Upright and inverted pressurized sprayer and spraying method

Abstract

This invention provides a forward / inverted pressurized sprayer that can prevent spray malfunctions by ensuring a sufficient amount of liquid remains in the tube when the sprayer is inverted. [Solution] An inverted pressure-accumulating sprayer A comprising a container 1 for storing liquid, a pressure accumulation mechanism S attached to the container, an inverted mechanism 5 attached to the pressure accumulation mechanism, and a tube 2 attached to the inverted mechanism, wherein the liquid in the container is sprayed to the outside from the pressure accumulation mechanism via the inverted mechanism in both an upright and inverted state, wherein the area M2 of the flow path openings 5a and 3a provided in the bottom cover 5a through which the liquid flowing via the top cover 5b passes, and the area M3 of the opening on the pressure accumulation mechanism side that communicates with the top cover provided in the hollow section, have the relationship M2 > M3.

Description

[Technical Field]

[0001] The present invention relates to a pressurized sprayer, and more particularly to an upright and inverted pressurized sprayer capable of spraying in two states, upright and inverted, and to a spraying method using the upright and inverted pressurized sprayer. [Background technology]

[0002] Pressurized sprayers, used to atomize various liquids, are widely used. This device primarily works by manually pulling a rotating trigger to pressurize the liquid inside the container, which then sprays it outwards.

[0003] Depending on the location where you want to spray, such as a low place, it may be impossible or difficult to spray with a pressurized sprayer while it is upright. However, there are many situations where spraying at low places is necessary, such as when spraying cleaning detergents.

[0004] To address this issue, a so-called upright and inverted sprayer has been developed that can spray in both upright and inverted positions.

[0005] For example, the invention described in Patent Document 1 is a spraying device that includes a valve that selectively blocks the flow path in conjunction with the operation of the pumping section, and is capable of inverted spraying.

[0006] Furthermore, the invention described in Patent Document 2 is a trigger-type liquid ejection container that can be used both upright and inverted, with a suction passage branch section having a ball valve attached to the bottom of the ejector and the injection cylinder facing downwards. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 6425763 [Patent Document 2] Japanese Patent Publication No. 2000-93857 [Overview of the project] [Problems that the invention aims to solve]

[0008] In inverted and upright pressurized sprayers such as those described in Patent Documents 1 and 2, the flow path from the tube used to draw up liquid in the upright position is generally sealed by the liquid remaining inside the tube. Therefore, if there is not enough liquid remaining in the tube, the flow path in the upright position may not be sealed, resulting in poor spraying in the inverted position.

[0009] This invention was developed in response to the problems described above. In other words, the present invention aims to provide a forward / inverted pressurized sprayer that can prevent spraying failures by leaving a sufficient amount of liquid inside the tube when the sprayer is in an inverted state. [Means for solving the problem]

[0010] As a result of diligent research, the inventors discovered that by making the mounting portion for attaching the tube larger in diameter than the tube itself, it is possible to retain a sufficient amount of liquid inside the tube when it is inverted. This invention is based on this finding.

[0011] The present invention relates to an inverted pressure sprayer A comprising a container 1 for storing liquid, a pressure accumulation mechanism S attached to the container 1, an inverted mechanism 5 attached to the pressure accumulation mechanism S, and a tube 2 attached to the inverted mechanism 5, wherein the liquid in the container 1 is sprayed to the outside from the pressure accumulation mechanism S via the inverted mechanism 5 in both an upright and inverted state, and the inverted mechanism 5 has a bottom cover portion 5a located on the container 1 side and a top cover portion 5b located on the pressure accumulation mechanism S side, and the bottom cover portion 5a has a hollow portion 5a3 and a liquid reservoir cylinder portion 5a1 communicating with the hollow portion 5a3 and having a valve body portion VB located inside, and A mounting portion 5a2 for attaching tube 2 is formed, and in the upright position, the liquid in container 1 flows through the hollow portion 5a3 and the top cover portion 5b and is sprayed to the outside from the pressure accumulation mechanism portion S, and in the inverted position, the liquid in container 1 flows through the liquid reservoir cylinder portion 5a1, the hollow portion 5a3, and the top cover portion 5b and is sprayed to the outside from the pressure accumulation mechanism portion S, and the area M2 of the flow path opening 5a3a provided in the bottom cover portion 5a through which the liquid flowing via the top cover portion 5b passes, and the area M3 of the opening on the pressure accumulation mechanism portion side that communicates with the top cover portion provided in the hollow portion, M2>M3 This relationship exists in the inverted and inverted pressure-accumulating sprayer A.

