JP2006341914A - Spout - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spout of a constitution by which a uniform pressing force is applied when a crown body is fitted on an elastic body being enclosed in a mouth section. <P>SOLUTION: This spout 1 is equipped with the mouth section 10 which specifies an internal space S in which the elastic body 30 is enclosed, and at the same time, which communicates with a liquid passage 9 for sucking out a content, and the crown body 50 which is fitted on the mouth section 10, and imparts the pressing force to the elastic body 30 being enclosed in the internal space. Then, the elastic body 30 which is enclosed in the mouth section 10 has a larger shape than the height and the inner diameter of the internal space of the mouth section 10. On the internal surface of the crown body 50, a slope 55 which tilts to the extracting direction is formed in such a manner that the elastic body 30 being enclosed in the mouth section may be brought into press-contact with the crown body 50 over the total periphery when the crown body is fitted on the mouth section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spout that is attached so as to close an opening of a container made of, for example, a synthetic resin and is used for taking in and out a container accommodated in the container.

  2. Description of the Related Art Conventionally, there is known a spout-equipped container in which a spout is attached to a container formed of a relatively flexible material such as a synthetic resin sheet in order to take out the contents contained therein. This spout is usually integrally molded with a synthetic resin or the like, and is placed between the above-described synthetic resin sheets and is heat-welded. Such a spout-equipped container is used in various fields, and various configurations of spouts have been developed accordingly.

  For example, as a usage mode of a container with a spout, there is one in which a sucking needle is inserted into a mouth part of a spout to extract a stored item, and this is supplied to a necessary place. In this case, an elastic body (rubber) into which the needle is inserted is sealed in the mouth portion of the spout so as to seal the contents and to be used a plurality of times.

  By the way, in such a configuration, the elastic body must have a considerably strong pressing force toward the central region where the needle is inserted. That is, if this pressing force is weak, there will be a gap between the inserted needle and the elastic body, or after the needle has been pulled out, the trace of the needle will remain and a passage will be created. This is because things are likely to leak out.

In order to solve such problems, Patent Document 1 discloses that a spout is formed with a mouth portion having an internal space, an elastic body is sealed in the mouth portion, and a crown body is attached to the mouth portion. Thus, a spout that imparts a pressing force to the elastic body is disclosed. An elastic body having a height substantially equal to or lower than the opening edge is enclosed in the mouth, and when the crown is attached, a pressing force along the axial direction (communication hole direction) is applied. By acting, the elastic body is expanded in the radial direction, whereby a pressing force is applied from the inner peripheral surface of the mouth portion. The crown is formed with a plurality of slits along the axial direction so that the crown can be easily attached.
Japanese Patent No. 2706632

  The spout as described above has been used in various fields, and accordingly, the overall size and attachment method for the container, etc., are created so as to be suitable for the use mode. Has been.

  For example, in the field of printers and the like, with the miniaturization of devices, it has been carried out by inserting a fine extraction needle and taking out the contents little by little, and with a very small spout, specifically with an inner diameter of 10 mm or less. A spout having a cylindrical mouth portion having a height of 5 mm or less may be used. In the configuration disclosed in Patent Document 1 described above, a sufficiently satisfactory performance can be achieved if the spout shape is large to some extent, but if the shape of the mouth portion becomes too small as described above, the enclosed elasticity The pressing force on the body may not be sufficient.

  That is, when the crown is attached, the elastic body is pressed in the axial direction so that the pressing force is applied from the inner surface of the wall of the mouth. When it becomes smaller, the pressing force toward the center may not be sufficiently applied. In particular, since the elastic body spreads toward the corner of the crown or the elastic body protrudes from the slit formed in the crown, an area where the pressing force weakens occurs. When the needle is inserted / removed, the contents may ooze out from the portion where the pressing force is weak.

  The present invention has been made based on the above-described problems, and provides a spout having a structure in which a uniform pressing force is applied to an elastic body sealed in a mouth when a crown is attached. The purpose is to do.

