JP4678685B2 - Aerosol liquid ejector - Google Patents

Description

  The present invention relates to an aerosol type liquid ejector.

  There has been proposed an aerosol container in which an ejection head is configured to be restrained at an ejection position by a shoulder cover attached to the aerosol container. (For example, see Patent Document 1)

  The aerosol container described in the above-mentioned Patent Document 1 has an injection button fitted on a spring-biased valve stem that protrudes from the head of a cylindrical aerosol container at the base end and is attached to the upper part of the aerosol container. The shoulder cover is configured to be restrained at the injection position.

More specifically, the shoulder cover includes an outer peripheral surface portion that covers the shoulder portion of the aerosol container, and an annular upper surface peripheral portion that is formed at the upper end of the aerosol container and that is centered on the valve stem. Further, claws are projected outward from at least two positions on both sides of the peripheral surface portion of the injection button with respect to the valve stem. Further, in the periphery of the upper surface, a guide groove formed in the vertical direction so as to guide the vertical movement of the nail responding to the pressing operation of the injection button, and the upper surface of the nail in the rotational direction centering on the valve stem In order to guide the sliding of the guide groove, the guide surface portion formed in an arc shape from the lower end of the side surface portion of the guide groove along the rotation direction and the claw moved up by the spring bias of the valve stem are constrained to the injection position. A claw restraining groove is formed which is formed continuously upward at the end of the guide surface portion in the rotation direction and has an abutting surface portion for abutting the claw on the upper end.
JP 2004-188373 A

  The conventional aerosol container can perform continuous injection for degassing, hand-off injection, or full injection only by rotating the injection button. Therefore, there is an advantage that the residual gas after the stored liquid is used up can be easily discharged. However, in order to achieve such actions and effects, this aerosol container must be provided with a complicated guide groove and claw restraining groove as described above, and has a complicated structure. Moreover, since the nail | claw must be formed also in an injection button, there also exists inconvenience that the existing injection button cannot be used.

  The present invention has been made in view of the above points, and can easily discharge the residual gas after using the stored liquid, has a simple structure, and can use an existing aerosol container or jet head. Therefore, we propose an aerosol-type liquid ejector that can be manufactured inexpensively and is easy to handle.

  The aerosol liquid ejector of the present invention includes an aerosol container, an ejection head, a shoulder cover, and a cap.

  The aerosol container has a known jetting mechanism configured such that the stem protrudes from the upper surface of the trunk portion so that it can be pushed upward and the built-in discharge valve is opened by pushing the stem and the stored liquid is jetted from the stem by gas pressure. The provided one is used. In addition, the upper surface of the shoulder portion, which is the periphery of the upper surface of the body portion, is formed in a tapered shape that is inclined downward, and an annular protrusion is provided at the upper edge portion thereof, and a downward step is provided at the lower peripheral portion of the annular protrusion. What formed the part is easy to engage or disengage the cover cap, and can be preferably used.

  The injection head is made of synthetic resin, etc., and the lower end of the injection port is fitted to the aerosol container stem so that it can be pushed down, the injection port is opened on the peripheral surface or upper surface, and the injection port is opened from the introduction port to the inside. It has a flow path to reach.

  The shoulder cover is formed of a synthetic resin or the like, covers the upper peripheral edge of the aerosol container and is detachably fitted, and is configured to project the ejection head so that it can be pushed down from the central window hole. In the conventional method, the decorativeness of the aerosol container is given, the safety is provided by covering the caulking portion etc. on the upper surface of the aerosol container, or the dust is prevented from adhering to the upper surface of the aerosol container having severe irregularities. In addition to the shoulder cover function in this type of aerosol jet, it can be used for degassing. In use, it also serves as a base for detachably fitting the cap.

  The cap covers the ejection head and is detachably fitted to the shoulder cover. It is attached for the purpose of preventing dust from adhering to the ejection head, in particular to preventing dust from adhering to the ejection port. Yes. Further, the present invention is configured so that it can be used when the remaining gas is vented.

  In the present invention, the removed shoulder cover can be remounted in a state where a cap is interposed between the ejection head and the ejecting head. In addition, it is possible to vent the gas by pushing down the ejection head through the cap at the time of remounting. Therefore, after removing from an aerosol container once, it is a form which can be fitted in the original state with respect to an aerosol container, maintaining the state which pushed down the injection head, for example via the cap attached to the injection head.

