CN110291018B - Cover for portable electronic device - Google Patents

Abstract

The invention aims to provide a cap which can inhibit flow loss caused by viscous friction of contents relative to the inner wall surface of a nozzle part, thereby improving the discharging performance of the contents. The cap of the present invention is a cap which is detachably attached to a mouth portion of a container body containing a liquid content having viscosity and discharges the content by pouring, and includes: a fitting portion for fitting to the mouth portion; a nozzle base coaxially disposed inside the fitting portion and having a discharge opening hole in a bottom surface portion; and a spout portion that is provided upright on the bottom surface portion so as to surround at least a part of the discharge opening hole and extends to the opposite side of the container main body, wherein an outflow restricting portion is provided on at least a part of a peripheral edge surrounded by the spout portion in the discharge opening hole inside the spout portion.

Description

Cover for portable electronic device

Technical Field

The present invention relates to a lid.

The present application claims priority based on patent application No. 2017-026852, filed in japan on 16/2/2017, the contents of which are incorporated herein by reference.

Background

A spout cap (cap) attached to a container containing liquid contents such as a softener and a liquid detergent discharges the contents from a poured container body, and is used as a measuring cap for measuring the discharged contents (for example, patent document 1). In such a container, when the content is consumed and the remaining amount is reduced, the container can be used for a long period of time by, for example, appropriately filling the content liquid from the replacement.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-136763

Disclosure of Invention

Problems to be solved by the invention

However, in the conventional structure, when the content is discharged from the container body, the content flows along the inner wall surface of the spout cap. When high-viscosity contents such as liquid detergents flow in the nozzle cap, flow loss occurs due to viscous friction of the contents against the inner wall surface of the nozzle unit, the flow-down speed of the contents decreases, and this tendency becomes remarkable if the viscosity of the contents exceeds 500mPa · s. Therefore, there may be a problem that it is difficult to discharge the contents through the spout cap.

An aspect of the present invention has been made in view of the above-described problems of the related art, and an object of the present invention is to provide a cap capable of suppressing flow loss due to viscous friction of contents against an inner wall surface of a spout cap, and improving the discharge performance of the contents.

Technical scheme for solving problems

In one aspect of the present invention, a cap detachably attached to a mouth portion of a container body containing a content in a viscous liquid state and having a viscosity exceeding 500mPa · s when used, and pouring out the content, includes: a fitting portion for fitting to the mouth portion; a nozzle base coaxially disposed inside the fitting portion and having a discharge opening hole in a bottom surface portion; and a spout portion that is provided upright on the bottom surface portion so as to surround at least a part of the discharge opening hole and extends to the opposite side of the container main body, wherein an outflow restricting portion is provided on at least a part of a peripheral edge surrounded by the spout portion in the discharge opening hole inside the spout portion.

In one embodiment of the cap of the present invention, the following structure may be adopted: the outflow restricting portion is provided on the entire periphery of the discharge opening hole surrounded by the nozzle portion.

In one embodiment of the cap of the present invention, the following structure may be adopted: the outflow regulating portion is provided in a peripheral portion of the discharge opening hole except for at least a peripheral portion which is on a lower side in the tilting.

In one embodiment of the cap of the present invention, the following structure may be adopted: the outflow restricting portion is provided in an area 1/2 of a peripheral edge surrounded by the nozzle portion in the discharge opening hole.

In one aspect of the cap of the present invention, the outflow restricting portion may be provided such that the discharge opening hole is gradually reduced in size in an upper direction when the discharge opening hole is tilted toward the discharge opening hole.

In one aspect of the cap of the present invention, the nozzle portion may have a U-shape that opens to one end side in a radial direction that intersects the axial direction.

Effects of the invention

According to the present invention, it is possible to provide a cap capable of suppressing flow loss due to viscous friction against the content on the inner wall surface of the spout portion, thereby improving the discharge performance of the content.

Drawings

Fig. 1 is a side view showing a structure of a container in which a spout cap (cap) according to a first embodiment is attached to a mouth portion of a container main body and stands upright.

