JP2013227063A - Foam dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foam dispenser which includes a discharge valve 37, on which a discharge valve body 36 being a separate body is placed, on a valve seat for a discharge valve 35 protrusively provided at an upper part in a stem C2, and which is constituted so that liquid in a liquid cylinder 21 and air in an air cylinder 20 may be joined to make foam through a foaming member C7 to discharge the foam from a discharge port 54 by vertical movement of a working member C, wherein there is no possibility that the valve body of the discharge valve at the upper part in the stem is separated and lost even if a discharge head is separated by a shock or mischief, and also the discharge valve can be set in the stem in advance (to be formed as module), and which is excellent in assembly efficiency.SOLUTION: A partition wall member C5 regulating the vertical movement of the discharge valve body is fitted and attached in the stem, an attaching barrel member C6, inside which a foaming member C7 is fitted, is fitted and attached in a vertical barrel 50 of the discharge head C4, whose lower end is fitted and attached to the outer periphery of the upper end of the stem, and an air liquid mixing chamber R, where an air path p from an air cylinder 20 and a liquid channel from the discharge valve 37 are joined, is defined by the partition wall member and the attaching barrel member.

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 is fixed to the mounting cap A to be fitted to the outer periphery of the mouth / neck portion 101 of the container body 100 and hangs down 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 cylinder 21 and a liquid piston C1 that slides in the liquid cylinder 21 protrude from the lower part of the outer periphery of the stem C2 provided with the discharge valve 37. A pneumatic piston C3 that slides on the outer periphery of the stem C2 is linked to the upper part of the outer periphery of the stem C2, and a discharge head C4 having a discharge port 54 that communicates with the inside of the stem C2 is fitted, and an operating member that is mounted so as to be vertically movable in an upward biased state The discharge valve 37 is configured by placing a separate discharge valve body 36 on a valve seat 35 for a discharge valve protruding from the upper part in the stem C2, and the liquid is moved by the vertical movement of the operation member C. Liquid in cylinder 21 and empty This is a foam discharger configured to condense the air in the cylinder 20 for foaming through the foaming member C7 and discharge from the discharge port 54, and restricts the vertical movement of the discharge valve body 36 in the stem C2. The partition member C5 to be fitted and the mounting cylinder member C6 into which the foaming member C7 is fitted are fitted into the vertical cylinder 50 of the discharge head C4, and the partition member C5 and the mounting cylinder member C6 A gas-liquid mixing chamber R in which the air passage p from the cylinder 20 and the liquid flow path from the discharge valve 37 merge was defined.

  The second means is configured as follows. That is, in the first means, the partition wall member C5 has a fitting cylinder 60 fitted on the inner periphery of the stem C2, and a discharge valve body 36 in the center portion of the fitting cylinder 60, with liquid around it. The mounting cylinder member C6 includes an upper end closed partition wall cylinder part 61 supported so as to be able to circulate, and the mounting cylinder member C6 is fitted to the inner circumference of the vertical cylinder 50 with the lower end part fitted to the outer periphery of the upper end part of the stem C2. A flange-shaped bottom plate 67 having a communication window 66 opened at the center is extended from the lower end of the mounting cylinder 65 and communicated with the air passage p having one end opened on the inner surface of the vertical cylinder 50 above the stem C2. A gas-liquid mixing chamber R communicating with the outer peripheral liquid flow path was defined between the flange-shaped bottom plate 67 and the partition cylindrical portion 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 67 on the inner periphery of the stem C2, and between the bottom plate 67 and the hanging cylinder 68 and the stem C2. The air passage p opened on the inner surface of the vertical cylinder 50 on the stem C2 was attached with a gap communicating with the liquid flow path on the outer periphery of the partition cylinder 61.

  The fourth means is configured as follows. In other words, in the first to third means, the actuating member C extends the nozzle 53 by opening the base end to the upper part of the vertical cylinder 50 having the lower part fitted to the upper end of the outer periphery of the stem C2. An air discharge valve 49 is constituted by a discharge head C4 having an annular recess 55 formed on the inner periphery of the lower end of the vertical cylinder 50, and a valve seat 39 for the air discharge valve protruding on the outer periphery of the stem C2. Is fitted to the outer peripheral surface of the annular recess 55 so as to be slidably fitted to the outer periphery of the stem C2, and through a partition wall 46 protruding from the outer surface of the cylindrical valve portion 45. And an air piston C3 having a sliding portion 47 that slides on the air cylinder 20, and a foaming member C7 in which a mesh 70 is stretched on an end surface of a cylinder 71 fitted in the mounting cylinder 65. , Between the cylinder 20 for air and the stem C2 and the cylindrical valve part 45, between the stem C2 and the vertical cylinder 50 The street is provided an air passage p which extends the stem C2 upper end.