  In order to achieve the above-described object, the spout according to the present invention defines an internal space in which an elastic body is enclosed, and is attached to the mouth portion that communicates with the liquid passage for sucking out the contents. A crown for applying a pressing force to the elastic body sealed in the internal space, and the elastic body sealed in the mouth has a shape larger than the internal space of the mouth, and the crown An inclined surface that is inclined with respect to the extraction direction is formed on the inner surface of the body so as to press-contact the elastic body sealed in the mouth over the entire circumference when the crown is attached to the mouth. It is characterized by that.

  In the spout having the configuration described above, the elastic body sealed in the mouth is larger than the shape of the internal space of the mouth, so that the pressing force acting on the elastic body when the crown is attached is increased. It becomes possible to do. And the inclined surface inclined with respect to the extraction direction formed on the inner surface of the crown body presses the elastic body over the entire circumference when the crown body is attached to the mouth portion. The elastic body does not spread toward the surface and the pressing force does not weaken. That is, the inner surface of the crown body is pressed against the elastic body over the entire circumference by the inclined surface (a slit or the like that eliminates the pressed portion is not formed in the crown body), and the elastic surface of the elastic body is formed by the inclined surface. Since the pressing force directed toward the center acts directly, the pressing force against the elastic body is increased, and even if a small elastic body is sealed, the contents are prevented from oozing when the extraction needle is inserted and removed.

  The elastic body may be of a size that protrudes from the mouth when sealed in the mouth. For example, if a spherical or columnar elastic body is sealed in the cylindrical mouth, the height is high. A high shape is sufficient. In this case, it is preferable that the elastic body is larger than the inner diameter of the mouth portion because the pressing force acting from the inner peripheral surface of the mouth portion can be further increased. Moreover, about the above-mentioned inclined surface, it may be comprised by the cross-sectional shape at linear form, and you may be comprised by the curved form. By forming it in a curved shape in this way, it becomes possible to concentrate the pressure contact force by the inner surface of the crown body at substantially one point in the central direction, so that a larger pressure contact force can be applied.

  Further, it is preferable to form an inclined surface having an inclination substantially parallel to the inclined surface of the crown to be deposited from the inner wall to the bottom of the mouth.

  By forming the inclined surface on the mouth side in this way, the reaction force of the pressure contact force acting on the elastic body when the crown is attached is effectively generated. In other words, since the uniform pressing force toward the central direction effectively acts on the elastic body, leakage of the contents when the extraction needle is inserted and removed is more effectively prevented.

  Furthermore, it is preferable that a taper that is thinned toward the opening end is formed on the opening edge of the mouth portion so that the inclined surface formed on the crown to be attached is in contact with the opening.

  By forming such a taper, a stepped portion is not generated between the mouth and the crown, and a pressing force can be applied to the elastic body more effectively.

  In order to achieve the above-described object, the spout according to the present invention defines an internal space in which an elastic body is enclosed, a mouth portion communicating with a liquid passage for sucking out the contents, and a covering portion on the mouth portion. And an elastic body that applies a pressing force to the elastic body enclosed in the internal space, and the elastic body enclosed in the mouth portion is higher than the height and inner diameter of the internal space of the mouth portion. The inner surface of the crown body and the inner surface of the mouth portion are formed over the entire surface without causing a gap between the inner surface of the sealed elastic body and the surface of the sealed elastic body when the crown body is attached to the mouth portion. It is formed so that it may press-contact over.

  In the spout having the configuration described above, the elastic body sealed in the mouth is larger than the shape of the internal space of the mouth, so that the pressing force acting on the elastic body when the crown is attached is increased. It becomes possible to do. In addition, when the crown is attached to the mouth, there is no gap between the surface of the enclosed elastic body, and therefore, a pressure contact force from the surface toward the center acts on the elastic body. Therefore, even if the pressing force against the elastic body becomes substantially equal and a small elastic body is enclosed, the contents are prevented from oozing out when the extraction needle is inserted and removed.

  In the spout configuration as described above, even if the mouth portion is a small one having a maximum inner diameter of 10 mm or less and a maximum height of the internal space of 5 mm or less, it is effectively contained. Can be prevented from oozing out.

