DE102008004065A1 - Tire module for vehicle tires - Google Patents

Abstract

The invention relates to a tire module for vehicle tires. In order to provide a tire module in which the tire module has a high durability, it is proposed that the tire module (3) has a hard shell (1) with a modulus of elasticity at least twice as high as that of the potting material (10) of the electronic module (4).

Description

The The invention relates to a tire module for vehicle tires.

Tire modules are used in the tire for various tasks. This includes, in particular, a tire identification with which an automobile manufacturer can quickly and automatically determine, among other things, from which tire plant a particular tire was delivered and to which vehicle the tire was mounted. Other tasks may include air pressure monitoring, temperature measurement or measurement of mechanical stress conditions in the tire. Modern tire modules include an electronic module in which sensor elements and other electronic components are arranged. An example of such a tire module discloses the DE 102 43 441 A1 ,

One Problem with the use of tire modules is the high loads connected to the electronics module under certain circumstances lead to damage of the electronic module.

Of the Invention is based on the object, a tire module for to provide a vehicle tire, wherein the tire module a has high durability.

Solved becomes the task according to the characterizing features claim 1, characterized in that the tire module comprises a hard shell a minimum compared to the potting material of the electronic module having twice the elastic modulus.

One Advantage of the invention is in particular to be seen in that the hard shell mechanical stresses in the operating condition occur the vehicle tire and indirectly transferred to the Reifmodul will be minimized overall. The hard shell protects thus the electronic module against the high mechanical stresses, either the entire electronic module or individual components of the electronic module can damage. The shell thus contributes significantly to increasing the durability of the electronic module. These benefits are particularly due the relatively high modulus of elasticity of the hard shell material achieved, whereby the hard shell - even at high loads - itself only slightly deformed. This will make the tire module one total subjected to lower thermal stress, as otherwise in conventional tire modules, there is less Heat generated by deformation.

In an advantageous embodiment of the invention is provided that the hard shell is cup-shaped and the protects internal components of the tire module from mechanical stresses. The cup-shaped design of the hard shell offers a optimal protection against external mechanical forces Stresses.

In a further advantageous embodiment of the invention is provided that the hard shell has a circumferential conical side wall. In this way, the tire module can be easily in the insert surrounding rubber container, which is also a conical Has cross-sectional contour.

In a further advantageous embodiment of the invention is provided that the hard shell is made of steel or aluminum. Own these materials a relatively high modulus of elasticity.

In a further advantageous embodiment of the invention is provided that the wall thickness of the hard shell is between 0.2 and 1.2 mm. In this wall thickness range offers the hard shell provides optimal protection and also has a low weight.

In a further advantageous embodiment of the invention is provided that between the electronic module and the hard shell a potting compound When the tire module is manufactured, the electronic module becomes first in the hollow pot-shaped hard shell positioned and then shed with a suitable potting compound. In this way, an optimal connection between electronic module, Potting compound and hard shell achieved.

In a further advantageous embodiment of the invention is provided that the potting compound on its outside cone-shaped is formed, whereby a positive fixation realized in the hard shell. By the form-fitting Fixing the electronic module is firmly anchored in the hard shell.

In a further advantageous embodiment of the invention is provided that the container is essentially the shape of a truncated cone having. As a result, the container has on its underside a relatively large connection surface to the inside of the tire of the vehicle tire.

Based An embodiment of the invention is intended to be closer be explained. It shows:

1 : an embodiment of the tire module.

The 1 shows an embodiment. On the inside of the tire 2 is z. B. in Reifenzenit the tire module 3 arranged, among other things sensors, an electronic component with an actively transmitting element and a memory are arranged. In memory, tire-specific data, eg. As DOT No. etc., stored, processed and forwarded to in-vehicle or external recipients. The procedure is analogous to the recorded sensor data.

The tire module 3 is over an adhesive layer 5 with the inside of the tire 2 connected. In the tire module 3 is an electronic module 4 arranged, which comprises at least one tire pressure measuring system. The container 6 consists of an elastomeric material or a potting compound.

The 1 shows a cross-sectional view of the tire module 3 with the inside of the tire 2 , The electronics module 4 is cylindrical and centered in the cup-shaped hard shell 1 arranged. The electronic components, not shown, are in the Veergussmasse of the electronic component 4 embedded. In the space between the electronic module 4 and the hard shell 1 is an additional potting compound 8th arranged. In the production of the tire module 3 becomes the electronics module 4 first in the middle of the hard shell 1 positioned. Subsequently, the potting compound 8th added that the electronics module 4 stuck in the hard shell 1 anchored. A suitable material for the hard shell is for example steel or aluminum with a relatively small wall thickness between 0.2 to 1.2 mm. After the tire module with the hard shell 1 made in a separate manufacturing process, it gets through the opening 7 in the container 6 positively positioned. An exchange of the tire module 3 also takes place through the opening 7 in which the side walls of the container 6 be bent away to the side. The design of the tire module with the hard shell ensures that the tire module remains very dimensionally stable even at high loads and high temperatures. The hard shell also greatly reduces the thermal stress on the tire module, which could also lead to failure of the tire module.

1

Hardness Bowl

2

Tire inside

3

tire module

4

electronic module with a tire pressure measuring system

5

adhesive layer

6

Container made of elastomeric material

7

opening in the container

8th

potting compound

9

conical Side wall

10

grout of the electronic module

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 10243441 A1 [0002]

Claims (9)

Tire module ( 3 ) for vehicle tires with a tread, sidewalls and a tire inner side ( 2 ), wherein the tire module ( 3 ) one on the inside of the tire ( 2 ) attached containers ( 6 ) made of an elastic material and an electronic module ( 4 ) comprising integrated electronic components, the electronic components being incorporated in a potting material ( 10 ) of the electronic module ( 4 ) and the tire module ( 3 ) via a positive connection in the container ( 6 ), characterized in that the tire module ( 3 ) a hard shell ( 1 ) with a compared to the potting material ( 10 ) of the electronic module ( 4 ) has at least twice as high elastic modulus. Tire module according to claim 1, characterized in that the hard shell ( 1 ) is cup-shaped and the inner components of the tire module ( 3 ) protects against mechanical stresses. Tire module according to claim 1 or 2, characterized in that the hard shell ( 1 ) a circumferential conical side wall ( 9 ) having. Tire module according to one of the preceding claims, characterized in that the hard shell ( 1 ) consists of steel or aluminum. Tire module according to one of the preceding claims, characterized in that the wall thickness of the hard shell ( 1 ) is between 0.2 and 1.2 mm. Tire module according to one of the preceding claims, characterized in that between the electronic module ( 4 ) and the hard shell ( 1 ) a potting compound ( 8th ) is arranged. Tire module according to one of the preceding claims, characterized in that the potting compound ( 8th ) is cone-shaped on its outer side, whereby a positive fixation in the hard shell ( 1 ) is realized. Tire module according to one of the preceding claims, characterized in that the container ( 6 ) has substantially the shape of a truncated cone. Tire module according to one of the preceding claims, characterized in that the container ( 6 ) on its upper side an opening ( 7 ) for mounting and dismounting the electronic module ( 4 ) having.