Pressure storage spray pump and pressure storage spray device

Abstract

A pressure storage type spray pump can achieve continuous spraying with a simple and small structure and at low cost, and it has good safety performance. It includes a main column and a cylinder body. A fluid passage extending axially is formed inside the main column, and the cylinder body houses the working liquid. It also includes a one-way valve mechanism, a storage chamber, and an upper elastic mechanism. The storage chamber is formed between the one-way valve mechanism and the upper elastic mechanism. The one-way valve mechanism is configured to open only when the main column is pressed and only allow the working liquid to flow from the cylinder body into the storage chamber. The upper elastic mechanism is configured to be displaceable relative to the main column between an initial position and a maximum compression position, displace towards the maximum compression position when the main column is pressed to fluidly connect the storage chamber and the fluid passage, and displace towards the initial position when the main column is released.

Description

Technical Field

[0001] The present invention relates to a pressure storage type spray pump and a pressure storage type spray device. Background Art

[0002] In recent years, push-type spray pumps have been widely used in daily life, especially widely applied to products such as daily chemicals, skin care products, cosmetics, and pharmaceuticals.

[0003] However, most of the spray devices currently used in the market are discontinuous spraying, spraying once every time the pump is pressed. Therefore, in the case of needing to perform multiple sprays, the operation is relatively cumbersome. In addition, at the beginning and end of each spray, there will be droplets with poor atomization effect dripping from the nozzle. Therefore, in the case of frequent pressing, it will cause waste of the product.

[0004] For this reason, currently two continuous spraying technologies have been proposed. One is the technology developed by AFA DispnsingGroup (for example, International Publication WO2012-061764A1), which can achieve continuous spraying. The other achieves the effect of continuous spraying by using an aerosol (gas propellant). The technology (for example, International Publication WO2012-061764A1) can achieve continuous spraying, and the other achieves the effect of continuous spraying by using an aerosol (gas propellant).

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: International Publication WO2012-061764A1 Summary of the Invention

[0008] Technical Problems to be Solved by the Invention

[0009] However, in the case of adopting the technology, the internal structure of the spray pump will become complex, and its volume will also become large, resulting in high production cost and expensive price of the spray pump.

[0010] On the other hand, in the case of achieving continuous spraying by using an aerosol, since the aerosol usually contains organic alkane gas as the gas propellant, the spray device adopting this technology has potential safety hazards, and the production and manufacturing cost is also relatively high.

[0011] The present invention is formed to solve the above technical problems, and its purpose is to provide a pressure storage type spray pump and a pressure storage type spray device, which can achieve continuous spraying with a simple and small structure and low cost, and have good safety performance.

[0012] Technical Solutions for Solving the Technical Problems

[0013] The pressure storage type spray pump according to the first aspect of the present invention includes a main column and a cylinder body. A fluid passage extending axially is formed inside the main column. The cylinder body houses a working liquid and the main column is inserted therein. It is characterized in that,

[0014] It further includes a one-way valve mechanism, a storage chamber, and an upper elastic mechanism arranged axially between the main column and the cylinder body,

[0015] The storage chamber is formed between the one-way valve mechanism and the upper elastic mechanism,

[0016] The one-way valve mechanism is configured to open only when the main column is pressed and only allow the working liquid to flow from the cylinder body into the storage chamber,

[0017] The upper elastic mechanism is configured to be displaceable relative to the main column between an initial position and a maximum compression position. When the main column is pressed, it displaces toward the maximum compression position to fluidly connect the storage chamber and the fluid passage, and when the main column is released, it displaces toward the initial position.

[0018] Based on the pressure storage type spray pump according to the first aspect of the present invention, in the pressure storage type spray pump according to the second aspect of the present invention, preferably,

[0019] The one-way valve mechanism includes:

[0020] A second piston, which is arranged axially with the upper elastic mechanism across the storage chamber and fixed to the main column. The second piston is formed with a through hole penetrating the second piston axially;

[0021] A second elastic body, which axially connects the main column and the cylinder body, or axially connects the second piston and the cylinder body; and

[0022] An elastic separator, which is configured to cover the through hole,

[0023] By pressing the main column, the elastic separator deforms to open the through hole.

[0024] Based on the pressure storage type spray pump according to the second aspect of the present invention, in the pressure storage type spray pump according to the third aspect of the present invention, preferably, the second piston is formed with a plurality of the through holes at equal intervals in the circumferential direction.

[0025] Based on the pressure storage type spray pump according to the first aspect of the present invention, in the pressure storage type spray pump according to the fourth aspect of the present invention, preferably,

[0026] The one-way valve mechanism includes:

[0027] A ring-shaped second piston, which is arranged axially with the upper elastic mechanism across the storage chamber; and

[0028] A second spring, which axially connects the main column and the cylinder block,

[0029] A groove extending axially is formed on the inner surface of the second piston,

[0030] At one end of the second piston away from the storage chamber, a ring-shaped flange protruding radially inward is formed, and the ring-shaped flange is in seamless contact with the outer surface of the main column in the radial direction of the main column,

[0031] By pressing the main column, the ring-shaped flange is separated from the outer surface of the main column, and the cylinder block and the storage chamber are in fluid communication through the groove.

[0032] Based on the pressure storage type spray pump described in the fourth aspect of the present invention, in the pressure storage type spray pump of the fifth aspect of the present invention, preferably, a plurality of the grooves are formed at equal intervals in the circumferential direction on the inner surface of the second piston.

[0033] Based on the pressure storage type spray pump described in the first aspect of the present invention, in the pressure storage type spray pump of the sixth aspect of the present invention, preferably,

[0034] The one-way valve mechanism includes:

[0035] A ring-shaped second piston, which is arranged axially with the upper elastic mechanism across the storage chamber;

[0036] A sub-column, which is fixedly connected to one end of the main column close to the second piston, and the sub-column is in seamless contact with the second piston axially; and

[0037] A second spring, which axially connects the sub-column and the cylinder block,

[0038] A groove extending axially is formed on the inner surface of the second piston,

[0039] By pressing the main column, the second piston is separated from the sub-column, and the cylinder block and the storage chamber are in fluid communication through the groove.