  According to the present invention, a spout capable of effectively preventing leakage of stored items by applying a uniform pressing force to the elastic body sealed in the mouth when the crown is attached. Is obtained.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
FIG. 1 to FIG. 6 are views showing a first embodiment of a spout according to the present invention, FIG. 1 is a perspective view showing the overall configuration of the spout, FIG. 2 is a cross-sectional view of the main body, and FIG. It is a figure which shows the crown attached to a part, (a) is a top view, (b) is sectional drawing along the AA line of FIG. (A), FIG. 4 encloses an elastic body in a mouth part FIG. 5 is a cross-sectional view showing a state where the elastic body is sealed and the crown body is attached, FIG. 5 is a diagram showing a change in shape before and after the elastic body is sealed, and FIG. It is sectional drawing of the spout of the sealed state.

  The spout 1 according to the present embodiment includes a main body 5, an elastic body 30 such as rubber sealed in a mouth portion of the main body 5, and a crown body 50 attached to the main body 5. . In this case, the main body 5 and the crown body 50 are integrally formed of resin or the like.

  The main body 5 includes a welding portion 6 having a pair of welding surfaces 6a to which opposite sheet materials (not shown) are welded, a cylindrical intermediate portion 8 protruding upward from the welding portion 6, and an intermediate portion 8 And a substantially cylindrical mouth portion 10 that encloses an elastic body. The welding portion 6 is formed to have a substantially boat-shaped cross section so that the sheet material can be easily welded to the welding surface 6a (the shape of the welding surface 6a is a flat surface or a curved surface). It can be modified as appropriate.

  The opposing sheet material is welded to the welding surface 6a, and the other edge portion is welded to form a bag-like container to which the spout 1 is attached, and is accommodated in this container. A liquid or the like, which is an object, is stored, and the stored object is extracted by inserting an extraction needle (not shown) into the central portion of the crown body 50.

  A communication hole (liquid channel) 9 is formed in the central portion of the main body 5 so as to extend in the vertical direction (extraction direction) and take out the stored item contained in the container. The communication hole 9 is welded. It extends from the portion 6 to the intermediate portion 8. That is, an extraction needle is inserted into the communicating hole 9 and the stored item is taken out by receiving a suction action.

  Above the intermediate portion 8, a mouth portion 10 that defines an internal space S in which the elastic body 30 is enclosed is formed. The mouth portion 10 has a substantially cylindrical shape with an outer diameter larger than the outer diameter of the intermediate portion 8 and opened upward, and includes a locking portion 12 having a larger diameter than the outer diameter of the intermediate portion 8. ing. In the central region of the bottom portion 10b of the mouth portion 10, the communication hole 9 is opened as it is, or as shown in the figure, the communication hole 9 is formed through a thin-walled sealing wall 13 (about 0.5 mm). It is supposed to be located.

  The shape of the mouth portion 10 is not particularly limited, but is configured in a cylindrical shape in the present embodiment so that a later-described crown body can be easily attached.

  An elastic body 30 is enclosed in the internal space S of the mouth portion 10. With respect to the elastic body 30, when the crown body 50 is attached, a pressing force is applied from the inner wall (inner peripheral wall) of the mouth portion 10 and the inner surface of the crown body 50 to be attached, and the extraction needle is inserted and removed. However, it functions so that the contents in the container do not leak. For this reason, the elastic body 30 has a shape larger than the internal space S of the mouth portion 10, and preferably has a spherical shape larger than the height H and the inner diameter D of the internal space S of the mouth portion in the configuration of the present embodiment. Has been. In other words, if the elastic body is at least higher than the height of the internal space, when the crown is attached, the elastic body spreads in the radial direction due to the pressure contact force, and the pressing force acts from the inner peripheral wall of the mouth. However, a configuration larger than the inner diameter D is preferable because the pressing force acts before the crown is attached.

  Specifically, in the present embodiment, the height H of the internal space S of the mouth portion 10 is set to 3.6 mm, and the inner diameter D is set to 5.5 mm. On the other hand, a spherical shape having a diameter of 6 mm is used. The elastic body 30 is enclosed.

