JP6057848B2 - Unplug cap - Google Patents

Description

  The present invention relates to a stopper cap that is attached to a mouth of a container and includes an opening mechanism, and more particularly to a stopper cap that is opened by screwing a cap body into an inner stopper that seals the inside of the container.

  As an unplugging cap that is opened by screwing operation, an inside plug that seals the inside of the container is fitted to the mouth of the container, and it is screwed to the container main body and screwed to a separating part that forms a planned opening portion of the inside plug. 2. Description of the Related Art Conventionally, a cap is known in which a sleeve having a blade-like portion is provided on a cap, and an opening is formed by cutting off a separating portion from an inner plug by rotating the overcap (see, for example, Patent Document 1).

Special reprint WO2007 / 126062

However, in the cap described in Patent Document 1, in order to improve the usability of the user, the blade-like portion at the lower end of the sleeve must be “abutted or approached” to the thin score defining the separating portion. When assembling the cap to the container, it was difficult to stabilize the tightening position of the screw of the overcap, and workability was poor.
Moreover, in order to maintain the unopened state and prevent mischief and the like, another process such as covering with a shrink and fixing is necessary.
In addition, the cap may be inadvertently opened due to an impact when the container is dropped during transportation or in the market.

Patent Document 1 proposes a stopper provided at the lower end of the overcap and disposed close to the container body. However, the stopper is intended to prevent accidental opening when not in use. Yes, it does not regulate the tightening position of the overcap when assembling the cap.
In addition, the container body where the stopper is "close" has an inclined surface, and there is a large variation in the shape and the error with the mounting position of the cap body. Therefore, the stopper restricts the tightening position of the overcap. Therefore, it could not be used.

  An object of the present invention is to solve the above-mentioned problems, and by accurately regulating the tightening position of the cap body with respect to the inner plug that seals the container, the assembly work to the container is facilitated, and inadvertent opening is performed. It is an object of the present invention to provide a stopper cap that can prevent and maintain an unopened state until use, and can prevent mischief and the like by visually confirming the opened state.

  In order to solve the above-described problems, the present invention provides, as an unplugging cap, an inner plug that is attached to the mouth of a container, a cap body that is screwed into the inner plug and has a spout, and a spout that is fitted to the cap body. The inner cap includes an annular base wall, a fitting cylinder portion formed of an inner cylinder suspended from the inner peripheral side of the annular base wall and an outer cylinder suspended from the outer peripheral side, and an annular base It consists of a vertical tube wall part standing on the top of the wall and forming a screw on the outer peripheral surface, and a partition wall that is connected to the inner periphery of the inner cylinder or the vertical tube wall part and seals the inside of the container. An annular upper wall that opens the spout, a cutting ring that is suspended from the annular upper wall and can be inserted into the inner periphery of the vertical wall of the inner plug and has a blade at the tip, and is suspended from the annular upper wall to the inner periphery A sealing member comprising a side peripheral wall formed with a female screw that is threadedly engaged with a male screw of the vertical cylindrical wall portion, and a sealing member that is detachably connected to the side peripheral wall. A spacer ring part disposed at the lower end of the side peripheral wall and abutting against the annular base wall of the inner plug; and a sealing plate that is connected to the spacer ring part and engages with the upper lid to maintain the closed state. The structure characterized by having is adopted.

  As a specific embodiment of the stopper cap, the upper part of the spacer ring part is formed with a thin connecting piece detachably connected to the lower end part of the side peripheral wall, and the upper part formed with a small gap from the lower end surface of the side peripheral wall. Protrusions are provided at a plurality of locations in the circumferential direction, and a separable thin-walled tear portion having a notch groove formed in the vertical direction is provided at one circumferential direction of the spacer ring portion adjacent to the connecting portion of the sealing plate. In addition, at the lower end portion of the side peripheral wall, at least one lower protrusion that protrudes downward is provided adjacent to the upper protrusion of the spacer ring portion, and the upper protrusion is adjacent to the tightening direction side of the lower protrusion. A configuration characterized in that it is arranged, or at least one engagement recess that fits with a slight play on an engagement protrusion provided on the upper portion of the spacer ring portion. Configuration Adopted to.

  As a further specific embodiment of the stopper cap, the lower end of the spacer ring portion is provided with water drain grooves having a predetermined height cut in the radial direction at a plurality of locations in the circumferential direction, and The partition is formed with a thinned weakened portion that defines a planned opening that is broken by the cutting ring, and the cutting edges of the cutting ring face each other in the radial direction. The bottom end and the top end to be inclined, and the cutting edge near the top end is arranged slightly inside the thinned portion in plan view, or The lower end of the cutting ring is provided with a blade portion provided over a predetermined range from the lowermost end portion toward the uppermost end portion toward the female screw releasing direction, and at least a lower end that is higher than the uppermost end portion of the blade portion and does not form a blade. From the folded part Ri, the circumferential inclination of the cutting edge of the blade section, to adopt a configuration, wherein it is set larger than the lead angle of the external thread and the internal thread.

