DE202010002453U1 - Locally forged, tubeless rim - Google Patents

Abstract

A rim (4) for vehicles, comprising a rim ring (1), a wheel disc (2) in contact with the rim ring (1), a tire seat surface (3), a valve (5.1) and a valve hole (5), characterized in that the rim comprises at least one valve seat (6) adapted to secure the valve (5.1) to the rim ring (1) on the tire seat surface (3), the valve seat (6) comprising a recess corresponding to the size of the neck of the valve (5.1).

Description

Field of the invention

The The present invention relates to wheels for wheels Land transport vehicles with tubeless tires, the disc or use drum brakes. In particular, the invention relates a wheel rim with a locally formed thereon valve receiving area.

Background of the invention

Tubeless tire rims (referred to as tubeless rims for short) are used in various types of vehicles. Tubeless rims have constructive differences compared to rims with tubes of the previous generation. New generation rims clamp and seal the tire. Some areas where the rims clamp the tire and the valve seats are different for vehicles of different types. The shape of the rims and the valves may be different in different commercial vehicles, such as mass transit vehicles, trucks, and construction equipment, compared to those used in passenger cars. Various manufacturing designs are used to hold and fix the valve components. Such an embodiment is in the EP 2036742 which discloses an embodiment of a valve for use in tubeless tires for commercial vehicles, such as those for transporting heavy loads or passengers.

Such an embodiment is in the WO 0128785 . EP 1106388 and in the FR 2802149 described. These applications disclose details about the construction of a wheel rim and disc and a valve opening. In these documents, hook and base components on the wheel are characterized.

The EP 0701911 reveals a wheel detail for tubeless tires. According to this document, a flange-like seat groove is formed between two bosses and a valve hole. The humps and safety flanges described in this application are provided by cold forming over the entire circumference of the wheel rim (360 °). The valve is guided by this hump through the wheel rim and protrudes between the wheel disc and the wheel rim beyond the front of the wheel. Potential disadvantages of such embodiments are that the over 360 ° formed around the circumference of the wheel hump both increase the material requirements and increase the wheel weight. The difficulty of guiding the bead heel over the wheel hump during assembly results in a further disadvantage. In short, the weight and cost of the wheel are increased and, in addition, the tire / wheel assembly time thereof is increased and the labor costs increased accordingly. The humpback structure holding the valve member on the wheel makes the care, repair, and assembly / disassembly work more complicated. It increases the manufacturing costs and the raw material consumption in the wheel production by the presence of the structure. However, tubeless rims should allow ease of assembly / disassembly, cost-effective manufacture, ease of manufacture, ease of maintenance, ease of use, and reduced mechanical load on the vehicle.

Brief summary of the invention

The Object of the present invention is, by the design The valve holding components of wheels have the inner details of wheels of any type of land transport vehicles with tubeless Tires easier to use for discs or drum brake systems to design, simplify the manufacture and assembly / disassembly to make more comfortable.

To In one aspect, the invention enables a simplified one Assembly of tubeless rims compared to the state of the art. In another aspect, the invention enables a Wheel with comparatively low production costs and weight. According to another aspect of the invention, a more convenient use tubeless rims compared to the prior art.

These tasks are performed by a rim ( 4 ) for vehicles with a rim ring ( 1 ), a wheel disc ( 2 ) in contact with the rim ring ( 1 ), a tire seat surface ( 3 ), a valve ( 5.1 ) and a valve hole ( 5 ). At least one valve seat formed on the tire seating surface secures the valve therein. The recess of the valve seat is formed so that it is sufficient to receive the valve neck.

The The present invention will be described in detail below based on an illustrative embodiment which are briefly described in the following Figures is shown simplified.

1 Figure 4 is a general perspective illustration of the wheel of the present invention.

2 FIG. 11 illustrates an outer front view of the valve mounting part according to this embodiment. FIG Game of the wheel.

3 is another rearward interior view of the valve mounting part of the wheel according to the embodiment.

1

rim

2

wheel disc

3

Tires seat

4

rim

5

valve hole

5.1

Valve

5.2

valve tip

6

valve seat

7

ventilation holes

Detailed description the invention

The invention will be disclosed below with reference to the above figures. The rim ( 4 ) with recessed valve seat, which in the 1 . 2 and 3 in particular comprises a rim ring ( 1 ), a wheel disc ( 2 ), a tire seat surface ( 3 ), a valve hole ( 5 ), a valve ( 5.1 ), a valve tip ( 5.2 ), a locally forged valve seat ( 6 ) and ventilation holes ( 7 ).

