JP2019038558A - Breakable spout - Google Patents

Abstract

To provide a breakable spout capable of preventing falling off of a breaking part from a cover when opening, with a simple structure, without causing force application to the breaking part except in use, and causing no lowering of sealability.SOLUTION: A breakable spout 100 has a spout body 110 and a cover 130. The cover 130, in a state of covering the spout body 110, covering a breaking part 117 and fixed, is formed in a shape of not coming into contact with the breaking part 117, and the breaking part 117 has an engaging hole 119 extending in the circumferential direction around a flow passage 116. In an inner peripheral part of the cover 130, an insertion arm 134 is formed which is inserted into the engaging hole 119 when rotated around the flow passage 116. The breaking part 117 has a swelling part 121 protrusively formed outward from a position different from the operation arm 118 of an outer peripheral surface of the breaking part 117.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a break-up spout closed by a break-up portion in which the tip of a flow path is integrally formed, and particularly to a break-up spout in which the spout body and the break-up portion are protected by a cover that covers the outer periphery of the spout body.

2. Description of the Related Art Conventionally, a break-up spout that includes a spout body that includes a tubular portion having a flow path that penetrates the center and has a flow passage closed by a break-away portion that is integrally formed at the distal end of the tubular portion.
In addition, in order to avoid directly touching the spout body from the hygiene side, a cover is provided to cover the outer periphery on the tip side of the cylindrical part of the spout body, and the cover removal operation and the detachment operation of the break-off portion are performed simultaneously. A break-up spout with improved user convenience is also known (see, for example, Patent Documents 1 and 2).

  However, the break-out spout known in the above-mentioned patent documents has a structure in which the cover (cap 12, cap 3) is fitted and fixed in the break-off portion (thread cutting projection 18, sealing member 15). For this reason, when the cover (cap 12, cap 3) is fitted, a force is applied to the breaker portion (screw cutting projection 18, sealing member 15), and the weakened portion (thin portion 24, thin portion 16) is damaged. There is a risk that the sealing performance may be impaired, and when an external force is applied to the cover (cap 12, cap 3) during transportation or storage, force is applied to the breaker portion (screw cutting projection 18, sealing member 15) and weakening. The parts (thin wall part 24, thin wall part 16) may be damaged and the sealing performance may be impaired.

Patent Document 3 also proposes a folding spout. The break-out spout includes a spout body (110) and a cover (160) that covers the spout body (110) from the distal end side. The spout body (110) includes a cylindrical part (120), and a cylindrical part (120). 120) has a breaker part (150) integrally formed from the tip of the weakened part (121) through the weakened part (121), and the engagement hole (152) of the operating arm (151) provided in the breaker part (150). , By rotating the cover (160) and inserting the insertion arm (163) provided on the cover (160), the breaker (150) is twisted and the weakened part (121) is broken to open it. Since the cover (160) is formed in a shape that does not come into contact with the breaker part (150) except when opened, when the cover (160) is fitted, transported, stored, etc. Even if external force is applied to the cover (160) 150) rather than force can take, it is possible to prevent the weakened portion (121) is impaired tightness damaged.
Furthermore, since the insertion arm (163) is engaged with the engagement hole (152), the cover (160) can hold the breaker part (150) even after the weakened part (121) is broken at the time of opening. Therefore, scattering of the tear-off part (150) at the time of opening can be prevented.

JP 2006-62752 A JP 2009-46184 A JP 2014-91572 A

  However, the folding spout known in Patent Document 3 still has room for improvement. That is, the opening operation was performed in a state where the positional relationship in the vertical direction between the insertion arm and the engagement hole was slightly shifted due to rattling due to a temporary impact or the like generated when the user's force was increased or decreased or the weakened portion was broken. At that time, there was a possibility that the insertion arm could come out of the engagement hole, and the breaker part could be detached from the cover.

  The present invention is to solve these problems, with a simple configuration, without any unexpected force applied to the folding part other than during use, and without a decrease in hermeticity due to damage or the like of the weakened part, It is an object of the present invention to provide a break-up spout that suppresses rattling at the time of opening and reliably prevents the break-off portion from falling off the cover.

