JP4747151B2 - Pull-top opening sealer for beverage cans - Google Patents

Description

  The present invention relates to a pull-top open beverage can in which beverages such as soft drinks (for example, coffee) and alcoholic beverages (for example, beer) are placed, with the beverage remaining in the opened can. The present invention relates to a pull-top opening sealing device for beverage cans used when sealing and storing a pull-top opening.

There exists a thing of patent document 1 as a pull top opening sealing tool of the conventional drink can. The sealing tool described in Patent Document 1 is an adhesive seal, and the pull-top opening is sealed and the sealing tool is fixed by sticking around the opened pull-top opening.
Japanese Utility Model Publication No. 5-89262

  However, since the conventional sealing device described above is an adhesive seal, the sealing device comes off when the beverage can is collapsed and the sealing device is pressed by the beverage remaining in the can. As a result, the beverage in the can may leak, and repeated use is difficult.

Therefore, the problem to be solved by the present invention is a beverage can that can be easily attached to a beverage can and can reliably seal the pull-top opening without causing an unintentional dropout from the beverage can and the like. It is providing the pull top opening sealing device.

In order to solve the above-mentioned problems, in the invention of claim 1, there is provided a pull-top opening sealing device for a beverage can that seals a pull-top opening that has been opened by being pressed down by a base pressing portion of a pull-top tab, A plurality of engaging portions detachably engaged with a caulking portion that joins the upper lid portion and the body portion of the beverage can, and the engaging portion is slid from substantially the side of the upper lid portion; A main body part mounted on the upper lid part by engaging with the caulking part; an opening / closing part coupled to the main body part so as to be able to open and close in a direction approaching and separating from the upper lid part; and the opening / closing part By engaging the opening / closing portion when the door is closed, the locking portion that locks the opening / closing portion in the closed position, and the engagement state between the locking portion and the opening / closing portion based on the applied operating force. The operation unit to be released and the opening / closing unit Provided on the surface facing the upper lid, and when the opening / closing portion is closed with the main body mounted on the upper lid, the pull top opening is sealed in close contact with the peripheral edge of the pull top opening And a sealing portion.

  Moreover, in invention of Claim 2, in the pull top opening sealing tool of the drink can which concerns on invention of Claim 1, when the said main-body part is mounted | worn with the said upper cover part, the said sealing part is said upper cover part An insertion tip portion projecting inwardly in the radial direction, and the insertion tip portion is in a state where the main body portion is attached to the upper lid portion so that the opening / closing portion is positioned substantially above the pull-top opening. When the opening / closing portion is closed, the pull-top tab is inserted below the base push-down portion, and is in close contact with the radially inner portion of the upper lid portion at the peripheral edge portion.

  Moreover, in invention of Claim 3, in the pull top opening sealing tool of the beverage can which concerns on invention of Claim 1 or Claim 2, the said sealing part is couple | bonded with the said surface of the said opening-closing part. An attachment portion, and a second attachment portion coupled to the first attachment portion via a bent portion, and increasing or decreasing an interval between the first attachment portion and the second attachment portion. A support member in which the bent portion is elastically deformed with respect to an external force, and a substantially rubber-like elasticity, disposed on the second mounting portion of the support member, and the peripheral portion of the pull-top opening And a sealing material in close contact with.

  According to a fourth aspect of the present invention, in the pull top opening sealing device for a beverage can according to the second aspect of the present invention, the sealing member is provided on the lower surface side of the main body, and the opening / closing portion is positioned substantially above the pull top opening. When the main body portion is attached to the upper lid portion, a pull-top push-down portion that pushes the pull-up portion downward when the pull-up portion of the pull-top tab is raised obliquely is further provided.

  According to a fifth aspect of the present invention, in the beverage can pull top opening sealing device according to the second or fourth aspect of the present invention, the main body is attached to the beverage can when the beverage can is A base portion extending so as to be substantially parallel to the top plate, and a coupling portion coupled to the opening / closing portion, and the coupling portion has a rotation shaft when the opening / closing portion is opened / closed. It protrudes upward from the upper surface of the base portion so as to be positioned above the upper surface of the base portion.

The invention according to claim 6 is a pull-top opening sealing device for a beverage can that seals the pull-top opening that is opened by the mouthpiece being pushed down by the mouth-pressing portion of the mouthpiece of the pulltop tab, and the upper lid of the beverage can A plurality of engaging portions that are detachably engaged with the caulking portion that couples the body portion and the body portion, and engages the engaging portion with the caulking portion so as to slide from substantially the side of the upper lid portion. The main body portion to be attached to the upper lid portion and the lower surface side of the main body portion, and when the main body portion is attached to the upper lid portion, closely attached to the peripheral edge portion of the pull top opening And a sealing portion for sealing the pull-top opening.

  According to a seventh aspect of the present invention, there is provided a pull-top opening sealing device for a beverage can according to the sixth aspect of the present invention, wherein the pull-top insertion is provided on the lower surface side of the main body portion and receives and holds the pull-up portion of the pull-top tab. The sealing portion is further provided with the sealing portion after the body portion is slid from the direction in which the pull-up portion of the pull-top tab is inserted into the pull-top insertion portion and attached to the upper lid portion. As the pull top opening sealing member is rotated together with the pull top tab so as to face the pull top opening, the pull top opening comes into close contact with the peripheral edge of the pull top opening.

  Moreover, in invention of Claim 8, in the pull-top opening sealing tool of the drink can of Claim 7, when the said main-body part is mounted | worn with the said upper cover part, the said sealing part is the said upper cover part. An insertion tip portion projecting inward in the radial direction, and the insertion tip portion is slid from the direction in which the pull-up portion of the pull-top tab is inserted into the pull-top insertion portion to the upper lid portion. The pull-top opening sealing device is inserted under the portion of the pull-top tab that is positioned around the fixing portion of the pull-top tab and fixed to the can main body so that the sealing portion faces the pull-top opening. Is rotated together with the pull-top tab, and closely contacts the radially inner side portion of the upper lid at the peripheral edge of the pull-top opening.

  According to a ninth aspect of the present invention, in the pull top opening sealing device for a beverage can according to the sixth aspect of the present invention, the sealing portion includes the upper lid portion when the main body portion is attached to the upper lid portion. The insertion tip portion is attached to the upper lid portion by sliding the main body portion from the direction corresponding to the pull-top opening. Accordingly, the pull-top tab is inserted below the base push-down portion, and is in close contact with the radially inner side portion of the upper lid portion at the peripheral edge portion.

According to the first aspect of the present invention, since the plurality of engaging portions provided in the main body portion are configured to engage with the caulking portion that joins the upper lid portion and the trunk portion of the beverage can, Unintentional dropout of the sealing tool from the beverage can can be reliably prevented.

