A non-contact power supply connection unit, comprising: a fixed section for power supply and a movable section for power receiving; the fixed section comprising: an E-type power supply-side core, including a bottom section, two side-leg sections and a middle-leg section; a power supply-side inductor, including a power supply-side coil wound around the middle-leg section of the power supply-side core; the movable section comprising: an E-type power receiving-side core, including a bottom section, two side-leg sections and a middle-leg section; a power receiving-side inductor, including a power receiving-side coil wound around the middle-leg section of the power receiving side core; whereby the bottom section of the power supply-side core has a rectangular plate shape having length dimension in a direction wherein the side-leg sections and the middle-leg section extend, the bottom section of the power receiving-side core has a rectangular plate shape having length dimension in a direction wherein the side-leg sections and the middle-leg section extend, the power receiving-side core and the power supply-side core are configured so that the power receiving-side core is movable in a direction parallel to the side-leg sections and the middle-leg section of the power receiving-side core and the side-legs sections and the middle-leg section of the power supply-side core, and the length dimension of the bottom section of the power receiving-side core is as short as half of the length dimension or less of the bottom section of the power supply-side core; the fixed section further comprising: a power supply-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power supply-side core; and the movable section further comprising a power receiving-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power receiving-side core; and a gap-covering section, being integrally formed with the power supply-side bracket section or the power receiving-side bracket section provided by the non-ferromagnetic metal material, which covers an outer portion of a magnetic gap that is a part of a magnetic loop formed with the power supply-side core and the power receiving-side core disposed to face each other, wherein the gap-covering section extends to the vicinity of power supply-side bracket section. the fixed section comprising: an E-type power supply-side core, including a bottom section, two side-leg sections and a middle-leg section; a power supply-side inductor, including a power supply-side coil wound around the middle-leg section of the power supply-side core; the movable section comprising: an E-type power receiving-side core, including a bottom section, two side-leg sections and a middle-leg section; a power receiving-side inductor, including a power receiving-side coil wound around the middle-leg section of the power receiving side core; whereby the bottom section of the power supply-side core has a rectangular plate shape having length dimension in a direction wherein the side-leg sections and the middle-leg section extend, the bottom section of the power receiving-side core has a rectangular plate shape having length dimension in a direction wherein the side-leg sections and the middle-leg section extend, the power receiving-side core and the power supply-side core are configured so that the power receiving-side core is movable in a direction parallel to the side-leg sections and the middle-leg section of the power receiving-side core and the side-legs sections and the middle-leg section of the power supply-side core, and the length dimension of the bottom section of the power receiving-side core is as short as half of the length dimension or less of the bottom section of the power supply-side core; the fixed section further comprising: a power supply-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power supply-side core; and the movable section further comprising a power receiving-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power receiving-side core; and a gap-covering section, being integrally formed with the power supply-side bracket section or the power receiving-side bracket section provided by the non-ferromagnetic metal material, which covers an outer portion of a magnetic gap that is a part of a magnetic loop formed with the power supply-side core and the power receiving-side core disposed to face each other, wherein the gap-covering section extends to the vicinity of power supply-side bracket section. a power supply-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power supply-side core; and the movable section further comprising a power receiving-side bracket section, being made of non-ferromagnetic metal material, which covers at least the outer surface of the bottom section of the power receiving-side core; and a gap-covering section, being integrally formed with the power supply-side bracket section or the power receiving-side bracket section provided by the non-ferromagnetic metal material, which covers an outer portion of a magnetic gap that is a part of a magnetic loop formed with the power supply-side core and the power receiving-side core disposed to face each other, wherein the gap-covering section extends to the vicinity of power supply-side bracket section.