JP2005162267A - Tab of easily openable lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tab of an easily openable lid, which prevents the breakage of a score that is caused when a finger hooking part gets caught in something and improves the hooking performance of the hooking part upon opening the lid. <P>SOLUTION: The tab comprises a fixed part 2 fixed to the lid 10, and a hold 3 extending from the fixed part 2 along the lid 10. The hold 3 has a finger hooking hole 31, and the finger hooking part 32, which is the end of the tab that is at the opposite side to the fixed part 2 across the finger hooking hole 31 of the hold 3. The inside edge 32a of the finger hooking part 32 that faces the finger hooking hole 31 is located above the outside edge 32b of the finger hooking part 32 relative to the lid 10 to make a gap g for hooking a finger between the inside edge 32a and the lid 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a tab of an easy opening lid used for, for example, a can lid of an easy opening can.

Generally, a tab of an easy opening lid includes a fixing portion fixed to the lid body and a knob portion extending from the fixing portion along the upper surface of the lid body. A finger hooking hole is provided in the knob portion, and an end portion on the side opposite to the fixing portion is a finger hooking portion with the finger hooking hole therebetween. A finger is put on the outer edge of the finger hook portion to cause the knob portion to move upward, and the score located near the fixed portion is broken.
The finger hook portion of the knob portion is configured to have no protrusion or a flat shape so that the finger hook portion does not get caught during transport or the like. Such tabs are described in Patent Documents 1 and 2, for example.

  However, if the finger hook portion has a flat shape, the finger hook property during opening operation is deteriorated. In order to improve the finger holdability, a tip-up method is effective in which the outer edge of the finger hook portion is lifted to increase the gap with the top surface of the lid, but the outer edge of the finger hold portion that is tipped up unintentionally. May be caught, the score may break, and the sealing performance may be impaired.

If the score breaks greatly, it is easy to find, but if it is slightly opened, it may be overlooked. In particular, in the case of an easy opening lid for opening the entire surface, in addition to the main score formed along the outer peripheral edge of the lid body, a vent score located below the tab is provided, and the vent score is slightly If it breaks, it is not easy to find because it is hidden by the knob.
JP 2000-128168 A Japanese Patent Publication No. 50-22957

  The present invention has been made to solve the above-described problems of the prior art, and the object of the present invention is to prevent score breakage due to catching on the finger catching part and to prevent finger catching during opening operation. An object of the present invention is to provide a tab of an easy opening lid that can improve the performance.

In order to achieve the above object, the invention according to claim 1 includes a fixing portion fixed to the lid body, and a knob portion extending from the fixing portion along the lid body, the knob portion is provided with a finger hooking hole, In the tab of the easy opening lid where the end portion on the side opposite to the fixed portion is a finger hook portion across the finger hooking hole of the knob portion,
An inner edge facing the finger hooking hole of the finger hook portion is positioned above the lid body with respect to the outer edge, and a gap is formed between the inner edge and the lid body so that a finger can be hooked.

  The invention according to claim 2 is characterized in that the outer edge of the finger hook portion is in close contact with the upper surface of the lid.

According to the first aspect of the present invention, the inner edge of the finger hook portion is positioned above the cover body with respect to the outer edge, and the initial opening operation is performed by placing a finger on the inner edge. By reducing the gap between the lid and the lid, there is no problem that the outer edge of the finger hook portion is caught and lifted during transportation, and it is possible to prevent the score break accident.
Also, the finger holdability is improved by lifting the inner edge of the finger hook portion. Even if the inner edge is caught by something, the direction in which the inner edge is hooked is the direction in which the fixed portion is pulled, so that no force acts in the score breaking direction.

  According to the second aspect of the present invention, since the outer edge is brought into close contact with the upper surface of the lid, it is possible to reliably prevent the finger hook portion from being caught on the outer edge.

The present invention will be described in detail below based on the embodiments shown in the drawings.
1 and 2 show a tab of an easy opening lid according to an embodiment of the present invention.
The tab 1 of the easy opening lid is a rigid thin plate-shaped member, and includes a fixing portion 2 fixed to the lid body 10 and a knob portion 3 extending from the fixing portion 2 along the can lid 10. A finger hooking hole 31 is provided in the knob part 3, and the end on the side opposite to the fixing part is a finger hooking part 32 across the finger hooking hole 31.

