Hirotada TANAKA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: In a process of manufacturing a motor, a terminal pin is first attached to an insulator of a stator. Next, an end portion of a conducting wire defining a coil is drawn out toward the terminal pin, and the conducting wire is wound around the terminal pin. Next, the conducting wire is soldered to the terminal pin. Thereafter, injection molding of a casing is performed with the stator as an insert. At this time, a mold is brought into contact with an upper surface of the insulator to surround the terminal pin with the mold. Thus, a contact of the mold with the conducting wire wound around the terminal pin is prevented. This reduces the likelihood that the conducting wire will be damaged.
Abstract: An inner rotor motor may include a shaft, a rotor, a stator, an upper bearing, a lower bearing, a motor casing that includes an opening at an upper portion, a casing cover that holds the upper bearing and covers the opening of the motor casing, and a lower damping member. The motor casing may include a cylindrical portion, a bottom wall portion that extends inward from the cylindrical portion, and a lower boss portion that is formed in the shape of a bottomed cylinder protruding downward from a bottom of the bottom wall portion. The lower bearing is disposed inside the lower boss portion, and the lower damping member is disposed outside the lower boss portion ion. The lower boss portion is provided with a lower boss recess, and the lower damping member is provided with a concave or convex rotation prevention portion.
Abstract: An inner rotor motor may include a shaft, a rotor, a stator, an upper bearing, a lower bearing, a motor casing that includes an opening at an upper portion, a casing cover that holds the upper bearing and covers the opening of the motor casing, and a lower damping member. The motor casing may include a cylindrical portion, a bottom wall portion that extends inward from the cylindrical portion, and a lower boss portion that is formed in the shape of a bottomed cylinder protruding downward from a bottom of the bottom wall portion. The lower bearing is disposed inside the lower boss portion, and the lower damping member is disposed outside the lower boss portion ion. The lower boss portion is provided with a lower boss recess, and the lower damping member is provided with a concave or convex rotation prevention portion.