| 摘要 |
<p>A boxing exercise apparatus is mounted on a stand (20). A pivoted support arm (32) provides a strike absorbing means. In a first embodiment, the support arm is connected to the stand (20) with a spring (42) joined to a rigid rod. The rigid rod is preferably positioned in a neutral position with an integral positioning means. Displacement of the support arm away from the neutral position toward a rocked-back position is counteracted by the spring (42). In a second embodiment, the apparatus further includes a second spring (21) joining segments of the stand so as to bias lateral movement of the support arm. When the support arm is deflected, the first spring (42) and the second spring (21) retard the motion of the support arm within two degrees of freedom. A friction adjustment is provided so as to adjust motion stiffness. The adjustment provides a novel approach using a friction washer.</p> |
