| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an impeller that prevents abrasion and damage of the slide surface of the impeller by reducing slide resistance stably, and can reduce power loss and improve fuel consumption by reducing rotational torque.SOLUTION: An impeller having a resin-based bush rotatably held inside a housing for a pump and a plurality of rubber-like elastic material-based blade parts fixed to the outer peripheral surface of the resin-based bush includes a resin-based plate part that is fixed to the tip part of the blade part and slides and contacts with the inner peripheral surface of the housing for a pump. In the impeller, an annular projection provided at both axial end parts of the resin-based bush slides and contacts with both side walls of the housing for a pump.</p> |
