JP2731821B2 - Synthetic resin container lid with drainage control function - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a container lid applied to a container containing a liquid,
More specifically, the present invention relates to a synthetic resin container lid having a drainage amount regulating function of regulating a flow rate of a discharged liquid to a required range.

(Prior art)

Conventionally, as a container lid for a container containing a liquid such as a liquid seasoning such as vinegar or soy sauce, a synthetic resin having a body attached to the mouth and neck of the container and having a drainage cylinder following the mouth and neck of the container Container lids are widely used in practice. The liquid contained in the container is discharged from the neck and neck of the container through the drainage tube.

Japanese Utility Model Laid-Open Publication No. 63-34049 discloses that a turning opening plate (oscillating plate) is provided on the inner peripheral surface of the above-mentioned drainage cylinder via a single connecting piece. When the liquid is drained,
The swiveling opening plate is swung upward from the normal position that closes the drainage cylinder around the connection piece.

[Problems of the prior art]

Therefore, it is desired that liquids such as liquid seasonings are discharged in appropriate amounts without being discharged in large quantities at one time. Therefore, the amount of liquid discharged through the drainage cylinder of the container lid is required. It is desired to regulate to a range.

However, the conventional container lid cannot satisfy such demands. For example, when the container is tilted rapidly to discharge the liquid, there is a risk that excessive liquid may be discharged rapidly.

According to the Japanese Unexamined Utility Model Publication No. 63-34049, the swiveling opening moving plate exerts some restricting action on the liquid discharged through the drainage cylinder, but such restricting action is not always required. It is not sufficient, and the amount of liquid to be discharged cannot be regulated sufficiently to a required range.

[Technical problem of the invention]

The present invention has been made in view of the above-mentioned facts, and a main technical problem of the present invention is that the amount of liquid discharged through a liquid discharge cylinder can be regulated to a required range sufficiently and stably. It is to provide an improved container lid.

[Solution of the Invention]

According to the present invention, there is provided a main body which is attached to the mouth and neck portion of a container and has a drainage cylinder portion following the mouth and neck portion, and a turning opening plate provided in the drainage tube portion, wherein the turning opening plate is provided. Is connected to the inner peripheral surface of the drainage cylinder via a pair of connection pieces positioned on a swivel axis extending substantially in the shape of the drainage cylinder, and is centered on the pair of connection pieces. A synthetic resin container lid rotatably disposed in the drainage tube portion, wherein the main body, the pair of connecting pieces and the swiveling opening plate are integrally formed; In a normal state in which no turning force is applied to the plate and the pair of connecting pieces are not elastically twisted, the plate is positioned at a closed position at least partially closing the drainage cylinder, When a turning force acts on the pair, the pair of connecting pieces are elastically twisted to be turned from the normal state and turned. The container lid is provided, wherein the drainage cylinder portion is gradually opened as it is operated, and returns to the closed position by the elastic force of the pair of connecting pieces when the action of the turning force is released. You.

According to the present invention, there is further provided a main body which is attached to the mouth and neck of the container and has a drainage cylinder following the mouth and neck, and a swivel opening plate provided in the drainage cylinder, The opening plate is a synthetic resin container lid that is disposed inside the drainage cylinder so as to be pivotable about a pair of connection pieces positioned on a pivot axis extending substantially in the shape of the drainage cylinder, An insertion member formed separately from the main body is combined with the main body, the insertion member has a peripheral portion located below the drainage cylinder portion of the main body, and the turning opening plate is The peripheral portion, the pair of connecting pieces and the turning opening plate are integrally formed with the peripheral portion via the pair of connecting pieces, and the turning opening plate has a turning force applied to the turning opening plate. In a normal state in which the pair of connecting pieces are not elastically twisted and the drainage cylinder is slightly When a turning force is applied to the turning opening plate, the pair of connecting pieces are elastically twisted and turned from the normal state. The container lid is provided which is gradually opened and returns to the closed position by the elastic force of the pair of connecting pieces when the action of the turning force is released.

