• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY Sandwich elements (10) comprising a first boundary layer (21) and a second boundary layer (22), and a spacer (23) of a lightweight material, preferably a foam material, between said boundary layer, the second boundary layer (22) comprising parallel to each other running stiffening elements (11) which each alone or together with a corresponding adjacent stiffening element (11) form a closed half-profile (24). Furthermore, the invention relates to a cargo floor designed as such a sandwich element and also to the fact that such a cargo floor forms part of a truck.
    公开号:SE1350656A1
    申请号:SE1350656
    申请日:2013-05-30
    公开日:2014-12-01
    发明作者:Anders Isaksson
    申请人:Ssab Technology Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The present invention relates to the field of sandwich elements which are provided with stiffening beams or profiles. Sandwich elements with such stiffeners are, among other things, lamped for cargo floors, for example in trucks, trailers and the like. The sandwich element is of the type which consists of a foamed core as a spacer material between a first surface and a second surface.
    Background of the invention Through EP 1457408, a floor for a cargo space in a vehicle, for example a truck or a trailer, is the former edge. This floor is formed with a horizontal lower support layer formed as a profiled plate forming parallel ribs which are flat on the upper side for the purpose of supporting an upper roof layer. This upper roof layer is formed of a pressed fibrous material or of a plastic material or of a metal plate arranged to abut flat against the profiled plate and thus form a floor with stiffening ribs.
    According to US 5,403,063, a floor for a vehicle is a former edge, which floor is formed by a double-walled board construction with fillers to increase strength and thermal insulation in the floor. The floor is further on its underside provided with beams to further increase the bending stiffness.
    OBJECT OF THE INVENTION The present invention aims to provide an improved sandwich element with the same good or improved properties and function in comparison with previously known sandwich elements, especially when these are used as load floors in vehicles. The load floors according to the invention achieve the corresponding buoy stiffness and strength but with reduced weight and simplified manufacturing process, which together gives improved load economy.
    SUMMARY OF THE INVENTION The present invention, as set forth in the independent claim, fulfills the above objects. Applicable embodiments of the invention are set out in the dependent claims. The invention relates to a sandwich element comprising a first delimiting layer and a second delimiting layer. Between these delimiting layers a spacer of a lightweight material is arranged. Preferably, the spacer core consists of a foam material. The second delimiting layer is bent to comprise stiffening elements running in parallel with each other, each of which alone or together with a corresponding adjacent stiffening element forms a closed half-profile. Thus, the half profile is integrated with the second delimiting layer, which in turn is part of the sandwich element. The fact that the half profile is closed has the advantage that spacer core material does not penetrate into the profile. The half profile can be closed by either being bent or roll-shaped to abut, riveted or welded along a contact line in the boundary layer. The half-profile of the stiffening element can also be formed by two uniform or matching parts of the second delimiting layer and thereby also the joint to the stiffening element is joined or folded together and held together by joining means by, for example, pressing action. Alternatively, a connection of the joining member to the stiffening element / stiffening element can be made with linen, tape, laser welding, etc.
    In embodiments of the invention, the half profile is formed with a reinforcing flap. This can consist of either an increased material thickness or be achieved through a reinforcing rail.
    According to an embodiment of the sandwich element, the second delimiting layer between two adjacent stiffening elements is formed as a curved surface. This embodiment absorbs loads in the element by introducing compressive stresses in the layer in the same way as in an arch to a bridge structure. In this case, the sandwich element can be made lighter for the same weight class.
    According to a further embodiment of sandwich elements, said curved surface is oriented to have its greatest distance from the first delimiting layer at the contact line in the second delimiting layer. This design distributes the compressive stresses down into the stiffening elements.
    In further embodiments of the invention, the stiffening element in a section perpendicular to its longitudinal direction has the shape of an isosceles triangle.
    In further embodiments of the invention, the stiffening element has in a section perpendicular to its longitudinal direction the front of an equilateral triangle. In further embodiments of the invention, the stiffening element has a flat side oriented parallel to the first delimiting layer.
