JP4986514B2 - Sprayer hood and sprayer - Google Patents

Description

  The present invention relates to a hood for a sprayer that is attached to a position facing an injection port of a sprayer and restricts a spray region of the sprayed product, and a sprayer to which the hood is attached.

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

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

  This sprayer hood is used in such a manner that the sprayer is attached to the sprayer by the mounting end, and the open end is applied to or close to an object to perform a spraying operation. Thereby, the mist-like projectile is sprayed on the object in a concentrated manner in a region surrounded by the hood without being dissipated in a wide range.

  However, if the spray is over a long period of time, or if the propellant is in a high-density mist, the propellant adheres to the inner surface of the hood and forms droplets that fall from the hood when the droplets become large. As a result, it may adhere to the object and the surrounding area, or may cause problems such as dirt and discoloration.

In order to cope with this, a structure for holding droplets adhering to the inner surface of the sprayer hood on the hood has been proposed (for example, Patent Documents 2 and 3). The sprayer hood of Patent Document 2 is provided with a liquid reservoir groove in the portion 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), along the inner surface of the hood. The liquid droplets flowing down are collected in the liquid accumulation groove to prevent the liquid droplets from falling outside the hood. Further, the sprayer hood of Patent Document 3 is provided with a liquid absorbing member made of sponge or non-woven fabric on the entire periphery of the open end (tip opening) of the hood, and the liquid absorbing member absorbs the liquid droplet flowing down along the inner surface of the hood. Therefore, it is intended to prevent falling out of the hood.
JP 2004-34006 A JP 2005-239274 A JP 2005-270823 A

  However, the hood for a sprayer described in Patent Document 2 has a liquid collecting groove only on the lower side of the hood, and the liquid collecting groove is almost when the injection direction in a state where the hood is mounted is horizontal. It is provided so as to be recessed from the inner surface of the hood vertically downward (that is, in a direction substantially perpendicular to the center line from the attachment end to the open end of the hood). Therefore, when the open end of the hood is tilted downward, particularly when the hood is tilted until the surface of the open end is horizontal or close to the surface, the liquid in the liquid pool groove spills out. .

  Further, the sprayer hood of Patent Document 3 is provided with a liquid absorbing member at the open end of the hood. Therefore, when spraying with the open end applied to an object, the hood is placed with the open end facing downward. In some cases, the absorbed liquid adheres to the object or the installation surface.

  The present invention solves these problems of the prior art, reliably prevents liquid droplets from dropping from the hood, and prevents the liquid from adhering to the hood when the hood contacts an object or installation surface. It aims at providing the sprayer which attached the hood.

  In order to achieve the above object, the present invention is a hood for a sprayer that is attached to a position facing a spray port of a sprayer and restricts a sprayed area of the spray, and includes a mounting portion to the sprayer and a position facing the spray port. A hood main body extending as a base end so as to define the scattering region, and a liquid reservoir provided on the distal end side of the hood main body, the liquid reservoir bent inward from the distal end side portion of the hood main body. A sprayer comprising a folded wall extending toward the base end side of the hood main body with respect to a plane connecting the front end portions of the hood main body, and forming an annular groove extending in a direction along the front edge of the hood main body. A food hood is provided (Invention 1).

  In order to achieve the above object, the present invention also provides a sprayer characterized in that the sprayer hood according to the first aspect of the present invention is attached by the mounting portion in order to limit a sprayed area of the sprayed material from the spraying port. (Invention 2).

  The “spraying region of the sprayed object” includes a region (injection region) directly injected from the injection port and a region (diffusion region) in which the injected object is diffused by being affected by the object or airflow.

  In addition, the “annular groove extending in the direction along the front edge of the hood main body” means that the annular groove extends in the direction along the front edge of the hood main body as a whole. Includes a circular ring-shaped groove along the bent shape, a circular ring-shaped groove along the line connecting the peaks of the bent shape and the center line, and a circular groove close to these.

  In the hood for a sprayer according to the present invention, a hood main body extending so as to define a scattering region with a position facing the injection port as a base end includes a liquid reservoir portion at a distal end side portion of the hood main body, and the liquid reservoir portion is And a folding wall that is bent 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.

  Accordingly, 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. Also, when the open end of the hood is tilted downward with the liquid 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 reliably prevented from spilling from the annular groove. Further, 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 object and the installation surface as in the case of being 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 scattering region of the sprayed material from the spraying port. Therefore, taking advantage of the sprayer hood, It is possible to effectively prevent the droplets adhering to the droplets from dropping.

  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.

