WO2008001781A1

WO2008001781A1 - Sprayer hood and sprayer

Info

Publication number: WO2008001781A1
Application number: PCT/JP2007/062821
Authority: WO
Inventors: Takeshi Muraki; Shingo Katayama
Original assignee: Kobayashi Pharmaceutical Co., Ltd.
Priority date: 2006-06-29
Filing date: 2007-06-26
Publication date: 2008-01-03
Also published as: JP2008007167A; JP4986514B2

Abstract

Provided are a sprayer hood where dropping of liquid drops from the hood is reliably prevented and, even if the hood comes to be in contact with an object or a placement surface, the liquid does not adhere to it, and a sprayer having such a hood. The hood has an installation section (10) for installation to a sprayer, a hood body (20) extending so as to define a flying range of an ejected object with a position facing an ejection opening of the sprayer as the base end of the extension, and a liquid containing section (30) provided at the forward end side of the hood body. The liquid containing section is bent to the inside of the hood body from a portion at the forward end side of the hood body (20), has a folded back wall (35) extending to the base end side of the hood body from a plane passing the forward end of the hood body. The liquid containing section forms an annular groove (34) extending in the direction along the edge of the forward end of the hood body.

Description

Specification

Sprayer hood and sprayer

Technical field

TECHNICAL FIELD [0001] The present invention relates to a sprayer hood that is attached to a position facing a spray port of a sprayer to limit a sprayed region of the spray and a sprayer to which the hood is attached.

Background art

[0002] This type of sprayer hood is used in various fields in order to cause a sprayed product from the sprayer to reach an object in a concentrated manner. For example, it is used in applications such as spraying deodorants and fragrances on clothes, spraying glue in the form of a mist, spraying chemicals on horticultural plants, spraying moisturizing agents on target areas, and the like.

[0003] These sprayer hoods generally have a cylindrical shape, funnel shape or the like that delimits the sprayed area of the spray from the spray port, and a small end facing the spray port at the attachment end to the sprayer. A hole is provided and the other end is open (see, for example, Patent Document 1).

[0004] This sprayer hood is used in such a manner that it is attached to the sprayer by the attachment end, and the open end is applied to the object S or approached to perform the spraying operation. As a result, the mist-like propellant is sprayed onto the object in a concentrated manner in the area surrounded by the hood that does not dissipate over a wide area.

[0005] However, if the spray is over a long period of time, or if the propellant is a high-density mist, the propellant adheres to the inner surface of the hood and drops into droplets. When the droplets become large, they drop from the hood and adhere to the object or surrounding area, or cause problems such as dirt or discoloration.

[0006] In order to cope with this, there has been proposed a structure for holding droplets adhering to the inner surface of the hood for a sprayer (for example, Patent Documents 2 and 3). The sprayer hood described in Patent Document 2 has a liquid storage groove recessed along the inner side of the hood at the part located on the lower side of the hood (the lower side of the hood when the center line from the mounting end toward the open end is horizontal). The liquid droplets flowing down are collected in the liquid accumulation groove to prevent the liquid droplets from falling out of the hood. In addition, the sprayer hood disclosed in Patent Document 3 has a sponge or non-stick on the entire circumference of the open end (tip opening) of the hood. By providing a liquid absorbing member of woven fabric and absorbing the liquid droplet flowing down along the inner surface of the hood, the liquid absorbing member tries to prevent it from falling out of the hood.

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-34006

Patent Document 2: JP 2005-239274 A

Patent Document 3: Japanese Unexamined Patent Publication No. 2005-270823

Disclosure of the invention

Problems to be solved by the invention

[0007] However, the sprayer hood described in Patent Document 2 has a liquid storage groove only on the lower side of the hood, and the liquid storage groove has an injection direction when the hood is attached. When horizontal, it is provided so as to be recessed from the inner surface of the hood substantially vertically downward (that is, substantially perpendicular to the center line toward the open end of the hood mounting end). Therefore, when the open end of the hood is tilted downward, especially when the hood is tilted until the surface of the open end is horizontal or close to this, the liquid in the liquid pool groove spills out. Produce.

[0008] Further, since the hood for a sprayer of Patent Document 3 is provided with a liquid absorbing member at the open end of the hood, when spraying with the open end applied to an object, the hood can be used with the open end facing downward. If placed, the problem is that the absorbed liquid adheres to the object and the installation surface.

