JP6690137B2 - Mouth structure, nozzle - Google Patents

Description

  The present invention relates to a spout structure and a nozzle, and more particularly to a technique suitable for use in a spout structure capable of surely reopening / reclosing and flexibly responding to setting changes such as a moving speed of a fluid moving inside. .

BACKGROUND ART Conventionally, for example, a structure shown in Patent Document 1 is known as a resealable spout used in a container filled with a liquid or powder, a connecting member such as a spout, or an opening / closing member.
This is used, for example, in a container filled with a chemical for perm, chemicals such as liquid soap, shampoo, ink, paint, etc., liquid such as medicine, drinking water or powder of toner, food, detergent etc. .

  The connecting member of Patent Document 1 is actually composed of three components. A female member 1, a male member 2 that can be connected to the female member 1, and a plug 3. The body of the female member 1 can also be attached to the neck of a bottle or similar container, or to a ring-shaped holder fixed to a flexible bag. The latter form is well known as the so-called "bag-in-box" system. The female member 1 and the plug 3 are preferably manufactured as a single plastic member. The plug 3 is connected to the main body of the female member 1 by two flexible members 35.

  In this connecting member, the position of the collar 40 is changed by the head 23 of the male member 2 completely entering the space 33 of the plug 3, and the plug 3 closes the cavity 7. The plug 3 is completely free from the cavity 7 when is moved to the fully inserted position. Here, the lateral passages 17 of the male member 2 are located between the collar 40 of the plug 3 and the annular wall 8 of the female member 1 for fluid communication. Further, when the male member 2 is pulled from the cavity 7 of the female member 1 and the plug 3 enters the seat portion 9, the head portion 23 is pulled out from the plug 3 with a small force.

  In addition, when filling a high-concentration liquid that occurs in this connecting member, the filling speed cannot be made high and a long filling time is required, which lowers the productivity, and the contents include toner and the like. When using powder or high-viscosity liquid, there is a problem that the film may block the mouth due to the clogging (blocking) of the powder or insufficient fluidity near the discharge port, leaving the contents in the container. In order to solve the problem, a structure shown in Patent Document 2 in which a female member and a plug are separated is known.

Japanese Patent No. 3411270 JP, 2005-066184, A

  However, with such a configuration, if the reliability is to be achieved in sealing the female member with the plug or opening and closing the plug with the male member, the inner peripheral surface of the plug, which is the engaging portion, and the male member The dimensional accuracy demands on the head become very high. Therefore, there is a problem in that it is not realistic to use it for a disposable container or the like that does not cost much.

  Moreover, for example, when it is necessary to change the type of the fluid to be filled in the existing equipment when filling the fluid, or when the equipment is modified in response to other conditions, it is difficult to handle. There was a problem. In addition, since it is in such a state, once these connecting members are adopted in the filled product, it cannot be changed thereafter, and it cannot be changed according to the consumer's request. Was requested. At the same time, the cost is high due to the high required dimensional accuracy, and there has been a strong demand to reduce the cost.

  Furthermore, in the plug connected by the flexible member, when the plug is closed, the male member does not reach the desired position of the plug, the inserting direction of the male member or the plug is displaced, the plug cannot fit into the female member, However, there is a problem in that a problem such as the occurrence of a problem such as the occurrence of a problem such that a cap cannot be plugged and a desired closing operation cannot be performed may occur.

  The present invention has been made in view of the above circumstances, and is capable of performing reliable plugging, and reliable re-plugging, and facility modification is easy, and the structure corresponds to a plug structure having a simple structure. It is intended to achieve the object of being able to provide a nozzle at low cost without strict dimensional accuracy requirements.

The plug structure of the present invention includes an outer cylinder part having both ends open, a coaxially located inside the outer cylinder part, slidably inserted in the axial direction of the outer cylinder part, and the shaft from one end thereof. And an inner cylinder part to which a lid part that is spaced apart in the direction and is capable of closing the outer cylinder part opening is connected,
A direction in which the one end side of the inner tubular portion is in contact with the tip end portion of the nozzle inserted coaxially from the other end side inside the inner tubular portion to release the closure of the outer tubular portion by the lid portion. Is provided with a contact portion for pressing the inner cylinder portion,
The other end side of the inner tubular portion is engaged with the engaging outside of the nozzle coaxially inserted inside the inner tubular portion, and the inner portion is closed in the direction in which the lid portion closes the outer tubular portion. An engaging portion for moving the tubular portion is provided,
The above-described problem is solved by allowing the engaging portion to engage with the engaging portion provided outside the engaging portion of the nozzle and to release the engagement by elasticity.
In the plug structure of the present invention, the engaging portion is a claw portion that protrudes radially inward of the inner tubular portion, the claw portion extending along a side surface portion of the inner tubular portion, and It can be provided at the tip of the support portion that is elastically deformable in the radial direction of the tubular portion.
In the spout structure of the present invention, the contact portion is located at a position radially inward from a side surface portion of the inner cylinder portion, and is predetermined in an axial direction of the inner cylinder portion from a surface of the lid portion on the inner cylinder portion side. The positions spaced apart by a distance are preferably provided so as to project radially inward from the side surface portion of the inner cylindrical portion.
In the plug structure of the present invention, a lid support portion extending in the axial direction of the side surface portion of the inner tubular portion and connected to the inner tubular portion side surface of the lid portion is provided. Thus, it is desirable that both openings of the outer tubular portion can communicate with each other in a state where the lid portion is separated from the outer tubular portion.
In the plug structure of the present invention, the outer diameter of the peripheral surface of the lid portion can be set to be equal to the diameter of the expanded diameter portion inside the container of the outer tubular portion.
In the plug structure of the present invention, it is preferable that a seal portion is provided around the lid portion and / or the outer cylinder portion at a position where they abut each other.
In the plug structure of the present invention, on the side opposite to the side of the outer tubular portion closed by the lid portion, the engaging portion is radially outward in a state where the lid portion closes the outer tubular portion. It is possible to have a diameter-expanded portion whose diameter is expanded so as to be elastically deformable.
The outer circumferential surface of the inner tubular portion of the present invention, which is located at the other end side of the inner tubular portion, and is closer to the one end side than the engaging portion, and / or the outer tubular surface slidable with the outer circumferential surface of the inner tubular portion. A seal part may be provided around the inner peripheral surface of the part at a position where they abut each other.
The nozzle of the present invention is a nozzle that is inserted into the spout structure according to any one of the above to perform a closing / opening operation of the outer cylinder portion opening by the inner cylinder portion,
While having an outer diameter that is slidable by being inserted into the inner tubular portion, a tip abutting portion that comes into contact with the abutting portion and allows the inner tubular portion to move in the opening direction is provided at the tip thereof, An engagement outside capable of engaging with the engagement portion may be provided on the engagement outside.

The plug structure of the present invention includes an outer cylinder part having both ends open, a coaxially located inside the outer cylinder part, slidably inserted in the axial direction of the outer cylinder part, and the shaft from one end thereof. And an inner cylinder part to which a lid part that is spaced apart in the direction and is capable of closing the outer cylinder part opening is connected,
A direction in which the one end side of the inner tubular portion is in contact with the tip end portion of the nozzle inserted coaxially from the other end side inside the inner tubular portion to release the closure of the outer tubular portion by the lid portion. Is provided with a contact portion for pressing the inner cylinder portion,
The other end side of the inner tubular portion is engaged with the engaging outside of the nozzle coaxially inserted inside the inner tubular portion, and the inner portion is closed in the direction in which the lid portion closes the outer tubular portion. An engaging portion for moving the tubular portion is provided,
Since the engagement portion is engageable with the outside of the engagement provided on the outer side surface portion of the nozzle and is disengageable by elasticity, the nozzle can be moved from the other end side of the plug structure. By inserting into the inner cylinder part and moving toward the one end side, it is possible to press the abutting part with which the nozzle tip portion is in contact and move the inner cylinder part toward the one end side in the axial direction with respect to the outer cylinder part. When the contact between the lid portion and the outer tubular portion is released and at least one portion of the inner tubular portion in the circumferential direction is separated from the other end side surface of the lid portion, and the inside of the inner tubular portion, the outer portion Both openings of the tubular portion can communicate with each other. Further, by moving the nozzle inserted into the inside of the plug structure toward the other end side, the engaging portion engages with the outside of the engagement of the nozzle, and the inner tubular portion is integrated with the nozzle to the other end side. The opening of the outer tubular portion can be closed by moving toward the outer peripheral portion of the lid portion and abutting the outer periphery of the lid portion with the peripheral edge of the one end side opening of the outer tubular portion. In this way, the inner cylinder portion can be moved in the axial direction by the inserting and withdrawing operation of the nozzle, and the opening and closing of the plug structure can be surely repeated only by this reciprocating operation.
In addition, by providing the outer tube portion as a through hole in the container wall portion or the like, the plug can be reclosed.

