, and each post of the fixing frame 3' comprises four second holes 16': two arranged near the opposite ends of said post, and two near the middle of the post arranged on either side. 'other of the first associated hole 15'. The third holes 17' are also sixteen in number, and are arranged facing the second holes 16' of the fixing frame 3'. In other words, the clamping frame 5' comprises two holes 17' in the vicinity of each vertex, and two drillings 17' in the vicinity of the middle of the uprights of the clamping frame 5'. This uniform distribution of the fastening means reinforces the robustness of the fastening of the clamping frame 5' to the fastening frame 3'.

In addition, to allow an operator to secure the clamping frame 5' to the fixing frame 3', the recesses 8' of the pane 4' are opposite the second 16' and third 17' holes. The second 16' and third holes 17' are therefore directly opposite each other, which prevents the securing screws from coming into contact with the pane 4'.

The enclosing frame 5' comprises notches 9' facing the first holes 15' made in the fixing frame 3', each notch being positioned between two of the third holes 17'. In this way, the operator can have access to the fixing screws 18' of the fixing frame 3' at the edge 21 of the opening 20, to enable him to fix or on the contrary to remove the window 1' at the level of the recess 13 without the fixing screws 18' coming into contact with the enclosing frame 5'. In fact, the notches 9' of the enclosing frame 5' and the recesses 8' of the pane 4' are opposite each other. In addition, so as to clear the means for securing the fixing frame 3' to the clamping frame 5', the recesses 8' of the pane 4' are wider than the notches 9' of the clamping frame 5' , and are opposite the first, second and third bores 15', 16', 17'.

• le premier cadre de fixation 3' comprenant les premiers perçages 15' pour permettre grâce aux vis la fixation de la fenêtre 1' à la bordure 21 de l'ouverture 20, et les deuxièmes perçages 16' disposés par paire de part et d'autre du premier perçage associé 15' ;
• la vitre 4' qui comprend une partie centrale 6', une bordure périphérique 70' et deux épaulements 14', 14" de positionnement dans le cadre respectivement de fixation 3' et d'enserrement 5'. La bordure 70' est en outre formée de pattes de fixation 7' et d'évidements 8' disposés en vis-à-vis des premiers perçages 15' et de deuxièmes perçages 16' ;
• le second cadre d'enserrement 5' qui comprend des troisièmes perçages 17' en vis-à-vis direct des deuxièmes perçages 16' pour permettre grâce aux vis 19' de solidariser le cadre d'enserrement 5' au cadre de fixation 3', et d'enserrer les pattes périphériques 7' entre les deux cadres 3', 5'. Le cadre d'enserrement 5' comprend en outre des échancrures 9' en regard des évidements 8' et moins larges que ces derniers, lesquelles échancrures 9' sont en vis-à-vis des premiers perçages 15'.

Thus, the window 1' of the invention comprises three superimposed elements including:

• the first fixing frame 3' comprising the first holes 15' to allow the fixing of the window 1' to the edge 21 of the opening 20 by means of the screws, and the second holes 16' arranged in pairs on either side the first associated hole 15';
• the pane 4' which comprises a central part 6', a peripheral border 70' and two shoulders 14', 14" for positioning in the fixing frame 3' and clamping frame 5' respectively. The border 70' is further formed fixing lugs 7' and recesses 8' arranged opposite the first holes 15' and second holes 16';
• the second clamping frame 5' which comprises third holes 17' directly opposite the second drillings 16' to allow, thanks to the screws 19', to secure the clamping frame 5' to the fixing frame 3', and to enclose the peripheral tabs 7' between the two frames 3', 5'. The clasping frame 5' further comprises indentations 9' opposite the recesses 8' and narrower than the latter, which indentations 9' are opposite the first bores 15'.

Claims (11)

1. Fixed window (1, 1') for a railway rolling stock car (30), intended to cover an opening (20) formed in the bodywork (2) of the stock car (30), which window (1, 1') comprises a first, so-called fixing frame (3, 3') provided to be secured at the border (21) of the opening (20) and a glass pane (4, 4') comprising a protective glazed main part (6, 6') and which is disposed on the fixing frame (3, 3') covering the opening (20), wherein the window (1, 1') comprises a second, so-called tight-fitting frame (5, 5') disposed on the glass pane (4, 4'), which glass pane (4, 4') comprises at least one peripheral lug (7, 7') which protrudes from the peripheral edge of its glazed main part (6, 6'), and which is fitted tightly between the fixing frame (3, 3') and the tight-fitting frame (5, 5') that are secured together.
2. Window (1) according to the preceding claim, wherein the glass pane (4) comprises a circumferential peripheral border (70) of defined width (L) which extends over the perimeter of the protective glazed main part (6).
3. Window (1) according to the preceding claim, wherein the fixing frame (3) comprises means for fixing to the border (21) of the opening (20), which fixing means comprise first drill-holes (15) which are disposed at a minimum distance from the perimeter of the glazed main part (6) greater than the defined width of the circumferential border (70), such that the first drill-holes (15) are not facing the circumferential border (70).
4. Window (1) according to Claim 2 or 3, wherein it comprises means for securing the tight-fitting frame (5) to the fixing frame (3), which securing means comprise second drill-holes (16) formed in the tight-fitting frame (5) facing the first drill-holes (15) to allow the tight-fitting frame (5) to be secured to the fixing frame (3).
5. Window (1) according to any one of the preceding claims, wherein the fixing frame (3), the tight-fitting frame (5) and the glass pane (4) have the same polygonal form, preferentially rectangular or square.
6. Window (1) according to Claims 4 and 5, wherein the first (15) and second (16) drill-holes are located close to the middle of the uprights respectively of the fixing frame (3) and of the tight-fitting frame (5) and at their four respective vertices.
7. Window (1) according to any one of the preceding claims, wherein the fixing frame (3) comprises at least one first peripheral seal (10) formed on a face of the fixing frame (3) intended to come opposite the edges of the opening (20) of the bodywork (2), and in that the tight-fitting frame (5) comprises a second peripheral seal (12) formed on a face of the tight-fitting frame (5) facing the circumferential border (70).
8. Window (1) according to any one of the preceding claims, wherein the circumferential border (70) and the glazed main part (6) of the glass pane (4) are parallel to one another, and in that the glass pane (4) comprises at least one peripheral shoulder (14) at the join between the main part (6) and the circumferential border (70) and which faces the inner edge of the tight-fitting frame (5), such that the main part (6) is housed in said tight-fitting frame (5).
9. Window (1) according to any one of the preceding claims, wherein the tight-fitting frame (5) comprises a peripheral protuberance (9) housed in a peripheral recess (8) formed in the fixing frame (3) .
10. End car (30) of railway rolling stock, the bodywork (2) of which comprises at least one indentation (13) in which is formed an opening (20) in which a headlight (22) is housed, which indentation (13) at least partly defines the edges (21) of the opening to which edges (21) a fixed window (1) according to any one of Claims 1 to 9 is secured.
11. Railway rolling stock comprising at least one end car (30) according to Claim 10.

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