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US 12,631,223 B2Granted
Reverse-input blocking clutch
AssigneeNsk Ltd.
InventorNagao Dohi
Life of this patent
Estimating the term…
Abstract
A reverse-input blocking clutch includes a housing, an input shaft, an output shaft, a pair of engaging elements, a first bearing mechanism provided between the input shaft and the housing, and a second bearing mechanism provided between the output shaft and the housing. At least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of the first bearing mechanism and the second bearing mechanism.
Claims15
A reverse-input blocking clutch comprising:
- a housing which has a pressed surface;
- an input shaft which is provided inside the pressed surface in a radial direction;
- an output shaft which is provided inside the pressed surface in the radial direction;
- and
- a pair of engaging elements which are movable relative to each other in the radial direction and each of which has a first engaging portion facing the input shaft, a second engaging portion facing the output shaft, and a sliding contact portion facing the pressed surface,
- wherein when rotational force is input to the input shaft, the pair of engaging elements move toward each other radially inward based on the engagement between the input shaft and the first engaging portion and transmit the rotational force to the output shaft based on the engagement between the second engaging portion and the output shaft,
- wherein when rotational force is reversely input to the output shaft, the pair of engaging elements move away from each other radially outward based on the engagement between the output shaft and the second engaging portion and the pressed surface and the sliding contact portion are frictionally engaged,
- wherein at least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of a first bearing mechanism between the input shaft and the housing and a second bearing mechanism between the output shaft and the housing,
- wherein the housing includes a first housing which rotatably holds the input shaft and a second housing which rotatably holds the output shaft,
- wherein the first housing and the second housing are spigot-joined to each other,
- wherein an inner peripheral surface of the first housing is a spigot fitting surface,
- wherein an outer peripheral surface of the second housing is a spigot fitting surface spigot-joined to the inner peripheral surface of the first housing,
- wherein an inner peripheral surface of the second housing is provided with the pressed surface, and
- wherein the spigot fitting surface of the first housing overlaps at least part of the engaging element in an axial direction.
11 more elements
A reverse-input blocking clutch comprising:
- a housing which has a pressed surface;
- an input shaft which is provided inside the pressed surface in a radial direction;
- an output shaft which is provided inside the pressed surface in the radial direction;
- and
- a pair of engaging elements which are movable relative to each other in the radial direction and each of which has a first engaging portion facing the input shaft, a second engaging portion facing the output shaft, and a sliding contact portion facing the pressed surface,
- wherein when rotational force is input to the input shaft, the pair of engaging elements move toward each other radially inward based on the engagement between the input shaft and the first engaging portion and transmit the rotational force to the output shaft based on the engagement between the second engaging portion and the output shaft,
- wherein when rotational force is reversely input to the output shaft, the pair of engaging elements move away from each other radially outward based on the engagement between the output shaft and the second engaging portion and the pressed surface and the sliding contact portion are frictionally engaged,
- wherein at least one of the input shaft, the output shaft, and the housing has a raceway surface which contacts at least one rolling element of a first bearing mechanism between the input shaft and the housing and a second bearing mechanism between the output shaft and the housing, and
- wherein the housing has an outer raceway surface which contacts at least one rolling element of the first bearing mechanism and the second bearing mechanism.
6 more elements
Dependencies are inferred from the claim text.