How would you design a snap fit? Where are snap fits used most often? How much force does it usually take to insert a snap fit?
Cross-referencing this post here: The buckle on your backpack is breaking. How would you redesign the part to ensure this doesn't happen? - #2 by hardwarefyi
Main design considerations for snap fits are with permissible deflection of the material and staying within the allowable strain limits. Snap fits are used most often for plastic to plastic interfacing connections; instead of having additional screws, these act as mechanical locking features to secure parts in place. [
Attached here is a common guide for different types of snap fit cross-sections and shapes and while we’re at it, another guide for plastic design for manufacturing (DFM) considerations!
GE_plastic_design.pdf (103.1 KB)
Snap Fit Design - Bayer.pdf (2.5 MB)
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