Patent ID: 8028593

Claim:
A click apparatus comprising: a lower case having a middle hole; an upper case that has a penetration hole and that is opposed to the lower case; an inner case that has a hollow section and that is provided between the lower case and the upper case; a rotation body in which a flange section is positioned in the hollow section of the inner case, the flange section is structured so that an upper face includes an inner concavo-convex section and an outer concavo-convex section that have a concavo-convex relation on concentric circumferences, respectively, and a lower face includes the inner concavo-convex section and the outer concavo-convex section at positions plane-symmetrical to the upper face, respectively, a support section downwardly protruding from the center of the flange section is supported by the middle hole of the lower case, and an operation section upwardly protruding from the center of the flange section is supported by the penetration hole of the upper case and can be rotated; an upper face click spring that has an inner elastic contact projection sliding over the inner concavo-convex section of the upper face while having elastic contact thereto and an outer elastic contact projection sliding over the outer concavo-convex section of the upper face while having elastic contact thereto and that is made of elastic material provided at the lower face of the upper case; and a lower face click spring that has an inner elastic contact projection sliding over the inner concavo-convex section of the lower face while having elastic contact thereto and an outer elastic contact projection sliding over the outer concavo-convex section of the lower face while having elastic contact thereto and that is made of elastic material provided at the upper face of the lower case, wherein: when the operation section is rotated, two of the inner elastic contact projections and two of the outer elastic contact projections of the two click springs are slid over the inner concavo-convex section and the outer concavo-convex section of the upper face and the lower face of the flange section, respectively, while having elastic contact thereto.