CA1083541A

CA1083541A - Construction for supporting atomizing means of manually operable atomizer

Info

Publication number: CA1083541A
Application number: CA309,472A
Authority: CA
Inventors: Tadao Saito; Shigeo Iizuka; Takaharu Tasaki
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1977-08-20
Filing date: 1978-08-16
Publication date: 1980-08-12
Also published as: FR2400392A1; NL177899B; CH632464A5; AU505534B1; DE2834709C2; GB2003974A; DE2834709A1; NL177899C; FR2400392B1; IT1098037B; US4216883A; GB2003974B; IT7826764A0; NL7807765A

Abstract

ABSTRACT OF THE DISCLOSURE
In a manually operable atomizer wherein a piston is operated by an atomizing head, so as to cause a pumping action to suck up the liquid from a liquid container and then pressurize the liquid to atomize the same through a nozzle, a flange is provided to extend outwardly from the wall of a cylinder of the atomizing means. The flange is provided with a circumferential up-right protrusion and an annular recess formed at the radially inner side of the circumferential upright protrusion. A supporting member for supporting the atomizing means is adapted to be attached to the neck opening of the liquid container, and is provided with an annular inner wall adapted to be fittingly received by the annular recess of the flange, an intermediate wall adapted to hold the circumferential upright protrusion of the flange and an annular outer wall for stabilizing the attaching of the supporting member.

Description

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The present invention relates to a construction for supporting the atomizing means of a manually operable atomizer and, more particularly, to a construction capable of stably holding the atomizing means.
Conventionally, for securing the atomizing means to a liquid con-tainer, the atomizing means is placed such tha* an outwardly extending flange formed on the cylinder thereof rests on the neck opening rim of the container and then a holding sleeve is placed so as to clamp the flange against the neck opening rim of the container.
According to this arrangement, the diameter of the neck opening of the container is preferably small, because a depression of the a~omizing head to cause pumping imparts a large force on the flange, so as to deflect the latter downwardly. Thus, when the diameter of the neck opening is large, the support of the atomizing means is rendered unstable, so as to hinder the smooth depression of the atomizing head, and shortly causes a leakage of the liquid through the mounting portion of the atomizing means.
However~ in case of so-called reversible atomizers, adapted to be used in both upright and upside-down positions, the diameter of the stem por-tion has to be large because it has to accomodate two liquid suction pipes, one ascending and one descending, so that the diameter of the neck opening -cannot be made small.
Consequently, from the viewpoint of structure and installation of the atomizing means, it has been desired to make the diameter of the neck opening of the container as large as possible, while overcoming the afore-mentioned drawbacks of the prior art.
Conventionally, the liquid containers are made of plastics. However, for facilitating the plating or printing on the surface of the container, the "~" 1 ' ' ~ ' . .

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container is preferably made of a metal, because me~al allows easier plating and printing than the plastics. However, as compared with plas~ics, metal makes it difficult to form in the neck opening a thread for holding the atom-izing means. This gives rise to a demand for a supporting means which can support the atomizing means stably on the liquid container, even when the latter is made of metal.
According to the present invention there is provided in a manually operable atomizer having an atomizing means supported by the neck opening portion of a liquid container and adapted to perform an atomizing action, a pressurizing chamber constituted by a cylinder and a piston included by said atomizing means and adapted to perform a pumping action, an atomizing head by means of which said piston is depressed to perform said pumping action and a nozzle through which the pressurized liquid in said pressurizing chamber is atomized; a construction for supporting said atomizing means comprising: a flange extending outwardly from an upper portion of said cylinder; a support-ing member adapted to support said atomizing means through the medium of said flange, said supporting member having retaining means for engaging the edge of said neck opening portion of said container; a first annular wall project-ed from said supporting member; an annular recess formed in said flange adapt-ed to fittingly receive said first annular wall; and a second annular wall projected from said supporting member surrounding said first annular wall, said second annular wall being provided in its lower outer peripheral surface with a first retaining section as said retaining means, the portion of said flange around said annular recess being turned to form a circumferential up-right protrusion provided in its lower portion with a second retaining section, said second annular wall having in its lower inner peripheral surface a third retaining section adapted for engagement with said second retaining section.
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~ 33S41 of the present invention:
Figure lA is a sectional view of a manually operable atomizer;
Figure lB is a sectional view of a part of a modification of the supporting construction of Figure lA;
Figure 2 is a schematic sectional view of an atomizing means;
Figure 3 is a sectional view of a second embodiment of manually operable atomizer;
Figure 4 is a plan view of the atomizer shown in Figure 3;
Figure 5 is an enlarged view of a part of the atomizer as shown in Figure 3;
Figure 6 is a sectional view of a third embodiment of manually operable atomizer; and Figure 7 is a sectional view of a part of a fourth embodiment of the atomizer.
Referring first to Figures lAJ lB and 2 showing a first embodiment of support for the atomizing means, a liquid container 1J made of metalJ has a bottom wall 2, barrel portion 3, tapered shoulder portion 4 and a neck open-ing S of a smaller diameter than the barrel portion. These parts are arranged in the order mentioned from the bottom to the top of the container 1.

