Aerosol container and inverted spray mechanism used therefor

Abstract

The object of the present invention is to provide an aerosol container and an inverted spray mechanism used therefor, which can reliably suck in a liquid agent even when the can body is used in an inverted state or in an inclined state in an inverted position. The inverted injection mechanism includes a main body, a retainer, and an inverted injection soft tube. The main body comprises a common flow path valve assembly, a flow path switching valve assembly installed in parallel with the common flow path valve assembly, and an inverted injection valve assembly, the common flow path valve assembly having a forward and inverted common flow path and a communication port for upright injection, the flow path switching valve assembly having a ball movement passage, a communication port for inverted injection, a stopper portion, and a ball, the inverted injection valve assembly having a connecting end connected to the flow path switching valve assembly and a connecting opening end separated from the flow path switching valve assembly and angled with the flow path switching valve assembly, the retainer is attached to the inverted injection valve assembly, and the soft tube for inverted injection is inserted into the retainer.

Description

[Technical Field]

[0001] The present invention relates to an aerosol container, and in particular to an inverted spray mechanism that has at least one soft tube for inverted spray extending around the bottom edge of the mounting cap of the spray valve of the aerosol container, and that can reliably suck in liquid medicine even when the can body is used in an inverted position or tilted in an inverted position, and to an aerosol container equipped with such an inverted spray mechanism. [Background technology]

[0002] FIG. 31 shows a prior art aerosol container that can be sprayed in both upright and inverted positions. The prior art aerosol container includes a can body 90, a ball valve 91, a spray cap 92, and a dip tube 93. The ball valve 91 is attached to the top opening of the can body 90, the spray cap 92 is attached to the top of the ball valve 91 so as to be exposed to the outside of the can body 90, the dip tube 93 has a slightly curved shape, and the curved direction of its tail end usually faces the same direction as the spray nozzle 921 of the spray cap 92 attached to the top of the can body 90, and the upright inlet 931 at the tail end of the dip tube 93 is located near the corner where the body and bottom of the can body 90 meet, and is so positioned that it is immersed in the liquid agent P inside the can body 90. According to this configuration, when the conventional can body 90 is used in an upright position, the liquid agent P is sucked in through the upright inlet 931 which is immersed in the liquid agent P, and the liquid agent P passes through the forward / inverted common flow path 9111, the liquid agent inlet 9112, and the liquid agent outlet 9113 in that order, and is sprayed out from the spray nozzle 921 of the spray cap 92.

[0003] As shown in FIG. 32, a ball valve 91 in a conventional aerosol container is composed of a valve seat 911 and a ball 94 disposed therein. The ball 94 can move through a ball movement passage 9114 in the valve seat 911, and an inverted inlet 9116 is provided on one side of the valve seat 911, and the opening direction of the inverted inlet 9116 faces the same direction as the injection port 921 of the injection cap 92. According to the prior art, when the can body 90 is used in an inverted state, the ball 94 naturally falls toward the ground due to gravity, opening the inverted spray communication port 9115 of the valve seat 911. At this time, the liquid material P is sucked in through the inverted inlet 9116, which is immersed in the liquid material P, passes through the inverted spray communication port 9115, the normal inverted common flow path 9111, the liquid material inlet 9112, and the liquid material outlet 9113, and is finally sprayed out from the spray port 921 of the spray cap 92. However, as shown in Figures 33 and 34, when there is less than half of the liquid agent P remaining in the can body 90, if the can body 90 is used in an inverted state or in an inclined state while in an inverted position, the inverted inlet 9116 is not immersed in the liquid agent P, and therefore the liquid agent P cannot be sucked in and sprayed out even if the spray cap 92 is pressed. Therefore, there is a problem that the liquid agent P remains in the can body 90 and is wasted.

[0004] Therefore, prior art aerosol containers needed improvement. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] Mitani Valve S13 Upside-down Valve https: / / mitanijam.com / v2 / wp-content / uploads / 2022 / 01 / 22_01valvesacc_All.pdf Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the drawbacks of the prior art, and aims to provide an aerosol container equipped with a soft tube for inverted injection connected to an inverted injection valve assembly, and an inverted injection mechanism for use therewith. The soft tube for inverted injection according to the present invention is arranged so that the suction port at the tip extends toward the corner where the bottom of the mounting cap of the injection valve and the inner wall surface of the can body join. This ensures that the liquid agent can be reliably sucked in by always being positioned on the periphery of the bottom of the mounting cap, even when the can body is used in an inverted position or tilted in an inverted position. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention proposes an inverted spray mechanism for use with an aerosol container, the inverted spray mechanism for use with the aerosol container being installed within a can body and connected to an injection valve, and including a main body, at least one retainer, and at least one soft tube for inverted spray, the main body includes a common flow path valve assembly, a flow path switching valve assembly installed in parallel with the common flow path valve assembly, and at least one inverted injection valve assembly; the common passage valve assembly has a forward and inverted common passage formed inside the common passage valve assembly and communicating with the injection valve, and a forward and inverted common passage communicating with the forward and inverted common passage, the flow path switching valve assembly includes a ball movement passage formed inside the flow path switching valve assembly and communicating with the injection valve, an inverted injection communication port formed at the bottom of the flow path switching valve assembly and communicating with the ball movement passage and the normal and inverted common flow path, a stopper portion provided at an upper opening of the flow path switching valve assembly, and a ball movably disposed within the ball movement passage and selectively controlling opening and closing of the inverted injection communication port, The at least one inverted injection valve assembly has a connecting end connected to the flow path switching valve assembly, a connecting opening end separated from the flow path switching valve assembly and angled with the flow path switching valve assembly, an inverted liquid agent flow path formed within the at least one inverted injection valve assembly and communicating with the inverted injection communication port, an inner engaging portion formed on an inner peripheral wall surface of the at least one inverted injection valve assembly, and a positioning annular surface portion formed within the at least one inverted injection valve assembly so as to surround it, the at least one retainer is attached to the at least one inverted injection valve assembly, and has a retaining hole formed to penetrate the at least one retainer and having a hole inlet portion and a hole outlet portion at both ends thereof, an outer engagement portion formed on an outer peripheral wall surface of the at least one retainer, and a slit portion formed to penetrate a side wall of the at least one retainer and located on a peripheral edge portion of the hole outlet portion, The at least one inverted injection soft tube is attached to the inverted injection valve assembly of the main body, and its end portion is inserted into the at least one retainer and protrudes from the hole outlet portion, and is connected to the inverted injection communication port, and an inverted injection inlet is provided at the tip portion of the at least one inverted injection soft tube.

