JP2015155322A - Cock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress or prevent liquid spill when load is applied to a knob in a cock device for container for liquid.

SOLUTION: A plug part 10 of a cock device 5 is attached to a mouth 4 of a container 1. On an outside surface of the plug part 10, a nozzle part 20 formed of an outer cylinder 21 and inner cylinder 22 is provided. By a knob part 24a of one end of the inner cylinder 22, the inner cylinder 22 is rotated around an axial line L₀ between a closed position and open position. When the inner cylinder 22 is at the closed position, the knob part 24a and plug part 10 contact each other. Distance L₁ from the axial line L₀ on an outermost contact part 31e which is farthest from the axial line L₀ on the contact part is equal to or more than distance L₂ from the outermost contact part 31e toward a tip end of the knob part 24a (L₁≥L₂).

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to a cock device that is provided in a liquid container and pours or closes the liquid content from the mouth of the container, and in particular, a bag that has an outer box and an inner bag and into which the liquid can be placed. The present invention relates to a cock device suitable for an in-box.

  For example, a bag-in-box is known as a container that stores liquids such as beverages, detergents, and chemicals and dispenses them as necessary (see Patent Documents 1 to 3). The bag-in-box is a container in which a flexible resin inner bag is accommodated in a cardboard outer box, and is widely used for business use and home use because it is lightweight, strong and easy to discard. A mouth portion is provided at one location of the inner bag, and a cock device for opening and closing is attached to the mouth portion.

  As disclosed in Patent Document 1 and the like, this type of cock device includes a circular lid-like plug part and a nozzle part provided on the outer surface of the plug part. A mouth plug is attached to the mouth of the inner bag to close the mouth. The nozzle part has a double cylinder structure of an outer cylinder and an inner cylinder. The outer cylinder is integrated with the plug part. The inner cylinder is press-fitted into the outer cylinder so as to be rotatable. The inner cylinder is integrally provided with a knob extending so as to intersect the axis. The cock device can be opened and closed by turning this knob.

  The knob of Patent Document 1 has an L shape having a short rod portion extending in a radial direction from the closed end of the inner cylinder and a long rod portion orthogonal to the short rod portion. In the closed position, the base end side (near the short hook portion) of the long hook portion comes into contact with the outer surface of the plug portion. The long hook portion extends further from the base end side portion in contact with the plug portion. In this knob, the length of the base end side portion that comes into contact with the plug portion is shorter than the length of the base end portion and thus the tip end portion extending from the plug portion (FIG. 2B of Patent Document 1).

  Further, a small convex portion is formed on the back surface of the knob (a surface facing the plug portion when closed) of Patent Document 3, and a vertically long receiving convex portion extending parallel to the axis of the nozzle portion is formed on the outer surface of the plug portion. Is formed. In the closed position, the small convex portion comes into contact with the receiving convex portion. In this knob, the distance from the axis of the nozzle part to the abutting part (that is, the small convex part) is shorter than the distance from the abutting part (that is, the small convex part) to the tip of the knob (see FIG. 3). 3).

Japanese Patent No. 4021531 Utility Model Registration No. 3173157 Utility Model Registration No. 3177115

Usually, when the bag-in-box is shipped, the cock device is housed inside the outer box. Further, the outlet of the cock device in the outer box is still blocked only by the perforations and the like. Therefore, the cock device is sandwiched between the bag filled with the content liquid and the inner wall of the outer box. Therefore, an excessive load is easily applied to the knob of the cock device. Due to this load, a gap is formed between the inner cylinder and the outer cylinder, and the content liquid may leak. In particular, when the content liquid is a high-temperature liquid such as hot spring water, the constituent members of the cock device are softened by the heat of the content liquid, so that a gap is easily formed, and liquid leakage is likely to occur.
In view of the above circumstances, an object of the present invention is to improve the liquid leakage resistance of a cock device.

