JP5921861B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid ejector, and more particularly, to a liquid ejector that can disperse a contained liquid in a foam shape and in a wide range of a foam application pattern.

  Various liquid ejectors having a pump mechanism that is used by being attached to a container body, pressurizing and depressurizing the inside of the cylinder, and ejecting the liquid in the container body from the ejection holes have been proposed. (For example, see Patent Document 1)

  The liquid ejector described in Patent Document 1 is a trigger-type liquid ejector, and the liquid inside the container is ejected by pressurizing or depressurizing the inside of the cylinder by operating a trigger swingably attached to the main body. It spouts from the exit.

  In addition, a cylinder that is suspended and fixed in the container body and an operating member that protrudes from the inside of the cylinder and that can be moved up and down in an upward biased state are provided. By doing so, there is also known a vertical pump type liquid ejector that ejects the liquid in the container body from the ejection port.

Japanese Patent Laid-Open No. 11-290731

  The trigger-type liquid ejector or the vertical pump-type liquid ejector ejects liquid in the form of a rod, or in the form of a mist or foam, depending on the internal structure. In the case of spraying in a mist form, for example, a mist-like spray is made possible by arranging a spin mechanism in the liquid flow path and ejecting the rotating liquid from the spout. In addition, a mechanism for introducing outside air is provided in the case of jetting in the form of bubbles, and a mechanism for foaming by mixing outside air and liquid is provided. In the case of a vertical pump type liquid ejector, a large-diameter air cylinder and a small-diameter liquid cylinder are provided, and liquid is ejected in the form of bubbles by the up and down movement of the operating member associated therewith, but the overall structure becomes large I hate it. Further, in any of the liquid ejectors, since the jet outlet for jetting bubbles employs a cylindrical jet outlet, there is also a drawback that the coating pattern is narrow when jetted in a foam form.

  The present invention has been made in view of the above points, and it is possible to disperse the containing liquid in the form of a foam and to apply the foam application pattern in a wide range as much as possible, and the structure is simple and the manufacture is easy. A liquid ejector is proposed.

The first means is configured as follows. That is,
In a liquid ejector that includes a pump mechanism that pressurizes and depressurizes the inside of the cylinder 23 and ejects the liquid in the container B from the ejection hole 66, and ejects the liquid from the ejection hole 66 in a mist form via the spin mechanism 70. And
A foaming diffusion mechanism is provided in front of the ejection hole 66, and the foaming diffusion mechanism is provided with a columnar space-shaped ejection outlet 67 extending ahead of the ejection hole 66, and a base end portion of the ejection outlet 67 is connected to the circumferential surface 72. And a tapered peripheral surface 73 that spreads outward at the tip,
The circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-end-side large-diameter portion 72b,
One end of an outside air introduction path 74 that communicates with the outside and introduces outside air to the small diameter portion 72a of the circumferential surface 72 is opened,
The spray liquid from the ejection hole 66 mixed with the outside air from the outside air introduction path 74 is caused to collide with the large-diameter portion 72b of the circumferential surface 72 to foam, and can be ejected from the tip opening of the ejection port 67.
An adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the ejection port 67 that is continuous with the taper circumferential surface 73 .

The second means is configured as follows. That is, in the first means, the adjustment taper circumferential surface 77 extending outward is continuously provided at the tip of the adjustment circumferential surface 75.

The third means was configured as follows. That is, the first means or the second means is a trigger type liquid ejector provided with a pump mechanism that pressurizes and depressurizes the inside of the cylinder 23 by a trigger operation provided so as to be swingable.

The fourth means is configured as follows. That is, in the first means or the second means, the cylinder 23 is suspended and fixed in the container body B, and the upper portion projects from the inside of the cylinder 23 so as to be vertically movable in an upwardly biased state. This is a vertical pump type liquid ejector that includes an operating member 80 and pressurizes and depressurizes the inside of the cylinder 23 by the vertical movement of the operating member 80.

  According to the present invention, it is possible to form a bubble pattern with a simple improvement of a liquid ejector that can disperse the bubble pattern as widely as possible, has a simple structure, and has a mechanism for ejecting in a mist form from the ejection hole 66. There is an advantage that can be.

  When the adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the spout 67 that is continuous with the taper circumferential surface 73, the dispersed bubble pattern can be adjusted to a diffusion state as necessary, The outline of the foam pattern can also be sprayed clearly.