  In the plug structure of the present invention, the engaging portion is a claw portion that protrudes radially inward of the inner tubular portion, the claw portion extending along a side surface portion of the inner tubular portion, and Since the claw portion engages with the outside of the engagement provided on the outer surface of the nozzle by being provided at the tip on the other end side of the support portion that is elastically deformable in the radial direction of the tubular portion, the operation in the axial direction of the nozzle It is possible to make the inner cylinder part follow the. Further, since the support portion is elastically deformed in the radial direction, the nozzle can be inserted into the inner cylinder portion and the nozzle can be removed even at a portion where the radial position of the claw portion has a large diameter dimension other than the outside of the engagement on the nozzle surface. Can be issued.

  In the plug structure of the present invention, the abutting portion is located at a radially inner position from the side surface portion of the inner tubular portion, and is separated from the other end side surface of the lid portion by a predetermined distance in the axial direction of the inner tubular portion. By being provided so as to project radially inward from the side surface portion of the inner tubular portion, by setting the axial distance between the lid portion and the abutting portion, it is projected so as to protrude from the outer tubular portion. The distance between the closed lid and the opening on the one end side of the outer cylinder is regulated, whereby the flow passage area and flow rate as the plug structure can be set to the viscosity flow rate regulated by the flow passage cross-sectional area and length of the inner cylinder. Together they can make a decision. In addition, since the lid is separated from one end of the inner cylinder, the end structure of the inner cylinder does not protrude from the outer cylinder except for the lid supporting portion described later, and the stopper structure is opened. You can

  In the plug structure of the present invention, a lid support portion that extends in the axial direction and is connected to the other end side surface of the lid portion is provided on the one end side of the side surface portion of the inner tubular portion, When the lid is separated from the outer tubular portion, both openings of the outer tubular portion can communicate with each other, so that the inner tubular portion slides along the axis of the outer tubular portion. By setting the axial dimension of the support portion, the distance between the lid portion protruding so as to protrude from the outer tubular portion and the opening on the one end side of the outer tubular portion is defined. The flow rate can be determined together with the viscous flow rate defined by the flow passage cross-sectional area and length of the inner cylinder. Further, since the lid portion is separated from the one end of the inner tubular portion, the stopper structure can be opened without projecting the end portion of the inner tubular portion from the outer tubular portion except the lid support portion. . Therefore, the outer peripheral surface of the inner tubular portion is not brought into contact with the fluid.

  In the plug structure of the present invention, the area of the portion of the inner cylindrical portion separated from the other end surface of the lid portion provided on the side surface portion has an area equal to or larger than the radial inner cross-sectional area of the inner cylindrical portion. By being set, the flow passage area and flow rate as the plug structure can be determined together with the viscous flow rate defined by the flow passage cross-sectional area and length of the inner cylinder. Further, when the lid supporting portion has a structure in which the side surface portion of the inner cylinder portion is extended, by making the axial dimension of the inner cylinder portion longer, the portion separated from the other end surface of the lid portion is opened. It can be provided as a shape.

  In the plug structure of the present invention, the lid portion and / or the outer cylinder portion is provided with a seal portion at a position where they come into contact with each other, so that an under-seal between the lid portion and the outer cylinder portion is achieved. It enables efficient operation and easy opening / closing operation, and can perform reliable stoppering.

The plug structure of the present invention is such that, on the other end side of the outer tubular portion, the diameter of the engaging portion is expanded so that the engaging portion can be elastically deformed radially outward when the lid portion closes the outer tubular portion. By having the expanded diameter portion, the inner cylinder is positioned at the axial position corresponding to the expanded diameter portion of the outer cylinder portion when the inner cylinder is positioned at the axial position where the lid portion closes the outer cylinder portion. Since the engagement portion of the tubular portion is located, when the nozzle is inserted and withdrawn, the support portion of the engagement portion can be elastically deformed to engage and release the claw portion. . Accordingly, the nozzle can be attached to and detached from the inner tubular portion at the position where the engagement portion of the inner tubular portion is located at the axial position corresponding to the expanded diameter portion of the outer tubular portion.
On the other hand, in the state in which the inner cylinder is positioned at the axial position where the lid portion closes the outer cylinder portion, the outer cylinder portion is on the one end side of the expanded diameter portion and is not expanded. Since the engaging portion of the inner tubular portion is located at the axial position corresponding to the tubular portion, it cannot be elastically deformed in the direction in which the support portion expands in diameter, and the tab portion of the engaging portion comes from outside the engagement of the nozzle. It does not come off. As a result, at the position where the engagement portion of the inner tubular portion is located at the axial position corresponding to the outer tubular portion that has not been expanded on the one end side of the expanded portion of the outer tubular portion, The nozzle cannot be attached or detached. Therefore, the axial movement of the inner cylinder portion can be reliably followed by the movement of the nozzle.

  In the inner cylinder portion of the present invention, the outer cylinder that is slidable on the outer peripheral surface of the side surface and / or the outer peripheral surface of the side surface at the one end side with respect to the engaging portion at the other end side position. The seal portion is provided around the inner peripheral surface of the portion at a position where they abut each other, so that the seal is broken from the sliding surface between the inner cylinder portion and the outer cylinder portion, and the seal is broken in the plug structure. Can be prevented.

The nozzle of the present invention is a nozzle that is inserted into the spout structure according to any one of the above to perform a closing / opening operation of the outer cylinder portion opening by the inner cylinder portion,
While having an outer diameter that is slidable by being inserted into the inner tubular portion, a tip abutting portion that comes into contact with the abutting portion and allows the inner tubular portion to move in the opening direction is provided at the tip thereof, Since the outside of the engaging portion is provided with the engaging outside that is engageable with the engaging portion, the opening and closing can be performed at the same time by simply inserting and removing, and even if this operation is repeated, It is possible to inexpensively use a spigot structure having a simple structure that does not deteriorate the seal and can be easily replaced. At the same time, the nozzle can be easily replaced, and a simple structure can be used at low cost.

  ADVANTAGE OF THE INVENTION According to this invention, while reliable plugging and reliable plugging can be performed, facility modification is easy and the nozzle corresponding to the mouth plug structure with a simple structure is required, and dimensional accuracy is not severe. It is possible to obtain the effect that it can be provided at low cost.

It is the perspective view (a) which shows the closed state and perspective view (b) which shows an open state in 1st Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the spout structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the spout structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the spout structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the spout structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the spout structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 1st Embodiment of the plug structure which concerns on this invention. It is a perspective view showing an engagement part in a 1st embodiment of a spout structure concerning the present invention. It is sectional drawing which shows the nozzle in 1st Embodiment of the plug structure which concerns on this invention. It is the perspective view (a) which shows the open state and perspective view (b) which shows a closed state in 2nd Embodiment of the plug structure which concerns on this invention. It is a top view which shows 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the stopper structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the stopper structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the stopper structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the stopper structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the stopper structure and nozzle which concern on this invention. It is sectional drawing which shows the opening / closing operation | movement in 2nd Embodiment of the plug structure which concerns on this invention. It is sectional drawing which shows 2nd Embodiment of the plug structure which concerns on this invention.

Hereinafter, a plug structure and a first embodiment of a nozzle according to the present invention will be described with reference to the drawings.
1 is a perspective view (a) showing a closed state and a perspective view (b) showing an open state in the present embodiment, and FIG. 2 is a cross-sectional view showing a plug structure in the present embodiment, and FIG. 11 is a cross-sectional view showing the operation of the plug structure, the nozzle or the plug structure in the present embodiment, FIG. 12 is a perspective view showing the inner cylinder part in the present embodiment, and FIG. It is sectional drawing which shows a nozzle in embodiment, and the code | symbol 10 is a plug structure in the figure.

  As shown in FIGS. 1 to 3, the spout structure 10 according to the present embodiment includes an outer tubular portion 20 and an inner tubular portion 30, and can be opened and closed by a nozzle N.

  In the spout structure 10 according to the present embodiment, as shown in FIGS. 1 to 3, the outer tubular portion 20 is formed into a cylindrical shape having both ends opened and penetrating the container 11. Inside the outer tubular portion 20, an inner tubular portion 30 is inserted coaxially with the outer tubular portion 20 and slidable in the axial direction A of the outer tubular portion 20.

  The inner tubular portion 30 is integrally provided with a lid portion 31 capable of closing the opening (opening) 21 of the outer tubular portion 20 so as to be separated from one end inside the outer tubular portion 20 of the container 11 in the axial direction A. It is connected.

  In the plug structure 10 according to the present embodiment, the outer tubular portion 20 and the inner tubular portion 30 serve as a closure (a closure member) and an opening member such as a spout that is closed by the outer tubular portion 20 and the inner tubular portion 30 after filling. Is available. Alternatively, it can be used as a connecting member with the nozzle N.

  The outer tubular portion 20 and the inner tubular portion 30 are manufactured as an integral plastic member by appropriate molding such as injection molding. Suitable plastics are thermoplastics, for example, those having flexibility such as polyethylene and polypropylene. The nozzle N is manufactured by using metal or plastic as a member, and can be used as a vacuum nozzle for vacuum degassing, a filling nozzle, a connecting portion for medicines such as drip.

