Utility vehicle cab for a utility vehicle, and utility vehicle having such a utility vehicle cab

Abstract

The invention relates to a utility vehicle cab (1) for a utility vehicle (3), wherein the utility vehicle cab (1) encloses an interior (11) and has a floor region (9), the utility vehicle cab (1) has at least one functional element (7) which is provided in the floor region (9), and the functional element (7) has a vacuum insulation element (13) and a shaped element (15) which is selected from the group consisting of: a foam element, a filament braid element, and a combination of two of the aforementioned shaped elements, the vacuum insulation element (13) being covered by the shaped element (15). The invention also relates to a utility vehicle (3) having such a utility vehicle cab (1).

Description

[0001] Commercial vehicle cab for a commercial vehicle and commercial vehicle with such a

[0002] commercial vehicle cab

[0003] The invention relates to a commercial vehicle cabin for a commercial vehicle and a commercial vehicle with such a commercial vehicle cabin.

[0004] Commercial vehicles typically have a cab positioned relatively high above the road. This can mean that the road ahead and to the sides of the vehicle are not fully visible to the person inside the cab. This can lead to serious accidents involving pedestrians and cyclists. Therefore, there are efforts to lower commercial vehicle cabs so that the occupant can see a larger area of ​​the road. However, a lowered cab makes it more difficult to dissipate the heat generated by the engine, which is usually located below the cab, because there is less space between the engine and the cab for cooling airflow.Due to the limited installation space, it is also more difficult to adequately insulate the floor area, particularly the lower cabin wall and especially the cabin floor, of the commercial vehicle cabin against the heat generated by the drive system. This can lead to the floor area becoming so hot that it is uncomfortable for the person inside the commercial vehicle cabin.

[0005] The invention is therefore based on the objective of creating a commercial vehicle cabin for a commercial vehicle and a commercial vehicle with such a commercial vehicle cabin, whereby the aforementioned disadvantages are reduced, preferably do not occur.

[0006] The problem is solved by providing the present technical teaching, in particular the teaching of the independent claims and the preferred embodiments disclosed in the dependent claims and the description. The problem is solved in particular by providing a commercial vehicle cabin for a commercial vehicle, wherein the commercial vehicle cabin includes an interior space and has a floor area. The commercial vehicle cabin further comprises at least one functional element arranged in the floor area. The functional element comprises a vacuum insulation element and a shaped element selected from the group consisting of: a foam element, a filament braid element, and a combination of any two of the aforementioned shaped elements. The vacuum insulation element is, in particular, completely covered by the shaped element.In particular, the vacuum insulation element is in contact with the form element at least on one side, and in particular on at least three sides.

[0007] Advantageously, the floor area of ​​the commercial vehicle cab can be sufficiently thermally insulated against the heat generated by the vehicle's drive system by means of the functional element, which incorporates the vacuum insulation element, when the cab is properly installed on the vehicle. In particular, excessive heating of the floor area is prevented, ensuring a comfortable temperature for the occupant. This advantageously reduces, and preferably eliminates, discomfort for the occupant. Furthermore, due to the comparatively very low thermal conductivity of the vacuum insulation element, the functional element can be designed to be particularly compact, thus requiring relatively little installation space within the cab. Specifically, the functional element is located within the interior of the cab.

[0008] In the context of this technical teaching, "top" is understood to mean, in particular, geodetically top. Thus, a "top side" is understood to be a geodetic top surface, especially a side facing geodetically upwards. Conversely, "bottom" is understood to mean, in particular, geodetically bottom, and a "bottom side" is understood to be a geodetic underside, especially a side facing geodetically downwards. Specifically, spatial direction specifications refer to a commercial vehicle cabin installed as intended in a commercial vehicle.

[0009] In the context of this technical teaching, a foam element is understood to be, in particular, an artificially produced element made of a foamed material, extending in three spatial directions. The foamed material has a cellular, or more specifically, a multicellular structure with a multitude of adjacent cells. The cells are hollow and, in particular, filled with a gas, especially air. The foam element has, in particular, a comparatively low density. The foam element is, in particular, elastic and can therefore be compressed and expanded again, especially within predetermined, material-dependent limits.

