Ejection device and ejection device main body

Abstract

To provide an ejection device and an ejection device main body which can prevent by a simple operation, liquid leakage after ejection of liquid.SOLUTION: An ejection device comprises: a liquid storage container capable of storing liquid; and an ejection device main body capable of holding the liquid storage container. The ejection device main body comprises: a nozzle capable of ejecting liquid and air; a liquid channel for introducing the liquid stored in the liquid storage container to the nozzle; an air supply source capable of supplying compressed air: an air channel for introducing the compressed air supplied from the air supply source to the nozzle; and a time difference formation mechanism for providing a difference between introduction timing of the liquid to the nozzle and introduction timing of the compressed air. The time difference formation mechanism is configured to delay timing of introduction stop of the compressed air relative to timing of introduction stop of the liquid.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an ejector and an ejector body. [Background technology]

[0002] Conventionally, there is known a jetting device having a nozzle capable of jetting liquid, the jetting device having a configuration for preventing liquid leakage after the liquid is jetted. For example, Patent Document 1 describes a jetting device that closes the nozzle's jet hole with a needle provided inside the nozzle after the liquid is jetted. Also, Patent Document 2 describes a jetting device that opens a drain valve after the liquid is jetted to discharge the liquid in the flow path. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-57839 A [Patent Document 2] JP 2017-039079 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the ejection device described in Patent Document 1 has a problem in that the needle opens gradually due to the pressure inside the ejection device, making it impossible to prevent leakage of liquid after ejection. On the other hand, the ejection device described in Patent Document 2 has a problem in that the operation required to prevent leakage of liquid after ejection is complicated, although it can prevent leakage of liquid after ejection by opening the drain valve after ejection to drain the liquid in the flow path.

[0005] The present invention relates to a jetting device and a jetting device main body that are capable of preventing liquid leakage after liquid is jetted with a simple operation. [Means for solving the problem]

[0006] The ejection device of the present invention comprises a liquid storage container capable of storing liquid, and an ejection device main body capable of holding the liquid storage container, and the ejection device main body has a nozzle capable of ejecting liquid and air, a liquid flow path that introduces the liquid stored in the liquid storage container into the nozzle, an air supply source capable of supplying compressed air, an air flow path that introduces the compressed air supplied from the air supply source into the nozzle, and a time difference creating mechanism that creates a difference between the timing of introducing liquid into the nozzle and the timing of introducing compressed air, and the time difference creating mechanism is configured to delay the timing of stopping the introduction of compressed air relative to the timing of stopping the introduction of liquid.

[0007] In addition, the ejection device main body of the present invention is an ejection device main body capable of holding a liquid storage container capable of storing liquid, and has a nozzle capable of ejecting liquid and air, a liquid flow path that introduces the liquid contained in the liquid storage container into the nozzle, an air supply source capable of supplying compressed air, an air flow path that introduces the compressed air supplied from the air supply source into the nozzle, and a time difference creating mechanism that creates a difference between the timing of introducing liquid into the nozzle and the timing of introducing compressed air, and the time difference creating mechanism is configured to delay the timing of stopping the introduction of compressed air relative to the timing of stopping the introduction of liquid. Effect of the Invention

[0008] According to the ejection device and the ejection device main body of the present invention, it is possible to prevent liquid leakage after ejection of liquid with a simple operation. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a jetting device according to a first embodiment. [Diagram 2] FIG. 1 is a cross-sectional view showing a jetting device according to a first embodiment. [Diagram 3] FIG. 2 is a diagram showing an operation unit according to the first embodiment. [Figure 4] FIG. 2 is a diagram showing an operation unit according to the first embodiment. [Diagram 5] FIG. 2 is a cross-sectional view showing an operation unit according to the first embodiment. [Figure 6] FIG. 6 is a schematic diagram showing a jetting device according to a second embodiment. [Figure 7] FIG. 6 is a schematic diagram showing a jetting device according to a second embodiment. [Figure 8] FIG. 6 is a schematic diagram showing a nozzle according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention. In addition, in the present embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0011] [Configuration of the ejection device according to the first embodiment] First, the configuration of a spraying device 1 according to the first embodiment will be described with reference to Figs. 1 to 5. The spraying device 1 according to the first embodiment is a spraying device used for spraying liquid such as a cleaning agent and a deodorant (hereinafter simply referred to as "liquid") in an atomized or foamed state. Specifically, as shown in Figs. 1 and 2, the spraying device 1 according to the first embodiment includes a liquid storage container 10 capable of storing liquid, and a spraying device main body 20 capable of holding the liquid storage container 10.

[0012] In this specification, the upper side of the ejection device in the state shown in Figures 1 and 2 will be described as "upper", and the lower side of the ejection device in the state shown in Figures 1 and 2 will be described as "lower". Also, in this specification, the state of the ejection device in Figures 1 and 2 will be referred to as the "upright state", and the opposite state (upside down state) will be referred to as the "inverted state". Furthermore, in this specification, the direction in which liquid is ejected will be described as the "forward", and the opposite direction will be described as the "rearward".

[0013] [Configuration of liquid storage container according to the first embodiment] 1 and 2, the liquid storage container 10 includes a bottom 11, a cylindrical body 12 extending upward from the periphery of the bottom 11, and a cylindrical mouth 13 provided at the upper end of the body 12, and is formed as a bottomed cylinder overall with only the upper end of the mouth 13 being open. Moreover, the liquid storage container 10 according to the first embodiment is configured to be capable of storing liquid in an internal space defined by the bottom 11 and the body 12.

[0014] The bottom 11 has a circular shape. The center of the bottom 11 is formed to bulge upward. With this configuration, the liquid contained in the liquid storage container 10 is accumulated on the periphery of the bottom 11, which has the advantage that, for example, when the remaining amount of liquid is small, the liquid can easily flow into the dip tube 50 described later.

[0015] The body portion 12 is formed in a cylindrical shape. The upper end portion of the body portion 12 is formed to be inclined upward and toward the center in the radial direction, and has a shape in which the diameter decreases toward the top as a whole.

[0016] The mouth portion 13 is formed in a cylindrical shape having an outer diameter smaller than that of the bottom portion 11. In addition, a screw thread is formed on the outer peripheral surface of the mouth portion 13 in a spiral shape along the circumferential direction, and is configured to be screwable with a container holding portion 40 of the ejection device main body 20, which will be described later.

