JP2020158199A - Break-off spout - Google Patents

Abstract

A snap-off spout that has a simple structure, does not require a large amount of force when fitting a cover to a spout body or when unsealing, and can reliably fit a cover to a spout body at a correct position and can be opened safely. to provide A break-off spout (100) comprising a spout body (110) and a cover (130), wherein an engaging portion (122) provided on the spout body (110) and an engaged portion (135) provided on a skirt wall (132) of the cover (130). is configured as a retaining portion that engages the cover 130 and the spout body 110 to prevent them from coming off and that can release the engagement between the cover 130 and the spout body 110 when the cover 130 is rotated; A guided portion 136 provided on the spout body 132 is guided by a guide portion 123 provided on the spout body 110, and the guide portion 123 is divided into a plurality of upper and lower portions. [Selection drawing] Fig. 1

Description

The present invention relates to a folding spout closed by a folding portion in which the tip of a flow path is integrally formed, and more particularly to a folding spout in which the spout body and the folding portion are protected by a cover covering the outer circumference of the spout body.

Conventionally, a folding spout having a tubular portion having a flow path penetrating the center and having a spout main body in which the tip of the flow path is closed by a folding portion integrally formed at the tip of the tubular portion is well known.
In addition, in order to avoid touching the spout body directly from a hygienic point of view, a cover is provided to cover the outer periphery of the tip side of the cylinder part of the spout body, and the cover removal operation and the folding part disconnection operation are performed at the same time. A folding spout with improved user convenience is also known (see, for example, Patent Documents 1 and 2).

However, since the cut-off spouts known in Patent Documents 1 and 2 have a substantially circular shape in the circumferential direction of the cover, they are positioned at each other when the cover and the spout body are fitted in the same direction. The relationship could not be fixed, and there was a risk that the mating would be displaced from the correct position depending on the amount of force applied.

Further, there is also known a break-off spout that is provided with a guide for positioning the spout body and the cover and can be easily centered when the cover is attached to the spout body (see, for example, Patent Document 3 and the like).
The break-out spout (spout 1 with a protective cap) described in Patent Document 3 is integrally formed from a tubular portion having a flow path penetrating the center and from the tip of the tubular portion via a weakened portion (thin-walled portion 8). A spout body (pouring port 10) having a folding part (closing member 3) and capable of closing the tip of the flow path by the folding part (closing member 3), and a tube tip of the spout body (pouring port 10). A cover (protective cap 20) that covers the outer periphery of the side is provided, and the cover (protective cap 20) has a cover top surface and a skirt wall that hangs down from the peripheral edge portion of the cover top surface.

Further, a guided portion (vertical guide 23) extending in the vertical direction is provided on the inner surface side of the skirt wall, and the guided portion (vertical guide 23) is located on the outer surface side of the tubular portion of the spout body (pouring port 10). It is configured to be slidable between the provided guide portions (guide member 13 and guide member 14) extending in the vertical direction, and the guided portion (vertical guide 23) is connected to the guide portion (guide member 13 and guide member 14). By fitting the cover (protective cap 20) to the spout body (pouring port 10) so as to pass between them, the cover (protective cap 20) and the spout body (pouring port 10) are substantially circular and in the circumferential direction. Even if it is difficult to confirm the relative position of the cover (protective cap 20), the cover (protective cap 20) can be reliably fitted to the spout body (pouring port 10) at the correct position.

Japanese Unexamined Patent Publication No. 2006-62752 JP-A-2009-46184 Japanese Unexamined Patent Publication No. 2008-30759

However, there is still room for improvement in the cut-off spout known in the above patent documents and the like. That is, in the cut-off spout known in Patent Document 3 and the like, since the guide portion is arranged long in the vertical direction, the contact area between the guide portion and the guided portion is large, so that the cover is fitted to the spout body. There was a risk that a large force would be required.
Further, when the break-off spout is opened, if the contact area between the guide portion and the guided portion is large, the rotational torque for rotating the cover so that the guided portion gets over the guide portion also increases, so that the break-off spout is opened. There was a risk that it would be difficult to do.
In addition, at the moment when a large rotational torque is applied and the guided portion gets over the guide portion, an unnecessarily large force may be applied to the cover to damage the cover and the spout body, and the hand may not be stable and break off. There was a risk that the contents would be ejected at the same time as the spout was opened.