  As a further specific embodiment of the stopper cap, from the axial position at which the cutting ring starts to cut the partition wall, the shaft that terminates cutting by a restricting portion that restricts screwing of the cap body and prevents further lowering after starting cutting The distance descending to the directional position is smaller than the pitch of the screw between the inner plug and the cap body, and a structure in which a predetermined range of uncut portion is provided in the partition wall, and the cap body is screwed after the start of cutting. The regulating part to be regulated is composed of the top surface of the upper end of the inner plug and the lower surface of the annular upper wall of the cap body, and the upper lid is connected to the cap body via a hinge. A configuration is adopted in which a restricting portion that restricts screwing of the cap body is set so that the uncut portion is formed on the hinge side.

  As a further specific embodiment of the stopper cap, on the hinge side of the thinned portion of the partition wall, a thick rib is provided at a circumferential position closer to the tightening direction of the female screw than the center of the hinge, Moreover, the structure characterized by providing the buildup part in the site | part adjacent to the thin weakening part of the circumferential direction range substantially corresponding to the uncut part is employ | adopted for the opening part of a partition.

  As a further specific embodiment of the stopper cap, the sealing plate is connected to the outer peripheral surface of the spacer ring portion, rises along the side peripheral wall, and is provided with a hook-like engaging portion at the upper portion, and the engaging portion is formed as an upper lid. The structure is characterized in that the closed state is maintained by engaging with a knob portion provided on the opposite side of the hinge, and also provided on the inner periphery of the outer cylinder of the inner plug and engaged with the mouth of the container A vertical thin portion with a groove cut in the vertical direction is formed at one circumferential direction of the reduced diameter protrusion, and the vertical thin portion is cut from the outer cylinder outer periphery in the circumferential direction above the reduced diameter protrusion. A belt-like portion that is continuous with the horizontal thin portion formed by the groove and formed at least half a circumference below the horizontal thin portion 16 starting from the vertical thin portion is formed by the vertical thin portion and the horizontal thin portion. The structure is characterized by being separable from To.

The stopper cap according to the present invention includes a spacer ring portion in which a sealing member that is separably connected to the side peripheral wall of the cap body is disposed at the lower end portion of the side peripheral wall and abuts against the annular base wall of the inner plug, and the spacer ring portion When the cap body is assembled to the inner plug, the spacer ring regulates the tightening position of the cap body. In addition, it is only necessary to tighten until the lower end of the spacer ring part comes into contact with the upper surface of the annular base wall of the inner plug, and even if the blade part of the cutting ring must be tightened to a position close to the partition wall, it may be opened by mistake. The tightening position can be obtained stably so as not to occur.
In addition, since it cannot be opened unless the sealing member is removed, it is possible to easily check the opening state visually, so that it is possible to prevent opening due to mischief or the like.
Further, even when the container falls and the stopper cap receives an impact, the cap ring can be prevented from being lowered by the spacer ring portion, and inadvertent opening can be prevented.

It is a cross-sectional side view which shows the set state (unused state) which assembled | attached the stopper cap of 1st Example to the container main body. It is the front view which showed the inside stopper of the stopper cap of 1st Example by the semi-sectional view. (A) is the side view which showed the inner cap of the stopper cap of 1st Example with the half cross-sectional view, (b) is the bottom view of the same stopper. It is a figure which shows the cap main body of the stopper cap of 1st Example, (a) is a top view, (b) is a side view. It is a bottom view of the cap main body of the stopper cap of 1st Example. (A) is the front view which showed the cap main body of the stopper cap of 1st Example with the semi-sectional view, (b) is JJ sectional drawing in Fig. (A). It is a cross-sectional side view which shows the use condition of the stopper cap of 1st Example. It is a cross-sectional side view which shows the set state (unused state) of the stopper cap of 2nd Example. It is a figure which shows the inside stopper of the stopper cap of 2nd Example, (a) is a top view, (b) is a front half sectional view. It is a figure which shows the cap main body of the stopper cap of 2nd Example, (a) is a top view, (b) is a cross-sectional side view. It is a figure which shows the cap main body of the stopper cap of 2nd Example, (a) is a bottom view, (b) is a X arrow view of the cutting ring lower end part in TT cross section, (c) is TT cross section. It is a Y arrow line view of the cutting ring lower end part. It is the bottom view which abbreviate | omitted a part of the stopper cap which removed the sealing member of 2nd Example, (a) is a set state, (b) removes a spacer ring part, and a blade part is in the position which contact | abuts to a partition. Indicates the lowered state. It is a figure which shows the use condition of the stopper cap of 2nd Example, (a) is a cross-sectional side view, (b) is a bottom view.

  Next, the stopper cap of this invention is demonstrated with reference to drawings which showed the Example.

  1 to 7, A is an inner stopper, B is a cap body, C is an upper lid connected to the cap body A via a hinge D, E is a container body, and F is a sealing member connected to the cap body B. It is.

As shown in FIG. 1, an engagement protrusion 2 is provided on the outer peripheral surface of the mouth portion 1 of the container body E, and a neck ring 3 is provided below the engagement protrusion 2.
An inner stopper A is fitted into the mouth portion 1 of the container body E by a fitting cylinder portion 6 that is suspended from an annular base wall 5 disposed on the container top surface 4.

