JP6219240B2 - Foam ejection container - Google Patents

Description

  The present invention relates to a foam ejection container that squeezes a body portion of a container body to mix a liquid content contained in the container body with air and eject the foam from a nozzle.

  As a container for storing liquids such as shampoos, body soaps, hand soaps, facial cleansers, etc. A foam ejection container in which a liquid is mixed with air and ejected from a nozzle in the form of foam is often used.

  In such a bubble ejection container, a mixing chamber for mixing the content liquid with air is provided in the discharge flow path of the content liquid, and a foaming member made of, for example, a mesh is incorporated downstream of the mixing chamber, so that the body portion of the container body Squeezing out, the content liquid is mixed with air, the foamed member is allowed to pass and foamed into a foam, and ejected from the nozzle.

  On the other hand, in order to prevent the foam-like content liquid remaining inside the nozzle after use from liquefying over time and dripping from the tip of the nozzle as a foam ejection container as described above, a so-called suck back function is provided. It is known to have it.

  For example, in Patent Document 1, a return flow path that communicates the nozzle and the container main body is provided between the nozzle and the container main body in addition to the discharge flow path, and the content liquid directed from the inside of the container main body to the nozzle is provided in the return flow path. A check valve is provided that restricts the flow of the liquid and allows the flow of the content liquid from the nozzle into the container body, so that the content liquid remaining in the nozzle due to the negative pressure generated in the container body when the squeezing is released. There is described a foam ejection container adapted to be pulled back into the container body through a return channel.

JP 2014-46938 A

  In the conventional bubble ejection container, when the container is turned sideways or upside down when not in use, the internal solution in the container body may leak from the nozzle through the discharge flow path and the return flow path. Therefore, in order to prevent the liquid content from leaking out of the nozzle even when the container is turned sideways or upside down, the flow path between the nozzle and the container body can be closed when the nozzle head is not used by rotating the nozzle head. It is conceivable to have a configuration.

  However, in such a configuration, when the internal pressure in the container body rises due to some factor such as a temperature rise in a state where the flow path between the nozzle and the container body is closed, the return flow path is non-returned by the internal pressure. Since it is blocked by the valve, when the nozzle head is rotated during use to open the flow path between the nozzle and the container main body, the internal solution in the container main body is pumped to the discharge flow path by the internal pressure. There was a risk of leakage from the nozzle tip.

  An object of the present invention is to solve such a point, and the object of the present invention is to use the flow path in use even when the flow path is closed between the nozzle and the container body when not in use. An object of the present invention is to provide a foam ejection container in which the internal solution in the container body does not leak outside from the nozzle due to the internal pressure when is opened.

  The foam ejection container of the present invention includes a flexible body, and includes a container main body in which the content liquid is accommodated and a content liquid discharge port and a return port. A nozzle cap connected to the mounting cap to be mounted; and a nozzle connected to the discharge port and the return port; the nozzle head mounted on the mounting cap by screw connection and rotatable between an open position and a closed position; and the nozzle A discharge port opening / closing portion provided in the head, closing the discharge port when the nozzle head is in a closed position, and opening the discharge port when the nozzle head is in an open position; and provided in the nozzle head, A return port opening / closing portion that closes the return port when the nozzle head is in the closed position and opens the return port when the nozzle head is in the open position, and a mixing chamber provided in the mounting cap and connected to the discharge port And having the inside A partition part having an air introduction port and a liquid introduction port connecting the chamber to the housing space at the bottom, a holding part fixed to the outer peripheral surface of the partition part, and extending radially outward from the outer peripheral surface of the holding part A non-return valve having a step portion on an upper surface of the sealing film portion, and a nozzle formed on the return port opening and closing portion. The head is rotated from the closed position toward the open position, and before the discharge port and the return port are opened, the seal film portion is pushed down in a direction away from the inner surface of the mounting cap by contacting the stepped portion. Between the return port and the check valve that is closed by the return port opening and closing unit when the pressing unit presses the seal film unit away from the inner surface of the mounting cap. Open communication that communicates the space of the outside And having a, the.

