DE8905057U1 - Wheel with tubeless tyre for a motor vehicle - Google Patents

Description

Applicant: 1) Alberto DAL CERO Via San Rocco 7

(Torino),

2) Esterina &Zgr;

Closio Street 19 Buttigliera Alta rJforino), Italy Wheel with tubeless tyre for a motor vehicle

This innovation concerns wheels of motor vehicles equipped with tubeless tyres.

Wheels on motor vehicles are subjected to high mechanical stresses, which are greater the faster the vehicle is travelling and the less even the road surface is. Any parts located eccentrically on the wheel increase the vibrations and the imbalance of the wheel. This increases the possibility of damage due to fatigue fracture.

The aim of the innovation is to reduce vibrations on the wheel, which are particularly noticeable at high speeds.

inflation valve of conventional tires, and also to enable better monitoring of tire function.

This task is solved by a wheel for a motor vehicle with a rim and a tubeless tire in that a passage is provided on or in the rim which connects the inside of the tire with an area on the

"■' Axis of the wheel, this area being at least

a connection point or a connection device to which the tire inflation valve is mounted? Preferably, at least a second connection point or second connection device is provided in said area for the mounting of devices for detecting faults in the tire and/or faults on the rim and/or operating parameters while the vehicle is traveling.

In a further advantageous embodiment, the said passage is a substantially radially extending channel in the interior of the rim.

In a further advantageous embodiment of the innovation , the said area is covered with a cover cap which is provided with ventilation holes.

The innovation is characterized by the fact that the wheel has a passage that connects the inside of the tire with a zone in the area of the axle, which in turn contains connection devices at least at one point such as a nozzle, a screw thread, a molded seat or a blind hole or the like in order to be able to mount the tire inflation valve on this connection device. This zone has

advantageously a second location with similar connection facilities for the installation of a detection device or a detector system for faults in the tyre and/or on the rim and/or for the monitoring of operating parameters while the vehicle is in motion or for the installation of parts of such devices.

In this way, the problem of vibrations which can occur at the inflation valve of conventional tires, especially at high speeds, is greatly reduced or eliminated. At the same time, it is easy to ensure that any operating monitoring devices and systems or devices for detecting faults which may be required can be installed as close as possible to the wheel axle, which is advantageous for reasons of wheel balance.

Preferably, the innovation is implemented in a die-cast wheel, wherein the passage consists of a substantially radially distributed groove formed in the rim itself.

It is also advantageous if the wheel is connected to a cover cap that can be attached or locked with a bolt to prevent theft, which covers the central area with the valve and any detector devices that may be present.

To better explain the innovation, an example is described below. Reference is made to the drawing.

The sole figure 1 shows a partial view of a section through a wheel improved according to the innovation.

In figure 1, the wheel comprises a rim 1, a tubeless tire 2 and a passage 3 for internally connecting the tire 2 to a chamber 4 arranged on the axis of the rim L.

This chamber 4 can in turn be connected, for example, to a pressure sensor, in particular to a device or system for detecting pressure disturbances in the tire, said sensor acting as a transmitter which transmits signals to a receiver inside the vehicle. In the drawing, the detection system (sensor and transmitter) mounted on the wheel is designated by the reference numeral 5. The reference numeral 6 designates a fastening device or means for fastening the detection system to the rim or wheel, and the reference numeral 7 designates a retaining ring.

The passage 3 simultaneously provides the connection between the interior of the tire 2 and the connection point on which the tire inflation valve 8 is mounted, this second connection point being located near the axle.

In the case of die-cast wheels, the passage 3 can be a substantially radial channel, which can be formed and created inside the rim during the same die-casting process used to produce the rim 1. In the case of forged wheels, on the other hand, a tube on the outside of the rim can fulfill the function of the passage 3.

Advantageously, the central area of the rim 1

be provided with a cover, a hubcap or a cover cap 9, which is made of plastic, for example, and which covers both the valve and the detector devices 5 or conceals them from view. The cover cap 9 can be screwed on, as shown in the figure, whereby it is held by locking means, or screwed on by a lockable anti-theft system.

This central area is lined with insulating material to protect the valve 8 and the detection devices or systems 5 from elevated temperatures that may occur at the wheel.

The cover cap 9 is also provided with ventilation holes 10.

The wheel, the subject of the innovation, has not only technical advantages but also aesthetic advantages. Firstly, the detection devices for faults and operating functions as well as the valve are mounted close to the wheel axle, the presence of these additional detection devices does not cause the wheel to become unbalanced, and secondly, the valve, located close to the axle, is subject to less vibration, which reduces the possibility of fatigue fracture.

From an aesthetic point of view, and this applies especially to the die-cast alloy wheels, there are no longer any visibly protruding parts. The cover cap can be designed to be attractive.

It should also be noted that the cover cap 9, especially if it is fitted with a lockable anti-theft

security system is installed, contributes significantly to reducing the possibility of theft of the fault detection system 5 or damage to the valve 8.

Claims (4)

Dr. Horst Schüler PATENT ATTORNEY EUROPEAN PATENT ATTORNEY D-eOOO Frankfurt/Main 1 KalMi-ttrMM 69 (MQ765090,235566 4W760nwp«td nwinpctantfmnfcfart (CCnTQrupp«2and3) 2260369 DMtsdwBankAS 282420-602 FrwMurt/M. Bank account PottQireiwnto Your sign Aburrtf. OurZMchen/durraf. Detum/Dste D/3189.0 1989 Applicant; H Alberto DAL CERO Via San Rocco 7 Piossasco (Torino), Italy 2) Esterina ZORZI Closio Street 19 Buttigliera Alta (Torino), Italy Protection claims 1. Wheel for a motor vehicle with a rim and a tubeless tyre, characterized in that a passage (3) is provided on or in the rim (1) which connects the interior of the tire (2) with an area on the axle of the wheel, this area having at least one connection point or connection device on which the tire inflation valve (8) is mounted. 2. Wheel according to claim 1, characterized in that in said area a second connection point or a second connection device for I I I I M * ii • , &igr;&igr;· · · · IIII ·. &igr; · Il · ·· ·· the installation of devices for detecting faults in the tyre (2) and/or faults in the rim (1) and/or operating parameters while the vehicle is moving is provided. 3. Wheel according to claim 1 or 2 , characterized in that; said channel ( 3) is a radially extending channel in the interior of the rim (1). 4. Wheel according to one of claims 1 to 3, characterized in that a cover cap (9) provided with ventilation holes (10) is provided, which covers the said area.