JP2013189225A - Can body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a can body that achieves improvement in outflow of granular matter in liquid without causing an increase in facility cost.SOLUTION: A can body 1 includes: a cover 11 that has a disk-like panel part 21 having an opening 27 formed at a part thereof, and a groove part 22 formed on the outer periphery of the panel part 21, and projecting from the panel part 21 to one side; and a body 13 that includes a cylindrical body part 41, a reduced diameter part 47 formed at one end of the body part 41 and formed to have a smaller diameter than the body part 41, and a continuing part 46 making the body part 41 continue to the reduced diameter part 47, whose one end is shut by fixing the cover 11 at the reduced diameter part 47, and where the panel part 21 is located on the extension of a tangent T of the continuing part 46.

Description

  The present invention relates to a can body that contains a liquid therein and can discharge the liquid contained from an opening provided in a part of a lid.

  Currently, a can body is known that can contain a liquid beverage or the like and is provided with an opening through which a liquid contained in a part of a lid body can flow out. For example, when the stored beverage is allowed to flow out, the can body is formed so that the opening portion can be opened by operating a tab provided on the lid body and breaking a part of the lid body.

  Such a can body is made of steel or aluminum alloy for preserving the beverage contained therein, and therefore it is required to reduce the weight and reduce the amount of raw materials used. Therefore, a technique for reducing raw materials used for the lid and the bottom lid by reducing both ends of the body of the can body and reducing the diameters of the lid and the bottom lid is known (for example, Patent Document 1). reference).

  Such cans contain not only liquid drinks but also solid drinks in liquid drinks, such as corn corn potage soup with corn grains, red bean grains, fruit pulp Fruit juice drinks with a grain or a drink with a grain of Nata de Coco may be accommodated.

  However, when a beverage containing granules is allowed to flow out of the opening, there is a problem in that the movement of the granules is blocked by the lid between the trunk and the opening, and the granules remain in the can. That is, when the beverage in the can is drunk, the granules may not flow out and may remain in the can. For this reason, appearance of the can which improved the outflow property of the granule contained in a drink is desired.

  Therefore, a can body is known in which a part between a groove portion and an opening portion adjacent to a body provided on a lid body is inclined from the outer peripheral side of the lid body toward the opening portion (see, for example, Patent Document 2). . In this way, by tilting a part of the lid toward the opening, it is possible to guide the granules located on the lid to the opening along the slope and improve the flowability of the granules. However, in order to produce this lid body, it is necessary to drastically change manufacturing equipment such as a press die for molding the lid body.

Japanese Patent No. 3447418 Japanese Patent No. 3764279

  In the above-described can body, in order to reduce the remaining of the granular material, it is possible to prevent the residual of the granular material in the liquid by adopting a configuration in which a part of the lid body is inclined. It was necessary to make significant changes to the equipment. For this reason, there exists a problem that an installation cost increases. Therefore, there is a need for a can that can be manufactured with a conventional manufacturing facility without significant changes to the manufacturing facility and that can prevent the remaining fluid in the liquid.

  Then, an object of this invention is to provide the can which can improve the outflow property of the granule in a liquid, without increasing installation cost.

  In order to solve the above problems and achieve the object, the can body of the present invention is configured as follows.

  As one aspect of the present invention, the can body has a disk-shaped panel portion in which an opening is formed in a part thereof, and a groove portion formed on the outer periphery of the panel portion and protruding from the panel portion to one side. A lid, a cylindrical body, a reduced diameter part formed at one end of the body and having a smaller diameter than the body, and a continuous continuous body and the reduced diameter part And a body in which one end is closed by fixing the lid to the reduced diameter portion and the panel portion is located at an extension of a tangent to the continuous portion.

  ADVANTAGE OF THE INVENTION According to this invention, it became possible to provide the can which improved the outflow property of the granule in a liquid, without increasing installation cost.

The side view which shows the structure of the can which concerns on the 1st Embodiment of this invention. The top view which shows typically the structure of the cover body of the same can body. Sectional drawing which shows the principal part structure of the can. Sectional drawing which expands and shows the principal part structure of the can. The side view which shows the principal part structure of the can which concerns on the 2nd Embodiment of this invention. The side view which shows the principal part structure of the can which concerns on the 3rd Embodiment of this invention.

