Patent ID: 7999508
Filing Date: 2011-08-16
Classification: H02J

Abstract:
1. A universal battery charger, comprising: a) a housing having an L-shaped first locating surface including a circuit board provided at a front end thereof for a charging control, a platform perpendicular to a locating surface having a first slide slot in the longitudinal direction of X-X, a guide slot parallel to the first slide slot being positioned near both sides of the platform, respectively; b) two conductive plates laterally displaced one from the other and disposed within the housing, the front end thereof electrically connected to the circuit board; c) two terminal-adjusting units each having a main body made by insulated material, a contact terminal made by a metal piece being symmetrically positioned at a left and right side thereof, the contact terminals establishing an electric connection with the corresponding conductive plates, a slider engaging into the first slide slot of the housing being disposed at a center of the terminal-adjusting units, a terminal piece extending from the slider being exposed at the platform, a push lever projecting at the opposite side of the slider; d) a slide cover formed corresponding to the L-shaped housing and having a second locating surface corresponding to and leaning against the first locating surface, the slide cover further having a groove positioned at the center thereof and corresponding to the first slide slot, the slide cover further having a protrusion and a positioning piece at the both sides of the front end thereof such that a smooth movement of the slide cover on the platform is achieved and no disengagement takes place; e) two springs each having a front end mounted within the head of the housing and a rear end mounted on the protrusion such that the springs constantly apply a resilient force to the first locating surface; and f) a bottom cover fixed on the bottom surface of the housing and having an arched groove at a position corresponding to the first slide slot of the housing, a second slide slot being positioned at the center of the arched groove, the push levers of the terminal-adjusting units passing through the second slide slot thereby jutting out of the arched groove, the push lever slidable to physically position the terminal pieces to electrically engage the charging interface of the battery during charging of said battery; wherein the second locating surface of the slide cover forms a substantially continuous contour with the first locating surface when the universal battery charger does not contain said battery therewithin; wherein, in charging, the slide cover is slidable to accommodate the battery to create a charging space between the second locating surface and the first locating surface of the housing.