| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of easily assembling a sash for which a unit sash is disposed.SOLUTION: Apertures for engaging 11b, 12b, 13b, 14b are formed on depth surfaces of outer frame members 11, 12, 13, 14 of an outer frame 10 which are opposed to inner frame members 211, 212, 213, 214. Between the outer frame members 11, 12, 13 of the outer frame 10 and the inner frame members 211, 212, 213 corresponding to the outer frame members 11, 12, 13, outer engaging pieces 11c, 12c, 13c and inner engaging pieces 211a, 212a, 213a are so configured as to engage with one another to be detachable within the outer frame members 11, 12, 13 through the apertures for engaging 11b, 12b, 13b as a result of the outer frame members 11, 12, 13 and the inner frame members 211, 212, 213 sliding relative to one another along a longer direction, and to prevent one another from moving in a separating direction. |
