WO2013062062A1

WO2013062062A1 - Can lid, and beverage can

Info

Publication number: WO2013062062A1
Application number: PCT/JP2012/077650
Authority: WO
Inventors: 小島　真一; 和紀池田; 健裕村岡; 哲夫柏崎; 明日美諏訪
Original assignee: 昭和アルミニウム缶株式会社
Priority date: 2011-10-28
Filing date: 2012-10-25
Publication date: 2013-05-02

Abstract

　In order to reduce the occurrence of bending which can happen when an opening is formed in a can lid, a tab (500) comprises an end section (55) and an other end section (56), and the other end section (56) being manipulated by a user causes a panel-side projection part (420), provided in a panel (400), to be pressed. More specifically, as a result of the other end section (56) being lifted up by the user, a second side edge (52), located on the side of the first end section (55), moves close to the panel (400), and then the second side edge (52) presses the panel-side projection part (420) provided in the panel (400). As a result, a rupture in the panel (400) is generated where a score line (410) has been formed, and an opening is formed in the panel (400). Therein, the part of the tab (500) which is the second side edge (52) for pressing the panel (400) is suspended above the panel (400) prior to the opening being formed in the panel (400).

Description

Can lid and beverage can

The present invention relates to a can lid and a beverage can.

There has been proposed a pull top that includes an opening piece formed in a container and a pull top ring supported at two points, and has a push bar that pushes down the opening piece along one longitudinal side edge of the opening piece and is provided on the pull top ring. (For example, refer to Patent Document 1).
In addition, a cylindrical barrel portion, a top plate portion that is attached with a tab operated by a user when an opening serving as a drinking mouth is formed, closes the upper end side of the barrel portion, and a lower end side of the barrel portion A beverage can having a bottom plate portion to be closed has been proposed (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 9-48435 JP-A-51-82188

The beverage cans currently widely used are often provided with a tab, and this tab is operated by the user when an opening serving as a drinking mouth is formed. By the way, when the tab is operated by the user, a load for bending the tab is applied to the tab, and the tab is bent depending on the magnitude of the load. Here, if the tab is reinforced such as by increasing the thickness of the tab, such bending is less likely to occur, but in this case, the manufacturing cost of the tab increases.
Further, when an opening serving as a drinking mouth is formed, a predetermined portion of the can lid is pressed by the tab, and this predetermined portion is pushed into the beverage can. Here, if the pressed portion directly pressed by the tab of the predetermined portion is formed so as to protrude from the surface of the can lid, the predetermined portion enters the beverage can. The amount can be increased.
By the way, when the pressed portion is provided so as to protrude from the surface of the can lid, the pressing portion that presses the pressed portion of the tab needs to be lifted from the can lid. Here, when it is going to form a press part so that it may float from the surface of a can lid, the thickness of a tab increases.
Further, when forming the pressing portion so as to float from the surface of the can lid, for example, a portion of the tab located between the fixing portion fixed by the rivet and the pressing portion is pressed from the fixing portion. The tab needs to be formed so as to gradually move away from the surface of the can lid toward the part. In other words, it is necessary to form the tab so that the gap formed between the surface of the can lid and the tab increases from the fixed portion toward the pressing portion. In this case, the tab has an inclination that leaves the can lid toward the pressing portion, with the vicinity of the portion where the rivet is provided as a bent portion. In this case, the bending rigidity of the tab is reduced as the bent portion is formed. Here, it is possible to improve the strength of the tab by reinforcing the outer periphery of the tab, such as curling, but in this case, the tab thickness may further increase, depending on the increased tab thickness The tab protrudes above the upper edge of the can lid.
Further, when an opening serving as a drinking mouth is formed, the tab is operated by the user, and the pressed portion pressed by the tab of the beverage can is pushed in the inner direction of the beverage can. Thereby, an opening is formed at a location where the pressed portion is located. Here, if a part of the tab is inserted deeply into the beverage can by providing a protruding piece with respect to the tab, the pushing amount of the pressed portion can be increased, and an opening serving as a drinking mouth Can be increased. By the way, when a protruding piece or the like is formed in this way, the tab is likely to be bent.
Further, when an opening serving as a drinking mouth is formed, this tab is operated by the user, and the pressed portion pressed by the tab of the beverage can is pushed toward the inside of the beverage can. Thereby, an opening is formed in the place where this pressed part is located. Here, if the rigidity of the tab is low, the tab is likely to be deformed, and the formation of the opening serving as a drinking mouth may be insufficient.
An object of the present invention is to make it difficult to cause bending of a tab that may occur when an opening is formed in a can lid.
Another object of the present invention is to make it difficult to increase the thickness of the tab, which can occur when the pressed portion pressed by the tab protrudes from the surface of the can lid.
Furthermore, the other object of this invention is to provide the can lid | cover etc. which can push deeply the part used as opening of a can lid | cover into the inside of a drink can, without producing the bending of a tab.
Still another object of the present invention is to increase the rigidity of a tab attached to a beverage can.

The can lid to which the present invention is applied includes a panel attached to the opening of the can body, an attached portion attached to the panel, an operated portion that is operated by a user and moves away from the panel, and the operated A body portion that rotates about the attached portion by movement of the portion in the away direction, and the body portion that is provided on a side farther from the panel than the attached portion and is spaced apart from the panel A tab having a tab provided with a pressing portion that advances toward the panel with the rotation and presses a predetermined portion of the panel.

Here, the protrusion part which protruded toward the said press part side can be formed in the site | part pressed by the said press part of the said panels.
Further, the main body portion of the tab is disposed so as to face the panel, and is disposed along one direction from the peripheral edge of the panel toward the center portion side of the panel, and the one of the main body portions. The pressing portion is provided on one end side in the direction, the operated portion is provided on the other end side in the one direction of the main body portion, and the one portion of the main body portion of the tab is in the one direction. A deformation process is performed on the region along the region, and the region protrudes toward the side opposite to the side on which the panel is provided.
The protrusion of the region forms a groove along the one direction in the main body, and the main body of the tab includes the one end in the one direction and the other end in the one direction. Each of the portions has a side, and the groove formed in the main body extends from the one side located at the one end to the other side located at the other end. It can be characterized by being provided.
Further, a notch may be formed in the other side located at the other end of the main body.
In addition, a portion of the panel that is pressed by the pressing portion is formed with a protruding portion that protrudes toward the pressing portion and has a top at the tip in the protruding direction. A score line is formed so as to surround the panel and urge the panel to break, and the protrusion is pressed by the pressing unit, so that the panel breaks at the score line and is surrounded by the score line. In this region, a piece formed by a part of the panel is formed, and the piece rotates with the connecting portion between the main body of the panel and the piece as a fulcrum. When the opening is formed at the position where the position is located and the one part is rotated to a predetermined position and the rotation of the main body portion of the tab is finished, it is more than the top of the outer surface of the protrusion. On the connection side As part of location is pressed by the pressing portion can be characterized by being composed.
Further, a portion of the panel that is pressed by the pressing portion is formed with a protruding portion that protrudes toward the pressing portion, and the panel is formed so as to surround the protruding portion, A score line that is formed in a shape that is a line object around the target axis is formed, and a score line that promotes breakage of the panel is formed, and the protrusion is pressed by the pressing part, so that the panel breaks at the score line. And a piece formed by a part of the panel is formed in a region surrounded by the score line, and the piece is used as a fulcrum with a connecting portion between the main body of the panel and the piece. An opening is formed at a position where the piece portion is rotated, and the connection portion between the main body portion and the piece portion of the panel is one of two regions opposed to each other across the axis of symmetry. Provided on the area side of Serial protrusions can be characterized in that the are disposed while the state provided by, the region side of one of the two regions.
In addition, the protruding portion is formed in a hemispherical shape, the pressing portion of the tab is configured by a side located at an edge of the tab, and a portion of the side pressing the protruding portion has a curvature. It can be characterized by having.

When the present invention is regarded as a beverage can, the beverage can to which the present invention is applied has a can body having an opening and a beverage contained therein, a can lid for closing the opening of the can body, The can lid includes a panel fixed to the can body, and a tab that is attached to the panel and operated by a user when an opening is formed in the panel. A mounted portion attached to the panel; an operated portion that is operated by a user and moves away from the panel; and a main body that rotates around the attached portion by movement of the operated portion in the away direction. , Provided on a side farther from the panel than the attached portion and arranged in a state of being separated from the panel, and advances toward the panel with the rotation of the main body, and the panel is predetermined. A pressing portion for pressing the part was a beverage can and a.

Here, the main body portion of the tab is formed in a plate shape and has a side at an end, the side of the main body functions as the pressing portion, and the panel is viewed from the front and When viewed from the side on which the tab is attached, the side that functions as the pressing portion is formed in a straight line.
The main body of the tab is arranged along one direction from the peripheral edge of the panel toward the center of the panel, and the side that functions as the pressing portion is in the one direction of the main body. Provided at one end, and the operated portion is provided at the other end in the one direction of the main body, and when the panel is viewed from the front and the side to which the tab is attached, The side that functions as the pressing portion is a straight line orthogonal to the one direction and is located closer to the operated portion than the straight line passing through the attached portion.

Further, a can lid to which the present invention is applied includes a panel attached to an opening of the can body, a tab arranged along one direction and operated by a user when the opening is formed in the panel, and the tab A first rivet that fixes the tab to the panel, a second rivet that is disposed at a position different from the first rivet in a direction intersecting the one direction, and that fixes the tab to the panel; It is a can lid provided with a pressed portion provided so as to protrude from the surface and disposed between the first rivet and the second rivet and pressed by the tab operated by a user.

Here, a score line is formed on the surface of the panel, and the score line is between the first rivet and the pressed part and between the second rivet and the pressed part. It is characterized by being provided so that it may pass.
Moreover, the tab side pressing part which presses the said to-be-pressed part among the said tabs can be arrange | positioned in the state spaced apart from the said panel, before the said tab is operated by the user.
Further, the tab may be formed in a plate shape, and may be formed in a state where a predetermined region along the one direction protrudes in a direction away from the panel.
In addition, a groove is formed in the tab by projecting the region of the tab away from the panel, and at least a part of the pressed portion is accommodated in the groove formed in the tab. The groove and the pressed part can be formed so as to be able to do so.
The region of the tab is provided from one end to the other end of the tab, and the region located from the one end to the other end protrudes in a direction away from the panel. It can be.

When the present invention is regarded as a beverage can, the beverage can to which the present invention is applied has a can body having an opening and a beverage contained therein, a can lid for closing the opening of the can body, The can lid is provided with a protrusion on the surface, a panel attached to the can body, and a tab that is operated by a user when an opening is formed in the panel and presses the protrusion of the panel; A first rivet disposed on one side of the projecting portion of the panel and fixing the tab to the panel; and the other side of the projecting portion of the panel. And a second rivet for securing the tab to the panel.

