JPH0644775Y2 - Drag foyer structure - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention is mounted on the cabin roof of a truck equipped with a van, and has a substantially triangular shape on both side surfaces to generate airflow during traveling. The present invention relates to a drag foiler that guides an inclined surface along the width direction to generate an extremely smooth backward flow, and particularly relates to improvement of its internal structure.

(Prior Art) Trucks equipped with so-called vans, which have a relatively small vertical dimension and are used to store and protect cargo by forming a closed rectangular parallelepiped storage chamber instead of a loading platform that loads cargo open, are often used. . In order to secure the maximum loading capacity of the van with the maximum allowable height dimension defined by the standard, the upper end portion of the van usually protrudes higher than the roof portion of the truck.

By the way, since the car runs on the road surface with tires, it is hardly affected by wind during low speed running,
When traveling at high speeds, the effect of wind is so great that it cannot be ignored. That is, there is an adverse effect that steering resistance and driving force are reduced from the place where the air resistance becomes large and the lift acts on the entire vehicle body to weaken the grounding property of the wheels.

It is known that the air resistance received from the front when a vehicle runs increases with the vehicle body shape, mainly the square of the silhouette area viewed from the front which is the front projected area and the traveling speed. Since the front projection area of the truck itself is huge, it is susceptible to air resistance,
C _D value (air efficiency coefficient) is extremely high compared to other vehicle models. Further, when the truck is equipped with a van, as described above, since it projects higher than the roof portion and has a rectangular parallelepiped shape, the front projection area increases and the air resistance increases by the square of the area.

Naturally, the fuel consumption will decrease, and the profit will be affected to a considerable extent by a transportation specialist who owns a large number of trucks.

Therefore, in particular, a drag foirer has been installed which minimizes the air resistance received from the roof portion to the upper end portion of the front surface of the van to generate an extremely smooth backward flow. This drag foyer has a substantially triangular shape on both side surfaces so as to eliminate a step between the roof portion and the upper end of the van, and is composed of a single plate body connecting the both side surface portions with slope portions along the width direction of the roof portion. From the viewpoint of weight reduction and rigidity retention, for example, an FRP material is used, the bottom surface and the back surface are open, and when viewed from the rear, they are formed in an inverted U shape.

The air flow generated during traveling flows from the upper end of the windshield, which is the front surface of the cabin, directly along the slope of the drag foyer. It does not collide with the roof part and the front end face of the van protruding from the roof part, and a smooth backward flow is obtained. Therefore, the air resistance is remarkably reduced, and C _D
Value reduction can be obtained, which contributes to improved fuel efficiency.

Conventionally, as shown in FIGS. 7 to 9, a drag foirer is attached to a roof portion. That is, FIG. 7 shows the drag foyer Fa as a perspective view, in which both side surface portions 1, 1 have a substantially triangular shape, and a plurality of side surface portions 1, 1 and a plurality of slope portions 2 along the width direction are provided on the inner surface side. The horizontal reinforcing bars 3 ... Are provided. Then, a pair of left and right vertical reinforcing bars are provided on the slope portion 2 in the front-rear direction so as to intersect these horizontal reinforcing bars 3.
4,4 are provided. Front mounting brackets 5, 5 and rear mounting brackets 6, 6 are provided at a pair of left and right parts where the horizontal reinforcing bars 3 and the vertical reinforcing bars 4, 4 intersect and at a pair of front and rear parts. As shown in FIG. 8, the front mounting member 5 is mounted so that plate pieces having an L-shaped cross section are placed back to back, so to speak, and a mounting hole 5a is provided at the mating portion.
The rear mounting member 6 is a plate piece bent in an inverted U shape,
Both of the opposing pieces project from the mounting portion, and mounting holes 6a, 6a are provided in the both pieces. On the other hand, on the roof of the truck (not shown), there is a certain distance in the front and back,
In addition, front and rear frames 7 and 8 are laid across the width direction.
That is, the left and right ends of the front and rear frames 7, 8 are attached and fixed to the roof portion via the hooks 9 ... Which are fixed to the side portions of the roof portion. In addition, front and rear frames 7,8
A pair of left and right receiving frames 10, 10 are installed over the entire length.
These receiving frames 10, 10 are formed in a substantially U-shaped cross section, and a plurality of through holes 11 ... Which are opposed to each other at a predetermined interval are formed in both pieces 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 mounting portions 12a, 12a made of hollow pipes are fixed to both upper and lower ends thereof by welding or the like. The mounting portion 12a on the lower side is inserted between both pieces of the receiving frame 10 and then mounted and fixed via a fixture not shown. The mounting portion 12a on the upper side is inserted between both pieces of the rear mounting bracket 6 and then fixed by a fixing tool (not shown). Further, a pair of receiving metal fittings 13, 13 are provided at predetermined left and right positions of the front frame 7, and the front mounting metal fitting 5 is attached and fixed thereto through a fixture not shown.