As shown in FIGS. 1 to 3, the outer tubular portion 20 has, for example, a cylindrical shape, is fixed to an opening position of the container 11 filled with a liquid, powder, viscous fluid, and the like (container (bag body)). ) 11 is a conduction path that penetrates from the inside to the outside. The outer tubular portion 20 has a diameter dimension substantially equal to the outer diameter of the inner tubular portion 30 from the opening portion 21 at one end (inner end) to the opening portion (opening) 22 at the other end (outer end) and has substantially the same diameter. It has a cylindrical portion 20a.
In the outer tubular portion 20, an opening (opening) 21 on one end side is provided with a diameter-expanded portion 23 whose inner circumference is enlarged, and an opening (opening) 22 on the other end side thereof is provided with A diameter-expanded portion 24 having an enlarged inner circumference is provided.

  As shown in FIGS. 1 and 2, on the outer peripheral side of the outer cylinder portion 20, a base portion 20A fixed to the container (liquid body bag body) 11 by an appropriate fixing means such as fusion bonding or adhesion is provided on the opening 21 side. A first flange 20b that is provided and is in contact with the other end side of the base portion 20A and a second flange 20c above the first flange 20b are provided. The outer periphery of the other end side of the second flange 20c is a cap (not shown) for sealing after the filling process. 20d of the spiral which screwed together is provided intermittently. A rib 20e that abuts when the cap (not shown) is tightened and a plurality of protrusions 20f that engage with the cap (not shown) are provided on the outer periphery of the outer tubular portion 20 on the one end side of the spiral protrusion 20d. There is.

  As shown in FIGS. 1 to 3, an enlarged diameter portion having an inner diameter corresponding to the outer diameter of the lid portion 31 is provided in the opening portion 21 of the outer tubular portion 20 so that the lid portion 31 can be closely attached and sealed. 23 is provided, and on the other end side of the expanded diameter portion 23, an annular closing surface 25 that extends in the radial direction and contacts the surface of the lid portion 31 is provided over the entire circumference. The closing surface 25 may be inclined so as to reduce its diameter from the opening 21 toward the opening 22 (from the inner end side to the outer end side). The inner peripheral surface of the expanded diameter portion 23 is provided with a seal portion 23a which is a concave portion or the like corresponding to the circumferentially protruding protrusion for sealing which is an O-ring or the like of the lid portion 31.

As shown in FIG. 1B, FIG. 2, and FIG. 12, the inner tubular portion 30 is assumed to have, for example, a cylindrical passage portion 30 a, and the passage portion 30 a is coaxial with the inner position of the outer tubular portion 10. And the passage portion 30a forms an inner surface of a conduction path that penetrates from the inside to the outside of the bag body 11.
The inner cylindrical portion 30 is provided with two lid supporting portions 32 and 32 having rigidity at the end on one end side of the passage portion 30a having a cylindrical shape, and the lid portion 31 is provided via the lid supporting portions 32 and 32. Are connected as a unit.

  Even when the inner tubular portion 30 is slid with respect to the outer tubular portion 20 at a side surface outer peripheral position that is closer to the tip (one end) 30b side than the engaging portion 36 at the rearward (other end) 30c side position. A seal portion 30f that maintains hermeticity is provided around the seal portion 30f. The seal portion 30f may be provided on the inner peripheral surface side of the outer tubular portion 20.

  As shown in FIG. 1B, FIG. 2 and FIG. 12, the lid portion 31 is attachable / detachable to / from the enlarged diameter portion 23 of the opening portion 21 which is one end of the conduction path existing inside the bag body 11 of the outer tubular portion 20. A seal projection 31b, which is an O-ring or the like corresponding to the seal portion 23a, is circumferentially provided on the peripheral surface 31a thereof. Further, on the other end side (outside) of the peripheral surface 31a, a closing surface 31c that is inclined corresponding to the closing surface 25 is provided.

  As shown in FIG. 1B, FIG. 2 and FIG. 12, two lid support parts 32 are extended at the opposite positions to the tip 30b on one end side (inner side) of the cylindrical passage part 30a. The shape of the cylinder in the passage portion 30a is partially extended in the axial direction. The lid supporting portions 32, 32 have substantially even width dimensions in the axial direction, and the width dimension, that is, the circumferential dimension of the passage portion 30a is as small as possible in order to increase the internal flow rate. Can be set as:

  Further, in the passage portion 30a, as shown in FIG. 1 (b), FIG. 2, and FIG. 12, the tip end 30b and the other end side (outer side) surface 31d of the lid portion 31 are the lid support portions 32, 32 portions. Other than the above, it is formed so as to be separated in the axial direction, and the space between the tip end 30b of these passage portions 30a and the surface 31d of the lid portion 31 is an opening portion to the inside of the conduction path that penetrates from the inside to the outside of the bag body 11. Has become. Therefore, by setting the distance dimension between the tip 30b of the passage portion 30a and the surface 31d of the lid portion 31 and the width dimension of the lid support portions 32, 32, the value of the inner cross-sectional area of the passage portion 30a is set to the maximum value. It is possible to set the flow path cross section.

  In the passage portion 30a, as shown in FIG. 1 (b), FIG. 2, and FIG. 12, a cylindrical passage portion is provided in the vicinity of the tip end 30b on the inner side thereof, at the base end positions of the respective lid support portions 32, 32. Abutting portions 33, 33 protruding from the inner surface of 30a toward the center in the radial direction are provided.

  As shown in FIG. 1B, FIG. 2, and FIG. 12, the abutting portions 33, 33 are arranged at the center positions in the width direction of the lid supporting portions 32, 32 which are in the circumferential direction of the passage portion 30a, and are in the axial direction. It is formed as a ridge extending from the vicinity of the tip of the passage portion 30a to the lid portion 31. On the other end side (outside) of the contact portions 33, 33, a contact surface 33a extending in a radial direction orthogonal to the axial direction of the passage portion 30a for contact with a tip contact portion N1 of a nozzle N described later. Are provided respectively.

  The contact portion 33 secures a fluid flow passage cross section as long as it can sufficiently transmit a pressing force in the axial direction to the inner tubular portion 30 in a state where the tip end contact portion N1 of the nozzle N is in contact with the contact surface 33a. In order to do so, it is better to be as small as possible. Further, in order to increase the strength of the lid support portion 32, the ridge extending axially from the vicinity of the tip 30b of the passage portion 30a to the lid portion 31 is used, but only the vicinity of the contact surface 33a protrudes toward the radial center. It is also possible to Further, the length of the contact portion 33 toward the center in the radial direction, that is, the protruding dimension from the inner surface of the passage portion 30a to the central axis side is set to be substantially the same as the wall thickness dimension of the nozzle N tip contact portion N1. You can As a result, the cross section of the fluid channel can be made sufficiently large.

  Furthermore, the width dimension of the lid support portions 32, 32 is reduced so that the contact portion 33 extending from the vicinity of the tip 30b of the passage portion 30a to the lid portion 31 in the axial direction is made approximately the same as the diameter dimension of the passage portion 30a. It is also possible to do so. In this case, for example, the width dimension of the lid support portion 32 is set to be approximately the same as the wall thickness of the passage portion 30a, and the radial dimension of each of the facing contact portions 33 is extended to the central axis of the inner tubular portion 30. Alternatively, the openings of the tip end 30b of the passage portion 30a and the surface 31d of the lid portion 31 may be divided into two by the contact portion 33 serving as a central wall.

  The rear portion 30c on the other end side (outer side) of the inner tubular portion 30 is formed so as to be a surface orthogonal to the axial direction of the inner tubular portion 30, as shown in FIGS. After that, the lid 30 is engaged with the engaging outside N6 of the nozzle N coaxially inserted inside the inner tubular portion 30 so that the lid portion 31 closes the opening 21 of the outer tubular portion 20. An engagement portion 36 for moving the inner tubular portion 30 in the axial direction is provided.

  As shown in FIGS. 2 and 12, the one engaging portion 36 is provided on the inner peripheral surface of the inner tubular portion 30 near the rear portion 30c, and has two parallel portions when viewed in the axial direction. As a straight line, the two cuts 36a, 36b provided at the same radial distance from the center of the passage portion 30a form the support portion 35 at the portion where the rear portion 30c is separated in the circumferential direction of the inner tubular portion 30. There is. A claw portion 37 protruding inward in the radial direction of the inner tubular portion 30 is provided at the tip of the rear portion 30c of the support portion 35 between the notches 36a and 36b.

As shown in FIGS. 2 and 12, one claw portion 37 extends along a portion of the side surface portion of the passage portion 30a between the notches 36a and 36b and is elastic in the radial direction of the passage portion 30a. The deformable support portion 35 is provided at the inner end of the rear end portion 30c at the front end 35b.
The support portion 35 is elastically deformable such that the tip end side 35b moves in the radial direction of the passage portion 30a with a base end 35a on one end side which is an axial end position of the notches 36a, 36b as a fulcrum.

  Similarly, as shown in FIGS. 2 and 12, the engaging portion 36 facing each other is located at a position that faces the notches 36a and 36b in the radial direction and is axially viewed from the notches 36a and 36b. The portions separated in the circumferential direction of the rear portion 30c by the cuts 36c and 36d formed in parallel with each other are used as the support portion 35. At the tip of the rear end portion 30c of the support portion 35, which is located between the cuts 36c and 36d, a claw portion 37 that protrudes radially inward of the rear portion 30c of the inner tubular portion 30 is provided.

