FI117794B - Floor construction for a cargo space in a vehicle - Google Patents

Description

'.ίί 117794

Vehicle load compartment floor structure "

Golvkonstruktion för et chiptrromme i ett fordon '5

The present invention relates to a floor structure for a vehicle load compartment.

Floor structures of the vehicle load compartments 10, which are formed of a heat insulating polyurethane cellular structure, are known in the art. The known cargo space structures are generally formed of a single honeycomb blank.

Prior art floor structures have the same strength throughout its length.

Thus, the front of the floor structure will have the same strength and stiffness as the middle and rear of the structure. The floor structure is thus uniform but economically unfavorable.

: This application discloses a new type of vehicle load floor • * · *: structure. The load-insulating floor is made of cellular plastic chemistry * · •; *. 20 so that the core of the floor is modularly made of at least three different types

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a structural component or module body; middle / middle pieces of structure ···; the back of the structure and the back of the structure.

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Preferably, the middle portion of the floor structure is formed of center pieces, each of which has a basis weight of less than that of the back or front of the structure.

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The problem with prior art solutions when loading the cargo space is that the rear of the • • · · · ♦, the back of the floor is subjected to greater stress than the other parts of the cargo floor • · · · · · the load to be dropped / driven to the rear is ♦ t • · first. For the purposes of this application, the term "rear" means that part of the vehicle which, when viewed in the forward direction, is rearward of the vehicle. The application discloses a solution in which the floor structure of the cargo compartment is stronger in strength than the rest of its back. The floor structure of the load compartment rear and front member should comprise anchorage points, since the attachment of the structure to the vehicle frame beams takes place e.g. front and rear of the floor structure. Accordingly, the front and rear members of the floor structure are further provided with fasteners for the floor structure, which receive fastening screws from the vehicle frame to its frame members.

The middle region of the floor structure consists of a center piece (s) comprising cellular plastic cells separated by baffles, which are preferably plywood panels and extend perpendicular to the floor longitudinal direction and the longitudinal direction Xi of the vehicle. Thus, the center piece (s) of the core structure of the floor structure consist essentially of a simple cellular plastic baffle cell. The front and back members of the lat-15 structure also include foam cells and, in addition, the structure-stiffening beam (s), which may be formed, for example, in cross-section of spruce-aluminum-board-plywood. In addition, there may be a separate * · plate which serves as a fastening part for securing the floor structure and further the cargo area structure •:: .1 ·· to the vehicle frame beams. The mounting on the vehicle body can: 20 be done by securing the fixing screws to the cross members. Preferably • »« * .. 1 is fastened to the load compartment of the vehicle from the floor structure to the vehicle beams • · • · φ ** 1: with screws or bolts.

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Thus, according to the invention, the core part of the floor structure comprises a central piece 10a, a back piece 10a2 and a front piece 10a3. The floor structure * · “1 is modularly constructed with the center piece (s) • · · * · 1 .1 attached to the back and the front of the floor structure. In the core formed by the slab floor structure, the middle module body 100 has a basis weight (kg / m) substantially lower than the back body (10a2) or 30 front body (10aj).

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The core part 100 of the structure is formed of modular pieces consisting of the aforementioned parts. Each module unit, or module unit, is available from stock and can be factory-outsourced. The assembly step itself, tapah-5, comes at the factory by cutting or sawing modular units, or module pieces, of suitable length and width.

According to the invention, the floor structure is formed of modules in which the middle module (s) 10a comprises a honeycomb of substantially cured foam material 10, which is separated by partitions or partitions. The rear damper 10a2, i.e. the back piece, and the front module, or front piece 10a3, are outsourced to the factory and are precisely dimensioned for the floor length so that they need to be machined in one dimension only, the floor width. The need for machining is minimal. The only two-dimensionally measurable mo-15 module is the center module 10ai. The centerpiece / centerpieces preferably comprise a separate cross member 15 or 20 for stiffening and entering and inserting the structure. If more than one center module is used, the cross members 15,20 · * · may also have more than one between the different center members. After dimensioning, the module pieces 10ai, 10a2,10ai are glued together, whereby the core structure of the floor structure is made up of said module pieces which are glued together. bottom plate (s) and top plate (s). It should be emphasized here that the I .. * base plates may be one or more plywood boards of different thicknesses and the top boards may be one or more, for example, two plywood boards and (<ι den a profiled aluminum plate, confined to the load space, and a separate cross member can be placed between the middle pieces * · ♦ • · φ. ···, 25 during assembly of the core 100. • · · ··· \ is glued sideways to the associated middle pieces.

