JP2013079091A - Spout with opening member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout with an opening member capable of opening a container by cutting a part without removing a member sealing the container.
As the cap 3 is opened, the opening member 4 for breaking the sealing member 5 that seals the container body is interlocked to form an opening piece in which a part of the sealing member 5 is broken. Provided is a spout in which a piece is surely pushed inward into a container body and does not block a spout.
[Selection] Figure 1

Description

  The present invention relates to a spout that is a spout for a container that contains a fluid-like content, and in particular includes an opening member that breaks a sealing member that seals the opening of the container.

  Conventionally, a spout made of synthetic resin has been widely used as a drinking mouth or spout in a container such as a paper pack laminated with a heat-sealable synthetic resin film. This spout is generally provided with a flange that is heat-sealed with the container, and a thread is formed on the outer peripheral surface of the extraction tube extending in a cylindrical shape from the flange so that the cap can be screwed. Moreover, the opening peripheral part of a container and the sealing surface of a flange are heat-seal | fused, a container and a spout are integrated, and the spout stopper in a container is formed.

  Moreover, the spout provided with the cylindrical cutter which fractures | ruptures the sealing member which sealed (sealed) the opening part of the container and opens a container is known. The spout has a threaded portion formed on the inner peripheral surface of the dispensing tube and a cap screwing screw portion formed on the outer peripheral surface of the spout. The spout is cylindrical when the cap is rotated in the opening direction. The cutter moves in the direction opposite to the upward direction of the cap, that is, toward the container body. Then, the seal member sealing the container opening is broken, and the seal member is broken together with the opening of the cap to open the container body.

  As a spout equipped with a cylindrical cutter that breaks the seal member, for example, in Patent Document 1, a cut piece of the seal member is not mixed in the container, and an open piece is not caught by the container body and the piercing tool. What is made to be disclosed is disclosed. Specifically, the sealing film is broken by the cutting edge formed at the lower end of the cylindrical piercing tool, and the cutting edge of the cutting edge having a different height, the flat portion, and the pedestal portion are arranged in an annular arrangement. It has been done. Thereby, the pedestal portion of the annular blade edge does not pierce the sealing film, pushes the opening piece pierced by the blade protrusion into the container, and the opening piece of the portion pierced so far is poured. It can prevent being caught between an exit main body and a piercing tool.

  Patent Document 2 discloses a cap that breaks only a part of the cutting member by reducing the rotation angle of the moving cylinder to leave a remaining portion, and a plurality of blade portions are provided at the lower end of the moving cylinder. It is described that the cutting member which has the trough part formed between the predetermined blades is formed. Furthermore, Patent Document 3 describes a structure in which the cylindrical cutter is engaged with a screw-shaped stopper formed on the inner peripheral surface of the dispensing cylinder so that the cylindrical cutter is not detached from the spout and dropped into the container body. Has been.

JP-A-11-171233 JP 2005-104506 A JP 2010-23873 A

  However, in the spout described in Patent Document 1, although the sealing film can be pressed by the pedestal included in the blade tip of the piercing tool, the pierce and the blade protrusion are the blade tips that are annularly arranged, so that they were pierced. There was a possibility that the opened piece could not be pushed in sufficiently, and there was room for improvement.

  Moreover, in the cap of patent document 2, in order to form a notch part and to prevent fall and entrainment of a cut piece, it breaks only while the holes formed by the tips of the blades are connected, and during this time the top wall In order to maintain the tension, the broken part was not pressed. Therefore, after completion of the breaking line, that is, after the cutting operation of the cut portion from the top wall is completed, the cut piece that has been cut off and loses its tension is pushed down. was there. There was a risk of blocking the pouring of the contents by sticking out the pouring channel by protruding inside the pouring cylinder.

  Therefore, the present invention has been made paying attention to the technical problem described above, and a part of a member that has sealed the container is broken along with the opening operation, and the opened piece is not detached. An object of the present invention is to provide a spout with an unsealing member that does not block the dispensing channel.