[Function of the invention]

In the container lid of the present invention, the container is sharply inclined,
Due to this, even if the liquid suddenly flows in the discharge direction, the force (swirl force) applied from the flowing liquid to the swivel opening plate does not cause the swiveling opening plate to be sharply and largely opened, and thus the liquid is drained. The amount of liquid discharged through the cylinder is sufficiently stabilized and regulated to a predetermined range. In other words, when the container is rapidly inclined and the liquid suddenly flows in the discharge direction, the turning axis of the turning opening plate extends the liquid discharge cylinder portion to a substantially diameter shape.
The liquid flowing in the discharge direction collides with the inner surface of the swivel open moving plate on both sides of the swivel axis, and therefore swirls the force (swirl force) in the direction that causes the swivel open moving plate to swivel and open (swirl force). Acting on the opening plate, therefore, the opening movement of the turning opening plate is suppressed, and the discharge of liquid is suppressed.

In addition, when the container is not abruptly inclined but relatively gently, the pair of connecting pieces are elastically twisted by the action of the swirling force of the liquid flowing in the discharge direction, and the swiveling opening plate is gradually turned. , The drainage cylinder is gradually opened. Because, in this case as well, the turning force in the direction that causes the turning opening plate to turn and the turning force in the direction opposite thereto acts on the turning opening plate, and the turning movement of the turning open plate is appropriately suppressed. It is. As a result, the liquid is discharged through the drain cylinder while the liquid amount is sufficiently stable and regulated to a required range.

Further, when the inclined container is returned to the inverted position, the action of the turning force is released, and the turning opening plate automatically returns to the closed position by the elastic force of the pair of connecting pieces. . As a result, the drainage cylinder is securely closed by the revolving open plate leaving a predetermined initial gap, so that it is possible to restrict the rapid discharge of the liquid in the container as described above.

(Preferred specific examples)

Hereinafter, with reference to the accompanying drawings, preferred examples of a container lid configured according to the present invention will be described in detail.

Referring to FIG. 1 and FIG. 2, the illustrated container lid indicated by reference numeral 2 is entirely formed integrally by injection or compression molding from a suitable synthetic resin such as polypropylene or polyethylene. . The container lid 2 includes a main body 4, an upper lid member 6, and a turning opening plate 8.

The main body 4 includes a mounting portion 10 having a cylindrical shape. An annular locking ridge 12 is formed on the inner peripheral surface of the mounting portion 10. An annular upper wall 14 extending radially inward therefrom is connected to an upper end of the mounting portion 10. And this top wall
At the inner edge of 14, a cylindrical drainage cylinder 16 is provided. The drainage cylinder 16 has a lower portion extending below the upper wall 14 and an upper portion extending above the upper wall 14. Drain cylinder 16
Has an arcuate cross-sectional shape directed radially outward. On the outer peripheral portion of the upper wall surface 14, a relatively low cylindrical locking wall 18 extending upward is formed. At the upper end of the outer peripheral surface of the locking wall 18, a locking ridge 20 is formed.

The upper lid member 6 has a top wall 22 and a cylindrical skirt wall 24 extending from an outer peripheral edge of the top wall 22. Top wall 22
An annular seal wall 26 is formed on the inner surface of the. The upper lid member 6 is integrally connected to the main body 4 via a connection piece 28. The connecting piece 28 extends between the lower end of the skirt wall 24 of the upper lid member 6 and the upper end of the mounting portion 10 of the main body 4. Connection piece
Reference numeral 28 has a thin intermediate portion, and the upper lid member 6 is pivotable about the thin intermediate portion between a closed position shown by a solid line and a closed position shown by a two-dot chain line in FIG. When the upper lid member 6 is moved to the above position, the locking ridge 20 of the locking wall 18 of the main body 4 engages with the inner peripheral surface of the skirt wall 24 of the upper lid member 6.
On the opposite side of the connecting piece 28 in the diameter direction, an arc-shaped projection 30 is formed at the lower end of the outer peripheral surface of the skirt wall 24 so that a finger can be hooked when the upper lid member 6 is opened and closed.