(First embodiment)
Hereinafter, the structure of the can 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

  FIG. 1 is a side view showing a configuration of a can body 1 according to the first embodiment of the present invention, FIG. 2 is a top view showing a configuration of a lid body 11 used in the can body 1, and FIG. 1 is a cross-sectional view showing the structure of the lid 11 and the body 13 taken along the line III-III in FIG. 1. FIG. 4 is a cross-sectional view showing the structure of the lid 11 and the body 13 taken along the line IV-IV in FIG. FIG. In the present embodiment, the following description will be made with the lid 11 side of the can 1 as the upper side and the bottom lid 12 as the lower side.

  As shown in FIG. 1, the can 1 includes a lid 11, a bottom lid 12, and a body 13. The can 1 is a so-called three-piece welded can formed by fixing a lid 11 and a bottom lid 12 to a body 13 formed by welding a steel plate called a rectangular blank into a cylindrical shape and welding it. A packaging container that holds and holds a liquid called a body.

  The can 1 contains, for example, a beverage, for example, a liquid drink 100, and a beverage containing a plurality of solid particles 101 in the liquid. The beverage is, for example, corn potage soup with corn grains, shiruko with red bean grains, fruit juice fruit juice drinks, or natadeco coconut drinks. Moreover, the said drink is accommodated by the jelly form, The liquid drink 100 and the jelly-like granule 101 may be mixed by shaking the can 1.

  The lid 11 is made of, for example, an aluminum alloy flat plate. The lid 11 includes a disk-shaped panel portion 21, a groove portion 22 provided on the outer periphery of the panel portion 21, and a flange portion 23 provided on the outer periphery of the groove portion 22. The lid body 11 is fixed to the body 13 by winding the flange portion 23 around one opening end of the body 13.

  The panel portion 21 includes a rivet 25 provided at the center thereof, a tab 26 fixed to the rivet 25, and an opening 27 provided adjacent to the rivet 25 and opened by the tab 26. ing. The rivet 25 is formed in the center of the panel part 21 by projecting a part of the panel part 21 to the outside.

  The tab 26 is called a so-called steon tab (SOT), and is a fixed portion 31 fixed to the rivet 25, a movable portion 32 provided to extend on one side of the fixed portion 31, and the other side of the fixed portion 31. And a movable portion 33 provided to extend to. The tab 26 is formed so that the movable portion 33 can move in the direction in which the panel portion 21 is pressed with the fixed portion 31 as a fulcrum by lifting the movable portion 32 away from the upper surface of the panel portion 21.

  The opening portion 27 is a part of the panel portion 21, which is between the center of the panel portion 21 and the groove portion 22, and is formed by a rupture portion 35 formed by a so-called score groove that is separated from the groove portion 22. Composed.

  Specifically, the opening 27 is an ellipse composed of a broken portion 35 formed in a part of the panel portion 21 and a portion of the center side of the panel portion 21 formed by a narrow groove due to a discontinuous indentation or notch. It is an area of shape. The opening 27 is pressed by the movable portion 33 moved in the region of the rupture portion 35 below the tab 26, so that the rupture portion 35 is broken and the panel portion 21 in the region within the rupture portion 35 is discontinuous. It is formed by rotating in the pressing direction around the part and opening a part of the panel portion 21. The opening 27 (breaking portion 35) is arranged such that the end closest to the groove 22 is separated from the groove 22 by about 1 mm to 3 mm.

  The groove portion 22 is provided on the outer periphery of the panel portion 21, and is formed so as to protrude from the main surface of the panel portion 21 to one side, specifically toward the inside of the can body 1.

  The bottom cover 12 is made of, for example, a flat plate made of steel plate. The bottom cover 12 is formed in a disk shape, and has a groove portion and a flange portion 38 on the outer periphery thereof. The bottom cover 12 is fixed to the body 13 by winding the flange portion 38 with the opening end on the lower side of the body 13.

