JP5419562B2 - Spray nozzle - Google Patents

Description

  The present invention relates to a spray nozzle suitable for spraying nasal drops and the like, and when a content filled in a container is supplied, a turning force is surely applied to the content (spin is applied). ) To achieve stable spraying.

  Drugs such as nasal sprays are usually sprayed in the form of a mist in order to alleviate discomfort caused by direct stimulation by the drug, and conventionally it passes through the internal passage of the nozzle body part. A turning force (spin) is applied to the contents to realize the content (for example, see Patent Document 1).

  By the way, this type of conventional spray nozzle is provided with a swirl flow forming wall in either one of the internal passage or the element of the nozzle body portion, and in the internal space formed when the nozzle body portion and the element are combined. When spraying the contents by letting the contents flow out at a predetermined angle on the wall, it was sprayed and inconvenient for the combination of the nozzle body part and the element (the assembly was bad and the interior must be formed originally) There was an extra space in the space, etc.), and the contents could not be spun, so there was still room for improvement in this regard.

JP 2008-132406 A

  The subject of this invention exists in the place which proposes the novel spray nozzle which can provide a turning force reliably with respect to the content, and can spray stably in a mist form.

The present invention relates to a tapered nozzle body portion having a tapered external shape, and an element that is arranged inside the nozzle body portion and applies a turning force to the contents so as to be ejected in a mist form from the tip of the nozzle body portion. A spray nozzle comprising:
The element consists of a cylindrical body that fits into the through-opening of the nozzle main part, and a top wall that closes the tip of the cylindrical body and forms a feeding path for contents inside the cylindrical body,
The cylindrical body is provided with an opening communicating with the inside and outside, and a fine gap is formed between the outer wall surface of the region including the opening and the inner wall surface of the nozzle body part,
At the edge of the top wall of the cylindrical body, the outer peripheral wall portion at the tip thereof is sealed by contacting the inner peripheral wall portion of the nozzle main body portion, and on the inner side by cooperation with the inner ceiling wall portion of the nozzle main body portion. A peripheral wall forming an exit side space region is provided, and the exit side space region and the fine gap are communicated with each other between the tip portion and the top wall of the peripheral wall, and pass through the opening and the fine gap. The spray nozzle is characterized in that a lateral opening is formed in which the contents are guided and flown in a direction along the inner wall surface of the peripheral wall to generate a swirling flow.

  The peripheral wall is particularly preferably one having a circular or elliptical planar shape from the viewpoint of imparting a swirling flow to the contents. Moreover, although the said opening, a fine clearance gap, and a horizontal opening can each be provided in the opposing position of a cylinder, you may provide two or more along the circumference of a cylinder.

Further, an annular groove provided on the inner side of the nozzle body portion (inner ceiling wall), the distal end portion of the peripheral wall of the element, it is desirable to fit the annular groove of the nozzle body.

  A peripheral wall is provided on the top wall of the cylindrical body constituting the element, and the contents are guided to the inner wall surface of the peripheral wall through a lateral opening formed in the peripheral wall, and the contents are caused to flow along the inner wall surface, thereby turning the contents. Therefore, even if a space larger than a predetermined volume may be formed due to a problem in assembling of the constituent members, it is possible to always apply a predetermined turning force to the contents. Can be stably sprayed.

  By providing a structure in which the distal end portion of the peripheral wall is fitted in an annular groove formed inside the nozzle body portion, the sealing performance is improved, and it is possible to clearly grasp whether or not both members are securely connected.

It is the figure which showed embodiment of the spray nozzle according to this invention. It is the figure which showed the plane of the element of the spray nozzle shown in FIG. 1, (a) is an enlarged view of the principal part, (b) is the figure which showed the AA cross section of (a). It is the figure which expanded and showed the principal part of the spray nozzle shown in FIG. (A) and (b) are the figures which expanded and showed the principal part of the conventional spray nozzle. It is the figure which expanded and showed the principal part of the spray nozzle shown in FIG.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a cross-sectional view showing an embodiment of a spray nozzle according to the present invention. FIGS. 2A and 2B are an enlarged view of a main part of the spray nozzle shown in FIG. FIG. 3 is an external perspective view of the main part of the element.

  In the figure, reference numeral 1 denotes a tapered nozzle body portion having a tapered appearance. The nozzle body portion 1 is provided with a through opening 1a, and a nozzle hole 1b for spraying the contents in the container is formed at the tip thereof.

  2 is an element. The element 2 includes a cylindrical body 2a that fits into the through-opening 1a of the nozzle body portion 1, and a ceiling wall 2b that closes the tip of the cylindrical body 2a and forms a content supply path m inside the cylindrical body 2a. It is configured.

Reference numeral 3 denotes a lateral opening formed in the cylindrical body 2 a that forms a passage connecting inside and outside of the cylindrical body 2 a, and 4 denotes a recess provided in an area including the opening 3 along the axis О of the nozzle body portion 1. It is a place. The recess 4, when the element 2 is fitted into the through opening 1a of the nozzle body portion 1 to form a micro fine gap 4a between the other.

  Reference numeral 5 denotes a peripheral wall that stands at the edge of the top wall 2 b of the element 2. The peripheral wall 5 has a circular shape as shown in a plan view in FIG. 2 (b), and an exit side space region (forms a swirl flow) between the inner wall of the nozzle body portion 1 and the top wall 2b. Region) 5a is formed. The outer peripheral surface of the peripheral wall 5 is firmly fitted (fitted in the radial direction) with the inner wall of the nozzle main body portion 1, and the space between them is kept in a liquid-tight state.

