JP4388622B2 - Synthetic resin container lid with pull ring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin container lid particularly suitable for a container containing a liquid such as a liquid seasoning, and more particularly, the bottom wall cut-out area is broken by pulling with a finger on the pull ring, thereby the discharge opening. It is related with the synthetic resin container lid | cover of the form in which is produced | generated.
[0002]
[Prior art]
As is well known to those skilled in the art, a synthetic resin container lid composed of a container lid body and a crown cap portion is widely used as a container lid for containers containing liquids such as liquid seasonings. Yes. The container lid body attached to the mouth / neck portion of the container has a bottom wall in which a cutout area is defined by a breakable line, a connection column extending upward from the cutout area of the bottom wall, and a cutout area via the connection post. Includes linked pull rings. The crown cap body is pivotally connected to the container lid body or formed separately from the container lid body, and is selected as a closed position that covers the bottom wall of the container lid body, the connecting column, and the pull ring, and an open position that exposes them. Positioned. When the crown cap body is in the open position, the pulling line is broken by pulling with a finger on the pull ring, and when the cut area is cut from the bottom wall, a discharge opening is created in the bottom wall, and the discharge opening is accommodated in the container. The contents can be discharged.
[0003]
[Problems to be solved by the invention]
The container lid main body in the synthetic resin container lid of the said form has the problem which should be solved as follows. In particular, when the mouth and neck of the container has a relatively small diameter, and therefore the container lid body has a relatively small diameter, the pull ring inevitably has a small diameter, and it is not always easy to put a finger on the pull ring. As a solution to this problem, in the synthetic resin container lids disclosed in Japanese Utility Model Publication Nos. 56-49899 and 53-129655, the pull ring is inclined upward as it moves away from the connecting column. It is intended to be extended. However, even if the pull ring is designed in such a form, when the container lid main body is detached from the mold in the container lid main body molding process, it is generated in the vicinity of the connecting column due to the presence of the pull ring. Will cause the connecting column to tilt inwardly upward and therefore tend to tilt downward as the pull ring moves away from the connecting column, and therefore extends upwardly as required as it moves away from the connecting column. It is quite difficult if not impossible to form a container lid body with a shaped pull ring with high efficiency.
[0004]
The present invention has been made in view of the above-described facts, and the technical problem thereof is that the pull ring is sufficiently easily pointed to the pull ring even if the pull ring is not inclined and extended upward as required. A new and improved synthetic resin container lid is provided.
[0005]
[Means for Solving the Problems]
According to the present invention, in order to solve the above technical problem, a finger that is substantially aligned with the connecting column and extends upward from the upper edge of the pull ring is attached to the pull ring, and the finger that has entered the pull ring. Is engaged with the extending portion to tilt the connecting column and the pull ring, and thus it is possible to facilitate putting a finger on the pull ring.
[0006]
That is, according to the present invention, as a synthetic resin container lid that achieves the above technical problem, a bottom wall in which a cutting area is defined by a breakable line, and a connecting column extending upward from the cutting area of the bottom wall And a pull ring connected to the cut-out area via the connecting post, the breakable line is broken by pulling the pull ring with a finger, and the cut-out area is cut off from the bottom wall and discharged. In a synthetic resin container lid where an opening is generated,
The pull ring is provided with an extending portion extending substantially upward from the upper edge thereof substantially in alignment with the connecting column, and a finger that has entered the pull ring is engaged with the extending portion. There is provided a synthetic resin container lid characterized in that the connecting column and the pull ring can be tilted, and thus it is possible to help put a finger on the pull ring.
[0007]
It is preferable that the connecting column and the extending portion extend substantially vertically.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a synthetic resin container lid according to the present invention will be described in more detail with reference to the accompanying drawings.
[0009]
Referring to FIGS. 1 and 2, the entire container lid denoted by reference numeral 2 is integrally formed of a suitable synthetic resin such as polypropylene or polyethylene, and the container lid body 4 and the container lid. The cap 6 is connected to the main body 4.
[0010]
The container lid body 4 has a bottom wall 8 which may be substantially disk-shaped. An outer hanging wall 10 and an inner hanging wall 12 are formed on the lower surface of the bottom wall 8. The outer hanging wall 10 has a substantially cylindrical shape and is suspended downward from the outer peripheral edge of the bottom wall 8. The inner hanging wall 12 is also substantially cylindrical, and is suspended downward from the lower surface of the bottom wall 6 concentrically with the outer hanging wall 10. An annular locking ridge 14 is formed on the inner peripheral surface of the outer hanging wall 10 so as to protrude radially inward. An inverted frustoconical portion 16 whose outer diameter is gradually reduced downward is formed at the lower part of the outer peripheral surface of the inner hanging wall 12, and a lower end portion located below the inverted frustoconical portion 16 is formed. The outer diameter is made smaller than the outer diameter of the main part located above the inverted truncated cone shape part 16.
