DE102010007854A1 - Vehicle wheel for motor vehicle, has contact zone exhibiting roughened surface, which is formed by applying hard material particles on rim shoulder, where contact zone is provided for form-fit connection between rim and pneumatic tire - Google Patents

Abstract

The wheel has a contact zone (5) provided for a form-fit connection between a rim (1) and a pneumatic tire (7) that is installed on the rim. The contact zone exhibits a roughened surface, which is formed by applying hard material particles on a rim shoulder (3) or on a transition of the rim shoulder to a rim flange (4), where the hard material particles consist of mineral materials. The roughened surface is formed between the rim and the pneumatic tire when flexible insert is formed with sufficient inherent strength.

Description

The The invention relates to a vehicle wheel, in particular for motor vehicles, according to the preamble of claim 1.

at a vehicle wheel whose rim is mounted with a pneumatic tire mounted thereon usually connected non-positively. So the pneumatic tire with strong torque transmission does not migrate on the rim, It can also be positively connected to the rim become.

An example of this is the published patent application DE 3605803 A1 to see where in a vehicle with a rim and a pneumatic tire, the tire beads are clamped to the rim by means of a clamping ring, the bead clamping surfaces of rim and clamping ring sections are equipped with elevations and depressions. In other embodiments, the rim is provided on the rim shoulder in the region of the rim flange all around with grooves or ribs in order to ensure a positive connection in addition to the frictional connection.

The patent DE 973526 B describes a rim for wheels with pneumatic tires on motor vehicles, which is blasted in the finished rounded state with steel gravel or steel balls, so that it has a roughened and solidified surface at the transition from the rim shoulder to the rim flange. The shot peening causes a full-surface change of the surface, which also acts in the depth of the structure and at the processing edges sometimes causes high voltage gradients, which can lead to cracks in the rim in the event of a hard passage of an obstacle, such as a pothole or a curb.

task The object of the invention is to provide a vehicle wheel which has a safe, positive connection between a rim and a Ensured pneumatic tires.

These The object is solved by the features of claim 1.

One Inventive vehicle wheel, in particular for Motor vehicles, which at least one contact zone for a positive connection between the rim and a comprises rim mounted pneumatic tires, characterized that the contact zone has a roughened surface, by applying hard particles on the rim shoulder or on the transition from the rim shoulder to the rim flange is formed.

The roughened surface allows micro-toothing between the rim and the rim mounted on the pneumatic tire and avoids relative movements by positive connection between rim and pneumatic tires, especially at high torque loads, such as when accelerating or braking a vehicle can arise.

The form-fitting coupling of rim shoulder and tire bead over The micro-toothing also prevents tire inflation pressure losses or the emergence of implausible wheel speeds in the vehicle dynamics programs in the case of a pneumatic tire sliding on the rim.

The Hard material particles can be applied directly to the rim surface by well-known methods such as vapor deposition, spraying, sintering or diffusion applied. The application of hard material particles on the rim shoulder has the advantage that the rim body no structural or property change in his Depth experiences, but the surface due to the Hard substance particles are rough enough to over one Micro gearing a positive connection between the rim and the mounted thereon To ensure pneumatic tires.

One Another advantage is that the tire to be mounted no special adjustments, such as the application a Verzahnungsprofiles are necessary and therefore commercially available Pneumatic tires can be used.

The maximum size of the hard particles is to be chosen so that the damage of the surface by the Pressing the particles does not reach an inadmissible extent. This is for example ensured if the particle diameter no more than three times that of the rim surface originating roughness in the manufacture of the rim is.

In In one embodiment, the hard material particles have different Particle sizes. This allows a Particularly economical production of hard particles, since the spread of the particle diameter in the manufacturing process can be increased accordingly and minimizes the waste becomes.

The Hard material particles can be regular or even disordered over the surface of the rim shoulder or on the transition from the rim shoulder to the rim flange be distributed.

Another advantage is the use of mineral materials for the production of hard material particles. As a rule, mineral materials do not react chemically with the materials of the components to be joined or with ambient media under the respective conditions of use. So come on Materials for the hard material particles such as carbides, nitrides, quartzes, aluminas or diamonds are used.

In A further embodiment of the invention relates to a vehicle wheel, in particular for motor vehicles, which at least one Contact zone for a positive connection between the rim and a rim-mounted pneumatic tire, the contact zone has a roughened surface which by machining with a laser beam on the rim shoulder or on the transition from the rim shoulder to the rim flange is formed.

A Surface structuring by means of a laser beam machining has the advantage of no additional material in the contact zone to bring between the rim and pneumatic tires what the Simplified manufacturing process.

there is it advantageous in addition to a multitude of possible variants, point or line contours by means of a laser beam processing in different sizes to apply to the To make contact zone between rim and pneumatic tires load-bearing.

In A further embodiment of the invention relates to a vehicle wheel, in particular for motor vehicles, which at least one Contact zone for a positive connection between the rim and a rim-mounted pneumatic tire, the contact zone has a roughened surface which between rim and pneumatic tires as a flexible insert with sufficient Inherent strength is formed.

These Insert can, for example, from a self-supporting film or a Consist of film, are applied to the hard particles. The application The hard material particles can be on one side or on both sides the deposit.

Further it is also possible to have one with a corresponding roughness provided surface structure of the insert by means of a To achieve laser beam processing.

To other types of processing of the deposit with the aim of a corresponding To ensure surface roughness count for example, printing, embossing or stamping. The editing can also on one side or on both sides of the insert respectively.

The flexible insert is called a contact zone with roughened surface structure when mounting the tire on the rim between the rim shoulder or the transition from the rim shoulder to the rim flange and the tire bead of the pneumatic tire, preferably in the circumferential direction appropriate. The deposit has the advantage that commercial Rims or pneumatic tires can be used.