The present invention solves these problems, and has a simple configuration, does not require a large force when fitting the cover to the spout body or opening the cover, and securely fits the cover into the spout body in the correct position. The purpose is to provide a tear-off spout that can be combined and opened safely.

The folding spout of the present invention includes a tubular portion having a flow path penetrating the center and a folding portion integrally formed from the tip of the tubular portion via a weakened portion, and the folding portion allows the flow path to be formed. A folding spout including a spout body capable of closing the tip and a cover covering the outer periphery of the tubular portion of the spout body on the tip side, and the cover is covered from the tip side of the spout body to cover the folding. A cover top surface that is formed as a separate body so as to cover including the handle portion and has a peripheral edge formed by a pair of long side portions facing each other and a pair of short side portions facing each other, and a skirt wall hanging from the peripheral edge portion of the cover top surface. The cover is fixed so as to cover the tip end side of the spout body, and is formed in a shape that does not come into contact with the cut-off portion. The spout body has an engaging portion and the engaging portion. The skirt wall has a guide portion arranged on the upper portion, and the skirt wall has an engaged portion and a guided portion arranged on the upper portion of the engaged portion, and the engaging portion and the engaged portion are engaged. By engaging with each other, the cover and the spout body are prevented from coming off and engaged with each other, and when the cover is rotated about the flow path, the cover and the spout body are brought into contact with each other. It is configured as a retaining portion that can be disengaged, and the guide portion is divided into a plurality of upper and lower portions to solve the above-mentioned problem.

According to the folding spout of the invention according to claim 1, since the cover is formed so as to cover the spout body from the tip end side and include the folding portion, the folding portion is also formed during transportation and storage. Since no external force is directly applied to the weakened portion, it is possible to prevent the weakened portion from being damaged by an unintended external force.
Further, the engaging portion provided on the spout body and the engaged portion provided on the skirt wall engage with each other to prevent the cover and the spout body from coming off and engage with each other, and the cover flows through the flow path. Since it is configured as a retaining part that can disengage the engagement between the cover and the spout body when it is rotated around the center, it is possible to prevent the cover from coming off from the spout body before use (before rotation). On the other hand, when in use, the cover and the spout body can be easily released from coming off by simply rotating the cover relative to the spout body.
Further, the spout body has a guide portion arranged above the engaging portion, and a guided portion guided by the guide portion is provided above the engaged portion, so that the guided portion can be provided. By aligning the cover and the spout body so that they are guided by the guide, the guided portion and the guide can engage the cover and the spout body while fixing them in the correct relative positions. ..
Further, since the guide portion is divided into a plurality of upper and lower parts, the contact area between the guided portion and the guide portion is reduced when the cover and the spout body are engaged with each other to prevent them from coming off, and the cover can be used with the spout body during use. When rotating relative to each other, the resistance generated from the contact portion between the guided portion and the guide portion can be reduced, and the break-off spout can be easily opened with a small force.

According to the configuration according to claim 2, since the length of the guided portion is a length that always contacts one of the guide portions divided into upper and lower parts, the guided portion is before the start of the retaining engagement. By keeping the cover in constant contact with the guide portion, the retaining engagement can be started with the orientation of the cover and the spout body fixed at the correct position.
According to the configuration according to claim 3, the guided portion and the lower guided portion are in contact with the guide portion arranged above the engaging portion at least at the start of the retaining engagement of the retaining portion. Therefore, the retaining engagement can be performed while fixing the orientation of the cover and the spout body at the correct position.

