| 摘要 |
<P>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. <P>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. <P>COPYRIGHT: (C)2013,JPO&INPIT |