  When the adjustment taper circumferential surface 77 extending outward is continuously provided at the tip of the adjustment circumferential surface 75, the sprayed foam application pattern is entirely compared with the case where only the adjustment circumferential surface 75 is added. The size of the central concentration area p1 tends to be reduced by expanding the dispersion area of the bubbles, and preferable selection and use can be made depending on the form and application in which only the adjustment circumferential surface 75 is added.

  When the circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-end-side large-diameter portion 72b, and one end of the outside air introduction path 74 is opened in the small-diameter portion 72a, the introduction of outside air is the ejection hole 66. It is carried out in the narrow jet port 67 in the vicinity, and intimate mixing becomes possible. Thereafter, the mixed liquid collides with the large diameter portion, and better foaming properties can be obtained.

It is a longitudinal cross-sectional view of a liquid ejector. (First embodiment) It is explanatory drawing of a spin mechanism. (First embodiment) It is a principal part expanded sectional view of a jet hole and a jet nozzle part. (First embodiment) It is a front view of the application pattern of foam. (First embodiment) It is a longitudinal cross-sectional view of a liquid ejector. (Second embodiment) It is an enlarged front view of a nozzle. (Second embodiment) It is a principal part expanded sectional view of a jet hole and a jet nozzle part. (Second embodiment) It is a principal part expanded sectional view of a jet hole and a jet nozzle part. (Third embodiment) It is principal part enlarged view sectional drawing of an adjustment taper surrounding surface part. (Third embodiment) It is a front view of the application pattern of foam. (Third embodiment) It is a principal part expanded sectional view of a jet hole and a jet nozzle part. (Fourth embodiment)

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

  1 to 4 show a first embodiment of the liquid ejector of the present invention. In the following description, for the sake of convenience, the upper part of the drawing will be referred to as the upper part, the lower part as the lower part, and the left side where the spout 67 is located will be referred to as the front part and the opposite will be described as the rear part. The liquid ejector A in this example is a trigger-type liquid ejector A1 having a pump mechanism that pressurizes and depressurizes the inside of a cylinder by a trigger operation provided so as to be swingable. A main body 20, a connecting cylinder member 30, a trigger 40, a connecting member 50, and a nozzle 60 are provided.

  The mounting cap 10 is screwed to the outer periphery of the mouth / neck portion 100 of the container body B to mount and fix the trigger type liquid ejector A to the container body, and is continuously connected to the lower portion of the main body 20 so as to be rotatable.

  In this example, the main body and the mounting cap 10 are connected via a connecting cylinder member 30 fitted to the main body 20. The main body 20 has a fitting cylinder 34 having a lower end opening whose upper end is closed, and a top cylinder-shaped base cylinder part 21 which is erected with the lower end opened at a rear eccentric position of the top of the fitting cylinder 34. An injection cylinder 22 is projected from the upper part of the base cylinder part 21 to the front, and a cylinder 23 is projected from the lower part to the front, and a plunger 28 is slidably fitted into the cylinder 23. Further, the connecting cylinder member 30 includes a large-diameter cylinder part 31 with an upper end closed and fitted into the fitting cylinder 34, and a vertical cylinder 33 that penetrates the rear eccentric position of the top of the large-diameter cylinder part 31 and opens the lower end. Is fitted and fixed in the base tube portion 21. The upper end of the suction pipe 24 is fitted to the lower end of the vertical cylinder 33, and the lower end is suspended from the bottom of the container body.

  A suction valve 25 is disposed in the lower part of the vertical cylinder 33, and a discharge valve 27 that is normally pressed and closed by an elastic member 26 is provided in the upper part. Further, a communication hole 29 for communicating the inside of the cylinder 23 closed by the plunger 28 and the inside of the vertical cylinder 33 is formed through the base cylinder portion 21 and the vertical cylinder 33 upstream of the discharge valve 27 downstream of the suction valve 25. ing. Further, a communication hole 35 that communicates the inside of the vertical cylinder 33 and the inside of the injection cylinder 22 is drilled through the base cylinder portion 21 and the vertical cylinder 33 downstream of the discharge valve 27. In addition, the flange-like top wall at the upper end of the mounting cap 10 is brought into contact with the upper surface of the flange 32 projecting from the lower outer periphery of the large-diameter cylindrical portion 31 of the connecting cylindrical member 30 so that the mounting cap 10 can be rotated with respect to the main body 20. Wearing.