  The break-out spout of the present invention includes a cylindrical portion having a flow path that penetrates the center, and a break-off portion that is integrally formed from the tip of the tubular portion via a weakening portion. A breakout spout comprising a spout body capable of closing a tip and a cover that covers an outer periphery of the tube portion of the spout body, wherein the cover is covered from the tip side of the spout body and is folded. The spout body is formed in a separate shape so as to cover and covers the distal end side of the spout body, and is formed in a shape that does not come into contact with the breaker part. A pair of operating arms extending in a direction orthogonal to the flow path, the operating arms having an engagement hole extending in a circumferential direction centering on the flow path, and an inner peripheral portion of the cover The engagement hole when the cover is rotated about the flow path. An insertion arm to be inserted is provided, and the breaker portion has a bulging portion that protrudes outward from a position different from the operation arm on the outer peripheral surface of the breaker portion, The problem is solved.

According to the break-up spout of the invention according to claim 1, since the cover is formed so as to be covered from the front end side of the spout body so as to include the break-off portion, the break-off portion is also provided during transport and storage. In addition, no force is directly applied to the weakened portion from the outside, and the weakened portion can be prevented from being damaged by an unintended external force.
The breaker portion has a pair of operating arms extending in a direction orthogonal to the flow path, the operating arms have engagement holes extending in the circumferential direction around the flow path, and the inner peripheral portion of the cover Is provided with an insertion arm that is inserted into the engagement hole when rotated about the flow path, so that the folding part is broken at the weakened part by the action of twisting and removing the cover during use. It is cut off and can be removed from the spout main body together with the cover, so that the disposal process becomes easy and the convenience is improved.

  Furthermore, since the folding part has a bulging part that protrudes outward from a position different from the operation arm on the outer peripheral surface of the folding part, during the operation of twisting and removing the cover during use, A part of the inner peripheral surface of the cover is brought into contact with the bulging portion, thereby suppressing rattling between the cover and the break-off portion, preventing unintentional disconnection of the insertion arm from the engagement hole, and ensuring that the cover is folded. The handle can be held by a cover.

  According to the configuration of the second aspect, since the bulging portion is formed to protrude above the engagement hole, the bulging portion is located above the insertion arm when the insertion arm is inserted into the engagement hole. Since the upper and lower sides of the insertion arm are sandwiched between the engagement hole and the bulging part, unintentional disconnection of the insertion arm from the engagement hole is suppressed, and the folding part is securely held by the cover and dropped. It can be made to leave without.

  According to the third aspect of the present invention, the inner surface of the engagement hole is provided with a locking protrusion that is formed to protrude from the inner surface of the engagement hole in the radial direction. Since the overpassing part formed in the radial direction to be engaged over the locking protrusion is provided, the overpassing part on the distal end side of the insertion arm is used for locking the engagement hole when the cover is twisted during use. By engaging over the protrusion, when the breaker is separated and removed together with the cover, the insertion arm does not come out of the engagement hole, and the separated breaker is not separated from the cover. Therefore, disposal processing becomes easy and convenience is improved.

According to the configuration of the fourth aspect, since the insertion arm is provided opposite to both sides of the engagement hole, even if the cover is twisted to the left or right during use, either of the opposite insertion arms is engaged. Since it is inserted into the joint hole, even if it is twisted to the left or right, when the folding part is separated and removed together with the cover, the folding part is not separated from the cover, and the convenience is further improved.
In addition, during the operation of twisting and removing the cover during use, the bulging part presses the upper part of the insertion arm that is not inserted into the engagement hole in an opposing positional relationship, so that the back and back of the cover and the breaker part are more reliably secured. In addition to preventing sticking, unintentional detachment of the insertion arm from the engagement hole can be suppressed, and the breaker can be held by the cover.

According to the structure of Claim 5, the enlarged diameter part is provided in the outer peripheral surface of the cylinder part below the weakening part of a spout main body, and the cover engagement engaged with the enlarged diameter part is provided in the inner peripheral surface of the cover. Since the joint is provided, and the cover is fixed by covering the tip side of the spout body by engaging the enlarged diameter part and the cover engaging part, no force is applied to the breaker part or weakening part, and weakening The part is prevented from being damaged, and the sealing performance is not impaired.
According to the configuration described in claim 6, a screw portion is provided on the outer peripheral surface of the lower portion of the cylindrical portion of the spout body, and at least a part of the screw portion has a chamfered portion that is chamfered in the vertical direction. Therefore, when the cover is rotated and the cover is detached from the spout body together with the breaker part, the cover can be easily removed without the inner peripheral surface of the cover contacting the screw part interfering with the cover. .