[0012] The present invention relates to the above-described inverted pressurized sprayer A, wherein the bottom cover portion 5a further has a hollow portion 5a3 where the liquid flow path from the tube 2 and the liquid flow path from the top cover portion 5b merge, and the hollow portion 5a3 is located inside the neck portion 1a of the container 1.

[0013] The present invention relates to the area M1 of the liquid intake port 6 provided between the top cover portion 5b and the bottom cover portion 5a, and the area M2 of the flow path opening 5a3a. M1>M2 This is present in the above-described inverted pressure-accumulating sprayer A, which has the relationship described above.

[0014] In this invention, the area M3 of the opening 5a3b on the side of the pressure accumulation mechanism is 0.15 mm². 2 ~10.3mm2 This is present in the inverted and upright pressurized sprayer described above.

[0015] In this invention, the tube 2 is fitted into the mounting portion 5a2 by insertion, and the volume of the mounting portion 5a2 is 26 mm 3 The above-described inverted pressure-accumulating sprayer A is as described above.

[0016] In this invention, the top cover portion 5b has a lidded cylindrical portion 5b1 that is open on the container 1 side and a tubular portion 5b2 adjacent to the lidded cylindrical portion 5b1, and the liquid reservoir cylinder portion 5a1 is inserted into the lidded cylindrical portion 5b1, and the pressure accumulation mechanism portion S has a trigger portion T, a piston cylinder 3 having a piston 3a that moves when the trigger portion T is rotated, a first valve FV that opens and closes the space between the tube 2 and the piston cylinder 3, a nozzle portion N from which liquid is sprayed, a flow path portion 4 connecting the piston cylinder 4 and the nozzle portion N, a second valve SV that opens and closes the flow path portion 4, and the container 1 The above-described upright inverted pressurized sprayer A comprises a screw-on cap portion 7, and the upright inverted mechanism S is positioned by screwing the cap portion 7 onto the container 1. In the upright position, the liquid reservoir cylinder portion 5a1 is closed by the valve body portion VB, and the liquid drawn up from the tube 2 is sprayed from the nozzle portion N via the hollow portion 5a3 and the pipe portion 5b2. In the inverted position, the liquid reservoir cylinder portion 5a1 is opened, and the liquid from the container 1 is sprayed from the nozzle portion N via the covered cylindrical portion 5b1, the liquid reservoir cylinder portion 5a1, the hollow portion 5a3, and the pipe portion 5b2.

[0017] The present invention resides in a spraying method using the above-described upright / inverted pressure-accumulation sprayer A, wherein in the upright state, by rotating the trigger portion T with the container 1 positioned below the pressure-accumulation mechanism portion S, liquid flows from the container 1 to the hollow portion 5a3 and the tube portion 5a2 and is sprayed from the nozzle portion N, and in the inverted state, by rotating the trigger portion T with the container 1 positioned above the pressure-accumulation mechanism portion S, liquid flows from the container 1 to the covered cylindrical portion 5b1, the liquid reservoir cylinder portion 5a1, the hollow portion 5a3, and the tube portion 5b2 and is sprayed from the nozzle portion N.

[0018] Further, the present invention may be an appropriate combination of the configurations described above.

Advantageous Effects of the Invention

[0019] The upright / inverted pressure-accumulation sprayer A of the present invention includes a container 1 for storing liquid, a pressure-accumulation mechanism portion S attached to the container 1, an upright / inverted mechanism portion 5 attached to the pressure-accumulation mechanism portion S, and a tube 2 attached to the upright / inverted mechanism portion 5, and is an upright / inverted pressure-accumulation sprayer A that sprays the liquid in the container 1 from the pressure-accumulation mechanism portion S to the outside via the upright / inverted mechanism portion 5 in both the upright state and the inverted state, wherein the upright / inverted mechanism portion 5 has a bottom cover portion 5a disposed on the container 1 side, and a top cover portion 5b disposed on the pressure-accumulation mechanism portion S side, the bottom cover portion 5a is formed with a hollow portion 5a3, a liquid reservoir cylinder portion 5a1 that communicates with the hollow portion 5a3 and has a valve body portion VB disposed therein, and a mounting portion 5a2 for mounting the tube 2, and the area M2 of the flow path opening 5a3a through which the liquid flowing via the top cover portion 5b passes, and the area M3 of the pressure-accumulation mechanism portion side opening that is provided in the hollow portion and communicates with the top cover portion, satisfy M2>M3 By having this relationship, a sufficient amount of liquid can remain in the tube 2 in the inverted state. In addition, the liquid in the mounting portion 5a2 together with the liquid in the tube 2 functions as a seal, preventing air from being mixed in. Therefore, it is possible to properly spray the liquid in the container 1 in the inverted state.

