| 摘要 |
A mounting unit (11) for a attaching a working unit such as a video projector to a mounting surface which can be horizontal or vertical or at some angle intermediate the horizontal and the vertical comprising: an anchorage (12) whereby the unit can be attached to the mounting surface; a beam (13); a carrier (18) comprising in combination a holding plate (19) and a mounting plate; the carrier being adapted to provide for the attachment of a working unit to the mounting plate; a first pivot (20a) whereby a first end of the beam is pivotably attached to the anchorage to enable the beam to pivot about a first axis (a1); a second pivot whereby the other end of the beam to the first end is pivotably attached to the holding plate to enable the holding plate to pivot about a second axis (a2) parallel to the first axis; a third pivot (24) whereby the holding plate can pivot about a third axis perpendicular to the second axis; a fourth pivot (23) whereby the holding plate can pivot about a fourth axis (a4) perpendicular to the second and third axes; the carrier including mechanism whereby the mounting plate can be rotated about an fifth axis parallel to the holding plate. |
