JP2007176577A - Pouring cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a variation in unsealing force at the time when a lid is opened at a pouring cap provided with a base having a pouring cylinder and with the lid. <P>SOLUTION: A pouring cap 100 has a base 110 having a lower end 111 installed at an opening part 51 of a receptacle and having an annular member 114 arranged at its upper side, a barrier wall 115 integrally molded with the base 110 and forming a pouring port of a receptacle 51 through its pulling and tearing, a pouring cylinder 116 enclosing the barrier wall 115, integrally connected to the inner side of the annular member 114 so as to guide and feed the stored content to be poured, and a lid member 120 removably engaged with the annular member 114 to store the pouring cylinder 116 in it together with the barrier wall 115. The lid member 120 has, at its rear surface, an annular protrusion 125 contacted with the inner surface of the pouring cylinder 116 under an engaged attitude with the annular member 114 and holding its inner space R1 in a liquid-tight state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pouring cap that holds an inner space of a pouring tube that surrounds the pouring port in a liquid-tight state after forming a pouring port by pulling a barrier from a base.

In order to keep the inner space of the dispensing cylinder in a liquid-tight state after opening the dispensing outlet, the conventional dispensing cap faces the inner surface of the dispensing cylinder on the back surface of the lid body with a locking posture to the annular body. The inner cylinder which contacts is provided integrally. (For example, refer to Patent Document 1).
JP 2000-272648 A

  However, the conventional cap maintains its surface contact with the pouring tube and the inner tube heated, such as by setting the lid immediately after molding, or by washing and sterilizing with a hot water shower after mounting on the container. In some cases, the surface contact portion may be stuck, and the opening force required to open the lid varies from cap to cap.

  The problem to be solved by the present invention is to reduce variation in opening force when opening a lid in a dispensing cap including a base having a dispensing cylinder and a lid that houses the dispensing cylinder.

  The present invention includes a base having a lower end portion fitted to the mouth portion of the container and provided with an annular body on the upper side thereof, a barrier formed integrally with the base and forming a spout for the container from the pull, A pouring cylinder that surrounds the barrier and is integrally connected to the inside of the annular body and guides and guides the contents to be dispensed, and is detachably locked to the annular body and stores the pouring cylinder together with the barrier. And a lid that is in contact with the inner surface of the dispensing cylinder with a locking posture to the annular body on the back side surface thereof to make the inner space liquid-tight. An annular protrusion to be held is provided.

  According to the present invention, the dispensing cylinder is provided with a gas vent passage that forms a very small gap between the annular projection by elastic deformation only when a pressing force is applied to the lid. Is preferred.

  Further, the present invention provides an extremely small amount between the lid and the annular body by elastic deformation only when at least one of the annular body and the lid is loaded with a pressing force on the lid. It is preferable to provide a gas vent passage that forms a simple gap.

  The present invention provides an annular projection on the back side surface of the lid, contacts the inner surface of the dispensing cylinder in a locking posture to the annular body, and holds the inner space in a liquid-tight state. The contact with the outlet tube is not a surface contact but a line contact along the circumferential direction. Therefore, according to the present invention, since the frictional resistance when the lid is opened and the sticking between the lid and the dispensing cylinder are reduced, the opening when opening a different lid for each dispensing cap is performed. The variation in power can be reduced.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  The cap 100 of this embodiment is plugged into the mouth part 51 of the container 50, and the lower end part 111 of the base 110 is integrally connected to the inner cylinder 111a and the outer cylinder 111b, and the container opening between them. The part 51 is clamped by undercut fitting or the like. Further, an outer peripheral wall 112 surrounding the lower end 111 is provided outside the base lower end 111, and the lid 120 is connected to the outer peripheral wall 112 through a hinge H so as to be openable and closable. The lower end portion 111 and the outer peripheral wall 112 are integrally connected to each other by an outer cylinder 111b via a connecting piece 113, and a through hole A is formed between the connecting pieces 113.

  On the other hand, an annular body 114 extending along the circumferential direction is integrally provided on the upper side of the base lower end portion 111. On the outer surface of the annular body 114, there are provided a protrusion 114p and a groove 114n that extend along the circumferential direction and on which the lid 120 is detachably locked.

