JP6780982B2 - Support structure of loading platform board in truck - Google Patents

Description

The present invention relates to a support structure for a loading platform board in a truck, and more particularly to a supporting structure for a loading platform board that is advantageously adopted for a light truck.

Conventionally, a natural wood-based board material such as Apiton material has been widely used as a loading platform board (floor plate) constituting a loading platform of a truck. However, since the natural wood-based board has water absorption, it is vulnerable to water, and because it has poor weather resistance, it has an inherent problem that warping and deformation are likely to occur as the period of use is extended. Furthermore, in recent years, from the viewpoint of preventing resource depletion and preserving the global environment, it is becoming difficult to obtain South Sea materials such as Apiton materials due to the tightening of logging regulations. ..

Under such circumstances, in Patent Document 1 (Japanese Unexamined Patent Publication No. 2014-15135), a plurality of deck structures formed of synthetic resin and arranged side by side in the width direction as a deck structure used for a loading platform of a transportation vehicle such as a truck. A plate material and a connecting member extending along the longitudinal direction of the plate materials and connecting the plate materials arranged adjacent to each other are proposed. In the patent document, the deck structure disclosed therein uses a natural wood-based board material so that liquids such as water, chemicals, and oil do not soak into the board material because the board material is made of synthetic resin. It is possible to reduce the weight of the deck structure compared to the case where the deck structure was used, and since the adjacent plate materials are connected by connecting members, it is possible to prevent liquids such as water from seeping into the plate materials. However, it is stated that it is not easily damaged even if it receives a large external force.

However, as disclosed in Patent Document 1, in a deck structure in which a deck (loading board) is formed by using a plurality of plate materials and adjacent plate materials are connected to each other by a predetermined connecting member, the connecting member is used. It is unavoidable to increase the weight due to the use of. An increase in vehicle weight is directly linked to deterioration of fuel efficiency, and in particular, for light trucks with a standard load capacity of less than 4 tons (the maximum load capacity is 3 tons or less depending on the classification), from the viewpoint of improving fuel efficiency, There is a strong demand for weight reduction of the vehicle.

Japanese Unexamined Patent Publication No. 2014-15135

Further, particularly in a light truck, the number of vehicle component parts arranged directly under the loading platform board is smaller than that of a large truck or a medium-sized truck, and the size is relatively small, for example. It is required to take measures against the adhesion of moisture such as muddy water splashed by the tires during traveling to the lower surface of the loading platform board (the surface opposite to the surface on which the luggage or the like is loaded). When the loading platform board is composed of a plurality of plate-shaped members, the attached moisture reaches the upper surface of the loading platform board through a combination portion (joint portion) between the plate-shaped members, and as a result, the loading platform board is loaded. There is a risk of getting the luggage etc. wet.

Here, the present invention has been made in the context of such circumstances, and the problem to be solved is that although it has a simple structure, the intrusion of moisture from the lower surface side of the loading platform board is effective. It is to provide a support structure for a carrier board in a truck that can be blocked.

Then, in order to solve such a problem, the present invention is in a truck in which a loading platform board is supported by at least a pair of side frames and one or more horizontal roots interposed between the pair of side frames. The loading platform board has a support structure. 1) The loading platform board is composed of a plurality of synthetic resin plate-shaped members having a rectangular shape in a plane, which are combined in the vehicle front-rear direction and the vehicle width direction. 2) The combination portion between the two plate-shaped members adjacent to each other in the vehicle front-rear direction on the loading platform board is arranged on the horizontal root thickness, so that the two plate-shaped members are supported by the horizontal root thickness. ) The two plate-shaped members adjacent to each other in the vehicle width direction of the loading platform board have the other plate-shaped member in the concave groove portion provided on the end face of one of the two plate-shaped members. The gist thereof is a support structure of a loading platform board in a truck, which is characterized in that the ridges provided on the end faces are fitted and combined.