  In order to solve the above-described problems of the prior art, in the invention according to claim 1, a cap for closing the spout is screwed to a spout body provided in a container mouth portion sealed by a breakable seal member. In addition, in the spout with an unsealing member provided inside the spout body, a cylindrical unsealing member is provided that spirally rotates in the direction of breaking the sealing member as the cap rotates in the opening direction. A blade portion that rotates while piercing the outer peripheral portion of the seal member and a pressing portion that presses the seal member are formed to protrude toward the seal member at the leading edge of the opening member. The pressing portion is disposed in front of the blade portion in the rotation direction when the opening member rotates spirally and moves toward the sealing member, and the rotation portion It is inclined so as to protrude toward the sealing member side from the leading part toward the tail part with respect to the direction, the trailing part is adjacent to the leading part of the blade part, and the most sealing member side related to the pressing part The protruding portion is formed so as not to protrude from the top of the blade portion.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the blade portion is inclined so as to protrude toward the seal member from the top portion to the top portion of the blade portion with respect to the rotation direction. A spout with an opening member, wherein the pressing portion is formed on an inclined portion of the blade portion.

  According to a third aspect of the present invention, in addition to the configuration of the first aspect, the pressing portion is a protrusion formed at a tip edge of the opening member at a position adjacent to the front side in the rotational direction with respect to the blade portion. It is a spout with an opening member characterized by being a part.

  According to the first aspect of the present invention, the seal member that has sealed the container body in conjunction with the opening operation can be opened, and the unsealed piece of the seal member that has been broken at the time of the opening can be opened in the container body. It is possible to prevent the unsealing pieces from being blocked, and to prevent the unsealing pieces from closing the pouring flow path communicating with the inside of the pouring outlet. Further, along with the breakage by the blade part, the opening piece can be surely pushed into the container body side by the pressing part, and the opening part can be formed beautifully.

  According to the second aspect of the invention, in addition to the effect of the first aspect, since the pressing portion is formed on the inclined portion of the blade portion, the blade member is pierced from the top portion of the blade portion by the helical rotation of the opening member. The seal member thus cut and torn can be smoothly pressed by the pressing portion.

  According to the invention of claim 3, in addition to the effect of claim 1, it becomes possible to press the seal member on the front side in the spiral rotation of the opening member, and the opening piece accompanying the movement in the axial direction Can be reliably pushed into the container body.

The side surface sectional view in the closed state of the container spout according to one embodiment of this invention is typically shown. The side surface sectional view in the open lid state of the spout for containers concerning one embodiment of this invention is shown typically. It is side surface sectional drawing which showed typically the exploded view of the container outlet. The side view of the opening member which concerns on one Embodiment, the upper surface perspective view, and the lower surface perspective view are shown. The side view of the opening member which concerns on other embodiment, a top perspective view, and a bottom perspective view are shown.

  The present invention will be specifically described below. A spout with an opening member according to the present invention is fixed to a container body containing fluid contents and functions as a spout after opening, and breaks the sealing member sealing the container body. It is a spout provided with a function of opening the container body. In addition, before opening the seal member by breaking, the opening member can be operated so as to break the seal member before breaking and opening in conjunction with the opening operation of the cap closing the spout with the opening member. It can be done. In addition, only a part of the seal member is broken and the opened opening and the communication outlet channel are closed so that a part of the seal member and the opened piece broken by the opening member are not separated into the container body. It is a spout with an opening member which accommodates an opening piece so that there may not be.

Example 1
1 is a side cross-sectional view schematically showing a spout 1 with an unsealing member in Example 1. FIG. In the spout 1 with the unsealing member, each constituent member is formed of a synthetic resin material, and the unsealing member 4 attached to the inner peripheral surface of the spouting cylinder portion 21 of the spout body 2 is connected to the spouting cylinder portion 21. In conjunction with the opening operation of the cap 3 that is screwed onto the outer peripheral surface and sealed so as to seal the opening of the spout body 2, the inside of the dispensing tube portion 21 moves in a direction that breaks through the seal member 5. The seal member 5 is broken. As shown in FIG. 3, a protruding blade portion 44 that functions as a blade that pierces the seal member 5 at the opening edge 43 formed at the leading edge of the opening member 4 and cuts by rotation, and functions as such a blade. And a pressing portion 45 that presses the seal member 5 is formed, and the opening portion 43 comes into contact with the seal member 5 and is broken. Further, the lower opening of the spout cylinder 21 of the spout body 2 is sealed by the seal member 5, and the container body is fixed to the base 22. The container body (not shown) accommodates contents, and may be a bag-like container such as a so-called pouch laminated with a synthetic resin film, or may be a container based on paper or the like. Good.

