JP6184900B2 - 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 By compressing the liquid, the foaming member is allowed to pass through the foaming member while mixing the content liquid with air to be foamed 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 contents from the container main body toward the nozzle are provided in the return flow path. A check valve that restricts the flow of the liquid and allows the flow of the content liquid from the nozzle into the container body, and the content liquid remaining in the nozzle due to the negative pressure generated in the container body when the squeezing is released A bubble jetting container is described in which it is drawn back into the container body through the 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 body, the internal solution in the container 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 is equipped with a flexible body, a container body whose inside is a storage space for the content liquid, and a circulation port for the content liquid, which is attached to the mouth of the container body A cap, a nozzle connected to the flow port, and an open / close lid, and a closed position where the open / close lid closes the flow port by being screwed to the mounting cap, and the open / close lid is connected to the flow port. A nozzle head that can rotate between an open position that opens upward and opens the flow port, and a mixing chamber that is fixed to the nozzle head at the upper end and is connected to the flow port, and has the mixing chamber. A partition member provided at the bottom with an air introduction hole and a liquid introduction hole connected to the storage space, a return channel formed between the mounting cap and the partition member, and the flow port connected to the storage space; and the partition Fixed to the outer peripheral surface of the member A cylindrical holding portion that is formed in an annular and film shape that extends radially outward from the outer peripheral surface of the holding portion, and contacts the inner surface of the mounting cap at the outer peripheral edge when the nozzle head is in the open position; And a check valve provided with a sealing film portion that is separated from the inner surface when the nozzle head is in a closed position.

  According to the present invention, in the above configuration, when the nozzle head is in the open position, it is preferable that an outer peripheral edge of the seal film portion abuts a downward step surface of the mounting cap.

  According to the present invention, in the above configuration, a stopper cylinder provided on the mounting cap coaxially with the flow port, and a pair of stopper pieces provided on the outer peripheral surface of the stopper cylinder with a predetermined interval in the circumferential direction. An outer surface having a pair of stoppers and a convex piece provided on the nozzle head and disposed in a movement range between the pair of stopper pieces, and facing the opposite side of the movement range of the pair of stopper pieces. However, it is preferable that each of them is formed on a curved surface that decreases in diameter as it moves away from the moving range.

  According to the present invention, in the above-described configuration, the pair of stopper pairs are provided on the outer peripheral surface of the stopper cylinder portion so as to be shifted from each other by 180 degrees in the circumferential direction, and the nozzle head includes a pair of stopper pairs corresponding to the pair of stopper pairs. It is preferable that the convex pieces are provided 180 degrees apart from each other in the circumferential direction.

  According to the present invention, in the above configuration, a pair of double thread portions extending in an angular range of 180 degrees in the circumferential direction are provided on the outer circumferential surface of the nozzle mounting cylinder portion of the mounting cap so as to be shifted from each other by 180 degrees in the circumferential direction. Preferably, the nozzle head is provided with a pair of protrusions each including a pair of engaging protrusions that are screw-coupled to the double threaded portion, and are 180 degrees apart from each other in the circumferential direction.

  According to the present invention, when the nozzle head is in the closed position, the outer peripheral edge of the seal film portion of the check valve is separated from the inner surface of the mounting cap so that the housing space of the container body communicates with the circulation port. When the nozzle head is rotated from the closed position to the open position in the internal pressure rising state, the internal pressure in the container body can be released from the return flow path to the outside. Therefore, even when the flow path can be closed between the nozzle and the container body when not in use, the internal solution in the container body leaks out of the nozzle due to internal pressure when the flow path is opened during use. Can be prevented.

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 which follows the AA line in FIG. It is a side view of the mounting | wearing cap shown in FIG. (A) 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. 1, (b) is sectional drawing which follows the BB line in the same figure (a). (A) is sectional drawing in the state in which the nozzle head was made into the intermediate position of an open position and a closed position of the foam ejection container shown in FIG. 1, (b) is a stopper mechanism in the state of the same figure (a). It is a cross-sectional view which shows this state.

  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.

  As shown in FIGS. 1 and 2, the foam ejection container 1 includes a container body 10. The container body 10 includes a cylindrical mouth portion 11 having an upper opening and an elliptic cylindrical body portion 12 connected to the mouth portion 11, and the inside thereof is an accommodation space S for containing the content liquid. The container body 10 is made of a synthetic resin, and its body part 12 has flexibility. By compressing (squeezing) the body part 12, the storage space S is reduced, and the inside of the container body 10 is added. Can be pressed.

