JPH03182885A - Mounting structure for drag foiler - Google Patents

Abstract

PURPOSE:To facilitate assembling works and slant degree adjustment, by providing paired front and rear support fittings, each of which is furnished with a round hole and a longitudinally oblong hole by a specified vertical space, for both sides of a roof, and thereby fixing the mount fittings of a drag foiler by making use of the respective holes, in a mounting structure for a drag foiler of a truck equipped with a van. CONSTITUTION:Paired front fitting 21 and rear fitting 22 are provided for both sides of a roof section R. And both a round through hole 26 and an oblong hole 27 long in the longitudinal direction, are bored in the front support fitting 21. In addition, both round holes 28 and 29 and oblong holes 30 and 31 are formed in the rear support fitting 22 with the same space maintained as that between the through hole 26 and the oblong hole 27 of the front support fitting 21 as shown in the figure. And paired right and left fittings each of which is composed of the front and rear support fittings 23 and 24, are provided for a drag foiler F in such a way as to match the those fittings 21 and 22 to that they are fixed onto the support fittings by fastening fixtures. In this case, slant degree is adjusted by changing the combination of the through holes 21, 28 and 29 and the oblong holes 27, 30 and 31. This thereby facilitates assembling works and slant degree adjustment.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Field of Application) The present invention is a truck that is attached to the cabin roof of a truck equipped with a van, and has substantially triangular side surfaces to reduce airflow as the vehicle travels. The installation of the drag oiler, which guides the drag oiler along the slope along its width to produce an extremely smooth rear flow, relates to an improvement in the structure.

(Prior art) Trucks equipped with so-called vans, which have relatively small vertical dimensions and have a rectangular parallelepiped-shaped sealed storage chamber to store and protect the cargo, are often used instead of loading platforms that open the cargo. . The top end of the van typically protrudes higher than the roof of the truck in order to ensure maximum payload with the maximum allowable height dimension defined by standards.

By the way, since cars run in contact with the road surface through their tires, they are hardly affected by the wind while driving at low speeds.
When driving at high speeds, the effect of the wind is so large that it cannot be ignored. That is, air resistance becomes large, and lift force acts on the entire vehicle body, weakening the ground contact of the wheels, which has the negative effect of reducing steering performance and driving force.

It is known that the air resistance that a car receives from the front when it is running increases depending on the shape of the car body, mainly the silhouette area seen from the front which is the projected area of the front, and the square of the running speed.

Since the truck itself has a huge frontal projected area, it is easily affected by air resistance, and its CD value (coefficient of air drag) is extremely high compared to other vehicle types. Furthermore, when a van is installed on a truck, since it protrudes higher than the roof and has a rectangular parallelepiped shape, as described above, the front projected area increases and air resistance increases by the square of the van.

Naturally, fuel efficiency will decrease, which will have a considerable impact on profits for transport specialists who own a large number of trucks.

Therefore, drag foilers have been installed that reduce air resistance as much as possible, especially from the roof to the upper front end of the van, creating an extremely smooth rearward flow. This drag oiler is made up of a single plate whose both sides are substantially triangular to eliminate the level difference between the roof and the top of the van, and which are connected by a sloped surface along the width direction of the roof. In order to reduce weight and maintain rigidity, for example, FRP material is used, and the bottom and back surfaces thereof are open and formed into an inverted U-shape when viewed from the rear.

Airflow generated as the vehicle travels flows directly along the slope of the drag oiler from the upper end of the windshield, which is the front surface of the cabin. It does not collide with the roof part or the front end surface of the van that protrudes from the roof part, resulting in a smooth backward flow. Therefore, air resistance becomes much smaller and C
A reduction in the D value can be obtained, contributing to improved fuel efficiency.

Conventionally, a drag oiler is attached to a roof portion, as shown in FIGS. 8 to 10. That is, FIG. 8 shows the drag foiler Fa as a perspective view, with both side parts 1
, 1 have a substantially triangular shape, and a plurality of horizontal reinforcing bars 3 are provided over the inner surfaces of both side surfaces 1, 1 and the slope portion 2 along the width direction. And these horizontal reinforcement bars 3・
A pair of left and right vertical reinforcing beams 4, 4 are provided on the slope portion 2 in the front-rear direction so as to intersect with.... In the pair of left and right parts where these horizontal reinforcing bars 3... and the vertical reinforcing bars 4, 4 intersect, and in the pair of front and rear parts, metal fittings 5.5 are used for front mounting and metal fittings 6, 6 are used for rear mounting. is provided. As shown in FIG. 9, the metal fitting 5 is mounted on the front side by stacking plate pieces each having an angular cross-section back to back, and a mounting hole 5a is provided in the mating portion. For rear mounting, the metal fitting 6 is a plate piece that is bent into an inverted U shape, and both opposing pieces thereof protrude from the mounting part, and both pieces have holes 6a for mounting.
6a is provided. On the other hand, front and rear frames 7.8 are installed on the roof portion of the truck (not shown here) at a predetermined distance from the front and rear and extending in the width direction.

