JP6992383B2 - cap - Google Patents

Description

The present invention relates to a cap attached to the mouth of a container, and more particularly to a cap having a linear protrusion provided on the outer surface of the cap, that is, a cap whose so-called knurled shape is slanted so that the cap can be easily opened.

It is known that a protrusion, a so-called knurl, is provided on the outer surface of the cap as a cap for closing the mouth of the container, and such a cap is widely used for bottles, pouches, and the like. When the cap of a container for coffee or soft drink is opened or closed, a protrusion of a line extending in the vertical direction is formed on a so-called skirt wall corresponding to a side surface portion of a cylindrical shape. This protrusion is provided to prevent fingers from slipping when opening and closing the cap. A so-called knurl is provided with a plurality of protrusions.

In addition, in order to save resources and reduce costs, caps with a low skirt wall height or cap diameters may be used. In such a case, the area in contact between the finger and the cap becomes small, and it becomes difficult to open the one that requires a large force for the initial opening. In addition, even a cap with a small diameter is difficult to apply force and difficult to open. Therefore, there is an attempt to facilitate opening by forming a specially shaped knurl on the skirt wall of the cap.

In addition, when the user opens the cap with the pilfer proof band attached at the initial stage after purchasing a beverage product or the like, the connection portion with the cap of the pill fur proof band is cut off, so that the cap is not opened normally. Also requires a load, and the protrusions may bite into the fingertips.
Against this background, various knurled shapes of caps that can be easily opened have been studied.

In Patent Document 1, a cap having a screw portion screwed to a container mouth portion on the inner peripheral surface and opened and closed by rotating along the circumferential direction of the outer peripheral surface of the cap is provided on the outer peripheral surface of the cap. , Vertical ribs in a direction orthogonal to the rotation direction of the cap are formed at predetermined intervals, the height of the vertical ribs is in the range of 0.2 mm to 2.0 mm, and the distance between adjacent vertical ribs is 0.5 mm. A cap having a range of about 20 mm and characterized in that a small rib shorter than the vertical rib is formed in parallel with the vertical rib between the adjacent vertical ribs is disclosed.

Patent Document 2 has a top wall and a tubular skirt wall hanging from the peripheral edge of the top wall as a container lid, and the outer peripheral wall portion of the skirt wall protrudes to the outside of the outer peripheral wall portion. In a container lid having a skirt portion knurl forming region in which a plurality of skirt protrusions extending in the vertical direction of the skirt wall are formed over the entire circumferential direction of the skirt wall, the protrusion is the outer peripheral wall portion. A large protrusion having a large protrusion height from the outer surface and a small protrusion having a protrusion height lower than that of the large protrusion are provided, and the skirt wall has a large protrusion region in which a plurality of the large protrusions are formed and the above. It has a small protrusion region in which a plurality of small protrusions are formed, and these large protrusion regions and small protrusion regions are alternately arranged in the circumferential direction of the main portion, and these large protrusion regions and small protrusions are arranged. The portion region has a top peripheral peripheral knurl-forming region formed by extending from the upper edge of the skirt wall toward the inside of the top wall in an annular shape, and has a large protrusion region and a small protrusion of the top peripheral knurl-forming region. Disclosed is a container lid characterized in that the portion region is formed so as to protrude from the top wall.

Japanese Unexamined Patent Publication No. 2001-354247 Japanese Unexamined Patent Publication No. 2009-29483

The shape of the rib provided on the outer peripheral surface of the cap of Patent Document 1 is a streak, and the tall rib and the short rib are alternately arranged to be opened. When the cap is turned in the opening direction, the surface of the finger inserted between the vertical ribs comes into contact with the small ribs, and the frictional force increases. Therefore, even if the cap is wet with a surfactant, detergent, solvent, etc., the fingers do not slip and it is said that the cap can be turned reliably.

However, in the cap of Patent Document 1, there is no description that the knurled shape is slanted, and it cannot be said that the cap can be opened with a small force. In addition, in the case of such a shape, since the finger is always in contact with the protrusion of the rib, the finger hurts when opening and closing, and it is difficult to apply force.

Further, in the cap disclosed in Patent Document 2, a large protrusion region composed of a plurality of ribs and a small protrusion region similarly formed are alternately arranged on the outer peripheral wall surface portion of the cap. Is what you are doing. However, unlike the configuration in which the protrusions of the streaks are arranged diagonally with respect to the opening direction of the cap as in the present application, the ribs are not formed diagonally, and therefore, as compared with the present invention. Extra force is required, and fingers hurt when opening.

Therefore, an object of the present invention is to provide an easy-opening cap that can be opened with a small force.

In order to solve the above problems, the present invention has a top surface portion, an outer surface portion, an inner side surface portion, and a lower end portion, the inner side surface portion is a cylindrical cap, the outer surface portion is cylindrical, and the cap is hung from the top surface portion. In the cap, the outer surface portion has a plurality of linear protrusions, and the linear protrusions are continuously provided from the top surface portion or its vicinity to the lower end portion or its vicinity. Of the angle formed by the straight line passing through one end and the other end of the protrusion of the streak and the top surface portion or the same plane thereof, the virtual angle formed on the lower end portion side and in the opening direction of the cap is It has an acute angle and is characterized in that a large number of circular protrusions are provided on the surface of the outer surface portion sandwiched between the protrusions of the streaks .

Further, the virtual angle is characterized by being 45 degrees to 85 degrees.

Further, the protrusions of the streaks are provided at equal intervals so as not to intersect at least a part of the outer surface portion, and the interval is 0.5 mm to 15 mm.

Further, the protrusion of the streak is characterized in that it protrudes from the outer surface portion at a height of 0.1 mm to 1.0 mm in the radial direction of the cap.

Further , the protrusion of the streak is characterized in that the portion above the start point bends in the closing direction and the portion below the end point bends in the opening direction .

Further, it is characterized in that a pilfer proof band is provided at the lower end portion.