In order to solve the above problems, the present invention provides a cock device that is provided in a mouth portion of a container and that pours and closes the liquid content in the container from the mouth portion, the mouth being attached to the mouth portion. A stopper part, and a nozzle part provided so that the axis line is along the outer surface of the stopper part. The nozzle part has an outer cylinder having an opening at both ends integrated with the stopper part, and one end is closed. An inner cylinder having the other end opened, and a knob portion extending in an extending direction intersecting with a direction parallel to the axis while continuing to one end of the inner cylinder, the inner cylinder having the one end The outer cylinder is press-fitted so as to be rotatable between an open position and a closed position so as to protrude from the outer cylinder, and at the closed position, the knob portion and the plug portion abut, And in the extension direction from the axis of the outermost contact portion farthest from the axis at the corresponding contact Cormorant distance L ₁ is, that the a said extending length L ₂ or more along the direction from the outermost contact portion to the tip of the handle portion (L ₁ ≧ L _2), preferably L _1> L ₂ Features.
According to this feature, when a load is applied to the tip of the knob, the load is transmitted to the inner cylinder using the tip of the knob as a power point, the outermost abutting portion as a fulcrum, and the inner cylinder as an action point. . At this time, since L ₁ ≧ L _2, it is possible to avoid the load being amplified and transmitted to the inner cylinder. The load applied to the inner cylinder can be attenuated by preferably satisfying L ₁ > L ₂ . Therefore, it is possible to suppress or prevent a gap from being formed between the outer cylinder and the inner cylinder, and as a result, it is possible to suppress or prevent liquid leakage from occurring between the outer cylinder and the inner cylinder. Can be improved.

  It is preferable that the outermost contact portion is located on the outermost peripheral portion of the outer side surface of the plug portion. Thereby, the outermost contact portion can be arranged as far as possible from the axis, and the load applied to the inner cylinder can be made as small as possible. Therefore, it is possible to reliably suppress or prevent the formation of a gap between the outer cylinder and the inner cylinder, and it is possible to reliably suppress or prevent liquid leakage.

  It is preferable that a convex portion is formed at a portion constituting the outermost contact portion in the knob portion or the plug portion. Thereby, a knob part and a plug part can be made to contact | abut reliably in an outermost contact part.

  First and second convex portions are formed apart from each other in the extending direction on the back surface of the knob portion facing the plug portion at the closed position, and the first convex portion is more than the second convex portion. Is arranged on the distal end side of the knob portion to constitute the outermost abutting portion, and further, a receiving convex portion is formed on the outer side surface of the plug portion, and the first and the first in the closed position. It is preferable that two convex portions are brought into contact with the plug portion so as to sandwich the receiving convex portion therebetween. As a result, the knob portion and the plug portion in the closed position can be brought into mesh with each other. Therefore, not only can the load applied to the knob portion be reliably transferred to the plug portion, but also the first and second protrusions when the knob portion is bent and deformed in the direction along the outer surface of the plug portion, for example. The bending deformation can be suppressed or prevented by the portion being caught by the receiving convex portion. As a result, the deformation of the inner cylinder can be more reliably suppressed or prevented, and the liquid leakage from the cock device can be reliably suppressed or prevented.

  A third convex portion is further formed on the back surface of the knob portion, and the second convex portion and the third convex portion face each other in the width direction of the knob portion, and the first convex portion is in the closed position. It is preferable that a 3rd convex part is contact | abutted with the said stopper part. Thereby, the knob part at the time of closing can be made to contact | abut with a plug part at least at three points. Therefore, the load can be reliably transferred from the knob portion to the plug portion, and the deformation of the knob portion and thus the deformation of the inner cylinder can be reliably suppressed or prevented.

  It is preferable that the receiving convex portion extends along the axis, and that the third convex portion is disposed in the vicinity of the side portion of the receiving convex portion in the closed position. As a result, when the knob portion is to bend and deform in a direction along the outer surface of the plug portion, for example, the third and second convex portions are also caught by the receiving convex portion, so that the bending deformation is caused. Can be more reliably suppressed or prevented. As a result, the deformation of the inner cylinder can be more reliably suppressed or prevented, and the liquid leakage can be more reliably suppressed or prevented.

  According to the present invention, when a load is applied to the tip portion of the knob portion in the closed position, the magnitude of the load transmitted to the inner cylinder can be made equal to or less than the magnitude of the load to the tip portion of the knob portion. Therefore, it can suppress or prevent that a clearance gap is formed between an outer cylinder and an inner cylinder, and can improve the liquid leakage resistance of a cock apparatus.