As shown in FIGS. 1 to 3, the inner plug A is suspended from an annular base wall 5 that forms a ring-shaped plane, an inner cylinder 7 that is suspended from the inner periphery of the annular base wall 5, and an outer periphery. The fitting cylinder part 6 comprising the outer cylinder 8, the standing cylinder wall part 10 which is provided on the upper part of the annular base wall 5 and has a screw 9 formed on the outer peripheral surface, and the standing cylinder continuous with the inner peripheral surface of the inner cylinder 7 The partition wall 11 is provided on the inner peripheral surface of the cylindrical wall portion 10.
The partition wall 11 seals the inside of the container from the outside. The partition wall 11 is formed with a thinned weakened portion 13 that defines a planned opening portion 12 that is broken and opened when the container is used. ing.

The lower end of the outer tube 8 of the inner plug A is provided with a reduced diameter protrusion 15 that protrudes in an annular shape on the inner peripheral side and engages with the engagement protrusion 2 of the container body E. Is separated from the container main body E and disposed, a separation structure for releasing the mouth portion 1 from engagement by the reduced diameter protrusion 15 is provided.
In the present embodiment, as a separation structure provided in the outer cylinder 8, a lateral groove is notched in the circumferential direction from the outer peripheral side at a position above the reduced diameter protrusion 15, and a separable horizontal thin portion 16 is formed over a predetermined arc range. In addition, a separable vertical thin portion 17 that is continuous with the horizontal thin portion 16 is provided at one place in the circumferential direction.

In the vertical thin portion 17, a cut groove is formed in the longitudinal direction in the reduced diameter protrusion 15, and a belt-like portion 18 formed at least half a circumference below the horizontal thin portion 16 starting from the vertical thin portion 17 is formed in the outer cylinder 8. It is separable from.
On the outer peripheral surface of the outer cylinder 8, a recess 20 is formed extending in the circumferential direction from a portion where the vertical thin portion 17 is formed, and the concave portion 20 is formed to be thin enough to be separable, It is provided so as to be connected to the lateral groove forming the lateral thin portion 16.

The concave portion 20 is provided with a grip portion 22 having a gap 21 between the belt-shaped portion 18 and the concave portion 20 along the outer peripheral surface of the outer cylinder 8 from the end on the vertical thin portion 17 side. A separable connecting portion 23 connected to the recess 20 is provided at a predetermined portion of the grip portion 22 so as not to be inadvertently peeled off.
An outer cylinder base 24 that is not separated from the fitting cylinder part 6 is formed in the other end side of the belt-like part 18, that is, in a predetermined circumferential range between the terminal end and the same starting end of the horizontal thin part 16.

  As shown in FIGS. 4 to 6, the cap body B has an annular upper wall 30 that erects a pour tube 31 on the inner peripheral edge and opens a spout s, and a tip that is suspended from the inner peripheral edge of the annular upper wall 30. A cutting ring 33 provided with a blade portion 32, a side peripheral wall 35 which is suspended from the outer peripheral edge of the annular upper wall 30 and has a female screw 34 which is threadedly engaged with the male screw 9 of the vertical cylindrical wall portion 10 on the inner periphery, A sealing member F is provided on the peripheral wall 35 so as to be separable.

The cutting edge of the blade part 32 of the cutting ring 33 is inclined such that the lowermost end part 36 and the uppermost end part 37 face each other in the radial direction, that is, face each other at a position of 180 ° across the center. A surface is formed.
The cutting edge of the blade portion 32 substantially coincides with the circular thinned weakened portion 13 in plan view. However, as shown in FIG. 5, the predetermined range near the uppermost end portion 37 is larger than that of the thinned weakened portion 13 in plan view. As shown in FIG. 1, the blade edge of the pressing blade portion 32a is slightly cut at an acute angle portion and cut off from the lowermost end portion 36 side. It has become difficult.
The circumferential angle of the inclined blade edge of the blade portion 32 is set to be smaller than the lead angle of the male screw 9 and the female screw 34 so that the uncut portion 58 is formed in the thinned weakened portion 13 by the folding blade portion 32a. It has become.

The upper outer peripheral surface of the cutting ring 33 has a slightly larger outer diameter than the blade portion 32 and forms a seal portion that is closely fitted to the inner periphery of the vertical tube wall portion 10 of the inner plug A.
Further, a seal protrusion 25 is provided on the lower surface of the annular upper wall 30, and in a use state of the container in which the partition wall 11 is cut, the seal portion is formed in contact with the top surface 26 of the vertical tube wall portion 10, and It functions as a restricting portion that restricts the position so that the cap body B is not screwed in more than a predetermined amount.
As the restricting portion that prevents the cap body B from which the sealing member F has been removed from being screwed in more than a predetermined amount, the seal protrusion 25 is not necessarily required, and the lower surface of the annular upper wall 30 may be in contact with the top surface 26. In addition to the contact between the lower surface of the annular upper wall 30 and the top surface 26, it is provided at other sites such as the contact between the lower end of the side peripheral wall 35 from which the sealing member F is separated and the upper surface of the annular base wall 5. May be.