  According to the present invention, in the above-described configuration, it is preferable that the step portion is configured by denting the seal film portion in an axial direction within a predetermined angle range centering on an axis of the seal film portion.

  According to the present invention, in the above configuration, it is preferable that the step portion is constituted by a protrusion provided on the upper surface of the seal film portion.

  According to the present invention, in the above configuration, it is preferable that an outer peripheral edge of the seal film portion is in contact with a downward surface of the mounting cap.

  In the above configuration, the present invention preferably includes a nozzle opening / closing mechanism that closes the nozzle when the nozzle head is in the closed position and opens the nozzle when the nozzle head is in the open position.

  According to the present invention, when the nozzle head is rotated from the closed position toward the open position, the storage space of the container body communicates with the outside through the open passage before the discharge port and the return port are opened. Even if the internal pressure of the container body rises with the nozzle head in the closed position, when the nozzle head is rotated from the closed position to the open position, the internal pressure is released to the outside through the open passage. It is possible to prevent the internal solution from leaking out of the nozzle due to internal pressure. Therefore, according to the present invention, even when the flow path is closed between the nozzle and the container main body when not in use, the internal solution in the container main body is caused by the internal pressure when the flow path is opened during use. It is possible to provide a foam ejection container that does not leak from the nozzle to the outside.

It is sectional drawing in the state in which the nozzle head was made into the open position of the foam ejection container which is one embodiment of this invention. It is sectional drawing in the state in which the nozzle head was made into the closed position of the foam ejection container shown in FIG. It is a perspective view which shows the detail of a non-return valve. It is explanatory drawing which shows the positional relationship of a non-return valve and the pushing-down part in the state shown in FIG. It is sectional drawing in the state in which the accommodation space of the container main body of the foam ejection container shown in FIG. 1 was connected outside via the open channel | path. It is explanatory drawing which shows the positional relationship of a non-return valve and a pushing-down part in the state shown in FIG. It is explanatory drawing which shows the positional relationship of a non-return valve and the pushing-down part in the state shown in FIG. It is a perspective view of the modification of the check valve shown in FIG. It is explanatory drawing which shows the positional relationship of the protrusion and pushing-down part which are shown in FIG. 8 in the state by which the nozzle head was made into the closed position.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  The foam ejection container 1 which is one embodiment of the present invention shown in FIG. 1 is also called a squeeze foamer, and includes the contents of various liquid detergents such as shampoos, body soaps, hand soaps, facial cleansers, and hairdressing agents While containing a liquid, the said content liquid is ejected in foam form.

  The foam ejection container 1 includes a container body 10. The container main body 10 includes a cylindrical mouth portion 11 having an upper opening and a body portion 12 connected to the mouth portion 11, and the inside thereof is a housing space S <b> 1 that contains the content liquid. The container body 10 is made of a synthetic resin, and its body part 12 is flexible. By compressing (squeezing) the body part 12, the volume of the storage space S1 is reduced, and the interior of the container body 10 is added. Can be pressed.

  A mounting cap 20 is mounted on the mouth portion 11 of the container body 10. For example, the mounting cap 20 made of resin has a cylindrical outer peripheral wall 21 surrounding the mouth portion 11 of the container body 10, and a female screw portion 21 a provided on the inner peripheral surface of the outer peripheral wall 21 is the mouth portion 11. It is screwed and fixed to the mouth part 11 of the container main body 10 by screwing to a male screw part 11 a provided on the outer peripheral surface of the container body 10. A seal cylinder portion 22 is provided coaxially and integrally on the inner side of the outer peripheral wall 21, and the seal cylinder portion 22 is fitted inside the mouth portion 11, whereby a fitting portion between the mounting cap 20 and the mouth portion 11 is sealed. As a result, liquid leakage from the portion is prevented.