[0017] The liquid storage container 10 is formed by integral molding using materials such as PP (polypropylene), PE (polyethylene), PET (polyethylene terephthalate), etc. Note that the molding materials and molding methods of the liquid storage container 10 are not limited to these, and various known molding materials and molding methods may be adopted.

[0018] The liquid storage container 10 having the above configuration is configured to be attachable to the jetting device main body 20. Specifically, the liquid storage container 10 is configured to be attached to the jetting device main body 20 by screwing the mouth portion 13 and a container holding portion 40 described below. This configuration has the advantage that it is easy to refill or refill with liquid. The liquid storage container 10 may be configured to be attached to the jetting device main body 20 in an undetachable manner, or may be formed integrally with the jetting device main body 20.

[0019] The liquid contained in the liquid storage container 10 is not particularly limited, but when it is a medium-viscosity liquid, the effect of the jetting device 1 according to the first embodiment (the effect of preventing liquid leakage after liquid ejection with a simple operation) can be more fully enjoyed. Furthermore, when the use of the jetting device 1 according to the first embodiment is to eject liquid in an atomized state, it is preferable that the liquid contained in the liquid storage container 10 is a low-viscosity liquid. Furthermore, when the use of the jetting device 1 according to the first embodiment is to eject liquid in a foamed state, it is preferable that the liquid contained in the liquid storage container 10 is a foamable liquid.

[0020] In this specification, a viscosity of less than 10 mPa·s is defined as "low viscosity," a viscosity of 10 mPa·s or more and less than 300 mPa·s as "medium viscosity," and a viscosity of 300 mPa·s or more as "high viscosity."

[0021] [Configuration of the jetting device main body according to the first embodiment] As shown in Figures 1 and 2, the ejection device main body 20 includes a housing 30, a container holding portion 40 capable of holding a liquid storage container 10, a dip tube 50 that causes the liquid contained in the liquid storage container 10 to flow toward a nozzle 80 described later, and a tube holding portion 60 capable of holding the dip tube 50.

[0022] The housing 30 includes a long lower surface portion 31 extending along the front-rear direction, a long upper surface portion 32 extending along the front-rear direction, a front surface portion 33 extending from the front end of the lower surface portion 31 toward the front end of the upper surface portion 32, a rear surface portion 34 extending from the rear end of the lower surface portion 31 toward the rear end of the upper surface portion 32, and a pair of side surfaces 35 extending from both side ends of the lower surface portion 31 to both side ends of the upper surface portion 32. The housing 30 is formed such that the length from one side surface portion 35 to the other side surface portion 35 is shorter than the radial length of the body portion 12. That is, the housing 30 is formed to be thin with a small thickness in the left-right direction.

[0023] The upper surface portion 32 is provided eccentrically forward with respect to the lower surface portion 31. The front surface portion 33 and the rear surface portion 34 have a vertical length that does not reach the upper surface portion 32, and are formed with a portion inclined from the lower surface portion 31 toward the upper surface portion 32. The front surface portion 33 has a lower front surface portion 33a extending upward from the front end of the lower surface portion 31, an intermediate front surface portion 33b extending forward from the tip of the lower front surface portion 33a, and an upper front surface portion 33c extending from the tip of the intermediate front surface portion 33b toward the front end of the upper surface portion 32.

[0024] The lower front surface portion 33a has a shape that follows the outer shape of one radial end side of the body portion 12 and the mouth portion 13 in a cross section along the vertical direction of the jetting device 1 (see FIG. 2). The middle front surface portion 33b is formed to be thicker than the lower front surface portion 33a and the upper front surface portion 33c. The upper front surface portion 33c is formed to have a curved surface that curves forward.

[0025] The housing 30 also has a nozzle opening 36 that exposes a nozzle 80, which will be described later, and a grip portion 37 that can be gripped by a user. The nozzle opening 36 is an opening defined by the front end of the top surface portion 32, the upper end of the front surface portion 33, and the front end of the side surface portion 35. The grip portion 37 is formed to extend at an angle rearward and downward from a region defined by the rear end of the top surface portion 32, the upper end of the rear surface portion 34, and the rear end of the side surface portion 35, and has a shape and size that allows the user to grip it with one hand.

[0026] That is, grip portion 37 is provided on the opposite side (rear side) from the side from which liquid is ejected (front side) with nozzle 80 described later as the boundary. Specifically, grip portion 37 is provided at the end (rear end) of housing 30 opposite the side from which liquid is ejected. This configuration has the advantage of being able to prevent liquid from sticking to the user's hands when liquid is ejected.

[0027] The housing 30 is formed by integral molding using materials such as ABS (acrylonitrile-butadiene-styrene copolymer), PP (polypropylene), POM (polyacetal), etc. Note that the molding materials and molding methods of the housing 30 are not limited to these, and various known molding materials and molding methods may be used.

[0028] The container holding part 40 is provided below the intermediate front surface part 33b. The container holding part 40 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the mouth part 13 of the liquid storage container 10. A screw groove is formed in the inner peripheral surface of the container holding part 40 in a spiral shape along the circumferential direction, and is configured to be screwable with the mouth part 13. In other words, the ejection device main body 20 is configured to hold the liquid storage container 10 by screwing the container holding part 40 and the mouth part 13 together.

[0029] The dip tube 50 is formed in a tubular shape with open upper and lower ends, and its upper end is inserted into a liquid flow portion 70 (described later) of the tube holding part 60. The dip tube 50 has a length such that its lower end reaches near the bottom 11 of the liquid storage container 10.

[0030] The tube holding part 60 is provided so as to be located below the intermediate front surface part 33b and inside the mouth part 13 of the liquid storage container 10 when the jetting device main body 20 holds the liquid storage container 10. The tube holding part 60 is formed in a cylindrical shape having a diameter smaller than the inner diameter of the mouth part 13, and is configured to hold the dip tube 50 by inserting the dip tube 50 into a liquid flow part 70 described later.

