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Positioning Tab in Hub-To-Shaft Fastening Disclosure Number: IPCOM000046943D
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07

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Holland, EC Wustrau, R [+details]


For fastening and positioning to a shaft 1 a hub 2, the latter is provided with an incorporated leaf spring 3 carrying a positioning tab 4 on its end. The tab 4 rests in a matching groove 5 formed on shaft 1. Upon assembling hub 2 to shaft 1 by shifting it from its end part to its inner part, the flexible leaf spring 3 deflects away from the shaft axis and its tab 4 snaps into groove 5, thus fixing and positioning hub 2 relative to shaft 1. Using this design, no setscrews are needed and assembling is simplified, making it extremely well applicable for automated assembling techniques. Fig. 1 depicts, in side and end views, shaft 1 having a flat 7. The groove 5 is formed in this flat so that tab 4 of leaf spring 3 matches in it.