JP2009196701A - Can lid of universal design - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a can lid that allows any one of any age and sex to pull up a tab with a less force, and allows to open to a predetermined size at least at the center portion of the can lid. <P>SOLUTION: A tab chip movement adjusting portion (20d) is formed between lid plate-side base end portion (20b) and the tab side base end portion (20e) of the attachment piece (20) of a tab (2). Thereby, a tab operating portion (21) can be pulled up with a finger chip, and the pulled-up tab can stop at any position, and the finger chip can be hooked on the tab (2) sufficiently. <P>COPYRIGHT: (C)2009,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.

  2. Description of the Related Art Conventionally, beverage cans such as coffee, cola, and beer, and can lids for seafood, fruits, and other cans are configured as easy-open can lids (easy open ends) using a tab mechanism.

  The easy open end of beverage cans uses the stion tab method, and the tab is fixed to the center of the cover plate. Has been. By causing the operation part behind the tab, it is cut off by the pressing part at the front part of the fixing part and the front part of the tab. By continuing to cause the tabs to move vertically, the cut line is sequentially cut, the opening piece is folded into the can body and the can is opened, 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 vertically raised tab ring and pulling up the tab, the endless cut line on the cover plate is sequentially torn and opened in a full open state.

  By the way, the problem of the stion tab method is that when the tab is rotated to initially cut (pop) the cut line that forms the opening piece, the fingertip is inserted into the lid plate and the lower portion of the tab operation portion. This is similar to triggering a leaf spring that is in close contact with the lid plate. In order to wake up the tab, it is a burden of great force for the toe, especially for elderly people and people with disabilities in the fingertips that cannot open. This fact has been reported from time to time, and as a result, various openers for raising tabs are on the market, and the barrier-free nature that is originally desired, that is, anyone can easily open with their fingertips, has reached a range. There is no current situation.

  Therefore, the so-called barrier-free can lid, which can easily trigger the tab with one hand for both young and old, with less force, especially the drinking mouth can be opened to various predetermined sizes as needed. , Easy-to-end can lids with universal design that are safe and easy to drink without disturbing the tab are desired.

  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 anyone of young and old with a smaller force and to easily open a predetermined size. The purpose is to provide a universally designed can lid that is easy to drink.

In order to achieve the above object, the can lid of the present invention is configured as follows.
(1) According to the first aspect of the present invention, the tab (2) attached to the upper surface of the opening (11) of the lid plate (12) via the foldable attachment piece (20) is connected to the operation portion at the rear of the tab. (21) is caused to rotate about the mounting piece (20) as a fulcrum, and the first protrusion (23) of the tab front part is moved backward to the breaking part (10d) of the cover plate, and the breaking part (10d) is moved. The tab is pressed and folded into the can body while being cut from the side surface of the opening (11), then the tab is vertically raised to open far behind the center of the lid plate (12), and the tab mounting piece (20 ) Up to the part or more is folded into the can from the top of the can lid to open the opening (11), and the opening can be completed without changing the tab back to the top of the can lid. In Form 1),
When the tab operation part (21) is caused between the cover plate side base end part (20b) and the tab side base end part (20e) of the mounting piece (20), the tab rotates to some extent, and After the first projecting portion (23) of the pressing portion (22) moves backward in the direction of the breaking portion (10d), the pressing portion (22) is in an equilibrium state under the maximum pressing force, and the breaking portion (10d) is initially cut. This is characterized in that a tab tip movement adjusting portion (20d) having a length region to be formed is formed.
Thereby, the tab operation part (21) can be easily caused by the fingernail of the finger, and can be stopped at a place where the fingertip is sufficiently hooked on the tab (2). The reason why the opening is opened from the side surface of the opening (11) is to open the opening (11) widely after the crimping portion (14).

(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 caused to rotate about the mounting piece (20) as a fulcrum, and the tab tip (22b) is moved backward on the region outside the opening (11) of the lid plate (12), and the tab tip (22b) ) And the mounting piece (20), the front part of the opening (11) is pulled up, the fractured part (10d) of the cut line (10) is initially cut, and then the operating part (21) is caused vertically to form a cut line curve The front portion of the opening (11) is torn from the lid plate (12) by cutting the portions (10b, 10c), and then the operation portion (21) is pulled up to completely remove the curved line portion (10j) of the opening (11). In the can lid (Embodiment 2) which completes opening in a fully open state by cutting,
When the tab operation part (21) is gently raised between the cover plate side base end part (20b) and the tab side base end part (20e) of the mounting piece (20), the tab rotates to some extent, After the tab tip (22b) has moved backward in the direction of the breaking portion (10d), the tab tip movement in the length region is adjusted so that the breaking portion (10d) is pulled up vertically so that the initial cutting of the breaking portion (10d) is performed. Leaving the part (20d),
A gap is provided between the pressing portion reinforcing portion (22a) of the tip portion (22b) of the pressing portion (22) and the lid plate (12) in order to facilitate the initial moving of the tab operating portion (21). It is characterized by the formation.
Thereby, the tab operation part (21) can be easily caused by the fingernail of the finger, and can be stopped where the fingertip sufficiently hangs on the tab (2).

