| 摘要 |
An interlocking assembly for mounting a display unit on a structure so as to permit swivelling positional adjustment of the display unit relative to the structure includes a pair of interlocking portions. An aperture or slot is defined in one portion and a protrusion with an enlarged flangelike asymmetrical element is formed in the other portion. During assembly, the protrusion is inserted into the aperture or slot; a resilient tab prevents disengagement of the enlarged element from the aperture or slot. The enlarged element, for example, has a ledge defining an underside surface and an outer surface above the underside surface. The resilient tab is disposed adjacent the aperture or slot so that the outer surface of the ledge abuts against the outer surface of the tab to deflect the tab inward during assembly, to release the tab when the enlarged element is moved within the aperture or slot, and to prevent disengagement of the protrusion from the aperture or slot by interference of the underside surface of the ledge with an inner surface of the tab. The angular movement between the interlocking portions is limited to a predefined range by a pair of protruding stops engaged in respective portions of a figure-eight shaped recess. |