[0011]
An annular locking wall 18 is formed on the upper surface of the bottom wall 8. The locking wall 18 has a substantially cylindrical shape extending upward from the outer peripheral edge on the upper surface of the bottom wall 8, and an annular locking ridge 20 protruding radially outward is formed at the upper end of the outer peripheral surface. A pouring guide wall 22 is also formed on the upper surface of the bottom wall 8. The extraction guide wall 22 has a substantially cylindrical shape extending upward from the upper surface of the bottom wall 8, and its upper end is curved outward in the radial direction. In the illustrated embodiment, the dispensing guide wall 22 is not concentric with the locking wall 18 and is displaced slightly to the left in FIGS. 1 and 2 with respect to the locking wall 18. The locking wall 8 is relatively low, the dispensing guide wall 22 is relatively high, and the dispensing guide wall 22 extends upward beyond the locking wall 8.
[0012]
The bottom wall 8 is further formed with a breakable line 24 that extends in a circular shape radially inward from the inner hanging wall 12 and the extraction guide wall 22, and a circular cutout region 26 is formed by the breakable line 24. It is prescribed. The breakable line 24 can be composed of a so-called score with a reduced thickness. The central portion 28 of the cut-out region 26, and hence the central portion 28 of the bottom wall 8, is immersed downward in a substantially hemispherical shape. In the cut region 26, a connecting column 30 is formed that extends substantially vertically upward from the peripheral edge specific angle position. A pull ring 32 extending in a substantially annular shape is attached to the connecting column 30. In other words, the pull ring 32 is connected to the cutout region 26 of the bottom wall 8 via the connecting pillar 30. In the illustrated embodiment, the pull ring 32 extends substantially horizontally from the connecting column 30 and is arranged substantially concentrically with the dispensing guide wall 22. Three arc-shaped ridges 34 are formed on the inner peripheral surface of the front half of the pull ring 32 (that is, the left half in FIG. 2) at intervals in the axial direction to prevent slipping of fingers. Yes.
[0013]
Referring to FIG. 3 together with FIGS. 1 and 2, in the container lid 2 configured according to the present invention, the pulling portion 32 of the container lid body 4 extends upward from its upper edge. It is important that the extension portion 36 is extended substantially upwardly in alignment with the connecting column 30 (in other words, arranged on the extension line of the connecting column 30). It is. In the illustrated embodiment, the extending portion 36 is occupied not extend substantially vertically Following consolidated pillar 30. The extension length of the extension portion 36 may be such that the upper end of the extension portion 36 is close to the inner surface of the top wall of the crown cap portion 6 when the crown cap portion 6 is brought into a closed position described later. The circumferential width of the extending portion 34 may be substantially the same as the circumferential width of the connecting column 30.
[0014]
1 and FIG. 2, the crown cap 6 is suspended from the circular top wall 38 and the peripheral edge of the top wall 38 (that is, the closed position indicated by the two-dot chain line in FIG. 2). And a cylindrical skirt wall 40 that extends downwardly from the periphery of the top wall 38 when positioned at the top. The crown cap portion 6 is further formed with a cylindrical seal wall 42 extending downward from the inner surface of the top wall 38. In the illustrated embodiment, the seal wall 42 is not concentric with the skirt wall 40 and is displaced slightly to the right with respect to the skirt wall 40 in FIGS. 1 and 2 (the cap 6 is shown in FIG. 2). When positioned at the closed position indicated by a two-dot chain line, the skirt wall 40 is positioned concentrically with the locking wall 18 of the container lid body 4, and the seal wall 42 is concentric with the dispensing guide wall 22 of the container lid body 4. Located). The outer peripheral surface of the seal wall 42 is formed in an inverted truncated cone shape whose outer diameter gradually decreases toward the extending end. An inner diameter of the lower end portion of the skirt wall 40 is somewhat increased, and an annular locking protrusion 44 that protrudes inward in the radial direction is formed on the inner peripheral surface of the lower end portion. Such a cap 6 is connected to the container lid body 4 via a pivot connection 46 which may be in a known form. The swivel connecting portion 46 shown in the figure is disposed between the outer peripheral surface of the bottom wall 6 of the container lid body 4 and the lower end of the outer peripheral surface of the skirt wall 40 of the cap 6. The crown cap portion 6 is also formed with a protruding piece 48 that protrudes radially outward from the lower end of the outer peripheral surface of the skirt wall 40 on the diametrically opposite side of the swivel connecting portion 46.