[0040] Based on the pressure storage type spray pump described in the sixth aspect of the present invention, in the pressure storage type spray pump of the seventh aspect of the present invention, preferably, a plurality of the grooves are formed at equal intervals in the circumferential direction on the inner surface of the second piston.

[0041] Based on the pressure storage type spray pump described in any one of the first to seventh aspects of the present invention, in the pressure storage type spray pump of the eighth aspect of the present invention, preferably,

[0042] Fine holes communicating with the fluid passage are formed on the side wall of the main column.

[0043] When the upper elastic mechanism is in the initial position, the fine holes are closed by the upper elastic mechanism.

[0044] By pressing the main column, the fine holes are opened to fluidly connect the storage chamber and the fluid passage.

[0045] Based on the pressure storage type spray pump described in the eighth aspect of the present invention, in the pressure storage type spray pump of the ninth aspect of the present invention, preferably, a plurality of the fine holes are formed at equal intervals in the circumferential direction on the side wall of the main column.

[0046] Based on the pressure storage type spray pump described in any one of the second to seventh aspects of the present invention, in the pressure storage type spray pump of the tenth aspect of the present invention, preferably, a stop portion is formed on one surface of the second piston facing the upper elastic mechanism, and the stop portion is configured to receive the upper elastic mechanism to make the upper elastic mechanism in the initial position.

[0047] Based on the pressure storage type spray pump described in any one of the second to eighth aspects of the present invention, in the pressure storage type spray pumps of the eleventh to thirteenth aspects of the present invention, preferably,

[0048] The upper elastic mechanism includes:

[0049] A first piston, the first piston is disposed between the main column and the cylinder block, and the first piston and the second piston face each other across the storage chamber along the axial direction; and

[0050] A first elastic body, the first elastic body connects the main column and the first piston along the axial direction.

[0051] The fourteenth aspect of the present invention relates to a pressure storage type spray device, which is characterized by including:

[0052] The pressure storage type spray pump described in any one of the first to thirteenth aspects; and

[0053] A push-button nozzle, the push-button nozzle cooperates with the pressure storage type spray pump to apply a force to the main column of the pressure storage type spray pump along the axial direction.

[0054] Based on the pressure storage type spray device described in the fourteenth aspect of the present invention, in the pressure storage type spray device of the fifteenth aspect of the present invention, preferably, it further includes a cover member, and the cover member is configured to accommodate the cylinder body into which the main column is inserted inside.

[0055] Based on the pressure storage type spray device described in the fifteenth aspect of the present invention, in the pressure storage type spray device of the sixteenth aspect of the present invention, preferably, the cover member is a screw cap with internal threads formed on the inner wall.

[0056] Advantages of the Invention

[0057] According to the present invention, it is possible to provide a pressure storage type spray pump and a pressure storage type spray device including the pressure storage type spray pump, which can achieve continuous and uninterrupted spraying with a simple and small structure and low cost, and has good safety performance. In addition, since the present invention can achieve continuous and uninterrupted spraying, the working liquid can be evenly sprayed onto the target object. Description of the Drawings

[0058] Figure 1 It is a perspective view of a pressure storage type spray device including a pressure storage type spray pump according to the first embodiment of the present invention.

[0059] Figure 2 It is a perspective view of the pressure storage type spray pump according to the first embodiment of the present invention.

[0060] Figure 3 It is a cross-sectional view of the pressure storage type spray pump according to the first embodiment of the present invention, showing the internal structure of the pressure storage type spray pump in the initial state.

[0061] Figure 4A It is a perspective view of the second piston constituting the pressure storage type spray pump according to the first embodiment of the present invention.

[0062] Figure 4B It represents Figure 4A a cross-sectional view of the second piston.

[0063] Figure 5A It is a perspective view of the elastic isolation member constituting the pressure storage type spray pump according to the first embodiment of the present invention.

[0064] Figure 5B It represents Figure 4A a cross-sectional view of the elastic isolation member.

[0065] Figure 6 It is a cross-sectional view of the pressure storage type spray pump according to the first embodiment of the present invention in the pressed state.

[0066] Figure 7It is a cross-sectional view of the pressure storage type spray pump according to the first embodiment of the present invention in a released state.

[0067] Figure 8 It is a cross-sectional view of the pressure storage type spray pump according to the second embodiment of the present invention, showing the internal structure of the pressure storage type spray pump in an initial state.

[0068] Figure 9A It is a perspective view of the second piston constituting the pressure storage type spray pump according to the second embodiment of the present invention.

[0069] Figure 9B It is shown Figure 9A a cross-sectional view of the second piston of

[0070] Figure 10 It is a cross-sectional view of the pressure storage type spray pump according to the second embodiment of the present invention in a pressed state.

[0071] Figure 11 It is a cross-sectional view of the pressure storage type spray pump according to the second embodiment of the present invention in a released state.

[0072] Figure 12 It is a cross-sectional view of the pressure storage type spray pump according to the third embodiment of the present invention, showing the internal structure of the pressure storage type spray pump in an initial state.

[0073] Figure 13A It is a perspective view of the second piston constituting the pressure storage type spray pump according to the third embodiment of the present invention.

[0074] Figure 13B It is shown Figure 13A a cross-sectional view of the second piston of

[0075] Figure 14A It is a cross-sectional view of the auxiliary column constituting the pressure storage type spray pump according to the third embodiment of the present invention.

[0076] Figure 14B It is shown Figure 14A a cross-sectional view of the auxiliary column of

[0077] Figure 15 It is a cross-sectional view of the pressure storage type spray pump according to the third embodiment of the present invention in a pressed state.

[0078] Figure 16 It is a cross-sectional view of the pressure storage type spray pump according to the third embodiment of the present invention in a released state.

