| 摘要 |
An expandable broadhead for a hunting arrow includes a first elongate member having a rear end adapted to be releasably attached to the front end of an arrow shaft and a longitudinally extending forward portion. There is a second elongate member that has a tipped front end and a rearwardly extending portion adapted to slidably connect with the longitudinally extending forward portion of the first member, and for guiding the second member in axial movement relative to the first member from a forward position to a rearward position. Each of a pair of blades with sharpened outer edges has a front end that is pivotally connected to the second elongate member. There is a pair of linking arms, each arm having a rear end that is pivotally connected to the first elongate member and a forward end that pivotally connects with a blade at a point therealong spaced from the front end of the blade. The arrowhead has a first configuration in which the blades are retracted in a low-profile aerodynamic configuration, and in which the second elongate member is in its forward position. When the tipped portion of the second elongate member makes impact with a target, the aforedescribed construction will allow force of impact to move the second elongate member towards the first elongate member and to urge outwardly the connection point of each linking arm and blade to move the blades to an extended, divergent configuration.
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