  A barrier 115 partitioned by a thinning weakening line L that can be broken is integrally formed on the inner surface of the base 110. The barrier 115 is integrally provided with a pull ring 115r. By pulling the pull ring 115r with a finger and pulling the barrier 115 away from the base 110, a spout leading to the inside of the container 50 formed by the locus of the weakening line L is formed. .

  Furthermore, the base 110 includes a dispensing cylinder 116 that surrounds the barrier 115 and is integrally connected to the inside of the annular body 114 between the annular body 114 and the barrier 115. The dispensing cylinder 116 guides and guides the contents in the container 50 to the outside from the dispensing outlet, and in particular, a protruding portion 116a is provided on the side facing the hinge H to increase the dispensing distance of the contents. .

  The lid 120 includes a top wall 121 disposed on the upper side of the dispensing cylinder 116 and an outer peripheral wall 123 that is integrally connected to an edge of the top wall 121. On the inner side of the outer peripheral wall 123, there are provided a protrusion 123p and a groove 123n extending along the circumferential direction. The protrusions 123p and the groove 123n are detachably fitted to the protrusions 114p and the grooves 114n provided on the annular body 114 so as to be detachable. As a result, the lid 120 is detachably locked to the annular body 114 and accommodates the extraction tube 116 together with the barrier 115 therein.

  The lid 120 is integrally provided with an inner cylinder 124 that hangs down integrally from the back side surface of the top wall 121. An annular protrusion 125 extending along the circumferential direction is further provided on the outer surface of the inner cylinder 124. The annular protrusion 125 contacts the inner surface 116f of the dispensing cylinder 116 with a locking posture to the annular body 114 with the lid body 120 closed, and between the top wall 121 and the barrier 115, The inner space R1 defined by the cylinder 124 is held in a liquid-tight state.

  Thereby, the contact between the lid 120 and the dispensing cylinder 116 is not a surface contact but a line contact along the circumferential direction by the top 125p of the annular protrusion 125. Therefore, according to this embodiment, since the increase in frictional resistance when opening the lid 120 and the sticking between the lid and the dispensing cylinder are reduced, when opening different lids 120 for each cap 100, Variations in opening force can be reduced.

  By the way, even if the variation in the opening force can be reduced, after filling the contents in the container 50, when the cap 100 is plugged into the container mouth 51, and washing and high temperature sterilization with hot water or the like, the base 110 It is also conceivable that the internal pressure between the lid 120 and the lid 120 rises and the lid 120 is naturally opened.

  Therefore, in this embodiment, when a pressing force is further applied to the lid 120, the lid 120 is elastically deformed and the inner cylinder 124 is stroked so that it can be restored, and the inner surface 116f of the dispensing cylinder 116 A longitudinal groove 117 is provided on the inner side to form a very small gap C between the annular projection 125 only when a pressing force is applied to the lid 120 and the lid 120 strokes toward the base 110. A gas vent passage for space R1 is used.

  That is, at least the top wall 121 of the lid 120 is made of an elastically deformable synthetic resin, and when the cap 100 is plugged into the container opening 51 on the inner surface 116f of the dispensing cylinder 116, the inner cylinder of the lid 120 A longitudinal groove 117 is provided at a position where the annular projection 125 can be stroked together with 124.

  According to this configuration, the annular space in which the air in the inner space R1 surrounds the inner space R1 from the minute gap C formed between the top 125p of the annular protrusion 125 and the vertical groove 117 when the cap 100 is plugged. Although it escapes instantaneously to R2, after the end of the plugging, the annular protrusion 125 returns to the initial seal position above the longitudinal groove 116 by the restoring force of the top wall 121. As a result, the inner space R1 is in a state close to negative pressure during high temperature sterilization, so that the inner pressure of the inner space R1 does not increase and the lid 120 is not naturally opened.

  Furthermore, in this embodiment, when a pressing force is applied to the lid 120, the outer circumferential wall 123 of the lid is elastically deformed so as to be releasably separated from the base annular body 114, and the lower end 123e of the outer circumferential wall 123 of the lid An annular space that is provided with a lateral groove 126 and forms a very small gap between the lid 120 and the base annular body 114 by elastic deformation of the outer peripheral wall 123 only when a pressing force is applied to the lid 120. A gas vent passage for R2.