[0010] In the context of this technical teaching, a filament braid element is understood to be, in particular, an element extending in three spatial directions, made of artificial filaments, wherein the filaments are interconnected to form a braid. For this purpose, the braid is produced, in particular, by a melt extrusion process, wherein the extruded filaments are subsequently cooled, in particular by means of a gas, especially air, or a fluid, especially water. Thus, a braid is formed, in particular, from a multitude of interwoven filaments, wherein the braid is elastic, such that it can be compressed and expanded again, in particular within predetermined material-dependent limits.

[0011] In the context of this technical teaching, a vacuum insulating element is understood to be, in particular, an element extending in three spatial directions with a gas-tight shell, wherein the gas-tight shell is evacuated such that a very low absolute pressure, in particular of a few millibars, prevails within the gas-tight shell. Specifically, a vacuum exists within the shell. To prevent the gas-tight shell from collapsing due to the pressure difference between an inner and an outer surface, at least one support element is arranged within the gas-tight shell to stabilize it. The support element is, in particular, arranged between two opposite shell surfaces and ensures a predetermined distance between the two surfaces. Such vacuum insulating elements are also known, in particular, as vacuum insulated panels (VIPs).A vacuum insulation panel can reduce the heat transfer caused by the gas molecules in the air, resulting in particularly efficient thermal insulation.

[0012] In one embodiment, the support element is designed as a porous, open-cell core material. This open-cell core material acts as a support core, preventing the gas-tight shell from collapsing due to the pressure difference between the inner and outer surfaces. In another embodiment, the support element is designed as a plurality of support pillars, each connected to the two opposing shell sides and spaced apart from them. In one embodiment, the functional element is placed on the lower wall, particularly the floor, of the commercial vehicle cabin. In another embodiment, the functional element is detachably connected to the lower wall, particularly the floor, in a non-destructive manner, specifically by means of a hook-and-loop fastener and / or a screw connection.In yet another embodiment, the functional element is connected to the cabin underside, in particular to the cabin floor, especially by gluing and / or riveting. It is also possible to combine at least two of the aforementioned connection methods. In this context, "non-destructive" means without damaging and / or destroying the functional element and / or the cabin underside.

[0013] In one embodiment, the cabin lower wall, in particular the cabin floor, is formed from a sheet metal component, in particular a sheet steel component.

[0014] In one embodiment, the form element faces the interior. In particular, the vacuum insulation element faces away from the interior and especially towards the lower wall of the cabin, particularly the cabin floor.

[0015] In one embodiment, the functional element comprises a plurality of vacuum insulation elements covered by the same form element. In particular, the vacuum insulation elements are spaced apart from one another.

[0016] In one embodiment, the vacuum insulation element has a longitudinal extension and a transverse extension oriented perpendicular to the longitudinal extension. In particular, the vacuum insulation element has a lower, and especially a significantly lower, vertical extension compared to the longitudinal and transverse extensions. In particular, the vacuum insulation element is plate-shaped, especially as a single plate. In particular, the plate is rigid or elastic. In particular, an element plane of the vacuum insulation element, having the longitudinal and transverse extensions, is arranged almost parallel, in particular parallel, to the floor area, especially to the lower wall of the cabin, especially to the cabin floor. In particular, alternatively or additionally, the functional element is arranged almost parallel, in particular parallel, to the floor area, especially to the lower wall of the cabin, especially to the cabin floor.In one embodiment, the vacuum insulation element is a vacuum insulation element with the model designation va-Q-steel, va-Q-pro or va-Q-pro M5 of the company va-Q-tec AG from Würzburg in the configuration available on the date relevant for the priority date of the present intellectual property right.

[0017] In one embodiment, the vacuum insulation element has a thermal conductivity A of at most 0.01 W / (m*K), in particular at most 0.007 W / (m*K), in particular at most 0.0065 W / (m*K), in particular at most 0.0045 W / (m*K), in particular at most 0.004 W / (m*K). In particular, the thermal conductivity A is determined by means of a measurement method in accordance with DIN EN 12667 in the version available on the date relevant for the priority date of this patent.