  Further, with respect to the internal space of the mouth portion 10, an inclined surface 15 having an inclination is formed from the middle of the inner peripheral wall 10 a to the bottom portion 10 b so as to be substantially parallel to an inclined surface described later of the crown body 50 to be attached. It is preferable to keep. Furthermore, it is preferable to form the taper 16 which becomes thin toward the opening end at the opening edge of the mouth portion 10 so that the inclined surface of the crown body 50 to be attached is in contact with the opening. Such an inclined surface 15 and the taper 16 are formed over 360 ° with respect to the substantially cylindrical mouth portion 10.

  The crown 50 is formed in a cylindrical cap shape having no slits or openings so that a part of the sealed elastic body 30 does not protrude outward due to the pressing force. In addition, when mounted on the mouth portion 10, it is configured to be in contact with the outer peripheral surface of the mouth portion 10 and cover the entire mouth portion. Below the inner surface of the peripheral wall 50a of the crown body 50, a plurality of engaging portions 51 (three at 120 ° intervals or four at 90 ° intervals) projecting toward the center at a predetermined interval are formed. When the crown body 50 is attached to the mouth portion 10, the upper surface 51 a is engaged with the locking portion 12 formed in the mouth portion 10, so that the crown body 50 is attached without being loosened and prevented from coming off. It has come to be. For this reason, it is preferable to form a taper 51b on the lower surface side of the engaging portion 51 so as to easily fit into the outer peripheral wall of the mouth portion 10.

  Further, when the crown body 50 is attached to the mouth portion 10, the elastic body 30 sealed in the mouth portion is pressed against the inner surface of the crown body 50 with respect to the extraction direction D1. The inclined surface 55 inclined is formed. The inclined surface 55 is formed over 360 ° from the inner surface of the peripheral wall 50a of the crown body 50 to the inner surface of the upper wall 50b, and the cross section thereof is formed linearly. Then, as shown in FIG. 4, the inclined surface 55 is in contact with the taper 16 formed at the opening edge portion of the mouth portion 10 so as not to cause a step portion between the two at the time of deposition. It has become.

  Specifically, the crown 50 configured as described above has a height h of 7.6 mm, an inner diameter d of 7 mm, a distance h1 from the engaging position of the engaging portion 51 to the upper wall 50b of 4.7 mm, and the upper wall 50b. The diameter d1 is set to 4 mm. As shown in the figure, it is preferable to form a thin-walled portion (thickness of about 0.3 mm) 58 that can be deformed when the sealed elastic body 50 is pressed on the upper wall 50b. .

  According to the configuration described above, since the spherical elastic body 50 enclosed in the internal space S of the mouth portion 10 is larger than the shape of the internal space of the mouth portion, from the inner peripheral wall 10a of the mouth portion 10 in the center direction. The heading pressure P1 which acts is acting. When the crown body 50 is attached in this state, the inclined surface 55 and the upper wall 50b of the crown body 50 are locked in a state in which the elastic body 30 in a state of protruding from the opening of the mouth portion is pressed. The elastic body 30 is subjected to the pressing forces P2 and P3 directed toward the center from the inclined surface 55 and the upper wall 50b, respectively. In this case, the pressing force P2 ′ directed toward the center from the inclined surface 15 formed at the mouth and the bottom portion 10b is also applied to the elastic body 30 by the pressing forces P2 and P3 resulting from the deposition of the crown body 50. , P3 ′ is activated.

  And the elastic body which receives a press action as mentioned above comes to deform | transform along the inner space S of the opening | mouth part 10 and the inner surface of the attached crown body, as shown in FIG. Elastic deformation is performed so that no gap is generated between the inner surface and the inner surface of the crown.

  Thus, by forming the inclined surface 55 inclined with respect to the extraction direction on the inner surface of the crown body 50, when the crown body 50 is attached to the mouth portion 10, the elastic body extends over the entire circumference. Since 30 is directly pressed toward the center direction, there is no room for the elastic body 30 to spread toward the corner portion of the crown as in the prior art, and a uniform and strong pressing force can be applied to the elastic body. It becomes possible. That is, since the pressing force directly acts on the enclosed elastic body 30 from the upper side toward the center side, even if the spout shape is reduced as described above (small elastic body). 30), the contents are prevented from oozing out when the extraction needle is inserted and removed.

