JP2011116450A - Can lid of universal design - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a can lid which can easily be opened by pulling up a tab by anybody, young and old of both sexes with a small force. <P>SOLUTION: First, the operation section of the tab can be kept still as it is by being lightly pulled up, and then, the opening of the opening section 11 is made to be performed. Thus, the opening means is made easier by dividing one opening means into two operations. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an easily openable can lid (easy open end) for beverage cans such as coffee, cola and beer, and seafood, fruits and other full open cans.

  Conventionally, can lids for beverage cans such as coffee, cola, and beer, seafood, fruits and other cans are configured as easy-open can lids using a tab mechanism.

  The easy open end of beverage cans is mostly a stion tab system, where the tab is fixed to the lid plate, and a broken portion is formed on the lid plate from the front of the fixed portion toward the pressing portion of the tab tip by a score line. Yes. By causing the operation part at the rear of the tab, it is cut by the pressing part at the front part of the fixing part and the front part of the tab. By subsequently raising the tab vertically, the score line is sequentially cut, the opening piece is folded into the can body to open the can, and then the tab is folded back to its original position to complete the opening.

  On the other hand, the easy open end of the full open can has an endless cut line engraved near the inner peripheral edge of the winding curled portion. The tab is attached so that the tip on the extension of the center line of the tab is located directly above the cut line, and the tab fixing part of the tab is a fulcrum by causing the ring part of the rear operation part of the tab. The tab tip is pushed downward, and an endless cut line provided immediately below the tab tip is cut by the tab tip and folded into the can body. Next, by inserting a finger into the ring part of the tab raised vertically and pulling the thumb against the lid of the can, the endless cut line on the lid plate is sequentially torn and opened in a fully open state. is there.

  By the way, the problem of the steion tab method and the full-open method is that when the tab is rotated to initially cut the cut line forming the opening piece, the fingertip is inserted into the lower part of the operation part of the cover plate and the tab. It is similar to causing a leaf spring that is in close contact with the lid plate and causing a tab by inserting a fingernail into the lower part of the tab operation part. Infants and elderly people are not able to open. The current situation is that barrier-free, which is originally desired, that is, nobody has reached the limit if anyone can easily open with their fingertips in various ways.

  The present invention has been made in view of such circumstances, and an object of the present invention is to easily cause a tab to be used by any elderly man and woman with a smaller force and easily open to a predetermined size. The object is to provide a universally designed can lid.

In order to achieve the above object, the can lid of the present invention is configured as follows.
(1) The invention according to claim 1 causes the tab (2) attached to the upper surface of the lid plate (12) via the foldable attachment piece (20) to lightly cause the operation portion (21) at the rear of the tab. The mounting piece (20) is rotated with the mounting piece (20) as a fulcrum, and the tab leading end (22b) and the cover plate side base end (20b) are in an equilibrium state with the mounting piece (20) where the maximum lifting force is concentrated. The cover plate side base end (20b) is caused to be almost vertical, the fractured portion (10b) of the cut line (10) is initially cut, and then it is folded into the can body while being cut from the side surface of the opening (11). In the can lid that completes the opening (Embodiment 1),
When the tab operating portion (21) is lightly raised and brought into an equilibrium state, the lid between the lid plate side base portion (20b) and the tab side base end portion (20e) can be kept stationary. It is characterized in that a moderately long region is formed and the steps of both base end portions are formed in an inclined shape.
Thereby, the tab operation part (21) can be easily caused by the fingernail of the finger, and can be stopped where the fingertip is sufficiently hooked on the tab (2).

(2) In the invention according to claim 2, the tab (2) attached to the upper surface of the opening (11) of the cover plate (12) via the foldable attachment piece (20) is connected to the operation portion at the rear of the tab. (21) is lightly raised and rotated with the mounting piece (20) as a fulcrum, the tab tip portion (22) and the cover plate side base end portion (20b) are in a balanced state and the maximum pressing force is concentrated. At the tip protruding part (25), the broken part (10d) of the cut line (10) is initially cut, and then the operation part (21) is vertically caused to fold the opening front part (11b) into the can body, In the can lid (Embodiment 2) which pulls up the operation part (21) and cuts the entire opening part (11) to complete the opening in a full open state,
Open the opening (11) and the front of the opening so that the tab operating part (21) can be lightly raised, the opening front (11b) can be folded into the can, and the folded opening front (11b) can be pulled up lightly. It is characterized in that a bent groove (16) for partitioning the portion (11b) is formed.

