| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seal structure capable of preventing a seal member from coming out of a guide member and enabling the replacement of the seal member. <P>SOLUTION: A needle bar 12 is guided by a tubular needle bar receiving members 29 and 30 and reciprocatingly and displaceably driven in the axial direction. Needle bar seal members 33 and 34 comprise outer peripheral base parts 40, oil seal parts 50, and dust seal parts 52, and are fitted to the needle bar receiving members 29 and 30 by the outer peripheral base part 40. A contact face 53 supporting the axial displacements of the needle bar receiving members 29 and 30 is formed on the outer peripheral base part 40. Thus, the outer peripheral base part 40 can be prevented from being axially displaced relative to the needle bar receiving members 29 and 30. As a result, even if the needle bar seal members 33 and 34 are fitted to a needle bar 12 reciprocatingly and displaceably driven, the needle bar seal members 33 and 34 can be securely prevented from coming out of the needle bar receiving members 29 and 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