According to the configuration according to claim 4, since the upper portion of the guide portion is formed so as to gradually approach the guided portion side as it goes downward, when the guide portion and the guided portion start contact with each other. , Even if there is a slight deviation between the cover and the spout body, the cover and the spout body will not come off and engage while correcting each other's orientation so that the guided part is guided more reliably to the guide part. Can be made to.
According to the configuration according to claim 5, the guide unit includes a first guide unit and a second guide unit located below the first guide unit, and the upper portion of the second guide unit faces downward. Since it is formed so as to gradually approach the guided portion side according to the above, the distance between the first guide portion and the second guide portion is long, and the guided portion that has passed through the first guide portion heads toward the second guide portion. Even if a slight inclination occurs, the cover and the spout body can be prevented from coming off and engaged with each other while correcting the orientations of the guided portions so that the guided portions are surely guided to the second guide portion.

According to the configuration according to claim 6, a lower guide portion is provided below the engaging portion of the spout body, and the lower guide portion and the lower guide portion are prevented from coming off. Since they are in contact with each other when the engagement is completed, the guide portion and the guided portion are provided above and below the engaged portion and the engaged portion, respectively, even after the engagement between the cover and the spout body is completed. By contacting the lower guide portion and the lower guided portion, the orientation of the cover in the retaining engaged state and the spout body can be reliably maintained at the correct position.
According to the configuration according to claim 7, the guided portion is formed in a rib shape extending in the vertical direction, and the guide portion is arranged so as to sandwich the guided portion from the side, and is a pair extending in the vertical direction. Since it is formed in a rib shape, when the cover and the spout body are prevented from coming off and engaged with each other, the guided portion is restricted from moving in the circumferential direction by the guide portion, so that the cover and the spout body can be reliably connected to each other. It can be engaged with a retainer at the correct position.

According to the configuration according to claim 8, the retaining portion includes an engaging window provided as an engaged portion on the skirt wall on the long side portion side and an engaging protrusion provided as an engaging portion on the tubular portion. The engagement window is provided longer than the engagement protrusion in the circumferential direction, and at least one end of the engagement window in the circumferential direction is formed by the engagement protrusion when the cover is rotated about the flow path. Since it reaches the outside of the drawn circle, it has an extremely simple structure, and when the cylinder and the cover are rotated relatively, the engaging protrusions do not get caught on the edge of the engaging window and come out of the engaging window. It can be detached and the retaining can be released.

The front view of the folding spout 100 which concerns on one Embodiment of this invention. Top view and front view of the spout main body 110 according to the embodiment of the present invention. A side sectional view of the spout body 110 according to the embodiment of the present invention. The front view and the bottom view of the cover 130 which concerns on one Embodiment of this invention. A side sectional view of a cover 130 according to an embodiment of the present invention. FIG. 5 is a side sectional view showing procedure 1 for fitting the cover 130 according to the embodiment of the present invention to the spout main body 110. A side sectional view showing a procedure 2 for fitting the cover 130 according to the embodiment of the present invention to the spout body 110. A side sectional view showing a procedure 3 for fitting the cover 130 according to the embodiment of the present invention to the spout body 110. A side sectional view showing a procedure 4 in which the cover 130 according to the embodiment of the present invention is fitted to the spout main body 110.

The cut-off spout 100 according to the embodiment of the present invention will be described below with reference to the drawings.
The break spout 100 is closed by a break portion 116 in which the tip of the flow path 115 is integrally formed, and as shown in FIGS. 1 and 9, a tubular portion 111 having a flow path 115 penetrating the center. And a spout main body 110 that is integrally formed from the tip of the tubular portion 111 via a weakening portion 121, and the tip of the flow path 115 can be closed by the folding portion 116, and the tubular portion of the spout main body 110. A cover 130 that covers the tip end side of the 111 is provided.

As shown in FIGS. 2 and 3, a flange portion 114 is provided below the tubular portion 111, and a flange portion 114 is provided between the weakened portion 121 and the flange portion 114 of the tubular portion 111 from above to downward. A tapered surface 127 is formed to expand the diameter of the tubular portion 111.
Further, on the lower outer peripheral surface of the tubular portion 111 above the flange portion 114, two engaging projections 122 formed so as to protrude outward in the radial direction of the tubular portion 111 are arranged so as to sandwich the tubular portion 111. The upper surface of the engaging projection 122 is inclined downward as it goes outward in the radial direction.