  The lid 10 is for opening the entire surface, a disk-shaped panel portion 11, a peripheral wall portion 12 rising from the peripheral edge of the panel portion 11, and extending outward from the peripheral wall portion 12, and a winding flange 51 of the can body 50. A main curl 14 for opening the entire surface on the outer peripheral edge of the panel portion 11 so that almost the entire surface of the panel portion 11 is opened. The panel unit 11 is provided with a vent score 17 in addition to the main score 14. The vent score 17 is provided on the opposite side to the main score 14 (center side of the lid 10) with respect to the rivet portion 15 for fixing the fixing portion 2, and is positioned below the tab 1.

  The tab 1 is attached to a circular opening planned area surrounded by the main score 14 of the panel portion 11, the fixing portion 2 is fixed close to the main score 14, and the knob portion 3 is fixed to the fixing portion 2. It is arranged on the center side of the panel 11.

  The fixing portion 2 has a trapezoidal shape in which the width gradually decreases from the boundary portion with the knob portion 3 toward the main score 14, and a concave portion 21 that is recessed in a triangular shape is formed at the center, and the rivet portion 15 is formed in the concave portion 21. Is fixed. The left and right sides of the recess 21 are provided with bead portions 22, 22 having rigidity continuously extending from the knob portion 3, and the bead portions 22, 22 extend to the tab tip portion 4 where the main score 14 is broken.

  The knob portion 3 has a round frame shape surrounding the oval finger hook hole 31, side plate portions 33, 33 positioned on the left and right sides of the finger hook hole 31, and a finger hook portion 32 that connects the tip portions of the side plate portions 33, 33. It is the composition provided with. The left and right side plate portions 33, 33 are continuous with the bead portions 22, 22 of the fixed portion 2. The left and right side plate portions 33 are also formed in a rigid three-dimensional cross-sectional shape although not particularly shown.

And the inner edge 32a which faces the finger hooking hole 31 of this finger hook part 32 is located above the can lid 10 with respect to the outer edge 32b, and there is a gap g between which the finger is hooked between the inner edge 32a and the can lid 10. Is formed. The lower limit of the dimension range of the gap g is about 1 mm, preferably about 2 mm. The upper limit is about 5 mm, preferably 4 mm. If it is larger than this, there are disadvantages such as inferior handling at the time of production such as stacking the lids. Further, in order to make it easier for a finger to enter from the inside of the finger-holding hole 31 of the tab 1 and to be easily hooked, it is better to increase the area of the finger-holding portion 32. In this example, the inner edge is larger than the arc-shaped outer edge 32b. The shape of 32a is made linear to increase the area.
The knob portion 3 is bent at two places, a valley fold portion V and a mountain fold portion M, which are formed at a predetermined interval. The bending process may be a simple bending process without a crease. The knob portion 3 is gradually lifted upward from the valley fold portion V toward the finger hook portion 32, becomes the highest point at the position of the mountain fold portion M, and moves from the mountain fold portion M toward the outer edge 32b of the finger hook portion 32. It gradually tilts downward.
The valley fold portion V is provided near the base of the left and right side plate portions 33 and 33 of the knob portion 3 on the fixed portion 2 side, and the mountain fold portion M is provided near the connection portion of the left and right side plate portions 33 and 33 with the finger hook portion 32 side. The inner edge 32a of the finger hook portion 32 is located slightly below the apex position of the mountain fold portion M.

  In the illustrated example, the finger hook portion 32 is configured to linearly incline toward the panel portion 11 of the can lid 10 from the inner edge 32a toward the outer edge 32b, and the outer edge 32b is a panel portion of the can lid. 11 is in contact with the bottom surface of the step recess 16 at the center. But the outer edge 32b does not necessarily need to contact | abut with the panel part 11, and it is good also as a structure which adjoins through a predetermined clearance gap.

  In the illustrated example, the stepped recess 16 is formed below the inner edge 32 a of the finger hook portion 32, and the gap g with the inner edge 32 a is increased by the depth of the stepped recess 16. The planar shape of the stepped recess 16 is a semicircular shape, and the straight portion 16a is opposed to the inner edge 32a. However, the planar shape of the stepped recess 16 may be circular.

