JP2015209245A - Inside/outside double container aerosol spray mechanism and aerosol type product with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inside/outside double container aerosol spray mechanism in which air remaining in an inner space area at an upper end side of an inner container is reliably discharged.SOLUTION: A housing 4 includes: a central cylindrical part 4b for housing a stem 6 and stem gasket 8, etc., linked with spraying operation, and setting an internal passage area B to the direction of contents; an outer tubular part 4a disposed outside of this, and engaged with the upper end side inner circumferential surfaces 2a, 2b of an inner container 2; and a longitudinal plate rib shape part 4j plurally set between a central cylindrical outsider peripheral surface and an outer tubular part inner circumferential surface. A housing cover 5 (3) is provided in a shape of surrounding the lower side of the above housing. The housing cover 5 (3) forms an outside passage area A continuing to an internal passage area B in the lower direction from the upper end side inner space area of the inner container 2 between the outer circumferential surface of the housing 4 and itself. Also, an upper end side piece part 5g gets into the individual upper end side inner space area set between adjacent ones of the longitudinal plate rib shape part 4j and acts as an inlet zone of the outside passage area A, and thereby the air remaining between the longitudinal plate rib shape parts is discharged reliably.

Description

  The present invention is for injection filled in a space between an outer container having an upper opening and a bag-like inner container having an upper opening that accommodates the contents to be injected (eg, stock solution). The present invention relates to an inner and outer double container aerosol injection mechanism in which the contents are injected into an external space area by the action of gas.

  In particular, the contents that flow into the lower end side of the housing that accommodates the valve action portion and is disposed in the upper opening portion of the inner container are moved from the upper end inlet portion on the outer peripheral surface side of the housing to the lower end side of the housing before this inflow. And an aerosol injection mechanism that passes through the continuously formed outer passage area.

  In this way, the contents to be injected in the inner container do not flow directly into the lower end side of the housing, but move downward in the outer passage area starting from the upper end side of the outer peripheral surface of the housing and then flow into the lower end side of the housing.

  That is, the contents to be injected (below the outer passage area inlet) of the inner container are “internal movement to the outer passage area inlet on the upper outer peripheral surface of the housing → downward movement inside the outer passage area”. It flows into the lower end side of the housing via a detour route via the upper end side.

  In the present invention, the air remaining in the inner space area on the upper end side of the inner container when the later-described valve unit is mounted on the inner container after the contents are accommodated is discharged by this detour route by the initial injection operation of the aerosol type product. It is discharged into the space.

  Further, a plurality of vertical plate ribs for reinforcing strength are formed in the radial direction of the lower surface of the bowl-shaped portion of the housing having the conventional mounting cup function, and an outer passage is formed between the adjacent vertical plate ribs. The entrance part of the area is set.

  Further, the vertical plate rib-shaped portion in the lower surface radial direction of the flange-shaped portion, that is, the vertical plate rib-shaped portion in the annular ceiling portion between the outer peripheral surface of the outer cylindrical portion and the outer peripheral surface of the central cylindrical portion, It is provided in a portion (portion closer to the outer tubular portion) where the longitudinal groove-like portion on the outer peripheral surface of the tubular portion is not formed.

  Further, as the housing itself, a housing having a general shape to which a dip tube for inflow of contents can be attached is used.

  In this specification, the opening side of each of the outer container and the inner container is “upper”, and the bottom side opposite to the opening side in the longitudinal direction is “lower”. The side perpendicular to the vertical direction is referred to as “horizontal”.

  The applicant of the present application is that the air generated in the inner space area on the upper end side of the inner container is discharged to the outer space area in accordance with the lowering of the inner container in the valve unit loading process after the stock solution is injected. We have already proposed a bag-like inner container with a devised part shape (see Patent Document 1).

JP 2011-13647 A

  The present invention does not particularly change the shape of the bag-like inner container, but provides a bypass for injecting the contents into the housing with the upper end side of the inner container as an inlet on the outer peripheral surface side of the housing, and the inner container by the initial injection operation. It is based on the idea of exhausting residual air inside the upper end side.

  By setting up a new content injection bypass route consisting of the outer passage area of the housing, the technology for the residual air discharge in the inner space area on the upper end side of the inner container in the inner and outer double container aerosol injection mechanism should be enriched. With the goal.

  In addition, the entrance part (inflow part) of the outer passage area is set between the reinforcing vertical plate ribs formed in the lower surface radial direction of the bowl-shaped part (ring ceiling part) between the inner and outer cylindrical parts of the housing And it aims at ensuring discharge | emission of the residual air between this vertical board rib-shaped part.

  Further, the reinforcing vertical plate rib-shaped portion is formed between the outer cylindrical portion and a so-called convex portion closer to the outer cylindrical portion in the outer peripheral surface of the inner central cylindrical portion. The purpose is to reduce the amount of resin required for molding.

  Effective use of the housing and products in the inner and outer double container aerosol injection mechanism that discharges residual air in the inner space area on the upper end side of the inner container using a general-purpose housing that can be attached with a dip tube for inflow of contents The purpose is to reduce costs.

The present invention solves the above problems as follows.
(1) An outer container with an upper opening (for example, an outer container 1 described later), and an inner container in a flexible bag shape (for example, an inner container 2 to be described later) with an upper opening disposed inside and containing the contents to be ejected In the inner and outer double container aerosol injection mechanism in which the contents are injected into the external space region by the action of the injection gas filled in the space region between (for example, the pressurized space region 3 described later),
A valve action portion (for example, a stem hole portion 6b and a stem gasket 8 described later) interlocked with the injection operation of the contents;
A housing that accommodates the valve action part and is attached to a portion of the upper opening of the inner container to set an upward inner passage area (for example, an inner passage area B described later) of the content;
An outer passage area (for example, an outer side to be described later) is provided so as to surround the lower side of the housing and extends downward from the upper end side of the inner space area of the inner container to the inner passage area between the outer peripheral surface of the housing. A housing cover (for example, housing covers 5 (1) to 5 (5) described later) that forms a passage area A),
The contents injected into the external space area are
After the outer passage area is moved downward from the upper end side, the inner passage area on the downstream side is moved upward to pass through the valve action portion.
The thing of a structure aspect is used.
(2) In (1) above,
The housing is
A central cylindrical portion (for example, a central upper cylindrical portion 4b described later) that accommodates the valve action portion;
An outer cylindrical portion (for example, described later) disposed on the outer side of the central cylindrical portion and engaged with an upper peripheral side inner peripheral surface (for example, an inner upper end side annular portion 2a and an inner ring recessed portion 2b, which will be described later). Outer cylindrical portion 4a),
A plurality of vertical plate rib-like portions (for example, a vertical plate rib-like portion 4j for increasing strength described later) provided between the outer peripheral surface of the central cylindrical portion and the inner peripheral surface of the outer cylindrical portion. ,
The housing cover (for example, housing cover 5 (3), 5 (4), 5 (5) described later: FIGS. 3 to 7)
A circumferential upper end side piece (for example, a radial step described later) that enters each upper end inner space region set between adjacent ones of the vertical plate rib-shaped portions and acts as an inlet portion of the outer passage region. Provided with a piece 5g, a mortar-like piece 5k),
The thing of a structure aspect is used.
(3) In (2) above,
The vertical plate rib-shaped portion is
A convex portion (for example, a back side portion of an inner vertical groove portion 4g described later) which is an outer peripheral surface of the central cylindrical portion and is not formed with a content passage groove portion (for example, an outer vertical groove portion 4h described later). ) And the inner peripheral surface of the outer cylindrical portion,
The thing of a structure aspect is used.
(4) In the above (1), (2), (3),
The housing is
A lower cylindrical portion (for example, a lower central cylindrical portion 4d described later) to which a tube for inflow of contents can be attached,
The thing of a structure aspect is used.

  The subject of the present invention is an aerosol-type product comprising an inner / outer double container aerosol injection mechanism having such a configuration, and various injection target contents and injection gas, which will be described later, provided with this inner / outer double container aerosol injection mechanism It is.

The present invention is based on the above problem solving means.
(11) To enrich technology for residual air discharge in the inner space area at the upper end of the inner container,
(12) Ensure that the residual air is discharged between the reinforcing ribs of the flange-shaped part (ring ceiling part) of the mounting housing on the upper end of the inner container,
(13) Reduce the amount of resin required for housing molding,
(14) To make effective use of the housing and reduce product cost in the inner and outer double container aerosol injection mechanism that discharges residual air in the inner space area on the upper end side of the inner container.
be able to.

It is explanatory drawing which shows the inner / outer double container aerosol injection mechanism of the form which attached the housing cover 5 (1) which consists of a wide ring hook-shaped part 5e to the lower part of the outer surface of the housing 4 which can attach a general purpose dip tube. It is explanatory drawing which shows the inner and outer double container aerosol injection mechanism of the form which attached the housing cover 5 (2) which consists of a narrow ring-shaped part 5f to the lower part of the outer surface of the housing 4 of the same shape as FIG. It is explanatory drawing which shows the inner and outer double container aerosol injection mechanism of the form which attached the housing cover 5 (3) which consists of a stepped radial step-shaped piece part 5g to the lower part of the outer surface of the housing 4 of the same shape as FIG. . It is explanatory drawing which shows the perspective view of the housing cover 5 (3) of FIG. It is explanatory drawing which shows the inner and outer double container aerosol injection mechanism of the form which attached the housing cover 5 (4) which consists of mortar-shaped piece part 5k to the outer surface lower part of the housing 4 of the same shape as FIG. It is explanatory drawing which shows the perspective view of the housing cover 5 (4) of FIG. It is explanatory drawing which shows the perspective view of the housing cover 5 (5) which is a variation of the housing cover 5 (4) of FIG. 5, FIG.

  The form for implementing this invention is demonstrated using FIGS. 1-7.

  In addition, it has shown that the component (for example, outer upper end side cyclic | annular part 1a) of the following reference numbers with an alphabet is a part of component (for example, outer container 1) of the numerical part of the said reference number in principle.

The inner / outer double container aerosol injection mechanism shown in FIG.
-Hard outer container 1
-Inner container 2 containing the contents to be sprayed (stock solution) in a flexible bag shape
・ Pressurized space area 3 filled with injection gas
・ Valve mechanism (stem 6 + coil spring 7 + stem gasket 8)
・ Housing 4 for holding the valve mechanism
・ Housing cover 5 (1) -5 (5)
・ Housing gasket 9
・ Intermediate cover body 10 with double sealing action
・ Cover cap 11 for outer container 1, inner container 2 and housing 4
It consists of the components.

  Here, the characteristic components of the inner / outer double container aerosol injection mechanism of the present invention are the housing covers 5 (1) to 5 (5), and the other components are general-purpose ones.

  The constituent elements of the housing 4, the housing cover 5 (1) to 5 (5), the valve mechanism (6, 7, 8), the housing gasket 9, the intermediate cover body 10 and the cover cap 11 are integrated together. The valve unit VU is incorporated in the outer container 1 and the inner container 2.

  The annular hanging portion 11b of the cover cap 11 in the valve unit VU before being assembled is not yet clinched.

  The content injection path from the upper end side internal space region of the inner container 2 to the stem passage portion 6a includes a downward outer passage region A between the housing 4 and the housing covers 5 (1) to 5 (5), And an inner passage area B in the upward direction inside the housing on the downstream side.

The procedure for assembling and manufacturing aerosol products is well known,
(21) The inner container 2 is incorporated into the outer container 1 so as to maintain the initial height shape, and the contents to be injected (stock solution) are put into the inner container from the upper end of the opening.
(22) Next, the valve unit VU is mounted from above on both the inner and outer sides of the upper peripheral portions of the outer container 1 and the inner container 2, and the outer peripheral surface of the housing 4 and the upper peripheral side inner peripheral surface of the inner container are engaged. And the entire valve unit is set to a state slightly spaced upward from the outer container 1,
(23) Next, the lower portion of the unsealed housing gasket 9 and its portion are separated from the gap between the outer peripheral surface of the upper end side of the outer container 1 and the inner peripheral surface of the annular hanging portion of the cover cap 11 by a known gas filling device. Fill the gap between the outer container 1 and the inner container 2 with the injection gas,
(24) By a well-known gas filling device, the valve unit VU is pushed down, and the lower end side of the annular hanging portion 11b of the cover cap 11 is clinched inward.
The work procedure becomes.

  The inner container 2 incorporated in the outer container 1 in the step (21) has the bellows-like portion 2c with the initial length and does not contract in the vertical direction, and the lower end portion is the bottom surface of the outer container 1. Is held in a standing state in contact with. At this time, the upper end portion of the inner container 2 is positioned above that of the outer container 1 and slightly protrudes from the outer container.

  When the valve unit VU is pushed down in the step (24), the bellows-like portion 2c of the inner container 2 contracts in the vertical direction from the initial state of (21), and the upper end portion of the inner container is also the outer container 1. It moves to the shape (FIGS. 1 to 3 and FIG. 5) that has entered inside.

1 to 7,
“A” is an “outer vertical groove portion 4h to be described later—a downward step portion 4e and an upward step portion 5d to be described later” from an upper end portion of the inner space area of the inner container 2 to an inflow opening portion of a center lower cylindrical portion 4d to be described later. Separation part-an outer passage area (upstream passage area) composed of "the separation part between the outer peripheral surface of the central lower cylindrical part and the inner peripheral surface of the bottomed cylindrical part 5a described later",
B is a stem passage from this inflow opening portion through “an inner space of a later-described center lower cylindrical portion 4d—a later-described vertical hole portion 4k—an inner space of a later-described center upper tubular portion 4b—a later-described stem hole portion 6b”. Inner passage area (downstream passage area) leading to section 6a,
Respectively.

Also,
1 is a hard outer container having an upper opening in which an inner container 2 described later is disposed;
1a is an upper end side portion of the outer container, and an outer upper end side annular portion on which the housing 4 is disposed,
1b is an intermediate ring dent that is initially formed in the lower end continuous portion of the outer upper end side annular portion 1a,
2 is an upper opening which is disposed inside the outer container 1 and accommodates the contents (stock solution) to be injected,
2a is an upper end side portion of the inner container, and an inner upper end side annular portion (the inner container of the inner container) disposed and held between the outer upper end side annular portion 1a of the outer container 1 and the outer cylindrical portion 4a of the housing 4. Inner peripheral surface on the upper end side),
2b is formed at the time of blow molding of the inner container, and an inner ring dent part (the inner peripheral surface on the upper end side of the inner container) disposed on the opposite part of the intermediate ring dent part 1b of the outer container 1,
2c is a bellows-like portion formed on the upper portion of the inner container and extending in the vertical direction;
3 is a pressurized space region that is composed of an annular circumferential portion and a bottom portion between the outer container 1 and the inner container 2, and is filled with a gas for injection;
Respectively.

Also,
4 is an integrally molded product made of plastic having a conventional mounting cup function, and is held at the upper end side of the outer container 1 and the inner container 2, and a known valve mechanism (stem 6 + coil spring 7 + stem gasket 8) is placed in the center. A housing that is housed and held in a cylindrical part,
4a is a part of the housing, and the upper end side portion of the inner container 2, the upper end side portion of the outer container 1, and the annular hanging portion 11b of the cover cap 11 are arranged outward from the outer peripheral surface thereof. In order, the outer cylindrical part arranged in a three-layer state,
4b has the same center axis in the vertical direction as the outer cylindrical portion 4a, and has a large-diameter central upper cylindrical portion that houses and holds the lower portion of the stem 6 and the coil spring 7.
4c is a ring ceiling part that acts as a so-called top plate part between the outer cylindrical part 4a and the central upper cylindrical part 4b,
4d is formed continuously from the central upper cylindrical portion 4b to the lower side thereof, functions as an input side of the inner passage area B of the injection target contents (raw solution) of the inner container 2, and is not used in the present invention. A small-diameter central lower cylindrical part to which a dip tube for material inflow (not shown) can be attached,
4e is an annular downward stepped portion formed continuously between the upper end portion of the central lower cylindrical portion 4d and the lower end portion of the central upper cylindrical portion 4b;
4f is an outer ring-shaped concave portion that is formed on the outer peripheral surface of the upper end side of the outer cylindrical portion 4a and holds the inner peripheral surface of the housing gasket 9 described later.
4g is a total of six inner longitudinal groove portions (a part of the inner passage area B) for passage of contents formed on the inner peripheral surface of the central upper cylindrical portion 4b at regular intervals.
4h is an outer vertical surface for passing a total of six contents formed at equal intervals on the back side of the inner peripheral surface portion where the inner vertical groove portion 4g is not provided on the outer peripheral surface of the central upper cylindrical portion 4b. Groove part (groove part for contents passage: part of outer passage area A),
4j is an inner peripheral surface of the outer cylindrical portion 4a, and a back side portion of the inner vertical groove portion 4g on the outer peripheral surface of the central upper cylindrical portion 4b (= a convex portion where the outer vertical groove portion 4h is not formed). A total of six vertical plate ribs for increasing the strength formed in the upper and lower flat plate modes extending to the ring ceiling portion 4c at equal intervals in the radial direction of the outer cylindrical portion and the central upper cylindrical portion. ,
4k is a vertical hole for passing the contents formed at the boundary between the central upper cylindrical part 4b and the central lower cylindrical part 4d,
4m is an annular lower inner step formed on the innermost portion of the ring ceiling portion 4c and holding a stem gasket 8 described later,
4n is an annular upper and outer step formed on the outer portion of the lower inner step 4m and holding the intermediate cover body 10,
4p is an outer end side portion of the ring ceiling portion 4c protruding from the upper end of the outer cylindrical portion 4a to the outside of the horizontal plane, and an annular flange portion for holding the housing gasket 9,
Respectively.

Also,
5 (1) to 5 (5) are fitted to the outer peripheral surface of the central upper cylindrical portion 4b of the housing 4, respectively, from the upper end side internal space of the inner container 2 to the inflow opening of the central lower cylindrical portion 4d. A sheath cover (5 (1) is used in FIG. 1, 5 (2) is used in FIG. 2, 5 (3) is used in FIGS. 3 and 4, 5 (4) ) Is used in FIG. 5 and FIG. 6, and 5 (5) is used in FIG.
5a comprises a lower portion of the housing cover, and has a small-diameter bottomed cylindrical portion set so as to be separated from the center lower cylindrical portion 4d.
5b is a bulging portion formed at the center of the bottom surface of the bottomed cylindrical portion 5a,
5c consists of the upper part of the housing cover, and has a large-diameter cover upper cylindrical part set so as to be fitted to the outer peripheral surface of the central upper cylindrical part 4b,
5d is an annular upward stepped portion formed continuously between the inner upper end portion of the bottomed cylindrical portion 5a and the inner lower end portion of the cover upper cylindrical portion 5c,
5e is a wide ring-shaped portion (see FIG. 1) that is formed continuously from the upper end portion of the upper cylindrical portion 5c of the cover to the outside of the horizontal plane and is in contact with the lower end surface of the vertical rib portion 4j of the housing 4.
5f is a narrow ring-shaped portion (see FIG. 2) that is formed continuously from the upper end portion of the cover upper cylindrical portion 5c outward in the horizontal plane and contacts the lower end surface of the vertical plate rib-like portion 4j of the housing 4.
5 g is an aspect of an ascending staircase from the upper end portion of the cover upper cylindrical portion 5 c to the outer side (radial direction) of the horizontal plane, and an aspect disposed between the vertical plate rib portions 4 j adjacent to the housing 4. A total of six radially stepped pieces formed in a circumferential jump (the upper end piece in the circumferential direction: see FIGS. 3 and 4),
5h is a total of six bottom annular portions consisting of the lower inner portion of the radial stepped piece 5g,
5j is a total of six upper surface annular portions composed of upper and outer portions of the radial stepped piece portion 5g,
5k is a mortar-shaped aspect that extends upward from the upper end portion of the upper cylindrical portion 5c of the cover, and is formed so as to jump in the circumferential direction in an aspect that is disposed between the vertical plate rib-shaped portions 4j adjacent to the housing 4. 6 mortar-shaped pieces in total (upper side piece in the circumferential direction: see FIGS. 5 to 7),
5m is set to be continuous in the vertical direction of the cover upper cylindrical portion 5c from the gap between the adjacent radial stepped piece portions 5g and mortar-shaped piece portions 5k, and the housing covers 5 (3), 5 (4) , 5 (5) when attached to the housing 4, a total of six vertical cutouts that act as entry space areas for the vertical plate ribs 4j,
5n is a bottom surface of a vertical notch portion that comes into contact with the lower end surface of the vertical plate rib-shaped portion 4j with the housing cover 5 (3), 5 (4), 5 (5) attached to the housing 4;
5p is provided in a chamfered manner of about 45 degrees so as to enlarge the circumferential entrance side of the vertical cutout portion 5m of the housing cover 5 (4), and guides the vertical plate rib-like portion 4j to the vertical cutout portion. A tapered guide (see FIG. 7) to facilitate entry into the lower part of the
Respectively.

Also,
6 is a known stem which is attached to an operation button (not shown) and interlocks in the vertical direction and exhibits a valve action with a stem gasket 8 which will be described later.
6a is a stem internal space region, a stem passage portion for passing the contents to be sprayed (raw solution),
6b is a pair of stem hole portions (valve action portions) for communicating between the stem passage portion 6a and the inner space of the central upper tubular portion 4b in the operation mode at the time of the content injection operation;
6c is an inner ring concave portion formed in the circumferential direction of the outer periphery of the stem including the stem hole portion 6b and exhibiting a valve action between the stem gasket 8 described later,
7 is a well-known coil spring disposed between the bottom surface portion of the central upper tubular portion 4b and the lower step portion of the stem 6, and biases the stem upward.
8 is held in the lower inner step portion 4m of the housing 4 and the inner ring concave portion 6c of the stem 6, and has an annular shape that exhibits a valve action on the stem hole portion 6b and a sealing action on the inner space region of the central upper tubular portion 4b. Stem gasket (valve action part),
9 is an annular housing gasket that exhibits a sealing action in close contact with the upper annular portions of the outer container 1 and the inner container 2, the outer annular concave portion 4f and the annular flange portion 4p of the housing 4, and the like.
Respectively.

Also,
10 is held by the upper and outer step portions 4n of the housing 4 so as to cover the upper surface excluding the inner end side of the stem gasket 8, and the seal leakage between the stem gasket and the lower inner step portion 4m of the housing. An annular intermediate cover body that has a double-sealing action,
11 is a top surface having a central opening for moving the stem and its side surface, and a valve mechanism is attached to the inner container 2 containing the contents, and the pressurized space 3 is filled with the injection gas. For example, an aluminum cover cap that tightly integrates the inner and outer containers and the valve mechanism by a known clinching process,
11a is an upper ring-shaped concave portion that is set on the inner end side of the upper surface of the cover cap and presses and holds the intermediate cover body 10,
11b is an annular hanging portion formed on the outer end side of the top surface of the cover cap,
11c is an outer ring dent formed on the lower end side of the annular hanging portion 11b by clinching,
Respectively.

  Here, the inner container 2, the housing 4, the housing covers 5 (1) to 5 (5), the stem 6 and the intermediate cover body 10 are made of plastic made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like. The coil spring 7 is made of metal such as stainless steel. The coil spring may be made of plastic.

  The outer container 1 and the cover cap 11 are made of metal, and the stem gasket 8 and the housing gasket 9 are made of plastic or rubber.

The basic features of the illustrated inner and outer double container aerosol injection mechanism are:
(31) An inner passage area B in which the injection target content flows from the lower opening side of the central lower tubular portion 4d and moves to the upper stem passage portion 6a is provided. Using a general-purpose housing 4 that can be attached with a dip tube (not shown) for inflow of goods,
(32) The upper end of the inner container 2 is placed between the outer peripheral surface of the housing and the inner peripheral surface of the housing cover by surrounding the general-purpose housing 4 with a sheath-like housing cover 5 (1) -5 (5) from below. Formed the outer passage area A that continues from the side inner space area to the inner passage area B downward
That is.

  That is, by setting the upper end side inner space area of the inner container 2 as the inflow portion of the outer passage area A, the upper end side inner space can be obtained by performing the initial injection operation once to several times before shipping the aerosol type product. The residual air in the area is injected into the external space area.

  Here, it goes without saying that any of the housing covers 5 (1) to 5 (5) is used to inject residual air in the inner space area at the upper end side of the inner container 2 into the outer space area.

  As is well known, in the case of the inner / outer double container aerosol injection mechanism, the valve unit VU of the above (22) after the mounting operation to the inner container 2 is completed, the so-called valve unit The air corresponding to the interior space area of the inevitably remains.

  This residual air layer is jetted into the external space region together with the contents (raw solution) by the jetting operation, causing the jetted contents to scatter.

  The inner / outer double container aerosol injection mechanism consisting of the general-purpose housing shown in the figure is inevitably malignant residual air in the inner space area of the upper end side of the inner container 2, and into the outer passage area A by the initial injection operation after product completion. It has the function of reliably flowing in and discharging to the external space.

  The contents to be injected (stock solution) are stored in the inner container 2, and then the pressurized space region 3 is filled with the gas for injection, and the annular hanging part is pressed while pushing the integrated unit of the valve unit VU and the inner container 2 downward. The final aerosol type product is manufactured by clinching the lower end side of 11b.

  When a known operation button (not shown) of this aerosol type product is in a stationary mode in which the push-down operation is not performed, for example, the stem 6 is biased upward by the elastic action of the coil spring 7 so that the stem hole 6b is substantially omitted. It is closed by a horizontal stem gasket 8.

  At this time, the stem passage portion 6a on the downstream side of the stem hole portion 6b and the inner passage region B on the upstream side thereof are blocked by the stem gasket 8, so that the contents contained in the inner container 2 are the stem passage portion and its It is not sprayed into the external space through the previous operation button passage.

  FIGS. 1 to 3 and FIG. 5 show so-called operation modes when an operation button (not shown) in the stationary mode is pressed, for example.

  In this operation mode, the stem 6 moves downward together with the operation button from the stationary mode position while resisting the elastic force of the coil spring 7, so that the inner free end side of the stem gasket 8 becomes an annular convex portion on the outer peripheral surface of the stem. If pushed, it will be displaced to a “bow” shape.

  Due to the downward movement of the stem 6 and the displacement of the stem gasket 8 to the “bow” shape, the stem hole portion 6b that has been blocked by the stem gasket so far is shifted to the open state. This shift operation itself is well known.

  As a result, the contents to be injected (raw solution) in the inner container 2 that is urged to contract by the action of the injection gas in the pressurized space area 3 are “outer passage area A−inner passage area B−. It is injected into the external space through the stem hole 6b-stem passage 6a-operation button passage (not shown).

  When the user stops pressing the operation button, the stem 6 is moved up by the elastic force of the coil spring 7 to return to the position of the stationary mode, and the stem gasket is also in the stationary mode configuration from the “bow” state to the substantially horizontal state. Return to. This return operation is well known.

  The parts different between the inner and outer double container aerosol injection mechanisms of FIGS. 1 to 3 and 5 are the shapes of the housing covers 5 (1), 5 (2), 5 (3), and 5 (4).

That is, in a state where each housing cover is fitted and attached to the outer peripheral surface of the central upper cylindrical portion 4b of the housing 4,
(41) The housing cover 5 (1) of FIG. 1 has its wide ring-shaped portion 5e abutting against the lower end surface of each of the six vertical plate rib-like portions 4j of the housing 4,
(42) The housing cover 5 (2) of FIG. 2 has its narrow ring-shaped portion 5f abutting against the lower end surfaces of the six vertical plate rib portions 4j of the housing 4,
(43) In the housing cover 5 (3) of FIGS. 3 and 4, the radial stepped pieces 5g are individually separated from the upper end side space area (inner container) next to the vertical plate rib-like portion 4j of the housing 4. 2 and the bottom surface 5n of the vertically cut-out portion comes into contact with the bottom surface of the vertical plate rib-like portion 4j,
(44) The housing cover 5 (4) of FIGS. 5 and 6 has a mortar-shaped piece portion 5k, which is individually located at the upper end side space area (the inner container 2 of the inner container 2) next to the vertical plate rib-shaped portion 4j. The upper end side internal space region), and the vertical notch bottom surface 5n abuts the lower end surface of the vertical rib portion 4j.
Each aspect is set.

  Among these housing covers 5 (1), 5 (2), 5 (3), 5 (4), the entrance portion of the outer passage area A when the housing covers 5 (3), 5 (4) are used. The (inflow part) is an upper end side internal space area composed of the inner container 2 and the housing 4 and is set between the adjacent vertical plate rib-like parts 4j.

  Thus, in the case of the housing covers 5 (3) and 5 (4), the radial stepped piece 5g or the mortar-shaped piece 5k constituting the inlet portion of the outer passage area A is the adjacent vertical plate rib-like portion. 4j is set individually.

  For this reason, when the valve unit VU is attached to the inner container 2 after the injection target content (stock solution) has been injected, the air layer generated in each of the inner space areas on the upper end side between adjacent vertical plate rib-like portions 4j is more reliable. Into the outer passage area A.

  That is, in the case of the housing covers 5 (3) and 5 (4), the air existing between the ribs of the vertical plate of the inner container 2 after the valve unit VU is attached is used as an individual inflow portion (inlet). It is more reliably injected from the outer passage area A to the outer space area through the inner passage area B and the stem passage portion 6a.

  The housing cover 5 (5) of FIG. 7 guides the vertical plate rib-like portion 4j to the entrance side of the vertical notch-like portion 5m of the housing cover 5 (4) of FIGS. For this purpose, a tapered guide portion 5p is provided. When the housing cover 5 (5) is attached to the housing 4, the tapered guide portion 5p is formed into a vertical plate rib shape even if the vertical plate rib-shaped portion 4j and the circumferential center portion of the vertical notch-shaped portion 5m are greatly displaced. Since the portion 4j is guided and aligned with the central portion in the circumferential direction, it can be easily mounted. If the tapered guide portion 5p is provided large, a gap is formed between the longitudinal plate rib-like portion 4j and the inflow portion (inlet) of the outer passage area A is lowered. Therefore, the height of the tapered guide portion 5p is It is desirable that the depth is about 1/2 to 1/3 of the entire depth of the vertical notch 5m including the tapered guide.

Regarding the housing 4 and the like common to the housing covers 5 (1) to 5 (5),
(51) The outer cylindrical part 4a, the central upper cylindrical part 4b, the ring ceiling part 4c and the central lower cylindrical part 4d constituting the housing 4 are integrally formed of plastic,
(52) The vertical plate rib-like portion 4j for increasing the strength is integrally formed between the outer tubular portion 4a and the central upper tubular portion 4b,
(53) The formation direction of the vertical plate rib-like portion 4j is the radial direction of each of the outer cylindrical portion 4a and the central upper cylindrical portion 4b,
(54) An outer vertical groove portion 4h is formed on the outer peripheral surface side (back side) of each portion of the central upper cylindrical portion 4b where the inner vertical groove portion 4g is not provided. Reduce the thickness of the part itself,
(55) The vertical rib portion 4j is formed by forming the inner peripheral surface of the outer cylindrical portion 4a and the outer peripheral surface portion of the inner vertical groove portion 4g of the upper central cylindrical portion 4b (= the outer vertical groove portion 4h). Is formed between the outer cylindrical portion inner peripheral surface than the outer longitudinal groove-shaped portion),
(56) An intermediate cover body 10 made of plastic and disposed on the upper surface of the stem gasket 8 is held by the upper and outer step portions 4n formed on the center upper tubular portion side of the ring ceiling portion 4c,
(57) The outer peripheral surface of the outer cylindrical portion 4a is protected by a three-layer member including an inner upper end side annular portion 2a, an outer upper end side annular portion 1a, and an annular hanging portion 11b.

  That is, as in the above (51), (52), (53), the entire housing is integrated in such a manner that the vertical plate rib portion 4j is disposed between the outer cylindrical portion 4a and the central upper cylindrical portion 4b. By molding, the strength of the housing 4 having a size that also has a conventional mounting cup function is increased.

  The thickness of the other parts of the housing 4 (the outer cylindrical part 4a, the central upper cylindrical part 4b, the ring ceiling part 4c, etc.) is reduced as much as possible by the action of increasing the strength of the vertical plate rib-like part 4j. The total amount of resin required for the integral molding is reduced.

  Further, as in the above (54) and (55), the thickness of the portion of the central upper tubular portion 4b where the inner longitudinal groove portion 4g does not exist is reduced, or the radial length of the longitudinal plate rib portion 4j. In the same manner, the total amount of resin required for the integral molding of the housing 4 is also reduced.

  Further, as shown in the above (56), by holding the plastic intermediate cover body 10 on the upper surface of the stem gasket 8 by the upper and outer step portions 4n of the housing 4, the injection target container accommodated in the inner container 2 is obtained. The entire area where the (stock solution) can come into contact is made metal-free.

  If the intermediate cover body 10 is omitted, the content of the stem stems due to seal leakage at the contact portion between the lower inner step 4m of the housing 4 and the stem gasket 8, the permeability of the injected content itself or the pressure of the injected gas. The gasket 8 may penetrate and permeate.

  At this time, the contents to be sprayed in the inner container 2 may come into contact with the metal cover cap 11 to cause deterioration, deformation, or modification of the contents themselves.

  The contact parts of the contents to be injected contained in the inner container 2 are the inner container 2, the housing 4, the housing covers 5 (1) to 5 (5), the stem 6, the coil spring 7, the stem gasket 8, and the housing gasket 9. And an intermediate cover body 10. All of these can be set as non-metallic components.

  Further, as described in the above (57), the outer surface of the outer cylindrical portion 4a of the housing 4 is covered with the three-layer mode of the inner upper end side annular portion 2a, the outer upper end side annular portion 1a and the annular hanging portion 11b. Yes.

  Thereby, in combination with the reinforcing action of the vertical plate rib-like portion 4j, for example, the housing 4 is prevented from being deformed / damaged against an impact on the annular hanging portion. The impact is a force that is pushed downward vertically when the lower end side of the annular hanging portion 11b of the cover cap 11 is clinched to fix the housing mechanism to the outer container 1, or a force that is applied inward by the clinching.

In addition, of course, this invention is not limited to the content of illustration, for example,
(61) A tapered guide portion 5p similar to the housing cover 5 (5) is provided on the upper portion of the vertical notch 5m of the housing cover 5 (3).
(62) The housing 4 is set as a component of a conventional mounting cup and a housing portion attached thereto.
(63) The vertical plate rib portion 4j of the housing 4 is omitted,
(64) Various operation buttons such as a push-down type and a tilting type (spout type) are used as the operation unit for driving the stem 6.
(65) The number, thickness, shape, etc. of the vertical plate rib-like portion 4j are arbitrarily set.
(66) Discarding the purpose of the metal-less, using a metal coil spring instead of a plastic coil spring,
You may do it.

  The contents to be ejected include various properties such as liquid, foam (foam), cream, paste, gel, and powder.

  Aerosol products to which the present invention is applied include hair care products such as hair dyes, hair styling agents, hair treatment agents, skin care products such as sunscreens, lotions, cleansing, antiperspirants, shavings, insect repellents, There are various uses such as.

  The injection target contents contained in the container main body are, for example, a powdery substance, an oil component, an alcohol, a surfactant, a polymer compound, an active ingredient according to each application, and the like.

  As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, magnesium chloride, silica, zinc oxide, titanium oxide, zeolite, nylon powder, and a mixture thereof are used.

  Oil components include silicone oils such as dimethylpolysiloxane, ester oils such as isopropyl myristate, oils and fats such as palm oil, eucalyptus oil, camellia oil, olive oil and jojoba oil, hydrocarbon oils such as liquid paraffin, myristic acid and palmitic acid. Fatty acids such as acid, stearic acid, linoleic acid and linolenic acid are used.

  As alcohols, monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol and cetanol, and polyhydric alcohols such as 1,3-butylene glycol and glycerin are used.

  Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene alkyl ethers and polyglycerin fatty acid esters, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and alkyl chlorides. A cationic surfactant such as trimethylammonium is used.

  As the polymer compound, hydroxyethyl cellulose, methyl cellulose, gelatin, starch, casein and the like are used.

  Active ingredients for each application include dyes such as paraphenylenediamine and aminophenol, oxidizing agents such as hydrogen peroxide, setting agents such as acrylic resins and waxes, and ultraviolet light such as 2-ethylhexyl paramethoxycinnamate. Absorbents, vitamins such as retinol and dl-α-tocopherol, moisturizers such as hyaluronic acid, refreshing agents such as camphor and menthol, antiperspirants such as zinc paraphenolsulfonate, pest repellents such as diethyl toluamide, Etc. are used.

  Furthermore, suspending agents, emulsifiers, antioxidants, sequestering agents and the like other than the above contents can also be used.

  As the injection gas, a compressed gas such as carbon dioxide, nitrogen gas, compressed air, nitrous oxide, or a mixed gas thereof, or a liquefied gas such as liquefied petroleum gas, dimethyl ether, or hydrofluoroolefin is used.

A: Outer passage area (upstream passage area)
B: Inner passage area (downstream passage area)

1: Upper outer rigid container 1a: Outer upper end side annular part 1b: Middle ring dent part 2: Upper open flexible bag-like inner container 2a: Inner upper end side annular part 2b: Inner ring dent part 2c : Bellows-shaped part 3: Pressurized space area

4: Housing 4a: Outer cylindrical part 4b: Center upper cylindrical part 4c: Ring ceiling part 4d: Center lower cylindrical part 4e: Annular downward step part 4f: Outer ring concave part 4g: Inner longitudinal groove part (inner side Part of passage area B)
4h: Outside longitudinal groove portion (a part of the outside passage area A)
4j: Vertical plate rib portion 4k: Vertical hole portion 4m: Lower annular inner step portion 4n: Upper annular outer step portion 4p: Ring-shaped portion

5 (1): Housing cover (Fig. 1)
5 (2): Housing cover (Fig. 2)
5 (3): Housing cover (Figs. 3 and 4)
5 (4): Housing cover (Figs. 5 and 6)
5 (5): Housing cover (Fig. 7)
5a: Small-diameter bottomed cylindrical portion 5b: Swelled portion 5c: Large-diameter cover upper cylindrical portion 5d: An annular upward stepped portion 5e: Wide ring-shaped flange portion (FIG. 1)
5f: Narrow ring-shaped part (FIG. 2)
5g: radial stepped piece (Figs. 3 and 4)
5h: Lower surface annular portion 5j: Upper surface annular portion 5k: Mortar-shaped piece (FIGS. 5 to 7)
5m: Vertical notch 5n: Vertical notch bottom 5p: Tapered guide (FIG. 7)

6: Stem 6a: Stem passage portion 6b: Stem hole 6c: Inner ring concave portion 7: Coil spring 8: Ring-shaped stem gasket 9: Ring-shaped housing gasket

10: annular intermediate cover
11: Cover cap
11a: Upper ring concave part
11b: Annular hanging part
11c: outer ring dent

Claims (5)

By the action of the gas for injection filled in the space region between the outer container of the upper opening and the upper opening which is disposed inside and accommodates the contents to be injected and the inner container of the flexible bag shape In the inner and outer double container aerosol injection mechanism in which is injected into the external space area,
A valve action unit that interlocks with the injection operation of the contents;
A housing that accommodates the valve action portion and is attached to a portion of the upper opening of the inner container to set an upward inner passage area of the contents;
An upper passage is provided in a shape surrounding the lower side of the housing, and forms an outer passage area between the upper end side of the inner space of the inner container and the inner passage area from the upper end side to the inner passage area. An opening housing cover,
The contents injected into the external space area are
After the outer passage area is moved downward from the upper end side, the inner passage area on the downstream side is moved upward to pass through the valve action portion.
An inner and outer double container aerosol injection mechanism characterized by that. The housing is
A central cylindrical portion for accommodating the valve action portion;
An outer cylindrical portion disposed on the outer side of the central cylindrical portion and engaged with the inner peripheral surface of the upper end side of the inner container;
A plurality of vertical plate rib-shaped portions set between the outer peripheral surface of the central cylindrical portion and the inner peripheral surface of the outer cylindrical portion;
The housing cover is
The upper end side piece portion in the circumferential direction, which enters each upper end side internal space region set between adjacent to the vertical plate rib-shaped portions and acts as an inlet portion of the outer passage region,
2. The inner and outer double container aerosol injection mechanism according to claim 1, wherein The vertical plate rib-shaped portion is
It is set between the outer peripheral surface of the central cylindrical part and the convex part where the groove part for content passage is not formed, and the inner peripheral surface of the outer cylindrical part,
The inner and outer double container aerosol injection mechanism according to claim 2. The housing is
It has a lower cylindrical part to which a tube for inflow of contents can be attached,
The inner and outer double container aerosol injection mechanism according to any one of claims 1 to 3. The inner and outer double container aerosol injection mechanism according to any one of claims 1 to 4 is provided, the contents are stored in the inner container, and the gas for injection is filled in the space area.
Aerosol type product characterized by that.

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