Here, the tab side pressing portion that presses the protruding portion of the tab is disposed in a state of being separated from the protruding portion and is disposed above the protruding portion before the tab is operated by the user. When the tab is operated by the user, the projection advances from above the projection toward the projection and presses the projection from above the projection.
The tab is arranged along one direction and has a side at one end in the one direction, and when the tab is operated by a user, the side is brought into contact with the protrusion. The side of the tab is formed so as to be along a direction orthogonal to the one direction when the panel is viewed from the front and the side to which the tab is attached. And is formed in a straight line.
The tab is arranged along one direction, and has one end at one of both ends in the one direction, the other end at the other end of the both ends, and a side at the one end. Provided, when the other end side of the tab is operated by the user, the side is brought into contact with the projecting portion to press the projecting portion, and the side of the tab allows the panel to be viewed from the front. And when it sees from the side in which the said tab is attached, it is formed in the state curved so that it might be dented toward the said other edge part side of the said tab.
Further, when the panel is viewed from the front and from the side on which the tab is attached, the side located at the one end of the tab is a straight line orthogonal to the one direction and the first side. It is characterized by being provided on the other end side of the tab from the straight line passing through one rivet and the second rivet.
In addition, when the panel is viewed from the front and from the side where the tab is attached, the linear side located at the one end of the tab is a straight line orthogonal to the one direction. Thus, the first rivet and the second rivet are provided so as to overlap with the straight line passing through the first rivet and the second rivet.
The protrusion may be formed in a state of protruding from the surface of the panel and hemispherical.
Further, the projecting portion is formed in a state of projecting from the surface of the panel and is formed in a conical shape.

Furthermore, the can lid to which the present invention is applied is provided with a protrusion on the surface, a panel attached to the opening of the can body, and disposed so as to face the surface of the panel and along one direction. It has a first side at one end in one direction and a second side at the other end, and a region along the one direction is formed to project away from the panel, When the first side is lifted by the user, the second side advances toward the projecting portion of the panel and hits the projecting portion, and the panel is moved by the second side. It is a can lid provided with the tab to press.

Here, the region of the tab is arranged from the first side to the second side, and the region arranged from the first side to the second side is the panel. It protrudes toward the direction away from.
In addition, the portion of the second side that contacts the protruding portion is disposed at a position away from the protruding portion before the first side of the tab is lifted by the user and It is arranged in a state of being separated from the panel, and the first side of the tab is lifted by the user so as to move closer to the panel and come into contact with the protruding portion of the panel. it can.
Furthermore, when the region of the tab protrudes in a direction away from the panel, a groove along the one direction is formed in the tab, and the width of the groove is larger than the diameter of the protrusion. As described above, the grooves and the protrusions can be formed.
Further, when the region of the tab protrudes in a direction away from the panel, the tab side protrusion that is provided along the one direction on the one surface side of the tab and protrudes from the one surface. The tab is rotated around a predetermined position by lifting the first side by the user, the front and back are reversed, and the tab is reversed by reversing the front and back of the tab. The one surface comes to face the panel, and a part of the tab side protruding portion formed on the one surface side faces the peripheral edge of the panel, and the tab side protruding portion The protruding amount of the one part from the one surface is smaller than the protruding amount of one end portion in the longitudinal direction of the tab side protruding portion and the protruding amount of the other end portion in the longitudinal direction of the tab side protruding portion. When Rukoto can.

When the present invention is regarded as a beverage can, the beverage can to which the present invention is applied has a can body having an opening and a beverage contained therein, a can lid for closing the opening of the can body, The can lid is provided with a protrusion on the surface, and is disposed so as to face the surface of the panel and along one direction, the panel being attached to the opening of the can body. A first side at one end in the direction and a second side at the other end, and a region along the one direction is formed to project away from the panel, When the first side is lifted by the user, the second side advances toward the protruding portion of the panel and hits the protruding portion and presses the panel at the second side. A beverage can comprising a tab.

Here, when the panel is viewed from the front and from the side on which the tab is attached, the second side of the tab is formed along a direction orthogonal to the one direction. It can be characterized by being formed in a straight line.
Further, a rivet for fixing the tab to the panel is further provided, and when the panel is viewed from the front and the side on which the tab is attached, the second side of the tab is in the one direction It is characterized by being provided on the first side side with respect to a straight line orthogonal to the straight line passing through the rivet.
Furthermore, a cutout is formed in the first side of the tab.

Further, the can lid to which the present invention is applied is arranged so as to be along the surface of the panel attached to the opening of the can body and along the surface of the panel and along one direction, and at one end in the one direction. A region having a first side and a second side at the other end, and located between the first side and the second side, along the one direction The region is formed so as to protrude in a direction away from the panel or in a direction approaching the panel, and the second side is advanced toward the panel by lifting the first side by the user. It is a can lid provided with the tab which presses the said panel.
Here, the region of the tab is provided so as to be along the one direction, and is located in a central portion of the tab in a direction intersecting with the one direction. The rigidity of the central part of the tab in the direction can be increased.
In addition, the protrusion of the region of the tab extends from one surface of the first surface facing the panel and the second surface, which is the surface opposite to the first surface, to the other surface. If it is characterized by being formed by being pressed and bent on the tab, the region of the tab can be formed more easily.

From another point of view, the can lid to which the present invention is applied is arranged along the surface of the panel attached to the opening of the can body and the first side at one end in the longitudinal direction. A second side edge at the other end and a deformation process is applied to a region located between the first side edge and the second side edge and the second side edge is folded along the longitudinal direction. A streak is formed, and the first side is lifted by the user so that the second side is advanced toward the panel and a tab that presses the panel is a can lid.
Here, if the tab has a protruding piece protruding from the second side, and the fold line is also formed on the protruding piece, the bending rigidity of the protruding piece is increased. Will be able to.
Further, if the fold line formed along the longitudinal direction is provided in a plurality of different locations in the direction intersecting the longitudinal direction, the bending rigidity of the protruding piece can be further increased. In addition, the tab can be prevented from being twisted when the first side is lifted by the user.

Further, when the present invention is regarded as a beverage can, the beverage can to which the present invention is applied is arranged so that the can body in which the beverage is accommodated, a panel attached to the opening of the can body, and the surface of the panel. The first side is disposed at one end in the longitudinal direction, the second side is disposed at the other end, and the second side is lifted by the user. A tab main body portion whose side is advanced toward the panel, and is provided so as to protrude from the second side of the tab main body portion, and its outer peripheral edge is folded, and the tab body portion 1 is a beverage can provided with a protruding piece that approaches the panel and presses the panel when the side of 1 is lifted by the user.
Here, the projecting piece is arranged along the longitudinal direction, and has a first side along the longitudinal direction at one end in a direction perpendicular to the longitudinal direction, and is orthogonal to the longitudinal direction. A second side extending along the longitudinal direction at the other end in the direction to be applied, and the folding of the protruding piece is performed at least on the first side and the second side. If so, the protruding piece can be prevented from bending when the first side is lifted by the user.
Further, if the folding process of the projecting piece is also performed on the tip of the projecting piece, the tip of the projecting piece that can concentrate stress when the first side is lifted by the user. The rigidity of can be increased.

ADVANTAGE OF THE INVENTION According to this invention, the bending of the tab which can occur when forming an opening in a can lid can be made hard to produce.
Moreover, according to this invention, it can be made hard to produce the increase in the thickness of the tab which may occur when the to-be-pressed part pressed by the tab protrudes from the surface of a can lid.
Furthermore, according to the present invention, it is possible to provide a can lid or the like capable of deeply pushing the opening portion of the can lid into the inside of the beverage can without causing bending of the tab.
Furthermore, according to the present invention, the rigidity of the tab attached to the beverage can can be increased.

It is a figure for demonstrating the drink can to which this Embodiment is applied. It is the figure which showed the other structural example of the tab. It is a figure for demonstrating the other structural example of a protrusion part. It is the figure which showed the state of the panel before a tab was attached. It is a figure for demonstrating the fracture | rupture of the panel which arises when a tab is operated by the user. It is the figure which showed the motion of the tab when a tab is operated by the user. It is the figure which showed the motion of the tab when a tab is operated by the user. It is the figure which showed the comparative example of the drink can. It is the figure which showed the state of the tab when the tab in a comparative example was operated by the user. It is a figure at the time of seeing the state at the time of a tab pressing a protrusion part from the side. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the tab. It is the figure which showed the panel and tab in a comparative example. It is a figure at the time of seeing a tab and a panel from the side. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the tab. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the drink can. It is the figure which showed the other structural example of the tab.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a diagram for explaining a beverage can 100 to which the present embodiment is applied. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow IB direction of the figure (A). . FIG. 6C is a view when the tab 500 is viewed from the direction of the arrow IC in FIG.

A beverage can 100 according to the present embodiment, as shown in FIG. 2A, has a container body (can body, can body) 200 having an opening at the top and a bottom at the bottom and formed in a cylindrical shape, A can lid 300 is attached to the opening of the container body 200 and closes the opening of the container body 200. The beverage can 100 is filled (contained) with beverages such as soft drinks, carbonated drinks, and alcoholic drinks.

The can lid 300 has a panel 400 that is formed in a disk shape and functions as a substrate. Here, the panel 400 has a score line (cut line, weakened line) 410 formed on the surface thereof. Further, a panel-side protruding portion 420 that is formed in a hemispherical shape and protrudes toward the outer side of the beverage can 100 is formed on the surface of the panel 400 in the region surrounded by the score line 410 of the panel 400. ing. The panel 400 is attached with a tab 500 that is disposed so as to face the panel 400 and is operated by the user. Here, the tab 500 is provided so as to overlap an area surrounded by the score line 410 in the panel 400. For this reason, in this embodiment, the part used as the drinking mouth of the panel 400 becomes difficult to get dirty.

In the configuration of the present embodiment, for example, even if the beverage can 100 has a small diameter of about 2 to 3 cm, the area of the opening can be secured, and the size of the tab 500 can be secured. . Currently, in beverage cans that are widely distributed (beverage cans with oval or rectangular tabs attached), there are tab spaces for installing tabs and opening spaces for forming openings. It is necessary to secure two spaces. For this reason, when the diameter of the beverage can is reduced in the beverage cans currently in circulation, it is necessary to reduce either or both of the tab space and the opening space. On the other hand, in the configuration of the present embodiment, the tab space and the opening space are provided so as to overlap each other, so that the diameter of the beverage can 100 can be reduced without reducing the tab space and the opening space. Can do.