In the preferred first aspect of the support structure according to the present invention, the penetration depth of the concave groove portion is made larger than the protrusion height of the convex portion.

Further, in a preferred second aspect of the support structure of the present invention, at least a portion of the plate-shaped member supported by the horizontal root thick is made of a non-foamed synthetic resin, while the other portions are foamed. It is composed of synthetic resin.

Further, in the preferred third aspect of the support structure according to the present invention, the approach R portion is formed on the peripheral edge of the surface of the plate-shaped member on the side not in contact with the horizontal root thickness.

As described above, in the support structure of the loading platform board in the truck according to the present invention, the loading platform board is composed of a plurality of plate-shaped members having a flat rectangular shape, and two plate-shaped members adjacent to each other in the front-rear direction of the vehicle. While the combination portion formed between them is arranged on the horizontal root, the two plate-shaped members adjacent to each other in the vehicle width direction are formed by being combined by a predetermined fitting structure. By adopting such a configuration, the support structure of the present invention has a simpler structure than the conventional one, but can effectively prevent the intrusion of water from the lower surface side of the loading platform board. It is.

Further, in the support structure of the present invention, since a loading platform board in which plate-shaped members made of synthetic resin are combined without using other members such as connecting members is adopted, the weight of the loading platform board is increased. It is effectively suppressed, and it is possible to advantageously enjoy the benefits of weight reduction due to the adoption of a loading platform board composed of a plurality of plate-shaped members made of synthetic resin, without any loss. Furthermore, various effects due to the use of synthetic resin plate-like members instead of natural wood-based plate materials, specifically, the need for surface coating required for natural wood-based plate materials, are low. It is also advantageous to have water absorption, excellent weather resistance and long-term use, and easy availability of synthetic resin as a material. In addition, since the loading platform board in the present invention is composed of a plurality of plate-shaped members, even if a partial damage occurs, it is sufficient to replace only the plate-shaped member related to the damaged portion. Therefore, compared to the conventional loading platform board made of a single piece of natural wood board, it is more convenient and enjoys the benefit of being able to keep the usage cost (running cost) low. You can do it.

It is a perspective explanatory view which shows the state which the loading platform board is supported according to the support structure of this invention. It is a top view of the plate-shaped member constituting the loading platform board shown in FIG. It is a bottom view of the plate-shaped member constituting the loading platform board shown in FIG. It is a front view of the plate-shaped member which constitutes the loading platform board shown in FIG. It is a rear view of the plate-shaped member constituting the loading platform board shown in FIG. It is a left side view of the plate-shaped member constituting the loading platform board shown in FIG. It is a right side view of the plate-shaped member constituting the loading platform board shown in FIG. It is a top view of the support state of the loading platform board shown in FIG. It is a bottom view about the support state of the loading platform board shown in FIG. It is explanatory drawing which partially enlarged the cross section AA in FIG. It is explanatory drawing which partially enlarged the BB cross section in FIG. It is a partially enlarged sectional view of the plate-shaped member used advantageously in this invention. It is a partially enlarged sectional view of the plate-shaped member used advantageously in this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings as appropriate. In addition, all the drawings used in the following description are for facilitating the understanding of the present invention, and are drawings depicting only essential or related components (members) of the present invention, and drawings. It should be understood that it is a diagram in which only the technical feature portion of the present invention is extracted, or that it is a diagram in which the technical feature portion of the present invention is intentionally enlarged and expressed.

FIG. 1 is a perspective explanatory view showing a state in which a loading platform board is supported in a light truck according to the support structure according to the present invention. As shown in FIG. 1, the loading platform board 10 is composed of 12 plate-shaped members 12, and more specifically, four plate-shaped members 12 are formed in the front-rear direction of the vehicle. Further, in the vehicle width direction, three plate-shaped members 12 are formed by being combined with adjacent plate-shaped members, respectively.