That is, the left and right ends of these front and rear frames 7.8 are
It is attached and fixed to the roof part via a hook 9 that is hooked and fixed to the side part of the roof part. Further, a pair of left and right receiver frames 10.10 are installed across the front and rear frames 7.8. The frames 10 and 10 of these receivers have a cross section of approximately U.
It is formed in a letter shape, and a plurality of through holes 11 facing each other at a predetermined interval are bored in both pieces particularly near the rear end. A fixing tool (not shown) for attaching and fixing the variable stay 12 is inserted into the predetermined through hole 11 . The variable stay 12 is a rod-shaped body having a predetermined length, and has mounting portions 12a formed of hollow vibrators at both upper and lower ends thereof.

12a is fixed by means such as welding. The mounting portion 12a on the lower side is inserted between the two halves of the frame 10, and is fixed via a fixture (not shown).

The upper mounting part 12a is inserted between the two pieces of the metal fitting 6 for the rear mounting, and the mounting is fixed with a fixture (not shown). Further, a pair of metal fittings 13 and 13 are provided at predetermined positions on the left and right sides of the front frame 7, and the metal fittings 5 are fixed thereto via fixing devices (not shown).

Therefore, when the drag oiler Fa is mounted on the front side, the metal fitting 5 and the receiver are attached to the roof part via the metal fitting 13 and the front frame 7, and when the drag oiler Fa is installed on the rear side, the metal fitting 6 is attached to the variable stay 12 and the receiver is attached to the frame 10 and the rear side. It is attached to the roof part via the frame 8.

In other words, the drag oiler Fa is securely attached to the roof part, and the lower end of the variable stay 12 is attached to the receiving part 12a by appropriately changing the position relative to the through hole 11 of the frame 10. The slope of the slope portion 2 of the foiler Fa changes. In other words, even if the height dimension of the van is different, the drag foiler is adjusted to match the height dimension of the tongue B so that the airflow flowing along the slope part 2 of the drag foiler Fa does not collide with the front end surface of the van. By changing the inclination of the slope portion 2 of Fa, the height dimension of the rear upper end can be adjusted as appropriate.

(Problem to be Solved by the Invention) In this way, the drag oiler Fa is attached to the roof part, and the slope of the slope part 2 can be adjusted. A large number of parts, such as metal fittings, must be prepared and installed in designated locations, resulting in very poor workability. As shown in FIG. 10, the variable stay 12, which is a member for adjusting the slope of the slope section 2, is located approximately at the center in the width direction, so the slope can be adjusted again with the van already attached. It is very troublesome to make eggplants.

The present invention has been made in view of the above-mentioned circumstances, and aims to simplify the assembly work by reducing the number of parts for attaching the drag oiler to the roof part to the necessary minimum, and also to reduce the slope of the slope part. The purpose of the drag oiler installation is to provide structure in an easily adjustable configuration.

[Structure of the invention]

(Means and Effects for Solving the Problems) The present invention is attached to the cabin roof of a truck equipped with a van, and has substantially triangular side surfaces, and directs the airflow caused by the vehicle to a sloped surface along the width direction of the truck. It is a drag oiler that guides and produces an extremely smooth backward flow.A pair of front and rear support fittings are installed upright on both sides of the roof part, and the front support fittings are vertically spaced at a predetermined interval to create a very smooth rear flow. circular through holes and elongated holes that are long in the front-rear direction, and circular through holes and elongated holes that are long in the front-rear direction are alternately bored at predetermined intervals in the vertical direction in the rear support metal fitting; A pair of front and rear mounting brackets are attached to the inner surfaces of both side surfaces of the drag oiler at the same interval as the front and rear support brackets, and these front and rear mounting brackets are connected to the through holes provided in the front and rear support brackets. To install a pair of upper and lower holes with the same spacing as the vertical distance between the holes, holes are drilled, and fixing tools are inserted into the holes, the above-mentioned through holes, and the elongated holes, respectively, and the front and rear support brackets and the front and rear The installation structure of the drag oiler is characterized in that the drag oiler is fixed to the cabin roof by fastening the respective metal fittings.