Although not described above, the panel 400 (can lid 300) is fixed to the container main body 200 by so-called winding, and as shown in FIG. A winding portion 250 is formed at the joint portion. Here, the winding portion 250 is formed in an annular shape. The tightening portion 250 is arranged above the surface of the panel 400 (the surface to which the tab 500 is attached).

Here, the tab 500 has one end portion 55 and the other end portion 56, and the other end portion 56 side is operated by the user, whereby the panel side protruding portion 420 as an example of the pressed portion provided in the panel 400. Press. More specifically, when the other end 56 side is lifted by the user, the one end 55 side approaches the panel 400, and the one end 55 side presses the panel side protrusion 420 provided on the panel 400. Thereby, the panel 400 is broken at a position where the score line 410 is formed, and an opening is formed in the panel 400. Note that the can lid 300 in the present embodiment is a so-called steion-type can lid that maintains the state in which the tab 500 is attached to the panel 400 even after the opening serving as the drinking mouth is formed in the panel 400.

The tab 500 will be further described. The tab 500 according to the present embodiment is, as shown in FIG. 5A, in one direction (hereinafter, referred to as “the outer periphery” of the panel 400 from the substantially central portion of the panel 400 formed in a disk shape). This one direction is sometimes referred to as “tab arrangement direction”. Further, the tab 500 has the one end 55 on the center side of the panel 400 and the other end 56 on the outer peripheral edge of the panel 400.

The tab 500 is arranged on the other end 56 side of the tab 500 and is arranged along a direction orthogonal (crossing) to the tab arrangement direction (longitudinal direction of the tab 500), It has the 2nd side 52 arrange | positioned along the direction orthogonal to a tab arrangement | positioning direction while being arrange | positioned at the one end part 55 side of the tab 500. FIG. Here, the second side 52 is disposed in a state of being separated from the panel-side protrusion 420 and is disposed above the panel-side protrusion 420. Further, the tab 500 has a third side 53 arranged along the tab arrangement direction, and a fourth side arranged similarly along the tab arrangement direction and arranged on the side opposite to the third side 53. Side 54. In addition, the 3rd side 53 and the 4th side 54 are formed in the curved state so that it may mutually approach.

Further, as shown in FIG. 6A, the tab 500 includes a portion where the third side 53 and the second side 52 intersect, and the fourth side 54 and the second side 52. A projecting piece 57 that functions as an attached portion is provided at a location where the crossing and. Here, each of the two provided projecting pieces 57 is provided so as to project from the second side 52. If it adds, it will be provided so that it may protrude in the opposite side to the side in which the 1st side 51 is provided. More specifically, the two provided projecting pieces 57 are arranged so as to be shifted from each other in a direction orthogonal to the tab arrangement direction. A gap is formed between the two protruding pieces 57. In the present embodiment, the protruding piece 57 of the tab 500 is attached to the panel 400 by the rivet 260.

In the present embodiment, two rivets 260 are provided so as to correspond to the two protruding pieces 57 provided. Furthermore, in the present embodiment, the two rivets 260 are arranged at different positions in the direction orthogonal (crossing) to the tab arrangement direction, and the panel-side protrusion 420 is provided between the two rivets 260. . In other words, in the present embodiment, rivets 260 are provided on both sides of the panel-side protruding portion 420. In the present embodiment, a panel-side protrusion 420 is provided between the two rivets 260, and between the one rivet 260 and the panel-side protrusion 420, and between the other rivet 260 and the panel-side protrusion 420. A score line 410 passes between the two.

Furthermore, in the tab 500 according to the present embodiment, as shown in FIGS. 4A and 4B, deformation processing (pressing processing) is performed on the center portion of the tab 500 (the center portion in the direction orthogonal to the tab arrangement direction). The tab side protrusion part 520 which protruded from the base 510 as an example of a main-body part is provided in this center part. In addition, in the present embodiment, an elongated region arranged along the tab arrangement direction in the base portion 510 of the tab 500 is formed so as to protrude in a direction away from the panel 400, and by this protrusion, the tab 500 is formed. On the other hand, the tab side protrusion 520 is formed. Here, this tab side protrusion part 520 is provided so that it may protrude toward the direction away from the panel 400, and is arrange | positioned along the tab arrangement | positioning direction. Further, the tab-side protruding portion 520 is provided from the second side 52 to the first side 51 of the tab 500. Note that the tab-side protruding portion 520 may be configured to protrude from the base portion 510 of the tab 500 in a direction approaching the panel 400.

In addition, when the tab side protrusion part 520 is formed to the 1st side 51 in this way, it becomes easy for a user to operate the tab 500. FIG. In the present embodiment, when the tab 500 is operated, the other end 56 side of the tab 500 is lifted by the user. However, if the tab-side protrusion 520 is formed up to the first side 51, A gap between one side 51 and the panel 400 is formed. In this case, the user can put a finger into the gap, and the user can easily lift the other end 56 side of the tab 500.

The tab-side protruding portion 520 is formed by pressing the base portion 510 from one surface side of the base portion 510 formed in a flat plate shape toward the other surface side, and the tab-side protruding portion 520 is formed on the other side. It is provided so as to protrude from the surface. More specifically, in this embodiment, as a result of the tab-side protruding portion 520 being formed, a state in which a groove 530 (see FIG. 1B) along the tab arrangement direction is formed on the one surface side of the tab 500 is formed. It has become. In other words, in the tab 500 according to the present embodiment, a groove 530 along the tab arrangement direction is formed on the surface opposite to the surface on which the tab-side protruding portion 520 is provided.

In the tab 500 according to the present embodiment, the tab side protruding portion 520 (groove 530) along the tab arrangement direction is formed in this way. For this reason, the bending rigidity of the tab 500 in this embodiment is increased. More specifically, when the opening is formed in the panel 400, the other end 56 side of the tab 500 is lifted by the user as described above. At this time, the tab 500 has a load for bending the tab 500. Will act. Here, in the present embodiment, the tab side protruding portion 520 is formed as described above, and the bending rigidity of the tab 500 is increased. For this reason, in this embodiment, even if the load which is going to bend the tab 500 acts on the tab 500, the bending of the tab 500 becomes difficult to occur.

Although not described above, in this embodiment, the width of the groove 530 formed in the tab 500 is larger than the diameter of the panel-side protruding portion 420 formed in the panel 400. That is, when the second side 52 presses the panel-side protruding portion 420 to form an opening, a large stress is received around the bent portion of the protruding piece 57 of the tab 500. At this time, the groove 530 of the tab 500 has rigidity due to the curved shape, but the extension extending from the groove 530 to the protruding piece 57 is planar, and thus the rigidity is inferior. That is, as the shape of the tab 500, it is desirable that the length of the extension portion having inferior rigidity is shorter. At this time, since the position of the protruding piece 57 does not change, the extension portion becomes short if the width of the groove 530 is large, and the extension portion becomes long if the width of the groove 530 is small. Therefore, it is desirable to make the width of the groove 530 formed in the tab 500 larger than the diameter of the panel side protrusion 420 formed in the panel 400.
Moreover, in this embodiment, as shown to the same figure (A) and (B), the width | variety of the groove | channel 530 formed in the tab 500 is made larger than the diameter of the panel side protrusion part 420 formed in the panel 400. FIG. Thus, a part of the panel-side protrusion 420 formed on the panel 400 is accommodated inside the groove 530. Here, for example, when the width of the groove 530 is small, it is difficult to store the panel-side protruding portion 420 inside the groove 530, and the tab 500 and the panel-side protruding portion 420 interfere with each other. Such interference can be avoided by retracting the second side 52 to the other end 56 side in the drawing (downward in FIG. 1A). If the trajectory of the second side 52 when the tab 500 is rotated passes near the center of the panel side protrusion 420, the side 52 pushes the panel side protrusion 420 from the top into the can. The panel-side protrusion 420 can be bent deeply into the can. However, when the second side 52 is retracted toward the other end 56 in the drawing (downward in FIG. 1A), the locus of the second side 52 passes through the side surface of the panel-side protrusion 420. Since it does not pass near the center of the panel side protrusion 420, the panel side protrusion 420 cannot be bent deeply into the can. In this case, the opening formed in the panel 400 becomes small.

As shown in FIG. 5C, the amount of protrusion of the tab side protrusion 520 from the base 510 is not constant (the depth of the groove 530 is not constant), and the tab 500 of the tab side protrusion 520 is not. The protrusion amount of the part located between the one end part 55 and the other end part 56 (hereinafter sometimes referred to as “intermediate part”) is larger than the protrusion amount at the one end part 55 and the protrusion amount at the other end part 56. It is getting smaller. Here, when the tab 500 is operated by the user and the tab 500 is rotated by 180 degrees (when inverted) (details will be described later), the intermediate portion faces the tightening portion 250 positioned on the periphery of the panel 400. It becomes like this. At this time, if the protruding amount of the intermediate portion is small, the tab 500 can be rotated more. In this case, the opening formed in the panel 400 can be made larger. In addition, in this embodiment, although the case where the tab 500 opposes the winding-up part 250 is illustrated, when the diameter of the drink can 100 is large, the 1st side 51 side of the inverted tab 500 is in the periphery of the panel 400. In this case, the inverted tab 500 does not face the peripheral edge of the panel 400.

In addition, the tab side protrusion part 520 (groove 530) formed in the tab 500 is not restricted to the form demonstrated above.
For example, as shown in (A) of FIG. 2 (a diagram showing another configuration example of the tab 500), the top portion 521 of the tab-side protruding portion 520 is flattened and two sides extending downward from the top portion 521 are provided. A portion 522 can be provided. Here, in the case of this form, a corner | angular part is formed in each of the location where the flat top part 521 and the side part 522 cross. In addition, in the case of this form, two corners are formed. Each angle of the two corners can be the same angle, or can be different as shown in FIG.

Further, as shown in FIG. 2C (see also FIG. 1B), the tab-side protruding portion 520 shown in FIG. 1 is a portion where the top portion 521 and one side portion 522 intersect, Although it was the shape which gave the curvature in the location which the other side part 522 crosses, as shown in FIG.2 (D), a curvature is provided to the whole tab side protrusion part 520, and the cross-sectional shape of the tab side protrusion part 520 Can be semicircular. Moreover, in the tab side protrusion part 520 shown in FIG. 1, as shown in FIG.2 (C), the curvature of the location where the top part 521 and one side part 522 cross, and the top part 521 and the other side part 522 are obtained. Although the curvature of the place where cross | intersects is the same, as shown to FIG.2 (E), a curvature can also be varied.