[0009] The present invention solves these problems of the prior art, reliably prevents droplets from dropping from the hood, and does not cause liquid adhesion even when the hood contacts an object or installation surface. An object of the present invention is to provide a food hood and a sprayer equipped with the hood.

Means for solving the problem

In order to achieve the above object, the present invention is a sprayer hood that is attached to a position facing a spray port of a sprayer and restricts a spray region of the spray, and includes a mounting portion for the sprayer and a spray port A hood main body extending so as to define the scattering region with the facing position as a base end, and a liquid reservoir portion provided on a distal end side of the hood main body, the liquid reservoir portion from a distal end side portion of the hood main body Bends inward and has a folding wall that extends to the base end side of the hood main body with respect to the plane connecting the front end of the hood main body, and extends in the direction along the front edge of the hood main body. The present invention provides a sprayer hood characterized in that an annular groove is formed (invention).

1).

[0011] In order to achieve the above object, the present invention is characterized in that the sprayer hood according to the invention 1 is attached by the attachment portion in order to limit a sprayed region of the ejected matter from the injection port. A nebulizer is provided (Invention 2).

[0012] The above-mentioned "spraying region of the projectile" includes a region (injection region) directly ejected from the ejection port and a region (diffusion region) in which the projectile is diffused by being affected by the object or air current. .

[0013] The "annular groove extending in the direction along the front edge of the hood body" means that the annular groove extends in a direction along the front edge of the hood body as a whole, and the front edge is bent in a wave shape or the like. In this case, in addition to a bent annular groove along the bent shape, an annular annular groove along a line connecting the peaks of the bent shape and a center line, and an annular groove having a shape close thereto are also included.

The invention's effect

[0014] In the sprayer hood according to the present invention, a hood body extending so as to define a scattering region with a position facing the injection port as a base end includes a liquid reservoir at a tip side portion of the hood body, The liquid reservoir is provided with a folding wall that bends inward from the distal end portion of the hood main body and extends toward the proximal end of the hood main body with respect to a plane connecting the distal end portions of the hood main body. With this structure, the folded wall forms an annular groove extending in the direction along the front edge of the hood body.

[0015] Therefore, the liquid droplets flowing down along the inner surface of the hood are held in the liquid reservoir, and are prevented from falling out of the hood. In addition, when the open end of the hood is tilted downward while the liquid has accumulated in the liquid reservoir, especially when the hood is tilted until the open end surface is horizontal or close to this, Since the liquid is held on the folded wall, it is surely prevented from spilling from the annular groove. In addition, since the liquid is held by being blocked by the folded wall with respect to the outside, there is no problem of the liquid adhering to the target object or the installation surface as it is held by the liquid absorbing member.

In the sprayer according to the present invention, the sprayer hood is attached by the mounting portion in order to limit the spray region of the sprayed material from the spraying port. By taking advantage of the advantages obtained by the hood, it is possible to effectively prevent the droplets attached to the hood from falling.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The same or similar parts in the drawings may be denoted by the same reference numerals and description thereof may be omitted.

[0018] FIG. 1 is a longitudinal sectional view showing a state in which the sprayer hood according to one embodiment of the present invention is mounted on an aerosol sprayer, and FIG. 2 is a longitudinal section showing a state in which the sprayer hood is removed. FIG. This sprayer 100 has an operation button 102 attached to the upper part of a container body 101 containing a chemical solution. When the button 102 is depressed, the valve opens to make the chemical solution mist by the internal pressure of the container, and the spray port of the button. Injected from 102a. With respect to this embodiment, for the sake of explanation, the injection direction from the sprayer 100 will be referred to as the front.

[0019] In the container body 101, a substantially hemispherical cover 104 and a mountain cup 105 at the center thereof are closed at the top of the bottomed cylindrical trunk 103, and the top of the trunk 103, the cover 104, and the force bar. 104 and the mountain cup 105 are joined together by fastening portions 103a and 104a. Further, a cap 106 that fits into the tightening portion 103 a and surrounds the button 102 is attached to the upper portion of the container body 101. The cap 106 has a through-hole 106a through which the button 102 passes loosely in the center, and an opening 106b is formed at a position where the injection port 102a of the button 102 faces, and on the opposite side in the radial direction, a finger is received during operation. A notch 106 c opened upward is formed. Further, on the opening portion 106b side, a connecting portion 110 for connecting a sprayer hood described below is provided.

