| 摘要 |
A ball screw device includes a ball nut having an inner thread formed by a number of helical groove portions and helical ridges, and an opening and a depression communicating with each other, and a channel communicating with the depression of the ball nut, a radially inserted deflecting member has a block engaged into the opening of the ball nut and an extension extended from the block and engaged into the depression of the ball nut for anchoring the deflecting member to the ball nut. A fastener may be engaged through the deflecting member and engaged with the ball nut for securing the deflecting member to the ball nut.
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