  Moreover, it is preferable to form the last end part (10n) following the fracture | rupture part (10d) of the cut line (10) which forms the said opening part (11) to near the back of a centerline (N) (claim). Item 3).

Further, a linear concave groove (20k) for positioning is formed between the terminal end hole (20h) of the tab mounting piece (20) and the one end terminal subhole (20j), and the tab (2) When the operating portion (21) is strongly raised, the leading end portions of the sub-holes (20h) and (20j) and the rear end portion and the leading end portion of the concave groove portion (20k) are respectively connected in a polygonal line shape, causing a strong cause. It is preferable to form a substantially triangular reinforcing zone (20n) so that the terminal element holes (20h) and (20j) are not torn by force.

  In addition, the reinforcing zone (20k) formed in a substantially triangular shape includes a terminal end child hole (20h) and a tip end portion of the child hole (20j) of the mounting piece (20). 20e), the rear end portion and the front end portion of the positioning concave or convex groove portion (20k) formed on the front end portion of the child hole and the center line of the tab are respectively connected in a polygonal line shape, It is preferable that the side base end part (20b) and the tip part of the concave groove part (20k) are inclined and formed (Claim 5).

  Moreover, it is preferable that the front-end | tip part (22b) of the press part (22) of the said tab (2) is formed in an inclined shape so that it may warp upwards at an appropriate angle (Claim 6).

  Further, when the operating portion (21) of the tab (2) is pulled up and the opening front portion (11b) is pulled up from the inside of the can body, the opening portion (11) is set so that the lifting force is concentrated only on the opening front portion (11b). ) And the opening front portion (11b) having a small and limited area, it is preferable to form a bent groove (16).

  Thus, as a feature of the opening of the can lid of the present invention, the tab (2) rotates to some extent before the initial cutting of the fracture portion (10d). The tab operation part (21) is raised and is in a stationary state. Up to this stage, the force to cause the tab (2) is light and can be caused by the toe.

  Next, when performing the initial cutting of the fractured part (10d), the operation part (21) of the tab (2) is raised and is in a stationary state, so that the fingertip is placed under the operation part of the tab (2). Since it is hung, the initial cutting of the fracture portion (10d) is facilitated. Therefore, it is possible to open the can lid in a barrier-free manner with a small force.

As described above, according to the present invention, the following excellent effects can be obtained.
(1) According to the first to seventh aspects of the present invention, the tab attached to the lid plate is free to play in the step and length regions at the lid plate side base end portion and the tab side base end portion so as to be lightly raised. In addition, the tab tip portion is inclined to provide a gap between the tab tip and the cover plate, so that anybody can be easily raised in a barrier-free manner.
(2) Since the tab can be made shorter than the conventional one, the diameter of the can lid can be made smaller and formed with a thinner plate, which can contribute to cost reduction and prevention of global warming.
(3) Since the bending groove is provided between the opening and the opening front on the upper surface of the lid plate, when the tab is pulled up, the opening front having a small limited area is lifted via the bending groove. Can concentrate and tear easily, and anyone can easily open the can lid.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.
1 to 9 show Embodiment 1 of the present invention. This is an example of applying the present invention to a beverage can lid.
1 and 2, reference numeral 1 denotes a can lid, and the can lid 1 is fixed to a can body 3 that contains beverages such as coffee, cola, and beer. The can lid 1 has a lid plate 12 having an opening 11 that closes the upper opening of the can body 3 and closes the region to be opened formed by the cut line 10, and a tab at the center of the lid plate 12. A tab 2 made of a thin plate attached to the caulking portion 14 is attached to the lid plate 12 via an attachment piece 20. The tab 2 is raised and the opening portion 11 is pressed by the pressing portion 22 to open the opening portion 11 from the lid plate 12. This is a stion tab type can lid that is folded into a can body while cutting the can to open the can.