As shown in FIGS. 2 and 12, the facing claw portion 37 extends along the portion of the side surface portion of the passage portion 30a between the cuts 36c and 36d and is elastic in the radial direction of the passage portion 30a. The deformable support portion 35 is provided at the inner end of the rear end portion 30c at the front end 35b.
The support portion 35 is elastically deformable so that the tip end side 35b moves in the radial direction of the passage portion 30a with a base end 35a on one end side which is an axial end position of the notches 36c and 36d as a fulcrum.

  As shown in FIGS. 4 and 12, the facing engaging portions 36, 36 are engageable with an engaging outside N6 provided on the outer surface of the nozzle N, which will be described later, and the supporting portion 35 has The engagement can be released by elasticity. As will be described later, the two supporting portions 35 and 35 at the facing position receive the action force by the nozzle N inserted into the inner tubular portion 30 so as to expand the diameter outward in the axial direction at the same time. When 35b elastically deforms so as to move to the outside in the radial direction of the passage portion 30a, and the claw portion 37 and the claw portion 37 both pass over the engaging outside N6, the elasticity of the support portion 35 causes the radial direction of the passage portion 30a. Restored to move inward.

  In order to enable this operation, the opposing claw portion 37 and the radial distance t2 between the claw portions 37 are contracted outside the step serving as the engaging outside N6 in the nozzle N, as shown in FIG. It is set to be equal to the diameter dimension n1 of the diameter portion N3, and the radial distance t1 between the opposing support portions 35 and the support portion 35 is, as shown in FIG. Can be set to be equal to the diameter dimension n2 of the enlarged diameter portion N2 which is the outer side surface of the.

  As a result, when the engaging portion 36 having the original diameter dimension is engaged with the engaging outside N6 of the nozzle N and moves outward in the axial direction, the nozzle N and the inner cylinder portion 30 are integrated. As it moves, it becomes a trapped state.

  In addition, as shown in FIGS. 4, 5, and 12B, the operation of expanding the diameter of the support portion 35 to the outside in the axial direction is performed in the axial direction in which the support portion 35 corresponds to the diameter expansion portion 24 of the outer tubular portion 20. It is possible only when the axial position of the inner cylinder portion 30 is set so as to be the position. At the axial position where the inner tubular portion 30 enters one end side (inner side) from that, the support portion 35 abuts the tubular portion 20a of the outer tubular portion 20, and the claw portions 37, 37 expand in diameter. You cannot move in the direction. As a result, it is possible to prevent the engagement portion 36 from being disengaged from the engagement outside N6 of the nozzle N, and only the nozzle N is moved outward in the axial direction, and the nozzle N and the inner cylinder portion 30 are integrally moved. It can be maintained.

As shown in FIGS. 3, 4, 6, 8, 10, 12, and 13 (a), the nozzle N according to the present embodiment is generally slidable by being inserted into the inner tubular portion 30. It has a cylindrical shape, and has an outer diameter dimension that is substantially equal to the inner diameter of the passage portion 30a in the inner tubular portion 30.
As shown in FIGS. 3 and 13A, the nozzle N is a tip abutting portion N1 that abuts the abutting portion 33 to move the inner tubular portion 30 in the opening direction, and the outside thereof. The surface portion is provided with an engaging outside N6 capable of engaging with the engaging portion.

  As shown in FIGS. 3 and 13A, the engaging outside N6 can be a step provided on the outer peripheral surface of the nozzle N so that the claw portion 37 is engaged. Also, the tip end abutting portion N1 side is the enlarged diameter portion N2, and the opposite side of the engaging outside N6 from the tip end abutting portion N1 is the reduced diameter portion N3.

  In the nozzle N, the diameter dimension n1 of the reduced diameter portion N3 on the outer side of the step serving as the engaging outer portion N6 is set such that the diameter dimension n1 of the reduced diameter portion N1 is opposite to that of the opposed nail portion 37 and the nail portion 37 in the inner tubular portion 30. It can be set to be equal to the radial distance t2 between them, and at the expanded portion N2 which is the outer surface of the tip abutting portion N1, its diameter dimension n2 is as shown in FIG. 13 (a). , Can be set to be equal to the radial direction distance t1 between the supporting portions 35 facing each other.

  Further, in the nozzle N, as shown in FIG. 13A, instead of the configuration in which the stepped portion in which the enlarged diameter portion N2 which is the outer surface of the tip abutting portion N1 becomes the engaging outside N6 is continuous, As shown in b), the enlarged diameter portion N4 near the tip abutting portion N1 is a projecting ridge, and a reduced diameter portion N5 is provided on the engagement outer side N6 side thereof. It is also possible to provide an enlarged diameter portion N7 which is a ridge of No. 3 and form an outer surface continuous with the reduced diameter portion N3. In this case, it is possible to reduce the friction by reducing the surface area of the nozzle N that contacts the inner surface of the passage portion 30a.

Here, in the reduced diameter portion N5, as shown in FIG. 13B, the diameter dimension n1 is set to be equal to the facing claw portion 37 in the inner tubular portion 30 and the radial distance t2 between the claw portions 37. The diameters n2 of the expanded diameter portion N4 and the expanded diameter portion N7 may be set to be equal to the opposing support portion 35 and the radial distance t1 between the support portions 35. it can.
Further, in the structure shown in FIG. 13B, it is also possible to adopt a structure in which there is no expanded diameter portion N4 and the reduced diameter portion N5 is continuous up to the tip abutting portion N1.
Further, as shown in FIG. 13C, the insertion defining portion N8 side of the reduced diameter portion N3 is an enlarged diameter portion N9 having a diameter dimension n2, and the reduced diameter portion N3 portion is provided in the circumferential direction. It is also possible to use a structure having a circumferential groove. With this configuration, since the groove of the reduced diameter portion N3 is only provided around the nozzle, the nozzle N can be easily manufactured.

The radial distance t1 between the support portions 35 and 35 is set to be equal to the radial distance t1 in the passage portion 30a.
The outer dimension n2 of the enlarged diameter portion N2, the enlarged diameter portion N4, and the enlarged diameter portion N7 is set to be substantially equal to the inner diameter dimension of the cylindrical portion 20a of the outer tubular portion 20.

  In the nozzle N, as shown in FIGS. 3 and 13, the axial dimension between the tip abutting portion N1 and the engaging outside N6 is the axial distance between the claw portion 37 of the inner tubular portion 30 and the abutting surface 33a. It is set to be smaller than.

  Outside the engaging outside N6 of the nozzle N, the insertion distance of the nozzle N is regulated by abutting the opening 22 of the outer tubular portion 20, and the inner tubular portion 30 that moves integrally in the axial direction is provided inside. An insertion defining portion N8, which defines the moving distance, is provided so as to project on the outer peripheral surface. The radial dimension of the insertion defining portion N8 may be set to be larger than the radial dimension of the opening 22 of the outer tubular portion 20.

  The operation of the spout structure and the nozzle according to this embodiment will be described below.

In the present embodiment, first, the description will be started from the closed state of the spout structure 10, as shown in FIG. 2.
In the opening portion 21 of the outer tubular portion 20 in this state, as shown in FIG. 2, the peripheral surface 31a of the lid portion 31 is in close contact with the expanded diameter portion 23, and the closing surface 31c is in close contact with the closing surface 25. It is sealed. At this time, in the enlarged diameter portion 23 and the peripheral surface 31a, the seal projection 31b cooperates with the seal portion 23a to seal the opening 21. As a result, the inside of the bag body 11 is in a sealed state.

  For example, in order to fill the sealed bag 11 with a fluid, the nozzle N is inserted into the plug structure 10 as shown in FIG. Then, the enlarged diameter portion N2, which is the outer side surface of the tip abutting portion N1, passes through the claw portion 37 of the inner tubular portion 30 and is inserted into the passage portion 30a.

Next, as shown in FIGS. 4 and 5, the claw portion 37 of the inner tubular portion 30 is pressed in the direction in which the distance increases in the radial direction by the enlarged diameter portion N2 inserted in the passage portion 30a. Here, between the tip of the claw portion 37 and the tip of the claw portion 37, which are opposed to each other having the radial dimension n1, is set by the enlarged diameter portion N2 set as the radial dimension n2 which is larger than the radial dimension n1. The radial distance between the portion 37 and the claw portion 37 is increased. At this time, the support portions 35, 35 are elastically deformed from the base portion 35a, so that the radial distance between the claw portion 37 and the claw portion 37 is expanded to an interval equal to the dimension n2.
In addition, the support portions 35 and 35 provided with the claw portion 37 and the claw portion 37 whose radial distance is expanded can be deformed by the enlarged diameter portion 24 of the outer tubular portion 20 being escaped. The joint outer portion N6 can move inward in the axial direction A beyond the position of the claw portion 37.

Next, as shown in FIGS. 6 and 7, when the nozzle N is inserted in the axial direction A to a position where the step of the engaging outside N6 exceeds the claw portion 37, the claw portion 37 opposed by the elasticity of the support portion 35 is formed. And the tip of the claw portion 37 move toward the axial center side, and the distance between the claw portions 37.37 is reduced to the radial dimension n1 of the reduced diameter portion N3.
As a result, the claw portion 37 is engaged with the stepped portion of the engaging outside N6 to be in an engaged state.

