| 摘要 |
<p>A toe protector (14), or a metatarsal protector (16, 18), or a combined protector (14, 16, 18) for safety footwear are molded from plastics material either integrally or as separate parts and then attached to one another for storage and incorporation into the footwear. Each protector part comprises a generally U-shaped body provided at the central part of its top outer surface with a force receiving part (24, 26 or 56, 58) that overlies the central part with its lower surface spaced from the central part and of concave shape toward the central part. In an integrally molded structure each force receiving part (24, 26) has two transversely spaced integral junctions (28, 30) with the respective body; alternatively they are molded separately (56, 58) and the force receiving part has longitudinal edges (64, 66) that engage two mutually facing, spaced surfaces (52, 54) on the body part. Crushing and impact forces applied to the force receiving part (24, 26 or 56, 58) act to flatten it and to press it toward the central part with conversion of such forces to corresponding longitudinal forces distributed along the integral junctions or the butting surfaces and compression forces in the sides of the U. The separate force receiving plate member (56, 58) may comprise a thin molded sheet of plastics material or a thin formed sheet of metal. Each protector body part and force receiving plate member may be divided along its length by transversely extending slots (42, 46, 60) to increase its longitudinal flexibility so as to accommodate the action of walking.</p> |