The use of a modular floor structure and method of construction provides the advantages of by-pass production. In addition, the floor structure is transformed into a vehicle. Lightweight for 30 applications, which increases the payload of the vehicle, and low construction costs due to the material strength and wall structure used, and the beams are only fitted to the part of the overall floor structure that requires more load resistance and thus sufficient strength, rigidity and torque. duration.

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The curing foam is generally cured foam, for example polyurethane or styrox. The material for the spacers is preferably plywood. Preferably, the cross beams are formed of a sandwich structure comprising, for example, a spruce beam section, an aluminum sheet attached thereto and a plywood panel further attached thereto.

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The floor structure of the vehicle load compartment according to the invention is characterized by what is claimed.

The invention will now be described with reference to some preferred embodiments of the invention shown in Figures 15 of the accompanying drawings, which, however, are not intended to be limited thereto.

Fig. 1A shows the location of the load cell floor element according to the invention. : in the vehicle.

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Figure IB illustrates a modular cargo floor floor structure according to the invention in a step where the biscuit pieces are joined to the back piece and the front piece and the top and bottom panels are still separated before being joined to the floor structure, whereby it forms an integral unit. .

Fig. C shows the floor structure in assembled form.

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Fig. 2A shows a middle section of a floor structure of a modular trough space.

Fig. 2B shows a first preferred embodiment of a rear part of a modular floor structure.

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Figure 2C shows a second embodiment of the back piece.

Fig. 2D shows a first preferred embodiment of the cargo compartment front.

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Figure 2E shows a second preferred embodiment of the cargo compartment front.

Figures 2A, 2B, and 2D relate to the same embodiment of the structural assembly.

Figures 2A, 2C and 2E are related to the same embodiment of the structural assembly.

Figure 3A shows a first preferred embodiment of a cross member in cross section.

Figure 3B shows another preferred embodiment of the cross member in cross section.

• · • * • · · · T *. Fig. 1A shows the load compartment structure of the vehicle and the modular floor structure 10 of the invention as the floor of the load compartment K of the vehicle M. Since • «· 20 loading into the load compartment K is mostly done at the end of the vehicle, it is an invention. ; • according to the strength characteristics of the vehicle, • · • ·. ···. lan floor back piece 10a2 before floor center piece (s) 10ai.

m · ···

Attached to the center piece (s) 10ai is a front piece 10a3 comprising, like a back piece, attachment points F, such as beams, of which the floor structure 10 is a front »· * '**; Preferably, the 25 heads are attached to the vehicle frame by its frame members. According to the invention • · *. · * ·, The floor core 100 is formed by the center piece (s), the back piece *, ···, the face and the front piece. The central body 10ai, i.e. the central module, is formed as a cellular • • · · structure comprising cells made of cured foam (11a1a, 12a2, ..a) separated by spacers (12a1, 12a2 · ..). There may be one centerpiece • * 30 or more. According to the invention, a rear module or back piece 10a2 and a front module 10a3 or front piece are further connected to the center piece according to the invention.

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The rear member I0a2 comprises anchorage points (F) from which the floor structure is connected to the vehicle body. Correspondingly, the front body 10a3 comprises anchorage points (F) from which the structure is connected to the vehicle body M, preferably to its frame members.

Fig. 1B shows a floor structure according to the invention before assembly and Fig. 1C assembled cover plates joined to core 100 after assembly. According to the invention, the floor structure is formed of modules in which the central module (s) 10ai comprise a cellular body made of substantially cured foam material, which is separated by partitions. The rear module 10a2, i.e. the back piece, and the front module, or front piece 10a3, are outsourced to the factory and are precisely dimensioned for the floor length so that they need to be machined in one dimension only, the floor width. The need for machining is minimal. The only module that can be scaled (cut / sawn) in two dimensions is the middle module lOaj. The center piece (s) 10ai-15 preferably comprise a separate cross member 15 or 20 for stiffening the structure and entering and inserting therebetween. If more than one middle module is used, there may also be more than one cross member 15,20. One crossbar is located between the different center pieces • · :::: 10ai. The core 100 of the floor structure is thus composed of modules, which are • «*. **: center piece (s) 10ai, back piece 10a2 and front piece 10a3 .. The middle piece 10ai comprises a cellular plastic cell Ila, na2, lla3 ..., separated by intermediate plates 12ai, 12a2. The assembly IIa1a, IIa2, IIa3 ... ... consists of a cured foam * * * foam, preferably polyurethane or styrox. The spacers 12ai, 12a2 ... are * ** "preferably of plywood. The spacers are placed perpendicular to the vehicle load and... Longitudinal axis X | of the floor. The axis Xt is the length of the floor. sufficient stiffness in the right direction is obtained. There may be one or more center pieces 10aj * ". They are connected by gluing to each other.

The middle section 10ai has a rear panel 10a2 attached to the rear of the vehicle load-bearing floor structure, and a front section 10a3 to the other side.