  The spout body 2 includes a dispensing cylinder portion 21 capable of dispensing the contents accommodated in the container body, and a base portion 22 fixed to the container body. The dispensing cylinder portion 21 rises from the base portion 22 and is integrally formed with a cylindrical shape. A female screw 24 is formed on the inner peripheral surface of the dispensing cylindrical portion 21 to be screwed with the unsealing member 4. A male screw 23 that is screwed into the cap 2 and an annular protrusion 25 that facilitates transportation by being supported during transportation are formed. More specifically, the male screw 23 formed on the outer peripheral surface of the dispensing cylinder portion 21 is screwed with the female screw 33 formed on the inner peripheral surface of the cap 3. Further, the female screw 24 formed on the inner peripheral surface of the dispensing cylinder portion 21 is screwed with the male screw 41 formed on the outer peripheral surface of the opening member 4, and the opening member 4 enters the container body. A convex portion 24a is formed on the lower screw thread of the female screw 24 in order to prevent it from protruding and falling off. The spout body 2 can prevent the unsealing member 4 from falling off by engaging the projecting portion 24 a with the projecting portion 41 a formed on the unsealing member 4. Further, the male screw 23 and the female screw 24 are in a reverse screw relationship. That is, as the cap 3 moves upward in the opening operation of the cap 3 that is screwed to the outer peripheral surface of the dispensing cylinder portion 21, the unsealing member that is screwed to the inner peripheral surface of the dispensing cylinder portion 21 The relationship between the male screw 23 and the female screw 24 is determined so that 4 moves in the direction of breaking through the seal member 5.

  Moreover, the base 22 functions so that a container main body can be attached. For example, the container main body and the spout main body 2 can be integrally attached by heat-sealing the edge of the inner surface of the container main body to the outer peripheral surface of the base 22. Further, the inner peripheral diameter of the base portion 22 is made larger than the inner peripheral diameter of the dispensing cylinder portion 21 to form the stepped portion 26, and the seal member 5 is integrally formed on the lower surface of the stepped portion 26 and the inner peripheral surface of the base portion 22. It is glued. The seal member 5 may be formed integrally with the container body. Further, when the lid is opened, the spout body 2 forms the opening of the spout 1 with the opening member, and the upper and lower ends of the extraction cylinder portion 21 and the base portion 22 are open ends, It communicates. Note that the shape of the base portion 22 can be grasped or grasped when the user opens the cap 3, and the outer peripheral portion thereof may be formed in a shape that facilitates the opening operation of the cap 3. For example, it may be a circular base 22 having a diameter larger than the outer diameter of the cap 3, and is formed in a smooth shape with a diagonal portion formed in a substantially rhombus shape and an obtuse angle, and a diagonal portion. There may be.

  The cap 3 seals the mouth portion of the spout 1 with an opening member, and includes a top plate portion 31 that seals the open end of the spout body 2, and a spout hanging from the peripheral portion of the top plate portion 31. A skirt portion 32 formed so as to cover a part of the outer peripheral surface of the pouring cylinder portion 21 of the main body 2, and a locking rib 42 of the unsealing member 4 that is suspended from the lower surface portion of the top plate portion 31. And a locking piece 34 formed to do so. On the inner peripheral surface of the skirt portion 32, a female screw 33 is formed which is screwed with the male screw 23 formed on the outer peripheral surface of the extraction tube portion 21 of the spout body 2.