As can be understood from FIG. 2, the turning opening plate 8 has a disk shape. The revolving opening plate 8 is connected to the inner peripheral surface of the drainage cylinder 16 of the main body 4 via a pair of connecting pieces 32 disposed to face each other in a substantially diametrical direction. Each of the pair of connection pieces 32 may have a thin rectangular shape. In a normal state where no force acts on the pair of connection pieces 32,
The pivoting opening plate 8 is located at the closed position shown in FIGS. In this closed position, the pivoting opening plate 8 extends substantially horizontally, and almost completely covers the drainage tube portion 16. However, in the embodiment shown, the outer diameter of the swivel plate 8 is somewhat smaller than the inner diameter of the drainage cylinder 16 and therefore
16 is not completely closed by the turning opening plate 8,
Two gaps 34 extending between the pair of connecting pieces 32 in an arc shape are interposed between the turning opening plate 8 and the drainage cylinder 8 located at the closed position. As will be further described later, when the fluid is discharged through the drainage cylinder 16, the pair of connecting pieces 32 are elastically twisted and the pivoting opening plate 8 is pivoted, thereby causing the drainage cylinder 16 to rotate. It is opened. That is, the pivot axis extending in the extending direction of the pair of connection pieces 32, and thus the drainage cylinder 16 has a substantially diameter.
The pivoting opening plate 8 is pivoted from the closed position around the center 36, whereby the drainage cylinder 16 is gradually opened.

As shown in FIG. 1, the above-mentioned container lid 2 is attached to the mouth and neck portion 38 of the container. The container itself for containing a liquid such as a liquid seasoning such as vinegar or soy sauce may be made of glass or synthetic resin. The mouth and neck portion 38 of such a container has a substantially cylindrical shape, and a locking ridge 40 is formed at the upper end of the outer peripheral surface. Container lid 2
Is the mouth and neck between the mounting part 10 and the lower part of
The upper end of 38 is positioned on the mouth and neck 38. Thus, the locking ridges 12 formed on the inner peripheral surface of the mounting portion 10
Engages with a locking ridge 40 formed on the outer peripheral surface of the mouth and neck portion 38, and thus the container lid 2 is held by the mouth and neck portion 38 of the container.

When discharging an appropriate amount of liquid contained in a container,
The upper lid member 6 is moved to the open position shown by the two-dot chain line in FIG. Next, the body (not shown) of the container is gripped with one hand and tilted as shown in FIG. As a result, the liquid in the container flows toward the mouth and neck portion 38 and collides with the lower surface, that is, the inner surface of the turning opening plate 8, causing the turning opening plate 8 to open. At the time of such opening movement of the turning opening plate 8, the pair of connecting pieces 32 are elastically twisted. Thus, when the container is suddenly tilted to the state shown in FIG. 3, the liquid in the container suddenly collides with the inner surface of the swivel opening plate 8. At this time, the area 42 below the pivot axis 36 in FIG.
In FIG. 3, the liquid that collides with the inner surface of the pivoting opening plate 8 acts in the direction that causes the pivoting opening plate 8 to pivot clockwise in FIG. 3, but in the region 44 above the pivot axis 36 in FIG. The liquid that collides with the inner surface of the turning opening plate 8 acts in a direction that resists the turning movement of the turning opening plate 8. Thus, the reciprocal reaction of the forces in the two directions suppresses the pivoting movement of the pivoting opening plate 8 appropriately, so that it is ensured that excessive liquid is discharged from the mouth and neck portion 38 of the container through the drainage tube portion 16. Is prevented. On the other hand, when the turning axis 36 of the turning opening plate 8 passes through the center of the turning opening plate 8, that is, when the turning axis 36 matches the diameter of the turning opening plate 8 (and the drainage cylinder 16), for example, the container is erected. When the state is reversed from the inverted state to the inverted state, the action of the liquid applied to the inner surface of the swivel opening moving plate 8 is such that the component in the turning opening movement direction and the component in the direction resisting it are balanced, so that the turning opening movement plate 8 is completely opened. An unforeseen situation may occur. In order to avoid such a situation, the turning axis 36 may be slightly displaced with respect to the diameter of the turning opening plate 8. When the turning opening plate 8 is opened as described above, of course, a pair of connecting pieces
The elastic torsional resistance of 32 also resists the pivoting movement of the pivoting motion plate 8. Thus, when only one connecting piece 32 is provided and the turning opening plate 8 is turned around a specific portion of the periphery thereof, as will be easily understood,
All of the liquid that collides with the inner surface of the pivoting opening plate 8 acts in the direction that causes the pivoting opening plate 8 to pivot and open. May be discharged through

