| 摘要 |
<p>A fan comprising an impeller (1), a transmission rod (2) connected to the center of the impeller (1), and a connecting apparatus (3). The connecting apparatus (3) comprises a sleeve cylinder (4), a fixing block (6) that rotates along with a motor (100), a sliding block (7), and a spring (9). A partition wall (40) is provided within the sleeve cylinder (4). The partition wall (40) protrudes towards one side forming a protruding column (42). The partition wall (40) and the protruding column (42) are provided with a friction hole (44) corresponding to the diameter of the transmission rod (2). The sleeve cylinder (4) is provided with an engaging hook (46). An accommodating hole (60) corresponding to the protruding column (42) is provided at one extremity of the fixing block (6). The sliding block (7) is inserted within the sleeve cylinder (4). An engaging groove (70) is provided on a sidewall of the sliding block (7). A part of the sliding block (7) is provided with a through hole (72), while another part is provided with a perforation (74). A stopper part (76) is formed at where the through hole (72) and the perforation (74) are adjacent to each other. The spring (9) is arranged within the sliding block (7). The transmission rod (2) runs through the through hole (72) and the perforation (74) then is inserted into the friction hole (44) and fitted tightly therein. The protruding column (42) is correspondingly inserted into the accommodating hole (60). The sliding block (7) slides into the compression spring (9) inside the sleeve cylinder (4). The engaging hook (46) is hooked and held at the bottom surface of the sliding block (7).</p> |
