Accelerator apparatus
AssigneeDenso Corporation
InventorsTakehiro SAITO, Masahiro MAKINO, Hiroshi SAJI
Life of this patent
Estimating the term…
Abstract
A pedal spring urges a pedal spring receiving portion to rotate a manipulation member in an accelerator closing direction. The pedal spring has an end portion that contacts a first contact surface of a front segment. A hysteresis spring urges a hysteresis spring receiving portion, which is engaged with the manipulation member, in the accelerator closing direction. The hysteresis spring has an end portion that contacts a second contact surface of the front segment. A step surface is formed between the first contact surface and the second contact surface to limit movement of the end portion of the hysteresis spring.
Claims3
An accelerator apparatus comprising:
- a support member that is installable to a body of a vehicle;
- a shaft that is rotatably supported by the support member;
- a pedal boss portion that is fixed to an outer wall of the shaft and is rotatable integrally with the shaft;
- a pedal portion that extends from the pedal boss portion to an outside of the support member, wherein the pedal portion is depressable by a driver of the vehicle;
- a pedal-side urging member receiving portion that extends from the pedal boss portion;
- a first friction member that is placed between the pedal boss portion and the support member, wherein when the pedal boss portion is rotated in an accelerator opening direction, the first friction member is urged against an inner wall of the support member;
- a pedal-side urging member that has one end portion, which is engaged with the pedal-side urging member receiving portion, and another end portion, which contacts a first contact surface formed in the inner wall of the support member, wherein the pedal-side urging member urges the pedal-side urging member receiving portion to rotate the pedal boss portion in an accelerator closing direction that is opposite from the accelerator opening direction;
- a hysteresis boss portion that is engaged with the pedal boss portion and is rotatably placed on a radially outer side of the shaft, wherein when the pedal boss portion is rotated in the accelerator opening direction, a distance between the pedal boss portion and the hysteresis boss portion is increased;
- a hysteresis-side urging member receiving portion that extends from the hysteresis boss portion in a direction that coincides with an extending direction of the pedal-side urging member receiving portion;
- a second friction member that is placed between the hysteresis boss portion and the support member, wherein when the pedal boss portion is rotated in the accelerator opening direction, the second friction member is urged against the inner wall of the support member;
- a hysteresis-side urging member that has one end portion, which is engaged with the hysteresis-side urging member receiving portion, and another end portion, which contacts a second contact surface formed in the inner wall of the support member, wherein the hysteresis-side urging member urges the hysteresis-side urging member receiving portion to rotate the hysteresis boss portion in the accelerator closing direction;
- and
- a rotational angle sensing device that senses a rotational angle of the shaft relative to the support member, wherein one of the pedal-side urging member and the hysteresis-side urging member contacts a step surface formed between the first contact surface and the second contact surface.
Dependencies are inferred from the claim text.