According to the present invention, in a cap having a top surface portion, an outer surface portion, an inner side surface portion, and a lower end portion, the inner side surface portion is a cylindrical cap, the outer surface portion is cylindrical, and the cap hangs down from the top surface portion. The side surface portion has a plurality of linear protrusions, and the linear protrusions are continuously provided from the top surface portion or its vicinity to the lower end portion or its vicinity, and are provided at one end of the linear protrusion. Of the angles formed by the straight line passing through the other end and the top surface or the same plane thereof, the virtual angle formed on the lower end side and in the opening direction of the cap is an acute angle, and the linear angle of the outer surface portion. It is characterized by providing a large number of circular protrusions on the surface sandwiched between the protrusions, so that when the cap is turned with a finger in the opening direction, the finger streaks are easily caught by the protrusions. The cap can be turned with a small amount of force and can be easily opened.

Further, since the present invention is characterized in that the virtual angle is 45 to 85 degrees, when the cap is turned with the finger in the opening direction, the finger is more likely to be caught on the protrusion of the streak. The cap can be turned with less force, resulting in less pain in the fingers and easier opening.

Further, the protrusions of the streaks are provided at equal intervals so as not to intersect at least a part of the outer surface portion, and the interval is 0.5 mm to 15 mm. There is no difficulty in getting the flesh of the finger between the protrusion of the strip and the protrusion of the adjacent line, and the finger does not hurt. On the contrary, all the fingers will not enter and the fingers will not slip on the outer surface. Therefore, it can be easily opened.

Further , the protrusion of the streak is characterized in that it protrudes from the outer surface portion at a height of 0.1 mm to 1.0 mm in the radial direction of the cap, so that the flesh of the finger is appropriately formed on the streak. It can be easily opened with a small force by being caught on the protrusion.

Further , the protrusion of the streak is characterized in that the upper part of the streak is bent in the closing direction and the lower part of the end point is bent in the opening direction . It does not hurt your fingers and can be easily opened.

Further , since the lower end is provided with a pilfer proof band, it is clearly indicated that the initial opening has been made, and as a result, unauthorized opening can be prevented and the pilfer proof can be prevented. A little more force than usual is required to open the banded cap, but the required force can be reduced. Therefore, a cap with a pilfer proof band that is easy to open is provided.

It is a front view and a plan view which showed an example of the cap which concerns on this embodiment. FIG. 3 is a sectional view taken along line VV of the cap of FIG. It is an enlarged perspective view when the container of the cap of FIG. 1 is attached. It is a perspective view at the time of opening of the cap of FIG. It is a perspective view of the nozzle corresponding to the cap which concerns on this embodiment. (X) is an enlarged view of the Y region of FIG. 1, and (Y) is an arrow view of the α region seen from the α'direction of FIG. It is an enlarged front view of a main part which showed an example of the container to which the cap which concerns on this embodiment is attached. Each is a front view showing another example of the cap according to the present embodiment. (B) is an XVI-XVI line sectional view of the cap of FIG. 7, (a) is an enlarged view of the VI region, and (c) is a side view of (a).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 2 to 4, the cap 1 with the pilfer proof band according to the present embodiment is positioned at a predetermined distance below the cap main body 10 having a climax cylindrical shape and the cap main body 10. The ring portion 20 is provided, and a plurality of connecting connecting portions 30 for connecting the cap main body 10 and the ring portion 20 are provided. The connecting joint portion 30 is provided as shown in an enlarged manner in FIG. The cap 1 is configured to clearly indicate that the ring portion 20 is deformed at the time of initial opening and the initial opening is performed by the deformation of the ring portion 20.

As shown in FIG. 1, the cap main body 10 has a cylindrical outer surface portion 11 extending in the vertical direction and a disk-shaped top surface portion 12 that closes the upper end of the outer surface portion 11, and has a ecstatic cylindrical shape. It is formed. As shown in FIG. 2, a screw 13 is formed on the inner peripheral surface of the outer surface portion 11. The screw 13 engages with a screw formed in the mouth of the container, which will be described later, and the cap 1 is firmly attached to the mouth of the container by the engagement of the screw. The screw 13 is a right-handed screw, and the clockwise rotation direction is the closing direction X'of the cap 1 and the counterclockwise direction is the opening direction X in a plan view. The screw 13 may have a shape in which the cap 1 can be attached to the mouth of the container without loosening.

More specifically, according to the dimensions of the screw at the mouth of the container, the valley diameter of the screw 13 (corresponding to the outer diameter of the inner peripheral surface of the outer surface portion 11), the thread diameter, and the pitch (screws adjacent to each other in the vertical direction). Distances between threads (threads) of 13 and 13) and the like are formed. The screw 13 may be any screw corresponding to the screw at the mouth of the container, and its shape may be a single-threaded screw or a multi-threaded screw such as a double-threaded screw or a triple-threaded screw. Further, in a plan view, the winding angle, which is the angle around the screw 13 from one end to the other end, may be any angle as long as the mouth of the container and the cap body 10 can be securely attached without loosening.

As shown in FIG. 3, a knurl 14 composed of a plurality of linear protrusions 4 extending in the vertical direction is formed on the outer peripheral surface of the outer side surface portion 11. Since the cap body 10 is provided with the knurl 14 on the protrusion 4 of the streak, the finger does not slip easily when the cap 1 is attached to and detached from the mouth of the container, and the attachment / detachment operation becomes easy. The protrusion 4 is formed in a straight line as shown in FIG. However, it does not have to be linear. Regarding the portion where the protrusion 4 is close to the top surface portion 12, even if the angle is different or the protrusion portion is formed in the vertical direction, the protrusion portion 4 is subsequently directed diagonally downward from the vicinity of the top surface portion 12. Should be formed.