Further, as shown in FIG. 2 (F), the top portion 521 of the tab-side protruding portion 520 can be formed in a flat shape, and irregularities along the tab arrangement direction can be formed on the top portion 521. If it adds, the cross-sectional shape of the top part 521 of the tab side protrusion part 520 can also be made into a waveform. Moreover, the protrusion part 523 along a tab arrangement direction can be provided with respect to the top part 521 (refer the same figure (G)), and the recessed part 524 along the tab arrangement direction can also be provided with respect to the top part 521 (same as above). (Refer figure (H)). Moreover, as shown to the same figure (I) and (J), the top part 521 of the tab side protrusion part 520 can also be made into V shape in cross-sectional shape. In addition, the figure (I) shows the case where it makes it V shape by making the top part 521 protrude outside, and the figure (J) shows the case where it makes it V shape by making the top part 521 protrude inside. Yes.

Further, the panel-side protruding portion 420 formed on the panel 400 can also have a configuration other than the configuration described in FIG. The panel-side protruding portion 420 shown in FIG. 1 is as viewed from the side as shown in FIG. 3A (a diagram for explaining another configuration example of the panel-side protruding portion 420). Although the cross-sectional shape is hemispherical, the panel-side protruding portion 420 can also be formed in a conical shape, for example, as shown in FIG. In addition, although illustration is abbreviate | omitted, the panel side protrusion part 420 is not restricted to hemispherical shape, a cone shape, etc., It can also be formed in column shape (cylindrical shape) or prismatic shape. Moreover, it can also be set as the shape which mounted the said hemisphere and cone on the upper surface of a cylinder.

Referring to FIG. 1 again, the tab 500 will be further described. As shown in FIG. 1A, a notch 51A is formed in the first side 51 of the tab 500. Here, in the present embodiment, when the tab 500 is operated and an opening is formed in the panel 400, the other end portion 56 of the tab 500 that functions as the operated portion is lifted by the user. In other words, the user's finger is put into a gap formed between the first side 51 of the tab 500 and the panel 400, and the other end 56 of the tab 500 is lifted. At this time, if the cutout 51 </ b> A is formed in the first side 51, it becomes easy to put a finger into the gap, and the user can easily lift the other end 56 side of the tab 500. More specifically, in the configuration according to the present embodiment, the winding tightening portion 250 is positioned near the first side 51 and it is difficult to put a finger into the gap. For this reason, in the present embodiment, the notch 51A is formed so that the user's finger can easily enter the gap.

FIG. 4 is a view showing a state of the panel 400 before the tab 500 is attached.
In the panel 400 in the present embodiment, the score line 410 is formed on the surface as described above. Furthermore, in the area | region enclosed by the score line 410 of the panel 400, the panel side protrusion part 420 which was formed in hemispherical shape and protruded toward the outer side of the drink can 100 as mentioned above is formed.

Here, the score line 410 is formed so as to surround a portion of the panel 400 that is pressed by the tab 500 (a portion where the panel-side protruding portion 420 is provided). The score line 410 is formed by a groove formed on the surface of the panel 400 and plays a role of inducing breakage of the panel 400. In addition, the score line 410 serves to partially weaken the strength of the panel 400, and when the panel 400 is pressed by the tab 500, the score line 410 breaks the panel 400.

Further, the surface of the panel 400 is crushed after being passed through a through hole (not shown) formed in the protruding piece 57 (see FIG. 1A) of the tab 500, and the rivet 260 (FIG. 1A). A first protrusion 431 and a second protrusion 432 are provided. Further, in the panel 400 of this embodiment, an annular reinforcing bead 440 that reinforces the panel 400 in a region surrounded by the score line 410 and on the outer peripheral edge side of the panel 400 with respect to the panel side protrusion 420. Is provided.

Here, the score line 410 will be further described. The score line 410 of the present embodiment is formed in a substantially annular shape. The score line 410 has a starting point 411 at which the break of the panel 400 is first started and an end point 412 at which the break of the panel 400 ends. Note that there is a score line non-forming part 413 in which the score line 410 is not formed between the start point 411 and the end point 412.

Here, when the tab 500 is operated by the user and the pressing of the panel-side protruding portion 420 by the tab 500 is started, a portion of the panel 400 located on the inner side of the score line 410 (hereinafter referred to as “inner portion”). The portion where the rivet 260 (see FIG. 1A) of the panel 400 is located is pulled toward the outside of the beverage can 100 at this time. It is done. As a result, a shearing force is applied to the score line 410, and the panel 400 is broken at a position where the score line 410 is provided.

Here, the breakage of the panel 400 will be described in detail with reference to FIG.
FIG. 5 is a diagram for explaining breakage of the panel 400 that occurs when the tab 500 is operated by the user. In addition, illustration of the tab 500 is abbreviate | omitted in this figure.
When the tab 500 is operated by the user and the pressing of the panel-side protrusion 420 by the tab 500 is started, the panel 400 is first broken at the start point 411 of the score line 410 as shown in FIG. The panel 400 breaks at a portion located between one rivet 260 (hereinafter, this rivet is referred to as a “first rivet 260A”) and the panel-side protrusion 420. Thereafter, as shown in FIG. 5B, the breakage of the panel 400 proceeds along the periphery of the circular panel-side protruding portion 420.

Next, the panel 400 is broken at a portion located between the other rivet 260 (hereinafter, this rivet is referred to as “second rivet 260B”) and the panel-side protruding portion 420. Finally, as shown in FIG. 3C, the breakage of the panel 400 proceeds along the outer peripheral edge of the reinforcing bead 440, and the breakage of the panel 400 ends at the end point 412. Here, in this embodiment, as the breakage of the panel 400 proceeds from the start point 411 to the end point 412 of the score line 410, the inner portion enters the inside of the beverage can 100. In other words, the inner portion enters the inside of the beverage can 100 while rotating, with the location where the score line non-forming portion 413 is provided as the rotation center. Thereby, an opening is formed in the location where the inner site | part of the panel 400 was located.

In addition, although description was abbreviate | omitted above, the score line non-formation part 413 is arrange | positioned in the vicinity of the panel side protrusion part 420. FIG. In other words, the score line non-forming part 413 is arranged in the vicinity of a portion of the panel 400 that is pressed by the tab 500. For this reason, in this embodiment, compared with the case where the panel side protrusion part 420 is arrange | positioned in the location away from the score line non-formation part 413, the amount of penetration of the inner site | part to the inside of the drink can 100 increases, and a panel The opening formed in 400 becomes larger.

In the present embodiment, the panel-side protrusion 420 formed on the panel 400 is disposed in a state of being brought close to the first protrusion 431 (first rivet 260A) by a dimension L as shown in FIG. Yes. More specifically, the panel-side protrusion 420 is disposed on the first protrusion 431 side of the midpoint of a straight line passing through the first protrusion 431 (first rivet 260A) and the second protrusion 432 (second rivet 260B). Yes. More specifically, the panel-side protruding portion 420 is closer to the first protrusion 431 of the score line 410 and the panel side than the portion of the score line 410 located between the second protrusion 432 and the panel-side protruding portion 420. It arrange | positions in the state brought close to the site | part located between the protrusion parts 420. FIG. For this reason, in this embodiment, when the pressing of the panel 400 by the tab 500 is started, the panel 400 is first broken on the first protrusion 431 side as described above.

Next, the movement of the tab 500 when the tab 500 is operated by the user will be described.
6 and 7 are diagrams illustrating the movement of the tab 500 when the tab 500 is operated by the user.
When the user starts operating the tab 500, first, the user's finger is inserted between the other end portion 56 (first side 51) of the tab 500 and the panel 400 shown in FIG. Is done. As described above, the notch 51A is formed in the first side 51 of the tab 500, so that the user can easily insert a finger between the other end 56 of the tab 500 and the panel 400. ing.

Thereafter, as shown in FIG. 5B, the other end 56 side of the tab 500 is lifted by the user. When this lifting is performed, the tab 500 is bent at the base of the protruding piece 57 and the other end 56 side of the tab 500 is displaced upward as shown in FIG. In addition, the second side 52 located on the one end 55 side of the tab 500 advances toward the panel-side protruding portion 420 formed on the panel 400 and hits the panel-side protruding portion 420, so that the second side 52 Presses the panel-side protrusion 420.
In the present embodiment, the second side 52 is formed in a straight line as shown in FIG. 6A, but the second side 52 is different from that shown in FIG. A notch can also be provided as shown in FIG. In addition, the second side 52 can be formed in a curved state so as to be recessed toward the side where the first side 51 is located. When the second side 52 is formed in a straight line, the second side 52 and the panel-side protruding portion 420 are in point contact, and stress is applied to the portion of the tab 500 that contacts the panel-side protruding portion 420. Concentration and deformation may occur at the contact point. When the notch is formed as shown in FIG. 13, the tab 500 and the panel-side protruding portion 420 are in line contact, and the stress concentration can be avoided. In addition, when the 2nd side 52 is formed in linear form, the tab 500 and panel side protrusion can also be made into the planar shape the location where the 2nd side 52 of the panel side protrusion part 420 contacts. The part 420 can be brought into contact with the line contact. Although not described above, in the present embodiment, when the angle of the tab 500 with respect to the panel 400 is about 30 °, the second side 52 comes into contact with the panel-side protruding portion 420. ing.

When the second side 52 presses the panel-side protrusion 420, the panel 400 breaks at the score line 410 as described above. As a result, the inner portion enters the inside of the beverage can 100, and an opening is formed in the panel 400. Thereafter, a further operation of the tab 500 is performed by the user, and as shown in FIGS. 7A and 7B, the tab 500 (the base 510 of the tab 500) is rotated about 180 ° (inverted state). Become.

In this state, the second side 52 of the tab 500 enters the inside of the beverage can 100 through the opening formed in the panel 400 as shown in FIG. Is further pressed. And in this case, it will be in the state which the inner side part approached further deeply into the inside of beverage can 100.
More specifically, when the panel 400 does not have the panel-side protruding portion 420, the second side 52 of the tab 500 presses and opens the panel by a depth that has entered the can, so that a large opening cannot be expected. . However, providing the panel-side protrusion 420 on the panel 400 provides an opening having a depth obtained by adding the height of the panel-side protrusion 420 to the depth at which the second side 52 of the tab 500 has entered the can. . As can be seen from FIGS. 7A and 7B, the second side 52 of the tab 500 initially contacts and presses against the top of the panel-side protruding portion 420 to start opening. As the opening piece advances, the opening piece is inclined, so that the second side 52 and the top portion of the panel-side protruding portion 420 do not come into contact with each other. Therefore, in this embodiment, the panel-side protruding portion 420 and the tab of the panel 400 can be kept pressed so that the portion in contact with the second side 52 can move to the side-side portion of the panel-side protruding portion 420. 500 second side edges 52 are arranged. As a result, the opening angle is further increased and a large opening is formed.
Thus, in this embodiment, the panel side protrusion part 420 is formed in the panel 400, and an inner site | part approachs deeply into the inside of the drink can 100 by providing this panel side protrusion part 420. FIG. In this case, the opening in which the panel 400 is formed becomes larger.