[0020] The inverted pressurized sprayer A of the present invention has a bottom cover portion 5a that further includes a hollow portion 5a3 where the liquid flow path from the tube 2 and the liquid flow path from the top cover portion 5b merge. Since the hollow portion 5a3 is positioned inside the neck portion 1a of the container 1, a sufficient amount of liquid can be left in the tube 2 when the sprayer is inverted. Therefore, it is possible to properly spray the liquid in the container 1 when the sprayer is inverted.

[0021] The inverted pressurized sprayer A of the present invention has an area M1 of the liquid intake port 6 provided between the top cover portion 5b and the bottom cover portion 5a, and an area M2 of the flow path opening 5a3a. M1>M2 This relationship makes it easier to draw liquid from the flow path openings 5a3a rather than from tube 2 when spraying liquid in an inverted state, thereby reducing the amount of liquid remaining in tube 2 that is drawn in. As a result, sufficient liquid remains in tube 2, acting as a seal and preventing air from entering, enabling proper spraying.

[0022] The inverted pressure-accumulating sprayer A of the present invention has an area M3 of the opening 5a3b on the pressure accumulation mechanism side of 0.15 mm². 2 ~10.3mm 2 This allows a sufficient amount of liquid to remain in tube 2 when the container is inverted. Therefore, it becomes possible to properly spray the liquid in container 1 when the container is inverted.

[0023] The inverted pressurized sprayer A of the present invention reduces manufacturing steps because the tube 2 is fitted into the mounting part 5a2 by being inserted into it. Furthermore, the tube 2 can be easily attached to and detached from the mounting part 5a2, making maintenance and replacement easy. Furthermore, in this invention, the volume of the mounting portion 5a2 is 26 mm 3 As a result, it is possible to retain a sufficient amount of liquid in the mounting portion 5a2 when the device is inverted. Therefore, it becomes possible to properly spray the liquid inside container 1 even when it is in an inverted position.

[0024] The inverted and upright pressurized sprayer A of the present invention has a pressurizing mechanism S that includes a cap portion 7 that screws onto the container 1, and the inverted and upright mechanism 5 is positioned by the cap portion 7 screwing onto the container 1, thereby ensuring a liquid flow path in both the upright and upside-down positions. Furthermore, the top cover portion 5b is formed with a lidded cylindrical portion 5b1 that opens towards the container 1, and a tubular portion 5b2 adjacent to the lidded cylindrical portion 5b1. The liquid reservoir portion 5a1 is inserted into the lidded cylindrical portion 5b1. In the upright position, the liquid reservoir portion 5a1 is closed by the valve body portion VB, and the liquid drawn up from the tube 2 is sprayed from the nozzle portion N via the hollow portion 5a3 and the tubular portion 5b2. In the inverted position, the liquid reservoir portion 5a1 is opened, and the liquid from the container 1 is sprayed from the nozzle portion N via the lidded cylindrical portion 5b1, the liquid reservoir portion 5a1, the hollow portion 5a3, and the tubular portion 5b2. Thus, even when switching between the upright and inverted positions, it is possible to properly spray the liquid inside the container 1.

[0025] The spraying method of the present invention is a spraying method using the upright and inverted pressurized sprayer A described above. In the upright position, by rotating the trigger part T with the container 1 below the pressurizing mechanism S, liquid flows from the container 1 to the hollow part 5a3 and the tube part 5a2 and is sprayed from the nozzle part N. In the inverted position, by rotating the trigger part T with the container 1 above the pressurizing mechanism S, liquid flows from the container 1 to the covered cylindrical part 5b1, the liquid reservoir tube part 5a1, the hollow part 5a3, and the tube part 5b2 and is sprayed from the nozzle part N. Thus, it is possible to spray the liquid inside the container 1 in both the upright and inverted positions. [Brief explanation of the drawing]

