| 摘要 |
A jack hold down apparatus is provided for threadably engaging an elongate, projecting externally threaded post member and advancing and retracting therealong for respectively engaging and disengaging an edge part of an automotive jack for holding the same in, and releasing the same from, engagement with a given surface. The apparatus comprises a first component comprising a jack-engaging member including a body having a through opening for receiving the post member therethrough and defining an axis, a radially projecting lip portion for engaging an edge part of the jack, and an axially projecting connecting portion for receiving a second component. The second component comprises a manually graspable knob having a through opening coxially alignabel with the through opening of the first component and a cooperating connecting portion alignable with the first component connecting portion for assembly therewith in a generally radial direction, so as to be non-removable therefrom in the axial direction. A post-engaging member comprises an internally threaded body internally sized to threadably engage the post and externally sized to fit at least partly within one of the first and second components, and an assembly member has an external configuration for interfitting within at least portions of both of the first and second component aligned through openings to thereby hold the first and second components and the post-engaging member together in assembled condition, such that rotation of the knob results in threadable advancement and retraction of the assembly thus formed relative to the post member.
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