Title:
WHEEL DISC FOR MOTOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/136617
Kind Code:
A1
Abstract:
In an anchoring groove forming step for a wheel disc (20), the inner peripheral end of a first hub hole surrounding part (41) is crushed by a protruding part (D21) of a reverse side mold (D2) and a depressed part (D31) of an obverse side mold (D3). Thus, an anchoring groove (50) is formed in the reverse surface of the first hub hole surrounding part (41), thereby excess thickness is pressed into the depressed part (D31), and a protrusion (51) is formed in the obverse surface of the first hub hole surrounding part (41). Therefore, the anchoring groove (50) can be formed in the reverse surface of the hub hole surrounding part (30) without requiring a step for cutting the excess thickness.
Inventors:
YAMADA SHINJI (JP)
Application Number:
PCT/JP2014/056290
Publication Date:
September 17, 2015
Filing Date:
March 11, 2014
Export Citation:
Assignee:
CENTRAL MOTOR WHEEL CO LTD (JP)
International Classes:
B60B3/04; B21D53/26
Foreign References:
| JP2003126934A | 2003-05-08 | |||
| JPS62103602U | 1987-07-02 | |||
| GB2031816A | 1980-04-30 | |||
| JPS60132902U | 1985-09-05 |
Attorney, Agent or Firm:
PROSPEC PATENT FIRM (JP)
Patent business corporation Pros Peck patent firm (JP)
Patent business corporation Pros Peck patent firm (JP)
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