JP4560127B1 - End ring removal structure of resin bottle cap and container provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an end ring removing structure for a resin bottle cap and a container provided with the same for easily removing an end ring remaining on the bottle body side from the bottle body when the lid of the bottle cap such as a PET bottle is opened.
A barb body 250 formed on an end ring 25 remaining in a bottle body 1 is divided by a guide barb non-installing portion 255 in a state where the barbing body 250 is not formed in a part of the end ring 25. The flange 15 is formed with a guide flange cutout portion 151 in a part thereof, and a removal start fixed point setting state in which the guide barb not-inserted portion 255 and the guide flange cutout portion 151 are arranged adjacent to each other is set. The effective guide zone Z is released in a part of the restriction by the ring stop upper flange 15 for the end ring, and the removal guide inclined posture at the start of the removal is displayed on the end ring 25 at this portion. It is characterized by that.
[Selection] Figure 1

Description

  The present invention relates to a resin bottle cap end ring removing structure and a container including the same, for easily removing an end ring remaining on the bottle body side from the bottle body when opening a cap of a bottle cap such as a PET bottle. is there.

  Recently, so-called PET (PET) bottles made of polyethylene terephthalate as a main material have become widespread as beverage containers. When collecting and recycling these PET bottles, it is desirable to collect them as a single material as much as possible, and at least the cap body and wrap film, which are different materials, can be easily removed from the results of social enlightenment. In the removed state, it is brought into the collection. However, the cap is provided with an end ring that remains on the bottle body side through the weakened part so that the state of the lid being opened can be confirmed, and since removal of this member is extremely troublesome, in most cases, The current situation is that the bottle body is recovered with the end ring attached. In consideration of such a current situation, proposals have been made for hand tools that make it easy to remove the end ring, proposals that devise the mutual structure of the cap and the bottle body, and the like. Of these, regarding hand tools, it is not realistic to ask for consciousness until a general household prepares hand tools. In addition, regarding the configuration of the container itself, many practical improvements that can maintain the mass production system of the current product have not been proposed and have not appeared in the actual market.

  As a prior art related to the present invention, there is JP-A-2006-232392 “a bottle-type resin container with a cap that can easily remove a cap-circular band from a bottle mouth”. As a technical point of view, the ring stop upper flange (bottle mouth circumferential protrusion 8) that restricts the end ring (cap circumferential band) from being partly cut out is partially cut into a slope shape, and the end ring A protrusion 13 that guides the flap (projection piece 7) of the end ring is formed in the slope-shaped notch in the slope-shaped notch, and the end ring is ringed starting from this notch by rotating the end ring. It is configured to be removed from the stopper upper flange. However, in this prior art, since the end ring is sandwiched between the upper and lower ring retaining flanges and the overall deformation is restricted, it is actually a sufficient deformation state to be guided by the notch. If you can't get it, or if you want to make it appear, you'll need maneuvering power that can be called mysterious power.

JP2006-232392

  The present invention has been made in consideration of such a situation, and when removing the end ring, it is easy to simply tilt the end ring without assuming the end ring itself to be deformed. The present invention is to propose a novel end ring removal structure and a container equipped with the same, which can be reliably removed.

The end ring removal structure of the resin bottle cap according to claim 1 is attached to the bottle cap attached to the lid closing portion of the bottle body, and is separated from the cap body when the lid is opened, and remains in the ring storage portion of the bottle body. In the structure to remove and remove from the bottle body,
The ring storage portion is formed by a substantial recess between the ring-stop upper flange and the ring-stop lower flange, and the ring-stop upper flange is opened at the guide flange cutout portion. although it is, in the ring matches side has a shape that does not protrude the collision force,
In addition, the end ring has a retaining body that prevents contact with an upper flange for retaining the ring on the inner circumferential side of the end ring, and the covering body does not form a covering body in a certain range. It is configured to be divided by a non-setting part for guiding
On the other hand, the ring-stop upper flange forms a guide flange notch in a part thereof,
By setting the removal start fixed point setting state in which the guide bar non-installing portion and the guide flange notch portion are arranged adjacent to each other, the size of the guide bar non-installing portion arranged adjacent to each other, An effective induction zone in the range consisting of the sum of the notch dimensions of the guide flange notch is secured, and in this effective induction zone, the restriction by the upper ring flange on the end ring is released in part, and the end ring On the other hand, it is characterized in that a removal-inducing inclination posture at the start of the removal is made to appear.

