Controller and portable electronic apparatus

摘要

A controller includes a housing and at least one key provided for protruding and retreating movement on the housing. The key includes: a body formed in a transversely elongated configuration elongated in a first direction; and a first stem positioned on one end side of the body in the first direction and extending along a third direction which is substantially perpendicular to the first direction and a second direction which is a protruding direction of the key from the housing. The housing includes: a biasing member for biasing the key in the second direction; and a first restricting portion positioned on the second direction side with respect to the first stem for engaging with the first stem biased by the biasing member.