Next, as shown in FIGS. 6 and 7, the tip contact portion N1 of the nozzle N contacts the contact surface 33a of the inner tubular portion 30 and presses the contact portion 33 in the axial direction A. As a result, the inner tubular portion 30 is pressed in the axial direction A and overcomes the locking force between the peripheral surface 31a of the lid portion 31 and the enlarged diameter portion 23 and between the seal ridge 31b and the seal portion 23a. Then, the lid portion 30 moves from the enlarged diameter portion 23 in the axial direction A.
As a result, the seal of the opening 21 is released, and the inside of the bag 11 and the inside of the tube of the nozzle N are in communication with each other.

  Further, as shown in FIGS. 8 and 9, the tip abutting portion N1 of the nozzle N continues to press the abutting portion 33 of the inner tubular portion 30 in the axial direction A, and the inner tubular portion 30 in the axial direction A. Continue to move to. Then, the nozzle N moves in the axial direction A up to the insertion distance of the nozzle N defined by the contact of the insertion defining portion N8 with the opening 22 of the outer tubular portion 20, and the inner cylinder extends in the axial direction A integrally with the nozzle N. The part 30 moves to the inside of the bag body 11. As a result, the lid portion 31 supported by the lid supporting portions 32 and 32 projects toward the inside of the bag body 11 and fully opens the opening between the tip 30b of the passage portion 30a and the lid portion 31 surface 31d.

At this time, since the contact portion 33 projects toward the central axis direction only in the radial direction distance corresponding to the wall thickness of the nozzle N with respect to the inner diameter of the passage portion 30a, the abutment portion 33 has a cross-sectional area of the internal flow passage of the nozzle N. In contrast, the opening cross-sectional area between the tip 30b of the passage portion 30a and the surface 31d of the lid portion 31 does not decrease, and it is possible to maintain a substantially equal cross-sectional area.
In this open state, as shown by arrows P and F in FIG. 8, the fluid discharged from the nozzle N is filled inside the bag body 11.

  After the bag 11 is filled with the fluid, the nozzle N is moved toward the outside in the axial direction as shown by an arrow B in the drawing as shown in FIG. N1 is separated from the contact surface 33a of the inner tubular portion 30. Next, the nozzle N is moved outward in the axial direction as indicated by arrow B in the figure, whereby the step of the engaging outside N6 of the nozzle N abuts and engages with the claw portion 37. In this state, the nozzle N is further moved toward the outside in the axial direction as shown by the arrow B in the figure, so that the inner cylinder engaged with the engaging outside N6 of the nozzle N by the claw portion 37. The portion 30 moves integrally with the nozzle N toward the axially outer side, as indicated by the arrow B in the figure.

  Further, by moving the nozzle N toward the outside in the axial direction as indicated by arrow B in the figure, the lid 31 is inserted into the opening 21 as shown in FIG. As a result, the peripheral surface 31 a of the lid 31 comes into close contact with the expanded diameter portion 23, and the closing surface 31 c comes into close contact with the closing surface 25. At this time, in the enlarged diameter portion 23 and the peripheral surface 31a, the seal protrusion 31b cooperates with the seal portion 23a to seal the opening 21. As a result, the inside of the bag 11 is sealed by the lid 31.

  In the closed state, the claw portion 37 and the support portions 35, 35 are located at the expanded diameter portion 24 of the outer tubular portion 20. In this state, further, by moving the nozzle N toward the outer side in the axial direction as indicated by an arrow B in the figure, the support portions 35 and 35 provided with the claw portion 37 and the claw portion 37 are It can be deformed by being located in the enlarged diameter portion 24 of the outer tubular portion 20 which can be escaped with respect to the expansion of the directional dimension, and the enlarged diameter portion N2 is the radial distance between the claw portion 37 and the claw portion 37. And the engaging outside N6 moves outward beyond the position of the claw portion 37 in the axial direction A. Then, as shown in FIG. 11, the nozzle N is removed from the spout height diagram 10.

In the plug structure 10 and the nozzle N in the present embodiment, the nozzle N is inserted from the outside of the bag body 11 into the inner tubular portion 30 of the plug structure 10 and moved in the direction of arrow A toward the inside of the bag body 11. Thus, the contact portion 33 with which the nozzle N tip contact portion N1 is in contact is pressed to move the inner tubular portion 30 axially inward with respect to the outer tubular portion 20, so that the lid portion 31 and the outer tubular portion 20 The seal with the opening 21 is released, and the openings 21 and 22 of the outer tubular portion 20 are in an open state in which they can communicate with each other through the one end 30a of the inner tubular portion 30 and the surface 31d of the lid portion 31. Further, by moving the nozzle N inserted inside the plug structure 10 toward the outside in the direction of the arrow B, the engaging portion 36 engages with the engaging outside N6 of the nozzle N, and the inner tubular portion 30 moves. A closed state in which the opening 21 of the outer tubular portion 20 is closed by the outer peripheral surface 31a of the lid portion 31 contacting the opening peripheral edge 25 of the outer tubular portion 20 by moving in the direction of the arrow B toward the outside integrally with the nozzle N. Becomes In this way, the inner cylinder portion 30 can be moved in the axial direction by the inserting and withdrawing operation of the nozzle N, and the opening and closing of the plug structure 10 can be surely repeated only by this reciprocating operation. Becomes
In addition, by providing the outer tubular portion 20 as a through hole in the wall portion of the container 11 or the like, the plug can be reclosed.

A second embodiment of a spout structure and a nozzle according to the present invention will be described below with reference to the drawings.
FIG. 14 is a perspective view (a) showing a closed state and a perspective view (b) showing an open state in the present embodiment, and FIG. 15 is a plan view showing a plug structure in the present embodiment, and FIG. FIG. 17 is an exploded cross-sectional view showing the plug structure in the present embodiment, FIG. 17 is a cross-sectional view showing the plug structure in the present embodiment, and FIGS. 17 to 26 are plug structures in the present embodiment, It is sectional drawing which shows operation | movement of a nozzle or a stopper structure, and the code | symbol 40 is a stopper structure in the figure.

  As shown in FIGS. 14 to 17, the spout structure 40 according to the present embodiment has an outer tubular portion 20 and an inner tubular portion 30, and can be opened and closed by a nozzle N.

  In the plug structure 40 according to the present embodiment, as shown in FIGS. 14 to 17, the outer tubular portion 20 is formed in a cylindrical shape having both ends opened and penetrating the container wall 11. Inside the outer tubular portion 20, an inner tubular portion 30 is inserted coaxially with the outer tubular portion 20 and slidable in the axial direction A of the outer tubular portion 20.

  A lid portion 31 capable of closing an opening (opening) 21 of the outer tubular portion 20 is integrated with the inner tubular portion 30 so as to be separated from the inner wall end of the outer tubular portion 20 in the container wall 11 in the axial direction A. Connected as.

  In the spout structure 40 according to the present embodiment, the outer tubular portion 20 and the inner tubular portion 30 serve as a closure (a closure member) and an opening member such as a spout that is closed by the outer tubular portion 20 and the inner tubular portion 30 after filling. Is available. Alternatively, it can be used as a connecting member with the nozzle N.

  The outer tubular portion 20 and the inner tubular portion 30 are manufactured as an integral plastic member by appropriate molding such as injection molding. Suitable plastics are thermoplastics, for example, those having flexibility such as polyethylene and polypropylene. The nozzle N is manufactured by using metal or plastic as a member, and can be used as a vacuum nozzle for vacuum degassing, a filling nozzle, a connecting portion for medicines such as drip.

As shown in FIGS. 14 to 17, the outer tubular portion 20 has, for example, a cylindrical shape, is provided at an opening position of the bag body 11 filled with a liquid, powder, viscous fluid, and the like, and also has a bag body (container). ) 11 is a conduction path that penetrates from the inside to the outside.
The outer tube portion 20 is a cap screwed to the conduction path 41 of the bag body 11. For example, after filling the inside of the bag body 11 with a fluid, the outer cylinder portion 20 is screwed to close the conduction path 41.
The plug structure 40 according to the present embodiment can be attached to, for example, the bag body 11 which is an ink cartridge of a printer, and can be reclosed and reopened so that it can be attached to the nozzle N attached to the printer. You can do it.

The outer tubular portion 20 has a diameter dimension substantially equal to the outer diameter of the inner tubular portion 30 from the opening portion 21 at one end (inner end) to the opening portion (opening) 22 at the other end (outer end) and has substantially the same diameter. It has a cylindrical portion 20a.
In the outer tubular portion 20, an opening (opening) 21 on one end side is provided with a diameter-expanded portion 23 whose inner circumference is enlarged, and an opening (opening) 22 on the other end side thereof is provided with A diameter-expanded portion 24 having an enlarged inner circumference is provided.

  As shown in FIGS. 14 to 16, on the side of the opening 22 of the outer tubular portion 20, a folded-back portion 20g which is a cap and is continuous with the flange 23a is provided, and a thread 20h is provided inside thereof. There is.