[0026] [Figure 1] Figure 1 is a cross-sectional view showing an inverted and upright pressurized sprayer. [Figure 2] Figure 2 is a cross-sectional view showing the inverted / upright mechanism in the upright position. [Figure 3] Figure 3 is a cross-sectional view showing the inverted mechanism in the upright position. [Figure 4] Figure 4 is an explanatory diagram showing the flow of liquid in an upright position. [Figure 5] Figure 5 is an explanatory diagram showing the flow of liquid in an inverted state. [Figure 6] Figure 6 is a cross-sectional perspective view showing the liquid intake port. [Figure 7] Figure 7 is a side view showing the bottom cover section. [Figure 8] Figure 8 is a cross-sectional view showing the opening of the flow channel. [Figure 9] Figure 9 is a cross-sectional view showing the opening on the side of the pressure accumulation mechanism. [Figure 10] Figure 10 is a cross-sectional perspective view showing the hollow section. [Modes for carrying out the invention]

[0027] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, identical elements will be denoted by the same reference numeral, and redundant explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right shall be based on the positional relationships shown in the drawings. In addition, the dimensional ratios in the drawings are not limited to those shown.

[0028] Figure 1 is a cross-sectional view showing an inverted pressure-accumulating sprayer A. Hereinafter, the state in which container 1 is at the bottom and the pressurized sprayer is at the top will be referred to as the upright state. Conversely, the state in which container 1 is at the top and the pressurized sprayer is at the bottom will be referred to as the inverted state. Unless otherwise specified, the up and down directions refer to those in the upright state. The inverted and upright pressurized sprayer A of the present invention is attached to a container 1 that stores liquid, and is capable of spraying the liquid in the container 1 in both an upright and upside-down position. The inverted and upright pressurized sprayer A comprises a container 1, a pressurizing mechanism S attached to the container 1, and an inverted and upright mechanism 5 attached to the pressurizing mechanism S. The pressure accumulation mechanism S is a mechanism for applying pressure to a liquid and spraying it to the outside. The pressure accumulation mechanism S includes a cylindrical tube 2, a piston cylinder 3 having a piston 3a that moves by the rotation of a trigger T, a first valve FV that opens and closes the space between the tube 2 and the piston cylinder 3, a nozzle N from which the liquid is sprayed, a flow path 4 connecting the piston cylinder 3 and the nozzle N, and a second valve SV that opens and closes the flow path 4. The piston cylinder 3, first valve FV, second valve SV, nozzle section N, flow path section 4, second valve SV section, and inverted / reverse mechanism section 5 are attached to the base section and integrated together. Press-fit fitting is preferably used for attaching these to the base portion.

[0029] The lower end of the base is equipped with a cap portion 7 used for attachment to the container 1, and the cap portion 7 is provided with a screw. Furthermore, the neck portion 1a of the container 1 is provided with a screw for screwing it into the cap portion 7. Therefore, the pressure accumulation mechanism S and the container 1 can be attached and detached by screwing them together. Furthermore, the pressure accumulation mechanism S is positioned relative to the container 1 by screwing it in, thereby positioning the inverted mechanism 5, which will be described later, relative to the container. This makes it possible to ensure a liquid flow path in both the upright and inverted positions. With the base portion attached to container 1, tube 2 is inserted into container 1.

[0030] Figure 2 is a cross-sectional view showing the inverted / upright mechanism 5 in the upright position. The inverted mechanism 5 is attached to the lower side of the pressure accumulation mechanism S. The inverted mechanism 5 has a bottom cover portion 5a to which the tube 2 is attached, and a top cover portion 5b attached to the bottom cover portion 5a.

[0031] The bottom cover portion 5a has a protruding mounting portion 5a2 formed thereon for attaching the tube 2 that protrudes downward therefrom. The mounting portion 5a2 is cylindrical, and it is attached by inserting and fitting the tube 2 inside it. In other words, the inner diameter of the mounting portion 5a2 is smaller than the outer diameter of the tube 2. Furthermore, the volume of the mounting section 5a2 is 26 mm³. 3 It is preferable that the above conditions are met.

[0032] By fitting and attaching tube 2 to mounting portion 5a2, the manufacturing time for the inverted pressurized sprayer A can be reduced. Furthermore, the tube 2 can be easily attached to and detached from the mounting part 5a2, making maintenance and replacement easy.

[0033] It is preferable that the inner diameter of the mounting portion 5a2 is smaller than the outer diameter of the tube 2. In this case, as will be described later, when the device is inverted, the amount of liquid drawn in from the tube 2 will be relatively small compared to the amount of liquid stored inside the mounting portion 2, making it possible to leave a sufficient amount of liquid inside the tube 2. Similarly, the volume of the mounting section 5a2 is 26 mm 3 As a result of the above, it is possible to retain a sufficient amount of liquid in tube 2 when it is inverted.