[0079] Symbol Explanation

[0080] A Pressure storage type spray device

[0081] P1, P2, P3 Pressure storage type spray pump

[0082] 1 Press-type nozzle

[0083] 2 Straw

[0084] C Cover member

[0085] C1 Thread

[0086] 3 Cylinder block

[0087] 31 Large-diameter part

[0088] 32 Small-diameter part

[0089] 33 Liquid inlet part

[0090] B Ball

[0091] 4 Main column

[0092] 41 Fluid passage

[0093] 42 Flange part

[0094] 43 Fine hole

[0095] 5 First piston

[0096] 6 First spring

[0097] 7A, 7B, 7C Second piston

[0098] 8A, 8B, 8C Second spring

[0099] 9 Elastic spacer

[0100] 91 Columnar part

[0101] 92 Ring-shaped plate part

[0102] 10 Through hole

[0103] 7A1, 7B1, 7C1 Main body part

[0104] 7A2, 7B2, 7C2 Upper flange part

[0105] 7A3, 7B3, 7C3 Side flange part

[0106] 7B4 Stopping part

[0107] 7B5 Ring-shaped flange

[0108] 11 Groove

[0109] 12 Sub-column

[0110] 12A Axial insertion part

[0111] 12B Protruding flange part

[0112] M storage chamber

[0113] Chamber below LM Detailed implementation mode

[0114] Next, with reference to the accompanying drawings, the pressure storage type spray pump and the structure of the pressure storage type spray pump according to each embodiment of the present invention will be described in detail.

[0115] - First embodiment -

[0116] Figure 1 A perspective view of a pressure storage type spray device A including a pressure storage type spray pump P1 according to the first embodiment of the present invention is shown. As Figure 1 shown, the pressure storage type spray device A includes a push - type nozzle 1, a cover member C, a pressure storage type spray pump P1, and a straw 2. The push - type nozzle 1 can be a commercially available conventional nozzle, and the user can manually press the push - type nozzle 1 to perform spraying. The push - type nozzle 1 is fitted into the cover member C, and the cover member C is a member for fixing the pressure storage type spray device A to a bottle body (not shown). In the present embodiment, the cover member C is a screw - threaded cap with an inner wall surface formed with a thread C1, and by mating with the thread formed on the bottle mouth, the pressure storage type spray device A is connected to the bottle body to be used. In addition, the cover member C is provided with the pressure storage type spray pump P1 described later disposed inside it. Further, a straw 2 is connected to the lower end of the pressure storage type spray pump P1, and the straw 2 is used to supply the working liquid (spraying liquid) from the bottle into the cylinder 3 described later of the pressure storage type spray pump P1.

[0117] Figure 2 A perspective view of the pressure storage type spray pump P1 according to the first embodiment of the present invention is shown, Figure 3 A cross - sectional view of a pressure storage type spray device A including a pressure storage type spray pump P1 according to the first embodiment of the present invention is shown. As Figure 2 and Figure 3 shown, the pressure storage type spray pump P1 includes a cylinder 3 and a main column 4. The cylinder 3 is a cylindrical member with openings at both the upper and lower ends, having a large - diameter portion 31, a small - diameter portion 32, and a liquid inlet portion 33. A part of the main column 4 described later, a part of the check valve mechanism described later, and the upper elastic mechanism described later are accommodated in the large - diameter portion 31. Another part of the check valve mechanism described later and a steel ball B are accommodated in the small - diameter portion 32. The above - mentioned straw 2 is inserted into the liquid inlet portion 33. In addition, as Figure 3 shown, the cylinder 3 is fixed to the cover member C by an interference - fit method. The main column 4 is a thin cylindrical member with an open upper end and a closed lower end. As Figure 3As shown, a fluid passage 41 for the flow of gas or working liquid is formed inside. In addition, an annular flange portion 42 is formed integrally around the substantially middle portion of the main column 4 in the axial direction of the main column 4. The flange portion 42 is used to fix a first spring 6 described later that constitutes the upper elastic mechanism of the present embodiment. Further, a fine hole 43 is formed at a position near the lower end portion of the main column 4 in the axial direction, penetrating the side wall of the main column 4 in the radial direction. Air or working liquid that enters and is stored in a storage chamber M described later enters the fluid passage 41 through the fine hole 43 and is ejected from the fluid passage 41 to the outside at high speed via a push-type nozzle 1.

[0118] To achieve a pressure storage type spraying effect, the pressure storage type spray pump P1 further includes a first one-way valve mechanism and an upper elastic mechanism that constitute a one-way valve type pressure storage unit.

[0119] Specifically, in the present embodiment, as Figure 3 shown, the upper elastic mechanism includes a first piston 5 and a first spring 6 as an example of a first elastic member. The first piston 5 is an annular member disposed between the cylinder block 3 and the main column 4. The inner surface thereof is in seamless contact with the outer side surface of the main column 4 in the radial direction, and the outer surface thereof is in seamless contact with the inner wall surface of the cylinder block 3 in the radial direction. That is, it is almost impossible for air or working liquid to flow from below the first piston 5 to above, or from above the first piston 5 to below. The first spring 6 is arranged along the axial direction, with one end connected to the flange portion 42 and the other end connected to the first piston 5. In the above manner, the first piston 5 and the first spring 6 constitute the upper elastic mechanism of the present embodiment.

[0120] On the other hand, also as Figure 3 shown, the first one-way valve mechanism includes a second piston 7A, a second spring 8A, and an elastic separator 9.

[0121] Regarding the second piston 7A, Figure 4A shows a perspective view of the second piston 7A, Figure 4B shows a cross-sectional view of the second piston 7A. As Figure 3 , 4A and 4B show, the second piston 7A is a substantially annular member disposed between the cylinder block 3 and the main column 4, having a hollow main body portion 7A1, an upper flange portion 7A2, and a side flange portion 7A3. The upper flange portion 7A2 is formed at the upper end of the main body portion 7A1 and protrudes radially outward, and the side flange portion 7A3 is formed at the outer edge in the radial direction of the upper flange portion 7A2 and extends downward along the axial direction. In a state where the second piston 7A is disposed between the cylinder block 3 and the main column 4, the inner peripheral surface of the main body portion 7A1 is in seamless contact with the outer side surface of the main column 4 in the radial direction, and the side flange portion 7A3 is in seamless contact with the inner wall surface of the cylinder block 3 in the radial direction. In addition, as Figure 4A and 4BAs shown, a plurality (here, four) of through holes 10 penetrating the upper flange portion 7A2 in the axial direction are formed in the second piston 7A. These through holes 10 are for fluidly connecting the small-diameter portion 32 of the cylinder block 3 to a storage chamber M described later. Further, the aperture diameter of the through holes 10 is much larger than the aperture diameter of the fine holes 43.