  The end ring removal structure of the resin bottle cap according to claim 2 is characterized in that, in addition to the requirement of claim 1, the pair of notch end surfaces forming the guide flange notch are at least in the operation direction side. The cut-out end face in FIG. 1 is characterized in that it constitutes a guide inclined face toward the removal operation direction side.

  The resin bottle cap end ring removing structure according to claim 3 is characterized in that, in addition to the requirements of claim 2, the removing operation direction is opposite to the loosening direction of the bottle cap. is there.

  The end ring removal structure of the resin bottle cap according to claim 4 is characterized in that, in addition to the requirement according to claim 1, 2, or 3, the effective induction zone is 50 ° to 100 ° in a circumferential range of the bottle lid closing portion. It is characterized by being set in the range of °.

  Further, the end ring removing structure of the resin bottle cap according to claim 5 is the size of the guide non-installed portion in addition to the requirement of claim 1, 2, 3 or 4, The guide flange is characterized by being set to a dimension that is the same as or shorter than the notch dimension that is the dimension of the guide flange notch.

  In addition to the requirements described in the above 1, 2, 3, 4 or 5, the resin bottle cap end ring removing structure according to claim 6 has a removal start fixed point setting state between the end ring and the bottle body. It is characterized by the fact that an indicator is provided for causing

  According to a seventh aspect of the present invention, in the resin bottle cap end ring removing structure, in addition to the requirement of the sixth aspect, the indicator is formed by cutting out a part of the ring stopper lower flange provided below the ring stopper upper flange. In addition to forming an alignment recess, the alignment recess corresponding to the end ring is also formed.

  Furthermore, in addition to the above-mentioned requirements of 1, 2, 3, 4, 5, 6 or 7, the resin bottle cap end ring removing structure according to claim 8 is an initial plugging when the bottle cap is manufactured in the bottle body. In this regard, the stop position of the end ring integrated with the bottle cap at the time of initial closure is characterized in that the end ring side indicator is shifted from the container side indicator to the loose side of the bottle cap.

  A container having an end ring removing structure for a resin bottle cap according to claim 9 is characterized by comprising the end ring removing structure for a resin bottle cap according to any one of claims 1 to 8. .

  In addition to the requirement of the above-mentioned claim 9, the container provided with the end-ring removal structure of the resin bottle cap according to claim 10 is provided with an operation explanation for removing the end ring. It is characterized by this.

  First, according to the first aspect of the present invention, if the end ring is set to the removal start fixed point setting state, an effective guidance zone for the removal operation is secured only at that time, and the removal guide inclination posture is reliably secured to the end ring. The end ring can be easily and surely removed. On the other hand, in the stage before opening the cap, the guide bar non-installing portion and the guide flange notch portion are not adjacent to each other, and unless the removal start fixed point setting state is set, regarding the regulation of the end ring and the ring stopper upper flange, The non-regulatory ranges are distributed to each other, and as a result, the end ring cannot be removed and the induced inclination posture cannot be obtained. Therefore, the end ring is held substantially in the same manner as in the prior art, and the presence of the end ring removal structure is inconvenient even in the process of closing the lid during manufacturing and even when the consumer opens the lid. Does not bring

  According to the second aspect of the present invention, after the removal guiding inclined posture is revealed, the removal start operation can be performed even if the end ring is hardly deformed, and the end ring can be smoothly rotated. The removal operation can be performed easily and reliably.

  Further, according to the invention described in claim 3, it is possible to surely avoid the occurrence of a phenomenon that the end ring is detached when the cap body is opened.

  According to the invention described in claim 4, since the effective induction zone is a range of about 1/4 of the entire circumference of the bottle lid closing part, there is a sufficient rotation range for separating the end ring when the cap body is opened. As a result, it is possible to open the plug while avoiding the phenomenon that the end ring is detached.

  According to the fifth aspect of the present invention, a practically sufficient effective induction zone can be secured by setting the respective dimensions of the guide flange notch and the guide barb not provided portion.

  Further, according to the invention described in claim 6, when removing the end ring, by aligning an appropriate mark on the indicator, it is possible to easily remove the guide barbed non-installed portion and the guide flange cutout portion adjacent to each other. The start fixed point setting state can be obtained, and the end ring removal operation can be started easily.