[0034] The bottom cover portion 5a has a hollow portion 5a3 formed inside it. In the hollow portion 5a3, the liquid flow path from tube 2 and the liquid flow path from top cover portion 5b merge. That is, in both the upright and inverted states, the liquid from container 1 is sprayed to the outside from the nozzle through the hollow portion 5a3. Therefore, the hollow section 5a3 is the point where the liquid flow path from the mounting section 5a2 and the liquid reservoir section 5a1 merge, and a flow path opening 5a3a is formed therein, which is an opening for the liquid from the liquid reservoir section 5a1 to flow through. Further, on the downstream side of the hollow portion 5a3, an accumulator mechanism portion side opening 5a3b that communicates with a pipe portion 5b2 described later is provided. The area M3 of the accumulator mechanism portion side opening 5a3b is 0.15 mm 2 to 10.3 mm 2 . The hollow portion 5a3 is provided so as to be positioned inside the neck portion 1a of the container 1 when the accumulator-type sprayer is attached to the container 1.

[0035] By arranging the hollow portion 5a3 inside the neck portion 1a of the container 1, a sufficient amount of liquid can remain in the tube 2 in an inverted state. Therefore, it is possible to properly spray the liquid in the container 1 in the inverted state. Further, as described above, this positional relationship is maintained by positioning the normal / inverted mechanism portion 5 on the cap portion 7.

[0036] The bottom cover portion 5a is formed with a liquid reservoir cylindrical portion 5a1 for a substantially spherical valve body portion VB to move inside thereof. The liquid reservoir cylindrical portion 5a1 has a cylindrical shape, and the upper side thereof opens toward the inside of the top cover portion 5b (the covered cylindrical portion 5b1 described later). Further, the lower side of the liquid reservoir cylindrical portion 5a1 communicates with the hollow portion 5a3 described above. Furthermore, the lower side of the liquid reservoir cylindrical portion 5a1 is tapered to reduce in diameter, forming a valve seat portion VS for the valve body portion VB. The valve body portion VB has a spherical shape, and is disposed inside the liquid reservoir cylindrical portion 5a1 so as to move therein. In an upright state, the valve body portion VB is placed on the valve seat portion VS below the liquid reservoir cylindrical portion 5a1, and closes the space between the covered cylindrical portion 5b1 of the top cover portion 5b described later and the hollow portion 5a3.

[0037] The top cover portion 5b is formed with a covered cylindrical portion 5b1 that opens toward the container 1 side, and a pipe portion 5b2 adjacent to the covered cylindrical portion 5b1. The covered cylindrical portion 5b1 is positioned such that the liquid reservoir cylinder portion 5a1 is inserted into it, and a receiving portion 5b1a is formed on the inside of the covered cylindrical portion 5b1 at a position corresponding to the liquid reservoir cylinder portion 5a1. As will be described later, the receiving portion 5b1a is for accommodating the valve body portion VB in an inverted state. The receiving portion 5b1a is provided with ribs that face downward (i.e., upward in the inverted state) to prevent movement of the valve body portion VB, thereby preventing unexpected movement of the valve body portion VB. Furthermore, the ribs also function as guides when the valve body VB moves into the liquid reservoir cylinder 5a1 when the pressurized sprayer changes from an inverted to an upright position.

[0038] The top cover portion 5b has a receiving portion 5b1a that accommodates the valve body portion VB when the device is inverted, thereby preventing the valve body portion VB from moving to a position other than its predetermined location when the device is inverted. As a result, even when the pressurized sprayer A is repeatedly in an upright and inverted state, it is possible to properly spray the liquid in the container 1.

[0039] The pipe section 5b2 serves as a flow path connecting the hollow section of the bottom cover section 5a and the pressure accumulation mechanism section S. In other words, the inside of the bottom cover section 5a branches into two from the mounting section 5a2 side: one side which communicates with the pipe section 5b2 and the other side which connects to the liquid reservoir cylinder section 5a1. On the other hand, in the top cover section 5b, the inside of the covered cylindrical section 5b1 and the inside of the pipe section 5b2 are separated by a wall and are independent of each other. The two are in communication through the hollow section 5a3 of the bottom cover section 5a.

