EXTENSION SYSTEM

PROBLEM TO BE SOLVED: To provide an extension system which is connected to an electronic device on which battery projected from the back of the electronic device is mounted and which has various sizes. SOLUTION: In a main body 2, projection parts 13a and 13b projected from an upper wall 3 are separately installed. A slide board 8 provided to the upper wall 3 can slide between a pair of the projection parts 13a and 13b, and a pair of constraint walls 9a and 9b are separately arranged. The constraint walls 9a and 9b abut on the back of the electronic device. An aperture 11 is formed in the center of an upper surface of the slide board 8. A control lever 12 which locks on/unlocks sliding of the slide board 8 is installed in this aperture 11 so that it can turn up and down. The slide board 8 is slidable between a first position slid in a connector direction and a second position located between a pair of the projections 13a and 13b in a state the control lever 12 is unlocked. COPYRIGHT: (C)2005,JPO&NCIPI