[0008] In order to achieve the above object, the present invention further proposes an aerosol container, the aerosol container including a can body, an injection valve, an inverted injection mechanism, and an upright injection dip tube, The can body is a bottomed hollow cylindrical structure having an attachment opening, the injection valve is sealed and fixed to the mounting opening of the can body, and comprises a valve seat attached to the bottom of a mounting cap of the injection valve, a liquid agent inlet arranged in the internal space of the can body, and a liquid agent outlet arranged on the outside of the can body, the liquid agent inlet and the liquid agent outlet being selectively connected to each other, the valve seat having a protrusion formed to protrude from its outer circumferential surface and an extension pipe portion formed to extend from its bottom, the liquid agent inlet being located at the bottom end of the extension pipe portion, the inverted injection mechanism is connected to the injection valve and includes a main body, at least one retainer, and at least one inverted injection soft tube; the main body includes a common flow path valve assembly, a flow path switching valve assembly installed in parallel with the common flow path valve assembly, and at least one inverted injection valve assembly; the common flow path valve assembly is formed inside the common flow path valve assembly and has a forward and inverted common flow path that communicates with the liquid agent inlet of the injection valve, and a normal injection communication port that communicates with the forward and inverted common flow path, the flow path switching valve assembly has a ball movement passage formed inside the flow path switching valve assembly and communicating with the normal and inverted common flow path and the liquid agent inlet of the injection valve, an inverted injection communication port formed in the bottom of the flow path switching valve assembly and communicating with the ball movement passage and the normal and inverted common flow path, a stopper portion provided at the upper opening of the flow path switching valve assembly, and a ball movably disposed within the ball movement passage and selectively controlling opening and closing of the inverted injection communication port, The at least one inverted injection valve assembly has a connecting end connected to the flow path switching valve assembly, a connecting opening end separated from the flow path switching valve assembly and angled with the flow path switching valve assembly, an inverted liquid agent flow path formed within the at least one inverted injection valve assembly and communicating with the inverted injection communication port, an inner engaging portion formed on an inner peripheral wall surface of the at least one inverted injection valve assembly, and a positioning annular surface portion formed within the at least one inverted injection valve assembly so as to surround it, the at least one retainer is attached to the at least one inverted injection valve assembly, and has a retaining hole formed to penetrate the at least one retainer and having a hole inlet portion and a hole outlet portion at both ends thereof, an outer engagement portion formed on an outer peripheral wall surface of the at least one retainer, and a slit portion formed to penetrate a side wall of the at least one retainer and located on a peripheral edge portion of the hole outlet portion, the at least one inverted injection soft tube is attached to the inverted injection valve assembly of the main body, and its end portion is inserted into the at least one retainer and protrudes from the hole outlet portion, and is in communication with the inverted injection communication port, and has an inverted injection inlet at the tip end of the at least one inverted injection soft tube, The upright injection dip tube is attached to an inner hole of the upright injection connecting pipe portion of the main body and is in communication with the injection valve. [Effects of the Invention]

[0009] As described above, the advantage of the present invention is that, by installing the inverted spray valve assembly with a tilted structure and the soft tube for inverted spray, when the aerosol container held in the hand is used in an inverted or upside-down position when only half or less of the liquid remains in the can, the liquid accumulates at the corner where the bottom of the mounting cap of the spray valve and the inner wall surface of the can body join, and the inverted inlet is naturally immersed in the liquid, allowing the liquid to be reliably sucked in. That is, according to the present invention, it is possible to eject the liquid agent inside the can almost completely without waste. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of an aerosol container according to the present invention, the can body of which is shown translucently and the inverted spray mechanism is configured as a first preferred embodiment. FIG. [Figure 2] 1 is an exploded perspective view of an aerosol container having an inverted injection mechanism according to a first preferred embodiment of the present invention; [Figure 3] 1 is an enlarged side cross-sectional view showing a state in which a first preferred embodiment of an inverted injection mechanism of the present invention is installed inside a can body. [Figure 4] 1 is an exploded cross-sectional view showing the connection relationship between an inverted injection soft tube and an inverted injection valve assembly in a first preferred embodiment of the inverted injection mechanism of the present invention. FIG. [Figure 5]1 is a side cross-sectional view showing a state in which an inverted injection soft tube is connected to an inverted injection valve assembly in the first preferred embodiment of the inverted injection mechanism of the present invention. FIG. [Figure 6] FIG. 2 is a perspective view of the retainer of the present invention. [Figure 7] 1 is a schematic cross-sectional side view showing an inverted injection mechanism according to a first preferred embodiment of the present invention in use in an upright position. [Figure 8] 1 is a schematic cross-sectional side view showing an inverted state of use of a first preferred embodiment of an inverted injection mechanism of the present invention. FIG. [Figure 9] 1 is a schematic cross-sectional side view showing a state in which the inverted injection mechanism of the first preferred embodiment of the present invention is used in an inclined state in an inverted posture. FIG. [Figure 10] FIG. 1 is an exploded perspective view showing a valve seat and an inverted injection mechanism according to a first preferred embodiment of the present invention, and showing the relative positional relationship between the two. [Figure 11] 1 is a side cross-sectional view showing a state in which an inverted injection mechanism in a first preferred embodiment of the present invention is connected to an injection valve, and also showing the distance from the tip of an inverted injection soft tube to the top of the ring. FIG. [Figure 12] 1A to 1C are schematic cross-sectional side views showing a procedure for installing the first preferred embodiment of the inverted injection mechanism of the present invention inside a can body. [Figure 13] 1A to 1C are schematic cross-sectional side views showing a procedure for installing the first preferred embodiment of the inverted injection mechanism of the present invention inside a can body. [Figure 14] FIG. 10 is a perspective view showing an inverted injection mechanism in a second preferred embodiment of the present invention, with the can body being shown semi-transparently. [Figure 15] FIG. 10 is an exploded perspective view of a second preferred embodiment of the inverted injection mechanism of the present invention; [Figure 16] FIG. 10 is an exploded perspective view showing a valve seat and an inverted injection mechanism according to a second preferred embodiment of the present invention, and also showing the relative positional relationship between the two. [Figure 17] FIG. 2 is an enlarged side cross-sectional view showing a state in which a second preferred embodiment of the inverted injection mechanism of the present invention is installed inside a can body. [Figure 18]FIG. 10 is a schematic cross-sectional side view showing the inverted injection mechanism of the second preferred embodiment of the present invention in use in an upright position. [Figure 19] 19 is a schematic side cross-sectional view of FIG. 18 viewed from a different angle. [Figure 20] FIG. 10 is a schematic side cross-sectional view showing an inverted state of use of the inverted injection mechanism according to the second preferred embodiment of the present invention. [Figure 21] 21 is a schematic side cross-sectional view of FIG. 20 viewed from a different angle. [Figure 22] FIG. 10 is a schematic cross-sectional side view showing a state in which the inverted injection mechanism of the second preferred embodiment of the present invention is used in an inclined state in an inverted posture. [Figure 23] 10A to 10C are schematic side cross-sectional views showing the inverted injection mechanism of the second preferred embodiment of the present invention in use in an inverted posture at different tilt angles. [Figure 24] FIG. 10 is a cross-sectional side view showing a state in which an inverted injection mechanism in a second preferred embodiment of the present invention is connected to an injection valve, and also showing the distance from the tip of each inverted injection soft tube to each ring apex. [Figure 25] 5A to 5C are schematic cross-sectional side views showing a procedure for installing the second preferred embodiment of the inverted injection mechanism of the present invention inside the can body. [Figure 26] 5A to 5C are schematic cross-sectional side views showing a procedure for installing the second preferred embodiment of the inverted injection mechanism of the present invention inside the can body. [Figure 27] 1 is a schematic cross-sectional side view showing a state in which the first preferred embodiment of the inverted injection mechanism of the present invention is installed in can bodies having different outer diameters. FIG. [Figure 28] 1 is a schematic cross-sectional side view showing a state in which the first preferred embodiment of the inverted injection mechanism of the present invention is installed in can bodies having different outer diameters. FIG. [Figure 29] FIG. 10 is a schematic cross-sectional side view showing a state in which the second preferred embodiment of the inverted injection mechanism of the present invention is installed in can bodies having different outer diameters. [Figure 30] FIG. 10 is a schematic cross-sectional side view showing a state in which the second preferred embodiment of the inverted injection mechanism of the present invention is installed in can bodies having different outer diameters. [Figure 31]FIG. 1 is a schematic cross-sectional side view showing a conventional aerosol container in use in an upright position. [Figure 32] FIG. 1 is a schematic cross-sectional side view showing an inverted state of use of a conventional aerosol container. [Figure 33] 1 is a schematic side cross-sectional view showing a state in which a liquid agent cannot be ejected from an inverted aerosol container of the prior art. [Figure 34] 1 is a schematic side cross-sectional view showing a state in which a liquid agent cannot be ejected from an aerosol container of the prior art when the container is tilted in an inverted position. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1 and 14 show the aerosol container of the present invention and the inverted spray mechanism 30, 30A used therein. According to these drawings, the inverted injection mechanism 30, 30A is installed in the can body 10 and is connected to a dip tube 40 for upright injection. The aerosol container of the present invention may be a spray can using compressed gas.

