| 摘要 |
A column member has a body (10), a channel (11), an opening (12) and an internal thread (13). The channel (11) is formed through the body (10). The opening (12) is formed in a front surface of the body (10) and is in communication with the channel (11). The width of the opening (W) is shorter than the diameter of the channel (D). The internal thread (13) is formed on an inner surface of the channel (11). A rotating member (44) is located in the channel (11). The diameter of the rotating member (44) is longer than the width of the opening (12) to prevent the rotating member (44) from coming off the column member via the opening (12). The column member easily holds the rotating member (44), and the combination of the column member and the rotating member (44) is safe. |