[0031] 2, the intermediate front surface portion 33b and the tube holding portion 60 of the housing 30 have a liquid flow section 70 that causes the liquid flowing in from the dip tube 50 to flow toward a nozzle 80 (described later) and an air flow section 71 that causes air to flow between the outside and the inside of the liquid storage container 10. Both the liquid flow section 70 and the air flow section 71 are through holes formed penetrating from the upper end of the intermediate front surface portion 33b to the lower end of the tube holding portion 60. The liquid flow section 70 and the air flow section 71 are provided in parallel in the front-rear direction of the intermediate front surface portion 33b and the tube holding portion 60. Specifically, the liquid flow section 70 is provided on the front side, and the air flow section 71 is provided on the rear side.

[0032] [Internal structure of the housing according to the first embodiment] As shown in Figures 1 to 5, the ejection device main body 20 is provided inside the housing 30 with a nozzle 80 capable of ejecting liquid and air, a liquid tube 90 that introduces liquid flowing in from the liquid flow section 70 into the nozzle 80, an air supply source 100 capable of supplying compressed air, an operating section 110 that operates the air supply source 100, an air tube 120 that introduces the compressed air supplied from the air supply source 100 into the nozzle 80, and a power supply section 130 that supplies power to the air supply source 100.

[0033] In this specification, when the term "air" is used simply, it means "compressed air." That is, in this specification, "compressed air" may be simply referred to as "air" or may be referred to as "compressed air."

[0034] The nozzle 80 is formed in an elongated shape extending along the front-rear direction, and is provided near the top surface 32 and near the front surface 33 of the housing 30. The nozzle 80 also has a mixing chamber 81 for mixing the liquid and air, and an ejection hole 82 for ejecting the liquid and air mixed in the mixing chamber 81. As described above, the nozzle 80 has the mixing chamber 81, which has the advantage that the liquid and air flowing into the nozzle 80 can be mixed, and the liquid can be ejected in an atomized or foamed state.

[0035] The liquid tube 90 is formed in a tubular shape with an open upper end and lower end. The upper end of the liquid tube 90 is attached to the lower end of the nozzle 80, and the lower end is inserted into the liquid flow portion 70 of the intermediate front surface portion 33b.

[0036] The air supply source 100 is provided near the lower surface 31 and near the rear surface 34 of the housing 30. In the first embodiment, the air supply source 100 is an air pump capable of supplying compressed air. The air supply source 100 is not limited to an air pump, and may be, for example, a cylinder that contains compressed air in advance, or other various known components may be used. The air supply source 100 has a first supply source (not shown) that causes compressed air to flow into a first air tube 121 (to be described later) of the air tube 120, and a second supply source (not shown) that causes compressed air to flow into a second air tube 122 (to be described later) of the air tube 120.

[0037] The flow rate of the compressed air supplied from the air supply source 100 is preferably 0.5 L / min or more, more preferably 1.0 L / min or more, and even more preferably 1.5 L / min or more, from the viewpoint of spraying the liquid in an atomized state. Moreover, the flow rate of the compressed air supplied from the air supply source 100 is preferably 20 L / min or less, from the viewpoint of making the amount of liquid sprayed suitable for the user and improving the convenience of using the spray device 1.

[0038] The pressure of the compressed air supplied from the air supply source 100 is preferably 15 kPa or more, more preferably 40 kPa or more, and even more preferably 60 kPa or more, from the viewpoint of spraying the liquid in an atomized state. Moreover, the pressure of the compressed air supplied from the air supply source 100 is preferably 400 kPa or less, from the viewpoint of making the amount of liquid sprayed suitable for the user and improving the convenience of using the spray device 1.

[0039] The operation unit 110 is provided on the opposite side (rear side) of the nozzle 80 from the side (front side) where the liquid is ejected. Specifically, the operation unit 110 is provided between the nozzle 80 and the grip part 37 in the direction along the liquid ejection direction. This configuration has the advantage of preventing the liquid from adhering to the user's hands when the liquid is ejected. In addition, since the operation unit 110 is located in front of the grip part 37, there is the advantage that the operation unit 110 can be easily operated while the grip part 37 is being gripped.

[0040] Moreover, the operating unit 110 is provided so as to intersect with the extending direction of the gripping portion 37 of the housing 30, and at least a part of the operating unit 110 is provided so as to be exposed from the housing 30. Specifically, the operating unit 110 is provided so as to intersect with the extending direction of the gripping portion 37 in a cross-sectional view along the up-down direction of the ejection device main body 20 (see FIG. 2), and a pressing surface portion 116a and a part of the peripheral surface portion 116b, which will be described later, are provided so as to be exposed from a hole formed in the rear end portion of the upper surface portion 32 of the housing 30. With this configuration, when the user is holding the gripping portion 37, the operating unit 110 is located within the movable range of the user's fingers, which has the advantage that the operating unit 110 can be easily operated.

[0041] The operating portion 110 has a stationary portion 110A attached to the upper end of the middle front portion 33b of the housing 30, and a movable portion 110B configured to be movable toward or away from the stationary portion 110A.

[0042] 2 and 5, the stationary part 110A is formed in a cylindrical shape with an open upper end and lower end, and is provided at the upper end and rear end of the intermediate front part 33b. The internal space of the stationary part 110A has a first hole part 111 formed from the upper end of the stationary part 110A to the vicinity of the center, a second hole part 112 formed from the first hole part 111 to the lower end of the stationary part 110A, a communication hole 113 that communicates the internal space of the liquid storage container 10 with the atmosphere, and an air introduction hole 114 that introduces air introduced from a second air tube 122 of the air tube 120 (described later) into the inside of the stationary part 110A.

[0043] The first hole 111 has a diameter that is approximately equal to the outer diameter of a rod portion 117 (described later) of the movable portion 110B. That is, the inner surface of the stationary portion 110A that forms the first hole 111 and the outer surface of the rod portion 117 are in close contact with each other.

[0044] The second hole portion 112 has a diameter larger than the diameter of the first hole portion 111. The second hole portion 112 also has a diameter larger than the outer diameter of a piston portion 118 (described later) of the movable portion 110B, and is configured to form a gap between the inner surface of the stationary portion 110A that forms the second hole portion 112 and the rod portion 117 and the piston portion 118. The second hole portion 112 is configured to communicate with the first hole portion 111 and the air flow portion 71 of the intermediate front surface portion 33b.