At the upper part of the annular upper wall 30, an annular lid engaging portion 38 that locks the upper lid C outside the pouring cylinder 31 is erected, and a hinge that connects the upper lid C continuously to the outer peripheral upper end of the side circumferential wall 35. D is provided.
A spacer ring portion 42 of the sealing member F is continuously connected to the lower end portion of the side peripheral wall 35 through separable thin connecting pieces 41 provided at six locations in the circumferential direction, and the spacer ring portion 42 is an unused container. In the state, it contacts the upper surface of the annular base wall 5 of the inner plug A and plays the role of regulating the tightening position of the cap body B.
On the outer peripheral surface of the spacer ring portion 42, a sealing plate 43 that engages with the upper lid C and maintains the closed state is provided on the opposite side of the hinge D.

As shown in detail in FIG. 6, the upper portion of the spacer ring portion 42 is opposed to the lower end surface of the side peripheral wall 35 with a small gap in order to prevent the cap body B from being lowered due to tightening or impact. Upper projections 44 are provided at six locations in the circumferential direction.
At the lower end of the side peripheral wall 35, lower projections 39 projecting downward adjacent to the upper projection 44 are provided at two locations facing each other in the radial direction, and the spacer ring portion 42 has the upper projection 44 adjacent to the lower projection 39. It is connected to the side peripheral wall 35 so as to be arranged on the tightening direction side.

Further, at the lower end of the spacer ring portion 42, a drain groove 45 having a predetermined height is provided at eight locations in the circumferential direction, and shower water or the like when sterilizing and cooling the container is used for the inner periphery of the spacer ring. It can be discharged so as not to stay on the side.
In addition, the number and position of the location where the upper protrusion 44 and the drainage groove 45 are disposed are not limited to the present embodiment, and can be provided at appropriate multiple locations. Moreover, the lower protrusion 39 should just be provided in at least one place, and the number and arrangement | positioning can be determined suitably.

On the outer periphery of the spacer ring portion 42, a thin tear portion 46 that can be separated by forming a notch groove in the vertical direction is provided in one circumferential direction adjacent to the continuous portion of the sealing plate 43, and a container is used. Sometimes the tearing portion 46 can be broken to remove the sealing portion b.
The sealing plate 43 is connected to the outer peripheral surface of the spacer ring portion 42, protrudes outward, rises along the side peripheral wall 35, and is provided with a hook-like engagement portion 47 at the top.
The sealing plate 43 is provided with a connecting column portion 48 that connects the vicinity of the middle to the side peripheral wall 35 so that the tearing portion 46 is not broken by inadvertently falling, and fingers are placed near the upper center. A recessed step 49 is provided so that it can be easily hung.

The upper lid C is connected to the hinge D at a predetermined location on the outer peripheral wall 52 that is suspended from the periphery of the top wall 51, and is connected to the cap body B so as to be rotatable.
A diameter-reducing engagement portion 53 that can be engaged with the lid engagement portion 38 is annularly provided at the lower end portion of the inner periphery of the outer peripheral wall 52, and the outer peripheral wall is disposed on the inner periphery above the diameter-reducing engagement portion 53. Vertical ribs 54 are provided for reinforcement.
A knob portion 55 is provided at the outer peripheral lower end portion of the outer peripheral wall 52 on the side opposite to the hinge D, and a protrusion engaging with a hook-like engagement portion 47 of the sealing plate 43 is provided on the upper surface near the tip portion of the knob portion 55. Article 56 is provided.
A sealing cylinder 57 is suspended from the back surface of the top wall 51 and is fitted into the extraction cylinder 31 when the lid is closed to seal the outlet s.

In this embodiment, the upper lid is a hinge cap that is connected to the cap body with a hinge. However, it is not always necessary to use such a hinge cap. A cap is also acceptable.
Further, in this embodiment, the thinned weakened portion 13 is provided in the partition wall 11, but the thinned weakened portion 13 may not be provided as long as it can be cut or folded by the cutting ring 33.

Next, with respect to the usage and effects of the present embodiment, see FIG. 1 showing an unused set state in which a stopper cap is assembled to the container body, and FIG. 7 showing the usage state of the container after the partition wall 11 has been cut. While explaining.
In order to attach the stopper cap of the present invention to the container body E, first, after filling the contents, the fitting cylinder part 6 of the inner stopper A is fitted into the mouth part 1 and plugged, and the container body E is attached to the container body E. Installing.
Next, the female screw 34 of the cap body B is screwed into the male screw 9 of the inner plug A, and is tightened until the lower end of the spacer ring portion 42 of the sealing member F is in contact with the upper surface of the annular base wall 5 of the inner plug A. Thus, a set state in which the attachment of the stopper cap to the container body E is completed.