  The body 13 is formed in a cylindrical shape, and a lid body 11 and a bottom lid 12 are fixed to both ends of the body 13 that are opened. The torso 13 includes a torso 41, a first neck 42 provided at one end of the torso 41, more specifically, an upper end to which the lid 11 of the torso 13 is fixed, and a torso 41. And a second neck portion 43 provided at the lower end to which the bottom lid 12 is fixed. The trunk portion 41 is formed to have a larger diameter than the first neck portion 42 and the second neck portion 43.

  The first neck portion 42 is formed by reducing the diameter of the upper end portion of the body portion 41. The first neck portion 42 includes a continuous portion 46 that is continuous with the trunk portion 41, and a reduced diameter portion 47 that extends from the continuous portion 46 in a cylindrical shape and has a smaller diameter than the trunk portion 41.

  The continuous portion 46 is annular and has two curved surface portions formed of curved surfaces with a predetermined curvature, or two curved surface portions that are annular and formed of curved surfaces with a predetermined curvature, and these curved surface portions. Is formed by three curved surface portions which are formed by curved surfaces having a predetermined curvature. The continuous portion 46 is continuous with the body portion 41 and the reduced diameter portion 47. In the present embodiment, the continuous portion 46 will be described using a configuration formed by two annular curved surfaces formed by curved surfaces having a predetermined curvature.

  As shown in FIGS. 3 and 4, the continuous portion 46 is formed in an annular shape, the first curved surface portion 51 continuous with the body portion 41, the first curved surface portion 51 and the reduced diameter formed in an annular shape. A second curved surface portion 52 that is continuous with the portion 47.

  As shown in FIG. 4, the first curved surface portion 51 has a shape, that is, a cross-sectional shape, having a curvature at which the center of curvature C <b> 1 is located on the inner side of the body 13. As shown in FIG. 4, the second curved surface portion 52 has a shape, that is, a cross-sectional shape, having a curvature at which the center of curvature C <b> 2 is located on the outer side of the body 13. The first curved surface portion 51 is formed to have a smaller curvature than the second curved surface portion 52. In other words, the radius of curvature R1 of the first curved surface portion 51 is formed larger than the radius of curvature R2 of the second curved surface portion 52.

  The reduced diameter portion 47 is formed such that the length from the panel portion 21 is longer than the length (depth) from the panel portion 21 to the tip of the groove portion 22. The reduced diameter portion 47 is formed such that the length from the panel portion 21 is such that the extension of the continuous portion 46 is located on the inner side of the groove portion 22 of the lid body 11, that is, in the panel portion 21.

  Here, the length of the reduced diameter portion 47 is a point where the reduced diameter portion 47 and the continuous portion 46 extend from the lower surface (inner surface) of the panel portion 21, that is, the reduced diameter portion 47 and the continuous portion 46 ( It is the length to the virtual ridge by extending the first curved surface 51). The extension of the continuous part 46 is a tangent T obtained from the inclination of the continuous part 46.

Hereinafter, the relationship between the tangent line T and the first neck portion 42 and the lid body 11 will be described with reference to FIG.
The tangent line T is an extension of the continuous portion 46 and is obtained from the inclination of the continuous portion 46. As shown in FIG. 4, when the continuous portion 46 is composed of the first curved surface portion 51 and the second curved surface portion 52 that are two curved surfaces, the tangent T is, for example, the center of curvature C1 of the first curved surface portion 51 and the second curved surface portion 51. 2 is a line orthogonal to the continuous line L passing through the center of curvature C2 of the curved surface portion 52.

  As shown in FIG. 4, the first neck portion 42 is formed so that the extension of the tangent line T can be disposed on the inner side of the groove portion 22 of the lid body 11, that is, on the panel portion 21. The length of the reduced diameter portion 47 is formed. In addition, it is more preferable that the opening portion 27 of the panel portion 21 is located on the extension of the tangent line T. In addition, when the drink 100 in the can 1 flows out of the opening 27, the tangent line T is the center of the body 13 in order to avoid the flow and the movement of the granules 101 when the liquid 100 flows out of the opening 27. An angle smaller than 45 degrees with respect to the axis is preferred.

