Land vehicles – Wheeled – Running gear
Patent
1996-04-23
1997-12-09
English, Peter C.
Land vehicles
Wheeled
Running gear
280673, 298972, 527316, 74588, B60G 700
Patent
active
056952139
ABSTRACT:
A suspension arm in which the accuracy of a bush supporting portion is improved. The suspension arm is formed by respectively welding both side portions of an upper plate member and both side portions of a lower plate member to each other, the upper plate member and the lower plate member each having a substantially U-shaped cross-sectional configuration. The bush supporting portion is formed in such a manner that an upper cylindrical portion and a lower cylindrical portion are respectively formed by burring at rear ends of the upper plate member and the lower plate member. Further, clearances are respectively formed between the side portions of the upper plate member and the upper cylindrical portion, and between the side portions of the lower plate member and the lower cylindrical portion. Accordingly, there is no possibility that the heat generated upon welding is directly transmitted to the upper cylindrical member and the lower cylindrical member, so that the accuracy of the bush supporting portion can be improved.
REFERENCES:
patent: 3121348 (1964-02-01), Reed
patent: 4473241 (1984-09-01), Von Der Ohe et al.
Patent Abstracts of Japan, JP-A-7 315 025, Dec. 5, 1995, Masanobu Nakamura, "Arm for suspension and its Manufacture".
Toyota Technical Disclosure No. 4450, (1992).
Nakamura Daisuke
Sugimoto Naoyasu
Ueno Yukikazu
English Peter C.
Toyota Jidosha & Kabushiki Kaisha
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