JPH0634221Y2 - Track liner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a truck liner that is mounted on a truck bed and protects the truck bed.

(Prior Art) A truck bed is designed with considerable strength according to its application. However, if the laminate is a hard amorphous material such as rock, scratches and dents are likely to occur, which causes corrosion of the track bed.

In addition, since the truck bed itself is made of steel, the load does not slip easily, and there is a problem that loading and unloading of luggage takes time. Therefore, a rubber or resin track liner mounted on a track bed has been proposed to solve these problems. Conventional track liners are box-shaped with three sides: the floor and the front and both sides, or a flat plate with only the floor, and mounting holes are provided on the floor or on the sides and attached to the track bed with screws, etc. It is what is done.

(Problems to be Solved by the Invention) The conventional track liner has a drawback that it may be abnormally deformed due to heat because it is integrally coupled to the track bed with a screw or the like.

In other words, it is not uncommon for trackbeds to be directly irradiated by the sun's rays in most cases, to reach a high temperature of around 80 ° C in summer, and to be rated in winter. At this time, since the material of the track liner is resin or rubber and the track bed is steel, there is a considerable difference in the amount of expansion and contraction due to the difference in the coefficient of thermal expansion.

However, since the floor portion and the like of the conventional track liner are integrally fixed by screws, the track liner partially floats at a high temperature due to the difference in the coefficient of thermal expansion, and a crack may occur at a low temperature.

Further, in the conventional track liner, it is necessary to make a hole in the track bed at the time of mounting, so that there is a problem that rust is generated from the hole.

Therefore, the present invention pays attention to such drawbacks of the prior art, and does not cause deformation such as unnatural rising and tearing even with a sudden change in ambient temperature. The purpose is to propose a track liner.

(Means for Solving the Problems) Accordingly, a feature of the present invention for achieving the above-mentioned object is to provide a truck having a front side liner disposed on the front side of the truck bed and a floor liner disposed on the floor. A liner, wherein the floor liner has at its ends a frame that abuts against three side surfaces of the track bed, and the vicinity of the lower end of the front side liner bulges rearward and is joined to the floor liner with the bulging portion. ing. A frame provided on a side portion of the track liner abuts on a side portion of the floor of the truck bed to regulate movement of the truck liner in the axial direction. The expansion and contraction in the longitudinal direction due to heat is absorbed by the frame sliding on the side surface of the track bed.

The variation of the connecting portion of the front side liner and the floor liner due to the amount of expansion and contraction of the entire circumference is absorbed by the bending deformation of the protruding portion of the front side liner, which is the second feature of the present invention.

(Example) Hereinafter, a specific example of the present invention will be described.

FIG. 1 is a perspective view of a track liner according to a specific embodiment of the present invention, and FIG. 2 is an enlarged view of a circle A portion of FIG.

In FIG. 1, (1) is a track liner in a specific embodiment of the present invention. This track liner (1) is mounted on a track bed of a so-called three-way open track, and includes only a front side liner (2) and a floor liner (3) mounted on the front side of the track bed. It has a protective liner on both sides and the rear.

The track liner of this embodiment is made of rubber, vinyl chloride resin, ABS resin, or the like, like the conventionally known track liner. Of the components of the track liner of this embodiment, the floor liner (3) is preferably a plate having a corrugated surface (not shown) on the surface thereof, and the rear end side surface and the left and right end side surfaces respectively have a track bed. Is provided with a wall-shaped frame (4) that abuts the side surface of the.

The frame (4) is partially provided with a notch (5) for preventing interference with the hinge of the side plate of the track bed. Further, the front end of the floor liner (1) is provided with a folded-back portion (6) upward. On the other hand, the front side liner (2) has an upper end formed in a key shape (7) so that the upper end of the front side of the truck bed can be fitted, and the lower end is provided with a rearward protruding portion (8) over the entire width. ing. And the floor liner (3) and front side liner (2)
The folded-back portion (6) of the floor liner (3) and the protruding portion (8) of the front side portion (2) are overlapped with each other and fastened together by screws (9). For mounting the track liner (1) of the present embodiment on the track bed, as for the floor liner (3), the frame (4) of the track liner (1) is placed outside the track bed through the gap between the floor and the side plate of the track bed. It comes out and contacts the side surface of the floor of the truck bed, while the folded-back portion (6) at the upper end of the front side liner (2) is fitted to the upper end of the truck bed. The track liner (1) can be mounted only by the structure in which the side of the floor of the track bed is pressed by the frame (4) as described above, and practically sufficient mounting strength is exhibited, but more preferably the frame at the rear end is used. Alternatively, the bonding strength can be further improved by fixing the periphery of the rear end corner (10) of the side frame to the track bed with a screw, an adhesive, a double-sided tape, a suction plate, or the like.

Although the means for connecting the front side liner and the floor liner has been disclosed in the above embodiments by means of bolts and nuts, the essence of the present invention is not limited to this, and it is also possible to use known means such as adhesive or welding. is there.

(Effect) In the track liner of the present invention, a frame is provided at the end of the floor liner, and the frame is fixed to the track bed with the frame sandwiching the side surface of the floor of the bed. Therefore, even if the floor liner expands and contracts due to heat, partial lifting does not occur.

Further, since the front side liner of the track liner and the floor liner are joined by the projecting portion, the projecting portion flexes when the liner expands and contracts due to heat, and the expansion and contraction of the track liner can be absorbed by the flexing of the part.

[Brief description of drawings]

FIG. 1 is a perspective view of a track liner according to a specific embodiment of the present invention, and FIG. 2 is an enlarged view of a circle A portion of FIG. (1) …… Track liner (2) …… Front side liner (3) …… Floor liner (4) …… Frame (5) …… Notch (6) …… Folded part (8) …… Protruding part (9) …… Screw (10) …… Corner

Claims (1)

[Scope of utility model registration request] 1. A truck liner having a front side liner disposed on a front side surface of a truck bed and a floor liner disposed on a floor surface, the floor liner having an end portion on three sides of the truck bed. A track liner, which has a frame that abuts, a front side liner near a lower end of the front liner, and the front liner is joined to the floor liner at the protruding portion.