  In addition, a plurality of locking pieces 34 are formed in a suspended manner on the top plate portion 31. The locking pieces 34 have, for example, a horizontal cross section that is arcuate in the circumferential direction of the top plate portion 31 and linear in the radial direction. It is formed in a wedge shape so as to be a substantially triangular shape. More specifically, locking pieces 34 are formed corresponding to the number of locking ribs 42 formed on the opening member 4, and the cap 3 rotates in accordance with the opening and closing operation, and the opening operation is performed. In FIG. 2, the locking surface 34 a formed in a linear shape in the radial direction of the locking piece 34 abuts on the locking rib 42 of the opening member 4. On the other hand, in the sealing operation, in the arc surface of the circular arc portion in the circumferential direction of the locking piece 34, the locking angle 34 b that is a top angle portion that is a surface different from the locking surface 34 a is the locking of the opening member 4. It abuts on the rib 42.

  Further, the locking piece 34 formed so as to hang down in the axial direction is formed such that the portion forming the locking surface 34a hangs longer than the portion forming the locking angle 34b, and the locking angle 34b. An inclined surface 34c is formed so as to incline with respect to the axial direction from the lower end thereof to the lower end of the locking surface 34a. In other words, in the opening operation in which the cap 3 rises with respect to the dispensing cylinder portion 21 of the spout body 2 and the opening member 4 moves in a direction to break through the sealing member 5, that is, the locking surface 34a of the locking piece 34 is opened. Even when the lower end of the locking angle 34b of the locking piece 34 moves above the upper end surface of the unsealing member 4 in the state of being locked with the locking rib 42 of the member 4, the engagement with the locking surface 34a. The locked state with the stop rib 42 is continued. The inclined surface 34c of the locking portion 34 may be linearly formed from the lower end of the locking angle 34b to the lower end of the locking surface 34a, or may be curved and curved. There may be.

  The opening member 4 is attached to the inside of the spout body 2 so that the opening member 4 can move in the direction of the container body relative to the dispensing cylinder portion 21 so as to protrude inward of the container body as the cap 3 is opened. A male screw 41 is formed on the outer peripheral surface of the spout body 2 to be engaged with the female screw 24 formed on the inner peripheral surface. The upper thread portion of the male screw 41 is formed with a convex portion 41a that is engaged with the convex portion 24a of the female screw 24 so that the unsealing member 4 is not detached from the dispensing cylinder portion 21 into the container body. . Therefore, the opening member 4 is rotated and moved spirally in a direction that breaks through the seal member 5 that seals the opening of the container body as the cap 3 rotates in the opening direction. .

  The opening member 4 is formed in a cylindrical shape through which the contents accommodated in the container body can pass, and the inner peripheral surface of the opening member 4 extends in the axial direction and engages with the locking piece 34 of the cap 3. A stop rib 42 is formed. When the locking rib 42 is locked to the locking piece 34, the opening member 4 rotates in the same direction as the rotation direction of the cap 3. Therefore, since the male screw 23 and the female screw 24 in the dispensing tube portion 21 of the spout body 2 are in a reverse screw relationship, the unsealing member 4 that is rotated around the cap 3 in conjunction with the unsealing operation is Contrary to the ascending direction, the seal member 5 moves in the direction of breaking through. The male screw 41 and the female screw 24 may be multi-threaded screws having a plurality of screw threads, and the male screw 23 and the female screw 33 may be single-threaded screws having a single thread. That is, the number of threads is not limited, and the moving distance in the axial direction of the opening member 4 is larger than the moving distance in the axial direction of the cap 3 with respect to the rotation of the cap 3. It is preferable. Further, an opening portion 43 is formed at the lower end of the opening member 4 so as to protrude downward from the horizontal surface of the cylindrical lower end and break the seal member 5.

  A plurality of the locking ribs 42 are provided along the axial direction on the inner peripheral portion of the tubular opening member 4 and have a protruding horizontal cross section protruding from the inner peripheral surface toward the center in the radial direction. Formed as follows. For example, in the case of the locking rib 42 that protrudes in the radial direction so that the horizontal cross section has a quadrangular shape, the surface that contacts the locking piece 34 is different. That is, an opening locking surface 42a that contacts the locking surface 34a of the locking piece 34 and a setting locking surface 42b that contacts the locking angle 34b of the locking piece 34 are formed in the circumferential direction. . Further, when a plurality of locking ribs 42 are arranged at equal intervals on the inner peripheral surface, four locking ribs 42 are arranged at 90 ° intervals. That is, one or a plurality of locking pieces 34 corresponding to the number and arrangement of the locking ribs 42 are formed to hang from the top plate portion 31 of the cap 3.

