Patent ID: 8098326

Claim:
An accessory device that is connectable to an accessory mounting section of an electronic device, the accessory device comprising: an exterior case; an insert section which protrudes from the exterior case and which includes an end portion having a first side surface and a second side surface disposed on opposing sides of the end portion between a front face of the end portion and a back face of the end portion; a first locking part and a second locking part that each extend from the first side surface and which are separated from each other by a concave portion; and another first locking part and another second locking part that each extend from the second side surface and which are separated from each other by another concave portion; the first locking part and the another first locking part each being coplanar with an end surface of the end portion; the second locking part including a guide portion which protrudes from the end surface of the end portion, and the another second locking part including another guide portion which protrudes from the end surface of the end portion; and the first side surface and the second side surface being configured such that the end portion of the insert section is insertable into an opening formed between a first locking plate and a second locking plate of an electronic device by moving the end portion along a first direction, and the end portion of the insert section is then movable within the accessory mounting section of the electronic device along a second direction that is substantially perpendicular to the first direction, the guide portion and the another guide portion permitting the end portion of the insert section to be inserted into the opening formed between the first locking plate and the second locking plate of the electronic device at a first orientation with respect to the opening and preventing the end portion of the insert section from being inserted into the opening formed between the first locking plate and the second locking plate of the electronic device at a second orientation that is a reverse of the first orientation.