| 摘要 |
The system consists of a rectangular base on the end of the tube (1) which fits into an aperture (4) of corresponding size and shape in a supporting panel (2). The base and aperture are made with a series of matching tenons (9,10,11,12) and mortises (5,6,7,8) on their inner and outer surfaces, with space between them containing locking elements, e.g. in the form of sliding bars or spring-loaded rods. Slots (26) in the panel allow a tool to be inserted to slide the bars and allow the bases to be fitted or removed. Once fitted, the bases are held reliably in position. Where the locking elements are in the form of rods they can be released by pushing outwards against the action of springs. The base and/or the panel can be moulded from a synthetic material.
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