  As shown in FIG. 1, 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 tube portion 23 is provided coaxially and integrally on the inner side of the outer peripheral wall 21 via a flange portion 22, and the seal tube portion 23 is fitted inside the mouth portion 11, so that the mounting cap 20, the mouth portion 11, The fitting portion is sealed to prevent liquid leakage from the portion.

  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 seal cylinder portion 23 extends to the upper side with respect to the flange portion 22, and a step portion 24 extending inward in the radial direction is integrally provided at an upper end portion thereof. The inner surface of the step portion 24 facing downward in the figure is a downward step surface 24a formed flat and annular.

  On the inner peripheral edge of the stepped portion 24, a stopper cylinder 25 extending from the inner peripheral edge upward in the figure is integrally provided. The stopper cylinder 25 is formed in a cylindrical shape and is arranged coaxially with the outer peripheral wall 21.

  A distribution cylinder part 26 is integrally provided inside the stopper cylinder part 25. The distribution cylinder part 26 is formed in a cylindrical shape coaxial with the stopper cylinder part 25, and is connected to the inner peripheral surface of the stopper cylinder part 25 at the lower end part whose diameter is enlarged in a flange shape. The inner side of the distribution cylinder portion 26 is a content liquid distribution port 26 a, and the distribution port 26 a communicates with the port 11 of the container body 10, that is, the accommodation space S. Therefore, the liquid and air in the storage space S of the container body 10 can flow out of the mounting cap 20 through the circulation port 26a, and can also enter the outside air or a nozzle 36 described later. The remaining content liquid can flow into the accommodation space S from the outside of the mounting cap 20 through the circulation port 26a.

  A nozzle mounting cylinder portion 27 is integrally provided on the upper surface of the flange portion 22 of the mounting cap 20. The nozzle mounting cylinder portion 27 is formed in a cylindrical shape that is coaxial with the outer peripheral wall 21 and has a smaller diameter than the outer peripheral wall 21, and protrudes upward from the upper surface of the flange portion 22.

  A nozzle head 30 is attached to the attachment cap 20. For example, the nozzle head 30 made of resin includes a cylindrical cover portion 31 having an outer diameter equivalent to that of the outer peripheral wall 21 of the mounting cap 20 and a cap shape having a dome-shaped top wall 32 connected to the cover portion 31. Is formed.

  The nozzle head 30 is rotatably attached to the mounting cap 20 by being screw-coupled to the nozzle mounting cylinder portion 27 of the mounting cap 20 on the inner peripheral surface of the cover portion 31. More specifically, a pair of double threaded portions 28 are provided on the outer peripheral surface of the nozzle mounting cylinder portion 27 of the mounting cap 20 so as to be shifted from each other by 180 degrees in the circumferential direction, and the inner periphery of the cover portion 31 of the nozzle head 30 is provided. The surface is provided with a pair of protrusions 33 which are shifted from each other by 180 degrees in the circumferential direction, and these protrusions 33 are screw-coupled to the corresponding double threaded screw portions 28, respectively. As shown in FIG. 3, each of the pair of double threaded portions 28 includes an upper thread 28a and a lower thread 28b that extend in an angular range of 180 degrees in the circumferential direction along the outer peripheral surface of the nozzle mounting cylinder 27. A portion of the upper screw thread 28a in the range of about 90 degrees from the screw-side tip is formed in a shape extending horizontally along the circumferential direction and connected to the screw-side tip of the lower screw 28b. Yes. On the other hand, as shown in FIG. 1, the pair of protrusions 33 provided on the inner peripheral surface of the cover portion 31 includes a pair of engaging protrusions 33 a and 33 b arranged at predetermined intervals in the vertical direction. The upper engaging projections 33a of the projections 33 are engaged with the upper threads 28a of the corresponding double threaded screw portions 28 from above, and the lower engaging projections 33b of each pair of projections 33 are respectively below the corresponding double threaded screw portions 28. The screw thread 28b is engaged from below.

  With such a configuration, the nozzle head 30 is mounted on the mounting cap 20 by screw connection and is rotatable with respect to the mounting cap 20, but the rotation range is restricted to an angle range of 90 degrees by the stopper mechanism. Has been. The stopper mechanism can be configured as follows, for example.

