| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the fitting part of a multiple needle base not requiring the mutual positional alignment of needle bases when the adjacent needle bases of a multiple needle are fitted, blindly enabling insertional mounting and capable of certainly prescribing revolutionary operation. <P>SOLUTION: In the fitting parts of the adjacent outside and inside bases of the multiple needle, a large number of projections the same in shape are provided to the outer peripheral surface of one base while a large number of grooves the same in shape fitted to the projections are provided to the inner peripheral surface of the other base. The respective projections and grooves are formed as an uneven shape continuing circumferentially over one periphery and the projections are formed into a triangular pyramid shape so that the end parts of them become tapered in the connection direction with the other base while the grooves are formed as long grooves having length in a direction parallel to an axis and formed so as to have a V-shaped cross section. <P>COPYRIGHT: (C)2012,JPO&INPIT |