  Further, according to the seventh aspect of the present invention, the indicator is formed by a depression, the instruction by the indicator is further clarified, and the operation can be performed even in a groping state. This means, for example, that even a visually impaired person can be surely operated, and a product corresponding to a so-called universal design can be provided.

  According to the invention of claim 8, the end ring is not inadvertently detached when the bottle cap is initially opened.

  According to the ninth aspect of the present invention, a container having a structure for removing each of the end rings is provided, the function as the container is improved, and so-called ecological treatment can be performed.

  Further, according to the invention of claim 10, since the end ring removal method is displayed on the bottle side, this actively prompts the consumer to remove the end ring when collecting the plastic bottle or the like. it can.

It is a partially broken perspective view which expands and shows the container to which this invention is applied partially. It is a perspective view which shows the state which expanded the lid closing part of the container same as the above, and the end ring was settled in the bottle main body, and the state which isolate | separated this. It is a longitudinal cross-sectional side view same as the above, and shows the state which fitted the bottle cap with respect to the bottle main body, and the state isolate | separated. It is sectional drawing which expands and shows the latching state of an end cap, a bottle main body, and an end ring. It is a side view which shows the state which removes an end ring from a bottle main body sequentially. It is a side view which shows the other Example of the flange notch part for guidance in a bottle main body. It is another Example of the indicator for aligning in the case of removal of a bottle main body and an end ring. It is a partially expanded perspective view which shows the Example which provided the operation description display for the removal of the end ring in a container.

  The mode for carrying out the present invention is not limited to the embodiments described below, and includes various modes that can be modified within the technical idea of the present invention.

  Hereinafter, the present invention will be described in detail based on illustrated embodiments. First, reference numeral C denotes a container to which the present invention is applied. This container is roughly divided into a bottle body 1 and a bottle cap 2, and an end ring that is separated from the bottle cap 2 described later between them. An indicator 3 is provided as a clue to 25 removal operations. The bottle body 1 is a resin container called, for example, a transparent PET bottle made of, for example, polyethylene terephthalate (PET) as a main material, and is attached so that a wrap 10 is separately wound around the body 11. The wrap 10 and the bottle cap 2 are usually different from the resin material constituting the bottle body, and when the bottle body 1 is collected, it is desired that these be removed and collected.

  First, the bottle body 1 will be further described. The body portion 11 of the bottle body 1 has an appropriate volume of about 100 to 2000 cc such as a rectangular tube shape, a cylindrical shape, or a hexagonal tube shape. A lid closing portion 12 is formed on the top of the trunk portion 11, and the lid closing portion 12 referred to here is roughly the range in which the bottle cap 2 is generally covered from the shoulder portion of the trunk portion 11. And a lid closing part. At the upper end of the lid closing portion 12, the spout 13 is opened, and a male thread 14 is appropriately formed from the vicinity of the spout 13 downward. In addition, the external thread 14 has an appropriate shape such as a continuous spiral external thread shape and a part of the external thread 14 being appropriately cut off. Further, a ring stopper upper flange 15 is formed further below the male thread 14. Further, a lower ring-stopping flange 16 is formed below the upper ring-stopping flange 15, and the diameter of the lower ring-stopping lower flange 16 is usually larger. The ring stop lower flange 16 is used as an example of a forming part, and the container side indicator 31 in the indicator 3 is provided. The ring stopper upper flange 15 and the ring stopper lower flange 16 are formed so as to be substantially recessed, and this portion is referred to as a ring storage portion 17. The dimension of the ring housing portion 17 in the height direction is set so as to have a backlash so that the end ring 25 moves somewhat up and down while holding the end ring 25 described later. Further, between the upper part of the ring stopper upper flange 15 and the lower part of the male thread 14, the end ring 25, which will be described later, is a part first intended to be removed.