The easy open end of these can lids of the present invention can cause the operation portion (21) of the tab (2) with a slight force as long as it can be hung on the fingernail. It is possible to stand still with a fingertip fully hung on the lower side of the unit.
On the other hand, it is preferable that the opening (11) is also greatly opened to the left and right and front and rear around the tab, and it is required that the opening (11) is not easily opened by the pressure on the upper part of the lid at the time of transportation or the like. It is.

  The tab (2) that is attached to the opening (11) of the lid plate (12) via the bendable attachment piece (20) causes the operating portion (21) behind the tab to be lightly raised, and the attachment piece (20). Assuming an easy open end where the opening (11) is opened by pressing the side fracture (10d) of the opening (11) with the first protrusion (23) at the front of the tab. First, a tab tip movement adjusting portion (20d) is provided between the cover plate side base end portion (20b) and the tab side base end portion (20e) of the mounting piece (20), whereby the tab (2) is attached. When it is raised, the tab (2) rotates and the pressing part moves backward in the direction of the operating part. After the movement, the breaking part (10d) is initially cut and the tab operating part (21) is pointed. Can be easily caused by the tip of the toe, and the fingertip is fully hooked on the tab (2) To be able to rest in Rutokoro (claim 1).

  Moreover, the 1st protrusion part (23) and the 2nd protrusion part (24) of the said press part (22) which contact a cover plate are formed in cross-sectional reverse concave shape, and a 2nd protrusion part (24) is a straight line for positioning. In order to engage with the concave groove (13), the second protrusion (24) is preferably formed longer than the first protrusion (23) (Claim 3).

  Moreover, in the cutting line (20f) which forms the said attachment piece (20) so that pressing force may concentrate more on the 1st protrusion part (23) among the both front-end | tip protrusion parts (23, 24), it presses. A terminal end child hole (20h) is formed in the vicinity of the tab side base end (20e) on the first protrusion (23) side of the part (22), and the tab side base end on the second protrusion (24) side It is preferable to form the curved portion (20g) continuing to the end portion to the terminal end child hole (20j) provided in the vicinity of the center line (L) of the tab side base end portion (20e).

  In addition, a straight concave groove (20k) for positioning the curved portion (20c) is formed between the terminal end hole (20h) of the tab mounting piece (20) and the one end terminal hole (20j). When the operation portion (21) of the tab (2) is strongly raised, the end portions of the end portion sub-holes (20h) and (20j) and the rear end portion and the front end portion of the linear concave groove portion (20k) are Reinforced zones (20n) having a substantially triangular shape are formed so that the attachment pieces (20) are bent by a strong triggering force and bent so that the terminal end child holes (20h) and (20j) are not torn apart. (Claim 5).

  Moreover, the said fracture | rupture part (10d) is formed of the cut line (10) engraved on the cover plate (12), and this cut line (10) is the first protrusion ( 23) is formed so as to be located outside the curve portion (10e) of the cut line and the curve portion (10f) following the curve portion (10e), and the tab (2) is caused to be in equilibrium. The first protrusion (23) is preferably formed at a position where the tip of the first protrusion (23) moves backward immediately inside the upper part so that the first protrusion (23) can press and cut the fractured part (10d) ( Claim 6).

  Further, the end portion (10m) following the fracture portion (10d) of the cut line (10) forming the opening (11) is located far behind the center line (N) of the crimping portion (14). It is preferable to form so as to complete the opening in a state where the tab (2) is formed and the opening is left as it is (claim 7).

  Further, the opening (11) is engaged with the second protrusion (24) of the pressing portion (22), and the backward movement of the tab tip is parallel to the center line (L) of the lid plate (12). A straight concave groove portion (13) that guides to the first protrusion portion (23) after the pressing portion (22) moves backward is formed as a guide means, and a break portion (10d) near the first protrusion portion (23), It is preferable to form a straight line parallel to the center line (L) so that the initial cutting can be accurately performed.

  The opening (11) is greatly opened from the central portion of the can lid (1) toward the operation portion (21), and the tab (2) is connected to the operation portion (21 from the tab side base end portion (20e). It is preferable to form the outer diameter of the can lid (1) smaller than the diameter of the conventional outer diameter (Claim 9).

  Further, in the can lid according to claim 2 and claim 5, the attachment piece (20) is attached by a crimping portion (14) near a fracture portion (10d) at a front portion of the opening portion (11), The operating portion (21) of the tab (2) is raised, the tab tip end portion (22b) is moved backward by the tab tip end moving adjustment portion (20d), and the crimping portion (14) is moved with the tab tip end portion (22b) as a fulcrum. It is preferable that the fractured portion (10d) is initially cut by being pulled up vertically, and then the tab (2) is pulled up as it is, so that the opening (11) is fully opened (claim 10).