[0122] The second spring 8A is arranged in the axial direction, with one end connected to the end portion of the main column 4 and the other end connected to the end portion of the cylinder block 3.

[0123] In addition, regarding the elastic separator 9, Figure 5A A perspective view of the elastic separator 9 is shown. Figure 5B A cross-sectional view of the elastic separator 9 is shown. As Figure 5A and 5B shown, the elastic separator 9 is a hollow, substantially disc-shaped member, and is arranged between the cylinder block 3 and the main column 4 and adjacent to the upper side of the second piston 7A as Figure 3 shown. It has a hollow columnar portion 91 and an annular plate portion 92. The annular plate portion 92 is formed along the entire outer peripheral surface of the columnar portion 91 and is formed in a shape that slopes downward as it moves radially away from the columnar portion 91. The annular plate portion 92 is composed of an elastic thin plate and can elastically deform in the axial direction relative to the columnar portion 91. Further, as Figure 3 shown, when the elastic separator 9 is arranged between the cylinder block 3 and the main column 4, the columnar portion 91 is supported on the upper surface of the second piston 7A (accurately speaking, the main body portion 7A1), and the annular plate portion 92 covers the through holes 10 from above.

[0124] In the above-described manner, the second piston 7A, the second spring 8A, and the elastic separator 9 constitute the first one-way valve mechanism of the present embodiment.

[0125] In addition, as Figure 3 shown, when the upper elastic mechanism and the one-way valve mechanism constituting the one-way valve type pressure storage unit of the present embodiment are arranged between the cylinder block 3 and the main column 4, a storage chamber M with a variable volume is formed between the cylinder block 3 and the main column 4. Specifically, as air or working liquid flows into the storage chamber M, the volume of the storage chamber M increases, and as air or working liquid flows out of the storage chamber M, the volume of the storage chamber M decreases. This will be described in detail later.

[0126] Next, on the basis of the above structure, with reference to Figure 3 、 Figure 6 and Figure 7 , the operating principles of the pressure storage type spray pump P1 and the pressure storage type spray device A of the present embodiment will be described in detail.

[0127] Figure 3A cross-sectional view of the pressure storage type spray pump P1 in the initial state is shown. In the initial state, the first piston 5 contacts the columnar portion 91 of the elastic separator 9 to close the fine hole 43, so that the storage chamber M and the fluid passage 41 of the main column 4 are in a non-connecting state.

[0128] When initially using the pressure storage type spray pump P1 and the pressure storage type spray device A of this embodiment, air may exist in the storage chamber M and the space below the second piston 7A in the cylinder block 3 (hereinafter referred to as the lower chamber LM). First, the push-type nozzle 1 is pressed so that the main column 4 connected to the push-type nozzle 1 and the second piston 7A connected to the main column 4 move downward axially against the second spring 8A. At this time, since the steel ball B closes the connection port between the small-diameter portion 32 and the liquid inlet portion 33, the air in the lower chamber LM cannot be discharged from below.

[0129] At the same time, since the air in the lower chamber LM is compressed, the pressure in the lower chamber LM becomes greater than the pressure in the storage chamber M. Therefore, as Figure 6 shown, under the action of the pressure difference, the annular plate portion 92 of the elastic separator 9 deforms upward to open the through hole 10, and the air in the lower chamber LM flows into the storage chamber M. Then, with the inflow of air, the first piston 5 moves upward axially against the first spring 6, and the fine hole 43 originally closed by the side surface of the first piston 5 opens, so that the storage chamber M and the fluid passage 41 in the main column 4 are in fluid communication, and the air in the storage chamber M flows into the fluid passage through the fine hole 43. However, since the aperture of the through hole 10 is much larger than the aperture of the fine hole 43, the amount of air flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of air flowing from the storage chamber M into the fluid passage 41 per unit time. From the entire pressing process, the volume of the storage chamber M becomes larger, and the first piston 5 continuously moves upward axially against the first spring 6.

[0130] When the push-type nozzle 1 is pressed until the upper elastic mechanism is displaced to the maximum compression position (for example, the compression deformation of the first spring 6 reaches the maximum elastic compression position or the lower end of the push-type nozzle 1 abuts against the cover member C), the push-type nozzle 1 is released. At this time, under the action of the restoring force of the second spring 8A, the main column 4 and the second piston 7A move upward axially. And, since the pressure in the storage chamber M is greater than the pressure in the lower chamber LM, the annular plate portion 92 of the elastic separator 9 returns to the initial state to close the through hole 10. That is, the pressure storage type spray device A changes from Figure 6 the pressed state to Figure 7Release state. At the same time, under the action of the restoring force of the first spring 6, the first piston 5 moves downward to apply force to the air in the storage chamber M, so that the air flows into the fluid passage 41 through the fine hole 43 faster until the first piston 5 moves to the initial position where it abuts against the columnar portion 91 of the elastic separator 9 and closes the fine hole 43. Thus, the pressure storage type spray device A returns from Figure 7 the release state to Figure 3 the initial state. On the other hand, during the release process, since the pressure in the liquid inlet portion 33 is greater than the pressure in the lower chamber LM, the steel ball B is pushed upward, and air or the working liquid continuously flows into the lower chamber LM from the liquid inlet portion 33. Thus, the working liquid is stored in the lower chamber LM.

[0131] By repeatedly pressing and releasing the push-type nozzle 1 as described above, the lower chamber LM will be filled with the working fluid.

[0132] Next, by pressing the push-type nozzle 1, the main column 4 connected to the push-type nozzle 1 and the second piston 7A connected to the main column 4 are moved downward axially against the second spring 8A. At this time, since the steel ball B closes the connection port between the small-diameter portion 32 and the liquid inlet portion 33, the working liquid in the lower chamber LM cannot be discharged downward.