  When the shoulder cover is locked to the aerosol container, the engagement cover has such an engagement strength that it can be removed relatively easily and can maintain the pushed-down state of the cap and the ejection head against the upward biasing force of the stem. Stop. Specifically, it is possible to adopt a form such as a cross-engagement engagement between ridges, a cross-engagement engagement between ridges and protrusions, or a forced fitting between protrusions and recesses, and the above requirements are taken into account in consideration of these protrusion widths etc. Adjust to meet. Moreover, you may engage by screwing. More specifically, for example, it can appear by forcibly engaging an engaging protrusion or a plurality of engaging protrusions provided around the fitting cylinder of the shoulder cover with a downward stepped portion on the outer surface of the annular protrusion of the aerosol container. . By providing a vertical cut groove in the fitting cylinder, gas can be discharged more smoothly from the inside to the outside when degassing. When the longitudinal kerf is provided, it may be singular or plural, but it is appropriate to provide a plurality of grooves at regular intervals in the circumferential direction. The longitudinal grooves can be used for adjusting the engagement strength by adjusting the number, width, and the like. Even if there is no vertical kerf, the gas can be discharged to the outside. For example, a degassing hole and a groove may be provided in a part of the cap.

  Also, as a means to remove the set shoulder cover, for example, a clearance is provided at the lower end of the peripheral wall, and the tip of a tool such as a screwdriver, coin, or rod is inserted from there, and the peripheral wall of that part is lifted and engaged by the principle of lever Can be released and removed. Moreover, the method of giving the force of a cancellation | release direction to an engaging part by elastically deforming the top plate of a shoulder cover is also mentioned.

  As a first means, an aerosol container A that protrudes the stem 5 so as to be able to be pushed down in an upwardly biased state from the upper surface, and the lower end inlet 10 is fitted to the stem 5 so as to be able to be pushed down, and is attached to the side surface or upper surface An injection head B having an injection port 15, a shoulder cover C which covers the shoulder 3 of the aerosol container A and is detachably fitted, and protrudes so that the injection head B can be pushed down from the central window hole 24; A cap D that covers the head B and is detachably attached to the shoulder cover C, and can be reattached to the removed shoulder cover C with the cap D interposed between the head B and the ejection head B. At the same time, it is possible to degas by pressing down the ejection head B through the cap D at the time of remounting.

  As a second means, in the first means, the aerosol container A has an annular protrusion 4 erected from the trunk portion 2 through the shoulder portion 3 at the center of the upper surface, and the shoulder cover C The fitting cylinder 20 suspended from the inner peripheral edge of the top plate 21 covering the shoulder 3 is fitted and locked to the outer periphery of the annular protrusion 4 and the upper end of the support cylinder 25 standing from the inner peripheral edge of the top plate 21 The cap D forms a large-diameter portion 30a detachable from the small-diameter portion 25a at the lower end portion of the peripheral wall 30 via the outward-facing flange 31. At the same time, the outer flange 31 is brought into contact with the lower surface of the inward flange 26 in a state in which the top portion protrudes into the support cylinder 25 so as to be fitted into the shoulder cover C.

  As a third means, in the second means, the aerosol container A is formed in a tapered surface a that descends the upper surface of the shoulder portion 3, and the shoulder cover C is formed on the outer peripheral edge portion of the top plate 21. The fitting cylinder 20 can be disengaged by sliding and raising the lower end edge of the peripheral wall 23 that is further suspended on the tapered surface a to elastically deform the top plate 21.

  As a fourth means, in any one of the second means and the third means, a longitudinal groove 28 is provided to cut the fitting tube 20 of the shoulder cover C vertically.

  Since the aerosol type liquid injector of the present invention can perform the degassing operation by a simple operation of removing the shoulder cover C from the aerosol container A and then fitting the shoulder cover C again through the cap D, Handling is convenient. In addition, since an existing aerosol container and jet head can be used, manufacturing is easy, and there is an advantage that it can be obtained at low cost. Further, the structure of the cap and the shoulder cover is also simple, and from this point, the manufacture is easy and can be obtained at low cost.

  In addition, the aerosol container A has an annular protrusion 4 erected from the trunk portion 2 through the shoulder portion 3 at the center of the upper surface, and the shoulder cover C is an inner peripheral edge of the top plate 21 that covers the shoulder portion 3. The fitting cylinder 20 suspended from the portion is fitted and locked to the outer periphery of the annular protrusion 4, and the upper end portion of the support cylinder 25 erected from the inner peripheral edge of the top plate 21 is connected to the small diameter portion 25 a via the inward flange 26. In the state where the cap D is formed, a large-diameter portion 30a detachable from the small-diameter portion 25a is formed at the lower end portion of the peripheral wall 30 via the outward flange 31, and the top portion protrudes into the support tube 25. When the outer flange 31 is brought into contact with the lower surface of the inward flange 26 so that it can be fitted into the shoulder cover C, the cap D can be remounted in the removed shoulder cover C. The operation becomes easier.