[0045] The communication hole 113 is formed radially outward of the first hole 111 relative to the periphery of the first hole 111. Specifically, the communication hole 113 is formed in a spiral shape along the inner circumferential surface of the stationary part 110A forming the first hole 111, and is formed recessed from the inner circumferential surface of the stationary part 110A forming the first hole 111 toward the radially outward side of the first hole 111. Therefore, even when the inner surface of the stationary part 110A forming the first hole 111 and the outer surface of a rod part 117 (described later) of the movable part 110B are in close contact with each other, air flows between the inside and the outside of the stationary part 110A.

[0046] The communication hole 113 having the above configuration communicates with the internal space of the liquid storage container 10 via the second hole portion 112 and the air flow portion 71, and communicates with the atmosphere via the housing 30. In other words, the communication hole 113 is configured to communicate the internal space of the liquid storage container 10 with the atmosphere.

[0047] The air introduction hole 114 is formed to extend in a direction perpendicular to the axial direction of the first hole portion 111. Specifically, the air introduction hole 114 is formed to extend toward the front side in a direction perpendicular to the axial direction of the first hole portion 111 in a cross-sectional view along the up-down direction of the jetting device main body 20 (see FIGS. 2 and 5). The air introduction hole 114 is configured to communicate with the outside of the stationary portion 110A and the first hole portion 111.

[0048] 3 to 5, stationary part 110A has switch 115 that activates air supply source 100 when pressed by movable part 110B. In the first embodiment, switch 115 is a pin that activates air supply source 100 when pressed by movable part 110B. Note that switch 115 is not limited to a pin, and various known switches may be used.

[0049] Moreover, the switch 115 has a first switch 115a for activating the first supply source of the air supply source 100, and a second switch 115b for activating the second supply source of the air supply source 100. The first switch 115a and the second switch 115b are provided on the outer surface of the stationary part 110A. In the first embodiment, the first switch 115a is provided on the right side of the stationary part 110A, and the second switch 115b is provided on the rear side of the stationary part 110A. The first switch 115a and the second switch 115b may be provided at the same position in the circumferential direction of the stationary part 110A.

[0050] The first switch 115a and the second switch 115b are provided at different positions in the direction along the advancing and retracting direction of the movable part 110B. Specifically, the first switch 115a is provided closer to the movable part 110B than the second switch 115b in the direction along the advancing and retracting direction of the movable part 110B. In other words, the second switch 115b is provided closer to the liquid storage container 10 than the first switch 115a in the direction along the advancing and retracting direction of the movable part 110B. In the first embodiment, the first switch 115a is provided in the center of the stationary part 110A, and the second switch 115b is provided on the lower end side of the stationary part 110A.

[0051] As shown in Figures 1 to 5, movable part 110B has a pressing part 116 that is pressed by a user, a rod part 117 attached to the lower end of pressing part 116, a piston part 118 provided at the lower end of rod part 117, and a sealing part 119 attached to the outer peripheral surface of rod part 117.

[0052] The pressing portion 116 has a pressing surface portion 116a that is pressed by the user, a peripheral surface portion 116b that extends downward from the periphery of the pressing surface portion 116a, an extending surface portion 116c that extends downward from the lower end of the peripheral surface portion 116b, a protruding portion 116d that protrudes downward from the lower surface of the pressing surface portion 116a, and a closing portion 116e provided at the lower end of the protruding portion 116d, and overall the pressing portion 116 is formed in the shape of a closed-topped cylinder with an open lower end.

[0053] The pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are configured to be capable of approaching or moving away from the immovable portion 110A. Specifically, the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are configured to approach the upper end of the immovable portion 110A when the pressing surface portion 116a is pressed by the user, and to move away from the upper end of the immovable portion 110A when the user's pressure on the pressing surface portion 116a is released.

[0054] The extending surface portion 116c is formed by extending downward from a rear half of the lower end of the circumferential surface portion 116b. The extending surface portion 116c has a length such that its lower end comes into contact with the first switch 115a of the stationary portion 110A when the pressing surface portion 116a is not pressed by the user. In other words, the extending surface portion 116c covers a part of the outer surface of the stationary portion 110A when the pressing surface portion 116a is not pressed by the user.

[0055] The extending surface portion 116c is configured to be slidable against the outer surface of the stationary portion 110A. In addition, the extending surface portion 116c is configured to press the first switch 115a and the second switch 115b of the stationary portion 110A when the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e approach the stationary portion 110A.

[0056] The protruding portion 116d is formed in a cylindrical shape with an open center at the lower end, and is formed to extend downward from the center of the pressing surface portion 116a. The blocking portion 116e is formed in an annular shape with an inner diameter larger than the diameter of the rod portion 117. The blocking portion 116e is configured to be able to approach or move away from the communication hole 113 of the stationary portion 110A, and is configured to be able to open and close the communication hole 113. Specifically, the blocking portion 116e is configured to block the communication hole 113 when it reaches the communication hole 113, and to open the communication hole 113 when it moves away from the communication hole 113.

[0057] The rod portion 117 is formed in a long cylindrical shape extending along the axial direction. The rod portion 117 is attached to the lower end of the pressing portion 116 by inserting the upper end of the rod portion 117 into the internal space of the protruding portion 116d. The rod portion 117 is configured to be movable forward and backward through the first hole portion 111 and the second hole portion 112 of the immovable portion 110A. Specifically, the rod portion 117 is configured to advance forward through the first hole portion 111 and the second hole portion 112 when the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are close to the immovable portion 110A, and to retreat through the first hole portion 111 and the second hole portion 112 when the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are separated from the immovable portion 110A.

[0058] The piston portion 118 is formed in a cylindrical shape having an outer diameter larger than the diameter of the rod portion 117. The sealing portion 119 is formed in an annular shape having an inner diameter larger than the diameter of the rod portion 117. The piston portion 118 and the sealing portion 119 are configured to be able to move forward and backward through the second hole portion 112 of the stationary portion 110A. Specifically, the piston portion 118 and the sealing portion 119 are configured to advance through the second hole portion 112 when the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are approaching the stationary portion 110A, and to retreat through the second hole portion 112 when the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e are separated from the stationary portion 110A.