The ring stopper upper flange 15 which is a characteristic part of the present invention has the following configuration. First, as shown in the enlarged view of FIGS. 1 and 4, the ring stopper upper flange 15 is formed with a guide flange notch 151 in a part thereof. Of the pair of notch end surfaces 152 and 153 constituting the guide flange notch portion 151, at least the notch end surface 152 on the removal operation direction side of the end ring 25 is, for example, the removal operation direction of the end ring 25 ( A guiding inclined surface 152f is formed toward the side (indicated by arrow D). The removal operation direction D refers to the direction in which the end ring 25 is rotated after the end ring 25 is rotated as described later, and then rotated, so that the rotation direction is an example in this embodiment. Although the direction is clockwise (in FIG. 5, the arrow points to the left), it is also possible to set it counterclockwise. In this embodiment, the other notch end surface 153 facing is also formed with an inclined surface substantially parallel to the notch end surface 14 on the removal operation direction side. In the embodiment shown in FIGS. 1 to 5, these notch end faces 152 and 153 are not parallel to each other but are somewhat outwardly opened. In particular, with respect to the notch end surface 152, the ridge portion is a guide edge 152e, and the outermost end portion is a top edge portion 152t. In addition, the opening width of the guide flange cutout portion 151 is set to the cutout portion dimension W1, and the lower end of the cutout end surface 152 on the removal operation direction side is guided to start removal of the end ring 25. It becomes point P. In addition, the container side indicator 31 in the above-described ring stopper lower flange 16 is provided at a portion where the guide flange cutout portion 151 is formed.
The ring stopper upper flange 15, although upwards in the guiding flange notches 151 as shown in the drawings are open, such as the ring matches section 17 side, seen in the Patent Document 1 take a shape that does not form a collision cause.

Next, the bottle cap 2 fitted into the bottle body 1 will be described. In this case, a female thread 22 is formed on the inner side of the cap body 21, and the bottle cap 2 is tightened and fixed by screwing with the male thread 14. The cap body 21 is formed integrally with the end ring 25 via the weakening portion 23. Specifically, the weakened portion 23 is integrally formed at a plurality of connection positions scattered at regular intervals. When the cap body 21 is turned in the loosening direction during use, the end ring 25 is while rising is prevented in a ring stop on the flange 15 is blocked, the cap body 21 is raised, weakening 23 receives this increase is rupture, cap body 21 while leaving the end ring 25 is unplugging It will be done. Of course, the separation structure of the end ring 25 and the cap body 21 is not limited to such a form, and a state in which the rotation of the end ring 25 is obstructed at the time of opening is revealed, and then the cap body 21 is twisted and opened. Some of them are separated at the weakening portion 23.

  Hereinafter, the end ring 25 will be described with an example. First, the end ring 25 is provided with a retaining body 250 for retaining the annular ring body 25A on the inner side thereof. In the embodiment of the present invention, the retaining body 250 is constituted by a plurality of pieces of the retaining flap 251. This is illustrated. That is, as shown in FIGS. 1, 2, and 3, the inner side of the ring main body 25A is formed with a flap 251 formed at seven places out of the circumference divided into eight equal parts as an example, and the free end 252 is directed upward. As it heads, it is tilted somewhat inward in the natural state. And the base side is injection-molded integrally with the ring main body 25A.

  Each of these barb flaps 251 has a barb flap width dimension WF, and is provided adjacent to the adjacent barb flap 251 while ensuring a gap 254 between the barb flaps. A part of the guide bar non-installing portion 255 is formed such that one bar flap 251 is eliminated. The width of the guide non-setting portion 255 is set as a non-setting portion dimension W2, which in this embodiment is twice as large as the gap size WG between the flaps with respect to the flap width WF. It becomes the dimension which added. In addition, the barbed portion dimension W2 is set to be the same as or slightly shorter than the cutout portion dimension W1, as shown in FIGS. 1 and 5 (a-1). If this is viewed in a plane, since the barb flap 251 is formed by dividing the circumference into eight equal parts, the barbage dimension W2 is set to an angle of about 45 ° + α in this embodiment. It becomes. Note that the pitch dimension per barb flap 251 is the barb flap pitch dimension WP, which is substantially the sum of the barb flap width dimension WF and the barb flap gap dimension WG. In the description of the removal operation of the end ring 25, the maple flap 251 is also displayed as f1, f2,. The barb flap 251 immediately after the non-setting portion 255 is also expressed as a guidance start flap f1. And among the indicators 3 mentioned above, the end ring side indicator 32 is provided in the site | part in which this guidance start flap f1 is formed.

