| 摘要 |
The adjustable upper beam with a cuttable blind assembly is mainly made up of a blind, a movable upper beam having a telescopic inner tube and outer tube, two retaining clamps, a pull cord wherein the upper side of the blind is held in place by the upwardly and inwardly bent bottom edges of the inner and outer tube of the movable upper beam. The inner and outer tube have a pair of symmetrically protruded registration lugs for registration with the locking holes of the retaining clamps in assembly. The front and rear clamping plates of the retaining clamps can hold the inner and outer tubes firmly in place so as to make the clamping of the retaining clamps against the blind in a firmer manner. The front and rear clamping plates are provided with a hole and a cord seat for the passage and positioning of the pull cord whereby the blind can be adjusted of its size in a DIY manner for fixing to windows of various dimensions.
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