  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. Until 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 fracture 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 inserted or hung, the initial cutting of the fracture portion (10d) is facilitated. Therefore, anyone can open the can easily and barrier-free with a relatively small force.

  Furthermore, before the tab (2) is raised, the first protrusion (23) is positioned outside the curved line (10f) of the cut line (10). And only when the tab (2) is raised, the first projecting portion (23) is provided so as to move backward or directly above the fracture portion (10d). If the tab (2) is inadvertently applied with pressure, the opening (11) is partly cut and the can is opened.

  Furthermore, by providing a groove (13) for the guide means for easily guiding the movement of the tip of the tab along the direction from the pressing portion to the operation portion at the breaking portion (10d), the projection portion can be accurately moved backward. Positioning can be performed reliably.

As described above, according to the present invention, the following excellent effects can be obtained.
(1) According to the first to tenth aspects of the present invention, a part of the tab attachment piece with respect to the cover plate is formed as the tab tip movement adjusting portion, and the attachment piece is attached to the tab side base end portion of the attachment piece. Since the bending adjustment part that facilitates bending is provided, the tab can be moved very lightly and can be stopped anywhere, and the tab caused by the opening can be pushed against the cut line of the opening. Since the pressure can be concentrated at one point, the initial cutting is light, and any elderly person can easily open the can with one hand without barrier.
(2) Depending on the content of the beverage, it can be opened in various shapes and sizes after the crimping portion, and can be easily opened.
(3) Since the opening can be formed longer and longer from the center of the lid plate in the direction of the tab operation, and the tab can be shortened, the diameter of the can lid can be reduced, and the plate can be formed with a thinner plate. It can make a significant contribution to the prevention of global warming as well as reduction.
(4) According to the inventions of claims 1, 3 to 9, the cut line that forms the opening is formed before the tab is raised, and the pressing part is outside the cut line, and the tab is caused. Since the pressing portion is provided so as to be moved backward in the vicinity of the cut line only when the can is dropped, there is no worry that the can lid is accidentally opened even when the can is dropped.
(5) According to the invention described in claim 10, since the guide means for guiding the backward movement of the tab from the pressing portion along the direction of the operating portion is provided in the opening, the positioning of the protruding portion to the fracture portion is ensured. Can be done.
(6) Since the opening is completed by tearing in only one direction from the initial cutting toward the upper direction of the lid plate or downward, it can be safely and smoothly opened by anyone.

The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.
1 to 15 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 this can lid 1 is fixed to a can body 3 containing a beverage such as coffee, cola, beer, etc., and is made of the same material as the can body 3, such as aluminum. It is formed of a thin plate such as a tin steel plate. 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 Steion tab type can lid that is folded into the can body while cutting the can and the can opening is completed as it is.
The can lid 1 is fixed by being wound around the opening of the can body 3 at the periphery.

<Lid plate 12>
As shown in FIGS. 1, 3, and 4, the opening 11 of the cover plate 12 is formed by a cut line 10 engraved in a substantially U shape so as to substantially include the center of the cover plate 12. In the region of the opening 11, a tab crimping portion 14 for attaching the attachment piece 20 of the tab 2 to the opening 11 of the lid 1 is formed in the center of the center lines L and N of the lid 12. .
As shown in FIGS. 3 and 4, the cut line 10 of the opening 11 is composed of lines indicated by 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10m, and 10n. A folding groove 10s is formed for folding. Further, convex embosses 12 a and 12 b for reinforcing the cover plate 12 and the opening 11, and a concave emboss 12 e and a convex emboss 11 a are formed substantially along the cut line 10. 12d is formed in the reinforcement part 12a as a guide wall, and the linear recessed guide groove part 13 for positioning the front-end | tip protrusion part 24 of the press part 22 is formed.

<Tab 2>
As shown in FIGS. 10 to 15, the tab 2 presses the opening 11 and folds it into the can body from the lid plate 12.
3 and 5 to 9 show the structure of the tab 2. FIG. The tab 2 is formed in a short shape as shown in FIG. Further, a tab operation portion 21 for moving the tab 2 is formed on the rear side of the tab crimping portion 14, and the other end portion is pressed by the opening 11 from the tab crimping portion 14 and cut. A pressing portion 22 is formed for this purpose.

  As shown in FIG. 7, the tip of the pressing portion 22 is formed with a reverse concave shape in the width direction. That is, both end portions in the width direction protrude downward (in the direction of the cover plate 12) to form protrusions 23 and 24. When the pressing portion 22 presses the opening 11 (see FIG. 4), first, the protrusions 23 and 24 are formed. Is in contact with the opening 11 (see FIG. 3). Further, when the opening 11 is pressed against the first projecting portion 23 and the second projecting portion 24 of the pressing portion 22 and is cut, the tab side base end portion 20e so that the pressing force is concentrated on the projecting portion 23 at one point. A cutting line 20f is formed from the end terminal hole 20h in the vicinity, and a curved part 20g following the cutting line 20f and one terminal terminal hole 20j following the cutting line 20f are provided at a position near the center line L (see FIG. 5). It is formed so that the pressing force toward the protruding portion 24 is limited to a small value. Moreover, in order to prevent a deformation | transformation when pressing and cutting the opening part 11, the protrusion part reinforcement parts 23a and 24a (refer FIG. 7) extended | stretched from the press part 22, respectively are formed.

