Patent ID: 7636081
Filing Date: 2009-12-22
Classification: G05G,Y10T

Abstract:
1. An origin returning mechanism of a pointing device having an operating body in which one end operably protrudes from an opening of a cover portion of a case body and which is movable depending on the operation toward a horizontal direction from an origin position that is a central position of the opening, the origin returning mechanism comprising: a first returning assisting plate arranged at a portion of the operating body located inside the case body, the plate being movable together with the operating body and having a reception hole penetrating in the thickness direction; a first biasing element for retaining the operating body at the origin position by biasing an outer circumference surface of the first returning assisting plate; a fitting block accommodated movably in and out of the reception hole of the first returning assisting plate; and a second biasing element for biasing the fitting block toward the cover portion of the case body, wherein the fitting block protrudes from the reception hole of the first returning assisting plate to fit into the opening of the case body by being biased with the second biasing element when the operating body is located at the origin position.