  In addition, since the pull-top opening sealing device is mounted by engaging the engaging portion with the caulking portion so as to slide from substantially the side of the upper lid portion of the beverage can, the beverage of the pull-top opening sealing device is used. It can be easily attached to the can, and the pull-top opening sealer can be easily attached to and detached from the beverage can.

  In addition, when the opening / closing part is closed with the body part of the pull-top opening sealing device attached to the top lid part of the beverage can, the sealing part closely contacts the peripheral part of the pull-top opening and seals the pull-top opening. Therefore, the pull top opening of the beverage can can be reliably sealed.

  Moreover, since the opening / closing part provided with the sealing part is coupled to the main body part so as to be opened and closed, the sealing part does not get in the way when the main body part is attached to the beverage can, and the beverage of the main body part It can be easily attached to the can.

  In addition, since the opening and closing part is provided with a sealing part, the opening and closing of the opening and closing part can be used to seal and open the pull-top opening while the body part of the sealing device is still attached to the beverage can. It is.

  According to the second aspect of the present invention, the pull-top opening is surely secured even in the case of a beverage can of the Stay-on tab type where the pull-top tab remains without being detached from the can body at the time of opening. Can be sealed. That is, in the steion tab type beverage can, since the base push-down portion of the pull-top tab remains on the pull-top opening even after opening, the pull-down portion of the pull-top tab at the peripheral edge of the pull-top opening The problem is how to seal the lower portion. In this regard, in the present invention, when the opening / closing part is closed with the main body part mounted on the upper lid part so that the opening / closing part is positioned substantially above the pull-top opening, the insertion tip of the sealing part is It is inserted below the base pressing part of the pull top tab and is in close contact with the radially inner side portion of the upper lid part at the peripheral edge of the pull top opening. Thereby, it is possible to surely seal the portion located below the base pressing portion of the pull top tab at the peripheral edge of the pull top opening.

  According to the invention of claim 3, when the main body portion is mounted on the upper lid portion of the beverage can and the opening / closing portion is closed, the sealing material is formed by the elasticity of the bent portion of the supporting member of the sealing portion. Can be brought into close contact with the peripheral edge of the pull-top opening of the beverage can with an appropriate pressing force. This further improves the reliability of sealing the pull top opening of the beverage can.

  According to the invention of claim 4, when the main body is mounted on the upper lid so that the pull-top push-down portion provided on the lower surface side of the main body is positioned above the pull-top opening, When the pulling-up portion of the pull-top tab is raised obliquely, the pulling-up portion is pushed downward, and thereby the base-pressing portion of the pull-top tab is raised upward. For this reason, it is possible to facilitate the insertion of the pull-top tab at the insertion tip of the sealing portion into the lower side of the base push-down portion, and to further improve the reliability of sealing the pull-top opening.

  According to the invention described in claim 5, the coupling portion of the main body portion projects upward from the upper surface of the base portion so that the rotation shaft when the opening and closing portion is opened and closed is located above the upper surface of the base portion. It is installed. For this reason, when the opening / closing part is closed, the insertion tip of the sealing part can be inserted into the lower side of the pull-down part of the pull-top tab from a direction closer to parallel to the top plate of the beverage can. Accordingly, even when the base push-down portion of the pull-top tab is displaced slightly downward, the insertion tip of the sealing portion can be reliably inserted below the base push-down portion.

According to the invention described in claim 6, since the plurality of engaging portions provided in the main body portion are engaged with the caulking portion that joins the upper lid portion and the trunk portion of the beverage can, Unintentional dropout of the sealing tool from the beverage can can be reliably prevented.

  In addition, since the pull-top opening sealing device is mounted by engaging the engaging portion with the caulking portion so as to slide from substantially the side of the upper lid portion of the beverage can, the beverage of the pull-top opening sealing device is used. It can be easily attached to the can, and the pull-top opening sealer can be easily attached to and detached from the beverage can.

  According to the seventh aspect of the present invention, after the main body portion is slid from the direction in which the pull-up portion of the pull-top tab is inserted into the pull-top insertion portion and attached to the upper lid portion, the sealing portion is opposed to the pull-top opening. As the main body is rotated together with the pull top, the sealing portion is brought into close contact with the peripheral edge of the pull top opening for sealing. For this reason, the pull top opening of the beverage can can be sealed by a simple mounting operation.

  When the pull-top opening seal is rotated with the pull-up tab pull-up portion inserted into the pull-top insertion portion and the main body mounted on the upper lid, the pull-top tab is also fixed to the can main body. As a result, the base push-down portion of the pull top tab is moved outward from the pull top opening. As a result, even in the case of a beverage can of the steion tab type, the sealing portion can be easily adhered to the peripheral edge of the pull top opening without interfering with the base push-down portion of the pull top tab. Can be reliably sealed.

  According to the invention described in claim 8, the insertion tip of the sealing portion is positioned around the fixing portion of the pull-top tab with the can body as the main body portion is slid and attached to the upper lid portion. As the pull-top opening seal is rotated together with the pull-top tab so that the sealing portion faces the pull-top opening, the inner portion in the radial direction of the upper lid portion at the peripheral edge of the pull-top opening is inserted. Close contact with the side part. For this reason, it can seal more reliably also about the part located below the part located in the circumference | surroundings of the fixing | fixed part with the can main body in the pull top tab in the peripheral part of pull top opening.

  According to the invention described in claim 9, as the pull-top opening sealing tool is slid from the side of the beverage can on the side of the beverage can and attached, the sealing portion comes into close contact with the peripheral edge of the pull-top opening. Since the sealing is performed, the pull top opening of the beverage can can be sealed by a simple mounting operation.

  Further, even in the case of a steion tab type beverage can, the pull-top opening can be reliably sealed. That is, as the main body portion is slid from the direction corresponding to the opening of the pull top and attached to the upper lid portion, the insertion tip of the sealing portion is positioned below the base pressing portion of the pull top tab. It is inserted and is in close contact with the radially inner portion of the upper lid at the peripheral edge of the pull top opening. Thereby, it is possible to surely seal the portion located below the base pressing portion of the pull top tab at the peripheral edge of the pull top opening.

[First Embodiment]
FIG. 1 is a top view of a pull-top opening sealing device (hereinafter simply referred to as “sealing device”) of a beverage can according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the line A1-A1 of FIG. 1, FIG. 4 is a cross-sectional view showing a part omitted along the line A2-A2 of FIG. 5 is a view showing a state in which the opening / closing portion is opened in the cross-sectional view of FIG. 3, and FIG. 6 is a plan view of the lock member of the sealing device of FIG.

  As shown in FIG. 9 and the like, the sealing device 1 according to this embodiment is a pull-top opening type beverage can (in particular, a steion tab type in which the pull top tab remains without being removed from the can body at the time of opening). Used to seal two pull top openings 3.

