| 摘要 |
A seat post assembly provided for position the seat with support beam, the seat post assembly is provided on the bottom thereof with two locking blocks and comprising: a post; a head mounted on top of the post and provided with two threaded positioning surfaces which having an axial hole; two clamp elements assembled to both sides of the head, each of the clamp elements provided with a threaded jointing surface which having a through hole, and a locking groove; a locking unit passing through the through hole of the clamp elements and the axial hole of the head for enabling the clamp elements to be locked with the head and positioning the locking blocks into the locking groove.
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