  The trigger 40 is pivotally attached to the connecting member 50 at the front position of the injection cylinder 22 so that the upper end of the trigger 40 is pivotable. The trigger 40 is vertically suspended from the left and right of the connecting member 50. The lower end portions of the pair of spring plates 41 are connected to the upper portions of both side surfaces of the trigger 40 and are pivotally attached in a state of being constantly urged forward. In addition, the tip of the plunger 28 is linked to the upper part of the trigger 40 so that the plunger 28 can be pushed in by pulling in the trigger 40. The trigger 40 restores the original state from the pushed state by the elastic restoring force of the spring plate 41. The plunger 28 is configured to be pulled back to the original state.

  The connecting member 50 is fitted to the distal end of the injection cylinder 22 by fitting a mounting cylinder portion 51 on the outer periphery of the distal end of the injection cylinder 22. The above-described spring plate 41 is integrally suspended from both sides of the front portion of the mounting cylinder portion 51, and upper end portions of both side plates of the trigger 40 are pivotally attached to both sides behind the portion where the spring plate 41 is suspended. . Further, a substrate 52 that covers the distal end surface of the injection cylinder 22 is provided at the distal end of the mounting cylinder portion 51, a central shaft 53 that forms a cylindrical shape whose end is closed from the center of the front surface of the substrate 52, and a connecting cylinder 54 that protrudes from the periphery. The inside of the injection cylinder 22 communicates with the inside of the connecting cylinder 54 outside the central shaft 53 through a through hole 55 provided in the substrate 52.

  The nozzle 60 protrudes from the rear surface of the front wall 62 with a fitting tube 61 that is rotatably fitted to the outer periphery of the connecting tube 54, and the central shaft 53 extends from the rear surface of the front wall 62 on the inner periphery of the fitting tube 61. A central cylinder 63 is provided on the outer periphery of the central cylinder 63 so as to be able to rotate in a liquid-tight manner. Further, a second concave groove 64 extending in the front-rear direction is provided at a predetermined position on the inner surface rear end of the central cylinder 63, and a first recess extending in the front-rear direction provided at a predetermined position on the outer surface tip of the central shaft 53 of the connecting member 50. The groove 56 and the nozzle 60 are configured to communicate with each other at a predetermined rotational position, and cannot communicate with other rotational positions.

  An ejection hole 66 is formed in the center of the front wall 62 via a spin mechanism 70, and a columnar space-shaped ejection outlet 67 extends from the front of the ejection hole 66. The spin mechanism 70 is engraved on the rear surface of the front wall 62. As shown in FIG. 2, a plurality of spiral radial recesses 68 are formed from the central recess 71 and communicated with the ejection hole 66. The liquid from the concave groove 56 is ejected from the ejection hole 66 in the form of a mist.

  In the present invention, a foaming diffusion mechanism is provided at the tip of the ejection hole 66. The foaming diffusion mechanism includes a jet outlet 67 in the form of the columnar space having a circumferential end 72 as a base end and a tapered peripheral face 73 spreading outward at a tip end. One end of an outside air introduction path 74 that communicates with the outside and introduces outside air is opened on the circumferential surface 72 of the cylinder. Then, the spray liquid from the ejection hole 66 mixed with the outside air from the outside air introduction path 74 is caused to collide with the circumferential surface 72 to foam, and can be ejected from the tip opening of the ejection port 67.

  The jet outlet 67 in this example has a columnar space shape in which a circular protrusion 76 is provided in the center of the front surface and is recessed in the center of the thick front wall 62, and an outlet hole 66 is opened in the center of the back surface. ing. Further, the circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-side large-diameter portion 72b, and one end of an outside-air introduction path 74 that communicates with the outside and introduces outside air to both sides of the small-diameter portion 72a. It is open. Further, in this example, an adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the ejection port 67 that is continuous with the taper circumferential surface 73. The circumferential surface 72 and the adjustment circumferential surface 75 have a true circular structure that is straight in the horizontal direction along the horizontal axis, and a combination of these circumferential surfaces and a tapered circumferential surface that extends in the 360 ° direction from the peripheral edge portion. Can adjust the diffusion state.

