JP2004331221A - Assembly of cap and spout - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly of a cap and a spout which enables an easy view of unsealing, and a packaging container including the assembly. <P>SOLUTION: The assembly of a cap and a spout includes a cylindrical spout, and a cylindrical cap to be mounted on the spout. An external thread is provided on the external surface of the spout, and a circumferential projection is provided at the base end of the external thread. The cap is equipped with a cylindrical cap body having an internal thread to engage with the external thread of the spout and a cylindrical ring on an opening side of the cap body via a circular slit. The cap body and the cylindrical ring are coupled via a plurality of joints integrally formed with the cap body and the cylindrical ring across the circular slit on the rear of the cap body and the ring. The cylindrical ring is equipped with a plurality of vanes folded inside the ring, and the vane is limited in the axial movement by the circumferential projection. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a combination of a cap and a spout having a spout provided in a container and a cap attached to the spout, and particularly relates to a liquid, a viscous fluid, a granule, a solid, and the like. TECHNICAL FIELD The present invention relates to a combination of a cap and a spout suitable for a packaging container for packaging beverages, foods, and the like, and a packaging container using the combination.

  2. Description of the Related Art Conventionally, as a cap attached to a spout of a container, a cap including a cap body that seals the spout and a cylindrical ring connected to an opening side of the cap body is known. The cylindrical ring is connected to the cap body when the cap is attached to the spout, but is separated from the cap body when the cap is rotated in the opening direction and removed from the spout. Such separation of the cylindrical ring makes it possible to recognize that the cap has been once removed from the outside.

  As described above, the conventional combination of the cap and the spout is configured such that the cylindrical ring is separated from the cap body when the cap is removed. However, even when the cap is rotated in the opening direction, the cylindrical ring remains in the cap body. May not be separated from

  Further, the cylindrical ring separated from the cap body may fall off from the spout, and it may not be possible to recognize whether or not the cap has been once removed.

  Conventionally, a combination of a cap and a spout as shown in FIGS. 1 to 3 has been used. FIG. 1 is a sectional view of a conventional combination of a cap and a spout, and FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is an external view of the cap.

  The conventional combination of a cap and a spout shown in FIGS. 1 to 3 includes a cylindrical spout 20 and a cylindrical cap 10 attached to the spout 20, and a male screw 21 a is provided on an outer surface of the spout 20. Further, a circumferential protrusion 22 is provided on the base end side of the male screw 21a, and a plurality of ratchets 23 are provided on the base end side of the circumferential protrusion 20 at predetermined intervals in the circumferential direction. A cylindrical cap body 11 having a female screw 11a engaged with a male screw 21a of the outlet 20 and a cylindrical ring 12 connected to the opening side of the cap body 11 through a thin portion 14 are provided. A plurality of blades 13 that are folded inside the ring 12 are provided, and the blades 13 contact the circumferential projections 22 to restrict axial movement, and further contact the ratchet 23 to restrict circumferential movement. It is an. 1 and 2, reference numeral 11b denotes a closed side of the cap, 11c denotes an opening side of the cap, 11d denotes an inner ring, 21 denotes a spout body, and 16 denotes a crease between the blade and the cylindrical ring.

In the combination of the cap and the spout, as shown in FIG. 2, an engagement projection 18 is provided on the cap body 11, and 19 is provided, and the circumferential direction in the closing direction of the cap 10 is regulated by the engaging projection 18 and the locking projection 19. (See Patent Document 1).
JP-A-2002-154563

  However, in the conventional combination of the cap and the spout, since the engagement projection 18 and the engagement projection 19 are provided between the cap body 31 and the cylindrical ring 12, the engagement projection 18 and the engagement projection 19 are provided. , The cap 10 and the spout 20 must be formed long.

  Further, when the thin portion 14 is broken, the cap 10 must be rotated while restricting the rotation of the cylindrical ring 12. Therefore, a ratchet 23 for restricting the circumferential movement of the blade 13 is required.

  Further, in the conventional combination of the cap and the spout, since a gap is formed between the cap body 31 and the cylindrical ring 12 from the beginning, even if the cap is closed again after opening, the external appearance is open. It's hard to tell what was done. Therefore, it is necessary to provide a clearance for dropping the cylindrical ring 12 downward in order to make it clear that the container has been opened, and there is a disadvantage that the height of the dispensing outlet is increased.

