JP4666471B2 - Pouring cap - Google Patents

Description

  The present invention relates to a dispensing cap.

  For example, in a cap used for containers for dressing, soy sauce, etc., the cap body and each rear part of the lid body are hingedly connected, and a plug cylinder with a pullable plug plate is provided in the cap body. A configuration in which the contents can be taken out by removing the plate is widely known.

    In this type of cap, after opening the plug, for example, if the container is shaken or the container is stored sideways to stir the contents liquid, the contents liquid adheres to the back of the lid, and this adhering liquid If the container is tilted after the cap is opened, it may spill out of the cap body from the back side of the lid, and the cap and the surrounding area may be crushed.

    In order to solve this problem, in the cap having the above-described basic configuration, a plurality of pieces of liquid in the radial direction are formed on the inner surface of the fitting cylinder that hangs down from the back surface of the top wall of the lid body so as to be fitted into the plug cylinder. It is known that after the stirring is stopped or after the container is returned to the upright posture, the container is quickly returned to the container body through the liquid piece (Patent Document 1).

  However, in this configuration, if the lid is opened immediately after the stirring operation or the like, a sufficient time for returning the liquid from the lid to the container side cannot be obtained, and the above problems cannot be solved sufficiently.

On the other hand, as shown in FIG. 6, on the inner side of the rear wall of the fitting tube 101, a plurality of liquid retaining pieces 102 parallel to the front-rear direction have gaps between which the liquid contents can be attached between the opposing surfaces. In addition, it is also proposed to hang downward from the fitting cylinder 101 (Patent Document 2). According to this configuration, when the lid body 100 is opened and the container body is tilted forward, the liquid attached to the back surface of the lid body portion in the fitting tube flows downward and is held between the liquid retaining pieces. So liquid does not spill. Then, when the lid is closed after pouring out the liquid, the liquid held between the liquid retaining pieces by the impact of snapping at the time of closing the lid drops from the tip of each liquid retaining piece, or The tip comes into contact with a part of the cap body, and the liquid flows down through the contact portion.
Utility model registration No. 3103088 JP 2001-106251 A

  However, the thing of patent document 2 is a structure which hold | maintains a liquid only by the opposing surface of an adjacent liquid retaining piece, For example, in the half open state of a cover as shown in FIG. 6, the weight of the liquid between the said opposing surfaces Is supported by the adhesive force on both opposing surfaces. Therefore, if the gap between the adjacent liquid retaining pieces is too wide, the liquid in the gap can be held against the centrifugal force and gravity when the lid rotates, and the liquid may scatter around. On the other hand, if the gap is too narrow, the amount of adhering liquid that can be retained will decrease, so depending on the nature of the contents and the size of the cap, the clearance between the retaining pieces may be reduced. It is difficult to take.

  Further, in Patent Document 2, the liquid drops from the liquid retaining piece due to the impact when the lid is closed. However, if the gap between the liquid retaining pieces is set too small, all the liquid in the gap is shaken by the impact. It cannot be dropped. Then, the amount of liquid that can be newly held between the liquid retaining pieces when the stirring operation is performed next decreases, and it becomes difficult to prevent dripping of the liquid that cannot be retained by the liquid retaining pieces.

  Therefore, the present invention provides a cap having a mechanism for temporarily holding the attached liquid on the lid body side, so that the liquid can be reliably held and returned to the container body side so as to be suspended from the back surface of the lid body. A plate-shaped liquid retaining plate having approximately the same vertical width as the length is provided inside the fitting cylinder, and the content liquid is held by adhesion to three surfaces of the two opposing faces of the liquid retaining plate and the inner surface of the fitting cylinder. The object is to provide what can be configured.

