JP2009107402A - Floor frame member of box-shaped cargo bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor frame member of a box-shaped cargo bed which is built on a vehicle for cargo and has excellent appearance, lightweight structure and sufficient strength. <P>SOLUTION: The floor frame member of the box-shaped cargo bed is built on a vehicle body, and provided on a side of a floor part of the box-shaped cargo bed along the advancing direction of the vehicle body, and arrayed in the vehicle width direction of the vehicle body, and has a U-shaped section with an end in the vehicle width direction of a cross sill for supporting the floor part; and further has an extension part extending below the vehicle body on a lower piece of the floor frame member corresponding to a lower horizontal portion of the U-shaped section. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a floor frame member of a box-type cargo bed mounted on a cargo vehicle.

  A box-type cargo bed mounted on a cargo vehicle, such as a wing-type body, is provided with an openable / closable roof member provided on the upper surface, a front wall provided in front, an open / close door provided in the rear, and both left and right sides. It is comprised from the member of 6 surfaces, such as the provided side wall board and the floor member provided in the lower surface. Of these, the floor member is composed of a vertical joist arranged in the vehicle traveling direction, a horizontal joist provided in a direction intersecting the vertical joist, a floor material constituting the floor surface of the box-type cargo bed, and the like. It is attached to the chassis frame of the vehicle body through joists.

Furthermore, on both the left and right sides of the floor member, floor frame members are provided along the traveling direction of the vehicle, and the end of the horizontal joist in the vehicle width direction is fixed to the floor frame member and the side wall plate can be rotated. Attachment, the floor member and the side wall plate are connected.
JP 2001-347968 A

  The conventional floor frame member is formed from an extruded material of aluminum or an alloy thereof, and is formed in a U-shaped cross section into which an end portion of the horizontal joist 52 is incorporated as shown in FIG. Accordingly, the floor frame member 100 has a lower piece 102 of the floor frame member 100 bent at a substantially right angle from the vertical piece 104, and when a pedestrian or the like sees a freight vehicle mounted with a wing-type body, the floor frame member 100 is horny and hard. There was a feeling.

  Moreover, since the weight of the load loaded on the loading platform is applied to the floor frame member through the horizontal joists, it is necessary to design the strength so that the floor frame member does not bend due to the weight. However, the shape of the floor frame member is almost determined by the height of the horizontal joists combined with the floor frame member. Therefore, increasing the thickness of the floor frame member in order to increase the strength is not preferable because the amount of material used increases and the weight increases.

  An object of the present invention is to solve the above-mentioned problems, and to provide a floor frame member of a box-type cargo bed mounted on a cargo vehicle, which is excellent in appearance, lightweight and has sufficient strength.

  In order to solve the above-described problems, the present invention is configured as follows for a floor frame member of a box-type cargo bed.

  1. A floor frame member of a box-type carrier mounted on a cargo vehicle, having a U-shaped cross-section, and provided on the left and right sides of the box-type carrier along the traveling direction of the cargo vehicle In addition, on the chassis frame of the cargo vehicle, a lateral joist end portion in the vehicle width direction arranged in the vehicle width direction of the cargo vehicle is incorporated, and further corresponds to the lower horizontal portion of the U-shaped section. A floor frame member of a box-type cargo bed is configured by providing an extension portion extending downward of the cargo vehicle on the lower piece. The box-type loading platform includes a van-type body in addition to a wing-type body having a wing roof that can be opened and closed on the side.

  In the floor frame member of the box-type cargo bed described in 2 or 1, the extension portion is curved in the vehicle width direction of the cargo vehicle.

  In the floor frame member of the box-type cargo bed described in 3 and 2, the extension portion is curved in the vehicle body inner side direction of the cargo vehicle.

  4. The floor frame member of the box-type cargo bed according to 1, 1 or 2, wherein the floor frame member is an aluminum extrusion molding material, and the extension portion is a vertical piece corresponding to the U-shaped vertical portion of the cross section. It was assumed that they were formed continuously.

