KR101645651B1 - Inner container for actuator with dual container structure - Google Patents

Abstract

The present invention relates to an inner container of a jetting device having a dual container structure and is coupled to an injection device having an outer container filled with a compressed gas and a mountain cup coupled to seal the outer container inlet of the outer container, An inner container disposed under the mountain cup inside a container, comprising: a valve housing coupled to a cap portion bent at a center of the mountain cup; And an inner container coupled to a lower portion of the housing of the valve housing and filled with the contents to be injected, wherein the inner container inlet of the inner container and the lower portion of the housing of the valve housing are screwed, twisted, Or < / RTI >

Description

[0001] INNER CONTAINER FOR ACTUATOR WITH DUAL CONTAINER STRUCTURE [0002]

The present invention relates to an internal container of an injection device having a dual container structure, and more particularly, to an internal container of an internal container which is capable of refilling the contents which can be injected with a compressed gas (for example, air or nitrogen) To an inner container of an injection device having a double container structure which is visible from the outside of the outer container.

Conventional spray products, such as aerosol canisters and mist sprayers, typically use a spray gun, a filler gas such as liquefied natural gas (LNG) for the human body, liquefied petroleum gas (LPG) or DME (dimethyl ether) It is a device that injects the contents inside the product container (for example, liquid or mucilage cosmetics).

These spray products can be used simply by pushing the button connected to the upper part of the product once by discharging a certain amount of contents.

The patent documents which are the background of the invention include the fact that the spraying agent itself is a gas which destroys the atmospheric environment or the ozone layer or that the inner container itself filling the contents is not recyclable and thus is not environmentally friendly and the content can not be visually confirmed A dual structure injection vessel is disclosed.

Patent literature as the background of the invention discloses that unlike the conventional aerosol technology in which the filling gas is mixed with the ingredient material in general, the use of the compressed air as the spraying agent or the propellant causes a pure natural product and a harmless human- . These patent documents can be eco-friendly spray products with no carbon emissions and no risk of fire or explosion with compressed air charging.

However, in the double structure injection container of the patent document, the sealing engagement portion is made of a metal material, and the inner container is made of a recyclable plastic material. Such metal materials and plastic materials are releasing materials, and the bonding force between the releasing materials is relatively weak due to heat shrinkage or thermal expansion difference.

For example, in order to increase the productivity in the manufacturing step, a very high pressure load can be instantaneously applied to the inner container inlet since the raw material or the raw liquid contents are injected into the inner container at a pressure of 20 to 40 kgf / cm 2. Such a conventional dual structure injection vessel has a product defect that may cause the components around the spring to break down due to an instantaneous pressure load, or it is very difficult to maintain a reliable sealing state due to a gap due to a difference in thermal expansion between materials, It can have a high defect rate.

In addition, although the conventional dual structure injection container is intended to be recycled through recharging of contents, compressed air filled as a spraying agent or a propellant has problems such as difficulty in maintaining the sealed state or maintaining the accuracy of assembly, and pressure drop in recycling .

In addition, in the conventional dual structure injection container, the inner container inlet is directly coupled to the sealing engagement portion in a state in which it is integrally formed with the inner container, and the sealing engagement portion is coupled to the outer container inlet.

Particularly, since the inner container inlet itself serves as a valve housing, the inner parts of the valve (for example, a stem corresponding to a spring, a valve for opening and closing a valve) are coupled directly to the inner surface of the inner container inlet, It is very difficult.

Further, the inner container inlet itself has a problem that it is damaged by an instantaneous pressure load when the contents are injected. That is, in order to solve such a problem, when the inner container inlet itself is made very thick and durable, or when it is made of a durable plastic material, it affects the elastic deformation of the wrinkles integrally formed with the inner container inlet, The performance may be deteriorated when it is filled into the interior of the container or when the contents are discharged to the outside. Such deterioration in performance may lead to deterioration of product performance due to an increase in the residual amount or residual amount in the inner container.

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Korean Patent No. 10-1320000 (Oct. 14, 2013) Korean Patent No. 10-1324530 (November 1, 2013)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a valve housing and an inner container separately made and coupled to each other, And an inner container of an injection device having a dual container structure capable of maximizing a sealing force by increasing a contact area with respect to a gasket provided between homogenous materials or heterogeneous materials.

According to one aspect of the present invention there is provided a method of operating a compressor, comprising the steps of: combining an outer vessel to which a compressed gas is charged and an injection device having a mountain cup coupled to seal the outer vessel inlet of the outer vessel, And a valve housing coupled to the cap portion bent at the center of the mountain cup. And an inner container coupled to a lower portion of the housing of the valve housing and filled with the contents to be injected, wherein the inner container inlet of the inner container and the lower portion of the housing of the valve housing are screwed, twisted, The inner container of the injection device having the double-walled container structure is provided.