Next, about the outflow of the drink (the drink 100 and the granule 101) in the can body 1 of the can body 1 comprised in this way, eating and drinking of the drink in the can body 1 by a user is demonstrated to an example.
First, when the user lifts the movable portion 32 of the tab 26 away from the panel portion 21, the tab 26 rotates about the fixed portion 31, and the movable portion 33 becomes the fracture portion 35 of the panel portion 21. Press inside area. Due to the pressing, the breaking portion 35 is broken, the panel portion 21 in the breaking portion 35 is rotated into the can 1, and the opening portion 27 is opened.

  Next, the user applies the opening 27 to the mouth, and the can body 1 and the lid body 11 and the bottom lid 12 are substantially the same in the height direction as shown in FIG. 4, or the lid body 11 is the bottom lid. Tilt to be lower than 12. As a result, as shown in the flow F of the drink 100 in FIG. 4, the liquid drink 100 flows out from the opening 27, and the user can drink the drink 100.

  At this time, the granule 101 contained in the liquid beverage flows out from the opening 27 along the flow F of the drink 100, so that the user eats the granule 101 together with the drink 100. It becomes possible.

More specifically, a plurality of granules 101 exist in the beverage, and a part thereof moves away from the body 13 along the flow of the drink 100 and the other part moves along the inner surface of the body 13. .
The particles 101 moving away from the body 13 flow out from the opening 27 along the flow F of the drink 100.

  When the granule 101 moving along the inner surface of the body 13 moves from the bottom lid 12 side along the inner surface of the trunk portion 41 toward the lid body 11 side, it moves to the continuous portion 46. When the granule 101 that has moved to the continuous portion 46 moves along the first curved surface portion 51 of the continuous portion 46, the drink along the inclination of the first curved surface portion 51 and the inclination of the first curved surface portion 51. With the flow of 100, the second curved surface portion 52 moves away from the inner surface of the continuous portion 46 and moves along the tangent line T.

  For this reason, the granule 101 that has moved along the inner surface of the body portion 41 is separated from the inner surface of the first neck portion 42 and does not contact the groove portion 22 of the lid body 11, but does it contact the panel portion 21. Or, it will flow out from the opening 27.

  Here, since the opening portion 27 is applied to the user's mouth, the end portion of the opening portion 27 (breaking portion 35) closest to the groove portion 22 is positioned below the panel portion 21. For this reason, the panel part 21 with which the granule 101 abuts is formed with a short width, and the granule 101 abutted with the panel part 21 also flows out from the opening 27 along the flow F of the drink 100. .

  That is, the granule 101 contained in the drink 100 is in a direction away from the first neck portion 42 due to the shape of the continuous portion 46 and the flow F of the drink 100 due to the shape of the continuous portion 46, and the panel It is guided toward the part 21 and moves. As described above, the can 1 is improved in the flowability of the granules 101 by separating the granules 101 from the inner surface of the body 13 by the continuous portion 46 and guiding them to the panel portion 21. It becomes possible to reduce the residue in 1.

  Next, an evaluation test which is one of evaluation methods for evaluating the effect of the can 1 of the present embodiment will be described below. The said evaluation test makes the can 1 of this Embodiment an Example, compares with the comparative example which is a can of the conventional example shown below, and evaluates the effect of the can 1.

(Example)
As shown in FIG. 4, the can body 1 according to the embodiment has a length of the reduced diameter portion 47 from the panel portion 21 of the lid 11 of 6 mm, a curvature radius R1 of the first curved surface portion 51 of 6 mm, The curvature radius R2 of the two curved surface portions 52 is 2 mm. Further, the difference in radius between the body portion 41 and the first neck portion 42 is 1.2 mm, the width of the groove portion 22 is 3 mm, and the depth of the groove portion 22 from the panel portion 21 is 1 mm.

  The can 1 is filled with a corn soup containing grains, which is a drink 100 containing granules 101, as a commercially available beverage. In addition, about 50 granules 101 (corn) are contained in corn soup.

(Comparative example)
As shown by a two-dot difference line in FIG. 4, the can body 200 used as a comparative example has two curved surfaces, a first curved surface having a curvature radius R1 of 6 mm and a second curved surface having a curvature radius R2 of 2 mm, similar to the can body 1. The length of the reduced diameter portion from the panel portion 21 is 2 mm. Further, the difference in radius between the body portion and the first neck portion is 1.2 mm, the width of the groove portion 22 is 3 mm, and the depth of the groove portion 22 from the panel portion 21 is 1 mm.

