Structure for preventing dropping of propeller shaft
AssigneeUd Trucks Corporation
InventorYohei Ono
Life of this patent
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Abstract
A fall-off preventing structure of a propeller shaft does not allow a companion flange to be completely pulled off and dropped from a spline shaft when a nut loosens and comes off. In the propeller shaft, a round shaft part is provided on a front end of the spline shaft, a length of a threaded part of the spline shaft front end side on which the nut is screwed and the round shaft part is set longer than a length from a front end portion of the companion flange to a seat surface of the nut, and a total length of the length of the threaded part and the round shaft part and a length from the front end portion of the companion flange to the seat surface of the nut is set longer than the tolerable slide amount.
Claims2
A fall-off preventing structure of a propeller shaft being divided into a first propeller shaft and a second propeller shaft, comprising:
- a companion flange spline fitting on a spline shaft of the first propeller shaft;
- a nut being screwed on a front end side of the spline shaft, thereby fastening and fixing the companion flange in an axial direction of the spline shaft;
- a spline shaft of the second propeller shaft spline fitting in a spline yoke of the second propeller shaft coupled to the companion flange via a universal joint;
- and
- a spline engagement length of the companion flange and the spline shaft of the first propeller shaft being shorter than a tolerable slide amount of the spline yoke and the spline shaft of the second propeller shaft, wherein
- a round shaft part is provided on a front end of the spline shaft on which the nut is screwed;
- a length of a threaded part of the spline shaft front end side on which the nut is screwed and the round shaft part is set longer than a length from a front end portion of the companion flange to a seat surface of the nut;
- and
- a total length of the length of the threaded part and the round shaft part and a length from the front end portion of the companion flange to the seat surface of the nut is set longer than the tolerable slide amount.
A fall-off preventing structure of a propeller shaft being divided into a first propeller shaft and a second propeller shaft, comprising
- a companion flange spline fitting on a spline shaft of the first propeller shaft;
- a nut being screwed on a front end side of the spline shaft, thereby fastening and fixing the companion flange in an axial direction of the spline shaft;
- and
- a spline shaft of the second propeller shaft spline fitting in a spline yoke of the second propeller shaft coupled to the companion flange via a universal joint, wherein
- a round shaft part is provided on a front end of the spline shaft on which the nut is screwed;
- and
- a spline engagement length of the companion flange and the spline shaft of the first propeller shaft is set longer than a tolerable slide amount of the spline yoke and the spline shaft of the second propeller shaft.
Dependencies are inferred from the claim text.