At this time, since the lower protrusion 39 at the lower end of the side peripheral wall 35 is adjacent to the upper protrusion 44 of the spacer ring portion 42, it is ensured that the spacer ring portion 42 rotates integrally with the cap body B, and the thin connecting piece 41 is not broken, and it is only necessary to tighten until the lower end of the spacer ring portion 42 comes into contact with the upper surface of the annular base wall 5 of the inner plug A. Therefore, the blade portion 32 has a tightening position close to the partition wall 11. It can be obtained stably.
Further, even when the container falls and the stopper cap receives an impact, the upper protrusion 44 of the spacer ring portion 42 prevents the side peripheral wall 35 from descending, and also prevents the cutting ring 33 from descending. 32 does not inadvertently break and open the partition wall 11.
And since it cannot open unless the sealing member F is removed, since an opening condition can be confirmed visually, opening by mischief etc. can be prevented.

In order to sterilize the contents, the container may be cooled by shower water or the like after the stopper cap is attached when the stopper cap is attached to the container body E after the contents are heated and filled.
In such a case, shower water may enter the inside of the spacer ring part 42, but the lower end of the spacer ring part 42 is provided with water drain grooves 45 cut out in a plurality of circumferential directions in the radial direction. Therefore, shower water or the like does not stay on the inner periphery of the spacer ring portion 42, and the container can be kept clean.

In order to open and use the stopper cap, a finger is placed on the recessed step portion 49 of the sealing plate 43 of the sealing member F and pulled forward, and the hook-like engaging portion 47 is projected on the protrusion 56 of the knob portion 55 of the upper lid C. The connection column part 48 is broken when it is released from the engagement with it and tilted forward.
When the sealing plate b away from the side peripheral wall 35 is pulled forward, the thin connecting portion 41 in contact with the spacer ring portion 42 is broken and the tearing portion 46 is broken, and the cap body B is freed. When the sealing plate b is further pulled in the circumferential direction, all of the thin connecting portions 41 at the eight circumferential directions are broken, and the sealing member F can be completely separated and removed from the cap body B.

When the sealing member F is removed, there is a gap between the lower end of the side peripheral wall 35 of the cap main body B and the upper surface of the annular base wall 5 of the inner plug A. When tightened, the lowermost end portion 36 of the blade portion 32 of the cutting ring 33 is lowered to a position where it comes into contact with the thinned weakened portion 13 of the partition wall 11 to cut the thinned weakened portion 13.
When the cap main body B is tightened, the cutting ring 33 rotates and descends, and the cutting portion of the thinned weakened portion 13 advances in the circumferential direction, but the folding blade portion 32a near the uppermost end portion 37 of the blade portion 32 When it comes to the cutting part, the cutting edge of the folding blade part 32a is arranged slightly inside the circular thinned weakened part 13 and the acute angle part of the tip is cut and difficult to cut, so the thinned weakened A slight uncut portion 58 is formed in the portion 13, and the scheduled course portion 12 is not separated from the partition wall 11 and is bent downward.

Then, as shown in FIG. 7, when the seal protrusion 25 is brought into contact with the top surface 26 of the vertical tube wall portion 10 and further lowered from the cap body B, the blade portion 32 is completely separated from the partition wall. 11, the opening planned portion 12 is folded downward, the opening is secured by the cutting ring 33, and the unsealed state is maintained.
It is preferable that the planned opening portion 12 be folded down to the hinge C side so as not to get in the way when the contents are poured out.
For this purpose, the positional relationship between the sealing ridge 25 and the top surface 26 is set so that the sealing ridge 25 abuts against the top surface 26 of the vertical tube wall 10 when the folding blade portion 32a comes to the hinge C side. It is necessary to set according to the rotation amount of the screw 34.
Further, in order for the uncut portion 58 to be formed in the thinned weakened portion 13, the thinned weakened portion 13 must be cut with a rotation amount smaller than one pitch of the internal thread 34. The circumferential angle needs to be set smaller than the lead angle of the internal thread 34.

Note that the planned opening portion 12 may be completely separated depending on the contents. In this case, it is not necessary to provide the folding blade portion 32 a on the blade portion 32.
Thereafter, in order to use the container, a finger is pulled up to the knob portion 55 of the upper lid C, the engagement between the lid engaging portion 38 and the reduced diameter engaging portion 53 is released, and the upper lid B is rotated. When the container is tilted, the contents are guided and poured out by tilting the container.

After the container is used, the stopper cap can be separated from the container body E and discarded by the separation structure provided in the inner stopper A.
When the gripping portion 22 of the outer tube 8 of the inner plug A is gripped with a finger and pulled outward, the coupling portion 23 is broken and the gripping portion 22 is pulled out of the recess 20 and further pulled. As the vertical thin portion 17 breaks, the horizontal thin portion 16 begins to break, and the strip 18 begins to separate from the outer cylinder 8.
Since the horizontal thin portion 16 is formed at least half a circle, preferably about 3/4 round from the vertical thin portion 17 as a starting point, when the breaking of the horizontal thin portion 16 proceeds in the circumferential direction and reaches the end, the outer cylinder 8 Since only the outer cylinder base 24 is engaged with the mouth 1 and is connected to the inner cylinder 7, if the gripping part 22 and the belt-like part 18 are pulled upward, the reduced diameter protrusion 15 and the mouth The engagement with the part 1 is released, and the stopper cap can be separated from the container body E and discarded.