Next, regarding the direction in which the protrusion 4 is formed, when the top surface portion 12 of the cap is on the top and the lower end portion 3 is on the bottom, the knurl 14 is viewed from the front as shown in FIG. 1 (a). It is provided at an angle from diagonally above left to diagonally downward right. The opening direction in the present embodiment is the X direction shown in FIG. 1 (b), that is, counterclockwise, and in FIG. 1 (a), the cap is opened by applying a force from the left direction to the right direction. To. When the opening direction is counterclockwise, the convex portion of the streak has the above inclination, and when the opening direction is opposite, the cap 1 is viewed from the front as shown in FIG. 1 (a). In the case, it has a protrusion 4 which is a protrusion of a streak from diagonally upper right to diagonally lower left.

The protrusion 4 of the streak will be described in more detail. As shown in FIG. 3, the protrusion 4 of the streak is provided on the outer surface portion 11 as a plurality of spiral or diagonally shaped protrusions. The protrusion 4 is provided diagonally in a direction corresponding to the opening direction, which is counterclockwise in the present embodiment. That is, when the protrusion 4 of the streak is formed from the point where the straight line intersects the straight line perpendicularly from the end of the top surface portion 12, and the opening direction is counterclockwise, the cap 1 The protrusion 4 of the streak is formed so that the lower end is displaced in the right direction in the front view and in the counterclockwise direction in the top view. As for the angle of the deviation, it is preferable that the angle formed by the straight line vertically downward from the end of the top surface portion or its vicinity and the protrusion 4 of the streak is 5 to 45 degrees in the front view. In other words, of the angle formed by the straight line γ passing through one end and the other end of the protrusion 4 of the streak, the portion excluding the recess such as the top recess 15 provided on the top 12, or the same plane thereof. It is desirable that the virtual angle formed on the lower end side of the cap and in the opening direction of the cap is an acute angle so that the protrusion 4 of the streak is inclined.
Further, the protrusion 4 of the streak is provided on at least a part of the outer surface portion. As shown in FIG. 1 (b), the outer surface portion is provided with two strip protrusions at equal intervals and two strip protrusions are not provided alternately. It may be an existing configuration. With such a configuration, the amount of resin can be reduced. Of course, the protrusion 4 of the streak may be provided over the entire circumference as shown in FIG. 8 (z).

Further, showing this in the α region of FIG. 6 (Y) is as follows. That is, the α region of FIG. 6 (Y) is an arrow view of the protrusion 4 from the arrow direction of α ′ shown in FIG. 1 (b), and is an enlargement of the α region of FIG. 1 (a). .. The angle Θ formed by the top surface portion 12 or its coplanar surface 12'and the line connecting one end and multiple ends of the protrusion 4 of the streak is an acute angle. Θ is more preferably 45 to 85 degrees. If the angle Θ is 55 to 75 degrees, it is more suitable for fingering. Next, the distance between the protrusions 4 will be described in detail. It has already been mentioned that the knurl 14 consists of a plurality of protrusions 4. It is preferable that the protrusions 4 are parallel to each other, and the distance between the protrusions 4 of the knurl 14 is the distance from one of the protrusions to the other when the protrusions are connected by a horizontal line, that is, FIG. It is preferable that V in the α region of the above is 0.5 mm or more and 15 mm or less because it is easy to grasp. More preferably, the interval is 1 mm or more and 5 mm or less. With this interval, the finger grip is even better, and the finger does not feel uncomfortable when opening the cap.

Next, regarding the height of the protruding portion, the height of the protruding portion is the Z in the Y region in the enlarged view of the Y region of FIG. 1 (b) shown in FIG. 6 (X). It is a portion shown by, and is a distance from the outer surface portion 11 to the portion where the protrusion 4 is most separated in the radial direction. It is desirable that the height Z of the protrusion is 0.1 mm or more and 1.0 mm or less. By forming in this way, the cap 1 can be made to have a better finger grip.

FIG. 8 is a diagram showing another example of the embodiment according to the present invention. As shown in FIG. 8 (z), the protrusions of the streaks may be provided over the entire circumference. Further, it may be a streak and may be a continuous protrusion. By making the protrusions continuous or by providing the protrusions all around, it is possible to obtain the same good finger grip regardless of the position at which the plug is opened.
Further, as shown in FIGS. 8 (x) and 8 (y), the starting point 100 to the starting point of the protrusion of the streak is located in the vicinity of the top surface portion 12 and the lower end portion 3 so as not to lose the goodness of the finger grip. It is preferable that there is an end point 110. Even if the protrusions are formed in the form of 4a, 4b, or 4c, the effect of the present invention does not change.

Further, in the enlarged view of the region A in FIG. 8 (y), an example of the embodiment according to the present invention is shown. Here, a large number of small protrusions 50 are formed on the outer surface portion 11 at places other than the protrusions 4 of the streaks. This has the effect of further improving the finger grip.
The small protrusion 50 may be circular. Further, the outer side of the cap body 10 in the radial direction may be flat. Compared to being spherical or sharp, the fingers do not hurt. Further, it is desirable that the size of the small protrusion has a diameter or a total length of 0.1 mm to 5.0 mm from the viewpoint of finger hooking. Further, in FIG. 8 (x), the angle Σ2 formed by the straight line γ'and the top surface 12 or the portion of the same plane excluding the top surface recess 15 corresponds to the virtual angle Θ in the α region of FIG. The same applies to the angle Σ in FIG. 8 (y).

The figure (x) of FIG. 8 will be described in detail. FIG. 8 (x) shows another embodiment of the present invention as described above. A starting point 100 of a protrusion of a streak is formed on the cap body 10. From the start point 100 to the end point 110, the protrusion 4a of the streak is formed in a substantially straight line. The start point 100 may be located near the top surface portion 12, and in this case, the protrusion 4a of the streak points from the start point 100 to the end point 110. The angle formed by the straight line connecting the start point 100 and the end point 110 and the plane formed by the top surface portion 12 is Σ2, and it is preferable that the angle formed in the opening direction of the present invention is 45 degrees to 85 degrees. All straight lines are shown to pass through the center of the start point 100 and the end point 110. However, if necessary for grasping the protrusion of the streak according to the present invention, the starting point 100 may be calculated from the end of the upper surface of the protrusion of the streak. The same applies to the end point 110. This point is the same for 4b and 4c in FIGS. 8 (y) and 8 (z).

