| 摘要 |
<p>In a case having a cover and a case body which are openably connected to each other via a shaft and a shaft inserting portion, a quantity of gel to be used can be reduced while a braking effect of the cover is satisfactorily secured. A shaft 23 is inserted into a shaft inserting portion 24 in such a manner that a cover 3 is turned with respect to a case body 2 on the shaft 23 to be thus opened. There is provided urging means 27 for urging the cover 3 in an opening direction. A viscous material is charged between the shaft 23 and the shaft inserting portion 24 in such a manner that the cover 3 is slowly opened with respect to the case body 2. An engaging projection 31 is disposed at either one of the shaft 23 and the shaft inserting portion 24 while an engaged recess 30 engageable with the engaging projection 31 is disposed at the other in such a manner as to enlarge a contact area between the shaft 23 and the shaft inserting portion 24 via the viscous material.</p> |