  Here, with reference to FIG.9 and FIG.10, the structure of the pull top tab 4 and the pull top opening 3 is demonstrated easily. The pull top tab 4 is attached to the can body by a tab fixing portion 5 using a rivet or the like. By pulling the ring-shaped pulling-up portion 4a of the pull-top tab 4 upward, the base-pressing portion 4b of the pull-top tab 4 pushes the base downward, whereby the pull-top opening 3 is opened. On the side of the lifting portion 4a in the peripheral portion of the tab fixing portion 5 of the pull-top dove 4, an extending portion 4c extending to the lifting portion 4a side is provided.

  As shown in FIGS. 1 to 6, the sealing tool 1 includes a main body part 11, an opening / closing part 12, a lock member 13 as a lock part and an operation part, a sealing part 14, and a pull-top push-down part 15. I have.

The main body 11 includes a base portion 21, left and right engaging portions 22, a rear engaging portion 23, and a shaft support portion 24 as a coupling portion. The base portion 21 is disposed substantially parallel to the top plate 6 above the top plate 6 of the beverage can 2 when the sealing tool 1 is attached to the beverage can 2. It covers the area. The left and right engaging portions 22 are detachably engaged by being fitted from both left and right sides into groove-like recesses that are continuous in the circumferential direction below the caulking portion 9 that joins the upper lid portion 7 and the body portion 8 of the beverage can 2. (See FIG. 4). The rear engaging portion 23 is fitted into the concave portion on the lower side of the caulking portion 9 from the rear side so as to be detachably engaged (see FIG. 10). The contact surface of each engaging portion 22, 23 with the peripheral surface of the beverage can 2 has an arc shape along the peripheral surface of the beverage can 2.

  And the main body part 11 is a state in which the right and left engaging parts 22 are caulked by sliding from substantially the side of the upper lid part 7 as shown in FIG. 9 described later with the opening / closing part 12 described later opened. By being engaged with 9, it is attached to the upper lid portion 7. At this time, the left and right engaging portions 22 having arcuate contact surfaces are fitted to the peripheral surface of the beverage can 2, whereby the main body portion 11 is positioned at a predetermined position on the upper lid portion 7 (for example, In the case of the present embodiment, the rotation shaft 24a of the shaft support portion 24 to be described later is positioned at a position passing through the substantially central axis of the upper lid portion 7). Further, as the main body portion 11 is attached to the upper lid portion 7, the rear engaging portion 23 engages with the caulking portion 9.

  In addition, such engaging parts 22 and 23 extend a part of the outer edge part of the board | plate material which comprises the base part 21 outward, for example, and bend the extended part below in the cross-sectional substantially U shape. Is formed. Further, the rear engaging portion 23 can be omitted.

  The shaft support part 24 supports the opening / closing part 12 so that the opening / closing part 12 opens and closes in a direction approaching and separating from the upper lid part 7. The shaft support portion 24 protrudes upward from the upper surface of the base portion 21 so that the rotation shaft 24 a of the opening / closing portion 12 is positioned above the upper surface of the base portion 21. The shaft support 24 is provided with a helical spring 24b that urges the opening / closing portion 12 in the opening direction around the rotation shaft 24a. The helical spring 24b is not necessarily essential and may be omitted.

  The opening / closing part 12 is pivotally supported by a shaft support part 24 in a state where the opening / closing operation is possible on the front side of the base part 21 of the main body part 11. When closed, the opening / closing part 12 is connected in parallel with the base part 21 (the state shown in FIGS. 1 and 3). When the opening / closing part 12 is in the closed position, the opening / closing part 12 is locked by a lock member 13 described later, and is held in the closed position until the lock is released. When the lock by the lock member 13 is released, the opening / closing part 12 can be rotated above the base part 21, for example, as shown in FIG. 5 (or at a larger opening angle than the state of FIG. 5). As the lock by the lock member 13 is released, the opening / closing part 12 is rotated upward from the closed position by the biasing force of the helical spring 24b.

  Engagement recesses 12a into which lock portions 26b (described later) of the lock member 13 are fitted and engaged are provided on the left and right side surfaces of the opening / closing portion 12 as described above.

  When the opening / closing part 12 is closed (when set to the closed position), the lock member 13 engages with the opening / closing part 12 to lock the opening / closing part 12 in the closed position, and an operation given by the operator Based on the force, the engaged state with the opening / closing part 12 is released (unlocked). Various configurations can be employed as the specific configuration of the lock member 13, but the configuration shown in FIG. 6 and the like is employed in the present embodiment.

  The lock member 13 shown in FIG. 6 and the like is a plate-like member made of resin as a whole and divided into left and right, and is provided at the left and right arm portions 26 and a portion connecting the left and right arm portions 26. And an operation unit 27. A support hole 26 a in which a fixing tool 28 such as a bolt is inserted into the base portion 21 of the main body portion 11 is provided in an intermediate portion of each arm portion 26. The inner part of the tip of each arm part 26 is a lock part 26 b that engages with the engagement recess 12 a of the opening / closing part 12. Further, the portion (bending portion 29) where the left and right arm portions 26 and the operation portion 27 are coupled so as to form a substantially right angle is the arm portion when the operation portion 27 is pressed and moved in the direction of the arrow B1 by the operation force. 26 and the operation portion 27 are elastically deformed so that an angle (bending angle) formed therebetween becomes small. Along with this deformation, the left and right arm portions 26 rotate around the support hole 26a, and accordingly, the lock portions 26b of the left and right arm portions 26 are moved outward as indicated by an arrow B2. Then, as the operation force on the operation unit 27 is released, the deformation of the bent portion 29 returns to the original state, whereby the operation unit 27 and the lock unit 26b return to their original positions.

  As shown in FIG. 7, the upper surfaces 26c of the left and right lock portions 26b are inclined surfaces inclined obliquely downward toward the inner side in the left-right direction. As a result, when the opening / closing part 12 is closed, the edges on the lower surfaces of the left and right ends of the opening / closing part 12 move downward while being in sliding contact with the upper surface 26c of the lock part 26b. Bending outward in the left-right direction, the lock portion 26b is pushed outward as indicated by arrow B2. Then, as shown in FIG. 8, as the opening / closing part 12 reaches the closed position, the left and right lock parts 26b return inward in the left-right direction indicated by the arrow B3, and are fitted into the engaging recesses 12a of the opening / closing part 12. The jamming and the movement of the opening / closing part 12 are stopped (locked). When opening the opening / closing part 12, as described above, the operation part 27 of the lock member 13 is pressed and moved in the direction of arrow B1 (forward), and the left and right lock parts 26b are moved in the direction of arrow B2 (outward in the left-right direction). The engagement between the lock portion 26b and the engagement recess 12a is released (the lock is released). Along with this unlocking, the opening / closing part 12 is opened so as to be flipped upward by the biasing force of the helical spring 24b.

