Electric motor with connector element on foil-shaped insulating substrate

Abstract

An electric motor (19) comprising a first part (21) and a second part (23) rotatable relative to each other about an axis of rotation (9). Wherein the first part comprises a foil-shaped insulating base (51) on which a plurality of helical conductor tracks (67, 67', 69, 69', 71, 71') connected in series, and the insulating The base plate is bent into a cylinder (29) extending between first and second imaginary end faces (59, 61) when viewed parallel to the axis of rotation and mounted on the first on a carrier (27) near the end face, and wherein the second part includes a permanent magnet unit (73) for generating a magnetic field at the position of the conductive track, and the first part has connector means (79) for making the conductive track The trace is connected to a power supply. According to the invention, said connector arrangement (79) comprises a first connector element (91) provided on the base plate between the first and second end faces (59, 61) in the vicinity of the first end face (59) , and a second connector element (93), which is provided on the carrier (27) and electrically connected to the first connector element. In a preferred embodiment, the first connector element comprises several additional conductor tracks (95, 97, 99, 101, 103, 105) provided on the base plate and extending substantially parallel to the first end face. In this way, a connector arrangement is provided which is structurally simple and robust and which is effectively protected against damage caused by imprecise handling forces and movements during the manufacturing process of the electric motor. The electric motor (19) according to the invention is used in the data storage device (1) according to the invention.

Description

technical field [0001] The invention relates to an electric motor comprising a first part and a second part rotatable relative to each other about an axis of rotation, wherein the first part comprises a foil-shaped insulating base on which a plurality of helical conductor tracks connected in series are provided, and said insulating base plate is bent into a cylinder extending between first and second imaginary end faces when viewed in a direction parallel to the axis of rotation, and mounted on the carrier near the first end face , and wherein the second part includes permanent magnet units for generating a magnetic field at the location of the conductive track, said first part has connector means for connecting said conductive track to a power source. [0002] The invention also relates to a data storage unit comprising a support for at least one information carrier, a motor for rotating said support about a rotational axis, and a scanning unit for scanning said information c...

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of the known data storage unit and the known electric motor used therein is that during the manufacturing process of the first part of the electric motor, as well as during the manufacturing process of the electric motor, the strip-shaped foil elements of the connector arrangement of the electric motor are inaccurately positioned. Bends easily under the influence of handling forces and movements, making the entire base plate potentially unusable in the next manufacturing step

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