The conduction path 41 is formed as a part of a substantially cylindrical spout, and the outer cylindrical portion 20 is coaxially inserted into the spout and is screwed to the outside.
On the outer peripheral side of the conduction path 41, as shown in FIGS. 14 to 16, a base portion 40a fixed to the liquid body bag body 11 by an appropriate fixing means such as fusion bonding or adhesion is provided on the inner side. A first flange 40b in contact with the other end side and a second flange 40c above the first flange 40b are provided, and the outer circumference of the other end side of the second flange 40c serves as a cap for sealing after the filling process. Spiral protrusions 40d for screwing the screw threads 20h are provided intermittently. A rib 40e that abuts when the outer cylindrical portion 20 that is a cap is tightened, and a plurality of convex portions 40f that engage with the cap (not shown) are provided on the outer periphery of the conductive path 41 that is inside the spiral protrusion 40d. Has been.

  As shown in FIGS. 14 to 17, in the opening 21 of the outer tubular portion 20, a diameter-expanded portion having an inner diameter dimension corresponding to the outer diameter of the lid portion 31 so that the lid portion 31 can be closely attached and sealed. 23 is provided, and on the other end side of the expanded diameter portion 23, an annular closing surface 25 that extends in the radial direction and contacts the surface of the lid portion 31 is provided over the entire circumference. The closing surface 25 may be inclined so as to reduce its diameter from the opening 21 toward the opening 22 (from the inner end side to the outer end side). The inner peripheral surface of the expanded diameter portion 23 is provided with a seal portion 23a which is a concave portion or the like corresponding to the circumferentially protruding protrusion for sealing which is an O-ring or the like of the lid portion 31.

As shown in FIGS. 14B, 15, and 16, the inner tubular portion 30 is assumed to have, for example, a cylindrical passage portion 30 a, and this passage portion 30 a is coaxial with the inner position of the outer tubular portion 10. And the passage portion 30a forms an inner surface of a conduction path that penetrates from the inside to the outside of the bag body 11.
The inner cylindrical portion 30 is provided with two lid supporting portions 32 and 32 having rigidity at the end on one end side of the passage portion 30a having a cylindrical shape, and the lid portion 31 is provided via the lid supporting portions 32 and 32. Are connected as a unit.

  Even when the inner tubular portion 30 is slid with respect to the outer tubular portion 20 at a side surface outer peripheral position that is closer to the tip (one end) 30b side than the engaging portion 36 at the rearward (other end) 30c side position. A seal portion 30f that maintains hermeticity is provided around the seal portion 30f. The seal portion 30f may be provided on the inner peripheral surface side of the outer tubular portion 20.

  As shown in FIGS. 14B, 15 and 16, the lid portion 31 is detachable from the enlarged diameter portion 23 of the opening portion 21 which is one end of the conduction path existing inside the bag body 11 of the outer tubular portion 20. A seal projection 31b, which is an O-ring or the like corresponding to the seal portion 23a, is circumferentially provided on the peripheral surface 31a thereof. Further, on the other end side (outside) of the peripheral surface 31a, a closing surface 31c that is inclined corresponding to the closing surface 25 is provided.

  As shown in FIG. 14B, FIG. 15 and FIG. 16, two lid supporting portions 32, 32 are provided at opposite positions to a tip 30b on one end side (inner side) of the passage portion 30a having a cylindrical shape. The shape of the cylinder in the passage portion 30a is partially extended in the axial direction. The lid supporting portions 32, 32 have substantially even width dimensions in the axial direction, and the width dimension, that is, the circumferential dimension of the passage portion 30a is as small as possible in order to increase the internal flow rate. Can be set as:

  Further, in the passage portion 30a, as shown in FIGS. 14 (b), 15, and 16, the tip 30b and the other end (outer) surface 31d of the lid portion 31 are the lid support portions 32, 32 portions. Other than the above, it is formed so as to be separated in the axial direction, and the space between the tip end 30b of these passage portions 30a and the surface 31d of the lid portion 31 is an opening portion to the inside of the conduction path that penetrates from the inside to the outside of the bag body 11. Has become. Therefore, by setting the distance dimension between the tip 30b of the passage portion 30a and the surface 31d of the lid portion 31 and the width dimension of the lid support portions 32, 32, the value of the inner cross-sectional area of the passage portion 30a is set to the maximum value. It is possible to set the flow path cross section.

  In the passage portion 30a, as shown in FIG. 14 (b), FIG. 15 and FIG. 16, a cylindrical passage portion is provided near the tip 30b on the inner side thereof and at the base end positions of the respective lid support portions 32. Abutting portions 33, 33 protruding from the inner surface of 30a toward the center in the radial direction are provided.

  As shown in FIGS. 14 (b), 15 and 16, the contact portions 33, 33 are arranged at the center positions in the width direction of the lid support portions 32, 32 which are in the circumferential direction of the passage portion 30a, and are in the axial direction. It is formed as a ridge extending from the vicinity of the tip of the passage portion 30a to the lid portion 31. On the other end side (outside) of the contact portions 33, 33, a contact surface 33a extending in a radial direction orthogonal to the axial direction of the passage portion 30a for contact with a tip contact portion N1 of a nozzle N described later. Are provided respectively.

  The contact portion 33 secures a fluid flow passage cross section as long as it can sufficiently transmit a pressing force in the axial direction to the inner tubular portion 30 in a state where the tip end contact portion N1 of the nozzle N is in contact with the contact surface 33a. In order to do so, it is better to be as small as possible. Further, in order to increase the strength of the lid support portion 32, the ridge extending axially from the vicinity of the tip 30b of the passage portion 30a to the lid portion 31 is used, but only the vicinity of the contact surface 33a protrudes toward the radial center. It is also possible to Further, the length of the contact portion 33 toward the center in the radial direction, that is, the protruding dimension from the inner surface of the passage portion 30a to the central axis side is set to be substantially the same as the wall thickness dimension of the nozzle N tip contact portion N1. You can As a result, the cross section of the fluid channel can be made sufficiently large.

  Furthermore, the width dimension of the lid support portions 32, 32 is reduced so that the contact portion 33 extending from the vicinity of the tip 30b of the passage portion 30a to the lid portion 31 in the axial direction is made approximately the same as the diameter dimension of the passage portion 30a. It is also possible to do so. In this case, for example, the width dimension of the lid support portion 32 is set to be approximately the same as the wall thickness of the passage portion 30a, and the radial dimension of each of the facing contact portions 33 is extended to the central axis of the inner tubular portion 30. Alternatively, the openings of the tip end 30b of the passage portion 30a and the surface 31d of the lid portion 31 may be divided into two by the contact portion 33 serving as a central wall.

  The rear portion 30c on the other end side (outside) of the inner tubular portion 30 is formed so as to be a surface orthogonal to the axial direction of the inner tubular portion 30, as shown in FIGS. 14 (b), 15, and 16. After that, the lid 30 is engaged with the engaging outside N6 of the nozzle N coaxially inserted inside the inner tubular portion 30 so that the lid portion 31 closes the opening 21 of the outer tubular portion 20. An engagement portion 36 for moving the inner tubular portion 30 in the axial direction is provided.

  As shown in FIGS. 12 and 15 to 17, one of the engaging portions 36 is provided on the inner peripheral surface of the inner cylindrical portion 30 near the rear portion 30c, and is parallel to each other when viewed in the axial direction. The portion of the rear cylinder 30c that is separated in the circumferential direction of the inner tubular portion 30 by the two notches 36a and 36b that are two straight lines and are provided at the same radial distance from the center of the passage portion 30a is the support portion 35. It is said that. A claw portion 37 protruding inward in the radial direction of the inner tubular portion 30 is provided at the tip of the rear portion 30c of the support portion 35 between the notches 36a and 36b.

As shown in FIGS. 15, 16 and 17, the one claw portion 37 extends along a portion of the side surface portion of the passage portion 30a between the cuts 36a and 36b and has a diameter of the passage portion 30a. The front end 35b of the support portion 35 elastically deformable in the direction is provided at the inner end of the rear end portion 30c.
The support portion 35 is elastically deformable such that the tip end side 35b moves in the radial direction of the passage portion 30a with a base end 35a on one end side which is an axial end position of the notches 36a, 36b as a fulcrum.

  Similarly, as shown in FIGS. 12 and 15 to 17, the facing engagement portion 36 is located at a position that faces the notches 36a and 36b in the radial direction, and is axially opposed to the notches 36a and 36b. The portions separated in the circumferential direction of the rear ridge 30c by the notches 36c and 36d formed in parallel with each other as viewed are the supporting portions 35. At the tip of the rear end portion 30c of the support portion 35, which is located between the cuts 36c and 36d, a claw portion 37 that protrudes radially inward of the rear portion 30c of the inner tubular portion 30 is provided.

As shown in FIGS. 15, 16, and 17, the facing claw portion 37 extends along a portion of the side surface portion of the passage portion 30a between the notches 36c and 36d and has a diameter of the passage portion 30a. The front end 35b of the support portion 35 elastically deformable in the direction is provided at the inner end of the rear end portion 30c.
The support portion 35 is elastically deformable so that the tip end side 35b moves in the radial direction of the passage portion 30a with a base end 35a on one end side which is an axial end position of the notches 36c and 36d as a fulcrum.

