| 摘要 |
<p>A ratchet buckle for tightening and tensioning straps which include a bifurcated frame member (11) with a pair of oppositely positioned parallel arms (12, 13) between which a reel member (14) and ratchet wheels (16, 17) are rotatably mounted. The reel member (14) is formed from a pair of oppositely positioned curved plates (18, 19). This reel member is reinforced structurally by means of a spreader bar insert member (22) which is placed between the plates (18, 19) and which has a slot (27) formed in the centre thereof through which a strap to be tensioned is reeved. The insert member (22) has a pair of similar ridge portions running along the outer surfaces of the portions thereof forming the walls of the slot (27) and a pair of wing portions at each of the opposite ends thereof, these wing portions extending in a direction normal to the longitudinal axis of the slot (27) and being fitted between the edges (18a, 19a) of the curved plates (18, 19).</p> |