Further, the valve housing may include a housing lower part having a female screw formed on an inner circumferential surface thereof for threaded engagement or twist engagement; A boundary portion integrally covering an upper portion of the lower portion of the housing and having a passage hole at the center thereof; A valve passage portion extending downward from an edge of the passage hole so as to be located inside the inner container inlet; A housing connection part which is formed in a cylindrical wall structure smaller than the lower part of the housing and extends upwardly of the boundary part to form a spring inner wear step; And a cylindrical housing upper portion having a size larger than the housing connection portion and smaller than the lower portion of the housing, and integrally formed with the housing connection portion.

The upper portion of the housing includes an engagement groove extending along an outer circumferential surface of the upper portion of the housing to be engaged with a bent portion formed by caulking a side portion of the cap portion.

The upper portion of the housing may further include a first bead formed on an upper surface of the upper portion of the housing so as to be in close contact with a first gasket positioned inside the cap portion of the mountain cup.

In addition, the first gasket is formed of fluoro elastomers.

The upper portion of the housing may further include a plurality of stem guides extending vertically from the inner circumferential surface of the upper portion of the housing, spaced from each other along the inner circumferential surface, and protruding toward the center of the upper portion of the housing.

The lower portion of the housing may further include a plurality of corner grooves spaced along the inner circumferential surface of the lower portion of the housing from an inner corner of a lower end of the lower portion of the housing.

The inner container may be an inner container body of transparent or opaque plastic material capable of repeated shrinkage or expansion for filling or discharging the contents; An inner container inlet having a male screw coupled to the female screw of the valve housing; A second bead formed on an upper surface of the inner container inlet so as to be in close contact with a second gasket positioned inside the lower portion of the housing; And a nut type reinforcing portion integrally formed between the inner container inlet and the inner container body.

Further, the second gasket is made of a fluorine rubber material.

In addition, the present invention is characterized in that, for ultrasonic welding, a lower portion of the housing is formed with a circumferential surface which is tightly brought into close contact with the inner peripheral surface of the inner container inlet; A housing upper part having a larger diameter than the lower part of the housing and integrally formed above the lower part of the housing; And a fused portion formed between the outer peripheral surface of the lower portion of the housing by the ultrasonic welding and the inner peripheral surface of the inner container inlet.

The present invention also includes a tightening-type metal band or coil-type band for tightening the inner container inlet to the lower portion of the housing of the valve housing by wrapping around the outer circumferential surface of the inner container inlet for bending coupling .

In addition, the valve housing is formed of HDPE (high density polyethylene) or engineering plastic material.

The inner container may be formed of one material selected from the group consisting of polyethylene terephthalate, soft polyethylene, nitrile, butyl, and polychloroprene.

According to an aspect of the present invention, there is provided an internal container of an injection device having a dual container structure, wherein an inner container and a valve housing are separated from each other and then joined to each other, wherein an inner container is formed of a non- By forming the valve housing with a non-metallic material (e.g., HDPE) that is strong enough to withstand the momentary pressure load at the time of injection, there is an advantage that breakage of the valve housing at the time of injecting the contents can be prevented.

Further, since the inner container of the present invention has the integral nut type reinforcement between the inner container inlet and the inner container body, the inner container can be screwed into the valve housing easily, quickly, .

In addition, since the second bead protruding from the upper surface of the inner container inlet is formed, the contact area between the inner container inlet and the second gasket interposed between the inner container inlet and the valve housing increases, A reliable sealing performance can be exhibited even under an applied pressure load.

According to the present invention, since the first bead protruded from the upper surface of the valve housing is formed, the valve housing, which is made of a non-metallic material, can be formed by increasing the contact area between the valve housing and the first gasket interposed between the valve housing and the mountain cup. Despite the difference in thermal expansion of the mountain cup, which is made of metal, it can also exhibit reliable sealing performance.

Further, according to the present invention, since the material of the first gasket or the second gasket is used as fluoro elastomers which are specially used in high-level industrial machines such as defense weapons and artificial satellites, the heat resistance, oil resistance, chemical resistance, Sealing performance corresponding to steam resistance, ozone resistance, weather resistance, compression set warpage resistance, low temperature resistance and gas impermeability can be exhibited.

In addition, the inner container of the present invention is made of a polyethylene terephthalate material having excellent stretchability and a flexible plastic material having excellent flexibility and flexibility [for example, soft polyethylene (polyethylene), nitrile, butyl, or polychloroprene), it is possible to prevent environmental problems from occurring due to the generation of contaminants depending on the remaining amount of the contents.

Further, since the inner container of the present invention is excellent in stretchability or flexibility, when the contents are almost exhausted through the injection device, the remaining amount of the contents can be maintained at less than 1% level and the economic benefit And user product satisfaction can be maximized.

