Patent Number: 6,254,360

Title: Waterproof structure of washer pump

Abstract: The washer pump includes a housing and a motor. The motor is accommodated in a motor chamber in the housing. The case of the motor includes a pair of opposed arcuate portions and a pair of opposed flat portions. The flat portions are inward of an imaginary circle circumscribing the motor. An internal passage is formed in the case to connect the interior of the case to the motor chamber. A drain structure is formed in the housing to connect the motor chamber to the exterior of the housing. The drain structure is in radial alignment with one of the flat portions. Also, the drain structure includes first, second, and third passages, which extend in different directions. The internal passage and the drain structure prevent the entrance of water into the washer pump and quickly drain water from the interior of the washer pump.

Inventors: Sato; Toshihiro (Toyohashi, JP)

Assignee: Asmo Co., Ltd.

International Classification: B60S 1/48 (20060101); B60S 1/46 (20060101); B60S 1/50 (20060101); F04D 13/06 (20060101); F04D 29/60 (20060101); F04B 017/00 ()

Expiration Date: 07/03/2018