  In the configuration of the above-described embodiment, the inclined surface 15 having an inclination substantially parallel to the inclined surface 55 of the crown body 50 to be attached is formed from the inner peripheral wall 10a of the mouth portion 10 to the bottom portion 10b. The reaction force (P2 ′) of the pressure contact force acting on the elastic body 30 when the crown body 50 is attached is effectively generated. That is, since the uniform pressing force toward the central direction acts on the elastic body 30 effectively, leakage of the contents when the extraction needle is inserted and removed is more effectively prevented.

  Further, the opening edge of the mouth portion 10 is formed with a taper 16 which is thinned toward the opening end so that the inclined surface 55 of the crown body 50 to be attached is in contact with the mouth portion 10. A step portion or the like does not occur between the body and the pressing force is effectively prevented from becoming uneven.

  Further, since the thin wall portion 58 is formed on the top of the crown body 50, the thin wall portion 58 is deformed by elastic deformation of the elastic body 30 when the crown body 50 is attached. On the other hand, it is possible to visually check that an appropriate pressing force is acting.

  In the above-described configuration, the inclined surface 55 formed on the crown body 50 may be configured to be linear in a cross-sectional shape as illustrated, or may be configured to be curved. By forming the inclined surface in a curved shape in this way, it is possible to concentrate the pressure contact force acting on the inclined surface at substantially one point in the central direction of the enclosed elastic body 30, thereby giving a larger pressing force. It becomes possible. Further, in the above-described configuration, the elastic body 30 enclosed in the mouth portion 10 is larger than the internal space S, and when the crown body 50 is attached, the elastic body 30 may protrude from the crown body or spread to the corner portion. If it is configured so as not to exist, it is not limited to a spherical shape, and can be appropriately modified such as a cylindrical shape or a disk shape.

  FIG. 7 is a view showing a modification of the above-described crown body 50, where (a) is a cross-sectional view thereof, (b) is a cross-sectional view taken along the line BB of FIG. It is a figure which shows the positional relationship of the starting point position of a joint part, and an end point position.

  In the above-described embodiment, the engaging portion 51 formed on the crown body 50 is configured as a protruding portion that is formed to protrude at a predetermined interval. However, as shown in FIG. It is. Specifically, the engaging portion is a flange 60 that is formed on the inner surface of the crown body 50 so as to project over a predetermined angle (315 °) along the circumferential direction. The position F3 is formed so as to be offset in the axial direction. That is, the flange 60 is formed so as to protrude slightly from the inner peripheral surface of the crown body 50 in a spiral shape, and is not formed between the start point position F1 and the end point position F2.

  According to the engaging portion (flange 60) having such a shape, it is possible to integrally mold the crown with the mold, and it is possible to increase the engaging force with respect to the mouth portion of the crown. In this case, since the mold used for molding is pulled out from the inside of the crown while rotating, a taper 60a that gradually becomes thinner is formed in the terminal region of the flange 60 (between 270 ° and 315 °). It is preferable to keep it.

  8 and 9 are views showing a second embodiment of the present invention. FIG. 8 is a perspective view showing the overall configuration of the spout, and FIG. 9 is a sectional view thereof.

  In the above-described embodiment, the engaging portion 51 (flange 60) formed on the crown body 50 is formed to protrude from the inner peripheral surface of the crown body 50. However, as shown in the drawing, the engaging portion 51 is The outer peripheral surface may be formed so as to protrude outward at the lower end. Accordingly, the base of the mouth portion 10A of the spout body 5 is formed in a thick shape so as to bulge in the radial direction, and has a circumferential groove having a locking portion 18a around the mouth portion 10. 18 is formed. The crown body 50 is attached to the mouth portion 10 by engaging the engaging portion 51 with the locking portion 18 a while press-fitting the peripheral wall of the crown body 50 into the circumferential groove 18.

  According to such a configuration, by forming a notch or the like around the circumferential groove 18, it is possible to deform the periphery of the mouth when the crown 50 is inserted, and the crown 50 is attached to the mouth. It becomes possible to make it easy.

  Although the embodiment of the present invention has been described above, the present invention can be variously modified as follows, for example, in addition to the above-described embodiment.