FIG. 1 shows a first embodiment of the present invention and is a perspective view of a bag-in-box provided with a cock device. FIG. 2 is an exploded perspective view of the cock device. FIG. 3 is a front view showing the cock device in a closed state. FIG. 4 is a front view showing the cock device in an open state. Fig.5 (a) is a longitudinal cross-sectional view which follows the Va-Va line | wire of FIG. 3 which shows the cock apparatus of the said closed state in the state accommodated in the outer case shown with a dashed-two dotted line. FIG.5 (b) is a longitudinal cross-sectional view which follows the Vb-Vb line | wire of FIG. 4 which shows the cock apparatus of the open state taken out from the outer case shown with a dashed-two dotted line. FIG. 6 is a plan view of the cock member of the cock device. Fig.7 (a) is sectional drawing of the knob and plug part of the said cock apparatus of the said closed state which followed the VIIa-VIIa line | wire of FIG. FIG.7 (b) is sectional drawing of the knob and plug part of the said cock apparatus of the said closed state which follows the VIIb-VIIb line | wire of FIG. FIG. 8 shows a second embodiment of the present invention, and FIG. 8 (a) is a cross-sectional view corresponding to FIG. 7 (a) of the knob and the plug portion in the closed state. FIG. 7B is a cross-sectional view corresponding to FIG. 7B of the knob and the plug portion in the closed state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show a first embodiment of the present invention. As shown in FIG. 1, a bag-in-box 1 (container) includes an outer box 2 made of cardboard and an inner bag 3 made of flexible resin. An inner bag 3 is accommodated in the outer box 2. The inner bag 3 is filled with a liquid (content liquid) such as a beverage, a detergent, or a chemical solution. Here, drinking hot spring water is contained as the content liquid. The temperature at the time of filling this hot spring water is, for example, about 50 ° C. to 90 ° C., and preferably about 65 ° C. to 70 ° C. As shown in FIG.1 and FIG.5, the one side part of the inner bag 3 is provided with the substantially cylindrical mouth part 4 which consists of hard resin. A cock device 5 is joined to the mouth 4 by a stopper. On one side 2a of the outer box 2, a cock outlet 2b is formed. In addition, as shown to the dashed-two dotted line of Fig.5 (a), at the time of manufacture-shipment of the bag-in-box 1 containing a content liquid, the taking-out port 2b is closed, and a perforation etc. are carried out along the periphery of this taking-out port 2b. A cut 2c is formed. As shown by the two-dot chain line in FIGS. 1 and 5B, the outlet 2b is opened when the content liquid is used, and the cock device 5 is taken out from the outlet 2b. The one side surface 2a of the outer box 2 is preferably directed upward when the bag-in-box 1 is shipped, and is directed to the front (right in FIG. 5) when the bag-in-box 1 is used. FIG. 5A shows the state at the time of shipment (before use), but for the sake of convenience, it is shown in the same direction as the state at the time of use in FIG. Hereinafter, unless otherwise specified, the description will be made assuming that the one side surface 2a of the outer box 2 and the cock device 5 are facing the front.

  As shown in FIG. 2, the cock device 5 includes two members, a body member 5a and a cock member 5b. The body member 5a integrally includes the plug portion 10 and the outer cylinder 21. The material of the body member 5a is a hard resin such as polyethylene. The cock member 5b integrally includes an inner cylinder 22 and a knob 24. The material of the cock member 5b is a hard resin such as polypropylene or polystyrene. The outer cylinder 21 and the inner cylinder 22 constitute a nozzle portion 20. In other words, the cock device 5 includes the spout portion 10 and the nozzle portion 20.

  As shown in FIGS. 2 and 3, the plug portion 10 has a circular lid shape. As shown in FIG. 5, the mouth plug portion 10 is attached to the mouth portion 4 with a stopper to close the mouth portion 4. As shown in FIG. 3, a pair of left and right receiving convex portions 14, 15 are formed on the outer surface 11 of the plug portion 10. These receiving convex parts 14 and 15 have a vertically long shape extending vertically. The upper end portions of the receiving convex portions 14 and 15 reach the outer edge of the plug portion 10, respectively. The lower end portions of the receiving convex portions 14 and 15 are positioned in the vicinity of the center portion of the plug portion 10 in the vertical direction.

As shown in FIGS. 2 and 3, the nozzle portion 20 is provided in the center portion in the left-right direction of the plug portion 10. The receiving convex portions 14 and 15 are arranged on both the left and right sides of the nozzle portion 20. As described above, the nozzle portion 20 includes the outer cylinder 21 and the inner cylinder 22 and has a double cylinder shape. The outer cylinder 21 has a cylindrical shape (cylindrical shape) with both ends opened. The axis of the outer cylinder 21 and thus the axis L ₀ of the nozzle portion 20 are directed in the vertical direction along the outer surface 11 of the plug portion 10.