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The upper end edge of the container, around the neck opening, is rolled to form a circumferential rim 6 having a circular cross-section. Between the rim 6 and the shoulder portion 4, is a circumferential recess 7.
The atomizing means 8 has a lower portion received by the con-tainer 1 through the neck opening 5, while the upper portion of the atomizing means 8 is supported by and held on the rim 6 around neck opening 5, through a medium of a supporting member 24 to be described in the following.
The atomizing means 8 in this embodiment is described as having two pressurizing chambers of different diameters, i~eO a small-diameter pressurizing chamber and a large-diameter pressurizing chamber. This is not necessary, however and an atomizing means having only one pressurizing cham-ber could equally be used.
The atomizing means 8 of this embodiment has a first pressurizing chamber section constituted by a small-diameter 9 and a small-diameter piston 10, as well as a second pressurizing chamber section constituted by a large-diameter cylinder ll and a large-diameter piston 120 The first and second pressurizing chamber sections are in communication with each other through a tubular plunger 13, and in combination form a pressurizing chamber 14.
As an atomizing head 15 is depressed, overcoming the force of a spring 16, liquid in the pressurizing chamber 14 is pressurized and forcibly opens the atomizing valve 17, so as to be sprayed through a nozzle 18 mounted in the atomizing head 150 As the atomizing head 15 is released from the de-pressing force, the small-diameter piston 10 and the large-diameter piston 12 are returned to their original positions by the force of the spring 16, so that the liquid is sucked up, from the container 1 into the pressurizing cham-- - - , , . , :. , .
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ber 14 through a suction pipe 19 which leads to a suction port of the pressur-izing chamber 14.
If the atomizer is a reYersible one which can be used both upright and upside-down, another suction pipe 20a as illustrated by the ghost line in Figure lA or a three-way valve is installed. In such a case, the lower por-tion of the atomizing means 8 inevitably has a large diameter, so that the neck opening 5 has to have a correspondingly large diameter. In this arrange-ment~ it is a critical requisite to stably support the atomizing means.
A flange 21 is formed at the upper end of the small-diameter cylin~
der 9 of the atomizing means 8, so as to extend laterally from the latter.
me flange 21 is turned to provide an outermost circumferential upright pro-trusion 22 which defines, at its inner side wall, an annular recess 23. A
retaining surface 22a is formed in the lower portion of the outer peripheral surface of the upright protrusion 22.
The supporting member for supporting the atomizing means ~ is placed on the neck opening 5. The supporting member 24 is provided with an annular inner wall 25, an annular intermediate wall 26 and an annular outer wall 27.
The inner peripheral wall 25 is closely fitted into the annular recess 23 ~of the flange 21, while the upright c1rcumferential protrusion 22 of the flange 21 is closely received by the recess formed between the inner wall 25 and the intermediate wall 26. In this condition, the retaining surface 22a of the upright circumferential protrusion 22 is engaged and retained by an annular retaining portion 28 formed at the inner lower part of the interme- ~;
diate wall 26.
Further, a protrusion 29 formed at the inside of the upright cir-cumferential protrusio~ 22 abuts the annular inner wall 25, so that the flange , : ` ~ ; ,-, . : i .