Fig. 2 is a side view showing a structure of a nozzle cap of the first embodiment.

Fig. 3 is a perspective sectional view showing a structure of a nozzle cap according to the first embodiment.

Fig. 4 is a perspective view showing the state of the nozzle cap of the first embodiment viewed from the bottom side.

Fig. 5 is a perspective view showing the nozzle cap of the first embodiment when viewed from the nozzle part side.

Fig. 6 is a partial sectional view showing a structure of a nozzle unit of the nozzle cover of the first embodiment.

Fig. 7 is a plan view of the nozzle cap of the first embodiment as viewed from the axial direction.

Fig. 8 is a plan view of the nozzle cap of the second embodiment as viewed from the axial direction.

Fig. 9 is a plan view of the nozzle cover of the third embodiment as viewed from the axial direction.

Fig. 10 is a plan view of the nozzle cover of the fourth embodiment as viewed from the axial direction.

Fig. 11 is a plan view of a nozzle cap of a conventional structure as viewed from the axial direction.

Fig. 12 is a view showing a case where a container having a spout cover is used.

Description of the reference numerals

29,29A, 29B, 29C, 29D … outflow limiting section; 10 … nozzle cap (lid); 11 … fitting part; 12 … nozzle base; 13 … nozzle part; 22 … bottom face; 23, 23B, 23C, 23D … discharge openings; 23c … peripheral edge portion; 24a … open end; 25 … air displacement holes; 100 … container; 100a … container body; 101 … mouth.

Detailed Description

In order to improve the discharge performance of the contents, the present inventors have focused on the time from when the contents flow out of the container body to when the contents contact the inner wall surface of the spout cap, and studied the shape of the discharge opening hole in the spout cap.

Hereinafter, the structure of the embodiment of the cap according to the present invention will be described in some detail.

[ first embodiment ]

Fig. 1 is a side view showing a structure of a container 100 in which a spout cap (cap) 10 according to the present embodiment is attached to a mouth portion 101 of a container body 100A and is in an upright state. Fig. 2 is a side view showing the structure of the spout cover 10. Fig. 3 is a perspective sectional view showing the structure of the spout cover 10. Fig. 4 is a perspective view showing the mouthpiece cover 10 viewed from the bottom side. Fig. 5 is a perspective view showing the nozzle cover 10 when viewed from the nozzle unit 13 side. Fig. 6 is a partial sectional view showing the structure of the nozzle unit 13 of the nozzle cover 10. Fig. 7 is a plan view of the nozzle cover 10 as viewed from the axial direction.

As shown in fig. 1, the spout cap 10 of the present embodiment is an inner plug cap fitted to a mouth portion 101 formed at an upper end of a container main body 100A for containing contents, and a measuring cap 102 for measuring the contents is attached to an outer side thereof.

The container body 100A is integrally formed by blow molding using an olefin-based synthetic resin such as polyethylene. The container body 100A has a storage space 100A for storing contents such as liquid substances such as liquid detergents, liquid bleaches, liquid softeners, and solvents; granular materials such as granular detergents, granular bleaching agents, and granular seasonings. The mouth 101 of the container body 100A is formed in a cylindrical shape centered on an axis C extending in the vertical direction (Z direction), and opens the storage space 100A upward. A male screw portion (not shown) is formed around the axis C on the outer periphery of the mouth portion 101, and the nozzle cap 10 in the present embodiment is screwed.

The structure of the screw-connection type spout cover 10 is described in the present embodiment, but is not limited thereto. For example, the container body may be inserted and fitted into the mouth 101 of the container body 100A so as not to be removed upward by press-fitting, undercut, or other engagement.

In the following description, a direction along the axis C is referred to as an axial direction, a direction perpendicular to the axis C is referred to as a radial direction, and an axial direction around the axis C is referred to as a circumferential direction, as appropriate. In the nozzle cap 10, the side of the metering cap 102 in the axial direction is referred to as "upper side" and the side of the container body 100A is referred to as "lower side" as appropriate. In fig. 1, the axial direction is appropriately set to the Z direction, the radial direction is set to the X direction, and a direction orthogonal to the Z direction and the X direction (a direction orthogonal to the paper surface in fig. 1) is set to the Y direction.