  A substantially quadrangular continuous portion 13 is formed so as to protrude from a substantially central portion of the outer surface 11 of the plug portion 10. Through the continuous portion 13, the plug portion 10 and the peripheral side portion of the outer cylinder 21 are integrally continuous with each other.

  As shown in FIG. 5, a first communication hole 13 a is formed inside the continuous portion 13. The first communication hole 13 a penetrates from the inner side surface of the plug portion 10 to the inner peripheral surface of the outer cylinder 21. An air hole 21e for draining the liquid in the nozzle portion 20 at the time of closing is formed at a position facing the first communication hole 13a in the peripheral side portion of the outer cylinder 21 at a distance of 180 degrees.

The outer cylinder 21 holds the inner cylinder 22 and thus the cock member 5b. The outer cylinder 21 constitutes an inner cylinder holding part. The inner cylinder 22 has a cylindrical shape (cylindrical shape) whose upper end (one end) is closed and whose lower end (the other end) is opened, and which is longer than the outer cylinder 21. The inner cylinder 22 is rotatably pressed between an open position about the axis L ₀ to the outer tube 21 (FIGS. 4 and FIG. 5 (b)) and a closed position (FIGS. 3 and FIG. 5 (a)) . When the outer peripheral surface of the inner cylinder 22 is in close contact with the inner peripheral surface of the outer cylinder 21, the space between the outer cylinder 21 and the inner cylinder 22 is sealed in a liquid-tight manner. A second communication hole 22 a is formed in the peripheral side portion of the inner cylinder 22. The second communication hole 22 a penetrates from the outer peripheral surface of the inner cylinder 22 to the inner peripheral surface. The lower end of the inner cylinder 22 protrudes downward from the outer cylinder 21. The lower end of the inner cylinder 22 and thus the lower end (tip) of the nozzle portion 20 constitutes a discharge hole.

  As shown in FIG. 5, the upper end of the inner cylinder 22 protrudes from the upper end of the outer cylinder 21, and the cap part 23 is integrally provided there. The cap portion 23 has a substantially truncated cone shape, and its bottom portion has a larger diameter than the inner cylinder 22 and is approximately equal to the outer diameter of the outer cylinder 21. The bottom of the cap 23 is in contact with the upper end edge of the outer cylinder 21. The cap part 23 closes the upper end of the inner cylinder 22 integrated with the cap part 23 and closes the upper end of the outer cylinder 21.

As shown in FIG. 6, a knob 24 is integrally provided on the cap portion 23. The knob 24 integrally includes a long knob portion 24a and a short connection portion 24b. The connecting portion 24b extends from the cap portion 23 in the radial direction of the nozzle portion 20 and draws an arc in plan view, so that the extending direction gradually approaches the tangential direction of the nozzle portion 20 as the extension portion approaches the knob portion 24a. ing. Knob portion 24a from the distal end of the connecting portion 24b extends in the tangential direction of the nozzle portion 20 (perpendicular to the parallel to the axis L ₀ direction (crossing) the extending direction of). The knob portion 24a is connected to the cap portion 23 and thus the upper end (one end) of the inner cylinder 22 via the connection portion 24b. When the knob 24 is in the closed position, the extending direction of the connecting portion 24b at the joint portion between the connecting portion 24b and the cap 23 is inclined by about 45 ° with respect to the outer surface 11 of the plug portion 10, and the knob portion 24a The extending direction is substantially parallel to the outer surface 11 of the plug portion 10. Therefore, the angle formed by the extending direction of the connecting portion 24b and the extending direction of the knob portion 24a at the joint portion between the connecting portion 24b and the cap 23 is about 135 °.

As shown in FIGS. 3 and 6, a convex edge portion 24e and a rib plate 24f are formed on the front side surface of the knob 24 (the surface facing the front surface (the side opposite to the plug portion 10) in the closed position). Has been. The convex edge portion 24e is continuous along the peripheral edge (upper edge, lower edge, and edge on the front end side) of the knob 24, and has a U shape. Rib plate 24f is adapted to plate-shaped outline rectangle orthogonal to the axis L _0. The rib plate 24f is disposed along the lower edge of the base end portion (the portion on the cap 23 side) of the knob 24, and is continuously connected to the convex edge portion 24e and the cap portion 23. Moreover, as shown in FIG.4 and FIG.6, the convex edge part 30 is formed in the back surface (surface which faces the plug part 10 in a closed position) of the knob 24. As shown in FIG. The convex edge portion 30 is continuous along the periphery of the knob 24 (upper edge, lower edge, and edge on the front end side) and has a U shape.

