Linear-motion contactless power supply system
First Claim
1. A linear-motion contactless power supply device including a stationary unit and a movable unit movable along the longitudinal direction of said stationary unit for supplying electrical power from said stationary unit to said movable unit without direct contact;
- said stationary unit being a cylindrical primary conductor to which a high-frequency alternating current is supplied;
said movable unit being provided with a secondary conductor which is isolated from said primary conductor and which is arranged coaxially with said primary conductor, said movable unit also having a high-frequency toroidal core which is arranged so as to cover said secondary conductor from the outside, andslidable support means of a ceramic bearing structure interposed between said primary and secondary conductors for sliding said secondary conductor in the longitudinal direction of and with respect to said primary conductor, electrically insulating between said primary and second conductors and also preventing sagging in the gravitational direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A linear-motion contactless power supply device for supplying electrical power from a stationary unit to a movable unit without direct contact; the stationary unit being a cylindrical primary conductor to which a high-frequency alternating current is supplied; the movable unit being provided with a secondary conductor which is isolated from the primary conductor and which is arranged coaxially with the primary conductor so as to be slidable in the longitudinal direction of and with respect to the primary conductor and also provided with a high-frequency toroidal core which is arranged so as to cover the secondary conductor from the outside.
57 Citations
5 Claims
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1. A linear-motion contactless power supply device including a stationary unit and a movable unit movable along the longitudinal direction of said stationary unit for supplying electrical power from said stationary unit to said movable unit without direct contact;
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said stationary unit being a cylindrical primary conductor to which a high-frequency alternating current is supplied; said movable unit being provided with a secondary conductor which is isolated from said primary conductor and which is arranged coaxially with said primary conductor, said movable unit also having a high-frequency toroidal core which is arranged so as to cover said secondary conductor from the outside, and slidable support means of a ceramic bearing structure interposed between said primary and secondary conductors for sliding said secondary conductor in the longitudinal direction of and with respect to said primary conductor, electrically insulating between said primary and second conductors and also preventing sagging in the gravitational direction. - View Dependent Claims (2)
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3. A linear-motion contactless power supply device including a stationary unit and a movable unit movable along the longitudinal direction of said stationary unit for supplying electrical power from said stationary unit to said movable unit without direct contact;
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said stationary unit comprising a rod of a high-frequency magnetic substance and a primary coil made up of a central portion, left and right portions divided from said central portion, said left and right portions being structured so that through each of the left and right portions an electric current that is one half the current through said central portion flows, said rod of the high-frequency magnetic substance mechanically supporting said central portion of the primary coil over the entire length of linear motion; and said movable unit comprising a core of a high-frequency magnetic substance constructed so as to form a magnetic path along with said rod of a high-frequency magnetic substance for main magnetic flux generated by said primary coil, and a secondary coil wound around this core. - View Dependent Claims (4, 5)
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Specification