| 摘要 |
<p>PURPOSE:To obtain a product having excellent dimensional accuracy and abrasion withstandability without requiring special securing member, by spliting the cylinder body into inside and outside members and molding independently then pressure inserting the inside member into hollow section of outside member. CONSTITUTION:When manufacturing a cylinder body B, it is splited into cylindrical body inside member Bi having a cylinder hole 1 and body outside member Bo integrally projected with oil reservoir R and back-mirror fixing boss 9 at one side. Here the inside member Bi is molded, for example, of abrasion-withstandable metal or hard resin while the outside member Bo is molded of synthetic resin having light- permeability and excellent chamical resistance, where the inner diameter of hollow section 10 is made smaller than the outer diameter by the fastening margin (s) against inside member Bi. The inner member Bi is pressure inserted into the hollow section 10 of outside member Bo to expand the inner wall of hollow section 10 by the fastening margin (s) and to couple both members Bi. Bo.</p> |
