CA3027089C - Foamer dispenser, and container with foamer dispenser - Google Patents
Foamer dispenser, and container with foamer dispenser Download PDFInfo
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- CA3027089C CA3027089C CA3027089A CA3027089A CA3027089C CA 3027089 C CA3027089 C CA 3027089C CA 3027089 A CA3027089 A CA 3027089A CA 3027089 A CA3027089 A CA 3027089A CA 3027089 C CA3027089 C CA 3027089C
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Abstract
Provided is a foamer dispenser (1) including a mesh filter (15a) that is disposed in a mixture flow path (R M) of a jet ring (14) to allow a mixture to pass. A connecting flow path area (S I) between a liquid flow path (R L) and the mixture flow path (R M) and a connecting flow path area (S2) between an ambient air flow path (R air) and the mixture flow path (R M) have the relation 2.8 <= S1 / S2 <= 3.8, and /or, a smallest flow path area (S3) of the mixture flow path (R M) is located on an immediately upstream side of the mesh filter (15a), and the smallest flow path area (S3) and a flow path area (S4) of the mesh filter (15a) have the relation 4 <= S4 / S3 <= 10.3.
Description
Foamer Dispenser, and Container with Foamer Dispenser TECHNICAL FIELD
[0001] The present disclosure relates to a foamer dispenser, and a container with the foamer dispenser.
BACKGROUND
[0001] The present disclosure relates to a foamer dispenser, and a container with the foamer dispenser.
BACKGROUND
[0002] Some known containers are equipped with a foamer dispenser that causes a liquid pumped out of a container body to be ejected in the form of foam through a foaming net (mesh filter) by repeated pushing and releasing of the head.
SUMMARY
[0004] Even such a conventional foamer dispenser can suffer from variation in foam quality depending on ingredients or the like of the liquid to be foamed.
For example, as illustrated in FIG. 5A, even in a single piece of foam F, a small air bubble Bi and a large air bubble Bz are sometimes present. For the foam with such a quality, there is room for improvement in terms of the appearance and texture.
[0005] The present disclosure is to provide a foamer dispenser and a container with the foamer dispenser both of which are capable of ejecting a content medium with a satisfactory foam quality.
[0006] One of aspects of the present disclosure resides in a foamer dispenser, including: a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a connecting flow path area Si between the liquid flow path and the mixture flow path and a connecting flow path area S2 between the ambient air flow path and the mixture flow path have the following relation:
2.8 Si/ Sz 3.8 (Si : S2 = (2.8 to 3.8) : 1) [0007] In a preferred embodiment, the connecting flow path area Si and the connecting flow path area Sz have the following relation:
Si/ Sz = 3.8 (Si : Sz = 3.8 : I) [0008] In another preferred embodiment, a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.3 (1 : 4 S3 : S4 1 : 10.3) (S3 : S4 = 1 : (4 to 10.3)) [0009] Another aspect of the present disclosure resides in a foamer dispenser, including: a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.3 (1 :4 S3 : S4 1 : 10.3) (S3 : S4 = 1 : (4 to 10.3)) [0010] In a preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.1 (1 : 4 S3 : S4 1 : 10.1) (S3 : S4 = 1 : (4 to 10.1)) [0011] In another preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 6.2 (I :4 S3 : S4 1 : 6.2) (S3 : S4 = 1 : (4 to 6.2)) [0012] In a more preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
S4 / S3 = 4 (S3 : S4 = 1 : 4) [0013] In yet another preferred embodiment, the mesh filter is arranged in locations in the mixture flow path, and an interval Li between the smallest flow path area S3 and the flow path area S4 of the mesh filter and an interval L2 between the mesh filters have the following relation:
L2 / Li = 3.9 (Li : L2 = 1 : 3.9) [0014] In yet another preferred embodiment, the foamer dispenser further includes:
a piston guide, inside of which the liquid flow path of the liquid pumped from the small-diameter piston is formed, and which extends throughout the large-diameter piston in a manner such that relative movement is permitted; and a jet ring, which includes a lower-end side concave portion in which an upper end side of the piston guide is received, an upper-end side concave portion in which the mesh filter is received, and a through path provided in a separation wall separating the lower-end side concave portion from the upper-end side concave portion, wherein an upper end side of the jet ring is connected to the head.
[0015] Yet another aspect of the present disclosure resides in a container with a foamer dispenser, including: the foamer dispenser according to any one of the above embodiments; and a container body to which the foamer dispenser is fitted.
(Advantageous Effect) [0016] The present disclosure makes the foam quality of the ejected foam fine and uniform, thereby improving the appearance and texture when a user places the foam on the hand.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In the accompanying drawings:
FIG. 1 is a sectional view of a part of a container with a foamer dispenser according to one of embodiments of the present disclosure;
FIG. 2 is an enlarged view of an upper end portion of a piston guide of FIG.
1;
FIG. 3 is an enlarged view of FIG. 1;
FIG. 4 is a part view of a section of a jet ring in which a mesh ring is mounted;
and FIG. 5A schematically illustrates the foam quality obtained when a content medium in a container body is ejected by using a conventional foamer dispenser, and FIG. 5B schematically illustrates the foam quality obtained when a content medium in a container body is ejected by using the foamer dispenser of FIG. 1.
DETAILED DESCRIPTION
SUMMARY
[0004] Even such a conventional foamer dispenser can suffer from variation in foam quality depending on ingredients or the like of the liquid to be foamed.
For example, as illustrated in FIG. 5A, even in a single piece of foam F, a small air bubble Bi and a large air bubble Bz are sometimes present. For the foam with such a quality, there is room for improvement in terms of the appearance and texture.
[0005] The present disclosure is to provide a foamer dispenser and a container with the foamer dispenser both of which are capable of ejecting a content medium with a satisfactory foam quality.
[0006] One of aspects of the present disclosure resides in a foamer dispenser, including: a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a connecting flow path area Si between the liquid flow path and the mixture flow path and a connecting flow path area S2 between the ambient air flow path and the mixture flow path have the following relation:
2.8 Si/ Sz 3.8 (Si : S2 = (2.8 to 3.8) : 1) [0007] In a preferred embodiment, the connecting flow path area Si and the connecting flow path area Sz have the following relation:
Si/ Sz = 3.8 (Si : Sz = 3.8 : I) [0008] In another preferred embodiment, a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.3 (1 : 4 S3 : S4 1 : 10.3) (S3 : S4 = 1 : (4 to 10.3)) [0009] Another aspect of the present disclosure resides in a foamer dispenser, including: a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.3 (1 :4 S3 : S4 1 : 10.3) (S3 : S4 = 1 : (4 to 10.3)) [0010] In a preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 10.1 (1 : 4 S3 : S4 1 : 10.1) (S3 : S4 = 1 : (4 to 10.1)) [0011] In another preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 S4 / S3 6.2 (I :4 S3 : S4 1 : 6.2) (S3 : S4 = 1 : (4 to 6.2)) [0012] In a more preferred embodiment, the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
S4 / S3 = 4 (S3 : S4 = 1 : 4) [0013] In yet another preferred embodiment, the mesh filter is arranged in locations in the mixture flow path, and an interval Li between the smallest flow path area S3 and the flow path area S4 of the mesh filter and an interval L2 between the mesh filters have the following relation:
L2 / Li = 3.9 (Li : L2 = 1 : 3.9) [0014] In yet another preferred embodiment, the foamer dispenser further includes:
a piston guide, inside of which the liquid flow path of the liquid pumped from the small-diameter piston is formed, and which extends throughout the large-diameter piston in a manner such that relative movement is permitted; and a jet ring, which includes a lower-end side concave portion in which an upper end side of the piston guide is received, an upper-end side concave portion in which the mesh filter is received, and a through path provided in a separation wall separating the lower-end side concave portion from the upper-end side concave portion, wherein an upper end side of the jet ring is connected to the head.
[0015] Yet another aspect of the present disclosure resides in a container with a foamer dispenser, including: the foamer dispenser according to any one of the above embodiments; and a container body to which the foamer dispenser is fitted.
(Advantageous Effect) [0016] The present disclosure makes the foam quality of the ejected foam fine and uniform, thereby improving the appearance and texture when a user places the foam on the hand.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In the accompanying drawings:
FIG. 1 is a sectional view of a part of a container with a foamer dispenser according to one of embodiments of the present disclosure;
FIG. 2 is an enlarged view of an upper end portion of a piston guide of FIG.
1;
FIG. 3 is an enlarged view of FIG. 1;
FIG. 4 is a part view of a section of a jet ring in which a mesh ring is mounted;
and FIG. 5A schematically illustrates the foam quality obtained when a content medium in a container body is ejected by using a conventional foamer dispenser, and FIG. 5B schematically illustrates the foam quality obtained when a content medium in a container body is ejected by using the foamer dispenser of FIG. 1.
DETAILED DESCRIPTION
3 [0018] The following describes a container with a foamer dispenser according to the present disclosure in detail with reference to the drawings.
[0019] FIGs. 1 to 4 illustrate a container with a foamer dispenser and a part thereof according to the present disclosure. In FIG. 1 , reference numeral 20 denotes a synthetic resin container body including a mouth 21. A liquid content medium is filled into an inner space So of the container body 20 through the mouth 21. In the present embodiment, the container body 20 is a container having a larger capacity than a capacity of a conventional container.
[0020] Reference numeral I denotes a foamer dispenser according to one of embodiments of the present disclosure. The foamer dispenser 1 is capable of ejecting a 3cc of the content medium in the form of foam.
[0021] Reference numeral 2 denotes a synthetic resin pump cover. The pump cover 2 includes a fitting portion 2a to be fitted to the mouth 21 of the container body 20 and a neck 2c connected integrally with the fitting portion 2a via a shoulder 2b.
The neck 2c is provided, inside thereof, with a through path. The pump cover 2 may, for example, be provided with a screw portion on an inner circumferential surface of the fitting portion 2a as illustrated in the figure and be detachably fitted to the container body 20 by screwing the screw portion to a screw portion provided on an outer circumferential surface of the mouth 21 of the container body 20.
