DE2806370A1 - DEVICE FOR REDUCING THE AIR RESISTANCE OF DELIVERIES AND TRUCKS - Google Patents

Description

The invention relates to a device for reducing the Air resistance of delivery vans and trucks whose superstructures are higher than the driver's cab.

The invention is based on the object of such a device to create, which can be produced without great design effort, problem-free on the differently trained Cab roofs can be mounted and adjusted, and ensures a noticeable reduction in vehicle aerodynamic drag.

This object is achieved according to the invention by the features specified in the characterizing part of the main claim.

The advantages achieved by the invention are that either the driving speed with the same fuel consumption, increased or the fuel consumption, with the usual speed can be lowered and driving stability is improved,

The device according to the invention has the following structural characteristics:

a) Firstly, the device consists of a dismountable support structure to be attached to the truck cabin, which has a triangular cross-section as shown in the figure, but could also be shaped differently;

b) secondly, the device has two telescopic side rails of adjustable length, thanks to which the above Construction can be placed on cabins of different widths;

c) Thirdly, the structure and the side members can be attached to the cabin with the help of four brackets. These holders can be rotated at the ends of the side members.

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tied in an orderly manner by means of nuts;

d) Finally, the device consists of a front attached to the structure with a triangular cross-section Wing, which is characterized in that it (seen from above) has a specially shaped surface, which is preferably designed like two adjacent mussels or some other suitable shape has to distribute the impact force of the air in a special way.

These and other subordinate characteristics are clear from the following description and from the attached examples Drawings of a preferred embodiment of the device according to the invention. It shows:

Fig. 1 is a side view of the mounted on a truck cab Device which is adapted to the height of the truck by means of two different inclinations;

Pig. Figure 2 is a top view of the fore wing in a preferred one Embodiment;

Figures 2a and 2b each show a cross section along the line A-A and along the line B-B in Figure 2;

3 shows an enlarged detail from FIG. 1, namely the connection point between the device according to the invention and the holder on the truck cabin;

Fig. 4 is an exploded view of the invention, in the individual components disassembled device;

Fig. 5 is a side view of a truck on which the

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according to the invention is attached.

As can be seen from the drawing, the device according to the invention is attached to the cab C of the truck or delivery vehicle F (see Pig. 5).

The device according to the invention is essentially characterized (See Fig. 4) by a support structure 1, by two in pin 2 'terminating longitudinal members 2, by four holders 3 for the Fasten the side members to the cabin C with the aid of locking nuts 4 and through the front wing 5.

The supporting structure 1 preferably has a rectangular, oblique shape to the cabin surface arranged front and, as in the drawing, a triangular cross-section; but could depending on If necessary, it can also be shaped differently, which is readily understandable for the person skilled in the art. E.g. one could be domed or different curved or gable-shaped front and / or a diamond-shaped one Cross-section can be provided without thereby exceeding the scope of the invention.

The supporting structure 1 can be attached to the longitudinal beams in the most suitable manner, preferably with the aid of screws will. The same are made for this purpose in the support structure 1 holes 1f and in the Side members 2 existing holes 2f inserted.

The longitudinal beams 2 are telescopic so that the device can be adapted to truck cabins C of any width.

^{By the pins 2 1} provided at the ends of the longitudinal beams 2, which are inserted into the bores 3f in the holders 3 for fastening

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can be plugged into the car C, the longitudinal beams are in the desired position on the brackets with the help of nuts 4 3 attached. Obviously, with the help of the same nuts, the support structure 1 and the wing 5 attached to it in front are fixed, so that the device according to the invention can be tilted as required (see Pig. 1 and own. 3).

The wing 5 can also be attached to the front of the supporting structure as required 1 can be attached.

Seen from above, this wing 5 preferably has the shape of two adjacent shells with flat parts 5a, 5h, upper and side, obliquely upwardly extending parts 5 £, 5, d, as well as with lower, obliquely downwardly extending parts 5e, 5f (see Figures 4 and 5).

As is easily understood by a person skilled in the art, this form can also can be changed as needed, e.g. like a single shell or like two mussels, one higher and the other lower is so that the impact force of the air is divided as much as possible. These variants are also within the scope of the invention included.

From the above description it is clear that the collapsible, any inclinable and on any truck and Truck cab attachable device represents a significant advance in the industry sector concerned and the represents the first solution to an important technical problem.

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Claims (9)

Claims Device for reducing the air resistance of delivery vans and trucks whose superstructures are higher than that Driver's cab are characterized by a support structure that can be dismantled and fastened to the cab roof (1), which has a preferably rectangular front, sloping towards the roof, and triangular side parts, a guide surface or a wing (5) which divides the impact force of the air is attached to the front and the supporting structure (1) on the lower 909810/0600 ./2 BORO MONKS: TELEX: TELEGRAM: PHONE: BANK ACCOUNT: CHECK ACCOUNT: ST. ANNASTR. 11 1 - 856 44 INVENTION BERLIN BERLIN 31 W. MEISSNER, BLN-W 8000 MONKS 22 INVEN d BERLIN 030/891 60 37 BERLINER BANK AG. 122 82 -109 TEL .: 089/22 35 44 030/892 23 82 3695716000 - 2 side is stranded with two long members (2), at each end of which a holder (3) is attached. 2. Apparatus according to claim 1, characterized in that the wing, seen from above, has the shape of two adjacent shells with flat central parts, facing upwards having curved upper and side parts and with downwardly curved lower parts. 3. Apparatus according to claim 1 and 2, characterized in that both the! Support structure and the longitudinal beams Have appropriate holes for their attachment with the help of screws and bolts. 4. Apparatus according to claim 1 to 3, characterized in that the longitudinal members can be extended telescopically, so that they fit the width of the truck or Van cabin, on which the device is to be mounted can be adapted, and that the longitudinal beams in tenons run out, which in suitable, at different heights in the holders for fastening the device on the car roof provided holes inserted, rotated in them and in the desired position with the help of locking nuts can be attached so that the device is arranged at the desired height and at the desired inclination can be. 5. Apparatus according to claim 1 to 4 »in which the supporting structure has a curved or variously curved front side. 6. Apparatus according to claim 1 to 4 »in which the supporting structure has a gable-shaped front. 7. Apparatus according to claim 1 to 4 and claim 5 or 6, in which the supporting structure has a diamond-shaped cross-section. ./3 909816/0600 8. Apparatus according to any preceding claim in which the wing is in the form of a single clam when viewed from above Or the like. In which the air can flow in or out as quickly as possible. 9. Device according to one of the preceding claims, in which the wing has the shape of two shells, which but not in width, but in height side by side. H. J. ^ resting ¹ L 909810/0600