1 is a perspective view of a break-up spout 100 according to an embodiment of the present invention. The perspective view of the spout main body 110 which concerns on one Embodiment of this invention. The top view and front view of the spout main body 110 which concern on one Embodiment of this invention. The perspective view of the cover 130 which concerns on one Embodiment of this invention. The front view and bottom view of the cover 130 which concern on one Embodiment of this invention. The front half sectional view and side sectional drawing of the break-up spout 100 which concern on one Embodiment of this invention. The half sectional view which shows the removal procedure 1 of the folding part 117 of the folding spout 100 which concerns on one Embodiment of this invention, A-A 'sectional drawing, and B-B' sectional drawing. The A-A 'sectional view and B-B' sectional view which show separation procedure 2 of breaker part 117 of breaker spout 100 concerning one embodiment of the present invention. The half cross-sectional view, A-A 'cross-sectional view, and B-B' cross-sectional view when the cover 130 is rotated 90 degrees of the break-up spout 100 according to the embodiment of the present invention. The A-A 'sectional view and B-B' sectional view which show separation procedure 3 of breaker part 117 of breaker spout 100 concerning one embodiment of the present invention. The half cross-sectional view, A-A 'cross-sectional view, and B-B' cross-sectional view when the cover 130 is rotated 270 [deg.] Of the break-up spout 100 according to the embodiment of the present invention.

Below, the break-up spout 100 which concerns on one Embodiment of this invention is demonstrated based on drawing.
The break-up spout 100 is closed by a break-off portion 117 in which the tip of the flow path 116 is integrally formed, and as shown in FIGS. 1 and 7, a cylindrical portion 111 having a flow path 116 penetrating the center. A spout body 117 integrally formed through the weakened part 122 from the tip of the tube part 111, the spout body 110 capable of closing the tip of the flow path 116 by the breaker part 117, and the tube part of the spout body 110 And a cover 130 that covers the outer periphery of the front end side of 111.

As shown in FIGS. 2 and 3, a flange portion 114 is provided at the lower portion of the cylindrical portion 111. The upper surface of the flange portion 114 and the outer peripheral surface of the cylindrical portion 111 have an upward convex slope. Two convex portions 115 are disposed to face each other so as to sandwich the cylindrical portion 111 therebetween.
Further, two engaging projections 125 are formed on the lower outer peripheral surface of the cylindrical portion 111 above the convex portion 115 so as to project outward in the radial direction of the cylindrical portion 111, and are orthogonal to the line connecting the two convex portions 115. From the direction to face, so as to sandwich the cylinder portion 111.
The upper surface of the engagement protrusion 125 is inclined downward as it goes outward in the radial direction.

Further, on the outer peripheral surface of the cylindrical portion 111 below the weakened portion of the spout body, there are provided an enlarged diameter portion 112 and a screw portion 123 for connecting to an attachment member such as a tube during use. A portion located above the convex portion 115 is chamfered in the vertical direction by a chamfered portion 124 disposed so as to face the cylindrical portion 111 therebetween.
An attachment portion 113 that can be attached and welded to a container such as a pouch is connected below the flange portion 114.

The breaker 117 is provided with a pair of operating arms 118 extending in a direction orthogonal to the flow path 116, and the operating arms 118 have engagement holes 119 extending in the circumferential direction centering on the flow path 116. ing.
In addition, on the inner surface of the engagement hole 119, a locking projection 120 is provided extending vertically in the axial direction from the inner surface of the engagement hole 119 on the radially outer side.
Furthermore, two bulges that are formed to protrude radially outward in the direction orthogonal to the line connecting the pair of operating arms 118 on the outer peripheral surface of the breaker 117 above the engagement hole 119. The parts 121 are arranged to face each other.

As shown in FIGS. 4 and 5, the cover 130 has a cover top surface 131 having a peripheral edge formed by a pair of opposing long sides and a pair of opposing short sides, and is suspended from the peripheral part of the cover top surface 131. The cover 130 is further provided with a cover engaging portion 133, an insertion arm 134, an engagement window 136, and a notch 137.
The cover engaging portion 133 is provided on the inner peripheral surface of the skirt wall 132 on the long side portion side, and is configured to be engageable with the outer peripheral surface of the enlarged diameter portion 112 of the spout body 110.
Four insertion arms 134 are equally arranged on the inner peripheral surface upper part of the skirt wall 132 on the long side portion side, and each insertion arm 134 extends in the circumferential direction facing the adjacent insertion arm 134. In addition, a cover 130, which will be described later, is disposed so as to face both sides of the engagement hole 119 of the operating arm 118 in a state where a cover 130, which will be described later, is fixed so as to cover the distal end side of the spout body 110. .
Therefore, the insertion arm 134 is configured to be able to be inserted into the engagement hole 119 of the operation arm 118 when the cover 130 is turned to one side, and the insertion arm 134 is inserted into the engagement hole 119 on the distal end side of the insertion arm 134. In this case, a passover portion 135 is provided that protrudes outward in the radial direction and can be engaged over the locking protrusion 120.

