Sealing cap and detaching method of sealing cap

Abstract

Provided is a sealing cap including: a body having a cylindrical part and a sealing part; an annular part having the inner diameter larger than the outer diameter of the cylindrical part; a first coupling part coupling the cylindrical part and the annular part to each other at a first coupling position; and a second coupling part coupling the cylindrical part and the annular part to each other at a second coupling position. A pair of first grooves are formed in the cylindrical part, a pair of second grooves are formed in the sealing part so as to extend in a second direction and interpose an axis, the pair of first grooves are connected to the pair of second grooves, the first coupling position is a position interposed between the pair of first grooves, and the second coupling position is another position not interposed between the pair of first grooves.

What is claimed is: 
     
         1 . A sealing cap for sealing a plug attached to an opening of a liquid container, the sealing cap comprising:
 a body having a cylindrical part and a sealing part, the cylindrical part being formed cylindrically along an axis, and the sealing part sealing a top end of the cylindrical part, being arranged along a plane orthogonal to the axis, and being circular in planar view;   an annular part formed annularly about the axis and having an inner diameter that is larger than an outer diameter of the cylindrical part;   a first coupling part coupling the cylindrical part and the annular part to each other at a first coupling position in a circumferential direction about the axis; and   a second coupling part coupling the cylindrical part and the annular part to each other at a second coupling position in the circumferential direction, the second coupling position being different from the first coupling position,   wherein the body, the first coupling part, and the second coupling part are integrally formed with a resin material,   wherein a pair of first grooves extending in a first direction along the axis are formed in an outer circumferential face of the cylindrical part,   wherein a pair of second grooves are formed in an outer circumferential face of the sealing part so as to extend in a second direction orthogonal to the first direction and interpose the axis,   wherein the pair of first grooves are connected to the pair of second grooves,   wherein the first coupling position is a position interposed between the pair of first grooves, and   wherein the second coupling position is another position not interposed between the pair of first grooves.   
     
     
         2 . The sealing cap according to  claim 1 ,
 wherein the annular part includes   an annular member coupled to the cylindrical part by the first coupling part and arranged at a first position in the first direction,   a grip member arranged at a second position in the first direction, and   a pair of connecting members connecting the annular member and the grip member to each other, and   wherein the second position is a position closer to a plane than the first position, the sealing part being arranged on the plane.   
     
     
         3 . The sealing cap according to  claim 2 , wherein in a third direction orthogonal to the first direction and the second direction, the length of the grip member is longer than the length of a region of the sealing part, the region being interposed between the pair of second grooves. 
     
     
         4 . The sealing cap according to  claim 1  further comprising a third coupling part coupling the cylindrical part and the annular part to each other at a third coupling position different from the first coupling position in the circumferential direction,
 wherein the second coupling position and the third coupling position are the same positions in the second direction and different positions in a third direction orthogonal to the first direction and the second direction. 
 
     
     
         5 . The sealing cap according to  claim 2 ,
 wherein in the first direction, the first grooves are formed upward from a third position to a position connected to the second grooves, the third position being above the first position, and   wherein in the first direction, a pair of cutouts connected to the pair of first grooves are formed in the cylindrical part downward from the third position to the bottom end of the cylindrical part.   
     
     
         6 . The sealing cap according to  claim 1 , wherein a protruding part configured to be secured to the plug is formed to an inner circumferential face of the cylindrical part. 
     
     
         7 . A detaching method of a sealing cap used for sealing a plug attached to an opening of a liquid container,
 wherein the sealing cap comprises   a body having a cylindrical part and a sealing part, the cylindrical part being formed cylindrically along an axis, and the sealing part sealing a top end of the cylindrical part, being arranged along a plane orthogonal to the axis, and being circular in planar view,   an annular part formed annularly about the axis and having an inner diameter that is larger than an outer diameter of the cylindrical part,   a first coupling part coupling the cylindrical part and the annular part to each other at a first coupling position in a circumferential direction about the axis, and   a second coupling part coupling the cylindrical part and the annular part to each other at a second coupling position in the circumferential direction, the second coupling position being different from the first coupling position,   wherein the body, the first coupling part, and the second coupling part are integrally formed with a resin material,   wherein a pair of first grooves extending in a first direction along the axis are formed in an outer circumferential face of the cylindrical part,   wherein a pair of second grooves are formed in the sealing part so as to extend in a second direction orthogonal to the first direction and interpose the axis,   wherein the pair of first grooves are connected to the pair of second grooves,   wherein the first coupling position is a position interposed between the pair of first grooves, and   wherein the second coupling position is another position not interposed between the pair of first grooves,   the detaching method comprising:   gripping an end in the second direction of the annular part and rotating the annular part about the first coupling position in a direction away from the sealing part to release a coupled state of the second coupling part; and   gripping the end in the second direction of the annular part and moving the annular part so as to cause cracks to occur in the pair of first grooves and the pair of second grooves to release a state where the sealing cap seals the opening.