    In other embodiments of the invention, the flat side of the stiffening element and parts of the adjacent sides of the stiffening element are reinforced by an increased wall thickness in relation to the other wall thickness of the second boundary layer or in relation to the other wall thickness of the stiffening element. This increased wall thickness can be located around all or around parts of or on selected stalls of the half profile.
    For these triangular stiffening elements, the increased wall thickness has been achieved by enclosing a reinforcing rail around the flat parallel side of the triangular shape. This embodiment is also advantageous in those embodiments where the stiffening elements are formed by two complementary parts which have been joined in the middle of the respective stiffening elements by holding the complementary parts together with each other.
    The invention also relates to a load floor designed as a sandwich element according to what has been described above. In such a load floor, the first boundary layer constitutes an upper wear layer of the load floor and the second boundary layer constitutes a lower layer of the sandwich element in the load floor. Such load floors can preferably be used in warehouses or the like.
    In an advantageous use of a cargo floor according to the invention, the cargo floor forms part of a truck. Such trucks can be trailers, vans, trucks and even heavier trucks.
    Brief Description of the Drawings The invention will now be described in more detail with the aid of exemplary embodiments with reference to the accompanying drawings, of which Figure 1 shows a perspective view of a load floor according to a first embodiment of the invention, Figure 2 shows the load floor according to Figure 1 in an exploded view. figure 3 shows the load floor according to figure 1 in a side view, figure 4 shows a section A - A according to figure 3, figure shows an enlargement according to figure 4, figure 6 shows a perspective view of a load floor according to a second embodiment of the invention, 4 shows the load floor according to figure 6 in an exploded view, shows the load floor according to figure 6 in a side view, shows a section B - B according to figure 8, shows an enlargement according to figure 9, shows a perspective view of a load floor according to a third embodiment of the invention, shows the load floor according to figure 11 in an exploded view, shows the cargo floor according to figure 11 in a side view, shows a section C - C according to figure 13, shows an enlargement according to figure 14. figure 7 figure 8 figure 9 figure Figure 11 Figure 12 Figure 13 Figure 14 Figure Description of the invention Figure 1 shows a first embodiment of a sandwich element 10, in the form of a disc, which sandwich element is provided with parallel stiffening elements 11 on one side thereof. In all the embodiments shown, the stiffening elements are coated on the underside of the sandwich element, which meant that the sandwich element can be used as a load floor.
    Figure 2 shows an exploded view of the sandwich element in figure 1 where the sandwich element 10 comprises a first delimiting layer 21 and a second delimiting layer 22, and a spacer 23 of a lightweight material, preferably a foam material, between said delimiting layer 21, 22. The spacer core in shape of a sheet material is glued to the [Dada boundary layers. The delimiting layers and the spacer core together form the sandwich element 10. The second delimiting layer 22 is in the embodiment shown formed by flat layer parts 221, 222, 223 each bent to comprise stiffening elements 241 running parallel to each other, each with a corresponding adjacent stiffening element 242 forming a half profile 24. The half profile 24 is pre-reinforced and held together by means of a reinforcing rail 25. The stiffening elements designed as half profiles thereby act as load-bearing beams which are integrated with the sandwich element.
    Figure 3 shows the sandwich element 10 in a side view with a longitudinal stiffening element 241 and corresponding reinforcing rail 25.
    Figure 4 shows a section through the sandwich element 10 with the first delimiting layer 21, the second delimiting layer 22, the spacer core 23 and the half profile 24.
