Indicator instrument for vehicle
AssigneeDenso Corporation
InventorsTatsuya Sasaki, Shigenori Yokochi
Life of this patent
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Abstract
An indicator instrument for a vehicle includes a rotational indicator that indicates a vehicle state parameter, and a stepper motor that rotates the rotational indicator. The stepper motor includes an output gear, a reduction mechanism, a motor casing housing the output gear and the reduction mechanism. The output gear includes an output shaft rotatable together with the rotational indicator, and a last-stage gear extending radially outward from the output shaft. The reduction mechanism includes a reduction gear engaged with the last-stage gear. The rotational indicator includes a rotational shaft press-fitted to a specified portion of the output shaft in the motor casing. The specified portion is displaced from the last-stage gear in an axial direction of the output shaft.
Claims6
An indicator instrument for a vehicle, comprising:
- a rotational indicator configured to indicate a vehicle state parameter;
- and
- a stepper motor configured to rotate the rotational indicator, wherein
- the stepper motor includes:
- an output gear including an output shaft rotatable together with the rotational indicator, and a last-stage gear extending radially outward from the output shaft;
- a reduction mechanism including a reduction gear engaged with the last-stage gear;
- and
- a motor casing housing the output gear and the reduction mechanism,
- the rotational indicator includes a rotational shaft press-fitted to a specified portion of the output shaft in the motor casing,
- the motor casing includes a bearing configured to support the output shaft,
- the specified portion is between and displaced in the axial direction from the last-stage gear and a supported portion of the output shaft supported by the bearing,
- the specified portion of the output shaft extends radially inward toward the rotational shaft and contacts the rotational shaft, and
- the supported portion of the output shaft is separated from the rotational shaft by an empty gap.
Dependencies are inferred from the claim text.