Therefore, the front mounting bracket 5 of the drag foyer Fa is mounted on the roof part via the receiving bracket 13 and the front frame 7, and the rear mounting bracket 6 is mounted on the variable stay 12 and the receiving frame 10 and the rear frame 8. Installed on the roof. In other words, drag the Huila Fa to the roof.
Is securely attached and fixed, and by appropriately changing the position of the mounting portion 12a at the lower end of the variable stay 12 with respect to the through hole 11 of the variable frame 12, the slope of the slope portion 2 of the drag foyer Fa is changed. That is, even if the height of the van is different, the drag flower Fa is adjusted in accordance with the height of the van B so that the airflow flowing along the slope 2 of the drag foyer Fa does not collide with the front end face of the van. By changing the inclination of the slope portion 2, the height dimension of the rear upper end can be adjusted appropriately.

(Problems to be solved by the invention) In this way, the drag foyer Fa is attached to the roof portion, and the inclination of the slope portion 2 can be adjusted. Since many parts such as metal fittings must be manufactured and prepared and mounted at a predetermined place, workability is extremely poor. Then, as shown in FIG. 9, the variable stay 12 which is a member for adjusting the slope of the slope 2 is used.
Since it is located in the approximate center in the width direction, it is very troublesome to adjust the inclination again with the van already attached, and since many parts are scattered inside the drag foyer Fa, This internal space cannot be used as storage air.

The present invention has been made in view of the above circumstances, and the number of parts for attaching the drag foir to the roof part is reduced to the necessary minimum to facilitate the assembly work and the slope adjustment work of the slope part. Moreover, it is an object of the present invention to provide a drag foirer structure in which the inside can be used as a storage space and the rigidity of the drag foyer can be improved by the storage space portion.

[Constitution of device]

(Means and Actions for Solving the Problem) The present invention is mounted on a cabin roof of a truck equipped with a van, and has both side surfaces having a substantially triangular shape, and an air flow accompanying traveling is formed on a slope portion along the width direction thereof. A drag foiler that guides and produces an extremely smooth backward flow, in which a pair of front and rear support fittings are erected on both sides of the roof part, and the front and rear support fittings are provided on the inner surfaces of both side surfaces of the drag foyer. Attach a pair of front and rear mounting brackets at the same interval, and fasten the front and rear support brackets and front and rear mounting brackets with fixing tools to mount and fix the drag foirer to the cabin roof. A storage box is bridged between the inner side surfaces of the drag foyers between the metal fittings, and the opening of this storage box is provided on at least one side of the drag foyer and opened / closed by an opening / closing door. It is a drag-foiler structure characterized by being flexible.

Since a pair of front and rear mounting brackets mounted on the inner surfaces of both side surfaces of the drag foyer are mounted and fixed to the pair of front and rear supporting brackets that are erected on both sides of the roof part through a fixture. The number of parts required is small, and both the inner and outer surfaces of both sides of the drag foyers can be installed and the inclination can be adjusted, making the work easier. Further, the storage box is bridged between the inner surfaces of the both side surface portions of the drag foiler between the front and rear mounting brackets to make effective use of the inside and to improve the rigidity of the drag foiler.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a drag foir F is mounted on the roof portion R of the truck as described later. A van B is provided behind the drag foyer F as in the conventional case. The drag foyer F is, for example, an integrally molded product in which both side surface portions 1 and 1 are formed in a substantially triangular shape by using an FRP material and these side surface portions 1 and 1 are connected by a slope portion 2 along the width direction. It is the same as in the prior art that lateral reinforcing bars 3, 3 and vertical reinforcing bars (not shown) are provided at predetermined positions on the inner surface for reinforcement.

The drag foyer F will be explained. Reference numeral 20 ... is a pair of front and rear retaining metal fittings which are engaged and fixed to both side portions of the roof portion R. The front supporting metal fitting 21 is on the front side and the rear supporting metal fitting is on the rear side. 22 is installed. A pair of front and rear mounting brackets 23, 24 are provided at predetermined positions on the inner surfaces of both side surfaces 1, 1 of the drag foyer F. Front and rear support brackets 21,22
The mutual spacing of the same is the same as that of the front and rear mounting brackets 23, 24. The front mounting bracket 23 has a front mounting bracket 23, and the rear supporting bracket 22 has a rear mounting bracket 24.
, Respectively, are attached and fixed by the rear of the fixture 2.

