Patent ID: 6724171
Filing Date: 2004-04-20
Classification: H02J

Abstract:
A movable plug-head for a travel-type battery charger, wherein the charger comprises a main body that includes a top cover and a bottom cover and a substrate board enclosed inside the main body, and the bottom cover has a pair of parallel open grooves, the movable plug-head comprising:a plug mounted on the inner surface of the bottom cover, wherein the plug comprises two metallic plates, a rotary axle and two clamping blocks; wherein the metallic plates are enclosed inside the open grooves having a long linear shape parallel to each other similar to mirror reflection, and each metallic plate has a first end and a second end with the first end extended into the main body; the rotary axle and the metallic plates are joined together near the first end and mounted inside the main body so that the metallic plates are free to rotate from a horizontal position inside the open grooves to a vertical position relative to the bottom cover, exposing the second end of the metallic plates outside the main body; the clamping blocks are positioned around the first end of the metallic plates, each clamping block has a first planar surface, a second planar surface, a third planar surface and a fourth planar surface, the first planar surface and the second planar surface are perpendicular to each other, the third planar surface and the first planar surface are parallel to each other, the fourth planar surface and the second planar surface are parallel to each other, the first planar surface has a first protruded spine and the second planar surface has a second protruded spine; and a pair of stationing clamps mounted in the interior of the bottom cover, wherein the stationing clamps are made from a conductive material and include two gripping spring plates, a first spring plate and a second spring plate, the first spring plate contacts and electrically connects with the substrate board, the pair of gripping spring plates are roughly parallel to each other, the spring plates of each stationing clamp grip a clamping block, and the second end of the metallic plates are in contact with the second spring plates when the metallic plates are pulled from the horizontal position inside the open grooves to a vertical position perpendicular to the bottom cover; wherein the spring plates of each stationing clamp grip the second protruded spine and the fourth planar surface of the clamping block when the metallic plates are retracted to a horizontal position inside the open grooves, and the spring plates of each stationing clamp grip the first protruded spine and the third planar surface of the clamping block when the metallic plates are pulled out to a vertical position relative to the bottom cover.