  That is, at least the lid outer peripheral wall 123 is made of an elastically deformable synthetic resin, and a lateral groove 126 is provided at the lower end 123e of the lid outer peripheral wall 123 that is aligned with the upper end of the base annular body 114.

  In this case, in a state where the pressing force is not applied to the lid 123, the locking surfaces f1 and f2 form a liquid-tight state between the protrusion 114p of the base annular body 114 and the locking recess 123n of the lid outer peripheral wall 123. However, the outer peripheral wall 123 of the lid body is elastically deformed outward by the pressing force momentarily applied to the lid body 123 when the stopper is plugged, and the locking surface f1 on the base 110 side and the lid body 120 side The engagement surface f2 is separated from each other, and a very small gap C is formed between the protrusion 114p of the base annular body 114 and the engagement recess 123n of the lid outer peripheral wall 123.

  As a result, the air in the annular space R2 escapes instantaneously from the gap C through the lateral groove 126 to the through hole A, but after the stoppering, the protrusion 123p of the outer peripheral wall 123 is brought into close contact with the locking recess 112n by its restoring force. . Therefore, even when the temperature of the cap 100 rises during high temperature sterilization or the like, since the inside of the annular space R2 is close to negative pressure, the internal pressure of the annular space R2 rises and the lid 120 is naturally opened. It will never be done. In this embodiment, four lateral grooves 126 (see FIG. 2) are exemplarily provided, but this may be at least one.

  Moreover, about the degassing channel | path for inner space R1, the form as shown to FIGS. 5-7 is also possible as a 2nd form of this invention. In the description of this embodiment, the configuration other than the gas vent passage is the same as that of the first embodiment, and the description thereof is omitted.

  In this embodiment, when a pressing force is applied to the lid body 120, the lid body 120 is elastically deformed and the inner cylinder 124 is stroked so that it can be restored. A degassing passage which is provided with a rib 118 and forms a very small gap C between the annular projection 125 only when a pressing force is applied to the lid 120 and the lid 120 strokes toward the base 110 And

  That is, at least the top wall 121 of the lid 120 is made of an elastically deformable synthetic resin, and when the cap 100 is plugged into the container opening 51 on the inner surface 116f of the dispensing cylinder 116, the inner cylinder of the lid 120 Two vertical ribs 118 are provided at positions where the annular protrusion 125 can be stroked together with 124.

  According to this configuration, when the cap 100 is plugged, the air in the inner space R1 surrounds the inner space R1 from a very small gap C formed between the top 125p of the annular protrusion 125 and the two vertical ribs 118. Although it escapes to the annular space R2 instantaneously, the annular protrusion 125 returns to the initial sealing position above the vertical rib 118 by the restoring force of the top wall 121 after the stoppering. As a result, the inner space R1 is in a state close to negative pressure during high temperature sterilization, so that the inner pressure of the inner space R1 does not increase and the lid 120 is not naturally opened. In this case as well, the vertical ribs 118 may be provided at least at one place. The structure of the vertical ribs 118 is preferably two vertical ribs, but may be a single rib.

  Further, the gas vent passage in the annular space R2 can be configured as shown in FIG. In the description of this embodiment, the configuration other than the gas vent passage is the same as that of the first embodiment, and the description thereof is omitted.

  This embodiment is a modification of the first embodiment. When a pressing force is applied to the lid body 120, the outer peripheral wall 123 of the lid body 120 is elastically deformed so as to be releasably separated from the annular body 112 of the base 110. In addition, a lateral groove 119 is provided at the upper end 114e of the base annular body 114, and the lid body 120 and the base annular body 114 are mutually deformed by elastic deformation of the outer peripheral wall 123 only when a pressing force is applied to the lid body 120. A gas vent passage that forms a very small gap C therebetween is provided.

  That is, at least the outer peripheral wall 123 of the lid body is made of an elastically deformable synthetic resin, and the lateral groove 118 is provided on the upper end 114e of the base annular body 114 that is aligned with the lower end of the outer peripheral wall 123 of the lid body.

