PROBLEM TO BE SOLVED: To prevent such a problem that the attachment and detachment is not easy in a resin molded tine unless a round pipe material formed by penetrating a fixing hole vertically is matched accurately with a welding position of a support part where a notch is formed.SOLUTION: When a tine (33) is fixed to a tine fixing rod (32), a slip-off stopping part (43) with a larger diameter than that of a fixing hole (41) projects upward from the tine fixing rod (32), and the tine (33) is prevented from falling off downward. The tine fixing rod (32) is held between a front side holding piece (44a) and a backside holding piece (44b) in a state that an opening (49) of a holding part (44) keeps an interval smaller than the front-back width of the tine fixing rod (32), and the rotation of the tine (33) to right and left is prevented.COPYRIGHT: (C)2013,JPO&INPIT【課題】取付け孔を上下に貫通形成した丸パイプ材とノッチを切欠き形成した支持部の溶接位置を正確に合わさないと、樹脂成形されたタインが着脱しにくくなるという課題があった。【解決手段】タイン(33)をタイン取付杆(32)に装着時は、抜け止め部(43)が取付孔(41)の孔径より径大の状態でタイン取付杆(32)の上部に突出することで、タイン(33)の下方への脱落を阻止し、挟持部(44)の開放部(49)がタイン取付杆(32)の前後幅より小さい間隔を維持した状態で、前側挟持片(44a)及び後側挟持片(44b)によりタイン取付杆(32)を挟持することで、タイン(33)の左右への回転を阻止した。【選択図】図4