  The sealing portion 14 is provided on the surface (the lower surface when in the closed position) facing the upper lid portion 7 of the beverage can 2 in the opening / closing portion 12, and the opening / closing portion is attached to the upper lid portion 7. When 12 is closed, the pull-top opening 3 is sealed in close contact with the peripheral edge of the pull-top opening 3. Such a sealing portion 14 includes a support member 31, a sealing material 32, a pressing member 33, a fixture 34 as a fixing means, and an auxiliary member 35.

  The support member 31 includes a first attachment portion 31a coupled to the lower surface of the opening / closing portion 12, and a second attachment portion 31c coupled to the first attachment portion 31a via a bent portion 31b. And the bending part 31b elastically deforms with respect to the external force which increases / decreases the space | interval between the 1st attachment part 31a and the 2nd attachment part 31c. In the present embodiment, the support member 31 is configured as a separate member from the member constituting the opening / closing part 12 and is joined with an adhesive or the like. However, these are configured by a single continuous member. Also good.

  The sealing material 32 is a sheet-like member having substantially rubber-like elasticity (for example, a rubber sheet material such as silicon rubber), and is disposed so as to overlap the second attachment portion 31c of the support member 31. The pull top opening 3 is sealed in close contact with the peripheral edge. The outer size of the sealing material 32 is set to be slightly larger than the outer size of the pull top opening 3. Since the sealing material 32 has substantially rubber-like elasticity, the unevenness located at the peripheral edge of the pull-top opening 3 can be absorbed and securely adhered to the peripheral edge.

  The pressing member 33 is a substantially plate-like member whose cross section is finished in a predetermined bent shape, and supports the sealing material 32 so as to be sandwiched between the second mounting portion 31 c of the supporting member 31. The pressing member 33 also plays a role of adjusting the posture (or shape) of the front end side (particularly, the insertion distal end portion 32a) of the sealing material 32.

  The fixture 34 includes, for example, a pin member 34a (for example, a bolt) having a large-diameter head, and a ring member 34b (for example, a nut) that is externally fitted to the leg portion of the pin member 34a. Then, in a state where the leg portion of the pin member 34a of the pin member 34a is passed through the through holes provided in the second attachment portion 31c, the sealing material 32, and the pressing member 33, the ring member 34b is attached to the leg portion. By fitting, the second attachment portion 31c and the pressing member 33 are fixed in a state where the sealing material 32 is sandwiched therebetween.

  The auxiliary member 35 is a substantially plate-like member disposed between the second attachment portion 31 c of the support member 31 and the rear end side portion of the sealing material 32, and is provided on the rear end side of the sealing material 32. It plays the role of adjusting the posture (or shape) of the part.

  With such a configuration of the sealing portion 14, when the opening / closing portion 12 is closed in a state where the main body portion 11 is mounted on the upper lid portion 7 so that the opening / closing portion 12 is positioned substantially above the pull-top opening 3, The sealing material 32 is brought into close contact with the peripheral edge of the pull top opening 3, and the pull top opening 3 is sealed. At this time, due to the elasticity of the bent portion 31 b of the support member 31, the sealing material 32 can be brought into close contact with the peripheral portion of the pull-top opening 3 with an appropriate pressing force. Thereby, the reliability of sealing of the pull top opening 3 is improved.

  In addition, the sealing material 32 of the sealing portion 14 has an insertion tip portion that protrudes radially inward of the upper lid portion 7 when the main body portion 11 is attached to the upper lid portion 7 of the beverage can 2. 32a is provided (see FIG. 3). The insertion tip portion 32a is formed when the opening / closing portion 12 is closed with the main body portion 11 attached to the upper lid portion 7 so that the opening / closing portion 12 is positioned substantially above the pull-top opening 3. It is inserted below the base push-down portion 4b and is in close contact with the radially inner side portion of the upper lid portion 7 at the peripheral edge of the pull-top opening 3 (see FIG. 10). Accordingly, even in the case of the steion tub type beverage can 2, the pull-top opening 3 can be reliably sealed.

  In the present embodiment, together with the insertion tip portion 32 a of the sealing material 32, the tip portion of the pressing member 33 is also inserted below the base push-down portion 4 b, and the insertion tip of the sealing material 32 is inserted by the tip portion of the pressing member 33. The portion 32 a is pressed against the peripheral edge of the pull top opening 3. For this reason, the front-end | tip part of this pressing member 33 can also be grasped as a part of the insertion front-end | tip part which concerns on this invention.

  The pull-top push-down portion 15 is provided on the lower surface side of the base portion 21 of the main body portion 11, and the main body portion 11 is attached to the upper lid portion 7 of the beverage can 2 so that the opening / closing portion 12 is positioned substantially above the pull-top opening 3. When the pulling-up portion 4a of the pull-top tab 4 is raised obliquely upward, the pulling-up portion 4a is pushed downward. As a result, the base pressing portion 4b of the pull top tab 4 is raised upward. For this reason, it is possible to facilitate the insertion of the sealing material 32 into the lower side of the base push-down portion 4b of the insertion tip portion 32a, and the sealing reliability of the pull-top opening 3 can be further enhanced.

  In addition, the front surface and the rear surface of the pull-top push-down portion 15 are inclined or curved so that the pull-top push-down portion 15 is caught on the pull-top tab 4 and does not obstruct the slide operation when the sealing device 1 accompanied by the slide operation is attached or detached. It is a surface. In the present embodiment, the pull-top push-down portion 15 is configured as a separate member from the member constituting the base portion 21 of the main body portion 11, and both are joined with an adhesive or the like. However, both are configured as a single continuous member. May be.

  Further, in the sealing tool 1 according to the present embodiment, as described above, the shaft support portion 24 of the main body portion 11 is positioned above the upper surface of the base portion 21 so that the rotation shaft 24a when the opening and closing portion 12 is opened and closed. In this manner, the base portion 21 protrudes upward from the upper surface. For this reason, when the opening / closing part 12 is closed, the insertion tip 32a of the sealing member 32 of the sealing part 14 is pushed down from the direction closer to the top plate 6 of the beverage can 2 than the base of the pull-top tab 4 It can be inserted below the portion 4b. As a result, even when the base push-down portion 4b is displaced slightly downward, the insertion tip 32a of the sealing material 32 can be reliably inserted below the base push-down portion 4b.

  Here, the main body part 11 and the opening / closing part 12 in the above-described sealing tool 1 are configured by arranging a plurality of resin plate materials so as to overlap each other. You may form with one resin member. Alternatively, the shaft support part 24 that couples the main body part 11 and the opening / closing part 12 may be a thin-walled hinge part, and the main body part 11 and the opening / closing part 12 may be formed of a single continuous resin member. Or you may comprise both or any one of the main-body part 11 and the opening-and-closing part 12 with a metallic member.