  A small protrusion 11b and a large protrusion 11c are provided at the base of the mouth portion 11 with an interval in the circumferential direction, and a detent rib 21b corresponding to the protrusions 11b and 11c is provided at the lower end portion of the outer peripheral wall 21. It has been. When the mounting cap 20 is screwed into the mouth portion 11, just before the screwing is finished, the rotation-preventing rib 21b gets over the small projection 11b and is disposed between the small projection 11b and the large projection 11c. 11 is held against rotation.

  In the illustrated case, the mounting cap 20 is fixed to the mouth portion 11 of the container body 10 by screw connection, but the mounting cap 20 may be fixed to the mouth portion 11 of the container body 10 by undercutting. it can.

  The mounting cap 20 is integrally provided with a cylindrical flow tube portion 23 that protrudes upward on the inner side of the seal tube portion 22. In addition, a partition ring portion 24 formed in an annular shape with a raised inner side is coaxially and integrally provided on the inner side of the flow tube portion 23 of the mounting cap 20. The connecting portion between the flow tube portion 23 and the partition ring portion 24 is cut out in an arc shape, whereby a return port 25 for the content liquid is formed between the flow tube portion 23 and the partition ring portion 24. The return port 25 allows the accommodation space S1 of the container body 10 to communicate with the outer portion of the mounting cap 20. Further, the inside of the partition ring portion 24 is a content liquid discharge port 26.

  A partition portion 27 is integrally provided below the partition ring portion 24 of the mounting cap 20. Inside the partition portion 27, a mixing chamber 28 connected to the discharge port 26 is partitioned. In addition, an air introduction port 29 and a liquid introduction port 30 that communicate the mixing chamber 28 and the accommodation space S <b> 1 are provided at the bottom of the partition portion 27. In the case shown in the drawing, an insertion tube portion 31 that protrudes downward from the bottom surface of the partition portion 27 is integrally provided, and a tube that is inserted into the insertion tube portion 31 and extends to the bottom portion of the container body 10. The liquid inlet 30 is constituted by 32. In addition, a plurality of vertical ribs are provided on the inner peripheral surface of the insertion tube portion 31 at intervals in the circumferential direction, and these vertical ribs provide a space between the inner peripheral surface of the insertion tube portion 31 and the outer peripheral surface of the tube 32. The air introduction port 29 is configured by the provided gap. With this configuration, the content liquid in the storage space S1 is introduced into the mixing chamber 28 from the liquid inlet 30 formed by the tube 32, and the air in the storage space S1 enters the mixing chamber 28 via the air inlet 29. be introduced. The content liquid introduced from the liquid introduction port 30 and the air introduced from the air introduction port 29 are mixed from the side opening of the conical intake portion 33 provided to protrude upward on the inner surface of the bottom portion. It is introduced into the chamber 28 and mixed in the mixing chamber 28.

  A pair of foam members 34 are mounted inside the partition portion 27 so as to be located on the upper side (downstream side) of the mixing chamber 28. As these foaming members 34, for example, those having a structure in which a mesh is fixed to the end face of the ring are used, and are fitted and fixed to the inner surface of the partition portion 27 in a posture in which the meshes are directed to the opposite sides. Note that the foam member 34 is not limited to a structure having a ring and a mesh, and various structures can be used according to the type of content liquid. Also, the number of foam members 34 can be variously changed according to the type of the content liquid.

  A nozzle head 40 is mounted on the mounting cap 20. The nozzle head 40 has a nozzle 41, and the content liquid foamed through the foaming member 34 is discharged from the discharge port 26 and ejected to the outside from the opening of the nozzle 41.