[0012] As shown in Figure 7, in the aerosol container of the present invention, when the liquid agent P and propellant (not shown) are filled in the can body 10 and the user presses the spray cap 50 (actuator), the pressure of the propellant in the can body 10 causes the liquid agent P to pass through the spray valve 20 (aerosol valve) and be sprayed out from the spray outlet 51 of the spray cap 50. The propellant is preferably a compressed gas such as an environmentally friendly refrigerant (HFO-1234yf), and the liquid agent P is preferably a pre-mixed product such as an insecticide or pepper spray for crime prevention, but is not limited to these.

[0013] As shown in Figures 1 to 3 and 7, the can body 10 is a bottomed hollow cylindrical structure having an attachment opening 11 and an internal space 13, and in a preferred embodiment of the present invention, the material of the can body 10 is preferably metal.

[0014] The injection valve 20 is sealed and fixed to the mounting opening 11 of the can body 10, and is provided with a liquid agent inlet 221 and a liquid agent outlet 222, the liquid agent inlet 221 being disposed in the internal space 13 of the can body 10, and the liquid agent outlet 222 being located outside the can body 10. Specifically, as shown in Figures 2 and 3, a valve seat 22 is installed on the bottom 211 of the mounting cap 21 of the injection valve 20, and the liquid agent inlet 221 is formed at the bottom end of the valve seat 22. A tubular stem 23 is disposed within the valve seat 22, and a spring 24 is ring-mounted at the bottom of the stem 23. The bottom of the stem 23 is disposed within the valve seat 22, and the top of the stem 23 protrudes to the outside through the central hole of the mounting cap 21. The liquid agent outlet 222 is formed at the top of the stem 23. As a result, the liquid agent inlet 221 and the liquid agent outlet 22 are in communication with each other.

[0015] Furthermore, in this embodiment, a spray cap 50 is provided. The spray cap 50 is typically an attachment to a spray can, but is not limited to this. The spray cap 50 is attached to the liquid agent outlet 222 at the top of the stem 23 , and the spray port 51 of the spray cap 50 communicates with the liquid agent outlet 222 of the stem 23 .

[0016] In addition, the medium injection valve 20 in this embodiment uses an existing product with a dimension of 1 inch (25.4 mm). As shown in Figures 2 and 3, a known standard specification injection valve 20 is composed of seven parts, including a stem 23, an inner seal, a mounting cap 21, an outer seal, a valve seat 22, a spring 24, and an upright injection dip tube 40 (two of these parts, the inner seal and the outer seal, are not shown). Since the injection valve 20 is an existing product, a description of its internal structure will be omitted.

[0017] As shown in the embodiment of Figures 1 and 2, the injection valve 20 (1 inch size, i.e., 25.4 mm) used in the aerosol container of the present invention is applicable to a large-capacity metal can body 10. Specifically, as shown in FIG. 2, the outer diameter D2 of the can body 10 is 38 mm, the inner diameter is approximately 37.2 mm, and the inner diameter D1 of the mounting opening 11 of the can body 10 is 1 inch (25.4 mm), similar to that of the injection valve 20. The outer diameter of the can body 10 is not limited to this, and a metal can body 10 having an outer diameter other than 38 mm may be selected.

[0018] As shown in FIGS. 2 to 4 and 7, the inverted injection mechanism 30 in the first preferred embodiment of the present invention includes a main body 31, at least one retainer 32, and at least one soft tube 34 for inverted injection. The body 31 comprises a common flow path valve assembly 311 , a flow path switching valve assembly 312 , and at least one inverted injection valve assembly 313 . In this embodiment, the inverted injection mechanism 30 is provided with one each of the inverted injection valve assembly 313, the retainer 32, and the inverted injection soft tube 34.

[0019] As shown in FIG. 10, the valve seat 22 of the present invention has a protrusion 223 formed on its outer peripheral surface and an extension pipe portion 225 extending downward from its bottom. A positioning recess 2251 is provided on one side of the extension pipe portion 225, while a positioning protrusion 3115 corresponding to the contour of the positioning recess 2251 of the extension pipe portion 225 is formed on the inner peripheral wall surface of the forward / inverted common flow path 3111. Furthermore, the outer diameter of the extension tube portion 225 of the present invention has a conical shape that gradually narrows from top to bottom, while the inner diameter of the inner wall surface of the forward and inverted common flow path 3111 also has a conical shape that gradually narrows from top to bottom, so the outer diameter of the extension tube portion 225 is smaller than the inner diameter of the upper opening 3114 of the forward and inverted common flow path 3111. With this design, when the extension tube portion 225 of the valve seat 22 is inserted into the forward and inverted common flow path 3111, the conical surfaces come into contact with each other, creating frictional resistance, resulting in a strong connection. With further insertion, the bottom 224 of the valve seat 22 is tightly connected to the top 3113 of the common flow path valve assembly 311. As a result, the positioning recess 2251 and the positioning protrusion 3115 are accurately fitted together, thereby preventing the valve seat 22 from rotating or moving unintentionally, and reliably preventing leakage of the liquid agent P inside the can body 10. In addition, the positioning recess 2251 of the extension pipe portion 225 of the present invention and the protrusion 223 protruding from the outer peripheral surface of the valve seat 22 are formed parallel to each other and in opposite directions, so that after the extension pipe portion 225 is inserted into the forward and inverted common flow path 3111, the protrusion 223 of the valve seat 22 is positioned at the upper opening 3124 of the flow path switching valve assembly 312, thereby preventing the ball 33 from falling out of the ball movement passage 3121 to the outside.