  Further, the upper end of the opening locking surface 42a may be formed so as to protrude above the upper end of the setting locking surface 42b. For example, when the upper and lower end surfaces of the cylinder of the unsealing member 4 are horizontal surfaces, and the upper end portion of the setting locking surface 42b is located below the upper end base line with respect to the base lines that are the horizontal surfaces, the upper end portion of the unsealing locking surface 42a Is arranged at a position protruding above the upper end base line. That is, an inclined surface 42c is formed at the upper end of the locking rib 42 so as to be inclined downward in the axial direction from the upper end of the opening locking surface 42a toward the upper end of the setting locking surface 42b. A plane parallel to a plane perpendicular to the axial direction is called a horizontal plane.

  In addition, a portion protruding downward from the lower end base line on the bottom end surface of the cylinder is an opening portion 43 in the opening member 4. In other words, in a state where the opening member 4 is mounted in the spout body 2, the opening portion 43 protruding toward the seal member 5 is disposed at the leading edge of the opening member 4 on the seal member 5 side. Become. The unsealing portion 43 includes a blade portion 44 that pierces the seal member 5 in the axial direction and can be broken by tearing by rotation, and a pressing portion 45 that presses the seal member 5. In the opening member 4 according to this embodiment, an opening portion 43 having a plurality of blade portions 44 is provided, and a part of the opening portion 43 is not blocked by the opening portion 43 so as not to block the discharge passage communicated after the seal member 5 is broken and opened. The broken open piece is accommodated.

  As shown in FIG. 4, the blade portion 44 protrudes downward from the bottom end surface of the tube in a substantially triangular shape and has a sharp edge, and moves in a direction in which the opening member 4 breaks through the seal member 5. A top portion 44c is formed between the front blade 44a inclined with respect to the horizontal plane on the front side in the rotation direction and the rear blade 44b inclined on the rear side. The front and rear blades 44a and 44b are disposed at positions retracted from the top portion 44c that protrudes most toward the seal member 5 in the axial direction. In other words, the front and rear blades 44a and 44b form an inclined portion in a triangular shape with the top portion 44c protruding most with respect to the rotation direction.

  The fact that the edges of the front blade 44a, the rear blade 44b, and the top portion 44c are sharply formed means that the front blade 44a has a blade surface S that is a surface inclined from a horizontal plane in the radial direction. The rear blade 44b has a blade surface Sb, and the top portion 44c has a blade surface Sc. In other words, it can be said that the blade surface S is an inclined surface inclined in the thickness direction. The sharpness of each of the blade surfaces Sa, Sb, Sc can be set. For example, the respective inclination angles can be set so that the blade surfaces Sa, Sb are sharper than the blade surface Sc. These blade portions 44 are arranged so that the respective blades are adjacent to each other, and in the rotation direction when the unsealing member 4 moves in the direction of breaking through the seal member 5, the rear blade portion of each rear blade 44b is connected to the next blade portion 44. It arrange | positions so that the front part of the front blade 44a which concerns may be connected. Further, the leading portion of the front blade 44 a of the blade portion 44 at the leading end in the rotation direction is formed so as to be connected to the bottom end surface of the cylinder that is a horizontal plane via the pressing portion 45.

  The pressing portion 45 is formed so that the edge portion is formed on a flat surface in the radial direction, and the sealing member 5 is pushed downward, and the opening piece 5a which is the broken sealing member 5 is opened so as not to block the opening portion. The piece 5 a is accommodated outside the outer peripheral surface of the opening member 4. The pressing portion 45 is disposed in front of the blade portion 44 in the rotational direction when the opening member 4 moves in a direction to break through the sealing member 5, and from the leading portion to the trailing portion with respect to the rotational direction. It is inclined so as to protrude toward the seal member 5, and the tail portion thereof is formed so as to be continuous with the leading portion of the front blade 44 a of the blade portion 44. Further, the pressing portion 45 is formed to a height of half or more of this height with respect to the height from the bottom end surface of the tube to the top portion 44c of the blade portion 44. That is, the pressing portion 45 is formed such that the contact portion between the pressing portion 45 and the front blade 44a is at a position that is at least half the height from the lower end base line to the top portion 44c.

