Panasonic Intellectual Property Management Co., Ltd.

Mitsuoki Hishida

Yuichi Yoshikawa

Hirokazu Yamauchi

Keiichiro Nukada

Yasushi Kato

Hirokatsu Kunitomo

Hiroshi Yoneda

Kiyomi Kawamura

Toshiyuki Tamamura

Hajime Ukaji

Makoto Iyoda

Yuya Maeda

Keiji Narumi

Collimator lens () and focusing lens () are provided with AR coating (). AR coating () has a first reflectance for reflecting a first laser light higher than a second reflectance for reflecting a second laser light. Detector () detects diffusion light (DL) diffused by collimator lens () and focusing lens (). Detector () has a first light receiving sensitivity for receiving the first laser light lower than a second light receiving sensitivity for receiving the second laser light.

Laser processing head and laser processing device

Inclined surfaces are formed in areas adjacent to a tooth protruding from the inner circumferential surface of the yoke, on both sides in a motor rotation circumferential direction, and the inclined surfaces are inclined or curved toward a protruding direction of the tooth as a distance from the tooth increases in the motor rotation circumferential direction. The conductive wire includes parts extending in the motor rotation circumferential direction on both sides of the tooth in the motor rotational shaft direction in each of first to n-th turns, and bent portions bending in a thickness direction of the conductive wire are formed in the parts so as to align in a winding axis direction through the width of the conductive wire. Portions of the conductive wire on are inclined toward the protruding direction of the associated tooth as the distance from the bent portion increases in the motor rotation circumferential direction.

Coil mounting structure

A coil device includes a first coil including a plate-shaped first coil body having a first and second end. The first coil body is spirally wound on a columnar portion along the extending direction of the columnar portion such that the second end is positioned on one side in the extending direction relative to the first end. The coil device further includes a second coil including a plate-shaped second coil body having a third end and a fourth end. The second coil body is spirally wound on the columnar portion along the extending direction such that the third end is positioned on the one side in the extending direction relative to the second end of the first coil, and the fourth end is positioned on the one side in the extending direction relative to the third end. The second coil is in electrically parallel connection with the first coil.

Coil device having a core with plate shaped coil bodies

A coil includes: a series of turns constituted by a first turn to an n-th turn of a conductive wire having a polygonal cross-section, where n is an integer equal to or larger than 3, and the conductive wire is wound in a spiral shape and is stacked in a direction from downward toward upward; and an insulating member disposed on either an upper surface or a lower surface of an i-th turn, where i is an integer satisfying 1&#x2264;i&#x2264;n.

Coil and motor using same

A coil is a coil of a conductive wire that has a quadrangular cross section, that is spirally wound and laminated to have a series of turns including first to n-th turns (n is an integer of 3 or more), and that is provided, on at least some of the first to n-th turns in the coil, with deformed portions representing recesses each having a shape different from a shape of another portion of the conductive wire. In each of the first and n-th turns respectively lying at both ends of the series of turns, an outer surface lying on a side opposite to a center of the series of turns extends flush along with a plane intersecting the series of turns.

An insulator includes a part to be wound with a coil, a first flange, and a second flange. The first flange is formed at the side of the part closer to a core segment, and includes a coil guide groove that guides the coil to the part. The second flange is formed at the side closer to a distal end of a tooth. The coil guide groove includes a first groove extending at an acute angle &#x3b8; from an inner surface of the first flange.

Insulator, and stator and motor comprising same

An insulator includes a part to be wound with a coil; a first flange; and a second flange. The first flange is formed at the side of the part closer to a core segment, and includes a coil guide groove that guides the coil to the part. The second flange is formed at the side of the part closer to a distal end of a teeth. The coil guide groove includes a first guide groove and a second guide groove symmetrical with respect to a radial plane. Each of the first and second guide grooves and&#x2014;extends at an acute angle from an inner surface of the first flange.