With reference to FIG. 2, the top surface portion 12 includes an annular top surface recess 15 extending downward from the inner surface surface portion and an annular inner ring 16 protruding downward from the inner surface surface between the top surface recess 15 and the outer surface portion 11. Has. The inner side of the top surface recess 15 of the top surface portion 12 is curved in a convex shape toward the inside of the cap body 10 (downward in FIG. 2 ). A solidified portion incidentally formed at the inflow port (gate) of the molten resin when the cap 1 is manufactured by injection molding adheres to the central upper portion curved in a protruding shape on the outer surface of the top surface portion 12. It should be noted that FIGS. 1 to 4 show the form after the portion is cut off.

When the cap 1 is attached to the mouth portion of the container, the top surface portion 12, the inner ring 16 and the contact ring 17 are configured to seal the opening portion of the mouth portion as a spout. The inner ring 16 has an outer diameter larger than the inner diameter of the mouth portion, and is formed in a tapered shape in which the outer peripheral surface of the tip portion is inclined inward toward the bottom. When the cap 1 is attached to the mouth portion of the container, the inner ring 16 is inserted into the mouth portion and fits with the mouth portion. At this time, the inner ring 16 is in a state of being bent inward, and the outer peripheral surface is in close contact with the inner peripheral surface of the mouth portion to seal the mouth portion. On the other hand, when the cap 1 is attached to the mouth of the container, the contact ring 17 is in close contact with the opening end of the mouth of the container to seal the mouth.

The inner ring 16 and the contact ring 17 may have a shape that can seal the mouth of the container, and can be appropriately designed according to the shape of the mouth. Further, the structure for sealing the mouth of the container of the cap 1 is not limited to the structure of the inner ring 16 and the contact ring 17. For example, an annular protrusion that protrudes downward from the inner surface of the top surface portion 12 between the contact ring 17 and the outer surface portion 11 is further provided, and when the cap 1 is attached to the mouth portion of the container, the inside of the annular protrusion is provided. The peripheral surface may be configured to be in close contact with the outer peripheral surface of the mouth portion.

The ring portion 20 is located below the cap main body 10 with a predetermined interval, and is formed in a cylindrical shape coaxial with the outer surface portion 11 of the cap main body 10. The outer diameter of the ring portion 20 is substantially the same as the outer diameter of the outer peripheral surface of the lower end portion of the outer surface portion 11, and the inner diameter is larger than the outer diameter of the inner peripheral surface of the lower end portion of the outer surface portion 11. That is, the ring portion 20 is formed to be thinner in the radial direction than the lower end portion of the outer surface portion 11.

As shown in FIGS. 4 and 9, the ring portion 20 is configured such that a plurality of arc-shaped portions 21 curved in an arc shape are connected in a cylindrical shape via a thin-walled connecting portion 22 formed to have a thin wall thickness. Will be done. Here, the ring portion 20 has a configuration in which two plate-shaped arcuate portions 21 and 21 curved in a substantially semicircular arc shape are connected, but the number of arcuate portions 21 constituting the ring portion 20 is limited. Instead, the configuration may be such that three arc-shaped portions curved in an arc shape or four arc-shaped portions are connected in a cylindrical shape.

A thin-walled joint 22 is formed between the circumferential ends of the two adjacent arcuate portions 21 and 21. Specifically, the peripheral end of one arcuate portion 21 in the circumferential direction is connected to the peripheral end of the other arcuate portion 21 in the opening direction via a thin-walled joint 22. Further, the end of one arcuate portion 21 in the circumferential direction on the opening direction side is connected to the other arcuate portion 21 on the circumferential direction side end via a thin-walled connecting portion 22.

The thin-walled connecting portion 22 is located at the lower end portion opposite to the side of the outer surface portion 11 of the arc-shaped portion 21, and the lower end of the thin-walled connecting portion 22 is formed flush with the lower end of the arc-shaped portion 21. The inner surface of the thin-walled joint 22 is formed flush with the inner peripheral surface of the arcuate portion 21. The thin-walled connecting portion 22 is formed so that the outer peripheral side is cut out in a substantially V shape in the bottom view, the wall thickness in the radial direction becomes thin, and the width thereof becomes narrow in the circumferential direction. Further, as shown in FIGS. 3 and 7, the thin-walled connecting portion 22 has a substantially V-shaped cutout on the upper side, which is the side of the outer surface portion 11, and its width in the vertical direction and the circumferential direction is reduced. It is formed to be narrow. Here, FIG. 9A is an enlarged view of the VI portion of FIG. 9B, and is an enlarged view of the periphery of the thin-walled joint portion 22. The thin-walled joint portion 22 having a thin wall thickness is configured to be breakable at the time of opening. The thin-walled connecting portion 22 may have a structure that connects the arc-shaped portions 21 and can be broken at the time of opening, and the position where the thin-walled connecting portion 22 is formed is not limited. However, from the viewpoint of transportability of the cap 1, it is preferable that the lower end of the thin-walled connecting portion 22 is formed flush with the lower end of the arc-shaped portion 21, and another cap 1 is placed in the gap between the adjacent arc-shaped portions 21. Entanglement is prevented. Further, the ring portion 20 may have a configuration in which adjacent arc-shaped portions 21 are connected in a cylindrical shape by a plurality of thin-walled connecting portions 22.