In contrast to the pair of front and rear support fittings installed on both sides of the roof section, the front and rear pair of support fittings installed on the inner surfaces of both side surfaces of the drag oiler are fixed through fixing devices. Therefore, the number of parts required is small, and the installation work and slope adjustment work can be performed on the inner surfaces of both side surfaces of the drag oiler, and the space between them remains as a work space, making the work easier.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, a drag oiler F is mounted on the roof section of the truck as will be described later. A bun B is provided behind the drag oiler F, as in the prior art. Further, the drag oiler F is made of, for example, FRP material, and both side portions 1
, 1 has a substantially triangular shape, and is an integrally molded product in which both side parts 1, 1 are connected by a slope part 2 along the width direction. As in the conventional case, reinforcement is provided by providing horizontal reinforcing bars 3.3 and vertical reinforcing bars (not shown) at predetermined positions on the inner surface.

0 Next, to explain the structure of the installation of the drag oiler F, 20... is a pair of front and rear latch fittings that are hooked and fixed to both sides of the roof part R, and a front support fitting 21 is attached to the front side of the latch fittings. However, a rear support fitting 22 is attached to the rear side. At predetermined positions on the inner surfaces of both side surfaces 1, 1 of the drag oiler F, metal fittings 23 and 24 are provided for mounting the front and rear pairs.

As shown in Figure 7, these front and rear attachments are made using metal fittings 23.2
4 has flanges at both ends fixed to the inner surface of the drag foiler F, and is inserted into the constituent members of the horizontal reinforcing beam 3, thereby increasing the strength of the attachment. The flanges protrude toward the inner surface, and a pair of mounting holes (not shown) are formed vertically at a predetermined interval, and these mounting holes form a fixture 25 on the back side that communicates with the holes. The nut 25a is fixed in advance. The above-mentioned fixing device 25 includes the front and rear support fittings 2
1.22 is fixed to the front and rear fittings 23.24, and consists of the above-mentioned nuts 25a and bolts 25b.

That is, as shown in FIGS. 1 and 2 again, the mutual spacing between the front and rear support fittings 21 and 22 is the same as that of the front and rear mounting fittings 23 and 24.

The front support metal fitting 21 has a metal fitting 23 for front mounting.
A metal fitting 24 is attached to the rear support fitting 22, and the fittings 24 are fixedly attached to the rear support fitting 22 by the above-mentioned fixtures 25, respectively.

As shown in FIG. 4, the front support fitting 21 is provided with a circular through hole 26 at a predetermined interval in the vertical direction and a substantially arcuate elongated hole 27 in the front and back direction. Here, the upper side or long hole 2
7, and the lower side is the through hole 26. Rear support bracket 22
There are a pair of perfectly circular through holes 28 and 29 at a predetermined interval in the vertical direction, and a long hole 30 that is long in the front and back direction.
31 are drilled alternately. Here, the top row is long hole 3.
1, the lower part thereof is a through hole 29, and furthermore, a long hole 30 and a through hole 28 are provided at a predetermined interval below. In addition, the vertical spacing of the mounting holes provided in the front and rear mounting brackets 23.24 is the same as the vertical spacing of the through holes and elongated holes 26 to 31, respectively, provided in the front and rear support brackets 21.22. 2. Needless to say.

As shown in FIG. 5, the front support metal fitting 21 is fixed to the front metal fitting 23 via a pair of upper and lower fixing devices 25.25. As shown in FIG. 6, the rear mounting bracket 24 is fixed to the rear support bracket 22 via a pair of upper and lower fixtures 25 and 25. In the end, the drag oiler F is attached and fixed to the roof portion R via these metal fittings.

As shown in Fig. 3, in this state, the interior space of the drag oiler F is completely empty except for the inner surfaces of both sides, so an extremely large working space is secured, and if necessary, It can be used as a storage space.

As shown in FIG. 1 again, the airflow generated as the vehicle travels is smoothly guided along the slope portion 2 of the drag oiler F and turns into a backward flow with extremely low air resistance. Therefore, the fact that the CD value is reduced and the aerodynamic characteristics are improved, leading to improved fuel efficiency, is no different from the conventional one.

If the van B is equipped with a van B having different height dimensions, the slope of the slope portion 2 of the drag oiler F must be adjusted. That is, the front support fitting 21
For front mounting, the fixtures 25.25 connecting the metal fittings 23 are loosened, and the fixtures 25.25 for connecting the rear support metal fittings 22 and the rear mounting metal fittings 24 are removed. Then, the drag oiler F is tilted to the required state, and the front and rear support fittings 21 and 22 and the front and rear mounting fittings 23 and 24 are connected and fixed again.