[0020] Fig. 3 shows a hood 1 for a sprayer, (a) is a horizontal cross-sectional view, corresponding to a cross section taken along line A-A in (b), and (b) in arrow B in (a). It is the side view seen from the direction. As shown in the figure, the sprayer hood 1 includes a mounting portion 10 coupled to the coupling portion 110, a hood main body 20 extending so as to define a spraying region of a sprayed object with a position facing the ejection port 102a as a base end, And a liquid reservoir 30 provided at the front end side of the hood body. In this embodiment, the hood body 20 has a shape that expands in a funnel shape from the proximal end portion to the distal end side. The attachment portion 10 includes a small tube portion 11 extending from the base end of the hood main body 20 and a base end portion on the side wall of the hood main body 20. A pair of legs 12 extending in parallel with each other across the small tube portion 11

FIG. 4 shows the cap 106, where (a) is a front view, (b) is a longitudinal sectional view, (c) is a rear view, and (d) is a bottom view. The coupling part 110 of the cap 106 corresponds to the attachment part 10 of the hood 1 and extends forward from a position surrounding the opening 106b, and receives the receiving cylinder 111 closely fitted to the small cylindrical part 11, and both sides of the receiving cylinder 111. And a recess 112 for receiving the leg 12 is formed. The pair of leg portions 12 are provided with locking projections 12a projecting radially outward at their tips, and locking grooves 112a for receiving the locking projections 12a are formed on the side walls of the concave portions 112. At the lower end portion of the cap 106, a protrusion 106d is provided at an interval to be locked when the cap 106 is fitted to the tightening portion 103a and to hold the fitting state of the cap 106.

In this embodiment, the liquid reservoir 30 is formed by a ring 30a fitted to the front end edge of the hood main body 20 as shown in the vertical cross section in FIG. 5 (a) and FIG. For the fitting, the hood body 20 has a receiving portion for the ring 30a at the tip of the funnel-shaped portion 21. That is, an outer cylindrical portion 22 parallel to the central axis extends from the funnel-shaped portion 21, and an outward flange 23 is provided at the end edge thereof. Further, an inner cylinder part 24 is formed in a body-like manner at a distance from the outer cylinder part 22 on the radially inner side of the outer cylinder part 22.

[0023] The ring 30a has a fitting portion corresponding to the receiving portion. That is, as shown in an enlarged view in FIG. 5 (b) and FIG. 6, the ring 30a includes an annular tip wall 33 along a plane parallel to the tip opening edge of the hood body 20, and an outer portion of the tip wall 33. It has a double structure including a fitting wall 31 that is short and extends in a cylindrical shape and a rear wall 32 that extends in the same direction as the inner partial force fitting wall 31 of the tip wall 33. The rear wall 32 is a distance from the fitting wall 31 so as to form a liquid reservoir space with the inner cylinder portion 24 in a state where the fitting wall 31 is inserted into the tip of the hood body 20. It extends. In this embodiment, the rear wall 32 is composed of a rising portion 32a from the tip wall 33 and an extension portion 32b which is located inward in the radial direction through the stepped portion and extends substantially parallel to the fitting wall 31. ing. The fitting wall 31 is tightly inserted between the outer cylindrical portion 22 and the inner cylindrical portion 24 of the hood body 20, and the inner cylindrical portion 24 is tightly inserted between the fitting wall 31 and the rising portion 32a. It is the size to be inserted. Further, a minute protrusion 31a is provided on the outer surface so as to ensure the holding in the inserted state. [0024] Therefore, when the ring 30a is inserted into the front end portion of the hood main body 20 and united, the front end wall 33 extends from the front end edge of the hood main body 20 by bending to the inside of the hood main body, and the rear wall 32 It extends to the base end side of the hood main body 20 so as to form an angle of 90 ° with respect to a plane P (FIG. 6) connecting the distal ends of the hood main body 21, and is positioned parallel to the central axis CL of the hood main body 20. The front wall 33 and the rear wall 32 form a folded wall 35, and the folded wall constitutes the liquid reservoir 30. Since the folding wall 35 continuously extends in an annular shape along the hood main body edge, an annular groove 34 is formed between the inner wall portion 24 and the hood main body edge.