  In this case, the barb body 250 is not a movable type such as the barb flap 251 as described above, but a fixed number of protrusions or a movable type. There are also those in which the swinging (movable) direction is set to the ring storage portion 17 in the circumferential direction like a neck tightening. In addition, there is a lip-shaped body in which the barb body 250 is not divided, is continuous with the inner peripheral surface of the ring main body 25A, and the upper end edge is in a free state. However, even if it is which form, the operation | movement made into the objective of this invention can be achieved by providing the said barbing part 255 for guidance.

  The first embodiment of the present invention has the configuration as described above, and its operation mode will be described below. Prior to that, functions required for the bottle cap 2 will be described. The bottle cap 2 has different functions required for each situation from the manufacturing stage to the disposal stage, and it is necessary to comprehensively satisfy these different functions. That is, these functions are: (1) initial closure function (manufacturing), (2) transport display function, (3) initial opening function, (4) drinking function, (5) reclosing function, ( 6) Function at restart stopper, (7) Function at disposal.

  First, (1) the function at the time of initial closing (manufacturing) is that the bottle cap 2 with the end ring 25 can be quickly and surely attached to the bottle body 1, and in particular, the end ring 25 smoothly enters the ring housing portion 17. A structure and function that can be used are required. In addition, (2) a reliable function for maintaining capping and a function for maintaining the end ring 25 is required as a transport display function. Further, (3) as an initial opening function, a function is required in which the end ring 25 is smoothly separated from the cap body 21 and reliably remains in the ring storage portion 17. Furthermore, (4) a function at the time of drinking is a function to prevent the end ring 25 from staying in the ring storage portion 17 and changing the posture of touching the lip of the drinker. Furthermore, (5) the function at the time of reclosing is a function in which the end ring 25 approaches the lower end peripheral surface of the cap body 21 and prevents the site from being damaged. Furthermore, (6) the restarting function is a function that completely prevents the occurrence of a situation in which the end ring 25 also comes out in accordance with the opening operation of the cap body 21. And (7) As a function at the time of disposal, it is a function which can remove from the bottle main body 1 very easily the end ring 25 requested | required that it was mounted | worn reliably until then.

  The present invention can realize the (7) structure for removing the end ring 25 of the bottle cap 2 having the function at the time of disposal while satisfying the above functions. In other words, each of the above functions has been practically used except for the function at the time of disposal. Therefore, the essence of the present invention does not hinder the function that has already been practically used. It is in the point where new disposal function is exhibited. That is, the end ring 25 is completely prevented from coming off in normal times, but once it becomes necessary to remove the end ring 25 for disposal, the end ring 25 is removed and removed as follows. Is made easy.

That is, as shown in FIG. 5, first, in the initial state, the container side indicator 31 and the end ring side indicator 32 are aligned using the indicator 3 (see FIGS. 5 (a-1) to (a-5)). . 5 (a-1) to 5 (a-5) are illustrated in a form in which the side surface of the cylindrical lid closing portion 12 is extended in a plane for the sake of explanation.
In this initial preparation state, the removal start fixed point setting state is established in which the guide flange cutout portion 151 and the guide barb non-installation portion 255 are adjacent to each other. When this state is viewed from the end ring 25, there is no upward restriction by the ring stopper upper flange 15. That is, as shown in FIG. 5 (a-1), in the range where the guide flange cutout portion 151 is provided, the end ring 25 is allowed to move upward although the barb flap 251 exists. . On the other hand, in the portion where the ring stopper upper flange 15 adjacent to the guide flange cutout portion 151 on the removal operation direction side is present, the guide bar non-installation portion 255 exists on the end ring 25 side. Even in this range, upward movement is allowed.

This range is defined as an effective induction zone Z, and the dimension is indicated as an effective induction zone dimension W3. The effective guide zone dimension W3 is the sum of the notch part dimension W1 and the barbed non-part part dimension W2, and the state where the effective guide zone Z is formed matches the container side indicator 31 and the end ring side indicator 32. It comes only when the removal start fixed point setting state is reached. In addition, when the range of the effective guidance zone Z is expressed as an angle in plan view, the notch portion dimension W1 is about 45 ° + α, which is about 100 °.
Thus, when the effective guidance zone dimension W3 is ensured, the removal guidance inclination posture of the end ring 25 is easily obtained. That is, as shown in FIGS. 5 (a-2) and 4 (b-2), when the portion of the indicator 3 is pressed upward with a finger or the like, the ring stopper upper flange 15 for regulating the end ring 25 at this portion. Is not allowed to move upward. Further, on the side of the removal operation direction adjacent to it, since there is a guide bar non-installing portion 255 on the end ring 25 side and there is no barb flap 251, even if the upper ring stopper flange 15 exists above it, Also in this part, the upward movement of the end ring 25 is allowed. As a result, as shown in FIGS. 4 and 5, the end ring 25 is microscopically deformed while being held in the ring housing portion 17 and with an additional dimension margin in the vertical direction of the ring housing portion 17. Basically, a posture that only tilts, that is, a removal-induced tilting posture can be easily revealed.