The first means is
Each rear part of the cap body and the lid peripheral wall is hingedly connected, and a fitting cylinder suspended from the back of the lid body is provided so as to be liquid-tightly fitted into a plug cylinder supported inside the outer peripheral wall of the cap body. In addition, a plurality of liquid retaining pieces parallel to the front-rear direction are installed on the inner side of the rear wall of the fitting tube with a gap between which the liquid contents can be adhered between the opposing surfaces. In the cap,
The plurality of liquid retaining pieces are flat liquid retaining plates 22 having substantially the same vertical width as the tube length of the fitting cylinder 20, and the rear end portion of the liquid retaining plate in the entire vertical width of these liquid retaining plates By continuing the rear wall of the fitting tube,
The liquid in the gap of the liquid retaining plate is attached to the three surfaces of the opposing surface of the liquid retaining plate 22 and the inner surface of the fitting cylinder 20 over the entire vertical width.
From the rear end of the bottom surface of each liquid retaining plate 22, the liquid introduction rib 24 is suspended downward from the lower end of the fitting cylinder,
The liquid guide ribs 24 suspended from the rear end of the bottom surface of each of the liquid retaining plates 22 are formed in an inverted triangular shape that is shorter than the bottom when viewed from the left and right directions, and the rear slope of the liquid guide ribs 28 is slidably contacted with the upper end portion of the inner surface of the rear wall of the plug cylinder 8 when the cap body is recapped, so that the content liquid is transferred from the back surface portion of the cover body inside the fitting cylinder to the cap body side through the sliding contact portion. It was formed to flow down.
“Liquid retaining plate” temporarily holds the liquid adhering to the back surface of the lid top plate portion in the fitting cylinder in the gap with other neighboring liquid retaining plates or the inner surface of the fitting cylinder. It has a function of flowing down into the plug cylinder. Each liquid retaining plates, respectively from the wall front after fitting tube has projecting parallel to each other forward, and the upper end portion of the liquid retaining plate by connecting the top plate back surface of the lid, the top plate upon opening of the lid The liquid attached to the back surface is provided so as to gather on the rear side of the lid. In addition, when using the terms “front / rear”, “up / down”, “left / right” in this specification, unless otherwise specified, the directions in the lid closed state are indicated. . The liquid retaining plate may be installed in at least the latter half of the lid top plate portion in the fitting cylinder. That is, when the lid of a normal cap is opened, it stops at a position of about 120 degrees centering on the hinge from the closed position, and in this opened state, it adheres to the front half of the lid top plate portion in the fitting cylinder. Since the liquid also flows down to the liquid retaining plate side, the liquid holding function can be sufficiently achieved.

    The “fitting cylinder” has a function of holding the liquid together with the liquid retaining plate, and has a length capable of sufficiently fulfilling the function. In order to ensure a sufficient length of the fitting tube and to smoothly attach and detach the fitting tube to and from the plug tube, it is preferable to cut out the upper part of the rear wall of the plug tube.

    The second means includes the first means, and the tube length of the fitting tube 20 is set to be half or more of the tube length of the peripheral wall of the lid body 14.

    Furthermore, it is desirable that the tube length of the fitting tube 20 be equal to or less than the tube length of the peripheral wall of the lid body 14 in order to smoothly attach and detach the plug tube.

  “Liquid guiding rib” is a member for bridging the liquid adhering to the liquid retaining plate and the fitting cylinder to flow to the plug cylinder, and is provided so as to protrude downward from the lower end surface of the fitting cylinder. . Therefore, it is provided so as to be guided to the upper inner surface of the plug cylinder through the surface of the liquid guiding rib and to flow to the inner surface of the plug cylinder. Note that the base of the above-mentioned “inverted triangle that is shorter than the base” refers to the base of the triangle (the side along the lower surface of the liquid retaining plate).

    The liquid retaining piece of the aforementioned Patent Document 2 is formed at an acute angle at the lower tip as shown in FIG. 6, but the liquid introduction rib of the present application has an angle of the lower end of 60 degrees as a preferred example. It can be set as the above-mentioned short triangle. The liquid retaining piece is configured so that the liquid is dropped from the lower end by an impact at the time of recapping, but in this configuration, the liquid must be shaken off against the surface tension and adhesion of the liquid. On the other hand, the rib for liquid introduction makes the rear end side of the liquid introduction rib contact the plug cylinder fitting cylinder after the lid closing operation, and the lower end of the liquid introduction rib protrudes downward from the fitting cylinder. The liquid naturally flows from the contact point to the plug side.

The third means includes the first means or the second means , and the cap body and the lid are formed of synthetic resin, and the back of the liquid introduction rib 24 is 1 to 3 mm.

In this means, the content liquid is assumed to be oil or the like, and a suitable example of the back of the rib for liquid introduction when the cap is made of synthetic resin is proposed. In this range, about 1.5 mm is particularly good. The reason will be described below. In general, it is preferable that the back of the rib 24 for liquid introduction has the same level as the height of the liquid droplet that can be formed on the surface of the fitting cylinder 20 according to the surface tension. If the liquid between the ribs for liquid introduction is in the vicinity of the inner surface part of the lower end of the fitting cylinder, it is under the influence of the adhesion force from this inner surface part and the surface tension of the liquid, and resists gravity with these forces It is considered possible. The size of a droplet formed when a small amount of liquid is spilled on a material contributes to the surface tension of the liquid and the wettability of the material surface in relation to the liquid. Therefore, the height of the droplet (especially, the upper limit value of the height) can be set as the distance affected by the surface tension of the liquid to determine the spine of the liquid introduction rib. An embodiment in which the cap is made of synthetic resin and the liquid is oil or the like is this means.