  Also in this case, when the cap 100 is plugged, the outer peripheral wall 123 of the lid body is elastically deformed outward to form a very small gap C between the protrusion 114p and the locking recess 123n, and the air in the annular space R2 is Although it escapes instantaneously from the gap C through the lateral groove 119, the protrusion 123p of the outer peripheral wall 123 comes into close contact with the locking recess 114n by its restoring force after the stoppering. Therefore, as in the first embodiment, even when the temperature of the cap 100 rises, the internal pressure of the annular space R2 does not rise and the lid 120 is not naturally opened.

  The above description is a preferred form of the present invention, but the present invention can be modified in various ways within the scope of the claims. For example, the inner cylinder 124 according to the present invention may have any shape that can partition the inner space R1, such as a solid cylindrical shape. The base and the lid may be directly attached without using a hinge. Various modifications can also be made to the fitting method when the base is attached to the mouth. Furthermore, the cap is not limited to the stopper cap, and may be a screw cap or the like. Moreover, each form can combine each component suitably, respectively.

  The pouring cap of the present invention is not limited to a heat-resistant pouring cap, but can also be applied to a pouring cap used at room temperature.

It is a longitudinal section showing a hinge cap which is the first form of the present invention. It is a top view which shows the hinge cap of the same form in the state which opened the cover body. (a) and (b) show the relationship between the dispensing cylinder and the annular projection in the same form in the state X in FIG. 1 where no pressing force is applied to the lid and the pressing force is applied to the lid. It is principal part sectional drawing shown by the state of being done. (a) and (b) show the relationship between the lid outer peripheral wall and the base annular body in the same form in the region Y in FIG. 1 and the state in which no pressure is applied to the lid, It is principal part sectional drawing shown with the state of the moment when loaded. (a), (b) is a longitudinal sectional view showing the second embodiment of the present invention in a state where the pressing force is not applied to the lid and a state at the moment when the pressing force is applied to the lid, respectively. is there. (a), (b) is the principal part sectional view which shows the state where the pressing force is not loaded to the cover body in the region X of FIG. It is ZZ sectional drawing. (a), (b) is a cross-sectional view of the main part showing the relationship between the dispensing cylinder and the annular protrusion in the same form in the region X of FIG. 5 at the moment when the pressing force is applied to the lid, It is the ZZ sectional view. (a), (b) shows the relationship between the lid outer peripheral wall and the base annular body in the second embodiment of the present invention in the state Y in FIG. It is principal part sectional drawing shown by the state in the moment when pressing force was loaded on.

Explanation of symbols

100 cap
110 base
111 Bottom edge
111a Inner cylinder at the bottom
111b Bottom cylinder
112 Base wall
113 connecting pieces
114 toroid
114p ridge
114n groove
115 barriers
116 Pipe
117 Vertical groove (gas vent passage for inner space R1)
118 Vertical rib (gas vent passage for inner space R1)
119 Horizontal groove (gas vent passage for annular space R2)
120 lid
121 sky wall
123 Lid outer wall
123p
123n groove
124 inner cylinder
125 annular projection
126 Horizontal groove (gas vent passage for annular space R2)

Claims (3)

A base having a lower end portion attached to the mouth portion of the container and having an annular body provided on the upper side thereof, a barrier formed integrally with the base and forming a spout of the container from the pull, and surrounding the barrier A pouring cylinder that is integrally connected to the inside of the annular body and guides and guides contents to be dispensed, and a lid body that is detachably locked to the annular body and accommodates the pouring cylinder together with a barrier. A pouring cap provided,
The lid is provided with an annular protrusion on the back side surface thereof, which has an annular protrusion that holds the inner space in a liquid-tight state by contacting the inner surface of the extraction cylinder in a locking posture to the annular body. .   2. The gas according to claim 1, wherein a pressure is applied to the lid and the micro-gap is formed between the annular projection and the annular protrusion only when the lid is stroked toward the base. A pouring cap characterized by providing an extraction passage.   3. The method according to claim 1, wherein at least one of the annular body and the lid body is finely deformed between the lid body and the annular body by elastic deformation only when a pressing force is applied to the lid body. A pouring cap characterized by providing a gas vent passage that forms a small gap.

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