  Next, with reference to FIG.9 and FIG.10, the attachment / detachment operation of the sealing tool 1 is demonstrated. When the sealing tool 1 is mounted, the pull top on the side of the upper lid portion 7 with the opening / closing portion 12 opened and the portion where the opening / closing portion 12 is provided facing forward as shown in FIG. The left and right engaging portions 22 are engaged with the caulking portion 9 so as to slide from the direction opposite to the side where the opening 3 is provided (the side where the pulling portion 4a of the pull top tab 4 is provided). Accordingly, the rear engaging portion 23 is also engaged with the caulking portion 9. As a result, the main body portion 11 of the sealing tool 1 is attached to the upper lid portion 7. At this time, the opening / closing part 12 is located above the pull-top opening 3.

  Subsequently, as shown in FIG. 10, by closing the opening / closing part 12, the sealing material 32 comes into close contact with the peripheral edge of the pull top opening 3, and the pull top opening 3 is sealed. As the opening / closing portion 12 is closed, the left and right locking portions 26b of the locking member 13 engage with the engaging recess 12a of the opening / closing portion 12, and the opening / closing portion 12 is locked in the closed position.

  When removing the sealing tool 1, first, the operation part 27 of the lock member 13 is pressed as described above, and the lock of the opening / closing part 12 by the lock member 13 is released. Along with this unlocking, the opening / closing part 12 is released so as to be flipped upward by the urging force of the helical spring 24b. In this state, since the pull-top opening 3 is opened with the opening / closing part 12 being opened, the beverage can be taken out from the pull-top opening 3. That is, by opening and closing the opening / closing part 12, the pull-top opening 3 can be sealed and opened while the main body part 11 of the sealing tool 1 is still attached to the beverage can 2.

  Subsequently, by sliding the sealing tool 1 in the radial direction of the upper lid part 7 with the rear side part (the part opposite to the part where the opening / closing part 12 is provided) being the leading side, the engaging parts 22, 23 is disengaged from the caulking portion 9.

As described above, according to the sealing tool 1 according to the present embodiment, the plurality of engaging portions 22 and 23 provided in the main body portion 11 are coupled to the upper lid portion 7 and the trunk portion 8 of the beverage can 2. Since it is the structure engaged with the caulking part 9, the unintentional drop-off etc. from the drink can of the sealing tool 1 can be prevented reliably.

  In addition, since the left and right engaging portions 22 are engaged with the caulking portion 9 so as to slide from substantially the side of the upper lid portion 7, the sealing device 1 is mounted. The can 2 can be easily mounted and the sealing tool 1 can be easily attached to and detached from the beverage can 2 for repeated use.

  Further, when the opening / closing part is closed with the main body part 11 of the sealing tool 1 mounted on the upper lid part 7 of the beverage can 2, the sealing part 14 is brought into close contact with the peripheral part of the pull-top opening 3 and the pull-top. Since the opening 3 is sealed, as described above, the pull-top opening 3 of the beverage can can be reliably sealed while avoiding obstacles such as the base push-down portion 4b of the pull-top tab 4.

  Moreover, since the opening / closing part 12 provided with the sealing part 14 is coupled to the main body part 11 so as to be opened and closed, the sealing part 14 may become an obstacle when the main body part 11 is attached to the beverage can 2. The body portion 11 can be easily attached to the beverage can 2.

  In addition, since the opening / closing part 12 is provided with the sealing part 14, the pull-top opening 3 can be opened while the body part 11 of the sealing tool 1 is still attached to the beverage can 2 by opening / closing the opening / closing part 12. Convenient to seal and open.

  As a modification of the sealing portion 14 according to the first embodiment described above, the sealing material 32 may be directly fixed to the second attachment portion 31c of the support member 31 as shown in FIG. In this case, as a fixing means for the sealing material 32, for example, an adhesive, a double-sided tape or the like is used. As another modification, a bag-like sealing material 32 may be attached to the attachment portion 31c so as to cover the second attachment portion 31c of the support member 31, or the first may be formed by in-mold molding or the like. The sealing material 32 may be formed so as to cover the periphery of the two attachment portions 31c.

[Second Embodiment]
FIG. 12 is a top view of a pull-top opening sealing device (hereinafter simply referred to as “sealing device”) of a beverage can according to a second embodiment of the present invention, and FIG. 13 is a front view of the sealing device. 14 is a cross-sectional view taken along the line A3-A3 in FIG. 12, and FIG. 15 is a cross-sectional view shown by omitting a part along the line A4-A4 in FIG.

  As in the case of the sealing device 1 according to the first embodiment, the sealing device 1A according to the present embodiment has a pull-top opening type (particularly, a steion tab type) pull-top opening of the beverage can 2. 3 is used for sealing. In addition, as a method of mounting this sealing tool 1A on the beverage can 2, a first mounting method shown in FIGS. 16 to 20 described later and a second mounting method shown in FIGS. 21 to 23 described later are used. There is.

  As shown in FIGS. 12 to 15, the sealing tool 1 </ b> A includes a main body portion 41, a sealing portion 42, and a pull top insertion portion 43.

  The main body portion 41 includes a base portion 51, left and right engaging portions 52, and a rear engaging portion 53. The base portion 51 is disposed substantially parallel to the top plate 6 above the top plate 6 of the beverage can 2 when the sealing tool 1A is attached to the beverage can 2 and is about half of the top plate 6. It covers the area. The left and right engaging portions 52 are detachably engaged by fitting into the lower recesses of the caulking portion 9 of the beverage can 2 from the left and right sides (see FIG. 15). The rear engaging portion 53 is removably engaged by fitting into the lower concave portion of the caulking portion 9 from the rear side (see FIG. 18 or FIG. 23). The contact surfaces of the engaging portions 52 and 53 with the peripheral surface of the beverage can 2 have an arc shape along the peripheral surface of the beverage can 2.

  Then, as shown in FIG. 16 and the like, which will be described later, the main body portion 41 engages the caulking portion 9 with the left and right engaging portions 52 so as to slide from substantially the side of the upper lid portion 7. It is attached to. At this time, the left and right engaging portions 22 having arcuate contact surfaces are fitted to the peripheral surface of the beverage can 2, whereby the main body portion 11 is positioned at a predetermined position on the upper lid portion 7. Further, as the main body portion 41 is attached to the upper lid portion 7, the rear engaging portion 53 engages with the caulking portion 9.

  In addition, such engaging parts 52 and 53 extend a part of the outer edge part of the board | plate material which comprises the base part 51 outward, for example, and bend the extended part below in the cross-sectional substantially U shape. Is formed. Further, the rear engaging portion 53 can be omitted.