  That is, the can body 200 is the same as the can body 1 except that the reduced diameter portion is formed shorter than the reduced diameter portion 47 of the can body 1 so that the groove portion 22 is positioned on the extension of the tangent line of the continuous portion. It is formed into a shape.

  The can 200 is filled with a corn soup containing grains, which is a drink 100 containing granules 101, as a commercially available beverage. In addition, about 50 granules 101 (corn) are contained in corn soup.

Next, the detailed conditions of the evaluation test and the evaluation method will be described.
In the evaluation test, the can body 1 of the example and the can body 200 of the comparative example are heated to a can temperature of 55 ° C. In addition, 55 degreeC is the temperature at which the can 1 is warmed as a drink for HOT with a vending machine.

  Each of the warmed can body 1 and can body 200 is drunk by several testers, and the number of granules 101 remaining in can body 1 and can body 200 is recorded. Next, a significant difference test is performed from the number of cans 1 and 200 in which the granules 101 remain after drinking 30 bottles.

  In addition, when the statistical value t is 0.05 or less, that is, the reliability rate is 95% or more, there is a significant difference, and the configuration of the can body 1 or the can body 200 from which the granule 101 is more discharged is the structure of the granule 101. Judge that there is an effect of reducing the residual.

  As a tester's method of drinking used in the evaluation test, it is assumed that the tester drinks the corn soup with grains stored in a can at a normal time. The normal drinking method is to drink corn soup after shaking the can body 1 and the can body 200, or after further shaking the can body 1 and the can body 200, the can body 1 and the can body 200 are further rotated. And let the corn soup stir, and then drink without taking time. In addition, although how to drink in detail differs at the time of the test and the tester, this difference is not questioned in consideration of purchasers who purchase beverages containing cans.

The results of an evaluation test under such conditions are shown below.
As a result of flowing out 30 corn soups using the can body 1 of the example, as shown in Table 1, granules 101 (corn) remained in 16 out of 30 cans. That is, when can body 1 was used, it became possible to flow out all the granules 101 in 14 out of 30 cans.

As a result of flowing out 30 corn soups using the can body 200 of the comparative example, as shown in Table 1, granules 101 (corn) remained in 24 of 30 cans. That is, when the can body 200 was used, it became possible to flow out all the granules 101 in 6 out of 30 cans.

  When a significant difference test was performed from these results, the statistical value t = 0.027 and the reliability rate was 97.3%. From these facts, the can body 1 of the embodiment can discharge the particles 101 more than the can body 200 of the comparative example having a conventional shape, and can reduce the remaining of the particles 101. Judged that it was possible.

  According to the can 1 configured as described above, the first neck portion 42 is configured to dispose the panel portion 21 without disposing the groove portion 22 on the extension (tangent T) of the continuous portion 46. The particles 101 flowing along the trunk portion 41 are guided toward the panel portion 21 by the flow of the liquid (drink 100) and the continuous portion 46. Thereby, the can 1 can improve the flowability of the granules 101, and the granules 101 can reduce the remaining in the can 1.

  Further, the can 1 improves the flowability of the granules 101 by the shape of the continuous portion 46 and the reduced diameter portion 47 of the body 13. For this reason, the can body 1 can form the shapes of the continuous portion 46 and the reduced diameter portion 47 by using the conventional technology for reducing the diameter of both ends of the body 13. The mold used for the diameter need only be a shape that allows the first neck portion 42 to be molded.

  For this reason, since the can body 1 does not require a new process and manufacturing cost, it can be manufactured with the conventional manufacturing equipment, and it is contained in the drink accommodated inside, without increasing manufacturing cost and equipment cost. It is possible to improve the flowability of the particles 101.

  As described above, according to the can 1 according to the first embodiment of the present invention, it is possible to reduce the remaining particles 101 in the liquid.