[0015]
FIG. 2 also shows the mouth / neck portion 50 of the container to which the container lid 2 is applied. The mouth-and-neck portion 50 of the container which can be formed from an appropriate synthetic resin such as glass or polyethylene terephthalate has a substantially cylindrical shape. Is formed. As clearly shown in FIG. 2, the container lid body 4 is attached to the mouth / neck portion 50 by receiving the upper end portion of the mouth / neck portion 50 of the container between the outer hanging wall 10 and the inner hanging wall 12. The locking protrusion 14 formed on the inner peripheral surface of the outer hanging wall 10 is locked below the locking jaw portion 52 of the mouth-and-neck portion 50, whereby the container lid body 4 is locked to the mouth-and-neck portion 50. Is done. The outer peripheral surface of the inner hanging wall 12 is brought into intimate contact with the inner peripheral surface of the mouth-and-neck portion 50, and the lower surface of the bottom wall 8 is located between the outer hanging wall 10 and the inner hanging wall 12 at the upper end surface of the mouth-and-neck portion 50. The mouth and neck 50 is sealed by being brought into close contact. The cap 6 is normally positioned at a closed position indicated by a two-dot chain line in FIG. When the crown cap body 6 is positioned at the closed position, the locking protrusion 44 formed on the inner peripheral surface of the skirt wall 40 is formed on the outer peripheral surface of the locking wall 18 of the container lid body 4. The crown cap body 6 is locked below the ridge 20, and the crown cap body 6 is locked in the closed position indicated by the two-dot chain line. The outer peripheral surface of the seal wall 42 of the crown cap body 6 is brought into close contact with the upper portion of the inner peripheral surface of the dispensing guide wall 22 of the container lid body 4.
[0016]
When the description is continued with reference to FIG. 2, when the liquid stored in the container is discharged, the cap 6 is swung from the closed position indicated by the two-dot chain line to the open position indicated by the solid line. Next, the pull ring 32 is put on a finger and pulled upward. When the finger is put on the pull ring 32, as shown in FIG. 4, the finger partially inserted into the pull ring 32 is engaged with the inner surface of the extension portion 36, so that the extension portion 32 and the connecting post 30 are shown in FIG. And the pull ring 32 is tilted upward in the direction toward the left in FIG. In this way, the entry of the finger into the pull ring 32, particularly the entry of the finger into the front half of the pull ring 32 (the left half in FIG. 4) is encouraged, and even when the inner diameter of the pull ring 32 is relatively small, the pull ring 32 can be easily and easily formed. The pull ring 32 can be pulled upward by placing a finger. When the pull ring 32 is pulled upward, the breakable line 24 formed in the bottom wall 8 is broken, and the cut region 26 of the bottom wall 8 together with the pull ring 32 and the connecting post 30 is separated from the container lid body 4, and A discharge opening is created. Thereafter, the liquid in the container can be poured out through the discharge opening by tilting the entire container. The liquid poured out through the discharge opening is guided and smoothly poured out by the pouring guide wall 22 of the container lid body 4. When the required amount of liquid has been dispensed, the cap 6 is swung to the closed position indicated by the two-dot chain line in FIG. As a result, the outer peripheral surface of the sealing wall 42 of the crown cap 6 is brought into close contact with the upper part of the inner peripheral surface of the dispensing guide wall 22 of the container lid body 4, thereby primarily sealing the mouth / neck portion 50 of the container. .
[0017]
In the embodiment described above, the cap 6 is formed integrally with the container lid main body 4. However, if desired, the cap cap can be formed separately from the container lid main body. In this case, for example, instead of forming the locking protrusion on the outer peripheral surface of the locking wall of the container lid body, a male thread is formed, and the locking protrusion is formed on the inner peripheral surface of the skirt wall of the crown cap portion. Instead of forming a strip, a female thread is formed, and the female thread of the cap is screwed to the male thread of the container lid body, and the cap is attached to the container lid body so that it can be attached or detached freely. can do. Further, if desired, the container lid can be constituted only from the container lid body, and the container lid body can be used alone.
[0018]
【The invention's effect】
In the case of the synthetic resin container lid of the present invention, even if the pull ring is not inclined to extend upward as required as it moves away from the connecting column, and even if the pull ring is relatively small, the pull ring is sufficiently easily formed into the pull ring. It is possible to break the breakable line by placing a finger and pulling upward.
[Brief description of the drawings]
FIG. 1 is a plan view showing a preferred embodiment of a synthetic resin container lid constructed according to the present invention with a crown cap portion opened.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a partial perspective view showing a connecting column, a pull ring, and an extending portion disposed on the container lid main body in the container lid shown in FIG. 1;
4 is a partial cross-sectional view showing a manner in which a finger is put on a pull ring in the container lid shown in FIG. 1. FIG.
[Explanation of symbols]
2: Synthetic resin container lid 4: Container lid body 6: Cap portion 8: Bottom wall 24: Breakable line 26: Cut-off area 30: Connecting column 32: Pull ring 36: Extension part

Claims (2)

A bottom wall having a cutout area defined by a breakable line; a connecting post extending upward from the cutout area of the bottom wall; and a pull ring connected to the cutout area via the connecting post. In the synthetic resin container lid in which the breakable line is broken by pulling it with a finger and pulled, and the cutout area is cut off from the bottom wall to generate a discharge opening,
The pull ring is provided with an extension portion extending substantially upward from the upper edge thereof substantially in alignment with the connecting column, and a finger that has entered the pull ring is engaged with the extension portion. A synthetic resin container lid characterized in that the connecting column and the pull ring can be tilted, and thus it is possible to help put a finger on the pull ring. The connecting post and the extending portion extends substantially vertically, plastic container closure according to claim 1, wherein.

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