Farther it is also possible on one or both sides of the Insert an adhesive layer to apply. The adhesive layer can do this on an untreated, smooth or on an already roughened surface be applied to the insert. The adhesive layer has the advantage the deposit on at least one side, for example to the to Rim facing side, to fix and against a possible shifting to secure, for example, in a subsequent assembly of the Pneumatic tire is an advantage.

In an embodiment, in particular with increased layer thickness the insole, become recesses, such as depressions or grooves in the rim between the rim shoulder or the transition from the rim shoulder to the rim flange preferably in the circumferential direction introduced the insert as a contact zone between the rim and the pneumatic tire. Through this design the easy assembly of the tire remains as it is the circumference of the rim in the area of the insert not or only slightly increased.

In In another embodiment, the contact zone extends in Circumferential direction of the rim as a self-contained, band-shaped Area on the rim shoulder or on the transition from the rim shoulder to the rim flange.

These Design has the advantage that the entire area that the Forces between rim and pneumatic tires, as a contact zone with a corresponding roughened surface structure can be used.

It Now there are different ways of teaching the present Invention in an advantageous manner and further develop. On the one hand to the subordinate claims and on the other hand to the following explanation of an embodiment to refer. It should also include the advantageous embodiments be made up of any combination of subclaims result.

in the The following is based on the drawing without limitation of Generality of an embodiment of the invention in more detail be explained, the single figure is a partial section by an inventive vehicle wheel shows.

The figure shows a partial section through a vehicle wheel with a rim ( 1 ) made of steel or Light metal, a rim base ( 2 ), Rim shoulders ( 3 ), Rim flanges ( 4 ) and contact zones ( 5 ) between the rim ( 1 ) and the tire beads ( 6 ) of the tire ( 7 ).

The rim bed ( 2 ), also called inner floor, is formed in the figure as a low bed, which facilitates tire mounting in general. The to the rim bed ( 2 ) subsequent rim shoulders ( 3 ) form the seats for the tire beads ( 6 ). The rim flanges ( 4 ) form the lateral stops for the tire beads ( 6 ) of the tire ( 7 ). At the contact zones ( 5 ) between the rim shoulders ( 3 ), the rim flanges ( 4 ) and the tire beads ( 6 ), the power transmission takes place in the circumferential direction of the vehicle wheel when accelerating or braking the vehicle. The contact zones ( 5 ) have roughened surfaces on the rim, which can be produced for example by the application of hard particles or by machining with a laser beam. Alternatively, it is also possible deposits, such as thin, flexible layers having roughened surfaces and sufficient inherent strength, in the rim shoulders ( 3 ) or the rim flanges ( 4 ).

The roughened surface of the contact zones ( 5 ) leads to a micro-toothing between the rim ( 1 ) and the pneumatic tire ( 7 ) and avoids the form-fit-like connection between the rim shoulders ( 3 ), the rim flanges ( 4 ) and the tire beads ( 6 ) Relative movements between rim ( 1 ) and pneumatic tires ( 7 ) at high torque load, as may occur, for example, when accelerating as well as braking the vehicle.

1

rim

2

rim

3

rim shoulder

4

rim flange

5

contact zone

6

tire

7

tire

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3605803 A1 [0003]
• - DE 973526 B [0004]

Claims (10)

Vehicle wheel, in particular for motor vehicles, which has at least one contact zone ( 5 ) for a positive connection between the rim ( 1 ) and one on the rim ( 1 ) mounted pneumatic tires ( 7 ), characterized in that the contact zone ( 5 ) has a roughened surface, which by application of hard particles on the rim shoulder ( 3 ) or on the transition from the rim shoulder ( 3 ) to the rim flange ( 4 ) is formed. Vehicle wheel according to claim 1, characterized that the hard material particles have different particle sizes exhibit. Vehicle wheel according to claim 1 or 2, characterized that the hard particles consist of mineral materials. Vehicle wheel, in particular for motor vehicles, which has at least one contact zone ( 5 ) for a positive connection between the rim ( 1 ) and one on the rim ( 1 ) mounted pneumatic tires ( 7 ), characterized in that the contact zone ( 5 ) has a roughened surface which, by machining with a laser beam on the rim shoulder ( 3 ) or on the transition from the rim shoulder ( 3 ) to the rim flange ( 4 ) is formed. Vehicle wheel according to claim 4, characterized that formed by machining with a laser beam Surface point or line contours having. Vehicle wheel, in particular for motor vehicles, which has at least one contact zone ( 5 ) for a positive connection between the rim ( 1 ) and one on the rim ( 1 ) mounted pneumatic tires ( 7 ), characterized in that the contact zone ( 5 ) has a roughened surface between the figs ( 1 ) and pneumatic tires ( 7 ) is designed as a flexible insert with sufficient inherent strength. Vehicle wheel according to claim 6, characterized that the flexible insert a roughened on one side or both sides Surface has. Vehicle wheel according to one of claims 6 or 7, characterized in that the flexible insert on one side or has an adhesive layer on both sides. Vehicle wheel according to one of claims 6 to 8, characterized in that the flexible insert in a recess on the rim shoulder ( 3 ) or in a depression on the transition from the rim shoulder ( 3 ) to the rim flange ( 4 ) runs. Vehicle wheel according to one of the preceding claims, characterized in that the contact zone ( 5 ) in the circumferential direction of the rim ( 1 ) as a self-contained, band-shaped surface on the rim shoulder ( 3 ) or on the transition from the rim shoulder ( 3 ) to the rim flange ( 4 ) runs.