  The fifth means is configured as follows. In other words, in any one of the second to fourth means, a plurality of circumferential recesses 64 are formed at the lower end of the partition tube 61.

  The sixth means is configured as follows. That is, in the first means, the partition wall member C5 is fitted to the upper end portion in the stem C2, supports the lid plate portion 90 above the discharge valve 37, spreads in a tapered shape upward from the center, and covers the lid. The mounting cylinder member C6 is provided with a liquid channel that opens around the plate portion 90, and the mounting cylinder member C6 has a lower end portion fitted on the outer periphery upper end portion of the stem C2 and an upper end portion fitted on the inner periphery of the vertical cylinder 50, A bottom plate 96 having a communication window 97 at the center and extending above the lid plate portion 90 is provided. The bottom plate 96 is communicated with an air passage p having one end opened on the inner surface of the mounting cylinder portion 95 above the stem C2, and on the outer periphery of the lid plate portion 90. A gas-liquid mixing chamber R communicating with the liquid flow path having one end opened was defined between the bottom plate 96 and the lid plate portion 90.

  As a seventh means, in the sixth means, 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 90.

  The eighth means is configured as follows. That is, in the sixth means or the seventh means, the partition wall member C5 is fitted to the fitting cylinder 91 fitted on the inner periphery of the stem C2 and having a tapered surface f1 whose upper surface extends upward. The outer peripheral edge is supported by a support column 92 erected on the inner peripheral edge of the combined cylinder 91, and a cover plate part 90 having a lower surface peripheral edge extending upwardly and having a tapered surface f2 is provided. Defined.

  The ninth means is configured as follows. That is, in any one of the sixth to eighth means, the actuating member C opens the base end to the upper part of the vertical cylinder 50 fitted to the outer periphery of the mounting cylinder part 95, and the nozzle 53. , A discharge cylinder C4 extending from the upper end of the stem C2, a mounting cylinder member C6 having an annular recess 98 formed on the inner periphery of the lower end of the mounting cylinder 95 having a lower portion fitted to the upper end of the outer periphery of the stem C2, and a lower end portion protruding from the outer periphery of the stem C2. An air discharge valve 49 is constituted by the provided valve seat 39 for the air discharge valve, and an upper end portion is slidably fitted to the outer peripheral surface of the annular recess 98 and is fitted to the outer periphery of the stem C2 so as to be movable up and down. An air piston C3 having a cylindrical valve portion 45 and a sliding portion 47 that slides on the air cylinder 20 through a partition wall 46 protruding from the outer surface of the cylindrical valve portion 45; A foam member C7 having a mesh 70 stretched on the end surface of the fitted cylinder 71, Between da 20 the stem C2 and the tubular valve portion 45, it passes between the hollow mounting portion 95 and the stem C2, provided an air passage p which extends the stem C2 upper end.

  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 67 having an open communication window 66 is extended to communicate with the air passage p having one end opened 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 67 and the partition wall cylinder portion 61, it is possible to easily perform the mutual assembling operation, and each member can be assembled in a compact and efficient manner. 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 67 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 67 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 outer peripheral surface of the annular recess 55 so that the stem A cylindrical valve portion 45 fitted to the outer periphery of C2 so as to be movable up and down is provided, and a sliding portion 47 that slides on the air cylinder 20 through a partition wall 46 protruding from the outer surface of the cylindrical valve portion 45 is provided. It includes an air piston C3 and a foaming member C7 in which a mesh 70 is stretched on the end surface of a cylinder 71 fitted in the mounting cylinder portion 65. The air cylinder 20 is connected to the stem C2 and the cylindrical valve portion 45. An air passage p that passes between the stem C2 and the vertical cylinder 50 and reaches the upper end of the stem C2 is provided. 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.

  The partition wall member C5 is fitted to the upper end of the stem C2, supports the cover plate part 90 above the discharge valve 37, spreads in a taper shape upward from the center, and has a liquid flow path opening around the cover plate part 90. The mounting cylinder member C6 has a lower end portion fitted to the upper end portion of the outer periphery of the stem C2, and a communication plate 97 is opened in the center from the mounting cylinder portion 95 having the upper end portion fitted to the inner periphery of the vertical cylinder 50. A bottom plate 96 extending above the portion 90, communicating with an air passage p having one end opened on the inner surface of the mounting cylinder portion 95 above the stem C2, and communicating with a liquid channel having one end opened on the outer periphery of the lid plate portion 90. When the liquid mixing chamber R is defined between the bottom plate 96 and the lid plate portion 90, the liquid mixing chamber R is provided with a liquid flow path that tapers upward from the center. Since it is provided on the outer periphery of the discharge valve body 36, it also has the feature that the flow of liquid becomes smoother. To have.