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21 is rigidly connected to the supporting member 24.
The supporting member 24 is stably held on the neck opening 5 because the circumferential rim 6 of the neck opening is closel;~ received in the annular recess formed between the intermediate and outer annular walls 26, 27. The supporting member 24 is strongly secured in the neck opening 5, due to an engagement of an annular retaining section 30 formed at the outer lower part of the intermediate wall 26 with the inner lower part of the cir-cumferential rim 6, and due to an engagement of an annular retaining section 31 formed at the inner lower part of the annular outer wall 27 with the outer lower part of the circumferential rim 6.
An ~'0" ring is disposed between the,circumferential rim 6 and the base of the intermediate wall 26, so as to maintain a liquidtight seal at thel!joint surfaces of the supporting member 24 and the rln~6S~
The upper part of the atomizing means 8 projects up~ardly through the central bore 33 of the supporting member 24, and the large-diameter cylinder l1 of the atomizing means 8 is slidably held by a holding sleeve 34 which projects upwardly from the periphery of the central bore 33. The hold-ing sleeve 34 is provided at its upper portion with a step 35 adapted to abut the projection formed at the lower end of the large-diameter cylinder 11, thereby to limit the upward movement of the large-diameter cylinder 11. An outer sleeve 36 rises from the~portion of the upper surface of the supporting member 24 around the holding sleeve 34, and is detachably engaged by the base portion of a cap 37 which covers the atomizing head 15.
Figure lB shows a modification of the construction for supporting the atomizing means. In this modification, an annular groove 25b is pro-vided in the supporting member 24, in place of the inner annular wall 25, . , , : , ~ : . : . , , ~ -- .- : :: .

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~L~J18~S41 while a circumferential wall 25b adapted to be received by the annular groove 23b is formed on the flange 21.
That is, in this modification, the annular recess 23 and the ir,ner annular wall 25 of the embodiment as shown in Figure 1 are reversed. At the same time, the upright circumferential protrusion 22b of the flange 21 pro-jects downward, such that the retaining surface 22a is engaged and retained by the annular retaining section 28 of the intermediate wall 26. Further, the upper part of the circumferential wall 25b is formed as a projecting re-taining portion, and the circumferential wall 25b engages a retaining portion formed in the annular recess 23, so that the atomizing means 8 is supported -in quite a stable manner.
The above stated constructions for supporting the atomizing means 8 allow the diameter of the flange 21 for supporting the atomizing means 8 to be diminished, even when the neck opening 5 of the liquid container 1 has a large diameter. Since this flange 21 is held 1n the neck opening 5 of the container 1 through the medium of the supporting member 24, the atomizing means 8 is stably held even when the diameter of the neck opening 5 is large, and, at the same time, a smooth operation of the atomizing head 15 is en-sured. Further, no leakage of the liquid is caused, because the flange 21 is never moved.
In addition, the atomizing means 8 can easily be attached to the container 1 by simply bringing the upright circumferential protrusion 22 or the annular recess 23 of the flange 21 into engagement with the cooperating annular inner wall 25 or the intermediate wall 26 of the supporting member 2~.
Thus, the atomizing means 8 is attached quite easily and secured in quite a stable manneF.

