US Patent 7664470 Wireless transceiver and method for producing the same

A wireless transceiver includes a resin case having a hollow space that accepts the mechanical key, a mechanical key having a hook for engagement with the resin case, and a reinforcement made of a metal plate for reinforcing the resin case. The hollow space in the resin case is defined by a combination of a thin wall and a thick wall, and the resin case has a depression that accepts the hook on the mechanical key when the mechanical key is accepted in the hollow space. The reinforcement disposed in the proximity of the depression in the thin wall bridges the thin wall and the thick wall when the reinforcement is either embedded in or fixed on both of the thin wall and the thick wall.