Further, since the inner container of the present invention is made of the above-mentioned material, the inner container can be filled without being greatly restricted by the ingredients of the contents.

Further, since the inner container of the present invention is a transparent or semi-transparent material, the residual amount and contamination can be confirmed, and the contents raw material can be recharged.

Also, the inner container of the present invention is a non-metal material, that is, a plastic material, and its price is relatively low as compared with a metal material, and can be molded in an injection blowing method with almost no defect rate in production.

It is an object of the present invention to provide a bonding structure capable of minimizing the defective rate of the internal container and preventing massive content of the contents and chemical alteration of the contents and capable of mass production, There are advantages.

Furthermore, the present invention can provide a more efficient supply of products that depend on imports to domestic companies by themselves, and can bring about import substitution effect. Moreover, You can contribute.

In addition, the present invention can reduce the burden on the national green environment with no carbon dioxide emission, and can reduce the waste disposal cost due to the recycling of the product.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an inner container of an injection device having a dual container structure according to a first embodiment of the present invention; FIG.
FIG. 2 is an exploded perspective view of the injection device shown in FIG. 1 except for the outer container; FIG.
3 is an exploded cross-sectional view for explaining the engagement relationship between the inner container inlet of the inner container and the first valve housing shown in Fig. 2;
FIGS. 4 to 6 are cross-sectional views for explaining the coupling relationship of the injector shown in FIG. 2. FIG.
FIGS. 7 and 8 are cross-sectional views for explaining the operation of the injector shown in FIG. 2. FIG.
9 is a perspective view of an inner container of an injection device having a dual container structure according to a second embodiment of the present invention.
10 is a cross-sectional view showing a state in which the second valve housing and the inner container shown in FIG. 9 are engaged.
11 is a perspective view of an inner container of an injection device having a dual container structure according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view of an inner container of an injection device having a dual container structure according to a first embodiment of the present invention, and FIG. 2 is an exploded and assembled perspective view of the injection device except for the outer container shown in FIG.

Referring to FIG. 1, the spraying apparatus, which is a spray product according to the first embodiment of the present invention, includes an environmentally friendly raw material or a raw material liquid M in order to simultaneously solve the environmental problems due to the harmfulness of the gas affecting the human body and the discharge of carbon dioxide. The container 100 may be filled and the compressed gas G as a spraying agent or a propellant may be charged between the inner container 100 and the outer container 200. [ At this time, the contents M can be recharged after the exhaustion for recycling of the injection device.

The first embodiment is such that for the purpose of maintaining a reliable sealing state of the compressed gas G filled between the inner container 100 and the outer container 200 when the contents M is charged or when the device is used or recycled for a long period of time, It is possible to provide a technique for preventing breakage of the valve housing 300 when the content M of environmentally-friendly raw material is rapidly filled in the container 100 at a high pressure (e.g., 20 to 40 kgf / cm2 in pressure).

The valve housing 300 and the outer container 200 are formed of a non-metallic material such as a plastic material or an engineering plastic material, while the mountain cup 400 may be made of a metal material.

In particular, since the outer container 200 is made of transparent or opaque plastic material, it can be formed into various shapes. For example, the outer container 200 may be used as a container for a household, and may be used as a cleaning agent, a disinfectant, an insecticide, an air freshener, a fragrance, various antiinflammatory agents for pharmaceutical and medical products, Can be shaped to correspond to the shape and structure of the container of suntan spray, shave cream or gel, hair spray or gel, oil body spray, foam cleaner, lotion, perfume.

Furthermore, the outer container 200 can be made of a variety of materials including lubricants and ink products (e.g., detergents, ink jet sprays), paints and coatings (e.g., various paint sprayers and vehicle anti- Various sauces, various sauces, various kinds of jams, various butter, chocolate, etc.).

Therefore, the shape, size, or structure of the outer container 200 may be various shapes such as a shape of a square tube, a triangular cylinder, a cylinder, a hexagonal cylinder, a cone cylinder, or a pressure vessel, .

Also, in general, the oxygen permeability of a synthetic resin or a plastic material may be proportional to the wall thickness or may vary depending on the kind of the material. In this embodiment, a material having a very low oxygen permeability and optimized for mass production of the injection device is used for the outer container 200, the inner container 100, and the valve housing 300. Also, considering the oxygen permeability, the outer container 200, the inner container 100, and the valve housing 300 may be manufactured to have a wall thickness of 2 to 3 mm, or more than the wall thickness dimensions.

That is, the outer container 200, the inner container 100, and the valve housing 300 may have a very low oxygen permeability as compared with a general plastic container, or may preferably have an oxygen permeability And has an oxygen permeability corresponding to the limit (e.g., 10 ^-3 barrer).

