Cap unit for a beverage container

Abstract

An object of embodiments of the invention is to provide a cap unit having a compact hinge structure having efficient design properties by consolidating functions in a hinge portion, and the present invention provides a cap unit which is configured to be attached to a neck portion of a container main body. The cap unit may include a liquid flow spout provided in an upper portion, and a lid that opens and closes the liquid flow spout in a state of being attached to the cap main body in a freely rotating manner using a hinge portion, in which a first biasing member, which biases the lid toward a rotating direction, and a second biasing member, which biases the lid toward a rotating shaft direction, are provided in the hinge portion.

What is claimed is: 
     
         1 . A cap unit which is configured to attach to a neck portion of a container main body, an upper portion of which is open, in a detachable manner, the cap unit comprising:
 a cap main body that blocks an upper opening of the container main body and in which a liquid flow spout is provided in an upper portion; and   a lid that opens and closes the liquid flow spout in a state of being attached to the cap main body in a freely rotating manner using a hinge portion,   wherein a first biasing member, which biases the lid toward a rotating direction, and a second biasing member, which biases the lid toward a rotating shaft direction, are provided in the hinge portion.   
     
     
         2 . The cap unit according to  claim 1 ,
 wherein the hinge portion comprises a first hinge bearing portion, which is provided on one of the cap main body and the lid, a second hinge bearing portion and a third hinge bearing portion, which are provided on the other of the cap main body and the lid, and a hinge shaft attached in a state of passing through the first, second, and third hinge bearing portions in the rotating shaft direction in a state in which the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion,   wherein the first biasing member is disposed on an inner side of the first hinge bearing portion that faces the second hinge bearing portion, and   wherein the second biasing member is disposed on an inner side of the first hinge bearing portion that faces the third hinge bearing portion.   
     
     
         3 . The cap unit according to  claim 1 ,
 wherein the first biasing member is a torsion spring.   
     
     
         4 . The cap unit according to  claim 1 ,
 wherein the hinge portion comprises a click mechanism that gives a click feeling at a position at which the lid opens the liquid flow spout and maintains an open state of the lid.   
     
     
         5 . The cap unit according to  claim 4 ,
 wherein the click mechanism comprises a sliding member, which is disposed on the inner side of the first hinge bearing portion so as to be capable of freely sliding in a state of being biased by the second biasing member, an engagement concave portion, which is provided on a first surface among surfaces at which the sliding member and the third hinge bearing portion face one another, and an engagement convex portion, which is provided on a second surface among surfaces at which the sliding member and the third hinge bearing portion face one another, and gives a click feeling and maintains an open state of the lid by the engagement convex portion engaging with the engagement concave portion at a position at which the lid opens the liquid flow port.   
     
     
         6 . The cap unit according to  claim 5 ,
 wherein, among the first surface, a surface that comes into contact with the engagement convex portion in the rotating direction is upwardly inclined toward the engagement concave portion.   
     
     
         7 . The cap unit according to  claim 6 ,
 wherein, among the engagement concave portion and the engagement convex portion, surfaces that are engaged with one another in the rotating direction are inclined at the same angle.   
     
     
         8 . The cap unit according to  claim 5 , further comprising:
 one facing surface member that configures a surface that faces the sliding member of the third hinge bearing portion.   
     
     
         9 . The cap unit according to  claim 8 ,
 wherein the one facing surface member is composed of a material that is different from the third hinge bearing portion.   
     
     
         10 . The cap unit according to  claim 2 ,
 wherein the hinge portion comprises a plurality of projecting portions that are provided on a first surface among surfaces at which the first hinge bearing portion and the second hinge bearing portion face one another, and are brought into sliding contact with a second surface.   
     
     
         11 . The cap unit according to  claim 10 , further comprising:
 a second facing surface member that, among surfaces of the second hinge bearing portion, configures a surface that faces the first hinge bearing portion,   wherein the plurality of projecting portions is provided on the second facing surface member.   
     
     
         12 . The cap unit according to  claim 11 ,
 wherein the second facing surface member is composed of a material that is different from the second hinge bearing portion.   
     
     
         13 . The cap unit according to any one of  claim 1 ,
 wherein the second biasing member is a coil spring.   
     
     
         14 . The cap unit according to  claim 1 , further comprising:
 a lid locking mechanism that fixes the lid to the cap main body by resisting biasing of the first biasing member at a position at which the lid blocks the liquid flow port.   
     
     
         15 . A beverage container comprising:
 the cap unit according to any one of  claims 1 ; and   a container main body to which the cap unit is attached.   
     
     
         16 . A cap unit configured to attach to a neck portion of a container main body, an upper portion of which is open, in a detachable manner, the cap unit comprising:
 a cap main body that blocks an upper opening of the container main body and in which a liquid flow spout is provided in an upper portion; and   a lid that opens and closes the liquid flow spout attached to the cap main body in a freely rotating manner using a hinge portion,   wherein the hinge portion comprises a click mechanism that gives a click feeling to the user at a position at which the lid opens the liquid flow spout and maintains an open state of the lid,   wherein the click mechanism comprises a sliding member, which is disposed on the inner side of the first hinge bearing portion so as to be capable of sliding in a state of being biased by a biasing member, an engagement concave portion, which is provided on a first surface among surfaces at which the sliding member and the third hinge bearing portion face one another, and an engagement convex portion, which is provided on a second surface among surfaces at which the sliding member and the third hinge bearing portion face one another, and gives a click feeling and maintains an open state of the lid by the engagement convex portion engaging with the engagement concave portion at a position at which the lid opens the liquid flow port.   
     
     
         17 . The cap unit of  claim 16  further comprising a lid locking mechanism.