As shown in FIG. 6, the front support fitting 21 is provided with a perfect circular through hole 26 and a substantially arcuate elongated hole 27 in the front-rear direction at a predetermined interval in the vertical direction. Here, the upper side is the elongated hole 27 and the lower side is the through hole 26. A pair of perfect circular through holes 28 and 29 and long holes 30 and 31 which are long in the front-rear direction are alternately formed in the rear support metal member 22 at predetermined intervals in the vertical direction. Here, the uppermost stage is the long hole 31, the lower part thereof is the through hole 29, and the long hole 30 and the through hole 28 are provided below with a predetermined interval. The front and rear mounting brackets 23, 24 are provided with mounting holes not shown here.
There are a pair of upper and lower mounting holes, and the vertical spacing between them is
The through holes and the long holes 26 to 31 provided in the front and rear support fittings 21 and 22 have the same vertical intervals. Then, nuts are fixed to the upper and lower attachment fittings 23 and 24 so as to communicate with the attachment holes, and the fixing tool 25 is configured with bolts inserted from the front and rear support attachments 21 and 22.

As shown in FIG. 4, a front mounting member 23 is attached and fixed to the front supporting member 21 via a pair of upper and lower fixing members 25, 25. As shown in FIG. 5, a rear mounting member 24 is attached and fixed to the rear supporting member 22 via a pair of upper and lower fixing members 25, 25. Eventually, the drag foyer F is attached and fixed to the roof portion R via these metal fittings. And, as shown in FIG. 3, in this state, the inner space of the drag foyer F does not exist at all except the inner surfaces of both sides, and therefore, an extremely large working space is secured, and if necessary, something is required. It can be used as a storage space.

As shown in FIG. 1 again, on one side surface portion 1 of the drag foyer F and between the front and rear mounting brackets 23, 24,
An opening / closing door 31 is provided. That is, the opening / closing door 31 has a front end edge that is openably and closably fitted to the side surface portion via hinges 32, 32, and a knob 33 for opening / closing operation and locking operation protrudes from the rear end portion. As shown in FIGS. 2 and 3, the opening / closing door 31 opens / closes the opening 34 a of the storage box 34. The storage box 34 has an opening 34a only on one side surface portion 1 here, and its peripheral flange portion 35 is fixed to the inner surface of the side surface portion 1 by appropriate means. Then, it is extended in the width direction of the drag foiler F, and its end portion is fixed to the inner surface of the other side surface portion 1 by appropriate means. Even at this extension side end, it is interposed between the front and rear end fittings 23, 24. That is, the storage box 34 is bridged between the inner surfaces of the both side surfaces 1, 1 of the drag foyer F.

Then, as shown in FIG. 1, the airflow generated along with the traveling is smoothly guided along the inclined portion of the drag fueler F, and changes into a backward flow having a very small air resistance. Therefore, the fact that the C _D value decreases and the aerodynamic characteristics improve, leading to improved fuel economy, is no different from the conventional one.

When the vans B having different heights are equipped, the slope of the slope portion 2 of the drag foyer F must be adjusted. That is, the fixtures 25, 25 that connect the front support metal fitting 21 and the front attachment metal fitting 23 are temporarily loosened, and the fixtures 25, 2 that connect the rear support metal fitting 22 and the rear attachment metal fitting 24.
5 is removed. Then, the drag filler F is tilted to the required state, and the front and rear support fittings 21, 22 and the front and rear fittings 23, 24 are connected and fixed again.

As shown in FIG. 6 again, when the lowermost through hole 28 of the rear support fitting 22 and the upper long hole 30 are used for the through hole 26 and the long hole 27 of the front support fitting 21, that is, When the fixture 25 is inserted through the hole shown as "first step" in the figure, the lower end edge of the drag foyer F is substantially horizontal, and the slope of the slope portion 2 is the gentlest. . In other words, it is used when the van B having the smallest height is equipped.