  As shown in FIG. 2, a pair of stoppers 29 are provided on the outer peripheral surface of the stopper cylinder portion 25 of the mounting cap 20 so as to be shifted from each other by 180 degrees in the circumferential direction. Each of these stopper pairs 29 is provided with a pair of stopper pieces 29a arranged at an interval of about 90 degrees in the circumferential direction. On the other hand, a cylindrical convex piece cylinder portion 34 is integrally provided inside the cover portion 31 of the nozzle head 30, and a pair of stoppers 29 are provided on the inner peripheral surface of the convex piece cylinder portion 34. A corresponding pair of convex pieces 35 are integrally provided. These convex pieces 35 are provided so as to be shifted from each other by 180 degrees in the circumferential direction, and project from the inner circumferential surface of the convex piece cylindrical portion 34 inward in the radial direction between the pair of stopper pieces 29a of the corresponding stopper pair 29. It is arranged in the movement range R.

  When the nozzle head 30 rotates with respect to the mounting cap 20, each convex piece 35 moves in the movement range R along the circumferential direction, and when the nozzle head 30 reaches the closed position where it is most tightened with respect to the mounting cap 20. Each convex piece 35 abuts against one stopper piece 29a of the corresponding stopper pair 29, and further rotation is restricted. On the other hand, when the nozzle head 30 is rotated 90 degrees in the loosening direction from the closed position to reach the open position, each convex piece 35 comes into contact with the other stopper piece 29a of the corresponding stopper pair 29 and the nozzle head 30 Further rotation is restricted.

  With such a configuration, the nozzle head 30 is 90 degrees between the open position shown in FIG. 2 and the closed position shown in FIG. 4 with respect to the mounting cap 20 around the axis of the mouth 11 of the container body 10. It is freely rotatable in the angle range. Since the nozzle head 30 is mounted on the mounting cap 20 by screw connection, the nozzle head 30 moves up and down with respect to the mounting cap 20 when rotated between the closed position and the open position.

  The outer surface of the stopper piece 29a facing away from the moving range is formed as a curved surface 29b whose diameter decreases as the distance from the moving range increases. Therefore, each convex piece 35 is arranged not in the movement range R between the stopper pieces 29a but in the range between the curved surfaces 29b and 29b of the stopper pieces 29a. Each of the convex pieces 35 is moved along the curved surface 29b of the stopper piece 29a so as to get over the stopper piece 29a by screwing to the corresponding double threaded portion 28 and rotating the nozzle head 30 in the tightening direction. The corresponding stopper pair 29 can be disposed in the movement range R. At this time, since the screw portion provided on the outer peripheral surface of the nozzle mounting cylinder portion 27 of the mounting cap 20 is configured by a pair of double threaded screw portions 28 that are shifted from each other by 180 degrees in the circumferential direction, By dropping the nozzle head 30 downward with respect to the mounting cap 20 to a position where the mating protrusion 33a contacts the horizontal tip of the upper thread 28a, each convex piece 35 can be engaged with the stopper piece 29a. The nozzle head 30 can be rotated.

  A nozzle 36 is provided integrally with the nozzle head 30. The nozzle 36 is formed in an elliptic cylinder shape and protrudes slightly upward from the upper side of the partition wall 37 provided inside the nozzle head 30 to the side of the cover portion 31. The partition wall 37 is provided with a pair of inflow / outflow holes 38, and the nozzle 36 communicates with the flow port 26 a of the mounting cap 20 through the outflow / inflow holes 38. In the illustrated case, the partition wall 37 is provided with a pair of inflow / outflow holes 38, but the number and shape thereof can be variously changed.

  A cylindrical opening / closing lid 39 is integrally provided on the lower surface of the partition wall 37 of the nozzle head 30. The open / close lid portion 39 is formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the flow tube portion 26. When the nozzle head 30 is in the closed position, the open / close cover portion 39 is fitted inside the flow tube portion 26 to close the flow port 26a. When the nozzle head 30 is in the open position, the flow port 26a is opened away from the flow port 26a. That is, the nozzle head 30 rotates between a closed position where the open / close lid 39 closes the flow port 26a and an open position where the open / close lid 39 is separated above the flow port 26a and opens the flow port 26a. It is possible.

  Reference numeral 40 denotes a seal tube portion that is fitted to the inner peripheral surface of the stopper tube portion 25 and closes the flow path between the flow port 26 a and the nozzle 36.

