| 摘要 |
A method includes the steps of (1) wrapping a shock absorbent member around a columnar member, (2) supporting one end portion of a cylindrical housing on a support member, (3) arranging the columnar member in a cylindrical guide member formed with the tapered portion inside thereof, (4) inserting the shock absorbent member and the columnar member into the cylindrical housing through the tapered portion, (5) pressing a pushing member to the columnar member so as to be moved along the longitudinal axis thereof relative to the cylindrical housing, to accommodate the shock absorbent member and the columnar member in the cylindrical housing, (6) moving the support member and a shrinking mechanism relative to each other, and (7) actuating the shrinking mechanism to reduce the diameter of a part of the cylindrical housing.
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