JP2005288256A - Trigger type spraying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trigger type spraying device with a spraying nozzle fixed firmly to the device body. <P>SOLUTION: This spraying device 10 has a pump P1 sucking and pressurizing a content liquid in a container by pulling an operation lever 11 repeatedly, the body 12 having a supply passage 12a supplying the liquid pressurized by the pump P1 to the spraying nozzle 13, a plunger 15 arranged on the side of the opening of the passage 12a of the body 12 and a plunger adaptor 16 supporting the plunger 15 elastically with a spring (s), and the plunger opens the nozzle 13 under a liquid pressure beyond the elastic force of the spring (s). A cyclic wall 16 having a protruded part 17 protruding outward is arranged so as for the protruded part 17 to be engaged in the back surface of the nozzle 13 and surround the plunger 15, and an outside wall 18 having an opening 19 to be engaged in the protruded part 17 and surrounding the cyclic wall 16 of the body 12 is disposed on the back surface of the nozzle 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention repeatedly pumps the operation lever to suck and pressurize the content liquid in the container, and a body having a feed path for feeding the content liquid pressurized by the pump toward the injection nozzle; Further, the present invention relates to a trigger type ejector including a valve body that is elastically supported on the feeding path side of the body and is opened by a hydraulic pressure exceeding the elastic force.

  As a trigger type sprayer, the liquid from the spray nozzle (mold remover, residential detergent, residential wax, clothing finish, clothing paste, hairdressing cosmetics, insecticides, etc.) In general, spraying in the form of foam is known, and a technique for rotatably fitting a spray nozzle to the tip of a body is known (for example, see Patent Document 1).

Japanese Utility Model Publication No. 60-27484

  However, in the case of such a conventional technique, since the annular groove and the annular wall provided at the tip of the body are only fixed to the back surface of the injection nozzle by means such as undercut, the injection nozzle is firmly fixed to the body. There was room for improvement. In addition, when the spray nozzle rotates with respect to the body, it must be designed taking into account that looseness occurs between the spray nozzle and the body, resulting in a decrease in airtightness.

  The problem to be solved by the present invention has been made in view of these facts, and is to provide a trigger type ejector that firmly fixes an injection nozzle to a body.

  The present invention repeatedly pumps the operation lever to suck and pressurize the content liquid in the container, and a body having a feed path for feeding the content liquid pressurized by the pump toward the injection nozzle; A trigger-type ejector comprising a valve body elastically supported on the opening side of the feeding path of the body and opened by a hydraulic pressure exceeding the elastic force, and a protruding portion protruding outwardly on the body An annular wall that surrounds the valve body and fits on the rear surface of the injection nozzle is provided, and a concave portion or an opening that engages with the convex portion is provided on the rear surface of the injection nozzle to surround the annular wall of the body It is characterized in that an outer wall is provided.

  In this invention, it is preferable that the said convex part is provided with the inclined surface or curved surface which pushes up the said outer wall. Moreover, in this invention, it is preferable that the said outer wall is equipped with the inclined surface or curved surface which guides the said convex part inside the edge. Furthermore, in this invention, it is preferable to provide the lid | cover which closes the injection port of a content liquid in the front surface of the said injection nozzle.

  According to the present invention, the body is provided with an annular wall surrounding the valve element disposed on the opening side of the feeding path, the annular wall is fitted to the back surface of the injection nozzle, and the outer wall is provided on the back surface of the injection nozzle. The injection nozzle can be firmly fixed to the body by engaging the recessed portion or opening formed on the outer wall and the projecting portion protruding outward formed on the annular wall. Therefore, according to the present invention, it is possible to provide a trigger type ejector that is resistant to impacts such as dropping, has excellent durability, and has excellent airtightness without causing looseness between the injection nozzle and the body. . Further, in the present invention, since the valve body is arranged on the opening side of the feeding path in the body, the remaining space to the injection port becomes extremely small, and after injection, such as after draw, reaches from the valve body to the injection port. It is possible to prevent occurrence of dripping (liquid dripping) of the content liquid remaining in the space, and it is possible to realize a fine and stable spray with good liquid drainage.

  In addition, in the present invention, if the inclined surface or curved surface that pushes up the outer wall is provided on the convex portion, the engagement between the convex portion of the annular wall and the concave portion or opening of the outer wall is facilitated, and the assembly workability is good. . In the present invention, even if an inclined surface or curved surface for guiding the convex portion is provided on the inner edge of the outer wall, the engagement between the convex portion of the annular wall and the concave portion or opening of the outer wall is facilitated, and the assembling work is performed. Good sex. In this case, if an inclined surface or a curved surface is provided on both the convex portion of the annular wall and the inner edge of the outer wall, the assembling workability is the best. Furthermore, in the present invention, if a cover for closing the injection port of the content liquid is provided on the front surface of the injection nozzle, it is possible to further prevent leakage of the content liquid after injection, and to easily solidify the content. It is possible to provide a trigger type ejector having a function of preventing solidification of the liquid.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a trigger type ejector 10 according to a first embodiment of the present invention. Reference numeral 11 denotes an operation lever, and reference numeral 12 denotes a container (not shown) by repeatedly checking the operation lever 11. It is a body provided with a known pump P1 composed of a piston and a cylinder for sucking and pressurizing the liquid. The body 12 includes a tube T that communicates with the interior of the container, an intake I that is attached to the mouth (not shown) of the container via a mounting ring R, and an intake that is held by the intake I and opens and closes by the action of the pump P1. A valve (ball valve) B and a supply path 12a for supplying the content liquid supplied from the suction valve B and pressurized by the pump P1 toward the injection nozzle 13 are provided.

