ELECTRIC PUMP
First Claim
1. An electric pump, comprising:
- a motor housing, and a pump housing adjacent to the motor housing;
a shaft including a base end portion fixed to the motor housing;
a rotor housed in the motor housing, provided outward in a radial direction of the shaft, and to be rotated with respect to the shaft; and
an impeller housed in the pump housing and fixed to the rotor at a side of a tip end portion of the shat, and a cylindrical cap attached to the tip end portion of the shaft, whereinthe pump housing includes a suction port provided in an extending direction of the shaft, and a discharge port provided at one side of the impeller and in a direction crossing an extending direction of the shaft,the shaft includes an exposed portion at a tip end side further than a portion to which the cap is attached in the tip end portion, andthe cap is held by the shaft, is configured to prevent the rotor from moving toward a tip end side of the shaft, and includes, on an outer peripheral portion, a first taper portion being decreased in diameter toward a tip end side of the shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric pump includes a shaft, a rotor provided outward in a radial direction of the shaft, and to be rotated to the shaft, an impeller fixed to the rotor, and a cylindrical cap attached to a tip end portion of the shaft. A pump housing includes a suction port provided in an extending direction of the shaft, and a discharge port provided at one side of the impeller and in a direction crossing an extending direction of the shaft. The shaft includes an exposed portion at a tip end side further than a portion to which the cap is attached in the tip end portion. The cap is held by the shaft, prevents the rotor from moving toward a tip end side of the shaft, and includes, on an outer peripheral portion, a first taper portion being decreased in diameter toward the tip end side of the shaft.
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Citations
14 Claims
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1. An electric pump, comprising:
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a motor housing, and a pump housing adjacent to the motor housing; a shaft including a base end portion fixed to the motor housing; a rotor housed in the motor housing, provided outward in a radial direction of the shaft, and to be rotated with respect to the shaft; and an impeller housed in the pump housing and fixed to the rotor at a side of a tip end portion of the shat, and a cylindrical cap attached to the tip end portion of the shaft, wherein the pump housing includes a suction port provided in an extending direction of the shaft, and a discharge port provided at one side of the impeller and in a direction crossing an extending direction of the shaft, the shaft includes an exposed portion at a tip end side further than a portion to which the cap is attached in the tip end portion, and the cap is held by the shaft, is configured to prevent the rotor from moving toward a tip end side of the shaft, and includes, on an outer peripheral portion, a first taper portion being decreased in diameter toward a tip end side of the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification