JP2007168860A - Aerosol type liquid jetting instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol type liquid jetting instrument having a jetting head B attached to the upper end of an aerosol vessel A so that the jetting head B is pushed down, wherein the aerosol type liquid jetting instrument is characterized in that a remaining gas existing after exhausting a housed liquid is easily discharged, and that the vessel has a simple construction and is manufactured at a low cost. <P>SOLUTION: There is mounted a cover frame C attached to a circular protrusion 4 standing in the center of the upper surface of the aerosol vessel A. An inner circumferential margin part of a flange-like top plate 21 of the cover frame C is formed into a semi-circular stopping band 24 capable of rising and lying down. The state of the jetting head B being pushed down is maintained by raising the stopping band 24 and fixing it to the jetting head B. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 claw that responds to the pressing operation of the injection button, and the claw upper surface in the rotation 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 upward 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 rotation direction of the guide surface portion and has an abutment 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, and a cover frame.

  The aerosol container has a known jetting mechanism configured such that the stem protrudes from the center of the upper surface so that it can be pushed down in the upward biased state, the built-in discharge valve opens by pushing the stem, and the stored liquid is jetted from the stem by gas pressure. The provided one is used. Moreover, in order to fit and lock the cover frame, an aerosol container in which an annular protrusion is erected at a predetermined position on the center of the upper surface can be preferably used.

  The injection head is made of synthetic resin, etc., and is fitted to the bottom of the aerosol container so that it can be pushed down, and the injection head is opened on the side or top surface. It has a flow path to reach.

  The cover frame is formed of a synthetic resin or the like, and is configured to be fitted and locked onto an aerosol container around the stem, and to be configured to project the ejection head so that it can be pushed down from the central window hole. In addition to the function of the cover frame in this type of conventional aerosol jet, such as the provision of decorativeness and the provision of safety by covering the caulking portion etc. on the upper surface of the aerosol container, When available. The cover frame can be fitted and locked to the aerosol container by, for example, fitting a fitting cylinder to the outer periphery of the annular protrusion standing on the aerosol container upper surface or the outer periphery of the upper end of the aerosol container, and overriding between the screws or the protrusions. It can be locked by locking means such as engagement.

  The cover frame is formed with a semi-annular locking band that can be raised and lowered at the inner peripheral edge of the top plate, and the locking band is raised and locked to the jet head, thereby maintaining the jetting-down jet state of the jet head. It is configured as follows. In other words, the ejecting head pushed down to the ejecting state is engaged with the locking band that is turned upright to maintain the ejecting state of the ejecting head. As a form of locking of the ejection head by the locking band, a form over the top of the ejection head or a form of providing a locking part for locking the locking band to the ejection head can be adopted.

  When hanging over the top of the ejection head, the locking band and the ejection head can be rotated on the ejection head top pushed down to the ejection state, and abut against the rise of the ejection head in that state. Select the shape, size, etc.

  The locking portion is formed on the side of the jet head in the form of an upward stepped portion, a protrusion, a concave portion, a locking hole, etc. In this case, the size of the locking band is larger than when locking to the upper surface of the jet head. Even if it is small, there is an advantage that it functions sufficiently, but there is also a disadvantage that the existing ejection head cannot be used. Further, in order to prevent the locking band from coming off more reliably, a locking piece provided with a gap with the peripheral wall of the ejection head may be provided upright. Further, by forming the locking piece so as to be able to bend and deform, it is easy to attach the locking band to the ejection head.

  The specific shape of the locking band can be variously adopted as long as the above requirements are satisfied. In general, an arc-shaped band can be preferably used, and a band-shaped band having a partial polygonal shape can be used. The base end portions of both sides of the locking band may be pivotally connected by thin hinges, or may be formed separately and pivotally attached to each other. However, considering the cost, etc. It is preferable to form it integrally through a hinge. If the cost is further taken into consideration, the cover frame and the ejection head may be formed integrally with a synthetic resin. In this case, it is good to connect each with the positional relationship of the state with which each was mounted to the aerosol container. By integrally forming the cover frame and the ejection head, it is possible to provide an opening clear function.

  As a first means, an aerosol container A that protrudes the stem 5 so as to be able to be pushed down in a state of being biased upward from the central portion of the upper surface, and a lower end introduction port fitted to the stem 5 so as to be pushed down and attached to the introduction port. A jetting head B having a jetting port 12 communicating therewith, and a cover frame C that fits and locks on an aerosol container A around the stem 5 and protrudes so that the jetting head B can be pushed down from the central window hole 23; The inner peripheral edge of the top plate 21 of the cover frame C is formed in a semi-annular locking band 24 that can be raised and lowered, and the locking band 24 is turned upright and locked to the ejection head B. The push-down injection state is maintained.

  As a second means, in the first means, the locking band 24 is turned upright and locked to the upper surface of the ejection head B, so that the ejecting state of the ejection head B is maintained. Configured.

  As a third means, in the first means, a locking piece 14 is erected on the upward step portion 13 formed at a predetermined position on the outer surface of the peripheral wall 11 of the ejection head B with a gap from the peripheral wall 11. The locking band 24 is turned upright so as to get over and engage between the locking piece 14 and the outer surface of the peripheral wall 11, thereby maintaining the pressed-down jet state of the jet head B.

  As a fourth means, in any one of the first means to the third means, the jet head B and the cover frame C, the jet head B to the stem 5, and the cover frame C to the annular projection 4 were formed so as to be integrated and separable in the positional relationship of being respectively fitted.

  The aerosol-type liquid injector of the present invention is configured to maintain the pressed-down injection state of the injection head B by raising the locking band 24 of the cover frame C and locking it to the injection head B. The degassing operation is very simple and convenient to handle. 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 cover frame C is simple, and from this point of view, manufacturing is easy and can be obtained at low cost.

  In a case where the push-down jetting state of the jet head B is maintained by turning the latch band 24 upright and catching on the upper surface of the jet head B, the existing aerosol container A and jet head B are arranged. In addition, the degassing can be performed by an extremely simple operation in which the locking band 24 is also turned upright on the ejection head B.

  A locking piece 14 is erected on an upward stepped portion 13 formed at a predetermined position on the outer surface of the peripheral wall 11 of the ejection head B, and the locking band 24 is rotated upright to lock the locking piece. 14 and the outer surface of the peripheral wall 11 are moved over and engaged to maintain the ejecting state of the ejecting head B so that the retaining belt 24 is securely engaged and the gas venting operation is performed. There are no inconveniences such as disengagement in the inside, and since the standing height of the locking band 24 is small, restrictions on the size and diameter of the aerosol container A and the ejection head B are reduced.

  When the ejection head B and the cover frame C are formed so as to be integrally and separable in a positional relationship in which the ejection head B is fitted to the stem 5 and the cover frame C is fitted to the annular protrusion 4. In addition, since the ejection head B and the cover frame C are always aligned when mounted on the aerosol container A, the assembling operation can be performed efficiently. Further, the cover frame C is easily fitted into the aerosol container A, and in use, the ejection head B is separated from the cover frame C and used, so that the unused state can be easily confirmed.

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

  1 to 3 show an example of an aerosol type liquid ejector according to the present invention. The aerosol type liquid ejector 1 includes an aerosol container A, an ejection head B, and a cover frame C.

  In the aerosol container A, an annular protrusion 4 is erected on the upper portion 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 ejection mechanism configured to eject the stored liquid in the aerosol container A from the stem 5 by gas pressure is provided. Further, 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 used for fitting the stem 5 to push down and ejecting the liquid. A vertical cylinder (not shown) in which the lower end of the stem 5 is closely fitted. The top wall 10 is vertically suspended from the center of the back surface, and the peripheral wall 11 is vertically suspended from the periphery of the top wall 10. A nozzle cylinder (not shown) having a base end opened at the top of the vertical cylinder is extended laterally. The tip is opened as an injection port 12 in the peripheral wall 11 portion, and the liquid from the stem 5 is configured to be injected from the injection port 12 through the vertical cylinder and the nozzle cylinder.

  The cover frame C is also made of synthetic resin, and a flange-like top plate 21 extends inwardly from the upper end of the cylindrical fitting cylinder 20 fitted on the outer periphery of the annular protrusion 4. An engaging protrusion 22 projectingly provided at the lower end of the inner periphery of the fitting cylinder 20 is forcibly engaged with the lower surface of the downward step portion 6 of the annular protrusion 4 to prevent upward slipping. Further, the ejection head B protrudes from a window hole 23 provided at the center of the top plate 21 so as to be pushed down.

  Further, the cover frame C is provided with a locking band 24. The locking band 24 is formed in the shape of an arc band by forming a cut groove 25 at a position of a predetermined width from the inner periphery of the rear part of the top plate 21 of the cover frame C. A hinge 26 is provided. Further, the rear surface of the fitting cylinder 20 is recessed downward so that a recess 27 for hooking a nail or a finger on the locking band 24 is formed. The inner diameter of the locking band 24 is set to an inner diameter that can be passed over the upper surface of the ejection head B when the ejection head B is pushed down to a position where the ejection head B can be ejected.

  When the aerosol type liquid ejector 1 is used, the stored liquid is ejected from the ejection port 12 when the ejection head B is pushed down from the state of FIG. When the stored liquid is used up, the claw is first hooked on the locking band 24 from the recess 27 and is turned upright. As shown in FIG. 2, it is engaged with the upper surface of the ejection head B pushed down to the ejectable position and ejected. The lowered state of the head B is maintained. As a result, residual gas is discharged from the injection port 12 to the outside.

  4 to 6 show other examples, in which a locking portion for locking the locking band 24 is provided on the ejection head B. FIG. The locking portion is configured by standing up a locking piece 14 on an upward stepped portion 13 provided at the rear portion of the peripheral wall 11 of the ejection head B with a space from the peripheral wall 11. In this way, it is configured such that the ejecting state of the ejection head B is maintained by moving over and engaging between the locking piece 14 and the outer surface of the peripheral wall 11. The locking band 24 in this case has the same form as the example of FIG. 1, but its length is short, and therefore the height at the time of turning up is smaller than the example of FIG.

  In the case of this example, the ejection head B and the cover frame C are integrally formed through an easily cut connecting piece 30. In this case, as shown in FIG. 4, the cover frame C is fitted to the annular protrusion 4, and the ejection head B is in a state where the introduction port at the lower end of the vertical cylinder is fitted to the upper end of the stem 5. The other configuration is the same as that of the example of FIG.

  In this case, the aerosol type liquid ejector 1 is used by cutting the connection portion of the connecting piece 30 by forcibly pushing down the ejection head B from the state of FIG. 4 or FIG. Further, when degassing, similarly, first, the claw is first hooked on the locking band 24 from the recess 27 and is turned upright so that the locking piece 14 of the ejection head B pushed down to a sprayable position as shown in FIG. And is engaged with the peripheral wall 11 to maintain the lowering state of the ejection head B. As a result, residual gas is discharged from the injection port 12 to the outside.

It is the side view which notched a part of this invention ejector. Example 1 It is a perspective view from diagonally backward of this invention ejector. Example 1 It is a perspective view which shows the degassing state of this invention ejector. Example 1 It is the side view which notched a part of this invention ejector. (Example 2) It is a perspective view from diagonally backward of this invention ejector. (Example 2) It is a perspective view which shows the degassing state of this invention ejector. (Example 2)

Explanation of symbols

A ... aerosol container, 4 ... annular projection, 5 ... stem,
B ... jetting head, 12 ... jetting port, 13 ... upward step, 14 ... locking piece,
C: Cover frame, 20: Fitting cylinder, 21 ... Top plate, 23 ... Window hole, 24 ... Locking band,

Claims (4)

  An aerosol container A projecting the stem 5 so as to be able to be pushed down in a state of being biased upward from the central portion of the upper surface, and an inlet 12 at the lower end fitted into the stem 5 so as to be able to be pushed down, and an injection port 12 communicating with the inlet are provided. And a cover frame C that fits and locks on the aerosol container A around the stem 5 and protrudes from the central window hole 23 so that the injection head B can be pushed down. The top plate of the cover frame C 21 The inner peripheral edge is formed in a semi-annular locking band 24 that can be raised and lowered, and the locking band 24 is turned upright and locked to the ejection head B, whereby the ejection state of the ejection head B is maintained. An aerosol type liquid ejector characterized by being configured as described above.   2. The aerosol type liquid ejector according to claim 1, wherein the ejecting head B is configured to maintain a pushed-down jetting state by turning the locking belt 24 upright and locking it to the upper surface of the jetting head B.   A locking piece 14 is erected on an upward stepped portion 13 formed at a predetermined position on the outer surface of the peripheral wall 11 of the ejection head B, and the locking band 24 is rotated upright to lock the locking piece. The aerosol liquid ejector according to claim 1, wherein the ejecting head B is configured to maintain a pushed-down jetting state by overcoming engagement between the outer wall 14 and the outer surface of the peripheral wall 11.   The ejection head B and the cover frame C are formed so as to be integrally and separable in a positional relationship in which the ejection head B is fitted to the stem 5 and the cover frame C is fitted to the annular protrusion 4. The aerosol liquid ejector according to any one of claims 1 to 3.

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