As shown in fig. 2, the spout cover 10 is formed by extrusion molding using an olefin-based synthetic resin such as polypropylene. The nozzle cap 10 mainly includes a fitting portion 11, a nozzle base 12, and a nozzle unit 13, and is configured to be centered on an axis C.

The fitting portion 11 is cylindrical and is fitted to the outside of the mouth portion 101 of the container main body 100A shown in fig. 1. The fitting portion 11 has: an annular convex portion 14 having a maximum cap diameter on the lower end side of the nozzle cap 10, an intermediate portion 15 continuous with the upper end of the annular convex portion 14 along the axis C and located radially inward of the annular convex portion 14, and an upper portion 16 continuous with the end of the intermediate portion 15 opposite to the annular convex portion 14 and located radially inward of the intermediate portion 15. An external thread portion 17 that is screwed into an internal thread portion of the metering cap 102 is formed around the axis C of the upper portion 16. The nozzle cap 10 of the present embodiment is formed in a shape in which the annular convex portion 14 is gradually expanded radially outward from the upper portion 16 toward the intermediate portion 15 along the axis C.

As shown in fig. 1, the metering cap 102 is attached to the spout cap 10. As shown in fig. 2, the metering cap 102 is fitted into the step portion 19 between the upper portion 16 and the intermediate portion 15 from the outside of the upper portion 16. Namely, the structure is as follows: in a state where the metering cap 102 is attached to the spout cap 10, the outer shape is continuous from the metering cap 102 to the spout cap 10.

In addition, the fitting portion 11 is formed with a female screw portion 20 around the axis C along the inner peripheral surface 11b, and is configured to be screwed with a male screw portion (not shown) formed outside the mouth portion 101 of the container body 100A shown in fig. 1.

As shown in fig. 2 and 3, nozzle base 12 is coaxially provided inside fitting part 11, and is inserted into mouth 101 of container body 100A when the cap is attached. As shown in fig. 2 to 4, the nozzle base 12 has a bottomed cylindrical shape having an inner cylindrical portion 21 and a bottom surface portion 22 provided on the lower end side of the inner cylindrical portion 21, and a discharge opening 23 (fig. 4) is formed in the bottom surface portion 22.

As shown in fig. 3, the inner tube portion 21 is located radially inward (on the axis C side) of the upper portion 16 of the fitting portion 11, and projects outward of the annular protrusion 14 (container body 100A) along the lower end side of the axis C.

As shown in fig. 3, the bottom surface portion 22 has a V-shape protruding toward the container body 100A, and as shown in fig. 4, the bottom surface portion 22 includes: the first inclined surface 22A and the second inclined surface 22B inclined at different angles from each other, and the third inclined surface 22D and the fourth inclined surface 22E opposed to each other on the extension of the connecting top portions 22C,22C of the first inclined surface 22A and the second inclined surface 22B, wherein the thickness thereof gradually decreases toward the connecting top portions 22C,22C at the lowermost end. The discharge opening 23 is formed from the first inclined surface 22A to the second inclined surface 22B of the bottom surface portion 22.

Spout portion 13 is provided upright on bottom surface portion 22 of nozzle base 12, and extends along axis C toward the side opposite to container main body 100A. Specifically, the nozzle unit 13 is erected on the first inclined surface 22A of the bottom surface portion 22, and includes a groove portion 24 and a pair of receiving portions 26 and 26.

The groove-shaped portion 24 extends so as to rise upward (+ Z direction) from the peripheral edge of the discharge opening hole 23, and the diameter of the flow path of the nozzle flow path 18 formed inside is substantially constant in the extending direction (Z direction).