Further, such a loading platform board 10 is supported by a pair of side frames 14a and 14b, a rear frame 16, and seven horizontal roots not shown in the figure (see FIG. 9). In FIG. 1, reference numeral 17 denotes a cover member that covers the front end of the loading platform board 10 on the vehicle front side. The side frame 14a has a notch in a part thereof in order to prevent interference with the tire. Further, since the support of the loading platform board 10 in the side frames 14a and 14b and the rear frame 16 has been carried out by using conventionally known methods and members, detailed description thereof will be omitted.

In the following, first, the plate-shaped member 12 constituting the loading platform board 10 will be described in detail. Regarding the plate-shaped member 12, a plan view is shown in FIG. 2, a bottom view is shown in FIG. 3, a front view is shown in FIG. 4, a rear view is shown in FIG. 5, a left side view is shown in FIG. 6, and a right side view is shown in FIG. Each figure is shown. As is clear from FIGS. 2 to 7, the plate-shaped member 12 has a substantially rectangular shape as a whole in a plan view. In the following description, the longitudinal direction of the plate-shaped member 12 is the left-right direction in FIGS. 2 to 5, and the lateral direction of the plate-shaped member 12 is shown in FIGS. 2, 3, 6, and 7. The vertical direction and the vertical direction of the plate-shaped member 12 indicate the vertical direction in FIGS. 4 and 5 (horizontal direction in FIGS. 6 and 7), respectively.

At one end of the plate-shaped member 12 in the longitudinal direction (left end in FIG. 2), the height from the lower surface of the plate-shaped member 12 is the thickness of the plate-shaped member 12 below the end (FIG. 2). An engaging portion 18 projecting outward is provided, which is h shown in 4 and is half the height excluding the thick ribs described later. The same shall apply hereinafter). Further, the engaging portion 18 is formed with two engaging convex portions 20 and 20 projecting further outward (to the left in FIG. 2) (in particular, FIGS. 2, 4 to 6). See). When these two engaging convex portions 20 and 20 are combined with other plate-shaped members 12, they are engaged with the engaging concave portions 24 and 24 described later, so that a positional shift occurs between adjacent plate-shaped members. This is to prevent the problem advantageously.

Further, at the other end portion (right end portion in FIG. 2) in the longitudinal direction of the plate-shaped member 12, the height from the upper surface of the plate-shaped member 12 is the thickness of the plate-shaped member 12 above the end portion. An engaging portion 22 protruding outward, which is half of the above, is provided. Further, two engaging recesses 24, 24 are formed in the portion of the other end where the engaging portion 22 is not provided (see particularly FIGS. 3 and 7 above). These two engaging recesses 24, 24 are formed in a size and shape corresponding to the two engaging protrusions 20, 20 in the engaging portion 18 described above.

On the other hand, at one end of the plate-shaped member 12 in the lateral direction (upper end in FIG. 2), a ridge protruding outward toward the central portion of the plate-shaped member 12 in the thickness direction at the end. A section 26 is provided. The ridges 26 are also provided with two engaging protrusions 28, 28 that project further outward (see, in particular, FIGS. 2, 3 and 5). Even in these two engaging convex portions 28, 28, when combined with another plate-shaped member 12, the position between the adjacent plate-shaped members is formed by engaging with the engaging concave portions 32, 32 described later. This is to advantageously prevent the occurrence of deviation.

Further, at the other end portion (lower end portion in FIG. 2) of the plate-shaped member 12 in the lateral direction, a concave groove portion 30 is provided at the central portion of the plate-shaped member 12 in the thickness direction at the end portion. (See FIG. 4). Further, in the concave groove portion 30, when the two engaging concave portions 32, 32 are combined with the other plate-shaped member 12, they engage with the two engaging convex portions 28 in the convex strip portion 26 described above. It is formed in a possible size and shape.

