| 摘要 |
<p>PROBLEM TO BE SOLVED: To unnecessitate any additional parts of countermeasure, etc., and to reduce cost by fitting a cylinder to each receiving boss of a chassis with a screw and preventing deformation of the cylinder due to tightening of the screw. SOLUTION: If working force of deforming the cylinder 2 by tightening this crew, for example, in a VTR of a VHS system is denoted as F, while a distance between the receiving bosses 1b in two places is L=54mm, a diameter of the receiving boss 1b is D=0.6mm and reaction force to be given to the outer circumferential end of the receiving boss 1b is R, (6/2)×F=54+6R and R=(1/20)×F are established, and it is found that influence of force upon the cylinder 2 is only by one twentieth of the screw-tightening force F.</p> |
