Patent ID: 7474353

Claim:
A digital camera comprising: a switch device which includes a knob having a shaft portion; a body of the digital camera having a shaft portion insertion hole into which the shaft portion of the knob is rotatably inserted; a connecting terminal made of material having springy characteristic which is attached to an inner face side of the body and adapted to rotate along with the rotation of the knob; and a switch board having divided arc-shaped patterns which are adapted to be contacted with the connecting terminal, wherein: the knob includes: a plurality of body engaging claws which are provided on a peripheral face of the shaft portion of the knob, and adapted to be engaged with an inner face of the body; a plurality of terminal engaging portions which are provided on the peripheral face of the shaft portion of the knob, and respectively have inclined face parts; a central protrusion which is provided on an end face of the shaft portion of the knob at a position corresponding to a rotation center; and a rotation detent protrusion which is provided on the end face of the shaft portion of the knob spaced from the central protrusion by a determined distance; the body includes a plurality of rotation positioning holes for positioning rotation angles of the knob which are arranged on the inner face of the body circumferentially at a determined radius from the rotation center of the knob, each having an oval shape extending in a radial direction with respect to the rotation center of the knob; and the connecting terminal includes: a bottom plate part which is attached to the end face of the shaft portion of the knob, and has a first hole adapted to be engaged with the central protrusion of the knob and a second hole adapted to be engaged with the rotation detent protrusion; a plurality of knob engaging claws which are projected from an outer circumference of the bottom plate part toward the knob, and adapted to be engaged with a plurality of the terminal engaging portions of the knob; a contact part which is projected from the outer circumference of the bottom plate part to extend toward the switch board, and adapted to come into contact with the switch board; and a positioning projection in a semicircular shape which is projected from the outer circumference of the bottom plate part to extend toward the knob, and so designed as to be inserted into a plurality of the rotation positioning holes in an oval shape provided in the body, from the inner face of the body.