Here, in the plate-shaped member 12 according to the present embodiment, the penetration depth of the concave groove portion 30 is set to be larger than the protrusion height of the ridge portion 26. When the plate-shaped members 12 having such a configuration are combined in the lateral direction, a vacant space 36 is generated in the concave groove portion 30 as shown in FIG. Due to the existence of such a vacant space, even if moisture invades from the lower surface (lower surface of FIG. 11) of the loading platform board 10 through the contact surface between the adjacent plate-shaped members 12 due to the capillary phenomenon. The invading moisture is effectively stopped in the vacant space 36, and it is possible to more effectively prevent the invasion of moisture from the lower surface side of the loading platform board.

In addition to the above-described configuration, the plate-shaped member 12 has eight ribs 34 for reinforcing the plate-shaped member 12 (the mechanical strength of the plate-shaped member 12 is increased, as is clear from FIGS. 3 to 7). (To improve), it is erected on the thick portion 35 protruding from the lower surface of the plate-shaped member 12.

Furthermore, in the plate-shaped member 12 shown in FIGS. 2 to 7, the thickened portion 35 includes the eight ribs 34 provided on the lower surface of the thickened portion 35, and is a foamed synthetic resin. On the other hand, the parts other than this part are made of non-foamed synthetic resin. In FIG. 2, the portion surrounded by the alternate long and short dash line is the thick portion 35. As is clear from FIG. 9 used in the later description, the thick portion 35 in the plate-shaped member 12 is at least a portion that is not supported by the horizontal root thickness. The loading platform board that constitutes the loading platform of a light truck is required to be lighter than that of a large truck or a medium-duty truck. By forming the thick portion 35 with a foamed synthetic resin, the plate-shaped member 12 It is advantageous to further reduce the weight of the plate-shaped member 12, and thus the loading platform board 10, while maintaining the strength of the above.

The synthetic resin constituting the plate-shaped member 12 may be any synthetic resin as long as the plate-shaped member 12 having the above-mentioned structure can be molded according to various conventionally known molding methods. Can also be used. For example, a mold that gives the shape of the plate-shaped member 12 described above according to the core back injection foam molding method, and can change the cavity volume of the portion corresponding to the portion surrounded by the dotted line in FIG. In such a mold, a glass fiber reinforced polypropylene mixed with a foaming agent is filled, and after filling, the cavity volume of the portion corresponding to the portion surrounded by the dotted line in FIG. 2 is changed. The plate-shaped member 12 described above can be advantageously manufactured by pulling the mold (pulling the mold to increase the cavity volume).

As shown in FIGS. 1 and 8, a plate-shaped member 12 having the above-described configuration is placed between two plate-shaped members 12 adjacent to each other in the longitudinal direction with an engaging portion 18 in one plate-shaped member 12 and another. The ridge portion 26 in the plate-shaped member 12 is overlapped with the engaging portion 22 in the plate-shaped member 12 (see FIG. 10), and the convex portion 26 in the plate-shaped member 12 is formed between the two adjacent plate-shaped members in the lateral direction. The loading platform board 10 is configured by fitting and assembling into the concave groove portion 30 of the other plate-shaped member 12 (FIG. 11).

The support state of the loading platform board 10 by Yokoneta according to the present embodiment can be grasped in detail from FIG. As is clear from FIG. 9, in the support structure disclosed therein, six horizontal roots that are assembled and fixedly arranged on each of the side frames 14a and 14b together with the side frames 14a and 14b and the rear frame 16 The loading platform board 10 is supported by the 38a and one horizontal root thickness 38b. The six horizontal roots 38a and the single horizontal root 38b are all assembled to a chassis frame (not shown) according to a known method. Further, the reason why the Yokoneta 38b is not attached to any of the side frames is to avoid interference with the tires.