  An object of the present invention is to be able to reliably separate a cylindrical ring from a cap body without requiring a ratchet, an engagement projection and a locking projection, to prevent the cylindrical ring from dropping from a spout, and to open the cylinder ring. The present invention provides a combination of a cap and a spout capable of easily recognizing the combination, and a packaging container provided with the combination.

  Claim 1 solves the above-mentioned problem, and comprises a cylindrical spout and a cylindrical cap attached to the spout, and a male screw is provided on an outer surface of the spout, and further, on a proximal end side of the male screw. A circumferential projection is provided, the cap has a cylindrical cap body having a female screw engaged with a male screw of a spout, and a cylindrical ring is provided on the opening side of the cap body through an annular slit. Are connected by a plurality of joints formed integrally with the cap body and the cylindrical ring so as to straddle the annular slit on the back side of the cap body and the cylindrical ring, and the cylindrical ring is provided with a plurality of blades that are folded inside the cylindrical ring. The gist of the invention is a combination of a cap and a spout, wherein the blade is restricted in axial movement by a circumferential projection.

  In the combination of the cap and the spout according to the present invention, the cap is mounted on the spout while the blade is bent inside the cylindrical ring. As a result, the end of the blade is restricted from moving in the axial direction by the circumferential projection, so if the cap body is rotated under such a state, the joint is easily broken without using means such as a ratchet. Thus, the cylindrical ring can be separated from the cap body. Further, the cap ring and the circumferential projection of the spout prevent the cylindrical ring from dropping out of the spout, and a gap is formed along the slit after the joint is broken and opened. It can be easily recognized.

  In the assembly of the cap and the spout according to the present invention, preferably, the cylindrical ring is formed so as to be thick so as to protrude in the radial direction from the opening side of the cap body, and a rounded step portion is provided above the cylindrical ring. It is good to form. In the assembly of the cap and the spout having such a configuration, when the cap body is separated from the cylindrical ring, a rounded edge and a mouthful mouth are formed, and the beverage that is a package content is comfortable. It is possible to eat.

  In the present invention, the diameter of the cylindrical spout is formed so as to be larger than the circumferential protrusion of the cylindrical spout, or a plurality of ribs are provided on the base end side of the cylindrical spout so as to restrict the lateral movement of the blade. Is provided. The ribs are desirably formed in a substantially saw blade shape so that no resistance is applied to the blades when the cap is closed.

  In the present invention, it is desirable that the tether is provided at a position corresponding to the center of the blade, or that the tether is provided at a position corresponding to a position between the blades.

  The annular slit is formed on the entire circumference of the cylindrical ring by, for example, a disk cutter. At this time, when the link is at the center of the blade, the annular slit can be easily formed. In other words, when the blades are bent inside the cylindrical ring, the cylindrical ring becomes polygonal, but the joint comes inward in the radial direction of the cylindrical ring, so if you insert a cutter up to the front of the joint, the cylindrical ring other than the joint will be slit. You. Conversely, if it is between the blades, the cylindrical ring part with a connection protrudes slightly outward in the radial direction, and the cylindrical ring deforms into a polygonal cylindrical shape, so an annular slit is formed to leave the connection part Therefore, it is necessary to pay sufficient attention to the adjustment of the cut depth.

  However, if the above points can be overcome, the bridge between the blades has the advantage that the folded storage of the blades is not hindered. Therefore, the position of the annular slit can be lowered to just below the tip of the folded blade so that the tip of the blade bent inward of the cap is located at a height corresponding to the height of the middle of the connection, The height of the cylindrical ring can be reduced, and thus the height of the combination of the cap and the spout can be reduced.

  When a joint is provided between the blades, it is possible to increase the degree of freedom in selecting the cutting position of the annular slit and improve the cutting accuracy of the annular slit by forming the joint long in the vertical direction because the blade does not hit the joint. it can.

  In the assembly of the cap and the spout according to the present invention, the first spout is provided at a position corresponding to the center of the blade, and the second splice is provided at a position corresponding to between the blades. It is possible to prevent rattling of the cap attached to the vehicle and to prevent the cap from accidentally coming off.