[0133] At this time, since the working liquid has an almost incompressible property, when the working liquid in the lower chamber LM is squeezed, the liquid pressure in the lower chamber LM is greater than the pressure in the storage chamber M. Therefore, as Figure 6 shown, under the action of the pressure difference, the annular plate portion 92 of the elastic separator 9 deforms upward to open the through hole 10, and the working liquid in the lower chamber LM flows into the storage chamber M. Then, with the inflow of the working liquid, the first piston 5 moves upward axially against the first spring 6, and the fine hole 43 originally closed by the side surface of the first piston 5 is opened, making the storage chamber M and the fluid passage 41 in the main column 4 in fluid communication, and the working liquid in the storage chamber M flows into the fluid passage through the fine hole 43. However, since the aperture of the through hole 10 is much larger than the aperture of the fine hole 43, the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. From the entire pressing process, the volume of the storage chamber M becomes larger, and the first piston 5 continuously moves upward axially against the first spring 6.

[0134] At the same time, due to the incompressibility of the working liquid, the steel ball B is always in the closed state, and the working liquid in the liquid inlet portion 33 cannot flow into the lower chamber LM.

[0135] When the push - type nozzle 1 is pressed until the upper elastic mechanism is displaced to the maximum compression position (for example, the compression deformation of the first spring 6 reaches the maximum elastic compression position or the lower end of the push - type nozzle 1 abuts against the cover member C), the push - type nozzle 1 is released. At this time, under the action of the restoring force of the second spring 8A, the main column 4 and the second piston 7A move upward along the axial direction, so that the pressure in the lower chamber LM becomes negative pressure. Therefore, the annular plate portion 92 of the elastic separator 9 returns to the initial state and closes the through - hole 10. That is, the pressure - storage type spray device A changes from Figure 6 the pressed state to Figure 7 the released state. At the same time, under the action of the restoring force of the first spring 6, the first piston 5 moves downward to apply force to the working liquid in the storage chamber M, so that the working liquid flows into the fluid passage 41 through the fine hole 43 faster until the first piston 5 moves to the initial position where it abuts against the columnar portion 91 of the elastic separator 9 and closes the fine hole 43. Thus, the pressure - storage type spray device A returns from Figure 7 the released state to Figure 3 the initial state. On the other hand, since the pressure in the lower chamber LM becomes negative pressure, the steel ball B is pushed upward, and the working liquid continuously flows into the lower chamber LM from the liquid inlet portion 33. Thus, the lower chamber LM is always filled with the working liquid.

[0136] In addition, as described above, the aperture of the through - hole 10 is much larger than the aperture of the fine hole 43, and the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. Therefore, through one or more presses and releases, the working liquid can continuously spray out to the outside from the storage chamber M through the fine hole 43 and the fluid passage 41. That is, based on the above structure, through one or more presses and releases, the effect of continuous spraying can be achieved.

[0137] -Technical effects of the first embodiment-

[0138] Different from the existing spray devices, in this embodiment, a pressure - storage type spray pump P1 is adopted, which includes a cylinder block 3, a main column 4, and a one - way valve type pressure - storage unit. The one - way valve type pressure - storage unit includes a first one - way valve mechanism and an upper elastic mechanism. Among them, the upper elastic mechanism includes a first piston 5 and a first spring 6, and the first one - way valve mechanism includes a second piston 7A having a through - hole 10, a second spring 8A, and an elastic separator 9 for opening and closing the through - hole 10.

[0139] By pressing the pressing type nozzle 1, the annular plate portion 92 of the elastic separator 9 deforms upward, the through hole 10 opens, enabling the working liquid in the lower chamber LM of the cylinder body 3 to flow into the storage chamber M between the first piston 5 and the second piston 7A. At the same time, the first piston 5 moves upward under the pressure of the working liquid flowing into the storage chamber M, and the volume of the storage chamber M continuously increases. Then, by releasing the pressing type nozzle 1, the annular plate portion 92 of the elastic separator 9 returns to its initial state, and the through hole 10 is closed. Moreover, the first piston 5 moves downward under the action of the first spring 6 in the compressed state, and the second piston 7A moves upward under the action of the second spring 8A in the compressed state. Thus, pressure is applied to the working liquid, enabling the working liquid to flow into the fluid passage 41 through the fine holes 43 formed in the side wall of the main column 4, and then continuously spray out to the outside from the fluid passage 41. In this way, by repeatedly pressing and releasing the pressing type nozzle 1, more and more working liquid is stored in the storage chamber M, thereby being able to extend the spraying time and achieve the effect of continuous spraying.

[0140] That is to say, compared with the pressure storage type spraying technology with a complex structure in the prior art, in this embodiment, a first one-way valve mechanism with a simple structure is adopted. By virtue of the characteristics of this first one-way valve mechanism, the effect of continuous spraying can be easily achieved by repeatedly pressing and releasing the nozzle.

[0141] In addition, compared with the existing non-pressure storage type spraying technology, the working liquid can be sprayed more evenly onto the target. Specifically, for example, when cleaning the glass of a window, if a non-pressure storage type spraying device is used, it is necessary to spray different positions of the glass separately. As a result, due to changes in factors such as the pressing force, the spraying amount at each position may be different and uneven. In contrast, by adopting the pressure storage type spraying technology of the present invention, only by moving the spraying device, the working liquid can cover the entire glass. And since this spraying process is not affected by the pressing force, as long as the spraying device is moved at a constant speed, the working liquid can be evenly sprayed onto the entire glass.

[0142] -Second Embodiment-

[0143] Next, with reference to Figure 8 、 9A and 9B, the structure of the pressure storage type spray pump P2 of the second embodiment of the present invention will be described. It should be noted that the difference between this embodiment and the first embodiment lies in the structure of the second one-way valve mechanism. Except for this, the structure of the pressure storage type spray pump P1 in the first embodiment is the same. Therefore, here, only the structure of the second one-way valve mechanism in this embodiment will be described, and the description of other parts will be omitted.