[0022] Reference numeral 3 denotes a synthetic resin pump cylinder. The pump cylinder 3 includes a large-diameter portion 3a fixed to the pump cover 2 and a small-diameter portion 3b having a smaller diameter than the large-diameter portion 3a. The small-diameter portion 3b is provided in a lower end portion thereof with a suction port, and a tube 4 is connected to the suction port. When the pump cover 2 is fitted to the mouth 21 of the container body 20, the pump cylinder 3 is positioned in the inner space So through the mouth 21 of the container body 20 as illustrated in the figure. In the illustrated example, an upper end of the large-diameter portion 3a of the pump cylinder 3 is formed as an outward annular flange 3c. Between the annular flange 3c and an upper end of the mouth 21 of the container body 20, an 0-ring 5 is disposed.
The 0-ring seals between the container body 20 and the pump cylinder 3.
[0023] Reference numeral 6 denotes a synthetic resin small-diameter piston.
The small-diameter piston 6 is received in the small-diameter portion 3b of the pump cylinder 3 and configured to suck and pump the content medium in the container body 20. In the present embodiment, the small-diameter piston 6 includes an annular seal portion 6a, which is slidable on an inner circumferential surface of the small-diameter portion 3h of the pump cylinder 3, and a tubular portion 6c, which extends from the annular seal portion 6a toward the large-diameter portion 3a of the pump cylinder 3.
The tubular portion 6c is provided on an inner side thereof with a through path Ro which is open in an upper end portion 6b of the small-diameter piston 6. In the present embodiment, the upper end portion 6b of the small-diameter piston 6 is connected to the tubular body 6c via an annular step 6d. Accordingly, a step is also formed in the
[0019] FIGs. 1 to 4 illustrate a container with a foamer dispenser and a part thereof according to the present disclosure. In FIG. 1 , reference numeral 20 denotes a synthetic resin container body including a mouth 21. A liquid content medium is filled into an inner space So of the container body 20 through the mouth 21. In the present embodiment, the container body 20 is a container having a larger capacity than a capacity of a conventional container.
[0020] Reference numeral I denotes a foamer dispenser according to one of embodiments of the present disclosure. The foamer dispenser 1 is capable of ejecting a 3cc of the content medium in the form of foam.
[0021] Reference numeral 2 denotes a synthetic resin pump cover. The pump cover 2 includes a fitting portion 2a to be fitted to the mouth 21 of the container body 20 and a neck 2c connected integrally with the fitting portion 2a via a shoulder 2b.
The neck 2c is provided, inside thereof, with a through path. The pump cover 2 may, for example, be provided with a screw portion on an inner circumferential surface of the fitting portion 2a as illustrated in the figure and be detachably fitted to the container body 20 by screwing the screw portion to a screw portion provided on an outer circumferential surface of the mouth 21 of the container body 20.
[0022] Reference numeral 3 denotes a synthetic resin pump cylinder. The pump cylinder 3 includes a large-diameter portion 3a fixed to the pump cover 2 and a small-diameter portion 3b having a smaller diameter than the large-diameter portion 3a. The small-diameter portion 3b is provided in a lower end portion thereof with a suction port, and a tube 4 is connected to the suction port. When the pump cover 2 is fitted to the mouth 21 of the container body 20, the pump cylinder 3 is positioned in the inner space So through the mouth 21 of the container body 20 as illustrated in the figure. In the illustrated example, an upper end of the large-diameter portion 3a of the pump cylinder 3 is formed as an outward annular flange 3c. Between the annular flange 3c and an upper end of the mouth 21 of the container body 20, an 0-ring 5 is disposed.
The 0-ring seals between the container body 20 and the pump cylinder 3.
[0023] Reference numeral 6 denotes a synthetic resin small-diameter piston.
The small-diameter piston 6 is received in the small-diameter portion 3b of the pump cylinder 3 and configured to suck and pump the content medium in the container body 20. In the present embodiment, the small-diameter piston 6 includes an annular seal portion 6a, which is slidable on an inner circumferential surface of the small-diameter portion 3h of the pump cylinder 3, and a tubular portion 6c, which extends from the annular seal portion 6a toward the large-diameter portion 3a of the pump cylinder 3.
The tubular portion 6c is provided on an inner side thereof with a through path Ro which is open in an upper end portion 6b of the small-diameter piston 6. In the present embodiment, the upper end portion 6b of the small-diameter piston 6 is connected to the tubular body 6c via an annular step 6d. Accordingly, a step is also formed in the
4 through path Ro due to the annular step 6d, and an inner diameter of an upper end opening formed in the upper end portion 6b is smaller than a lower end opening formed on an inner side of the annular seal portion 6a.
[0024] Reference numeral 7 denotes a synthetic resin plunger. The plunger 7 extends upward inside the pump cylinder 3 from the small-diameter portion 3b to the large-diameter portion 3a of the pump cylinder 3 and also extends throughout the small-diameter piston 6.
[0025] In the present embodiment, a plurality of fins 7d is disposed at an interval about an axis 0 in a lower end portion 7a of the plunger 7. Furthermore, a plurality of fins 3d is disposed at an interval about the axis 0 in the small-diameter portion 3b of the pump cylinder 3. The plunger 7 is arranged in the small-diameter portion 3b of the pump cylinder 3 in a manner such that the fins 7d of the plunger 7 are alternated with the fins 3d of the pump cylinder 3.
[0026] On the other hand, an upper end portion 7b of the plunger 7 includes a conical portion 7c having a diameter increased upward. The conical portion 7c of the plunger 7 is formed larger than the inner diameter of the opening formed in the upper end portion 6b of the small-diameter piston 6. As described earlier, the upper end portion 6b of the small-diameter piston 6 is reduced in diameter via the annular step 6d. The conical portion 7c of the plunger 7 may be brought into contact with the upper end portion 6b of the small-diameter piston 6 by forcedly extracting the opening formed in the upper end portion 6b. That is to say, by the conical portion 7c of the plunger 7 contacting the upper end portion 6b of the small-diameter piston 6, the upper end opening formed in the upper end portion 6b may be sealed in an openable manner.
As a result, a pump chamber SL is formed in the small-diameter portion 3b of the pump cylinder 3. The content medium, after pressurized in the small-diameter piston 6, is pumped out from the pump chamber Si. by releasing of the plunger 7.
[0027] Reference numeral 8 denotes an elastic member that may be deformed and restored. The elastic member 8 is disposed between the plunger 7 and the small-diameter piston 6 in a compressed state. Accordingly, by pressing the upper end opening of the small-diameter piston 6 against the outer circumferential surface of the conical portion 7c of the plunger 7, the elastic member 8 firmly seals the through path Ro of the small-diameter piston 6 in an openable manner. That is to say, the plunger 7 serves, only when the small-diameter piston 6 is pushed down against elastic force of the elastic member 8, as a suction valve (check valve) configured to open the through path Ro of the small-diameter piston 6. In the present embodiment, the elastic member 8 is formed by a metallic or a synthetic resin spring.
[0028] Reference numeral 9 denotes a synthetic resin large-diameter piston.
The large-diameter piston 9 has a diameter that is larger than the diameter of the small-diameter piston 6. The large-diameter piston 9 is received in the large-diameter portion 3a of the pump cylinder 3 and configured to suck and pump ambient air.
In the present embodiment, the large-diameter piston 9 includes an annular seal portion 9a, which is slidable on an inner circumferential surface of the large-diameter portion 3a of the pump cylinder 3, and a tubular portion 9b, which extends upward from the annular seal portion 9a via an annular wall 9c. The tubular portion 9b is provided, inside thereof, with a through path.
[0029] The annular wall 9c of the large-diameter piston 9 is provided with a plurality of ambient air introduction holes 9n arranged at an interval about the axis 0.
The ambient air introduction holes 9n allow ambient air, after introduced through an ambient air introduction hole 3n formed in the large-diameter portion 3a of the pump cylinder 3, to be introduced to an air pump chamber Sair formed between the large-diameter piston 9 and the large-diameter portion 3a of the pump cylinder 3.
[0030] Reference numeral 10 denotes a check valve configured to open and close the ambient air introduction holes 9n provided in the large-diameter piston 9.
When the large-diameter piston 9 is pushed in and the air pump chamber Sall- is compressed, the check valve 10 closes the ambient air introduction holes 9n of the large-diameter piston 9 to prevent outflow of ambient air, and when the pushing of the large-diameter piston 9 is released and the air pump chamber Sair is expanded, the check valve 10 opens the ambient air introduction holes 9n of the large-diameter piston 9 by the negative pressure in the air pump chamber Sair to allow ambient air to be introduced through the ambient air introduction hole 3n of the pump cylinder 3. Examples of the check valve 10 include an elastic valve made of a synthetic resin.
[0031] Reference numeral 11 denotes a synthetic resin piston guide. The piston guide 11 is provided inside thereof with a liquid flow path RL of the content medium pumped from the small-diameter piston 6 and extends throughout the large-diameter piston 9 in a manner such that relative movement is permitted. In the present embodiment, the piston guide 11 includes a fixed tube I I a, which is fixed to an outer circumferential surface of the tubular portion 6c of the small-diameter piston 6 and a tubular portion 11c, which extends upward from the fixed tube Ila toward the neck 2c of the pump cover 2. In the present embodiment, the tubular portion 11 c of the piston guide 11 is connected to the fixed tube 11 a via an annular step I Id. The above structure allows positioning of the small-diameter piston 6 by bringing the annular step 6d into abutment against the annular step Ild of the piston guide 11.
[0032] The piston guide II is also provided inside thereof with a partition wall llw located below an upper end 1lb of the piston guide 11. In the partition wall Ilw of the piston guide, a tubular portion 1 1 h is provided. As illustrated in FIG. 2, the through path formed on an inner side of the tubular portion I 1 h is defined by a constant-diameter inner circumferential surface hf1 extending from the lower end with a constant diameter and an increased-diameter inner circumferential surface 11 f2 connected to the constant-diameter inner circumferential surface 11f1 with a diameter increasing toward the upper end.
[0033] Furthermore, in the present embodiment, as illustrated in FIG. 2, the tubular portion Ilc is provided, on an inner circumferential surface thereof, with a plurality of protruding ridges 1 lr extending toward the lower end from the partition wall 11w. In the present embodiment, the protruding ridge Ilr is arranged in 6 locations at an interval about the axis 0. However, the protruding ridge llr may be arranged in at least one location.
[0034] Reference numeral 12 denotes a metallic or a synthetic resin ball member.
The ball member 12 rests on the increased-diameter inner circumferential surface 11f2 of the tubular portion Ilh provided in the piston guide 11 to seal the inner side of the tubular portion 11h in an openable manner.
[0035] Reference numeral 13 denotes a synthetic resin slip-off preventing member configured to prevent the ball member 12 from slipping out. The slip-off preventing member 13 is fixed to the inner circumferential surface of the piston guide 11 that is located near the upper end 11 b to form space in which the ball member 12 is received.
The slip-off preventing member 13, together with the piston guide 11, forms an opening port Ai on an inner side of the upper end 11 b of the piston guide 11.
The opening port Ai serves to open the liquid flow path RL provided in the piston guide 11.
[0036] In the present embodiment, the slip-off preventing member 13 includes a circumferential wall 13a, which is fixed between the inner circumferential surface of the piston guide 11 that is located near the upper end lib and the tubular portion Ilh, a ceiling wall 13b located above the ball member 12, and a plurality of connecting pieces 13c connected to the ceiling wall 13b and the circumferential wall 13a. The connecting pieces 13c are arranged at an interval about the axis 0, so that a plurality of apertures Ao are formed between adjacent connecting pieces 13c. For example, 3 apertures Ao may be formed. In the present embodiment, a tubular portion 13d extends upward from and is integrated with an outer edge of the ceiling wall 13b. The above structure forms the annular opening port Ai extending around the axis 0 on the inner side of the upper end 11 b of the piston guide 11 and between the upper end 11 b and the tubular 13d.
That is to say, in the present embodiment, the opening port Ai of the liquid flow path RL forms an annular flow path area Si defined by the upper end 11 b of the piston guide 11 and the tubular portion 13d of the slip-off preventing member 13.
[0037] In this way, in the liquid flow path RL provided inside the piston guide 11 in the present embodiment, the annular opening port Ai formed in the upper end 11 b of the piston guide 11 is opened and closed by the ball member 12. That is to say, the ball member 12 serves as a discharge valve (check valve) that, only when the plunger 7 is released and the content medium is pumped to the liquid flow path RL of the piston guide 11, opens the annular opening port Ai formed in the upper end llb of the piston guide 11.Especially in the present embodiment, the liquid flow path RL formed between the plunger 7 and the ball member 12 also serves as an accumulator that pressurizes the content medium, after pumped from the small-diameter piston 6, to a predetermined pressure and pump the pressurized content medium.
[0038] As illustrated in FIG. 3, the tubular portion 11 c of the piston guide 11 extends throughout the inner side of the tubular portion 9b of the large-diameter piston 9. Between the tubular portion 11c of the piston guide 11 and the tubular portion 9b of the large-diameter piston 9, a gap is formed to allow relative movement in the direction of the axis 0.
[0039] Besides, the tubular portion 1 1 c of the piston guide 11 is provided with a plurality of annular protrusions lie extending around the axis 0. Each annular protrusion lie is provided, on an upper side thereof, with an annular groove hg extending around the axis 0. A lower end portion 9d of the tubular portion 9b of the large-diameter piston 9 may be brought into contact with the annular groove 11g. With the above structure, when the lower end portion 9d of the tubular portion 9b of the large-diameter piston 9 comes off the annular groove llg of the piston guide 11 and the contact is released, the air pump chamber Sair, which is formed between the large-diameter piston 9 and the large-diameter portion 3a of the pump cylinder 3, is brought into communication with the gap formed between the tubular portion 11c of the piston guide 11 and the tubular portion 9h of the large-diameter piston 9.
That is to say, the tubular portion 9b of the large-diameter piston 9 and the annular groove 1 lg of the piston guide 11 serve as an opening / closing valve, and the gap serves as the first ambient air path Rai, for the ambient air which has been pumped from the large-diameter piston 9.
[0040] In the present embodiment, a plurality of protruding ridges Ilk are provided at an interval about the axis 0 on an outer circumferential surface of the tubular portion 11c of the piston guide 11. In the present embodiment, the protruding ridge ilk is arranged in 12 locations at an interval about the axis 0. The protruding ridges llk guide ambient air without contacting the tubular portion 9b of the large-diameter piston 9. Additionally, the protruding ridge Ilr may be arranged in at least one location.
[0041] In the present embodiment, an annular cutout extending around the axis 0 is further formed in an upper end of each annular protruding portion 1 I e. In the cut-out, a plurality of guide walls 1 1 j are provided at an interval about the axis 0, and a plurality of receiving portions C3, configured to prevent inflow of foreign substances, is also provided between adjacent guide walls 11j. The guide walls 1 I j are arranged to be aligned with the protruding ridge Ilk. That is to say, in the present embodiment, the guide wall 1 1 j is also arranged in 12 locations at an interval about the axis 0.
However, the guide wall I 1 j may also be arranged in at least one location.
[0042] Reference numeral 14 denotes a synthetic resin jet ring. As illustrated in FIG. 4, the jet ring 14 includes a lower-end side concave portion Ci, in which the upper end 11 b side of the piston guide 11 is received, an upper-end side concave portion C2, in which two mesh rings 15 which are described later are received, and a separation wall 14a, which separates the lower-end side concave portion Ci from the upper-end side concave portion C2 and is provided with a through path. In the present embodiment, the separation wall 14a is formed as a circumferential wall that connects a lower-end side circumferential wall 14b, which surrounds the upper end 11 b side of the piston guide 11, and an upper-end side circumferential wall 14c, which surrounds the two mesh rings 15.
[0043] In more detail, the separation wall 14a is formed by the first reduced circumferential wall portion 14ai, which is connected to the lower-end side circumferential wall 14b and has an inner diameter smaller than the smaller inner diameter of the lower-end side circumferential wall 14b, a same-diameter circumferential wall portion 14a2, which has the same inner diameter as the first reduced circumferential wall portion 14ai, the second reduced circumferential wall portion 14a3, which has an inner diameter smaller than that of the same-diameter circumferential wall portion 14a2, a large-diameter circumferential wall portion 14a4, which has a diameter increased from the second reduced circumferential wall portion 14a3 to the upper end, and the third reduced circumferential wall portion 14a5, which, together with the large-diameter circumferential wall portion 14a.4, is connected to the upper-end side circumferential wall 14c and which has an inner diameter smaller than that of the upper-end side circumferential wall 14c.
[0044] Especially in the present embodiment, a plurality of reinforcing plates 14a6 is provided at an interval about the axis 0 between the first reduced circumferential wall portion 14ai and the third reduced circumferential wall portion 14a5 The reinforcing plate 14a6 may be arranged in 4 locations at an equal interval about the axis 0. The result is that the separation wall 14a is formed as a waist, and the amount of resin used in the jet ring 14 is reduced. Moreover, the mesh ring 15 may be enlarged, and the amount of foam to be dispensed is increased. However, reinforcing plate 14a6 may be arranged in at least one location.
[0045] Furthermore, an annular bulging portion 14p extending around the axis 0 is provided on an inner circumferential surface 141) of the lower-end side circumferential wall 14b of the jet ring 14. The bulging portion 14p forms, on an inner side of the lower-end side circumferential wall 14b, an inner circumferential surface 14f2 having an inner diameter smaller than that of the inner circumferential surface 14fi.
In the present embodiment, the inner diameter of the bulging portion 14p is defined as the smallest inner diameter of the lower-end side circumferential wall 14b.
Besides, in the lower-end side concave portion CI of the jet ring 14, a plurality of L-shaped grooves 14g is formed to extend from the bulging portion 14p to the first reduced circumferential wall portion 14ai of the separation wall 14a. In the present embodiment, the L-shaped groove 14g is arranged in 12 locations at an interval about the axis 0. However, the L-shaped groove 14g may be arranged in at least one location.
[0046] Reference numeral 15 denotes the mesh ring that is received in the upper-end side concave portion C2 of the jet ring 14. The mesh ring 15 includes a mesh filter 15a. The mesh filter 15a is a member formed with fine apertures through which the content medium may pass and is, for example, a resin net. The mesh filter 15a is fixed to an end of a synthetic resin ring member 15b. The ring member 15b, together with the mesh filter 15a, is fitted and held inside the upper-end side concave portion C2 of the jet ring 14.
[0047] As illustrated in FIG. 3, the jet ring 14 receives the upper end 11 b side of the piston guide 11, with the upper end llb of the piston guide 11 abutting against the first reduced circumferential wall portion 14ai and with the outer circumferential surface of the tubular portion 1 lc of the piston guide 11 fitted to an inner circumferential surface f2 of the bulging portion 14p provided in the lower-end side circumferential wall 14b. This allows the opening port Ai of the piston guide 11 to communicate with the upper-end side concave portion C2 of the jet ring 14 through the through path provided in the separation wall 14a of the jet ring 14.
[0048] Furthermore, since in the present embodiment the L-shaped grooves 14g are formed to extend from the bulging portion 14p of the jet ring 14 to the first reduced circumferential wall portion 14ai of the separation wall 14a, the second ambient air flow paths Rair are formed between the piston guide 11 and the jet ring 14.
The second ambient air flow paths Rai, allow the ambient air that has been pumped from the large-diameter piston 9 to communicate with the through path provided in the separation wall 14a of the jet ring 14. In the present embodiment, 12 second ambient air flow paths Rair, defined by the L-shaped grooves 14g of the jet ring 14 and the piston guide 11, are formed. That is to say, in the present embodiment, an opening port A2 of the second ambient air flow paths Rair has a flow path area S2 defined by the L-shaped grooves 14g formed in the first reduced circumferential wall portion 14ai of the separation wall 14a of the jet ring 14 and the upper end 11 b of the piston guide 11.
Additionally, the second ambient air flow path Rai, may be arranged in at least one location.
[0049] In the present embodiment, the inner circumferential surface 14f1 of the lower-end side circumferential wall 14b of the jet ring 14 is sealed and slidably held by an upper end portion 9e of the tubular portion 9b of the large-diameter piston 9.
This allows the second ambient air flow paths Rair to communicate with the first ambient air flow paths Rai, in an air-tight manner.
[0050] The through path provided in the separation wall 14a forms the first mixture flow path Rm for a mixture of the content medium pumped from the opening port Ai of the liquid flow path RL and the ambient air pumped from the opening port A2 of the second ambient air flow paths Rair. In the present embodiment, in a portion of the first mixture flow path Rm that is located on the inner side of the of the same-diameter circumferential wall 14a2 of the jet ring 14, the tubular portion 13d of the slip-off preventing member 13 may be received. This enlarged path, in which the tubular portion 13d of the slip-off preventing member 13 is received, extends from the smallest inner diameter path formed on the inner side of the second reduced circumferential wall portion 14a3 to the large-diameter circumferential wall portion 14a4 and to the curved path formed on the inner side of the third reduced circumferential wall portion 14a5 and then, communicates with the second mixture flow path Rm formed on the inner side of the ring member 15b of the mesh ring 15.
[0051] Next, reference numeral 16 in FIG. 3 denotes a synthetic resin head.
By a user pushing and releasing the head 16 repeatedly, the head 16 causes pumping movement of the small-diameter piston 6 and the large-diameter piston 9 and ejects the mixture of the content medium and ambient air. In the present embodiment, the head 16 includes a ceiling wall 16a, on which the user performs a pushing operation, and a fixing tube 16b suspended from the ceiling wall 16a. Inside the fixing tube 16b, the upper-end side circumferential wall 14c of the jet ring 14 is fitted and held.
The head 16 further includes a nozzle 16c communicating with the inside of the fixing tube 16b.
As illustrated in FIG. 1, the nozzle 16c is provided in a front end thereof with an ejection orifice la from which the content medium, after passing through the mesh rings 15, is ejected in the form of foam.
[0052] Furthermore, the ceiling wall 16a of the head 16 is provided in a lower end thereof with a plurality of fixing ribs 16r extending radially around the fixing tube 16b. In the lower end of the ceiling wall 16a of the head 16, an outer tube 16d as a separate member is also disposed. In the present embodiment, the outer tube 16d may receive the fixing ribs 16r on the inner side of the outer tube 16d and may be fixed by the fixing ribs 16r.
[0053] In FIG. 1, reference numeral 17 denotes a stopper configured to prevent the head 16 form pushed down. The stopper 17 is an existing stopper that is arranged detachably between the shoulder 2c of the pump cover 2 and the outer tube 16d of the head 16. That is to say, the stopper 17 includes two curved arms 17c extending, in a C-shape in the cross section, from a base 17b having a grip 17a, thereby detachably fitted to the neck 2c of the pump cover 2. Thus, the stopper 17 contacts the upper end of the shoulder 2c and the lower end of the outer tube 16d and prevents the head 16 from pushed down.
[0054] The large container with a foamer dispenser according to the present disclosure allows a large volume of content medium, after pumped from the container body 20, to pass through the mesh filters 15a and ejects the content medium in the form of foam by repeated pushing and releasing of the head 16.
[0055] In the present embodiment, as illustrated in FIG. 3, a connecting flow path area Si between the liquid flow path RL and the mixture flow path Rm and a connecting flow path area S2 between the ambient air flow path Rair and the mixture flow path Rm are defined, and the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air satisfy the following condition.
2.8 Si/ S2 3.8 . . . (1) (2.8: 1 Si : S2 3.8: 1) [0056] More preferably, the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air are set to satisfy the following condition.
Si/ S2 = 3.8 . . . (2) (Si : S2 = 3.8 : 1) [0057] Furthermore, in the present embodiment, in a through path formed inside the jet ring 14, the same-diameter circumferential wall portion 14a2 has the smallest inner diameter. That is to say, the smallest flow path area S3 of the mixture flow path Rm is located on an immediately upstream side of one of the mesh filters 15a.
In this case, the smallest flow path area S3 of the mixture flow path Rm and a flow path area S4 of the mesh filter 15a are preferably set to satisfy the following condition.
4 S4 / S3 :5_ 10.3 . . . (3) (1:4 S3 : S4 1: 10.3) [0058] Preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
4 S4 / S3 10.1 ... (4) (1:4 S3 : S4 1 : 10.1) [0059] More preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
4 S4 / S3 6.2 . (5) (1:4 S3 : S4 1 : 6.2) [0060] Even more preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
S4 / S3 = 4 . .. (6) (S3 : S4 = 1 : 4) [0061] Moreover, in the present embodiment, the mesh filter 15a is arranged in two locations in the mixture flow path Rm. In this case, an interval Li between the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a and an interval L2 between the mesh filters 15a are preferably set to satisfy the following condition.
L2 / Li = 3.9 . . . (7) (Li : L2 = 1 : 3.9) [0062] Moreover, the foamer dispenser of the present embodiment includes the piston guide 11, inside of which the liquid flow path RL of the content medium pumped from the small-diameter piston 6 is formed, and which extends throughout the large-diameter piston 9 in a manner such that relative movement is permitted, and the jet ring 14, which includes the lower-end side concave portion Ct in which the upper end 11b side of the piston guide 11 is received, the upper-end side concave portion C2 in which the mesh filters 15a are received, and the through path provided in the separation wall 14a separating the lower-end side concave portion CI from the upper-end side concave portion C2.
Furthermore, the annular bulging portion 14p is provided on the inner circumferential surface of the lower-end side concave portion CI of the jet ring 14, the upper end 1 lb of the piston guide 11 is abutted against the separation wall 14a of the jet ring 14, the piston guide 11 is fitted to the inner side of the bulging portion 14p, and the inner diameter surface of the lower-end side concave portion CI of the jet ring 14 is sealed slidably by the large-diameter piston 9.
Moreover, the plurality of L-shaped grooves 14g is formed to extend from the bulging portion 14p to the separation wall 14a of the jet ring 14 to form the plurality of ambient air flow paths Ran- between the piston guide 11 and the jet ring 14.
The ambient air flow paths Rai, allow the ambient air that has been pumped from the large-diameter piston 9 to communicate with the lower-end side concave portion CI of the jet ring 14. The ambient air flow paths Rair, together with the liquid flow path RL of the piston guide 11, are connected to the through path of the separation wall 14a.
Moreover, the upper end I 1 b side of the jet ring 14 is connected to the head 16.
[0063] Using an assembly of the piston guide 11 and the jet ring 14 according to the present embodiment facilitates settings of the connecting flow path area Si for the liquid and the connecting flow path area Sz for ambient air. For example, as illustrated in FIG. 2, the connecting flow path area Si for the liquid is defined between the upper end 11 b of the piston guide 11 and the tubular portion 13d of the slip-off preventing member 13. Accordingly, the connecting flow path area Si for the liquid may be suitably changed simply by changing an inner diameter of the upper end 11 b of the piston guide 11 and an outer diameter of (the tubular portion 13d of) the slip-off preventing member 13. Moreover, the connecting flow path area Sz for ambient air is defined by the L-shaped grooves 14g of the jet ring 14 illustrated in FIG. 4, and accordingly, the connecting flow path area Sz may be suitably changed simply by changing the width and depth of the L-shaped grooves 14g.
[0064] Next, another embodiment of the present disclosure is described.
This other embodiment is also directed to the foamer dispenser with the structure illustrated in FIGs. 1 to 4 in which the same-diameter circumferential wall portion 14a2 has the smallest inner diameter in the through path formed inside the jet ring 14.
That is to say, the smallest flow path area S3 of the mixture flow path Rm is located on an immediately upstream side of one of the mesh filters 15a. The smallest flow path area S3 of the mixture flow path Rm and a flow path area S4 of the mesh filter I 5a are preferably set to satisfy the aforementioned condition (3). Thus, in the foamer dispenser with the structure illustrated in FIGs. 1 to 4 according to the other embodiment of the present disclosure, the smallest flow path area S3 of the mixture flow path RNA is located on an immediately upstream side of one of the mesh filters 15a, and the smallest flow path area S3 and the flow path area S4 of the mesh filter 15a are preferably set to satisfy the same condition as the condition (3).
[0065] In this other embodiment also, in addition to the condition (3), the aforementioned conditions (4) to (7) are preferably satisfied. Furthermore, in addition to the condition (3), the aforementioned conditions (1) and (2) may also be satisfied.
[0066] The following describes test results of Examples using a foamer dispenser with the structure illustrated in FIGs. 1 to 4 and Comparative Examples. The tests were conducted by using a body soap (skin cleanser) with ingredients of Table 1 shown below as the content medium of Examples and Comparative Examples.
[0067]
[Table 1]
Ingredients Mass %
Sodium laurylaminopropionate 3 Lauramidopropyl betaine 20 Sodium N-cocoyl methyl taurate 2 Polyoxyethylene (2) disodium alkyl (12-14) sulfosuccinate Sorbitol 3 Glycerin 3 Proplylene glycol 20 Sodium benzoate 0.9 Citrate 0.7 Honey 0.1 Sodium DL-pyrrolidone carboxylate solution 0.1 Dye 0.01 Purified water Reminder [Example 1]
[0068] Si / S2(all) = 3.8 (Si : 52(all) = 3.8 : 1) Connecting flow path area Si for the liquid = 27.3 mm2 Connecting flow path area Sz for ambient air = 7.2 mm2 Note that the connecting flow path area Sz herein refers to a total sum area S, of 12 connecting flow paths for ambient air.
[Example 2]
[0069] Si / S2(all) = 2.8 (Si : S2(all) = 2.8 : 1) Connecting flow path area Si for the liquid = 20.16 mm2 Connecting flow path area Sz for ambient air = 7.2 mm2 Note that the connecting flow path area Sz herein refers to a total sum area Sz of 12 connecting flow paths for ambient air.
[Example 3]
[0070] Si / S3 = 4 (S3 : S4 = 1 : 4) Smallest flow path area S3 of mixture flow path Rm = 24.63 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 4]
[0071] S4 / S3 = 4.2 (S3 : Sa = 1 : 4.2) Smallest flow path area S3 of mixture flow path Rm = 23.76 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 51 [0072] S4 / S3 = 6.2 (S3 : S4 = 1 : 6.2) Smallest flow path area S3 of mixture flow path Rm = 15.89 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 6]
[0073] S4 / S3 = 10 (S3 : S4 = 1 : 10) Smallest flow path area S3 of mixture flow path Rm = 9.85 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 7]
[0074] S4 / S3 = 10.3 (S3 : S4 = 1: 10.3) Smallest flow path area S3 of mixture flow path Rm = 9.57 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [0075] In the following, test results of the aforementioned Examples 1 to 7 according to the present disclosure are shown in Table 2. In Table 2, "good"
indicates that the foam quality is good, and "excellent" indicates that the foam quality is better than good.
[0076]
[Table 2]
Foam quality Example 1 Excellent Example 2 Good Example 3 Excellent Example 4 Good Example 5 Good Example 6 Good Example 7 Good [0077] It can be clearly seen from Examples 1 and 2 in Table 2 shown above that the foam quality of the ejected foam may be improved by setting the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air to satisfy the aforementioned condition (1).Especially, as can be clearly seen from Example 1, the foam quality is better when the aforementioned condition (2) is satisfied.
[0078] It can also be clearly seen from Examples 3 to 7 in Table 2 shown above that the foam quality of the ejected foam may be improved by setting the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter to satisfy the aforementioned conditions (3) to (6).Especially, as can be clearly seen from Example 3, the foam quality is better when the condition (6) is satisfied. In cases of Examples 3 to 7, in which the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter are set to satisfy the conditions (3) to (6), even when a large volume is ejected from the head, the head may be pushed down with feeling of lightness, as opposed to heaviness.
[0079] .. In cases in which Example 1 and Example 3 were combined, the foam quality was also better.
Furthermore, regarding Examples 1 to 7, when the interval Li between the smallest flow path area S3 and the flow path area S4 of the mesh filter was set to be 3.8 mm and when the interval L2 between the mesh filters was set to be 15 mm and when the dimension settings of Li : L2 = 1 : 3.9 were combined with Example 1 or Example 3, the foam quality was even more than better. Moreover, when the above dimension settings were combined with Example 1 and Example 3, the foam quality was best. The foam quality obtained in this case is schematically illustrated in FIG. 5B.
As illustrated in FIG. 5B, according to the present disclosure, the small air bubbles B
are evenly dispersed in the single piece of foam F compared with conventional example illustrated in FIG. 5A.
[0080] .. Additionally, although Examples use the jet ring of a type that may form the liquid flow path RL and the air flow path Rair at the time of assembly, the present disclosure may also be adopted in a foamer dispenser using the jet ring of a conventional type that may form only the liquid flow path RL.
INDUSTRIAL APPLICABILITY
[0081] The present disclosure is applicable to a foamer dispenser that mixes a liquid content medium and ambient air and ejects the mixture in the form of foam and to a container with the foamer dispenser. The content medium may be anything, such as a face cleanser and a hair liquid, that may be mixed with ambient air and ejected in the form of foam.
REFERENCE SIGNS LIST
[0082]
1 Foamer Dispenser 2 pump cover 3 pump cylinder 3a large-diameter portion 3b small-diameter portion 6 small-diameter piston 8 elastic member 9 large-diameter piston 11 piston guide 12 ball member 13 slip-off preventing member 13d tubular portion 14 jet ring 14a separation wall 14ai first reduced circumferential wall portion 14a2 same-diameter circumferential wall portion 14a3 second reduced circumferential wall portion 14a4 large-diameter circumferential wall portion 14a5 third reduced circumferential wall portion 14a6 reinforcing plate 14g L-shaped groove 15 mesh ring 15a mesh filter 20 container body 21 mouth Ai opening port of liquid flow path A2 opening port of ambient air flow path Ci lower-end side concave portion of jet ring C2 upper-end side concave portion of jet ring RL liquid flow path Rair ambient air flow path Rm mixture flow channel Si connecting flow path area between liquid flow path and mixture flow path Sz connecting flow path area between ambient air flow path and mixture flow path S3 smallest flow path area of mixture flow path S4 flow path area of mesh filter
[0024] Reference numeral 7 denotes a synthetic resin plunger. The plunger 7 extends upward inside the pump cylinder 3 from the small-diameter portion 3b to the large-diameter portion 3a of the pump cylinder 3 and also extends throughout the small-diameter piston 6.
[0025] In the present embodiment, a plurality of fins 7d is disposed at an interval about an axis 0 in a lower end portion 7a of the plunger 7. Furthermore, a plurality of fins 3d is disposed at an interval about the axis 0 in the small-diameter portion 3b of the pump cylinder 3. The plunger 7 is arranged in the small-diameter portion 3b of the pump cylinder 3 in a manner such that the fins 7d of the plunger 7 are alternated with the fins 3d of the pump cylinder 3.
[0026] On the other hand, an upper end portion 7b of the plunger 7 includes a conical portion 7c having a diameter increased upward. The conical portion 7c of the plunger 7 is formed larger than the inner diameter of the opening formed in the upper end portion 6b of the small-diameter piston 6. As described earlier, the upper end portion 6b of the small-diameter piston 6 is reduced in diameter via the annular step 6d. The conical portion 7c of the plunger 7 may be brought into contact with the upper end portion 6b of the small-diameter piston 6 by forcedly extracting the opening formed in the upper end portion 6b. That is to say, by the conical portion 7c of the plunger 7 contacting the upper end portion 6b of the small-diameter piston 6, the upper end opening formed in the upper end portion 6b may be sealed in an openable manner.
As a result, a pump chamber SL is formed in the small-diameter portion 3b of the pump cylinder 3. The content medium, after pressurized in the small-diameter piston 6, is pumped out from the pump chamber Si. by releasing of the plunger 7.
[0027] Reference numeral 8 denotes an elastic member that may be deformed and restored. The elastic member 8 is disposed between the plunger 7 and the small-diameter piston 6 in a compressed state. Accordingly, by pressing the upper end opening of the small-diameter piston 6 against the outer circumferential surface of the conical portion 7c of the plunger 7, the elastic member 8 firmly seals the through path Ro of the small-diameter piston 6 in an openable manner. That is to say, the plunger 7 serves, only when the small-diameter piston 6 is pushed down against elastic force of the elastic member 8, as a suction valve (check valve) configured to open the through path Ro of the small-diameter piston 6. In the present embodiment, the elastic member 8 is formed by a metallic or a synthetic resin spring.
[0028] Reference numeral 9 denotes a synthetic resin large-diameter piston.
The large-diameter piston 9 has a diameter that is larger than the diameter of the small-diameter piston 6. The large-diameter piston 9 is received in the large-diameter portion 3a of the pump cylinder 3 and configured to suck and pump ambient air.
In the present embodiment, the large-diameter piston 9 includes an annular seal portion 9a, which is slidable on an inner circumferential surface of the large-diameter portion 3a of the pump cylinder 3, and a tubular portion 9b, which extends upward from the annular seal portion 9a via an annular wall 9c. The tubular portion 9b is provided, inside thereof, with a through path.
[0029] The annular wall 9c of the large-diameter piston 9 is provided with a plurality of ambient air introduction holes 9n arranged at an interval about the axis 0.
The ambient air introduction holes 9n allow ambient air, after introduced through an ambient air introduction hole 3n formed in the large-diameter portion 3a of the pump cylinder 3, to be introduced to an air pump chamber Sair formed between the large-diameter piston 9 and the large-diameter portion 3a of the pump cylinder 3.
[0030] Reference numeral 10 denotes a check valve configured to open and close the ambient air introduction holes 9n provided in the large-diameter piston 9.
When the large-diameter piston 9 is pushed in and the air pump chamber Sall- is compressed, the check valve 10 closes the ambient air introduction holes 9n of the large-diameter piston 9 to prevent outflow of ambient air, and when the pushing of the large-diameter piston 9 is released and the air pump chamber Sair is expanded, the check valve 10 opens the ambient air introduction holes 9n of the large-diameter piston 9 by the negative pressure in the air pump chamber Sair to allow ambient air to be introduced through the ambient air introduction hole 3n of the pump cylinder 3. Examples of the check valve 10 include an elastic valve made of a synthetic resin.
[0031] Reference numeral 11 denotes a synthetic resin piston guide. The piston guide 11 is provided inside thereof with a liquid flow path RL of the content medium pumped from the small-diameter piston 6 and extends throughout the large-diameter piston 9 in a manner such that relative movement is permitted. In the present embodiment, the piston guide 11 includes a fixed tube I I a, which is fixed to an outer circumferential surface of the tubular portion 6c of the small-diameter piston 6 and a tubular portion 11c, which extends upward from the fixed tube Ila toward the neck 2c of the pump cover 2. In the present embodiment, the tubular portion 11 c of the piston guide 11 is connected to the fixed tube 11 a via an annular step I Id. The above structure allows positioning of the small-diameter piston 6 by bringing the annular step 6d into abutment against the annular step Ild of the piston guide 11.
[0032] The piston guide II is also provided inside thereof with a partition wall llw located below an upper end 1lb of the piston guide 11. In the partition wall Ilw of the piston guide, a tubular portion 1 1 h is provided. As illustrated in FIG. 2, the through path formed on an inner side of the tubular portion I 1 h is defined by a constant-diameter inner circumferential surface hf1 extending from the lower end with a constant diameter and an increased-diameter inner circumferential surface 11 f2 connected to the constant-diameter inner circumferential surface 11f1 with a diameter increasing toward the upper end.
[0033] Furthermore, in the present embodiment, as illustrated in FIG. 2, the tubular portion Ilc is provided, on an inner circumferential surface thereof, with a plurality of protruding ridges 1 lr extending toward the lower end from the partition wall 11w. In the present embodiment, the protruding ridge Ilr is arranged in 6 locations at an interval about the axis 0. However, the protruding ridge llr may be arranged in at least one location.
[0034] Reference numeral 12 denotes a metallic or a synthetic resin ball member.
The ball member 12 rests on the increased-diameter inner circumferential surface 11f2 of the tubular portion Ilh provided in the piston guide 11 to seal the inner side of the tubular portion 11h in an openable manner.
[0035] Reference numeral 13 denotes a synthetic resin slip-off preventing member configured to prevent the ball member 12 from slipping out. The slip-off preventing member 13 is fixed to the inner circumferential surface of the piston guide 11 that is located near the upper end 11 b to form space in which the ball member 12 is received.
The slip-off preventing member 13, together with the piston guide 11, forms an opening port Ai on an inner side of the upper end 11 b of the piston guide 11.
The opening port Ai serves to open the liquid flow path RL provided in the piston guide 11.
[0036] In the present embodiment, the slip-off preventing member 13 includes a circumferential wall 13a, which is fixed between the inner circumferential surface of the piston guide 11 that is located near the upper end lib and the tubular portion Ilh, a ceiling wall 13b located above the ball member 12, and a plurality of connecting pieces 13c connected to the ceiling wall 13b and the circumferential wall 13a. The connecting pieces 13c are arranged at an interval about the axis 0, so that a plurality of apertures Ao are formed between adjacent connecting pieces 13c. For example, 3 apertures Ao may be formed. In the present embodiment, a tubular portion 13d extends upward from and is integrated with an outer edge of the ceiling wall 13b. The above structure forms the annular opening port Ai extending around the axis 0 on the inner side of the upper end 11 b of the piston guide 11 and between the upper end 11 b and the tubular 13d.
That is to say, in the present embodiment, the opening port Ai of the liquid flow path RL forms an annular flow path area Si defined by the upper end 11 b of the piston guide 11 and the tubular portion 13d of the slip-off preventing member 13.
[0037] In this way, in the liquid flow path RL provided inside the piston guide 11 in the present embodiment, the annular opening port Ai formed in the upper end 11 b of the piston guide 11 is opened and closed by the ball member 12. That is to say, the ball member 12 serves as a discharge valve (check valve) that, only when the plunger 7 is released and the content medium is pumped to the liquid flow path RL of the piston guide 11, opens the annular opening port Ai formed in the upper end llb of the piston guide 11.Especially in the present embodiment, the liquid flow path RL formed between the plunger 7 and the ball member 12 also serves as an accumulator that pressurizes the content medium, after pumped from the small-diameter piston 6, to a predetermined pressure and pump the pressurized content medium.
[0038] As illustrated in FIG. 3, the tubular portion 11 c of the piston guide 11 extends throughout the inner side of the tubular portion 9b of the large-diameter piston 9. Between the tubular portion 11c of the piston guide 11 and the tubular portion 9b of the large-diameter piston 9, a gap is formed to allow relative movement in the direction of the axis 0.
[0039] Besides, the tubular portion 1 1 c of the piston guide 11 is provided with a plurality of annular protrusions lie extending around the axis 0. Each annular protrusion lie is provided, on an upper side thereof, with an annular groove hg extending around the axis 0. A lower end portion 9d of the tubular portion 9b of the large-diameter piston 9 may be brought into contact with the annular groove 11g. With the above structure, when the lower end portion 9d of the tubular portion 9b of the large-diameter piston 9 comes off the annular groove llg of the piston guide 11 and the contact is released, the air pump chamber Sair, which is formed between the large-diameter piston 9 and the large-diameter portion 3a of the pump cylinder 3, is brought into communication with the gap formed between the tubular portion 11c of the piston guide 11 and the tubular portion 9h of the large-diameter piston 9.
That is to say, the tubular portion 9b of the large-diameter piston 9 and the annular groove 1 lg of the piston guide 11 serve as an opening / closing valve, and the gap serves as the first ambient air path Rai, for the ambient air which has been pumped from the large-diameter piston 9.
[0040] In the present embodiment, a plurality of protruding ridges Ilk are provided at an interval about the axis 0 on an outer circumferential surface of the tubular portion 11c of the piston guide 11. In the present embodiment, the protruding ridge ilk is arranged in 12 locations at an interval about the axis 0. The protruding ridges llk guide ambient air without contacting the tubular portion 9b of the large-diameter piston 9. Additionally, the protruding ridge Ilr may be arranged in at least one location.
[0041] In the present embodiment, an annular cutout extending around the axis 0 is further formed in an upper end of each annular protruding portion 1 I e. In the cut-out, a plurality of guide walls 1 1 j are provided at an interval about the axis 0, and a plurality of receiving portions C3, configured to prevent inflow of foreign substances, is also provided between adjacent guide walls 11j. The guide walls 1 I j are arranged to be aligned with the protruding ridge Ilk. That is to say, in the present embodiment, the guide wall 1 1 j is also arranged in 12 locations at an interval about the axis 0.
However, the guide wall I 1 j may also be arranged in at least one location.
[0042] Reference numeral 14 denotes a synthetic resin jet ring. As illustrated in FIG. 4, the jet ring 14 includes a lower-end side concave portion Ci, in which the upper end 11 b side of the piston guide 11 is received, an upper-end side concave portion C2, in which two mesh rings 15 which are described later are received, and a separation wall 14a, which separates the lower-end side concave portion Ci from the upper-end side concave portion C2 and is provided with a through path. In the present embodiment, the separation wall 14a is formed as a circumferential wall that connects a lower-end side circumferential wall 14b, which surrounds the upper end 11 b side of the piston guide 11, and an upper-end side circumferential wall 14c, which surrounds the two mesh rings 15.
[0043] In more detail, the separation wall 14a is formed by the first reduced circumferential wall portion 14ai, which is connected to the lower-end side circumferential wall 14b and has an inner diameter smaller than the smaller inner diameter of the lower-end side circumferential wall 14b, a same-diameter circumferential wall portion 14a2, which has the same inner diameter as the first reduced circumferential wall portion 14ai, the second reduced circumferential wall portion 14a3, which has an inner diameter smaller than that of the same-diameter circumferential wall portion 14a2, a large-diameter circumferential wall portion 14a4, which has a diameter increased from the second reduced circumferential wall portion 14a3 to the upper end, and the third reduced circumferential wall portion 14a5, which, together with the large-diameter circumferential wall portion 14a.4, is connected to the upper-end side circumferential wall 14c and which has an inner diameter smaller than that of the upper-end side circumferential wall 14c.
[0044] Especially in the present embodiment, a plurality of reinforcing plates 14a6 is provided at an interval about the axis 0 between the first reduced circumferential wall portion 14ai and the third reduced circumferential wall portion 14a5 The reinforcing plate 14a6 may be arranged in 4 locations at an equal interval about the axis 0. The result is that the separation wall 14a is formed as a waist, and the amount of resin used in the jet ring 14 is reduced. Moreover, the mesh ring 15 may be enlarged, and the amount of foam to be dispensed is increased. However, reinforcing plate 14a6 may be arranged in at least one location.
[0045] Furthermore, an annular bulging portion 14p extending around the axis 0 is provided on an inner circumferential surface 141) of the lower-end side circumferential wall 14b of the jet ring 14. The bulging portion 14p forms, on an inner side of the lower-end side circumferential wall 14b, an inner circumferential surface 14f2 having an inner diameter smaller than that of the inner circumferential surface 14fi.
In the present embodiment, the inner diameter of the bulging portion 14p is defined as the smallest inner diameter of the lower-end side circumferential wall 14b.
Besides, in the lower-end side concave portion CI of the jet ring 14, a plurality of L-shaped grooves 14g is formed to extend from the bulging portion 14p to the first reduced circumferential wall portion 14ai of the separation wall 14a. In the present embodiment, the L-shaped groove 14g is arranged in 12 locations at an interval about the axis 0. However, the L-shaped groove 14g may be arranged in at least one location.
[0046] Reference numeral 15 denotes the mesh ring that is received in the upper-end side concave portion C2 of the jet ring 14. The mesh ring 15 includes a mesh filter 15a. The mesh filter 15a is a member formed with fine apertures through which the content medium may pass and is, for example, a resin net. The mesh filter 15a is fixed to an end of a synthetic resin ring member 15b. The ring member 15b, together with the mesh filter 15a, is fitted and held inside the upper-end side concave portion C2 of the jet ring 14.
[0047] As illustrated in FIG. 3, the jet ring 14 receives the upper end 11 b side of the piston guide 11, with the upper end llb of the piston guide 11 abutting against the first reduced circumferential wall portion 14ai and with the outer circumferential surface of the tubular portion 1 lc of the piston guide 11 fitted to an inner circumferential surface f2 of the bulging portion 14p provided in the lower-end side circumferential wall 14b. This allows the opening port Ai of the piston guide 11 to communicate with the upper-end side concave portion C2 of the jet ring 14 through the through path provided in the separation wall 14a of the jet ring 14.
[0048] Furthermore, since in the present embodiment the L-shaped grooves 14g are formed to extend from the bulging portion 14p of the jet ring 14 to the first reduced circumferential wall portion 14ai of the separation wall 14a, the second ambient air flow paths Rair are formed between the piston guide 11 and the jet ring 14.
The second ambient air flow paths Rai, allow the ambient air that has been pumped from the large-diameter piston 9 to communicate with the through path provided in the separation wall 14a of the jet ring 14. In the present embodiment, 12 second ambient air flow paths Rair, defined by the L-shaped grooves 14g of the jet ring 14 and the piston guide 11, are formed. That is to say, in the present embodiment, an opening port A2 of the second ambient air flow paths Rair has a flow path area S2 defined by the L-shaped grooves 14g formed in the first reduced circumferential wall portion 14ai of the separation wall 14a of the jet ring 14 and the upper end 11 b of the piston guide 11.
Additionally, the second ambient air flow path Rai, may be arranged in at least one location.
[0049] In the present embodiment, the inner circumferential surface 14f1 of the lower-end side circumferential wall 14b of the jet ring 14 is sealed and slidably held by an upper end portion 9e of the tubular portion 9b of the large-diameter piston 9.
This allows the second ambient air flow paths Rair to communicate with the first ambient air flow paths Rai, in an air-tight manner.
[0050] The through path provided in the separation wall 14a forms the first mixture flow path Rm for a mixture of the content medium pumped from the opening port Ai of the liquid flow path RL and the ambient air pumped from the opening port A2 of the second ambient air flow paths Rair. In the present embodiment, in a portion of the first mixture flow path Rm that is located on the inner side of the of the same-diameter circumferential wall 14a2 of the jet ring 14, the tubular portion 13d of the slip-off preventing member 13 may be received. This enlarged path, in which the tubular portion 13d of the slip-off preventing member 13 is received, extends from the smallest inner diameter path formed on the inner side of the second reduced circumferential wall portion 14a3 to the large-diameter circumferential wall portion 14a4 and to the curved path formed on the inner side of the third reduced circumferential wall portion 14a5 and then, communicates with the second mixture flow path Rm formed on the inner side of the ring member 15b of the mesh ring 15.
[0051] Next, reference numeral 16 in FIG. 3 denotes a synthetic resin head.
By a user pushing and releasing the head 16 repeatedly, the head 16 causes pumping movement of the small-diameter piston 6 and the large-diameter piston 9 and ejects the mixture of the content medium and ambient air. In the present embodiment, the head 16 includes a ceiling wall 16a, on which the user performs a pushing operation, and a fixing tube 16b suspended from the ceiling wall 16a. Inside the fixing tube 16b, the upper-end side circumferential wall 14c of the jet ring 14 is fitted and held.
The head 16 further includes a nozzle 16c communicating with the inside of the fixing tube 16b.
As illustrated in FIG. 1, the nozzle 16c is provided in a front end thereof with an ejection orifice la from which the content medium, after passing through the mesh rings 15, is ejected in the form of foam.
[0052] Furthermore, the ceiling wall 16a of the head 16 is provided in a lower end thereof with a plurality of fixing ribs 16r extending radially around the fixing tube 16b. In the lower end of the ceiling wall 16a of the head 16, an outer tube 16d as a separate member is also disposed. In the present embodiment, the outer tube 16d may receive the fixing ribs 16r on the inner side of the outer tube 16d and may be fixed by the fixing ribs 16r.
[0053] In FIG. 1, reference numeral 17 denotes a stopper configured to prevent the head 16 form pushed down. The stopper 17 is an existing stopper that is arranged detachably between the shoulder 2c of the pump cover 2 and the outer tube 16d of the head 16. That is to say, the stopper 17 includes two curved arms 17c extending, in a C-shape in the cross section, from a base 17b having a grip 17a, thereby detachably fitted to the neck 2c of the pump cover 2. Thus, the stopper 17 contacts the upper end of the shoulder 2c and the lower end of the outer tube 16d and prevents the head 16 from pushed down.
[0054] The large container with a foamer dispenser according to the present disclosure allows a large volume of content medium, after pumped from the container body 20, to pass through the mesh filters 15a and ejects the content medium in the form of foam by repeated pushing and releasing of the head 16.
[0055] In the present embodiment, as illustrated in FIG. 3, a connecting flow path area Si between the liquid flow path RL and the mixture flow path Rm and a connecting flow path area S2 between the ambient air flow path Rair and the mixture flow path Rm are defined, and the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air satisfy the following condition.
2.8 Si/ S2 3.8 . . . (1) (2.8: 1 Si : S2 3.8: 1) [0056] More preferably, the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air are set to satisfy the following condition.
Si/ S2 = 3.8 . . . (2) (Si : S2 = 3.8 : 1) [0057] Furthermore, in the present embodiment, in a through path formed inside the jet ring 14, the same-diameter circumferential wall portion 14a2 has the smallest inner diameter. That is to say, the smallest flow path area S3 of the mixture flow path Rm is located on an immediately upstream side of one of the mesh filters 15a.
In this case, the smallest flow path area S3 of the mixture flow path Rm and a flow path area S4 of the mesh filter 15a are preferably set to satisfy the following condition.
4 S4 / S3 :5_ 10.3 . . . (3) (1:4 S3 : S4 1: 10.3) [0058] Preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
4 S4 / S3 10.1 ... (4) (1:4 S3 : S4 1 : 10.1) [0059] More preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
4 S4 / S3 6.2 . (5) (1:4 S3 : S4 1 : 6.2) [0060] Even more preferably, the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a are set to satisfy the following condition.
S4 / S3 = 4 . .. (6) (S3 : S4 = 1 : 4) [0061] Moreover, in the present embodiment, the mesh filter 15a is arranged in two locations in the mixture flow path Rm. In this case, an interval Li between the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter 15a and an interval L2 between the mesh filters 15a are preferably set to satisfy the following condition.
L2 / Li = 3.9 . . . (7) (Li : L2 = 1 : 3.9) [0062] Moreover, the foamer dispenser of the present embodiment includes the piston guide 11, inside of which the liquid flow path RL of the content medium pumped from the small-diameter piston 6 is formed, and which extends throughout the large-diameter piston 9 in a manner such that relative movement is permitted, and the jet ring 14, which includes the lower-end side concave portion Ct in which the upper end 11b side of the piston guide 11 is received, the upper-end side concave portion C2 in which the mesh filters 15a are received, and the through path provided in the separation wall 14a separating the lower-end side concave portion CI from the upper-end side concave portion C2.
Furthermore, the annular bulging portion 14p is provided on the inner circumferential surface of the lower-end side concave portion CI of the jet ring 14, the upper end 1 lb of the piston guide 11 is abutted against the separation wall 14a of the jet ring 14, the piston guide 11 is fitted to the inner side of the bulging portion 14p, and the inner diameter surface of the lower-end side concave portion CI of the jet ring 14 is sealed slidably by the large-diameter piston 9.
Moreover, the plurality of L-shaped grooves 14g is formed to extend from the bulging portion 14p to the separation wall 14a of the jet ring 14 to form the plurality of ambient air flow paths Ran- between the piston guide 11 and the jet ring 14.
The ambient air flow paths Rai, allow the ambient air that has been pumped from the large-diameter piston 9 to communicate with the lower-end side concave portion CI of the jet ring 14. The ambient air flow paths Rair, together with the liquid flow path RL of the piston guide 11, are connected to the through path of the separation wall 14a.
Moreover, the upper end I 1 b side of the jet ring 14 is connected to the head 16.
[0063] Using an assembly of the piston guide 11 and the jet ring 14 according to the present embodiment facilitates settings of the connecting flow path area Si for the liquid and the connecting flow path area Sz for ambient air. For example, as illustrated in FIG. 2, the connecting flow path area Si for the liquid is defined between the upper end 11 b of the piston guide 11 and the tubular portion 13d of the slip-off preventing member 13. Accordingly, the connecting flow path area Si for the liquid may be suitably changed simply by changing an inner diameter of the upper end 11 b of the piston guide 11 and an outer diameter of (the tubular portion 13d of) the slip-off preventing member 13. Moreover, the connecting flow path area Sz for ambient air is defined by the L-shaped grooves 14g of the jet ring 14 illustrated in FIG. 4, and accordingly, the connecting flow path area Sz may be suitably changed simply by changing the width and depth of the L-shaped grooves 14g.
[0064] Next, another embodiment of the present disclosure is described.
This other embodiment is also directed to the foamer dispenser with the structure illustrated in FIGs. 1 to 4 in which the same-diameter circumferential wall portion 14a2 has the smallest inner diameter in the through path formed inside the jet ring 14.
That is to say, the smallest flow path area S3 of the mixture flow path Rm is located on an immediately upstream side of one of the mesh filters 15a. The smallest flow path area S3 of the mixture flow path Rm and a flow path area S4 of the mesh filter I 5a are preferably set to satisfy the aforementioned condition (3). Thus, in the foamer dispenser with the structure illustrated in FIGs. 1 to 4 according to the other embodiment of the present disclosure, the smallest flow path area S3 of the mixture flow path RNA is located on an immediately upstream side of one of the mesh filters 15a, and the smallest flow path area S3 and the flow path area S4 of the mesh filter 15a are preferably set to satisfy the same condition as the condition (3).
[0065] In this other embodiment also, in addition to the condition (3), the aforementioned conditions (4) to (7) are preferably satisfied. Furthermore, in addition to the condition (3), the aforementioned conditions (1) and (2) may also be satisfied.
[0066] The following describes test results of Examples using a foamer dispenser with the structure illustrated in FIGs. 1 to 4 and Comparative Examples. The tests were conducted by using a body soap (skin cleanser) with ingredients of Table 1 shown below as the content medium of Examples and Comparative Examples.
[0067]
[Table 1]
Ingredients Mass %
Sodium laurylaminopropionate 3 Lauramidopropyl betaine 20 Sodium N-cocoyl methyl taurate 2 Polyoxyethylene (2) disodium alkyl (12-14) sulfosuccinate Sorbitol 3 Glycerin 3 Proplylene glycol 20 Sodium benzoate 0.9 Citrate 0.7 Honey 0.1 Sodium DL-pyrrolidone carboxylate solution 0.1 Dye 0.01 Purified water Reminder [Example 1]
[0068] Si / S2(all) = 3.8 (Si : 52(all) = 3.8 : 1) Connecting flow path area Si for the liquid = 27.3 mm2 Connecting flow path area Sz for ambient air = 7.2 mm2 Note that the connecting flow path area Sz herein refers to a total sum area S, of 12 connecting flow paths for ambient air.
[Example 2]
[0069] Si / S2(all) = 2.8 (Si : S2(all) = 2.8 : 1) Connecting flow path area Si for the liquid = 20.16 mm2 Connecting flow path area Sz for ambient air = 7.2 mm2 Note that the connecting flow path area Sz herein refers to a total sum area Sz of 12 connecting flow paths for ambient air.
[Example 3]
[0070] Si / S3 = 4 (S3 : S4 = 1 : 4) Smallest flow path area S3 of mixture flow path Rm = 24.63 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 4]
[0071] S4 / S3 = 4.2 (S3 : Sa = 1 : 4.2) Smallest flow path area S3 of mixture flow path Rm = 23.76 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 51 [0072] S4 / S3 = 6.2 (S3 : S4 = 1 : 6.2) Smallest flow path area S3 of mixture flow path Rm = 15.89 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 6]
[0073] S4 / S3 = 10 (S3 : S4 = 1 : 10) Smallest flow path area S3 of mixture flow path Rm = 9.85 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [Example 7]
[0074] S4 / S3 = 10.3 (S3 : S4 = 1: 10.3) Smallest flow path area S3 of mixture flow path Rm = 9.57 mm2 Flow path area S4 of mesh filter = 98.52 mm2 [0075] In the following, test results of the aforementioned Examples 1 to 7 according to the present disclosure are shown in Table 2. In Table 2, "good"
indicates that the foam quality is good, and "excellent" indicates that the foam quality is better than good.
[0076]
[Table 2]
Foam quality Example 1 Excellent Example 2 Good Example 3 Excellent Example 4 Good Example 5 Good Example 6 Good Example 7 Good [0077] It can be clearly seen from Examples 1 and 2 in Table 2 shown above that the foam quality of the ejected foam may be improved by setting the connecting flow path area Si for the liquid and the connecting flow path area S2 for ambient air to satisfy the aforementioned condition (1).Especially, as can be clearly seen from Example 1, the foam quality is better when the aforementioned condition (2) is satisfied.
[0078] It can also be clearly seen from Examples 3 to 7 in Table 2 shown above that the foam quality of the ejected foam may be improved by setting the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter to satisfy the aforementioned conditions (3) to (6).Especially, as can be clearly seen from Example 3, the foam quality is better when the condition (6) is satisfied. In cases of Examples 3 to 7, in which the smallest flow path area S3 of the mixture flow path Rm and the flow path area S4 of the mesh filter are set to satisfy the conditions (3) to (6), even when a large volume is ejected from the head, the head may be pushed down with feeling of lightness, as opposed to heaviness.
[0079] .. In cases in which Example 1 and Example 3 were combined, the foam quality was also better.
Furthermore, regarding Examples 1 to 7, when the interval Li between the smallest flow path area S3 and the flow path area S4 of the mesh filter was set to be 3.8 mm and when the interval L2 between the mesh filters was set to be 15 mm and when the dimension settings of Li : L2 = 1 : 3.9 were combined with Example 1 or Example 3, the foam quality was even more than better. Moreover, when the above dimension settings were combined with Example 1 and Example 3, the foam quality was best. The foam quality obtained in this case is schematically illustrated in FIG. 5B.
As illustrated in FIG. 5B, according to the present disclosure, the small air bubbles B
are evenly dispersed in the single piece of foam F compared with conventional example illustrated in FIG. 5A.
[0080] .. Additionally, although Examples use the jet ring of a type that may form the liquid flow path RL and the air flow path Rair at the time of assembly, the present disclosure may also be adopted in a foamer dispenser using the jet ring of a conventional type that may form only the liquid flow path RL.
INDUSTRIAL APPLICABILITY
[0081] The present disclosure is applicable to a foamer dispenser that mixes a liquid content medium and ambient air and ejects the mixture in the form of foam and to a container with the foamer dispenser. The content medium may be anything, such as a face cleanser and a hair liquid, that may be mixed with ambient air and ejected in the form of foam.
REFERENCE SIGNS LIST
[0082]
1 Foamer Dispenser 2 pump cover 3 pump cylinder 3a large-diameter portion 3b small-diameter portion 6 small-diameter piston 8 elastic member 9 large-diameter piston 11 piston guide 12 ball member 13 slip-off preventing member 13d tubular portion 14 jet ring 14a separation wall 14ai first reduced circumferential wall portion 14a2 same-diameter circumferential wall portion 14a3 second reduced circumferential wall portion 14a4 large-diameter circumferential wall portion 14a5 third reduced circumferential wall portion 14a6 reinforcing plate 14g L-shaped groove 15 mesh ring 15a mesh filter 20 container body 21 mouth Ai opening port of liquid flow path A2 opening port of ambient air flow path Ci lower-end side concave portion of jet ring C2 upper-end side concave portion of jet ring RL liquid flow path Rair ambient air flow path Rm mixture flow channel Si connecting flow path area between liquid flow path and mixture flow path Sz connecting flow path area between ambient air flow path and mixture flow path S3 smallest flow path area of mixture flow path S4 flow path area of mesh filter
Claims (7)
1. A foamer dispenser, comprising:
a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 <= S4 / S3 <=10.3, wherein a check valve is located in the liquid flow path on a downstream side of the small-diameter piston, and a slip-off preventing member that restricts movement of a valving element of the check valve provides an opening configured to communicate the liquid flow path and the mixture flow path with each other.
a pump cover that is fitted to a container body; a pump cylinder that includes a large-diameter portion fixed to the pump cover and a small-diameter portion; a small-diameter piston that is received in the small-diameter portion of the pump cylinder and that is configured to suck and pump a liquid in the container body; a large-diameter piston that is received in the large-diameter portion of the pump cylinder and that is configured to suck and pump ambient air; a head that causes pumping movement of the small-diameter piston and the large-diameter piston and that ejects a mixture of the liquid and the ambient air by a user pushing and releasing the head repeatedly; a liquid flow path of the liquid pumped from the small-diameter piston; an ambient air flow path of the ambient air pumped from the large-diameter piston; a mixture flow path of the mixture of the liquid pumped from the liquid flow path and the ambient air pumped from the ambient air flow path; and a mesh filter that is disposed in the mixture flow path to allow the mixture to pass, wherein a smallest flow path area S3 of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area S3 and a flow path area S4 of the mesh filter have the following relation:
4 <= S4 / S3 <=10.3, wherein a check valve is located in the liquid flow path on a downstream side of the small-diameter piston, and a slip-off preventing member that restricts movement of a valving element of the check valve provides an opening configured to communicate the liquid flow path and the mixture flow path with each other.
2. The foamer dispenser of claim 1, wherein the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 <= S4 / S3 <= 10.1
4 <= S4 / S3 <= 10.1
3. The foamer dispenser of claim 2, wherein the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
4 <= S4 / S3 <= 6.2
4 <= S4 / S3 <= 6.2
4. The foamer dispenser of claims 1 or 2, wherein the smallest flow path area S3 and the flow path area S4 of the mesh filter have the following relation:
S4 / S3 = 4
S4 / S3 = 4
5. The foamer dispenser of any one of claims 1 to 4, wherein the mesh filter is arranged in 2 locations in the mixture flow path, and an interval L1 between the smallest flow path area S3 and the flow path area S4 of the mesh filter and an interval L2 between the mesh filters have the following relation:
L2 / L1 = 3.9
L2 / L1 = 3.9
6. The foamer dispenser of any one of claims 1 to 5, further comprising:
a piston guide, inside of which the liquid flow path of the liquid pumped from the small-diameter piston is formed, and which extends throughout the large-diameter piston in a manner such that relative movement is permitted; and a jet ring, which includes a lower-end side concave portion in which an upper end side of the piston guide is received, an upper-end side concave portion in which the mesh filter is received, and a through path provided in a separation wall separating the lower-end side concave portion from the upper-end side concave portion, wherein an upper end side of the jet ring is connected to the head.
a piston guide, inside of which the liquid flow path of the liquid pumped from the small-diameter piston is formed, and which extends throughout the large-diameter piston in a manner such that relative movement is permitted; and a jet ring, which includes a lower-end side concave portion in which an upper end side of the piston guide is received, an upper-end side concave portion in which the mesh filter is received, and a through path provided in a separation wall separating the lower-end side concave portion from the upper-end side concave portion, wherein an upper end side of the jet ring is connected to the head.
7. A container with a foamer dispenser, comprising:
the foamer dispenser of any one of claims 1 to 6; and a container body to which the foamer dispenser is fitted.
the foamer dispenser of any one of claims 1 to 6; and a container body to which the foamer dispenser is fitted.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013148954A JP6138613B2 (en) | 2013-07-17 | 2013-07-17 | Former dispenser and container with former dispenser |
| JP2013-148954 | 2013-07-17 | ||
| JP2013148956A JP6138614B2 (en) | 2013-07-17 | 2013-07-17 | Former dispenser and container with former dispenser |
| JP2013-148956 | 2013-07-17 | ||
| CA2918292A CA2918292C (en) | 2013-07-17 | 2014-07-17 | Foamer dispenser, and container with foamer dispenser |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2918292A Division CA2918292C (en) | 2013-07-17 | 2014-07-17 | Foamer dispenser, and container with foamer dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3027089A1 CA3027089A1 (en) | 2015-01-22 |
| CA3027089C true CA3027089C (en) | 2021-05-04 |
Family
ID=52485563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3027089A Active CA3027089C (en) | 2013-07-17 | 2014-07-17 | Foamer dispenser, and container with foamer dispenser |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6138613B2 (en) |
| CA (1) | CA3027089C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6973936B2 (en) * | 2018-01-31 | 2021-12-01 | 株式会社吉野工業所 | Foaming widget |
| JP7223643B2 (en) * | 2019-06-13 | 2023-02-16 | 花王株式会社 | foam dispenser |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10397A (en) * | 1996-04-20 | 1998-01-06 | Kao Corp | Froth discharging container |
| JP2005262202A (en) * | 2004-02-20 | 2005-09-29 | Yoshino Kogyosho Co Ltd | Foamer dispenser |
| EP2236214B1 (en) * | 2005-07-29 | 2012-05-09 | Yoshino Kogyosho Co., Ltd. | Discharge container |
| CN102947193B (en) * | 2010-05-31 | 2015-01-07 | 花王株式会社 | Foam discharge container |
-
2013
- 2013-07-17 JP JP2013148954A patent/JP6138613B2/en active Active
-
2014
- 2014-07-17 CA CA3027089A patent/CA3027089C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015020767A (en) | 2015-02-02 |
| CA3027089A1 (en) | 2015-01-22 |
| JP6138613B2 (en) | 2017-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20181211 |