  Further, the inner diameter of the blade needs to be larger than the inner diameter of the male screw so that the cap can be stably put on the spout while the blade of the cylindrical ring is bent inward. Further, when screwing the cap, it is desirable that the inner diameter of the bent blade is larger than the outer diameter of the male screw so that the bent blade is not hindered by the male screw.

  Further, it is desirable that the blade is formed so that the dimension from the root of the blade to the tip of the blade is the longest at the center of the blade, and the end of the blade contacts a circumferential projection of the spout with a large area.

  Further, it is desirable that the blades are formed so as to face right beside or obliquely upward with respect to the cylindrical ring. When the blade is directed right beside or obliquely upward, it is easy to bend the blade. Such a blade includes a cylindrical cap body having a female screw engaged with a male screw of a spout, and a cylindrical ring provided through an annular slit on the opening side of the cap body. Forming a cap having a plurality of blades that are connected to a plurality of ties integrally formed with the cap body and the cylindrical ring so as to straddle the annular slit on the back side of the cap body and the cylindrical ring, and the cylindrical ring is folded inside the cylindrical ring. The mold can be obtained by molding using a cap mold in which the molding die portion of the blade faces obliquely upward with respect to the molding die portion of the cylindrical ring.

  The thickness range of the cylindrical ring is 0.5-1.5 mm, preferably 0.8-1.2 mm. When the wall thickness is smaller than 0.5 mm, it is difficult to mold the cap because it is thin, or it is difficult to release the cap from the mold. On the other hand, when the thickness is more than 1.5 mm, it becomes difficult to cut the slit.

  Further, it is desirable to form a step by reducing the wall thickness of a part of the portion below the circumferential projection of the spout over the entire circumference. As a result, if the gap between the flanges of the circumferential projection is narrow due to the wall thickness below the circumferential projection of the spout, the sink will be generated below the circumferential projection when molding the resin (the cooling delay such as a thick part during resin molding is delayed). A phenomenon in which the surface is pulled and dented due to contraction of the portion) can be prevented from occurring, and the step formed with a reduced wall thickness can be used as a locking portion of the blade.

  In addition, it is desirable to provide a drainage groove in the circumferential projection of the spout to improve drainage. By providing drainage, it is possible to prevent mold from growing at the spout due to poor drainage.

  Further, it is desirable to attach a screw position mark on the outer peripheral portion of the cap so that the winding angle of the cap can be recognized. With this screw position mark, the tightening angle of the cap can be seen from the appearance, and it can be confirmed that the cap is properly tightened.

  The invention according to claim 20 solves the above-mentioned problem concerning the packaging container, and the cap and spout combination according to any one of claims 1 to 19 are attached to a pouch. The outline of the packaging container is a feature.

  In the packaging container of the present invention, the splicer can be easily broken without rotating the cap body and using means such as a ratchet, and the cylindrical ring can be separated from the cap body and opened. Further, the cylindrical ring can be reliably separated from the cap body without the need for the ratchet, the engaging projection and the locking projection, and the cylindrical ring is prevented from dropping from the spout, and it is easy to visually recognize that the cylinder ring has been opened. be able to.

  The combination of the cap and the spout according to the present invention includes a cylindrical spout and a cylindrical cap attached to the spout, an external thread is provided on an outer surface of the spout, and a circumferential end is provided on the base end side of the external thread. A projection is provided, the cap is provided with a cylindrical cap body having a female screw engaging with a male screw of the spout, and a cylindrical ring is provided through an annular slit on the opening side of the cap body. A plurality of blades integrally formed with the cap body and the cylindrical ring are connected so as to straddle the annular slit on the back side of the main body and the cylindrical ring, and the cylindrical ring is provided with a plurality of blades that are folded inside the cylindrical ring. Is characterized by the fact that the axial movement is regulated by the circumferential projection, so when the blade is bent inside the cylindrical ring, the end of the blade comes into contact with the circumferential projection. By restricting the axial movement, by rotating the cap body in such a state, the joint is easily broken without using a ratchet or other means, and the cylindrical ring is separated from the cap body. can do.

  Further, in the packaging container provided with the combination of the cap and the spout according to the present invention, a gap is formed along the slit after the joint is broken and opened, so that it is easy to visually recognize that the container has been opened. Also, the cylindrical ring separated from the cap body remains at the spout, and when the spout is turned over and the contents in the container are sucked, the tip of the blade comes into contact with the circumferential projection and the cylindrical ring falls off the spout. This has the advantage that it is not necessary to keep the cylindrical ring 32 from falling off during use.