  The mounting cap 20 is integrally provided with a nozzle mounting cylinder 35, and the nozzle head 40 is mounted on the nozzle mounting cylinder 35 by screw connection. More specifically, the nozzle head 40 made of, for example, a resin includes a cylindrical mounting cylinder portion 42 disposed outside the nozzle mounting cylinder portion 35 and is provided on the inner peripheral surface of the mounting cylinder portion 42. The female screw portion 42 a is attached to the mounting cap 20 by being screwed to a male screw portion 35 a provided on the outer peripheral surface of the nozzle mounting cylinder portion 35. With such a configuration, the nozzle head 40 rotates between the open position shown in FIG. 1 and the closed position shown in FIG. 2 with respect to the mounting cap 20 around the axis of the mouth 11 of the container body 10. It is free. Since the nozzle head 40 is mounted on the mounting cap 20 by screw connection, when the nozzle head 40 is rotated from the closed position toward the open position, the lead angle of the female screw portion 42a and the male screw portion 35a is set with respect to the mounting cap 20. It will move upward with a corresponding pitch.

  The nozzle head 40 includes a dome-shaped head main body 43 that is continuous with the mounting cylinder portion 42, and the nozzle 41 protrudes obliquely upward from the head main body 43. The nozzle 41 communicates with the discharge port 26 and the return port 25 of the mounting cap 20 and opens to the outside.

  The nozzle head 40 is integrally provided with a discharge port opening / closing part 44. The discharge port opening / closing part 44 is formed in a cylindrical shape and protrudes downward from the inner surface of the head main body 43 toward the discharge port 26, and its outer diameter is the same as the inner diameter of the discharge port 26. The discharge port opening / closing section 44 fits inside the discharge port 26 to close the discharge port 26 when the nozzle head 40 is in the closed position (the state shown in FIG. 2), and discharges when the nozzle head 40 is in the open position. It moves above the outlet 26 to open the outlet 26 (state shown in FIG. 1).

  Further, the nozzle head 40 is provided with a return opening / closing part 45. The return port opening / closing part 45 is formed in a cylindrical shape and projects downward from the outer peripheral edge portion of the head body 43 toward the return port 25, and the outer diameter dimension thereof is the same as the inner diameter dimension of the flow tube part 23, The inner diameter dimension is equivalent to the outer diameter dimension of the partition ring portion 24. When the nozzle head 40 is in the closed position, the return port opening / closing unit 45 is disposed in the gap between the flow tube portion 23 and the partition ring portion 24 to close the gap, that is, the return port 25 (the state shown in FIG. 2). When the nozzle head 40 is in the open position, it moves upward from between the flow tube portion 23 and the partition ring portion 24 to open the return port 25 (the state shown in FIG. 1).

  The nozzle head 40 is provided with a nozzle opening / closing mechanism 50. The nozzle opening / closing mechanism 50 includes a nozzle opening / closing valve 51 disposed inside the nozzle 41, and a control wall 52 that controls opening / closing of the nozzle opening / closing valve 51. The nozzle opening / closing valve 51 is provided integrally with a resin cap body 53 that is fitted into the nozzle 41 from the tip side and forms the opening 41 a of the nozzle 41, and is accommodated inside the cap body 53 and the nozzle 41. The nozzle 41 is accommodated so as to be movable forward and backward toward the opening 41a of the nozzle 41. A spring portion 54 is integrally provided between the cap body 53 and the base portion 51 a of the nozzle opening / closing valve 51, and the nozzle opening / closing valve 51 is urged toward the direction away from the opening 41 a of the nozzle 41 by the spring portion 54. ing.

  On the other hand, the control wall 52 is configured as an arcuate wall protruding upward from the upper surface of the partition ring portion 24 of the mounting cap 20. The control wall 52 has a shape in which the thickness in the radial direction gradually increases from one side to the other side in the circumferential direction, that is, the radial distance of the outer peripheral surface with respect to the axis of the nozzle head 40 gradually increases. Yes.

