Vehicle and associated vehicle crate
The vehicle body design addresses thermal conduction issues in railway vehicles by employing thermally insulating support elements with C-rails and screws, enhancing insulation and reducing costs and assembly time.
Patent Information
- Application Number
- FR2021001216
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-02-09
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2041-02-09
AI Technical Summary
Existing vehicle bodies, such as railway vehicles, face significant thermal conduction issues at support elements due to large contact surfaces, leading to reduced thermal insulation and increased manufacturing costs and assembly time.
A vehicle body design featuring thermally insulating support elements made of materials like polyamide 6.6, with C-rails and screws for attachment, and optionally a fixing wedge, to minimize thermal conduction while reducing manufacturing costs and assembly time.
The design effectively limits thermal conduction between the inside and outside of the vehicle body, reduces manufacturing costs, and simplifies assembly by using lightweight, thermally insulating support elements with robust fastening methods.
Smart Images
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Abstract
Description
Title of the invention: Vehicle body and associated vehicle
[0001] The present invention relates to a vehicle body, such as a railway vehicle.
[0002] The invention also relates to a vehicle, such as a railway vehicle, comprising such a body.
[0003] The invention applies to the field of transport, in particular rail transport.
[0004] Vehicles, such as railway vehicles, generally have a body for transporting, for example, passengers. Such a body often consists of an outer wall in direct contact with the outside atmosphere and an inner wall defining the internal volume of the vehicle. The space between these two walls helps, in particular, to limit heat conduction between the inside of the body and the outside.
[0005] Furthermore, such a case includes support elements between the two walls, allowing the inner wall to be fixed to the outer wall opposite each other. These support elements are generally made of aluminum. In order for the support elements to hold the walls as stably as possible, it is necessary that the support elements have a large contact surface with the walls and robust fastening means.
[0006] One existing problem is that thermal conduction is significant at the level of the support elements, which implies reduced thermal insulation of the box. Furthermore, the larger the contact surface between the support elements and the walls, the greater the thermal conduction through the support element, between the inside and outside of the box.
[0007] In order to improve the insulation of the box, it is possible to add a thermal spacer made of insulating material, between one of the walls and a support element, at the level of a contact surface.
[0008] However, the use of a thermal wedge implies a higher manufacturing cost and assembly time.
[0009] One of the aims of the invention is to provide a vehicle body that limits thermal conduction between the inside and outside of the body, with reduced manufacturing cost and assembly time.
[0010] To this end, the invention relates to a vehicle body, such as a railway vehicle, comprising:
[0011] - an outer wall and an inner wall, the outer and inner walls being arranged opposite each other,
[0012] - at least one support element made of thermally insulating material between the wall interior and exterior wall, at least one support element comprising a first surface, preferably flat, in contact with the exterior wall,
[0013] - of the first means of fixing at least one support element to the wall exterior, at the level of the first surface, and
[0014] - second means of fixing at least one support element with the inner wall.
[0015] Such a box makes it possible to limit thermal conduction between the inside and outside of the box by using at least one support element made of thermally insulating material. Furthermore, the manufacturing cost of such a support element is reduced compared to a box with aluminum support elements and a thermal spacer. Finally, the support element is a single piece, which facilitates its assembly and thus reduces assembly time.
[0016] Depending on other advantageous aspects, the casing comprises one or more of the following characteristics, according to all technically possible combinations:
[0017] - at least one support element is made of plastic material, such as polyamide 6.6;
[0018] - at least one support element is made of molded plastic material;
[0019] - the first means of attachment comprise at least one C-rail and at least one screw ;
[0020] - the case further includes a fixing wedge perpendicular to the wall in external and integral with the inner wall, the second means of fixing being capable of fixing at least one support element to the fixing wedge; and
[0021] - at least one support element comprises a second contact surface with the fixing wedge, the second surface being perpendicular to the first surface, the second means of fixing being capable of fixing at least one support element to the fixing wedge, at the level of the second surface.
[0022] The invention also relates to a vehicle, such as a railway vehicle, comprising a body as previously described.
[0023] Other aspects and advantages of the invention will become apparent from the following description, given solely by way of non-limiting example, and made with reference to the accompanying drawings in which:
[0024] - [Fig. 1] [Fig. 1] is a schematic representation of a cross-section of a ceiling of a box according to the invention, comprising in particular two support elements, and
[0025] - [Fig.2] [Fig.2] is a schematic representation of a support element of the [Fig.l].
[0026] Figure 1 shows a cross-section of a vehicle body 10. More specifically, it shows an upper part of the body 10, in particular a roof from box 10.
[0027] The vehicle is, for example, a railway vehicle.
[0028] The case 10 comprises an outer wall 20 and an inner wall 22, the outer wall 20 and inner wall 22 being arranged opposite each other.
[0029] The outer wall 20 and inner wall 22 extend along the entire length of the box 10.
[0030] The casing 10 comprises a floor, a roof, and side partitions. The roof and the partitions are formed in particular by the outer wall 20 and inner wall 22.
[0031] For example, at the level of the pavilion or a partition of the case 10, the outer wall 20 and inner wall 22 are substantially parallel.
[0032] The case 10 further comprises at least one support element 26 between the outer wall 20 and the inner wall 22, first means of fixing 30 of the at least one support element 26 with the outer wall 20, and second means of fixing 32 of the at least one support element 26 with the inner wall 22.
[0033] By way of example, on [Fig. 1] are shown two support elements 26 of the case 10 at the level of the pavilion of the case 10.