  Further, the aerosol container A is formed on a tapered surface a that descends the upper surface of the shoulder portion 3 outward, and the shoulder cover C has the lower end edge of the peripheral wall 23 suspended from the outer peripheral edge portion of the top plate 21 on the tapered surface a. When the engagement of the fitting cylinder 20 is made possible by elastically deforming the top plate 21 by sliding it upward, the shoulder cover C can be easily removed from the aerosol container A without the need for tools. Can do.

  Further, when a longitudinal groove 28 is provided for longitudinally cutting the fitting tube 20 of the shoulder cover C, it is discharged into a cap D interposed between the shoulder cover C and the ejection head B when degassing. The remaining gas can be discharged to the outside more smoothly. Further, there is an advantage that it is easy to adjust the engagement strength between the fitting cylinder 20 and the annular protrusion 4 during manufacturing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show an example of an aerosol type liquid ejector of the present invention, and the aerosol type liquid ejector 1 includes an aerosol container A, an ejection head B, a shoulder cover C, and a cap D.

  In the aerosol container A, an annular protrusion 4 is erected on the central portion of the upper surface of the trunk portion 2 via the shoulder portion 3, and the stem 5 protrudes from the central portion of the upper surface of the annular protrusion 4 so as to be pushed downward. A built-in discharge valve (not shown) is opened when the stem 5 is pushed in, and a known jetting mechanism configured to jet the stored liquid in the aerosol container A from the stem 5 by gas pressure is provided. Further, the upper surface of the shoulder portion 3 is formed as a tapered surface a descending outward, and a downward stepped portion 6 is provided around the lower portion of the outer periphery of the annular protrusion 4.

  The ejection head B is formed of a synthetic resin, and is fitted on the stem 5 to push down and eject the liquid. A vertical cylinder 11 having a lower end introduction port 10 closely fitted to the stem 5 is provided on the top wall. (12) The tube is vertically suspended from the center of the back surface and has a cylindrical shape with a peripheral wall (13) suspended from the peripheral edge of the top wall (12). It opens to the peripheral wall 13 portion as an injection port 15, and the liquid from the stem 5 is configured to be injected from the injection port 15 through the inside of the vertical cylinder 11 and the nozzle cylinder 14.

  The shoulder cover C is also made of synthetic resin, and the fitting cylinder 20 fitted to the outer periphery of the annular protrusion 4 is suspended from the inner peripheral edge of the back surface of the top plate 21 covering the shoulder 3 of the aerosol container A. . An engaging protrusion 22 projecting from the lower end of the inner periphery of the fitting cylinder 20 is forcibly engaged with the lower surface of the downward stepped portion of the annular protrusion 4 to prevent upward slipping. Further, a peripheral wall 23 extending from the peripheral edge of the top plate 21 to the upper peripheral edge of the aerosol container A is suspended. Further, the ejection head B protrudes from a window hole 24 provided in the center of the top plate 21 so as to be pushed down. A support cylinder 25 is erected from the inner peripheral edge of the top plate 21 that is the peripheral edge of the window hole 24. The support cylinder 25 is formed with a small diameter portion 25a whose upper end portion is reduced in diameter via an inward flange 26, and is erected on the lower periphery of the ejection head B where the liquid can be ejected from the ejection port 15. A plurality of ribs 27 are provided on the inner peripheral edge of the lower surface of the top plate 21 so that the lower surface is in contact with the upper surface of the annular protrusion 4, and a gap is provided between the top plate 21 and the annular protrusion 4. Further, the fitting cylinder 20 is provided with a plurality of longitudinally cut grooves 28 in the circumferential direction so that gas can be discharged without stagnation through the gaps and the vertically cut grooves 28 when degassing. .

  The cap D is also made of a synthetic resin, covers the ejection head B and is detachably attached to the shoulder cover C. The lower end of the peripheral wall 30 is formed on the large diameter portion 30a via the outward flange 31, The top wall 32 of the peripheral wall 30 has a dome-shaped top wall 32 extending from the top edge, and has a top-bottomed cylindrical shape. The inner circumference of the large diameter portion 30a is substantially the same diameter as the outer circumference of the small diameter portion 25a, the outer circumference of the peripheral wall 30 is substantially the same diameter as the inner circumference of the small diameter portion 25a, and the outer diameter of the large diameter portion 30a is The inner periphery of the support tube 25 is configured to be substantially the same shape. Therefore, normally, the large diameter portion 30a is fitted to the outer periphery of the small diameter portion 25a, and the cap D is detachably fitted to the shoulder cover C, and the cap D is interposed between the ejection head B as necessary. Thus, the removed shoulder cover C can be remounted. At that time, the ejection head B is pushed down through the cap D so that the gas can be released.

