| 摘要 |
A link rod (K) of a wiper for a motor vehicle, comprising: a cylindrical section (12); a pair of flat sections (11A, 11B) formed at opposite ends of the cylindrical section (12), respectively by crushing the opposite ends of the cylindrical section (12) from above and below; and a pair of resinous coupling joints (13A, 13B) mounted on the flat sections (11A, 11B), respectively; wherein a first hole (14A, 14B) having a large diameter and a second hole (15A, 15B) having a small diameter are, respectively, formed at outer and inner portions of each of the flat sections (11A, 11B) as viewed in a longitudinal direction of the cylindrical section (12); wherein a gap (31A, 31B, 32A, 32B) opens into an axially intermediate portion of a peripheral surface of the second hole (15A, 15B) such that interior of the cylindrical section (12) is communicated with a mouth (30A, 30B) of the second hole (15A, 15B) through the gap (31A, 31B, 32A, 32B); wherein each of the coupling joints (13A, 13B) includes a joint portion (40B) disposed at the first hole (14A, 14B) and seals the second hole (15A, 15B) and the gap (31A, 31B, 32A, 32B), and a method of manufacturing the link rod (K). <IMAGE> |