[0034] In addition or alternatively, not shown, the box 10 includes support elements 26 between the outer wall 20 and the inner wall 22 at another part of the box 10, for example at a side partition of the box 10.
[0035] According to the example of [Fig.1], the case 10 further includes, a fixing wedge 38 perpendicular to the inner wall 22 and integral with the inner wall 22.
[0036] The outer wall 20 defines, for example, the outer surface of the box 10. It is in contact with the outside atmosphere.
[0037] The inner wall 22 corresponds, for example, to an inner lining of the box 10. It delimits the internal volume of the box 10.
[0038] An insulation zone is located between the outer wall 20 and inner wall 22. It includes, for example, a thermal insulation material.
[0039] [Fig.2] represents a support element 26, such as those in [Fig.1].
[0040] The support element 26 has a first flat surface 40 in contact with the outer wall 20.
[0041] The support element 26 is made of thermally insulating material.
[0042] According to the example of [Fig.2], the support element 26 further comprises a second flat surface 42 for contact with the fixing wedge 38.
[0043] According to the example in [Fig.2], the second surface 42 is perpendicular to the first surface 40.
[0044] The first surface 40 is adapted to be placed in contact with the outer wall 20, the first surface 40 being placed directly against the outer wall 20. The second surface 42 is adapted to be placed in contact with the fixing wedge 38, the second surface 42 being placed directly against the fixing wedge 38.
[0045] According to the example of [Fig.2], the first surface 40 and respectively, the second surface 42 comprise at least a first fixing hole 46 adapted to accommodate the first fixing means 30, and respectively, at least a second fixing hole 48 adapted to accommodate the second fixing means 32.
[0046] For example, the support element 26 is made of plastic material, such as polyamide 6.6, also called PA6.6. Alternatively, the support element 26 is made of another thermally insulating material such as a composite material or cork.
[0047] Preferably, the support element 26 is made of molded plastic material.
[0048] The first fastening means 30 are suitable for fastening at least one element of support 26 to the outer wall 20, at the level of its first surface 40, more particularly at the level of the first fixing hole(s) 46 of its first surface 40.
[0049] According to the example in [Fig.1], the first fastening means 30 comprise at least one C-rail 50 and at least one screw 52. For example, the first fastening means 30 comprise, for each fastening hole 46, a C-rail 50 and a screw 52.
[0050] Each C-rail 50 is positioned opposite a fixing hole 46, and each screw 52 is designed to fit inside a fixing hole 46 and a C-rail 50.
[0051] The second fastening means 32 are suitable for fixing at least one support element 26 to the fastening wedge 38, at the level of its second surface 42, more particularly at the level of the second fastening orifice(s) 48 of its second surface 42.
[0052] The fixing wedge 38 is, for example, held securely to the inner wall 22 by means of other fixings. Alternatively, the fixing wedge 38 and the inner wall 38 are welded to each other.
[0053] In an alternative not shown, the crate 10 does not include a fixing wedge 38.
[0054] According to this variant, at least one support element 26 comprises a second flat surface in direct contact with the inner wall 22. The first surface 40 and the second surface then face each other.
[0055] For example, according to this variant, the first surface 40 and the second surface are substantially parallel.
[0056] According to this variant, the second surface is adapted to be placed in contact with the inner wall 22, the second surface being placed directly against the inner wall 22. The second fixing means 32 are then suitable for fixing at least one support element 26 to the inner wall 22, at the level of its second surface, more particularly at the level of one or more second fixing holes of its second surface.
[0057] It is then understood that the support element 26 makes it possible to fix the outer wall 20 and inner wall 22 opposite each other, limiting the thermal conduction between the outer wall 20 and inner wall 22, thanks to the use of a thermally insulating material.
[0058] In addition, the first and second surfaces 40 and 42 allow solid support respectively of the inner and outer walls 20 and 22 to at least one support element 26, and therefore a robust fixing.
[0059] Furthermore, the use of plastic material, such as PA6.6, gives the support elements 26 significant strength. Support elements 26 made with such a material also have the advantage of being lighter than conventional aluminum support elements.
[0060] Finally, such support elements 26 make it possible to do without the use of a thermal wedge, and therefore allows for a reduced manufacturing cost and assembly time.
Claims
Demands
1. Body (10) for a vehicle, such as a railway vehicle, comprising: - an outer wall (20) and an inner wall (22), the outer (20) and inner (22) walls being arranged opposite each other, - at least one support element (26) made of thermally insulating material between the inner wall (22) and the outer wall (20), the at least one support element (26) having a first surface (40), preferably flat, in contact with the outer wall (20), - first means of fixing (30) the at least one support element (26) with the outer wall (20), at the level of the first surface (40), and - second means of fixing (32) the at least one support element (26) with the inner wall (22);the casing (10) further comprising, a fixing wedge (38) perpendicular to the inner wall (22) and integral with the inner wall (22), the second fixing means (32) being capable of fixing at least one support element (26) to the fixing wedge (38), the at least one support element (26) comprising a second contact surface (42) with the fixing wedge (38), the second surface (42) being perpendicular to the first surface (40), the second fixing means (32) being capable of fixing at least one support element (26) to the fixing wedge (38), at the level of the second surface (42).
2. A case (10) according to claim 1, wherein at least one support element (26) is made of plastic material, such as polyamide
3. UU Box (10) according to claim 2, wherein at least one support element (26) is made of molded plastic material.
4. A case (10) according to any one of the preceding claims, wherein the first fastening means (30) comprise at least one C-rail (50) and at least one screw (52).
5. Vehicle, such as a railway vehicle, comprising a body (10), characterized in that the body (10) is according to any one of the preceding claims.