  FIG. 4 is a sectional view of a cap constituting a combination of the cap and the spout according to the present invention. 5 and 6 show the positional relationship between the blades of the cap and the tie, FIG. 5 is an explanatory diagram showing a state where the tie is at the center of the blade, and FIG. 6 is an explanatory diagram showing a state where the tie is between the blades and the blade. It is. 7 and 8 show the positional relationship between the tip of the blade of the cap and the connection, FIG. 7 is a cross-sectional view showing a state where the connection is at the center of the blade, and FIG. It is sectional drawing which shows the state of. FIG. 9 is a sectional view of a spout, and FIG. 10 is a side view of another embodiment of the spout.

  The combination of the cap and the spout according to the present invention includes the spout 40 shown in FIG. 9 and the cylindrical cap 30 shown in FIG.

  In the present invention, the spout 40 may be a spout formed integrally with the container body, such as the mouth of a plastic bottle. Further, as shown in FIG. 10, a pouch mounting portion 47 to be attached to the pouch by heat sealing and a grip portion 46 used when the spout is conveyed to the pouch may be provided.

  The spout 40 includes a cylindrical spout main body 41, and an external thread 41 a is provided on an outer surface of the spout main body 41. The outer diameter of the male screw is formed smaller than the inner diameter of a group of blades 33 bent inside a cylindrical ring 32, which will be described later, and formed so as not to hinder the cap 30 from being rotated and attached to the spout 40. Have been. A circumferential projection 42 is provided on the base end 43 of the male screw 41 a of the spout body 41. In addition, the base end 43 of the spout 40 is formed thick to restrict the later-described blade 33 of the cylindrical ring 32 from lying down when positioned below the circumferential projection 42. In addition, a flange 44 is continuously provided on the base end side 43 of the spout 40.

  Also, the spout 40 is provided with a drainage groove 48 in the circumferential projection 42 as shown in FIG. 11 to improve drainage, and to prevent mold from growing in the spout 40 due to poor drainage. It is desirable to do. In addition, the provision of the drain groove 48 facilitates the outflow of water that has entered the inside of the cylindrical ring 32.

  The cap 30 is attached to the spout body 41 and includes a cylindrical cap body 31 having a closed side 31b and an opening side 31c. On the inside of the cap body 31, a female screw 31a that engages with the male screw 41a of the spout 40 is provided. A cylindrical ring 32 is provided on the opening side 31 c of the cap body 31 via an annular slit 35. The opening side 31c of the cap body 31 and the cylindrical ring 32 are connected to a plurality of thin walls integrally formed with the cap body 31 and the cylindrical ring 32 so as to straddle the annular slit 35 on the back side of the cap body 31 and the cylindrical ring 32. 34. The link 34 is disposed at a position corresponding to the center of the blade 33 as shown in FIG. In such an arrangement, the position of the tip of the blade 33 is below the connection 34 as shown in FIG.

In addition, a contact ring 31e and an inner ring 31d are provided on the inner surface of the cap body 31 on the sealing side 31b so as to engage with the tip of the spout body 41 of the spout 40 to enhance the sealing performance.

  The annular slit 35 is formed by slitting the cap 40 so that the cap 40 is cut to an intermediate depth after the molding.

  In addition, a plurality of, for example, eight blades 33 that are folded inward as shown in FIG. The blade 33 is bent inside the cylindrical ring 32. Further, since the axial end movement of the end of the blade 33 is regulated by the circumferential projection 42 of the spout 40, by rotating the cap body 31 under such a state, a means such as a ratchet can be used. Without use, the tether 34 breaks easily and the cylindrical ring 32 can be separated from the cap body 31.

  In addition, it is desirable that the blade 33 is shaped so as to face right beside or upward with respect to the cylindrical ring 32 as shown in FIG. When the blade 33 is directed right beside or obliquely upward, the blade 33 can be easily bent. Such a blade includes a cylindrical cap body having a female screw engaged with a male screw of a spout, and a cylindrical ring provided through an annular slit on the opening side of the cap body. Forming a cap having a plurality of blades that are connected to a plurality of ties integrally formed with the cap body and the cylindrical ring so as to straddle the annular slit on the back side of the cap body and the cylindrical ring, and the cylindrical ring is folded inside the cylindrical ring. The mold can be obtained by molding using a cap mold in which the molding die portion of the blade faces obliquely upward with respect to the molding die portion of the cylindrical ring.

