DE202012004479U1 - Aerodynamic part at the rear of the vehicle - working with air pressure and vacuum - Google Patents

Abstract

A streamlined structure (2) at the rear of a truck (1), a bus or a mobile home, characterized in that: it is not a fixed but an inflatable structure; and in that it is mounted on an additional plate (3) on the rear wall of the vehicle, which is mounted on hinges so that the structure can be pivoted to the side to allow access to the rear (4) of the car; and that the inflatable structure is deployed by means of air pressure when it is put into operation; and that the inflatable construction is stably and firmly retracted by vacuum when not in use; and that the inflatable construction consists of several chambers (5) which are separately filled with pressure or vacuum one after the other in order to enable an orderly and safe drive out and in; and that the construction by means of pumps or driving wind, or a combination of both ...

Description

The technical area

Vehicle construction, car construction. Parts of the vehicle technology. Measures to optimize the aerodynamics of vehicles, especially large vehicles (no cars)

The current state of the art

There are a variety of solutions to improve the aerodynamics of large vehicles. Roof spoilers are known on trucks that aerodynamically optimize the transition from the cabins to the load compartment or modern buses where the driver is sitting very low and the upper front wall of the vehicle is inclined very obliquely backwards. There are also experimental solutions to equip a truck with a streamlined stern. However, for practical reasons, this is hardly applicable in everyday use.

Background and illustration of the invention

• – Der Zugang zu der Hintertür des Laderaums soll nicht eingeschränkt werden.
• – Die Konstruktion die zwangsläufig die Fahrzeugslänge erheblich vergrössern würde sollte auch nach Bedarf ”einfahrbar” sein, so dass das Fahrzeug die ursprüngliche Länge hat. Bei den Stadtfahrten oder beim Manövrieren braucht man kein überlanges Aerodynamisches Teil

The object is to design a stromlinienformigen structure for the rear wall of a truck, which does not hinder or hamper the practical use of the truck.

• - The access to the back door of the hold should not be restricted.
• - The construction would inevitably increase the vehicle length significantly should also be "retractable" as needed, so that the vehicle has the original length. For city driving or maneuvering you do not need a super long aerodynamic part

The construction presented here fulfills these requirements. It is attached to a plate ( 3 ), the rear wall of the vehicle ( 4 ) covered, mounted. This plate is laterally mounted by means of hinges on the vehicle, so that the whole construction can be easily swung to the side when the rear wall of the vehicle, for. B. should be accessible for unloading.

The streamlined body ( 2 ) is not a solid structure but made of a material that is inflated with air pressure built. So he can be driven out to fast rides and in other situations where he is not needed or even disturbing - he can be driven back in again. To ensure that the construction sits stably on the rear wall of the vehicle in the "driven-in" state, a vacuum is created.

The unstable phase when extending or retracting the body is mitigated by the fact that the body consists of several chambers which are independently supplied to each other with pressure or negative pressure. So z. B. when driving in the outer hull of the body are "sucked" while inside a core is still hard under pressure and prevents the substance simply drops to the floor behind the vehicle or fluttering (while driving) behind the vehicle. Alternatively, the body may be constructed to follow the chamber one after another so that the body is driven "slice by slice" ( 4a , b, c). The valves of the chamber can be ausgestalltet so that the circuit of the chamber takes place automatically one after the other - z. B. when emptying (driving in), the rearmost chamber is first emptied and as soon as this chamber is completely folded, the emptying of the next chamber opens automatically.

embodiment

On the back wall of the truck ( 1 ), the whole size of the rear double door ( 4 ) a plate ( 3 ) appropriate. You can z. B. as a sandwich panel aluminum or fiberglass with hard foam core be executed. The plate is covered with a metal frame around. The frame has side hinges with which it is attached to the case of the truck. Thus, the plate (when unloading the truck) can be pivoted by 270 degrees to not disturb when unloading the truck.

On the frame with plate is an "aerodynamic soft body" ( 2 ) assembled. It is made of a material that is impermeable, elastic and durable (crease resistant). The soft body consists of several mutually airtight chambers ( 5 ). When inflated, it has a shape that resembles a drop (back half of a drop). He can also formations ( 6 ) similar to an elevator of an airship, these have enabled additional lighting system to be mounted at the end of the body so that the light is placed on the side edges of the car.

The soft body is filled with air pressure when driving out and back in with negative pressure (and held firmly with vacuum at the rear of the vehicle).

The individual chambers of the soft body are filled with pumps or driving wind or combination of both nit air or emptied again.

At the end of the soft body additional taillights of the vehicle are mounted. It recommends a robust, shock-resistant design, z. B. with LED as the light source.

List of marked parts:

LIST OF REFERENCE NUMBERS

1

Truck with suitcase

2

aerodynamic body

3

swiveling plate on which the body is fixed

4

rear door of the truck bed

5

the single air chamber

6

"Airship Rudder" - shaping of the inflatable body

Drawings:

1 : Truck with the aerodynamic body.

2 : Truck rear view with swiveling plate attached to the inflatable body.

3 : View of the multiple chamber of the inflatable body.

4a , b, c: phases of retraction of the body - single chamber one after the other.

5 : View of the airship-like element - the small striped circles are the tail lights of the vehicle.

Claims (4)

A streamlined structure ( 2 ) at the rear of a truck ( 1 ), a bus or a motorhome characterized in that: it is not a fixed but an inflatable construction; and that it's on an extra disk ( 3 ) is mounted on the rear wall of the vehicle, which is mounted on hinges, so that the construction can be swung to the side to the access to the rear ( 4 ) of the car; and that the inflatable construction is driven out by air pressure when it is put into operation; and that the inflatable Konstrunktion is stable and firmly retracted by vacuum when it is not used; and that the inflatable construction consists of several chambers ( 5 ), which are filled separately, one after the other with pressure or vacuum to allow an orderly and safe out and in; and that the structure is supplied by means of pumps or driving wind, or combination of both with air pressure and with vacuum. A streamlined structure at the rear of a truck or bus according to claim 1, characterized in that it has either the shape-which resembles the rear part of a drop-or in addition a horizontal element ( 6 ) similar to the elevator of an airship on which the lighting system of the vehicle can be placed on lateral, rear bark. A Strömlinienformiger structure at the rear of a truck or bus according to claim 1, characterized in that the attachment of the construction on the pivoting plate ( 3 ), which allows the use of the construction on the transport truck and the rear door of the vehicle ( 4 ) is freely accessible for loading. A Strömlinienformiger structure at the rear of a truck or bus according to claim 1, characterized in that the filling and emptying of the air chamber can be automated by the special Ausgestalltung the valves such that the completion of the filling or emptying process in a chamber, the Begin des Process in the next chamber.

Images