| 摘要 |
PURPOSE:To easily provide a clue for peeling off a film and at the same time eliminate the possibility of the loss of a chipping member by a method wherein the chipping member to contact with and separate from the surface of a frame body by sliding onto a leg part, which is provided thereon and at the tip of which a cotter part to prevent said leg part from coming out of an inserting hole is provided, is inserted into the inserting hole made on the frame body. CONSTITUTION:The apex 18a of an elastic claw is shifted along the inner wall part of an inserting hole 15 to the surface side of a frame body 13 by pushing the tip 17a of a leg part in the direction opposite to that indicated by the arrow A so as to slide in the inserting hole 15. Consequently, a chipping member 16 departs from the surface of a frame body 13 while stretching a coating film 20 ranging from the peripheral part of the chipping member to the surface of the surface of the frame body 13 and especially to the front edge of a suction port 4 so as to form a space B between the chipping member 16 and the frame body 13. Because a leg part 17 is brought into a cottered state relative to the inserting hole 15 by abutting the projection 19a of a cotter part against the end 15a of the inserting hole and the sliding of the leg part in the direction indicated by the arrow A is checked by abutting the face 18c of the elastic claw against the edge of the inserting hole 15, the leg part 17 holds the chipping member 16 in a state separated from the surface of the frame body 13. Thus,a clue 21 for peeling off the film 20 is provided by sticking a penknife to the film 20. |