The arc-shaped portion 21 each has a ratchet claw 23 that projects inward from the inner peripheral surface. The ratchet claw 23 is formed corresponding to the ratchet protrusion described later, which is formed on the mouth of the container. The ratchet claw 23 is formed on the side in the opening direction with reference to the center in the circumferential direction of the arcuate portion 21. The end surface of the ratchet claw 23 on the opening direction side and the inner peripheral surface of the arc-shaped portion 21 (passing through the joint between the end surface of the ratchet claw 23 on the opening direction side and the inner peripheral surface of the arc-shaped portion 21 and the inner peripheral surface of the arc-shaped portion 21. The angle formed by the surface in contact with the surface) is an acute angle. On the other hand, the end surface of the ratchet claw 23 on the closing direction side and the inner peripheral surface of the arcuate portion 21 (passing through the joint portion between the end surface of the ratchet claw 23 on the closing direction side and the inner peripheral surface of the arcuate portion 21 and passing through the joint portion of the arcuate portion 21. The angle formed by the surface in contact with the inner peripheral surface) is an obtuse angle. The ratchet claw 23 does not fit with the ratchet protrusion of the mouth when closing the mouth of the container, and fits with the ratchet protrusion of the mouth when opening the mouth and has an arcuate portion. Any shape may be used as long as the rotation of the 21 in the opening direction is restricted, and the shape and configuration thereof are not particularly limited.

Here, as shown in FIGS. 9A and 9C, the diameter of the ring portion 20 is expanded from the lower end opposite to the side of the outer surface portion 11 toward the upper side of the outer surface portion 11. It has a tapered portion 24 to be formed. That is, the two arcuate portions 21 and 21 constituting the ring portion 20 are formed with a tapered portion 24 whose diameter increases upward from the lower end. Although the upper end of the tapered portion 24 is located above the upper end of the thin-walled connecting portion 22, the range of the tapered portion 24 is not limited. However, from the viewpoint of releasability from the mold, the upper end of the tapered portion 24 is located above the upper end of the thin-walled joint portion 22, and the thin-walled joint portion 22 is included in the region of the tapered portion 24 in front view. Is preferable.

The connecting connecting portion 30 is formed corresponding to each arc-shaped portion 21 of the ring portion 20. Here, connecting connecting portions 30 and 30 corresponding to the two arc-shaped portions 21 and 21 are formed. As shown in FIGS. 3 and 9, the connecting joint portion 30 has a first connecting portion 31 extending inward from the end of the arcuate portion 21 on the closing direction side and an inner side of the first connecting portion 31. It is composed of a second connecting portion 32 extending in the circumferential direction and the closing direction from the end of the second connecting portion, and a third connecting portion 33 extending from the end on the closing direction side of the second connecting portion to the outer surface portion 11.

More specifically, the first connecting portion 31 is an end of the arcuate portion 21 on the closing direction side, and extends horizontally inward from the upper end on the cap body 10 side. The first connecting portion 31 extends to a position corresponding to the inner peripheral surface of the lower end portion of the outer surface portion 11 in the bottom view. The second connecting portion 32 extends horizontally from the inner end of the first connecting portion 31 in the plugging direction along the inner peripheral surface of the lower end portion of the outer surface portion 11 in the bottom view. The first connecting portion 31 and the second connecting portion 32 are connected in a substantially L shape in the bottom view. The second connecting portion 32 extends in the circumferential direction and the closing direction beyond the thin-walled connecting portion 22 to a position corresponding to the end portion of the adjacent arc-shaped portion 21 on the opening direction side. The third connecting portion 33 extends vertically from the end on the closing direction side of the second connecting portion and is connected to the lower end which is the open side end of the outer surface portion 11. The second connecting portion 32 and the third connecting portion 33 are connected in a substantially L shape in front view. That is, the connecting joint portion 30 is formed in a crank shape that is bent at a right angle twice in the opening direction and the outward direction in the radial direction from the side of the cap main body 10 toward the side of the ring portion 20. The connecting joint portion 30 is configured so as to be deformed and not broken at the time of opening, unlike the thin-walled joint portion 22 described above.

The connecting joint portion 30 is not limited to the above-mentioned configuration, and is not broken at the time of opening, and the end connected to the outer surface portion 11 and the end connected to the ring portion 20 (arc-shaped portion 21) are formed. Any configuration may be used as long as there is a deviation in the circumferential direction and the radial direction, and the first connecting portion 31, the second connecting portion 32, and the third connecting portion 33 are formed in a curved shape, respectively. Is also good. However, from the viewpoint of the explicitness of the initial opening, in the connecting joint portion 30, the first connecting portion 31 and the second connecting portion 32 are connected in a substantially L shape in a plan view, and the second connecting portion 32 and the second connecting portion 32 are connected. A crank in which the connecting portions 33 of 3 are connected in a substantially L shape in front view, and are bent twice at right angles in the opening direction and the outward direction in the radial direction from the side of the cap body 10 toward the side of the ring portion 20. A structure formed in a shape is preferable.

Here, the arc-shaped portion 21 has a thin-walled portion 25 having a thin wall thickness formed between the first connecting portion 31, which is a connecting portion to which the connecting connecting portion 30 is connected, and the ratchet claw 23 in the circumferential direction. Has. The thin-walled portion 25 is formed so that the outer peripheral side of the arc-shaped portion 21 is cut out in a substantially trapezoidal shape in the bottom view so that the wall thickness in the radial direction becomes thin. The thin-walled portion 25 is located in the vicinity of the first connecting portion 31, and extends vertically from the upper end on the side of the outer surface portion 11 to the lower end on the side opposite to the side of the outer surface portion 11. The thin-walled portion 25 is configured to be deformed and not broken at the time of opening, similarly to the connecting joint portion 30. The thin-walled portion 25 may be formed between the first connecting portion 31 and the ratchet claw 23 so as to extend from the upper end to the lower end of the arc-shaped portion 21. However, from the viewpoint of the explicitness of the initial opening, the thin-walled portion 25 is preferably formed in the vicinity of the first connecting portion 31. Further, the thin-walled portion 25 is preferably formed by cutting out the outer peripheral side of the arc-shaped portion 21 from the viewpoint of explicitness of initial opening, but may be formed by cutting out the inner peripheral side, and is formed from the upper end to the lower end. It may be formed so as to be inclined in the circumferential direction.