  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 90, 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 90 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. A cylindrical valve portion 45 slidably fitted to the outer peripheral surface of the annular recess 98 and slidably fitted to the outer periphery of the stem C 2, and a partition wall 46 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 via the air cylinder 20 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. Equipped, between the cylinder 20 for air and the stem C2 and the cylindrical valve part 45, with the stem C2 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-shaped sliding portion 47 is fitted to the inner circumference of the cylinder 20 for fluid-tight sliding. 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 includes a fitting cylinder 60 fitted to the inner periphery of the stem C2 and a partition wall with a closed upper end supported above the discharge valve body 36 in the center of the fitting cylinder 60 so as to allow liquid to flow therearound. A cylindrical portion 61 is provided. 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 67 having a communication window 66 opened at the center is provided at the center from the lower end of the mounting cylinder portion 65 fitted to the inner periphery of the vertical cylinder 50, and from the lower surface of the flange-shaped bottom plate 67. A hanging cylinder 68 is suspended from the inner periphery of the stem C2. Further, a plurality of gap ribs 69 projecting in the circumferential direction from the lower surface of the peripheral edge of the bottom plate 67 to the outer surface of the hanging cylinder 68 are provided so as to contact the upper surface and the inner surface of the corresponding stem C2. 67 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 passage on the outer periphery of the partition cylinder section 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 67 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-shaped sliding portion 47 is fitted to the inner circumference of the cylinder 20 for fluid-tight sliding. 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 slidably fitted to the inner peripheral surface. 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.

  The partition wall member C5 is fitted to the upper end portion in the stem C2, supports the cover plate portion 90 above the discharge valve 37, expands in a tapered shape from the center, and opens around the cover plate portion 90. 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. The cover plate portion 90 is supported by the outer peripheral edge and the lower surface peripheral edge portion is a taper surface f2 spreading upward, and the liquid flow path is defined between the two taper surfaces. The cover plate portion 90 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. The lid plate 90 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 portion 95 has a thin outer diameter at the lower portion and a thin outer diameter at the upper portion, and is located above the cover plate portion 90 from the inner periphery of the thick outer diameter portion at the upper and lower central portions of the mounting cylinder portion 95. Further, a flange-shaped bottom plate 96 having a raised central portion is extended, and a communication window 97 is opened at the center of the bottom plate 96. 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 flow path is defined between the flange-shaped bottom plate 97 and the cover plate portion 90.

  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 ... recessed portion 90 ... cover plate portion, 91 ... fitting tube, 92 ... column, 93 ... upper recessed portion 94, lower recess,
f1 ... tapered surface, f2 ... tapered surface C6: mounting tube member 65 ... mounting tube portion, 66 ... communication window, 67 ... bottom plate, 68 ... hanging tube, 69 ... rib for gap,
95 ... Mounting cylinder part, 96 ... Bottom plate, 97 ... Communication window, 98 ... Annular recess, 99 ... Vertical groove C7: Foaming member 70 ... Mesh, 71 ... Cylinder D: Poppet valve element 80 ... Locking protrusion, DESCRIPTION OF SYMBOLS 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 100: Container body 101 ... Neck part

Claims (9)