By pinching the knob 24 and rotating it around the axis L ₀ , the inner cylinder 22 is rotated around the axis L ₀ and the nozzle unit 20 is opened and closed. As shown in FIG. 4, when the knob 24 is directed so as to follow the right side portion of the outer side surface 11 of the plug portion 10, for example, the inner cylinder 22 and the nozzle portion 20 are in the open position. At this time, as shown in FIG. 5B, the second communication hole 22a coincides with the first communication hole 13a. As a result, the liquid in the bag-in-box 1 passes through the first communication hole 13a, the second communication hole 22a, and the inside of the nozzle part 20 sequentially from the mouth part 4 and from the discharge hole at the tip (lower end) of the nozzle part 20. Can be dispensed. Further, the rib plate 24 f abuts on the receiving convex portion 15 at the open position of the nozzle portion 20.

  As shown in FIG. 3, when the knob 24 is directed so as to follow the left side portion of the outer surface 11 of the plug portion 10, for example, the inner cylinder 22 and the nozzle portion 20 are in the closed position. At this time, as shown in FIG. 5A, the first communication hole 13 a is closed by the peripheral side portion of the inner cylinder 22. Thereby, the bag-in-box 1 is closed, and the dispensing of the content liquid can be prevented or stopped.

  When in the closed position, the knob 24 and the plug 10 are in contact with each other. As shown in FIGS. 3, 4, and 6, first to third convex portions 31 to 33 are formed on the convex edge portion 30 on the back surface of the knob 24. The convex part 14 becomes an abutting part that abuts against the plug part 10 at the closed position. The protruding heights of the three convex portions 31 to 33 from the convex edge portion 30 are equal to each other, and are approximately equal to the protruding height from the outer surface 11 of the receiving convex portion 14.

The 1st convex part 31 and the 2nd convex part 32 are arrange | positioned on the convex edge part 30 in the lower edge of the knob part 24a. The first and second convex portions 31 and 32 are separated from each other in the extending direction of the knob portion 24 a, and the first convex portion 31 is disposed closer to the distal end side of the knob portion 24 a than the second convex portion 32. The width of the gap between the convex portions 31 and 32 is substantially equal to the width of the receiving convex portion 14. Further, the first convex portion 31 extends longer than the second convex portion 32 in the extending direction of the knob portion 24a. Extending direction of the distal end side portion 31e of the first convex portion 31, in the contact portion between the mouth part 10 in the closed position, it is located in the most distant position from the axis L _0, the knob portion 24a The outermost contact part with the plug part 10 is comprised. The outermost abutting portion 31 e abuts on one location 10 e of the outermost peripheral portion (outer edge or the vicinity thereof) of the outer surface 11 of the plug portion 10. That is, the outermost contact portion 10 e with the knob portion 24 a in the plug portion 10 is located on the outermost peripheral portion of the plug portion 10. Specifically, the outermost contact portions 10e are disposed on the outermost peripheral portion of the (side opposite to the discharge side) upper than the center portion in the vertical direction of the mouth part 10 (the direction along the axis L _0). More specifically, the outermost abutting portion 10e is disposed at the outermost peripheral portion at a height substantially intermediate between the upper end and the central portion of the plug portion 10.

  Here, the outermost peripheral portion of the outer surface 11 of the plug portion 10 is the outer edge of the outer surface 11 of the plug portion 10 (the corner portion formed by the outer surface 11 and the peripheral end surface), as well as the outer edge of the outer surface 11. The vicinity part of is also included. The vicinity portion includes a portion of preferably up to about 2 mm inward from the outer edge, and more preferably includes a portion of up to about 0.5 mm.

As shown in FIGS. 3 and 6, the distance _{L 1} from the axis _{L 0} along the extending direction of the knob portion 24a outermost contact portion 31e, to 10e is outermost contact portion 31e, the knob portion 24a from 10e and the distance _{L 2} or more to the tip _{(L 1} ≧ _L 2), preferably the distance _{L 1} is greater than the distance _{L 2 (L 1> L} 2). The ratio between the distance L ₁ and the distance L ₂ is preferably L ₁ : L ₂ = 16: 11 to 20:15, more preferably L ₁ : L ₂ = 17: 12 to 18:13.

