Battery loading and unloading mechanism

A battery loading and unloading mechanism for loading and unloading a flat almost-rectangular parallelepipedic battery to and from a device to be detachably equipped with the battery,

• wherein the battery is formed with first and second projecting portions having different shapes from one another located at both longitudinal ends of a back frame portion of the battery and extending along the back frame portion and being within a thickness of the back frame portion, the back frame portion also being opposite to an insertion surface of the battery inserted into the device, the thickness of the back frame portion extending towards the insertion surface of the battery, whereby the battery formed in the flat almost-rectangular parallelepipedic shape and having an almost-square main surface is prevented from being erroneously inserted into the device;
• the device having a notched portion formed in an outermost surface of the device and adapted to receive and expose the second projecting portion at the time of loading the battery thereby facilitating unloading of the battery.

A battery loading and unloading mechanism for loading and unloading a flat almost-rectangular parallelepipedic battery to and from a device to be detachably equipped with the battery,

• wherein the battery is formed with a back frame portion and a first side surface connected to and substantially perpendicular to the back frame portion, the back frame portion having a thickness extending towards an insertion surface of the battery, the back frame portion also having first and second projecting portions having different shapes from one another located at both longitudinal ends of a back frame portion and being within the thickness of the back frame portion, the first and second projecting portions being located in a plane substantially perpendicular to the first side surface, the back frame portion being opposite to the insertion surface of the battery inserted into the device, whereby the battery formed in the flat almost-rectangular parallelepipedic shape and having an almost-square main surface is prevented from being erroneously inserted into the device;
• the device having a notched portion formed in an outermost surface of the device and adapted to receive and expose the second projecting portion at the time of loading the battery thereby facilitating unloading of the battery.