[0018] In one embodiment, the functional element is multilayered, wherein the vacuum insulation element is formed as a vacuum insulation layer and the shaped element as a shaped element layer. In particular, the shaped element layer faces the interior. In particular, the vacuum insulation layer faces away from the interior and especially towards the lower wall of the cabin, particularly the cabin floor.

[0019] According to a further development of the invention, the functional element has a protective layer on its upper surface facing the interior. In particular, the protective layer is designed as a wear-resistant layer, specifically configured to prevent damage to the element. Specifically, the protective layer is a layer visible in the interior of the commercial vehicle cabin, and in particular, it has a visible surface. Specifically, the protective layer is a walking surface upon which a person in the commercial vehicle cabin steps.

[0020] In one embodiment – ​​where the functional element is multilayered – the protective layer is a further layer in addition to the vacuum insulation layer and the form element layer. In particular, the form element layer is then an intermediate layer between the vacuum insulation layer and the protective layer.

[0021] In one embodiment, the protective layer is sprayed onto the molded element.

[0022] According to a further development of the invention, the protective layer is permanently bonded to the molded element. Advantageously, this allows for particularly good wear protection, thus significantly minimizing, and in particular completely preventing, the risk of damage to the molded element.

[0023] In the context of this technical teaching, "permanently attached" means, in particular, that the protective layer cannot be detached, removed, or taken off the molded element without causing damage. "Non-destructive" in this context means without damaging or destroying the protective layer and / or the molded element.

[0024] According to a further development of the invention, the shaped element and the protective layer are designed to form an acoustic damping element. Advantageously, the acoustic damping element particularly dampens comparatively low frequencies of a drive device, so that the person in the commercial vehicle cabin experiences pleasant sound insulation.

[0025] In one embodiment, the acoustic damping element is designed as a spring-damper-mass system, wherein the molded element acts as a spring-damper and the protective layer as a mass. In particular, the acoustic damping element is designed to dampen the operating noise of a drive unit of a commercial vehicle when the commercial vehicle cabin is attached to the vehicle as intended, especially when mounted on it.

[0026] According to a further development of the invention, the foam element comprises or is formed from a material selected from the group consisting of: a plastic, a polyurethane (PU) plastic, a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactic acid plastic, a thermoset plastic, a rubber, a silicone plastic, a thermoplastic polyurethane (TPU) plastic, and a combination of at least two of the aforementioned materials. Advantageously, due to these materials, the geometric shape of the foam element can be adapted particularly flexibly to unevenness in the floor area, especially the lower wall of the cabin, and particularly the cabin floor.

[0027] Alternatively or additionally, the protective layer is provided for to comprise or be formed from a material selected from the group consisting of: a rubber, an ethylene propylene diene monomer (EPDM) rubber, a thermoplastic polymer, a thermoplastic polyolefin (TPO), and a combination of at least two of the aforementioned materials. Advantageously, the protective layer comprises or is formed from a particularly recyclable material.

[0028] Alternatively or additionally, it is provided that the filament braid element comprises or is formed from a material selected from a group consisting of: a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactide plastic, a thermoplastic polyurethane plastic and a combination of at least two of the aforementioned materials.

[0029] According to a further development of the invention, the form element has a, in particular closed, vacuum insulation element receiving chamber in which the vacuum insulation element is arranged, in particular completely enclosed. This advantageously represents a particularly simple embodiment of the functional element, while at the same time the vacuum insulation element can be particularly well protected against damage.

[0030] In particular, the vacuum insulation element is completely surrounded by the molded element, especially when the foam element is chosen as the molded element. In particular, the molded element compensates for any unevenness in the floor area, especially of the cabin floor, of the commercial vehicle cabin. In particular, the molded element is placed, and in particular completely, on the cabin floor, and thus rests directly and completely against it.

[0031] Alternatively or additionally, the molded part is provided to have a vacuum insulation element recess located on the underside of the molded part and open at least downwards, in particular such that the vacuum insulation element can be inserted into and removed from the vacuum insulation element recess with particular ease. Specifically, the vacuum insulation element rests against the molded part on its underside.