 FIG. 1 is a longitudinal sectional view showing a state where a sprayer hood according to an embodiment of the present invention is mounted on an aerosol sprayer, and FIG. 2 is a longitudinal sectional view showing a state where the sprayer hood is detached from the sprayer. . In the sprayer 100, an operation button 102 is attached to an upper portion of a container main body 101 containing a chemical solution. When the button 102 is depressed, a valve opens to make the chemical solution mist by the internal pressure of the container. 102a is injected. Regarding this embodiment, for the sake of explanation, the injection direction from the sprayer 100 will be referred to as the front.

  In the container body 101, the upper portion of the bottomed cylindrical trunk 103 is closed with a substantially hemispherical cover 104 and a mountain cup 105 at the center thereof. The upper part of the trunk 103 and the cover 104, and the cover 104 and the mountain cup 105 are closed. Are coupled to each other by winding portions 103a and 104a. Further, a cap 106 is fitted on the upper portion of the container main body 101 so as to be fitted to the winding fastening portion 103 a and surround the button 102. 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 106c opened upward is formed. Further, a coupling portion 110 for coupling a sprayer hood described below is provided on the opening 106b side.

  FIG. 3 shows a sprayer hood 1, (a) is a horizontal cross-sectional view, corresponding to a cross section taken along line AA in (b), and (b) viewed from the direction of arrow B in (a). FIG. As shown in the figure, the sprayer hood 1 includes an attachment 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 on the front end side of the hood main body. In this embodiment, the hood main 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 pair of leg portions extending in parallel with each other across the small tube portion 11 from a position near the base end portion on the side wall of the hood main body 20. 12.

  4A and 4B show the cap 106, where FIG. 4A is a front view, FIG. 4B is a longitudinal sectional view, FIG. 4C is a rear view, and FIG. 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 part 106 b to fit closely with the small cylinder 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 protrusions 12a protruding outward in the radial direction at their tips, and locking grooves 112a for receiving the locking protrusions 12a are formed on the side walls of the recesses 112. At the lower end of the cap 106, a protrusion 106d that is locked when fitted to the winding fastening portion 103a and holds the fitting state of the cap 106 is provided at an interval.

  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 longitudinal section in FIGS. For the fitting, the hood main body 20 has a receiving portion for the ring 30 a 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. Further, an inner cylinder portion 24 is integrally formed on the radially inner side of the outer cylinder portion 22 with a space from the outer cylinder portion 22.

  And the ring 30a has a fitting part corresponding to a receiving part. That is, as shown in an enlarged view in FIG. 5B and FIG. 6, the ring 30 a 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 from the inner portion of the tip wall 33 in the same direction as the fitting wall 31. The rear wall 32 is a distance from the fitting wall 31 so as to form a space for storing a liquid between the rear wall 32 and the inner cylinder portion 24 in a state where the fitting wall 31 is inserted into the distal end portion 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. Yes. The fitting wall 31 is tightly inserted between the outer cylinder part 22 and the inner cylinder part 24 of the hood body 20, and the inner cylinder part 24 is tightly inserted between the fitting wall 31 and the rising part 32a. It is the dimension to be. Further, a minute protrusion 31a is provided on the outer surface so as to ensure the holding in the inserted state.

  Therefore, when the ring 30 a is inserted into the front end portion of the hood main body 20 and united, the front end wall 33 bends and extends from the front end edge of the hood main body 20 to the inside of the hood main body, and the rear wall 32 extends to the front end of the hood main body 21. It extends to the base end side of the hood main body 20 so as to form an angle of 90 ° with respect to the plane P (FIG. 6) connecting the parts, and is positioned parallel to the central axis CL of the hood main body 20. The tip wall 33 and the rear wall 32 form a folded wall 35, and the folded wall constitutes the liquid reservoir 30. And since the folding | turning wall 35 is continuously extended cyclically | annularly along the hood main body front end edge, the annular groove 34 along the hood main body front end edge is formed between the inner cylinder parts 24. As shown in FIG.

  This 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 main 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 contents in the container main body may be ejected by placing or approaching the object and pressing the button 102. When spraying is carried out over a long period of time or the sprayed material is in a high-density mist form, the sprayed material may adhere to the inner surface of the hood to form droplets, and the droplets may be large. However, the liquid droplets moved along the inner surface of the hood are collected 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 obtained over the entire circumference centering on the injection direction from the injection port 102a. It is done. Moreover, the folding wall 35 of the liquid reservoir 30 is bent to the inside of the hood body, and the rear wall 32 forms an angle of 90 ° with respect to the plane connecting the tip portions of the hood body 20. Since the open end of the hood 1 is inclined downwards, particularly when the hood is inclined until the open end surface is horizontal or close to this, the liquid in the liquid reservoir 30 spills down. There is nothing to do.