[0020] In the first preferred embodiment shown in FIGS. 1 to 3, the inverted injection mechanism 30 is installed in the internal space 13 of the can body 10. At this time, the top 3113 of the common passage valve assembly 311 is joined to the bottom 224 of the valve seat 22 of the injection valve 20 . The common passage valve assembly 311 will now be described in detail. A forward and inverted common flow passage 3111 is formed inside the common flow passage valve assembly 311, and is connected to the inner hole of the extension tube portion 225 at the bottom of the valve seat 22. A forward and inverted common flow passage 3111 is also provided inside the common flow passage valve assembly 311, and a forward injection communication port 3112 is provided which communicates with the forward and inverted common flow passage 3111 and the liquid agent inlet 221 of the injection valve 20.

[0021] As shown in FIGS. 2 and 3, the flow path switching valve assembly 312 is installed in parallel with the common flow path valve assembly 311 and includes a ball moving passage 3121, an inverted injection communication port 3122, a stopper portion 3123 and a ball 33. More specifically, the inverted jet communication port 3122 is formed at the bottom of the passage switching valve assembly 312 and communicates with the ball movement passage 3121 and the normal and inverted common passage 3111 of the common passage valve assembly 311 . The ball 33 is movably disposed within the ball movement passage 3121 and selectively controls the opening and closing of the inverted injection communication port 3122 . In this embodiment, the ball movement passage 3121 penetrates the flow path switching valve assembly 312 to form an upper opening 3124, and a stopper portion 1323 is provided on the inner peripheral edge of the upper opening 3124 of the ball movement passage 3121 to prevent the ball 33 from falling out of the ball movement passage 3121.

[0022] The stopper portion 1323 will be described in detail below with reference to FIGS. The main body 31 of the present invention has two stopper portions 3123 of the ball movement passage 3121, and the two stopper portions 3123 are provided on the inner peripheral edge of the upper opening 3124 of the ball movement passage 3121 and are arranged at opposite radial positions so as to protrude facing each other. The distance between the two stopper portions 3123 is set to be slightly narrower than the diameter of the ball 33, so that by applying an appropriate force during assembly, the ball 33 can be passed between the two stopper portions 3123 and enter the ball movement passage 3121. Once the ball 33 enters, it is held within the ball passage 3121 and will not fall out. According to this structure, the ball 33 is held in a state in which it can move within the ball movement passage 3121, and the opening and closing of the inverted injection communication port 3122 can be selectively controlled. In this embodiment, the ball 33 is preferably made of stainless steel, and its size is 3.969 mm (5 / 32 inches) in diameter, but is not limited to this.

[0023] Furthermore, as shown in Figures 3 and 10 of this embodiment, the protrusion 223 formed on the outer circumferential surface of the valve seat 22 abuts against the upper opening 3124 of the flow path switching valve assembly 312 when the main body 31 and the valve seat 22 are coupled together and the bottom 224 of the valve seat 22 is tightly coupled to the top 3113 of the common flow path valve assembly 311. This also makes it possible to prevent the ball 33 from dropping out of the ball passage 3121 through the upper opening 3124 .

[0024] As shown in FIGS. 3 to 6, the retainer 32 has a holding hole 321 therein, and a hole inlet portion 3211 and a hole outlet portion 3212 are formed at both ends of the holding hole 321, respectively. In this embodiment, the diameter of the hole outlet 3212 is set to be slightly smaller than the diameter of the hole inlet 3211 . That is, the inner diameter of the holding hole 321 has a conical shape that gradually decreases from the hole inlet 3211 toward the hole outlet 3212 . To explain in more detail, when the inverted jet soft tube 34 is not inserted into the retainer 32, the opening diameter of the hole outlet portion 3212 is slightly smaller than the diameter of the inverted jet soft tube 34.

[0025] As shown in FIGS. 4 to 6, the retainer 32 further has an outer engagement portion 322 and a slit portion 323. The outer engaging portion 322 is formed on the outer peripheral wall surface of the retainer 32, and in this embodiment is configured as an annular protruding edge. The slit portion 323 is formed so as to penetrate the side wall of the retainer 32 and is provided as a notch on the periphery of the outlet portion 3212 . With this configuration, the hole outlet 3212 can be elastically expanded, and the inverted jet soft tube 34 can be more easily inserted from the hole inlet 3211 toward the hole outlet 3212 .

[0026] As shown in FIGS. 3 to 5, the inverted injection valve assembly 313 includes a connecting end 3131, a connecting opening end 3132, an inverting liquid agent flow path 3133, an inner engaging portion 3135, and a positioning annular surface portion 3136.

[0027] As shown in FIGS. 5 to 7, the inverted injection valve assembly 313 has a connecting end 3131 at its lower end and a connecting opening end 3132 at its upper end. The connecting end 3131 is connected obliquely to the flow path switching valve assembly 312, that is, the inverted injection valve assembly 313 is in an oblique state. That is, the connection opening end 3132 is disposed at a position separated from the flow path switching valve assembly 312, and has a certain inclination angle between the connection opening end 3132 and the flow path switching valve assembly 312. As shown in FIG. 7, there is an angle θ1 between the central axis of the inverted injection valve assembly 313 and the central axis of the flow path switching valve assembly 312, and the angle θ1 is preferably in the range of 20° to 60°. That is, the inverted injection valve assembly 313 is inclined relative to the flow path switching valve assembly 312 .

[0028] As shown in FIGS. 4 and 5, a positioning annular surface portion 3136 is provided inside the inverted injection valve assembly 313 so as to surround the internal space, and an inverting liquid agent flow path 3133 is also provided therein. The inverted liquid agent flow path 3133 communicates with the inverted jet communication port 3122 , and further communicates with the normal / inverted common flow path 3111 via the inverted jet communication port 3122 .

[0029] As shown in Figures 4 and 5 of this embodiment, an inner wall surface corresponding to the outer wall surface of the retainer 32 is formed in the internal space of the inverted injection valve assembly 313, and an inner engagement portion 3135 is formed on this inner wall surface. Specifically, the inner engagement portion 3135 is an annular groove.

[0030] As shown in FIGS. 4 and 5, the inverted jet soft tube 34 has a tip end 341 and a tail end 342 at both ends. The opening of the tip portion 341 is an inverted inlet 343 , and the end portion 342 extends through the retainer 32 to the positioning annular surface portion 3136 of the inverted injection valve assembly 313 . Furthermore, the retainer 32 is elastically deformable due to the slit portion 323, and when the inverted injection soft tube 34 is not inserted into the retainer 32, the inner diameter of the hole outlet portion 3212 is smaller than the outer diameter of the inverted injection soft tube 34. Therefore, when the end portion 342 of the inverted injection soft tube 34 is inserted into the holding hole 321 and inserted so as to protrude from the hole outlet portion 3212, the hole outlet portion 3212 wraps around and holds the inverted injection soft tube 34 so as not to shift, and as a result, the inverted injection soft tube 34 is firmly fixed within the holding hole 321 of the retainer 32.

[0031] As shown in FIGS. 3 to 7, the retainer 32, the inverted injection soft tube 34, and the inverted injection valve assembly 313 are assembled together. In the optimum assembly procedure, before the retainer 32 and the inverted injection soft tube 34 are installed in the inverted injection valve assembly 313, the required length of the inverted injection soft tube 34 is first determined in advance. Next, the inverted jet soft tube 34 and the retainer 32 are combined to assemble an assembly unit 350 as shown in FIG.

[0032] As shown in Figures 4 to 6, after the assembly unit 350 is completed, the retainer 32 on the side from which the end portion 342 of the inverted injection soft tube 34 protrudes is inserted into the inside of the inverted injection valve assembly 313, and the outer engagement portion 322 (annular protrusion) of the retainer 32 is fitted into the inner engagement portion 3135 (annular groove) of the inverted injection valve assembly 313, whereby the end portion 342 of the inverted injection soft tube 34 is positioned at the positioning annular surface portion 3136 and becomes connected to the inverted liquid agent flow path 3133. In this manner, the retainer 32, the inverted injection soft tube 34 and the inverted injection valve assembly 313 are assembled together.

[0033] In a preferred embodiment of the present invention, the inverted injection soft tube 34 is preferably a thin tube made of a soft and flexible material, such as low-density polyethylene (LDPE). Furthermore, it is preferable that the inner diameter of the inverted injection soft tube 34 be in the range of 1.40 mm to 1.50 mm, and the outer diameter be in the range of 2.00 to 2.10 mm, but these dimensions and materials are not limited to these, and the material should be bendable and have the property of recovering to its original shape. As shown in Figures 3, 4 and 11, the length of the inverted injection soft tube 34 in the first preferred embodiment of the present invention is the distance L1 from the ring top 324 of the retainer 32 installed in the inverted injection valve assembly 313 to the tip 341 of the inverted injection inlet 343, which is approximately 8.5 mm.

[0034] As shown in Figures 2, 3 and 7, the top of the upright injection dip tube 40 is connected to the inner hole of the upright injection connecting pipe part 36 provided at the bottom of the main body 31, and is connected to the forward and inverted common flow path 3111 and the liquid agent inlet 221 of the injection valve 20 via the upright injection connecting port 3112. The upright spray dip tube 40 of the present invention has a slightly curved shape, and the curved direction of its tail end is usually the same as the spray nozzle 51 of the spray cap 50 attached to the top of the can body 10. In addition, the upright inlet 401 at the tail end of the upright spray dip tube 40 is located close to the corner where the body and bottom of the can body 10 meet, and is positioned so that it is always immersed in the liquid agent P when in the upright state.

[0035] As shown in Figures 3 and 7, in the first preferred embodiment of the present invention, when the can body 10 is used in an upright position, the ball 33 naturally falls toward the ground due to gravity, blocking the inverted injection communication port 3122 and blocking the communication between the inverted inlet 343 and the normal / inverted common flow path 3111. At this time, the upright inlet 401 of the upright spray dip tube 40, which is immersed in the liquid agent P, sucks in the liquid agent P and sprays it out to the outside via the upright spray communication port 3112, the forward and inverted common flow path 3111, the liquid agent inlet 221, and the liquid agent outlet 222.

[0036] As shown in Figures 3, 8 and 9, in the first preferred embodiment of the present invention, when the can body 10 is used in an inverted state or in an inclined state in an inverted position, particularly when the remaining amount of liquid agent P in the can body 10 is half or less than half, the liquid agent P accumulates at the joint corner between the bottom 211 of the mounting cap 21 of the injection valve 20 and the inner wall surface 12 of the can body 10. At this time, the ball 33 falls onto the stopper portion 3123 due to gravity. Then, the inverted injection communication port 3122 is opened, and as a result, the liquid agent P is sucked in from the inverted inlet 343 which is immersed in the liquid agent P, and is sprayed out to the outside via the inverted liquid agent flow path 3133, the inverted injection communication port 3122, the normal inverted common flow path 3111, the liquid agent inlet 221, and the liquid agent outlet 222.

[0037] As shown in Figures 11 to 13, in a first preferred embodiment of the present invention, when the injection valve 20 according to the present invention is sealed and fixed to the mounting opening 11 of the can body 10, the width W1 of the main body 31 is set smaller than the inner diameter D1 of the mounting opening 11 of the can body 10, and this dimensional difference makes it possible to easily insert the injection valve 20 into the mounting opening 11. At this time, there is a possibility that the tip 341 of the soft tube for inverted injection 34 attached to the inverted injection valve assembly 313 may come into contact with the peripheral edge of the mounting opening 11 of the can body 10, but since the soft tube for inverted injection 34 is soft and flexible, even if it comes into contact with the peripheral edge of the mounting opening 11, it can be gently bent and stored inside the can body 10. Thereafter, the injection valve 20 is further moved toward the bottom of the can and sealed and fixed to the mounting opening 11 of the can body 10, completing the process of installing it in the can body 10. At this time, the upright inlet 401 of the upright injection dip tube 40 connected to the main body 31 is located at the corner where the body and bottom of the can body 10 meet.

[0038] As shown in Figures 14 and 15, the inverted injection mechanism 30A of the second preferred embodiment of the present invention is almost the same as the first preferred embodiment described above, except for the arrangement direction of the flow path switching valve assembly 312A of the main body 31A relative to the common flow path valve assembly 311A ​​and the provision of two inverted injection valve assemblies 313B and 313C. The structures of the flow path switching valve assembly 312A and the common flow path valve assembly 311A ​​in the second preferred embodiment are the same as those in the first preferred embodiment, and therefore, description thereof will be omitted.

[0039] As shown in Figures 15 and 17, in the second preferred embodiment of the present invention, the two inverted injection valve assemblies 313B, 313C are connected obliquely to the flow path switching valve assembly 312A by their respective connecting ends 3131B, 3131C, so that their respective connecting opening ends 3132B, 3132C are positioned at a distance from the flow path switching valve assembly 312A. In other words, there is a certain angle of inclination between the flow path switching valve assembly 312A and the flow path switching valve assembly 312B. Specifically, the two inverted injection valve assemblies 313B and 313C are connected obliquely to opposite sides of the flow path switching valve assembly 312A in the radial direction, and extend in directions away from each other. In this embodiment, the central axes of the two inverted injection valve assemblies 313B and 313C respectively form angles θ2 and θ3 with the central axis of the flow path switching valve assembly 312A. The angles θ2 and θ3 are preferably in the range of 20° to 60°, but are not limited to this. The two inverted injection valve assemblies 313B, 313C each have an inverted liquid agent flow path 3133B, 3133C and a positioning annular surface portion 3136B, 3136C inside, and the two inverted liquid agent flow paths 3133B, 3133C are both connected to the inverted injection communication port 3122A and also to the normal inverted common flow path 3111A of the common flow path valve assembly 311A, and each of the positioning annular surface portions 3136B, 3136C is formed to surround the internal space of each inverted injection valve assembly 313B, 313C.

