Origin returning mechanism of pointing device and pointing device using the same

摘要

A pointing device includes an operating body 200 in which one end operably protrudes from an opening 111 a of a cover portion 111 of a case body 100 and which is movable depending on the operation toward a horizontal direction from an origin position alpha; a first returning assisting plate 510 provided with the operating body 200 and having a reception hole 511 penetrating in the thickness direction; a first biasing means 530 which retains the operating body 200 at the origin position alpha by biasing an outer circumference surface of the first returning assisting plate 510 ; a fitting block 540 accommodated movably in and out of the reception hole 511 ; and a second biasing means 550 which biases the fitting block 540 toward the cover portion 111 . The fitting block 540 protrudes from the reception hole 511 to fit into the opening 111 a of the cover portion 111 by being biased with the second biasing means 550 when the operating body 200 is located at the origin position alpha.