  The upper end portion is fixed to the mounting cap (A) fitted to the outer periphery of the mouth / neck portion (101) of the container body (100) and suspended in the container body (100), and a large-diameter air cylinder (20) and A cylinder member (B) formed by concentrically connecting small-diameter liquid cylinders (21) vertically and a liquid piston (C1) sliding in the liquid cylinder (21) are connected to a discharge valve (37). The air piston (C3) sliding in the air cylinder (20) is linked to the stem (C2) upper periphery, and communicates with the inside of the stem (C2). A discharge head (C4) having a discharge port (54) to be attached and an operating member (C) mounted so as to be movable up and down in an upward biased state, and the discharge valve (37) includes a stem (C2) Discharged separately to the valve seat (35) for the discharge valve protruding from the inner top The body (36) is placed, and the foaming member (C7) is configured by joining the liquid in the liquid cylinder (21) and the air in the air cylinder (20) by the vertical movement of the operating member (C). The foam discharger is configured to be bubbled through the discharge port (54), and the partition member (C5) for restricting the vertical movement of the discharge valve body (36) is fitted in the stem (C2). The mounting cylinder member (C6) that fits the foaming member (C7) inside is fitted into the vertical cylinder (50) of the discharge head (C4), and the partition wall member (C5) and the mounting cylinder member ( C6) defines 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. vessel.   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. The mounting cylinder member (C6) is provided with an upper end closed partition wall cylinder portion (61) supported so that the lower end portion is fitted to the outer periphery of the upper end portion of the stem (C2). A flange-shaped bottom plate (67) having a communication window (66) opened at the center is extended from the lower end of the mounting cylinder (65), and a vertical cylinder (above the stem (C2) ( 50) A gas-liquid mixing chamber (R) communicating with an air passage (p) having one end opened on the inner surface and communicating with a liquid channel on the outer periphery of the partition wall cylinder part (61) has a flange-shaped bottom plate (67) and a partition wall cylinder part. The foam dispenser according to claim 1 defined between (61).   The mounting cylinder member (C6) has a hanging cylinder (68) suspended from the lower surface of the flange-shaped bottom plate (67) on the inner periphery of the stem (C2), and the bottom plate (67), the hanging cylinder (68) and the stem (C2). A gap between the air passage (p) opened in the inner surface of the vertical cylinder (50) on the stem (C2) and a liquid flow path on the outer periphery of the partition cylinder section (61) is provided between the two. Foam dispenser.   The actuating member (C) opens the base end at the upper part of the vertical cylinder (50) with the lower part fitted to the upper end of the outer periphery of the stem (C2), and extends the nozzle (53), and within the lower end of the vertical cylinder (50) An air discharge valve (49) is composed of a discharge head (C4) having an annular recess (55) formed in the periphery, and a valve seat (39) for the air discharge valve protruding from the lower end and the outer periphery of the stem (C2). And a cylindrical valve portion (45) having an upper end portion slidably fitted to the outer circumferential surface of the annular recess (55) and fitted to the outer circumference of the stem (C2) so as to be movable up and down. 45) and an air piston (C3) having a sliding portion (47) that slides on the air cylinder (20) through a partition wall (46) protruding from the outer surface of the air cylinder (46), and a mounting cylinder portion (65). A foaming member (C7) in which a mesh (70) is stretched on the end face of the fitted cylinder (71), and a stem ( An air passage (p) provided between 2) and the cylindrical valve portion (45), between the stem (C2) and the vertical cylinder (50), and reaching the upper end of the stem (C2). Item 4. The foam discharger according to any one of items 3 to 4.   The foam discharger according to any one of claims 2 to 4, wherein a plurality of circumferential recesses (64) are formed at the lower end of the partition tube portion (61).   The partition member (C5) is fitted to the upper end portion in the stem (C2), supports the lid plate portion (90) above the discharge valve (37), spreads upward from the center in a tapered shape, and the lid plate portion ( 90) The mounting cylinder member (C6) is provided with a liquid channel that opens to the periphery, and the lower end is fitted to the outer peripheral upper end of the stem (C2) and the upper end is fitted to the inner circumference of the vertical cylinder (50). A bottom plate (96) having a communication window (97) opened at the center and extending above the cover plate portion (90) from the tube portion (95) is provided on the inner surface of the mounting tube portion (95) above the stem (C2). The gas-liquid mixing chamber (R) communicating with the air passage (p) having one end opened and communicating with the liquid flow path having one end opened on the outer periphery of the lid plate portion (90) is provided with the bottom plate (96) and the lid plate portion (90 The foam dispenser according to claim 1, defined between   The foam discharger according to claim 6, wherein 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 (90).   The partition wall member (C5) is fitted on the inner periphery of the stem (C2), and has a fitting cylinder (91) having a tapered surface (f1) whose upper surface extends upward, and an inner periphery of the fitting cylinder (91). A lid plate portion (90) having a tapered surface (f2) that is supported by an upright support column (92) and has a lower peripheral surface extending upward, and the liquid flow path is provided between both tapered surfaces. 8. A foam dispenser according to claim 6 or claim 7 defined.   The actuating member (C) includes a discharge head (C4) having a base end opened at the top of a vertical cylinder (50) fitted to the outer periphery of the mounting cylinder (95), and a stem ( C2) A mounting cylinder member (C6) in which an annular recess (98) is formed in the inner periphery of the lower end of the mounting cylinder part (95) with the lower end fitted to the upper end of the outer periphery, and a lower end part and an outer periphery of the stem (C2) The valve seat (39) for the air discharge valve constitutes the air discharge valve (49), and the upper end is slidably fitted to the outer peripheral surface of the annular recess (98) to move up and down on the outer periphery of the stem (C2). A sliding part (50) having a cylindrical valve part (45) fitted so as to be able to slide on the air cylinder (20) through a partition wall (46) protruding from the outer surface of the cylindrical valve part (45). The mesh (70) is stretched on the end face of the cylinder (71) fitted into the mounting cylinder (95) and the air piston (C3) having 47). A foam member (C7), passing from the air cylinder (20) between the stem (C2) and the cylindrical valve part (45), between the stem (C2) and the mounting cylinder part (95), (C2) The foam discharger according to any one of claims 6 to 8, wherein an air passage (p) reaching the upper end is provided.