| 摘要 |
<p>A chain connection link 1 includes: a pair of U-shaped links 1 a, 1 b of a U-shaped configuration in front view and each having two arms; a connection arm portion 2a, 2b provided at an end portion of one arm of each of these U-shaped links; a connection groove-shaped arm portion 4a, 4b having a groove 3a, 3b and provided at an end portion of the other arm of each of these U-shaped links; and through-holes 7a, 7b provided in the connection arm portion and the connection groove-shaped arm portion, the connection arm portion of one U-shaped link being fit-engaged with the connection groove-shaped arm portion of the other U-shaped link, a connection shaft 5 being passed through the through-holes to connect the pair of U-shaped links, wherein the size of the outer periphery of the connection groove-shaped arm portion is larger than the size of the outer periphery of the connection arm portion.</p> |
