JPS6230543Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air resistance reduction device for a freight vehicle.

When cargo vehicles are placed above the roof of the cab, the cargo on the rear deck acts as an air resistance as it travels, which affects fuel efficiency and other factors. Rectification is being carried out. There are two types of conventional baffle plates: a fixed type and an angle adjustable type, but the fixed type cannot respond to changes in the height of the load and cannot produce effective effects. On the other hand, the angle adjustable type can be adjusted to correspond to changes in the height of the package, but the angle adjustment involves changing the inclination angle of the current plate using the part attached to the roof as a fulcrum, and the adjustment operation is There was a problem that it was not easy to operate because it was done from the top.

Furthermore, Japanese Utility Model Application Publication No. 55-94250 discloses an air baffle plate attached to the front part of a roof carrier so as to be slidable in the front and back direction, but this one has a carrier for placing luggage on the roof. Since the air baffle plate is a main body, the amount of movement of the air baffle plate in the front and back direction is small, and therefore it cannot correspond to a wide range of changes in height of the package. Furthermore, since the air baffle plate is integrated with the roof rack, it also has the problem of increased weight.

In view of the above-mentioned conventional problems, the present invention makes it possible to greatly adjust the movement of the rectifying plate over the entire length in the front and rear directions on the roof, thereby obtaining effective air rectification in response to a wide range of height changes in the cargo configuration. , an air resistance reduction device that allows the rectifying plate to be retracted from the roof when the hood is removed from a vehicle with a flat body and causes air resistance, and allows easy adjustment of the rectifying plate. This is what we provide.

Embodiments of the present invention will be described below with reference to the drawings.
In FIGS. 1 to 3, 1 is the roof of the cab. Recesses 2 are formed on both sides of the roof 1 over the entire length in the front-rear direction, and guide rails 3 are fixed along the recesses 2. This guide rail 3 is suitably a C-type channel as shown in the figure, and
A rain gutter 4 is formed on the top surface to catch rainwater falling from both sides of the roof 1 and guide it to the pillar drip.

5 is a straightening plate having a constant upward angle,
On both sides of the plate, a support leg 6 is formed facing downward. The support leg 6 is guided by a guide pin 7 at the front and a clamp bolt 8 at the rear relative to the guide rail 3, and the plate 5 is attached to the roof 1. The clamp bolt 8 is a T-bolt, and has a T-shaped head 1
The head 10 is slidably engaged with the guide rail 3, and a nut 9 is screwed into the threaded portion so that the support leg 6 is fastened and fixed to the guide rail 3 by the nut 9. Also, at the rear end of the guide rail 3, the head 10 is designed to be removable from the guide rail 3.

According to the device of the present invention, when the nut 9 is loosened, the baffle plate 5 is guided by the guide rail 3 and is movable over the entire length in the front and rear directions on the roof 1. Therefore, as illustrated in FIG. 4, when the rear deck is loaded in the lowest position A, the rectifying plate 5 is positioned and fixed at the rearmost position of the roof 1, and when the loaded position is at an intermediate height B, is the center position of roof 1,
In the case of C, which is the tallest cargo, it is set at the forwardmost position of the roof 1, and the air rectification angle is changed according to the height of the cargo to perform a rational air-straightening action.

Furthermore, when the top is not used in the case of a flat body, as shown in FIG. By tilting the plate 5 backward and supporting it on the guard frame 11, it is retracted from the upper surface of the roof 1, thereby reducing air resistance due to the rectifying plate itself when unnecessary.

In this way, in this invention, the position of the rectifying plate is adjusted over the entire length of the cab roof in the front and rear direction, so it is possible to rectify the air flow to accommodate a wide range of height and low load positions. This has the advantage that the current plate can be retracted from above the roof when current rectification is not required, reducing air resistance due to the current plate itself. In addition, the position of the current plate can be easily adjusted by reaching out from the side window rather than inside the cab, and the guide rail also serves as a rain gutter, making effective use of a single part that has two uses. It has the following advantages.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the present invention, Figure 2 is Figure 1-
3 is a cross-sectional view taken along lines taken from FIG. 1, FIGS. 4A, B, and C are explanatory views of the present invention in use, and FIG. 5 is a side view of the present invention when not in use. 1... Roof, 3... Guide rail, 4... Rain gutter, 5... Current plate, 6... Support leg, 7... Guide pin, 8... Clamp bolt, 9... Nut.

Claims (1)

[Claims for Utility Model Registration] (1) Guide rails are provided along the entire length of both sides of the roof of the cab in the front-rear direction, support legs are formed on both sides of a rectifying plate that rectifies the air flow, and the support legs are connected to the guide rails. The front side of the rail is guided by a guide pin and the rear side is guided by a clamp bolt, and the rectifying plate is displayed on the cab roof so that its position can be adjusted back and forth.
An air resistance reduction device characterized in that a rectifying plate is tilted backward using the guide pin as a fulcrum at the rear end of a guide rail so that it can be retracted from above the roof. (2) The air resistance reduction device according to claim 1 of the utility model registration claim, in which a rain gutter is formed on the upper surface of the guide rail.