JP2006111270A - Aerosol spraying apparatus and aerosol spraying instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol spraying apparatus which does not need to fit a gas vent jig to a container in advance, handling is simplified when it is used, there exists no possibility of bringing about cost up caused by increasing the number of parts, there exists no trouble of preparing tools in advance, it is unnecessary to continuously push a stem, and gas vent can be simply done when it is abandoned. <P>SOLUTION: The stem 20, which is pushed when it is used to put a content in the container into the inside from a through-hole 22a and to spray it to the outside through an inner delivering path 23a, is provided in the aerosol spraying apparatus 12 fitted on an opening part of the container. The stem demarcates a lightening section 30 of a hole with for example a non-through and circular arc-shaped crosssection ranging from the lower end face to a neck part 22 position in the longitudinal direction of the stem. In addition, a breakable position A which breaks and fractures when a force in the intersecting direction at right angles to the lengthwise direction of the stem is applied on the apex of the stem to communicate with the inside of the container and the outside, is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an aerosol injection device that is attached to a mouth portion of a container, pushes down a stem when in use, and injects the contents of the container to the outside with the pressure of a propellant through the stem. In addition, the present invention relates to an aerosol sprayer for insecticidal, medicinal, cosmetic, cleaning, painting, etc., in which such an aerosol spray device is attached to the mouth of a container.

  Conventionally, in an aerosol injector, an aerosol injection device is attached to the mouth of a container such as a spray can, the contents are stored together with the propellant in the container, the injection button attached to the stem of the aerosol injection device is pushed down, or a trigger lever is The stem was rotated to push in, the stem rubber was deformed to open the through hole of the stem, and the contents of the container were jetted from the through hole to the outside through the discharge passage in the stem by the pressure of the propellant.

  By the way, this type of injector is usually filled with a flammable gas as a propellant, so when throwing away, if it is discarded as it is, the container will explode during waste disposal, and the cleaning operator may be injured, The incinerator may be damaged. For this reason, when discarding, it has been practiced to make a hole in the container in advance or continue to push the stem to release the gas in the container.

  However, in order to make a hole in the container, it is troublesome to prepare a tool such as a nail, a threader and a hammer, or a commercially available dedicated tool. On the other hand, in order to keep pushing down the stem, it has been troublesome to put the finger on the stem for a long time and keep pushing, and to exhaust the gas in the container completely, the finger must be prepared for fatigue.

  In view of such a point, in the conventional aerosol injector, for example, as shown in FIG. 7, the inlet peripheral edge 3 a of the bowl-shaped gas venting jig 3 is fitted to the winding portion 2 on the outer periphery of the bottom of the container 1. Some have a degassing jig 3 detachably. At the time of disposal, the cap 5 is removed from the aerosol injection device 4 attached to the mouth of the container 1, and the degassing jig 3 is removed from the container 1 and placed on the container 1 as shown in FIG. The jig 3 is pushed down and the stem 6 is pushed in by the stop plate 9, and the rib 8 of the gas venting jig 3 is hooked on the winding portion 7 around the stem 6 of the container 1 and held in the pushed state. The propellant in the container 1 was completely removed.

JP 2000-177786 A

  However, in such an aerosol injector, since the degassing jig 3 is attached to the container 1, the entire size becomes large, which may be inconvenient for storage and use, or the degassing jig 3 may come off during normal use. In other words, there was a problem that handling during use was troublesome. Further, since the gas venting jig 3 having a complicated shape having the inlet peripheral edge 3a, the rib 8, the stop plate 9, and the like must be provided, there is a problem that the cost is increased.

  Therefore, the object of the present invention is to eliminate such problems, and it is not necessary to attach a degassing jig to the container in advance, simplifying handling during use, and increasing the number of parts without incurring high costs. Also, there is no need to prepare a tool in advance, and it is not necessary to keep pushing the stem, and it is possible to easily vent the gas at the time of disposal.

  For this reason, the invention described in claims 1 to 4 is attached to a container such as a so-called spray can, and when in use, the stem is pushed in through the spray button or the trigger lever is turned down to push the stem through the stem. In an aerosol injection device that injects the contents of a container to the outside, a cut-off position is provided in a stem by forming a lightening portion that reduces a cross-sectional area thereof. At the breaking position, when a force in a direction perpendicular to the length direction of the stem is applied to the tip of the stem, it breaks and breaks, and the inside of the container communicates with the outside.

  The breaking position is provided, for example, in a neck portion where a stem rubber is attached around a through-hole penetrating the stem in the radial direction from the outer peripheral surface of the stem to the central discharge passage. The lightening portion is formed, for example, in the length direction of the stem, communicates with the inside of the container, and is a hole with a circular cross section centered on the discharge passage.

  And when discarding, after removing the injection button attached to the stem or removing the trigger lever, a finger is applied to the tip of the stem and a force in a direction perpendicular to the length direction of the stem is applied. Then, the stem is broken at the breaking position and broken, and the inside of the container communicates with the outside. If the lightening part is formed in the length direction of the stem, the inside of the container can be communicated with the outside through the lightening part after breaking.