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According to the invention, both the rear members 10a2 and the front members 10a3 are also cellular cellular honeycomb structures, but each further comprises at least two structural stiffening crossbeams and preferably additionally a separate sheet structure for attaching the floor structure and its unloaded wall structure and thus

Fig. 1B shows the formation of the core structure 100 of the floor structure from the sides of the module pieces 10ai, 10a2 and 10a3 glued together. The base plates 13ai, 13a2 and the cover plates 14ai, 14a2 are joined to the core structure 100 by gluing and pressing 10, whereby the entire floor structure forms a single honeycomb assembly with the strongest parts of the structure located at right angles to the floor structure. However, the floor structure is not too rigid / heavy, since the middle area of the floor structure, which is subject to less stress / load, is made lighter than other sub-floor areas with a basis weight (kg / m2).

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As shown in Fig. 1B, a separate tension beam 15 is used between the middle pieces 10aj to tighten the structure. The pieces 10ai are glued to the cross member in the step of forming the 15 core. it will be appreciated that the cross-beam structure may also be of a different type than that shown in Figure IB.

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Figure 1C shows the floor structure of Figure IB in an assembled axonometric representation.

• · · * ·. · * ·. 25 »M ·

Fig. 2A shows the middle of the load floor structure according to the invention. piece or center module 10ai. The central body 10ai comprises a cellular body 1, preferably 11a2, 11a3 ... of cellular plastic, preferably of hardened polyurethane, with »· *. the cells Uai, 11a2, 11a3 separate the spacers 12ai, 12a2, 12a3 ..., which are preferably 30 ft from plywood. The spacers are ribbed components and are arranged perpendicular to the vehicle and load the longitudinal axis Xi.

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Figure 2B shows a back piece or module body 10a2. In the embodiment of Fig. 2B, the back body 10a2 comprises a cellular body 11a1a, 11a2 ... preferably of polyurethane or styrox, separated by spacers 12ai, 12a2,12a3, preferably of plywood. As shown in the figure, the rear end 5a has a transverse beam 15 at one end and a second transverse beam 15 in the middle of the structure. In addition, the other end of the structure has a hexagonal end plate 16.The bottom of the structure has a plywood base 17 and a topsheet 18. Between 15 and 16 there is a second plywood sheet 19 on the top surface 19. The structure of the beam 15 is shown separately in Figure 10 3A.

Figure 2C shows a second embodiment of the module 10a2, i.e. the back piece, of Figure IB. The back piece 10a2 comprises a cellular plastic cell lla, 11a2 ... and between the cells 11a1, 11a2 ... the spacers 12ai, 12a2 ... The foam material is preferably polyurethane and the spacers 12ai, 12a2 ... extend perpendicularly to the central axis Xi. The transverse beams 20 in the embodiment of the figure are located at the other end (front end) of the module 10a2 and in its central region. The structure of the beam is shown in Fig. 3B. The top plate 18 and the bottom plate 17 are plywood. As shown in the figure, the rear end of the module is provided with a steel plate 21 bordered by a cellular plastic field. 20 non dirt, which foam chemistry is limited to side panels of plywood * * • * 12ft Jft

Figure 2D shows the structure of module 10a3, i.e. the front part. The front member, ·,: in this embodiment, is a composite of polyurethane foam 4 · · • ♦. **. 25a, 11a2, 11a3 ..., which are separated by partitions 12ai, 12a2, 12a3 ..., which * * * are preferably plywood. The partitions extend perpendicularly to the central axis X] of the vehicle and the canopy • * · * * ·. The front end piece further comprises spruce * * cross member portions 22 with two overlapping plywood boards 23 and 24 attached to its underside. In addition, at the other end of the front end is a cross member 15,30 shown in Figure 3A.

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Figure 2E shows another preferred embodiment of the front piece 10a3 according to the invention. In the embodiment of the figure, the front body 10a3 is composed of cells laa, lla2, lla3 ...., preferably cured polyurethane foam cells, preferably separated by plywood partitions 12ai, 12a2 ... located in the middle of the structure 20 shown in Fig. 3B. Correspondingly, at the other end of the structure is located a cross beam 20 shown in Figure 3B.

Figure 3A shows a floor cross member 15 comprising a beam portion 24 of spruce wood 10, an aluminum sheet 25 and a plywood sheet 26 beneath it.

Fig. 3B shows a cross beam 20 comprising lateral plywood panels 12an and 12an-i, a polyurethane cell 27 above, plywood 28 below, and steel sheet 29 below, and plywood 30 below. 1 15 • 1 • »···· · • · · «· * · • 1 • t ·· 1 • · ♦ • 1 - •» * · · • • • · · • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •.

