US Patent No. 10,768,658

MULTI-DIRECTIONAL INPUT DEVICE


Patent No. 10,768,658
Issue Date September 08, 2020
Title Multi-directional Input Device
Inventorship Mitsuhiro Asano, Yao (JP)
Assignee HOSIDEN CORPORATION, Yao-Shi (JP)

Claim of US Patent No. 10,768,658

1. A multi-directional input device, comprising:a case having a bottom plate;
a pair of upper and lower arms supported to be movable in two orthogonal directions in the case, the pair of upper and lower arms each having an elongated hole extending in a direction orthogonal to a moving direction;
an operation shaft that is rotatable in a state of penetrating each elongated hole;
an actuating member that is supported to be movable in an axial direction of the operation shaft at a lower end of the operation shaft projecting downward of the lower arm, and is provided with a downward convex spherical trapezoidal portion whose diameter decreases downward;
a compression coil spring that is provided between the operation shaft and the actuating member, and presses the downward convex spherical trapezoidal portion against the bottom plate to return the operation shaft to a neutral state; and
a plurality of electric components operated via each arm by rotation of the operation shaft, wherein
an upward convex spherical trapezoidal portion whose diameter decreases upward is provided at a lower end of the operation shaft projecting downward of the lower arm,
a receiving portion for the upward convex spherical trapezoidal portion is provided in the case,
the receiving portion has a receiving surface that is configured with a spherical surface having a radius of curvature identical to a radius of curvature of a spherical zone of the upward convex spherical trapezoidal portion, the receiving surface against which a spherical zone of the upward convex spherical trapezoidal portion is pressed from downward by the compression coil spring, and
the operation shaft is supported to be rotatable about a center of curvature of the receiving surface.