4 and 5 show a second specific example of a container lid constructed according to the present invention. In the second specific example, the drainage cylinder portion 116 of the main body 104 has only a portion extending above the top wall 114, and does not have a portion extending below the top wall 114. On the other hand, the container lid 102 shown in FIGS. 4 and 5 has an insertion member 105 formed of a suitable synthetic resin such as polypropylene or polyethylene separately from the main body 104. The insertion member 105 includes an annular plate-shaped peripheral portion 107 and a turning opening plate 108 connected to the peripheral portion 107 via a pair of connecting pieces 132.
The pair of connecting pieces 132 may have the same form as the pair of connecting pieces 32 in the first specific example described above. An annular groove 109 is formed at the upper end of the inner peripheral surface of the mounting portion 110 of the main body 104, and the annular groove 10 extends over the outer peripheral edge of the peripheral portion 107 of the insertion member 105.
9 into the main body 104 by inserting
Are combined. As shown in FIG.
The main part of the peripheral part 107 of the fifth is sandwiched between the upper surface wall 114 of the main body 104 and the upper end surface of the mouth and neck 138 of the container.

The configuration of the container lid 102 shown in FIGS. 4 and 5 other than the above-described points is substantially the same as that of the container lid 2 shown in FIGS. 1 to 3, and thus is described above to avoid duplication. The description of the configuration other than the points is omitted.

(Examples and Comparative Examples)

Example A container lid having the form shown in FIGS. 1 to 3 was formed from polypropylene by injection molding. The main part dimensions of the formed container lid were as follows.

Inner diameter D of the drainage cylinder part 22.5 mm Outer diameter d of the pivoting opening plate 20.5 mm Thickness of the pivoting opening plate t1 1.0 mm Length l of each connection piece 1.0 mm Width w of each connection piece 0.5 mm Thickness of each connection piece t2 0.2 mm About 180 ml of water is put into a glass container with a nominal capacity of 200 ml ,
The container lid was attached to the mouth and neck of the container. The mouth and neck of the container were as illustrated in FIGS. 1 and 2.

With the upper lid member of the container lid in the open position, the container was gently moved, the time required for draining 100 ml was measured, and the amount of drainage was calculated from the measured value. The results were as shown in Table 1 below when the test was carried out on five container lids each at a tilt angle of the container of 5 °, 10 ° and 45 °.

Comparative Example 1 For comparison, a single connecting piece (length... 1.0 mm, width...) Is provided between the main body and the upper lid member at a position aligned with the connecting piece instead of the pair of connecting pieces.・ 8mm, thickness: 0.2mm)
A container lid identical to the container lid of the example was formed except that the liquid was formed, and the same drainage experiment as in the example was performed. The results were as shown in Table 1 below.

Comparative Example 2 Further, the same container lid as that of the example was formed except that the turning opening plate and the connection piece were not present, and a drainage experiment similar to that of the example was performed. The results were as shown in Table 1 below.

