# US 2014/0191566 A1 · Vehicle Wheel with a Rim Made of Fiber-Reinforced Synthetic Material

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- Number: US 2014/0191566 A1
- Document ID: US20140191566A1
- Status: Published application
- Kind: A1
- Application number: 14/209,251
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2011-09-14
- Assignees: Bayerische Motoren Werke Aktiengesellschaft; Kringlan Composites AG; BBS Motorsport GmbH
- Applicants: Bayerische Motoren Werke Aktiengesellschaft; Kringlan Composites AG; BBS Motorsport GmbH
- Inventors: Hubert BURLEFINGER; Markus TOMASINI; Niccolo PINI; Roman MUELLER
- Web page: https://patentgrep.com/patent/US20140191566A1

## CPC

- B60B 5/02: made of synthetic material
- B29C 70/302: {Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination}
- B60B 21/00: Rims (non-metallic B60B5/00; of high resiliency B60B9/00; capable of carrying more than one tyre B60B11/04; multiple rims on a single wheel body B60B11/06; of multi-part type B60B25/00; metal tyres B60C)
- Y10T 156/1002: with permanent bending or reshaping or surface deformation of self sustaining lamina
- B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A vehicle wheel having a rim, or a rim of a vehicle wheel, is provided wherein the rim consists of a fiber-reinforced plastic material in the form of several layers of a fiber-reinforced semi-finished plastic product. The layers are shaped to form a finished component in a press while heat is supplied. The rim conventionally consists of a rim well, whose two sides are adjoined by a rim shoulder, which transitions into a rim flange. The rim well is formed by several layers of a base laminate, which extends to the rim flange, between which layers further layers are inserted in the area of the rim shoulder as well as of the rim flange. The further layers have an essentially tangential fiber alignment.

## Claims

### Claim 1

A vehicle wheel, comprising:
a rim having a rim well, both sides of which are adjoined by a respective rim shoulder, and each rim shoulder transitioning into a rim flange, wherein
the rim well is formed by several layers of a fiber-reinforced synthetic semi-finished product of a base laminate extending up to the rim flange, and
further layers being arranged between said several layers in a region of the rim shoulder and the rim flange.

### Claim 2 (depends on 1)

The vehicle wheel according to claim 1, wherein said further layers have a substantially tangential fiber alignment.

### Claim 3 (depends on 1)

The vehicle wheel according to claim 1, wherein
the base laminate has at least two layers with a substantially tangential fiber alignment and other layers having an angular fiber alignment on the order of 45 degrees or 90 degrees with respect to the tangential fiber alignment of the at least two layers, and
the other layers with the angular fiber alignment being shaped by curved segments preformed in a thermal forming process which, when individual layers are placed on a performing tool of the press, are also placed there.

### Claim 4 (depends on 2)

The vehicle wheel according to claim 2, wherein
the base laminate has at least two layers with a substantially tangential fiber alignment and other layers having an angular fiber alignment on the order of 45 degrees or 90 degrees with respect to the tangential fiber alignment of the at least two layers, and
the other layers with the angular fiber alignment being shaped by curved segments preformed in a thermal forming process which, when individual layers are placed on a performing tool of the press, are also placed there.

### Claim 5

A rim of a vehicle wheel, the rim comprising:
a rim having a rim well, both sides of which are adjoined by a respective rim shoulder, and each rim shoulder transitioning into a rim flange, wherein
the rim well is formed by several layers of a fiber-reinforced synthetic semi-finished product of a base laminate extending up to the rim flange,
further layers being arranged between said several layers in a region of the rim shoulder and the rim flange.

### Claim 6 (depends on 5)

The vehicle wheel according to claim 5, wherein said further layers have a substantially tangential fiber alignment.

### Claim 7 (depends on 5)

The vehicle wheel according to claim 5, wherein
the base laminate has at least two layers with a substantially tangential fiber alignment and other layers having an angular fiber alignment on the order of 45 degrees or 90 degrees with respect to the tangential fiber alignment of the at least two layers, and
the other layers with the angular fiber alignment being shaped by curved segments preformed in a thermal forming process which, when individual layers are placed on a performing tool of the press, are also placed there.

### Claim 8

A method of manufacturing a vehicle wheel having a rim, the rim including a rim well adjoined on both sides by a respective rim shoulder that transitions into a rim flange, the method comprising the acts of:
placing a bottom layer of a fiber-reinforced synthetic semi-finished product on a pre-forming tool, wherein fibers of the bottom layer are aligned essentially in a circumferential direction of the rim;
placing an additional lower layer of a fiber-reinforced synthetic semi-finished product on the bottom layer, in which additional lower layer the fibers are aligned perpendicularly to the circumferential direction of the rim;
only in an area of the rim shoulder and the rim flange, placing several layers of fiber-reinforced semi-finished synthetic product on the layers previously arranged there, fibers of one or more of the several layers being aligned essentially in the circumferential direction of the rim;
applying an upper layer specifically in areas of the rim flange, rim shoulder and the rim well;
subsequently, in an area of the rim flange, applying several layers of fiber-reinforced semi-finished synthetic product whose fibers are aligned essentially in the circumferential direction of the rim; and
applying an uppermost layer of the base laminate in the area of the rim flange, the rim shoulder and the rim well.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the layers are applied such that the rim shoulder has a conical shape with a decreasing diameter toward a center plane of the rim.