[0040] Both the bottom cover portion 5a and the top cover portion 5b are made of resin and are attached by engagement. More specifically, the two sections are attached to each other by sandwiching a portion of the outer wall forming the hollow section 5a3 between the outer walls of the two-layered pipe section 5b2. At this time, the bottom cover portion 5a and the top cover portion 5b are provided with corresponding fins, which engage with each other to position them. As a result, both the bottom cover portion 5a and the top cover portion 5b are positioned relative to each other, making it possible to ensure a liquid flow path in both the upright and inverted positions.

[0041] In the upright inverted pressurized sprayer A, when in the upright position, the liquid drawn up from the container 1 into the tube 2 flows through the bottom cover section 5a, more specifically the mounting section 5a2, the hollow section 5a3, and then through the pipe section 5b2 of the top cover section 5b into the piston cylinder 3.

[0042] Figure 3 is a cross-sectional view showing the inverted mechanism 5 in the upright position. As described above, in the inverted state, the valve body VB is housed in the receiving portion 5b1a, and the liquid reservoir cylinder portion 5a1 opens. In the inverted pressurized sprayer A, when inverted, the liquid from the container 1 flows in the following order: covered cylindrical section 5b1, suction port 6, liquid reservoir section 5a1, hollow section 5a3, and pipe section 5b2, before flowing into the piston cylinder 3.

[0043] The following describes a spraying method using the pressurized sprayer of the present invention. Figure 4 is an explanatory diagram showing the flow of liquid in an upright position. The arrows indicate the direction of liquid flow. In the upright position, the end of tube 2 is immersed in the liquid inside container 1. Furthermore, the piston cylinder section 3 is filled with fluid. Furthermore, the valve body VB is placed on the valve seat VS of the liquid reservoir cylinder 5a1, closing the covered cylindrical portion 5b1 and the hollow portion 5a3 of the top cover portion 5b.

[0044] When the trigger unit T is rotated, the piston 3a, which is linked to the trigger unit T, moves toward the fast valve FV. At this time, the first valve FV is closed, and the liquid inside the piston 3a, which has been pressurized by the movement of the piston 3a, flows into the flow path section 4.

[0045] The flow path section 4 is normally closed by the second valve SV. As liquid flows from piston 3a into flow path 4, the second valve SV is pushed upward and opens. As a result, the pressurized liquid is sprayed outwards from the nozzle N.

[0046] When the liquid in the flow path section 4 is sprayed to the outside through the nozzle, the liquid pressure in the flow path section 4 decreases, and the second valve SV moves downward due to its spring force and returns to its initial position. This closes the flow path section 4.

[0047] When the spraying is finished and the trigger unit T is released, the trigger unit T returns to its initial position due to a spring (not shown). As a result, the piston 3a, which is linked to the trigger unit T, moves away from the first valve FV, creating negative pressure inside the piston cylinder 3. As a result, the first valve FV opens, drawing the liquid in container 1 into the piston cylinder 3, and filling the piston cylinder 3 with liquid.

[0048] The liquid drawn up from container 1 via tube 2 flows into the mounting portion 5a2 and hollow portion 5a3 of bottom cover portion 5a. At this time, the liquid reservoir cylinder portion 5a1 is closed by the valve body portion VB, preventing air from entering from the receiving portion 5b1a side of the top cover portion 5b. The liquid that flows into the hollow section 5a3 flows into the piston cylinder 3 via the pipe section 5b2 of the top cover section 5b.

[0049] The liquid reservoir cylinder 5a1 is filled with liquid. Therefore, even if liquid flows back from the piston cylinder 3 to the inverting mechanism 5 and the valve body VB floats up due to this backflow, the liquid reservoir cylinder 5a1 is sealed by the liquid stored in it, preventing air from entering from the receiving portion 5b1a side of the top cover 5b.

[0050] Furthermore, when the pressurized sprayer is not filled with liquid, such as during its first use, rotating the trigger T several times (a so-called "dry firing") will expel air from inside the piston 3a through the aforementioned path to the outside via the nozzle, drawing liquid from the container 1 into the piston 3a, thereby enabling the pressurized sprayer to be ready to spray.

[0051] Figure 5 is an explanatory diagram showing the flow of liquid in an inverted state. The arrows indicate the direction of liquid flow. The following discussion of the up and down directions refers to the inverted state. On the other hand, in the inverted state, the end of tube 2 is not submerged in the liquid, and the liquid remaining inside tube 2 is stored at the bottom. Furthermore, the valve body VB moves to the receiving portion 5b1a due to gravity, and the liquid reservoir cylinder portion 5a1 is in an open state.