Here, the inclination of the end ring 25 will be described. As shown in FIGS. 4 (b-1) to (b-6) and FIGS. 4 (c-1) to (c-2), the end ring 25 is In the state where it is placed on the lower ring-stopping flange 16, the inclination angle is 0 °. Even in the steady state, the end ring 25 has some play (vertical backlash) due to the vertical margin in the ring storage portion 17, as shown by the phantom line in FIG. 4 (b-1). When the end ring 25 is tilted using this backlash, a tilt angle β0 appears. Further, the inclination angle β1 in the detachment induced inclination state is further larger than the inclination angle β0. As the end ring removal operation proceeds, the inclination angles β2, β3, β4, and β5 further increase as shown in FIGS. 4 (b-2) to (b-5). Embodiments are described below. Note To aid in understanding the inclination angle β0~β5 and shown in FIG. 4, it is exaggerated than actual.

That is, in a state in which such a removal-inducing inclination posture is obtained, the end ring 25 is further rotated clockwise as indicated by an arrow D in FIG. Of the barb flap 251, the first guide start flap f 1, that is, the guide start flap f 1 following the guide barb non-setting portion 255, is cut off at the ring stopper upper flange 15. It rides on the guidance start point P on the notch end surface 152, and is guided upward by the guidance inclined surface 152f (further microscopically, the guidance edge 152e) to shift upward (FIG. 5 (a-3), FIG. b-3) to (b-4)). By continuing this, as shown in FIGS. 5 (a-4) to (a-5) and FIGS. 4 (b-2) to (b-5), the succeeding barb flaps f2, f3 in the barb flap 251 are performed. ... Fn (f7 in this embodiment) sequentially moves from the ring storage portion 17 to the ring withdrawal portion 18 so as to cross the upper ring flange 15 at an angle. At this time, the boundary position where the end ring 25 itself naturally moves from the ring storage portion 17 toward the ring pull-out portion 18 is the position of the top edge portion 152t on the guide edge 152e. As shown in (a-3), the movement tendency toward the ring exit portion 18 side can be obtained with a slight rotation from the removal start fixed point setting state.
More specifically, in the enlarged sectional view taken along line III-III in FIG. 5 (a-3), the maximum diameter portion of the ring stopper upper flange 15, that is, the portion passing through the top edge portion 152t is represented by a top edge line 125tL. When the line passing through the free end 252 in the flap 251 is represented by the free end line 252L, the end ring 25 tends to slip through in the direction of arrow A in the figure as long as the free end line 252L of the barb flap 251 exceeds the top edge line 152tL. Is given. As a result, the end ring 25 is hardly deformed and can be reliably removed by simply tilting the posture. Although the end ring 25 has been pulled out to the ring housing portion 17 side, the lower part of the inner periphery of the end ring 25 is covered with the ring stopper upper flange 15, and as far as shown in FIG. 5 (a-5). As shown in Fig. 3, it is visually expressed as if it was not completely pulled out. After that, it can be removed while rotating counterclockwise, for example, along the loosening direction of the male thread 14. In addition, about such a removal method, as shown in FIG. 8, the operation description display 4 is provided in the bottle main body 1 or the wrap 10, thereby fostering the consumer's consciousness about the removal process of the end ring 25, It encourages separate collection.