According to the invention relating to the first means, the plurality of liquid retaining pieces are formed into a flat liquid retaining plate 22 having substantially the same vertical width as the tube length of the fitting cylinder 20, The content liquid can be further retained by the adhesion force to the three surfaces of the opposing surface and the inner surface of the fitting cylinder 20, and the dripping during the opening and closing operation of the cap can be reliably prevented.
Further, according to the invention relating to the first means, the rear inclined surface 28 of the liquid introduction rib is brought into sliding contact with the upper end of the inner surface of the rear wall of the plug cylinder 8 so that the lid in the fitting cylinder is interposed through the sliding contact portion. Since the content liquid flows down from the back side of the body to the cap body, the liquid can be completely recovered, and the amount that can be retained by the liquid retaining plate each time it is used. It can be returned to the state.

    According to the invention relating to the second means, since the tube length of the fitting tube 20 is more than half of the tube length of the peripheral wall of the lid body 14, the function as a liquid retainer of the fitting tube is more sufficient. can do.

In the invention according to the third means, the back of the rib 24 for liquid introduction has the same height as the height of the droplet that the liquid can form on the surface of the fitting cylinder 20 according to the surface tension. Therefore, it is possible to reliably prevent liquid from spilling from the liquid introduction rib 24 before the cap is recapped.

  First, a conventionally well-known part among the structures of the extraction cap concerning this invention is demonstrated easily.

  The pouring cap is formed by the cap body 2 and the lid body 14, and each rear portion thereof is connected by a hinge 32.

  The cap body 2 has an outer peripheral wall 4 for attachment to the container body neck and neck portion, and a bottomed plug cylinder 8 is continuously provided via an inward flange 6 protruding from the inner surface of the outer peripheral wall. A break line is provided around the center portion of the bottom wall of the plug cylinder, and a pull ring 12 is erected from the plug plate 10 formed by the inner wall portion of the break line.

The lid 14 has a lid peripheral wall 18 suspended from the periphery of the top plate 16 to the upper end of the outer peripheral wall 4 of the cap body, and a fitting tube 20 suspended from the center of the back surface of the top plate 16 into the plug barrel 8. Each is fitted. The lower surface of the fitting cylinder 20 is a horizontal plane.

  In the present invention, as shown in FIG. 1, the fitting cylinder 20 is slightly longer than half of the cylinder length of the cover peripheral wall 18 and is suspended to the vicinity of the upper end of the column of the pull ring 12 in order to ensure a sufficient liquid storage allowance. is doing.

  A plurality of liquid reservoir plates 22 are provided inside the fitting cylinder 20 to hold the content liquid together with the fitting cylinder. In the example shown in the figure, five liquid reservoir plates 22 are provided as shown in FIG. 2, and these liquid reservoir plates 22 are connected to the top plate 16 of the lid body, It extends in parallel from the front. The upper end surfaces of these liquid retaining plates are provided so as to be flush with each other on a virtual vertical surface in the left-right direction. Therefore, the front and rear width of each liquid reservoir plate 22 is set so that the central liquid reservoir plate 22 is the largest as shown in FIG. 2, and becomes shorter toward the left and right sides outward. In addition, the intervals between the liquid reservoir plates 22 are set at an equal interval so that the liquid contained therein is held against the force of gravity by the adhesive force with the opposing surface of the adjacent liquid reservoir plate 22. . Further, each liquid reservoir plate is formed in a rectangular shape whose front end face is inclined from the upper side to the lower rear side as shown in FIG.

  From the rear end of the lower surface of the liquid reservoir plate 22, an inverted triangular liquid introduction rib 24 is attached. As shown in FIG. 1, the liquid introduction rib 24 is a triangle that is slightly shorter than the bottom when viewed from the left-right direction, and the lower apex angle 26 of the triangle is formed to be about 60 degrees. Further, the rear slope 28 of this triangle is inclined at about 45 degrees with respect to the lower surface of the fitting cylinder 20 so that it smoothly continues to the front surface of the rear wall of the plug cylinder 8 when the lid is closed. Is formed.

  The plug cylinder 8 has its upper end expanded outward. In addition, a notch 8a is formed in the upper portion of the front portion of the plug cylinder 8 in order to facilitate attachment / detachment of the fitting cylinder.

  In the above configuration, with the cap attached to the container neck, the lid 14 is rotated in the opening direction from the state shown in FIG. 1, the pull ring 12 is pulled upward, the stopper plate 10 is pulled out, and the liquid is removed. Should be poured out. When the contents are agitated prior to dispensing the liquid, the liquid adheres to the back surface of the top plate portion 16a of the lid 14 inside the fitting cylinder 20, and this liquid is the lid as shown in FIG. In the open state of 14, the back surface of the top plate portion 16a is transferred into the gaps of the liquid reservoir plates 22, and is held by the opposing surface of the adjacent liquid reservoir plates 22 and the inner surface of the fitting cylinder 20.