[0144] Figure 8The cross-sectional view of the pressure storage type spray pump P2 according to the second embodiment of the present invention is shown. As Figure 8 shown, the pressure storage type spray pump P2 of the present embodiment includes a cylinder block 3, a main column 4, and a second one-way valve mechanism and an upper elastic mechanism that constitute a one-way valve type pressure storage unit. Different from the first one-way valve mechanism of the first embodiment, the second one-way valve mechanism includes a second piston 7B and a second spring 8B.

[0145] Regarding the second piston 7B, Figure 9A the perspective view of the second piston 7B is shown, Figure 9B and the cross-sectional view of the second piston 7B is shown. As Figure 8 、 9A and 9B show, the second piston 7B is a substantially annular member disposed between the cylinder block 3 and the main column 4. The second piston 7B is provided separately from the main column 4 and has a hollow main body portion 7B1, an upper flange portion 7B2, a side flange portion 7B3, and a plurality (here four) of stopper portions 7B4. The upper flange portion 7B2 is formed at the upper end of the main body portion 7B1 and protrudes radially outward. The side flange portion 7B3 is formed at the outer radial edge of the upper flange portion 7B2 and extends downward along the axial direction. The plurality of stopper portions 7B4 are formed on the upper surface of the upper flange portion 7B2 so as to protrude upward along the axial direction. In addition, as Figure 9A and 9B show, a ring-shaped flange 7B5 protruding radially inward is formed at the lower end portion of the main body portion 7B1, and the ring-shaped flange 7B5 is used to closely contact the outer side surface of the main column 4, which will be described later. And, a plurality of grooves 11 extending in the axial direction are formed on the inner surface of the main body portion 7B1, and the plurality of grooves 11 are used to allow air or working liquid to flow into the storage chamber M through these grooves. In a state where the second piston 7B is disposed between the cylinder block 3 and the main column 4, the ring-shaped flange 7B5 of the main body portion 7B1 is in seamless contact with the outer side surface of the main column 4 in the radial direction to block the fluid communication between the storage chamber M and the lower chamber LM, and the side flange portion 7B3 is in seamless contact with the inner wall surface of the cylinder block 3 in the radial direction.

[0146] Regarding the second spring 8B, as Figure 8 shown, the second spring 8B is arranged along the axial direction, one end is connected to the end portion of the main column 4, and the other end is connected to the end portion of the cylinder block 3.

[0147] Then, on the basis of the above structure, with reference to Figure 8 、 10 and 11, the working principle of the second one-way valve mechanism of the present embodiment will be described. Here, in order to avoid repeated description, only the case of the working liquid will be described.

[0148] Figure 8A cross-sectional view of the pressure storage type spray pump P2 in the initial state is shown. In the initial state, the first piston 5 contacts the stopper portion 7B4 of the second piston 7B to close the fine hole 43, so that the storage chamber M and the fluid passage 41 of the main column 4 are in a non-communication state.

[0149] First, the push-type nozzle 1 is pressed so that the main column 4 connected to the push-type nozzle 1 moves axially downward against the second spring 8B. At this time, since the steel ball B closes the connection port between the small-diameter portion 32 and the liquid inlet portion 33, the working liquid in the lower chamber LM cannot be discharged downward.

[0150] At the same time, since the main column 4 moves downward relative to the second piston 7B, the annular flange 7B5 of the second piston 7B that was originally in close contact with each other separates from the outer side surface of the main column 4, so that a gap is generated between the second piston 7B and the main column 4. In this way, the working liquid in the lower chamber LM passes through this gap and flows into the storage chamber M along a plurality of grooves 11 formed on the inner surface of the second piston 7B. Then, as the working liquid flows in, the first piston 5 moves axially upward against the first spring 6, and the fine hole 43 originally closed by the side surface of the first piston 5 is opened, so that the storage chamber M and the fluid passage 41 in the main column 4 are in fluid communication, and the working liquid located in the storage chamber M flows into the fluid passage through the fine hole 43. However, since the aperture of the through hole 10 is much larger than the aperture of the fine hole 43, the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. From the entire pressing process, the volume of the storage chamber M becomes larger, and the first piston 5 continuously moves axially upward against the first spring 6.

[0151] At the same time, due to the incompressibility of the working liquid, the steel ball B is always in the closed state, and the working liquid in the liquid inlet portion 33 cannot flow into the lower chamber LM.

[0152] When the push-type nozzle 1 is pressed until the upper elastic mechanism is displaced to the maximum compression position (for example, the compression deformation of the first spring 6 reaches the maximum elastic compression position or the lower end of the push-type nozzle 1 abuts against the cover member C), the push-type nozzle 1 is released. At this time, under the action of the second spring 8B, the main column 4 moves axially upward, and the annular flange 7B5 of the second piston 7B is in seamless close contact with the outer side surface of the main column 4 again, and the gap between the two disappears, and the working liquid in the lower chamber LM cannot flow into the storage chamber M. That is, the pressure storage type spray device A changes from Figure 10 the pressed state to Figure 11The release state. At the same time, under the action of the restoring force of the first spring 6, the first piston 5 moves downward to apply force to the working liquid in the storage chamber M, so that the working liquid flows into the fluid passage 41 through the fine hole 43 faster until the first piston 5 moves to the initial position where it abuts against the stopper portion 7B4 of the second piston 7B and closes the fine hole 43. Thus, the pressure storage type spray pump P2 returns from Figure 11 the release state to Figure 8 the initial state. On the other hand, since the gap between the main column 4 and the second piston 7B disappears, the pressure in the lower chamber LM becomes negative pressure, the steel ball B is pushed upward, and the working liquid continuously flows into the lower chamber LM from the liquid inlet portion 33. Thus, the lower chamber LM is always filled with the working liquid.

[0153] In addition, as described above, the aperture of the through hole 10 is much larger than the aperture of the fine hole 43, and the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. Therefore, through one or more presses and releases, the working liquid can continuously spray out to the outside from the storage chamber M through the fine hole 43 and the fluid passage 41. That is, based on the above structure, through one or more presses and releases, the effect of continuous spraying can be achieved.

[0154] -Technical effects of the second embodiment-

[0155] In this embodiment, another one-way valve mechanism with a simple structure is adopted, and the same technical effects as those of the first embodiment can also be achieved.

