| 摘要 |
PURPOSE:To prevent falling of a ball joint by providing the ball joint comprising a cylindrical portion with its diameter larger than the diameter the opening edge of a bearing hole and spherical surface portions disposed on both ends of the cylindrical portion. CONSTITUTION:A ball joint 30 comprises a cylindrical portion 32 coaxial with a connecting rod 28 and spherical portions 33 formed spherical at both end outer peripheral edges of the cylindrical portion 32. A bearing hole 34 for supporting the ball joint 30 is disposed on a shoe 31. As the diameter D of the cylindrical portion 32 is larger than the opening edge diameter (d) of the bearing hole 34, the ball joint 30 is kept from falling off the bearing hole 34.
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