An insulator includes a part to be wound with a coil of a wiring wire with a circular cross section; first and second flanges. The first flange is formed at the side of the part closer to a core segment. The second flange is formed at the side closer to a distal end of a tooth. The part to be wound with the coil has a slope continuous with the first flange and inclined so that a height from an upper surface of the tooth increases from the first flange toward the second flange. Expression 0&#x3c;(&#x2212;6.8 D+b)&#x2264;&#x3b1;&#x3c;30 is satisfied, where b is a constant and 8.3&#x2264;b&#x2264;11.6 is satisfied, D (mm) is a diameter of the coil, and &#x3b1; (&#xb0;) is an angle of the slope inclined from the upper surface of the tooth as a reference surface.

The invention provides a coil molding attached to a stator of a motor, the coil molding including a coil wound around each of teeth of the stator, and a bus bar connected to the coil and molded integrally with the coil. The invention also provides another coil molding attached to a stator of a motor, the coil molding including a set of coils wound respectively around a plurality of teeth of the stator, the set of coils being molded integrally with each other.

Molded coil body with coil and semiannular busbars integrally connected with coils in the molded coil body

A motor includes a stator including a stator core and teeth respectively protruding from the stator core in predetermined directions of protrusion, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns including first to n-th turns. A k-th (k is an integer, 1&#x3c;k&#x3c;n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in a corresponding one of the directions of protrusion of the teeth from the stator core. Each of the first turn and the n-th turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth is greater in cross-sectional area than the k-th turn.

Motor

A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 1 or greater) turns including first to n-th turns. The coils are each made from a conductive member having a polygonal cross section. On a cross section obtained when one of the coils is cut in a corresponding one of directions of protrusion of the teeth from the stator core, the one of the coils includes a recess on at least either a first opposing surface representing an opposing surface to a corresponding one of the teeth or a second opposing surface representing an opposing surface to another one of the coils, which is wound onto adjacent one of the teeth. A space allowing refrigerant used for cooling the coils to pass through is provided between the recess and at least either the first opposing surface or the second opposing surface.

Motor having increased passage for refrigerant for cooling coils

A motor includes a stator core, teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 2 or greater) turns including first to n-th turns. Within each of ranges respectively wound with the coils onto the teeth in directions of protrusion of the teeth from the stator core, the first turn of each of the coil lies adjacent to a center of the motor. A k-th (k is an integer, 1&#x3c;k&#x2264;n) turn of each of the coils lies opposite to the center of the motor. The first turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth from the stator core is greater in cross-sectional area than each of the k-th turn and the n-th turn.

A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns. In a cross section in a first direction representing each of directions of protrusion of the teeth from the stator core, a k-th (k is an integer, 1&#x3c;k&#x3c;n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in the first direction. The k-th turn of each of the coils is greater in cross-sectional area than each of a first turn and an n-th turn.

A coil includes a series of turns constituted by a first turn to an n-th turn of a conductive wire having a quadrangular cross-section, where the conductive wire is wound in a spiral shape and is stacked in a vertical direction, and n is an integer equal to or greater than 3. In addition, at least a part of the conductive wire of the first turn to the n-th turn is provided with a deformed part whose shape is different from shapes of the other parts. Further, the first turn and the n-th turn are on the both end parts of the series of turns. In addition, at each of the first turn and the n-th turn, the deformed part makes an outer surface positioned on an opposite side with respect to a center of the series of turns extend in a flush manner along a plane intersecting the series of turns.

The invention provides a connection structure between a coil and a bus bar attached to a stator of a motor, and the coil and the bus bar each include a lead part. At least one of the lead parts has a distal end provided with a corner cut away to be stepped to configure a stepped portion having a side surface extending substantially in parallel with a longitudinal direction of the lead part. The coil and the bus bar are connected to each other in a state where the side surface of the stepped portion of a first one of the lead parts is in contact with a second one of the lead parts.

Growing community of inventors

Osaka, Japan

Mitsuoki Hishida