  Then, the liquid ejected in a mist form from the ejection hole 66 and the outside air from the outside air introduction path 74 are mixed in the small diameter part 72a, and then the mixed liquid is caused to collide with the large diameter part 72b to cause foam to be generated. It is configured to eject more like a bubble. At this time, the presence of the tapered peripheral surface 73 allows the foam application pattern to be spread in a wide range in a circular shape, and the adjustment peripheral surface 75 can form an application pattern that suppresses excessive expansion of the foam with a clear peripheral edge. .

  The liquid ejector A configured as described above pushes the plunger 28 by pulling the trigger 40 rearward, pressurizes the liquid in the cylinder 23 and opens the discharge valve 27, and the pressurized liquid passes from the injection cylinder 22 to the through hole 55. And is introduced into the spin mechanism 70 via the second concave groove 64 and the first concave groove 56. The liquid ejected in a mist form from the spin mechanism 70 through the ejection hole 66 is mixed with the outside air introduced from the outside air introduction path 74 and collides with the large diameter portion 72b, and is ejected in the form of bubbles from the tip of the ejection port 67. The

  For example, as shown in FIGS. 1 and 4, the sprayed foam application pattern is composed of a relatively large central concentration region p1 and a relatively small-diameter diffusion region p2 around it.

  Next, when the pull-in of the trigger is stopped, the trigger 40 is returned to the original state by the elastic restoring force of the spring plate 41, and the plunger 28 is pulled out, and the suction valve 25 is opened in the cylinder 23 which has become negative pressure to open the inside of the container body B. Liquid is introduced.

  5 to 7 show a second embodiment. In this case as well, for the sake of convenience, the upper part of the drawing is the upper part, the lower part is the lower part, the left side with the jet outlet 67 is the front part, and the opposite is the rear part. The liquid ejector A in this example includes a cylinder 23 that is suspended and fixed in the container body B, and an operating member 80 that protrudes from the inside of the cylinder 23 and is vertically movable in an upwardly biased state. A vertical pump type liquid ejector A2 that pressurizes and depressurizes the inside of the cylinder 23 by vertically moving the operating member 80. The vertical pump type liquid ejector A <b> 2 includes a mounting cap 10, a cylinder 23, and an operating member 80.

  The mounting cap 10 is screwed to the outer periphery of the mouth / neck portion 100 of the container body B to mount and fix the vertical pump type liquid ejector A2 to the container body B, and the upper end portion of the cylinder 23 is fitted and fixed to the inner surface. doing.

  The cylinder 23 is suspended and fixed in the container body B by mounting and fixing the mounting cap 10 to the container body B, and a suction valve 25 is provided in the inner bottom portion. Further, a suction pipe 24 is fitted to the lower end, and the lower end is suspended from the bottom of the container body B.

  The actuating member 80 is always urged upward by a coil spring s and is mounted so as to move up and down. A small-diameter piston 81 that slides in the cylinder 23 is provided at the lower portion, and a large-diameter piston 82 is provided at the outer periphery of the upper portion. A stem member 83 that protrudes and has a liquid flow path provided therein is provided, and an ejection head 84 is attached to the upper end of the stem member 83.

  The ejection head 84 is connected to a stem member 83 by slidably fitting a large-diameter piston 82 to an auxiliary cylinder 85 suspended in the lower portion, and is caused by a stem member 83 biased upward by a coil spring s. While being pushed up, the outer periphery of the auxiliary cylinder 85 is engaged with the upper part of the inner surface of the guide cylinder of the mounting cap 10, thereby preventing upward slipping. Further, the discharge valve port formed in the center of the top wall portion of the auxiliary cylinder 85 is closed with the discharge valve body at the upper end of the stem member 83 to form the discharge valve 27.

  The front surface of the ejection head 84 is surrounded by an annular groove 86 and includes a forward-facing columnar portion 87 for fitting the nozzle 60, and a part of the base end portion of the annular groove 86 is connected via a communication path 88. It communicates with an internal liquid flow path communicating with the discharge valve 27.