Then, in the loading platform board 10 shown in FIGS. 1, 8 and 9, the combination portion between the two plate-shaped members adjacent to the vehicle front-rear direction (longitudinal direction of the plate-shaped member 12) is located on the horizontal root. The two plate-shaped members are supported by the horizontal roots. More specifically, as is clear from FIG. 10, which is a partially enlarged explanatory view of the AA cross section in FIG. 8, between the two adjacent plate-shaped members, the engaging portion 18 of one plate-shaped member 12 and the other. A combination portion formed by overlapping the one plate-shaped member 12 with the engaging portion 22 is arranged on the horizontal root thickness 38a, and the two plate-shaped members 12 are supported by the horizontal root thickness 38a. As a result, the invasion of moisture from the lower surface (lower surface of FIG. 10) side of the loading platform board 10 is effectively blocked by the horizontal root thickness 38a.

Further, even in the combination portion between the two plate-shaped members adjacent to each other in the vehicle width direction (the lateral direction of the plate-shaped member 12), the structure is characteristic as described above by presenting FIG. From this point, the intrusion of moisture from the lower surface side of the loading platform board is effectively blocked.

As described in detail above, the support structure of the loading platform board in the truck according to the present invention is a simple structure, but the intrusion of water from the lower surface side of the loading platform board is effectively prevented. ..

Furthermore, the plate-shaped member 12 constituting the loading platform board 10 in the above-described embodiment can be advantageously manufactured according to an injection molding method such as a core back injection foam molding method. When the plate-shaped member 12 is manufactured according to the injection molding method, only the mold corresponding to the concave groove portion 30 and the engaging concave portion 32 needs to have a slide structure, and the cost required for the mold can be kept low. ..

Although the typical embodiments of the present invention have been described in detail above, it goes without saying that the present invention is not limited to the above-described embodiments.

For example, in the above-described embodiment, the two plate-shaped members adjacent to each other in the front-rear direction of the vehicle are an engaging portion (18) provided on one of the two plate-shaped members and the other plate-shaped member. It is combined by overlapping with the engaging portion (22) provided on the member. However, in the support structure according to the present invention, the two plate-shaped members adjacent to each other in the vehicle front-rear direction are recessed provided on the end surface of one plate-shaped member in the same manner as the two plate-shaped members adjacent to each other in the vehicle width direction. It is also possible to combine the grooves by fitting the ridges provided on the end faces of the other plate-shaped member.

Further, in the present invention, it is also possible to form the approach R portion on the peripheral edge of the surface of the plate-shaped member on the side not in contact with the horizontal root thickness. Here, the approach R means an arc having a relatively large radius of curvature, which is adopted between a straight line and an arc.

A plate-shaped member having an approach R portion will be described with reference to FIGS. 12 and 13, and the plate-shaped member 12'shown in those drawings is in the above-described embodiment except that the plate-shaped member 12'has an approach R portion 40. It has the same structure as the plate-shaped member 12. A support structure in which such a plate-shaped member 12'is used to form a loading platform board 10', and the loading platform board 10'is supported by a pair of side frames, a rear frame, and a horizontal root thick as shown in FIG. FIG. 12 is an explanatory view of a partially enlarged cross section cut on the surface corresponding to the AA surface in FIG. 8, and FIG. 13 is a partially enlarged cross section cut on the surface corresponding to the BB surface in FIG. It is explanatory drawing. When the plate-shaped member 12'provided on the peripheral edge of the surface on the side where the approach R portion 40 having the approach R described above does not come into contact with the horizontal root thickness, the impression of the surface of the loading platform board 10'is gentle. It is possible to Further, even if the loading platform board 10'has a slight step between adjacent plate-shaped members 12', the plate-shaped member 12'has the approach R portion 40 as described above. Therefore, it is possible to move the load on the loading platform board 10'by sliding it smoothly regardless of the step existing between the adjacent plate-shaped members 12'.

Further, the loading platform board adopted in the present invention has four plate-shaped members assembled in the vehicle front-rear direction and three plate-shaped members in the vehicle width direction, like the loading platform board 10 according to the above-described embodiment. It goes without saying that is not limited to what is assembled and configured. For example, even in a loading platform board long in the vehicle front-rear direction in which six plate-shaped members are assembled in the vehicle front-rear direction and three plate-like members are assembled in the vehicle width direction, the present invention is adopted. It is possible. In short, as long as the combination portion of the two plate-shaped members adjacent to each other in the vehicle front-rear direction is arranged on the horizontal root thick interposed between the side frames, the plate-shaped members constituting the loading platform board are arranged in the vehicle front-rear direction. And the number of each assembly in the vehicle width direction can be set as appropriate.