  The sealing part 42 seals the pull-top opening 3 in close contact with the peripheral part of the pull-top opening 3 when the main body 41 is mounted on the upper lid part 7 of the beverage can 2. The sealing portion 42 includes a sealing material 54 and a support portion 55 that supports the sealing material 54.

  The support portion 55 is provided so as to protrude downward from the lower surface of the base portion 51 of the main body portion 41 and has a hollow structure opened to the front side of the sealing tool 1A. However, it functions as the pull top insertion portion 43. In the present embodiment, the support portion 55 and the base portion 51 of the main body portion 41 are formed as separate members, and both of them are joined with an adhesive or the like. However, the support portion 55 and the base portion 51 are connected continuously. You may comprise by one member.

  The sealing material 54 is a substantially rubber-like sheet-like member (for example, a rubber sheet material such as silicon rubber), and a fixing means (for example, an adhesive or an adhesive or the like) is attached to the lower surface of the bottom wall portion 55a of the support portion 55. It is fixed by a double-sided tape or the like, and is in close contact with the peripheral edge of the pull-top opening 3 and sealed. The outer size of the sealing material 54 is set somewhat larger than the outer size of the pull top opening 3. Since the sealing material 32 has substantially rubber-like elasticity, the unevenness located at the peripheral edge of the pull-top opening 3 can be absorbed and securely adhered to the peripheral edge.

  At the edge of the bottom wall portion 55a of the support portion 55 on the front end side (the radially inner side of the upper lid portion 7 of the beverage can 2), the sealing tool 1A is supported when the beverage can 2 is mounted. An arc-shaped relief portion (notch portion) 55 b is provided so that the portion 55 does not interfere with the fixing portion 5 of the pull top tab 4. In the present embodiment, a notch portion is provided on the front end side of the sealing material 54 corresponding to the relief portion 55b of the support portion 55a. However, the sealing material 54 is not provided with a notch portion and is provided on the front end side. The edge portion may have a linear shape.

  In addition, the outer wall surface 55c on the rear side of the support portion 55 is formed on an edge portion where the support portion 55 rises above the upper lid portion 7 when the sealing tool 1A is slid substantially sideways from the beverage can 2 and removed. It is set as an inclined surface or a curved surface so as not to be caught.

  With such a configuration of the sealing portion 42, when the main body portion 41 is attached to the upper lid portion 7 so that the sealing portion 42 is positioned above the pull top opening 3, the sealing material 54 is the peripheral edge of the pull top opening 3. The pull top opening 3 is sealed.

  Further, the front end portion of the sealing material 54 of the sealing portion 42 is aligned with the front end portion of the support portion 55 when the main body portion 41 is attached to the upper lid portion 7 of the beverage can 2 in the radial direction. An insertion tip portion 42a is formed to project inward (see FIG. 14 and the like).

  This insertion tip portion 42a is attached to the upper lid portion 7 by sliding the main body portion 41 from the direction in which the pulling portion 4a of the pull-top tab 4 is inserted into the pull-top insertion portion 43 by a first attachment method described later. Along with this, the portion of the pull-top tab 4 located around the fixing portion 5 (in this embodiment, the extended portion 4c projecting from the fixing portion 5 to the drawing portion 4a side) is inserted below (see FIG. 18). As the sealing tool 1A is rotated together with the pull-top tab 4 so that the sealing portion 42 faces the pull-top opening 3, it closely adheres to the radially inner side portion of the upper lid portion 7 at the peripheral edge of the pull-top opening 3. (See FIG. 20). In this connection, the upper surface side of the front end portion of the support portion 55 (for example, the inner peripheral portion of the escape portion 55b) is a tapered surface so that the insertion of the pull top tab 4 below the extended portion 4c is easy. It is.

  Further, the insertion tip portion 42a is attached to the base of the pull-top tab 4 as the main body portion 41 is attached to the upper lid portion 7 in a direction corresponding to the pull-top opening 3 by a second attachment method described later. It is inserted below the push-down portion 4b and is in close contact with the radially inner side portion of the upper lid portion 7 at the peripheral edge of the pull-top opening 3 (see FIG. 23).

  The pull top insertion portion 43 is configured by the hollow portion of the support portion 55 as described above, and receives and holds the pulling portion 4a of the pull top tab 4 from the opening on the front side. The pull top insertion portion 43 is used for rotating the pull top tab 4 in a first mounting method described later. In addition, when the sealing tool 1A is mounted on the beverage can 2 exclusively by the second mounting method described later, the pull-top insertion portion 43 may be omitted.

  Next, with reference to FIG. 16 thru | or FIG. 20, the mounting procedure at the time of mounting | wearing with this sealing tool 1A with the 1st mounting | wearing method is demonstrated. First, as shown in FIG. 16, the main body portion 41 is slid from the direction in which the pulling portion 4 a of the pull top tab 4 is inserted into the pull top insertion portion 43, and the left and right engagement portions 52 are engaged with the caulking portion 9. Accordingly, the rear engaging portion 53 is also engaged with the caulking portion 9. Thereby, the main body portion 41 of the sealing tool 1A is attached to the upper lid portion 7 (see FIGS. 17 and 18).

At this time, the pulling portion 4a of the pull top tab 4 is inserted and held in the pull top insertion portion 43 of the sealing tool 1A. Further, along with the mounting of the main body 41, the insertion tip portion 42a of the sealing portion 42 is below the extension portion 4c (that is, the extension portion) protruding from the fixing portion 55 of the pull top tab 4 to the drawer portion 4a side. Between the portion 4c and the top plate 6; (See Figure 18)
Subsequently, the sealing tool 1 </ b> A is rotated about 180 degrees around the central axis of the beverage can 2 in the direction of the arrow B <b> 4 in FIG. 17, so that the sealing material 54 of the sealing portion 42 faces the pull-top opening 3. Along with this, the sealing material 54 comes into close contact with the peripheral edge of the pull-top opening 3 and seals (see FIGS. 19 and 20). At this time, the insertion tip portion 42 a of the sealing portion 42 is in close contact with the radially inner side portion of the upper lid portion 7 located below the extended portion 4 c of the pull top tab 4 at the peripheral edge portion of the pull top opening 3.

  When removing the sealing tool 1A from the beverage can 2, the sealing tool 1A is placed with its rear side at the top (so that the pulling portion 4a of the pull top tab 4 is pulled out from the pull top insertion portion 43). ), The engagement between the engagement portions 52 and 53 and the caulking portion 9 is released by sliding the upper lid portion 7 in the radial direction.

  Next, with reference to FIG. 21 thru | or FIG. 23, the mounting procedure at the time of this sealing tool 1A mounting | wearing with the drink can 2 with a 2nd mounting method is demonstrated. First, as shown in FIG. 21, the main body 41 is slid from the direction corresponding to the pull-top opening 3 of the beverage can 2 by the sealing portion 42, and the left and right engaging portions 52 are engaged with the caulking portion 9. Accordingly, the rear engaging portion 53 is also engaged with the caulking portion 9. As a result, the main body portion 41 of the sealing tool 1A is attached to the upper lid portion 7, and the sealing material 54 is in close contact with the peripheral edge portion of the pull-top opening 3 and sealed (see FIGS. 22 and 23).