The 3rd convex part 33 is arrange | positioned on the convex edge part 30 in the upper edge of the knob part 24a. Therefore, first, the second protrusions 31 and 32 and the third convex portion 33 are spaced apart in the width direction of the knob portion 24a (a direction along the axis _{L 0).} The third convex portion 33, the second convex portion 32 along the width direction of the knob portion 24a (a direction along the axis L ₀₎ are straight faces. That is, the 2nd convex part 32 and the 3rd convex part 33 are arrange | positioned in the mutually same position in the extension direction of the knob part 24a.

  As shown in FIG. 7B, at the closed position, the first convex portion 31 and the second convex portion 32 come into contact with the plug portion 10 so as to sandwich the receiving convex portion 14 therebetween. Further, as shown in FIG. 7A, the third convex portion 33 comes into contact with the plug portion 10 so as to be disposed in the vicinity of the side portion of the receiving convex portion 14. Furthermore, as shown to Fig.7 (a) and (b), the receiving convex part 14 contact | abuts the convex edge part 30 of the upper edge of the knob part 24a, and a lower edge.

The bag-in-box 1 having the cock device 5 having the above-described configuration is shipped after the inner bag 3 is filled with a high-temperature content liquid (for example, about 70 ° C.). At this time, the cock device 5 is housed in the outer box 2 in a closed state, and the outlet 2b is closed. Therefore, the cock device 5 is sandwiched between the inner bag 3 filled with the content liquid and the inner wall of the outer box 2 (two-dot chain line in FIG. 5A). Therefore, an excessive load is easily applied to the knob 24. In particular, a load is likely to be applied to the tip portion extended from the outer edge of the plug portion 10 in the knob portion 24a. Then, the load is transmitted to the inner cylinder 22 with the tip of the knob portion 24a as a power point, the outermost abutting portion 31e as a fulcrum, and the inner cylinder 22 as an action point. On the other hand, the outermost contact portions 31e, the distance _{L 1} is the outermost contact portions 31e from the axis _{L 0} of 10e, for greater distance _{L 2} from 10e to the tip of the knob portion 24a _{(L 1> L} 2), The load is transmitted to the inner cylinder 22 after being attenuated. Thereby, deformation of the inner cylinder 22 can be suppressed or prevented. Furthermore, even if the heat of the content liquid at about 70 ° C. is transmitted to the nozzle portion 20 and the outer cylinder 21 and the inner cylinder 22 are softened, the load is attenuated, so that the relative relationship between the outer cylinder 21 and the inner cylinder 22 is reduced. Deformation can be reliably suppressed or prevented. Therefore, it is possible to suppress or prevent a gap from being formed between the outer cylinder 21 and the inner cylinder 22, and it is possible to suppress or prevent liquid leakage from occurring between the outer cylinder 21 and the inner cylinder 22. As a result, the liquid leakage resistance of the cock device 54 can be improved.

By setting the outermost contact portions 31e, the 10e the outermost periphery of the plugging portion 10, can be moved away outermost contact portion 31e, the 10e from axis _{L 0} as much as possible. Therefore, the relationship of L ₁ > L ₂ can be sufficiently established, and the load transmitted from the knob 24 to the inner cylinder 22 can be reliably attenuated.

  Moreover, since the 1st-3rd convex parts 31-33 of the knob part 24a each contact | abut to the stopper part 10, and the receiving convex part 14 of the stopper part 10 is contact | abutted with the convex edge part 30, these convex parts The load can be received by the plug portion 10 through the portions 31 to 33 and 14. As a result, the load transmitted to the inner cylinder 22 can be reliably reduced, and as a result, liquid leakage from between the outer cylinder 21 and the inner cylinder 22 can be reliably suppressed or prevented. Furthermore, by providing three protrusions 31 to 33 on the knob portion 24a, the load can be received at three points, and the posture when the knob 24 is closed can be stabilized.

  Further, the first convex portion 31 and the second convex portion 32 sandwich the receiving convex portion 14, and the side portion of the third convex portion 33 approaches or comes into contact with the side portion of the receiving convex portion 14, thereby closing. It is possible to bring the hour knob portion 24a into engagement with the plug portion 10. Therefore, the load applied to the knob portion 24a can be reliably transferred to the plug portion 10, and the knob portion 24a is bent upward or downward along the outer surface 11 of the plug portion 10, for example. Since the first to third convex portions 31, 32, 33 are hooked on the receiving convex portion 14, the bending deformation can be reliably suppressed or prevented. As a result, the deformation of the inner cylinder 22 can be prevented more reliably. As a result, liquid leakage from the cock device 5 can be more reliably suppressed or prevented.