[0052] When the trigger part T is rotated at this time, the liquid pushed out from the piston cylinder 3 by the movement of the piston 3a flows into the flow path part 4, opening the second valve SV and being sprayed outwards from the nozzle part N, just as in the upright position described above. Similarly, the spray from the nozzle N causes the liquid pressure in the flow path 4 to decrease, and the second valve SV closes the flow path 4.

[0053] Even in the inverted position, the release of the trigger part T causes the trigger part T to return to its initial position, and in conjunction with this, the piston 3a moves, creating negative pressure inside the piston cylinder 3. This draws the liquid from container 1 into the piston cylinder 3.

[0054] Figure 6 is a cross-sectional perspective view showing the liquid intake port 6. The liquid inside container 1 is drawn from inside container 1 into the hollow section 5a3 via the covered cylindrical section 5b1 of the top cover section 5b. More specifically, the gap formed between the rib of the receiving portion 5b1a of the top cover portion 5b and the lower end of the liquid reservoir cylindrical portion 5a1 is the liquid intake port 6, and the liquid inside the container 1 flows from the liquid intake port 6 through the liquid reservoir cylindrical portion 5a1 into the hollow portion 5a3. As described above, since the valve body VB is housed in the receiving part 5b1a, the valve seat VS is open.

[0055] Figure 7 is a side view showing the bottom cover portion 5a. Furthermore, Figure 8 is a cross-sectional view showing the flow channel opening 5a3a, and represents the XX cross-section in Figure 7. Figure 9 is a cross-sectional view showing the opening 5a3b on the side of the pressure accumulation mechanism, and shows a part of the YY cross-section in Figure 7. Figure 10 is a cross-sectional perspective view showing the hollow section 5a3. Figure 7 shows a cross-section from the front when the image is divided in the front-to-back direction. Furthermore, inside the bottom cover section 5a, liquid from the liquid reservoir section 5a1 flows into the hollow section 5a3 through the flow path opening 5a3a provided in the hollow section 5a3. At this time, liquid is stored in the lower part of the tube 2 that is in communication with the hollow section 5a3, and this serves to seal the area. Furthermore, liquid is similarly stored in the mounting portion 5a2, which has a larger diameter than tube 2. Therefore, the sealing effect is enhanced. These features prevent air from entering through tube 2 when spraying in an inverted position. As a result, spraying can be performed properly even when the device is inverted.

[0056] Furthermore, the area M1 of the liquid intake port 6 and the area M2 of the flow path opening 5a3a are, M1>M2 It is designed to have the following relationship:

[0057] Similarly, the area M2 of the flow path opening 5a3a and the area M3 of the pressure accumulation mechanism side opening 5a3b are, M2>M3 It is designed to have this relationship. This prevents a large amount of liquid from instantaneously flowing from the hollow section 5a3 to the connecting section 5b2.

[0058] When spraying in an inverted position, liquid is drawn in from container 1 through the flow path openings 5a3a, and a small amount of liquid stored in tube 2 is also drawn in. If this continues, the liquid that acts as a seal will decrease, allowing air to enter from tube 2, making it impossible to spray properly.

[0059] As the area M1 of the liquid intake port 6, the area M2 of the flow path opening 5a3a, and the area M3 of the pressure accumulation mechanism side opening 5a3b satisfy the above relationship, liquid is vigorously drawn into the hollow section 5a3 from the flow path opening 5a3a, and the suction of liquid from the tube 2 side is suppressed. Therefore, the decrease in the sealing liquid stored in tube 2 is suppressed, and air can be prevented from entering from the tube 2 side. As a result, it becomes possible to continuously apply the correct spray while in an inverted position.

[0060] The liquid that flows into the hollow section 5a3 opens the first valve FV via the pipe section 5b2 of the top cover section 5b, and flows into the inside of the piston cylinder 3. As a result, the piston cylinder 3 is filled with liquid, and by rotating the trigger T again, it becomes possible to spray.

[0061] In the spraying method of the present invention, the liquid flows as described above in both the upright and inverted states, making it possible to properly spray the liquid inside the container 1 from the nozzle to the outside in either state.

[0062] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.