More specifically, in the present embodiment, as shown in FIG. 7B, when the reversal of the tab 500 (rotation of the tab 500 by about 180 °) is finished, the top portion of the outer surface of the panel-side protrusion 420 is formed. The second side 52 of the tab 500 is in contact with a part located closer to the score line non-forming part 413 (a connection part between the inner part and the main body part of the panel 400) than 420A, and the score is higher than the top part 420A. This part located on the non-line forming part 413 side is configured to be pressed. Thereby, in this embodiment, when an inner site | part (an example of a piece part) rotates using the connection part of this inner site | part and the main-body part of the panel 400 as a fulcrum, an inner site | part penetrates deeply into the inside of the beverage can 100, The opening angle increases. Here, when only the top portion 420 </ b> A of the panel-side protruding portion 420 is pressed by the second side 52 of the tab 500, the amount of the inner portion entering the beverage can 100 becomes small. However, as in the present embodiment, when the portion positioned on the score line non-forming portion 413 side with respect to the top portion 420A is also pressed by the tab 500, the amount of the inner portion entering the inside of the beverage can 100 increases. .

Moreover, in this embodiment, as shown to FIG. 7 (A), by making the panel side protrusion part 420 hemispherical, the outer surface of the panel side protrusion part 420 is made into the curved surface which has a curvature, and FIG. As shown in A), the curvature is also given to the second side 52 of the tab 500. And in this embodiment, it is set as the structure which makes the 2nd side 52 52 with a curvature, and the panel side protrusion part 420 in which the outer surface was formed in the curved surface contact in this way. In the case of the configuration of the present embodiment, as the tab 500 is displaced (rotated), the contact portion between the panel-side protrusion 420 and the second side 52 is sequentially displaced. When the curvature is given to 52 and the outer surface of the panel side protrusion 420 is formed with a curved surface, the tab 500 and the panel side protrusion 420 do not get caught and the panel side protrusion 420 has While the second side 52 of the tab 500 slides on the outer surface, the two are relatively displaced. Thereby, in this embodiment, the operativity of the tab 500 becomes favorable compared with the structure which a catch etc. generate | occur | produce between the tab 500 and the panel side protrusion part 420. FIG.

Furthermore, in the present embodiment, as described with reference to FIG. 4, the panel-side protrusion 420 formed on the panel 400 is arranged in a state of being brought close to the first protrusion 431 (first rivet 260A) by the dimension L. ing. More specifically, the score line 410 is formed in a shape that is substantially a line object with the straight line M in FIG. 4 as the symmetry axis except for the portion of the score line non-forming portion 413. In the present embodiment, this straight line is a straight line. The panel side protrusion 420 is provided closer to the side closer to the score line non-forming part 413 than M (the approached structure). In addition, in the present embodiment, the score line non-forming portion 413 serving as a connection portion between the main body portion and the inner portion of the panel 400 is provided on one region side of the two regions facing each other across the straight line M. The panel-side protruding portion 420 is also provided in a state of being brought closer to one of the two regions. Here, when the panel side protrusion 420 is provided closer to the score line non-forming part 413 than the straight line M, the panel side protrusion 420 is provided on the side farther from the score line non-forming part 413 than the straight line M. Compared to the case, the inner part enters the inside of the beverage can 100 more deeply, the substantial opening area increases, and the user can easily drink the beverage inside the beverage can 100.

Although not described above, bending is performed along the second side 52 of the edge of the tab 500 and the edge is folded back, or the second side 52 of the edge of the tab 500 is folded. It can also be curled along. In this case, the deformation of the tab 500 that may occur when the second side 52 presses the panel-side protrusion 420 is less likely to occur. The folding process and the curling process can be performed by deforming the tab 500 so that the tab 500 bends toward the panel 400 with respect to the bending direction, or the tab is directed toward the opposite side of the panel 400. This can also be done by deforming the tab 500 so that the 500 bends.

In the beverage can 100 of the present embodiment, the user can drink the beverage inside the beverage can 100 by rotating the tab 500 about 180 ° in one direction. In addition, a sufficiently large opening is formed even if the tab 500 rotated in one direction is not rotated in the reverse direction (not returned to the initial state). For this reason, the user can drink the internal beverage with a simple operation. More specifically, in the present embodiment, since the operation necessary for the opening is only the operation for causing the tab 500, the operation necessary for forming the opening becomes simple.

As described above, in the present embodiment, the amount of protrusion of the tab side protrusion 520 (see FIG. 1C) from the base 510 is not constant, and one end of the tab 500 of the tab side protrusion 520 is not fixed. The protruding amount of the portion (intermediate portion) located between the portion 55 and the other end portion 56 is smaller than the protruding amount at the one end portion 55 and the protruding amount at the other end portion 56. In the present embodiment, when the tab 500 is operated by the user and the tab 500 is rotated about 180 ° (when reversed), the intermediate portion faces the tightening portion 250 as shown in FIG. It becomes like this. In this case, the tab 500 can be rotated more and the opening formed in the panel 400 can be made larger.

FIG. 8 is a view showing a comparative example of the beverage can 100. In addition, the same code | symbol as the above is attached | subjected about the part which has the function similar to embodiment described above. Moreover, the figure (A) is a figure at the time of seeing the drink can 100 of a comparative example from upper direction, The figure (B) is the case where the tab 500 and the panel 400 are seen from the arrow VIIIB direction of the figure (A). FIG. FIG. 6C is a view when the tab 500 is viewed from the direction of the arrow VIIIC in FIG.

In the comparative example shown in the figure, the tab 500 is formed in a flat plate shape. In this comparative example, the tab 500 is disposed along the surface of the panel 400 and the tab 500 is provided in contact with the surface of the panel 400. In this comparative example, in addition to the two protruding pieces 57, a second protruding piece 58 is provided between the protruding pieces 57. In the tab 500 in this comparative example, in order to increase the bending rigidity, the edge of the third side 53, the edge of the fourth side 54, and the edge of the second protruding piece 58 are folded back. Has been given.

FIG. 9 is a diagram illustrating a state of the tab 500 when the tab 500 in the comparative example is operated by the user. In addition, FIG. 9 shows the state of the tab 500 in the cross section taken along the line IX-IX in FIG.
Also in this comparative example, when the tab 500 is operated by the user, the other end 56 side of the tab 500 is lifted by the user. Thereby, the area surrounded by the score line 410 in the panel 400 is pressed by the second protruding piece 58 of the tab 500. When the second projecting piece 58 is pressed, the panel 400 is broken at the score line 410, and an opening is formed in the panel 400.

4, 8, and 9, when the process of forming the opening of this comparative example is observed, first, the user lifts the other end 56 side so that the tab 500 is near the base of the protruding piece 57. The second protruding piece 58 bent from the inside and entering the can causes the panel 400 to form an opening. More specifically, when the user lifts the other end 56 side, the tab 500 is bent from the vicinity of the base of the protruding piece 57, and the second protruding piece 58, which is a part corresponding to the other end 56, is formed on the beverage can 100. Try to enter inside. At this time, the second projecting piece 58 presses the panel 400, breaks the score line 410 formed on the panel 400, and the inner part surrounded by the score line 410 serving as the opening piece forms the score line non-forming part 413. As a connecting portion with the panel 400, the beverage can 100 is bent inside, and an opening is formed in the panel 400. However, since this opening is formed in relation to the protruding amount of the second protruding piece 58 of the tab 500 entering the can, in this case, the opening is a state in which the opening piece is slightly opened. The open area becomes small. In order to increase the opening area, it is necessary to increase the protruding amount of the second protruding piece 58.
By the way, in this comparative example, since the tab 500 is arranged along the panel 400 and in contact with the panel 400, when the other end 56 side of the tab 500 is lifted by the user, the arrow 9A in FIG. As shown in FIG. 2, a pressing load that presses the second projecting piece 58 upward in the drawing acts on the lower surface of the second projecting piece 58 in the figure. Further, as shown by an arrow 9B, a pressing load that presses the other end portion 56 side upward in the drawing acts on the other end portion 56 side of the tab 500 as well. As a result, in the comparative example, the tab 500 is easily bent at the base of the second protruding piece 58. When such a bend occurs, a situation may occur in which the opening of the panel 400 is not formed, or the formed opening becomes small.
As described in the previous stage, in order to increase the substantial opening area, the protruding amount of the second protruding piece 58 must be increased. However, when the protrusion amount is increased, the moment applied to the base of the second protrusion piece 58 increases. Therefore, in order to reduce the bending, it is necessary to increase the rigidity of the portion. Therefore, there is a possibility that the manufacturing cost of the tab 500 may increase, such as selection of a material having high rigidity and an increase in material plate thickness.

On the other hand, in the configuration according to the present embodiment, as indicated by an arrow 10A in FIG. 10 (a view when the state when the tab 500 presses the panel-side protruding portion 420 is viewed from the side), A load is applied to the side edge 52 from the panel-side protrusion 420 of the panel 400, and this load is a component force in the radial direction of the load arrow 10B acting along the longitudinal direction of the tab 500. In addition, the arrow 10 </ b> B is a load that compresses the tab 500 along the longitudinal direction of the tab 500. The major difference between this embodiment and the comparative example is in the direction of receiving a load. In the present embodiment, a load is applied along the longitudinal direction of the tab 500, but in the comparative example, a load is applied in a direction perpendicular to the longitudinal direction. Further, since the strength of the tab 500 is different between the longitudinal direction and the perpendicular direction of the longitudinal direction, the tab 500 is more difficult to bend in the longitudinal direction but more easily bent in the longitudinal direction. It can be said that it has rigidity compared to the example.

More specifically, in the configuration according to the present embodiment, as shown in FIG. 1B and the like, the second side 52 that functions as a pressing portion that presses the panel 400 (panel-side protruding portion 420) of the tab 500. However, it is in a state of being lifted (separated) from the panel 400. In addition, in the present embodiment, the pressing of the panel 400 above the portion of the tab 500 that is fixed by the rivet 260 and serves as a fulcrum for rotation (the base of the protruding piece 57) (at a location away from the panel 400). A second side 52 for performing the above is provided.

For this reason, in this embodiment, when the tab 500 contacts the panel 400 and the tab 500 presses the panel 400, the tab 500 is arranged in an angled state with respect to the panel 400 (see FIG. 10). . In this case, as described above, the load acting on the tab 500 from the panel 400 is a load for compressing the tab 500. As a result, in the configuration according to the present embodiment, the tab 500 is less likely to be bent as compared with the comparative example described above.