In general, gas permeation tests use the unit "barrer", where 1 barrer can be expressed as 10 ^-10 (cm ³ (STP) · cm / cm ^{2 ·} s · cmHg). For example, PDMS (silicon material has an oxygen permeability of about 10 ³ barrers (oxygen permeability) and plastic beer containers have an oxygen permeability of about 10 ^-3 barrer (oxygen permeability is very small).

In addition, the user can visually identify the contents M of various spray products inside the inner container 100 through the outer container 200.

The opening and closing of the valve of the valve housing 300 can be performed by a pushing operation of the button 500 located above the mountain cup 400 or an in-situ operation by elastic force.

The inner container 100 may have a corrugated or star-shaped cross section as a container structure and may have a wrinkled or shrunk or shrunk shape before the contents M are filled, When it is filled in the interior of the body 100, it can be expanded or expanded to the shape as shown in Fig.

The mountain cup 400 serves to seal the outer container inlet 210 of the outer container 200.

Referring to FIG. 2, the button 500 is associated with a nozzle 510 for spray, which is an insert structure similar or identical to a conventional spray product. In the button 500, a button internal space structure 520 connected to the nozzle 510 is formed. Here, the button inner space structure 520 is coupled through one end (e.g., the upper end) of the inner pipe 530.

The other end (for example, the lower end) of the inner pipe 530 passes through the mountain cup 400 and the first gasket 440 and is fastened to the stem 450 corresponding to the valve opening / closing piston.

The mountain cup 400 can be manufactured by bending a metal plate. At this time, the mountain cup 400 has a cap portion 410 bent at its center.

The cap portion 410 includes a pipe hole 411 located at the center of the mountain cup 400 and an upper surface 412 of the cap portion 410 having the pipe hole 411 formed thereon and an upper surface 412 of the cap portion 410, And a side surface 413 of the cap portion 410 extending downward from the outer periphery of the cap portion 410. Here, the pipe hole 411 may be a space through which the other end of the inner pipe 530 passes, or a space that allows the inner pipe 530 to slide up and down.

The lower end of the side surface 413 of the cap part 410 is bent and connected to the inbound caulking part 420 of the U-shaped cross-sectional shape. The outer upper end of the inbound caulking portion 420 is connected to the outbound caulking portion 430 of the reverse U-shaped wave cross-sectional shape.

The valve housing 300 is coupled to the cap portion 410 of the mountain cup 400.

Inside the valve housing 300, a stem 450 and a spring 460 are coupled. The spring 460 elastically supports the stem 450 in the valve housing 300 toward the bottom of the first gasket 440.

Also, the inner container 100 is disposed under the mountain cup 400 inside the outer container mentioned above with reference to FIG. That is, the inner vessel 100 is coupled to the valve housing 300, and the valve housing 300 is coupled to the mountain cup 400.

The valve housing 300 may be formed of HDPE (high density polyethylene) or an engineering plastic material that is much stronger and durable than the material of the inner container 100 described below.

The inner container 100 may be formed of a polyethylene terephthalate material. The inner container 100 may be made transparent or partially transparent and opaque to allow visible light to pass through.

The use and combination of such a material can easily couple the spring 450 and the spring 460 to the inside of the valve housing 300 and can prevent the valve housing 300 itself from being durable It is possible to have a durability comparable to or similar to that of the mountain cup 400 made of a metal material so that the valve housing 300 is broken by an instantaneous pressure load at the time of injecting the contents in the prior art The problem can be solved.

The inner vessel 100 is engaged with the lower portion 310 of the housing 300 of the valve housing 300 via the second gasket 150.

In the first embodiment, the inner container inlet 130 of the inner container 100 and the lower housing 310 of the valve housing 300 are coupled by screwing or twisting.

In addition, the first gasket 440 and the second gasket 150 are formed of fluoro elastomers. For example, the first gasket 440 and the second gasket 150 may be made of an epichlorohydrin polymer, ethylene propylene monomer (EPM), ethylene propylene diene monomer (EPDM), isobutylene sioprene rubber (IIR) (hydrogenated nitrile butadiene rubber).

3 is an exploded cross-sectional view for explaining the coupling relationship between the inner container inlet of the inner container and the first valve housing shown in FIG.

3, the valve housing 300 may include a housing lower portion 310 integrally injection molded, a boundary portion 320, a valve passage portion 330, a housing connection portion 340, and a housing upper portion 350 .

The housing lower portion 310 forms a female screw 314 on the inner peripheral surface of the lower portion 310 of the housing for screwing or twisting the inner container 100 to the inner container inlet 130.

In addition, the housing lower portion 310 further includes a plurality of corner grooves 311 spaced along the inner circumferential surface of the lower housing portion 310 at the lower inner corner thereof. The wall thickness of the corner groove 311 is thinner than the thickness of the lower end portion of the lower housing portion 310 without the corner groove 311. Therefore, when the valve housing 300 is screwed or twisted through an automated process, the assembling stress load that can be generated is dispersed in the lower end portion of the lower portion 310 of the housing, so that a crack or breakage failure occurs in the lower portion 310 of the housing Can be prevented in advance.