  Although the operation for removing the end ring 25, which is the main point of the present invention, has been described above, the relationship between the function required for each situation of the bottle cap 2 described above and the structure for removing the end ring 25 will be described below. . First, at the time of designing, it is possible to prevent the removal start fixed point from being set at the initial closing time by designing the formation positions of the male thread 14 and the female thread 22 in advance. In addition, when the cap body 21 and the end ring 25 are separated from each other at the time of initial closing, in consideration of the rotation of the cap body 21, the stop position of the end ring 25 at the time of initial closing, that is, the bottle cap 2 with the cap body 21. As for the tightening completion position, the end ring side indicator 32 needs to be positioned at an appropriate angle from the container side indicator 31 and shifted to the loose side of the bottle cap 2. When this situation and the positional relationship are defined as an initial closing state or an initial closing position, respectively, and when the deviation between the container side indicator 31 and the end ring side indicator 32 in this state is the initial deviation setting angle θS, FIG. As shown, the initial deviation setting angle θS in the initial closing state may theoretically be about 1 °, but in practice it is set in the range of about 5 ° to 90 °. Then, the bottle cap 2 is turned in the loosening direction (counterclockwise) from the initial closing position, and even if the end ring 25 is cut off in the middle, the end ring 25 is turned together. Assuming that the opening angle is the opening allowance angle θM, the opening allowance angle θM is secured to about 270 ° to 355 °. In many types of bottle caps 2, the cap body 21 and the end ring 25 are completely separated from each other within the opening margin angle θM.

  This situation is required for the bottle cap described above (1) Initial closure (manufacturing) function, (2) Transport display function, (3) Initial opening function, and the closure is reliable The end ring 25 is prevented from falling off even at the initial opening. Once the bottle is opened, the removal start fixed point setting state is extremely limited, that is, the mutual relationship between the bottle body 1 and the end ring 25 is 1 even if an error backlash is expected from 0 ° in the range of 360 ° in one round. As long as it is not in a misalignment state of about 2 ° to 2 °, the removal guide tilt posture, which is a condition for the end ring 25 to come off, cannot be taken. Therefore, this situation satisfies the (4) drinking function, (5) reclosing function, and (6) reopening function required for the bottle cap 2, and the end ring 25 is surely connected to the ring storage portion 17. The situation that stays in is revealed.

[Other Examples]
The present invention has the above-described embodiment as one of the best modes, but the following configurations can be taken. First, the embodiment shown in FIGS. 6 (a-1) to 6 (a-2) shows the state of the notch end face when the ring stopper upper flange 15 has a relatively thin thickness. In this case, Although the guide inclined surface 152f is formed, it is not formed in a state inclined in front view. Further, FIG. 6B-1 to FIG. 6B-2 show another embodiment of the guide flange notch 151, and the guide flange notch 151 does not necessarily incline the notch end surface 152. This is an embodiment that does not need to be performed. That is, it may be simply formed in a direction perpendicular to the direction in which the ring stopper upper flange 15 is formed, that is, in the vertical direction. As can be seen from the fact that this embodiment is possible, the present invention does not necessarily require the guide flange notch portion 151 having the inclined notch end face 152, but the guide flange notch portion 151 is essential. On the other hand, the guide barbing non-installing portion 255 is provided on the end ring 25 side, so that the removal guide inclination posture for removal can be sufficiently revealed with respect to the end ring 25. Thus, the end ring 25 can be easily taken out.

  Furthermore, the embodiment shown in FIG. 7 is another embodiment of the indicator 3 and is another embodiment of the indicator 3R having a concave shape. That is, a part of the ring stop lower flange 16 is cut out to form the container side indicator 31R, while the end ring 25 is also cut out of a part thereof to form the end ring side indicator 32R. A start state, that is, a removal start fixed point setting state is obtained. According to this configuration, an operation start state for detaching the end ring 25 can be easily obtained with the touch of the fingertip, and even a person with visual impairment can easily perform the operation, and a so-called universal design compatible product can be provided. In particular, it is desirable that the end ring side indicator 32R has a concave shape in a front view and an overhanging shape (a bowl shape) in a cross-sectional view. In doing so, the fingertip that captures the removal start fixed point setting state of the indicator 3R is hung so that the end ring 25 can be easily shifted upward, and the removal operation is immediately started while the end ring 25 is removed and is in a guiding inclined posture. be able to. As for the indicator 3, although the above-described embodiments are preferable, it is possible to guide only the removal start fixed point setting state, and to push the end ring 25 upward at the start of removal, it is also possible to set another position.

  Further, the embodiment shown in FIG. 8 is a display for informing consumers of the removal structure of the end ring 25 of the present invention. By displaying such a display, the collection of sorted resources is more actively promoted. is there. Further, in the above description, the bottle body 1 is exemplified by the most popular so-called PET bottle, but the present invention can be applied to other materials such as a conventional glass container.

