Elastic dome

Abstract

An elastic dome is used in a keyswitch structure and includes a bottom ring portion, a top ring portion, an outer oblique annular wall, a trigger post, and an inner oblique annular wall. The top ring portion is located above the bottom ring portion in a vertical direction. The outer oblique annular wall obliquely connects the top ring portion and the bottom ring portion between the top ring portion and the bottom ring portion. The trigger post is located inside the outer oblique annular wall. The inner oblique annular wall extends obliquely downward from the inside of the top ring portion and is connected to the trigger post. In an embodiment, the bottom ring portion has a narrowed upper portion and a lower portion connected to the upper portion. In another embodiment, when the elastic protrusion is compressed to a depressed state, the connection between the upper portion and the lower portion is higher than the connection between of the top ring portion and a top conical surface of the inner oblique annular wall. In another embodiment, the inner oblique annular wall is thinner in thickness from the top ring portion to the trigger post.

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