The boundary portion 320 integrally covers the upper portion of the lower portion 310 of the housing and has a passage hole 321 at the center. The contents of the inner container 100 can flow through the passage holes 321 of the boundary portion 320.

The valve passage portion 330 is located inside the inner container inlet and extends downward from the rim of the passage hole 321. The valve passage portion 330 serves to guide the flow of the contents of the inner vessel 100 and to prevent the pressure applied to the inner vessel 100 from acting on an excessive screw or twisted portion, (130) when the inner container inlet (130) is thermally shrunk or when a torsional stress deformation that may occur when the inner container inlet (130) is screwed is generated in a noncontact state inside the inner peripheral surface of the inner container can do.

The housing connection portion 340 may have a cylindrical wall structure smaller than the housing lower portion 310 and may extend above the boundary portion 320 to form a step 322 for the seating of the spring 460 shown in FIG. That is, the housing connection portion 340 provides a space for engagement or seating of the spring 460. In addition, since the housing connection portion 340 has an inner diameter smaller than the lower housing portion 310 or an inner diameter corresponding to the diameter of the spring 460, the compression or extension operation of the spring 460 can be reliably maintained.

The housing upper part 350 has a cylindrical shape and is integrally formed with the housing connecting part 340. [ At this time, the housing upper portion 350 is larger than the housing connecting portion 340 and smaller than the lower housing portion 310.

The upper portion 350 of the housing may be in contact with the first gasket 440 located inside the cap 410 of the mountain cup 400 shown in Figure 2. The upper portion of the upper portion 350 of the housing 350, And a first bead 351 formed on the first bead.

The first bead 351 has a ring cross-sectional shape extending along the upper surface rim of the housing upper portion 350.

The first bead 351 serves to enlarge the upper face edge area of the housing upper portion 350 corresponding to the protruded shape thereof. Accordingly, the close contact area with respect to the first gasket 440 is increased, and the sealing performance can be relatively increased.

In addition, the housing upper portion 350 has a plurality of stem guides 352 extending in the vertical direction on the inner circumferential surface thereof, spaced along the inner circumferential surface thereof, and protruding toward the center of the housing upper portion 350.

In the inner space of the stem guide 352 of the housing upper portion 350, a stem 450 corresponding to the valve opening / closing piston mentioned above with reference to FIG. 2 is coupled. The stem 450 contacts the stem guide 352. Therefore, the frictional force can be relatively reduced as compared with the contact with the entire inner peripheral surface of the housing upper portion 350, and smooth and reliable movement of the stem 450 is possible.

In addition, the housing upper portion 350 includes a coupling groove 353 extending along the outer peripheral surface of the housing upper portion 350.

2 or 3, the inner container 100 includes an inner container body 110 of transparent or opaque plastic material capable of repeated shrinkage or expansion for filling or discharging the contents, And an inner container inlet (130) formed with an inner container (130).

Here, the male screw 134 of the inner container inlet 130 may be fixed to the female screw 314 provided at the lower housing portion 310 of the valve housing 300 by screwing or twisting.

The inner container 100 includes a second bead 131 formed on the upper surface of the inner container inlet 130 so as to be in close contact with the second gasket 150 located in the lower portion of the housing 310. The second bead 131 also serves to enlarge the upper face edge area of the inner container inlet 130 corresponding to the protruded shape. Accordingly, the close contact area with respect to the second gasket 150 is increased, and the sealing performance can be relatively increased.

Also, the inner container 100 includes a nut-shaped reinforcement 120 formed integrally between the inner container inlet 130 and the inner container body 110. The nut-shaped reinforcing portion 120 may serve to reinforce the periphery of the inner container inlet 130.

2, the inner shape of the nut-shaped reinforcing portion 120 is formed by the inner container inlet 130 and the inner container body 110 (see FIG. 2) Relative to other portions of the inner container 100 so as to reliably connect the inner container 100 and the inner container 100 to each other.

The nut-like reinforcing part 120 may be used in a tool of a worker or a tool of a factory automation equipment so as to transmit a rotational force when screwing or twisting the inner body 100 and the valve housing 300, The screw or twisted engagement of the fastening member can be quickly and safely realized.

Figs. 4 to 6 are cross-sectional views for explaining the coupling relationship of the injecting apparatus shown in Fig. 2. Fig.

Referring to FIG. 4, the operator or the factory automation equipment joins the second gasket 150 inside the lower portion of the housing of the valve housing 300.

The factory automation equipment screws or twists the inner container 100 and the valve housing 300 to each other while transmitting rotational force to the inner container 100 through the nut type reinforcing part 120.

The spring 460 and the stem 450 are then coupled to the interior of the valve housing 300.

