Mitsuba Corporation

Atsushi Otani

Satoshi Ishikura

Takao Umezawa

Hiroshi Yokoyama

A washer pump configured to suck liquid stored in a tank and configured to jet the liquid to a surface to be cleaned. The washer pump includes: a housing attached to the tank, an impeller rotatably provided in the housing, a motor rotating the impeller, a motor accommodating portion provided in the housing and accommodating the motor, a corner portion provided in the housing and disposed between the motor accommodating portion and the tank, and a respiratory hole provided between the motor accommodating portion and the corner portion. The respiratory hole communicating an inside of the motor accommodating portion with an outside thereof.

Washer pump with a respiratory hole communicating a motor accommodating portion and an outside

A pump chamber (), valve chambers (and), discharge holes (and), and flow paths (and) are integrally provided to each other in a housing (), so that the pressure loss of the cleaning liquid 'W' can be reduced. In addition, since valve chambers of the flow paths extend to the discharge holes, the cleaning liquid flowing out of the flow paths can be discharged at a portion closer to the central of the valve chambers. As a result, the outlet portions of the flow paths and the inlet portions of the discharge holes is brought closer to each other, and the turbulent of the cleaning liquid in the valve chambers can be suppressed, thereby reducing the pressure loss.

Washer pump having a pair of flow paths with the pump side of one of the flow paths being smaller than the valve chamber side of the one flow path

An object of the present invention is to suppress variations in shape of flow channels to have an enlarged flow channel. When an attachment main bodyof a lid memberis attached to a recessed attachment partof a main body member, a pair of flange partsprovided to the lid memberabuts on the main body member. Therefore, the insertion amount of the attachment main bodyinto the recessed attachment partin each product can be maintained approximately constant while enlarging a main channel MC and a pair of sub channels SSand SS, which are formed by the main body memberand the lid member, and variations in shape of these flow channels can be reliably suppress. The contact surfaces between the lid memberand the main body membercan be bent by providing the flange parts, and when forming a covering member, the molten resin can be prevented from leaking from the outside of the lid membertoward the main flow channel MS and the pair of sub flow channels SSand SS, and as a result, variations in shape of the flow channels can be reliably suppressed.

Nozzle, manufacturing method of the same, and washer nozzle

An object of the present invention is to provide a valve apparatus capable of keeping a holding state of a valve body. The valve apparatusis adapted to supply cleaning fluid by switching between a first flow channeland a second flow channel, the valve apparatusbeing provided with: a first fluid pipehaving a first flow channel; a second fluid pipecoaxially aligned with the first fluid pipe, the second fluid pipehaving a second flow channel; a housingprovided with a first valve chamberand a second valve chamber; a partition walldisposed between the first flow channeland the second flow channelin the housing; and a ribprovided to the housingto support the partition wall, wherein the partition wallhas: a film-like valve bodywhich is elastically deformed by pressure of the first valve chamberand the second valve chamberso as to open one of the first flow channeland the second flow channeland close the other of the first flow channeland the second flow channel; and a frameattached along an outer circumference of the valve bodyand supported by the rib, wherein the frameis higher in stiffness than the valve body

Growing community of inventors

Gunma, Japan

Atsushi Otani