  A plunger (valve element) 14 for opening and closing the injection nozzle 13 is disposed on the opening side of the feeding path 12a of the body 12, and this plunger 14 is elastically supported by a plunger adapter 15 via a spring s1. . The plunger adapter 15 has a spacer 15a penetrating the feeding path 12a, and feeds the pressurized liquid to the plunger 14 through one or a plurality of spline grooves 15g provided on the outer periphery of the spacer 15a. . As a result, when the pressure of the content liquid fed toward the plunger 14 exceeds the elastic force of the spring s1, it is separated from the injection nozzle 13 to open the injection port 13a of the injection nozzle 13 and inject the content liquid to the outside. To do. In this case, by passing the spacer 15a through the feed path 12a, the extra space can be reduced, reducing the number of initial suctions and causing dripping of the liquid after injection, such as after-draw. It can be prevented, and a fine and stable spray with good liquid breakage can be realized.

  Furthermore, the body 12 is integrally provided with an annular wall 16 that surrounds and houses the plunger 14 together with the plunger adapter 15 at the tip thereof. The annular wall 16 is undercut fitted into an annular groove 13g provided on the back surface of the injection nozzle 13, and a convex portion 17 protruding outward is formed on the outer periphery of the annular wall 16 thereof. Further, an outer wall 18 surrounding the annular wall 16 is integrally provided on the back surface of the injection nozzle 13, and an opening 19 that engages with the convex portion 17 of the annular wall 16 is formed in the outer wall 18.

  According to such a configuration, the annular wall 16 surrounding the plunger 14 disposed on the opening side of the feed path 12a is provided in the body 12, the annular wall 16 is fitted into the annular groove 13g of the injection nozzle 13, and the injection nozzle The injection nozzle 13 is firmly fixed to the body 12 by providing an outer wall 18 on the back surface of 13 and engaging an opening 19 formed in the outer wall 18 with an outward projecting protrusion 17 formed in the annular wall 16. can do. Therefore, the trigger type ejector 10 according to the present embodiment is more resistant to impacts such as dropping and superior in durability than the conventional one, and is excellent in airtightness without causing looseness between the injection nozzle 13 and the body 12. . Further, in this embodiment, since the plunger 14 is disposed on the opening side of the feeding path 12a in the body 12, the remaining space up to the injection port 13a becomes very small, and after-injection of the liquid after injection, Occurrence of dropping (liquid dripping) can be prevented, and fine and stable spraying with good liquid drainage can be realized.

  In the present embodiment, the convex portion 17 of the annular wall 16 is provided with an inclined surface 17f that pushes up the outer wall 18. According to this configuration, the engagement between the convex portion 17 of the annular wall 16 and the opening 19 of the outer wall 18 becomes easy, and the assembly workability is good. Furthermore, in this embodiment, the front end Ce of the cover C1 attached to the body 12 is aligned with the rear end 18e of the outer wall of the injection nozzle 13. According to such a configuration, since the opening 19 can be visually observed, the work is facilitated even when the injection nozzle 13 is disassembled from the body 13 due to disposal or the like.

  2A and 2B are a top view and a longitudinal sectional view, respectively, of a trigger type ejector 20 according to the second embodiment of the present invention. In the present embodiment, the same parts as those in FIG.

  In this embodiment, the body 22 includes a pump P2 that repeatedly checks the operation lever 21 to suck and pressurize liquid in a container (not shown), and is supplied from the suction valve B and added by the pump P2 as in the first embodiment. A feeding path 22a for feeding the pressurized content liquid toward the jet nozzle 23 is provided.

  A plunger 24 for opening and closing the injection nozzle 23 is disposed on the opening side of the feeding path 22a of the body 22 as in the first embodiment, and this plunger 24 is elastically supported by a plunger adapter 25 via a spring s2. Has been. The plunger adapter 25 also has a spacer 25a penetrating the feed path 22a, and feeds the pressurized liquid to the plunger 24 through one or more spline grooves 25g provided on the outer periphery of the spacer 25a. . As a result, when the pressure of the content liquid fed toward the plunger 24 exceeds the elastic force of the spring s2, it is separated from the injection nozzle 23 and the injection port 23a of the injection nozzle 23 is opened. In this case as well, by passing the spacer 25a through the feeding path 22a, the extra space can be reduced, and the liquid drop after dropping (liquid dripping) occurs, such as a reduction in the number of initial suctions and after-drawing. Therefore, it is possible to realize a fine and stable spray with good liquid breakage.