The floor frame member of the box-type cargo bed according to the present invention has the following effects.
Since the extension part extended below the floor frame member is provided on the lower piece of the floor frame member having a U-shaped cross section, the strength of the floor frame member against bending is improved. Further, since the extension portion is curved, the strength increases with respect to the bending force acting in the vehicle width direction in addition to the bending force acting in the vertical direction.

  Since the extension is curved inside the vehicle, the lower part of the floor frame member is formed into a gently curved surface, and when a pedestrian sees a freight vehicle with a box-type cargo bed mounted, it walks with aesthetics and security Can be given to a person. In addition, the height of the side surface of the floor frame member is increased, and the extension is curved inward of the vehicle, so that the appearance of the floor frame member can be felt thicker in the vehicle width direction. Can bring an image.

An embodiment of a floor frame member according to the present invention will be described with reference to the drawings.
FIG. 1 shows a wing type vehicle 10. The wing type vehicle 10 is a freight vehicle in which a wing type body 14 is mounted behind the vehicle body 12. The vehicle main body 12 includes a cabin portion 16 having a driver's seat, an engine (not shown), a chassis frame 13 (see FIG. 3), and the like, and is configured to be able to run on its own. The wing type body 14 is attached to the chassis frame 13 of the vehicle body 12. Hereinafter, the traveling direction of the vehicle main body 12 is defined as the front, the left and right are determined with respect to the front, the direction of gravity is defined as the downward direction, the side toward the center of the vehicle is defined as the inner direction, and the opposite is defined as the outer direction.

  The wing-type body 14 includes a floor member 20, a front wall 22 provided in the front, an open / close door 24 provided in the rear, a wing roof 26 provided in the upper portion, and a side wall provided in the side. It consists of a plate 28 and the like.

  Support members 30 are provided at the four corners of the wing-type body 14. The column members 30 are provided vertically on the floor member 20, and two front column members 32 are provided on the front side and two rear column members 34 are provided on the back side.

  A front beam member 36 is provided above the two left and right front support members 32, and a front wall 22 is provided on the inner side surrounded by the front beam members 36 and the front support members 32 provided on the left and right sides. ing.

  Further, a rear beam member 38 is extended to the left and right above the two left and right rear column members 34, and the rear beam member 38 and the left and right rear column members 34 constitute a gate-type support structure. An opening / closing door 24 is provided inside the door so as to be freely opened and closed.

  A center rail 40 is bridged along the vehicle longitudinal direction between the center of the front beam member 36 in the vehicle width direction and the center of the rear beam member 38 in the vehicle width direction. The center rail 40 is provided in the center of the vehicle body 12 along the front-rear direction, and the wing roof 26 is rotatably attached to the center rail 40 via a hinge.

  The wing roof 26 is formed in an L shape by a roof member 44 corresponding to the left and right half of the ceiling portion of the wing-type body 14 and a side wall member 46 from the roof member 44 to the side wall plate 28. . A driving device 42 composed of a cylinder mechanism or the like is assembled to the wing roof 26, and the wing roof 26 is rotationally driven in the vertical direction around the center rail 40 by the driving device 42.

  3 and 4, the floor member 20 is a rectangular flat plate member composed of a vertical joist 50, a horizontal joist 52, a floor material 54, and the like, and floor frame members on the left and right sides of the floor member 20 along the vehicle traveling direction. 56 is provided.

  The longitudinal joists 50 are fixed on the chassis frame 13 of the vehicle body 12 along the chassis frame 13. The horizontal joists 52 are substantially U-shaped in cross section, and a plurality of the horizontal joists 52 are arranged at predetermined intervals in the front-rear direction of the vehicle main body 12 along the vehicle width direction of the vehicle main body 12 and fixed to the vertical joists 50 by the brackets 58 respectively. ing.

  The floor frame member 56 is shown in FIG. The floor frame member 56 is made of an aluminum extruded material, and is formed in an approximately U shape from an upper piece 60, a lower piece 62, and a vertical piece 64 that connects the upper piece 60 and the lower piece 62. The U-shaped opening of the floor frame member 56 opens toward the inside of the vehicle main body 12, and the distance between the openings is substantially equal to the height width of the horizontal joists 52.