  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 tip portions of the hood main body. In this way, it is only necessary that at least the distance d1 between the plane P and the most proximal portion be folded back so as 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 main body, and may be provided on the hood main body so as to be positioned on the tip side of the droplet generation range. Further, 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 thereof, and a bowl shape. Thereby, even when the hood is inclined until the surface of the open end is horizontal or close to the surface, the droplet is 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 ejected matter and to prevent unnecessary diffusion. Therefore, most of the ejected matter is directed to the object, and the amount of the droplet generated by the ejection is not so large, so that the droplet is 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.

  If the propellant is volatile, the liquid accumulated in the liquid reservoir 30 vaporizes with time and disappears. When the propellant is non-volatile, the accumulated liquid is appropriately cleaned and removed. In this case, when 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.

  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 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. When the liquid in the portion 30 or the liquid droplet on the front end side of the hood main body 20 flows to the hood base end side, the liquid is received. Therefore, even if the hood 1 is inclined so that the open end faces upward, the liquid flowing toward the base end side is received by the backflow prevention groove 26, flows back to the cap 106 and the button 102, and leaks out from there. 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 (attachment wall 26a) with respect to a plane connecting the front end of the hood main body 20. desirable. Thereby, 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. , Back flow to the hood base end side is reliably prevented.

  Below, the Example using the hood which concerns on the said embodiment, and the sprayer equipped with this hood is described. FIG. 8 schematically shows an experiment using a sprayer 100 equipped with the hood 1 according to the above embodiment and, as a comparative example, a sprayer equipped with a hood 1 from which the liquid reservoir 30 (adapter) is removed as a hood. Show. As the contents of the aerosol sprayer, a deodorizing composition comprising ethanol (25% by weight), a surfactant-based deodorant (5% by weight) and liquefied propane gas (70% by weight) was used. The sprayer 100 was held vertically and sprayed in the horizontal direction 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 surface of the hood was horizontal. And the presence or absence of the fall of a droplet from the hood 1 at this time was investigated. The results are shown in Table 1.

  As shown in Table 1, with the liquid reservoir 30 (with an adapter), there was no drop of liquid droplets other than spraying for 30 seconds at a distance of 0 (the hood was in contact with the towel). On the other hand, in the case where there is no liquid reservoir 30 (no adapter), the drop does not fall off only when the spraying time is kept at 10 seconds and 15 seconds with the hood 30 mm away from the paper towel. Then all 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.

  The present invention is not limited to the above embodiment, and various modifications can be made. 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. Can do. Further, the liquid reservoir and the hood main body can have various coupling structures such as screwing or adhesion, in addition to fitting. Alternatively, it may be integrally formed at the time of manufacture, and the folded wall may have a folded shape at the time of molding, or may be folded by being bent after being formed on the extension of the hood body. Furthermore, the hood and the cap may be formed integrally instead of separately. In that case, the joint part of a hood and a cap is equivalent to the attachment part to the sprayer in a hood. Further, the sprayer can 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.

It is a longitudinal cross-sectional view which shows the state which mounted | wore the aerosol type sprayer with the hood for sprayers which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the state which removed the hood for sprayers from the sprayer about what was shown in FIG. The hood shown in Drawing 1 is shown, (a) is a longitudinal section and (b) is a side view. 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. 2 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. It is an expanded sectional view which shows the fitting structure of the hood main body and the liquid reservoir part in the hood shown in FIG. It is an expanded sectional view which shows the fitting structure of a form different from FIG. It is explanatory drawing of the Example using the sprayer shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sprayer hood 10 Attachment part 20 Hood main body 30 Liquid reservoir part 31 Fitting wall (fitting part)
32 Rear wall (fitting part)
33 Tip wall (fitting part)
34 Annular groove 35 Folding wall 100 Sprayer 101 Container body 102 Operation button 102a Injection port

Claims (3)

A sprayer hood that is attached to a position facing the spraying port of the sprayer and restricts a spray region of the sprayed object,
An attachment to the sprayer;
A hood main body extending so as to define the scattering region with a position facing the injection port as a base end;
A ring-shaped member that is detachably attached to the tip side portion of the hood body,
The ring-shaped member extends from the distal end side to the proximal end side of the hood main body in a state in which the fitting portion is fitted to the distal end side of the hood main body and the fitting portion is fitted to the hood main body. A formed folding wall,
An annular groove extending in a direction along the leading edge of the hood body is formed by the folded wall and the hood body . The hood body, nebulizer hood according to claim 1, characterized in Rukoto includes a backflow prevention groove on the base end side.   3. A sprayer, wherein the sprayer hood according to claim 1 or 2 is attached by the mounting portion in order to limit a spray region of the sprayed material from the spray port.

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