[0032] In one embodiment, the vacuum insulation element is partially, and in particular not completely, surrounded by the molded element, especially when the foam element is selected as the molded element. In particular, the vacuum insulation element is free of the molded element on its underside, i.e., it is not surrounded by the molded element on its underside, especially when the foam element is selected as the molded element. In particular, the molded element only partially, and in particular not completely, rests directly against the lower wall of the cabin, especially the cabin floor, and is only partially, and in particular not completely, placed directly on the lower wall of the cabin, especially the cabin floor.

[0033] In one embodiment, the vacuum insulation element is arranged between the cabin's lower wall, in particular the cabin floor, and the molded element.

[0034] It is possible, if the form element covers at least two vacuum insulation elements, that a first vacuum insulation element of the two vacuum insulation elements is arranged in a vacuum insulation element receiving space, wherein a second vacuum insulation element of the two vacuum insulation elements is arranged in a vacuum insulation element recess.

[0035] According to a further development of the invention, the vacuum insulation element is detachably arranged on the molded element. Advantageously, the vacuum insulation element is not connected to the molded element, but merely rests against it, so that the vacuum insulation element can be inserted into and removed from the vacuum insulation element recess, and in particular, replaced, with particular ease.

[0036] According to a further development of the invention, the mold element has a temperature control element recess, in particular open at the top, in which a temperature control element, in particular controllable, is arranged.

[0037] In one embodiment, the temperature control element, which can be controlled in particular, is set up to regulate the temperature of the interior of the commercial vehicle cabin, in particular to heat it.

[0038] In one embodiment, the temperature control element is covered, particularly directly, by the protective layer. In particular, the temperature control element is arranged between the molded part and the protective layer. In another embodiment, the controllable temperature control element comprises a plurality of carbon fibers by means of which the interior can be tempered, in particular heated.

[0039] The problem is also solved by creating a commercial vehicle with a commercial vehicle cabin according to the invention or a commercial vehicle cabin according to one or more of the previously described embodiments and a drive device. The functional element of the commercial vehicle cabin is designed to thermally insulate the interior of the commercial vehicle cabin against waste heat from the drive device and / or to acoustically dampen it against operating noise from the drive device. In connection with the commercial vehicle, the advantages that have already been explained in connection with the commercial vehicle cabin are particularly evident.

[0040] The invention will be explained in more detail below with reference to the drawing. The drawing shows:

[0041] Fig. 1 shows a schematic representation of an exemplary embodiment of a commercial vehicle cabin for a commercial vehicle,

[0042] Fig. 2 shows a schematic representation of a functional element of a first embodiment of a commercial vehicle cabin,

[0043] Fig. 3 shows a schematic representation of a functional element of a second embodiment of a commercial vehicle cabin, and

[0044] Fig. 4 shows a schematic representation of a functional element of a third embodiment of a commercial vehicle cabin.

[0045] Figure 1 shows a schematic representation of an embodiment of a commercial vehicle cabin 1 for a commercial vehicle 3 not shown.

[0046] A top view shows a cabin floor 5, in particular a cabin base, of the commercial vehicle cabin 1. The commercial vehicle cabin 1 has a plurality of functional elements 7, which are arranged in a floor area 9 of the commercial vehicle cabin 1 and are placed on the floor area 9, in particular on the cabin floor 5, and in particular are additionally connected to it. Projecting out of the plane of the image is an interior space 11, in particular a driver's compartment, which is enclosed by the commercial vehicle cabin 1. Also shown is a section line AA of a section through one of the functional elements 7, with a sectional view of the section shown in Figure 2.

[0047] Figure 2 shows a schematic sectional view of a functional element 7 of a first embodiment of a commercial vehicle cab 1. The functional element 7 is, for example, of the commercial vehicle cab 1 according to Figure 1, where the sectional view represents the section along section line AA from Figure 1.

[0048] In this context, identical and functionally equivalent elements in all figures are provided with the same reference symbols, so that reference is made to the preceding description in each case.