As shown in fig. 7, the groove-like portion 24 is provided so as to surround a part of the peripheral edge of the discharge opening hole 23 when viewed from the axial direction. As shown in fig. 7, the groove portion 24 has a U-shaped cross section opening to the + X side, and the + X side opening ends 24a and 24a extend in the X direction without extending along the peripheral edge of the discharge opening hole 23.

The discharge opening 23 of the present embodiment is, for example, in the form of a drop. The groove 24 is provided along the circular arc-shaped peripheral edge so as to surround a part of the first opening 23a1 formed on the first inclined surface 22A in the discharge opening hole 23. The second opening 23B1 formed on the second inclined surface 22B in the discharge opening hole 23 protrudes radially outward beyond the + X-side opening end 24a of the groove 24, and is open without being surrounded by the groove 24.

As described above, the discharge opening 23 is formed from the first inclined surface 22A to the second inclined surface 22B of the bottom surface portion 22. The second inclined surface 22B, which is the upper side in the tilting, is inclined so as to be turned back with respect to the first inclined surface 22A on which the spout portion 13 is erected, and therefore, the contents are less likely to pass the second inclined surface 22B side in the discharge. Therefore, the opening state of the portion formed on the second inclined surface 22B of the discharge opening hole 23 is easily maintained, and a portion thereof can function as the air replacement hole 25.

Inside the groove-like portion 24, outflow regulating portions 29 each formed of a part of the first inclined surface 22A of the bottom surface portion 22 are provided. The outflow regulating portions 29 are provided on the open ends 24a,24a side of the groove portion 24, respectively. The outflow restricting portion 29 is configured such that a part of the peripheral edge of the discharge opening 23 is spaced apart from the inner wall surface 24b of the groove portion 24. The outflow regulating portions 29,29 are enlarged in a direction approaching each other as they go to the + X side of the discharge opening 23, and have peripheral edge portions 23b,23b inclined linearly with respect to the X direction in the peripheral edge 23a constituting the discharge opening 23. The outflow restricting portions 29 reduce the size of a portion of the discharge opening 23 on the + X side (the side opposite to the top q of the groove 24 in the X direction).

For example, the discharge opening 23 is formed in a drop shape, and a part of the + X side, which is the upper side in the tilting, is reduced in size from the lower side by the outflow regulating portion 29. As shown in fig. 7, a part of the discharge opening hole 23 protrudes outward in the radial direction (+ X side) toward the opening end 24a of the groove portion 24, and is opened without being surrounded by the groove portion 24.

As shown in fig. 5 and 6, a pair of receiving portions 26,26 extending in the axial direction along the groove portion 24 and curved along the outer shape of the groove portion 24 are provided on both outer sides of the groove portion 24.

As shown in fig. 6, the pair of receiving portions 26,26 has a second portion 26B exposed to the outside of the fitting portion 11 with respect to the first portion 26A hidden inside the fitting portion 11, and is extremely thin and tapered toward the tip end (+ Z side) of the groove portion 24 when viewed from the side. As shown in fig. 7, the pair of receiving portions 26,26 are curved so as to expand radially outward from the top q on the-X side of the nozzle unit 13 toward the + X side when viewed from the axial direction, and are spaced apart from the nozzle unit 13 so as to form a space for receiving the content liquid leaking between the nozzle unit 13 and the receiving portions. As shown in fig. 7, the opening end 26A on the + X side in the first portion 26A of the receiving portion 26 is positioned on the-X side with respect to the opening end 24a of the groove portion 24.

The nozzle cap 10 of the present embodiment as described above is attached to the container body 100A by inserting the bottom portion side of the nozzle base 12 into the housing space 100A from the mouth portion 101 of the container body 100A as shown in fig. 1, and fastening the female screw portion 20 of the fitting portion 11 to the male screw portion (not shown) on the container body 100A side while screwing. The metering cap 102 is attached to the spout cap 10 attached to the container body 100A by screwing and fastening a female screw portion (not shown) of the metering cap 102 to the male screw portion 17 of the fitting portion 11.