Further, the cap 1 has a reinforcing connecting portion 26 between the ratchet claw 23 of the arc-shaped portion 21 and the lower end which is the end on the open side of the outer surface portion 11. The reinforcing joint portion 26 is an inner end of the ratchet claw 23, extends vertically from the upper end on the side of the outer surface portion 11, and is connected to the lower end which is the end on the open side of the outer surface portion 11. The reinforcing joint portion 26 is configured to be breakable at the time of opening, similarly to the thin-walled joint portion 22 described above. Although the cap 1 may not be provided with the reinforcing connecting portion 26, the reinforcing connecting portion 26 as described above may be provided from the viewpoint of injection moldability and prevention of breakage of the thin-walled connecting portion 22 before the initial opening. The configuration provided is preferable.

Further, as shown in FIG. 9B, the cap 1 has an arc-shaped portion side pedestal 27 protruding upward from the upper end on the side of the outer surface portion 11 of the arc-shaped portion 21 to the side of the outer surface portion 11, and the outer surface portion 11. It is provided with a tubular portion side pedestal 28 that protrudes downward from the lower end, which is the end on the open side, to the side of the arcuate portion 21. The arc-shaped portion side pedestal 27 is formed in the vicinity of the end portion of the arc-shaped portion 21 on the opening direction side. The tubular portion side pedestal 28 is formed at a position corresponding to the end portion of the arcuate portion 21 on the closing direction side. The arc-shaped portion side pedestal 27 and the tubular portion side pedestal 28 are arranged so as to sandwich the connecting joint portion 30 in the circumferential direction. Further, the tubular portion side pedestal 28 is further formed at a position corresponding to substantially the center of the arcuate portion 21 in the circumferential direction.

Then, the distance between the cap body 10 and the ring portion 20 is narrowed at the place where the arc-shaped portion side pedestal 27 or the tubular portion side pedestal 28 is formed. The arc-shaped portion side pedestal 27 and the tubular portion side pedestal 28 may have a configuration in which the distance between the cap body 10 and the ring portion 20 is partially narrowed, and the configuration is not particularly limited. For example, the configuration may include only one of the arcuate side pedestal 27 and the tubular portion side pedestal 28. Further, although the cap 1 may not be provided with the arc-shaped portion side pedestal 27 or the tubular portion side pedestal 28, it has injection moldability, prevents the thin-walled joint portion 22 and the reinforcing joint portion 26 from breaking before the initial opening, and the like. From the viewpoint, a configuration including the arc-shaped portion side pedestal 27 and the tubular portion side pedestal 28 as described above is preferable.

The cap 1 according to the present embodiment having the above-described configuration is attached to the mouth of the container by the engagement of the screws 13, and when the cap body 10 is rotated in the opening direction at the time of initial opening. The ratchet claw 23 fits into the ratchet protrusion formed on the mouth of the container to restrict the rotation of the arcuate portion 21 in the opening direction, and further, by rotating the cap body 10 in the opening direction, the thin-walled connecting portion 22 Is configured to be able to indicate that the ratchet was broken and the initial opening was performed.

The cap 1 is made of a thermoplastic resin and is formed by injection molding or the like. The thermoplastic resin as a raw material for the cap 1 is not particularly limited as long as it has excellent moldability, has flexibility, and does not hinder hygiene even if it comes into contact with the contents. For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polyolefins such as polypropylene and the like can be used, and further, these thermoplastic resins may be mixed. Further, the size of the cap 1 is not limited, and can be appropriately designed according to the size of the mouth portion of the container to be attached.

In the container with a cap according to the present embodiment, the cap 1 described above is attached to the mouth of the container. FIG. 7 is an enlarged front view of a main part showing an example of a container 60 to which the cap 1 according to the present embodiment is attached. FIG. 7 illustrates a container 60 in which the mouth portion 40 is attached to the pouch 55, and the pouch 55 is shown by a chain double-dashed line.

The mouth portion 40 is a filling port, a spout, or a drinking port for the contents, and has a circular opening 42 at the upper end and a cylindrical shape having a screw 43 that meshes with the screw 13 of the cap 1 on the outer peripheral surface. Has a nozzle portion 41 of the above.

The nozzle portion 41 has two ratchet protrusions 44, 44 protruding outward from the outer peripheral surface below the screw 43. The ratchet protrusions 44 and 44 are formed corresponding to the ratchet claws 23 and 23 of the cap 1 described above, respectively. In a plan view, the end surface of the ratchet protrusion 44 on the opening direction side and the outer peripheral surface of the nozzle portion 41 pass through the joint portion between the end surface of the ratchet protrusion 44 on the opening direction side and the outer peripheral surface of the nozzle portion 41, and the nozzle portion 41 The angle formed by the surface in contact with the outer peripheral surface is an obtuse angle, and the end surface of the ratchet protrusion 44 on the closing direction side and the outer peripheral surface of the nozzle portion 41 (the end surface of the ratchet protrusion 44 on the closing direction side and the outer peripheral surface of the nozzle portion 41). The angle formed by the surface of the nozzle portion 41 that passes through the joint portion and is in contact with the outer peripheral surface of the nozzle portion 41 is a sharp angle. The two ratchet protrusions 44, 44 are formed so that the ratchet claws 23, 23 are located between the two ratchet protrusions 44, 44 in the circumferential direction when the cap 1 is attached to the mouth portion 40. ing.

The nozzle portion 41 has a plate-shaped reinforcing flange 45 that protrudes outward from the outer peripheral surface and has a substantially circular outer shape in a plan view. The lower part of the ratchet protrusion 44 is connected to the upper surface of the reinforcing flange 45, and the strength of the ratchet protrusion 44 is improved. The outer peripheral edge of the reinforcing flange 45 corresponds to the inner peripheral surface of the ring portion 20 of the cap 1, that is, the inner peripheral surface of the arcuate portion 21. When the cap 1 is attached to the mouth portion 40, the outer peripheral edge of the reinforcing flange 45 is formed along the inner peripheral surface of the arcuate portion 21. The nozzle portion 41 further has a plurality of flanges 46, 47, 48 below the reinforcing flange 45.