  As shown in FIGS. 15, 12, and 18, the engagement portion 36 is engageable with an engagement outside N6 provided on the outer surface of the nozzle N described later, and the elasticity of the support portion 35. Is disengageable. As will be described later, the two supporting portions 35 and 35 at the facing position receive the action force by the nozzle N inserted into the inner tubular portion 30 so as to expand the diameter outward in the axial direction at the same time. When 35b elastically deforms so as to move to the outside in the radial direction of the passage portion 30a, and the claw portion 37 and the claw portion 37 both pass over the engaging outside N6, the elasticity of the support portion 35 causes the radial direction of the passage portion 30a. Restored to move inward.

  In order to enable this operation, the facing claw portion 37 and the radial distance t2 between the claw portions 37 are set so that the engaging outside N6 of the nozzle N is as shown in FIG. 13 (a) described in the first embodiment. Is set to be equal to the diameter dimension n1 of the reduced diameter portion N3 on the outer side of the step, and the radial distance t1 between the opposing support portions 35 and the support portion 35 is as shown in FIG. 13 (a) described in the first embodiment. ), The diameter can be set to be equal to the diameter dimension n2 of the enlarged diameter portion N2 which is the outer surface of the tip abutting portion N1 of the nozzle N.

  As a result, when the engaging portion 36 having the original diameter dimension is engaged with the engaging outside N6 of the nozzle N and moves outward in the axial direction, the nozzle N and the inner cylinder portion 30 are integrated. As it moves, it becomes a trapped state.

  In addition, in the operation of expanding the diameter of the support portion 35 to the outside in the axial direction, as shown in FIGS. 18, 19, and 20, the support portion 35 is located at the axial position corresponding to the diameter expansion portion 24 of the outer tubular portion 20. This is possible only when the axial position of the inner tubular portion 30 is set as described above. At the axial position where the inner tubular portion 30 enters one end side (inner side) from that, the support portion 35 abuts the tubular portion 20a of the outer tubular portion 20, and the claw portions 37, 37 expand in diameter. You cannot move in the direction. As a result, it is possible to prevent the engagement portion 36 from being disengaged from the engagement outside N6 of the nozzle N, and only the nozzle N is moved outward in the axial direction, and the nozzle N and the inner cylinder portion 30 are integrally moved. It can be maintained.

As shown in FIGS. 14, 18, 19, 21, 23, and 25, the nozzle N according to the present embodiment has a substantially cylindrical shape that is slidable by being inserted into the inner tubular portion 30. The inner cylindrical portion 30 has an outer diameter dimension that is substantially equal to the inner diameter of the passage portion 30a.
As shown in FIG. 21, the tip of the nozzle N is a tip abutting portion N1 that abuts the abutting portion 33 to move the inner tubular portion 30 in the opening direction, and the outer surface portion thereof has the aforesaid engagement portion. An engaging outside N6 capable of engaging with the portion is provided.

  As shown in FIGS. 18 to 25, the engagement outside N6 can be a step provided on the outer peripheral surface of the nozzle N so that the claw portion 37 is engaged, and the tip end contact more than the engagement outside N6. The contact portion N1 side is the enlarged diameter portion N2, and the opposite side of the engaging outside N6 from the tip contact portion N1 is the reduced diameter portion N3.

  In the nozzle N, in the reduced diameter portion N3 outside the step serving as the engaging outside N6, as shown in FIG. 13 (a), the diameter dimension n1 is such that the facing claw portion 37 and the claw portion in the inner tubular portion 30 are opposite to each other. It can be set to be equal to the radial distance t2 between 37, and at the enlarged diameter portion N2 which is the outer side surface of the tip abutting portion N1, the diameter dimension thereof is as shown in FIG. 13 (a). n2 can be set to be equal to the radial direction distance t1 between the opposing support portions 35 and 35.

  Further, in the nozzle N, as shown in FIG. 13A, instead of the configuration in which the stepped portion in which the enlarged diameter portion N2 which is the outer side surface of the tip abutting portion N1 becomes the engaging outside N6 is replaced with FIG. As shown in (b), it is a ridge having an enlarged diameter portion N4 in the vicinity of the tip abutting portion N1, and a reduced diameter portion N5 is provided on the engagement outside N6 side of the protrusion. It is also possible to provide an enlarged diameter portion N7 which is a ridge as N6 so as to have an outer surface shape continuous with the reduced diameter portion N3. In this case, it is possible to reduce the friction by reducing the surface area of the nozzle N that contacts the inner surface of the passage portion 30a.

Here, in the reduced diameter portion N5, as shown in FIG. 13B, the diameter dimension n1 is set to be equal to the facing claw portion 37 in the inner tubular portion 30 and the radial distance t2 between the claw portions 37. The diameter dimension n2 of the expanded diameter portion N4 and the expanded diameter portion N7 is set to be equal to the opposing support portion 35 and the radial distance t1 between the support portions 35. You can
Further, in the structure shown in FIG. 13B, it is also possible to adopt a structure in which there is no expanded diameter portion N4 and the reduced diameter portion N5 is continuous up to the tip abutting portion N1.

The radial distance t1 between the support portions 35 and 35 is set to be equal to the radial distance t1 in the passage portion 30a.
The outer dimension n2 of the enlarged diameter portion N2, the enlarged diameter portion N4, and the enlarged diameter portion N7 is set to be substantially equal to the inner diameter dimension of the cylindrical portion 20a of the outer tubular portion 20.

  In the nozzle N, as shown in FIGS. 18 to 25 and 13, the axial dimensions of the tip abutting portion N1 and the engaging outside N6 are the same as those of the claw portion 37 of the inner tubular portion 30 and the abutting surface 33a. It is set to be smaller than the axial distance.

  Outside the engaging outside N6 of the nozzle N, the insertion distance of the nozzle N is regulated by abutting the opening 22 of the outer tubular portion 20, and the inner tubular portion 30 that moves integrally in the axial direction is provided inside. An insertion defining portion N8, which defines the moving distance, is provided so as to project on the outer peripheral surface. The radial dimension of the insertion defining portion N8 may be set to be larger than the radial dimension of the opening 22 of the outer tubular portion 20.

  The operation of the spout structure and the nozzle according to this embodiment will be described below.

  In the present embodiment, first, the description will be started from the closed state of the spout structure 10, as shown in FIG.

  The bag body 11 in this state is filled with a necessary fluid inside without the cap structure 40 serving as a cap, and then the cap structure 40 with the lid 31 closed is screwed into the conduction path 41. They are combined and sealed.

  In the opening 21 of the outer tubular portion 20 in this state, as shown in FIG. 17, the peripheral surface 31a of the lid 31 is in close contact with the expanded diameter portion 23, and the closed surface 31c is in close contact with the closed surface 25. It is sealed. At this time, in the enlarged diameter portion 23 and the peripheral surface 31a, the seal projection 31b cooperates with the seal portion 23a to seal the opening 21. As a result, the inside of the bag body 11 is in a sealed state.

  For example, in order to discharge the fluid from the sealed bag body 11, the nozzle N is inserted into the plug structure 10 as shown in FIG. Then, the enlarged diameter portion N2, which is the outer side surface of the tip abutting portion N1, passes through the claw portion 37 of the inner tubular portion 30 and is inserted into the passage portion 30a.

Next, as shown in FIGS. 19 and 20, the claw portion 37 of the inner cylindrical portion 30 is pressed in the direction in which the distance increases in the radial direction by the enlarged diameter portion N2 inserted in the passage portion 30a. Here, between the tip of the claw portion 37 and the tip of the claw portion 37 which are opposed to each other having the radial dimension n1, the claw is provided by the enlarged diameter portion N2 set as the radial dimension n2 which is larger than the radial dimension n1. The radial distance between the portion 37 and the claw portion 37 is increased. At this time, the support portions 35, 35 are elastically deformed from the base portion 35a, so that the radial distance between the claw portion 37 and the claw portion 37 is expanded to an interval equal to the dimension n2.
In addition, the support portions 35 and 35 provided with the claw portion 37 and the claw portion 37 whose radial distance is expanded can be deformed by the enlarged diameter portion 24 of the outer tubular portion 20 being escaped. The joint outer portion N6 can move inward in the axial direction A beyond the position of the claw portion 37.

Next, as shown in FIGS. 21 and 22, when the nozzle N is inserted in the axial direction A to the position where the step of the engaging outside N6 exceeds the claw portion 37, the claw portion 37 opposed by the elasticity of the support portion 35 is formed. And the tip of the claw portion 37 move toward the axial center side, and the distance between the claw portions 37.37 is reduced to the radial dimension n1 of the reduced diameter portion N3.
As a result, the claw portion 37 is engaged with the stepped portion of the engaging outside N6 to be in an engaged state.

Next, as shown in FIGS. 21 and 22, the tip abutting portion N1 of the nozzle N abuts on the abutting surface 33a of the inner tubular portion 30 and presses the abutting portion 33 in the axial direction A. As a result, the inner tubular portion 30 is pressed in the axial direction A and overcomes the locking force between the peripheral surface 31a of the lid portion 31 and the enlarged diameter portion 23 and between the seal ridge 31b and the seal portion 23a. Then, the lid portion 30 moves from the enlarged diameter portion 23 in the axial direction A.
As a result, the seal of the opening 21 is released, and the inside of the bag 11 and the inside of the tube of the nozzle N are in communication with each other.