    Figure 5 shows in magnification the first boundary layer 21 the second boundary layer 22, the spacer core 23 and the half profile 24. The half profile 24 is formed by the flat layer parts 222, 223 which are each bent along at least one side to a part as in the shown the embodiment constitutes half of the half profile. The half-profile is closed along a contact line 51 in the second delimiting layer 22. Furthermore, the flat layer parts 222, 223 abut against each other along a joint line 52 in the half-profile 24 in the embodiment shown. Furthermore, the planar layer portions 222, 223 are bent together to form an isosceles triangle with the legs 53, 54 and with its tip coinciding with the contact line 51. The base 55 of the triangle is oriented parallel to the second boundary layer 22 which in this embodiment is planar than the half-profiles 24. The figure also shows the reinforcing rail 25 which is provided with two shanks 56, 57 which abut against the triangular legs 53, 54. The reinforcing rail constitutes both a true attachment detail for the lowered layer parts 222, 223 and a reinforcing detail for the half profile 24. The flat side of the stiffening element corresponding to a part of the base 55 and parts of the adjacent sides 53, 54 of the stiffening element is thus reinforced by an increased wall thickness in relation to the other wall thickness of the second boundary layer 22 or in relation to other wall thickness of the stiffening element 241. 53, 54. According to the embodiment shown in Figure 5, the corresponding the triangle shape on the half-profile 24 also has an equilateral triangle. The spacer core 23 according to this embodiment can either be injected between the two boundary layers 21, 22 or on the boundary sheet 22 or alternatively laid in / on as finished disk elements.
    Figure 6 shows a second embodiment of a sandwich element 10 according to the invention. This embodiment is also provided with parallel stiffening elements 11 on one side thereof.
    Figure 7 shows in an exploded view the embodiment according to Figure 6 where the sandwich element comprises a first delimiting layer 21 and a second delimiting layer 22, and a spacer 23 of a lightweight material, preferably a foam material, called the delimiting layer 21, 22. The spacer core in the form of a disc material can also in this embodiment be glued to the! Dada boundary layers. The delimiting layers and the spacer core together form the sandwich element 10. In the embodiment shown, the second delimiting layer 22 is formed by a completely flat metal plate of constant thickness which has been rolled to include the parallel stiffening elements 11. As can be seen from the figure, the usual stiffening element 11 forms a half profile 24. after roll forming, the metal plate has obtained a curved shape between each stiffening element. Thus, the second boundary layer between two adjacent stiffening elements is formed as a curved surface. The curvature is designed so that the spacer core has its greatest thickness in the middle of the stiffening elements. By forming the second boundary layer 22 on this set, a lighter construction is obtained while maintaining the hall strength.
    Figure 8 shows the sandwich element 10 in a side view with a longitudinal stiffening element 11 and on one side of the sandwich element.
    Figure 9 shows a section through the sandwich element 10 with the first delimiting layer 21, the second delimiting layer 22, the spacer core 23 and the half-profiles 24.
    Figure 10 shows on an enlarged scale the first boundary layer 21, the second boundary layer 22, the spacer core 23 and the half profile 24. The half profile 24 is formed by a flat metal disc which is bent by, for example, roll forming into the complete second boundary layer 22 as previously indicated. In the embodiment shown, the half-profile 24 thus forms an integral part of the second delimiting layer 22 and thus has the same material thickness as the second delimiting layer 22 in general. The half-profile 24 is also in this embodiment closed along a contact line 51 in the second boundary layer 22. The half-profile also in this embodiment forms an isosceles triangle with the legs 53, 54 and with its tip coinciding with the contact line 51. The base 55 of the triangle is oriented parallel to the the second boundary layer 22. According to the embodiment shown in Figure 10, the triangle shape on the half-profile 24 also corresponds to an equilateral triangle.
    Figure 11 shows a third embodiment of a sandwich element 10 according to the invention. This embodiment is also provided with parallel stiffening elements 11 on one side thereof.
    Figure 12 shows a corresponding exploded view of the embodiment according to Figure 11 constructed in the same way as already shown in Figure 7 and showing the sandwich element with the first boundary layer 21, the second boundary layer 22, true the spacer core 23 between the boundary layers 21, 22. As previously described in Figs. This sandwich element also comprises the parallel stiffening elements 11. As can be seen from the figure, the usual stiffening element 11 forms a half profile 24. Also in this embodiment the second delimiting kit 22 after roll-forming has obtained a curved shape between each stiffening element 11. Thus the second delimiting layer is between two adjacent stiffening element shaped like a curved surface. The hook is designed so that the spacer core has its greatest thickness in the middle of the stiffening elements. By forming the second boundary layer 22 on this set, a lighter construction is obtained while maintaining the hall strength.
    Figure 13 shows the sandwich element 10 in a side view with a longitudinal stiffening element 11 and on one side of the sandwich element.