Next, a second embodiment in which the configuration of the cutting ring or the like is changed will be described with reference to FIGS.
In the following, the same components as those in the first embodiment will be denoted by the suffix “b” and the difference will be mainly described.

As shown in FIG. 11, the lower end portion of the cutting ring 33 b of the present embodiment includes a blade portion 60 and a folded portion 61 in which no blade is formed with the TQT line as a boundary. The lowermost end 62 is formed at the front end of the female screw 34b in the tightening direction, and the uppermost end 63 is formed on the release direction side of the female screw 34b.
The folded portion 61 is the same height as the uppermost end portion 63 of the blade portion 60 and forms a substantially flat lower surface having a slight R on the inner and outer circumferences.
Note that the height of the lower end of the folding part 61 need only be higher than at least the uppermost end part 63 of the blade part 60, and is not necessarily the same height as the uppermost end part 63.

The blade portion 60 has a blade edge that is inclined from the lowermost end portion 62 toward the uppermost end portion 63. The circumferential inclination angle of the blade edge is larger than the lead angle of the female screw 34b so as to form the uncut portion 58b. Have a large angle.
Here, the circumferential inclination angle of the cutting edge of the blade part 60 refers to an inclination that connects the cutting edges from the lowermost end part 62 to the uppermost end part 63, and is not limited to the case of the cutting edge gradually inclined as in the present embodiment.

The circumferential position of the cutting edge of the lowermost end 62 is disposed at a position that is closer to the release direction side of the female screw 34b by an angle β from the central position on the hinge C side. As will be described in detail later, this angle β is set so as to determine the arc range of the uncut portion 58b when the uncut portion 58b is formed on the hinge side, and is set to about 20 ° in this embodiment. ing.
In addition, the central angle α indicating the arc range of the blade portion 60 is about 160 ° in the present embodiment, but it is possible to secure an arc range in which the folding portion 61 can fold the uncut portion 58b. If possible, an appropriate angle can be set.

As shown in FIGS. 8 and 9, a built-up portion 65 is formed in a predetermined arc range on the upper surface of the planned opening portion 12b of the partition wall 11b adjacent to the thinned weakened portion 13b.
The build-up portion 65 is formed in an arc range substantially corresponding to the arc range in which the uncut portion 58 b is formed, and an inclined surface 66 is formed at least in a portion adjacent to the thinned weakened portion 13.
In the present embodiment, an inclined surface 66 is formed continuously to the inclined surface provided on the entire circumference in order to form the thinned weakened portion 13b in the partition wall 11b.
Further, the thinned weakened portion 13b in the vicinity of the end portion of the built-up portion 65 on the tightening direction side of the female screw 34b is provided with a thick rib 67 that is thicker than the thinned weakened portion 13b in other places.

As shown in FIG. 10 (b), an engaging recess 71 is fitted at the lower end portion of the side peripheral wall 35b of the cap body B with a slight play to the engaging protrusion 70 provided on the upper portion of the spacer ring portion 42b. Is provided.
The engagement protrusion 70 and the engagement recess 71 are provided at two locations in this embodiment, but may be provided at at least one location.
The engagement recess 71 into which the engagement protrusion 70 is fitted corresponds to the upper protrusion 44 disposed on the tightening direction side of the lower protrusion 39 in the first embodiment, and the spacer ring portion 42b is integrated with the cap body B. Guaranteed to rotate.

The thin connecting piece 41b and the other upper projection 44b provided on the upper portion of the spacer ring portion 42b are not different from the first embodiment.
Further, in this embodiment, the lid engaging portion 38b is provided to protrude outward from the peripheral edge portion of the annular upper wall 30b, and the connecting post portion 48 as in the first embodiment is not provided on the sealing plate 43b. .
Other configurations are the same as those of the first embodiment.

Next, with respect to the usage and effects of the present embodiment, FIG. 12 showing a state in which the cap body Bb is rotated and screwed from the stopper cap in the set state, and FIG. 13 showing the state in which the cutting of the partition wall 11b has been completed. The description will be given with reference.
FIG. 12 (a) is a bottom view showing a positional relationship between the stopper cap immediately after removing the sealing member Fb, that is, the inner stopper Ab and the cap body Bb in the set state, and the lowermost end portion 62 of the blade portion 60 is in the circumferential direction. Thus, it is on the Q-N1 line on the release side of the internal thread 34b from the thick rib 67, and its height is slightly above the thin weakened portion 13b.
In this figure, in order to make the positional relationship with the hinge Db easy to understand, the upper cover Cb, which is partially omitted, is shown in an opened state.

When the cap main body Bb is rotated and screwed from the state of FIG. 12A (in the figure, the arrow M is the rotation direction of the cap main body Bb), the lowermost end 62 and the thinned portion 13b of the blade 60 in the set state. Is set to be small, the lowermost end 62 comes into contact with the thinned weakened portion 13b by a slight angle of rotation.
In FIG. 12B, the circumferential position when the lowermost end portion 62 of the blade portion 60 starts to hit the thinned weakened portion 13b is indicated by the Q-N2 line. On the liberation side.

