ACCELERATION DEVICE

摘要

Each of a cross sectional shape of a contacting portion of a stopper arm and a cross sectional shape of an outer peripheral surface of a pedal shaft is formed in a circular shape, wherein a curvature radius is equal to each other. Each of a cross sectional shape of a stopper surface of a supporting body and a cross sectional shape of an inner peripheral surface of a bearing portion is formed in a circular shape, wherein a curvature radius is equal to each other. A distance between a center of a first virtual circle formed by the contacting portion and a center axis of the pedal shaft is made to be equal to a distance between a center of a second virtual circle formed by the stopper surface and a center axis of the bearing portion. An angle of the stopper arm with respect to the supporting body is not changed, even when the center axis of the pedal shaft is displaced with respect to center axis of the bearing portion.

主权项

1. An acceleration device for an automotive vehicle comprising:
an acceleration pedal to be operated by a vehicle driver; a supporting body to be fixed to a vehicle body; a pedal shaft rotatably supported by a bearing portion formed in the supporting body; a boss portion attached to and rotated together with the pedal shaft; a stopper arm connected to the boss portion and arranged in an inner space formed by the supporting body, the stopper arm having a contacting portion which is brought into contact with a stopper surface of the supporting body when the acceleration pedal is in an acceleration fully-closed position; a pedal arm for connecting the acceleration pedal to the boss portion; a rotational angle detecting unit for detecting a rotational angle of the pedal shaft with respect to the supporting body; and a biasing member for biasing rotation of the pedal shaft in an acceleration closing direction, wherein each of an outer surface of the contacting portion and an outer peripheral surface of the pedal shaft is formed by a curved surface, and a cross-sectional shape for the outer surface of the contacting portion and a cross-sectional shape for the outer peripheral surface of the pedal shaft are congruent to each other on a virtual plane perpendicular to a center axis of the pedal shaft, wherein each of the stopper surface and an inner peripheral surface of the bearing portion is formed by a curved surface, and a cross-sectional shape for the stopper surface and a cross-sectional shape for the inner peripheral surface of the bearing portion are congruent to each other on the virtual plane perpendicular to the center axis of the pedal shaft, wherein a distance between a center of a first virtual round shape and the center axis of the pedal shaft is equal to a distance between a center of a second virtual round shape and a center axis of the bearing portion, wherein the first virtual round shape includes the curved surface of the contacting surface as a part of the first virtual round shape on the virtual plane perpendicular to the center axis of the pedal shaft, and wherein the second virtual round shape includes the curved surface of the stopper surface of the supporting body as a part of the second virtual round shape on the virtual plane perpendicular to the center axis of the pedal shaft.