Further, the tubular portion 111 is provided with a pair of rib-shaped guide portions 123 extending outward in the radial direction and extending in the vertical direction so as to sandwich the engaging projection 122 which is an engaging portion. Is composed of a first guide portion 124 and a second guide portion 125, and the first guide portion 124 and the second guide portion 125 are arranged so as to be arranged in the vertical direction at predetermined intervals.
Further, below the second guide portion 125, a lower guide portion 126 is formed continuously with the second guide portion 125.

The first guide portion 124 is formed so that the upper end portion is formed on the tapered surface 127 and the first guide portion 124 gradually protrudes outward in the radial direction as it goes downward.

A connecting portion 112 for connecting to a mounting member such as a tube during use is provided on the outer peripheral surface of the tubular portion 111 below the weakened portion 121 of the spout main body 110.
A mounting portion 113 that can be mounted and welded to a container such as a pouch is connected below the flange portion 114.

The folding portion 116 is provided with a pair of operating arms 117 extending in a direction orthogonal to the flow path 115, and the operating arms 117 have an engaging hole 118 extending in the circumferential direction about the flow path 115. ing.
Further, on the inner surface of the engaging hole 118, a locking projection 119 formed so as to protrude inward in the radial direction from the inner surface on the outer side in the radial direction of the engaging hole 118 is provided in the vertical direction.
Further, on the outer peripheral surface of the folding portion 116 above the engagement hole 118, two bulges formed so as to protrude outward in the radial direction in a direction orthogonal to the line connecting the pair of operating arms 117. The portions 120 are arranged so as 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 long side portions facing each other and a pair of short side portions facing each other, and a cover top surface 131 hanging from the peripheral edge portion of the cover top surface 131. The skirt wall 132 is provided, and the cover 130 is further provided with an insertion arm 133, an engaging window 135 which is an engaged portion, a guided portion 136, and a lower guided portion 137. ..

The insertion arms 133 are evenly arranged in four circumferential shapes on the upper part of the inner peripheral surface of the skirt wall 132 on the long side side, and each insertion arm 133 extends in the circumferential direction facing the adjacent insertion arm 133. The cover 130 is arranged so as to face both sides of the engaging holes 118 of the operating arm 117 in a state where the cover 130 covers the tip end side of the spout body 110 and is fixed.
Therefore, the insertion arm 133 is configured to be insertable into the engagement hole 118 of the operation arm 117 when the cover 130 is turned in one direction, and the insertion arm 133 is inserted into the engagement hole 118 on the tip side of the insertion arm 133. At that time, a passing portion 134 is provided which is formed so as to project outward in the radial direction so as to be able to get over the locking protrusion 119 and engage with the lock protrusion 119.

The engaging window 135 is formed in a horizontally long hole shape penetrating the side surface of the skirt wall 132 on the long side side, and is provided longer than the engaging projection 122 in the circumferential direction.
The guided portion 136 is formed in a rib shape extending inward in the radial direction and extending in the vertical direction from the inner surface on the long side portion side of the cover 130, and the lower guided portion 137 sandwiches the engaging window 135. Therefore, it is formed in a rib shape extending in the vertical direction below the guided portion 136.
Further, the lower end surface of the lower guided portion 137 forms a lower inclined surface 138 that gradually protrudes inward in the radial direction toward the upper side.

Next, the assembly of the cut-off spout 100 will be described with reference to FIGS. 6 to 9.
In the folding spout 100, the spout body 110 and the cover 130 are separately manufactured by injection molding or the like, the cover 130 is covered from the tip side of the spout body 110, and the engaging protrusion 122 which is the engaging portion is the engaged portion. By engaging with a certain engaging window 135 and functioning as a retaining portion, the cover 130 covers and fixes the tip end side of the spout body 110, and is assembled as a folding spout 100.

The procedure for assembling the cut-off spout 100 will be described in detail. First, as shown in FIG. 6, the cover 130 is covered from the tip side of the spout body 110, and the lower guided portion 137 is sandwiched between the first guide portions 124. Align and push in as shown.
As a result, the orientation of the spout body 110 and the cover 130 in the rotational direction is fixed at the correct position, and it is possible to prevent the folding portion 116 from excessively contacting the skirt wall 132 when the folding spout 100 is assembled.

