主权项 |
1. An attachment member, comprising:
a first member comprising:
a bottom plate; andfirst and second side walls that face each other, that are connected to two sides of the bottom plate opposite to each other, respectively, and that extend upward from the bottom plate, the first and second side walls each comprising an inner surface and an outer surface; a first engagement portion on the inner surface of the first side wall, comprising a plurality of first engaging elements; a second engagement portion on the outer surface of the second side wall, comprising a plurality of second engaging elements; a second member disposed on the first member, and comprising:
a top plate facing the bottom plate; andthird and fourth side walls that face each other, that are connected to two sides of the top plate, and that extend downward from the top plate, the third and fourth side walls each comprising an inner surface and an outer surface; a third engagement portion on the outer surface of the third side wall, comprising a plurality of third engaging elements that engage with the first engaging elements; a fourth engagement portion on the inner surface of the fourth side wall, comprising a plurality of fourth engaging elements that engage with the second engaging elements; and a fixing member that fixes the second member to the first member. |