<Lid plate 12>
As shown in FIGS. 1 and 3, the opening portion 11 of the lid plate 12 is formed by a cut line 10 that is engraved in a substantially 0 shape so as to substantially include the center of the lid plate 12. In this area, a tab crimping portion 14 for attaching the attachment piece 20 of the tab 2 to the lid plate 12 is formed at the center of the center lines L and N of the can lid 12. The final end portion 10n following the fracture portion 10d of the cut line 10 forming the opening portion 11 is formed near the rear of the center line N, and when the post-opening tab 2 of the opening portion 11 is returned to the original position, the tab 2 The tip stays below the lid plate 12 and is formed so as not to obstruct the drinking mouth.

<Tab 2>
As shown in FIGS. 6 to 9, the tab 2 presses the opening 11 and is folded from the lid plate 12 into the can body.
4 and 5 show the structure of the tab 2. The tab 2 is formed in a short shape as shown in FIG. In addition, a tab operating portion 21 that causes the tab 2 to be raised is formed on the rear side of the tab crimping portion 14, and a pressing portion 22 for lifting and cutting the fracture portion 10 d from the tab crimping portion 14 is semicircular. Is formed.

<Mounting piece 20>
The attachment piece 20 is fixed on the cover plate by the tab crimping portion 14 to form a cover plate side base end portion 20b (see FIG. 2), and extends from the cover plate side base end portion 20b to the tab side base end portion 20e. The front end portions of the terminal end child holes 20h and 20j of the mounting piece 20 form a tab-side base end portion 20e. The front end portions of the terminal end child holes 20h and 20j, the rear end portion and the front end portion of the positioning linear concave groove portion 20k are respectively connected in a polygonal line shape (see FIG. 4), and a substantially triangular reinforcing zone 20n is formed to be inclined. ing.

  The operation unit 21 can be caused by a slight force, and can be kept still after being in an equilibrium state, between the cover plate side base end 20b and the tab side base end 20e. Appropriately long regions are provided, and steps (see FIG. 5) with the respective base end portions are formed in an inclined shape so that the tab distal end portion 22b hardly moves backward even when the operating portion 21 is caused.

  The distal end portion 22b of the tab 2 extends from the tab side proximal end portion 20e to the tab distal end portion 22b and is inclined so as to warp upward at an appropriate angle, and a gap is formed between the distal end portion 22b and the lid plate 12. (See FIG. 2).

Next, the opening operation of the can lid configured as described above will be described. Embodiment 1. FIG.
As shown in FIG. 6, the operation part 21 of the tab 2 is lightly raised with a fingertip to be in an equilibrium state, and even if the fingertip is released as it is, the operation part 21 remains stationary.

  As shown in FIG. 7, by further causing the operation portion 21 of the raised tab 2 in the balanced state, the lid-plate-side base end portion 20b is pulled up with the tab tip end portion 22b and the tab-side base end portion 20e as fulcrums, The broken portion 10d of the line 10 is initially cut.

  Then, the opening 11 is continuously pressed as in the conventional case (see FIG. 8), and the tab 2 that has been cut vertically to the final end 10n of the cut line 10 sinks into the can. When pulled back to the original position, the distal end portion 22b of the tab 2 remains submerged in the can (see FIG. 9), and the distal end portion 22b does not obstruct the drinking mouth.

  Next, by taking advantage of the relation between the lid-side base end portion 20b and the tab-side base end portion 20e of the tab 2 and the substantially triangular reinforcing zone 20n and the gap between the tab tip end portion 22b and the lid plate 12, etc. FIG. 10 to FIG. 17 show a second embodiment in which the present invention is applied to a full open end for foods utilizing the openability.

<Lid plate 12>
As shown in FIGS. 10 and 11, an endless cut line 10 is engraved near the inner peripheral edge of the can lid. The caulking portion 14 is positioned so that the tab tip protrusion 25 (see FIG. 13) formed on the extension of the center line L of the tab (see FIG. 10) is positioned directly above the breaking portion 10d of the cut line 10. Is formed.
Further, a bending groove 16 is formed to partition the opening 11 and the opening front part 11b having a small limited area.