  At this time, the insertion tip portion 42 a of the sealing portion 42 is inserted below the base push-down portion 4 b of the pull top tab 4 as the main body portion 41 is attached to the upper lid portion 7, and the peripheral edge portion of the pull top opening 3. In close contact with the radially inner portion of the upper lid 7 (see FIG. 23).

  Removal of the sealing tool 1A from the beverage can 2 can be performed in substantially the same manner as when the first mounting method is used.

  As described above, according to the sealing tool 1 </ b> A according to the present embodiment, the plurality of engaging portions 52 and 53 provided in the main body portion 41 are configured to engage with the caulking portion 9 of the beverage can 2. Therefore, the unintentional drop-off etc. from the can 2 for drinks of sealing tool 1A can be prevented reliably.

  Further, since the left and right engaging portions 22 are engaged with the caulking portions 9 so as to be slid from substantially the side of the upper lid portion 7 of the beverage can 2, the sealing tool 1A is mounted. The tool 1A can be easily attached to the beverage can 2 and the sealing tool 1A can be easily attached to and detached from the beverage can 2 for repeated use.

  Moreover, since the above-mentioned 1st and 2nd mounting method can be selected as a method at the time of mounting | wearing with the sealing tool 1A to the drink can 2, the situation of the peripheral part of the pull top opening 3 of the drink can 2, and a user's The pull top opening 3 can be reliably sealed while flexibly responding to the taste and the like.

  Further, when the first mounting method is selected as the mounting method of the sealing tool 1A, the main body portion 41 is attached to the upper lid portion 7 so that the pulling portion 4a of the pull top tab 4 is inserted into the pull top insertion portion 43. When the sealing tool 1 </ b> A is rotated in the mounted state, the pull top tab 4 is also rotated around the fixing portion 5 with the can body, whereby the base push-down portion 4 b of the pull top tab 4 is outside the pull top opening 3. (The opposite side across the fixed portion 5). As a result, even in the case of the steion tab type beverage can 2, the sealing material 54 can be easily brought into close contact with the peripheral portion of the pull top opening 3 without interfering with the base pressing portion 4 b of the pull top tab 4. The pull top opening 3 can be reliably sealed.

  Further, the insertion tip 42a of the sealing portion 42 is attached to the upper lid portion 7 by sliding the main body 41 from the direction in which the pulling portion 4a of the pull top tab 4 is inserted into the pull top insertion portion 43. The sealing tool 1A is rotated together with the pull top tab 4 so that the sealing portion 42 is opposed to the pull top opening 3 so as to be inserted below the peripheral portion (extending portion 4c) of the fixing portion 5 in the pull top tab 4. Along with this, it closely adheres to the radially inner side portion of the upper lid portion 7 in the peripheral portion of the pull top opening 3. For this reason, it can seal more reliably also about the part located in the peripheral part (extended part 4c) of the fixing | fixed part 5 in the pull top tab 4 in the peripheral part of the pull top opening 3 below.

  Further, when the second mounting method is selected as the mounting method for the sealing tool 1A, the sealing tool 1A is simply slid from the side and mounted on the beverage can 2, and the mounting operation is performed. Thus, the pull top opening 3 is sealed with the sealing material 54. Therefore, there is an advantage that the rotating operation of the sealing tool 1A is unnecessary, and the sealing tool 1A can be mounted by a simple mounting operation.

  When the second mounting method is selected, the insertion tip portion 42 a of the sealing portion 42 is connected to the base pressing portion 4 b of the pull top tab 4 as the main body portion 41 is mounted on the upper lid portion 7. Is inserted into the lower side of the pull-top opening 3, and is in close contact with the radially inner side portion of the upper lid portion 7 at the peripheral edge of the pull-top opening 3. Thereby, it is possible to reliably seal the portion of the peripheral edge of the pull-top opening 3 located below the base push-down portion 4b of the pull-top tab 4, and even in the case of the steion tab type beverage can 2, the pull-top opening 3 can be reliably sealed.

  As a modification of the sealing portion 42 according to the second embodiment described above, as shown in FIG. 24, the bottom wall portion 55a of the support portion 55 (in this case, the bottom wall portion 55a has a cantilever structure). The bag-like sealing material 54 may be attached to the bottom wall portion 55a so as to cover the bottom wall portion 55a, or the sealing material 54 may be covered so as to cover the periphery of the bottom wall portion 55a by in-mold molding or the like. It may be formed.

It is a top view of the pull top opening sealing tool of the drink can which concerns on 1st Embodiment of this invention. It is the perspective view which simplified a part of pull top opening sealing tool of FIG. It is sectional drawing along the A1-A1 line of FIG. It is sectional drawing which abbreviate | omits and shows a part along the A2-A2 line | wire of FIG. It is a figure which shows the state which open | released the opening-and-closing part in sectional drawing of FIG. It is a top view of the locking member of the pull top opening sealing tool of FIG. It is a figure which shows a mode when the lock part of a lock member engages with the engagement recessed part of the opening-and-closing part of the pull top opening sealing tool of FIG. It is a figure which shows a mode when the lock part of a lock member engages with the engagement recessed part of the opening-and-closing part of the pull top opening sealing tool of FIG. It is a figure which shows a mode when the pull top opening sealing tool of FIG. 1 is mounted | worn with a drink can. It is sectional drawing which shows the state with which the pull top opening sealing tool of FIG. 1 was mounted | worn with the drink can. It is a figure which shows the modification of the sealing part of the pull top opening sealing tool of FIG. It is a top view of the pull top opening sealing tool of the drink can which concerns on 2nd Embodiment of this invention. It is a front view of the pull top opening sealing tool of FIG. It is sectional drawing along the A3-A3 line of FIG. It is sectional drawing which abbreviate | omits and shows a part along the A4-A4 line | wire of FIG. It is a figure which shows a mode when the pull top opening sealing tool of FIG. 12 is mounted | worn with the drink can by the 1st mounting method. It is a figure which shows a mode when the pull top opening sealing tool of FIG. 12 is mounted | worn with the drink can by the 1st mounting method. It is sectional drawing in the state of FIG. It is a figure which shows the state which the pull top sealing tool rotated about 180 degree | times from the state of FIG. It is sectional drawing which shows the state with which the pull top opening sealing tool of FIG. 12 was mounted | worn with the drink can by the 1st mounting method. It is a figure which shows a mode when the pull top opening sealing tool of FIG. 12 is mounted | worn with the drink can by the 2nd mounting method. It is a figure which shows the state with which the pull top opening sealing tool of FIG. 12 was mounted | worn with the drink can by the 2nd mounting method. It is sectional drawing in the state of FIG. It is a figure which shows the modification of the sealing part of the pull top opening sealing tool of FIG.