  In addition, as shown in FIG. 5, instead of providing the connection 34 at a position corresponding to the center of the blade 33, the connection 34 is provided at a position corresponding to between the blades 33 as shown in FIG. Is also good. In this arrangement, as shown in FIG. 8, the joint 34 between the blades 33 does not hinder the folding and storage of the blades 33, so the tip of the blade 33 is equivalent to the height in the middle of the joint 34. It can be located at a height that is high. Therefore, the position of the annular slit 35 can be lowered to just below the position of the tip of the bent blade 33, and the height of the cylindrical ring 32 can be reduced, and thus the height of the combined cap and spout can be reduced.

  Further, when the link 34 is located between the blades 33 as shown in FIG. 8, the link 34 does not hinder the folding and storage of the blade 33. Therefore, as shown in FIG. Thus, the degree of freedom in selecting the cutting position of the annular slit 35 can be increased, and the cutting accuracy can be increased.

  Further, as shown in FIG. 13, a first joint 34a can be provided at a position corresponding to the center of the blade 33, and a second joint 34b can be provided at a position corresponding to between the blades 33. . In this case, the length of the second joint 34b in the vertical direction is increased as shown in FIG. 12, so that the degree of freedom in selecting the cut position of the annular slit 35 is increased, and the cutting accuracy can be improved. On the other hand, the first joint 34a is provided mainly for the purpose of preventing rattling of the cylindrical ring 32, and the position of the joint is regulated by the circumferential projection 42 of the spout 40 so that the cylindrical ring 32 is at a predetermined position. Be regulated. The connection of the cap body and the cylindrical ring by the first joint 34a is auxiliary. By providing the first joint 34a and the second joint 34b, the cap 30 attached to the spout 40 can be prevented from rattling, and the cap 30 can be accidentally displaced from the spout 40. Can be eliminated.

  In the embodiment of the present invention shown in FIGS. 5 and 6, the blade 33 is formed such that the tip of the blade is concave at the center. Alternatively, the blade may be formed so that the tip of the blade is convex as shown in FIG. 14, that is, the dimension from the root of the blade to the tip of the blade is the largest at the center of the blade. When the tip of the blade is convex as described above, the center of the tip of the blade 33 strongly contacts the circumferential protrusion 42, and the blade 33 is firmly locked to the circumferential protrusion 42, thereby preventing the cylindrical ring 32 from falling off. .

  FIGS. 15 to 17 show a combination of the cap and the spout according to the present invention using the cap shown in FIGS. 4 and 5 and the spout shown in FIG. 15 is a cross-sectional view of the combination of the cap and the spout, FIG. 16 is a cross-sectional view taken along the line AA of FIG. 15, and FIG. 17 is a side view of the combination of the cap and the spout. The blade 33 abuts on a circumferential projection 42 of the spout 40, connects the cylindrical ring 32 along the slit 35 and breaks the cylindrical ring 32 so that the cylindrical ring 32 cannot be opened unless the cap body 31 is separated.

  Further, in the embodiment of the present invention shown in FIGS. 4 to 17, when the blades 33 are positioned below the The diameter 43 on the side is formed thick. Instead of this, a plurality of ribs 45 may be provided on the base end side of the cylindrical spout as shown in FIG. In that case, as shown in FIG. 22, the rib 45 is desirably formed in a substantially saw-tooth shape so that resistance is not applied to the blade 33 when the cap 30 is closed.

  In addition, since the lower side 43 of the circumferential projection 42 of the spout 40 is thick, if the space between the flanges 44 of the circumferential projection 42 is narrow, sink marks occur on the lower side 43 of the circumferential projection 42. In order to solve this, it is desirable to form a step portion 49 as shown in FIGS. 23 and 24, and use this step portion 49 as a locking portion of the blade 33. In this case, before the circumferential ring 32 is separated from the cap 30, the blade 33 is located at a thick portion below the circumferential protrusion 42 as shown in FIG. After the circumferential ring 32 is separated from the cap 30, the blade 33 falls down and fits into the step 49. Since the gap is clearly formed between the circumferential ring 32 and the cap 30 in appearance, the presence or absence of opening is easy to understand.