• ·· • · • e. ·· - · * · · * · · · # 1 · · · 1 «« «* · · * ·.

Claims (12)

A vehicle load compartment floor structure (10) having a core (100) of modular structure by gluing modular bodies (10ai, 10a2, 10a2) to which the core (100) is joined to the bottom and surface of the core (100) by a top and bottom plate / cover. and base plates (13a), 13a2; 14ai, 14a2), wherein the middle structure (10ai) comprising a cellular cell (11a1, 11a2 ...) of hardened cellular plastic, whose cells (11a1a, 11a2 · - -) are separated by partitions (12ai) , 12a2 ...) and wherein in the middle of the floor structure the rear central module (10a2) and the front module (10a3) at the end of the vehicle load compartment floor structure are connected to said central center pieces (10ai), which front and rear members (10a2, 10a3) also comprise a cell (llai, lla2 ...) made of cured foam, the cells (llai, lla2 ...) of which are separated by partitions (12ai, 12a2 ...) and which have a front and rear body 15 (10a2). , 10a3) comprising cross beams (15 and / or 20 and / or 30) and attachment points (F) for securing the floor structure to the vehicle body, characterized in that the floor structure (10) has greater strength and stiffness in the rear member (10a2) than the middle of the floor structure. ppalee (10ai). • · • * # ··· * * · ·. *. : 20 Vehicle load floor floor structure (10) according to claim 1, characterized in that the middle module (10ai) of the floor structure (10) comprises a structure lighter in weight than · · 4: *** (kg / m) than the advantage of the floor structure. and rear modules • * · (10a2,10a3). · • * • · m • · * · • ♦ · Floor structure according to claim 1 or 2, characterized in that the cells (11a1a, 11a2 ...) are made of polyurethane or styrox and that the partitions (12ai, 12a2, • · 12a3 ...) are plywood and extend perpendicularly to the longitudinal axis of the floor structure. Xi). relative to the axis. • · * * ··· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · www. / www.nm Floor structure according to the preceding claim, characterized in that the longitudinal axis (Xi) of the floor structure (10) is the longitudinal and central axis of the vehicle (M) and its load compartment (K). Floor structure according to Claim 1, characterized in that the back piece (10a2) has a cross member (15) at one end and a cross member (15) in the middle region and a cross member (16) at the other end, and a bottom plate (17) and a top plate (18) and that there is a plate (19) (Fig. 2B) on top of the second cross member (15) and the end beam (16), between the topsheet (18) and the beams (15 and 16) 10. Floor structure according to claim 1, characterized in that at one end of the front part (10a3) of the floor structure there is a cross beam (22) and in the middle area a second cross beam (22) and a plate (24) below it and a second plate (23). ) and that at the other end of the front piece is a cross bar (15) (FIG. 2D). Floor structure according to Claim 1, characterized in that the back piece (10a2) has a beam (20) at one end and a second beam (20) in the middle region, with a plate (18) on the top and a bottom (18). plate (17) and that the back piece (10a2) has • · • .2. a structure comprising a foam material (1 lan) between the steel plate portion (21) and the spacers (12a ', 11: 3: 12an_i) (FIG. 2C). • · · * · • 1 · • · Floor structure according to Claim 1, characterized in that a beam (20) is provided in the middle region of the front member (10a3) of the floor structure 1 and also at the other end is a cross bar (20) (FIG. 2E). »1 t • · * e * 1 Floor structure according to claim 5 or 6, characterized in that the cross member (15) comprises a beam section (24) of spruce, an aluminum sheet (25), and a plywood sheet (26) (FIG. 2B; FIG. 2D; FIG. 2D). 3A). • · · «· · • 2 * · 3 * · 1 117794 Floor structure according to claim 7 or 8, characterized in that the cross-member (20) of the floor structure comprises side panels (12an, 12an.i) and a polyurethane layer (27), a plywood (28), a steel plate (29) and a second plywood (29). 30) (FIG. 2C; FIG. 2E; FIG. 3B). 5 10 1 1 7794 Floor structure according to Claim 1, characterized in that the back piece (10a2) of the floor piece and the front piece (10a3) of the floor piece comprise plywood sheets (17,18) as top and bottom panels. Floor structure according to Claim 1, characterized in that there are more than one middle modules, i.e. middle pieces (10ai), and that a structure-stiffening cross member (15) is used between the middle pieces. • • • • • 1 1 • 1 · · · * t · · · «· · 1 · 1 · 1 · 1 · 1 · 1 · · · · · · · · · · · • • • • • »* · * 1 · * · · • 1 1 • ft 1 ··· ft • · * 1 · * ft • · 1 ·· ·« • ft ft ft • • ft ft. ft • · ft ft • ft · • ft • ft ft · · 13 1 1 7794