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For refilling the liquid container 1 with new liquid, the inter-mediate wall 26 or the annular outer wall 27 of the supporting member 24 is simply disengaged from the circumferential rim ~ of the neck opening 5. A~ter refilling the container 1, the supporting member 24 is again secured to the container 1, by simply pressing the same onto the circumferential rim 6 of the container 1.
Since the liquid container 1 is made of a metal~ the outer edge of the neck opening 5 can easily be rolled to form rim 6, so as to afford an easy engagement of the neck with the retaining portion of the supporting mem-ber.
Further, the metallic material of the liquid container can easily be painted upon, so that the atomizer of the invention can have an appearance s`imilar to that of an ordinary aerosol type atomizer having a liquid container made of metal.
He~einafter, a second embodiment of the invention will be described with specific reference to Figures 3 to 5. In this embodiment, the supporting member 24 and the cap of the first embodiment are made as one, so as to form a supporting member 50. The flange 21 of the atomizing means 8 has, like that of the first embodiment, a circumferential upright protrusion 22 and an annu-lar recess 23~ However, the retaining section 22b of the circumferential upright protrusion 22 is formed on its mi~d portion.
As in the first embodiment, the supporting member 50 has an annular i}mer wall 51, intermediate wall 52 and an outer wall 53. However, in this embodiment, the intermediate wall 52 has an inner section 52a and an outer section 52b with an intermediate re~ess 54 formed therebetween for reducing the weight. At the same time, the intermediate wall 52 is extended upwardly, . :

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so as to ~orm a cap portion 55 which covers the atomizing head 15.
The annular inner wall 51 is provided on its outer peripheral sur-face with an annular protrusion 56 for closely contacting the circumferential upright protrusion 22. ~n annular retaining section 57 is formed on the inner peripheral surface of the inner section 52a~ for engagement with the retaining section 22b. Further, an amlular retaining section 58 for engaging the rim 6 of the neck opening S is formed on the outer peripheral surface of the outer section 52b. At the same time, the lower part of the outer periphery of the outer section 52b is tapered as at 59, so as to facilitate the attaching of the supporting member 50 to the neck o~ the container. The outer wall 53 is positioned apart from the rim 6 of the neck opening 5, and abuts at its lower end the shoulder portion 4 of the container 1, thereby to stabilize the sup-porting member 50 on the container 1.
The aforementioned cap portion 55 is provided at its portion con-fronting the nozzle 18 of the atomizer head 15 with a window 60, as well as recess 61 which permits the depression of the atomizing head 15. Further~ a vertical rib 62 is formed on the atomizing head 15, while a guide groove for slidingly guiding the rib 62 is formed in the inner peripheral wall 52 at the upper part of the latter~ so as to prevent the atomizing head 15 from rotatingg so as to keep phe window 60 in alignment with the nozzle 180 Needless to say, the arrangement of the guiding groove 63 and the rib 62 may be reversed.
Other portions of this emboidment than described above are identi-cal to those of the first embodiment. Thus~ the atomizing means 8 is stably held by the supporting member 50 in quite a stable manner. Also, the attach-ing of the atomizing head to the liquid container can be made quite easily . . .
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Figure 6 shows a third embodiment of the invention. In this em-bodiment, briefly, a liquid container 70 made of a plas~ic is substituted for the liquid container of the second embodiment. The neck opening section 71 has a cylindrical shape with a straight generating line. An annular auxiliary member 72 made of a plastic is secured to the neck opening section 71, so as to partially cover the inner and outer peripheral surfaces of the neck opening section 71. The auxiliary member 72 has a step 73 which firmly engages the step of the neck opening portion 71. An annular retaining section 74 is formed on the inner peripheral wall of the auxiliary member 720 This annular retaining section 74 is adapted to engage the annular retaining section 58 of the intermediate wall 52 of the supporting member 50. The outer wall 53 con-tacts, at its lower inner peripheral surface, the outer peripheral wall ~çthe auxiliary member 72, thereby to stably hold the supporting member 500 The auxiliary member 72 is further provided at its upper part with an annular protlrusion 76 adapted for engagement with the retaining seotion 75 of the in-termediate wall 52.
Other parts than mentioned above are identical to those of the second embodiment. Thus, the atomizing means can be stably supported on the ; liquid container 70, even when the latter is made of a plastic~ by an incor-poration of an auxiliary member 72.
Figure 7 shows a fourth embodiment of the invention. In this em-bodiment~ the liquid container is made of a plastic, as is the case of the third embodi~ent. Further~ the outer periphery of the neck opening portion i 80 is threaded as at 810 The supporting member 80 has an annular inner wall 83, an inter-_9_ . . .. .. .. , . . . . ,.. . . .. .. .. .. . - , .
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mediate wall 84 and an annular outer wall 85. A thread 86 for engaging the thread 81 of the neck opening portion is formed in the i.nner peripheral wall of the outer annular wall 85. The flange 21 of the atomi~ing means 8 is secured to the supporting member 82, with its circumferential upright pro-trusion 22 or the annular recess 23 fittingly engaged by the inner annular wall 83 or the intermediate wall 84 of the supporting member 82. The lower surface of the flange 2t abuts the upper end edge of the neck through the medium of a sealing member 87.
Consequently, the supporting member 82 is rigidly connected to the container, through a screwing engagement of the thread 86 with the thread 81 of the neck opening portion, and the flange 21 is stab].y held also by the neck portion 80, so as to further stabilize the support of the atomizing means 8.
The aforementioned modificati~.n as shown in Figure lB can equally be applied to the second to fourth embodiments, as well as to the first embodiment, . . , . ~ .. .. .
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Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. In a manually operable atomizer having an atomizing means supported by the neck opening portion of a liquid container and adapted to perform an atomizing action, a pressurizing chamber constituted by a cylinder and a piston included by said atomizing means and adapted to perform a pumping action, an atomizing head by means of which said piston is depressed to perform said pumping action and a nozzle through which the pressurized liquid in said pressurizing chamber is atomized; a construction for supporting said atomizing means comprising: a flange extending outwardly from an upper por-tion of said cylinder; a supporting member adapted to support said atomizing means through the medium of said flange, said supporting member having retain-ing means for engaging the edge of said neck opening portion of said container;
a first annular wall projected from said supporting member; an annular recess formed in said flange adapted to fittingly receive said first annular wall;
and a second annular wall projected from said supporting member surrounding said first annular wall, said second annular wall being provided in its lower outer peripheral surface with a first retaining section as said retaining means, the portion of said flange around said annular recess being turned to form a circumferential upright protrusion provided in its lower portion with a second retaining section, said second annular wall having in its lower inner peripheral surface a third retaining section adapted for engagement with said second retaining section.