  The thickness range of the cylindrical ring 32 is 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm. When the wall thickness is smaller than 0.5 mm, it is difficult to mold the cap because it is thin, or it is difficult to release the cap from the mold. On the other hand, when the thickness is more than 1.5 mm, it becomes difficult to cut the slit.

  The cap 30 is made of a molded article of a thermoplastic resin such as polyethylene or polypropylene, and the spout 40 is made of a molded article of a thermoplastic resin such as polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, or polystyrene.

  Next, the operation of the embodiment of the present invention having the above-described configuration will be described.

  First, using a cap 30 in which the connecting portion 31 is located at a position corresponding to the center of the blade 33 as shown in FIG. 5, the blade 33 of the cylindrical ring 32 is bent inward, and a cap is attached to the spout 40 shown in FIG. Put the body 31 on. At this time, since the inner diameter of the blade 33 is larger than the root diameter of the male screw 41a, the cap body 31 can be stably covered on the spout 40. Further, the female screw 31 a of the cap body 31 is engaged with the male screw 41 a of the spout body 41, and the cap 30 is mounted while being rotated with respect to the spout 40. At this time, the inner diameter of the blade 33 group bent inside the cylindrical ring 32 is formed larger than the outer diameter of the male screw of the spout body, so that the rotation of the cap 30 is not hindered. Finally, the blade 33 bent inside the cylindrical ring 32 is moved over the circumferential projection 42 and is shown in a sectional view in FIG. 15, FIG. 16 in a sectional view taken along the line AA in FIG. 15, and FIG. To form a combination of a cap and a spout as shown in the side view. In the same manner, when using the cap 30 in which the joint 34 is located between the blades 33 as shown in FIG. 6, the blade 33 of the cylindrical ring 32 is bent inward as shown in FIG. The cap body 31 is put on the spout 40 shown in FIG. 9, and the female screw 31a of the cap body 31 is engaged with the male screw 41a of the spout body 41 to rotate the cap 30 with respect to the spout 40. The cap and the spout can be formed by allowing the blade 33, which is finally bent inside the cylindrical ring 32, to ride over the circumferential projection 42 while being mounted.

  Next, when removing the cap 30 from the spout 40, the cap 30 is removed from the spout 40 by rotating the cap body 31 of the cap 30 in the opening direction opposite to the direction in which the cap 30 is mounted. At this time, since the blade 33 is bent inside the cylindrical ring 32, the end of the blade 33 abuts on the circumferential projection 42 and the movement in the axial direction is regulated. When the cap body 31 is rotated, the joint 34 is easily broken without using means such as a ratchet, and can be separated into the cylindrical ring 32 shown in FIG. 19 and the cap body 31 shown in FIG. FIG. 20 is an external view of a state after the cap main body 31 and the cylindrical ring 32 are separated in such a manner.

  As described above, when the cap 30 of the spout 40 is removed, the joint 34 is broken and the cylindrical ring 32 is separated from the cap body 31, so that the removal state of the cap 30 can be easily recognized.

  When the cap body 31 of the cap 30 is completely removed from the spout 40, the cylindrical ring 32 separated from the cap body 31 remains in the spout 40 as shown in FIG. Thereafter, when the spout 40 is turned over and the spout 40 is turned over to suck the contents in the container, the tip of the blade 33 comes into contact with the circumferential projection 42 and the cylindrical ring 32 falls off the spout 40. There is no. Therefore, it is not necessary to hold down the cylindrical ring 32 so that the cylindrical ring 32 does not fall off during use.

  In addition, as shown in FIG. 19, the corner E of the cylindrical ring 32 is exposed at the spout 40 after opening, and when the spout is attached to the mouth, the corner E hits the mouth and the mouth feel may not be good. . The embodiment of the present invention shown in FIG. 25 solves this, and forms a stepped portion 37 that protrudes radially from the opening side of the cap main body outside the cylindrical ring 32 and is rounded upward, When the cap body is separated from the cylindrical ring, a mouth portion with a rounded edge and a pleasant mouth is formed, so that it is possible to comfortably eat a beverage as a package content.