When the van B having a height higher than this is installed, the rear support metal fitting 22 uses a hole described as "second step" in the figure in order to increase the inclination of the slope portion 2. That is, the long hole 30 on the upper side of the "first stage" and the through hole 29 on the upper side. Since the drag foirer F is slightly tilted, the front and rear mounting members 23, 24 integrally provided here and the mounting holes formed therein are also tilted. Front support bracket 21
The long hole 27 of becomes a clearance hole when the front mounting bracket 23 is mounted with the fixture 25, and the long hole 30 of the rear supporting bracket 22 is
It serves as an escape hole when mounting the rear mounting bracket 24 with the fixture 25.

Similarly, when the van B having a height higher than this is installed, the rear support fitting 22 has a through hole 29 shown as "third step" in the drawing in order to further increase the inclination of the slope portion 2.
And the long hole 31 is used. That is, the through hole 29 on the upper side of the "second step" and the elongated hole 31 on the upper side. Drag Huila F
Is further inclined, the front and rear attachment fittings 23 integrally provided here and the attachment holes drilled are also inclined. The long hole 27 of the front support bracket 21 serves as a clearance hole when the front mounting bracket 23 is mounted with the fixture 25, and the long hole 31 of the rear support bracket 22 is used when the rear mounting bracket 24 is mounted with the fixture 25. It becomes an escape hole.

In this way, the slope of the slope portion 2 of the drag foyer F can be adjusted, and here, the van B can be mounted corresponding to the three height levels. Moreover, since all of the work can be performed on the inner surface side of both side surface portions 1, 1 of the drag foyer F, the work is easy.

To store any object to be stored in the storage box 34, the opening / closing door 31 may be opened. This storage space is extremely large because it has a capacity between the front and rear mounting brackets 23, 24 and across the width of the drag foyer F, and is reliably shielded from wind and rain. Moreover, the storage box 34 is placed inside the drag foyer F, and both side surfaces of the foyer 1,
Since the storage box 34 is installed horizontally between the two, the storage box 34 improves the rigidity of the drag foirer F itself and satisfactorily suppresses vibrations and swaying that may occur.

The opening / closing door 31 is not limited to being provided on one side surface portion 1 of the drag foyer F, and both side surface portions may be provided.
Of course, it may be provided in 1,1.

[Effect of device]

As described above, according to the present invention, there are very few parts for attaching the drag foirer to the roof portion,
The installation work of the drag foyers and the adjustment work for the slope of the slope can be facilitated, and since the internal space is expanded sufficiently, it can be effectively used as a storage space.
The storage box that secures this storage space improves the rigidity of the drag foyer, and exerts effects such as good suppression of vibrations and swaying that occur.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a side view of the entire mounting structure of a drag foirer, FIG. 2 is a partially longitudinal front view thereof, and FIG. A cross-sectional plan view of a part of a certain storage box, FIG. 4 is a side view of the main part of the attachment structure of the drag foirer, and FIG. 5 is a side view of the main part of the attachment structure of the drag foirer different from FIG. FIG. 6 is a front view of the front and rear support fittings, which are essential parts, FIGS. 7 to 9 show a conventional example of the present invention, FIG. 7 is a perspective view of a drag foiler, and FIG. 8 is a drag foil. Fig. 9 is an exploded perspective view of a mounting structure component of the oiler, and Fig. 9 is a partially longitudinal front view of the drag fuel mounting structure. B ... Van, R ... Roof part, F ... Drag Huila, 21 ...
Front support bracket, 22 ... Rear support bracket, 23 ... Front mounting bracket, 24 ... Rear mounting bracket, 25 ... Fixing fixture, 31 ... Opening door, 34
a ... opening, 34 ... storage box.

Continuation of the front page (56) References 60-52155 (JP, U) actual 56-59449 (JP, U) actual 56-27153 (JP, U) actual 56-150683 (JP) , U) Actual opening 60-84487 (JP, U) Actual opening 57-79082 (JP, U) Actual opening 63-40288 (JP, U) Actual opening 62-181478 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A van-equipped truck is mounted on a cabin roof portion, and both side portions have a substantially triangular shape and guides an air flow during traveling to a slope portion along the width direction to generate an extremely smooth backward flow. A pair of front and rear support fittings that are erected on both sides of the roof part and front and rear parts that are attached to the inner surfaces of both side surfaces of the drag foyer at the same intervals as the front and rear support fittings. A pair of mounting brackets, a fastener for fastening and securing the front and rear mounting brackets and front and rear mounting brackets to the cabin roof, and a drag filler between the front and rear mounting brackets. A storage box which is bridged between the inner surfaces of both side surfaces and has at least one side surface of the drag foyer having an opening opened and closed by an opening / closing door. Ggufuoira structure.