2. A construction for supporting atomizing means as claimed in claim 1, wherein the lower portion of the outer periphery of said second annular wall is tapered, so as to facilitate the attaching of said supporting member to said liquid container.

3. A construction for supporting atomizing means as claimed in claim 1, wherein: a third annular wall is projected from said supporting member so as to surround said second annular wall; and said liquid container is made of a metal, the edge of said neck opening portion being curled to form a brim adapted to engage a fourth retaining section formed at a lower portion of said third annular wall.

4. A construction for supporting atomizing means as claimed in claim 1, characterized by further comprising a guide sleeve disposed above said first annular wall for guiding the upward and downward movement of said atomizing head.

5. A construction for supporting atomizing means as claimed in claim 1, further comprising: an auxiliary member adapted to be fitted to said neck opening portion of said liquid container so as to cover the inner and outer peripheral surfaces of said neck opening portion, said auxiliary member having a fifth retaining portion adapted to engage said first retaining section of said second annular wall projected from said supporting member so as to surround said second annular wall, said third annular wall being provided with an abutting surface adapted to abut the lower outer peripheral portion of said auxiliary member.

6. A construction for supporting atomizing means as claimed in claim 1, characterized by further comprising a cap secured to said supporting member and adapted to cover said atomizing head, said cap having a notched part for allowing the depression of said atomizing head and a window confronting said nozzle, wherein one of said atomizing head and said supporting member has a linear protrusion, while the other has a guide groove for slidingly guiding the movement of said linear protrusion, so as to hold the nozzle of said atom-izing head and said window of said cap in alignment with each other.

7. A construction for supporting atomizing means as claimed in claim 1, wherein: said container is made of a plastic, said neck opening portion being threaded at its outer peripheral surface; a third annular wall is projected from said supporting member so as to surround said second annular wall; said third annular wall of said supporting member having a thread for screwing engagement with the thread of said neck opening portion; said flange being adapted to be placed on the upper end of said neck opening portion.