  Further, in the manufacturing process of the bag-in-box 1, when the cock device 5 is hit and joined (plugged) to the mouth portion 4, in addition to one or a plurality of points on the outer surface 11 of the mouthplug portion 10, the closed state A portion corresponding to the convex portions 31 to 33 on the outer surface of the knob portion 24 (a surface opposite to the back surface having the convex portions 31 to 33) or a portion in the vicinity thereof can also be hit. As a result, the cock device 5 can be reliably and satisfactorily joined to the mouth portion 4.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are attached to the drawings for the same configurations as those already described, and the description thereof is omitted.
FIG. 8 shows a second embodiment of the present invention. In the second embodiment, as shown in FIG. 8B, the portion between the first convex portion 31 and the second convex portion 32 on the lower edge portion of the knob portion 24 a slightly protrudes from the convex edge portion 30. Thus, the raised portion 34 is configured. The protruding height of the raised portion 34 from the protruding edge portion 30 is smaller than the protruding height of the protruding portions 31 to 33.

  Further, as shown in FIG. 8A, a portion near the tip side (left in the figure) of the third convex portion 33 at the upper edge portion of the knob portion 24a is slightly raised from the convex edge portion 30, and the raised portion 35. The protruding height of the protruding portion 35 from the protruding edge portion 30 is smaller than the protruding height of the protruding portions 31 to 33 and is equal to the protruding portion 34. The two raised portions 34 and 35 are arranged at the same position in the extending direction of the knob portion 24a.

  According to the second embodiment, when the cock device 5 is closed, the three convex portions 31 to 33 abut against the outer surface 11 of the plug portion 10 and the two raised portions 34 and 35 are both received. Abuts against the convex portion 14. Thus, when a load is applied to the knob portion 24a, the load is received not only by the contact between the convex portions 31 to 33 and the plug portion 10, but also by the contact between the raised portions 34 and 35 and the receiving convex portion 14. Can do. As a result, the load transmitted to the inner cylinder 22 can be reduced, liquid leakage can be prevented, and bending deformation of the knob portion 24a can be prevented.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the distance L ₁ from the axis L ₀ of the outermost contact portions 31e and 10e may be equal to or greater than the distance L ₂ from the outermost contact portions 31e and 10e to the tip of the knob portion 24a, and L ₁ > L _It is not limited to ₂ and may be L ₁ = L ₂ . As a result, it is possible to prevent the load applied to the distal end portion of the knob portion 24a from being amplified and transmitted to the inner cylinder 22, and to suppress or prevent a gap from being formed between the outer cylinder 21 and the inner cylinder 22. It is possible to suppress or prevent liquid leakage from the device 5.
The number of convex portions that are in contact with the plug portion 10 on the back surface of the knob portion 24a is not limited to three, and may be one or two, or may be four or more.
You may form a convex part in the outermost contact part 10e in the outer surface 11 of the plug part 10. FIG. Instead, the convex portion 31 of the outermost contact portion in the knob portion 24a may be omitted.
Furthermore, if the knob 24 in the closed state and the plug portion 10 are in contact with each other so that the relationship of L ₁ ≧ L ₂ is satisfied, one or more of the convex portions 31 to 33 and 14 as the contact portions are provided. May be omitted, and all of the convex portions 31 to 33 and 14 may be omitted. The outer surface 11 of the plug portion 10 and the back surface of the knob 24 may be in direct contact with each other.
As long as the relationship of L ₁ ≧ L ₂ is satisfied, the outermost contact portions 31 e and 10 e may be disposed on the inner side of the outermost peripheral portion of the plug portion 10. In other words, the plug portion 10 may protrude outward in the radial direction of the plug portion 10 from the outermost contact portions 31e and 10e.
The cock device according to the present invention can be applied to a liquid container other than a bag-in-box. The cock device 5 does not necessarily have to be attached to the flexible bag 3, and may be attached to a box such as cardboard or other container body having shape retention or self-supporting property.