When the drainage experiment results of the embodiment and Comparative Examples 1 and 2 are considered in comparison, according to the container lid of the embodiment configured according to the present invention, the change in the drainage amount due to the inclination angle of the container is extremely small, and the drainage amount is small. It is clearly understood that is regulated to a required range with sufficient stability.

〔The invention's effect〕

In the container lid according to the present invention, when the container is abruptly tilted, it is reliably controlled that the pivoting opening plate is suddenly largely rotated by the balance of the turning forces acting on the pivoting opening plate in the opposite directions. Therefore, abrupt opening of the drainage cylinder can be reliably prevented, and abrupt discharge of liquid discharged through the drainage cylinder can be reliably prevented. Also, even when the container is tilted relatively slowly,
Since the turning opening plate is gradually turned by the balance of the turning forces acting on the turning opening plate in opposite directions, the drainage cylinder portion is gradually opened. Further, when the container which has been tilted is returned to the inverted position, the swiveling opening plate automatically returns to the closed position, so that the drainage cylinder portion is reliably left with a predetermined gap by the turning opening plate. Closed. As a result, according to the container lid of the present invention, the amount of liquid discharged through the drainage cylinder can be sufficiently and stably regulated to a required range.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first specific example of a container lid configured according to the present invention. FIG. 2 is a plan view of the container lid shown in FIG. 1, with most of the upper lid member being cut away. FIG. 3 is a cross-sectional view showing a state in which liquid is discharged from a container equipped with the container lid of FIG. FIG. 4 is a sectional view showing a second specific example of the container lid configured according to the present invention. FIG. 5 is a plan view of the container lid shown in FIG. 4, in which most of the upper lid member is cut away. 2 and 102 Container lids 4 and 104 Body 6 Upper lid member 8 and 108 Rotating opening plates 16 and 116 Drainage cylinders 32 and 132 Connection piece 36 Rotating axis 105 … Insertion member

Claims (2)

(57) [Claims] 1. A body mounted on a mouth and neck of a container and having a drainage tube following the mouth and neck, and a turning opening plate provided in the draining tube, wherein the turning opening plate is provided. The drainage cylinder is connected to the inner peripheral surface of the drainage cylinder via a pair of connection pieces positioned on a swivel axis extending substantially in the shape of a circle, and pivots about the pair of connection pieces. A synthetic resin container lid freely disposed in the drainage cylinder portion, and the main body, the pair of connecting pieces and the turning opening plate are integrally formed, wherein the turning opening plate is the turning opening plate; In the normal state in which the turning force is not applied to the pair of connecting pieces and the pair of connecting pieces are not elastically twisted, the connecting portion is positioned at the closed position at least partially closing the drainage cylinder, and When a turning force is applied, the pair of connecting pieces are elastically twisted to be turned and turned from the normal state. Wherein the drainage tube portion is gradually opened in accordance with the rotation of the container, and when the action of the turning force is released, the container returns to the closed position by the elastic force of the pair of connecting pieces. 2. A body mounted on a mouth and neck of a container and having a drainage cylinder following the mouth and neck, and a turning opening plate disposed in the draining tube, wherein the turning opening plate is provided. A synthetic resin container lid disposed in the drainage cylinder so as to be pivotable about a pair of connection pieces positioned on a pivot axis extending substantially in the shape of the drainage cylinder; A separately formed insertion member is combined with the main body, the insertion member has a peripheral portion positioned below the drainage cylinder portion of the main body, and the turning opening plate is connected to the pair of connection members. The peripheral portion, the pair of connecting pieces, and the pivoting opening plate are integrally formed with each other through a piece portion, and the pivoting opening plate receives a pivoting force acting on the pivoting opening plate. In a normal state in which the pair of connecting pieces are not elastically twisted, at least When the pivoting force acts on the pivoting opening plate, the pair of connecting pieces are elastically twisted and pivoted from the normal state, and the drainage cylinder is gradually opened as the pivoting is pivoted. The container lid returns to the closed position by the elastic force of the pair of connecting pieces when the action of the turning force is released.