The first gasket 440 is seated inside the cap portion 410 of the mountain cup 400.

The housing upper portion 350 of the valve housing 300 is then inserted into the cap portion 410 from below the mountain cup 400 upward.

The caulking apparatus of the factory automation equipment performs the caulking process (F1) on a part of the side surface of the cap part (410) and forms the bending part (414) according to the result. At this time, the bent portion 414 is pressed and fixed to the engaging groove 353.

The inner pipe 530 passes through the pipe hole 411 of the cap portion 410 of the mountain cup 400 and the center hole of the first gasket 440 and is engaged with the inner engaging projection of the stem 450 Lt; / RTI >

Referring to FIG. 5, the assembly thus assembled is coupled with the outer container 200.

That is, in the assembly of the inner pipe 130, the second gasket 150, the first gasket 440, the stem 450, the spring 460, the valve housing 300 and the inner container 100, (100) is inserted toward the inside of the outer container (200), and the mountain cup (400) is positioned above the outer container inlet (210) of the outer container (200).

At this time, the outer container inlet 210 of the outer container 200 is inserted into the space between the inbound caulking portion 420 and the outbound caulking portion 430 of the mountain cup 400.

Thereafter, the facility for injecting compressed gas such as nitrogen at high pressure and simultaneously performing caulking performs an inbound coking process (F2) while injecting a compressed gas between the inner container 100 and the outer container 200 . The outbound coating process F3 may be performed immediately after the inbound coking process F2, or may be performed after the following contents injection.

6, the compressed gas G is injected at a pressure of 6 to 9 kgf / cm 2 in a space between the inner container 100 and the outer container 200.

At the same time, the inbound caulking portion 420 of the mountain cup 400 is pressed outwardly from the bottom surface of the outer container inlet 210 of the outer container 200 to the outer side of the outer container 200 to be tightly sealed and fixed. The outcock caulking portion 430 of the mountain cup 400 is pressed toward the inside of the outer container 200 so as to enclose the upper and outer rims of the outer container inlet 210 of the mountain cup 400, .

Further, the button 500 is coupled to the inner pipe 530.

Further, the contents M are injected or rapidly charged at a pressure of 20 to 40 kgf / cm 2, which is larger than the pressure of the compression gas (G). Accordingly, the internal container 100 (not shown) in a contracted state before the contents M is charged can be in an expanded state as shown in FIG.

Due to the difference in thermal expansion between the metallic cup 400 and the non-metallic outer container 200, the outer container 200 including the outer container inlet 210 is relatively inflated because the outbound caulking portion 430 While the relative contraction of the outer container 200 including the outer container inlet 210 can be suppressed through the inbound caulking portion 420. [

Since the difference in thermal expansion due to the release material is suppressed through the outbound caulking portion 430 and the inbound caulking portion 420 while the sealing force between the release materials is relatively increased to maintain the completely sealed state, It is possible to eliminate the factor of increasing the defective rate in the production or mass production of the injection device having the structure.

In addition, since the pressure of 6 to 9 kgf / cm 2 of the injected compressed body G does not cause a pressure drop through maintaining the completely sealed state, only the contents M of the injection device of this embodiment can be replenished again, It becomes possible to recycle the injection device having the structure.

Hereinafter, an operation method of this embodiment will be described.

FIGS. 7 and 8 are cross-sectional views for explaining the operation of the injector shown in FIG. 2. FIG.

Referring to FIG. 7, the stem 450 is in close contact with the bottom surface of the first gasket 440 due to the elastic force of the spring 460, which means that the valve is closed.

The user presses the button 500 downward using a finger or the like. The center hole of the first gasket 440 is in close contact with the inner pipe 530 during the movement of the inner pipe 530 to maintain a sealed state.

The inner pipe 530 moves downward and the upper end of the stem 450 coupled to the inner pipe 530 is separated from the bottom surface of the first gasket 440, Valve open state ".

That is, in the valve-opened state, the open space H is formed inside the valve housing 300, and the state shown in FIG. 8 is obtained.

8, when the contents M of the inner container 100 is separated from the inner container inlet (inlet) by the difference between the pressure of the compressed gas G and the atmospheric pressure between the inner container 100 and the outer container 200 (S) through the valve passage portion 330 of the valve housing 300, the open space H, the inner pipe 530, and the nozzle 510 of the button 500.

The stem 450 is returned to the original position by the elastic restoring force of the spring 460 in the valve housing 300 so that the upper end of the stem 450 The bottom surfaces of the first gaskets 440 are in close contact with and close to each other.

That is, the user can release the contents M of the inner container 100 into the air every time the button 500 is pressed like a normal spray product.

Second Embodiment

The inner container of the injection device having the double container structure of the present invention described in this embodiment may be the same as or very similar to the first embodiment except that the inner container inlet and the valve housing are coupled through ultrasonic welding. Therefore, the same or corresponding components in FIGS. 1 to 10 will be given the same or similar reference numerals, and a description thereof will be omitted here.

