Aisan Kogyo Kabushiki Kaisha

Akira Hamajima

Yoshihiko Honda

Takashi Suefuji

Yoichi Kawakita

Yoshiki Kamio

Ryohei Otaka

A stator of a brushless motor may include a core; a bobbin including a pair of side surfaces, an inner wall, and an outer wall; a conductor wire wound by being overlapped in plural layers; and a resin layer covering the bobbin and the conductor wire. A profile of the conductor wire may become larger towards an outer circumferential side of the stator. Among portions of the conductor wire arranged along a rotary axis direction of a rotor on at least one side surface included in the pair of side surfaces and located on an innermost circumferential side of the stator in the respective plural layers, a portion of the conductor wire exposed to the resin layer and separated from the inner wall and the outer wall may be tilted from an inner circumferential side of the stator toward the outer circumferential side of the stator.

Brushless motor with a stator comprising a bobbin and a conductor wire wound on the bobbin by being overlapped in plural layers

A fuel pump may be driven by a brushless motor. The fuel pump may include a core; three supplying terminals configured to supply electric power to a coil wire fixed to the core and wound around the core; a resin layer holding the three supplying terminals; and a ground terminal held by the resin layer in a state of being insulated from the three supplying terminals, wherein the ground terminal may be electrically connected to a control circuit configured to control electric power supplied to the three supplying terminals.

Fuel pump

Each of the coils provided in a stator includes a wire introducing portion where a wire is introduced into a groove, an adjusting portion including the wire wound within the groove, and a plurality of wire layers each of which are aligned adjacent one another along an extending direction of a tooth. Among the plurality of wire layers, wires located on a periphery side-end in the odd-numbered wire layers are separated from an inner circumferential surface of the periphery by a half pitch.

Stator and brushless motor

A stator may include a stator yoke including one or more yoke portions extending along a circumferential direction of the stator yoke; and a cover configured of resin. The stator yoke may include: a contact part at which an end surface of one yoke portion among the one or more yoke portions in the circumferential direction contacts the other end surface of the one yoke portion in the circumferential direction; a first groove extending along an axial direction of the stator yoke in a vicinity of the contact part; and a second groove extending along the axial direction and disposed at a position spaced father away from the contact part than the first groove. The cover may include a filling that fills the first groove, and the second groove may be hollow.

Stator and electric pump

A stator may comprise: a core having a tubular shape and comprising a tooth extending toward a central axis of the tubular shape; a conducting wire engaging part projecting from an axial end of the core in an axially outward direction from the core; and a coil disposed on the tooth by winding a conducting wire on the tooth. An end of the conducting wire may be bent at a bending portion. The conducting wire may engage with the conducting wire engaging part at the bending portion. A diameter of the conducting wire at the bending portion may be smaller than a diameter of the conducting wire at another portion of the conducting wire.

The first extending portionoverlaps the second extending portionin a radial direction at one part in the circumferential direction and overlaps the third extending portionin the radial direction at another part in the circumferential direction. The second extending portionoverlaps the first extending portionin the radial direction at one part in the circumferential direction and overlaps the third extending portionin the radial direction at another part in the circumferential direction. The third extending portionoverlaps the first extending portionin the radial direction at one part in the circumferential direction and overlaps the second extending portionin the radial direction at another part in the circumferential direction.

Growing community of inventors

Obu, Japan

Akira Hamajima