When the contents are discharged from the container body 100A, the metering cap 102 is rotated in the opposite direction to the fastening, the threaded connection between the female screw portion (not shown) of the metering cap 102 and the male screw portion 17 of the spout cap 10 is released, and the metering cap 102 is removed from the spout cap 10. In a state where the metering cap 102 is removed, the container body 100A is held so that the opening side of the nozzle portion 13 of the nozzle cap 10 faces upward, and then, as shown in fig. 12, the nozzle portion 13 is inclined so as to be positioned downward, whereby the content stored in the container body 100A can be discharged from the nozzle portion 13 to the metering cap 102 and metered.

Even if the container body 100A is to be returned again when the pouring amount is too large, the content liquid leaking outside the groove-like portion 24 without entering the discharge opening 23 is received by the pair of receiving portions 26,26 on both sides. The content liquid received by each receiving portion 26 is guided to the tip side along the second portion 26B at the time of pouring, and then discharged at the time of metering.

When the contents are replaced in the container body 100A, the metering cap 102 is rotated in the opposite direction to the fastening, the threaded connection between the female screw portion (not shown) of the metering cap 102 and the male screw portion 17 of the spout cap 10 is released, and the metering cap 102 is removed from the spout cap 10. In a state where the metering cap 102 is removed, the contents are exchanged from the exchange container to the container main body 100A through the nozzle unit 13 of the nozzle cap 10.

Here, in the conventional structure shown in fig. 11, the discharge opening 23 is not provided with the outflow regulating portion 29 as in the present invention, but the nozzle portion 13 is provided so as to stand along the peripheral edge of the discharge opening 202, and substantially the entire inner wall surface 24b of the groove portion 24 coincides with the peripheral edge of the discharge opening 202. Therefore, immediately after the contents pass through the discharge opening 202, the contents flow along the inner wall surface 24b of the groove portion 24, and the higher the viscosity of the contents, the more the contents flow through the spout channel 18, the more the contents are subjected to viscous friction against the inner wall surface 24b of the groove portion 24, thereby causing flow loss, and the lower the flow rate of the contents. Therefore, there may be a case where it is difficult to discharge the contents through the spout cap 10

In the content flowing through the nozzle flow path 18 of the groove-shaped portion 24, the central portion that does not contact the inner wall surface 24b is not affected by viscous friction with respect to the inner wall surface 24b, and therefore the flow velocity is higher than that of the peripheral portion that contacts the inner wall surface 24 b. That is, the velocity distribution of the flow of the content in the groove portion 24 is as follows: the speed is slowest on the inner wall surface 24b side, and gradually increases with distance from the inner wall surface 24b, and the speed is fastest at the center portion of the nozzle flow path 18. That is, the larger the amount of non-contact with the inner wall surface 24b of the groove portion 24, the more the influence of viscous friction can be reduced, and the flow-down speed of the content can be increased.

Therefore, in the present embodiment, the pair of outflow regulating portions 29 are provided in a part of the region surrounded by the groove portion 24 of the mouthpiece portion 13 in the discharge opening hole 23 in the mouthpiece cover 10, and at least a part of the discharge opening hole 23 is spaced apart from the inner wall surface 24b of the groove portion 24. When the viscosity of the content such as a liquid detergent is high, and particularly when the viscosity of the content during use exceeds 500mPa · s, the content flows out in a state where the discharge opening 23 remains immediately after passing through the discharge opening 23.

Therefore, the outflow restricting portions 29 are configured such that the peripheral edge of the discharge opening 23 is spaced apart from the inner wall surface 24b of the groove portion 24, and therefore, the content passing through the discharge opening 23 during use flows out immediately after passing through the space between the pair of outflow restricting portions 29 without contacting the inner wall surface 24b of the groove portion 24, thereby delaying the time required for contact with the inner wall surface 24b of the groove portion 24.

