JPH10329750A - Floor structured of load-carrying platform of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance both strength and durability of the floor structure of a load-carrying platform of a vehicle. SOLUTION: In a floor structure of a load-carrying platform of a vehicle, a plurality of sill crosses 3, whose cross section is of a hat shape, are mounted on and fixed through bolt-fastening to right and left main sills 1, which are mounted on and fixed to a frame (F) of the load-carrying platform, via a plate member 4, which is provided in order to close the opening at the bottom end of the sill cross 3. In addition, a wooden floor member 5 is mounted on and fixed to the sill cross 3. In this case, the main sill is formed of a steel member whose cross section is of an inverted-hat shape. The late member 4 is constituted of a plate member provided with a vertical part 43 which is welded to a longitudinal wall facing the sill cross 3 and a horizontal part 42 which closes the opening of the bottom end of the sill cross 3 and both ends of which are welded to the lower end flange 31 of the sill cross 3. The horizontal part 42 of the plate member 4 which was welded to the sill cross 3 is boltingly fixed to the main sill.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a bed of a vehicle such as a truck, and more particularly to a floor structure of a bed made of wooden boards.

[0002]

2. Description of the Related Art Heretofore, there has been a conventional loading bed for vehicles such as trucks, in which a floor is made of a wooden board in order to reduce an impact at the time of loading / unloading of loaded luggage and to improve stability of loaded luggage. . As shown in FIG. 2, a floor of this type of carrier has a pair of left and right chassis frames F extending in the front-rear direction of the vehicle.
A wooden sill main sill 1A is placed and fixed on the sill, a plurality of sill crosses 3 are laid between the left and right main sills 1A, and a wooden floor member 5 is fixed on the sill cross 3 by nailing. It is.

As shown in FIG. 3, the sill cloth 3 is a steel material having a substantially hat-shaped cross section, and a plate member 4A is provided at a position corresponding to the main sill 1A. The plate member 4A is a steel plate having a bolt hole 45 in the center, and closes the lower end opening of the sill cloth 3;
It is fixed to both lower end flanges 31 of the sill cloth 3 by welding. Then, the plate member 4A is provided on the upper surface of the main sill 1.
And the bolt 48 is inserted through the work hole 34 in the upper surface 33 of the sill cloth 3 into the plate member 4A and the main sill 1.
A is penetrated, and the nut 46A is tightened in the notch 16 formed in the bottom surface of the main sill 1A, thereby connecting the main sill 1A and the sill cloth 3. In addition, main sill 1A
The frame F is fastened and fixed by U bolts 8 and plates 9.

[0004]

However, in the above-mentioned conventional structure, the sill cloth 3 and the plate member 4A are vertically overlapped and welded, so that the welded portion is formed by the vibration in the vertical direction during running of the vehicle. There is a risk of peeling. In addition, the main sill 1A is made of hard wood such as oak, so that the cost is high. And the wood deteriorates over time and U
The bolts 8 may be loosened and the carrier may rattle. Therefore, an object of the present invention is to realize a low-cost, high-durability and high-strength floor structure of a vehicle carrier.

[0005]

According to the present invention, a main sill is provided along left and right chassis frames extending in the longitudinal direction of a vehicle, and a plurality of sill crosses having a hat-shaped cross section are provided on the left and right main sills. In the floor structure of a vehicle bed where the bridge is fixed by bolts via a plate member provided to close the lower end opening and a wooden floor member is mounted and fixed on the sill cloth, the main sill is made of steel material with an inverted hat-shaped cross section. The plate member includes a plate member having a vertical portion to be welded to opposing vertical walls of the sill cloth, and a horizontal portion to close a lower end opening of the sill cloth and weld both ends to a lower end flange of the sill cloth. Then, the horizontal portion of the plate member welded to the sill cloth is fixed to the main sill by bolting (claim 1). The durability of the main sill is improved, and the coupling between the sill cloth and the plate member is added with the coupling in the shear direction against the vertical vibration, so that the sill cloth and the plate member are prevented from being separated from each other.

[0006] The plate member has a first plate member for welding opposite vertical walls having a U-shaped cross section which are open upward to the inner surface of the vertical wall of the sill cloth, and a bottom surface of the first plate member having a flat plate shape. And a second plate member whose both ends are welded to the lower flange of the sill cloth, and both ends of the second plate member and the lower flange of the sill cloth are integrally bolted and fixed to the upper flange of the main sill ( Claim 2). The plate member has a simple structure and can firmly connect the sill cloth and the main sill.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1A, a chassis frame F is made of a steel material having a substantially U-shaped cross section extending in the vehicle front-rear direction. Thus, the main sill 1 is bolted and fixed via the bracket 2. The main sill 1 is opened upward, and upper end flanges 11 are provided at both edges of the opening at the upper end.
The width of the bottom surface 12 is substantially the same as the width of the chassis frame F. The bracket 2 is wider than the chassis frame F and the main sill 1, and has a pair of vertical walls 21 sandwiching left and right side walls 13 of the main sill 1 on both left and right ends, and main sills 1 on both front and rear ends.
And a pair of flanges 22 for supporting the bottom surface 12 of the main sill 1. The vertical wall 21 is welded to the side wall 13 of the main sill 1 and the flange 22 is fixed to the bottom surface 12 of the main sill 1 by welding. The main sill 1 has a sill cloth 3 described later.
Is provided with a reinforcing member 14 having an L-shaped cross section, which is welded by being overlapped and welded along the left and right upper flanges 11 and the left and right side walls 13. The upper flange 11 and the reinforcing member 14 penetrate therethrough. A bolt hole 15 is formed.