  As shown in FIG. 3, the first projecting portion reinforcing portion 23 a should prevent deformation when the first projecting portion 23 cuts the fracture portion 10 d (see FIG. 4) of the opening portion 11. The tip of the second protrusion 24 is formed longer than the first protrusion 23 downward (see FIG. 3).

<Mounting piece 20>
The mounting piece 20 is disposed so as to be in close contact with the surface of the lid plate 12 in parallel, and is attached to the lid plate 12 by the crimping portion 14 (see FIG. 6), and the lid plate side. It consists of a tab distal end movement adjusting portion 20d extending from the base end portion 20b of the fixing portion 20a to the tab side and connected to the tab side base end portion 20e. 20c shows the bending curve part of the tab base end part 20e. The tab tip movement adjusting portion 20d is configured to have a maximum pressing force after the tab 2 is rotated to some extent when the operation portion 21 of the tab 2 is raised from the cover plate 12 and the tip pressing portion 22 is moved backward. It has a length for operating the tab movement adjusting portion 20d so as to be in an equilibrium state and to perform the initial cutting of the breaking portion 10d.

  The mounting piece 20, particularly the tab tip movement adjustment portion 20 d, is bent so that the operation portion 21 can be lightly raised with a slight force and can remain stationary after being raised. The portion 20c is provided in the vicinity of the tab-side base end portion 20e, and is formed so as to have a gentle and substantially inclined shape from the curved portion 20c to the lid-plate-side base end portion 20b. It is possible to move and to have a play at the time of this rotation. In other words, when the operation portion 21 is caused, the rupture portion 10d is initially cut after the tab 2 is rotated to some extent and the pressing portion 22 moves backward, and the length of the tab tip movement adjustment portion 20d is arbitrarily adjusted. Thus, the play of rotation and the length of the pressing portion 22 and the backward movement distance can be varied.

  As shown in FIG. 11, by causing the operation portion 21 of the tab 2, the mounting piece 20 is bent into a crank-shaped cross section at the cover plate side base end portion 20 b and the tab side base end portion 20 e, and the first protrusion of the tab 2 The portion 23 moves backward, and the crank state at this time shows a balanced state. Further, as shown in FIG. 12, the first projecting portion 23 is balanced by causing the operating portion 21 of the tab 2. It cannot move backward due to the state, and shows the strongest pressing force at this time, and is pushed downward from the upper surface of the cover plate 12 with the cover plate side base end portion 20b as a fulcrum. At this time, the tab side base end portion The pressing force applied to 20e is formed with a curved portion 20g that follows the cutting line 20f that cuts the second protruding portion 24 side from the vicinity of the center line L of the pressing portion 22, and a terminal end small hole 20j that follows the curved portion 20g. Pressing force toward the second protrusion 24 It is greatly reduced, and the pressing force is more concentrated on the first protruding portion 23 side than the center line L of the pressing portion 22, and the opening 11 is pressed so that the initial cutting of the cut line 10d can be easily performed. Has been.

  Further, as shown in FIGS. 10 and 12, a straight concave groove 20k for positioning the curved portion 20c is formed in the middle between the tab attachment piece terminal hole 20h and one terminal hole 20j. By causing the operating portion 21 of the tab 2, the end portions of the terminal end child holes 20h and the child holes 20j, and the rear end portions and the front end portions of the concave groove portions 20k are connected in a polygonal line shape, so that a substantially triangular reinforcing zone 20n. As a result, tearing of the terminal end child hole 20h and the terminal end child hole 20j due to a strong cause of the operating portion 21 is prevented.

  As shown in FIGS. 1 and 4, the opening 11 is formed by a cut line 10 engraved on the surface of the cover plate 12, and the cut line 10 is a broken part when the opening 11 is pressed by the pressing part 22. 10d is formed by a groove having a U-shaped or V-shaped cross section that can be cut, and a curved portion 10d of the cut line 10 is formed by a groove having a U-shaped or V-shaped cross section that can be cut. The curved portion 10 a is located in front of the pressing portion 22 and is located in the vicinity of the peripheral edge of the cover plate 12. The cut line 10 extending from the curved portion 10a is located outside the tab 2 through the first protruding portion 23 of the tab 2 and extends in the direction of the operation portion 21 of the tab 2, and the end portion 10m of the cut line 10 The final end portion 10n is positioned in the direction of the operation portion 21 after the crimping portion 14.

  As shown in FIG. 4, the end portion 10 m of the cut line 10 is located at the end portion of the fractured portion 10 d where the cut line 10 is initially cut, and is located far behind the center line N of the crimping portion 14. Is formed.