  The base portion 51 a of the nozzle opening / closing valve 51 is in contact with the outer peripheral surface of the control wall 52 while being pressed by the spring portion 54. When the nozzle head 40 is in the open position, as shown in FIG. 1, the base 51 a of the nozzle on-off valve 51 abuts on the outer peripheral surface of the portion where the thickness of the control wall 52 is thin, and the tip 51 b is the opening 41 a of the nozzle 41. It is set as the open position which opens. On the other hand, when the nozzle head 40 is rotated to the closed position, the base portion 51a of the nozzle opening / closing valve 51 abuts on the outer peripheral surface of the thick portion of the control wall 52. It is pushed toward the opening 41 a by the control wall 52 against the spring force, and its tip 51 b is set to a closing position where the opening 41 a of the nozzle 41 is closed. As described above, the nozzle opening / closing mechanism 50 operates to open the opening 41a of the nozzle 41 when the nozzle head 40 is in the open position, and close the opening 41a of the nozzle 41 when the nozzle head 40 is in the closed position.

  A check valve 60 is provided at the return port 25. The check valve 60 includes a cylindrical holding portion 61 that is fitted and fixed to the outer peripheral surface of the partition portion 27, and an annular and membrane-like sealing film portion 62 that extends radially outward from the outer peripheral surface of the holding portion 61. Have.

  The sealing film portion 62 elastically contacts the downward surface (inner surface) 36 of the mounting cap 20 from the lower side at the upper end of the outer peripheral edge 63 formed in the cylindrical shape to close the return port 25. The check valve 60 regulates the flow of air and content liquid from the accommodation space S1 of the container body 10 to the nozzle 41 through the return port 25, while accommodating the container body 10 from the nozzle 41 through the return port 25. It functions to allow the flow of air and content liquid into the space S1.

  As shown in FIG. 3, a stepped portion 64 is provided on the upper surface of the check film 60 facing the return port 25 side of the seal film portion 62. In the case shown in the figure, the stepped portion 64 is configured by denting a part of the seal film portion 62 in the axial direction within a predetermined angle range centered on the axis. The step portion 64 has a pair of inclined portions 64a and a flat bottom surface portion 64b between the inclined portions 64a. The inclination angle of the inclined portion 64a is made larger than the lead angle of the male screw portion 35a and the female screw portion 42a for screw-connecting the nozzle head 40 to the mounting cap 20.

  A push-down portion 65 is integrally provided at the lower end of the return opening / closing portion 45. The push-down portion 65 is formed in a plate shape that is thinner than the radial interval between the flow tube portion 23 and the partition ring portion 24 and narrower in the circumferential direction than the bottom surface portion 64b of the stepped portion 64. It protrudes downward from the lower end of the part 45 and is inserted through the return port 25. When the nozzle head 40 is in the closed position, as shown in FIG. 4, the push-down portion 65 is disposed so as to face the bottom surface portion 64 b of the stepped portion 64 with a slight axial interval.

  When the nozzle head 40 is rotated from the closed position toward the open position, the inclination angle of the inclined portion 64a is made larger than the lead angle of the screw connection of the nozzle head 40 with respect to the mounting cap 20, so that FIGS. As shown, the push-down portion 65 abuts against the inclined portion 64a of the step portion 64 before the discharge port 26 and the return port 25 are opened by the discharge port opening / closing portion 44 and the return port opening / closing portion 45. The part 62 is pushed down, that is, the outer peripheral edge 63 is pushed down in the direction away from the downward surface 36 of the mounting cap 20. Thus, the seal film part 62 is pushed downward by the push-down part 65, whereby the outer peripheral edge 63 of the seal film part 62 is separated from the downward surface 36 of the mounting cap 20 and is closed by the return opening / closing part 45. A space S <b> 2 between the return port 25 in the state and the check valve 60 is communicated with the accommodation space S <b> 1 of the container body 10.

  When the nozzle head 40 reaches the open position, as shown in FIG. 7, the push-down portion 65 is separated from the seal film portion 62 and the check valve 60 returns to a state in which the return port 25 is closed. .