  Note that the present invention is not limited to the first embodiment. In the example described above, the tangent line T in the configuration having the first curved surface portion 51 and the second curved surface portion 52 as an extension of the continuous portion 46 has been described, but the present invention is not limited to this. As described above, the continuous portion 46 may have a configuration having two curved surfaces and one plane between these curved surfaces, or a configuration having three curved surfaces.

  Hereinafter, the can body 1A having the continuous portion 46A according to the second embodiment of the present invention using FIG. 5 and the can body 1B having the continuous portion 46B according to the third embodiment of the present invention using FIG. Each will be described.

(Second Embodiment)
FIG. 5 is an enlarged side view showing the configuration of the continuous portion 46A of the can 1A according to the second embodiment of the present invention. In addition, in FIG. 5, the same code | symbol is attached | subjected to the structure equivalent to the can 1 of 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  As shown in FIG. 5, the can body 1A according to the second embodiment includes a lid body 11, a bottom lid 12, and a body 13A. The body 13A includes a body portion 41, a first neck portion 42A having a continuous portion 46A and a reduced diameter portion 47, and a second neck portion 43 on the bottom side.

  The continuous portion 46A is formed by two curved surface portions and one flat surface portion. Specifically, the continuous portion 46A includes an annular first curved surface portion 51 continuous with the body portion 41, a second curved surface portion 52 continuous with the reduced diameter portion 47, the first curved surface portion 51, and the second curved surface portion. 52, and an annular flat surface portion 53 that is continuous. The continuous portion 46 </ b> A is configured by an extension line of the plane portion 53, which is an extension of the tangent line T.

  The can body 1A configured as described above has the shape of the continuous portion 46A and the extension of the tangent line T of the continuous portion 46A so that the extension of the continuous portion 46A can be disposed on the inner side of the groove portion 22 of the lid body 11, that is, the panel portion 21 The length of the reduced diameter portion 47 is formed. In addition, it is more preferable that the opening portion 27 of the panel portion 21 is located on the extension of the tangent line T.

  According to the can body 1 </ b> A configured as described above, it is possible to improve the flowability of the particles 101 as in the case of the can body 1 described above.

(Third embodiment)
FIG. 6 is an enlarged side view showing the configuration of the continuous portion 46B of the can body 1B according to the third embodiment of the present invention. In FIG. 6, the same components as those of the can 1 of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 6, the can 1B according to the third embodiment includes a lid 11, a bottom lid 12, and a body 13B. The body 13B includes a body part 41, a first neck part 42B having a continuous part 46B and a reduced diameter part 47, and a second neck part 43 on the bottom side.

  The continuous portion 46B is formed by three curved surface portions. Specifically, the continuous portion 46B includes an annular first curved surface portion 51 that is continuous with the body portion 41, a second curved surface portion 52 that is continuous with the reduced diameter portion 47, a first curved surface portion 51, and a second curved surface portion. And an annular third curved surface portion 54 that is continuous with 52.

  The first curved surface portion 51 is formed with a curvature such that the center of curvature C <b> 1 is located inside the body 13. The second curved surface portion 52 is formed with a curvature such that the curvature center C <b> 2 is located on the outer side of the body 13. The third curved surface portion 54 is formed with a curvature such that the center of curvature C <b> 3 is located on the inner side of the body 13. The third curved surface portion 54 is formed such that the curvature radius R3 is larger than the curvature radius R1 of the first curved surface portion 51 and the curvature radius R2 of the second curved surface portion 52.

  Such a tangent line T of the continuous portion 46B is, for example, a line orthogonal to a continuous line L passing through the center of curvature C2 of the second curved surface portion 52 and the center of curvature C3 of the third curved surface portion 54, as shown in FIG. Consists of.

  The can body 1B configured as described above has the shape of the continuous portion 46B and the extension of the tangent line T of the continuous portion 46B so that the extension of the continuous portion 46B can be arranged on the inner side of the groove portion 22 of the lid body 11, that is, the panel portion 21. The length of the reduced diameter portion 47 is formed. In addition, it is more preferable that the opening portion 27 of the panel portion 21 is located on the extension of the tangent line T.

  According to the can body 1 </ b> B configured as described above, it is possible to improve the flowability of the granules 101 as in the case of the can body 1 and the can body 1 </ b> A described above.

