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US 8,870,702 B2Granted
Power switching device for vehicles
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsHideaki Kii, Seiji Itoo, Ayumi Hamada
Life of this patent
Estimating the term…
Abstract
A power switching device for vehicle has an engaging mechanism for connecting and disconnecting between a pair of rotating members arranged on a driving force transmission passage, an operating mechanism for switch-operating the engaging mechanism, an electric actuator, and a waiting mechanism having an elastic member. The elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched to the engaged condition.
Claims10
A power switching device for vehicle, the power switching device comprising:
- an engaging mechanism for connecting and disconnecting a pair of rotating members arranged on a driving force transmission passage from a driving source to wheels;
- an operating mechanism for switch-operating the engaging mechanism between an engaged condition and a disengaged condition;
- an electric actuator for providing operating power to the operating mechanism;
- and
- a waiting mechanism having an elastic member for temporarily accumulating the operating power and then transmitting the operating power to the engaging mechanism;
- wherein the engaging mechanism has a pair of engage portions, each of the pair of rotating members having a respective one of the engage portions, the engaging mechanism being switchable between the engaged condition and the disengaged condition by moving one of the engage portions relative to the other engage portion in an axial direction of the rotating member;
- wherein the elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched from the disengaged condition to the engaged condition;
- and
- wherein the pair of rotating members are a differential case of a differential device and one of right and left axles.
6 more elements
A power switching device for vehicle, the power switching device comprising:
- an engaging mechanism for connecting and disconnecting a pair of rotating members arranged on a driving force transmission passage from a driving source to wheels;
- an operating mechanism for switch-operating the engaging mechanism between an engaged condition and a disengaged condition;
- an electric actuator for providing operating power to the operating mechanism;
- and
- a waiting mechanism having an elastic member for temporarily accumulating the operating power and then transmitting the operating power to the engaging mechanism;
- wherein the engaging mechanism has a pair of engage portions, each of the pair of rotating members having a respective one of the engage portions, the engaging mechanism being switchable between the engaged condition and the disengaged condition by moving one of the engage portions relative to the other engage portion in an axial direction of the rotating member;
- wherein the elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched from the disengaged condition to the engaged condition;
- wherein the engaging mechanism is a two-wheel-drive/four-wheel-drive switching mechanism arranged between a propeller shaft for front wheels or rear wheels and a final reduction gear for front wheels or rear wheels;
- and
- wherein the engaging mechanism being configured to bring the vehicle into a four-wheel-drive condition when the engaging mechanism is in the engaged condition and to bring the vehicle into a two-wheel-drive condition when the engaging mechanism is in the disengaged condition.
7 more elements
A power switching device for vehicle, the power switching device comprising:
- an engaging mechanism for connecting and disconnecting a pair of rotating members arranged on a driving force transmission passage from a driving source to wheels;
- an operating mechanism for switch-operating the engaging mechanism between an engaged condition and a disengaged condition;
- an electric actuator for providing operating power to the operating mechanism;
- and
- a waiting mechanism having an elastic member for temporarily accumulating the operating power and then transmitting the operating power to the engaging mechanism;
- wherein the engaging mechanism has a pair of engage portions, each of the pair of rotating members having a respective one of the engage portions, the engaging mechanism being switchable between the engaged condition and the disengaged condition by moving one of the engage portions relative to the other engage portion in an axial direction of the rotating member;
- wherein the elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched from the disengaged condition to the engaged condition;
- wherein two mechanisms of a differential lock mechanism and a two-wheel-drive/four-wheel-drive switching mechanism are provided as the engaging mechanism;
- and
- wherein the operating mechanism is configured to branch the operating power transmitted from the electric actuator into the differential lock mechanism and the two-wheel-drive/four-wheel-drive switching mechanism.
7 more elements
A power switching device for vehicle, the power switching device comprising:
- an engaging mechanism for connecting and disconnecting a pair of rotating members arranged on a driving force transmission passage from a driving source to wheels;
- an operating mechanism for switch-operating the engaging mechanism between an engaged condition and a disengaged condition;
- an electric actuator for providing operating power to the operating mechanism;
- and
- a waiting mechanism having an elastic member for temporarily accumulating the operating power and then transmitting the operating power to the engaging mechanism;
- wherein the engaging mechanism has a pair of engage portions, each of the pair of rotating members having a respective one of the engage portions, the engaging mechanism being switchable between the engaged condition and the disengaged condition by moving one of the engage portions relative to the other engage portion in an axial direction of the rotating member;
- wherein the elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched from the disengaged condition to the engaged condition;
- and
- wherein the elastic member of the waiting mechanism is a coil spring, the coil spring being arranged between a drive cylindrical shaft coupled to an output shaft of the electric actuator and a driven cylindrical shaft coupled to a rotational shaft of the operating mechanism so as to be substantially coaxial with the drive cylindrical shaft and the driven cylindrical shaft.
6 more elements
A power switching device for vehicle, the power switching device comprising:
- an engaging mechanism for connecting and disconnecting a pair of rotating members arranged on a driving force transmission passage from a driving source to wheels;
- an operating mechanism for switch-operating the engaging mechanism between an engaged condition and a disengaged condition;
- an electric actuator for providing operating power to the operating mechanism;
- and
- a waiting mechanism having an elastic member for temporarily accumulating the operating power and then transmitting the operating power to the engaging mechanism;
- wherein the engaging mechanism has a pair of engage portions, each of the pair of rotating members having a respective one of the engage portions, the engaging mechanism being switchable between the engaged condition and the disengaged condition by moving one of the engage portions relative to the other engage portion in an axial direction of the rotating member;
- wherein the elastic member is incorporated into the waiting mechanism so that the elastic member can temporarily accumulate the operating power only when the engaging mechanism is switched from the disengaged condition to the engaged condition;
- and
- wherein a potentiometer for detecting an amount of rotation is provided on a rotating member arranged in the electric actuator.
6 more elements
Dependencies are inferred from the claim text.