The engagement window 136 is formed in a laterally long hole shape penetrating the side surface of the skirt wall 132 on the long side portion side, and is provided longer in the circumferential direction than the engagement protrusion 125.
The notch 137 is provided in the lower part of the skirt wall 132 on the long side part side, and the lower part is opened.
The notch 137 forms a slope that gradually rises from the center side of the skirt wall 132 on the long side portion toward the skirt wall 132 on the short side portion.

Next, the assembly of the break-up spout 100 will be described with reference to FIG.
In the break-out spout 100, the spout body 110 and the cover 130 are separately manufactured by injection molding or the like, and the cover 130 is covered from the front end side of the spout body 110, and a cover engaging portion 133 formed on the inner peripheral surface of the cover 130. Is engaged with the enlarged diameter portion 112 of the cylindrical portion 111, so that the cover 130 covers and fixes the tip end side of the spout body 110, and is assembled as the broken spout 100.

The cover 130 is formed in a shape that does not come into contact with the breaker 117 in a state of covering and fixing the front end side of the spout body 110. During this assembling operation, the inner peripheral surface of the cover 130 is separated from the breaker 117. Since there is no contact at all, no force is applied to the breaker 117 or the weakened portion 122, the weakened portion 122 is prevented from being damaged, and the sealing performance is not impaired.
Further, even if an external force is applied to the cover 130, only a force is directly applied to the cylinder portion 111 via the cover engaging portion 133, and no force is transmitted to the breaker portion 117 or the weakened portion 122, and the weakened portion is caused by an unintended external force. It is possible to reliably prevent the 122 from being damaged.

Furthermore, since the cover engaging portion 133 is engaged so as to tighten the enlarged diameter portion 112, the cover 130 can be prevented from being moved unexpectedly in the rotation direction.
At this time, the engagement window 136 and the engagement protrusion 125 are engaged with each other, thereby functioning as a retaining portion for the cover 130 from the spout body 110.

Next, a procedure for detaching the breaker 117 from the breaker spout 100 will be described with reference to FIGS.
For the sake of explanation, the BB ′ sectional view uses the outline of the cover 130 ignoring the engagement window 136 and the notch 137 of the cover 130.

First, as shown in FIG. 7, the cover 130 is put on the spout body 110 so as not to interfere with the breaker 117.
From this state, the cover 130 starts to rotate clockwise with respect to the spout body 110.
As shown in FIG. 8, when the cover 130 is gradually turned, one insertion arm 134 extending in the clockwise circumferential direction starts to be inserted into the engagement holes 119 of the pair of operation arms 118, respectively. When the insertion arm 134 is inserted into the engagement hole 119 until the overpass part 135 gets over the locking protrusion 120 by rotating it, the overpass part 135 is engaged with the locking protrusion 120 even if the cover 130 is reversely rotated. The insertion arm 134 does not come out of the engagement hole 119.

Further, the insertion arm 134 is also provided with the other insertion arm 134 extending in the counterclockwise circumferential direction, and the other insertion arm 134 moves below the bulging portion 121, so that the folding portion 117 is provided. It will be restricted from moving upward.
As a result, one insertion arm 134 and the other insertion arm 134 extend in the circumferential direction opposite to the adjacent insertion arm 134 and are arranged with each other, and the locking projection 120 and the overpass portion 135 are engaged. And the bulging portion 121 restricts upward movement, thereby suppressing the wobbling in the circumferential direction that occurs when the cover 130 rotates, and the engagement between the locking projection 120 and the overpass portion 135 is released. In addition, by holding the insertion arm 134, rattling can be prevented and unintentional dropping of the breaker 117 can be suppressed.

When the cover 130 is further rotated after the insertion arm 134 is inserted into the engagement hole 119, the operation arm 118 rotates together with the cover 130, and the weakened portion 122 is gradually twisted.
When the cover 130 is rotated by 35 °, the engagement window 136 is provided in a hole shape that is longer in the circumferential direction than the engagement protrusion 125, and at least one end in the circumferential direction of the engagement window 136 passes through the spout body 110 through the flow path 116. Since the engagement projection 125 is removed from the engagement window 136 as the cover 130 rotates, the spout body of the cover 130 is removed. Release prevention from is released.