  The nozzle 60 is closed at the rear end by a partition wall 92 having a jet hole 66 formed in the center, and includes a cylindrical portion 91 having a columnar space-shaped jet outlet 67 therein. An annular groove is formed from the rear surface of the cylindrical portion 91. A fitting cylinder 90 is provided so as to be fitted to 86. The fitting cylinder 90 is fitted into the annular groove 86 and attached to the ejection head 84. Further, a spin mechanism 70 having the same form as in the example of FIG. 1 is engraved on the rear surface of the nozzle 60, and a radial recess of the spin mechanism 70 is interposed from the communication path 88 through a gap between the fitting cylinder 90 and the columnar portion 87. 68.

  As in the example of FIG. 1, the spout 67 has a base end portion that is a circumferential surface 72, and a distal end portion that has a tapered circumferential surface 73 that spreads outward, and communicates with the outside through the circumferential surface 72. One end of the outside air introduction path 74 to be introduced is opened. Also in this case, the circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-side large-diameter portion 72b, and one end of an outside-air introduction path 74 that communicates with the outside through the small-diameter portion 72a and introduces outside air is opened. In addition, an adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the ejection port 67 that is continuous with the taper circumferential surface 73.

  The vertical pump type liquid ejector A2 configured as described above is configured such that the inside of the cylinder 23 is pressurized by pushing the operating member 80 downward, and the cylinder 23 communicates via the flow path in the stem member 83. 23, the stem member 83 is pushed down relative to the ejection head 84 to open the discharge valve 27, and the pressurized liquid passes from the flow path in the ejection head 84 to the annular groove 86. Is introduced into the spin mechanism 70, and is ejected from the tip opening of the ejection port 67 in the form of bubbles in the same manner as in the example of FIG.

  As in the example of FIG. 1, the sprayed foam application pattern is composed of, for example, a relatively large central concentration region p1 and a relatively small-diameter diffusion region p2 around it, as shown in FIG.

  Next, as the hydraulic pressure decreases, the discharge valve 27 closes and when the pressing of the operating member 80 is stopped, the operating member 80 rises due to the action of the coil spring s, and the suction valve 25 is opened in the cylinder 23 that has become negative pressure to open the container body. The liquid in B is introduced.

  FIG. 8 shows a third embodiment. In the first embodiment, a trigger type liquid ejector A1 having a pump mechanism for pressurizing and depressurizing the inside of a cylinder by a trigger operation provided so as to be swingable. Yes, this example is not shown, but includes a mounting cap 10, a main body 20, a connecting cylinder member 30, a trigger 40, and a connecting member 50 similar to the first embodiment, and only the nozzle 60 is provided. The configuration of the parts is different.

  As in the first embodiment, the nozzle 60 has a fitting cylinder 61 that is pivotably fitted to the outer periphery of the connecting cylinder 54 and protrudes from the rear surface of the front wall 62. From the rear surface of the wall 62, a central tube 63 is fitted on the outer periphery of the central shaft 53 so as to be able to rotate in a liquid-tight manner. Further, a second concave groove 64 extending in the front-rear direction is provided at a predetermined position on the inner surface rear end of the central cylinder 63, and a first recess extending in the front-rear direction provided at a predetermined position on the outer surface tip of the central shaft 53 of the connecting member 50. The groove 56 and the nozzle 60 are configured to communicate with each other at a predetermined rotational position, and cannot communicate with other rotational positions. An ejection hole 66 is formed in the center of the front wall 62 via the spin mechanism 70 similar to that of the first embodiment, and an ejection port 67 in the form of a columnar space is extended ahead of the ejection hole 66.

  Further, similarly to the first embodiment, a foaming diffusion mechanism is provided at the tip of the ejection hole 66. The foaming diffusion mechanism in this example is obtained by adding the configuration of the adjustment taper peripheral surface 77 to the foaming diffusion mechanism in the first embodiment as shown in an enlarged view in FIG. Is provided with a jet outlet 67 in the form of the columnar space provided with a tapered peripheral face 73 that spreads outward at the tip, and communicates with the peripheral face 72 of the jet outlet 67 to the outside. Thus, one end of the outside air introduction path 74 for introducing outside air is opened. And the spray liquid from the ejection hole 66 mixed with the outside air from the outside air introduction path 74 collides with the circumferential surface 72 and foams, and the point which is comprised so that it can eject from the front-end | tip opening of the ejection port 67 is 1st. It is the same as that of an Example. In this case as well, the diffusion state can be adjusted with a combination of a straight circular structure in the horizontal direction along the horizontal axis and a tapered peripheral surface extending in the direction of 360 ° from the peripheral edge. A taper structure extending from the structure is provided in two stages to enable finer adjustment.

