A clip, comprising: a first member adapted to engage a first attached member; and a second member supported in the first member, and adapted to engage a second attached member, wherein the clip is adapted to mutually connect both the attached members, and also when a load acts in a direction separating both the attached members from each other, the clip allows a separation of both the attached members only for a predetermined distance, wherein the first member includes a base portion adapted to engage the first attached member; a protruding piece portion formed in a plate shape having a face facing a right-and-left direction and provided to protrude upward from a center portion of an upper surface of the base portion in the right-and-left direction; and an expanded head portion wider than the protruding piece portion formed in an end portion of the protruding piece portion on right and left side surfaces, protruding to the left and the right direction, wherein the second member includes a through hole in which the protruding piece portion loosely passes through; and a cylinder portion supporting the protruding piece portion so as to be capable of being displaced in a protruding direction thereof, and the protruding piece portion is retained in the cylinder portion by the base portion and the expanded head portion, wherein the base portion comprises an engaging portion and the cylinder portion comprises another engaging portion, wherein the base portion and the cylinder portion are connected by said engaging portions (35, 64) which is capable of releasing an engagement with a load smaller than an engagement between the base portion and the first attached member and an engagement between the cylinder portion and the second attached member, and wherein in a state, where the engagement of the engaging portions (35, 64) is released, an axis line of the cylinder portion is capable of inclining and tipping relative to the protruding direction of the protruding piece portion, wherein a hole wall of the through hole includes an elastic piece which can be displaced in a direction orthogonal to an axis line direction of the through hole, wherein the elastic piece includes a projection protruding to a center side of the through hole, and wherein the projection abuts against the expanded head portion so as to retain the cylinder portion relative to the protruding piece portion, wherein each expanded head portion comprises an inverted stop surface facing downward on a lower end, and an upper portion of the inverted stop surface comprises sloping surfaces facing upward and facing the right and left sides, wherein each projection comprises an inverted stop surface facing upward on an upper portion thereof, and comprises a rib continuing to the elastic piece on a lower portion thereof. a first member adapted to engage a first attached member; and a second member supported in the first member, and adapted to engage a second attached member, wherein the clip is adapted to mutually connect both the attached members, and also when a load acts in a direction separating both the attached members from each other, the clip allows a separation of both the attached members only for a predetermined distance, wherein the first member includes a base portion adapted to engage the first attached member; a protruding piece portion formed in a plate shape having a face facing a right-and-left direction and provided to protrude upward from a center portion of an upper surface of the base portion in the right-and-left direction; and an expanded head portion wider than the protruding piece portion formed in an end portion of the protruding piece portion on right and left side surfaces, protruding to the left and the right direction, wherein the second member includes a through hole in which the protruding piece portion loosely passes through; and a cylinder portion supporting the protruding piece portion so as to be capable of being displaced in a protruding direction thereof, and the protruding piece portion is retained in the cylinder portion by the base portion and the expanded head portion, wherein the base portion comprises an engaging portion and the cylinder portion comprises another engaging portion, wherein the base portion and the cylinder portion are connected by said engaging portions (35, 64) which is capable of releasing an engagement with a load smaller than an engagement between the base portion and the first attached member and an engagement between the cylinder portion and the second attached member, and wherein in a state, where the engagement of the engaging portions (35, 64) is released, an axis line of the cylinder portion is capable of inclining and tipping relative to the protruding direction of the protruding piece portion, wherein a hole wall of the through hole includes an elastic piece which can be displaced in a direction orthogonal to an axis line direction of the through hole, wherein the elastic piece includes a projection protruding to a center side of the through hole, and wherein the projection abuts against the expanded head portion so as to retain the cylinder portion relative to the protruding piece portion, wherein each expanded head portion comprises an inverted stop surface facing downward on a lower end, and an upper portion of the inverted stop surface comprises sloping surfaces facing upward and facing the right and left sides, wherein each projection comprises an inverted stop surface facing upward on an upper portion thereof, and comprises a rib continuing to the elastic piece on a lower portion thereof.