| 摘要 |
PROBLEM TO BE SOLVED: To use an opening sufficiently when used as a trunk through, use one side of the main body of an armrest at the time of using and storing the main body of the armrest, reduce the cost of the main body of the armrest and perform an operation simply and quickly. SOLUTION: A flat engaging piece 31 is formed to project obliquely forward upward in both sides of the lower part of the main body of an armrest 23. An engaging bracket 33 having an engaging groove 35 directed obliquely forward upward to engage the engaging piece 31 is fixed to both sides of the lower part of an opening 14. The flat engaging piece 31 is engaged in the engaging groove 35 of the engaging bracket 33 of the opening 14 in a state in which the main body of the armrest 23 is stored. The main body of the armrest 23 is taken out obliquely forward upward from the inside of the opening 14 and reversed, and the flat engaging piece 31 of the main body of the armrest 23 is engaged in the engaging groove 35 of the engaging bracket 33 of the opening to bring the armrest into the state of use.
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