Further, since the first guide portion 124 is formed so that the upper end portion is formed on the tapered surface 127 and gradually protrudes outward in the radial direction toward the lower side, the lower guided portion is guided. As the 137 enters between the first guide portions 124, the first guide portion 124 gradually approaches the lower guided portion 137 side, so that the lower guided portion 137 and the first guide portion 124 start to come into contact with each other. At that time, even if there is a slight deviation between the directions of the spout body 110 and the cover 130, the direction of the spout body 110 and the cover 130 so that the lower guided portion 137 is guided to the upper part of the first guide portion 124. Can be fixed.

When the cover 130 is further pushed in, as shown in FIG. 7, the lower guided portion 137 gets over the first guide portion 124 and begins to be pushed downward from the first guide portion 124.
At this time, the guided portion 136 starts contacting with the first guide portion 124 before the lower guided portion 137 completely separates from the first guide portion 124.
As a result, at least one of the guided portion 136 and the lower guided portion 137 is always in contact with the first guide portion 124, so that the orientation of the spout body 110 and the cover 130 is fixed at the correct position. Can be maintained.

The lower guided portion 137 that has left the first guide portion 124 comes into contact with the second guide portion 125 side.
At this time, since the first guide portion 124 and the guided portion 136 are in contact with each other and the orientations of the spout body 110 and the cover 130 are fixed at the correct positions, the lower guided portion 137 is surely the first. The guide is guided so as to be sandwiched between the two guide portions 125, and the state in which the directions of the spout body 110 and the cover 130 are not misaligned can be further maintained.

When the cover 130 is further pushed in, as shown in FIG. 8, the upper surface of the engaging projection 122 and the lower inclined surface 138 come into contact with the cover 130.
At this time, the upper surface of the engaging projection 122 is inclined downward as it goes outward in the radial direction, and the lower inclined surface 138 is inclined inward in the radial direction toward upward, so that a large force is applied. Without pushing the cover 130, the lower guided portion 137 can easily get over the engaging projection 122, and as shown in FIG. 9, the engaging projection 122 and the engaging window 135 are engaged with each other. The cover 130 can be prevented from coming off from the spout body 110.

Further, the lower side guided portion 137 that has passed over the engaging projection 122 is guided so as to be sandwiched between the lower side guide portion 126.
When the lower inclined surface 138 is formed so as to gradually expand in the circumferential direction of the cover 130 toward the upper side, the spout is more reliably performed when the lower guided portion 137 and the first guide portion 124 start contact with each other. The orientation of the main body 110 and the cover 130 can be corrected.

When opening the folding spout 100 in which the cover 130 is prevented from coming off and engaged with the spout body 110 during use, the cover 130 is rotated relative to the spout body 110 so that the insertion arm 133 can be operated in pairs. Each of them is inserted into the engagement hole 118 of the arm 117, the operating arm 117 rotates together with the cover 130, and the weakened portion 121 is twisted off.
Further, since the engaging window 135 is provided in a hole shape longer than the engaging projection 122 in the circumferential direction, the engaging projection 122 is pulled out from the engaging window 135 as the cover 130 rotates, so that the cover 130 The stopper from the spout body 110 is released, and the break-off spout 100 can be opened.

Here, as shown in FIG. 9, since the guide unit 123 is composed of the first guide unit 124 and the second guide unit 125 arranged in the vertical direction at predetermined intervals, the guide unit 123 is the first guide unit. Compared with the case where the guide portion 123 and the second guide portion 125 are continuously formed, the contact area between the guide portion 123 and the guided portion 136 is smaller, and the cover 130 is relative to the spout body 110 during use. It is possible to reduce the resistance generated from the contact portion between the guided portion 136 and the guide portion 123 when rotating the spout 100, and the spout 100 can be easily opened with a small force.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design changes can be made without departing from the present invention described in the claims. It is possible.

