| 摘要 |
PROBLEM TO BE SOLVED: To reduce friction and to improve durability by making contacting surfaces between a main body and a cover curved or slanted. SOLUTION: A top part of a main body 1a is provided with a main body receiving part 1b, a bottom part is provided with a main body sending part 1c, upper part of a central part is provided with a display part 1e, a center part of the central part is provided with operation keys 1d and a bottom part of the central part is provided with a cover 3a. Also, the bottom part of the body 1a is provided with body side component containing parts 3g and 3h, and the cover 3a is provided with cover arm parts 3b and 3c which sandwich the parts 3g and 3h from both sides. A connecting part which attaches the cover 3a to the body 1a becomes an axis for rotating the cover 3a and has cover locks 3d and 3e which fix the cover 3a at a prescribed angle and coil springs 3f which slide the cover locks 3d and 3e. The connecting part is contained in the parts 3g and 3h. Contacting surfaces between the body 1a, the cover 3a and each component part that is necessary to assemble them, are made curved or slanted. |