  A fifth aspect of the present invention is an aerosol injector, comprising the aerosol injection device according to any one of the first to fourth aspects.

  According to the invention described in claims 1 to 4, since it is only necessary to form a lightening portion that reduces the cross-sectional area of the stem, it is not necessary to attach a degassing jig in advance to the aerosol injector, It is easy to handle during use, and there is no worry of increasing the number of parts and incurring high costs. Moreover, when disposing of the gas, it is only necessary to fold and break the stem at the breaking position and communicate with the outside of the container, so there is no need to prepare a separate tool or keep pushing the stem. It can be easily removed.

  According to the invention described in claim 2, since the breakage position is provided in the neck portion where the stem rubber is attached around the through hole penetrating the stem in the radial direction from the outer peripheral surface of the stem to the central discharge passage, By providing a lightening portion in a portion having a small cross-sectional area, the force applied to the tip of the stem in the direction orthogonal to the length direction of the stem can be reduced, and the stem can be easily broken at the breaking position.

  According to the invention described in claim 3, since the lightening portion is formed in the length direction of the stem, after breaking, the inside of the container is communicated with the outside through the lightening portion, and the gas in the container is passed through the lightening portion. Can be pulled out quickly.

  According to the fourth aspect of the present invention, since the thinned portion is a circular arc-shaped hole having a cross section centered on the discharge passage, the stem cross-sectional area is further reduced as compared with the circular hole, and the stem is broken at the breaking position. Can be made easy.

  According to the fifth aspect of the present invention, since the aerosol injector includes the aerosol injection device according to any one of the first to fourth aspects, handling at the time of use becomes troublesome and the cost is increased. Without inviting, it is possible to easily vent the gas at the time of disposal without preparing a tool or continuing to push the stem.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 shows an aerosol injector according to the invention as viewed from the front.

  In the illustrated aerosol injector, a metal spray can such as aluminum or steel is used as a container 10, and an aerosol injection device 12 is attached to the mouth of the container 10. And the contents, such as an insecticide, a chemical | medical solution, a cosmetic liquid, a detergent, a washing | cleaning liquid, and a paint, are accommodated in the container 10 with a propellant. The contents may be dissolved in the gas as the propellant, or may be present in the container 10 in a state separated from the gas.

  FIG. 2 shows a longitudinal section of the aerosol injection device 12. As shown in FIG. 2, the aerosol injection device 12 includes a vertical cylindrical housing 14 having a step portion 13 in the middle. The housing 14 is provided with a large-diameter portion 15 on the step portion 13 and a small-diameter portion 16 below, and the inside of the large-diameter portion 15 communicates with the inside of the small-diameter portion 16.

  The small diameter portion 16 is press-fitted into the upper end portion of the pipe 17 and the pipe 17 is attached. The pipe 17 extends toward the bottom of the container 10 when the aerosol injection device 12 is attached to the mouth of the container 10. Then, the content is pushed up by the pressure of the propellant, and is put into the large diameter portion 15 from the small diameter portion 16 through the pipe 17.

  The large-diameter portion 15 has a plurality of vertical grooves 15 a on the inner peripheral surface, and is provided on the step portion 13 to provide a coil spring 18. Then, the stem 20 is placed on the coil spring 18. The stem 20 is provided with a head portion 21 at the lower portion, a neck portion 22 on the head portion 21, and a button attachment portion 23 at the upper end portion.

  The neck portion 22 is provided with a through hole 22a that penetrates in the radial direction from the outer peripheral surface to the center. The button attachment portion 23 has a discharge passage 23a in the center and communicates with the through hole 22a.

  Then, an annular plate-like stem rubber 24 that is an elastic member is attached to the neck portion 22, and the head portion 21 is placed in the large diameter portion 15 and placed on the coil spring 18. Thereby, together with the vertical groove 15a, the content discharge passage 25 is formed by the gap between the inner peripheral surface of the large diameter portion 15 and the outer peripheral surface of the head portion 21, and the stem 20 is stored in the housing 14 so as to be freely inserted and removed. The stem rubber 24 is fitted onto the large diameter portion 15.

  Thereafter, the stem 20 is passed through the center hole 26a of the mountain cap 26, the stem rubber 24 is compressed, and the mountain cap 26 is attached to the upper portion of the housing 14. The mountain cap 26 is formed with a tightening portion 26b that is curved in an inverted U shape on the outer peripheral edge, and the tightening portion 26b is crimped to the peripheral edge of the mouth of the container 10 via the gasket rubber 27 and tightened. The aerosol injection device 12 is attached to the mouth of the container 10 by projecting 20 upward.

  And the injection button 28 is attached to the button attachment part 23 of the stem 20, as shown in FIG. Although not shown in the drawings, the injection button 28 is provided with a nozzle member having an outlet.