[0063] In this embodiment, the main components are all made of resin, but are not limited to this. For example, a portion of the second valve SV may be made of metal. This increases the spring force that closes the second valve SV, improving the pressure accumulation performance. [Industrial applicability]

[0064] The present invention can be widely used for spraying liquids in both household and industrial applications. [Explanation of Symbols]

[0065] A... Upright / Inverted Pressure Sprayer 1...container 1a...Neck section 2... Tubes S...Pressure accumulation mechanism section T...Trigger 3. Piston Cylinder 3a...piston FV... First Valve N... Nozzle section 4. Flow channel section SV...Second valve 5... Normal inversion mechanism section 5a...Bottom cover section 5a1...Liquid reservoir cylinder 5a2...Mounting part 5a3...Hollow part 5a3a...flow channel opening 5a3b...Accumulation mechanism side opening 5b...Top cover section 5b1...Cylinder with lid 5b1...Receiving part 5b2...Pipe section VB... Valve body 6. Liquid intake port 7. Cap section M1... Area of ​​the liquid intake port M2... Area of ​​the flow channel opening M3... Area of ​​the opening on the side of the pressure accumulation mechanism

Claims

1. It comprises a container for storing liquid, a pressure accumulation mechanism attached to the container, a forward / backward inversion mechanism attached to the pressure accumulation mechanism, and a tube attached to the forward / backward inversion mechanism, An upright and inverted pressurized sprayer that sprays the liquid inside the container to the outside from the pressurizing mechanism via the upright / inverted mechanism, in both upright and inverted positions. The inverting mechanism comprises a bottom cover portion located on the container side and a top cover portion located on the pressure accumulation mechanism side. The bottom cover portion is formed with a hollow section, a liquid reservoir cylinder section communicating with the hollow section and having a valve body section located inside, and a mounting section for attaching the tube. In the upright position, the liquid in the container flows through the hollow section and the top cover section and is sprayed out from the pressure accumulation mechanism section to the outside; in the inverted position, the liquid in the container flows through the liquid reservoir cylinder section, the hollow section, and the top cover section and is sprayed out from the pressure accumulation mechanism section to the outside. The area M2 of the flow path opening provided in the bottom cover portion through which the liquid flowing via the top cover portion passes is The area M3 of the opening on the pressure accumulation mechanism side that communicates with the top cover portion, provided in the hollow portion, M2 > M3 A forward and inverted pressure-accumulating sprayer having the following relationship.

2. The bottom cover portion further has a hollow portion where the liquid flow path from the tube and the liquid flow path from the top cover portion merge, The inverted pressurized sprayer according to claim 1, wherein the hollow portion is located inside the neck portion of the container.

3. The area M1 of the liquid intake port provided between the top cover portion and the bottom cover portion, The area M2 of the aforementioned flow channel opening is M1 > M2 A forward and inverted pressure-accumulating sprayer according to claim 1, having the relationship described above.

4. The area M3 of the opening on the pressure accumulation mechanism side is 0.15 mm². ２ ~10.3mm ２ The forward and inverted pressure-accumulating sprayer according to claim 1.

5. The tube is fitted into the aforementioned mounting portion by being inserted into it. The volume of the mounting portion is 26 mm ３ The above is the forward and inverted pressure-accumulating sprayer according to claim 1.

6. The top cover portion is formed with a lidded cylindrical portion that is open on the container side, and a tubular portion adjacent to the lidded cylindrical portion. The liquid reservoir section is inserted into the covered cylindrical section. The aforementioned pressure accumulation mechanism, The trigger section, A piston cylinder having a piston that moves by the rotation of the trigger part, A first valve that opens and closes between the tube and the piston cylinder, The nozzle part from which the liquid is sprayed, A flow path section connecting the piston cylinder and the nozzle section, A second valve that opens and closes the flow path, A cap portion that screws onto the aforementioned container, Equipped with, The inverted / upright mechanism is positioned by screwing the cap portion onto the container. In the upright position, the liquid reservoir cylinder is closed by the valve body, and the liquid drawn up from the tube is sprayed from the nozzle through the hollow section and the pipe section. In an inverted state, the liquid reservoir cylinder is opened, and the liquid from the container is sprayed from the nozzle through the covered cylindrical part, the liquid reservoir cylinder, the hollow part, and the tubular part, according to any one of claims 1 to 5.

7. A spraying method using an inverted pressurized sprayer according to claim 6, In the upright position, by rotating the trigger portion with the container lower than the pressure accumulation mechanism portion, liquid flows from the container to the hollow portion and the tube portion and is sprayed from the nozzle portion. In an inverted state, the trigger is rotated with the container positioned above the pressure accumulation mechanism, causing liquid to flow from the container to the covered cylindrical section, the liquid reservoir section, the hollow section, and the pipe section, and then sprayed from the nozzle section.

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