[0059] Moreover, the sealing portion 119 is configured to be able to open and close the first hole portion 111 and the communication hole 113 of the immovable portion 110A. Specifically, the sealing portion 119 is configured to open the first hole portion 111 and the communication hole 113 when advancing through the second hole portion 112, and to close the first hole portion 111 and the communication hole 113 when retracting through the second hole portion 112 and reaching the first hole portion 111 and the communication hole 113. This configuration has the advantage that liquid leakage from the first hole portion 111 and the communication hole 113 can be prevented, for example, even when the jetting device 1 is in an upside-down state or when the jetting device 1 is tilted or fallen.

[0060] The movable part 110B having the above-mentioned configuration is configured to activate the air supply source 100 by pressing the switch 115 while approaching the communication hole 113, and is also configured to block the communication hole 113 when it reaches the communication hole 113, thereby increasing the internal pressure of the liquid storage container 10 by compressed air supplied from the second air flow path 22B described later.

[0061] Specifically, the movable portion 110B is configured such that when the blocking portion 116e of the pressing portion 116 approaches the communication hole 113, the extension surface portion 116c of the pressing portion 116 presses the first switch 115a and the second switch 115b of the switch 115, thereby activating the first supply source and the second supply source of the air supply source 100, respectively, and is configured such that when the blocking portion 116e reaches the communication hole 113, the blocking portion 116e blocks the communication hole 113, thereby increasing the internal pressure of the liquid storage container 10 by compressed air supplied from the second air flow path 22B described later.

[0062] The air tube 120 has a first air tube 121 that introduces compressed air supplied from a first supply source of the air supply source 100 to the nozzle 80, and a second air tube 122 that introduces compressed air supplied from a second supply source of the air supply source 100 to the stationary part 110A. The first air tube 121 and the second air tube 122 are separate from each other.

[0063] The first air tube 121 is formed in a tubular shape with an open upper end and lower end. The upper end of the first air tube 121 is attached to the rear end of the nozzle 80, and the lower end is attached to the first supply source of the air supply source 100. The second air tube 122 is formed in a tubular shape with an open upper end and lower end. The upper end of the second air tube 122 is inserted into the air introduction hole 114 of the stationary part 110A, and the lower end is attached to the second supply source of the air supply source 100.

[0064] The power supply unit 130 is provided near the bottom surface 31 and near the front surface 33 of the housing 30. That is, the air supply source 100 and the power supply unit 130 are provided in parallel in the front-to-rear direction of the housing 30. With this configuration, the air supply source 100 and the power supply unit 130 are not arranged in the up-down direction, which has the advantage that the jetting device main body 20 can be made compact.

[0065] In the first embodiment, power supply unit 130 is a primary battery configured to be detachable from housing 30. Power supply unit 130 may be a secondary battery. Power supply unit 130 is electrically connected to air supply source 100 and switch 115 of operation unit 110, and is configured to supply power to air supply source 100 when switch 115 is pressed by movable portion 110B.

[0066] Moreover, the jetting device main body 20 according to the first embodiment has a damper 140 that reduces the speed at which the movable part 110B moves away from the communication hole 113. The damper 140 is provided on the outer surface of the immovable part 110A, and is configured to reduce the speed at which the blocking part 116e of the movable part 110B moves away from the communication hole 113. Specifically, the damper 140 is provided on the left side of the immovable part 110A.

[0067] The ejection device 1 having the above-mentioned configuration has a liquid flow path 21 that introduces the liquid contained in the liquid storage container 10 into the nozzle 80, an air flow path 22 that introduces compressed air supplied from the air supply source 100 into the nozzle 80, and a time difference creating mechanism 23 that creates a difference between the timing of introducing the liquid and the timing of introducing the compressed air into the nozzle 80.

[0068] The liquid flow path 21 is composed of the internal space of the dip tube 50, the liquid flow section 70, and the internal space of the liquid tube 90. The liquid flow path 21 is also configured to introduce liquid into the nozzle 80 as the internal pressure of the liquid storage container 10 increases.

[0069] The air flow path 22 has a first air flow path 22A that introduces compressed air supplied from the air supply source 100 into the nozzle 80, and a second air flow path 22B that introduces compressed air supplied from the air supply source 100 into the liquid storage container 10. In the first embodiment, the first air flow path 22A and the second air flow path 22B are separate from each other.

[0070] The first air flow path 22A is formed by the internal space of the first air tube 121. That is, the first air flow path 22A is configured to introduce compressed air supplied from the first supply source of the air supply source 100 into the nozzle 80. The second air flow path 22B is formed by the internal space of the second air tube 122, the air introduction hole 114, the communication hole 113, the second hole portion 112, and the air flow portion 71. That is, the second air flow path 22B is configured to introduce compressed air supplied from the second supply source of the air supply source 100 into the liquid storage container 10.

[0071] The time difference creating mechanism 23 includes at least the movable part 110 B. In the first embodiment, the time difference creating mechanism 23 is composed of the movable part 110 B, a switch 115, and a damper 140.

[0072] The time difference creating mechanism 23 is configured to make the timing of starting the introduction of compressed air earlier than the timing of starting the introduction of liquid. In the first embodiment, the first switch 115a is provided closer to the movable part 110B than the second switch 115b in the direction along the moving direction of the movable part 110B. Therefore, while approaching the communication hole 113, the movable part 110B first presses the first switch 115a to activate the first supply source of the air supply source 100, then presses the second switch 115b to activate the second supply source of the air supply source 100, and finally closes the communication hole 113. That is, the liquid is introduced after the compressed air is introduced into the nozzle 80. The time difference creating mechanism 23 according to the first embodiment is configured to make the timing of starting the introduction of compressed air earlier than the timing of starting the introduction of liquid by such a mechanism.

[0073] The time difference creating mechanism 23 is configured to delay the timing of stopping the introduction of compressed air from the timing of stopping the introduction of liquid. In the first embodiment, the second switch 115b is provided closer to the liquid storage container 10 than the first switch 115a in the direction along the advancing and retreating direction of the movable part 110B. Therefore, when the movable part 110B is separated from the communication hole 113, first the communication hole 113 is opened, then the pressure of the movable part 110B against the second switch 115b is released, and finally the pressure of the movable part 110B against the first switch 115a is released. That is, after the introduction of liquid to the nozzle 80 is stopped, the introduction of compressed air is stopped. The time difference creating mechanism 23 according to the first embodiment is configured to delay the timing of stopping the introduction of compressed air from the timing of stopping the introduction of liquid by such a mechanism.

[0074] The time difference creating mechanism 23 is configured to be able to adjust the interval between the stop of introduction of the liquid and the stop of introduction of the compressed air by the damper 140. The interval between the stop of introduction of the liquid and the stop of introduction of the compressed air is preferably 0.1 seconds or more from the viewpoint of discharging the liquid remaining inside the nozzle 80 after the liquid is ejected. The interval between the stop of introduction of the liquid and the stop of introduction of the compressed air is preferably 3 seconds or less, more preferably 2 seconds or less, and even more preferably 1 second or less from the viewpoint of not giving the user a sense of anxiety that the ejection device 1 is broken due to the compressed air continuing to be ejected for a long time. The time difference creating mechanism 23 may adjust the interval between the stop of introduction of the liquid and the stop of introduction of the compressed air by the arrangement positions of the first switch 115a and the second switch 115b, without using the damper 140.

[0075] [Method of using the ejection device according to the first embodiment] The jetting device 1 according to the first embodiment is used in an upright state. When using the jetting device 1, the user holds the gripping portion 37, points the jetting hole 82 toward a predetermined jetting location, and presses the pressing surface portion 116a of the movable portion 110B. When the pressing surface portion 116a is pressed, the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e of the movable portion 110B approach the stationary portion 110A.

[0076] When the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e approach the stationary portion 110A, first, the extending surface portion 116c of the movable portion 110B presses the first switch 115a of the stationary portion 110A. When the first switch 115a is pressed, the first supply source of the air supply source 100 is operated, and compressed air is introduced into the nozzle 80 through the first air flow path 22A. Next, the extending surface portion 116c of the movable portion 110B presses the second switch 115b of the stationary portion 110A. When the second switch 115b is pressed, the second supply source of the air supply source 100 is operated, and compressed air is introduced into the liquid storage container 10 through the second air flow path 22B. Finally, the blocking portion 116e of the movable portion 110B blocks the communication hole 113 of the stationary portion 110A. When the communication hole 113 is blocked, the internal pressure of the liquid storage container 10 increases due to the compressed air supplied from the second air flow path 22B, and the liquid flow path 21 introduces the liquid to the nozzle 80. The liquid introduced to the nozzle 80 is mixed with the compressed air in the mixing chamber 81 of the nozzle 80, and is ejected in an atomized or foamed state from the ejection hole 82 of the nozzle 80. In this way, the ejection device 1 according to the first embodiment has the advantage that the number of parts required to eject the liquid can be reduced, since the liquid can be ejected simply by pressing the pressing surface portion 116a.

[0077] When the user stops using the jetting device 1, the user removes his / her hand from the pressing surface 116a to release the pressure on the pressing surface 116a. When the pressure on the pressing surface 116a is released, the pressing surface 116a, the circumferential surface 116b, the protruding portion 116d, and the blocking portion 116e of the movable portion 110B move away from the stationary portion 110A. At this time, the damper 140 of the stationary portion 110A slows down the speed at which the pressing surface 116a, the circumferential surface 116b, the protruding portion 116d, and the blocking portion 116e move away from the stationary portion 110A.

[0078] When the pressing surface portion 116a, the circumferential surface portion 116b, the protruding portion 116d, and the blocking portion 116e move away from the stationary portion 110A, first, the blocking portion 116e opens the communication hole 113. When the communication hole 113 is opened, the compressed air present inside the liquid storage container 10 is discharged to the atmosphere through the communication hole 113 and the housing 30. Therefore, the internal pressure of the liquid storage container 10 drops, and the introduction of the liquid into the nozzle 80 through the liquid flow path 21 is stopped. Next, the extension surface portion 116c moves away from the second switch 115b, and the pressure on the second switch 115b is released. When the pressure on the second switch 115b is released, the second supply source of the air supply source 100 is stopped, and the introduction of the compressed air into the liquid storage container 10 through the second air flow path 22B is stopped. At this time, compressed air continues to be introduced into the nozzle 80 through the first air flow path 22A, so that compressed air continues to be ejected from the nozzle 80. Therefore, liquid remaining inside the nozzle 80 can be discharged. Finally, the extension surface portion 116c moves away from the first switch 115a, and the pressure on the first switch 115a is released. When the pressure on the first switch 115a is released, the first supply source of the air supply source 100 is stopped, and the introduction of compressed air into the nozzle 80 via the first air flow path 22A is stopped.

[0079] [Configuration of the jetting device according to the second embodiment] Next, the configuration of the jetting device 1' according to the second embodiment will be described with reference to Figures 6 to 8. In the following, only the configuration of the jetting device 1' according to the second embodiment that is different from the jetting device 1 according to the first embodiment will be described, and the description of the other configurations will be omitted. In addition, in the description of the jetting device 1' according to the second embodiment, the same reference numerals will be used for the same configurations as the jetting device 1 according to the first embodiment.

[0080] [Air flow section configuration] 6 and 7, an air flow section 71' according to the second embodiment has a first air flow section 71a formed penetrating from the upper end of the intermediate front surface portion 33b to the lower end of the tube holding portion 60, and a second air flow section 71b formed penetrating from the rear end of the intermediate front surface portion 33b to the first air flow section 71a. In the second embodiment, the first air flow section 71a functions as a communication hole 113' that communicates between the internal space of the liquid storage container 10 and the atmosphere.

[0081] [Nozzle configuration] As shown in FIG. 8, the nozzle 80' according to the second embodiment has an ejection hole 82' for ejecting liquid and air, and a nozzle flow path 83 for causing the liquid and air introduced into the nozzle 80' to flow toward the ejection hole 82'. The ejection hole 82' has a first ejection hole 82a for ejecting liquid and a second ejection hole 82b for ejecting air. The second ejection hole 82b is formed with a smaller diameter than the first ejection hole 82a and is provided in the center of the first ejection hole 82a. The nozzle flow path 83 has a first nozzle flow path 83a for causing the liquid introduced into the nozzle 80' to flow toward the first ejection hole 82a, and a second nozzle flow path 83b for causing the air introduced into the nozzle 80' to flow toward the second ejection hole 82b. The second nozzle flow path 83b is formed with a smaller diameter than the first nozzle flow path 83a and is provided in the center of the first nozzle flow path 83a. With this configuration, the liquid sprayed out from the first nozzle hole 82a is scattered by the air sprayed out from the second nozzle hole 82b, which has the advantage that the liquid can be sprayed in an atomized state regardless of the viscosity of the liquid.

