The welding chip heats and melts the first welded part and the second welded part, and includes a projected part, a first extension part, and a second extension part. The projected part has a tubular shape with a bottom. One end of the tubular shape extending in a predetermined direction opens and the other end of the tubular shape is closed. The projected part is pushed into the first welded part and the second welded part in the predetermined direction from the opening one end of the tubular shape. The first extension part has a shape extending from a tube outer surface of the projected part and extending annularly around the predetermined direction. The second extension part has a shape extending from the first extension part to the opening one end of the projected part in the predetermined direction and extending annularly around the predetermined direction.

A process and process apparatus for forming a protective coating on a magnetic pole of a permanent magnet motor. The process for forming a protective coating on a magnetic pole of a permanent magnet motor includes: horizontally placing a motor rotor, and controlling to perform, at positions of an inlet and an outlet operating on a vacuum bag in a current state, vacuumization and adhesive injection only on an arc section located at the bottom of the motor rotor; and driving the motor rotor to rotate by a predetermined angle after the adhesive in the arc section is initially cured so as to rotate the next arc section in which no adhesive is injected to the bottom, until all arc sections in the circumferential direction of the motor rotor are injected with the adhesive.

A stator unit includes an A-phase yoke, a B-phase yoke, a first resin portion, and a second resin portion. The A-phase yoke and the B-phase yoke include pole teeth. The first resin portion includes an A-phase yoke filling part in an inner space of the A-phase yoke and a B-phase yoke filling part in an inner space of the B-phase yoke. The second resin portion includes a sealing part between the pole teeth. An A-phase bobbin separates the A-phase yoke filling part from the sealing part. A B-phase bobbin separates the B-phase yoke filling part from the sealing part.

A motor of the present invention includes a stator having windings. The stator includes: a cylindrical outer member; a mold resin portion that molds the windings with a resin; and a stress non-transmitting portion provided between the mold resin portion and the outer member so as not to transmit stress to the outer member due to shrinking of the mold resin portion or reduce the amount of transmitted stress.

A device for injection-molding and for overmolding objects has an upper element and a lower element, which surround a contiguous volume consisting of a filling space for holding the object and casting material and a sprue for holding casting material. The upper element is movable in relation to the lower element. A piston is arranged within the upper element in an integrated manner and is movable relative to the upper element. The position of the piston can be varied in accordance with a dimension of the object in an axial direction and the piston has a protrusion for changing a volume as filling amount balancing of the casting material within the sprue such that the device is filled with a constant amount of casting material irrespective of the dimension of the object in the axial direction and a volume varying with the dimension of the object in the axial direction.

A manufacturing method of a laminated core includes holding a laminated core body mounted on a cull plate, injecting a resin to a magnet-insert hole from a resin reservoir part provided in a lower die through the cull plate, then ejecting the laminated core body and the cull plate and separating the cull plate from the laminated core body. The cull plate includes a through hole which forms at least a part of a flow path extended from the resin reservoir part to an upper surface of the cull plate. The through hole of the cull plate includes a tapered portion and a straight pipe portion being adjacent to the tapered portion. The tapered portion has an inner diameter gradually decreasing toward the upper surface of the cull plate, and the straight pipe portion has a constant inner diameter in a height direction.

A housing (10) which has a first part (14) with a first wall (22) having an outer wall surface (28) and a second part (18) with a second wall (24) having an inner wall surface (30). The wall surfaces can have for example a cylindrical casing shape at least in some sections. Portions of the first wall (22) and the second wall (24) overlap in an overlap region (26). The first wall (22) and the second wall (24) are connected along the circumference of the wall surfaces (28, 30) by means of a rotational friction welding seam (32) arranged in the overlap region (26). The rotational friction welding seam (32) has a compact zone (48) with a first elastic modulus and a mixing zone (44) with a different second elastic modulus.

Various methods and assemblies are provided for producing composite components having formed in features. For example, a method may comprise depositing a composite material on a base tool; bringing a feature forming tool into contact with the composite material; and processing the composite material with the feature forming tool in contact with the composite material. The processed composite material forms a green state composite component. The feature forming tool comprises a sheet having one or more elements for interacting with one or more elements of the base tool to form one or more features of the composite component. In some embodiments, the method also may comprise sealing a bag around the feature forming tool and the composite material after bringing the tool into contact with the composite material and removing the bag and the feature forming tool from the green state composite component after processing.

The present disclosure relates to a method for fabrication of a conductor bar and to a use of a conductor tape with applied putty for the fabrication of a conductor bar. Described is a method for fabrication of a conductor bar including, applying a putty at one side of a conductor tape, applying a release foil at the other side of the putty opposed to the conductor tape, removing the release foil before applying the conductor tape to the narrow side of the conductor bar, providing a pressing mold with rounded edges at the inner side of the pressing mold, surrounding the conductor bar with putty and conductor tape with the pressing mold, and hot pressing the conductor bar with the pressing mold.

The present invention relates to an insulating sheet of a nonwoven sheet, for example a sheet comprising aramid fiber, comprising 15 to 80 percent by weight of a crystalline silicate mineral powder, for example a mica powder, the nonwoven sheet impregnated with a coating of an impregnating resin based on acrylate derivatives, which is suitable for increasing the compactness of the insulating sheet and for preventing the silicate mineral powder from detaching from the nonwoven sheet during use. The impregnating resin also comprises an organic solvent, which is capable of reducing the viscosity thereof and of promoting its deep penetration into the sheet. In addition, the impregnating resin comprises a UV polymerization photoinitiator which is suitable for curing the resin, only after said resin has been applied to the sheet and has penetrated deeply therein. The invention also describes the method for impregnating the insulating sheets.