  The pressing portion 45 does not tear the seal member 5 like the blade portion 44, and specifically, the edge portion of the pressing portion 45 is not formed in a sharp shape like the blade portion 44. For example, the blade surface S that contacts the seal member 5 in the blade portion 44 is sharply inclined in the radial direction, whereas the surface that contacts the seal member 5 in the pressing portion 45 is a flat surface parallel to the radial direction. It becomes. In other words, the end portion in the horizontal plane that forms the cylinder lower end surface is inclined in the axial direction to form the pressing portion 45. That is, when the leading crest in the unsealing portion 43 is the pressing portion 45 and the leading blade portion 44, the inclined portion on the front side in the rotation direction during the unsealing operation from the top portion 44c is the steeply inclined pressing portion 45. It is formed by the front blade 44a which is inclined. Further, when the lower end surface of the opening member 4 is viewed from below, the semicircular portion is a flat portion where the opening portion 43 is not formed, and the pressing portion 45 and the plurality of blade portions 44 are adjacent to the remaining semicircular portion. An unsealing portion 43 is disposed so as to fit.

  Moreover, the spout 1 with an opening member has the sealing member 5 which seals the lower end part of the extraction cylinder part 21 of the spout main body 2. FIG. This sealing member 5 is a sheet material mainly made of aluminum foil or a gas barrier resin film or the like, formed into a cup shape, and closes the lower opening of the spout cylinder portion 21 of the spout body 2, It is provided so as to cover the inner surface of the base 22 of the spout body 2. The seal member 5 only needs to be formed of a material that can be broken by the helical rotation of the opening member 4. The sheet member 5 may be formed integrally with the container body.

  Next, the opening operation | movement of the spout 1 with an opening member in this Example 1 is demonstrated. The state in which the seal member 5 seals the container body is the state illustrated in FIG. 1, and the state in which the seal member 5 is broken by the opening member 4 and accommodates the opening piece 5 a is illustrated in FIG. 2. It is a state to do.

  When the cap 3 is rotated in the opening direction, the locking piece 34 is locked with the locking rib 42 and starts rotating in the same rotation direction. At that time, since the female screw 33 and the male screw 23 and the female screw 24 and the male screw 41 are in a reverse screw relationship, the cap 3 is moved upward with respect to the dispensing tube portion 21 and the opening member 4 is a sealing member. Move in the direction of breaking through 5. When the unsealing member 4 moves in the axial direction to a predetermined height, the unsealing portion 43 formed at the lower end of the unsealing member 4 comes into contact with the sealing member 5.

  The contact between the opening portion 43 and the outer peripheral portion of the seal member 5 starts from the top portion 44c of the blade portion 44, and the contact portion gradually changes to the front and rear blades 44a and 44b as the opening operation proceeds. At this time, the sealing member 5 is pierced when moving into the container main body by movement in the axial direction in the blade portion 44, and tearing by the blade surface S as it moves in the circumferential direction accompanying spiral rotation. Is broken.

  Then, the seal member 5 shifts from the contact with the blade surface Sa to the contact state with the pressing surface in the pressing portion 45. In this state, the seal member 5 is not torn by the blade surface S, but the seal member 5 is pressed and pushed downward by the pressing portion 45. Further, as the pressing portion 45 that remains in contact with the seal member 5 rotates and moves in the circumferential direction, the seal member 5 is pulled in the rotation direction by the pressing portion 45 and undulates in the peripheral portion that contacts the pressing portion 45. A wrinkle having such a shape is formed in the seal member 5, and a part of the seal member 5 in the peripheral portion is broken. When the pressing portion 45 further rotates, the sealing member 5 gradually loses its horizontal tension as it is broken. Therefore, even if the sealing member 5 and the pressing portion 45 come into contact with each other, the sealing member 5 is not broken. Then, it is pushed downward along the inclination of the pressing portion 45. As a result, an opening piece 5a is formed which is accommodated so as to hang down between the outer peripheral surface of the opening member 4 and the inner peripheral surface of the base 22 of the spout body 2.