[0082] [Air supply source and power supply configuration] 6 and 7, the air supply source 100' according to the second embodiment differs from the air supply source 100 according to the first embodiment in that it does not have a first supply source and a second supply source, but is a single air pump capable of supplying compressed air. In the second embodiment, the air supply source 100' and the power supply unit 130' are disposed along the up-down direction of the housing 30'.

[0083] [Operation section configuration] As shown in Figures 6 and 7, the operating unit 110' has a movable part 110B' that is configured to be able to move toward or away from the communication hole 113', and a switch 115' that activates the air supply source 100' when pressed by the movable part 110B'.

[0084] Movable portion 110B' has a pressing portion 116' that is pressed by a user, a rod portion 117' provided at the lower end of pressing portion 116', and a closing portion 116e' provided at the lower end of rod portion 117'.

[0085] The pressing portion 116' is formed in a cylindrical shape with a radial length longer than the axial length. The rod portion 117' is formed in a long cylindrical shape with a diameter smaller than that of the pressing portion 116'. The rod portion 117' is configured to press a switch 115' (described later) when the movable portion 110B' approaches the communication hole 113'. The blocking portion 116e' is formed in a long cylindrical shape with a diameter smaller than that of the rod portion 117'. The blocking portion 116e' is configured to block the communication hole 113' when the movable portion 110B' reaches the communication hole 113'.

[0086] The switch 115' according to the second embodiment differs from the switch 115 according to the first embodiment in that it does not have the first switch 115a and the second switch 115b, but is a single pin that activates the air supply source 100' when pressed by the movable part 110B'. In the second embodiment, the switch 115' is configured so that its tip (the tip of the pin) is located at the lower end of the rod part 117' of the movable part 110B'. Specifically, the switch 115' is configured so that its tip contacts the lower end of the rod part 117' of the movable part 110B'.

[0087] [Air tube configuration] As shown in FIG. 6 and FIG. 7, the air tube 120' has a first air tube 121' that introduces compressed air supplied from the air supply source 100' to the nozzle 80', and a second air tube 122' that introduces compressed air supplied from the air supply source 100' to the second air flow section 71b. The first air tube 121' has an upper end attached to the rear end of the nozzle 80', and a lower end attached to the air supply source 100'. The second air tube 122' is formed by extending from the middle of the first air tube 121' in the axial direction, and a tip end attached to the second air flow section 71b. That is, in the second embodiment, the second air tube 122' is configured by branching off from the first air tube 121'.

[0088] [Configuration of air flow path and time difference creating mechanism] In the second embodiment, the first air flow path 22A' of the air flow path 22' is composed of a first air tube 121'. Also, the second air flow path 22B' of the air flow path 22' is composed of a second air tube 122' and an air flow section 71'. That is, in the second embodiment, the second air flow path 22B' is composed by branching off from the first air flow path 22A'. The time difference creating mechanism 23' is composed of a movable section 110B'.

[0089] [Method of using the ejection device according to the second embodiment] The jetting device 1' according to the second embodiment is used in an upright position, similar to the jetting device 1 according to the first embodiment. When using the jetting device 1', the user holds the gripping part 37, aims the jetting hole 82' at a predetermined jetting location, and presses the pressing part 116' of the movable part 110B'.

[0090] When the pressing portion 116' is pressed, the movable portion 110B' approaches the communication hole 113'. The rod portion 117' of the movable portion 110B' presses the switch 115' while approaching the communication hole 113', thereby activating the air supply source 100'. When the air supply source 100' is activated, compressed air is introduced into the nozzle 80' via the first air flow path 22A', and compressed air is introduced into the liquid storage container 10 via the second air flow path 22B'. In addition, when the movable portion 110B' reaches the communication hole 113', the blocking portion 116e' of the movable portion 110B' blocks the communication hole 113' (see FIG. 7).

[0091] When the communication hole 113' is blocked, the internal pressure of the liquid storage container 10 increases due to the compressed air supplied from the second air flow path 22B', and the liquid flow path 21 introduces the liquid into the nozzle 80'. The liquid introduced into the nozzle 80' collides with the air ejected from the second ejection hole 82b of the nozzle 80' immediately after being ejected from the first ejection hole 82a of the nozzle 80', and is scattered, and is ejected in an atomized state.

[0092] When the user stops using the ejection device 1', the user releases the pressing portion 116' to release the pressure on the pressing portion 116'. When the pressure on the pressing portion 116' is released, the movable portion 110B' moves away from the communication hole 113', and the closing portion 116e' of the movable portion 110B' opens the communication hole 113'. When the communication hole 113' is opened, the compressed air present inside the liquid storage container 10 is discharged to the atmosphere through the communication hole 113' and the housing 30', so that the internal pressure of the liquid storage container 10 drops and the introduction of the liquid to the nozzle 80' by the liquid flow path 21 is stopped. At this time, the compressed air continues to be introduced into the nozzle 80' by the first air flow path 22A', so the compressed air continues to be ejected from the nozzle 80'. Therefore, the liquid remaining inside the nozzle 80' can be discharged.

[0093] When the movable part 110B' moves further away from the communication hole 113', the rod part 117' of the movable part 110B' moves away from the switch 115' and the pressure on the switch 115' is released. When the pressure on the switch 115' is released, the air supply source 100' is stopped, the introduction of compressed air to the nozzle 80' via the first air flow path 22A' is stopped, and the introduction of compressed air to the liquid storage container 10 via the second air flow path 22B' is stopped.