[0025] The sprayer hood 1 can be used as follows. With the cap 106 attached to the sprayer 100, the small cylinder part 11 and the leg part 12 of the hood body 20 are engaged with the receiving cylinder 111 and the recess 112 of the coupling part 110, and the hood 1 is attached to the cap 106. In this state, like the conventional sprayer with a hood, the object in the container body may be jetted by placing or approaching the object and pressing the button 102. If the spray lasts for a long period of time, or if the propellant is in the form of a high-density mist, the propellant may adhere to the inner surface of the hood and become droplets, which may be large. However, the droplets that have moved along the inner surface of the hood accumulate in the liquid reservoir 30 and are prevented from dropping from the hood. Since the liquid reservoir 30 forms an annular groove along the front edge of the hood body by the folding wall 35, the liquid drop prevention effect is effective over the entire circumference around the injection direction from the injection port 102a. can get. Also, the folding wall 35 of the liquid reservoir 30 bends inward of the hood main body, and the rear wall 32 forms an angle of 90 ° with respect to the plane connecting the tip of the hood main body 20. Even if the hood is inclined until the open end of the hood 1 is inclined downward, especially when the open end surface is horizontal or close to this, the liquid in the liquid reservoir 30 is extended to the base end side. There is no spillage.

[0026] In order to obtain the effect of preventing the liquid droplet from dropping, the folding wall 35 (particularly the inner surface thereof) does not necessarily need to form an angle of 90 ° with respect to the plane P connecting the front ends of the hood body. As illustrated, it suffices that at least the distance dl between the plane P and the most proximal portion is folded back to be larger than the distance d2 between the plane P and the most distal portion. The position where the folding wall is provided is not limited to the tip of the hood body, but is located closer to the tip than the droplet generation range. What is necessary is just to provide in a hood main body so that it may place. The cross-sectional shape of the folded wall can be various forms such as a linearly extending shape, an arc shape by a curve, a combination of these, and a bowl shape. As a result, even when the hood is inclined until the open end surface is horizontal or close to the surface, the droplets are held inside the folded wall 35 (annular groove 34). Usually, the shape of the hood body is set so as not to prevent the injection of the injection and to prevent unnecessary diffusion. Therefore, most of the ejected matter is directed to the object, and the amount of droplets generated by the ejection is not so large, so that the droplets are prevented from falling at least in the folded state. However, when the amount of generated droplets is large, it is desirable to appropriately set the shape and dimensions of the folded wall according to the amount.

[0027] The liquid accumulated in the liquid reservoir 30 vaporizes with time and disappears when the propellant is volatile. When the propellant is non-volatile, the accumulated liquid is appropriately cleaned and removed. In this case, if the liquid reservoir has a fitting structure as in this embodiment and is detachable from the hood body, it is convenient because the liquid reservoir can be removed and cleaned.

[0028] It should be noted that the hood 1 can also be provided with a backflow prevention groove 26 near the base end, as shown by a one-dot chain line in FIG. The backflow prevention groove 26 includes an annular mounting wall 26a that is fixed to the inner surface of the hood main body 20 by adhesion or the like, and an annular liquid receiving wall 26b that is bent from the mounting wall to the hood tip side. The liquid in the section 30 or the liquid drop force on the front end side of the hood main body 20 is designed to receive the liquid when it flows to the hood base end side. Therefore, even if the hood 1 is tilted so that the open end faces upward, the liquid flowing to the base end side is received by the backflow prevention groove 26 and flows back to the cap 106 and the button 102, and from there to the outside Leakage is prevented. The liquid receiving wall 26b of the backflow prevention groove 26 protrudes inward from the hood main body 20 and extends to the front end side of the hood main body 20 (mounting wall 26a) with respect to the plane connecting the front end of the hood main body 20. desirable. As a result, when the open end of the hood is inclined upward, the liquid is held inside the liquid receiving wall 26b even when the hood is inclined until the surface of the open end is horizontal or close to this. As a result, backflow to the hood base end is reliably prevented.

[0029] Hereinafter, examples using the hood according to the above embodiment and a sprayer equipped with the hood will be described. FIG. 8 shows a sprayer 100 equipped with the hood 1 according to the above embodiment, As a comparative example, an experiment using a sprayer in which a liquid reservoir 30 (adapter) is removed from the hood 1 as a hood is schematically shown. As the contents of the aerosol sprayer, a deodorizing composition comprising ethanol (25% by weight), a surfactant-based deodorant (5% by weight) and a liquefied puffer gas (70% by weight) was used. The sprayer 100 was held upright and sprayed horizontally through the hood 1 and sprayed on a paper towel placed at a predetermined distance L for a predetermined time. Immediately thereafter, the sprayer was tilted 90 ° so that the open side of the hood was horizontal. At this time, the presence or absence of a drop from the hood 1 was examined. The results are shown in Table 1.