  Further, in this embodiment, the body 22 is integrally provided with an annular wall 26 that surrounds and accommodates the plunger 24 together with the plunger adapter 25 at the tip thereof. The annular wall 26 is formed in an annular groove 23g provided on the back surface of the injection nozzle 23. Convex portions 27 are formed on the outer periphery of the upper portion and projecting outward. The injection nozzle 23 is also integrally provided with an outer wall 28 surrounding the annular wall 26 on the back surface, and the outer wall 28 is formed with an opening 29 that engages with the convex portion 27 of the annular wall 26.

  Also in such a configuration, the body 22 is provided with an annular wall 26 surrounding the plunger 24 disposed on the opening side of the feed path 22a, and the annular wall 26 is fitted into the annular groove 23g of the injection nozzle 23, and the injection nozzle The injection nozzle 23 is firmly fixed to the body 22 by providing an outer wall 28 on the back surface of 23 and engaging an opening 29 formed in the outer wall 28 with an outwardly projecting protrusion 27 formed in the annular wall 26. can do. Therefore, the trigger type ejector 20 of this embodiment is also resistant to impacts such as dropping and excellent in durability, and is excellent in air tightness without causing looseness between the injection nozzle 23 and the body 22. Also in this case, since the plunger 24 is arranged on the opening side of the feeding path 22a in the body 22, the remaining space up to the injection port 23a becomes very small, and the content liquid after injection such as after-drawing drops (liquid Occurrence of dripping) can be prevented, and fine and stable spraying with good liquid drainage can be realized.

  In particular, in this embodiment, a lid 23h that closes the content liquid injection port 23a is rotatably supported by a pipette 23p on the front surface of the injection nozzle 23, and together with the plunger 24, leakage prevention and content liquid are more complete. It is possible to provide an effect of preventing clogging of the injection port 23a due to solidification.

  Further, in this embodiment, in addition to the inclined surface 27f that pushes up the outer wall 28 of the injection nozzle 23 to the convex portion 27 of the annular wall 26, the inclined surface 28f that guides the convex portion 27 to the inside of the edge 28e of the outer wall 28. Is provided. According to such a configuration, the engagement between the convex portion 27 of the annular wall 26 and the opening 29 of the outer wall 28 is further facilitated, and the assembling workability is the best. In order to improve the assembling workability, it is of course only necessary to provide the inclined surface 28f inside the edge 28e of the outer wall 28.

  Further, in this embodiment, the cover C2 attached to the body 22 covers and conceals the opening 29n of the outer wall 28. According to such a configuration, it is possible to provide a trigger type ejector having a beautiful appearance.

  The above description is merely illustrative of some forms of the present invention, and various design changes can be made depending on the application. For example, the convex portion formed on the annular wall of the body preferably has a right-angled triangular shape as described with reference numerals 17 and 27, but may have a square shape, a semi-circular shape, or the like. Further, the openings 19 and 29 formed in the outer wall of the injection nozzle may be recessed portions that are recessed without opening to the outside as long as the protrusions 17 and 27 can be engaged.

It is a longitudinal cross-sectional view of the trigger type ejector which is the 1st form of this invention. (a), (b) is the top view and longitudinal cross-sectional view of the trigger type ejector which are the 2nd form of this invention, respectively.

Explanation of symbols

10 Trigger type ejector
11 Control lever
12 body
13 Injection nozzle
14 Plunger (valve)
15 Plunger adapter
16 annular wall
17 Convex
18 Exterior wall
19 opening
20 Triggered ejector
21 Control lever
22 body
23 Injection nozzle
23h Lid (Leakage prevention lid, Solidification prevention lid)
24 Plunger (valve)
25 Plunger adapter
26 Annular wall
27 Convex
28 Exterior wall
29 opening

Claims (4)

A pump that repeatedly checks the operation lever to suck and pressurize the content liquid in the container, a body having a feed path for feeding the content liquid pressurized by the pump toward the injection nozzle, A trigger type ejector comprising a valve body that is elastically supported on an opening side of a feeding path and is opened by a fluid pressure exceeding the elastic force;
The body is provided with an annular wall that protrudes outward and surrounds the valve body and engages the back surface of the injection nozzle, and the back surface of the injection nozzle engages with the protrusion. Or the trigger type sprayer which provided the outer wall which has an opening and encloses the annular wall of the said body.   The trigger type ejector according to claim 1, wherein the convex portion includes an inclined surface or a curved surface that pushes up the outer wall.   3. The trigger type ejector according to claim 1, wherein the outer wall includes an inclined surface or a curved surface that guides the convex portion on an inner side of an edge thereof.   The trigger type ejector according to any one of claims 1 to 3, wherein a lid for closing the ejection port of the content liquid is provided on a front surface of the ejection nozzle.

Images