<Tab 2>
As shown in FIGS. 15 to 17, the tab 2 opens the opening 11 from the upper surface of the cover plate 12 to open fully.
12 and 13 show the structure of the tab 2. As shown in FIG. 12, the tab 2 is formed with a ring-shaped operation portion 21 that causes the tab 2 to follow behind the tab leading end protrusion 25.

  As shown in FIG. 13, a tab tip protrusion 25 is formed at the tip of the pressing portion 22.

  A substantially triangular reinforcing zone 20n is formed on the upper surface of the pressing portion 22 (see FIG. 12), and a gap is formed between the pressing portion 22 and the lid plate 12 (see FIG. 11).

Next, the opening operation of the food can configured as described above will be described. Embodiment 2. FIG.
As shown in FIG. 14, the operation portion 21 of the tab 2 is gently brought up to an equilibrium state with the fingertip, and further the operation portion 21 is caused to cause the tab distal end with the lid plate side proximal end portion 20 b and the tab side proximal end portion 20 e as fulcrums. A pressing force is applied to the projecting portion 25, the breaking portion 10d of the cut line 10 is cut, and the operation portion 21 is continuously caused vertically (see FIG. 15), so that the front portion 11b of the opening portion can be moved from the base end portion 20b on the lid plate side. Then, as shown in FIG. 16, the ring-shaped operation portion 21 is pulled upward, and as shown in FIG. 16, the pulling force is concentrated on the opening front portion 11b having a small area. (See FIG. 16), and then bending upward (see FIG. 17), the remaining cut line 10 of the opening 11 is all cut and fully opened.

  Thus, the difference from the can lid of the conventional full-open can is that there is a gap between the tab tip protrusion 25 and the upper surface of the can lid 12, so that the tab 2 is lightly raised, and the front portion of the opening The diffusion of the force is limited by the bending groove 16 so that the force applied to the lifting of 11b is not diffused to the wide opening 11, and it is torn to the upper direction of the lid plate through the bending groove 16 with a slight force. Open smoothly.

  As described above, the embodiment has been described. By causing the tab operation part to be lightly caused by a toe or the like, the tab can be kept still as it is, so that all people can easily put their fingertips on the tab and easily Can be opened, part of the universal design of can containers, each with smaller tabs and smaller can lid diameters to prevent global warming by reducing material costs Is also thought to contribute.

  It is a top view which shows the can lid | cover for drinks cans concerning Embodiment 1 of this invention.   FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1.   It is a top view which shows the can lid | cover of the drink can concerning Embodiment 1 of this invention.   It is a top view which shows the tab of the drink can concerning Embodiment 1 of this invention.   FIG. 5 is a cross-sectional view taken along line 5-5 in FIG.   It is sectional drawing similar to FIG. 2 which shows the state which raised the tab and was stationary in the equilibrium state.   Furthermore, it is sectional drawing which shows the state which raised the tab and was initially cut.   It is sectional drawing which shows the state which raised the tab perpendicularly | vertically after the initial cutting | disconnection, and folded the front from the last edge part.   It is sectional drawing similar to FIG. 2 which shows the state which returned the tab.   It is a top view which shows the can lid | cover of the full open can concerning Embodiment 2 of this invention.   11 is a cross-sectional view taken along line 11-11 in FIG.   It is a top view which shows the tab of the full open can concerning Embodiment 2 of this invention.   It is a 13-13 line arrow directional cross-sectional view in FIG.   It is sectional drawing which shows the state which raised the tab lightly and was in the equilibrium state.   It is sectional drawing which shows the state which raised the tab perpendicularly | vertically with respect to the cover plate, initially cut the front part of the opening part, and the front part of the opening part was folded in the can.   It is sectional drawing which shows the state which pulled up the tab and pulled up the opening part front part via the bending groove.   It is sectional drawing which shows the state which pulls up the tab continuously and tears all the remaining cut lines of an opening part.