[0040] As shown in Figures 15 and 16, in the second preferred embodiment, like the first preferred embodiment, a positioning recess 2251A is provided on one side of the extension pipe portion 225A of the valve seat 22A, and in contrast, a positioning protrusion 3115A corresponding to the contour of the positioning recess 2251A of the extension pipe portion 225A is formed on the inner wall surface of the forward / inverted common flow path 3111A. The outer diameter of the extension tube portion 225A has a conical shape that gradually narrows from top to bottom, and the inner diameter of the inner wall surface of the forward and inverted shared flow path 3111A also has a conical shape that gradually narrows from top to bottom, so the outer diameter of the extension tube portion 225A is smaller than the inner diameter of the upper opening 3114A of the forward and inverted shared flow path 3111A. With this design, when the extension pipe portion 225A of the valve seat 22A is inserted into the forward and inverted common flow passage 3111A, the conical surfaces come into contact with each other, generating frictional resistance, thereby achieving a strong connection. Continuing the insertion causes the bottom 224A of the valve seat 22A to be tightly coupled to the top 3113A of the common passage valve assembly 311A. As a result, the positioning recess 2251A and the positioning protrusion 3115A are accurately fitted together, thereby preventing the valve seat 22A from rotating or moving unintentionally, and reliably preventing leakage of the liquid agent P inside the can body 10A. Furthermore, the positioning recess 2251A of the extension pipe portion 225A and the protrusion 223A protruding from the outer surface of the valve seat 22A are formed parallel to each other and in opposite directions, so that after the extension pipe portion 225A is inserted into the forward and inverted common flow path 3111A, the protrusion 223A of the valve seat 22A is positioned at the upper opening 3124A of the flow path switching valve assembly 312A, thereby preventing the ball 33A from falling out of the ball movement passage 3121A to the outside.

[0041] As shown in Figures 18 and 19, in the second preferred embodiment, when the can body 10 is used in an upright position, the ball 33A naturally falls toward the ground due to gravity, blocking the inverted injection communication port 3122A and blocking the communication between the inverted inlet ports 343B and 343C and the normal inverted common flow path 3111A. At this time, the upright inlet 401 of the upright spray dip tube 40, which is immersed in the liquid agent P, sucks in the liquid agent P and sprays it out to the outside via the upright spray communication port 3112A, the forward and inverted common flow path 3111A, the liquid agent inlet 221A, and the liquid agent outlet 222A.

[0042] As shown in Figures 20 to 23, in the second preferred embodiment of the present invention, when the can body 10 is used in an inverted state or in an inclined state in an inverted position, particularly when the remaining amount of liquid agent P in the can body 10 is half or less than half, the liquid agent P accumulates at the joint corner between the bottom 211 of the mounting cap 21 of the injection valve 20 and the inner wall surface 12 of the can body 10. At this time, the ball 33A falls onto the stopper portion 3123A due to gravity. This causes the inverted injection communication port 3122A to open, and as a result, the liquid agent P is sucked in from the inverted inlets 343B and 343C which are immersed in the liquid agent P, and is sprayed out to the outside via the inverted liquid agent flow paths 3133B and 3133C, the inverted injection communication port 3122A, the normal inverted common flow path 3111A, the liquid agent inlet 221, and the liquid agent outlet 222.

[0043] As shown in Figures 24 to 26, in a second preferred embodiment of the present invention, when the injection valve 20 according to the present invention is sealed and fixed to the mounting opening 11 of the can body 10, the width W2 of the main body 31A is set smaller than the inner diameter of the mounting opening 11 of the can body 10, and this dimensional difference makes it possible to easily insert the injection valve 20 into the mounting opening 11. At this time, there is a possibility that the tip ends 341B, 341C of the inverted injection soft tubes 34B, 34C attached to the inverted injection valve assemblies 313B, 313C may come into contact with the peripheral edge of the mounting opening 11 of the can body 10, but because these inverted injection soft tubes 34B, 34C are soft and flexible, even if they come into contact with the peripheral edge of the mounting opening 11, they can bend slightly and be stored within the can body 10. Thereafter, the injection valve 20 is further moved toward the bottom of the can and sealed and fixed to the mounting opening 11 of the can body 10, completing the process of installing it in the can body 10. At this time, the upright inlet 401 of the upright injection dip tube 40 connected to the main body 31A is located at the corner where the body and bottom of the can body 10 meet.

[0044] After the above-mentioned attachment process is completed, the two gently curved soft inverted jet tubes 34B and 34C return to their original state. The inverted injection inlets 343B and 343C at the tip ends 341B and 341C of these inverted injection soft tubes 34B and 34C extend in opposite directions in the radial direction of the can body 10 toward the joint corner between the bottom 211 of the mounting cap 21 and the inner wall surface of the can body 10. Specifically, one of the nozzles faces the same direction as the nozzle 51 of the spray cap 50 , and the other faces the opposite direction to the nozzle 51 of the spray cap 50 . Similarly, as shown in FIG. 24, the lengths of the two inverted injection soft tubes 34B, 34C are the distances L2, L3 from the ring tops 324B, 324C of the retainers 32B, 32C installed in the inverted injection valve assemblies 313B, 313C to the tip ends 341B, 341C of the two inverted injection inlets 343B, 343C, which is approximately 9.1 mm, but is not limited to this, and the lengths of the two inverted injection soft tubes 34B, 34C can be adjusted as needed.

[0045] To explain in more detail, the inverted injection soft tube 34 used in the present invention can adjust the length that protrudes from the annular top 324 of the retainer 32 depending on the difference in the inner diameter dimension of the can body 10, as shown in Figures 11 to 13 and Figures 24 to 26. Furthermore, since the inverted injection soft tube 34 is flexible, even if it is installed in a curved state, it does not affect the suction of the liquid agent.

[0046] As shown in Figs. 27 to 30, the injection valve 20 and the can body 10 according to the present invention correspond to each other, and both adopt a 1 inch (25.4 mm) specification that complies with the international standard. The propellant used is a compressed gas suitable for use in a high pressure spray can. The can body 10 of the aerosol container of the present invention is preferably a large-capacity can body 10 of eight types having outer diameter standards of 35 mm, 38 mm, 40 mm, 45 mm, 50 mm, 53 mm, 59 mm, and 65 mm that are widely used in the international market. The inner diameter of the mounting opening 11 of the can body 10 of these standards is all the international standard of 1 inch (25.4 mm), and the injection valve 20 to be combined with this is also the international standard of 1 inch (25.4 mm). The present invention, which includes the inverted injection valve assemblies 313, 313B, 313C configured at an angle and the inverted injection soft tubes 34, 34B, 34C, is applicable to all of the above eight types of can bodies 10. By installing the inverted injection valve assemblies 313, 313B, 313C with an inclined structure and the soft tubes 34, 34B, 34C for inverted injection, when only half or less than half of the liquid agent P remains in the can 10, the liquid agent P can be reliably sucked in even when the aerosol container is used in an inverted state or in an inverted position. That is, according to the present invention, the liquid agent P in the can body 10 can be ejected almost completely without waste.