In particular, the content flowing on the open side of the groove-shaped portion 24 is less susceptible to viscous friction with the inner wall surface 24 b. Therefore, by providing the outflow regulating portion 29, the time point at which the content flowing through the open side of the groove portion 24 comes into contact with the inner wall surface 24b of the groove portion 24 is delayed at least, and the flow rate of the entire content flowing through the nozzle flow path 18 can be increased. Therefore, the discharge efficiency of the content can be improved.

In the present embodiment, the shape of the discharge opening 23 in which the outflow limiting section 29 is provided is described as an example, but the shapes, sizes, and the like of the outflow limiting section 29 and the discharge opening 23 may be changed as appropriate.

In the present embodiment, a part of the discharge opening hole 23 functions as the air replacement hole 25, but the present invention is not limited thereto. For example, the air replacement hole 25 and the discharge opening hole 23 may be provided separately. In this case, by separately forming the air replacement holes 25 other than the discharge opening holes 23 at a position above the discharge opening holes 23 (for example, the second inclined surface 22B of the bottom surface portion 22) during the pouring, air replacement can be smoothly performed in the air replacement holes 25, and the contents can be efficiently discharged from the discharge opening holes 23.

[ second embodiment ]

The structure of the nozzle cover 27 according to the second embodiment of the present invention will be described below.

The basic structure of a nozzle cap 27 of the present embodiment, which is described below, is basically the same as that of the first embodiment, but differs therefrom in that: the first outflow limiting portion 29A of the present embodiment is provided on the entire periphery of the discharge opening hole 23B surrounded by the groove portion 24. Therefore, in the following description, points different from the above-described embodiment will be described in detail, and common points will not be described. In the drawings for explanation, the same reference numerals are given to the same components as those in fig. 1 to 7.

Fig. 8 is a plan view of the nozzle cover 27 of the second embodiment as viewed from the axial direction.

As shown in fig. 8, the nozzle cover 27 is configured such that, in the discharge opening hole 23B provided inside the groove portion 24, the content mainly flows out from the first opening 28 surrounded by the groove portion 24, and a portion located radially outward (on the + X side) of the opening ends 24a,24a of the groove portion 24 mainly functions as the air replacement hole 25.

The air replacement hole 25 has an opening width gradually smaller than the discharge opening hole 23B in a direction toward an upper side in the tilting by the second outflow limiting portions 29B provided on both sides in the Y direction.

The nozzle cap 27 of the present embodiment is configured such that the first outflow limiting portion 29A is provided in the discharge opening hole 23B along the entire periphery surrounded by the groove portion 24. That is, the first outflow limiting portion 29A is formed over the entire inner wall surface 24b of the groove portion 24. The first outflow limiting portion 29A is present between the inner wall surface 24b of the groove portion 24 and the first opening 28, and the peripheral edge of the first opening 28 is spaced apart from the inner wall surface 24b of the groove portion 24.

The first outflow limiting portion 29A is provided with a substantially uniform width W along the peripheral edge of the first opening 28 of the discharge opening hole 23B. The width W of the first outflow limiting portion 29A is appropriately set according to the viscosity of the contents and the like. The width W of the first outflow limiting portion 29A may not be fixed in the peripheral range of the first opening 28, and the width dimension may partially vary.

According to the configuration of the present embodiment, the first outflow limiting portion 29A is provided along the inner wall surface 24B of the groove portion 24, so that the first opening 28 can be formed in the discharge opening hole 23B so as to be apart from the inner wall surface 24B of the groove portion 24, and the time from the discharge of the content from the discharge opening hole 23B to the contact with the inner wall surface 24B of the groove portion 24 can be delayed as compared with the configuration of the first embodiment.

According to the spout cap 27 of the present embodiment, the first outflow limiting portion 29A further delays the time point at which substantially the entire content passing through the discharge opening 23 can be brought into contact with the inner wall surface 24b of the groove portion 24. This can further increase the flow rate of the content flowing through the nozzle flow path 18, thereby improving the discharge efficiency of the content.

[ third embodiment ]

Next, the structure of the nozzle cover 30 according to the third embodiment of the present invention will be described.

