Spout unit, package, and contents-filled package

Abstract

A spout unit includes a cap with a cap projection and a spout with a spout projection. When the cap rotates in a closing direction, the cap projection crosses the spout projection. When the spout fixed to a package body is observed downward in the vertical direction, the spout projection is in a left region or a right region. The left and right regions are demarcated by a first line and a second line, and share a reference line orthogonal to a center axis of the spout and extending in the long direction of the package body. The first line is the reference line rotated at an angle of 50° about the center axis in the closing direction, and the second line is the reference line rotated at an angle of 50° about the center axis in a direction opposite to the closing direction.

What is claimed is: 
     
         1 . A spout unit comprising a cap and a spout, wherein 
       the cap includes a cap main body and a cap projection, 
       the cap main body has a cap main body inner circumferential surface and a cap main body outer circumference surface, 
       the cap main body inner circumferential surface is provided with a first screw thread or a first screw groove, 
       the spout is formed to be fixed to a package main body, and the spout includes a spout main body and a spout projection, 
       the spout main body has a cylindrical shape, 
       a center axis of the cylindrical shape extends in a vertical direction of the package main body to which the spout is fixed, 
       the spout main body is provided with a second screw groove engaged with the first screw thread or a second screw thread engaged with the first screw groove, 
       the cap projection and the spout projection are formed such that when the cap rotates in a closing rotation direction, the cap projection crosses the spout projection to close the spout, 
       when the spout is closed, a length of the cap main body in a long direction of the package main body to which the spout is fixed is longer than a length of the cap main body in a short direction of the package main body, and a length of the cap projection in the vertical direction of the package main body to which the spout is fixed is shorter than a length of the cap projection in a cap rotation direction, 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, the spout projection is positioned in a left region or a right region, 
       the left region and the right region are demarcated by a first straight line and a second straight line, and the left region and the right region include a reference straight line, 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, the reference straight line is orthogonal to the center axis and extends in the long direction of the package main body, 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, the first straight line is the reference straight line rotated at an angle of 50° about the center axis in the closing rotation direction, and 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, the second straight line is the reference straight line rotated at an angle of 50° about the center axis in a direction opposite to the closing rotation direction. 
     
     
         2 . The spout unit according to  claim 1 , wherein 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, a projection that contacts the cap projection is not provided in either a front region or a rear region, and 
       the front region and the rear region are demarcated by the first straight line and the second straight line, and the front region and the rear region do not include the reference straight line. 
     
     
         3 . The spout unit according to  claim 1 , wherein 
       the spout is formed to be fixed to the package main body that accommodates a food. 
     
     
         4 . The spout unit according to  claim 1 , wherein 
       the cap projection projects downward from a lower end portion of the cap main body in the vertical direction of the package main body, and 
       when the spout fixed to the package main body is observed downward in the vertical direction of the package main body, the spout projection projects from the spout main body in a direction apart from the center axis. 
     
     
         5 . The spout unit according to  claim 1 , wherein 
       the cap and the spout main body are formed such that when the cap rotates in the closing rotation direction and the cap projection crosses the spout projection, a top end of the spout main body contacts a top surface of the cap main body. 
     
     
         6 . A package comprising the spout unit according to  claim 1  and the package main body. 
     
     
         7 . A contents-filled package comprising the package according to  claim 6  and contents accommodated in the package main body. 
     
     
         8 . A spout unit comprising a cap and a spout, wherein 
       the cap includes a cap main body and a cap projection, 
       the cap main body has a cap main body inner circumferential surface and a cap main body outer circumference surface, 
       the cap main body inner circumferential surface is provided with a first screw thread or a first screw groove, 
       the spout is formed to be fixed to a package main body, and the spout includes a spout main body and a spout projection, 
       the spout main body has a cylindrical shape, 
       a center axis of the cylindrical shape extends in a vertical direction of the package main body to which the spout is fixed, 
       the spout main body is provided with a second screw groove engaged with the first screw thread or a second screw thread engaged with the first screw groove, 
       the cap projection and the spout projection are formed such that when the cap rotates in a closing rotation direction, the cap projection crosses the spout projection to close the spout, 
       the cap projection and the spout projection have configuration A or configuration B below, 
       configuration A: 
 the cap projection includes a first section and a second section, 
 the first section is positioned in front of the second section in the closing rotation direction, 
 when the cap projection is observed in a direction orthogonal to a first direction and the closing rotation direction, an outer edge of the cap projection in the first section extends in the first direction, as extending toward the closing rotation direction, 
 an outer edge of the cap projection in the second section extends in the first direction, as extending toward a direction opposite to the closing rotation direction, 
 the first direction is a direction from the spout projection to the cap projection when the cap projection is at a middle position between a contact start position to the spout projection and a contact complete position to the spout projection during which the cap rotates in the closing rotation direction to close the spout, and 
 a length of the first section in a cap rotation direction is longer than a length of the second section in the cap rotation direction, and 
 configuration B: 
 the spout projection includes a third section and a fourth section, 
 the fourth section is positioned in front of the third section in the closing rotation direction, 
 when the spout projection is observed in a direction orthogonal to a second direction and the closing rotation direction, an outer edge of the spout projection in the third section extends in the second direction, as extending toward a direction opposite to the closing rotation direction, 
 an outer edge of the spout projection in the fourth section extends in the second direction, as extending in the closing rotation direction, 
 the second direction is a direction from the cap projection to the spout projection when the cap projection is at a middle position between a contact start position to the spout projection and a contact complete position to the spout projection during which the cap rotates in the closing rotation direction to close the spout, and 
 a length of the third section in a cap rotation direction is longer than a length of the fourth section in the cap rotation direction. 
 
 
     
     
         9 . The spout unit according to  claim 8 , wherein 
       the cap projection and the spout projection have configuration A, 
       the cap projection further includes a fifth section, 
       the second section, the fifth section, and the first section are arranged in this order in the closing rotation direction, and 
       when the cap projection is observed in a direction orthogonal to the first direction and the closing rotation direction, an outer edge of the cap projection in the fifth section is parallel to the closing rotation direction. 
     
     
         10 . The spout unit according to  claim 9 , wherein 
       when the spout projection is observed in a direction orthogonal to the first direction and the closing rotation direction, the spout projection has two sides extending in the closing rotation direction and two sides extending in the first direction, and 
       in the spout projection, two angles formed by the first direction and the cap rotation direction have a beveled shape. 
     
     
         11 . The spout unit according to  claim 8 , wherein 
       the cap projection and the spout projection have configuration B, 
       the spout projection further includes a sixth section, 
       the third section, the sixth section, and the fourth section are arranged in this order in the closing rotation direction, and 
       when the spout projection is observed in a direction orthogonal to the second direction and the closing rotation direction, an outer edge of the spout projection in the sixth section is parallel to the closing rotation direction. 
     
     
         12 . The spout unit according to  claim 11 , wherein 
       when the cap projection is observed in the direction orthogonal to the second direction and the closing rotation direction, the cap projection has two sides extending in the closing rotation direction and two sides extending in the second direction, and 
       in the cap projection, two angles formed by the second direction and the cap rotation direction have a beveled shape. 
     
     
         13 . A package comprising the spout unit according to  claim 8 , and the package main body. 
     
     
         14 . A contents-filled package comprising the package according to  claim 13 , and contents accommodated in the package main body.