The valve ( 5.1 ) is on the surface of the rim ( 4 ) through a valve seat ( 6 ) mounted on the tire seat surface ( 3 ) is formed and one in size with the valve neck ( 5.1 ) has matching recess, as in 1 . 2 and 3 is illustrated. The valve seat ( 6 ) is more detailed in 2 and 3 shown. The valve ( 5.1 ) is through the valve seat ( 6 ) on the surface of the rim ( 4 secured by local forging on the side of the tire seating surface ( 3 ), which faces the tire, is notched. In particular, the valve ( 5.1 ) through a valve seat ( 6 ) on the surface of the rim ( 4 fixed at about 8 ° laterally on the tire seat surface (FIG. 3 ), which faces the tire, is incorporated.

The locally forged valve seat ( 6 ) is preferably by means of a die in the tire seat surface ( 3 ) formed one of two the rim ( 4 ) forming components. The valve 5.1 is in the valve hole ( 5 ) mounted in the surface of the locally forged valve seat, in the wheel disc ( 2 ), which is the second component ( 4 ), and the tip of the valve ( 5.2 ) protrudes between the rim ring ( 1 ) and the wheel disc ( 2 ) in the outward direction, in which the ventilation holes ( 7 ) are arranged.

The local forging process of the valve seat ( 6 ) is applied to a region of 8 ° of the tire seating surface by means of a single deep-drawing operation ( 3 ) of the rim ring ( 1 ).

• a) Die wegen Sicherheitsflanschen verwendeten Menge von Rohmaterial, beispielsweise für Buckel, die sich um 360° über den gesamten Umfang der Felge erstrecken, wird durch das lokale Schmieden verringert, sodass die Kosten reduziert und Ressourcen gespart werden.
• b) Während in Felgenringen mit sich über den gesamten Umfang (360°) erstreckenden Sicherheitsflanschen das Aufpumpen des Reifens erst beginnt, wenn die Wulstferse vollständig sitzt (100%), kann das Aufpumpen des Reifens in einem lokal geschmiedeten Felgenring bereits gestartet werden, wenn nur 4% der Wulstferse festsitzen. Dadurch kann die Montage vereinfacht werden und Arbeit eingespart werden.
• c) Während es notwendig ist, wenigstens zwei Kaltumform-Walzvorgänge durchzuführen, um einen vollständigen (360°) Sicherheitsflansch zu bilden, ist es für den lokalen Schmiedevorgang ausreichend, eine einzige einfache Pressoperation durchzuführen. Der Vorgang ist daher vereinfacht und es können deutliche Vorteile in Bezug auf Arbeit und Energiekosten erzielt werden.

By such a forging formed wheel according to the present invention shows the following differences and advantages over the prior art, according to which the valves are pressed over the hump:

• a) The amount of raw material used for safety flanges, such as humps that extend 360 ° over the entire circumference of the rim, is reduced by local forging, thus reducing costs and conserving resources.
• b) While in rim rings with flanges extending over the full circumference (360 °), inflation of the tire does not begin until the bead heel is fully seated (100%), inflation of the tire in a locally forged rim ring may already be started, if only 4% of the bead heel stuck. As a result, the assembly can be simplified and work saved.
• c) While it is necessary to perform at least two cold forming rolling operations to form a complete (360 °) safety flange, it is sufficient for the local forging operation to perform a single simple pressing operation. The process is therefore simplified and significant benefits in terms of labor and energy costs can be achieved.

There a wheel with a valve seat formed by local forging a lower weight than one around the entire circumference (ie 360 °) has running safety flange, the Maximum load increases and the fuel consumption becomes noticeable decreases when reducing the total weight of all wheels of the vehicle is taken into account.

The present invention is illustrated by the illustrative embodiment, The above is not limited but should within the scope of the following claims become.

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

• - EP 2036742 [0002]
• WO 0128785 [0003]
• - EP 1106388 [0003]
• FR 2802149 [0003]
• EP 0701911 [0004]

Claims (3)

Rim ( 4 ) for vehicles, comprising a rim ring ( 1 ), a wheel disc ( 2 ) in contact with the rim ring ( 1 ), a tire seat surface ( 3 ), a valve ( 5.1 ) and a valve hole ( 5 ), characterized in that the rim has at least one valve seat ( 6 ), which is used to secure the valve ( 5.1 ) on the rim ring ( 1 ) on the tire seat surface ( 3 ), wherein the valve seat ( 6 ) comprises a recess which corresponds to the size of the neck of the valve ( 5.1 ) corresponds. A rim according to claim 1, wherein the valve seat ( 6 ) is formed by local forging. A rim according to claim 1, wherein the valve seat ( 6 ) at about 8 ° in the tire-facing tire seating surface ( 3 ) of the rim ( 4 ) is trained.