  Further, as shown in FIG. 4, the final end portion 10 n of the cut line 10 is connected to the curved line portion 10 h and is formed so as to be positioned behind the crimping portion 14 at the center of the can lid. This is because the opening portion 11 is folded into the can through the folding groove 10 s until after the crimping portion 14 of the tab 2, and sinks into the can from the rear of the center portion of the tab 2 to the tip of the pressing portion. 2 is provided so as not to disturb the drinking mouth.

  Further, the tab 2 is attached to the opening portion 11 so that the first projecting portion 23 of the pressing portion 22 is positioned on the extended war of the fracture portion 10d substantially parallel to the center line L, and the curved portion 10e The first protrusion 23 is positioned outside the cut line 10 of the opening 11.

  When the operating portion 21 of the tab 2 is raised and the first projecting portion 23 moves backward to reach an equilibrium state, the first projecting portion 23 is located directly above or near the inside of the breaking portion 10d. It is a cut line portion of the opening portion 11 which is stamped at a position to be moved, and is initially cut by further causing the operation portion 21 to break the balanced state of the tab 2.

  That is, the first projecting portion 23 is provided at a position removed from the fractured portion 10d by providing the curved portion 10e, and when the first projecting portion 23 moves backward, the first projecting portion 23 passes through the curved portion 10e and passes through the broken portion 10d. It moves right above or near the inside.

As shown in FIGS. 3 and 4, the cover plate 12 and the opening 11 are provided with convex embosses 12a and 12b, a concave emboss 12e, and a convex emboss 11a for reinforcement. When the operation portion 21 of the tab 2 is raised due to the opening, the first protrusion 23 and the second protrusion 24 of the pressing portion 22 reinforce the cover plate 12 as a guide means that moves backward to an accurate position. A guide wall 12d is formed in the portion 12a, and a linear guide groove 13 is formed in the opening 11 to engage with the second protrusion 24.
Specifically, a guide groove 13 is formed on the side surface of the portion that contacts from the moving base end to the terminal end when the second projecting portion 24 moves backward, and the second projecting portion 24 is engaged with the guide groove 13. The backward movement of the pressing portion 22 is performed along the center line L. That is, the second protrusion 24 acts as a position holding member for reliably positioning the movement of the first protrusion 23 to the position just above or near the inside of the break line 10d. The end portion of the reinforcing convex portion 11 a is formed up to the front side of the curved line portion 10 h of the cut line 10, which is for surely folding up to the final end portion 10 n of the opening 11.

  On the surface of the cover plate 12, a folding groove 10 s is provided in a region of the tab in the direction of the manipulation part 21 so that the manipulation part 21 can be easily caused by a folding line extending in a direction perpendicular to the center line L. 10s is connected by a straight line from the final end 10n of the cut line to the end 10m, and a concave emboss 12e is formed so that the opening 11 can be easily folded into the can body at a substantially right angle.

Next, the opening operation of the beverage can configured as described above will be described. Embodiment 1. FIG.
(A) First operation stage (FIGS. 10 and 11)
Now, the tab 2 is attached so as to be in close contact with the upper surface of the opening 11 of the can lid 12 as shown in FIGS. 1 and 2 before the opening of the can. In order to open the can, the operating portion 21 of the tab 2 is raised upward from the can lid 12 as shown in FIG. The thin plate mounting piece 20 is bent in a crank shape via the curved portion 20c of the tab tip movement adjusting portion 20d connecting the lid plate side proximal end portion 20b and the tab side proximal end portion 20e, and is determined by the tab tip movement adjusting portion 20d. According to a predetermined length, the first projecting portion 23 and the second projecting portion 24 of the pressing portion 22 placed on the lid plate 12 are moved backward toward the rear operation portion 21, and this backward movement is in a balanced state. The retreat stops (tab 2 moves from the dotted line position shown in FIG. 11 to the practical position). At this time, the first projecting portion 23 passes through the cut line 10e and moves to a position directly above the fracture portion 10d or in the vicinity thereof.

  Up to this point (first operation stage), the force for causing the operating portion 21 can be easily caused lightly and easily by simply bending the thin mounting piece 20 with leverage. At this time, the second protrusion 24 of the pressing portion 22 engages with the guide groove 13 formed in the opening 11 and is accurately moved and guided in parallel along the center line L, and the first protrusion 23 Is also protected by the guide wall 12d, and the first projecting portion 23 is reliably positioned (guided) just above or near the inside of the breaking portion 10d of the cut line 10. The operation portion 21 of the tab 2 that has been raised is stationary as it is even if the fingertip is removed from the operation portion 21 because the tab tip movement adjustment portion 20d is bent. For this reason, it can be replaced with another fingertip, and a sufficient force can be applied to the initial cutting of the opening 11.

(B) Second operation stage Then, by causing the operation unit 21 to continue, the state shown in FIG. 12 is obtained. That is, the reverse balance state changes, and the pressing portion 22 has the lid plate side base end portion 20b as a fulcrum, and the fulcrum is a half or less from the center line L of the tab side base end portion 20e to the first projecting portion 23 side. The pressing force concentrates on the protruding portion 23 at one point, and is pressed so as to be pushed downward toward the breaking portion 10d, so that the initial cutting is easily performed from the portion of the breaking portion 10d of the opening portion 11.

