| 摘要 |
The drive belt outlet consists of a single component (10) clipped from the outside into an aperture in the side wall (2) of the shutter housing adjacent to the flanged pulley (3) on the shutter roller (4). The outer end of the outlet component is circular and has a collar (13) with rounded edges; its middle portion is cylindrical, and its inner end (14) is partially closed, leaving a curved slot (15) for the belt (5) covering at least 180 degrees and having rounded edges.
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