  When the aerosol type liquid ejector 1 is used, the stored liquid is ejected from the ejection port 15 when the cap D is removed from the state of FIG. When the stored liquid is used up, as shown in FIG. 2 (a), the peripheral wall 23 of the shoulder cover C is pressed from both sides, and the lower end edge is slid and raised on the tapered surface a on the shoulder 3. The top plate 21 is elastically deformed, and the fitting cylinder 20 is partially opened along with it, and the engagement is released, and the shoulder cover C is removed from the aerosol container A. Next, as shown in FIG. 2 (b), the cap D is removed from the shoulder cover C and attached to the ejection head B. Further, as shown in FIG. 2 (c), the shoulder cover C is remounted from above. The shoulder cover C is mounted again by engaging the engaging ridge 22 with the downward stepped portion 6 while pushing down the upper surface of the outward flange 31 with the lower surface of the inward flange 26. In this state, the ejection head B is pushed down, and the discharge valve of the aerosol container A is in the open state. Therefore, the residual gas is discharged from the ejection port 15 through the longitudinal groove 28 to the outside.

  FIG. 3 shows another example. In this example, a notch 29 is provided at a predetermined position on the lower end of the peripheral wall 23 of the shoulder cover C, and a tip of a coin 40 is inserted through the notch 29, and the shoulder cover C is attached by the lever principle. It is configured to lift and disengage the engaging ridge 22 from the downward step 6 and remove the shoulder cover C from the aerosol container A. The other configuration is the same as that of the example of FIG.

It is a longitudinal cross-sectional view of this invention aerosol-type liquid ejector. Example 1 It is explanatory drawing explaining an effect | action of this invention aerosol-type liquid ejector. Example 1 It is a longitudinal cross-sectional view of this invention aerosol-type liquid ejector. (Example 2)

Explanation of symbols

A ... aerosol container, 3 ... shoulder, 4 ... annular projection, 5 ... stem, a ... tapered surface,
B ... jetting head, 10 ... introduction port, 15 ... jetting port, C ... shoulder cover, 20 ... fitting tube, 21 ... top plate,
23 ... Shoulder cover peripheral wall, 24 ... Window hole, 25 ... Support cylinder, 25a ... Small diameter part, 26 ... Inward flange,
D ... Cap, 30 ... Cap peripheral wall, 30a ... Large diameter part, 31 ... Outward flange

Claims (4)

An aerosol container A that protrudes from the stem 5 so as to be able to be pushed down in an upwardly biased state from the upper surface and an inlet 10 at the lower end of the stem 5 are fitted into the stem 5 so as to be able to be pushed down, and an injection port 15 is opened on the side or upper surface. The spray head B and the shoulder portion 3 of the aerosol container A are covered so as to be detachably fitted, and the shoulder cover C protruding so as to be able to push down the spray head B from the central window hole 24 and the spray head B are covered. A cap D that is detachably attached to the shoulder cover C, and is configured such that the removed shoulder cover C can be reattached with the cap D interposed between the cap D and the ejection head B. An aerosol-type liquid ejector characterized in that degassing is possible by depressing the ejection head B through a cap D.   The aerosol container A is provided with an annular protrusion 4 standing at the center of the upper surface of the body 2 via the shoulder 3, and the shoulder cover C is formed from the inner peripheral edge of the top plate 21 that covers the shoulder 3. The suspended fitting cylinder 20 is fitted and locked to the outer periphery of the annular protrusion 4, and the upper end portion of the support cylinder 25 erected from the inner peripheral edge of the top plate 21 is formed on the small diameter portion 25 a via the inward flange 26. The cap D is formed with a large-diameter portion 30a that can be attached to and detached from the small-diameter portion 25a at the lower end portion of the peripheral wall 30 via the outward flange 31, and inward with the top portion protruding into the support tube 25. The aerosol liquid ejector according to claim 1, wherein an outward flange 31 is brought into contact with the lower surface of the flange 26 so as to be fitted into the shoulder cover C.   The aerosol container A is formed on a tapered surface a that descends the upper surface of the shoulder portion 3 outward, and the shoulder cover C has a lower end edge of the peripheral wall 23 that is suspended from the outer peripheral edge portion of the top plate 21 on the tapered surface a. The aerosol-type liquid ejector according to claim 2, wherein the engagement plate 20 can be disengaged by sliding up and elastically deforming the top plate 21.   The aerosol type liquid ejector according to any one of claims 2 and 3, further comprising a longitudinal groove 28 that vertically cuts the fitting cylinder 20 of the shoulder cover C.

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