At this time, the notch 137 starts to come into contact with the convex portion 115 as the cover 130 rotates, and receives a force in a direction in which the cover 130 is detached from the spout body 110, but the weakened portion 122 is not completely twisted off. Since the cover 130 engaged with the breaker 117 cannot be detached from the spout body 110, the lower part of the skirt wall 132 on the long side portion located below the engagement window 136 is rotated until the cover 130 rotates 90 °. As shown in FIG. 9, the convex portion 115 separated from the notch 137 comes into contact, and is gradually deformed so that the diameter is increased from the inner surface.
The shape of the cover 130 may be any shape as long as there is a portion that functions as the skirt wall 132 on the long side portion. For example, the peripheral portion of the cover top surface 131 may be a track shape, a rectangle shape, or a clear shape. It may be a perfect ellipse shape with no long or short side cuts.

As shown in FIG. 10, when the cover 130 is continuously rotated, the weakened portion 122 is further twisted, and eventually the weakened portion 122 is completely twisted off as shown in FIG. 117 is detached, and the flow path 116 is opened.
At this time, since the weakened portion 122 has already been twisted, the slope of the notch 137 functions as a cam when it comes into contact with the slope of the convex portion 115 again as the cover 130 rotates, and the engagement window 136 and The cover 130 is lifted along the slope of the convex portion 115 in a state in which the cover 130 is prevented from being detached from the spout body 110 by the engaging protrusion 125, and the enlarged diameter portion 112 and the cover engaging portion 133 are By releasing the engagement, it acts as an auxiliary to remove the cover 130 from the spout body 110.

In addition, since the one and the other insertion arms 134 are sandwiched between the operation arm 118 and the bulging portion 121, even after the cover 130 is detached, the folding portion 117 is securely held by the cover 130 without dropping. can do.
Further, a portion (a portion corresponding to the skirt wall 132 on the short side portion) located above the convex portion 115 of the screw portion 123 is chamfered in the vertical direction by a chamfered portion 124 disposed so as to sandwich the cylindrical portion 111. When the cover 130 is detached from the spout body 110 at a position rotated by 270 °, the cover 130 interferes with the screw part 123 because the closest part of the cover 130 to the spout body 110 is located on the chamfered part 124 side. It can detach | leave from the spout main body 110, without doing.

  The insertion arms 134 are equally arranged in a four-circular shape on the inner peripheral surface of the skirt wall 132 on the long side, and each insertion arm 134 is in the circumferential direction opposite to the adjacent insertion arm 134. Therefore, even when the cover 130 is rotated counterclockwise, the weakened portion 122 can be twisted off and the cover 130 can be detached from the spout body 110 together with the breaker portion 117.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment, A various design change can be made without deviating from this invention described in the claim. Is possible.

In the above-described embodiment, the four insertion arms are equally arranged on the inner peripheral surface upper part of the skirt wall on the long side portion side, and each insertion arm has a circumference facing the adjacent insertion arm. The number of insertion arms is not limited to this. For example, only one insertion arm may be provided, and two insertion arms are symmetrically 1 It may be provided one by one.
Further, in the above-described embodiment, the locking protrusion formed on the inner surface of the engagement hole so as to protrude radially inward from the radially inner side surface of the engagement hole extends in the axial direction. However, the position where the locking protrusion is formed is not limited to this. For example, the locking protrusion is formed radially outward from the inner side surface of the engagement hole in the radial direction. May be provided.

Further, in the above-described embodiment, the bulging portion has been described as being formed to protrude radially outward from the outer peripheral surface above the engagement hole of the operating arm. It is not limited, For example, you may protrude and form in the radial direction outward from the outer peripheral surface below the engagement hole of a folding part.
Further, in the embodiment described above, the insertion arms are equally arranged in four circumferential shapes on the inner peripheral surface of the skirt wall on the long side portion, and each insertion arm is arranged in a circumferential direction facing the adjacent insertion arm. It is arranged so as to extend, and when the insertion arm is inserted into the engagement hole, the insertion arm that is not inserted into the engagement hole moves below the bulging part to restrict the folding part from moving upward However, the method of restricting the upward movement of the breaker is not limited to this, and for example, a protrusion that protrudes inward from the inner peripheral surface of the cover is provided separately from the insertion arm, and the protrusion May move the lower part of the bulging part so that the protruding part is brought into contact with the bulging part to restrict the folding part from moving upward.