Since the stopper cap is made of a member having a slight elasticity such as a synthetic resin, even if the blade portion 60 starts to hit the thinned weakened portion 13b, the thinned weakened portion 13b is not deformed and is not cut immediately, and the lowermost end 62 further increases as it rotates. Going down.
Further, the lowermost end 62 comes into contact with the thick rib 67 by a slight rotation. However, since the thick rib 67 is thick, it is not cut here, and the descending amount is gradually increased. The lowermost end portion 62 starts cutting at the thinned weakened portion 13 b on the QG line immediately after passing through the thick rib 67.

Thereafter, as the cap main body Bb rotates, cutting of the thinned portion 13b proceeds, but since the inclination angle in the circumferential direction of the blade edge of the blade portion 60 is larger than the lead angle of the female screw 34b, the thick rib 67 is cut. It will never be done.
When the rotation proceeds to a position where the lowermost end portion 62 approaches the arc range where the build-up portion 65 is located, the folded portion 61 of the cutting ring 33b that has been greatly lowered protrudes downward from the height position of the thinned weakened portion 13b. And comes to contact the inclined surface 66 of the built-up portion 65.

When the cap body Bb further rotates and the seal protrusion 25b contacts the top surface 26 of the inner plug Ab, the cap body Bb is prevented from further descending.
At this time, as shown in FIG. 13, the lowermost end portion 62 of the blade portion 60 has advanced to a position on the Q-N3 line that slightly bites into the arc range of the build-up portion 65. The center position in the circumferential direction matches the center position of the hinge Db.
In order to make the center position in the circumferential direction of the built-up portion 65 coincide with the center position of the hinge Db, the distance between the seal protrusion 25b and the top surface 26 in the set state is set in accordance with the amount of rotation of the female thread 34b. Good.
Therefore, in this state, the circumferential center line of the built-up portion 65 and the Q-N3 line indicating the circumferential position of the lowermost end portion 62 form an angle β.

In the cutting completion state shown in FIG. 13, between the cutting completion position Q-N3 of the lowermost end 62 of the blade part 60 and the cutting start position QG (end position in the screw tightening direction of the thick rib 67). The arc region becomes the uncut portion 58b, and the folding portion 61 folds down while pressing the inclined surface 66 of the built-up portion 65 to curve the planned opening portion 12b of the partition wall 11b along the inner peripheral surface of the inner cylinder 7b. ing.
Thus, since the cutting start position and the cutting completion position are set corresponding to the position of the hinge Db, the planned opening portion 12b is continuously provided by the uncut portion 58b, and the inner periphery of the inner cylinder 7b is formed on the hinge Db side. By following the surface, when the contents are poured out, the planned opening portion 12b can be smoothly poured out without obstruction.
Other functions and effects are the same as those of the first embodiment.

  The stopper cap of the present invention can be opened simply by screwing the cap body, and is easier to open than the opening means such as a pull ring. Therefore, the opening means for the container for storing the contents requiring high sealing until use. It can be widely used as a cap having a cap, and can be suitably used as an opening cap for containers for elderly people and children who have weak fingers.

A Ab Inner plug B Bb Cap body C Cb Upper lid D Db Hinge E Eb Container body F Fb Sealing member Q Axis s sb Spout 1 1b Mouth 2 2b Engagement ridge 3 3b Neck ring 4 4b Container top 5 5b Annular base wall 6 6b Fitting cylinder part 7 7b Inner cylinder 8 8b Outer cylinder 9 9b Male thread 10 10b Vertical cylinder wall part 11 11b Partition wall 12 12b Planned opening part 13 13b Thinning weakened part 15 15b Reduced diameter protrusion 16 16b Thin side wall Part 17 17b Vertical thin part 18 18b Band-like part 20 20b Recess 21 21b Gap 22 22b Grip part 23 23b Coupling part 24 24b Outer cylinder base 25 25b Seal projection 26 26b Top surface 30 30b Annular upper wall 31 31b Extraction cylinder 32 Blade Part 32a Pressing blade part 33 33b Cutting ring 34 34b Female thread 35 35b Side peripheral wall 36 Bottom end part 37 Top end part 38 3 8b Lid engaging part 39 Lower protrusion 41 41b Thin connecting piece 42 42b Spacer ring part 43 43b Sealing plate 44 44b Upper protrusion 45 45b Drain groove 46 46b Tear part 47 47b Hook-like engaging part 48 Connecting column part 49 49b Recessed Step part 51 51b Top wall 52 52b Outer peripheral wall 53 53b Reduced diameter engaging part 54 54b Vertical rib 55 55b Knob part 56 56b Projection 57 57b Sealing cylinder 58 58b Uncut part 60 Blade part 61 Pushing part 62 Bottom end part 63 Uppermost end portion 65 Overlay portion 66 Inclined surface 67 Thick rib 70 Engagement protrusion 71 Engagement recess

Claims (15)