  In the embodiment of the present invention shown in FIG. 26, two projecting screw position marks 37 are provided on the outer peripheral portion of the cap 30 at intervals of 180 degrees so that the tightening angle of the cap 30 can be recognized. With this screw position mark, the tightening angle of the cap can be seen from the appearance, and it can be confirmed that the cap is properly tightened.

  FIG. 27 shows a packaging container 50 provided with a combination of a cap and a spout according to the present invention. The spout 40 in this packaging container has a pouch mounting portion 47 for attaching the spout 40 by heat sealing and a grip portion 46 for transporting the spout 40 toward the pouch 51 in the bag making process. Is fixed by heat sealing to the inner surface of a packaging film constituting the pouch 51, for example, a polyethylene / aluminum / nylon laminated film. In this packaging container, the detached state of the cap 30 can be easily recognized as described above. Further, the cylindrical ring 32 separated from the cap body 31 remains in the spout 40, and when the spout 40 is turned over and the contents in the pouch 48 are sucked, the tip of the blade 33 comes into contact with the circumferential projection 42 and the cylindrical The ring 32 does not fall out of the spout 40. Therefore, it is not necessary to hold down the cylindrical ring 32 so that the cylindrical ring 32 does not fall off during use.

  The combination of the cap and the spout according to the present invention can be suitably used particularly for a packaging container in which beverages, foods, and the like made of liquids, viscous fluids, granules, solids, and the like are packaged.

It is sectional drawing of the cap described in patent document 1 (Unexamined-Japanese-Patent No. 2002-154563), a spout, and an assembly. FIG. 2 is a sectional view taken along line AA of FIG. 1. FIG. 2 is an external view of a combination of a cap and a spout shown in FIG. 1. It is sectional drawing of the cap which comprises the combination of the cap of this invention, and a spout. It is a figure showing the example where the connection of the cap of the combination concerning the present invention is in the center of the blade. It is a figure showing the example where the link of the union concerning the present invention is between the blades. It is sectional drawing which shows the positional relationship of the front-end | tip of the blade | wing of a cap, and a connection | connect when a connection | link is in the center of a blade | wing. It is sectional drawing which shows the positional relationship of the front-end | tip of the blade | wing of a cap, and a connection | connect, when a connection | link is between blades. It is sectional drawing of the spout which comprises the union of the cap and spout of this invention. It is a side view of another form of the spout which comprises the combination of the cap and the spout of the present invention. It is a side view of another form of the spout which comprises the combination of the cap and the spout of the present invention. It is sectional drawing of the form of the cap which lengthened the vertical length of the connection which comprises the combination of the cap and spout of this invention. It is a figure which shows another form of the cap which comprises the combination of the cap of this invention, and a spout, with the 1st connection being arrange | positioned at the center of a blade and the 2nd connection being arrange | positioned between blades. . It is a figure which shows the embodiment of the cap which has the front-end | tip part of the blade | wing which comprises the union of the cap of this invention, and a spout. It is sectional drawing of the combined body of the cap and the spout of this invention. FIG. 16 is a cross-sectional view taken along line AA shown in FIG. 15. It is an external view of the combination of the cap and the spout of the present invention. It is sectional drawing of the cap from which the cylindrical ring after separation from the cap main body was removed. It is sectional drawing of the spout in which the cylindrical ring after separation from the cap main body remained. It is an external view of the assembly of the cap and the spout after the cap main body and the cylindrical ring are separated. It is sectional drawing of another embodiment of the combination of the cap and the spout of this invention. FIG. 22 is a cross-sectional view of the rib shown in FIG. 21. The state before the cap is separated from the cylindrical ring in the embodiment of the combination of the cap and the spout that constitutes the combined body of the cap and the spout according to the present invention and has a stepped portion below the circumferential projection. FIG. The state after the cap is separated from the cylindrical ring in the embodiment of the cap and the spout combination that has the stepped portion below the circumferential projection and constitutes the combination of the cap and the spout according to the present invention. FIG. It is a fragmentary sectional view of an embodiment of a combination of a cap and a spout provided with a step on the outside of a cylindrical ring. It is a fragmentary sectional view of an embodiment of a combination of a cap and a spout provided with a screw position mark outside the cap body. It is a side view of the packaging container of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 30 Cap 31 Cap main body 31a Female screw 31b Closed end 31c Open end 31d Inner ring 31e Contact ring 32 Cylindrical ring 33 Blade 34 Connecting 35 Slit 36 Stepped portion 37 Screw position mark 40 Spout 41 Spout main body 41a Male screw 42 Circular projection 43 Note Lower than the circumferential protrusion at the outlet 44 Flange 45 Rib 46 Grip portion 47 Pouch mounting portion 48 Drainage groove 49 Step portion 50 Packaging container 51 Pouch 10 Cap 11 Cap body 11a Female screw 11b Sealed end 11c Open end 11d Inner ring 12 Cylindrical ring DESCRIPTION OF SYMBOLS 13 Blade 14 Thin film part 16 Folding rule 18 Engagement projection 19 Engagement projection 20 Outlet 21 Outlet body 21a Male screw 22 Circular projection 23 Ratchet