The main sill 1 to which the bracket 2 is fixed is arranged so as to be stacked along the chassis frame F. On the lower surface of the chassis frame F, a plate 23 having substantially the same dimensions as the bottom surface of the bracket 2 is applied. , The chassis frame F is sandwiched between the bracket 2 and the plate 23, and long bolts 24 penetrate through the left and right side ends of the bracket 2 and the left and right side ends of the plate 23 that protrude from the chassis frame F. The main sill 1 is placed and fixed on the chassis frame F by tightening the nuts 25 at the lower ends of the main frame.

As shown in FIGS. 1 (A) and 1 (B), the sill cloth 3 extending in the vehicle width direction opens downward like the conventional structure, and has lower end flanges 31 at both edges of the lower end. A plate member 4 is fixed to a lower surface of a steel material having a substantially hat-shaped cross section so as to close an opening of the sill cloth 3 at a position facing the main sill 1.

The plate member 4 is made of steel and has a first plate member 41 having a substantially U-shaped cross section and a second plate member having a flat plate shape.
Of the first plate member 4
The first and second plate members 42 are formed by connecting the bottom surface of the first plate member 41 with the opening upward to the second plate member 42.
It is integrated by welding to. The plate member 4 is
The first plate member 41 is fitted into the sill cloth 3 and its opposed vertical wall (vertical portion) 43 is welded to the opposed vertical wall 32 of the sill cloth 3 to form a second plate member (horizontal portion) 4.
Both ends of the first plate member 41 projecting from the bottom surface 44 are fixed to the sill cloth 3 by welding to the lower end flange 31 of the sill cloth 3. Note that, for the convenience of the welding operation, the vertical wall 43 of the first plate member 41 has a length protruding from the bottom surface 44 of the first plate member 41 and the second plate member 42, and the protruding end thereof is formed on the sill cloth 3. It is welded to the vertical wall 32.

The bottom plate 44 of the first plate member 41 and the second plate member 42 overlapped with the first plate member 41 are respectively provided with bolt holes 45 at positions corresponding to the upper left and right upper flanges 11 of the main sill 1. The first plate member 41 has a weld nut 46 corresponding to the bolt hole 45.
Is provided. The sill cloth 3 is fixed by screwing a bolt 48 from below the upper end flange 11 of the main sill 1 through the reinforcing member 14, the bolt hole 15 of the upper end flange 11, and the bolt hole 45 of the plate member and into a weld nut 46. Then, the floor member 5 made of a wooden board is nailed and fixed to the upper surface 33 of the sill cloth 3.

According to the floor structure of the vehicle bed described above, the sill cloth 3 and the plate member 4 are welded in the shearing direction against the vertical vibration in addition to the welded connection in the direction in which they overlap vertically. The plate member 4 and the plate member 4 are firmly connected to each other, and the vertical movement of the loading platform does not cause separation between the sill cloth 3 and the plate member 4. Further, since the main sill 1 is made of steel instead of the expensive wooden square bar, the cost can be reduced, and the main sill 1 does not deteriorate with the lapse of time.

[0013]

According to the floor structure of the vehicle luggage carrier of the present invention, with a simple structure, the coupling of each member is strengthened, the deterioration with time is suppressed, the durability can be improved, and the cost can be reduced. .

[Brief description of the drawings]

FIG. 1 shows a floor structure of a luggage carrier according to the present invention.
(A) is an exploded perspective view, and FIG. 1 (B) is IB-IB of FIG. 1 (A).
It is sectional drawing of the assembly state in the position along a line.

FIG. 2 is a perspective view showing a floor structure of a conventional carrier.

3 (A) is an exploded perspective view of a floor structure of a conventional loading bed, and FIG. 3 (B) is a cross-sectional view of an assembled state at a position along the line IIIB-IIIB in FIG. 3 (A). .

[Explanation of symbols]

 F chassis frame 1 main sill 11 upper end flange 3 sill cross 31 lower end flange 32 vertical wall 4 plate member 41 first plate member 42 second plate member (horizontal portion) 43 vertical wall (vertical portion) 5 floor member

Continued on the front page (72) Inventor Kunihiko Ishimoto 100 Kanayama, Ichiriyama-cho, Kariya-shi, Aichi Pref.

Claims (2)

[Claims] 1. A main sill is provided along left and right chassis frames extending in the front-rear direction of a vehicle, and a plurality of sill crosses having a hat-shaped cross section are provided on the left and right main sills so as to close their lower end openings. The main sill is made of a steel material having an inverted hat-shaped cross section in a vehicle carrier floor structure in which a bolt is fixed and installed via a plate member and a wooden floor member is mounted and fixed on a sill cloth.
The plate member, a vertical portion to be welded to the opposed vertical wall of the sill cloth, and a plate member having a horizontal portion that closes the lower end opening of the sill cloth and welds both ends to the lower flange of the sill cloth, A floor structure of a vehicle carrier, wherein a horizontal portion of the welded plate member is bolted and fixed to the main sill. 2. A first plate member for welding an oppositely facing vertical wall having a U-shaped cross section which opens upward to an inner surface of a vertical wall of the sill cloth;
A second plate member superposed on the bottom surface of the plate member and welding both ends to a lower end flange of the sill cloth, and both ends of the second plate member and a lower end flange of the sill cross are integrally formed on an upper end flange of the main sill. The floor structure of a vehicle carrier according to claim 1, wherein the vehicle carrier is fixed by bolts.