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US 10,605,242 B2Granted
Electric lubricant pump comprising a connectable drive
AssigneeZF Friedrichshafen AG
InventorsMarkus Krapf, Ulrich Bohner
Life of this patent
Estimating the term…
Abstract
A device for the supply of lubricant with a lubricant pump (101), which has a driveshaft (103), and a motor (107). The motor (107) is designed to drive the driveshaft (103). At least one clutch (109, 111, 113) serves to establish and/or interrupt a force flow between a shaft in the force flow of a transmission and the driveshaft (103).
Claims10
A device for supplying lubricant, the device comprising:
- a lubricant pump having a driveshaft that is electrically drivable and mechanically drivable,
- an electric motor being couplable to the driveshaft of the lubricant pump such that the lubricant pump is drivable by the electric motor,
- at least one clutch being engagable to establish a force flow between a force flow of a transmission and the driveshaft of the lubricant pump such that, when the clutch is engaged, the lubricant pump is mechanically driven by the force flow of the transmission,
- the clutch being disengageable to interrupt the force flow between the force flow of the transmission and the driveshaft of the lubricant pump such that, when the clutch is disengaged, the lubricant pump is electrically driven by the electric motor,
- a first actuating element comprising a shifting fork which is pivoted in a first direction by a solenoid magnet when the solenoid magnet is activated, and the shifting fork being pivoted in an opposite second direction by a spring when the solenoid magnet is deactivated,
- the shifting fork communicating with the clutch such that when the shifting fork is pivoted in the first direction, the clutch is disengaged to interrupt the force flow from the transmission to the driveshaft of the lubricant pump, and the lubrication pump is driven by the electric motor, and
- when the shifting fork is moved in the opposite second direction, the clutch is engaged to establish the force flow from the transmission to the driveshaft of the lubricant pump, and the lubrication pump is driven by the transmission.
4 more elements
A device for supplying lubricant to a transmission, the device comprising:
- a lubricant pump having a driveshaft comprising first and second axial ends;
- an electric motor having a driven shaft, and the driven shaft being rotationally fixed to the first axial end of the driveshaft such that the lubricant pump is drivable by the electric motor;
- a clutch being shiftable to first and second positions such that the clutch, when shifted into the first position, establishes a flow of force from the transmission to the driveshaft of the lubricant pump, and the clutch, when shifted into the second position, interrupts the flow of force from the transmission to the driveshaft of the lubricant pump;
- and
- an actuating element comprising a shifting fork, a solenoid magnet and a spring, the shifting fork communicating with the clutch and being movable in opposite directions, and the solenoid magnet communicating with the shifting fork and the spring such that:
- when the solenoid magnet is activated, the shifting fork is moved in a first direction, against a force of the spring, such that the clutch is shifted into the second position to interrupt the flow of force from the transmission to the driveshaft of the lubricant pump, and the lubrication pump is driven by the electric motor, and
- when the solenoid magnet is deactivated, the shifting fork is moved in an opposite second direction, by the force of the spring, such that the clutch is shifted into the first position to establish the flow of force from the transmission to the driveshaft of the lubricant pump, and the lubrication pump is driven by the transmission.
4 more elements
Dependencies are inferred from the claim text.