[0156] -The third embodiment-

[0157] Next, with reference to Figure 12 , 13A , 13B and 14, the structure of the pressure storage type spray pump P3 of the third embodiment of the present invention will be described. It should be noted that the difference between this embodiment and the first embodiment and the second embodiment lies in the structure of the third one-way valve mechanism. Except for this, the structure is the same as that of the pressure storage type spray pump P1 of the first embodiment and the pressure storage type spray pump P2 of the second embodiment. Therefore, here, only the structure of the third one-way valve mechanism of this embodiment will be described, and the description of other parts will be omitted.

[0158] Figure 12 The cross-sectional view of the pressure storage type spray pump P3 of the third embodiment of the present invention is shown. As Figure 12As shown, the pressure storage type spray pump P3 of the present embodiment includes a cylinder block 3, a main column 4, and a third check valve mechanism and an upper elastic mechanism that constitute a check valve type pressure storage unit. Different from the first check valve mechanism of the first embodiment and the second check valve mechanism of the second embodiment, the third check valve mechanism includes a second piston 7C, a second spring 8C, and a sub-column 12.

[0159] Regarding the second piston 7C, Figure 13A A perspective view of the second piston 7C is shown, Figure 13B A cross-sectional view of the second piston 7C is shown. As Figure 12 、 13A and 13B show, the second piston 7C is a substantially annular member disposed between the cylinder block 3 and the main column 4. The second piston 7B is provided separately from the main column 4 and has a hollow main body portion 7C1, an upper flange portion 7C2, and a side flange portion 7C3. The upper flange portion 7C2 is formed at the upper end of the main body portion 7C1 and protrudes radially outward. The side flange portion 7C3 is formed at the radial outer edge of the upper flange portion 7C2 and extends axially downward. In addition, as Figure 13A and 13B show, a plurality of grooves 11 extending axially are formed on the inner surface of the main body portion 7C1. The plurality of grooves 11 are for allowing air or working liquid to flow into the storage chamber M through these grooves. In a state where the second piston 7C is disposed between the cylinder block 3 and the main column 4, the lower end portion of the main body portion 7B1 is in seamless contact with the sub-column 12 described later in the axial direction to block the fluid communication between the storage chamber M and the lower chamber LM, and the side flange portion 7C3 is in seamless contact with the inner wall surface of the cylinder block 3 in the radial direction.

[0160] Regarding the second spring 8C, as Figure 12 shows, the second spring 8C is arranged axially, one end is connected to the sub-column 12 described later, and the other end is connected to the end portion of the cylinder block 3.

[0161] Regarding the sub-column 12, Figure 14A A perspective view of the sub-column 12 is shown, Figure 14B A cross-sectional view of the sub-column 12 is shown. As Figure 14A and 14B show, the sub-column 12 has an axially inserted portion 12A and a radially protruding flange portion 12B. The axially inserted portion 12A is the part inserted into the notch formed axially at the end portion of the main column 4 as shown in Figure 12 , and the radially protruding flange portion 12B is the part for making seamless contact with the lower end portion of the main body portion 7C1 of the second piston 7C in the axial direction.

[0162] Then, on the basis of the above structure, referring to Figure 12 、 15With reference to FIGS. 15 and 16, the working principle of the third one-way valve mechanism of the present embodiment will be described. Here, in order to avoid redundant description, only the case of the working liquid will be described.

[0163] Figure 12 FIG. 4 shows a cross-sectional view of the pressure storage type spray pump P3 in the initial state. In the initial state, the first piston 5 contacts the upper flange portion 7C2 of the second piston 7C to close the fine hole 43, so that the storage chamber M and the fluid passage 41 of the main column 4 are in a non-communication state. In addition, the sub-column 12 is fixed to the main column 4 by being inserted into the notch of the main column 4.

[0164] First, by pressing the push-button nozzle 1, the main column 4 connected to the push-button nozzle 1 and the sub-column 12 fixed to the main column 4 are moved axially downward against the second spring 8C. At this time, since the steel ball B closes the connection port between the small-diameter portion 32 and the liquid inlet portion 33, the working liquid in the lower chamber LM cannot be discharged downward.

[0165] At the same time, since the main column 4 and the sub-column 12 move downward relative to the second piston 7C, the lower end portion of the main body portion 7C1 of the second piston 7C, which was originally in close contact with each other, is separated from the radial flange portion 12B of the sub-column 12, so that a gap is generated between the second piston 7C and the sub-column 12. In this way, the working liquid in the lower chamber LM passes through this gap and flows into the storage chamber M along the plurality of grooves 11 formed on the inner surface of the second piston 7B. Then, as the working liquid flows in, the first piston 5 moves axially upward against the first spring 6, and the fine hole 43 originally closed by the side surface of the first piston 5 is opened, so that the storage chamber M and the fluid passage 41 in the main column 4 are in fluid communication, and the working liquid in the storage chamber M flows into the fluid passage through the fine hole 43. However, since the aperture of the through hole 10 is much larger than the aperture of the fine hole 43, the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. From the entire pressing process, the volume of the storage chamber M becomes larger, and the first piston 5 continuously moves axially upward against the first spring 6.

[0166] At the same time, due to the incompressibility of the working liquid, the steel ball B is always in the closed state, and the working liquid in the liquid inlet portion 33 cannot flow into the lower chamber LM.

[0167] When the push - type nozzle 1 is pressed until the upper elastic mechanism is displaced to the maximum compression position (for example, the compression deformation of the first spring 6 reaches the maximum elastic compression position or the lower end of the push - type nozzle 1 abuts against the cover member C), the push - type nozzle 1 is released. At this time, under the action of the second spring 8C, the main column 4 and the sub - column 12 move upward along the axial direction, and the lower end of the main body portion 7C1 of the second piston 7C is again in seamless contact with the radial flange portion 12B of the sub - column 12, and the gap between them disappears, and the working liquid in the lower chamber LM cannot flow into the storage chamber M. That is, the pressure - storage type spray device A changes from Figure 15 the pressed state to Figure 16 the released state. At the same time, under the action of the restoring force of the first spring 6, the first piston 5 moves downward to apply force to the working liquid in the storage chamber M, so that the working liquid flows into the fluid passage 41 through the fine hole 43 faster until the first piston 5 moves to the initial position where it abuts against the stop portion 7B4 of the second piston 7B and closes the fine hole 43. Thus, the pressure - storage type spray pump P3 changes from Figure 16 the released state to Figure 12 the initial state. On the other hand, since the gap between the main column 4 and the second piston 7B disappears, the pressure in the lower chamber LM becomes negative pressure, and the steel ball B is pushed upward, and the working liquid continuously flows into the lower chamber LM from the liquid inlet portion 33. Thus, the lower chamber LM is always filled with the working liquid.