The basic structure of a nozzle cap 30 of the present embodiment shown below is basically the same as that of the second embodiment described above, but differs therefrom in that: the pair of outflow regulating portions 29C are formed on both sides of the discharge opening 23C in the Y direction, except for the region on the lower side when tilted, in the peripheral edge of the discharge opening 23C surrounded by the groove portion 24. Therefore, in the following description, points different from the above-described embodiment will be described in detail, and common points will not be described. In the drawings for explanation, the same reference numerals are given to the components common to fig. 8.

Fig. 9 is a plan view of the nozzle cover 30 of the third embodiment as viewed from the axial direction.

As shown in fig. 9, the nozzle cover 30 of the present embodiment is provided with a pair of outflow regulating portions 29C,29C along peripheral edge portions 23d,23d of the discharge opening hole 23C surrounded by the groove portion 24 of the nozzle portion 13 except for the peripheral edge portion 23C on the top q side of the groove portion 24. The peripheral edge portion 23C of the discharge opening 23C coincides with the inner wall surface 24b of the groove portion 24.

In the nozzle cap 30 of the present embodiment, the outflow regulating portion 29C is provided on the periphery of the discharge opening 23C except for the peripheral edge portion 23C on the top q side of the groove 24. By providing the outflow regulating portion 29C in addition to the peripheral edge portion 23C on the lower side in the pouring, the contents do not have to pass over the outflow regulating portion 29C when passing through the discharge opening 23, and the pouring angle of the container main body 100A does not rise in the time of use, and the time for the contents to reach the nozzle flow path 18 of the groove portion 24 from the discharge opening 23 can be shortened. The content passing through the peripheral edge portion 23c of the discharge opening hole 23 flows down in the inclined nozzle flow path 18 by its gravity.

On the other hand, the peripheral edge portions 23d,23d of the discharge opening hole 23, that is, the content between the outflow regulating portions 29C, are inhibited from expanding near the inlet of the nozzle flow path 18 by the outflow regulating portions 29C, and the time point of contact with the inner wall surface 24b of the groove portion 24 can be delayed.

As described above, in the structure of the present embodiment, the angle at which the container main body 100A is inclined when in use can be suppressed from increasing, and the outflow property of the content flowing down by gravity can be improved. At the same time, the influence of viscous friction of the content on the downstream inner wall surface 24b can be reduced, and the flow loss can be suppressed, whereby the flow rate of the entire content can be increased.

[ fourth embodiment ]

Next, the structure of the nozzle cover 40 according to the fourth embodiment of the present invention will be described.

The basic structure of a nozzle cap 40 of the present embodiment shown below is basically the same as that of the third embodiment described above, but the present embodiment differs therefrom in that: the outflow limiting portion 29D is provided only in the 1/2 region in the peripheral edge of the discharge opening hole 23D surrounded by the groove portion 24. Therefore, in the following description, points different from the above-described embodiment will be described in detail, and common points will not be described. In the drawings for explanation, the same reference numerals are given to the components common to fig. 9.

Fig. 10 is a plan view of the nozzle cover 40 of the fourth embodiment as viewed from the axial direction.

As shown in fig. 10, in the nozzle cover 40 of the present embodiment, a pair of outflow regulating portions 29D,29D are formed in the peripheral edge portion 23f,23f of the discharge opening 23D surrounded by the groove portion 24 except for the peripheral edge portion 23c on the top q side of the groove portion 24 and the peripheral edge portions 23e,23e on both sides thereof.

The outflow limiting portion 29D is provided only in a region of about 1/2 of the portion surrounded by the groove portion 24 in the discharge opening hole 23D, which is here the peripheral edge portions 23f,23f of the upper half (+ X side) in the paper surface of fig. 10. Specifically, the outflow limiting portions 29D are formed in the entire predetermined region from the respective open ends 24a of the groove-like portions 24. The formation region of the outflow limiting portion 29D is appropriately set according to the type of the content and the like. In the present embodiment, the end 29D of the outflow limiting portion 29D is located on the-X side of the axis C, but may be located on the + X side.