  When the seal film portion 62 is pushed downward by the push-down portion 65, the space S2 between the return port 25 and the check valve 60 closed by the return port opening / closing portion 45 is communicated with the outside. An open passage 70 is provided between the distribution cylinder portion 23 and the return opening / closing portion 45. The open passage 70 includes a first groove portion 71 provided on the inner peripheral surface of the flow tube portion 23 and connected to the space S <b> 2, and a second groove portion 72 provided on the outer peripheral surface of the return port opening / closing portion 45. When the nozzle head 40 is in the open position, as shown in FIG. 1, the first groove portion 71 and the second groove portion 72 are axially displaced from each other, and the open passage 70 is in a closed state that does not allow the space S2 to communicate with the outside. . Even when the nozzle head 40 is in the closed position, as shown in FIG. 2, the first groove 71 and the second groove 72 are communicated with each other, but the upper end of the second groove 72 is closed. Thus, the open passage 70 is closed so that the space S2 does not communicate with the outside. On the other hand, when the nozzle head 40 is rotated by a predetermined angle from the closed position and the seal film part 62 is pushed downward by the push-down part 65, as shown in FIG. The second groove portion 72 communicates with each other, and the upper end of the second groove portion 72 communicates with the outside via the space between the mounting cap 20 and the nozzle head 40 and the screw coupling portions thereof, so that the open passage 70 is The space S2 is opened to communicate with the outside.

  Next, the usage method of the foam ejection container 1 of such a structure is demonstrated.

  As shown in FIG. 1, by setting the nozzle head 40 to the open position, the discharge port 26 and the return port 25 are opened, and the outer peripheral edge 63 of the seal film portion 62 of the check valve 60 is the downward surface 36 of the mounting cap 20. The opening passage 70 is closed and the opening 41a of the nozzle 41 is opened by the nozzle opening / closing mechanism 50, so that the foam ejection container 1 can eject the content liquid by squeezing the body portion 12. Can be used.

  In the state where the nozzle head 40 is in the open position, the foam-like content liquid can be ejected from the opening 41 a of the nozzle 41 by squeezing the body portion 12 of the container body 10. That is, when the body portion 12 is squeezed, the content liquid stored in the storage space S1 of the container body 10 is introduced into the mixing chamber 28 via the tube 32 and the air in the container body 10 passes through the air inlet 29. The mixture is introduced into the mixing chamber 28, and the content liquid is mixed with air inside the mixing chamber 28 to foam and foam. Further, the foamed content liquid passes through the foaming member 34, reaches the nozzle 41 through the discharge port 26 while being further foamed and foamed, and is jetted out from the opening 41 a of the nozzle 41 to the outside. Is done.

  When the squeezing of the body part 12 is released after the content liquid is ejected, the body part 12 is restored to its original shape, so that a negative pressure is generated in the container body 10, and the check valve 60 is opened by this negative pressure. The liquid content remaining inside the nozzle 41 is drawn into the container body 10 through the return port 25 together with the air (outside air) sucked from the nozzle 41. By such a function, also called a suck back function, the content liquid remaining inside the nozzle 41 after the ejection is drawn into the container body 10 together with the air, and the content liquid drips outside from the opening 41a of the nozzle 41. Can be prevented.

  On the other hand, when not in use, as shown in FIG. 2, the nozzle head 40 is rotated in the tightening direction with respect to the mounting cap 20 to the closed position, whereby the discharge port 26 and the return port 25 are moved. It is blocked by the discharge port opening / closing part 44 and the return port opening / closing part 45 to block the flow path between the nozzle 41 and the storage space S1 of the container body 10 and to make this foam ejection container 1 unusable. . At this time, the nozzle opening / closing mechanism 50 closes the opening 41a of the nozzle 41 and also closes the open passage 70.

  As described above, in this foam ejection container 1, the body 12 is not used when the foam ejection container 1 is disabled by a simple operation of rotating the nozzle head 40 from the open position to the closed position. Even if it is squeezed unexpectedly, the liquid in the container body 10 can be reliably prevented from leaking outside through the nozzle 41.

