Electric pump
US10323631B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric pump includes a rotor (6) formed in a cup shape integrally assembled to a rotor shaft (10) extended from a motor (3) side to a crank mechanism side inside a case body (2) in a state where an opening is directed to a shaft end on the motor side and rotatably supported by an intermediate bearing (13) arranged inside the opening, an eccentric cam (6d) integrally provided with a top surface portion of the rotor (6) in the axial direction, which is eccentric to a shaft center of the rotor shaft (10), and a crank shaft (12) one end side of which is assembled to an outer periphery of the eccentric cam (6d) through a cam bearing (11) and the other end side of which is connected to the pump side, in which a distance between the intermediate bearing (13) and the eccentric cam (6d) to which the crank shaft (12) is connected is reduced as short as possible, thereby suppressing occurrence of vibration and noise as well as reducing the device size in the axial direction by shortening a shaft length of the rotor shaft (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.