[0047] As shown in FIGS. 14 to 17, the second preferred embodiment of the present invention is almost the same as the first preferred embodiment, but differs in the following respects.

[0048] 1, as shown in FIGS. 2 and 7, in the first preferred embodiment, the flow path switching valve assembly 312 and the common flow path valve assembly 311 are arranged in a lateral parallel state, and the common flow path valve assembly 311 is located to the right of the flow path switching valve assembly 312. In contrast, as shown in Figures 14 and 15, in the second preferred embodiment, the flow path switching valve assembly 312A and the common flow path valve assembly 311A ​​are arranged in parallel in the front-to-rear direction, and the common flow path valve assembly 311A ​​is located behind the flow path switching valve assembly 312A.

[0049] 2. The number of the inverted injection valve assembly 313 in the first preferred embodiment is one, while the number of the inverted injection valve assemblies 313B, 313C in the second preferred embodiment is two.

[0050] 3. In relation to the above point, the number of the inverted injection soft tube 34 in the first preferred embodiment is one, and its inverted injection inlet 343 is located at the joint corner between the bottom 211 of the mounting cap 21 and the inner wall surface of the can body 10, and faces the same direction as the injection port 51 of the injection cap 50. In contrast, in the second preferred embodiment, the number of inverted injection soft tubes 34B, 34C is two, and their inverted injection inlets 343B, 343C are respectively located at the joint corners between the bottom 211 of the mounting cap 21 and the inner wall surface of the can body 10 so as to face in opposite directions in the radial direction of the can body 10. That is, one of the nozzles faces the same direction as the nozzle 51 of the spray cap 50 , and the other of the nozzles faces the opposite direction to the nozzle 51 of the spray cap 50 .

[0051] As shown in Figures 22 and 23, in the second preferred embodiment of the present invention, when the can body 10 is used in an inverted position with a left or right tilt, particularly when the remaining amount of liquid agent P in the can body 10 is half or less than half, the liquid agent P accumulates at the left or right joint corner between the bottom 211 of the mounting cap 21 and the inner wall surface 12 of the can body 10. In the second preferred embodiment, by providing two inverted injection valve assemblies 313B, 313C extending in opposite directions, each of the inverted injection soft tubes 34B, 34C is immersed in the liquid agent P regardless of whether it is tilted to the left or right, thereby ensuring reliable injection of the liquid agent P.

[0052] As described above, the advantage of the present invention is that by installing the inverted injection valve assemblies 313, 313B, 313C, which are connected obliquely to the flow path switching valve assemblies 312, 312A so that the central axis of the inverted injection valve assemblies 313, 313B, 313C forms angles θ1, θ2, θ3 with the central axis of the flow path switching valve assemblies 312, 312A, and the inverted injection soft tubes 34, 34B, 34C, the inverted injection inlets 343, 343B, 343C of the inverted injection soft tubes 34, 34B, 34C can be placed close to the joint corners between the bottom 211 of the mounting cap 21 of the injection valve 20 and the inner wall surface of the can body 10. As a result, even when the can body 10 is used in an inverted state or in an inclined state in an inverted position, and particularly when only half or less of the liquid agent P remains in the can body 10, the liquid agent P that has naturally accumulated in the joint corner between the bottom 211 of the mounting cap 21 of the injection valve 20 and the inner wall surface of the can body 10 can be reliably sucked in through the inverted inlets 343, 343B, 343C and sprayed out of the can body 10 from the injection cap 50 of the injection valve 20. Furthermore, the inverted injection soft tubes 34, 34B, and 34C according to the present invention employ a thin tube body made of soft and flexible low-density polyethylene (LDPE), and by employing an inner diameter in the range of 1.40 mm to 1.50 mm and an outer diameter in the range of 2.00 mm to 2.10 mm, they have excellent flexibility and the ability to return to their original shape. In short, by combining the main body 31, 31A and the injection valve 20 of the present invention, even if the can body 10 is used in an upright position, an inverted position or an inclined position in an inverted position when only half or less of the liquid agent P remains in the can body 10, the inverted inlet ports 343, 343B, 343C of the inverted injection soft tubes 34, 34B, 34C are always immersed in the liquid agent P, so that the liquid agent P can be reliably sucked in. That is, according to the present invention, it is possible to eject the liquid agent inside the can almost completely without waste. [Explanation of symbols]

[0053] 10 can body 11 Mounting opening 12 Inner wall surface 13 Interior Space 20 injection valve 21 Mounting cap 211 Bottom 22, 22A valve seat 221 Liquid inlet 222 Liquid outlet 223, 223A protrusion 224, 224A bottom 225, 225A extension pipe section 2251, 2251A, positioning recess 23 Stem 24 Spring 30, 30A inverted injection mechanism 31, 31A main body 311, 311A ​​Common flow path valve assembly 3111, 3111A forward and inverted common flow channel 3112, 3112A Upright injection communication port 3113, 3113A top 3114, 3114A Top opening 3115, 3115A Positioning protrusion 312, 312A Flow path switching valve assembly 3121, 3121A Ball passage 3122, 3122A Inverted injection communication port 3123, 2123A stopper part 3124, 3124A Top opening 313, 313B, 313C inverted injection valve assembly 3131, 3131B, 3131C connection end 3132, 3132B, 3132C connection opening end 3133, 3133B, 3133C Inverted Fluid Flow Path 3135 Inner engagement part 3136, 3136B, 3136C Positioning annular surface section 32, 32B, 32C retainers 321 Retaining hole 3211 Hole entrance 3212 Hole outlet 322 External engagement part 323 Slit section 324, 324B, 324C ring top 33, 33A Ball 34, 34B, 34C Soft tube for inverted injection 341, 341B, 341C tip 342 End 343, 343B, 343C inverted inlet 350 assembly units 36 Connecting pipe section for upright injection 40 Upright injection dip tube 401 Upright inlet 50 spray cap 51 Nozzle 90 can body 91 Ball Valve 911 Valve seat 9111 Forward and inverted joint channel 9112 Liquid inlet 9113 Liquid outlet 9114 Ball passage 9115 Inverted injection communication port 9116 Invert inlet 92 Spray Cap 921 Nozzle 93 Upright injection dip tube 931 Upright inlet 94 balls W1 width W2 width P liquid D1 Inner diameter D2 outer diameter L1 distance L2 distance L3 distance θ1 angle θ2 angle θ3 angle