In the above-described embodiment, the guide portion is composed of a first guide portion and a second guide portion, and the first guide portion is formed so as to gradually project outward in the radial direction as it goes downward. However, the configuration of the guide portion is not limited to this, and for example, the first guide portion may be formed so as to undulate outward in the radial direction from the upper portion to the lower portion of the first guide portion. The amount of protrusion outward in the radial direction may be uniform from the upper part to the lower part, and the second guide portion may be formed in the same shape as the first guide portion.
Further, in the above-described embodiment, the first guide portion has been described as having an upper end portion formed on the tapered surface, but the position and shape of the guide portion are not limited to this, and for example, the first guide portion. The upper end of the surface may be formed from below the tapered surface.

Further, in the above-described embodiment, it has been described that a tapered surface for expanding the diameter of the tubular portion from above to downward is formed between the weakened portion of the tubular portion and the flange portion. The configuration is not limited to this, and for example, the tapered surface may not be formed, and the diameter from the weakened portion of the tubular portion to the flange portion may be uniform.
Further, in the above-described embodiment, the guide unit has been described as being composed of the first guide unit and the second guide unit, but the configuration of the guide unit is not limited to this, and for example, the first guide unit and It may be composed of a second guide portion and a third guide portion, and may be arranged so as to be arranged in the vertical direction at predetermined intervals.

Further, in the above-described embodiment, it has been described that the lower guide portion is formed continuously with the second guide portion below the second guide portion, but the configuration of the guide portion and the lower guide portion is different. The present invention is not limited to this, and for example, the second guide portion and the lower guide portion may be separated or may not have the lower guide portion.
Further, in the above-described embodiment, the lower end surface of the lower guided portion has been described as forming a lower inclined surface that gradually protrudes inward in the radial direction toward the upper side. The configuration of the guide portion is not limited to this, and for example, the lower guided portion may project uniformly from above to below, and the lower inclined surface may be formed of a flat surface or may be a chamfered R surface. It may be configured.

Further, in the above-described embodiment, it has been described that the guide portion is formed in a pair of rib shapes and the guided portion is formed in a rib shape, but the shapes of the guide portion and the guided portion are not limited to this. For example, the guided portion may be formed in a pair of ribs, or the guided portion may be composed of a first guided portion and a second guided portion in which the guided portions are arranged at predetermined intervals in the vertical direction. ..
Further, in the above-described embodiment, the insertion arms are evenly arranged in four circumferential shapes on the upper part of the inner peripheral surface of the skirt wall on the long side side, and each insertion arm has a circumference facing the adjacent insertion arm. Although it has been described as being arranged so as to extend in the direction, the number of insertion arms is not limited to this, and for example, only one insertion arm may be provided, and two insertion arms are symmetrically 1 They may be provided one by one.

Further, in the above-described embodiment, on the inner surface of the engaging hole, a locking protrusion formed so as to protrude inward in the radial direction of the tubular portion from the inner surface on the outer side in the radial direction of the engaging hole extends vertically in the axial direction. However, the location where the locking protrusion is formed is not limited to this, and for example, the locking protrusion is provided from the inner side surface of the engagement hole on the inner side in the radial direction to the outer side in the radial direction of the cylinder portion. May be provided, and there may be no locking protrusion.
Further, in the above-described embodiment, it has been described that the bulging portion is formed so as to protrude outward in the radial direction from the outer peripheral surface above the engaging hole of the operating arm. The present invention is not limited, and for example, it may be formed so as to protrude outward in the radial direction from the outer peripheral surface below the engagement hole of the cut-off portion, or may have no bulging portion.

Further, in the above-described embodiment, it has been described that an engaging window and an engaging protrusion functioning as a retaining portion are provided, but the configuration of the retaining portion is not limited to this, and for example, the outer circumference of the tubular portion is provided. Wedge-shaped protrusions provided symmetrically in the vertical direction may be provided on the inner peripheral surface of the surface and the cover, and may be engaged with each other to function as a retaining portion.