  Even after the pressing portion 45 starts to contact the sealing member 5 and the breakage by the blade portion 44 is finished, the sealing member is kept until the opening piece 5a is accommodated between the opening member 4 and the base portion 22 as described above. 5 is pushed downward by the pressing portion 45. Even when the up-down direction illustrated in FIG. 1 and the like is reversed, when the sealing member 5 is opened in the spout 1 with the opening member, the opening piece 5a is gradually removed due to the breaking of the sealing member 5 by the opening member 4. It was confirmed that it was accommodated between the opening member 4 and the base 22 while standing up. That is, by pressing the sealing member 5 by the pressing portion 45, the opening piece 5a can be formed without closing the opening regardless of the vertical direction.

  Further, the unsealed piece 5a is not completely detached from the seal member 5, and a part in the circumferential direction is not broken. This is because the leading edge of the front blade 44a of the leading blade part 44 and the trailing edge of the trailing blade 44b of the trailing blade part 44 are circular in the blade part 44 arranged adjacent to the series in the opening part 43. This is because the blade portion 44 descends below the sealing surface before being connected on the circumference. In addition, if the angle which this blade part 44 is contacting and rotating to the sealing member 5 is about 200 degrees-250 degrees, the opening piece 5a will be formed beautifully. Also, it has been confirmed by experiments that the blade portion 44 can be set so as to be lowered from the sealing surface when the rotation angle is about 225 °.

(Example 2)
Next, another embodiment of the present invention will be described. In this second embodiment, instead of the pressing portion 45 formed in the opening portion 43 of the opening member 4 in the first embodiment, an opening member 7 having a pressing portion 75 having a shape different from that of the pressing portion 45 is used. is there. Therefore, except for the difference between the pressing portions 45 and 75, Example 1 and Example 2 have the same configuration, and the description of the same configuration is omitted.

  The pressing portion 75 is formed in a triangular shape when the opening member 7 is viewed from the radial side surface, and a top portion 75c is formed between the pressing surface 75a on the front side and the pressing surface 75b on the rear side in the rotational direction when moving downward. Have The pressing surface 75 and the blade portion 44 are adjacent to each other so that the rear portion of the pressing surface 75b and the leading portion of the front blade 44a of the leading blade portion 44 are in contact with each other. Like the pressing portion 45, the pressing portion 75 is not formed as sharply as the blade portion 44, but includes pressing surfaces 75a and 75b formed on flat surfaces. In addition, it forms so that the inclination of the press surface 75b may become gentle with respect to the press surface 75a.

  The spout with an opening member according to the present invention is not limited to the above-described embodiment. Modifications can be made as appropriate without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Container spout, 2 ... Spout main body, 3 ... Cap, 4, 7 ... Opening member, 5 ... Seal member.

Claims (3)

A cap that closes the spout is screwed into a spout body provided at a container mouth portion sealed by a breakable seal member, and the cap is rotated in the direction of opening the lid inside the spout body. With a spout with an opening member provided with a cylindrical opening member that rotates and moves spirally in a direction that breaks through the seal member,
A blade portion that rotates while piercing the outer peripheral portion of the seal member, and a pressing portion that presses the seal member with an edge portion formed on a flat surface are formed on the leading edge of the opening member so as to protrude toward the seal member. ,
The pressing portion is disposed on the front side of the blade portion in the rotation direction when the opening member rotates spirally and moves toward the sealing member, and has a leading end with respect to the rotation direction. It is inclined so as to protrude toward the seal member from the portion toward the tail portion, and the tail portion is adjacent to the leading portion of the blade portion, and the portion protruding most toward the seal member relating to the pressing portion is the A spout with an opening member, wherein the spout is formed so as not to protrude from the top of the blade portion. The blade portion has an inclined portion that is inclined so as to protrude toward the seal member from the leading portion of the blade portion toward the top with respect to the rotation direction,
The spout with an opening member according to claim 1, wherein the pressing portion is formed on an inclined portion of the blade portion. 2. The opening member according to claim 1, wherein the pressing portion is a protrusion formed at a front edge of the opening member at a position adjacent to a front side in the rotation direction with respect to the blade portion. Spout with.

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