Next, the operation of the tab of the easy opening lid of the present embodiment will be described.
When opening, a finger is put on the inner edge 32a of the finger hook portion 32 of the tab 1 and lifted upward. The tab 1 may be raised as it is and the opening operation may be performed, or after lifting, the finger may be put under the outer edge 32b and the opening operation may be performed. Since the inner edge 32a of the finger hook part 32 is positioned upward and the gap g for finger hooking is provided, the finger hooking property is good.

  Further, since the outer edge 32b of the finger hook portion 32 is in contact with or close to the bottom surface of the stepped recess 16 of the panel 11 of the lid body 10, the finger hook portion 32 of the finger hook portion 32 is manufactured at the time of manufacturing and transporting the easy opening lid. There is no risk of catching on the outer edge 32b, and an accident that the outer edge 32b rises and the score breaks can be prevented.

  Even if something is caught on the inner edge 32a side, the direction of the hook is the direction of pulling the fixing portion 2, and therefore, as shown in FIG. 3A, a moment MA in the direction of lifting the tip 4 of the tab 1 acts. However, the “lever” action does not work in the direction of the score 14 break. On the other hand, in the case of the shape in which the outer edge 32b is chipped up, the leading direction 4 of the tab 1 is set to the score 14 because the hooking direction is the direction of pushing the fixing portion 15 as shown in FIG. There is a possibility that the moment MB in the pressing direction acts, and the “lever” action works to lead to breakage.

In the above embodiment, the two folds are formed at the valley fold V and the mountain fold M, but the valley fold V may be eliminated and only the mountain fold M may be provided.
Further, instead of bending, as shown in FIG. 1C, only the middle portion 321 of the finger hook portion 32 is twisted so that the inner edge 32a is positioned above the outer edge 32b. Good.
Further, in the above embodiment, the tab of the easy opening lid with the entire surface opening has been described, but it is needless to say that it can also be applied to the tab for partial opening, and the container to which the easy opening lid is applied is limited to a can body. Is not to be done. When the present invention is provided for a partially open can lid of a type in which a tab such as a beverage can lid is fixed to the center of the lid, the tab can be pulled up by placing a finger on the inner edge side 32a of the knob portion 32. Therefore, as shown in FIG. 4 (A), the tab portion 32 of the tab can be extended from the conventional lid to the outer peripheral edge of the can lid as compared with the conventional can lid (FIG. 4 (B)). Therefore, the finger hooking hole 31 can be enlarged, and the distance between the rivet portion 15 and the finger hooking portion 32 is increased, and this action is also increased.

1A is a perspective view of an easy opening lid provided with a tab according to an embodiment of the present invention, FIG. 1B is an enlarged perspective view of the tab, and FIG. 1C is a modified example of a finger hook portion. FIG. 2A is a plan view of the easy opening lid of FIG. 1, and FIG. 2B is an enlarged cross-sectional view taken along the line BB of FIG. FIG. 3 (A) is an explanatory view of the action when the inner edge of the finger hook part of the present invention is caught, and FIG. 3 (B) is the outer side of the finger hook part of the comparative example in which the outer edge of the finger hook part is lifted. It is operation | movement explanatory drawing when a catch arises in an edge. 4A and 4B are operation explanatory views when the present invention is applied to a partial opening lid. FIG. 4A is a plan view of the lid when the present invention is applied, and FIG. 4B is a plan view of a conventional lid for leather.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tab 10 Cover body 11 Panel part, 12 Perimeter wall part, 13 Winding curl part, 14 Main score 15 Rivet part, 16-step recessed part, 17 Vent score 2 Fixing part 21 Recessed part, 22 Bead part 3 Knob part 31 Finger hooking hole, 32 Finger hook part, 33 Side plate part 32a Inner edge, 32b Outer edge V Valley fold part M Mountain fold part

Claims (2)

A fixing portion fixed to the lid body, and a knob portion extending from the fixing portion along the upper surface of the lid body. The knob portion is provided with a finger hooking hole, and an end portion on the side opposite to the fixing portion is separated from the finger hooking hole. In the tab of the easy opening lid that is a finger hook,
An easy opening lid characterized in that an inner edge facing the finger hooking hole of the finger hook portion is positioned above the lid body with respect to the outer edge, and a gap is formed between the inner edge and the lid body so that a finger can be hooked. Tab. The tab of the easy opening lid according to claim 1, wherein an outer edge of the finger hook portion is in close contact with the upper surface of the lid.

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