Examples will be described. However, the present invention is not limited to the following examples.
In Example 1, the bag-in-box 1 having the cock device 5 substantially the same as that of the first embodiment was used.
The material of the body member 5a of the cock device 5 was polyethylene, and the material of the cock member 5b was polypropylene.
The inner volume of the inner bag 3 was 20 liters.
The inner bag 3 was filled with about 70 ° C. hot spring water, and the mouth 4 was sealed with a cock device 5.
The knob 24 of the cock device 5 was closed.
A distance L ₁ from the axis L _{0 of the} knob 24 to the outermost abutting portions 31 e and 10 e is about L ₁ = 20 mm, and a distance L ₂ from the outermost abutting portions 31 e and 10 e to the tip of the knob 24 is , it was _L 2 = 14mm about. Therefore, L ₁ ≧ L ₂ was satisfied.
Five minutes after sealing, a load was applied to the tip of the knob 24.
The direction of the load was set to be a direction perpendicular to the outer surface 11 of the plug portion 10 and to push the knob 24 toward the plug portion 10 (a direction from the front side to the back side in FIG. 3).
And the magnitude | size of the load was changed and the presence or absence of the liquid leak was determined.
As a result, liquid leakage did not occur up to about 6 kgf.
The ambient temperature was 25 ° C.

[Comparative Example 1]
As Comparative Example 1, a bag-in-box having the cock device of Patent Document 3 is used.
The material of each component of the cock device of Comparative Example 1 was the same as that of the cock device 5 of Example 1. Further, the thickness and size of each component of the cock device were substantially the same as those of the cock device 5 of the first embodiment.
The distance L ₁ ′ from the axis of the nozzle portion of the cock device of Comparative Example 1 to the contact portion between the small convex portion on the back of the knob and the vertically long convex portion of the plug portion is about L ₁ ′ = 14 mm, The distance L ₂ ′ from the contact portion to the tip of the knob was about L ₂ ′ = 20 mm. Therefore, L ₁ '<L ₂ '.
And the liquid leak determination similar to Example 1 was performed on the same conditions as Example 1. FIG.
As a result, liquid leakage occurred at about 3 kgf.
According to the present invention, it was confirmed that the liquid leakage resistance of the cock device can be greatly improved.

  The present invention can be used as, for example, a water injection cock for a bag-in-box.

L ₀ axis 1 Bag-in-box (container)
4 mouth part 5 cock device 10 stopper part 10e outermost contact part 11 outer side surface 14 receiving convex part 20 nozzle part 21 outer cylinder 22 inner cylinder 24a knob part 31 first convex part (convex part)
31e Outermost contact portion 32 Second convex portion 33 Third convex portion

Claims (6)

A cock device provided at the mouth of the container for pouring and closing the liquid in the container from the mouth;
A plug part mounted on the mouth part, and a nozzle part provided so as to follow an axis along the outer surface of the plug part,
The nozzle part has an outer cylinder that is open at both ends that is integral with the plug part, an inner cylinder that is closed at one end and opened at the other end, and is connected to one end of the inner cylinder and in a direction parallel to the axis. A knob portion extending in an extending direction intersecting the inner cylinder, and the inner cylinder is press-fitted into the outer cylinder so as to be rotatable between an open position and a closed position so that the one end projects from the outer cylinder. Has been
In the closed position, the knob portion and the plug portion are in contact with each other, and the distance along the extending direction from the axis of the outermost contact portion farthest from the axis at the contact portion is the maximum distance. The cock device characterized in that it is at least a distance along the extending direction from the outer contact portion to the tip of the knob portion.   The cock device according to claim 1, wherein the outermost abutting portion is located on an outermost peripheral portion of the outer side surface of the plug portion.   The cock device according to claim 1, wherein a convex portion is formed at a portion constituting the outermost abutting portion in the knob portion or the plug portion. First and second convex portions are formed apart from each other in the extending direction on the back surface of the knob portion facing the plug portion at the closed position, and the first convex portion is more than the second convex portion. Is also arranged on the distal end side of the knob portion to constitute the outermost contact portion, and further, a receiving convex portion is formed on the outer side surface of the plug portion,
3. The cock device according to claim 1, wherein in the closed position, the first and second convex portions are in contact with the plug portion so as to sandwich the receiving convex portion therebetween.   A third convex portion is further formed on the back surface of the knob portion, and the second convex portion and the third convex portion face each other in the width direction of the knob portion, and the first convex portion is in the closed position. The cock device according to claim 4, wherein the third convex portion is in contact with the plug portion.   The cock device according to claim 5, wherein the receiving convex portion extends along the axis, and the third convex portion is disposed in the vicinity of a side portion of the receiving convex portion in the closed position. .

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