1 can lid 2 tab 3 can body 10 cut line 10d cut line breaking part 10n final end part 11 opening part 11b opening front part 12 lid plate 14 tab crimping part 16 partition line bending groove 20 tab attachment piece 20a lid plate side fixing Part 20b cover plate side base end part 20e tab side base end part 20h tab attaching piece terminal part child hole 20j tab attaching piece terminal part child hole 20k positioning linear concave groove part 20n substantially triangular reinforcement zone 21 operation part 22 pressing part 22b tab front end Part 25 Tab tip protrusion L Horizontal center line N Vertical center line

Claims (7)

The tab (2) attached to the upper surface of the cover plate (12) via the foldable attachment piece (20) is caused to lightly cause the operation portion (21) at the rear of the tab to rotate with the attachment piece (20) as a fulcrum. The attachment piece (20) in which the tab tip end portion (22b) and the cover plate side base end portion (20b) are in a balanced state and the maximum lifting force is concentrated, and the cover plate side base end portion (20b) is almost In the can lid, which is vertically raised, severes the fractured part (10d) of the cut line (10), and subsequently cuts from the side part of the opening (11) to complete the folding opening in the can body,
When the tab operation portion (21) is slightly raised and brought into an equilibrium state, the lid-plate-side base end portion (20b) and the tab-side base end portion (20e) are provided so that the raised tab can be kept stationary. A can lid characterized in that a moderately long region is formed between and a step between both base end portions is formed in an inclined shape. The tab (2) attached to the upper surface of the opening (11) of the cover plate (12) via a foldable attachment piece (20) causes the operation part (21) at the rear of the tab to be lightly raised, and the attachment piece (20) The tab tip protrusion (25) where the maximum pressing force is concentrated in a balanced state between the tab tip portion (22) and the lid plate side base end portion (20b) ) Is initially cut, then the operation portion (21) is vertically raised, the opening front portion (11b) is folded into the can body, and then the operation portion (21) is pulled up to the opening portion (11). In the can lid, complete the opening to fully open by cutting all
Open the opening (11) and the front of the opening so that the tab operating part (21) can be lightly raised, the opening front (11b) can be folded into the can, and the folded opening front (11b) can be pulled up lightly. A can lid characterized in that a bent groove (16) for partitioning the portion (11b) is formed.   The can end according to claim 1, wherein the final end (10n) following the break (10d) of the cut line (10) forming the opening (11) is near the rear of the center line (N). A can lid characterized by being formed up to.   The can lid according to any one of claims 1 and 2, wherein the tab mounting piece (20) is positioned between the terminal member hole (20h) and one terminal member hole (20j) for positioning. When the straight concave groove portion (20k) is formed and the operation portion (21) of the tab (2) is strongly raised, the distal end portions of the child holes (20h) and (20j) and the rear end of the concave groove portion (20k) The end portion and the tip portion are connected to each other in a polygonal line shape, and a substantially triangular reinforcing zone (20n) is formed so that the terminal portion child holes (20h) and (20j) are not torn by a strong cause force. Can lid.   The can lid according to any one of claims 1 to 4, wherein the reinforcing zone (20n) formed in a substantially triangular shape includes the terminal end child hole (20h) and the child hole (20j) of the mounting piece (20). The leading end of each of the two ends forms a tab side base end (20e), and the rear end of the concave or convex groove (20k) for positioning formed on the leading end of the child hole and the center line of the tab The can lid is characterized in that the portion and the distal end portion are connected in a polygonal line shape, and are inclined to the lid plate side base end portion (20b) and the distal end portion of the concave or convex groove portion (20k). .   The can lid according to any one of claims 1 to 5, wherein the tip (22b) of the pressing portion (22) of the tab (2) is inclined so as to warp upward at an appropriate angle. A can lid characterized by being formed.   In the can lid according to claim 2, when pulling up the operation part (21) of the tab (2) and pulling up the opening front part (11b) from the inside of the can body, the lifting force is applied only to the opening front part (11b). A can lid characterized in that a bent groove (16) is formed between the opening (11) and the opening front part (11b) having a small limited area so as to concentrate.

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