At the lower end of the nozzle portion 41, plate-shaped adhesive portions 49, 49 are formed which are symmetrically extended in the radial direction from the outer peripheral surface and are formed to be thinner toward the end portion. The upper end of the bonded portion 49 is connected to the lower surface of the flange 48 located at the lowermost position. The adhesive portions 49, 49 have a substantially boat shape in a plan view, and are used for attaching the mouth portion 40 to the pouch 55.

As shown in FIGS. 5 and 7, the mouth portion 40 has a connecting portion 50 extending downward from the lower end of the nozzle portion 41 in a leg shape. The connecting portion 50 is located inside the pouch 55. The connecting portion 50 is formed with a container-side opening 51 that communicates with the inside of the nozzle portion 41. The opening 42 of the nozzle portion 41 and the container-side opening 51 of the connecting portion 50 are communicated with each other via the inside of the nozzle portion 41, and the inside of the nozzle portion 41 serves as a flow path for the contents of the container 60. Further, the mouth portion 40 has a blockage prevention member 52 extending downward from the lower end of the connecting portion 50. The blockage prevention member 52 has a substantially cross-shaped horizontal cross section and is located inside the pouch 55. The blockage prevention member 52 prevents the inner surfaces of the laminated films constituting the pouch 55 from coming into close contact with each other, and improves the pouring property of the pouch 55.

Like the cap 1, the mouth portion 40 having the above-mentioned structure is made of a thermoplastic resin and is formed by injection molding or the like. The thermoplastic resin as a raw material for the mouth portion 40 may be any as long as it has excellent moldability and does not hinder hygiene even if it comes into contact with the contents, and the same material as the cap 1 can be used and is not particularly limited. ..

The pouch 55 is formed by stacking flexible films and adhering the peripheral portions thereof to form a bag shape. Then, the front side surface 49f of the adhesive portion 49 is adhered to the inner surface on one side of the pouch 55, and the back surface side surface of the adhesive portion 49 (not shown) is adhered to the inner surface on the other side of the pouch 55. The adhesion between the adhesive portion 49 and the pouch 55 (inner surface) is preferably heat-sealed, but may be attached by an adhesive or the like.

Further, the packaging form of the container 60 is not particularly limited, and in addition to the illustrated pouch 55, a standing pouch, a two-way seal bag, a three-way seal bag, a four-way seal bag, a gusset bag, a pillow packaging bag, a square bottom bag, etc. It can be selected and used from various packaging forms such as others.

Further, the container 60 has a screw that engages with the screw 13 of the cap 1 to attach the cap 1, and a ratchet protrusion that is fitted with the ratchet claw 23 of the cap 1 to restrict the rotation of the arcuate portion 21 in the opening direction. Any container having a mouth may be used, and the container may be a paper container, a bottle, or the like, not limited to the above-mentioned packaging container.

Next, the flow at the time of opening will be described in detail. At the time of opening, a finger is caught on the protrusion 4 of the streak, and a force is applied to the caught portion and the finger is turned in the opening direction to open the cap. At that time, in the present embodiment, the opening direction is clockwise, but may be counterclockwise. In the present embodiment, as shown in FIG. 1, the opening direction X is counterclockwise, but the opening direction X ′ may be clockwise. In that case, the protrusion 4 of the streak also hangs down from the top surface portion 12 from the diagonally upper right direction to the diagonally lower left direction from the top surface portion 12.
FIG. 3 is a diagram showing the cap of the present embodiment, but by putting a finger on the protrusion 4 of FIG. 3 and turning the cap 1 counterclockwise as in the X direction of FIG. 1 (b), the cap 1 is turned. The cap 1 that was fitted to the nozzle portion 41 is disengaged and separated from the nozzle portion 41. At that time, it is as shown in FIG. 4 in this embodiment. The ring portion 20 constituting the pilfer proof band is then separated into an arc-shaped portion 21 and has an elliptical arc shape. This makes it easy to clearly indicate the initial opening. However, although the pilfer proof band of this embodiment is used in the present embodiment, the prefer proof band used in the present invention may be another known prefer proof band as long as the initial opening can be determined. good.

The wall thickness of the thin-walled connecting portion 22 is preferably 0.2 mm or more and 0.6 mm or less, and the thin-walled connecting portion 22 is preferably thin-walled joint portion, from the viewpoints of explicitness of initial opening, openability, attachment to the mouth portion 40, and the like. The circumferential width of 22 is preferably 0.1 mm or more and 1.0 mm or less, and the vertical width of the thin-walled joint 22 is preferably 0.2 mm or more and 1.0 mm or less. If the wall thickness, width, and width of the thin-walled joint 22 are within this range, the thin-walled joint 22 will not be broken during injection molding or when the cap 1 is attached to the mouth 40, and the package will be further opened. In some cases, it can be preferably broken.

The wall thickness of the thin portion 25 is preferably 0.3 mm or more and 1.0 mm or less, and the circumferential width of the thin portion 25 is preferably 0.5 mm or more and 3.0 mm or less. If the wall thickness and width of the thin-walled portion 25 are within this range, the arc-shaped portion 21 is unlikely to be deformed with the thin-walled portion 25 as the fulcrum before the initial opening, and the arc-shaped portion 21 uses the thin-walled portion 25 as the fulcrum at the time of initial opening. It is suitably bent, and the function of clearly indicating the initial opening by the ring portion 20 is effectively exhibited. Further, the thin-walled portion 25 is preferably formed in the vicinity of the first connecting portion 31, and at the time of initial opening, the arc-shaped portion 21 is easily bent favorably with the thin-walled portion 25 as a fulcrum, and the initial opening by the ring portion 20. The open opening function is improved.