Furthermore, 6 and 7, respectively provided on opposite positions of the peripheral wall 5 (facing position of the long axis side L _1), the contents passing through the opening 3 and the fine gap 4a, along the inner wall surface of the peripheral wall 5 It is a lateral opening that guides and flows out. The lateral openings 6 and 7 have an opening center that is decentered by e ₁ and e ₂ from the axis O of the nozzle body portion 1 (see FIG. 2B), and through the lateral openings 6 and 7. A swirling force is applied to the contents by causing the contents to flow into the exit space region 5a.

Reference numeral 8 denotes an operating collar provided integrally with the lower portion of the nozzle body portion 1, and 9 denotes a base cap that holds the spray nozzle and is attached to the mouth of the container. The base cap 9 incorporates a pump 10 for sucking, pressurizing and compressing the contents in the container, and the lower end portion of the element 2 of the spray nozzle is the upper end opening of the hollow stem 10 a constituting the pump 10. and connected to, in its entirety, it is elastically supported at the top of the base cap 9 via a spring 10b _1.

Applying a finger to the operating collar 8 provided at the lower part of the nozzle body 1 and pushing the spray nozzle against the urging force of the springs 10b ₁ , 10b ₂ (pressurization, compression, spraying of contents), By repeatedly performing the action of releasing the force applied during the pushing (suction of the contents), the piston 10d disposed in the cylinder 10c moves up and down in the interior, and the contents in the container are sucked. While being sucked into the cylinder 10c through the tube 10e, it is pressurized and compressed.

Pressurization of the contents, when the cylinder 10c reaches a predetermined pressure during compression, rod 10f which is elastically supported by a spring 10b ₂ is contacted with away from the piston 10d immediately (valve with rod 10f and the piston 10d body is configured to open and close the valve body at a desired pressure.), and this by such a compression contents, hollow stem 10a, feeding path m, the opening 3, the fine fine gap 4a, sideways opening 6, 7 and the exit space region 5a, the nozzle body 1 is discharged from the nozzle hole 1b to the outside.

In the conventional spray nozzle, for example, in the case where the top wall 2b of the element 2 is provided with the swirling flow forming wall 11, as shown in FIG. In the case where the formation region is formed, but the elements are not sufficiently assembled and a gap t is formed between them as shown in FIG. 4B, the contents passing through the gap t However, the spray nozzle according to the present invention may not be able to give sufficient swirling force to the contents. Since the content is guided along the wall surface and a turning force is applied to the contents, there is a slight variation in the dimension along the axial direction of the exit space region 5a as shown in FIG. Even if there is, it may affect the turning of the contents. Rather, all contents are stably spray atomized.

As for the peripheral wall 5, the tip portion is abutted against the inner ceiling wall portion of the nozzle main body portion 1, and the outer peripheral wall portion is brought into contact with the inner peripheral wall portion of the nozzle main body portion 1 for sealing. A groove portion (annular groove) may be formed in advance in the internal ceiling wall portion of the portion 1, and the distal end portion of the peripheral wall 5 may be fitted to the groove portion formed in the internal ceiling wall portion of the nozzle body portion 1. The point is not limited.

  In addition, as for the pump 10 used for suction, pressurization, and compression of the contents, an accumulator pump having two types of springs with different urging forces has been shown as an example, but the pump structure also depends on the use and type of contents. Various modifications can be made and the present invention is not limited to the illustrated one.

  The peripheral wall 5 is preferably shaped so that its inner wall is an ellipse. When the contents enter the exit space area 5a, the inner wall collides with the inner wall and turns along the inner wall, which is effective for increasing the turning force. Become.

  It is possible to provide a spray nozzle that can surely apply a turning force to the contents to be ejected in the form of a mist.

1 the nozzle body portion 1a through the opening 1b nozzle hole 2 elements 2a cylinder 2b top wall 3 opening 4 recesses 4a fine fine gap 5 peripheral wall 5a exit-side space region 6 laterally opening 7 horizontally opening 8 flange portion 9 base cap 10 Pump 11 Swirling flow forming wall m Feeding path t Clearance

Claims (3)

A spray comprising a tapered nozzle body portion having a tapered external shape, and an element disposed inside the nozzle body portion, which imparts a turning force to the contents and causes the contents to be sprayed from the tip of the nozzle body portion. A nozzle,
The element consists of a cylindrical body that fits into the through-opening of the nozzle body part, and a top wall that closes the tip of the cylindrical body and forms a feeding path for the contents inside the cylindrical body,
The cylindrical body is provided with an opening communicating with the inside and outside, and a fine gap is formed between the outer wall surface of the region including the opening and the inner wall surface of the nozzle body part,
At the edge of the top wall of the cylindrical body, the outer peripheral wall portion at the tip thereof is sealed by contacting the inner peripheral wall portion of the nozzle main body portion, and on the inner side by cooperation with the inner ceiling wall portion of the nozzle main body portion. A peripheral wall forming an exit side space region is provided, and the exit side space region and the fine gap are communicated with each other between the tip portion and the top wall of the peripheral wall, and pass through the opening and the fine gap. A spray nozzle characterized in that a lateral opening is formed in which the contents are guided and flown in a direction along the inner wall surface of the peripheral wall to generate a swirling flow.   2. The spray nozzle according to claim 1, wherein a plurality of the openings, fine gaps, and lateral openings are provided at intervals along the periphery of the cylindrical body. The peripheral wall, the tip portion is configured to fit in an annular groove formed in the nozzle body portion, the spray nozzle according to claim 1 or 2.

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