Problem to be solved: to provide a tube bonding apparatus capable of preventing the engagement claw of the cover portion from being engaged with the engagement portion and suppressing the idle rotation.Tube junction deviceAfter melting the end of the two tubesThe fused end of the tube is replaced and joined.A pedestal having a holding part for holding the tube andThe lid is open and closed against the pedestalAndThe pedestal is provided with an engaging portion capable of engaging with the lid portion；The lid can cover the retaining portion andA first rotating shaft for rotatably supporting a cover against a pedestalIt is rotatable for the cover.Engagement claw 225 capable of engaging with the mating portion of the pedestalA second rotary shaft 227 for rotatably supporting engagement claw with respect to the coverProvided at the lid.An urging portion 228 for urging the engagement pawl in the second rotation direction opposite to the first rotation direction in which the engaging pawl engages with the engaging portion, and.Selection diagram【課題】蓋部の係合爪が被係合部に係合せず、空転してしまうことを抑制可能なチューブ接合装置を提供する。【解決手段】チューブ接合装置は、２つのチューブの端部を溶断した後、チューブの溶断した端部を入替えて接合し、チューブを保持する保持部を設けた台座と、台座に対して開閉可能に設置される蓋部と、を有し、台座は蓋部と係合可能な被係合部を備え、蓋部は保持部を包囲可能なカバーと、台座に対してカバーを回動可能に支持する第１回転軸と、カバーに対して回動可能に設けられ、台座の被係合部と係合可能な係合爪２２５と、カバーに対して係合爪を回動可能に支持する第２回転軸２２７と、蓋部に設けられ、係合爪が被係合部に係合する第１回転方向と逆側の第２回転方向に係合爪を付勢する付勢部２２８と、を備える。【選択図】図１１