  A connecting tube portion 41 is integrally provided coaxially with the opening / closing lid portion 39 on the inner side of the opening / closing lid portion 39 of the partition wall 37 of the nozzle head 30, and a partition member 50 is fixed below the connecting tube portion 41. Yes. In the case shown in the figure, the partition member 50 is made of resin and is formed in a cylindrical shape having a vertically divided structure, and is fitted and fixed to the connection tube portion 41 at the upper end thereof. Accordingly, when the nozzle head 30 rotates between the open position and the closed position, the partition member rotates together with the nozzle head 30 and moves up and down with respect to the mounting cap 20 together with the nozzle head 30.

  A hole forming portion 51 is fitted and fixed to the lower end of the partition member 50, and the mixing chamber 52 is partitioned and formed inside the partition member 50 by fixing the hole forming portion 51. Further, the hole forming portion 51 forms an air introduction hole 53 and a liquid introduction hole 54 on the lower end side of the partition member 50 together with the partition member 50. The air introduction hole 53 communicates the mixing chamber 52 with the accommodation space S (inside the container body 10), and the air in the accommodation space S is introduced into the mixing chamber 52 through the air introduction hole 53. On the other hand, a tube 55 extending to the bottom of the container body 10 is connected to the liquid introduction hole 54, and the liquid introduction hole 54 communicates the mixing chamber 52 with the accommodation space S through the tube 55. Accordingly, the content liquid in the storage space S is introduced into the mixing chamber 52 via the tube 55 and the liquid introduction hole 54.

  The hole forming portion 51 is integrally provided with an umbrella-like body 56 for suppressing entry of the content liquid from the air introduction hole 53.

  Inside the partition member 50, a pair of foam members 57 are mounted on the upper side (downstream side) of the mixing chamber 52. As these foaming members 57, for example, a structure in which a mesh is fixed to an end face of a ring is used, and the mesh members are fitted and fixed inside the main body portion in a posture in which each mesh is directed to the opposite side. The foam member 57 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. The number of foam members 57 to be installed can be variously changed according to the type of content liquid.

  The inside of the partition member 50 on the upper side of the foam member 57 is a discharge flow path 58 connected to the mixing chamber 52. In order to connect the discharge flow path 58 to the flow port 26a, the partition member 50 has a pair of discharge holes. 59 is provided. In other words, the mixing chamber 52 communicates with the flow port 26 a via the discharge flow path 58 and the discharge hole 59, and further communicates with the nozzle 36 via the flow port 26 a and the inflow / outflow hole 38. The number and shape of the discharge holes 59 provided in the partition member 50 can be variously changed.

  A return flow path 60 defined between the inner peripheral surface of the mounting cap 20 and the outer peripheral surface of the partition member 50 is formed between the accommodation space S of the container body 10 and the nozzle 36, in addition to the discharge flow path 58. Is provided. That is, the circulation port 26 a communicates with the accommodation space S of the container body 10 through the return channel 60.

  A check valve 61 is provided in the return channel 60. The check valve 61 includes a cylindrical holding portion 61a fitted and fixed to the outer peripheral surface of the partition member 50, and an annular and membrane-like sealing film portion 61b extending radially outward from the outer peripheral surface of the holding portion 61a. Have.

  When the nozzle head 30 is in the open position, the seal film portion 61b elastically contacts the downward step surface (inner surface) 24a of the mounting cap 20 from the lower side at the outer peripheral edge thereof. In other words, the check valve 61 functions as a check valve when the nozzle head 30 is in the open position, so that air and content liquid are supplied from the storage space S of the container body 10 to the circulation port 26a through the return channel 60. In addition to restricting the flow, it operates to allow the flow of air and content liquid from the flow port 26a to the accommodation space S of the container body 10 through the return channel 60.

  On the other hand, when the nozzle head 30 is in the closed position, the check valve 61 moves downward with respect to the mounting cap 20 together with the nozzle head 30, and the outer peripheral edge of the seal film portion 61b faces downward as shown in FIG. The check valve 61 is separated from the step surface 24a and does not function. That is, when the nozzle head 30 is in the closed position, the accommodation space S of the container body 10 is in a state of being communicated with the circulation port 26 a through the return channel 60.