Explanation of symbols

  1,1A Pull-top opening sealing device, 2 Beverage can, 3 Pull-top opening, 4 Pull-top tab, 4a Lifting part, 4b Base pressing part, 5 Tab fixing part, 6 Top plate, 7 Upper lid part, 8 Body part, 9 Caulking Part 11 body part 12 opening / closing part 12a engaging recess 13 lock member 14 sealing part 15 pull-top pressing part 21 base part 22, 23 engaging part 24 shaft support part 24a rotating shaft 24b vine Winding spring, 26 arm part, 26a support hole, 26b lock part, 26c upper surface (inclined surface), 27 operation part, 28 fixture, 29 bending part, 31 support member, 31a first attachment part, 31b bending part, 31c 2nd attachment part, 32 sealing material, 32a insertion front-end | tip part, 33 pressing member, 34 fixing tool, 34a pin member, 34b ring member, 35 auxiliary member, DESCRIPTION OF SYMBOLS 1 Main body part, 42 Sealing part, 42a Insertion front-end | tip part, 43 Pull top insertion part, 51 Base part, 52,53 Engagement part, 54 Sealing material, 55 Support part, 55a Bottom wall part, 55b Escape part (notch part) ), 55c outer wall surface.

Claims (9)

A pull-top opening sealing device for a beverage can that seals a pull-top opening that is opened when the base is pressed down by a base pressing portion of the pull-top tab,
A plurality of engaging portions detachably engaged with a caulking portion that joins the upper lid portion and the body portion of the beverage can, and the engaging portion is slid from substantially the side of the upper lid portion; By engaging with the caulking portion, a main body portion attached to the upper lid portion;
An opening / closing part coupled to the body part so as to be openable and closable in a direction approaching and separating from the upper lid part;
A lock portion that locks the open / close portion in a closed position by engaging the open / close portion when the open / close portion is closed;
An operation unit for releasing an engagement state between the lock unit and the opening / closing unit based on an applied operation force;
The pull top is provided on a surface of the opening / closing portion facing the upper lid portion, and is in close contact with a peripheral portion of the pull top opening when the opening / closing portion is closed in a state where the main body portion is mounted on the upper lid portion. A sealing portion for sealing the opening;
A pull-top opening sealing device for beverage cans, comprising: In the beverage can pull top opening sealer according to claim 1,
The sealing part is
When the main body portion is attached to the upper lid portion, an insertion tip portion that protrudes radially inward of the upper lid portion is provided,
When the opening / closing part is closed in a state where the main body part is mounted on the upper lid part so that the opening / closing part is positioned substantially above the pull-top opening, A pull-top opening sealing tool for a beverage can, which is inserted below the base pressing portion and is in close contact with the radially inner side portion of the upper lid portion at the peripheral edge portion. In the beverage top can pull-top opening sealing device according to claim 1 or 2,
The sealing part is
A first attachment portion coupled to the surface of the opening / closing portion; a second attachment portion coupled to the first attachment portion via a bent portion; and the first attachment portion; A support member in which the bent portion is elastically deformed with respect to an external force that increases or decreases an interval between the second attachment portion, and
A sealing material having substantially rubber-like elasticity, disposed on the second mounting portion of the support member, and in close contact with the peripheral portion of the pull-top opening;
A pull-top opening sealing device for beverage cans, comprising: In the beverage can pull-top opening sealing device according to claim 2,
A pull-up portion of the pull-top tab is raised obliquely when the main-body portion is mounted on the upper lid portion so as to be provided on the lower surface side of the main-body portion so that the opening / closing portion is positioned substantially above the pull-top opening. A pull-top opening sealing device for a beverage can, further comprising a pull-top push-down portion that pushes the pull-up portion downward. The pull-top opening sealing tool of the beverage can according to claim 2 or claim 4,
The main body is
A base portion extending so as to be substantially parallel to the top plate of the beverage can when mounted on the beverage can;
A coupling unit coupled to the opening / closing unit;
In addition,
The beverage is characterized in that the coupling portion protrudes upward from the upper surface of the base portion so that a rotation shaft when the opening / closing portion is opened and closed is positioned above the upper surface of the base portion. Pull-top opening seal for cans. A pull-top opening sealing device for a beverage can that seals a pull-top opening that is opened when the base is pressed down by a base pressing portion of the pull-top tab,
A plurality of engaging portions detachably engaged with a caulking portion that joins the upper lid portion and the body portion of the beverage can, and the engaging portion is slid from substantially the side of the upper lid portion; By engaging with the caulking portion, a main body portion attached to the upper lid portion;
A sealing portion that is provided on a lower surface side of the main body portion and seals the pull top opening in close contact with a peripheral edge of the pull top opening when the main body portion is attached to the upper lid portion;
A pull-top opening sealing device for beverage cans, comprising: In the beverage can pull top opening sealer according to claim 6,
A pull-top insertion portion that is provided on the lower surface side of the main body and receives and holds the pull-up portion of the pull-top tab;
The sealing portion is configured such that the sealing portion faces the pull-top opening after the body portion is slid from the direction in which the pull-up portion of the pull-top tab is inserted into the pull-top insertion portion and attached to the upper lid portion. The pull-top opening sealing device for beverage cans, wherein the pull-top opening sealing device is in close contact with the peripheral edge of the pull-top opening as the pull-top opening sealing device is rotated together with the pull-top tab. In the beverage can pull-top opening sealer according to claim 7,
The sealing part is
When the main body portion is attached to the upper lid portion, an insertion tip portion that protrudes radially inward of the upper lid portion is provided,
The insertion tip is
As the main body portion is slid from the direction in which the pull-up portion of the pull-top tab is inserted into the pull-top insertion portion and attached to the upper lid portion, around the fixing portion of the pull-top tab with the can main body. As the pull-top opening seal is rotated with the pull-top tab so that the sealing portion is opposed to the pull-top opening, it is inserted below the portion that is positioned, at the peripheral edge of the pull-top opening. A pull-top opening sealing tool for beverage cans, which is in close contact with the radially inner portion of the upper lid. In the beverage can pull top opening sealer according to claim 6,
The sealing part is
When the main body portion is attached to the upper lid portion, an insertion tip portion that protrudes radially inward of the upper lid portion is provided,
The insertion tip portion is located below the base push-down portion of the pull-top tab as the main body portion is slid from the direction corresponding to the pull-top opening and attached to the upper lid portion. A pull-top opening sealing device for a beverage can, which is inserted and is in close contact with the radially inner side portion of the upper lid at the peripheral edge.

Images