DESCRIPTION OF SYMBOLS 1 Bottle main body 10 Wrap 11 Body part 12 Cover closure part 13 Spout 14 Male thread 15 Ring stop upper flange 151 Guide flange notch part 152 Notch end face 152e Guide edge 152f Guide inclined surface 152t Top edge part 152tL Top edge line 153 Notched end face 16 Ring retaining lower flange 17 Ring receiving part 18 Ring unplugging part 2 Bottle cap 21 Cap body 22 Female thread 23 Weakened part 25 End ring 25A Ring body 250 Barb body 251 Barb flap 252 Free end 252L Free end line 254 Barb flap Inter-gap 255 Guide bar non-installation part 3 Indicator 31 Container side indicator 32 End ring side indicator 3R Concave type indicator 31R Concave type container side indicator 32R Concave type End ring side indicator 4 Operation instruction display P Guidance start point W1 Notch dimension W2 Non-replacement dimension Z Effective induction zone W3 Effective induction zone dimension WF Deflection flap width dimension WG Deflection flap gap dimension WP Deflection flap pitch dimension f1 Induction start flap f2 to fn Subsequent barb flap C container D arrow (indicating removal operation direction)
θS Initial deviation setting angle θM Opening margin angle

Claims (10)

In the structure attached to the bottle cap attached to the lid closing part of the bottle body, detached from the cap body when opening the lid, and removing the end ring remaining in the ring storage part in the bottle body from the bottle body,
The ring storage portion is formed by a substantial recess between the ring-stop upper flange and the ring-stop lower flange, and the ring-stop upper flange is opened at the guide flange cutout portion. although it is, in the ring matches side has a shape that does not protrude the collision force,
In addition, the end ring includes a retaining body that prevents contact with an upper flange for retaining the ring on the inner peripheral side of the end ring, and the retaining body does not form a covering body in a certain range. It is configured to be divided by a non-setting part for guiding
On the other hand, the ring-stop upper flange forms a guide flange notch in a part thereof,
By setting the removal start fixed point setting state in which the guide bar non-installing portion and the guide flange notch portion are arranged adjacent to each other, the size of the guide bar non-installing portion arranged adjacent to each other, An effective induction zone in the range consisting of the sum of the notch dimensions of the guide flange notch is secured, and in this effective induction zone, the restriction by the upper ring flange on the end ring is released in part, and the end ring An end ring removal structure for a plastic bottle cap, characterized in that a removal guiding inclined posture is revealed at the start of the removal.   The pair of cutout end surfaces forming the guide flange cutout portion, at least the cutout end surfaces on the operation direction side constitute a guide inclined surface toward the removal operation direction side. Item 1. A resin bottle cap end ring removing structure according to Item 1.   The end ring removing structure for a resin bottle cap according to claim 2, wherein the removing operation direction is opposite to the loosening direction of the bottle cap.   4. The end ring removal structure for a resin bottle cap according to claim 1, wherein the effective induction zone is set in a range of 50 ° to 100 ° in a circumferential range of the bottle lid closing portion.   The size of the non-cutting portion which is the size of the guiding barbed non-cutting portion is set to be the same as or shorter than the size of the notch portion which is the size of the guiding flange cutout portion. The end ring removal structure of the resin bottle cap according to claim 1, 2, 3, or 4.   6. The resin bottle according to claim 1, wherein an indicator for causing a removal start fixed point setting state to appear is formed between the end ring and the bottle body. Cap end ring removal structure.   The indicator is formed by cutting out a part of a ring stopper lower flange provided below the ring stopper upper flange to form an alignment recess, and also forming an alignment recess corresponding to the end ring. The end ring removing structure for a resin bottle cap according to claim 6.   When the bottle cap is initially closed at the time of manufacture of the bottle cap, the stop position of the end ring integrated with the bottle cap at the time of initial closure is shifted from the container side indicator to the loose side of the bottle cap. The end ring removing structure for a resin bottle cap according to claim 1, 2, 3, 4, 5, 6 or 7.   A container comprising the resin bottle cap end ring removing structure according to any one of claims 1 to 8.   The container according to claim 9, wherein the container is provided with an instruction for removing the end ring.

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