VEHICLE WHEEL MANUFACTURING METHOD - CENTRAL MOTOR WHEEL CO LTD

Title:

VEHICLE WHEEL MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2011/105135

Kind Code:

A1

Abstract:

Disclosed is a method of manufacturing a vehicle wheel (1) capable of preventing forming defects when forming an outer rim portion (8) and/or an inner rim portion wherein a sound damping airspace (25) is disposed, and of attaining an operating effect that minimizes, by way of the sound damping airspace (25), cavity resonances that arise in a tire interior airspace (102). After a separation groove (55), comprising a curved groove bottom surface (55a), is formed between a ring-shaped wall portion (53) and a partition portion (22), the ring-shaped wall portion (53) is bent toward a flange portion (10a) and the ring-shaped wall portion (53) is welded to the flange portion (10a), forming a sound damping airspace (25) in an outer rim portion (8) and/or an inner rim portion, which communicates via a connecting gap (61) that is defined on the basis of the separation groove (55). The method facilitates stable formation of the connecting gap (61), thereby allowing easing internal pressure increases caused when air within the sound damping airspace (25) thermally expands in the vulcanization step, as well as alleviating forming defects due to internal pressure increases.

Inventors:

IKEDA AKIHIRO (JP)
FURUKAWA MASAHIDE (JP)

Application Number:

PCT/JP2011/050921

Publication Date:

September 01, 2011

Filing Date:

January 20, 2011

Export Citation:

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Assignee:

CENTRAL MOTOR WHEEL CO LTD (JP)
BRIDGESTONE CORP (JP)
IKEDA AKIHIRO (JP)
FURUKAWA MASAHIDE (JP)

International Classes:

B60B21/02; B21D53/30

Foreign References:

JP2003326904A	2003-11-19
JP2008126806A	2008-06-05
JP2003326904A	2003-11-19

Other References: