| 摘要 |
The present invention relates to a coupler, in which a guard cap coupled to a high-frequency heat-sealed cap member is additionally provided at both ends of the body member to prevent the collator and the tube from separating from the body member and cut off foreign matter from flowing into the body member, and the color of the guard cap is made different to make it easy to identify from outside the contents flowing in the tube. The coupler comprises a coupling member 200 and 200a having a plurality of guide protrusions 210 and 210a that are formed at predetermined lengths and regularly spaced intervals and extended along the outer rim of a cap member 12 and stop protuberance 220 that is bent-formed at one end portion of the guide protrusions 210 and 210a; and a guard cap 100 that is coupled to said coupling member 200 and 200a so as to prevent the collator 30 and the tube 20 from being separated from the body member 11 by external force and foreign matter from infiltrating into said tube 20 from outside.
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