(C) Third operation stage (FIGS. 13, 14 and 15)
And after cut | disconnecting the fracture | rupture part 10d of the opening part 11, the tab 2 raises the operation part 21 with respect to the cover plate 12 surface as shown in FIG. At this time, after the fracture portion 10d is initially cut, the tip portion 22b of the pressing portion 22 also comes into contact with the upper surface of the opening portion 11 to contribute to pressing of the opening portion 11, and the opening portion 11 extends across the width direction in the entire pressing portion. Pushed down. Subsequently, the tab 2 attached to the upper surface of the opening 11 is used as a child that causes the vertical direction to rise more than vertical, and is cut to the final end 10n of the cut line 10, and the final end 10m from the final end 10n through the folding groove 10s. The opening 11 is completely bent in the can 3 and a large opening 11 is obtained.
Of course, the first operation stage to the third operation stage can be performed continuously with one finger as in the prior art, and can be easily opened with only one hand.

Next, Embodiment 2 of the present invention is shown in FIGS. This is an example of applying the present invention to foodstuffs and other can lids.
16 and 17, reference numeral 1 denotes a can lid, which can be fixed to a can body 3 that accommodates seafood, fruits, etc., and is made of the same material as the can body, such as aluminum or tin plate. It is formed of a thin plate. The can lid 1 closes the upper opening of the can body 3 and has a cover plate 12 having an opening 11 that closes a region to be opened formed by the cut line 10, and a center line L of the cover plate 12. A tab 2 made of a thin plate attached to a tab caulking portion 14 in the vicinity of the inner peripheral edge of the lid is attached to the lid plate 12 via an attachment piece 20, and the tab 2 is caused to act as a fulcrum with the tab tip 22 b as a fulcrum. This is a can lid that raises the side base end portion 20b vertically and cuts the opening portion 11 from the lid plate 12 while raising it to the upper surface of the lid plate to complete the full opening of the can.

<Lid plate 12>
As shown in FIGS. 16 and 18, the semicircular curved portion 10j of the cut line 10 formed by the endless cut line 10 engraved on the surface of the cover plate 12 is located on the rear side in the radial direction from the tab tip 22b. The two curved portions 10b and 10c extending endlessly from the semicircular curved portion 10j in the direction of the tab distal end portion 22b while being positioned in the vicinity of the inner peripheral edge portion of the cover plate 12 are tab crimping portions 14 The cut line 10d which is located near the first center line L and is initially cut is connected in an endless manner by a straight line 10d extending from the curved portions 10b and 10c.

<Tab 2>
As shown in FIGS. 23 to 25, the tab 2 raises from the upper surface of the cover plate 12 by causing the opening 11 to open fully open.
The structure of the tab 2 is shown in FIGS. As shown in FIG. 20, the tab 2 is formed with a semicircular operation portion 21 for moving the tab 2 subsequent to the tab front end portion 22 b.

As shown in FIG. 21, the tip of the pressing portion 22 is formed with a tab tip 22b. That is, when the tab operating portion 21 is raised and the fractured portion 10d of the opening 11 is initially cut (see FIG. 22), the tab tip portion 22b is formed as a fulcrum on the surface of the lid plate 12.
Further, a gap is formed between the pressing portion reinforcing portion (22a) of the tip end portion (22b) and the lid plate (12) in order to facilitate the initial moving of the tab operating portion (21). .

  Now, when the can lid of such a configuration causes the operation portion 21 of the tab 2 from the state shown in FIGS. 16 and 17, the attachment piece 20 has a lid plate side base end portion 20 b and a tab side base end portion as shown in FIG. 11. According to the length of the tab tip movement adjusting portion 20d that connects the portions 20e, the tab tip portion 22b moves backward along the first center line L on the surface of the lid plate 12 to be in an equilibrium state. The steps so far are the same as the first operation stage (FIG. 11) of the first embodiment described above.

  And it will be in the state shown in FIG. 22 by raising the operation part 21 continuously continuously. That is, the balance state of retraction changes, the tab tip end portion 22b of the pressing portion 22 serves as a fulcrum, the force caused on the lid plate side base end portion 20b is concentrated at one point, and is pulled up vertically toward the upper surface of the lid plate 12, The initial cutting is easily performed from the broken portion 10d of the opening 11.

  And after cut | disconnecting the fracture | rupture part 10d of the opening part 11, as shown in FIG. 23, the tab 2 further raises the operation part 21 with respect to the cover plate 12 surface substantially perpendicularly. In this state, the tab 2 is continuously pulled up from the upper surface of the cover plate 12 (see FIG. 24), so that all the cut lines 10 of the opening 11 are torn and completely opened as shown in FIG.

