Shift position detection apparatus for variable speed gear
First Claim
1. A shift position detection apparatus for a variable speed gear, comprising:
- a clutch member disposed for movement in an axial direction on a power transmission shaft;
a shift shaft disposed so as to extend in parallel to said power transmission shaft;
a shift fork coupled and attached to said shift shaft and having an end engaged with said clutch member, said shift fork being configured wherein in response to a shift operation, said shift shaft and said shift fork are moved in the axial direction to move said clutch member in the axial direction on said power transmission shaft to select a shift position;
a plurality of shift detection portions provided on said shift shaft or said shift fork in a corresponding relationship to a plurality of shift positions; and
a plurality of position sensors individually disposed in an opposing relationship to said shift detection portions, wherein the movement of said shift detection portions in the axial direction by the movement of said shift shaft in the axial direction is detected by said position sensors to detect the shift position; and
at least two of said plurality of shift detection portions are disposed at different positions on substantially a same plane perpendicular to the axis of said shift shaft.
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Accused Products
Abstract
A shift position detection apparatus for a variable speed gear wherein a shift shaft is moved in an axial direction to perform a speed changing operation. A variable speed gear includes a clutch sleeve disposed for movement in an axial direction on a counter shaft with a shift shaft disposed so as to extend in parallel to the counter shaft. A shift fork is coupled and attached to the shift shaft and has an end engaged with the clutch sleeve. The clutch sleeve is moved in the axial direction through the shift fork to select a shift position. A shift position detection apparatus includes F, R and N shift detection portions provided on the shift fork. The F shift detection portion and the R shift detection portion are spaced by approximately 60 degrees in a circumferential direction on substantially the same plane perpendicular to the axis of a cylindrical portion.
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Citations
20 Claims
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1. A shift position detection apparatus for a variable speed gear, comprising:
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a clutch member disposed for movement in an axial direction on a power transmission shaft;
a shift shaft disposed so as to extend in parallel to said power transmission shaft;
a shift fork coupled and attached to said shift shaft and having an end engaged with said clutch member, said shift fork being configured wherein in response to a shift operation, said shift shaft and said shift fork are moved in the axial direction to move said clutch member in the axial direction on said power transmission shaft to select a shift position;
a plurality of shift detection portions provided on said shift shaft or said shift fork in a corresponding relationship to a plurality of shift positions; and
a plurality of position sensors individually disposed in an opposing relationship to said shift detection portions, wherein the movement of said shift detection portions in the axial direction by the movement of said shift shaft in the axial direction is detected by said position sensors to detect the shift position; and
at least two of said plurality of shift detection portions are disposed at different positions on substantially a same plane perpendicular to the axis of said shift shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A shift position detection apparatus for a variable speed gear, comprising:
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a clutch member disposed for movement in an axial direction on a power transmission shaft;
a shift shaft extending substantially in parallel to said power transmission shaft;
a shift fork operatively coupled and attached to said shift shaft and having a first end engaged with said clutch member, in response to a shift operation said shift shaft and said shift fork are moved in an axial direction to selectively move said clutch member in the axial direction on said power transmission shaft to select a shift position;
a plurality of shift detection portions provided on said shift shaft or said shift fork in a corresponding relationship to a plurality of shift positions; and
a plurality of position sensors individually disposed in an opposing relationship to one of said plurality of shift detection portions, wherein the movement of said plurality of shift detection portions in the axial direction by the movement of said shift shaft in the axial direction is detected by said plurality of position sensors to detect the shift position; and
at least two of said plurality of shift detection portions are disposed at predetermined positions on substantially a same plane perpendicular to the axis of said shift shaft. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification