JP5924734B2 - Foam dispenser - Google Patents

Description

  The present invention relates to a foam dispenser, and more particularly, to a foam dispenser in which there is no risk of detachment loss of a valve body constituting a discharge valve in a stem even when a discharge head is detached.

  As a foam discharger, a cylinder member in which a large-diameter air cylinder and a small-diameter liquid cylinder are connected concentrically up and down, and a liquid piston sliding inside the liquid cylinder project from the lower part of the outer periphery of the stem. A pneumatic piston that slides in the pneumatic cylinder is linked to the upper part of the outer periphery of the stem, and an operating member mounted on the upper end of the stem so as to be movable up and down in an upward biased state. A configuration is known in which the liquid in the liquid cylinder and the air in the air cylinder are merged by vertical movement to be bubbled through a foaming member and discharged from the discharge port of the discharge head. (For example, see Patent Document 1)

  In the foam discharge device described in Patent Document 1, a discharge valve provided with a ball-shaped valve body is provided in the upper portion of the stem, and the vertical cylinder of the discharge head is fitted to the outer periphery of the upper end portion of the stem, and the foaming member Is fitted and fixed in a cylindrical member fitted from the inside of the vertical cylinder directly above the stem to the upper end of the stem. The foaming member is configured by fitting a pair of cylinders with a mesh stretched on one end face into the cylinder member.

JP 2009-202122 A

  In this type of conventional bubble ejector, the fitting strength is increased and the ejection head is firmly fitted to the stem so that the ejection head is not easily detached. There was also a risk of losing. In this case, in this type of conventional foam discharger, the discharge head, the cylindrical member, and the foaming member are all removed, and the valve body of the discharge valve provided in the upper part of the stem may be ejected. Since the protruding valve body is generally small in diameter, there is a high risk of loss. In addition, there is a risk that the ejection head is removed due to mischief, and in that case, there is a risk that the valve body may be detached and lost due to an impact of excessive ejection of the ejection head.

  The present invention has been made in view of the above points, and even when the discharge head is detached due to impact or mischief, there is no risk that the valve body of the discharge valve at the upper part in the stem will be detached and lost. We propose a foam dispenser that can be set in the stem in advance (modularized) and has good assembly efficiency.

The first means is configured as follows. That is,
The upper end of the mounting cap A fitted to the outer periphery of the mouth and neck portion 101 of the container body 100 is suspended in the container body 100 and the large-diameter air cylinder 20 and the small-diameter liquid cylinder 21 are moved up and down. A cylinder member B concentrically connected to
The liquid piston C1 sliding the liquid cylinder 21, is projected from the stem C2 periphery lower portion provided with a discharge valve 37 Rutotomoni, the air piston C3 sliding air cylinder 20 the stem C2 periphery upper by linking the discharge head C4 having a discharge port 54 communicating with the stem C2 is fitted, and vertically movable and a loaded actuating member C above biasing condition,
Discharge valve 37, the valve seat 35 for the discharge valve projecting from the upper inner stem C2, is composed by mounting the discharge valve body 36 separate, the vertical movement of the actuating member C in the liquid cylinder 21 A foam dispenser configured to cause the liquid and air in the air cylinder 20 to merge and foam through the foaming member C7 and to be discharged from the discharge port 54;
Rutotomoni partition member C5 that in stem C2 regulates the vertical movement of the discharge valve body 36 is fitted,
Mounting tubular member C6 with foaming member C7 is fitted therein are fitted into the vertical tube 50 of the discharge head C4,
In the partition member C5 and mounting tubular member C6, become by defining a gas-liquid mixing chamber R where the liquid flow path from the air passage p and the discharge valve 37 from the air cylinder 20 are joined,
The partition member C5 has a lower part formed on a cylindrical wall fitted in the stem C2, and has a lid part e covering the upper part of the cylindrical hole of the cylindrical wall at the upper part, and the partition member C5. Is located in the mounting cylinder member C6 with a gap around the lid plate portion e,
The mounting cylinder member C6 is located between the partition wall member C5 and the foaming member C7, and has a flange-shaped bottom plate b having a communication window w opened at the center,
A gas-liquid mixing chamber R formed between the bottom plate b and the lid plate portion e is configured to communicate with the air passage p and the liquid passage through a gap around the lid plate portion e. Become.

The second means is configured as follows. That is, in the first means,
The partition wall member C5 is supported above the fitting cylinder 60 fitted to the inner periphery of the stem C2 and the discharge valve body 36 at the center in the fitting cylinder 60 so that liquid can be circulated around the lid cylinder e. in a partition wall tube portion 61 is closed the upper end,
The mounting cylinder member C6 has a mounting cylinder portion 65 fitted to the inner periphery of the vertical cylinder 50 having a lower end portion fitted to the outer periphery of the upper end portion of the stem C2 , and the above flange from the lower end of the mounting cylinder portion 65. The bottom plate b is extended inward ,
Stem C2 upward vertical cylinder 50 is an air passage p and communicating with an opening at one end thereof to the inner surface of, and the gas-liquid mixing chamber R which is a liquid flow path communicating with the bulkhead tube 61 outer circumference, flange-like bottom plate b and the bulkhead tube It is defined between the unit 61 .

The third means was configured as follows. That is, in the second means,
The mounting cylinder member C6 has a hanging cylinder 68 suspended from the lower surface of the flange-shaped bottom plate b on the inner periphery of the stem C2 , and between the bottom plate ( b ) and the hanging cylinder (68) and the stem (C2). A gap is formed from the air passage (p) opened in the inner surface of the vertical cylinder (50) on the stem (C2) to the liquid channel on the outer periphery of the partition cylinder (61) .

The fourth means is configured as follows. That is, in the second means or the third means ,
The operating member C is
Stem C2 outer peripheral upper end nozzle 53 is opened proximal to the top of the vertical tube 50 which is fitted the lower is extended to, and discharge head is recessed annular recess 55 in the circumferential vertical tube 50 the lower end C4,
An air discharge valve 49 is configured by the lower end portion and the valve seat 39 for the air discharge valve projecting from the outer periphery of the stem C2 , and the upper end portion is slidably fitted to the inner peripheral surface of the annular recess 55 so that the stem C2 is fitted. periphery comprising a cylindrical valve portion 45 which has vertically movable fitted in, provided with a sliding portion 47 which slides to the air cylinder 20 through the partition wall 46 is projected from the outer surface of the cylindrical valve portion 45 An air piston C3;
A foaming member C7 in which a mesh 70 is stretched on the end surface of the cylinder 71 fitted in the mounting cylinder 65,
Between the air cylinder 20 the stem C2 and the tubular valve portion 45, passes between the stem C2 and the vertical tube 50, the air passage p which extends the stem C2 upper end is eclipsed set.

The fifth means is configured as follows. That is, in any one of the second to fourth means,
A plurality of recesses 64 in the circumferential direction are formed at the lower end of the partition cylinder 61 .

The sixth means is configured as follows. That is, in the first means,
The partition member C5 is fitted to the upper end portion in the stem C2, and supports a discharge valve 37 upwardly cover plate portion e, the center upward is formed so that spread tapered and lid A liquid flow path opening around the plate portion e ,
The mounting cylinder member C6 has a lower end fitted to the upper end of the outer periphery of the stem C2, and a communication window w is opened in the center from the mounting cylinder 95 having the upper end fitted to the inner circumference of the vertical cylinder 50, and the cover plate. includes a section e was upwardly is extended bottom plate b,
Stem C2 upper are air passage p and communicating with an opening at one end to the hollow mounting portion 95 inner surface, and a liquid flow path communicating with has been the gas-liquid mixing chamber R which is open at one end to the cover plate portion e outer periphery, a bottom plate b It is defined between the lid plate part e .

As a seventh means, in the sixth means,
One end opening portion of the liquid flow path of the cover plate portion e periphery, formed so that is combined with one end open air passage p.

The eighth means is configured as follows. That is, in the sixth means or the seventh means,
The partition wall member C5 has an outer peripheral edge formed by a fitting cylinder 91 fitted on the inner circumference of the stem C2 and having a tapered surface f1 whose upper surface extends upward, and a column 92 standing on the inner circumference of the fitting cylinder 91. A lid plate portion e that is supported and formed on a tapered surface f2 having a lower peripheral edge extending upward.
The liquid flow path is being defined between the two tapered surfaces.

The ninth means is configured as follows. That is, in the sixth to eighth means,
The operating member C is
An ejection head C4 which upper part is opened the proximal end of the vertical tube 50 which is fitted to the hollow mounting portion 95 outer peripheral nozzle 53 is extended,
A hollow mounting member C6 which is recessed an annular recess 98 in the lower end inner periphery of the hollow mounting portion 95 which is fitted the lower stem C2 periphery upper portion,
An air discharge valve 49 is constituted by the lower end portion and the valve seat 39 for the air discharge valve projecting from the outer periphery of the stem C2, and the upper end portion is slidably fitted to the inner peripheral surface of the annular recess 98 to be attached to the outer periphery of the stem C2. An air piston having a cylindrical valve portion 45 fitted so as to be movable up and down, and a sliding portion 47 that slides on the air cylinder 20 via a partition wall 46 protruding from the outer surface of the cylindrical valve portion 45. C3,
A foaming member C7 in which a mesh 70 is stretched on the end surface of the cylinder 71 fitted in the mounting cylinder 95;
An air passage p is formed between the air cylinder 20 and the stem C2 and the cylindrical valve portion 45, between the stem C2 and the mounting cylinder portion 95, and reaching the upper end of the stem C2 .

  According to the present invention, the partition wall member C5 for restricting the vertical movement of the discharge valve body 36 is fitted in the stem C2, and the mounting cylinder member C6 for fitting the foaming member C7 therein is used as the vertical cylinder of the discharge head C4. 50, since the ejection head C4 may be detached due to an impact or the like, or the ejection head C4 may be removed due to mischief or the like, the partition wall member C5 is provided at the upper end of the stem C2. The discharge head C4 fitted with the mounting cylinder member C6 and the foaming member C7 is removed, the discharge valve body 36 is not exposed, and the discharge valve body 36 pops out as the discharge head C4 is detached. The possibility of losing the discharge valve body 36 can be prevented. Further, since the discharge valve body 36 can be set in advance in the stem C2 in the presence of the partition member C5, it is possible to mount the discharge head C4 after setting the foaming member C7 and the mounting cylinder member C6. For example, there is an advantage that the foaming member C7 having the mesh 70 having different roughness of the eyes can be appropriately selected and assembled at the time of mounting the ejection head C4. Assembly is possible.

Further, the partition wall member C5 has an upper end blockage which is supported above the fitting cylinder 60 fitted to the inner periphery of the stem C2 and the discharge valve body 36 in the center of the fitting cylinder 60 so as to allow liquid to flow therearound. The mounting cylinder member C6 is provided with a mounting cylinder part 65 fitted on the inner periphery of the vertical cylinder 50 with the lower end fitted on the outer periphery of the upper end of the stem C2. A flange-shaped bottom plate b having an open communication window w is extended to communicate with an air passage p having one end open on the inner surface of the vertical cylinder 50 above the stem C2 and communicate with the liquid flow path on the outer periphery of the partition wall cylinder 61. When the liquid mixing chamber R is defined between the flange-shaped bottom plate b and the partition wall cylinder portion 61, it has a feature that the mutual assembling operation can be easily performed, and each member can be assembled compactly and efficiently. There are advantages you can do. Further, a flow path can be secured between the fitting cylinder 60 and the partition cylinder portion 61, and the pressurized liquid in the liquid cylinder 21 opens the discharge valve 37 and the periphery of the partition cylinder portion 61 from the periphery of the discharge valve body 36. Since the liquid is introduced into the gas-liquid mixing chamber R, smooth liquid flow is possible.

The mounting cylinder member C6 has a hanging cylinder 68 suspended from the lower surface of the flange-shaped bottom plate b on the inner periphery of the stem C2, and the inner surface of the vertical cylinder 50 on the stem C2 between the bottom plate b and the hanging cylinder 68 and the stem C2. In the case where the air passage p is opened with a gap communicating with the liquid flow path on the outer periphery of the partition cylindrical portion 61, the air from the air passage p is blown into the liquid flow path on the outer periphery of the partition wall member C5 before Since it is introduced into the liquid mixing chamber R, the gas-liquid mixing can be made more uniform.

The operation member C is a discharge in which a nozzle 53 is extended by opening a base end at the upper part of a vertical cylinder 50 having a lower part fitted to the upper end of the outer periphery of the stem C2, and an annular recess 55 is provided at the inner periphery of the lower end of the vertical cylinder 50. The head C4, the lower end portion and the valve seat 39 for the air discharge valve projecting from the outer periphery of the stem C2 constitute an air discharge valve 49, and the upper end portion is slidably fitted to the inner peripheral surface of the annular recess 55 . A cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be movable up and down is provided, and a sliding portion 47 that slides on the air cylinder 20 via a partition wall 46 protruding from the outer surface of the cylindrical valve portion 45 is provided. The air piston C3 and the foaming member C7 in which the mesh 70 is stretched on the end surface of the cylinder 71 fitted in the mounting cylinder 65, and the stem C2 and the cylindrical valve part 45 from the air cylinder 20 are provided. Air passage p passing between the stem C2 and the vertical cylinder 50 and reaching the upper end of the stem C2. If the has the advantage that can be assembled efficiently members compact.

  In the case where a plurality of circumferential recesses 64 are formed at the lower end of the partition tube portion 61, when the discharge valve 37 is opened by the pressurized liquid, the discharge valve body 36 rises and contacts the partition tube portion 61, It is possible to prevent inconveniences such as obstructing the smooth valve function by closing the lower end of the partition wall cylinder portion 61 whose upper end is closed and adhering to the lower end.

Partition member C5 is fitted to the upper portion in the stem C2, to support the lid plate portion e to the discharge valve 37 upward, spreading tapered upward from the center, a liquid flow path to open around cover plate portion e The mounting cylinder member C6 has a lower end portion fitted to the upper end of the outer periphery of the stem C2, and a connecting plate w having an upper end fitted to the inner circumference of the vertical cylinder 50. includes a section e bottom plate b was extended upward, bother stem C2 communicating with the air passage p which opens at one end to the hollow mounting portion 95 the inner surface of the upper, to the liquid flow path communicating with the opening at one end to the cover plate portion e outer periphery When the liquid mixing chamber R is defined between the bottom plate b and the cover plate portion e , the liquid mixing chamber R has a liquid flow path that extends in a taper shape upward from the center. Since it is provided in the outer periphery of the discharge valve body 36, it has the characteristic that the flow of a liquid becomes smoother.

When one end of the air passage p is opened and joined to one end opening portion of the liquid flow path on the outer periphery of the lid plate portion e , the liquid and air can be mixed uniformly and good quality bubbles can be discharged. Have both.

The partition wall member C5 is supported on the outer peripheral edge by a fitting cylinder 91 fitted on the inner circumference of the stem C2 and having a tapered surface f1 whose upper surface extends upward, and a column 92 standing on the inner circumference of the fitting cylinder 91. And a cover plate portion e having a taper surface f2 whose upper peripheral edge extends upward, and when the liquid flow path is defined between both taper surfaces, the structure is simple and the stem C2 is formed. It also has the advantage of easy assembly.

The operating member C has a discharge head C4 having a base end opened at the upper part of the vertical cylinder 50 fitted to the outer periphery of the mounting cylinder part 95 and a nozzle 53 extended, and a lower part fitted to the upper end of the outer periphery of the stem C2. The mounting cylinder member C6 having an annular recess 98 formed in the inner periphery of the lower end of the cylindrical portion 95 and the valve seat 39 for the air discharge valve protruding from the outer periphery of the stem C2 constitute an air discharge valve 49. The partition 46 is provided with a cylindrical valve portion 45 slidably fitted to the inner peripheral surface of the annular recess 98 and slidably fitted to the outer periphery of the stem C 2, and protruding from the outer surface of the cylindrical valve portion 45. An air piston C3 provided with a sliding portion 47 that slides on the air cylinder 20 through the air bubble, and a foaming member C7 in which a mesh 70 is stretched on the end surface of the cylinder 71 fitted in the mounting cylinder portion 95; Between the air cylinder 20 and the stem C2 and the cylindrical valve portion 45, and the stem C2 is mounted. It passes between the parts 95, in case of providing the air passage p which extends the stem C2 upper end has both the advantage of being able to assemble efficiently members compact.

It is a longitudinal cross-sectional view of a foam discharger. (First embodiment) It is a principal part expanded longitudinal cross-sectional view of a foam discharger. (First embodiment) It is a longitudinal cross-sectional view of a foam discharger. (Second embodiment) FIG. 4 is an enlarged vertical sectional view of a main part of a portion surrounded by a two-dot chain line in FIG. 3. (Second embodiment)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a first embodiment of the foam dispenser of the present invention. The foam discharger 1 includes a mounting cap A, a cylinder member B, an operation member C, a poppet valve body D, and an overcap E.

  The mounting cap A is for fixing the foam discharger 1 to the container body 100, and a flange-like top wall 11 is extended from the upper end edge of the peripheral wall 10 to be fitted to the outer periphery of the mouth neck portion 101 of the container body 100. A guide tube 12 is extended at the center of the top wall 11. The guide cylinder 12 is a double cylinder of an outer cylinder 12a and an inner cylinder 12b. The upper ends of the inner and outer cylinders that stand up above the top wall 11 are closed by a top plate 12c, and the lower ends protrude from the top wall 11 below. Yes.

  The cylinder member B has a small-diameter liquid cylinder 21 concentrically extending below a large-diameter air cylinder 20 whose upper end is fixedly attached to the outer periphery of the back surface of the mounting cap A. The liquid cylinder 21 is connected to the inner peripheral edge of the bottom wall portion of the air cylinder 20 with the upper edge of the peripheral wall portion hanging downward, and extends from the lower end edge of the peripheral wall portion to a tapered bottom wall portion that opens at the center. The upper surface of the bottom wall portion is configured as a valve seat 22 for the suction valve. Further, the pipe fitting cylinder 23 is integrally suspended from the central opening edge of the bottom wall portion, and the upper end of the suction pipe 24 is fitted into the pipe fitting cylinder 23, and the lower end thereof is the lower end portion in the container body 100. Is hanging down. Further, a plurality of locking ribs 25 in the circumferential direction are projected from the bottom wall portion outer edge portion of the liquid cylinder 21 to the lower end portion of the peripheral wall portion. An upward stepped portion is provided at an upper and lower intermediate portion of each locking rib 25.

  The actuating member C is assembled so as to be vertically movable with respect to the cylinder member B in an upwardly biased state, and includes a liquid piston C1, a stem C2, an air piston C3, a discharge head C4, and a partition wall member C5. The mounting cylinder member C6 and the foaming member C7 are provided.

  The liquid piston C1 has an upper and lower skirt-shaped sliding portion 31 projecting outward from the outer periphery of the lower end of the fitting cylinder portion 30 fitted to the lower portion of the stem C2, and the sliding portion 31 is connected to the inner periphery of the liquid cylinder 21. Are fitted in a liquid-tight slidable manner. Further, the upper end portion of the fitting cylinder portion 30 forms a valve seat 32 for a check valve in the form of a ridge at an intermediate portion in the vertical direction in the stem C2. A coil spring s is interposed between the lower surface of the fitting cylinder portion 30 of the liquid piston C1 and the upward step portion of each locking rib 25 to constantly urge the operating member C upward.

  The stem C2 has a cylindrical shape with open upper and lower ends, and a liquid piston C1 that slides on the liquid cylinder 21 protrudes from the outer periphery of the lower portion, and an air piston C3 that slides in the air cylinder 20 has an outer periphery. In cooperation with the upper part, the liquid cylinder 21 and the air cylinder 20 are mounted so as to move up and down. A valve seat 35 for a discharge valve is formed in the upper part of the stem C2, and a discharge valve 37 is formed by a separate ball-shaped discharge valve body 36 placed on the valve seat 35. The valve seat 35 for the discharge valve in this example is formed in a cylindrical shape having a tapered surface that rises from the inner peripheral edge of the flange portion 35a projecting from the inner surface of the stem C2 and whose upper surface falls inward. A plurality of vertical ridges 38 project in the circumferential direction between the lower surface of the valve seat 35 for the discharge valve and directly above the valve seat 32 for the check valve. Further, a valve seat 39 for an air discharge valve projecting in a flange shape is projectingly provided in the middle portion of the outer surface in the vertical direction, and a plurality of longitudinal ridges 40 in the circumferential direction are projectingly provided on the outer periphery of the cylinder wall. ing. The discharge valve 37 according to the present invention is a discharge valve that is configured by mounting a separate discharge valve body 36 on a discharge valve valve seat 35 protruding from the upper part of the stem C2. The valve body 36 may have a general ball shape, or may have another shape such as a spindle shape, and may have the above-described configuration.

The air piston C3 has an inner peripheral cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be able to move up and down with a small width, and the air piston C3 has a stepped partition wall 46 extending from the outer periphery of the cylindrical valve portion 45. An upper and lower skirt-like sliding portion 47 is provided on the inner periphery of the cylinder 20 so as to be slidable in a liquid-tight manner. The cylindrical valve portion 45 is fitted to the outer surface of the vertical protrusion 40 on the outer periphery of the stem C2 so as to be movable up and down. In addition, the stepped partition wall 46 of the air cylinder 20 is provided with an outside air introduction valve 48 for introducing outside air. The outside air introduction valve 48 is opened due to the negative pressure in the air cylinder 20 when the lowered operating member C rises, and introduces outside air.

Further, as will be described later, a vertical cylinder 50 of a discharge head C4 in which an annular recess 55 is provided in the lower end of the inner periphery is fitted to the upper end of the outer periphery of the stem C2, and the cylindrical valve portion 45 has an annular recess. 55 is slidably fitted to the inner peripheral surface. The tubular valve portion 45 is mounted so as to be movable up and down between the top surface of the annular recess 55 and the valve seat 39 for the air discharge valve. The lower end portion of the tubular valve portion 45 and the air discharge valve The valve seat 39 constitutes an air discharge valve 49. A ventilation passage is provided between the stem C2 and the tubular valve portion 45 so as to form an air passage p that communicates from the air discharge valve 49 into the annular recess 55 and communicates from the air cylinder 20 into the stem C2. ing. The air discharge valve 49 is closed when the operating member C shown in FIG. 1 is pushed up to the uppermost position, and is opened when the operating member C is pushed down. It is configured so as to close when it is lifted.

  In the discharge head C4, a vertical cylinder 50 having an inner peripheral lower end fitted to the outer peripheral upper end of the stem C2 is suspended from the back surface of the top plate 51, and an outer peripheral wall 52 is suspended from the peripheral portion of the top plate 51. A lower end portion is suspended in the guide tube 12. Further, a base end is opened at the upper end of the vertical cylinder 50, a nozzle 53 projecting forward through the outer peripheral wall 52 is extended, and a discharge port 54 is opened at the tip thereof. Further, the above-described annular recess 55 is provided in the inner surface of the lower end portion of the vertical cylinder 50. The lower end is opened at the upper end of the annular recess 55 on the inner surface of the vertical cylinder 50 immediately above the annular recess 55, and the upper end of the stem C2 A longitudinal groove 56 opened directly above is provided vertically. An air passage p that communicates from the air cylinder 20 to the stem C2 is formed in the longitudinal groove 56, the annular recess 55, and between the stem C2 and the tubular valve portion 45. Further, a reinforcing rib 57 projects from the upper end of the vertical cylinder 50.

  The partition wall member C5 is fitted into the stem C2 to restrict the vertical movement of the discharge valve body 36, and is connected to the air passage p from the air cylinder 20 and the discharge valve 37 with the mounting cylinder member C6. A gas-liquid mixing chamber R in which the liquid flow paths merge is defined.

The partition wall member C5 is supported above the fitting cylinder 60 fitted to the inner periphery of the stem C2 and the discharge valve body 36 in the central portion of the fitting cylinder 60 so as to allow the liquid to flow therearound, and the upper end is a lid plate. A partition cylinder portion 61 is provided that is closed by a portion e . In the illustrated example, when the fitting cylinder 60 is mounted, the upper end of the stem C2 is positioned below the upper end of the stem C2, and an annular protrusion 62 is provided on the outer periphery of the lower end. While fitting to the outer surface of the valve seat 35 for the discharge valve, the annular protrusion 62 is moved over and engaged with a plurality of locking protrusions 41 projecting in the circumferential direction on the inner surface of the stem C2, thereby preventing slipping out. The partition wall cylinder 61 is supported at its lower outer periphery by a plurality of circumferentially projecting support ribs 63 on the inner surface of the fitting cylinder 60, with the lower end at a position spaced from the discharge valve body 36 and the upper end at the stem. It is supported at a position slightly below the upper end of C2. In addition, a plurality of circumferential recesses 64 are provided in the lower end portion of the partition wall cylinder portion 61 to improve the flow of the liquid.

The mounting cylinder member C6 is fitted in the vertical cylinder 50 of the ejection head C4 with the foaming member C7 fitted therein. In the illustrated example, a flange-shaped bottom plate b is provided extending from the lower end of the mounting tube portion 65 fitted to the inner periphery of the vertical tube 50 in the center by opening a communication window 66, and from the lower surface of the flange-shaped bottom plate b. A hanging cylinder 68 is suspended from the inner periphery of the stem C2. Further, a plurality of gap ribs 69 projecting from the lower surface of the peripheral edge of the bottom plate b to the outer surface of the hanging cylinder 68 are provided in the circumferential direction, and the gap ribs 69 are brought into contact with the upper surface and the inner surface of the corresponding stem C2. b and between the hanging cylinder 68 and the stem C2 are provided with an air passage communicating from the air passage p opened on the inner surface of the vertical cylinder 50 above the stem C2 to the liquid channel on the outer periphery of the partition wall cylinder portion 61.

A gas-liquid mixing chamber R that communicates with the air passage p and communicates with the liquid flow path on the outer periphery of the partition tubular portion 61 is defined between the flange-shaped bottom plate b and the partition tubular portion 61.

  The foaming member C7 is provided with a pair of cylinders 71 with a mesh stretched, and is fitted in the mounting cylinder portion 65 of the mounting cylinder member C6 so that the mesh 70 becomes the upper end and the lower end. In the illustrated example, a pair of cylinders are provided. However, it is possible to fit one cylinder with a mesh stretched thereon, or three or more cylinders, which can be selected as appropriate. .

  The poppet valve body D is provided with a plurality of circumferentially extending locking projections 80 positioned between the locking ribs 25 of the liquid cylinder 21 on the outer surface of the lower end portion, and the stem C2 from the liquid cylinder 21 inside. It has a length that extends to the inner and lower parts, and is mounted so that it can move up and down from the position where the valve seat 22 for suction valve and the lower surface abut to the position where each locking projection 80 contacts the lower surface of the coil spring s. doing. The upper part of each locking projection 80 is formed with a lower portion as a large diameter portion and an upper portion as a small diameter portion, and a check valve body 81 that expands into a tapered cylindrical shape is formed at the upper end of the small diameter portion. A check valve 82 is formed by the valve body 81 and the valve seat 32 for the check valve. A suction valve 83 is constituted by the lower end portion of the poppet valve body D and the valve seat 22 for the suction valve.

  The overcap E has a top-bottomed cylindrical shape with a top wall extending from the top end of the peripheral wall in which the bottom end is detachably fitted to the outer periphery of the guide cylinder 12, and covers and attaches the discharge head C4. Yes.

  When the bubble discharger 1 removes the overcap E from the state of FIG. 1 and pushes down the discharge head C4, the air piston C3 rises relative to the stem C2 and the air discharge valve 49 opens and descends. Air in the air cylinder 20 is pressurized by the air piston C3 and introduced into the gas-liquid mixing chamber R through the air passage p. On the other hand, the liquid cylinder 21 is lowered and lowered until the poppet valve body D is brought into contact with the valve seat 22 for the suction valve, and the poppet valve body D is relatively lifted with respect to the stem C2 to check valve. 82 opens, the pressurized liquid in the liquid cylinder 21 is introduced into the gas-liquid mixing chamber R through the discharge valve 37, and the gas-liquid is mixed here. The gas-liquid mixed in the gas-liquid mixing chamber R passes through the foaming member C7 and foams, and is discharged to the outside from the discharge port 54 of the nozzle 53 of the discharge head C4. In the present example, the presence of the partition member C5 having the above-described configuration allows the pressurized liquid in the liquid cylinder 21 to open the discharge valve 37 and pass from the periphery of the discharge valve body 36 through the outer periphery of the partition tube portion 61 to the gas-liquid mixing chamber. Introduced into R.

  When the pressure of the discharge head C4 is released, the actuating member C is lifted by the biasing force of the coil spring s. At this time, the air piston C3 is lowered relative to the stem C2, and the air discharge valve 49 is closed. Due to the negative pressure in the cylinder 20, the outside air introduction valve 48 is opened and outside air is introduced into the air cylinder 20. On the other hand, the poppet valve body D rises due to the frictional force between the check valve 82 and each vertical protrusion 38 due to the rise of the stem C2, and the container body 100 is placed in the liquid cylinder 21 that is negatively opened by the suction valve 83 being opened. The liquid inside is introduced, and the discharge valve 37 is closed at that time. The poppet valve body D rises until its locking projection 80 comes into contact with the lower surface of the coil spring s. Thereafter, the check valve body 81 comes into contact with the valve seat 32 for the check valve with respect to the stem C2. Until it falls relatively.

  3 and 4 show a second embodiment of the foam dispenser of the present invention. The foam discharger 1 includes a mounting cap A, a cylinder member B, an operation member C, a poppet valve body D, and a stopper F.

  The mounting cap A is for fixing the foam discharger 1 to the container body 100, and a flange-like top wall 11 is extended from the upper end edge of the peripheral wall 10 to be fitted to the outer periphery of the mouth neck portion 101 of the container body 100. A guide cylinder 12 is erected at the center of the top wall 11.

  The cylinder member B has a small-diameter liquid cylinder 21 concentrically extending below a large-diameter air cylinder 20 whose upper end is fixedly attached to the outer periphery of the back surface of the mounting cap A. The liquid cylinder 21 is connected to the inner peripheral edge of the bottom wall portion of the air cylinder 20 with the upper edge of the peripheral wall portion hanging downward, and extends from the lower end edge of the peripheral wall portion to a tapered bottom wall portion that opens at the center. The upper surface of the bottom wall portion is configured as a valve seat 22 for the suction valve. Further, the pipe fitting cylinder 23 is integrally suspended from the central opening edge of the bottom wall portion, and the upper end of the suction pipe 24 is fitted into the pipe fitting cylinder 23, and the lower end thereof is the lower end portion in the container body 100. Is hanging down. Further, a plurality of locking ribs 25 in the circumferential direction are projected from the bottom wall portion outer edge portion of the liquid cylinder 21 to the lower end portion of the peripheral wall portion. An upward stepped portion is provided at an upper and lower intermediate portion of each locking rib 25.

  The actuating member C is assembled so as to be vertically movable with respect to the cylinder member B in an upwardly biased state, and includes a liquid piston C1, a stem C2, an air piston C3, a discharge head C4, and a partition wall member C5. The mounting cylinder member C6 and the foaming member C7 are provided.

  The liquid piston C1 has a skirt-shaped sliding portion 31 projecting outward from the outer periphery of the lower end of the fitting cylinder portion 30 fitted to the lower portion of the stem C2, and the sliding portion 31 is formed on the inner periphery of the liquid cylinder 21. It is fitted so that it can slide liquid tight. Further, the upper end portion of the fitting cylinder portion 30 forms a valve seat 32 for a check valve in the form of a ridge at an intermediate portion in the vertical direction in the stem C2. A coil spring s is interposed between the lower surface of the fitting cylinder portion 30 of the liquid piston C1 and the upward step portion of each locking rib 25 to constantly urge the operating member C upward.

  The stem C2 has a cylindrical shape with open upper and lower ends, and a liquid piston C1 that slides on the liquid cylinder 21 protrudes from the outer periphery of the lower portion, and an air piston C3 that slides in the air cylinder 20 has an outer periphery. In cooperation with the upper part, the liquid cylinder 21 and the air cylinder 20 are mounted so as to move up and down. A valve seat 35 for a discharge valve is formed in the upper part of the stem C2, and a discharge valve 37 is formed by a separate ball-shaped discharge valve body 36 placed on the valve seat 35.

  The valve seat 35 for the discharge valve in this example has a flange portion 35a projecting from the inner surface of the stem C2, and a cross-section that forms a taper surface in which the inner peripheral surface is connected inward to the inner peripheral edge of the flange portion 35a. It is formed of a triangular annular portion 35b and a cylindrical portion 35c suspended from the lower surface of the annular portion 35b, and the discharge valve body 36 is placed on the tapered surface. A plurality of vertical ridges 38 project in the circumferential direction between the lower surface of the valve seat 35 for the discharge valve and directly above the valve seat 32 for the check valve. Furthermore, a valve seat 39 for an air discharge valve projecting in a flange shape is projected from an intermediate portion in the vertical direction of the outer surface.

The air piston C3 has an inner peripheral cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be able to move up and down with a small width, and the air piston C3 has a stepped partition wall 46 extending from the outer periphery of the cylindrical valve portion 45. An upper and lower skirt-like sliding portion 47 is provided on the inner periphery of the cylinder 20 so as to be slidable in a liquid-tight manner. In addition, the stepped partition wall 46 of the air cylinder 20 is provided with an outside air introduction valve 48 for introducing outside air. The outside air introduction valve 48 is opened due to the negative pressure in the air cylinder 20 when the lowered operating member C rises, and introduces outside air.

Further, as will be described later, the upper end of the outer periphery of the stem C2 is fitted with a mounting cylinder 95 of a mounting cylinder member C6 having an annular recess 98 formed in the lower end of the inner periphery. The annular recess 98 is fitted to the inner peripheral surface so as to be slidable. The cylindrical valve portion 45 is mounted so as to be movable up and down between the top surface of the annular recess 98 and the valve seat 39 for the air discharge valve, and the lower end portion of the cylindrical valve portion 45 and the air discharge valve The valve seat 39 constitutes an air discharge valve 49. An air passage is provided between the stem C2 and the tubular valve portion 45 so as to form an air passage p that communicates from the air discharge valve 49 into the annular recess 98 and communicates from the air cylinder 20 into the stem C2. ing. This air discharge valve 49 is closed when the operation member C shown in FIG. 3 is pushed up to the uppermost position, and is opened when the operation member C is pushed down. It is configured so as to close when it is lifted.

  The discharge head C4 is mounted by fitting a vertical cylinder 50 suspended from the back surface of the top plate 51 on the outer periphery of the mounting cylinder part 95 of the mounting cylinder member C6 whose lower end is fitted to the upper end of the outer periphery of the stem C2. doing. A short outer hanging wall 58 is suspended from the peripheral edge of the top plate 51, and a separate inner hanging wall 59 is suspended between the outer hanging wall 58 and the vertical cylinder 50. Further, a base end is opened at the upper end of the vertical cylinder 50, a nozzle 53 protruding forward through the inner hanging wall 59 and the outer hanging wall 58 is extended, and a discharge port 54 is opened at the tip thereof. doing.

  The partition wall member C5 is fitted into the stem C2 to restrict the vertical movement of the discharge valve body 36, and is connected to the air passage p from the air cylinder 20 and the discharge valve 37 with the mounting cylinder member C6. A gas-liquid mixing chamber R in which the liquid flow paths merge is defined.

Partition member C5 is fitted to the upper end portion in the stem C2, to support the lid plate portion e to the discharge valve 37 upward, spreading tapered upward from the center, a liquid flow path which is opened around the cover plate portion e It has. In the illustrated example, the partition wall member C5 includes a fitting cylinder 91 fitted on the inner periphery of the stem C2 and having a tapered surface f1 whose upper surface expands upward, and a column 92 erected on the inner periphery of the fitting cylinder 91. And a lid plate portion e having a tapered surface f2 whose upper peripheral edge extends upward, and the liquid flow path is defined between both tapered surfaces. The lid plate portion e has a circular upper concave portion 93 and a lower concave portion 94 provided at the center of the upper surface and the center of the lower surface, respectively. Further, the lid plate portion e is supported at a position where the lower surface is spaced from the discharge valve body 36 and the upper end is slightly above the upper end of the stem C2.

The mounting cylinder member C6 is fitted in the vertical cylinder 50 of the ejection head C4 with the foaming member C7 fitted therein. In the illustrated example, the upper end of the outer periphery of the mounting cylinder 95 is fitted to the inner periphery of the vertical cylinder 50 of the ejection head C4, and the lower end of the mounting cylinder 95 is fitted to the upper end of the outer periphery of the stem C2. The mounting cylinder 95 has a thin outer diameter at the lower part and a thin outer diameter at the upper part. Further, the upper part of the mounting cylindrical part 95 is located above the lid plate e from the inner periphery of the thick outer diameter part at the upper and lower central parts. Further, a flange-shaped bottom plate b having a raised central portion is extended, and a communication window w is opened at the center of the bottom plate b . An annular recess 98 is provided on the inner periphery of the lower end of the mounting cylinder 95, and the lower end is opened at the upper end of the annular recess 98 on the inner surface of the mounting cylinder 95 just above the annular recess 98, and the upper end is opened immediately above the stem C2. A vertical groove 99 is provided vertically. An air passage p that communicates from the air cylinder 20 into the stem C2 is formed in the longitudinal concave groove 99, in the annular recess 98, and between the stem C2 and the tubular valve portion 45. In this example, the upper end opening of the air passage p is provided on the inner surface of the mounting cylinder portion 95 intermittently in the circumferential direction, and is formed radially. Note that at least one opening of the air passage p is sufficient.

A gas-liquid mixing chamber R communicating with the air passage p and the liquid passage is defined between the flange-shaped bottom plate b and the lid plate portion e.

  The foaming member C7 is provided with a pair of cylinders 71 with a mesh stretched, and is fitted in the upper part of the mounting cylinder part 95 having a thin large outer diameter of the mounting cylinder member C6 so that the mesh 70 becomes the upper end and the lower end. I wear it.

  The poppet valve body D is substantially the same as the example of FIG.

  The stopper F is interposed between the inner hanging wall 59 of the ejection head C4 and the top wall 11 of the mounting cap A, and is detachably fitted to the outer periphery of the guide cylinder 12 to prevent the ejection head C4 from being pushed down.

  When the stopper F is removed from the state shown in FIG. 3 and the discharge head C4 is pushed down, the foam discharger 1 basically operates in the same manner as the example shown in FIG. However, in this example, the presence of the partition wall member C4 provided with the above-described upwardly tapered liquid flow path makes the flow of liquid from the discharge valve smoother, and the liquid on the outer periphery of the lid plate portion 90. One end of the air passage p is opened and joined to one end opening portion of the flow path to smoothly join the gas and liquid.

  In the present invention, the partition member C5 for restricting the vertical movement of the discharge valve body 36 is fitted in the stem C2, and the mounting cylinder member for fitting the foaming member C7 inside the vertical cylinder 50 of the discharge head C4. Since C6 is fitted, when the ejection head C4 is detached, the partition wall member C5 stops in the stem C2, and the mounting cylinder member C6 and the ejection head C4 are detached together. Therefore, there is no possibility that the discharge valve body 36 will come off.

1: Foam dispenser A: mounting cap 10 ... peripheral wall, 11 ... top wall, 12 ... guide tube, 12a ... outer tube, 12b ... inner tube, 12c ... top plate B: cylinder member 20 ... cylinder for air, 21 ... for liquid Cylinder, 22 ... valve seat for suction valve,
23 ... Pipe fitting cylinder, 24 ... Pipe for suction, 25 ... Locking rib,
C: Actuating member C1: Piston for liquid 30 ... fitting cylinder part, 31 ... sliding part, 32 ... valve seat for check valve C2: stem 35 ... valve seat for discharge valve, 35a ... flange part, 35b ... Annular part, 35c ... cylindrical part,
36 ... Discharge valve body, 37 ... Discharge valve, 38 ... Vertical projection, 39 ... Valve seat for air discharge valve,
40 ... Vertical projection, 41 ... Locking projection C3: Piston 45 for air ... Cylindrical valve part, 46 ... Stepped partition, 47 ... Sliding part, 48 ... Outside air introduction valve,
49 ... Air discharge valve C4: Discharge head 50 ... Vertical cylinder, 51 ... Top plate, 52 ... Outer peripheral wall, 53 ... Nozzle, 54 ... Discharge port,
55 ... annular recess, 56 ... vertical groove, 57 ... reinforcing rib, 58 ... outer hanging wall,
59 ... Inward hanging wall,
C5: partition member 60 ... fitting tube, 61 ... partition tube portion, 62 ... annular protrusion, 63 ... support rib, 64 ... recess 91 ... fitting tube, 92 ... support, 93 ... upper recess, 94 ... lower recess,
f1 ... taper surface, f2 ... taper surface C6: mounting cylinder member 65 ... mounting cylinder portion, 68 ... drooping cylinder, 69 ... rib for gap,
95 ... Mounting cylinder, 98 ... annular recess, 99 ... vertical groove C7: foaming member 70 ... mesh, 71 ... cylinder D: poppet valve body 80 ... locking projection, 81 ... check valve body, 82 ... Check valve, 83 ... Suction valve E: Overcap F: Stopper s: Coil spring p: Air passage R: Gas-liquid mixing chamber
b ... Bottom plate e ... Lid plate portion w ... Communication window 100: Container body 101 ... Mouth and neck portion

Claims (9)

A large-diameter air cylinder (20) suspended in the container body (100) in a state where the upper end portion is fixed to the mounting cap (A) fitted to the outer periphery of the mouth-neck part (101) of the container body (100). ) And a small-diameter liquid cylinder (21) concentrically connected vertically, and a cylinder member (B),
Sliding the liquid piston that slides liquid cylinder (21) in (C1), a discharge valve (37) is projected from the stem (C2) outer peripheral lower part with a Rutotomoni, the air cylinder (20) The air piston (C3) to be operated is linked to the upper periphery of the stem (C2), and a discharge head (C4) having a discharge port (54) communicating with the inside of the stem (C2) is fitted and in an upward biased state. An operating member (C) mounted so as to be movable up and down;
Discharge valve (37) the stem (C2) in the valve seat for the discharge valve projecting from the upper part (35) is constituted by mounting the separate discharge valve body (36), the actuating member (C) The liquid in the liquid cylinder (21) and the air in the air cylinder (20) are merged by the vertical movement of the air and foamed through the foaming member (C 7) and discharged from the discharge port (54). a foam dispenser that is,
Stem (C2) partition member for regulating the vertical movement of the discharge valve body (36) (C5) is fitted into the Rutotomoni,
Internal foaming member (C7) cylindrical mounting member is fitted (C6) are fitted in a vertical tube (50) in the ejection head (C4), the
The partition member (C5) and the mounting cylinder member (C6) provide a gas-liquid mixing chamber (R) in which the air passage (p) from the air cylinder (20) and the liquid flow path from the discharge valve (37) merge. It is allowed to define,
The partition member (C5) has a lower part formed on a cylindrical wall fitted in the stem (C2), and has a lid part (e) covering the upper part of the cylindrical hole of the cylindrical wall at the upper part. And the upper part of the partition wall member (C5) is located in the mounting cylinder member (C6) with a gap around the lid plate part (e),
The mounting cylinder member (C6) is located between the partition wall member (C5) and the foaming member (C7), and has a flange-shaped bottom plate (b) having a communication window (w) opened at the center. And
The gas-liquid mixing chamber (R) formed between the bottom plate (b) and the lid plate portion (e) is connected to the air passage (p) and the above-mentioned via a gap around the lid plate portion (e). A foam dispenser configured to communicate with a liquid passage . The partition wall member (C5) has a fitting cylinder (60) fitted to the inner periphery of the stem (C2), and a discharge valve body (36) at the center in the fitting cylinder (60), and the liquid flows around it. and is capable to support a partition wall tube portion obtained by closing the upper end in the cover plate (e) (61),
The mounting cylinder member (C6) has a stem (C2) vertical tube which fitted the lower end to the upper end outer periphery (50) within the hollow mounting portion that is fitted to the peripheral (65), and the hollow mounting The above-mentioned flange-shaped bottom plate ( b ) is extended inward from the lower end of the part (65) ,
Stem (C2) vertical tube of the upper (50) is communicated with the air passage which is open at one end to the inner surface (p), and the partition wall tube portion (61) the outer periphery of the liquid flow path communicating with has been the gas-liquid mixing chamber (R) The foam discharger according to claim 1 , characterized in that is defined between the flange-shaped bottom plate ( b ) and the partition cylindrical portion (61). The mounting cylinder member (C6) has a hanging cylinder (68) suspended from the lower surface of the flange-shaped bottom plate ( b ) on the inner periphery of the stem (C2) , and the bottom plate ( b ) and the hanging cylinder (68) A gap is formed between the stem (C2) and an air passage (p) opened on the inner surface of the vertical cylinder (50) on the stem (C2) to the liquid channel on the outer periphery of the partition cylinder (61). It is, foam dispenser according to claim 2. The operating member (C) is
Stem (C2) upper part by opening a proximal nozzle of the vertical tube that fitting the bottom on the outer peripheral upper end portion (50) (53) is extended, and the vertical tube (50) annular recess in the inner periphery of the lower end A discharge head (C4) having a recessed (55);
An air discharge valve (49) is composed of the lower end portion and the valve seat (39) for the air discharge valve protruding from the outer periphery of the stem (C2) , and the upper end portion slides on the inner peripheral surface of the annular recess (55) . A cylindrical valve portion (45) fitted to the outer periphery of the stem (C2) so as to be movable up and down is provided, and a partition wall (46) protruding from the outer surface of the cylindrical valve portion (45) is provided. An air piston (C3) having a sliding portion (47) sliding on the air cylinder (20);
A foaming member (C7) in which a mesh (70) is stretched on the end face of the cylinder (71) fitted in the mounting cylinder (65);
An air passage (p) between the air cylinder (20), between the stem (C2) and the cylindrical valve portion (45), between the stem (C2) and the vertical cylinder (50), and reaching the upper end of the stem (C2). ) is being eclipsed set, the foam dispenser according to claim 2 or claim 3. The foam discharger according to any one of claims 2 to 4, wherein a plurality of circumferential recesses (64) are formed at a lower end of the partition cylindrical portion (61). The partition member (C5) is fitted to the upper end portion in the stem (C2), and a discharge valve (37) cover plate portion upwardly supports a (e), wide tapered upward from the center There comprising a liquid flow path that opens is formed so that and the cover plate part (e) to ambient,
The mounting cylinder member (C6) has a lower end fitted on the upper end of the outer periphery of the stem (C2), and communicates with the center from the mounting cylinder (95) fitted with the upper end on the inner circumference of the vertical cylinder (50). with a window (w) in the input image is opened and the cover plate part (e) the bottom plate is extended upwardly (b),
Stem (C2) above the hollow mounting portion (95) is communicated with the air passage (p) which is open at one end to the inner surface, and the cover plate part (e) a liquid passage which opens at one end to the outer periphery and communicating been the gas-liquid The foam discharger according to claim 1, wherein the mixing chamber (R) is defined between the bottom plate ( b ) and the lid plate portion (e) . One end opening portion of the cover plate portion (e) the outer periphery of the liquid flow path, formed so that is combined with one end open the air passage (p), the foam dispenser according to claim 6. The partition member (C5) includes a fitting cylinder (91) fitted on the inner periphery of the stem (C2) and having a tapered surface (f1) whose upper surface extends upward, and an inner peripheral edge of the fitting cylinder (91) A support plate part (e) formed on a taper surface (f2) whose outer peripheral edge is supported by a support column (92) standing upright and whose lower peripheral edge part extends upward,
The liquid flow path is being defined between the two tapered surfaces, the foam dispenser according to claim 6 or claim 7. The operating member (C) is
Mounting tubular portion (95) vertical cylinder is fitted on the outer periphery at the top (50) is opened proximal the discharge head nozzles (53) have been extended (C4),
A mounting cylinder member (C6) in which an annular recess (98) is recessed in the inner periphery of the lower end of the mounting cylinder part (95) with the lower part fitted to the upper end of the outer periphery of the stem (C2);
Lower end and the stem (C2) a valve seat of the air discharge valve projecting from the outer periphery (39) and out the air discharge valve (49) is configured, slidably the upper end in an annular recess (98) in the peripheral surface A tubular valve part (45) fitted to the outer periphery of the stem (C2) so as to be movable up and down is provided, and for air via a partition wall (46) protruding from the outer surface of the tubular valve part (45) An air piston (C3) having a sliding portion (47) sliding on the cylinder (20);
A foaming member (C7) in which a mesh (70) is stretched on the end face of the cylinder (71) fitted in the mounting cylinder (95);
An air passage (from the air cylinder (20) between the stem (C2) and the cylindrical valve portion (45), between the stem (C2) and the mounting cylinder portion (95), and reaching the upper end of the stem (C2) ( The foam discharger according to any one of claims 6 to 8, wherein p) is formed .