| 摘要 |
A column member for an elevating device has a body, a channel, an opening part, and an internal screw. The channel penetrates the body. An opening part is formed on a front surface of the body, and is connected to the channel. A width of the opening part is shorter than that of a diameter of the channel. The internal screw is formed on an internal surface. A rotation member is located in the channel to be geared with the internal screw of the channel. The diameter of the rotation member is longer than that of the opening part to prevent the rotation member from being separated from the opening part. The column member is easily fixated to the rotation member without a sliding element, and the combination of the column member and the rotation member is safe. |