An inner stopper to be attached to the mouth of the container, a cap body screwed into the inner stopper and having a spout, and an upper lid that is fitted to the cap body and closes the spout,
The inner plug is erected on the annular base wall, a fitting cylinder portion comprising an inner cylinder suspended from the inner peripheral side of the annular base wall and an outer cylinder suspended from the outer peripheral side, and an upper portion of the annular base wall. A vertical cylinder wall part having a thread formed on the outer peripheral surface, and a partition wall that is connected to the inner periphery of the inner cylinder or the vertical cylinder wall part and seals the inside of the container,
The cap body has an annular upper wall that opens the spout, a cutting ring that is suspended from the annular upper wall and can be inserted into the inner periphery of the vertical wall of the inner plug, and has a blade at the tip, and is suspended from the annular upper wall. A side peripheral wall formed with a female screw that is screwed to the internal thread of the vertical cylindrical wall portion on the inner periphery, and a sealing member that is detachably connected to the side peripheral wall,
The sealing member is disposed at the lower end portion of the side peripheral wall and is in contact with the annular base wall of the inner plug. The sealing plate is connected to the spacer ring portion and engages with the upper lid to maintain the closed state. An unplug cap characterized by comprising.   At the upper part of the spacer ring part, a thin connecting piece that is separably connected to the lower end part of the side peripheral wall, and upper protrusions formed with a small gap from the lower end surface of the side peripheral wall are provided at a plurality of positions in the circumferential direction. 2. A thin, separable tearing portion having a notch groove formed in the vertical direction is provided at one circumferential direction of the spacer ring portion adjacent to the continuous portion of the sealing plate. Unplug cap.   At least one lower protrusion that protrudes downward adjacent to the upper protrusion of the spacer ring portion is provided at the lower end of the side peripheral wall, and the upper protrusion is disposed adjacent to the tightening direction side of the lower protrusion. The stopper cap according to claim 2, wherein   3. The stopper according to claim 2, wherein at least one engaging recess is provided at a lower end portion of the side peripheral wall to be fitted with an engagement protrusion provided at an upper portion of the spacer ring portion with a slight play. cap.   The stopper cap according to any one of claims 1 to 4, wherein a drainage groove having a predetermined height is provided at a lower end of the spacer ring portion at a plurality of locations in the circumferential direction.   The stopper cap according to any one of claims 1 to 5, wherein the partition wall is formed with a thinned weakened portion that defines a planned opening portion that is broken and opened by a cutting ring.   The cutting edge of the cutting portion of the cutting ring is inclined with the lowermost end and the uppermost end facing each other in the radial direction, and the cutting edge near the uppermost end is slightly inward of the thinned weakened portion in plan view. The stopper cap according to claim 6, wherein the stopper cap is disposed on the stopper.   The lower end of the cutting ring is provided with a blade portion provided over a predetermined range from the lowermost end portion toward the uppermost end portion toward the female screw releasing direction, and at least a lower end that is higher than the uppermost end portion of the blade portion and does not form a blade. The plug opening according to any one of claims 1 to 6, characterized in that the inclination in the circumferential direction of the cutting edge of the blade portion is set to be larger than the lead angle of the male screw and the female screw. cap.   The distance from the axial position where the cutting ring starts to cut the partition wall to the axial position where the cutting is finished by the restricting portion which restricts screwing of the cap body and prevents further lowering after starting cutting is The stopper cap according to any one of claims 1 to 7, wherein an uncut portion of a predetermined range is provided in the partition wall, which is smaller than the pitch of the screw of the cap body.   10. The unplugging cap according to claim 9, wherein the restricting portion for restricting screwing of the cap body after the start of cutting is constituted by a top surface of the upper end of the inner plug and a lower surface of the annular upper wall of the cap body.   The upper lid is connected to the cap body via a hinge, and a restricting portion for restricting screwing of the cap body is set so that an uncut portion is formed on the hinge side. The stopper cap described.   12. The cap according to claim 11, wherein a thick rib is provided on the hinge side of the thinned portion of the partition wall at a circumferential position closer to the tightening direction of the female screw than the center of the hinge.   13. The overlaid portion of the partition wall is provided with a built-up portion at a portion adjacent to the thinned weakened portion in the circumferential direction range that substantially coincides with the uncut portion. Unplug cap.   The sealing plate is connected to the outer peripheral surface of the spacer ring portion, rises along the side peripheral wall, is provided with a hook-like engaging portion at the upper portion, and the engaging portion is provided on the side opposite to the hinge of the upper lid. The stopper cap according to any one of claims 11 to 13, wherein the cap is engaged to maintain a closed state.   A vertical thin portion with a groove cut in the vertical direction is formed at one circumferential direction of the reduced diameter protrusion that is provided on the inner periphery of the outer tube of the inner plug and engages with the mouth portion of the container. Is continuous with the horizontal thin portion formed by the groove cut out from the outer periphery of the outer cylinder in the circumferential direction above the reduced diameter ridge, and at least a half or more below the horizontal thin portion 16 starting from the vertical thin portion The stopper cap according to any one of claims 1 to 14, wherein the strip-shaped portion formed over the upper cylindrical portion and the horizontal thin portion is separable from the outer cylinder.

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