  In this way, the difference from the conventional full open can lid is that the tab tip movement adjusting portion 20d makes it easy to move the tab 2 and only in one direction from the initial cutting upward to the lid plate. As the beverage can lid is opened, anyone can open it completely and smoothly without changing the direction of tearing. Therefore, it is not necessary to print an illustration on how to open on the upper surface of the lid plate.

  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 It can be opened and is considered to be part of the universal design in cans.

  It is a top view which shows the can lid | cover for drink cans concerning one Embodiment 1 of this invention.   FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1.   FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 1.   It is a top view which shows the can lid | cover of the can lid | cover for drink cans concerning Embodiment 1 of this invention.   It is a top view which shows the tab of the can lid | cover for drink cans concerning Embodiment 1 of this invention.   FIG. 6 is a cross-sectional view taken along line 6-6 in FIG.   FIG. 7 is a cross-sectional view taken along line 7-7 in FIG.   FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 5.   FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 5.   It is a top view which shows the state which raises a tab and the initial cutting of a fracture | rupture part starts in the 1st protrusion part of a press part.   FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 10, showing a state where the tab is caused to move backward and stationary in a balanced state.   12 is a cross-sectional view taken along line 12-12 in FIG.   FIG. 13 is a cross-sectional view taken along line 13-13 in FIG. 10 showing a state in which a tab is further raised after the initial cutting and the front end is bent from the final end.   FIG. 16 is a cross-sectional view taken along line 14-14 in FIG. 15 showing a state in which the tab is raised substantially perpendicularly to the can lid and folded into the can through the folding groove to the final end after the center line.   It is a top view which shows the state by which the can lid of the drink can concerning Embodiment 1 of this invention was opened.   It is a top view which shows the can lid | cover of the full open can concerning Embodiment 2 of this invention.   It is a 17-17 line arrow directional cross-sectional view in FIG.   It is a top view which shows the cover plate of the full open can concerning Embodiment 2 of this invention.   It is a 19-19 line arrow directional cross-sectional view in FIG.   It is a top view which shows the tab of the can lid | cover of the fluorheptane can concerning Embodiment 2 of this invention.   It is a 21-21 line arrow directional cross-sectional view in FIG.   It is sectional drawing which shows the state which caused the tab and pulled up the fracture | rupture part perpendicularly and made the initial cutting.   It is sectional drawing which shows the state which raised the tab perpendicularly | vertically with respect to the cover plate.   It is sectional drawing which shows the state which pulls up the link-shaped operation part of a tab and tears a break line.   It is a top view which shows the state by which the can lid of the full open can concerning Embodiment 2 of this invention was opened.

Explanation of symbols

1 can lid 2 tab 3 can body 10 cut line 10a, 10b, 10c curved part 10d broken part straight part 10e, 10f curved part 10g linear part 10h curved line part 10j semicircular curved part 10m terminal part 10n final end part 10s folding groove 11 opening 11a reinforcing empos 12 cover plates 12a and 12b, reinforcing emboss 12d guide walls 12e, 12f and 12g reinforcing concave emboss 13 initial cutting guide groove 14 tab caulking portion 20 tab mounting piece 20a cover plate side fixing portion 20b Cover plate side base end portion 20c Bending curve portion 20d Tab tip end movement adjusting portion 20e Tab side base end portion 20f Mounting piece cutting line 20g Cutting line curve portion 20h Tab mounting piece terminal hole 20j Tab mounting piece terminal hole 20k positioning straight concave groove 20n substantially triangular reinforcing zone 21 operation part 22 pressing part 22a pressing part reinforcing part 22b tab tip 23 first projecting part 23a first Out section reinforcement portion 24 second projecting portion 24a second projecting portions reinforcing portion L transverse center line N longitudinal center line

Claims (10)