  When using this injector, in the state shown in FIG. 1, the container 10 is held, a finger is put on the injection button 28, the injection button 28 is pushed down in the direction of the arrow, the stem 20 is pushed in, and the stem rubber 24 Is elastically deformed to open the through hole 22a. Then, the contents of the container 10 are pushed up by the gas pressure of the propellant and are put into the large diameter portion 15 from the small diameter portion 16 through the pipe 17.

  Next, the liquid is guided from the through hole 22a to the discharge passage 23a of the stem 20 through the content discharge passage 25, and is put into the flow path in the injection button 28 through the discharge passage 23a, and is injected outward from the outlet of the nozzle member.

  When stopping use, release the injection button 28 to release the push of the stem 20, push up the stem 20 with the coil spring 18 to return the deformation of the stem rubber 24, close the through hole 22 a, and eject the nozzle member Stop the injection from.

  FIG. 3 shows a longitudinal section of the stem 20. FIG. 4 shows a cross section of the neck portion 22 of the stem 20.

  As can be seen from the figure, the stem 20 is provided with a non-penetrating hole in the length direction of the stem 20 from the lower end surface to the position of the neck portion 22 as shown in FIG. As shown in FIG. 4, the lightening portion 30 in the illustrated example is an arc-shaped hole having a cross section centered on the discharge passage 23 a. By this thinned portion 30, the cross-sectional area of the stem 20 is reduced, and the fracture position A is provided in the neck portion 22.

  Then, when the contents in the container 10 are used up and discarded, the injection button 28 may remain attached, but the injection button 28 is removed from the stem 20 so as to make the operation easier, and as shown in FIG. When a thumb is placed next to the tip of the stem 20 and a force in a direction perpendicular to the length direction of the stem 20 is applied to the tip of the stem 20, the stem 20 is broken at the breaking position A and the state shown in FIG. Thus, the inside of the container 10 can be communicated with the outside through the lightening part 30, and the gas in the container 10 can be quickly extracted in the direction of the arrow through the lightening part 30.

  Thereby, it is not necessary to attach a degassing jig in advance to the aerosol injector simply by forming the thinned portion 30 for reducing the cross-sectional area of the stem 20, and it is easy to handle at the time of use. There is no need to worry about increasing costs. Moreover, when discarding, the stem 20 need only be broken at the breaking position A, and the inside of the container 10 only needs to communicate with the outside, so there is no need to prepare a separate tool or keep pushing the stem. It is possible to easily vent the time.

  Further, according to the illustrated example, the breaking position A is formed on the neck portion 22 where the stem rubber 24 is attached around the through hole 22a that penetrates the stem 20 in the radial direction from the outer peripheral surface of the stem 20 to the central discharge passage 23a. Therefore, by providing the thinned portion 30 in the portion having a small cross-sectional area, the force applied to the tip of the stem 20 in the direction perpendicular to the length direction of the stem 20 is reduced, and the stem 10 at the breaking position A is reduced. Breaking can be facilitated.

  In the above-described example, the thinned portion 30 is formed as one cross-sectional arc-shaped hole. However, the number is not limited to one, and a plurality of holes may be provided. It may be a hole or a polygonal hole. In addition, the breaking position is provided in the neck portion having the through hole, but it is not limited to the neck portion having the through hole, and may be provided in another portion.

  Furthermore, in the above-described example, the stem 20 is pushed down through the injection button 28, but it is of course applicable to an aerosol injector in which the stem is pushed down using a trigger lever or the like.

It is a front view of the aerosol injector by this invention. It is a longitudinal cross-sectional view of the aerosol injection apparatus with which the aerosol injector is equipped. It is a longitudinal cross-sectional view of the stem provided in the aerosol injection apparatus. It is a horizontal longitudinal cross-sectional view in the fracture | rupture position of the stem. It is explanatory drawing of the state which folds the stem in a fracture | rupture position at the time of discard. It is a longitudinal cross-sectional view of the stem of the part which remained after the fracture | rupture. It is a front view of the conventional aerosol injector. It is the elements on larger scale which show the degassing state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container 12 Aerosol injection apparatus 20 Stem 22 Stem neck part 22a Stem through-hole 23a Stem discharge passage 24 Stem rubber 30 Meat removal part A Breaking position

Claims (5)

In an aerosol injection device that attaches to a container, pushes the stem during use, and injects the contents of the container through the stem to the outside,
Formed in the stem is a thinned portion that reduces its cross-sectional area, breaks when the force in the direction perpendicular to the length direction of the stem is applied to the tip of the stem, and communicates the inside of the container with the outside An aerosol spraying device characterized by providing a break position.   The said fracture | rupture position is provided in the neck part which opens the through-hole which penetrates the said stem radially from the outer peripheral surface of the said stem to a center discharge passage, and attaches a stem rubber around it. Aerosol spray device.   The aerosol injection apparatus according to claim 1, wherein the lightening portion is formed in a length direction of the stem and communicates with the inside of the container.   The aerosol injection device according to any one of claims 1 to 3, wherein the lightening portion is a hole having a circular cross section centered on the discharge passage.   An aerosol injector comprising the aerosol injection device according to any one of claims 1 to 4.

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