SNAP-FITS FOR assembly and dis...

SNAP-FITS FOR assembly and disassemblyTICONA

SNAP-FITS FOR ASSEMBLY AND DISASSEMBLY

Presented by: Tim Spahr Technical Service Engineer

November 1991
(Revised 1/00)

T i c ona A bus i nes s of Cel anes e A G

GENERAL DISCUSSION
An economical and quick method of joining plastic parts is by a snap-fit joint. A snap-fit joint can be designed so it is easily separated or so that it is inseparable, without breaking one of its components. The strength of the snap-fit joint depends on the material used, its geometry and the forces acting on the joint. Most all snap-fit joint designs share the common design features of a protruding ledge and a snap foot. Whether the snap joint is a cantilever or a cylindrical fit, they both function similarly. When snap-fit joints are being designed, it is important to know the mechanical stresses