JP6359426B2 - Cap for can - Google Patents

Description

  The present invention relates to a can cap that can be attached to an upper portion of a beverage can on a drinking mouth side.

  A pull tab (pull top) beverage can is difficult to close again once the pull tab is opened. Therefore, several caps for cans that can be mounted so as to cover the upper part of the beverage can on the mouth side are disclosed. For example, Patent Document 1 and Patent Document 2.

  By the way, the beverage can has several diameters of the outer edge (winding portion) on the mouth side. Therefore, it is necessary to prepare the caps for cans of Patent Documents 1 and 2 separately for each diameter. If there are many can caps for each size, it is difficult to know which can cap can be used for which can, and it is complicated to hold many.

JP 2012-245981 A JP 2000-109107 A

  This invention is made | formed in view of the said situation, and makes it the subject which should be solved to provide the cap for cans which can be mounted | worn with several diameters of the outer edge by the side of the mouth of a drink can.

The structural feature of the invention for solving the above-described problems is that the winding is performed for each of at least three types of beverage cans in the first to third order from the smaller diameter of the tightening portion on which the drinking mouth is formed. A cap for a can that can be attached so as to be in close contact by pushing in a fastening part,
The first to third beverage cans have a constricted portion on the lower side of the tightened portion that is wound outward.
The top wall,
Projecting from the one surface side of the top wall portion in a substantially vertical direction, having the first fitting portion outer surface engaged from the outside and engaged with the constricted portion from the outside to the winding fastening portion of the first beverage can, The inner surface of the second tightening portion of the second beverage can has an inner surface of the second fitting portion, and the front end in the protruding direction has a diameter of the outer periphery of the tightening portion of the first beverage can. A first peripheral wall portion having a diameter between the inner diameter of the winding tightening portion of the second beverage can;
Projecting in a substantially vertical direction from one surface side of the top wall portion, having a second fitting portion outer surface on the inside that fits on the outer periphery of the winding fastening portion of the second beverage can and engages the constricted portion. A second peripheral wall portion having a shorter length in the protruding direction than the first peripheral wall portion;
An enlarged diameter portion formed from the vicinity of the tip of the second peripheral wall portion toward the outside;
A third fitting portion outer surface that protrudes from the enlarged diameter portion in a direction substantially parallel to the second peripheral wall portion, engages with an outer periphery of the winding tightening portion of the third beverage can, and engages with the constricted portion. A third peripheral wall portion having a length in the protruding direction combined with the second peripheral wall portion is longer than the first peripheral wall portion;
It is to have.

  According to the can cap of the present invention, it can be attached to the tightening portion of at least three types of beverage cans having different diameters of the tightening portion, and in particular, covers the mouth side that cannot be closed after opening the can, Suppresses losses and prevents spills even when defeated.

It is sectional drawing of the drink can which mounts the cap for cans of embodiment. It is a cross-sectional view (AA sectional view of FIG. 5) of the cap for cans of embodiment. It is an enlarged view of B of FIG. It is a top view of the cap for cans of embodiment. It is a bottom view of the cap for cans of embodiment. It is a visual recognition figure from the slanting upper part of the cap for cans of embodiment. It is a visual recognition figure from the slanting lower part of the cap for cans of embodiment.

  A representative embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the can cap according to the present embodiment is a beverage can 9 that includes a tightening portion 91 wound outward and a constricted portion 92 below the tightening portion 91. Attached to the winding part 91. The beverage can 9 is closed by a pull tab 94 of the upper lid 93 on the drinking mouth side, and can be opened by pulling up the pull tab 94. The can cap of the present invention can be attached to three types of beverage cans having different diameters of the winding tightening portion. Therefore, in order to facilitate the explanation as necessary, the beverage cans having a small diameter are changed to the first beverage can 9A, the second beverage can 9B, and the third beverage can 9C, and each part of each beverage can is distinguished. In this case, the same symbol corresponding to the size of the diameter is added to the end.

(Embodiment 1)
As shown in FIG. 2, the can cap 1 according to the present embodiment includes a top wall 2, a first peripheral wall 3, a second peripheral wall 4, a third peripheral wall 5, an enlarged diameter portion 6, and a can opening auxiliary portion 7. And molded with a flexible resin.

