Polymer Double Cantilever Positive Snap
Original Publication Date: 1987-Jan-01
Included in the Prior Art Database: 2005-Feb-02
This article describes a polymer double cantilever positive snap which is highly resistant to accidental release. Referring to Fig. 1, the snap includes a base member 10 with a resilient hook-shaped post 12 having a shoulder 14 at one end of the hook. The base member 10 includes a lip 16. A generally L-shaped member 18 can be snapped into place by positioning one end of the L under the lip 16 and pivoting the member 18 in a counterclockwise direction about a pivot point 20. As the member 18 is pivoted into position, the shoulder 14 rides up the surface 22 of member 18 and makes a first snap onto the top surface 24. By applying the force in the direction indicated by the arrow 26 in Fig. 2, the post 12 can be forced to the right until the shoulder 14 clears member 18.