[0049] The functional element 7 is placed on the cabin lower wall 5, in particular on the cabin floor, and in particular is additionally connected to it. The functional element 7 comprises a vacuum insulation element 13 and a molded element 15 designed as a foam element. The vacuum insulation element 13 is, in particular, completely covered by the molded element 15. The vacuum insulation element 13 rests against the molded element 15 on at least three sides 17. In this case, the molded element 15 faces the interior space 11 – in Figure 2 above the functional element 7. In particular, the vacuum insulation element 13 faces away from the interior space 11 and towards the cabin lower wall 5. In this case, the molded element 15 is partially placed directly on the cabin lower wall 5, in particular on the cabin floor, and thus rests directly against it in certain areas.

[0050] The functional element 7 has a protective layer 21 on its upper surface 19 facing the interior 11. In particular, the protective layer 21 is designed as a wear-resistant layer, specifically to prevent damage to the molded element 15. The protective layer 21 is permanently bonded to the molded element 15. In this case, the molded element 15 and the protective layer 21 form an acoustic damping element 23. The acoustic damping element 23 is designed as a spring-damper-mass system 24, shown schematically in dashed lines, wherein the molded element 15 acts as a spring-damper and the protective layer 21 as a mass.

[0051] The molded element 15, designed as a foam element, is in this case made of polyurethane (PU) plastic. In an embodiment not shown, the molded element 15 comprises a different material or is made of a different material selected from the group consisting of: a plastic, a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactic acid plastic, a thermoset plastic, a rubber, a silicone plastic, a thermoplastic polyurethane (TPU) plastic and a combination of at least two of the aforementioned materials.The protective layer 21 comprises or is formed from a material selected from a group consisting of: a rubber, an ethylene propylene diene rubber (EPDM), a thermoplastic polymer, a thermoplastic polyolefin (TPO) and a combination of at least two of the aforementioned materials.

[0052] The mold element 15 has a vacuum insulation element recess 25, which is arranged on a bottom side 27 of the mold element 15 and is open at least downwards, in particular such that the vacuum insulation element 13 can be inserted into and removed from the vacuum insulation element recess 25.

[0053] The vacuum insulation element 13 is partially surrounded by the molded element 15, in particular by the molded element 15, which is designed as a foam element. Specifically, the vacuum insulation element 13 is free of the molded element 15 on its underside 27; that is, it is not surrounded by the molded element 15 on its underside 27, and in particular by the molded element 15, which is designed as a foam element. Specifically, the molded element 15 rests directly against the lower wall 5 of the cabin, in particular the cabin floor, and is placed directly on the lower wall 5 of the cabin, in particular on the cabin floor. In this case, the vacuum insulation element 13 is arranged between the lower wall 5 of the cabin, in particular the cabin floor, and the molded element 15.

[0054] Figure 3 shows a schematic representation of a functional element 7 of a second embodiment of a commercial vehicle cabin 1.

[0055] The functional element 7 of Figure 3 is based on the functional element 7 of Figure 2, wherein the molded element 15 additionally has a temperature control element recess 29, which is open, in particular, at its upper surface 19. A temperature control element 31, which is particularly controllable, is arranged in the temperature control element recess 29. The temperature control element 31 is designed to regulate the temperature, and in particular to heat, the interior 11 of the commercial vehicle cabin 1. The temperature control element 31 is covered, in particular directly, by the protective layer 21 and is arranged between the molded element 15 and the protective layer 21. In Figure 3, the molded element 15—in contrast to the molded element 15 of Figure 2—is made of a thermoplastic polyurethane (TPU) material.

[0056] In an embodiment not shown, the form element 15 is designed as a filament braid element, wherein the filament braid element comprises or is formed from a material selected from a group consisting of: a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactide plastic, a thermoplastic polyurethane plastic and a combination of at least two of the aforementioned materials.

[0057] Figure 4 shows a schematic representation of a functional element 7 of a third embodiment of a commercial vehicle cabin 1.

[0058] In contrast to the first and second embodiments, the form element 15 here has a particularly enclosed vacuum insulation element receiving chamber 26 in which the vacuum insulation element 13 is arranged, in particular completely enclosed.