In addition to the specific description described above, various changes, modifications, improvements, etc. may be made to the present invention based on the knowledge of those skilled in the art as long as the gist of the present invention is not deviated. It should be understood that it is a thing.

As described above, the support structure of the loading platform board in the truck according to the present invention can effectively prevent the intrusion of moisture from the lower surface side of the loading platform board while having a simple structure, and also. The benefits of weight reduction due to the adoption of synthetic resin plate-shaped members can also be enjoyed without loss. From the above, the support structure of the present invention can be suitably adopted particularly in a light truck.

10 Loading platform board 12 Plate-shaped members 14a, b Side frame 16 Rear frame 18 Engaging part 22 Engaging part 26 Convex part 30 Concave groove part 34 Rib 35 Thick part

Claims (5)

At least, the support structure of the loading board in a truck in which the loading board is supported by a pair of side frames and a plurality of horizontal roots interposed between the pair of side frames at a predetermined interval is formed .
The loading platform board, a plurality of synthetic resin plate-like member exhibiting a flat rectangular shape, are combined in the vehicle longitudinal direction and the vehicle width direction, is configured, also two adjacent in the longitudinal direction of the vehicle in the loading platform board combining portion between the plate-like member, by being disposed on the transverse joists, said two plate-like member is supported by transverse joists, and two plates adjacent to a vehicle width direction in the loading platform board In the shaped member, a concave groove portion provided on the end face of one of the two plate-shaped members is fitted with a ridge portion provided on the end face of the other plate-shaped member. , Combined and
The portion of the plate-shaped member supported by the horizontal root thickness, including at least both ends in the front-rear direction of the vehicle, is made of a non-foamed synthetic resin, while a thick portion is formed in the other portion, and further. A support structure for a loading platform board in a truck , wherein a plurality of ribs are erected on the lower surface of the thick portion, and the thick portion and the plurality of ribs are made of a foamed synthetic resin . The support structure for a loading platform board in a truck according to claim 1, wherein the penetration depth of the concave groove portion is larger than the protrusion height of the convex portion. A combination portion between two plate-shaped members adjacent to each other in the front-rear direction of the vehicle is provided on the upper portion of one end of the two plate-shaped members, and protrudes at half the thickness of the plate-shaped members. An upper engaging portion to be formed and a lower engaging portion provided at a lower portion of the other end of the two plate-shaped members and projecting with half the thickness of the plate-shaped member. It is formed by overlapping, and an engaging recess is formed in the lower portion of the end portion of the plate-shaped member provided with the upper engaging portion, while the tip portion of the lower engaging portion is formed. When the upper engaging portion and the lower engaging portion are overlapped with each other, the engaging concave portion and the engaging convex portion are fitted to each other. The support structure for a loading platform board in a truck according to claim 1 or 2, wherein the misalignment of one plate-shaped member in the vehicle width direction is prevented. An engaging recess is formed at the bottom of the recessed groove provided on one end face of two plate-shaped members adjacent to each other in the vehicle width direction, while the other end face of the two plate-shaped members is formed. When an engaging convex portion is formed on the tip surface of the convex portion provided in the above and the concave groove portion and the convex portion are fitted to each other, the engaging concave portion and the engaging convex portion engage with each other. The support structure for the loading platform board in the truck according to any one of claims 1 to 3, wherein the misalignment of the two plate-shaped members in the vehicle front-rear direction is prevented. The support structure for a loading platform board in a truck according to any one of claims 1 to 4 , wherein an approach R portion is formed on the peripheral edge of the surface of the plate-shaped member that does not come into contact with the horizontal root thickness.

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