The tab (2) attached to the upper surface of the opening (11) of the cover plate (12) through the foldable attachment piece (20) causes the operation portion (21) at the rear of the tab to be lightly raised, and the attachment piece (20). And the first projecting portion (23) of the pressing portion (22) at the front portion of the tab is moved backward to the fracture portion (10d) on the side surface of the opening portion (11). At the first protrusion (23) where the pressing force is more concentrated, the fractured portion (10d) is pressed to perform initial cutting, and subsequently folded into the can body while cutting from the side surface of the opening (11), In the can lid that completes opening of the opening (11) as it is without pulling back the operation part (21) of the tab (2) to the original position,
When the tab operation part (21) is lightly raised between the cover plate side base end part (20b) and the tab side base end part (20e) of the mounting piece (20), the tab rotates to some extent. The length region in which the cut tab can be kept as it is and the initial cut of the fracture portion (10d) is performed after the first protrusion (23) moves backward in the direction of the fracture portion (10d). A can lid characterized by forming a tab tip movement adjusting portion (20d). The tab (2) attached to the upper surface of the opening (11) of the cover plate (12) through the foldable attachment piece (20) causes the operation portion (21) at the rear of the tab to be lightly raised, and the attachment piece (20). , And the tab front end portion (22b) of the pressing portion (22) at the front portion of the tab is moved backward on the region outside the opening (11) of the lid plate (12) to move the tab front end portion (22b). ) And the cover plate side base end portion (20b) in a balanced state, the mounting piece (20) in which the maximum lifting force is more concentrated, and the front portion of the opening (11) is pulled up in the vertical direction, The fracture part (10d) of the line (10) is initially cut, and then the operation part (21) is vertically caused, the cut line curve part (10b, 10c) is cut, and the front part of the opening part (11) is torn. Subsequently, the operation part (21) is pulled up and the curved line part (10j) of the opening part (11) is In completing the can lid opening to full open cut Te,
When the tab operation part (21) is gently raised between the cover plate side base end part (20b) and the tab side base end part (20e) of the mounting piece (20), the tab rotates to some extent, After the tab tip (22b) has moved backward in the direction of the breaking portion (10d), the tab tip movement in the length region is adjusted so that the breaking portion (10d) is pulled up vertically so that the initial cutting of the breaking portion (10d) is performed. Leaving the part (20d),
A gap is provided between the pressing portion reinforcing portion (22a) of the tip portion (22b) of the pressing portion (22) and the lid plate (12) in order to facilitate the initial moving of the tab operating portion (21). A can lid characterized by being formed.   The can lid according to claim 1, wherein the first projecting portion (23) and the second projecting portion (24) of the pressing portion (22) in contact with the cover plate are formed in a reverse concave shape in cross section, and the second projecting portion A can lid characterized in that the second protrusion (24) is formed longer toward the lower side than the first protrusion (23) so that (24) engages with the linear concave groove (13) for positioning.   4. The can lid according to claim 1, wherein the mounting piece (20) is arranged so that the pressing force is more concentrated on the first protrusion (23) of the both end protrusions (23, 24). In the formed cutting line (20f), a terminal end child hole (20h) is formed in the vicinity of the tab side base end portion (20e) on the first projecting portion (23) side of the pressing portion (22), and A curved portion (20g) continuing to the tab side base end portion (20e) on the two projecting portions (24) side is provided with a terminal end child hole (20j) provided near the center line (L) of the tab side base end portion (20e). A can lid characterized by being formed up to).   The can lid according to any one of claims 1 to 4, wherein a curved part (20h) and a terminal part hole (20j) of the tab mounting piece (20) are provided in the middle of the curved part (20h). 20c), when the linear concave groove (20k) for positioning is formed and the operating portion (21) of the tab (2) is strongly caused, the distal end portions of the child holes (20h) and (20j), and the concave groove portion The rear end and the front end of (20k) are each connected in a polygonal line, and the mounting piece (20) is bent by a strong cause force so that the terminal end child holes (20h) and (20j) are not torn. A can lid characterized by being provided so as to form a substantially triangular reinforcing zone (20n).   The can lid according to any one of claims 1, 3 to 5, wherein the breaking portion (10d) is formed by a cut line (10) stamped on the cover plate (12), and the cut line (10 ) Is formed so that the first protrusion (23) is located outside the curved line (10e) and the curved line (10f) following the curved line (10e) before the tab (2) is raised. And when the tab (2) is raised and brought into an equilibrium state, the first protrusion (23) can be pressed lightly against the fractured part (10d) and cut immediately above the first protrusion. A can lid characterized in that the tip of (23) is formed at a position where it moves backward.   In the can lid according to any one of claims 1, 3 to 6, a terminal portion (10m) following the fracture portion (10d) of the cut line (10) forming the opening (11), It is formed so as to be located far behind the center line (N) of the caulking part (14), and the tab (2) is formed, so that the opening is completed as it is. Can lid.   The can lid according to any one of claims 1, 3 to 7, wherein the opening (11) is engaged with the second projecting portion (24) of the pressing portion (22), and the tab tip is retracted. A first projecting portion in which a linear concave groove (13) for guiding the movement in parallel along the center line (L) of the lid plate (12) is formed as a guide means, and the pressing portion (22) is moved backward. A can lid characterized in that the fracture portion (10d) in the vicinity of (23) is formed in a straight line parallel to the center line (L) so that the initial cutting can be accurately performed.   9. The can lid according to claim 1, wherein the opening (11) is greatly opened from the center toward the operation portion (21), and the tab (2) is on the tab side. The length from the base end part (20e) to the operation part (21) is formed shorter, and the outer diameter of the can lid (1) is formed to be smaller than the diameter of the conventional outer diameter. Can lid.   6. The can lid according to claim 2, wherein the attachment piece (20) is attached by a caulking part (14) near a fracture part (10 d) in the front part of the opening (11), and a tab (2 ), And the tab tip end portion (22b) is moved backward by the tab tip end adjustment portion (20d), causing the operation portion (21) to be greatly moved, and using the tab tip end portion (22b) as a fulcrum. The caulking portion (14) is pulled up vertically, the fractured portion (10d) is initially cut, and the tab (2) is pulled up as it is, and the opening (11) is fully opened. Can lid.

Images