100 ・ ・ ・ Folding spout 110 ・ ・ ・ Spout body 111 ・ ・ ・ Cylinder part 112 ・ ・ ・ Connection part 113 ・ ・ ・ Mounting part 114 ・ ・ ・ Flange part 115 ・ ・ ・ Flow path 116 ・ ・ ・ Folding part 117 ・ ・ ・ Operating arm 118 ・ ・ ・ Engagement hole 119 ・ ・ ・ Locking protrusion 120 ・ ・ ・ Swelling part 121 ・ ・ ・ Weakened part 122 ・ ・ ・ Engaging part (engaging part)
123 ・ ・ ・ Guide part 124 ・ ・ ・ 1st guide part 125 ・ ・ ・ 2nd guide part 126 ・ ・ ・ Lower side guide part 127 ・ ・ ・ Tapered surface 130 ・ ・ ・ Cover 131 ・ ・ ・ Cover top surface 132 ・・ ・ Skirt wall 133 ・ ・ ・ Insertion arm 134 ・ ・ ・ Passing part 135 ・ ・ ・ Engagement window (engaged part)
136 ・ ・ ・ Guided part 137 ・ ・ ・ Lower side guided part 138 ・ ・ ・ Lower inclined surface

Claims (8)

A spout body having a tubular portion having a flow path penetrating the center and a folding portion integrally formed from the tip of the tubular portion via a weakened portion, and the tip of the flow path can be closed by the folding portion. , A break-off spout provided with a cover covering the outer periphery of the tip end side of the cylinder portion of the spout body.
The cover is formed as a separate body so as to be covered from the tip end side of the spout body and cover the cut-off portion, and a peripheral edge is formed by a pair of long side portions facing each other and a pair of short side portions facing each other. It has a surface and a skirt wall that hangs down from the peripheral edge of the cover top surface.
The cover is formed so as not to come into contact with the cut-off portion while covering and fixing the tip side of the spout body.
The spout body has an engaging portion and a guide portion arranged above the engaging portion.
The skirt wall has an engaged portion and a guided portion arranged above the engaged portion.
When the engaging portion and the engaged portion engage with each other to prevent the cover and the spout body from coming off and engage with each other, and when the cover is rotated about the flow path, the cover and the spout body are engaged with each other. It is configured as a retaining portion that can disengage the engagement between the cover and the spout body.
The guide portion is a folding spout characterized in that it is divided into a plurality of upper and lower parts. The break-off spout according to claim 1, wherein the length of the guided portion is a length that is always in contact with any of the guide portions divided into upper and lower parts. A lower guided portion is provided below the engaged portion.
A claim characterized in that the guided portion and the lower guided portion are in contact with the guide portion arranged above the engaging portion at least at the start of the retaining engagement of the retaining portion. The cut-off spout according to claim 1 or 2. The break-off spout according to any one of claims 1 to 3, wherein the upper portion of the guide portion is formed so as to gradually approach the guided portion side as it goes downward. The guide portion includes a first guide portion and a second guide portion located below the first guide portion.
The break-off spout according to any one of claims 1 to 4, wherein the upper portion of the second guide portion is formed so as to gradually approach the guided portion side as it goes downward. .. Below the engaging portion of the spout body, a lower guide portion for guiding the lower guided portion is provided.
Any of claims 3 to 5, wherein the lower guided portion and the lower guided portion are in contact with each other when the retaining portion completes the retaining engagement. The cut-off spout described in. The guided portion is formed in a rib shape extending in the vertical direction.
The guide portion according to any one of claims 1 to 6, wherein the guide portion is formed in a pair of ribs extending in the vertically direction arranged so as to sandwich the guided portion from the side. Breaking spout. The retaining portion includes an engaging window provided on the skirt wall on the long side side as a retaining portion on the cover side, and an engaging projection provided on the tubular portion as a retaining portion on the spout side. Consists of
The engaging window is provided longer than the engaging projection in the circumferential direction, and at least one end of the engaging window in the circumferential direction is engaged when the cover is rotated about the flow path. The break-off spout according to any one of claims 1 to 7, wherein the break-out spout reaches the outside of the circle drawn by the protrusion.

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