  As shown in FIG. 2, the top wall portion 2 has a plate shape substantially parallel to the upper lid 93 of the beverage can 9. The advertisement can be written or pasted on the flat portion 22 on the other surface exposed to the outside from the upper lid 93. The one surface side 21 is straight so as to be in close contact with the winding fastening portion 91 in a linear or planar shape in the circumferential direction.

  The first peripheral wall portion 3 protrudes in a substantially vertical direction from the one surface side 21 of the top wall portion 2 and has a cylindrical shape continuous in the circumferential direction, and a first fitting portion outer surface 31 on the reduced diameter side and a second diameter on the enlarged diameter side. A fitting portion inner surface 32. The first fitting portion outer surface 31 is fitted from the outside to the winding portion 91A of the first beverage can 9A, and is engaged with the constricted portion 92A of the first beverage can 9A. The second fitting portion inner surface 32 is used for winding the second beverage can 9B having a larger diameter of the winding portion 91 than the first beverage can 9A in which the winding portion 91A is fitted to the first fitting portion outer surface 31. It fits in the inner periphery of the part 91B. That is, the first peripheral wall portion 3 is fitted into two types of first beverage can 9A and second beverage can 9B in which the inner peripheral surface side and the outer peripheral surface side have different diameters of the winding portions 91, respectively. . Therefore, as for the 1st surrounding wall part 3, the front-end | tip 33 of the protrusion direction is between the diameter of the outer periphery of 91 A of winding parts of the can 9A for 1st drinks, and the diameter of the inner periphery of 91 C of winding parts 91B of the 2nd beverage can 9B. Is the diameter. As shown in FIG. 3, the tip 33 is narrower by about g (0.85 mm) than the thickness of the base of the first peripheral wall portion 3 on the one surface side 21 so that the second fitting portion inner surface 32 is inclined in the diameter reducing direction. Taper shape.

  The 2nd surrounding wall part 4 protrudes from the one surface side 21 of the top wall part 2 in the substantially perpendicular | vertical direction, is a cylindrical shape continuous in the circumferential direction, is fitted on the outer periphery of the winding tightening part 91B of the second beverage can, and the constricted part A second fitting portion outer surface 41 on the reduced diameter side that engages with 92B is provided on the inner side. The second peripheral wall portion 4 is formed so that a portion in contact with the winding tightening portion 91 </ b> B is straight, is located on the larger diameter side than the first peripheral wall portion 3, and is shorter in the protruding direction than the first peripheral wall portion 3.

  The third peripheral wall portion 5 protrudes from the enlarged diameter portion 6 formed in the diameter increasing direction from the vicinity of the distal end portion of the second peripheral wall portion 4 in a substantially parallel manner with the second peripheral wall portion 4 (first peripheral wall portion 3). And a third fitting portion outer surface 51 on the reduced diameter side that engages with the outer periphery of the winding portion 91C of the third beverage can 9C and engages the constricted portion 92C. The third fitting portion outer surface 51 is formed so that the portion in contact with the winding fastening portion 91 </ b> C is straight, and the length in the protruding direction of the second peripheral wall portion 4 and the third peripheral wall portion 5 is longer than that of the first peripheral wall portion 3. long.

  The first fitting portion outer surface 31 of the first peripheral wall portion 3, the second fitting portion outer surface 41 of the second peripheral wall portion 4, and the third fitting portion outer surface 51 of the third peripheral wall portion 5 are the center of the top wall portion 2. It is arranged and formed concentrically. The first fitting portion outer surface 31 has an inner diameter d1 of 51.7 mm, the second fitting portion outer surface 41 has an inner diameter d2 of 56.8 mm, and the third fitting portion outer surface 51 has an inner diameter d3 of 59.2 mm. As shown in FIGS. 6 and 7, the can cap 1 of the present embodiment has a cylindrical shape in which one end is closed and the other end is opened by the top wall portion 2, the second peripheral wall portion 4, and the third peripheral wall portion 5. It is a baseball cap shape formed with a bowl-shaped opening assisting portion 7 on the other end side that is formed and opened.

