| 摘要 |
An adjustable support arm, eg for a display screen, has an upright rigid support post 1 with a mounting bracket 2 at its base. The post carries a sliding support 12 for an arm 5, the support being pivotable about the post and demountable from the top thereof. The support sits on a collar 14 which can be set at a fixed height by way of a U-shaped pin arrangement 17 (Fig 2) which engages portions 4 of reduced diameter on the post. The arm may have one or more sections 6,7 and is pivotal on at least one vertical axis 8,20. A bracket 19 at the end of the arm has an attachment, eg plate 24, to which a supported item is attached and which is pivotal on a horizontal axis 26. The post and collar may alternatively be threaded (Fig 11) with the collar being adjusted vertically by rotation. |