  The jet outlet 67 in this example has a columnar space shape in which a circular protrusion 76 is provided in the center of the front surface and is recessed in the center of the thick front wall 62, and an outlet hole 66 is opened in the center of the back surface. ing. Further, the circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-side large-diameter portion 72b, and one end of an outside-air introduction path 74 that communicates with the outside and introduces outside air to both sides of the small-diameter portion 72a. It is open. An adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the spout 67 that is continuous with the taper circumferential surface 73, and an adjustment taper circumferential surface 77 that extends outward is continuously provided at the tip of the adjustment circumferential surface 75. doing.

  Also in the case of this example, the liquid ejected in a mist form from the ejection hole 66 and the outside air from the outside air introduction path 74 are mixed in the small diameter portion 72a, and then the mixed liquid is caused to collide with the large diameter portion 72b to cause foaming. The outlet 67 is configured to be ejected in the form of bubbles from the opening of the tip. At this time, the foam coating pattern spreads in a circular shape over a wide range due to the presence of the taper circumferential surface 73, and after the adjustment circumferential surface 75 adjusts the spread of the coating pattern to a certain extent, the adjustment taper circumferential surface 77 further applies the coating pattern. To spread.

  The bubble jetting action by the operation of the trigger 40 is the same as in the first embodiment.

  For example, as shown in FIG. 10, the sprayed foam application pattern is composed of a relatively large central concentration region p1, a relatively small-diameter diffusion region p2 around it, and a second diffusion region p3 around it. Is done. The presence of the second diffusion region p3 tends to reduce the size of the central concentration region p1 by expanding the entire bubble dispersion region, and can be selectively used depending on the form and application of the first embodiment. It is.

  FIG. 11 shows a fourth embodiment, which is a vertical pump type liquid ejector A in the second embodiment, and although not shown, a mounting cap 10 similar to the second embodiment, a cylinder 23, The operation member 80 is provided, and only a part of the configuration of the nozzle 60 is different.

  Similarly to the second embodiment, the nozzle 60 is provided with a cylindrical portion 91 having a rear end closed by a partition wall 92 having a jet hole 66 formed in the center thereof, and having a columnar space-like jet outlet 67 therein. A fitting cylinder 90 is provided so as to be fitted into the annular groove 86 from the rear surface of the shaped portion 91. The fitting cylinder 90 is fitted into the annular groove 86 and attached to the ejection head 84. Further, a spin mechanism 70 having a similar configuration is engraved on the rear surface of the nozzle 60, and is communicated with the radial recess 68 of the spin mechanism 70 through a gap between the fitting cylinder 90 and the columnar portion 87 from the communication path 88. Yes.

  As with the third embodiment, the spout 67 has a base end portion that is a circumferential surface 72 and a distal end portion that has a tapered circumferential surface 73 that spreads outward, and communicates with the outside through the circumferential surface 72. One end of the outside air introduction path 74 to be introduced is opened. Also in this case, the circumferential surface 72 is composed of a proximal-side small-diameter portion 72a and a distal-side large-diameter portion 72b, and one end of an outside-air introduction path 74 that communicates with the outside through the small-diameter portion 72a and introduces outside air is opened. Furthermore, an adjustment circumferential surface 75 that adjusts the degree of diffusion is provided at the tip of the ejection port 67 that is continuous with the taper circumferential surface 73, and the adjustment taper circumferential surface 77 that spreads outward at the tip of the adjustment circumferential surface 75. Are connected.

  Also in the case of this example, the liquid ejected in a mist form from the ejection hole 66 and the outside air from the outside air introduction path 74 are mixed in the small diameter portion 72a, and then the mixed liquid is caused to collide with the large diameter portion 72b to cause foaming. The outlet 67 is configured to be ejected in the form of bubbles from the opening of the tip. At this time, the foam coating pattern spreads in a circular shape over a wide range due to the presence of the taper circumferential surface 73, and after the adjustment circumferential surface 75 adjusts the spread of the coating pattern to a certain extent, the adjustment taper circumferential surface 77 further applies the coating pattern. To spread.

  The ejection action by the operation of pushing down the actuating member 80 is the same as in the second embodiment. Moreover, the application pattern of the ejected foam is the same as that of the third embodiment.