  The can opening auxiliary portion 7 is formed in a tapered wedge shape that is expanded from the third peripheral wall portion 5 in the diameter increasing direction, and the tip end portion 71 of the diameter expanding direction end portion is formed with a gradient on both the front and back surfaces. As shown in a plan view (FIG. 4) or a bottom view (FIG. 5) in which the flat portion 22 of the top wall portion 2 is substantially parallel to the paper surface, the can opening assisting portion 7 has a substantially triangular bowl-like base portion 72. A hole 73 is opened in the center. As shown in FIGS. 2 and 4, a shape that protrudes from the base 72 so as to surround the outer periphery of the hole 73, is formed so that the protruding amount decreases toward the tip 71, and the tip 71 side opens. Is formed. The tip portion 71 has a slope formed on both the front and back surfaces including the upper surface of the raising portion 74, and the inclined surface 711 on the back surface side is inclined at 40 to 50 degrees, preferably about 45 degrees with respect to the base portion 72. (See FIG. 2).

  The 2nd fitting part outer surface 41 has the three ribs 42-44 which protrude in a diameter reduction direction, as shown in FIG. The three ribs 42 to 44 have the same circumferential length and are arranged at equal intervals in the circumferential direction, and engage the constricted portion 92B of the second beverage can 9B. One rib 42 is located on the side where the can opening assisting portion 7 is located.

  The first fitting portion outer surface 31 has three ribs 34 to 36 protruding in the diameter reducing direction. The three ribs 34 to 36 engage with the constricted portion 92 </ b> A of the first beverage can 9 </ b> A, and the short rib 34 and the long ribs 35, 36 having different circumferential lengths are longer than the short rib 34. 36 are formed with a longer circumferential length. Moreover, the short rib 34 is a position opposite to the side where the can opening assisting portion 7 is formed, and protrudes toward the rib 42 side of the second fitting portion outer surface 41, and is a position facing the rib 42. The long ribs 35 and 36 are located on the side of the can opening auxiliary portion 7 so as to sandwich the rib 42 of the second fitting portion outer surface 41 in the circumferential direction.

  The 3rd fitting part outer surface 51 has the three ribs 52-54 which protrude in a diameter reduction direction. The three ribs 52 to 54 engage with the constricted portion 92 </ b> C of the third beverage can 9 </ b> C, and the short rib 52 and the long ribs 53 and 54 having different circumferential lengths are longer than the short rib 52. 54 have a longer circumferential length. The short rib 52 is located on the diameter-enlarging side of the short rib 34 of the first fitting portion outer surface 31, and the long rib 53 is located on the diameter-expanding side of the long rib 35 of the first fitting portion outer surface 31. 54 is located on the diameter expansion side of the long rib 36 of the first fitting portion outer surface 31. Further, the circumferential lengths of the ribs at the same position are the same.

  The can cap 1 of the present embodiment is configured so that the one surface side 21 of the top wall portion 2 is opposed to the upper lid 93 having the drinking mouth (pull tab 94) of the beverage can 9 so that the winding portion 91 of the beverage can 9 is tightened. Push into. The beverage cans 9 that can be mounted are three types of first beverage cans 9A, second beverage cans 9B, and third beverage cans 9C corresponding to the inner diameters of the outer surfaces of the respective fitting portions described above. If it is any of the cans 9, the can cap 1 according to the present embodiment can be easily fitted to the side surface of the fitting portion corresponding to the diameter by pressing it from above the upper lid 93 without worrying about the size of each. Can be installed. Moreover, the cap 1 for cans of this embodiment can be mounted without being limited to the open / closed can of the beverage can 9. Then, when opening the beverage can 9, the front end 71 of the opening assisting portion 7 can be inserted between the upper lid 93 and the pull tab 94 of the beverage can 9 to easily cause the pull tab 94. At that time, the can cap 1 makes it easy to cause the pull tab 94 regardless of whether the top wall portion 2 is up or down. However, since the front end portion 71 can be inserted further into the back side of the pull tab 94, the flat portion 22 of the top wall portion 2. It is preferable to insert with the side facing up. The reason why it can be inserted to the back side is that an inclined surface 711 that is inclined with respect to the surface of the base 72 is formed on the back surface side of the tip portion 71, and it is easy to get over without being caught by the convex portion formed on the upper lid 93. (See FIG. 2).