    Figure 14 shows a section through the sandwich element 10 with the first delimiting layer 21, the second delimiting layer 22, the spacer core 23 and the half-profiles 24.
    Figure 15 shows a corresponding section of the third embodiment shown in Figure 10 for the second embodiment. The figure shows the first delimiting layer 21, the second delimiting layer 22, the spacer core 23 and a half profile 24. In this embodiment the half profile is oriented relative to the second delimiting layer in the same way as in the previously shown embodiments, i.e. the half profile has a flat side 55 which is substantially parallel to the second boundary layer 22 and parallel to the first boundary layer 21. The half profile 24 is provided with a reinforcement 150 along the parallel side 55 and up to half the sides 53, 54 connecting to the parallel side 55. The reinforcement 150 is designed as an increase in the wall thickness to approximately double in relation to Other wall thickness for the second boundary layer. Further embodiments are conceivable where the entire half profile 24 has such an increased wall thickness. The figure also shows that the half-profile 24 is also in this embodiment closed along a contact line 51 in the second delimiting layer 22.
    Advantageous uses of the sandwich element are like a load floor in a truck where the second boundary layer corresponds to a lower layer in the form of a structural disc with built-in load carriers in the form of longitudinal beams which correspond to the half-profiles. Each beam is formed together with the disc and where the disc between the beams is slightly convex. Thus, this layer part in the construction is made of an originally flat plate. The grooves on the roll-shaped beams do not have to be triangular as shown in the design examples but can have 8 rectangular or round / oval cross-sections. Furthermore, the spacer core of an intermediate layer (s) corresponds to a lightweight material, e.g. a foam material for distance and steaming. This material can also act as an adhesive to the lower and an upper layer. The first boundary layer corresponds to an upper layer in the form of a structurally flat metal plate which is intended to form a wear surface in the floor of the truck.
    The total mat of the sandwich construction is about 40 mm, of which the upper layer is 0.5-0.6 mm; the adjacent layer is approx. 5 mm and the lower layer without the beams is 0.8-1.0 mm. 9
    权利要求:
    Claims (1)
    [1]
    1. 223
    类似技术:
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    同族专利:
    公开号 | 公开日
    SE537683C2|2015-09-29|
    US20160129947A1|2016-05-12|
    AU2014271388A1|2015-12-17|
    PL3003836T3|2018-10-31|
    EP3003836B1|2018-05-23|
    CN105339246A|2016-02-17|
    CN105339246B|2018-03-02|
    EA032618B1|2019-06-28|
    AU2014271388B2|2017-05-25|
    EA201592280A1|2016-05-31|
    ES2676727T3|2018-07-24|
    WO2014193301A1|2014-12-04|
    EP3003836A1|2016-04-13|
    US10279848B2|2019-05-07|
    BR112015030089A2|2017-07-25|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350656A|SE537683C2|2013-05-30|2013-05-30|Sandwich elements and cargo floors designed as such|SE1350656A| SE537683C2|2013-05-30|2013-05-30|Sandwich elements and cargo floors designed as such|
    EA201592280A| EA032618B1|2013-05-30|2014-05-28|Sandwich element, use of a sandwich element|
    EP14735695.0A| EP3003836B1|2013-05-30|2014-05-28|Sandwich element and a load floor made as such an element|
    US14/894,846| US10279848B2|2013-05-30|2014-05-28|Sandwich element and a load floor made as such an element|
    BR112015030089A| BR112015030089A2|2013-05-30|2014-05-28|sandwich element and a loading floor made of such an element|
    ES14735695.0T| ES2676727T3|2013-05-30|2014-05-28|Sandwich element and a loading floor made as such element|
    PL14735695T| PL3003836T3|2013-05-30|2014-05-28|Sandwich element and a load floor made as such an element|
    AU2014271388A| AU2014271388B2|2013-05-30|2014-05-28|Sandwich element and a load floor made as such an element|
    PCT/SE2014/050658| WO2014193301A1|2013-05-30|2014-05-28|Sandwich element and a load floor made as such an element|
    CN201480036416.7A| CN105339246B|2013-05-30|2014-05-28|Sandwich element and the load carrying floor for making this element|
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