  In each of the above examples, the adjustment circumferential surface 75 or the adjustment circumferential surface 75 and the adjustment taper circumferential surface 77 are shown. However, the adjustment circumferential surface 75 or the adjustment circumferential surface 75 and the adjustment taper circumferential surface 77 are shown. The object of the present invention can also be achieved when the circumferential surface 72 and the tapered circumferential surface 73 are provided without providing the above.

A: Liquid ejector A1: Trigger type liquid ejector A2: Vertical pump type liquid ejector 10 ... mounting cap, 20 ... main body, 21 ... base cylinder part, 22 ... injection cylinder, 23 ... cylinder,
24 ... pipe for suction, 25 ... suction valve, 26 ... elastic member, 27 ... discharge valve,
28 ... Plunger, 29 ... Communication hole, 30 ... Connection cylinder member, 31 ... Large diameter cylinder part,
32 ... Flange, 33 ... Vertical cylinder, 34 ... Fitting cylinder,
35 ... Communication hole, 40 ... Trigger, 41 ... Spring plate, 50 ... Connecting member, 51 ... Installation cylinder part,
52 ... Substrate, 53 ... Center axis, 54 ... Connecting cylinder,
55 ... Through hole, 56 ... First groove, 60 ... Nozzle, 61 ... Fitting cylinder, 62 ... Front wall,
63 ... center tube, 64 ... second concave groove, 66 ... jet hole, 67 ... jet port, 68 ... radial recess, 70 ... spin mechanism, 71 ... central recess, 72 ... circumferential surface, 72a ... small diameter portion,
72b ... large diameter portion, 73 ... tapered circumferential surface, 74 ... outside air introduction path, 75 ... adjusted circumferential surface,
76 ... Circular protrusion, 77 ... Adjusting taper circumferential surface, 80 ... Actuating member, 81 ... Small-diameter piston,
82 ... large-diameter piston, 83 ... stem member, 84 ... ejection head, 85 ... auxiliary cylinder,
86 ... annular groove, 87 ... columnar part, 88 ... communication path, 90 ... fitting cylinder, 91 ... cylindrical part,
92 ... partition wall, s ... coil spring, p1 ... central concentration region, p2 ... diffusion region,
B: Container body 100 ... mouth and neck

Claims (4)

The cylinder (23) is pressurized and depressurized to provide a pump mechanism for ejecting the liquid in the container body (B) from the ejection hole (66), and from the ejection hole (66) via the spin mechanism (70) In a liquid ejector that ejects liquid to
A foaming diffusion mechanism is provided at the tip of the ejection hole (66), and the foaming diffusion mechanism is provided with a jetting outlet (67) in the form of a columnar space extending toward the tip of the ejection hole (66). The end portion is a circumferential surface (72), and the distal end portion is provided with a tapered circumferential surface (73) extending outward,
The circumferential surface (72) is constituted by a proximal end side small diameter portion (72a) and a distal end side large diameter portion (72b), and
One end of an outside air introduction path (74) that communicates with the outside and introduces outside air to the small diameter part (72a) of the circumferential surface (72),
The spray liquid from the ejection hole (66) mixed with the outside air from the outside air introduction path (74) collides with the large diameter portion (72b) of the circumferential surface (72) to foam, and the tip of the ejection port (67) It can be ejected from the opening,
A liquid ejector characterized in that an adjustment circumferential surface (75) for adjusting the degree of diffusion is provided at the tip of a jet outlet (67) continuous with the taper circumferential surface (73).   The liquid ejector according to claim 1, wherein an adjustment taper circumferential surface (77) extending outward is continuously provided at a tip of the adjustment circumferential surface (75).   The liquid ejector according to claim 1 or 2, wherein the liquid ejector is a trigger type liquid ejector provided with a pump mechanism that pressurizes and depressurizes the inside of the cylinder (23) by a trigger operation provided so as to be swingable. A cylinder (23) suspended and fixed in the container body (B), and an operating member (80) provided so that the upper part protrudes from the cylinder (23) and can be moved up and down in an upward biased state. The liquid ejector according to claim 1 or 2 , wherein the liquid ejector is a vertical pump type liquid ejector that pressurizes and depressurizes the inside of the cylinder (23) by the vertical movement of the member (80).