  The cap 1 for cans of the present embodiment has the tightening portion 91 for each of at least three types of beverage cans 9 in the first to third order from the smaller diameter of the tightening portion 91 formed with the drinking mouth. A can cap 1 that can be attached so as to be in close contact by being pushed in, wherein the first to third beverage cans 9A to 9C have a constricted portion 92 on the lower side of the tightened portion 91 that is wound outward. And projecting from the top wall portion 2 and the one surface side 21 of the top wall portion 2 in a substantially vertical direction, fitted into the winding fastening portion 91A of the first beverage can 9A from the outside, and engaged with the constricted portion 92A The first fitting portion outer surface 31 is on the inside, the second fitting portion inner surface 32 is fitted on the inner periphery of the winding fastening portion 91B of the second beverage can 9B, and the tip in the protruding direction is the first. It has a diameter between the outer diameter of the tightening portion 91A of the beverage can 9A and the inner diameter of the tightening portion 91B of the second beverage can 91B. 1st wall part 3 and the 2nd fitting which protrudes from the one surface side 21 of the top wall part 2 in the substantially perpendicular direction, engages with the outer periphery of the tightening part 91B of the second beverage can 9B and engages the constricted part 92B The second peripheral wall portion 4 having a shorter length in the protruding direction than the first peripheral wall portion 3 having the outer surface 41 on the inside, and the enlarged diameter portion 6 formed outward from the vicinity of the distal end portion 33 of the second peripheral wall portion 4. And an outer surface of the third fitting portion that protrudes from the enlarged diameter portion 6 in a direction substantially parallel to the second peripheral wall portion 4, fits to the outer periphery of the winding tightening portion 91 </ b> C of the third beverage can 9 </ b> C, and engages the constricted portion 92 </ b> C. A third peripheral wall portion 5 having a length in the protruding direction combined with the second peripheral wall portion 4 having 51 on the inside is longer than that of the first peripheral wall portion 3.

  According to the can cap 1 of this embodiment, it can be attached to at least three types of beverage cans 9A, 9B, 9C with different diameters of the tightening portion 91, and in particular after opening the can. Covers the side of the mouth that cannot be closed, suppresses loss of flavor and carbonic acid, and does not spill even when knocked down. And the 1st surrounding wall part 3, the 2nd surrounding wall part 4, and the 3rd surrounding wall part 5 are formed in the cylindrical shape which continued in the circumferential direction, and is a winding part of three types of drink cans 9A, 9B, 9C It can be attached to 91A, 91B, 91C in close contact. Moreover, the cap 1 for cans of this embodiment provides the enlarged diameter part 6 between the 2nd surrounding wall part 4 and the 3rd surrounding wall part 5, and the 2nd surrounding wall part 4 and the 3rd surrounding wall part 5 are stepped. By adopting a stepped structure, it is possible to cope with two beverage cans 9 (second beverage can 9B and third beverage can 9C) having a diameter close to one member. The structure of the step can not only correspond to two beverage cans 9 but can also form the first peripheral wall 3 longer, and the second beverage can 9B can be fitted deeply with the inner surface 32 of the second fitting portion. There is an effect that can be done. The second beverage can 9B can be fitted with the second fitting portion outer surface 41 of the second peripheral wall portion 4, but can be deeply fitted with the second fitting portion inner surface 32 of the first peripheral wall portion 3, so the second peripheral wall. The depth of the part 4 can be set to a minimum. If the second peripheral wall portion 4 is set deep and the third peripheral wall portion 5 is also set to a necessary depth, the combined height of the second peripheral wall portion 4 and the third peripheral wall portion 5 is increased, and the can The cap 1 is deep and not compact. However, the can cap 1 can be compactly designed by sufficiently securing the height of the third peripheral wall portion 5 in consideration of the third beverage can 9C and minimizing the height of the second peripheral wall portion 4. Since the 1st surrounding wall part 3 is formed long, the can 9B for 2nd drinks can be fitted deeply with the 2nd fitting part inner surface 32 of the 1st surrounding wall part 3, and can be engaged firmly. In addition, the can cap 1 of the present embodiment can be used for three beverage cans 9 by one even though it has a structure in which the one surface side 21 of the top wall 2 is opposed to the upper lid 93 of the beverage can 9. It looks like a baseball cap with a clean appearance and high design.