  By the way, as described above, the foam ejection container 1 is configured such that the flow path between the nozzle 41 and the accommodation space S1 of the container body 10 can be blocked by setting the nozzle head 40 to the closed position. When the container body 10 is warmed due to an increase in temperature, the internal pressure in the container body 10 may increase. When the nozzle 41 is opened while the internal pressure is increased in this way, the content liquid in the container main body 10 may be pumped by the internal pressure and leak from the opening 41a of the nozzle 41 to the outside. However, in this foam ejection container 1, when opening the nozzle 41, the internal pressure is released to the outside as described below, and the liquid in the container body 10 is prevented from leaking from the tip of the nozzle 41 to the outside. Can do.

  That is, when the nozzle head 40 is rotated from the closed position toward the open position, before the discharge port 26 and the return port 25 are opened by the discharge port opening / closing unit 44 and the return port opening / closing unit 45, FIG. 6, the push-down portion 65 abuts on the inclined portion 64 a of the step portion 64, and the seal film portion 62 of the check valve 60 is pushed down, and the outer peripheral edge 63 thereof extends from the downward surface 36 of the mounting cap 20. It leaves | separates and the space S2 is connected to the accommodation space S1 of the container main body 10. At this time, the space S <b> 2 communicates with the outside through the open passage 70. Therefore, since the storage space S1 of the container body 10 communicates with the outside through the space S2 and the open passage 70, the internal pressure of the storage space S1 can be released to the outside.

  On the other hand, when the nozzle head 40 rotates, the push-down portion 65 abuts on the inclined portion 64a of the stepped portion 64 for a moment to release the seal of the outer peripheral edge 63 of the seal film portion 62, and then the nozzle When the head 40 further rotates and reaches the open position, the head 40 moves to the position shown in FIG. 7, moves away from the seal film portion 62, and returns the function of the check valve 60. Therefore, when the nozzle head 40 is in the open position, the foam ejection container 1 is in a usable state in which the content liquid can be ejected by squeezing the body portion 12. In this way, the bubble ejection container 1 can be made usable while releasing the internal pressure in the container body 10 by a simple operation of rotating the nozzle head 40 from the closed position to the open position.

  FIG. 8 is a perspective view of a modified example of the check valve shown in FIG. 3, and FIG. 9 is an explanatory view showing the positional relationship between the protrusion and the push-down portion shown in FIG. 8 when the nozzle head is in the closed position. is there. In FIGS. 8 and 9, members corresponding to those described above are denoted by the same reference numerals.

  The step part 64 provided in the check valve 60 is not limited to a configuration in which a part of the seal film part 62 is recessed as shown in FIG. 3, but is provided on the upper surface of the seal film part 62 as shown in FIG. The projection 66 may be used. In this case, the protrusion 66 constituting the stepped portion 64 has a trapezoidal shape having a pair of inclined portions 66a and a flat top surface 66b, and the inclined angle of the inclined portion 66a is screwed to the mounting cap 20 by screw connection. The lead angle of the male screw portion 35a and the female screw portion 42a to be made is larger.

  When the nozzle head 40 is in the closed position, as shown in FIG. 9, the push-down portion 65 is disposed so as to be adjacent to the protrusion 66 and to face the upper surface of the seal film portion 62 with a slight gap.

  When the nozzle head 40 is rotated from the closed position toward the open position, the inclination angle of the inclined portion 66a is made larger than the lead angle of the screw coupling of the nozzle head 40 to the mounting cap 20, so that the push-down portion 65 is Before the discharge port 26 and the return port 25 are opened by the discharge port opening / closing part 44 and the return port opening / closing part 45, the seal film part 62 is brought into contact with the inclined part 66a of the step part 64 downward, that is, the outer peripheral edge 63 thereof. Push down in a direction away from the downward surface 36 of the mounting cap 20. As described above, the check valve 60 having the stepped portion 64 constituted by the protrusion 66 also pushes the seal film portion 62 downward by the push-down portion 65 so that the outer peripheral edge 63 of the seal film portion 62 is attached to the mounting cap 20. The space S <b> 2 can be communicated with the accommodation space S <b> 1 of the container body 10 away from the downward surface 36.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, the outer peripheral edge 63 of the seal film portion 62 of the check valve 60 is brought into contact with the downward surface 36 of the mounting cap 20, but if the return port 25 can be closed, The outer peripheral edge 63 of the seal film part 62 may be brought into contact with the other inner surface of the mounting cap 20.

