| 摘要 |
A pillar structure capable of being raised and lowered according to an embodiment of the present invention may comprise: a first pillar member including a base member at the bottom thereof, and fixed and attached to a floor surface; a second pillar member formed having the same shape as the first pillar member and an inner diameter less than the first pillar member, formed to be inserted inside the first pillar member, and formed to be capable of being raised and lowered; a third pillar member formed having the same shape as the first and second pillar members and an inner diameter less than a second pillar, and formed to be inserted inside the second pillar member and capable of being raised and lowered; and a raising and lowering member for raising and lowering the second and third pillar members through manual power. |