  The upper piece 60 of the floor frame member 56 is formed with a protruding piece 61 and a bolt hole 66 protruding upward. The lower piece 62 of the floor frame member 56 is formed substantially parallel to the upper piece 60, and the lower piece 62 is provided with a bolt hole 68. Further, on the lower surface of the lower piece 62, a tongue piece 70 is provided as an extension that projects downward continuously from the vertical piece 64. The tongue piece 70 is integrally formed by extrusion, has a thickness width substantially equal to the thickness width of the lower piece 62, and is curved inside the vehicle body 12.

  The floor frame member 56 is fixed to the end of the lateral joist 52 in the vehicle width direction using bolts 67 as shown in FIGS.

  Thus, the floor frame member 56 is provided on both the left and right sides of the lower end of the wing-type body 14, and the tongue piece 70 is formed on the lower piece 62 of the floor frame member 56 so as to be curved inside the vehicle body 12 with a gentle arc. Therefore, when a pedestrian or the like looks at the wing-type vehicle 10, it is possible to give the pedestrian a beauty or a sense of security.

  Further, since the tongue piece 70 extends below the lower piece 62, the floor frame member 56 has high strength against vertical deformation, and the tongue piece 70 is curved inside the vehicle body 12. Therefore, it has high strength against deformation in the vehicle width direction in addition to vertical deformation.

  Further, since the tongue piece 70 extends downward, the height of the floor frame member 56 is increased, and since the tongue piece 70 is curved inward, the thickness is felt in the vehicle width direction, and the weight is reduced substantially. Even when the floor frame member 56 is configured to be thin, a sturdy appearance and a stable atmosphere can be imparted to the vehicle.

  In the above example, the tongue piece 70 is formed below the lower piece 62 and continuously with the vertical piece 64. However, the present invention is not limited to this, and the tongue piece 70 is formed by providing a step with the vertical piece 64. Also good. Further, although the tongue piece 70 is formed to be curved inside the vehicle body 12, the present invention may not be curved. Further, the vehicle body 12 may be curved outward. Furthermore, you may form a protrusion part by a part of closed cross-sectional shapes, such as an ellipse, instead of piece shape.

  Moreover, you may use for the floor frame member of a van type body instead of the wing type body 14. FIG.

The perspective view which shows the vehicle for cargo which mounted the wing type body in which one Embodiment of the floor frame member concerning this invention is used. Sectional drawing which shows one Embodiment of the floor frame member concerning this invention. Sectional drawing of the floor member which assembled | attached the floor frame member of FIG. The disassembled perspective view of the floor member which assembles the floor frame member of FIG. Sectional drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Wing type vehicle 12 ... Vehicle main body 13 ... Chassis frame 14 ... Wing type body 16 ... Cabin part 20 ... Floor member 26 ... Wing roof 28 ... Side plate 40 ... Center rail 50 ... Vertical joist 51 ... Projection 52 ... Yokojota 54 ... Floor material 56 ... Floor frame member 62 ... Lower piece 70 ... Tongue piece

Claims (4)

It is a floor frame member of a box-type cargo bed mounted on a cargo vehicle,
A U-shaped cross-section, provided on the left and right sides of the box-type cargo bed along the traveling direction of the cargo vehicle, and on the chassis frame of the cargo vehicle, the vehicle width of the cargo vehicle The widthwise end of the horizontal joists arranged in the direction is incorporated,
A floor frame member for a box-type cargo bed, further comprising an extension extending downward from the cargo vehicle on a lower piece corresponding to the lower horizontal portion of the U-shaped section.   The floor frame member of the box-type cargo bed according to claim 1, wherein the extension portion is curved in a vehicle width direction of the cargo vehicle.   The floor frame member of a box-type cargo bed according to claim 2, wherein the extension portion is curved in a vehicle body inner side direction of the cargo vehicle. The said floor frame member is an aluminum extrusion molding material, and the said extension part is continuously formed in the vertical piece corresponding to the said U-shaped vertical part of the cross section. The floor frame member of the box-type loading platform described in 1.

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