  In addition, the configuration of the stepped portion 64 provided in the check valve 60 is not limited to the one using the above-described dent and trapezoidal projection 66, and for example, uses a curved surface-like dent or arc-shaped projection. The shape can be variously changed.

  Furthermore, the air inlet port 29 and the liquid inlet port 30 provided in the partition part 27 can have various configurations as long as they have the functions.

DESCRIPTION OF SYMBOLS 1 Foam ejection container 10 Container body 11 Mouth part 11a Male thread part 11b Small protrusion 11c Large protrusion 12 Body part 20 Mounting | wearing cap 21 Outer peripheral wall 21a Female thread part 21b Anti-rotation rib 22 Seal cylinder part 23 Distribution | circulation cylinder part 24 Partition ring part 25 Return port 26 discharge port 27 partition part 28 mixing chamber 29 air introduction port 30 liquid introduction port 31 insertion cylinder part 32 tube 33 intake part 34 foaming member 35 nozzle mounting cylinder part 35a male thread part 36 downward surface (inner surface)
40 Nozzle head 41 Nozzle 41a Opening 42 Mounting cylinder part 42a Female thread part 43 Head main body 44 Discharge opening / closing part 45 Return opening opening / closing part 50 Nozzle opening / closing mechanism 51 Nozzle opening / closing valve 51a Base 51b Tip 52 Control wall 53 Cap body 54 Spring part 60 Check valve 61 Holding part 62 Sealing film part 63 Outer peripheral edge 64 Step part 64a Inclined part 64b Bottom face part 65 Push-down part 66 Protrusion 66a Inclined part 66b Top surface 70 Opening passage 71 First groove part 72 Second groove part S1 Storage space S2 Space

Claims (5)

A container body having a flexible barrel, the inside of which is a storage space for the content liquid;
A mounting cap mounted on the mouth portion of the container body, comprising a discharge port and a return port for the content liquid;
A nozzle head that includes a nozzle connected to the discharge port and the return port, and is mounted on the mounting cap by screw connection and is rotatable between an open position and a closed position;
A discharge port opening / closing part provided in the nozzle head, closing the discharge port when the nozzle head is in a closed position, and opening the discharge port when the nozzle head is in an open position;
A return port opening / closing part provided in the nozzle head, closing the return port when the nozzle head is in a closed position, and opening the return port when the nozzle head is in an open position;
A partition section provided in the mounting cap and having a mixing chamber connected to the discharge port and having an air inlet and a liquid inlet at the bottom connecting the mixing chamber to the storage space;
A holding portion fixed to the outer peripheral surface of the partition portion, and a seal film portion extending radially outward from the outer peripheral surface of the holding portion and contacting the inner surface of the mounting cap to close the return port, A check valve having a stepped portion on the upper surface of the sealing film portion;
Provided in the return port opening / closing portion, the nozzle head rotates from the closed position toward the open position, and contacts the stepped portion before the discharge port and the return port are opened. A push-down portion that pushes down in a direction away from the inner surface of the mounting cap;
A space between the return port and the check valve that is closed by the return port opening / closing portion when the pressing portion pushes down the seal film portion in a direction away from the inner surface of the mounting cap. An open passage that communicates with the foam ejection container.   The foam ejection container according to claim 1, wherein the step portion is configured by denting the seal film portion in an axial direction within a predetermined angle range centering on an axis of the seal film portion.   The foam ejection container according to claim 1, wherein the step portion is constituted by a protrusion provided on an upper surface of the seal film portion.   The foam ejection container according to any one of claims 1 to 3, wherein an outer peripheral edge of the seal film portion is in contact with a downward surface of the mounting cap.   The foam ejection container according to claim 1, further comprising a nozzle opening / closing mechanism that closes the nozzle when the nozzle head is in a closed position and opens the nozzle when the nozzle head is in an open position. .

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