Claims

1. An inverted injection mechanism that is installed in a can body and connected to an injection valve, the inverted injection mechanism including a main body, at least one retainer, and at least one inverted injection soft tube; the main body includes a common flow path valve assembly, a flow path switching valve assembly installed in parallel with the common flow path valve assembly, and at least one inverted injection valve assembly; the common passage valve assembly has a forward and inverted common passage formed inside the common passage valve assembly and communicating with the injection valve, and a forward and inverted common passage communicating with the forward and inverted common passage, the flow path switching valve assembly includes a ball movement passage formed inside the flow path switching valve assembly and communicating with the injection valve, an inverted injection communication port formed at the bottom of the flow path switching valve assembly and communicating with the ball movement passage and the normal and inverted common flow path, a stopper portion provided at an upper opening of the flow path switching valve assembly, and a ball movably disposed within the ball movement passage and selectively controlling opening and closing of the inverted injection communication port, The at least one inverted injection valve assembly has a connecting end connected to the flow path switching valve assembly, a connecting opening end separated from the flow path switching valve assembly and angled with the flow path switching valve assembly, an inverted liquid agent flow path formed within the at least one inverted injection valve assembly and communicating with the inverted injection communication port, an inner engaging portion formed on an inner peripheral wall surface of the at least one inverted injection valve assembly, and a positioning annular surface portion formed within the at least one inverted injection valve assembly so as to surround it, the at least one retainer is attached to the at least one inverted injection valve assembly, and has a retaining hole formed to penetrate the at least one retainer and having a hole inlet portion and a hole outlet portion at both ends thereof, an outer engagement portion formed on an outer peripheral wall surface of the at least one retainer, and a slit portion formed to penetrate a side wall of the at least one retainer and located on a peripheral edge portion of the hole outlet portion, The at least one inverted injection soft tube is attached to the inverted injection valve assembly of the main body, and its end portion is inserted into the at least one retainer, protruding from the hole outlet portion, and communicating with the inverted injection communication port, and an inverted injection inlet is provided at the tip end of the at least one inverted injection soft tube.

2. The inverted injection mechanism according to claim 1, characterized in that the at least one soft inverted injection tube is a thin tube made of soft and flexible low-density polyethylene (LDPE), and the inner diameter of the at least one soft inverted injection tube is in the range of 1.40 mm to 1.50 mm, and the outer diameter is in the range of 2.00 mm to 2.10 mm.

3. The inverted injection mechanism according to claim 1 or 2, characterized in that the inner diameter of the holding hole of the at least one retainer gradually decreases from the hole inlet portion toward the hole outlet portion, and when the at least one inverted injection soft tube is not inserted into the at least one retainer, the inner diameter of the hole outlet portion is smaller than the outer diameter of the at least one inverted injection soft tube.

4. 4. The inverted injection mechanism according to claim 3, wherein the outer engaging portion of the at least one retainer is an annular protruding edge, the inner engaging portion of the at least one inverted injection valve assembly is an annular groove, and the outer engaging portion of the at least one retainer and the inner engaging portion of the at least one inverted injection valve assembly are fittable with each other.

5. 3. The inverted injection mechanism according to claim 1 or 2, wherein the number of the at least one inverted injection valve assembly is two, the number of the at least one retainer is two, the number of the at least one inverted injection soft tube is two, the two inverted injection soft tubes are inserted into the two retainers, respectively, and the two retainers are attached to the two inverted injection valve assemblies, respectively.

6. An aerosol container comprising a can body, an injection valve, an inverted injection mechanism, and an upright injection dip tube; The can body is a bottomed hollow cylindrical structure having an attachment opening, the injection valve is sealed and fixed to the mounting opening of the can body, and comprises a valve seat attached to the bottom of a mounting cap of the injection valve, a liquid agent inlet arranged in the internal space of the can body, and a liquid agent outlet arranged on the outside of the can body, the liquid agent inlet and the liquid agent outlet being selectively connected to each other, the valve seat having a protrusion formed to protrude from its outer circumferential surface and an extension pipe portion formed to extend from its bottom, the liquid agent inlet being located at the bottom end of the extension pipe portion, the inverted injection mechanism is connected to the injection valve and includes a main body, at least one retainer, and at least one inverted injection soft tube; the main body includes a common flow path valve assembly, a flow path switching valve assembly installed in parallel with the common flow path valve assembly, and at least one inverted injection valve assembly; the common flow path valve assembly is formed inside the common flow path valve assembly and has a forward and inverted common flow path that communicates with the liquid agent inlet of the injection valve, and a normal injection communication port that communicates with the forward and inverted common flow path, the flow path switching valve assembly has a ball movement passage formed inside the flow path switching valve assembly and communicating with the normal and inverted common flow path and the liquid agent inlet of the injection valve, an inverted injection communication port formed in the bottom of the flow path switching valve assembly and communicating with the ball movement passage and the normal and inverted common flow path, a stopper portion provided at the upper opening of the flow path switching valve assembly, and a ball movably disposed within the ball movement passage and selectively controlling opening and closing of the inverted injection communication port, The at least one inverted injection valve assembly has a connecting end connected to the flow path switching valve assembly, a connecting opening end separated from the flow path switching valve assembly and angled with the flow path switching valve assembly, an inverted liquid agent flow path formed within the at least one inverted injection valve assembly and communicating with the inverted injection communication port, an inner engaging portion formed on an inner peripheral wall surface of the at least one inverted injection valve assembly, and a positioning annular surface portion formed within the at least one inverted injection valve assembly so as to surround it, the at least one retainer is attached to the at least one inverted injection valve assembly, and has a retaining hole formed to penetrate the at least one retainer and having a hole inlet portion and a hole outlet portion at both ends thereof, an outer engagement portion formed on an outer peripheral wall surface of the at least one retainer, and a slit portion formed to penetrate a side wall of the at least one retainer and located on a peripheral edge portion of the hole outlet portion, the at least one inverted injection soft tube is attached to the inverted injection valve assembly of the main body, and its end portion is inserted into the at least one retainer and protrudes from the hole outlet portion, and is in communication with the inverted injection communication port, and has an inverted injection inlet at the tip end of the at least one inverted injection soft tube, The aerosol container is characterized in that the upright spray dip tube is attached to an inner hole of the upright spray connecting pipe portion of the main body and is in communication with the spray valve.

7. 7. The aerosol container according to claim 6, wherein a protrusion formed on the outer peripheral surface of the valve seat is positioned at an upper opening of the flow path switching valve assembly, thereby preventing the ball from falling out of the ball movement passage from the upper opening.

8. The aerosol container according to claim 6 or 7, characterized in that the at least one soft inverted jet tube is a thin tube made of soft and flexible low-density polyethylene (LDPE), and the at least one soft inverted jet tube has an inner diameter in the range of 1.40 mm to 1.50 mm and an outer diameter in the range of 2.00 mm to 2.10 mm.

9. 8. The aerosol container according to claim 6, wherein a positioning recess is provided on the extension tube portion of the valve seat, and a positioning protrusion is provided on the inner peripheral wall surface of the common passage valve assembly, the outer diameter of the extension tube portion gradually decreasing from top to bottom, and correspondingly, the inner diameter of the forward / inverted common passage gradually decreasing from top to bottom, so that when the bottom of the valve seat is coupled to the top of the common passage valve assembly so as to abut against it, the positioning recess and the positioning protrusion are tightly fitted together.

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