[0059] The vacuum insulation element 13 is completely surrounded by the molded element 15 and, in particular, if the molded element 15 is a foam element, is completely encased in foam. The molded element 15 compensates for any unevenness in the floor area, especially of the lower wall 5, and in particular of the floor, of the commercial vehicle cabin 1. The molded element 15 is placed, and in particular completely, on the lower wall 5, and in particular on the floor, and thus rests directly and completely against it.

[0060] Even with a fully enclosed vacuum insulation element 13, the forming element 15 can optionally have the temperature control element recess 29 in which the temperature control element 31, which can be controlled in particular, is arranged. Reference numeral list

[0061] commercial vehicle cab

[0062] commercial vehicle

[0063] Cabin floor

[0064] Functional element

[0065] floor area

[0066] interior

[0067] vacuum insulation element

[0068] Form element

[0069] pages

[0070] Top

[0071] Protective layer acoustic insulation element

[0072] Spring-damper-mass system

[0073] Vacuum insulation element recess

[0074] Vacuum insulation element receiving chamber

[0075] bottom

[0076] Temperature control element recess

[0077] Temperature control element

Claims

Patent claims 1. Commercial vehicle cabin (1) for a commercial vehicle (3), wherein - the commercial vehicle cab (1) includes an interior (11) and has a floor area (9), wherein - the commercial vehicle cab (1) has at least one functional element (7) which is arranged in the floor area (9), wherein - the functional element (7) comprises a vacuum insulation element (13) and a shaped element (15) selected from a group consisting of: a foam element, a filament braid element and a combination of any two of the aforementioned shaped elements, wherein - the vacuum insulation element (13) is covered by the form element (15).

2. Commercial vehicle cabin (1) according to claim 1 , wherein - the functional element (7) has a protective layer (21) on a top surface (19) facing the interior (11).

3. Commercial vehicle cabin (1) according to claim 2, wherein - the protective layer (21) is permanently bonded to the form element (15).

4. Commercial vehicle cabin (1) according to claim 2 or 3, wherein - the shaped element (15) and the protective layer (21) form an acoustic damping element (23).

5. Commercial vehicle cabin (1) according to one of the preceding claims, wherein - the molded element (15) comprises a material or is formed from a material selected from the group consisting of: a plastic, a polyurethane (PU) plastic, a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactic acid plastic, a thermoset plastic plastic, a rubber, a silicone plastic, a thermoplastic polyurethane (TPU) plastic and a combination of at least two of the aforementioned materials, and / or wherein - the protective layer (21) comprises or is formed from a material selected from the group consisting of: a rubber, an ethylene propylene diene monomer rubber (EPDM), a thermoplastic polymer, a thermoplastic polyolefin (TPO) and a combination of at least two of the aforementioned materials, and / or wherein - the filament braid element comprises or is formed from a material selected from a group consisting of: a polyethylene plastic, a polypropylene plastic, a polystyrene plastic, a polyamide plastic, a polyethylene terephthalate plastic, a polylactide plastic, a thermoplastic polyurethane plastic and a combination of at least two of the aforementioned materials.

6. Commercial vehicle cabin (1) according to one of the preceding claims, wherein - the form element (15) has a vacuum insulation element receiving space (26) in which the vacuum insulation element (13) is arranged, and / or wherein - the form element (15) has a vacuum insulation element recess (25) which is arranged on a bottom side (27) of the form element (15) and is open at least downwards.

7. Commercial vehicle cabin (1) according to one of the preceding claims, wherein - the vacuum insulation element (13) is detachably arranged on the form element (15).

8. Commercial vehicle cabin (1) according to one of the preceding claims, wherein - the mold element (15) has a tempering element recess (29) in which a tempering element (31) is arranged.

9. Commercial vehicle (3) with a commercial vehicle cabin (1) according to one of the preceding claims and a drive device, wherein - the functional element (7) of the commercial vehicle cabin (1) is designed to protect the interior (11) of the commercial vehicle cabin (1) from waste heat from the To thermally insulate the drive device and / or to acoustically dampen it against operating noise from the drive device.

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