  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 30 to the open position, the opening / closing lid 39 is separated above the flow port 26a, the flow port 26a is opened, and the seal film portion 61b of the check valve 61 is removed. The peripheral edge comes into contact with the downward stepped surface 24a of the mounting cap 20, and the foam ejection container 1 is in a usable state in which the liquid content can be ejected by squeezing the squeeze portion 12. When the nozzle head 30 is in the open position, as shown in FIG. 2, the nozzle 36 is directed in a direction along the minor axis of the trunk portion 12 of the container body 10 having an elliptical cross section.

  In a state where the nozzle head 30 is in the open position, the foam-like content liquid can be ejected from the nozzle 36 by squeezing the body 12 of the container body 10. That is, when the body portion 12 is squeezed, the content liquid stored in the storage space S of the container body 10 is introduced into the mixing chamber 52 through the tube 55 and the liquid introduction hole 54 and the air in the container body 10 is changed. The air is introduced into the mixing chamber 52 through the air introduction hole 53, and the content liquid is mixed with air inside the mixing chamber 52 to be foamed and foamed. In addition, the foamed content liquid passes through the foaming member 57 and is discharged from the discharge hole 59 to the flow port 26a through the discharge flow path 58 while being further foamed and foamed. Then, the foam-like content liquid discharged to the circulation port 26 a reaches the nozzle 36 through the outflow / inflow hole 38, and is ejected to the outside from the opening of the nozzle 36.

  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 61 is opened by this negative pressure. The liquid content remaining inside the nozzle 36 is drawn into the container body 10 through the return channel 60 together with the air (outside air) sucked from the nozzle 36. By such a function, also called a suck back function, the content liquid remaining inside the nozzle 36 after the ejection is drawn into the container body 10 together with the air, and the content liquid hangs down from the opening of the nozzle 36 to the outside. Can be prevented.

  On the other hand, when not in use, as shown in FIG. 4, the nozzle head 30 is rotated 90 degrees with respect to the mounting cap 20 to the closed position, thereby closing the circulation port 26 a by the opening / closing lid 39. Thus, the communication between the nozzle 36 and the accommodation space S of the container body 10 is blocked, and the foam ejection container 1 can be made unusable. When the nozzle head 30 is in the closed position, the nozzle 36 is directed in a direction along the major axis of the trunk 12 of the container body 10 having an elliptical cross section.

  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 30 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 36.

  By the way, as described above, the foam ejection container 1 has a configuration in which the circulation port 26a can be closed by the opening / closing lid portion 39 by setting the nozzle head 30 to the closed position, and therefore the container in a state where the circulation port 26a is closed. When the main body 10 is warmed due to an increase in temperature or the like, the internal pressure in the container main body 10 may increase. However, in the foam ejection container 1, the internal pressure can be released to the outside as follows. That is, when the nozzle head 30 is rotated from the open position toward the closed position, the check valve 61 moves downward with respect to the mounting cap 20 together with the nozzle head 30, and the outer peripheral edge of the seal film portion 61b is mounted. Apart from the downward stepped surface 24 a of the cap 20, the storage space S of the container body 10 is communicated with the circulation port 26 a through the return channel 60. As a result, even when the nozzle head 30 is rotated from the closed position to the open position for use in the internal pressure rising state in the container body 10, as shown in FIG. When the position is between the open position and the open position, the opening / closing lid portion 39 is separated above the flow port 26a, the flow port 26a is opened, and the outer peripheral edge of the seal film portion 61b of the check valve 61 is a downward step in the mounting cap 20. The internal pressure in the container body 10 can be released from the return channel 60 to the outside by being separated from the surface 24a. Therefore, even if the nozzle head 30 is rotated from the closed position to the open position in the state where the internal pressure in the container body 10 is increased, the internal pressure in the container body 10 is released from the return channel 60 to the outside. It is possible to prevent the internal solution stored in S from being pushed by the internal pressure and pumped to the nozzle 36 through the mixing chamber 52, the discharge flow path 58, the discharge hole 59 and the flow port 26a, and leaking out from the nozzle 36 to the outside. .

  On the other hand, when the foam ejection container 1 is put into the use state again, the foam ejection container 1 can be switched to the usable state by a simple operation of simply rotating the nozzle head 30 from the closed position to the open position. it can. At this time, when the nozzle head 30 reaches from the closed position to the open position, as shown in FIG. 1, the outer peripheral edge of the seal film portion 61b of the check valve 61 comes into contact with the downward step surface 24a of the mounting cap 20, and the container The check valve 61 regulates the escape of the pressure in the main body 10 from the return flow path 60 to the outside. Therefore, the content liquid accommodated in the accommodation space S by the compression of the body portion 12 is pumped to the nozzle 36 through the mixing chamber 52, the discharge flow path 58, the discharge hole 59, and the circulation port 26a, and is externally foamed from the nozzle 36. Can be ejected.