The outflow regulating portions 29D,29D are enlarged in the direction approaching each other as they go to the + X side of the discharge opening hole 23D, and constitute peripheral edge portions 23f,23f curved with respect to the X direction.

The discharge opening hole 23D is formed of 3 opening regions (air replacement hole 25, first opening 28A, and second opening 28B), and is arranged in the X direction in the order of increasing opening area from the upper side when tilted (opening area of the air replacement hole 25 < opening area of the first opening 28A < opening area of the second opening 28B).

Here, the air replacement hole 25 is an opening of a region formed on the second inclined surface 22B of the bottom surface portion 22 in the discharge opening hole 23D. The first opening 28A is formed in the first inclined surface 22A of the bottom surface portion 22 in the discharge opening hole 23D, and is an opening in a region between the pair of outflow regulating portions 29D, 29D. The second opening 28B is formed in the first inclined surface 22A of the bottom surface portion 22 in the discharge opening hole 23D, and is an opening in a region other than a region between the pair of outflow regulating portions 29D, 29D.

By increasing the opening area of the second opening 28B that is the lowermost position at the time of pouring, a large amount of the content flowing out by its own weight can be discharged. Further, the outflow restricting portions 29D,29D can delay the time point at which the content flowing out of the nozzle flow path 18 from the first opening 28A between the outflow restricting portions 29D, that is, the content flowing on the open side of the groove portion 24 comes into contact with the inner wall surface 24 b. Therefore, the influence of viscous friction with respect to the inner wall surface 24b can be suppressed, the flow-down speed of the content flowing through the nozzle flow path 18 can be increased, and the discharge performance of the content can be improved.

While the preferred embodiments of the present invention have been described above with reference to the drawings, it is needless to say that the present invention is not limited to the examples. It should be understood by those skilled in the art that various modifications and changes can be made within the scope of the technical idea described in the claims, and these modifications and changes naturally fall within the technical scope of the present invention.

For example, the shape of the discharge opening, the range, shape, size, and the like of the outflow regulating portion are not limited to the shapes of the above embodiments, and may be appropriately changed according to the type of the contents.

Industrial applicability

The present invention is applicable to a cap.

Claims (5)

1. A cap which is detachably attached to a mouth portion of a container main body containing a liquid content having viscosity and discharges the content by pouring, comprising:

a fitting portion for fitting to the mouth portion;

a nozzle base coaxially disposed inside the fitting portion and having a discharge opening hole in a bottom surface portion;

a spout portion having a groove portion and a pair of receiving portions, provided upright on the bottom surface portion so as to surround at least a part of the discharge opening hole, and extending toward the opposite side to the container main body,

wherein an outflow regulating portion is provided on at least a part of a peripheral edge surrounded by the nozzle portion in the discharge opening hole inside the nozzle portion;

the bottom surface part is in a V shape protruding towards the container main body side and is provided with a first inclined surface and a second inclined surface which have different inclination angles; a discharge opening hole formed from the first inclined surface to the second inclined surface of the bottom surface portion, and a second opening formed on the second inclined surface of the discharge opening hole protrudes radially outward beyond an upper opening end of the groove portion when the groove portion is tilted;

the outflow restricting portion is provided such that the discharge opening hole is gradually reduced in size in an upper direction when the discharge opening hole is tilted toward the discharge opening hole.

2. The cap according to claim 1, wherein the outflow regulating portion is provided on an entire periphery of the discharge opening hole surrounded by the spout.

3. The cap according to claim 1, wherein the outflow regulating portion is provided on a peripheral edge portion of the discharge opening hole except for at least a peripheral edge portion of the discharge opening hole which is a lower side when the cap is tilted.

4. The cap according to claim 1, wherein the outflow restricting portion is provided in an area of 1/2 of a peripheral edge surrounded by the spout portion in the discharge opening hole.

5. The cap as claimed in any one of claims 1 to 4, wherein the nozzle portion has a U-shape open to one end side in a radial direction intersecting with the axial direction.

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