  Moreover, the cap 1 for cans of this embodiment is provided with at least one of the 1st fitting part outer surface 31, the 2nd fitting part outer surface 41, and the 3rd fitting part outer surface 51 intermittently in the circumferential direction. The constricted portion 92 is engaged by a plurality of ribs (34, 42, 52, etc.) protruding in the reduced diameter direction. Therefore, the can cap 1 according to the present embodiment can be more easily engaged with the constricted portion 92, so that it is difficult to remove the cap, and even when the opened beverage can 9 is tilted, it is difficult to remove the cap. Further, in the can cap 1 of the present embodiment, a part of the plurality of ribs (34, 42, 52, etc.) is shorter in the circumferential direction than the remaining part of the plurality of ribs. By shortening a part of the length of the rib, the winding tightening portion 91 can be easily pushed, and the long rib can maintain the engagement with the constricted portion 92 firmly. Alternatively, when the internal pressure between the can cap 1 and the beverage can 9 is increased by the carbonic acid in the opened state, the can cap 1 is disengaged at the short rib portion, and the can cap 1 is suddenly released. Suppress.

  And the cap 1 for cans of this embodiment makes the said 1st surrounding wall part 3 taper so that the 2nd fitting part inner surface 32 may incline in a diameter reduction direction toward a protrusion direction. Accordingly, when the second beverage can 9B is pushed in, the first peripheral wall portion 3 can be pushed in without getting in the way, and the upper part of the inner surface 32 of the second fitting portion is above the winding portion 91B of the second beverage can 9B. Can be fitted to the inner peripheral surface of the.

  Furthermore, the can cap 1 of the present embodiment is formed to expand from the third peripheral wall portion 5 in the diameter increasing direction, and when the pull tab 94 of the beverage can 9 is opened, the upper lid 93 and the pull tab 94 of the beverage can 9 It has a tapered wedge-shaped opening-opening portion 7 which is inserted between the front and rear surfaces of the front end portion 71 to cause a pull tab 94 and has a gradient formed on both the front and back surfaces. Since the can cap 1 of the present embodiment has the distal end portion 71, the can opening auxiliary portion 7 can be inserted deeply between the upper lid 93 and the pull tab 94. According to the can cap 1 of the present embodiment, since the tip 71 can be inserted all the way into the can, it is easy to open the can without the can opening auxiliary portion 7 being detached. Further, when the tip 71 is inserted to the back, the pull tab 94 is easily caused by the shape of the tapered raising portion 74, and the can 71 is easily opened in the process of inserting the tip 71 between the upper lid 93 and the pull tab 94. be able to.

  In addition, the can cap 1 of the present embodiment has a flat portion 22 on which the advertisement can be written on the other surface side of the top wall portion 2. According to the can cap 1 of the present embodiment, the can cap 1 in which a company name or an advertisement is written or pasted on the flat portion 22 can be attached to the beverage can 9 that is being sold. Is suitable. Even if it is the cap 1 for cans with which the drink can 9 was mounted | worn, since it can be reused even if the drink can has been used, the effect | action of an advertising effect is long. Furthermore, since a hole 73 is opened in the base portion 72 of the can opening auxiliary portion 7, advertisements and novelty goods can be attached to the hole 73. In addition, by inserting a pin into the hole 73 and retaining it somewhere, or by attaching a string-like member to the hole 73 and hanging the string-like member somewhere, the can cap 1 can be stocked without getting in the way. If the flat portion 22 is visible, the advertisement for the flat portion can be sustained.

(Other embodiments)
The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, each of the first peripheral wall portion 3, the second peripheral wall portion 4, and the third peripheral wall portion 5 is not necessarily continuous in the circumferential direction, and a divided shape may be employed. The structure in which the peripheral wall portion is continuous can ensure sealing, and the divided structure is easy to push in. Further, the shape of the peripheral wall portion is not limited to a straight shape with respect to the direction in which the peripheral wall portion is fitted, and a structure in which the diameter is increased or reduced in a direction away from the one surface side 21 of the top wall portion 2 is adopted. can do. The structure that expands the diameter is easy to push in, and the structure that contracts the diameter improves the adhesion to the can.