  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 of the sealing film portion 61b of the check valve 61 is brought into contact with the downward step surface 24a of the mounting cap 20, but any portion that can close the return flow path 60 can be used. The outer peripheral edge of the sealing film 61b may be brought into contact with the other inner surface of the mounting cap 20.

  Moreover, the structure of the air introduction hole 53 and the liquid introduction hole 54 provided in the partition member 50, the structure of the check valve 61, and the like can be of various structures as long as they have the function.

DESCRIPTION OF SYMBOLS 1 Foam ejection container 10 Container main 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 Flange part 23 Seal cylinder part 24 Step part 24a Downward step surface 25 Stopper cylinder part 26 Distribution cylinder part 26a Distribution port 27 Nozzle mounting cylinder part 28 Double thread part 28a Upper thread 28b Lower thread 29 Stopper pair 29a Stopper piece 29b Curved surface 30 Nozzle head 31 Cover part 32 Top wall 33 Projection pair 33a engaging protrusion 33b engaging protrusion 34 convex piece cylinder part 35 convex piece 36 nozzle 37 partition wall 38 inflow / outflow hole 39 opening / closing lid part 40 seal cylinder part 41 connecting cylinder part 50 partition member 51 hole forming part 52 mixing chamber 53 air introduction Hole 54 Liquid introduction hole 55 Tube 56 Umbrella 57 Foam member 58 Discharge flow path 59 Discharge hole 60 Return flow path First check valve 61a holding portion 61b sealing film unit S accommodating space R moving range

Claims (5)

A container body having a flexible barrel, the inside of which is a storage space for the content liquid;
A mounting cap provided with a distribution port for the content liquid, and mounted to the mouth of the container body;
A nozzle connected to the flow port and an open / close lid, and is attached to the mounting cap by screw connection so that the open / close lid closes the flow port; and the open / close lid closes above the flow port. A nozzle head rotatable between an open position for opening the flow port,
A partition member having an air introduction hole and a liquid introduction hole at the bottom, which are fixed to the nozzle head at the upper end and have a mixing chamber connected to the flow port and connect the mixing chamber to the accommodation space;
A return passage formed between the mounting cap and the partition member and connecting the flow port to the accommodation space;
A cylindrical holding portion fixed to the outer peripheral surface of the partition member, and an annular and film-like shape extending radially outward from the outer peripheral surface of the holding portion, and at the outer peripheral edge when the nozzle head is in the open position A foam ejection container, comprising: a check valve provided with a sealing film portion that comes into contact with an inner surface of the mounting cap and separates from the inner surface when the nozzle head is in a closed position.   The foam ejection container according to claim 1, wherein when the nozzle head is in an open position, an outer peripheral edge of the seal film portion contacts a downward step surface of the mounting cap. A stopper cylinder portion provided on the mounting cap coaxially with the flow port, a stopper pair including a pair of stopper pieces provided on the outer peripheral surface of the stopper cylinder portion with a predetermined interval in the circumferential direction, and the nozzle A convex piece provided on the head and disposed in a moving range between the pair of stopper pieces,
The foam ejection container according to claim 1 or 2, wherein outer surfaces of the pair of stopper pieces facing away from the moving range are formed as curved surfaces that are reduced in diameter as they move away from the moving range.   A pair of the stopper pairs are provided on the outer peripheral surface of the stopper cylinder portion so as to be shifted from each other by 180 degrees in the circumferential direction, and the pair of convex pieces corresponding to the pair of stopper pairs are provided in the circumferential direction on the nozzle head. The foam ejection container according to claim 3, wherein the foam ejection container is provided by being shifted by 180 degrees.   A pair of two threaded portions extending in an angular range of 180 degrees in the circumferential direction are provided on the outer peripheral surface of the nozzle mounting cylinder portion of the mounting cap so as to be shifted from each other by 180 degrees in the circumferential direction. The foam ejection container according to claim 4, wherein a pair of protrusions including a pair of engagement protrusions that are screw-coupled to the portion are provided with a 180 ° shift in the circumferential direction.

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