Claims (20)

  A cylindrical spout and a cylindrical cap attached to the spout, a male screw is provided on the outer surface of the spout, and a circumferential protrusion is further provided on a proximal end side of the male screw. A cylindrical cap body having a female screw engaged with a male screw, a cylindrical ring is provided through an annular slit on the opening side of the cap body, and the cap body and the cylindrical ring have an annular slit on the back side of the cap body and the cylindrical ring. The cap body and the cylindrical ring are connected so as to straddle by a plurality of joints formed integrally with the cap body, and the cylindrical ring is provided with a plurality of blades that are folded inside the cylindrical ring, and the circumferential movement of the blades is restricted by a circumferential protrusion. A combination of a cap and a spout characterized by being made.   2. The cylindrical ring according to claim 1, wherein the cylindrical ring is formed to be thicker so as to protrude in the radial direction from the opening side of the cap body, and a rounded step is formed above the cylindrical ring. Union of cap and spout.   3. The combination of a cap and a spout according to claim 1 or 2, wherein the cylindrical spout is formed so as to be thicker so as to restrict the diameter of the cylindrical spout below the circumferential projection from being lateral to the blade. body.   The combination of a cap and a spout according to claim 1 or 2, wherein a plurality of ribs are provided on a base end side of the cylindrical spout so as to restrict the blade from lying sideways.   The combination of a cap and a spout according to claim 4, wherein the rib is formed in a substantially saw blade shape.   The combination of a cap and a spout according to any one of claims 2 to 5, wherein the link is provided at a position corresponding to the center of the blade.   The combination of a cap and a spout according to any one of claims 2 to 5, wherein the link is provided at a position corresponding to between the blades.   The combination of a cap and a spout according to claim 7, wherein the joint is formed to be long in the vertical direction.   9. The combination of a cap and a spout according to claim 7, wherein the tip of the blade bent inward of the cap is located at a height corresponding to a height in the middle of the connection.   The first connector is provided at a position corresponding to the center of the blade, and the second connector is provided at a position corresponding to the position between the blades. The method according to any one of claims 2 to 5, wherein Union of cap and spout.   The combination of a cap and a spout according to claim 10, wherein the second joint is formed to be long in the vertical direction.   12. The combination of a cap and a spout according to any one of claims 1 to 11, wherein an inner diameter of the bent blade is larger than an inner diameter of a male screw of the spout.   13. The combination of a cap and a spout according to claim 12, wherein the inner diameter of the bent blade is larger than the outer diameter of the male screw.   The combination of a cap and a spout according to any one of claims 1 to 13, wherein the dimension from the root to the tip of the blade is the longest at the center of the blade.   The combination of a cap and a spout according to any one of claims 1 to 14, wherein the blade is formed so as to face right beside or obliquely upward with respect to the cylindrical ring.   The combination of a cap and a spout according to any one of claims 1 to 15, wherein the thickness of the cylindrical ring is 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm. .   17. The locking step of the blade is formed by reducing the wall thickness of a part of a portion below the circumferential projection of the spout over the entire circumference. Union of cap and spout.   The combination of a cap and a spout according to any one of claims 1 to 17, wherein a drainage groove is provided on a circumferential projection of the spout.   19. The combination of a cap and a spout according to claim 1, wherein a screw position mark is attached to an outer peripheral portion of the cap so that a winding angle of the cap can be recognized. 20. A packaging container, wherein the combination of the cap and the spout according to any one of claims 1 to 19 is attached to a pouch.

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