Matsushita Electric Industrial Co., Ltd.

Toru Odachi

Hiroshi Mori

Naoyuki Ohara

Tomonori Kato

Koichi Ito

Seizo Hayashi

Tamaki Nishikori

Hiroshi Hayakawa

Tetsuo Imai

Seiji Yamaguchi

Hidenori Kitamura

Hiroyuki Kayama

Hidetaka Yabuuchi

Yuichi Shimizu

Saburo Kajikawa

Takaaki Ogawa

Tadashi Matsuyo

Hideo Okubo

Kenichiro Sunaba

Hidetoshi Imai

Tomomi Mitani

Masayo Haji

Masashi Okushima

Toshifumi Miyahara

Hirokazu Nagaoka

Masaichi Fukushima

Yasuo Oshima

Yoshiaki Onishi

Kiminori Kato

Miki Yasuno

Atsushi Nakayama

Yoshiki Kuroki

A vacuum-cleaner suction tool includes a sucking portion for sucking up dust on a surface to be cleaned, a joint portion having one end connected to the upper side of the sucking portion and the other end provided with a connection pipe, and an agitator disposed within the sucking portion for scraping dust off the surface. The opening, the joint portion, and the connection pipe each have a channel portion allowing sucked-up dust to pass therethrough. The joint portion is configured to be turnable, relative to the sucking portion, in a horizontal direction substantially parallel to the surface to be cleaned to such an extent that the longitudinal central axis of the sucking portion becomes substantially parallel to the longitudinal central axis of the connection pipe, whereby the forward end of the sucking portion, from left to right, can be brought into close contact with wall surfaces so that dust liable to collect in corners can be fully sucked up.

Vacuum-cleaner suction tool and vacuum cleaner using the same

An electric vacuum cleaner includes an inlet port through which a suctioned air stream including dirt particles pass and a centrifugal separation member having a substantially circular space therein. The centrifugal separation member has a swirl portion to swirl the dust-laden suction air stream along an inner surface of the centrifugal separation member. By forming swirl passageway between the swirl portion and the inner surface of the centrifugal separation member, the high velocity swirling air stream can be made and consequently an efficiency of separating the dirt particles from the suction air and collecting the dirt particles can be improved.

Vacuum cleaner

A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.

A self-moving cleaner has a main body and comprises an intake opening for suctioning dust, an electric blower for generating airflow to suction dust, a dust receiver for collecting the dust suctioned by the electric blower, rollers driven by drive motors, a power source for supplying electric power to the electric blower and the drive motors, and sensors for optically detecting a distance to an obstacle. An enclosure surrounds the main body, the electric blower, the dust receiver, the power source, and the sensors, wherein the enclosure is transparent or semi-transparent, and the sensors transmit and receive light through the enclosure.

Self-moving cleaner

In the invention, a brush body that is rotated and driven by a motor is disposed in a suction unit and dust is sucked from the suction unit by a blower while exhaust of the blower is sent to the suction unit side through an exhaust passage While the exhaust of the blower is blown to the motor exhaust is blown to the floor for lifting the dust from the floor to enhance the dust collection efficiency, and moreover, if the output of the motor for driving the brush is increased, temperature rise of the motor can be suppressed, and thus durability may be enhanced.

In the invention, a brush body that is rotated and driven by a motor is disposed in a suction unit , and dust is sucked from the suction unit by a blower , while exhaust of the blower is sent to the suction unit side through an exhaust passage . While the exhaust of the blower is blown to the motor exhaust is blown to the floor for lifting the dust from the floor to enhance the dust collection efficiency, and moreover, if the output of the motor for driving the brush is increased, temperature rise of the motor can be suppressed, and thus durability may be enhanced.

Growing community of inventors

Shiga, Japan

Toru Odachi