  When the lid body 14 is rotated in the closing direction from the state shown in FIG. 3, even if the lid body 14 is tilted forward from the vertical position, the liquid in the gap between the adjacent liquid reservoir plates 22 It is held in the gap by the adhesive force between the two opposing surfaces of the liquid reservoir plate 22 and the inner surface of the fitting cylinder 20 and does not drop, for example, outside the plug cylinder 8 during the rotation of the lid.

  Further, as shown in FIG. 4, when the fitting cylinder 20 is inserted into the plug cylinder 8, the rear end of the rear slope 28 of the liquid guiding rib 24 comes into contact with the front surface of the rear wall of the plug cylinder 8, thereby From the gap between the reservoir plates, it flows down to the lower part of the front surface of the rear wall of the plug cylinder 8 and flows down into the container body 40. After that, even when the lid 14 is completely closed, the gap of the liquid reservoir plate 22 continues to flow from the rear wall front surface of the fitting cylinder 20 to the rear wall front surface of the plug cylinder 8 with the liquid introduction rib 24 as a bridge. It continues to flow until the content liquid in the gap of the reservoir plate 22 is almost gone.

  Even if there is no liquid guide rib 24, the liquid flows to some extent from the rear wall of the fitting cylinder 20 to the rear wall of the plug cylinder 8, but when the remaining amount of liquid between the liquid reservoir plates decreases, When the liquid moves from the front surface to the upper surface of the inner surface of the plug cylinder 8 once the liquid flow is interrupted, the attractive force between the front surface of the lower end of the rear wall of the fitting cylinder 20 and the liquid portion in contact with the front surface (Adhesive force) and the surface tension of the liquid act so as to block the flow of the liquid. However, when the liquid introduction rib 24 is suspended from the rear end of the lower surface of the liquid reservoir plate 22 as in the present application, the liquid between the liquid retaining plates 22 is fitted by the adhesive force on the left and right side surfaces of the liquid introduction rib 24. Since it will be guided to a position lower than the lower end surface of the combined cylinder 20, it will be easily transmitted to the inner surface of the plug cylinder 8 adjacent to the lower end surface.

It is a longitudinal cross-sectional view of the cap which concerns on this invention. 1 is a plan view of the cap at the time of molding. 1 is a diagram showing a step of the lid closing operation of the cap. 1 is a diagram showing the next step of the cap closing operation. 1 is a cross-sectional view showing a closed state of the cap. It is operation | movement explanatory drawing of a conventional cap.

Explanation of symbols

2 ... Cap body 4 ... Outer peripheral wall 6 ... Inward flange 8 ... Tube 8a ... Notch
10 ... Plug plate 12 ... Pull ring 14 ... Lid 16 ... Top plate
16a: Top portion of inner side of fitting cylinder 18 ... Peripheral wall of lid 20 ... Fitting cylinder 22 ... Liquid reservoir plate
24 ... Rib for liquid introduction 26 ... Vertical angle 28 ... Back slope 32 ... Hinge 40 ... Container body

Claims (3)

Each rear part of the cap body and the lid peripheral wall is hingedly connected, and a fitting cylinder suspended from the back of the lid body is provided so as to be liquid-tightly fitted into a plug cylinder supported inside the outer peripheral wall of the cap body. In addition, a plurality of liquid retaining pieces parallel to the front-rear direction are installed on the inner side of the rear wall of the fitting tube with a gap between which the liquid contents can be adhered between the opposing surfaces. In the cap,
The plurality of liquid retaining pieces are plate-shaped liquid retaining plates ( 22 ) having substantially the same vertical width as the tube length of the fitting cylinder ( 20 ) , and the liquid retaining plate By continuing the rear end and the rear wall of the fitting cylinder,
The liquid in the gap of the liquid retaining plate is attached to the three surfaces of the liquid retaining plate ( 22 ) and the inner surface of the fitting tube ( 20 ) over the entire vertical width,
From the rear end of the bottom surface of each liquid retaining plate (22), the liquid introduction rib (24) is suspended downward from the lower end of the fitting tube,
The liquid retaining rib (24) suspended from the rear end of the bottom surface of each liquid retaining plate (22) is formed in an inverted triangular shape that is shorter than the bottom when viewed from the left and right direction, and for the liquid guiding. The rear slope of the rib (28) is slidably contacted with the upper end of the inner surface of the rear wall of the plug cylinder (8) when the cap is recapped, and the rear surface of the lid inside the fitting cylinder through the sliding contact portion. A pouring cap formed so that the liquid content flows down from the cap to the cap body .   2. The pouring cap according to claim 1, wherein the tube length of the fitting tube (20) is at least half the tube length of the peripheral wall of the lid (14). The pouring cap according to claim 1 or 2, wherein the cap body and the lid are formed of a synthetic resin and the back of the rib (24) for liquid introduction is set to 1 to 3 mm.

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