FIG. 11 is a diagram showing another configuration example of the beverage can 100. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XIB direction of the figure (A). is there. FIG. 3C shows a state when the tab 500 presses the panel 400.

In the embodiment described above, the configuration in which the panel-side protrusion 420 is provided on the panel 400 has been described. However, in the present embodiment, as shown in FIGS. 420 is not provided. In this case, as shown in FIG. 3C, when the other end 56 side of the tab 500 is lifted by the user and the tab 500 rotates about 90 °, the second side 52 of the tab 500 presses the panel 400. Will come to do. Due to this pressing, as described above, the score line 410 is broken and an opening is formed in the panel 400. In addition, in this case, after the second side 52 of the tab 500 comes into contact with the panel 400, the tab 500 is further rotated by about 90 ° to complete the opening. In addition, in the structure of this embodiment, since the panel side protrusion part 420 is not provided, the penetration amount of the inner site | part to the inside of the drink can 100 becomes smaller than the penetration amount in the structure shown in FIG. In this case, the opening formed in panel 400 is smaller than the opening formed in the configuration shown in FIG.

As described above, by bending the portion of the tab 500 that presses the panel 400 from the panel 400, the tab 500 is less likely to be bent. To further suppress the bending at the tab 500, FIG. It is preferable that a projecting piece such as the second projecting piece 58 shown in FIG. Specifically, it is preferable that a protruding piece protruding from the second side 52 is not provided as in the configuration shown in FIGS. More specifically, when the panel 400 is viewed from the front and the side to which the tab 500 is attached as in the second side 52 of FIG. 1A, the panel 400 of the tab 500 is pressed. The part is preferably formed so as to be linear and along a direction orthogonal to the tab arrangement direction.

Further, in order to prevent the bending of the tab 500, the position of the second side 52 when the panel 400 is viewed from the front and the side to which the tab 500 is attached is shown in FIG. It is preferable that the first side 51 (the other end portion 56) side be closer to the straight line SL passing through the two rivets 260. In addition, although illustration is abbreviate | omitted, the 2nd side 52 can also be provided so that it may overlap with the straight line SL which passes along the two rivets 260. FIG. Here, the second side 52 is not the side on which the other end portion 56 is provided, as shown in FIG. When provided on the side opposite to the side where the end portion 56 is provided, the tab 500 is likely to bend around the portion of the tab 500 where the straight line SL passes (see reference numeral 12A). 12A is a view when the beverage can 100 is viewed from above (a view when the panel 400 is viewed from the front and the side to which the tab 500 is attached), and FIG. It is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XIIB direction of the figure (A).

In the present embodiment, as described above, the panel-side protrusion 420 is provided between the two rivets 260. In this case, the dimension of the tab 500 in the height direction (the tab 500 (Thickness) can be kept small. Here, for example, as shown in FIG. 14 (a diagram showing the panel 400 and the tab 500 in the comparative example), when the panel-side protrusion 420 is provided at a location that is out of between the two rivets 260 provided, It is necessary to increase the dimension of the tab 500 in the height direction. In other words, it is necessary to dispose the second side 52 at a location further away from the panel 400. In this case, the dimension of the tab 500 in the height direction is increased.

Here, when the dimension in the height direction of the tab 500 becomes large, the tab 500 protrudes above the upper edge of the can lid 300 (upper edge of the winding fastening portion 250) in some cases. In such a case, the beverage cans 100 may be difficult to stack. In addition, the substantial occupied volume of the beverage can 100 increases. For this reason, in this embodiment, the dimension in the height direction of the tab 500 is suppressed by providing the panel side protrusion 420 between the two rivets 260 provided as described above.

Note that whether or not the panel-side protrusion 420 is located between the two rivets 260 (whether or not the rivets 260 are provided on both sides of the panel-side protrusion 420) is shown in FIG. This can be determined by viewing the tab 500 from the side, as shown in FIG.

More specifically, as shown in FIG. 15 (A), when the tab 500 is viewed from the side, the panel side protrusion 420 is located on the left side in the drawing (see reference numeral 420A) in the drawing, and When at least a part of the rivet 260 is located on the right side in the drawing with respect to the left end (see reference numeral 420B) of the panel side protruding portion 420 in the drawing, the panel side protruding portion 420 is positioned between the two rivets 260. I can say that. Further, in another example, it can be said that the panel-side protrusion 420 shown in FIG. 15B is also located between the two rivets 260. In the example shown in FIG. 15B as well, the panel side protrusion 420 is on the left side in the drawing (see reference numeral 420A) and the panel side protrusion 420 is on the left end in the drawing (see reference numeral 420B). A part of the rivet 260 is located on the right side in the figure.

In addition, when the panel side protrusion part 420 is arrange | positioned between the two rivets 260, in addition to being able to suppress the dimension of the height direction of the tab 500, the operation load of the tab 500 can also be reduced.
Here, in the present embodiment, when the opening is formed by the tab 500, first, as shown in FIG. 5A, the position between the panel-side protruding portion 420 of the panel 400 and the first rivet 260A is set. The panel 400 is broken at the site to be operated, but if the load from the tab 500 is concentrated on this site located between the panel side protrusion 420 and the first rivet 260A, the score line 410 The panel 400 is easily broken, and the operation load on the tab 500 can be reduced.

Here, when the panel side protrusion part 420 is provided in the location removed from between the two rivets 260, the distance between the panel side protrusion part 420 and the first rivet 260A increases. For reference, referring to FIG. 14, in this case, the panel-side protrusion 420 is not located between the two rivets 260. Therefore, the distance between the panel-side protrusion 420 and the rivet 260 is larger than when the panel-side protrusion 420 is positioned between the two rivets 260. Therefore, the distance between the panel side protrusion 420 and the first rivet 260A is increased. In this case, the load acting on the portion located between the panel-side protrusion 420 and the first rivet 260A (the load that causes the panel 400 to break) tends to be small. In other words, the closer the panel-side protrusion 420 and the first rivet 260A are, the more efficiently the load acts on the portion between the panel-side protrusion 420 and the first rivet 260A. The acting load increases. On the other hand, when the panel-side protruding portion 420 is located at a position deviated from between the two rivets 260 and the panel-side protruding portion 420 and the first rivet 260A are separated from each other, part of the load is caused by elastic deformation of the panel 400 or the like. As a result, the load acting on the part tends to be small.
More specifically, a panel side protrusion 420 is formed between the first rivet 260A and the second rivet 260B, and the panel side protrusion 420 is disposed closer to the first rivet 260A than the second rivet 260B. Yes. That is, the panel side protrusion 420 is close to the first rivet 260A. At this time, when a pressing load is received at the top of the panel-side protruding portion 420, the following formula is established for the load acting on each of the two rivets.
P1 = P2 + P3 (1)
P2 × a = P3 × b (2)
From (2) and a <b, P2> P3 is established. Thereby, the load acting on the first rivet 260A becomes larger than the load acting on the second rivet 260B. Note that P1 is a pressing force applied to the panel side protrusion 420, P2 is a load acting on the first rivet 260A, and P3 is a load acting on the second rivet 260B. Further, a is the distance between the panel side protrusion 420 and the first rivet 260A, and b is the distance between the panel side protrusion 420 and the second rivet 260B.

Here, in the present embodiment, as described above, the panel-side protrusion 420 is positioned between the two rivets 260, and the separation distance between the panel-side protrusion 420 and the first rivet 260A is small. In this case, the load from the tab 500 is efficiently transmitted to the portion located between the panel side protrusion 420 and the first rivet 260A. In this case, as described above, the panel 400 is easily broken at the score line 410, and the operation load on the tab 500 required for breaking the panel 400 is reduced.

As another example, as shown in FIG. 23 (a diagram showing another configuration example of the tab 500), when the tab 500 is viewed from the side, the shape of the second side 52 is inclined by 60 °. (See FIG. 4D). In this case, when the other end 56 side of the tab 500 is lifted by the user and the tab 500 rotates about 60 ° (see FIG. (C)), the second side 52 comes to press the panel 400. By this pressing, the score line 410 is broken and an opening is formed in the panel 400. In this case, the tab 500 can be further rotated about 120 ° from when the second side 52 abuts against the panel 400 until the opening is completed. The inclination angle of the second side 52 is not limited to 60 °, and can be set arbitrarily.

FIG. 17 is a view showing another configuration example of the beverage can 100. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XVIIB direction of the figure (A). is there.

Also in this configuration example, the panel 400 is not provided with the panel-side protrusion 420 (see FIG. 1). In this configuration example, a second protruding piece 58 protruding from the second side 52 is provided between the two protruding pieces 57 provided. Here, in this structural example, although the panel side protrusion part 420 is not provided, since the 2nd protrusion piece 58 is provided, it is enclosed by the inside part (score line | wire 410) to the inside of the drink can 100. The amount of entry of (part) can be increased.

In this configuration example, a bending moment acts on the second projecting piece 58. However, in this configuration example, the second projecting piece 58 is formed in a curved shape. The protruding piece 58 is less likely to be bent. In other words, in the present configuration example, since the second protruding piece 58 is curved so as to protrude in a direction away from the panel 400, the second protruding piece 58 is unlikely to be bent.

Another configuration example of the beverage can 100 will be further described.
FIG. 18 is a view showing another configuration example of the beverage can 100. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XVIIIB direction of the figure (A). is there. FIG. 6C is a view when the tab 500 is viewed from the direction of the arrow XVIIIC in FIG.

In the configuration example shown in the figure, the entire tab 500 is formed in a flat plate shape. In this configuration example, the tab 500 is arranged along the surface of the panel 400 and the tab 500 is provided in contact with the surface of the panel 400. Therefore, in the present configuration example, the thickness of the tab 500 is smaller than that of the tab 500 (see FIG. 1) provided with the tab side protrusion 520. Further, in this configuration example, the protruding dimension of the tab 500 from the surface of the panel 400 is smaller than that of the configuration shown in FIG.

Here, also in the tab 500 in this configuration example, the second protruding piece 58 is provided between the two protruding pieces 57 provided. Further, in the tab 500 in this configuration example, in order to increase the bending rigidity of the tab 500, the edge of the third side 53, the edge of the fourth side 54, and the edge of the second protruding piece 58 (outer periphery) ). More specifically, the second projecting piece 58 includes the front end 580, the first side 581 arranged along the tab arrangement direction, and the same as the first side 581 arranged along the tab arrangement direction. And a second side 582 arranged on the side. In the second protruding piece 58 of the tab 500 in this configuration example, the tip 580, the first side 581, and the second side 582 are folded back.