  And the one surface side 21 of the top wall part 2 is not limited to the shape in which the part contact | abutted to the winding part 9 is straight, The structure of the shape which has an unevenness | corrugation intermittently in the circumferential direction is also employable.

  Moreover, the position of each rib is not limited to the position demonstrated on the basis of the opening assistance part 7, but the number of each rib and a magnitude | size can be changed suitably as needed.

  Furthermore, the shape of the base portion 72 of the can opening auxiliary portion 7 is not limited to a substantially triangular shape, and the tip 71 can protrude so as to be easily inserted between the upper lid 93 and the pull tab 94, and the raising portion 94 can be secured and held to some extent. Any shape may be used as long as it has a structure.

DESCRIPTION OF SYMBOLS 1 ... Cap for cans 2 ... Top wall part 21 ... One surface side 22 ... Flat part 3 ... 1st surrounding wall part 31 ... 1st fitting part outer surface 32 ... 2nd Fitting part inner surface 33 ... tip 34, 52 ... short rib 35, 36, 53, 54 ... long rib 4 ... second peripheral wall part 41 ... second fitting part outer surface 42 to 44 ... Rib 5 ... 3rd peripheral wall part 51 ... 3rd fitting part outer surface 6 ... Diameter expansion part 7 ... Can open auxiliary part 71 ... Tip part 72 ... Base part 73. ..Hole 74 ... Raising part 9 ... Beverage can 91 ... Winding part 92 ... Constriction part 93 ... Upper lid 94 ... Pull tab

Claims (5)

Caps for cans that can be attached to each of at least three types of beverage cans in the first to third order from the smaller diameter of the tightening portion formed with the drinking mouth so as to come into close contact with each other. Because
The first to third beverage cans have a constricted portion on the lower side of the tightened portion that is wound outward.
The top wall,
Projecting from the one surface side of the top wall portion in a substantially vertical direction, having the first fitting portion outer surface engaged from the outside and engaged with the constricted portion from the outside to the winding fastening portion of the first beverage can, The inner surface of the second tightening portion of the second beverage can has an inner surface of the second fitting portion, and the front end in the protruding direction has a diameter of the outer periphery of the tightening portion of the first beverage can. A first peripheral wall portion having a diameter between the inner diameter of the winding tightening portion of the second beverage can;
Projecting in a substantially vertical direction from one surface side of the top wall portion, having a second fitting portion outer surface on the inside that fits on the outer periphery of the winding fastening portion of the second beverage can and engages the constricted portion. A second peripheral wall portion having a shorter length in the protruding direction than the first peripheral wall portion;
An enlarged diameter portion formed from the vicinity of the tip of the second peripheral wall portion toward the outside;
A third fitting portion outer surface that protrudes from the enlarged diameter portion in a direction substantially parallel to the second peripheral wall portion, engages with an outer periphery of the winding tightening portion of the third beverage can, and engages with the constricted portion. A third peripheral wall portion having a length in the protruding direction combined with the second peripheral wall portion is longer than the first peripheral wall portion;
A cap for cans.   At least one of the outer surface of the first fitting portion, the outer surface of the second fitting portion, and the outer surface of the third fitting portion is formed by a plurality of ribs protruding in the reduced diameter direction provided intermittently in the circumferential direction. The can cap according to claim 1, wherein the cap is engaged with the constricted portion.   The can cap according to claim 2, wherein a part of the plurality of ribs has a circumferential length shorter than a remaining portion of the plurality of ribs.   The cap for cans according to any one of claims 1 to 3, wherein the first peripheral wall portion is tapered such that the inner surface of the second fitting portion is inclined in the diameter reducing direction toward the protruding direction.   A tip portion that is extended in the diameter increasing direction from the third peripheral wall portion, and is inserted between an upper lid of the beverage can and the pull tab when opening the pull tab of the beverage can, thereby causing the pull tab. The cap for cans according to any one of claims 1 to 4, further comprising a can opening assisting portion having a tapered wedge shape in which a slope is formed on both of the front and back surfaces.

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