| 摘要 |
PROBLEM TO BE SOLVED: To make reliability of removal work higher in addition to provision of the ease and rapidity of the shield removal work.SOLUTION: A helmet includes a release part 4A that is fitted in between a shield 1 and a base plate. The release part 4A pushes and extends the shield 1 to the outside of a cap body A1 in association with a release operation of a release operator 4. Thus, connection between a connection guidance part and a guidance part of one of first and second guide parts 2 and 3 is released along an axial direction of the guidance part.SELECTED DRAWING: Figure 7 |