  The internal space S defined by the mouth 10 described above may be configured to press the sealed elastic body 30 toward the center direction in which the extraction needle is inserted. The pressing method for can be modified as appropriate. In addition, the locking structure of the crown 50 with respect to the mouth 10, the shape of the mouth, and the like can be modified as appropriate. Of course, the present invention is not limited to the dimensions of the above-described embodiments, and can be applied to spouts larger than that.

It is a figure which shows 1st Embodiment of the spout which concerns on this invention, and is a perspective view which shows the whole structure of a spout. Sectional drawing of a main body. It is a figure which shows the crown attached to the opening | mouth part of a main body, (a) is a top view, (b) is sectional drawing along the AA line of Fig. (A). Sectional drawing which shows the state which enclosed the elastic body in the opening | mouth part, and the state which enclosed the elastic body and adhered the crown. The figure which shows the shape change before sealing after sealing an elastic body. Sectional drawing of the spout of the state which enclosed the elastic body. It is a figure which shows the modification of a crown, (a) is the sectional drawing, (b) is sectional drawing along the BB line of FIG. (A), (c) is the starting point position and end point of an engaging part The figure which shows the positional relationship of a position. It is a figure which shows 2nd Embodiment of the spout which concerns on this invention, and is a perspective view which shows the whole structure of a spout. Sectional drawing of the spout shown in FIG.

Explanation of symbols

1 Spout 5 Body 9 Communication hole (liquid channel)
10 mouth part 30 elastic body 50 crown body 55 inclined surface 58 thin-walled part S internal space

Claims (9)

The internal space in which the elastic body is enclosed is defined, and a mouth portion that communicates with the liquid passage for sucking out the contained material, and a pressing force is applied to the elastic body that is attached to the mouth portion and enclosed in the internal space. In a spout with a crown,
The elastic body enclosed in the mouth portion has a shape larger than the inner space of the mouth portion, and the inner surface of the crown body has a mouth portion that covers the entire circumference when the crown body is attached to the mouth portion. A spout characterized in that an inclined surface inclined with respect to the extraction direction is formed so as to press-contact the elastic body enclosed in the container.   The spout according to claim 1, wherein the inclined surface is curved.   The spout according to claim 1 or 2, wherein an inclined surface having an inclination substantially parallel to an inclined surface of the crown body to be deposited is formed from an inner wall to a bottom portion of the mouth portion.   The taper which is thinned toward the opening end is formed on the opening edge of the mouth portion so that the inclined surface formed on the crown to be attached is in contact with the opening. The spout according to any one of 1 to 3. The internal space in which the elastic body is enclosed is defined, and a mouth portion that communicates with the liquid passage for sucking out the contained material, and a pressing force is applied to the elastic body that is attached to the mouth portion and enclosed in the internal space. In a spout with a crown,
The elastic body enclosed in the mouth part has a shape larger than the height and inner diameter of the internal space of the mouth part,
When the crown is attached to the mouth, the inner surface of the crown and the inner surface of the mouth are in pressure contact with the entire surface without creating a gap with the surface of the sealed elastic body. Spout characterized by being formed into.   The spout according to any one of claims 1 to 5, wherein the mouth portion has a maximum inner diameter of 10 mm or less and a maximum internal space height of 5 mm or less.   The spout according to any one of claims 1 to 6, wherein a thin-walled portion having a thickness that can be deformed by an enclosed elastic body is formed at a top portion of the crown. The mouth portion is formed with a locking portion for locking the crown body, and the crown body is formed with an engaging portion for engaging the locking portion,
The engaging portion is a flange formed on the inner surface of the crown body so as to protrude over a predetermined angle along the circumferential direction, and the start point position and the end point position of the flange are offset in the axial direction. The spout according to any one of claims 1 to 7, characterized in that: The mouth portion is formed with a locking portion for locking the crown body, and the crown body is formed with an engaging portion for engaging the locking portion,
The spout according to any one of claims 1 to 7, wherein the engaging portion is a protrusion that is formed to protrude from the inner surface or the outer surface of the crown body at a predetermined interval along a circumferential direction.

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