Mobile terminal

A mobile terminal comprising:

• a terminal main body that includes
• a front case which forms an internal area that includes a submergence area into which water is introduced and a waterproof area into which water is blocked from being introduced, and
• an internal frame;
• a first unit that includes a key module which is mounted in the terminal main body and, when pressing occurs, generates a control command, the key module being positioned in the submergence area and moving due to an external force;
• a second unit that is positioned in the waterproof area and, when the pressing occurs, generates a signal;
• an elastic deformation layer of which a portion is elastically deformed due to movement of the first unit, in such a manner that the second unit is pressed by the first unit;
• and
• a waterproof layer that attaches the elastic deformation layer and the front case in such a manner that partitioning results in the submergence area and the waterproof area, and that includes a through hole through which the first unit passes,
• wherein the elastic deformation layer includes:
• a first sheet that is adhered to the waterproof layer, and
• a second sheet that is elastically deformed and is made of a material which is different from that of the first sheet,
• wherein the elastic deformation layer includes a groove which is formed in an area adjacent to an area that is brought into contact with the first unit, in such a manner that deformation occurs due to movement of the first unit,
• wherein the groove is recessed from a surface of the elastic deformation layer not being attached to the waterproof layer, and
• wherein a thickness of a portion in the vicinity of the groove of the elastic deformation layer is decreased due to the groove.