Further, in the connecting joint portion 30, the radial length L1 of the first connecting portion 31 is preferably 0.2 mm or more and 1.5 mm or less, and the circumferential length of the second connecting portion 32. L2 is preferably 0.2 mm or more and 3.0 mm or less, and the vertical length L3 of the third connecting portion 33 is preferably 0.2 mm or more and 1.5 mm or less (FIG. 9). reference). The radial length L1 of the first joint portion 31 is the distance from the inner peripheral surface of the arcuate portion 21 to the second joint portion 32, and the circumferential length L2 of the second joint portion 32. Is the distance from the end of the first joint portion on the closing direction side to the end of the third joint portion on the opening direction side, and the vertical length L3 of the third joint portion 33 is the second. It is a distance from the upper end of the connecting portion 32 to the lower end of the outer surface portion 11. If the length L1 of the first connecting portion 31, the length L2 of the second connecting portion 32, and the length L3 of the third connecting portion 33 are within this range, the connecting connecting portion 30 will be used before the initial opening. It is not easily deformed, and the connecting joint portion 30 is suitably deformed at the time of initial opening, and the function of clearly indicating the initial opening by the ring portion 20 is effectively exhibited.

As described above, the cap 1 according to the present embodiment is attached to the mouth 40 of the container 60 by the engagement of the screws 13 and is configured to be able to clearly indicate that the initial opening has been performed. , The ridged cylindrical cap body 10 having the outer surface portion 11 on which the screw 13 is formed on the inner peripheral surface, and the two arcuate portions 21 and 21 curved in an arc shape are the thin-walled joint portions 22, 22 that can be broken at the time of opening. It is provided with a ring portion 20 connected in a cylindrical shape via the above, and two connecting connecting portions 30 and 30 connected to each of the two arc-shaped portions 21 and 21 and the open end of the outer surface portion 11. The arcuate portion 21 has a ratchet claw 23 that is fitted to the ratchet protrusion 44 formed in the mouth portion 40 and is restricted from rotating in the opening direction of the arcuate portion 21, and the connecting joint portion 30 has an arcuate shape. A first connecting portion 31 extending inward from the end on the closing direction side of the portion 21, and a second connecting portion 32 extending in the circumferential direction and the closing direction from the inward end of the first connecting portion 31. , A third connecting portion 33 extending from the end of the second connecting portion on the closing direction side to the outer surface portion 11.

According to the configuration according to the present embodiment, in the cap 1 after the initial opening, the ring portion 20 is divided into two arcuate portions 21, the connecting joint portion 30 is deformed, and the arcuate portion 21 faces the opening direction. It is connected to the cap body 10 in a state of being inclined downward and expanded outward in the radial direction, and the arcuate portion 21 itself is also deformed so as to bend outward. That is, the cap 1 can clearly indicate that the initial opening was performed by the deformation of the ring portion 20 not only from the side but also from above. Further, since the form of the ring portion 20 after the initial opening is significantly different from the form before the initial opening, it is possible to easily and surely make the consumer recognize that the initial opening has been performed.

Therefore, according to the present embodiment, the pilfer proof cap 1 and the container with pilfer proof cap 65, which are easy to open and which clearly indicates that the initial opening has been performed, are provided. Can be done.

The present invention relates to a cap 1 attached to the mouth 40 of the container 60 by the engagement of the screw 13 and configured to clearly indicate that the initial opening has been performed, and a container with a cap 65 provided with the cap 1, in particular, 2. It can be suitably used for a form having a small size such that the cap body 10 is picked up with one finger, for example, a thumb and an index finger and opened. However, the present disclosure is not limited to the embodiments described above. The contents filled in the capped container 65 of the present disclosure are not particularly limited as long as they have fluidity, and may be foods such as beverages and seasonings, daily necessities such as cosmetics, detergents and pharmaceuticals, and others. good. Further, in the container with a cap 65 according to the present disclosure, since the ring portion 20 does not remain in the mouth portion 40 when the container is initially opened, it is possible to prevent the ring portion 20 from being mixed or accidentally swallowed, and the contents are orally directly from the mouth portion 40. It is also suitable for such containers.

1 Cap (Pilfer Proof Cap)
3 Lower end 4 Protrusion 10 Cap body 11 Outer side surface 12 Top surface 13 Screw 15 Top surface recess 16 Inner ring 17 Contact ring 20 Ring part 21 Arc-shaped part 22 Thin-walled connecting part 23 Ratchet claw 24 Tapered part 25 Thin-walled part 26 Reinforcing connection part 30 Connecting joint 40 Mouth 43 Screw 44 Ratchet protrusion 55 Pouch 60 Container 65 Capped container (Pilfer proof capped container)

Claims (6)

In a cap having a top surface portion, an outer surface portion, an inner side surface portion, and a lower end portion, the inner side surface portion being a cylindrical cap, the outer surface portion being cylindrical, and the cap hanging from the top surface portion, the outer surface portion is It has a plurality of streak protrusions, and the streak protrusions are continuously provided from the top surface portion or its vicinity to the lower end portion or its vicinity, and one end of the streak protrusion and others. Of the angles formed by the straight line passing through the end and the top surface portion or the same plane thereof, the virtual angle formed on the lower end portion side and in the opening direction of the cap is an acute angle, and the line on the outer surface portion. A cap characterized by providing a large number of circular protrusions on the surface sandwiched between the protrusions of the strip . The cap according to claim 1, wherein the angle of the virtual angle is 45 degrees to 85 degrees. The protrusions of the streaks are provided at equal intervals so as not to intersect at least a part of the outer surface portion, and the interval is 0.5 mm to 15 mm. Or the cap according to 2. 3 . The cap described. The cap according to any one of claims 1 to 4, wherein the protrusion of the streak bends in the closing direction above the start point and bends in the opening direction below the end point. .. The cap according to any one of claims 1 to 5, wherein a pilfer proof band is provided at the lower end portion.

Images