Hitachi, Ltd.

Hitachi Home and Life Solutions, Inc.

Tagasangyo, Ltd.

Yasuyuki Hiruta

Naruhiko Suzuki

Yoshitaro Ishii

Akira Iwao

Yukiji Iwase

Koichi Umezawa

Susumu Sato

Hirofumi Tanaka

Shoji Hayashi

Kyouichi Kanno

Naofumi Kitagawa

Yasunori Kotaka

Masao Sunagawa

Akira Iida

An object of the present invention is to provide an electric vacuum cleaner equipped with a compact and easy-to-operate cyclonic separation type dust collector. To accomplish the object, the present invention mounts a cyclonic separation cylinder () that centrifugally separates and captures dust and a dust collecting case () that contains a first auxiliary filter () detachably on the lower case () of the cleaner body () and part of air from the cyclonic separation cylinder () is fed to the motor-driven blower through the dust collecting case (). The present invention mounts a cyclonic separation cylinder () that centrifugally separates and captures dust and a dust collecting case () that contains a first auxiliary filter () detachably on the lower case () of the cleaner body () and part of air from the cyclonic separation cylinder () is fed to the motor-driven blower through the dust collecting case () and a filter provided under it.

Electric vacuum cleaner

The electric vacuum cleaner is disclosed which includes a main body within which an electric blower and cyclonic separation cylinder are provided. A dust collecting case is provided in communication with the cyclonic separation cylinder to receive dust that has been separated from the inlet tube. The dust collecting case also includes a lifter arranged therein. Air received from the inlet tube is separated such that a portion is passed through the dust collecting case and a communicating passage. The air is subsequently merged and discharge through the electric blower.

An electric vacuum cleaner having a body, suction generating means and a dust collection space in said body, and a rotatable hose inlet for receiving a suction hose and connecting the hose to the dust collection space. The suction hose has at one end a coupling engageable with said hose inlet. An electrical power supply cord socket is arranged to receive a plug of a power supply cord for a powered accessory of the vacuum cleaner. To avoid twisting of the cord around the hose, the cord socket is located on the hose coupling.

Vacuum cleaner

A hose fixture device has a cylindrical wall with projections thereon, which projections engage a corresponding mounting projection of a hose. Normally that mounting projection is a helix, so that there is a screw engagement. The projections are arranged circumferentially around the cylindrical wall with gaps therebetween. There are also gripper members, again spaced circumferentially with gaps therebetween, which grip an end of the hose. The gaps make is easy to see such engagement. The gripper members are aligned with the gaps between those projections. This provides a secure fixing of the hose to the hose fixture device. Furthermore, the device may be moulded easily. Such a hose fixture device may be used to attache a hose joint component (e.g. a suction tool) to a hose of an electric vacuum cleaner.

Hose fixture device

An electrical appliance utilizes felt for causing a corona discharge to allow accumulated static electricity to be discharged, and a conductive member having a grounding effect and constituted by a pressure washer or the like is provided in the vicinity of the felt, at a distance of 4 mm or greater therefrom. The felt is made of acrylonitrile-copper sulfate composite fibers.

Electrical appliance

Growing community of inventors

Hitachi, Japan

Yasuyuki Hiruta