[0168] In addition, as described above, the aperture of the through - hole 10 is much larger than the aperture of the fine hole 43, and the amount of working liquid flowing from the lower chamber LM into the storage chamber M per unit time is greater than the amount of working liquid flowing from the storage chamber M into the fluid passage 41 per unit time. Therefore, through one or more presses and releases, the working liquid can continuously be ejected to the outside from the storage chamber M through the fine hole 43 and the fluid passage 41. That is, based on the above structure, through one or more presses and releases, the effect of continuous spraying can be achieved.

[0169] -Technical effects of the third embodiment-

[0170] In this embodiment, another one - way valve mechanism with a simple structure is adopted, and the same technical effects as those of the first embodiment and the second embodiment can also be achieved.

[0171] -Other embodiments-

[0172] The pressure - storage type spray pump and the pressure - storage type spray device of the first to third embodiments of the present invention have been described above. However, the structure of the present invention is not limited to the above embodiments, and further improvements can also be made on the basis of the above embodiments.

[0173] For example, in the above first embodiment, preferably, a plurality of through holes are formed at equal intervals in the circumferential direction of the second piston. Thereby, air or working liquid in the lower chamber LM can flow into the storage chamber M more uniformly, keeping the force on the second piston and the annular plate portion of the elastic separator uniform and avoiding the skew of the elastic separator.

[0174] For example, in the above second and third embodiments, preferably, a plurality of the grooves are formed at equal intervals in the circumferential direction on the inner surface of the second piston. Thereby, air or working liquid in the lower chamber LM can flow into the storage chamber M more uniformly, keeping the force on the second piston uniform.

[0175] For example, in the above first to third embodiments, preferably, a plurality of fine holes are formed at equal intervals in the entire circumferential direction of the side wall of the main column 4. Thereby, air or working liquid in the storage chamber M can flow into the fluid passage 41 uniformly along the entire circumferential direction of the main column 4, and the spraying effect can be further improved.

[0176] In addition, within its scope, the present invention can freely combine the various embodiments, or appropriately deform or omit the various embodiments.

Claims

1. A pressure storage type spray pump, comprising a main column (4) and a cylinder body (3). A fluid passage (41) extending axially is formed inside the main column (4). The cylinder body (3) houses a working liquid and the main column (4) is inserted therein. Characterized in that, it further comprises a one-way valve mechanism, a storage chamber (M) and an upper elastic mechanism arranged axially between the main column (4) and the cylinder body (3). The storage chamber (M) is formed between the one-way valve mechanism and the upper elastic mechanism. The one-way valve mechanism is configured to open only when the main column (4) is pressed and only allow the working liquid to flow from the cylinder body (3) into the storage chamber (M). The upper elastic mechanism is configured to be displaceable relative to the main column (4) between an initial position and a maximum compression position. When the main column (4) is pressed, it is displaced towards the maximum compression position to fluidly connect the storage chamber (M) and the fluid passage (41), and when the main column (4) is released, it is displaced towards the initial position. The one-way valve mechanism includes: A second piston (7A) which is arranged axially with the upper elastic mechanism across the storage chamber (M) and fixed to the main column (4). The second piston (7A) is formed with a through hole (10) axially penetrating the second piston (7A). A second elastic body (8A) which axially connects the main column (4) and the cylinder body (3), or axially connects the second piston (7A) and the cylinder body (3); and An elastic separator (9) which is configured to cover the through hole (10). By pressing the main column (4), the elastic separator (9) deforms to open the through hole (10).

2. The pressure storage type spray pump according to claim 1, Characterized in that, the second piston (7A) is formed with a plurality of the through holes (10) at equal intervals in the circumferential direction.

3. The pressure storage type spray pump according to claim 1 or 2, Characterized in that, a fine hole (43) communicating with the fluid passage (41) is formed on the side wall of the main column (4). When the upper elastic mechanism is in the initial position, the fine hole (43) is closed by the upper elastic mechanism. By pressing the main column (4), the fine hole (43) is opened to fluidly connect the storage chamber (M) and the fluid passage (41).

4. The pressure storage type spray pump according to claim 3, Characterized in that, a plurality of the fine holes (43) are formed on the side wall of the main column (4) at equal intervals in the circumferential direction.

5. The pressure storage type spray pump according to claim 1 or 2, Characterized in that, a stop portion (7B4) is formed on one surface of the second piston facing the upper elastic mechanism. The stop portion (7B4) is configured to receive the upper elastic mechanism to make the upper elastic mechanism in the initial position.

6. The pressure storage type spray pump according to claim 1 or 2, Characterized in that, the upper elastic mechanism includes: A first piston (5), the first piston (5) being disposed between the main column (4) and the cylinder block (3), the first piston (5) and the second piston facing each other across the storage chamber (M) along the axial direction; and A first elastic body (6), the first elastic body (6) connecting the main column (4) and the first piston (5) along the axial direction.

7. A pressure storage type spray device (A), characterized in that it comprises the pressure storage type spray pump according to any one of claims 1 to 6; and A push-type nozzle (1), the push-type nozzle (1) cooperating with the pressure storage type spray pump to apply a force to the main column (4) of the pressure storage type spray pump along the axial direction.

8. The pressure storage type spray device (A) according to claim 7, characterized in that it further comprises a cover member (C), the cover member (C) being configured to house the cylinder block (3) into which the main column (4) is inserted inside.

9. The pressure storage type spray device (A) according to claim 8, characterized in that the cover member (C) is a screw cap having a thread (C1) formed on the inner wall.

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