In the above-described embodiment, the convex portion and the cutout portion functioning as the cam are described. However, the configuration of the cam is not limited to this, and for example, the convex portion without the cutout portion is provided. And the lower end of the skirt wall may function as a cam. A cam is formed by providing a concave portion that extends obliquely upward on the outer peripheral surface of the cylindrical portion and engaging with a convex portion that is bulged from the inner peripheral surface of the skirt wall. You may make it function, and there may be no convex part and notch part which function as a cam.
Further, in the above-described embodiment, the description has been given on the assumption that the engagement window and the engagement projection functioning as the retaining portion are provided, but the configuration of the retaining portion is not limited to this, for example, the outer periphery of the cylindrical portion The surface and the inner peripheral surface of the cover may be provided with wedge-shaped protrusions provided symmetrically with each other in the vertical direction, and may be engaged with each other to function as a retaining portion. There may be no engaging protrusion.

Further, in the above-described embodiment, the portion located above the convex portion of the screw portion has been described as being chamfered in the vertical direction by the chamfered portion disposed so as to sandwich the cylindrical portion. For example, the chamfered portion may not be provided.
In the above-described embodiment, the cover engaging portion is engaged with the diameter-expanded portion of the cylindrical portion so that the cover covers and fixes the tip end side of the spout body. For example, a cover engaging portion that engages with the screw portion may be provided instead of the enlarged diameter portion, and the vertical direction engages with the outer peripheral surface of the cylindrical portion including the screw portion and the enlarged diameter portion. A cover engaging portion formed in a long rib shape may be provided.

DESCRIPTION OF SYMBOLS 100 ... Break-out spout 110 ... Spout main body 111 ... Tube part 112 ... Expanded diameter part 113 ... Mounting part 114 ... Flange part 115 ... Convex part 116 ... Flow path 117 ... Folding part 118 ... Operation arm 119 ... Engagement hole 120 ... Locking projection 121 ... Swelling part 122 ... Weakening part 123 ... Screw part 124 ... Chamfered portion 125 ... engaging protrusion 130 ... cover 131 ... cover top surface 132 ... skirt wall 133 ... cover engaging portion 134 ... insertion arm 135 ... overpass part 136 ...・ Engagement window 137 ... Notch

Claims (6)

A spout body having a cylindrical portion having a flow path penetrating through the center and a break-up portion integrally formed from the tip of the cylindrical portion via a weakening portion, and capable of closing the tip of the flow path by the break-off portion; A break-out spout provided with a cover that covers the outer periphery of the tip side of the cylindrical portion of the spout body,
The cover is formed as a separate body so as to cover the spout body from the tip side and cover the breaker,
In a state where the tip end side of the spout body is covered and fixed, it is formed in a shape that does not come into contact with the breaker part,
The folding part of the spout body has a pair of operating arms extending in a direction perpendicular to the flow path;
The operating arm has an engagement hole extending in a circumferential direction around the flow path;
The inner periphery of the cover is provided with an insertion arm that is inserted into the engagement hole when the cover is rotated around the flow path.
The break-up spout, wherein the break-up portion has a bulging portion that protrudes outward from a position different from the operation arm on the outer peripheral surface of the break-off portion.   The break-up spout according to claim 1, wherein the bulging portion is formed to protrude upward from the engagement hole. On the inner surface of the engagement hole, there is provided a locking projection formed in a radial direction protruding from the inner surface of the engagement hole,
3. The folding device according to claim 1, wherein the insertion arm is provided with an overpass portion formed in a radially projecting manner so as to climb over and engage with the locking projection at the time of insertion. Take spout.   The break-up spout according to any one of claims 1 to 3, wherein the insertion arm is provided opposite to both sides of the engagement hole. An enlarged diameter portion is provided on the outer peripheral surface of the cylindrical portion below the weakened portion of the spout body,
A cover engaging portion that engages with the enlarged diameter portion is provided on the inner peripheral surface of the cover,
5. The cover according to claim 1, wherein the cover is fixed so as to cover a distal end side of the spout body by the engagement of the enlarged diameter portion and the cover engaging portion. Broken spout.   The thread part is provided in the outer peripheral surface of the cylinder part lower part of the said spout main body, At least one part of the said thread part has a chamfering part chamfered in the up-down direction. The break-out spout according to any one of claims 1 to 5.

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