FIG. 9 is a perspective view of an inner container of a spray apparatus having a dual container structure according to a second embodiment of the present invention, and FIG. 10 is a sectional view showing a state in which a second valve housing and an inner container shown in FIG.

Referring to FIG. 9, the valve housing 300a according to the second embodiment includes a housing lower portion 310a having a circumferential surface which is hermetically sealed to the inner circumferential surface of the inner container inlet 130a of the inner container, And a housing upper part 350a having a larger diameter than the lower housing part 310a and integrally formed on the lower part of the housing part 310a.

In the second embodiment, the outer circumferential surface of the inner container inlet 130a is tightly coupled with the welding equipment 600 for ultrasonic welding. Then, a welding ultrasonic wave suitable for the plastic material is applied to the outer circumferential surface of the lower portion 310a of the housing and the inner container inlet 130a.

10, a fused portion 610 formed between the outer peripheral surface of the lower housing portion 310a of the valve housing 300a and the inner peripheral surface of the inner container inlet 130a of the inner container 100a is formed by the above ultrasonic welding do.

Particularly, the inner container 100a may be formed of one of soft polyethylene, nitrile, butyl, and polychloroprene, and may be formed of a flexible container body without wrinkles , Shrinkage and swelling can be made more smooth and smooth as compared with the polyethylene terephthalate material of the first embodiment.

Third Embodiment

The inner container of the injection device having the dual container structure of the present invention described in this embodiment may be the same as or very similar to the second embodiment except that the inner container inlet and the valve housing are coupled through the bending coupling. Therefore, the same or corresponding components in FIGS. 1 to 11 will be given the same or similar reference numerals, and a description thereof will be omitted here.

11 is a perspective view of an inner container of an injection device having a dual container structure according to a third embodiment of the present invention.

11, the valve housing 300a according to the third embodiment of the present invention includes a housing 300a of a valve housing 300a through a fastening metal band 710 or a coil-shaped band 720 corresponding to the banding coupling part 700, The lower portion 310a and the inner container inlet 130a of the inner container 100a are coupled to each other. Here, the banding coupling portion 700 may mean a means for wrapping or winding the coupling or sealing object using the force of the tooling device to maintain the pressing and fixing state.

At this time, protruding reinforcement parts 132 and 133 for preventing the bands 710 and 720 from separating from each other may be integrally formed on the upper and lower outer peripheral surfaces of the inner container inlet 130a of the inner container 100a.

The second bead 131 is formed on the upper surface of the upper side protruding reinforcing portion 132 which is the upper surface of the inner container inlet 130 so that the contact area with the bottom surface of the second gasket 150 is increased, Can be maximized.

The lower housing portion 310a of the valve housing 300a is inserted into the inner container inlet 130a of the inner container 100a with the second gasket 150 inserted therebetween.

Thereafter, the operator joins one of the bands 710 and 720 to the inner container inlet 130a and uses a band tightening tool or an automated facility. That is, one of the bands 710 and 720 is coupled to the outer peripheral surface of the inner container inlet 130a through the protruding reinforcement parts 132 and 133.

The outer circumferential surface of the lower housing portion 310a of the valve housing 300a and the inner circumferential surface of the inner container inlet 130a of the inner container 100a are in close contact with each other through the tightening force of the bands 710 and 720, Can be a sealing means, the sealing state between the valve housing 300a and the inner container inlet 130a can be firmly maintained.

100, 100a: inner container 110: inner container body
120: nut type reinforcing part 130, 130a: inner container inlet
131: second bead 150: second gasket
200: outer container 300, 300a: valve housing
351: First Bead 400: Mountain Cup
440: first gasket 500: button
510: nozzle 530: inner pipe
600: welding equipment 700: banding coupling part

Claims (13)