Here, when the tab 500 in the present configuration example is operated by the user, the other end 56 side of the tab 500 is lifted. At this time, the base 510 of the tab 500 (the other end of the tab 500 than the second projecting piece 58). A bending moment acts on the portion located on the side of the portion 56). By the way, in this embodiment, since the folding process is performed with respect to the edge part of the 3rd side edge 53, and the edge part of the 4th side edge 54 as above-mentioned, the bending of the base 510 of the tab 500 is carried out. It is hard to occur. Although a bending moment acts on the second protruding piece 58, in this configuration example, the edge of the second protruding piece 58 is also folded, and the second protruding piece 58 is also bent. It is hard to occur.

Another configuration example of the beverage can 100 is further shown.
FIG. 19 is a diagram illustrating another configuration example of the beverage can 100. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XIXB direction of the figure (A). is there. FIG. 6C is a view when the tab 500 is viewed from the direction of the arrow XIXC in FIG.

Also in this configuration example, the second protruding piece 58 protruding from the second side 52 is provided on the tab 500 as described above. Furthermore, in this configuration example, an area located from the tip of the second protruding piece 58 of the tab 500 to the other end 56 of the tab 500 and located in the center of the tab 500 (the center in the direction orthogonal to the tab arrangement direction). Bending is performed on the region), and a plurality of convex portions 525 along the tab arrangement direction are provided in this region.

Here, each of the plurality of provided protrusions 525 is formed so that its cross-sectional shape is substantially triangular, and is arranged in a direction orthogonal to the tab arrangement direction (width direction of the tab 500). Further, as shown in FIG. 19B, each of the convex portions 525 includes a first piece 525A that goes from the lower left direction in the drawing to the upper right direction in the drawing, and a first piece 525A that goes from the lower right direction in the drawing to the upper left direction in the drawing. 2 pieces 525B. The first piece 525A and the second piece 525B are provided in a state where the upper end portion of the first piece 525A in the drawing and the upper end portion of the second piece 525B in the drawing are connected.

Here, also in this configuration example, the other end portion 56 side of the tab 500 is lifted, and a bending moment acts on the base portion 510 of the tab 500. By the way, as described above, in this configuration example, the tab 500 is provided with a plurality of convex portions 525 along the tab arrangement direction, and the bending of the base portion 510 due to the bending moment is less likely to occur. In addition, although a bending moment acts on the second protruding piece 58, in this configuration example, the second protruding piece 58 is also provided with a convex portion 525, and the second protruding piece 58 is less likely to be bent. Yes. Here, in this configuration, as in FIG. 1, the tab 500 is provided with protrusions (convex portions), but the height of each of the convex portions 525 is smaller than in the configuration in FIG. 1. The thickness of the tab 500 is small.

Although not described above, in this configuration example, the lower end portion of the convex portion 525 (see reference numeral 526) on the panel 400 side of the lower surface of the base portion 510 of the tab 500 (see reference numeral 500 </ b> A in FIG. 19B). ) Does not protrude. Here, when the lower end portion of the convex portion 525 protrudes to the panel 400 side from the lower surface of the base portion 510, a gap is formed between the tab 500 and the panel 400, and the tab 500 comes to float from the panel 400.

In this configuration example, as shown in FIG. 19B, the center line CL of the tab 500 (the center line passing through the center in the direction orthogonal to the tab arrangement direction, the center passing through the center in the width direction of the tab 500) The tab 500 is formed line-symmetrically with the line) as the axis of symmetry.

Here, for example, as shown in FIG. 20 (a diagram showing another configuration example of the tab 500), the convex portion 525 is single, and the convex portion 525 is provided at a position off the center line CL. Is also possible. By the way, in this case, there is a possibility that the tab 500 and the panel 400 come into strong contact with each other at a location deviated from the center portion (the center portion in the width direction) of the tab 500. In such a case, the tab 500 is twisted. . In this case, the load is difficult to be transmitted from the tab 500 to the panel 400, and the operation load of the tab 500 when the opening is formed in the panel 400 tends to increase.

FIG. 21 is a diagram showing another configuration example of the beverage can 100. In addition, the figure (A) is a figure at the time of seeing the drink can 100 from upper direction, The figure (B) is a figure at the time of seeing the tab 500 and the panel 400 from the arrow XXIB direction of the figure (A). is there. FIG. 8C is a view when the tab 500 is viewed from the direction of the arrow XXIC in FIG.

In the configuration example shown in the figure, a fold portion 527 formed by bending the tab 500 is provided at the center portion of the tab 500 (the center portion in the direction orthogonal to the tab arrangement direction). Here, as shown in FIG. 5B, the folding portion 527 is arranged along the tab arrangement direction, similarly to the first bending portion 511 which is an example of a folding line arranged along the tab arrangement direction. A second bending portion 512, which is an example of a folded crease, is provided. The first bending portion 511 is provided on the fourth side 54 side of the tab 500, and the second bending portion 512 is provided on the third side 53 side of the tab 500. In addition, a gap is formed between the first bent portion 511 and the second bent portion 512.

Further, the folding portion 527 has one end connected to the base 510 at the first bending portion 511 and opposed to the base 510, and one end at the second bending portion 512 to the base 510. And a second facing piece 522 disposed opposite to the base 510. Furthermore, the folding portion 527 is provided with a third bending portion 513 arranged along the tab arrangement direction, and a fourth bending portion 514 arranged along the tab arrangement direction, and a third bending portion. Connected to the other end of the first opposing piece 521 at 513, connected to the other end of the second opposing piece 522 at the fourth bending portion 514, and the first opposing piece 521 and the second opposing piece 522. The 3rd opposing piece 523 provided so that both of these may be opposed is provided.

Here, also in this configuration example, the other end 56 side of the tab 500 is lifted and bent with respect to the base 510 of the tab 500 (a portion of the tab 500 that is located on the other end 56 side of the second protruding piece 58). Although a moment acts, as described above, in the present configuration example, the folding portion 527 is provided along the tab arrangement direction, and the bending of the tab 500 at the base portion 510 is less likely to occur. In the same manner as described above, a bending moment acts on the second projecting piece 58. However, in this configuration example, the folding portion 527 is also provided on the second projecting piece 58, and the second projecting piece 58 is also bent. It has become difficult.

In the configuration example described with reference to FIG. 21, a mode in which a plurality of pieces (first opposed piece 521 to third opposed piece 523) formed by bending is provided so as to overlap is illustrated in FIG. As shown to (A) of the figure which showed the other structural example of the drink can 100, the 1st opposing part formed by the 1st bending process part 531, the 2nd bending process part 532, and the 3rd bending process part 533 is shown. The piece 541 and the second opposing piece 542 may be provided so as to stand up from the base 510. In this case, the first opposing piece is arranged so that the upper end of the first opposing piece 541 and the upper end of the second opposing piece 542 do not protrude above the upper edge (clamping portion 250) of the can lid 300 (see FIG. 1). It is preferable to set the dimension in the height direction of 541 and the 2nd opposing piece 542. FIG.

In the configuration example described with reference to FIG. 21, the first facing piece 521 and the base 510 are only in contact with each other, and when the other end 56 side of the tab 500 is lifted, the tab 500 and the panel 400 are touched. The load on the tab 500 is difficult to be transmitted, and the operation load on the tab 500 when the opening is formed in the panel 400 tends to increase. Similarly, the second opposed piece 522 and the base 510, the first opposed piece 521 and the third opposed piece 523, and the second opposed piece 522 and the third opposed piece 523 are also in contact with each other. In this case, it is difficult for the load to be transmitted from the tab 500 to the panel 400, and the operation load of the tab 500 when the opening is formed in the panel 400 tends to increase.

Therefore, for example, as shown in FIG. 22B, two protruding pieces 550 protruding from the edge of the base 510 of the tab 500 are provided, the protruding pieces 550 are bent, and further, a part of the protruding pieces 550 is formed. It can be made to oppose the 3rd opposing piece 523. FIG. In such a case, the separation is less likely to occur, and the load is easily transmitted from the tab 500 to the panel 400. In this case, the operation load of the tab 500 when the opening is formed in the panel 400 is smaller than that when the separation occurs.

DESCRIPTION OF SYMBOLS 51 ... 1st side, 51A ... Notch, 52 ... 2nd side, 56 ... Other end part, 57 ... Projection piece, 58 ... 2nd projection piece, 100 ... Beverage can, 200 ... Container body, 260A ... first rivet, 260B ... second rivet, 300 ... can lid, 400 ... panel, 410 ... score line, 420 ... panel side projection, 500 ... tab, 510 ... base, 520 ... tab side projection, 530 ... groove

