| 摘要 |
PURPOSE:To permit frequency turn of a door mirror and prevent vibration by arranging a cylinder made of synthetic resin and an annular plate made of hard metal between a stay base and a stay. CONSTITUTION:Onto the cylinder part 4 of a stay base (c), a cylinder 15 is put which is made of synthetic resin and has an annular end plate part 11 at the top part and has the skirt part 12 on the outer periphery of the end plate part 11, and on the upper surface of the end plate part 11, an annular plate 13 made of hard metal is fixed. Between the base 6 of the concaved close part 5 formed on a stay (b) and the annular plate 13, three steel balls (d) are interposed at an equal pitch, and the ball (d) is sunk more deeply than the radius onto the base 6 of the concaved close part 5, and on the annular plate 13, ball inserting holes 16 are formed. When the door mirror part (a) is turned by hand, the ball rises to the surface from the ball inserting hole 16, for the ball (d) is sunk deeply onto the base 6 of the concaved cylinder part 5, and when the ball (d) turns by 1 pitch (p), the ball is sunk into the next hole 16 and can not move at last. Due to the cylinder body 15 interposed, large vibration is lightened and absorbed. |