As shown again in FIG. 4, the through hole 26 of the front support fitting 21
The through hole 2 at the bottom of the rear support fitting 22 with respect to the elongated hole 27
8 and the elongated hole 30 at the top thereof, that is, when the fixing tool 25 is inserted into the hole marked as "first stage" in the figure, the lower edge of the drag foiler F is approximately horizontal. , the slope portion 2 has the gentlest slope.

In other words, it is used when the van B with the smallest height dimension is installed.

When a van B with a higher height dimension than this is installed, in order to increase the slope of the slope portion 2, the rear support 4 and the holder 22 use holes marked as "second stage" in the figure. That is, the long hole 30 on the upper side of the "first stage" and the through hole 2 above it. Since the drag oiler F is in a slightly inclined state, the front and rear mounting holes A23, 24 and the mounting holes drilled here are also inclined. The long hole 27 of the front support metal fitting 21 serves as an escape hole when the metal fitting 23 is attached to the front part with the fixture 25.
The long hole 30 of the rear support fitting 22 is connected to the rear support fitting 22.
This hole serves as an escape hole when attaching 4 with the fixture 25.

Similarly, when a van B with an even higher height dimension is installed, in order to further increase the inclination of the slope portion 2, the rear support bracket 22 is installed at a through-hole 29 shown as the "third stage" in the figure. and a long hole 31 are used.

That is, the two through holes on the upper side of the "second stage" and the elongated hole 31 on the upper side. Since the drag oiler F is further tilted, the front and rear mounting fittings 23 and the mounting holes formed therein are also tilted. The long hole 27 of the front support fitting 21 is.

For front mounting, the metal fitting 23 is used as an escape hole when the fixture 25 is installed, and the long hole 3 of the rear support metal fitting 22 is used as an escape hole when the metal fitting 24 is installed using the fixture 25 for rear installation.

In this way, it is possible to adjust the inclination of the slope portion 2 of the drag oiler F, and here it is possible to mount the drag foiler F in accordance with the three height dimensions of the nokun B.

Moreover, as mentioned above, the work space is wide, so it is easy to work.

〔Effect of the invention〕

As explained above, according to the present invention, the number of parts required for attaching the drag oiler to the roof portion is extremely small, and only the space on the inner surface of both side surfaces of the drag oiler is required. The installation of a drag oiler can provide a structure that facilitates work and adjustment work for the inclination of the slope.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is a side view of the entire structure showing the installation of the drag oiler, FIG. 2 is an exploded perspective view of its components, and 6 FIG. 3 Figure 4 is a front view of the front and rear support brackets, which are the main parts, Figure 5 is a side view of the main structure, and Figure 6 shows the installation of the drag oiler. 5 shows the installation of the drag oiler at a different location from that shown in FIG. 5. FIG. 8 is a transparent perspective view of a drag oiler, FIG. 9 is an exploded perspective view of structural parts showing how the drag oiler is attached, and FIG. 10 is a part of the structure where the drug oiler is attached. FIG. B... Van, R... Roof part, 1... Side part, 2
...Slope portion, 21...Front support metal fitting, 26...Through hole, 27...Long hole, 22...Rear support metal fitting, 28.
29...Through hole, 30.31...Long hole, 23...Front mounting is metal fitting, 24...Rear mounting is metal fitting, 25...
Fixture.

Claims (1)

[Claims] This device is attached to the cabin roof of a truck equipped with a van, and has substantially triangular side surfaces and guides the airflow that accompanies the vehicle to the sloped portion along the width of the truck, thereby creating an extremely smooth backward flow. The drag oiler is a drag oiler that is made up of a pair of front and rear support fittings erected on both sides of the roof part, and a perfectly circular transparent hole bored vertically at a predetermined interval in the front support fittings. A hole and a long hole that is long in the front and back direction, a perfectly circular through hole and a long hole that is long in the front and back direction that are alternately bored at a predetermined interval in the vertical direction in the rear support metal fitting, and both sides of the drag oiler. a pair of front and rear mounting brackets that are attached to the inner surface of the surface part with the same spacing as the front and rear support brackets;
A pair of upper and lower mounting holes are formed in these front and rear mounting brackets and have the same vertical spacing as the vertical spacing between the through hole and the long hole provided in the front and rear support bracket, and these mounting holes and the through hole and the long hole are connected to each other. A drag oiler mounting structure comprising: a fixing tool inserted into each of the parts, and fastening the front and rear support fittings and the front and rear mounting fittings respectively to attach and fix the drag oiler to a cabin roof part.