delete delete An inner container coupled to an injection device having an outer container filled with compressed gas and a mountain cup coupled to seal the outer container inlet of the outer container and disposed under the mountain cup inside the outer container,
A valve housing coupled to the cap portion bent at the center of the mountain cup; And
An inner container coupled to a lower portion of the housing of the valve housing and filled with contents to be injected,
Wherein an inner container inlet of the inner container and a lower portion of the housing of the valve housing are engaged with each other through a screw connection or a twist connection,
The valve housing includes: a housing lower portion having a female screw formed on an inner peripheral surface thereof for screw or twist engagement; A boundary portion integrally covering an upper portion of the lower portion of the housing and having a passage hole at the center thereof; A valve passage portion extending downward from an edge of the passage hole so as to be located inside the inner container inlet; A housing connection part which is formed in a cylindrical wall structure smaller than the lower part of the housing and extends upwardly of the boundary part to form a spring inner wear step; And a cylindrical housing upper portion having a size larger than the housing connection portion and smaller than the lower portion of the housing and formed integrally with the housing connection portion,
Wherein the upper portion of the housing includes an engaging groove extending along an outer circumferential surface of the upper portion of the housing so as to engage with a bent portion formed by caulking a side portion of the cap portion by being inserted into the cap portion of the mountain cup. Internal container of an injector having a container structure.
The method of claim 3,
The upper portion of the housing,
Further comprising a first bead formed on an upper surface of the upper portion of the housing so as to be in close contact with a first gasket located inside the cap portion of the mountain cup.
5. The method of claim 4,
Wherein the first gasket is made of fluoro elastomers. ≪ RTI ID = 0.0 > 15. < / RTI >
5. The method of claim 4,
The upper portion of the housing,
Further comprising a plurality of stem guides extending vertically from the inner circumferential surface of the upper portion of the housing and spaced from each other along the inner circumferential surface and protruding toward the center of the upper portion of the housing, Of the inner container.
An inner container coupled to an injection device having an outer container filled with compressed gas and a mountain cup coupled to seal the outer container inlet of the outer container and disposed under the mountain cup inside the outer container,
A valve housing coupled to the cap portion bent at the center of the mountain cup; And
An inner container coupled to a lower portion of the housing of the valve housing and filled with contents to be injected,
Wherein an inner container inlet of the inner container and a lower portion of the housing of the valve housing are engaged with each other through a screw connection or a twist connection,
The valve housing includes: a housing lower portion having a female screw formed on an inner peripheral surface thereof for screw or twist engagement; A boundary portion integrally covering an upper portion of the lower portion of the housing and having a passage hole at the center thereof; A valve passage portion extending downward from an edge of the passage hole so as to be located inside the inner container inlet; A housing connection part which is formed in a cylindrical wall structure smaller than the lower part of the housing and extends upwardly of the boundary part to form a spring inner wear step; And a cylindrical housing upper portion having a size larger than the housing connection portion and smaller than the lower portion of the housing and formed integrally with the housing connection portion,
Wherein the lower portion of the housing further comprises a plurality of corner grooves spaced apart from an inner corner of a lower end portion of the lower portion of the housing along an inner peripheral surface of the lower portion of the housing.
An inner container coupled to an injection device having an outer container filled with compressed gas and a mountain cup coupled to seal the outer container inlet of the outer container and disposed under the mountain cup inside the outer container,
A valve housing coupled to the cap portion bent at the center of the mountain cup; And
An inner container coupled to a lower portion of the housing of the valve housing and filled with contents to be injected,
Wherein an inner container inlet of the inner container and a lower portion of the housing of the valve housing are engaged with each other through a screw connection or a twist connection,
The valve housing includes: a housing lower portion having a female screw formed on an inner peripheral surface thereof for screw or twist engagement; A boundary portion integrally covering an upper portion of the lower portion of the housing and having a passage hole at the center thereof; A valve passage portion extending downward from an edge of the passage hole so as to be located inside the inner container inlet; A housing connection part which is formed in a cylindrical wall structure smaller than the lower part of the housing and extends upwardly of the boundary part to form a spring inner wear step; And a cylindrical housing upper portion having a size larger than the housing connection portion and smaller than the lower portion of the housing and formed integrally with the housing connection portion,
The inner container comprising: an inner container body of transparent or opaque plastic material capable of repeated shrinkage or expansion for filling or discharging of the contents; An inner container inlet having a male screw coupled to the female screw of the valve housing; A second bead formed on an upper surface of the inner container inlet so as to be in close contact with a second gasket positioned inside the lower portion of the housing; And a nut-shaped reinforcing portion integrally formed between the inner container inlet and the inner container body.
9. The method of claim 8,
And the second gasket is made of a fluorine rubber material.
delete An inner container coupled to an injection device having an outer container filled with compressed gas and a mountain cup coupled to seal the outer container inlet of the outer container and disposed under the mountain cup inside the outer container,
A valve housing coupled to the cap portion bent at the center of the mountain cup; And
An inner container coupled to a lower portion of the housing of the valve housing and filled with contents to be injected,
Wherein an inner container inlet of the inner container and a lower portion of the housing of the valve housing are coupled through banding,
And a tightening-type metal band or a coil-type band for tightening the inner container inlet to the lower portion of the housing of the valve housing by being coupled to wrap the outer circumferential surface of the inner container inlet for bending coupling. Internal container of an injection device having a structure.
The method according to any one of claims 3, 7, 8, and 11,
Wherein the valve housing is formed of HDPE (high density polyethylene) or an engineering plastic material.
The method according to any one of claims 3, 7, 8, and 11,
Wherein the inner container is formed of one material selected from the group consisting of polyethylene terephthalate, soft polyethylene, nitrile, butyl, and polychloroprene. Internal container of the injection device.

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