Claims

A panel attached to the opening of the can body;
A mounted portion attached to the panel, an operated portion that is operated by a user and moves away from the panel, and a main body that rotates around the attached portion by movement of the operated portion in the away direction And a portion that is provided on the side farther from the panel than the part to be attached and is spaced apart from the panel and advances toward the panel with the rotation of the main body, and a predetermined portion of the panel A pressing portion for pressing
Can lid with.
2. The can lid according to claim 1, wherein a protruding portion that protrudes toward the pressing portion is formed at a portion of the panel that is pressed by the pressing portion.
The main body of the tab is disposed so as to face the panel, and is disposed along one direction from the peripheral edge of the panel toward the center of the panel.
The pressing portion is provided on one end side in the one direction of the main body portion, and the operated portion is provided on the other end side in the one direction of the main body portion,
The region along the one direction of the tab of the tab is deformed, and the region protrudes toward the side opposite to the side where the panel is provided. The can lid according to claim 1 or 2.
Due to the protrusion of the region, a groove along the one direction is formed in the main body,
The main body portion of the tab has sides on each of the one end portion in the one direction and the other end portion in the one direction,
The groove formed in the main body is provided from one side located at the one end to the other side located at the other end. Item 3. The can lid according to item 3.
5. The can lid according to claim 4, wherein a cutout is formed in the other side located at the other end of the main body.
In the portion of the panel that is pressed by the pressing portion, a protruding portion that protrudes toward the pressing portion and has a top at the tip in the protruding direction is formed.
The panel is formed so as to surround the protruding portion, and a score line is formed to promote the breakage of the panel,
When the protruding portion is pressed by the pressing portion, the panel breaks at the score line, and a piece formed by a part of the panel is formed in a region surrounded by the score line. In addition, the piece rotates with the connecting portion between the main body of the panel and the piece as a fulcrum, and an opening is formed where the piece is located,
When the piece is rotated to a predetermined position and the rotation of the main body of the tab is finished, a portion of the outer surface of the protruding portion that is located closer to the connecting portion than the top is pressed. The can lid according to claim 1, wherein the can lid is configured to be pressed by a portion.
In the portion of the panel that is pressed by the pressing portion, a protruding portion protruding toward the pressing portion side is formed,
The panel is formed so as to surround the protruding portion, and is formed in a shape that is a line object around the target axis, and a score line that promotes breakage of the panel is formed,
When the protruding portion is pressed by the pressing portion, the panel breaks at the score line, and a piece formed by a part of the panel is formed in a region surrounded by the score line. In addition, the piece rotates with the connecting portion between the main body of the panel and the piece as a fulcrum, and an opening is formed where the piece is located,
The connection portion between the main body portion and the piece portion of the panel is provided on one of the two regions facing each other across the symmetry axis,
2. The can lid according to claim 1, wherein the protruding portion is arranged in a state of being brought closer to the one of the two regions.
The protrusion is formed in a hemispherical shape,
The said pressing part of the said tab is comprised by the side located in the edge of the said tab, and the site | part which presses the said protrusion part among the said side is formed with a curvature, It is characterized by the above-mentioned. Item 2. The can lid according to item 2.
A can body having an opening and a beverage contained therein, and a can lid for closing the opening of the can body,
The can lid is
A panel fixed to the can body;
A tab that is attached to the panel and operated by a user when an opening is formed in the panel;
Have
The tab is
A mounted portion attached to the panel;
An operated part that is operated by a user and moves away from the panel;
A main body that rotates around the attached portion by the movement of the operated portion in the separating direction;
Provided on the side farther from the panel than the part to be attached and arranged in a state of being separated from the panel, and advances toward the panel with the rotation of the main body and presses a predetermined portion of the panel A pressing portion to perform,
Beverage cans equipped with.
The main body portion of the tab is formed in a plate shape and has a side at an end portion,
The side of the main body functions as the pressing portion,
10. The beverage can according to claim 9, wherein when the panel is viewed from the front and from the side on which the tab is attached, the side that functions as the pressing portion is formed in a straight line. .
The main body of the tab is arranged along one direction from the peripheral edge of the panel toward the center of the panel,
The side that functions as the pressing portion is provided at one end portion in the one direction of the main body portion, and the operated portion is provided at the other end portion in the one direction of the main body portion,
When the panel is viewed from the front and from the side on which the tab is attached, the side that functions as the pressing portion is a straight line orthogonal to the one direction and passes through the attached portion. The beverage can according to claim 10, which is located on the operated portion side.
A panel attached to the opening of the can body;
A tab arranged along one direction and operated by a user when an opening is formed in the panel;
A first rivet for securing the tab to the panel;
A second rivet disposed at a position different from the first rivet in a direction crossing the one direction, and fixing the tab to the panel;
A pressed part provided between the first rivet and the second rivet provided to protrude from the surface of the panel and pressed by the tab operated by a user;
Can lid with.
A score line is formed on the surface of the panel,
The score line is provided so as to pass between the first rivet and the pressed portion and between the second rivet and the pressed portion. 12. The can lid according to 12.
The tab-side pressing portion that presses the pressed portion of the tabs is arranged in a state of being separated from the panel before the tab is operated by a user. The described can lid.
15. The tab according to claim 12, wherein the tab is formed in a plate shape, and a predetermined region along the one direction protrudes in a direction away from the panel. The can lid according to any one of the above.
A groove is formed in the tab by projecting the region of the tab away from the panel,
The can lid according to claim 15, wherein the groove and the pressed portion are formed so that at least a part of the pressed portion can be accommodated in the groove formed in the tab. .
The region of the tab is provided from one end to the other end of the tab, and the region located from the one end to the other end protrudes in a direction away from the panel. The can lid according to claim 15 or 16.
A can body having an opening and a beverage contained therein; a can lid for closing the opening of the can body;
With
The can lid is
A panel provided with a protrusion on the surface, attached to the can body,
A tab that is operated by a user when an opening is formed in the panel and presses the protruding portion of the panel;
A first rivet disposed on one side of the projecting portion of the panel and fixing the tab to the panel;
A second rivet disposed on the other side of the two sides of the protrusion of the panel and fixing the tab to the panel;
Beverage cans with
The tab side pressing portion that presses the protruding portion of the tab is disposed in a state of being separated from the protruding portion before the tab is operated by the user, and is disposed above the protruding portion. 19. The beverage can according to claim 18, wherein the beverage can is operated by a user to advance toward the protrusion from above the protrusion and press the protrusion from above the protrusion.
The tab is arranged along one direction and has a side at one end in the one direction, and when the tab is operated by the user, the side is brought into contact with the protrusion and the side Press the protrusion,
The side of the tab is formed so as to be along a direction orthogonal to the one direction and linearly when the panel is viewed from the front and the side where the tab is attached. The beverage can according to claim 18 or 19, characterized in that the beverage can.
The tab is disposed along one direction, has one end at one of both ends in the one direction, and has the other end at the other end of the both ends and a side at the one end, When the other end side of the tab is operated by the user, the side is brought into contact with the protruding portion to press the protruding portion,
The side of the tab is formed in a curved state so as to be recessed toward the other end of the tab when the panel is viewed from the front and from the side where the tab is attached. The beverage can according to claim 18 or 19, characterized in that the beverage can.
When the panel is viewed from the front and from the side where the tab is attached, the side located at the one end of the tab is a straight line orthogonal to the one direction and the first side The beverage can according to claim 20 or 21, wherein the beverage can is provided on the other end side of the tab with respect to the straight line passing through the rivet and the second rivet.
When the panel is viewed from the front and from the side where the tab is attached, the linear side located at the one end of the tab is a straight line orthogonal to the one direction. 21. The beverage can according to claim 20, wherein the beverage can is provided so as to overlap the straight line passing through the first rivet and the second rivet.
The beverage can according to any one of claims 18 to 22, wherein the protruding portion is formed in a state of protruding from the surface of the panel and is formed in a hemispherical shape.
The beverage can according to any one of claims 18 to 22, wherein the protruding portion is formed in a state of protruding from the surface of the panel and is formed in a conical shape.
A panel with protrusions on the surface and attached to the opening of the can body;
The panel is disposed so as to face the surface and along one direction, and has a first side at one end in the one direction and a second side at the other end. The region along the one direction protrudes in a direction away from the panel, and the first side is lifted by the user so that the second side faces the protrusion of the panel. A tab that abuts against the protrusion and presses the panel at the second side,
Can lid with.
The area of the tab is arranged from the first side to the second side, and the area arranged from the first side to the second side is away from the panel. 27. The can lid according to claim 26, wherein the can lid projects toward the top.
The portion of the second side that contacts the protruding portion is arranged at a position away from the protruding portion before the first side of the tab is lifted by the user and from the panel. 27. The device according to claim 26, wherein the first side side of the tab is lifted by a user so as to approach the panel and come into contact with the protruding portion of the panel. The can lid according to 27.
By projecting the region of the tab toward the direction away from the panel, the tab is formed with a groove along the one direction,
The can lid according to any one of claims 26 to 28, wherein the groove and the protrusion are formed so that a width of the groove is larger than a diameter of the protrusion.
When the region of the tab protrudes in a direction away from the panel, a tab side protrusion that is provided along the one direction and protrudes from the one surface is provided on one surface side of the tab. Formed,
The tab rotates around a predetermined place by lifting the first side by the user, and the front and back are reversed.
By reversing the front and back of the tab, the one surface of the tab faces the panel, and a part of the tab-side protrusion formed on the one surface side is on the periphery of the panel. I came to face each other
The amount of protrusion of the tab-side protruding portion from the one surface is the amount of protrusion at one end in the longitudinal direction of the tab-side protruding portion and the amount of protrusion at the other end in the longitudinal direction of the tab-side protruding portion. The can lid according to any one of claims 26 to 29, which is smaller than the can lid.
A can body having an opening and a beverage contained therein, and a can lid for closing the opening of the can body,
The can lid is
A panel provided with a protrusion on the surface, and attached to the opening of the can body,
The panel is disposed so as to face the surface and along one direction, and has a first side at one end in the one direction and a second side at the other end. The region along the one direction protrudes in a direction away from the panel, and the first side is lifted by the user so that the second side faces the protrusion of the panel. A tab that abuts against the protrusion and presses the panel at the second side,
Beverage cans with
When the panel is viewed from the front and from the side where the tab is attached, the second side of the tab is formed along a direction orthogonal to the one direction and linearly formed. 32. The beverage can according to claim 31, wherein the beverage can is formed.
A rivet for fixing the tab to the panel is further provided;
When the panel is viewed from the front and from the side where the tab is attached, the second side of the tab is a straight line orthogonal to the one direction and the straight line passing through the rivet. The beverage can according to claim 31 or 32, wherein the beverage can is provided on one side.
34. The beverage can according to any one of claims 31 to 33, wherein a notch is formed in the first side of the tab.
A panel attached to the opening of the can body;
It is arranged along the surface of the panel and along one direction, and has a first side at one end in the one direction and a second side at the other end, and A region located between the first side and the second side, and the region along the one direction protrudes in a direction away from the panel or a direction approaching the panel; A can lid provided with a tab that allows the second side to advance toward the panel and press the panel when the first side is lifted by the user.
36. The can lid according to claim 35, wherein the region of the tab is provided along the one direction and is located at a central portion of the tab in a direction crossing the one direction.
The protrusion of the region of the tab is directed from one surface of the first surface facing the panel and the second surface that is the surface opposite to the first surface to the other surface. 37. The can lid according to claim 35 or 36, wherein the can lid is formed by pressing and bending the tab.
A panel attached to the opening of the can body;
It is arranged along the surface of the panel, has a first side at one end in the longitudinal direction and a second side at the other end, and the first side and the first side The region located between the two sides is deformed to form a crease along the longitudinal direction, and the first side is lifted by the user so that the second side is A can lid provided with a tab that advances toward the panel and presses the panel.
The tab has a protruding piece protruding from the second side,
The can lid according to claim 38, wherein the fold line is also formed on the protruding piece.
40. The can lid according to claim 38 or 39, wherein a plurality of the fold lines formed along the longitudinal direction are provided at different locations in a direction intersecting the longitudinal direction.
A can body in which the beverage is housed;
A panel attached to the opening of the can body;
It is arranged along the surface of the panel, has a first side at one end in the longitudinal direction and a second side at the other end, and the first side is A tab main body part in which the second side is advanced toward the panel by being lifted;
The tab body portion is provided so as to protrude from the second side edge, and its outer peripheral edge is folded back, and when the first side side of the tab body portion is lifted by the user, it approaches the panel. A beverage can comprising a protruding piece that presses the panel.
The projecting piece is disposed along the longitudinal direction, and has a first side along the longitudinal direction at one end in a direction perpendicular to the longitudinal direction, and in the direction orthogonal to the longitudinal direction. Having a second side along the longitudinal direction at the other end,
The beverage can according to claim 41, wherein the folding process of the protruding piece is performed at least on the first side and the second side.
43. The beverage can according to claim 42, wherein the folding process of the protruding piece is also applied to the tip of the protruding piece.