[0030] As shown in Table 1, in the case with the liquid reservoir 30 (with one adapter), there was no liquid drop other than spraying for 30 seconds at a distance of 0 (the hood was in contact with the barrel). On the other hand, in the case where the liquid reservoir 30 is not used (with no adapter), the liquid drop is not seen only when the spraying time is kept at 10 seconds and 15 seconds with the hood 30 mm away from the paper towel. In all the conditions, the droplets dropped. From this result, it is clear that the drop of the droplet was effectively prevented by the embodiment of the present invention.

[0031] The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the hood body can have various shapes such as a tubular shape in addition to the funnel shape shown in the above embodiment, and the cross-sectional shape perpendicular to the injection direction can be a circle, an ellipse, a square, etc. It can be. In addition to fitting, the liquid reservoir and the hood main body can have various coupling structures such as screwing or adhesion. Alternatively, it can be integrally formed during manufacture, and the folded wall can be folded when molded, or it can be folded over by bending force after it is formed on the extension of the hood body. In addition, the hood and cap can be formed as a single piece. In that case, the joint force between the hood and the cap corresponds to the attachment part of the hood to the sprayer. Further, the sprayer may be of various types such as an aerosol type, a type equipped with a hand pump unit, and a squeeze bottle type jetting with a gripping force.

[0032] [Table 1] Without an adapter With an adapter

Spraying time 0mm 10mm 30mm Omm 10mm 30mm

10 seconds X X ○ ○ ○ ○

15 seconds X X ○ ○ ○ ○

20 seconds X X X ○ ○ ○

30 seconds X X X X ○ ○

○: No liquid dripping X: Liquid dripping

FIG. 1 is a longitudinal sectional view showing a state in which a sprayer hood according to an embodiment of the present invention is attached to an aerosol sprayer.

FIG. 2 is a longitudinal sectional view showing the state shown in FIG. 1 with the sprayer hood removed from the sprayer.

FIG. 3 shows the hood shown in FIG. 1, where (a) is a longitudinal sectional view and (b) is a side view.

[Fig. 4] The cap of the sprayer shown in Fig. 1 is shown, (a) is a front view, (b) is a longitudinal sectional view, (c

) Is a rear view, and (d) is a bottom view.

FIG. 5 shows a liquid reservoir of the hood shown in FIG. 1, (a) is a longitudinal sectional view, and (b) is an enlarged view of a part thereof.

6 is an enlarged sectional view showing a fitting structure between the hood main body and the liquid reservoir in the hood shown in FIG.

FIG. 7 is an enlarged cross-sectional view showing a fitting structure of a different form from FIG.

FIG. 8 is an explanatory diagram of an example using the sprayer shown in FIG. 1.

Explanation of symbols

[0034] 1 Sprayer Hood

10 Mounting part

20 Hood body

30 Liquid reservoir

31 Fitting wall (fitting part) Back wall (fitting part) Tip wall (fitting part) Annular groove Folding wall

Nebulizer Container body Operation button a Spray port

Claims

The scope of the claims

[1] A hood for a sprayer that is attached to a position facing the spraying port of the sprayer to limit a sprayed region of the sprayed object, and the scattering region is defined based on a mounting part to the sprayer and a position facing the spraying port. A hood main body extending so as to demarcate, and a liquid reservoir provided on a front end side of the hood main body, the liquid reservoir being bent inward from a front end side portion of the hood main body, A sprayer hood comprising a folded wall extending toward the base end side of the hood main body with respect to a plane connecting the portions, and forming an annular groove extending in a direction along the front edge of the hood main body.

[2] The liquid reservoir is composed of a ring-shaped member that is separate from the hood main body, and includes a fitting portion for a tip side portion of the hood main body, and is coupled to the hood main body by fitting. The sprayer hood according to claim 1, wherein the folded wall is supported by the fitting portion.

[3] A sprayer, wherein the sprayer hood according to claim 1 or 2 is attached by the mounting portion in order to limit a sprayed region of the sprayed material from the spraying port.