  Further, as shown in FIGS. 23 and 24, the tip abutting portion N1 of the nozzle N continues to press the abutting portion 33 of the inner tubular portion 30 in the axial direction A, and the axial direction A of the inner tubular portion 30 is continued. Continue to move to. Then, the nozzle N moves in the axial direction A up to the insertion distance of the nozzle N defined by the contact of the insertion defining portion N8 with the opening 22 of the outer tubular portion 20, and the inner cylinder extends in the axial direction A integrally with the nozzle N. The part 30 moves to the inside of the bag body 11. As a result, the lid portion 31 supported by the lid supporting portions 32 and 32 projects toward the inside of the bag body 11 and fully opens the opening between the tip 30b of the passage portion 30a and the lid portion 31 surface 31d.

At this time, since the contact portion 33 projects toward the central axis direction only in the radial direction distance corresponding to the wall thickness of the nozzle N with respect to the inner diameter of the passage portion 30a, the abutment portion 33 has a cross-sectional area of the internal flow passage of the nozzle N. In contrast, the opening cross-sectional area between the tip 30b of the passage portion 30a and the surface 31d of the lid portion 31 does not decrease, and it is possible to maintain a substantially equal cross-sectional area.
In this open state, as shown in FIG. 23, the fluid filled in the bag body 11 is discharged from the nozzle N as shown by arrows F1 and P1 in the figure.

  When the discharge of the fluid from the bag body 11 is completed, as shown in FIG. 25, the nozzle N is moved outward in the axial direction as indicated by an arrow B in the figure, so that the tip abutting portion of the nozzle N is moved. N1 is separated from the contact surface 33a of the inner tubular portion 30. Next, the nozzle N is moved outward in the axial direction as indicated by arrow B in the figure, whereby the step of the engaging outside N6 of the nozzle N abuts and engages with the claw portion 37. In this state, the nozzle N is further moved toward the outside in the axial direction as shown by the arrow B in the figure, so that the inner cylinder engaged with the engaging outside N6 of the nozzle N by the claw portion 37. The portion 30 moves integrally with the nozzle N toward the axially outer side, as indicated by the arrow B in the figure.

  Further, by moving the nozzle N toward the outer side in the axial direction as shown by the arrow B in the figure, the lid 31 is inserted into the opening 21, as shown in FIG. As a result, the peripheral surface 31 a of the lid 31 comes into close contact with the expanded diameter portion 23, and the closing surface 31 c comes into close contact with the closing surface 25. At this time, in the enlarged diameter portion 23 and the peripheral surface 31a, the seal protrusion 31b cooperates with the seal portion 23a to seal the opening 21. As a result, the inside of the bag 11 is sealed by the lid 31.

  In the closed state, the claw portion 37 and the support portions 35, 35 are located at the expanded diameter portion 24 of the outer tubular portion 20. In this state, further, by moving the nozzle N toward the outer side in the axial direction as indicated by an arrow B in the figure, the support portions 35 and 35 provided with the claw portion 37 and the claw portion 37 are It can be deformed by being located in the enlarged diameter portion 24 of the outer tubular portion 20 which can be escaped with respect to the expansion of the directional dimension, and the enlarged diameter portion N2 is the radial distance between the claw portion 37 and the claw portion 37. And the engaging outside N6 moves outward beyond the position of the claw portion 37 in the axial direction A. Then, as shown in FIG. 26, the nozzle N is removed from the spout height diagram 10.

In the plug structure 10 and the nozzle N in the present embodiment, the nozzle N is inserted from the outside of the bag body 11 into the inner tubular portion 30 of the plug structure 10 and moved in the direction of arrow A toward the inside of the bag body 11. Thus, the contact portion 33 with which the nozzle N tip contact portion N1 is in contact is pressed to move the inner tubular portion 30 axially inward with respect to the outer tubular portion 20, so that the lid portion 31 and the outer tubular portion 20 The seal with the opening 21 is released, and the openings 21 and 22 of the outer tubular portion 20 are in an open state in which they can communicate with each other through the one end 30a of the inner tubular portion 30 and the surface 31d of the lid portion 31. Further, by moving the nozzle N inserted inside the plug structure 10 toward the outside in the direction of the arrow B, the engaging portion 36 engages with the engaging outside N6 of the nozzle N, and the inner tubular portion 30 moves. A closed state in which the opening 21 of the outer tubular portion 20 is closed by the outer peripheral surface 31a of the lid portion 31 contacting the opening peripheral edge 25 of the outer tubular portion 20 by moving in the direction of the arrow B toward the outside integrally with the nozzle N. Becomes In this way, the inner cylinder portion 30 can be moved in the axial direction by the inserting and withdrawing operation of the nozzle N, and the opening and closing of the plug structure 10 can be surely repeated only by this reciprocating operation. Becomes
In addition, by providing the outer tubular portion 20 as a through hole in the wall portion of the container 11 or the like, the plug can be provided in the liquid filling container 11 and can be reclosed.

  Examples of applications of the present invention include medical drip connection connectors and ink cartridges for inkjet printers.

10 ... Plug structure 11 ... Container (bag)
20 ... Outer cylinder portion 20a ... Cylindrical portion 21 ... Opening portion (opening)
22 ... Opening part (opening)
23 ... Expanded part 23a ... Seal part 24 ... Expanded part 25 ... Closure surface 30 ... Inner tube part 30a ... Passage part 30b ... Tip 30c ... Rear part 31 ... Lid part 31a ... Peripheral surface 31b ... Seal ridge 31c ... Blocked Surface 31d ... Surface 32 ... Lid support portion 33 ... Contact portion 33a ... Contact surface 35 ... Support portion 35a ... Base end 35b ... Tip 36 ... Engaging portions 36a, 36b, 36c, 36d ... Notch 37 ... Claw portion N ... Nozzle N1 ... Tip contact portion N2 ... Expanded diameter portion N3 ... Reduced diameter portion N4 ... Expanded diameter portion N5 ... Reduced diameter portion N6 ... Engagement outside N8 ... Insertion regulation portion

Claims (9)

An outer cylinder part having both ends open, and an outer cylinder part that is coaxially located inside the outer cylinder part and is slidably inserted in the axial direction of the outer cylinder part and separated from one end thereof in the axial direction. An inner cylinder part to which a lid part capable of closing the part opening is connected,
A tip end portion of a nozzle that is coaxially inserted inside the inner cylinder portion abuts on the one end side of the inner cylinder portion in a direction in which the closure of the outer cylinder portion by the lid portion is released. A contact portion for pressing the portion is provided,
Other end side of the inner cylindrical portion engages the engaging outside of the nozzle which is inserted coaxially inside the inner cylinder part, said the direction in which the lid closes the said outer tubular portion An engaging portion for moving the tubular portion is provided,
The plug structure, wherein the engagement portion is engageable with an engagement outside provided on an outer side surface portion of the nozzle and is disengageable by elasticity. The engaging portion is a claw portion that protrudes radially inward of the inner tubular portion, and the claw portion extends along the side surface portion of the inner tubular portion and is elastically deformed in the radial direction of the inner tubular portion. spout structure according to claim 1, wherein the provided first end of the support portion as possible. The abutting portion is located inside the side surface portion of the inner tubular portion in the radial direction, and is located at a position separated from the surface of the lid portion on the inner tubular portion side in the axial direction of the inner tubular portion by a predetermined distance. The plug structure according to claim 1, wherein the plug structure is provided so as to project radially inward from a side surface portion of the tubular portion. A lid support portion that extends in the axial direction and is connected to the inner cylinder portion side surface of the lid portion is provided on the one end side of the side surface portion of the inner tubular portion , and the lid portion is the outer portion. The plug structure according to any one of claims 1 to 3, wherein both openings of the outer tubular portion can communicate with each other in a state of being separated from the tubular portion. The peripheral surface of the front Kifuta portion, the spout structure according to claim 4, wherein the outside diameter is set equal to the inner diameter of the enlarged diameter portion of the container inside the outer cylinder part. The plug structure according to any one of claims 1 to 5, wherein a seal part is provided around the lid part and / or the outer cylinder part at a position where they abut against each other. On the side opposite to the side of the outer tubular portion that is closed by the lid portion, the diameter of the engagement portion is expanded so that the engagement portion can be elastically deformed radially outward when the lid portion closes the outer tubular portion. The spout structure according to any one of claims 1 to 6, wherein the spout structure has an enlarged diameter portion. The one end side of the inner cylinder part outer peripheral surface and / or the the inner cylinder part outer peripheral surface and a slidable said barrel inner peripheral surface is than the engaging portion in the other end position of the inner cylinder part The plug structure according to any one of claims 1 to 7, wherein a seal portion is circumferentially provided at a position where these abut each other. A nozzle which is inserted into the spout structure according to any one of claims 1 to 8 to close and open the outer cylinder part opening by the inner cylinder part,
While having an outer diameter that is slidable by being inserted into the inner tubular portion, a tip abutting portion that comes into contact with the abutting portion and allows the inner tubular portion to move in the opening direction is provided at the tip thereof, A nozzle for opening and closing a spigot structure, characterized in that an engagement outside capable of engaging with the engagement portion is provided on an outer surface portion thereof.

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