  The present invention is not limited to the embodiment described above. In the example described above, in the can body 1 and the can body 1B, the configuration in which the line orthogonal to the continuous line L at the center of curvature of the two curved surface portions is defined as the tangent line T is not limited to this. For example, the tangent line T may be a continuous line passing through the boundary between the first curved surface portion 51 and the second curved surface portion 52 and the body portion 41 and the reduced diameter portion 47. Further, for example, a continuous line passing through the boundary portion of the body portion 41 and the first curved surface portion 51 and a virtual ridge portion due to the extension of the first curved surface 51 and the extension of the reduced diameter portion 47 may be set as the tangent line T.

  Further, in the above-described example, the body 13 has been described with the configuration having the second neck portion 43 at the bottom, but the configuration is not limited thereto, and may be a configuration without the second neck portion 43.

  Moreover, although the can 1 (1A, 1B) demonstrated the structure provided with the cover body 11, the bottom cover 12, and the trunk | drum 13 (13A, 13B) in the example mentioned above, it is not limited to this. For example, the body 13 may be configured such that the bottom cover 12 is integrally formed.

  Moreover, the structure which has only the cover body 11 and the trunk | drum 13 may be sufficient as the can body 1, for example. That is, when the can body 1 is manufactured, the state in which the bottom portion of the can body 1 is opened may be implemented before the beverage is accommodated therein. In addition, various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Can body, 11 ... Cover body, 12 ... Bottom cover, 13 ... Body, 21 ... Panel part, 22 ... Groove part, 23 ... Flange part, 25 ... Rivet, 26 ... Tab, 27 ... Opening part, 31 ... Fixed part 32 ... movable part, 33 ... movable part, 35 ... broken part, 38 ... flange part, 41 ... trunk part, 42 ... first neck part, 43 ... second neck part, 46 ... continuous part, 47 ... reduced diameter Part, 51 ... first curved surface part, 52 ... second curved surface part, 100 ... drink, 101 ... granule.

Claims (9)

A disc-shaped panel part in which an opening is formed in a part thereof, and a lid body formed on the outer periphery of the panel part and having a groove part protruding from the panel part to one side;
A cylindrical body part, a reduced diameter part formed at one end of the body part and having a smaller diameter than the body part, and a continuous part that continues the body part and the reduced diameter part. The lid body is fixed to the reduced diameter portion so that one end thereof is closed, and the body portion in which the panel portion is located in an extension of the tangent line of the continuous portion,
A can characterized by comprising.   The said continuous part is an annular | circular shape, Comprising: The curved surface part formed by the curved surface of predetermined | prescribed curvature is formed by two curved surface parts which continue the said trunk | drum and the said diameter reduction part. Can body.   The can body according to claim 2, wherein the tangent line of the continuous portion is a line orthogonal to a continuous line connecting the centers of curvature of the two curved surface portions.   The continuous portion is an annular shape, formed of a curved surface having a predetermined curvature, two curved surface portions that continue the body portion and the reduced diameter portion, and an annular shape that connects the two curved surface portions with a straight line The can body according to claim 1, wherein the can body is formed of a flat portion.   The tangent of the said continuous part is a straight line along the said plane part, The can body of Claim 4 characterized by the above-mentioned.   2. The tangent line of the continuous portion is an annular shape, and is formed by three curved surface portions that are formed by curved surfaces having a predetermined curvature and are continuous with the body portion and the reduced diameter portion. The can described in 1.   The tangent line of the continuous portion is a line orthogonal to a continuous line connecting the curvature centers of any two curved surface portions of the three curved surface portions, the curved surface portions being the inner side and the outer side of the body. The can body according to claim 6.   The tangent line of the continuous part is a continuous line connecting a boundary part between the body part and the curved surface part and a boundary part between the curved surface part and the reduced diameter part. 6. The can body according to 6.   The tangent line of the continuous portion is a continuous line that connects a boundary portion between the body portion and the curved surface portion, and a virtual ridge portion formed by an extension of the curved surface portion and an extension of the reduced diameter portion. The can according to claim 2 or claim 6, wherein

Images