[0094] [Advantages of the jetting device according to this embodiment] Thus, the ejection device of this embodiment comprises a liquid storage container capable of storing liquid, and an ejection device main body capable of holding the liquid storage container, and the ejection device main body has a nozzle capable of ejecting liquid and air, a liquid flow path that introduces the liquid stored in the liquid storage container into the nozzle, an air supply source capable of supplying compressed air, an air flow path that introduces the compressed air supplied from the air supply source into the nozzle, and a time difference creating mechanism that creates a difference between the timing of introducing the liquid into the nozzle and the timing of introducing the compressed air, and the time difference creating mechanism is configured to delay the timing of stopping the introduction of the compressed air relative to the timing of stopping the introduction of the liquid.

[0095] According to a jetting device having such a configuration, compressed air continues to be jetted even after the introduction of liquid into the nozzle is stopped, so that liquid remaining inside the nozzle can be discharged. Therefore, there is an advantage that liquid does not leak from the nozzle due to the internal pressure of the jetting device, and liquid leakage after liquid jetting can be prevented with a simple operation. In addition, since liquid remaining inside the nozzle is discharged, there is also an advantage that it is possible to prevent the liquid from adhering to the inside of the nozzle and clogging the nozzle's jet hole.

[0096] In the jetting device according to this embodiment, the time difference creating mechanism is configured to advance the timing of starting the introduction of compressed air relative to the timing of starting the introduction of liquid. With a jetting device configured in this way, the compressed air is ejected before the liquid, which has the advantage that uniform droplets can be obtained for the liquid ejected from the nozzle.

[0097] Furthermore, in the ejection device according to this embodiment, the ejection device main body further has a communication hole that connects the internal space of the liquid storage container with the atmosphere, and an operating unit that operates the air supply source, and the air flow path has a first air flow path that introduces compressed air supplied from the air supply source into the nozzle, and a second air flow path that introduces compressed air supplied from the air supply source into the liquid storage container, and the operating unit has a movable part configured to be able to move toward or away from the communication hole, and a switch that activates the air supply source when pressed by the movable part, and the time difference creating mechanism includes at least a movable part, and the movable part is configured to activate the air supply source by pressing the switch while approaching the communication hole, and is configured to increase the internal pressure of the liquid storage container by the compressed air supplied from the second air flow path by closing the communication hole when it reaches the communication hole, and the liquid flow path is configured to introduce liquid into the nozzle as the internal pressure of the liquid storage container increases. According to the jetting device having such a configuration, the operation of jetting liquid, the operation of stopping the jetting of liquid, the operation of advancing the timing of starting the introduction of compressed air relative to the timing of starting the introduction of liquid, and the operation of delaying the timing of stopping the introduction of compressed air relative to the timing of stopping the introduction of liquid can be realized simply by moving the movable part toward or away from the communication hole, which has the advantage of simplifying the operation and reducing the number of parts.

[0098] In the jetting device according to this embodiment, the jetting device body further includes a damper for slowing down the speed at which the movable part moves away from the communication hole. A jetting device having such a configuration has the advantage that it is easy to adjust the timing for stopping the introduction of compressed air and the timing for stopping the introduction of liquid.

[0099] [Variations] The ejection device according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the technical concept of the present invention.

[0100] For example, in the above-mentioned first and second embodiments, the jetting device 1 and the jetting device 1' are described as being used in an upright state, but the present invention is not limited thereto, and the jetting device 1 and the jetting device 1' may be used in an inverted state. In this case, the jetting device main body 20 and the jetting device main body 20' may not include the dip tube 50. Furthermore, when the jetting device 1 and the jetting device 1' are used in an inverted state, it is preferable that the liquid contained in the liquid container 10 is a high-viscosity liquid.

[0101] In addition, in the above-described embodiment, the timing at which the compressed air starts to be introduced is described as being earlier than the timing at which the liquid starts to be introduced, but this is not limited to this, and the timing at which the compressed air starts to be introduced and the timing at which the liquid starts to be introduced may be the same.

[0102] Furthermore, the ejection device may have a solenoid valve capable of closing the communication hole and a solenoid valve actuation switch for actuating the solenoid valve, and after the solenoid valve actuation switch is pressed to actuate the solenoid valve when the movable part is separated from the communication hole, the pressure of the movable part against the switch is released to stop the air supply source. Also, the operation of the solenoid valve may be controlled by a microcomputer.

[0103] In addition, in the above-described embodiment, the liquid and air are ejected by pressing the operating unit, but this is not limited to this, and for example, the liquid and air may be ejected by pulling the operating unit.

[0104] Furthermore, in the above-described embodiment, the internal pressure of the liquid storage container is increased by compressed air supplied from the second air flow path, but this is not limited to this, and the internal pressure of the liquid storage container may be increased manually.

[0105] In addition, in the above-mentioned first embodiment, the ejection device main body 20 is described as being equipped with a damper 140 that slows down the separation speed of the movable part 110B from the communication hole 113, but this is not limited to this, and the configuration may be such that the damper 140 is not provided.

[0106] It is apparent from the claims that the above-mentioned modifications are included within the scope of the present invention. [Explanation of symbols]

[0107] 1, 1': Ejection device 10: Liquid storage container 11: Bottom 12: Torso 13: Mouth 20, 20': Ejection device main body 21: Liquid flow path 22, 22': Air flow path 22A, 22A': First air flow path 22B, 22B': second air flow path 23, 23': Time difference creation mechanism 30, 30': Housing 31: Bottom part 32:Top part 33: Front part 33a: Lower front part 33b: Middle front part 33c: Upper front part 34: Rear part 35: Side part 36: Nozzle opening 37: Grip part 40: Container holding part 50:Dip tube 60: Tube holding part 70: Liquid flow section 71, 71': Air flow section 71a: First air flow section 71b: Second air flow section 80, 80': Nozzle 81:Mixing room 82, 82' :Blowout hole 82a: No. 1 ejection hole 82b: 2nd blowout hole 83: Nozzle flow path 83a: First nozzle flow path 83b: second nozzle flow path 90: Liquid tube 100, 100': Air supply source 110, 110': Operation section 110A: Fixed part 110B, 110B': Movable part 111: 1st hole 112: 2nd hole 113, 113': Communication hole 114: Air inlet 115, 115': Switch 115a: First switch 115b: Second switch 116, 116': pressing part 116a: Pressing surface part 116b: Peripheral part 116c: Extended surface part 116d:Protrusion 116e, 116e': Occlusion 117, 117': Rod section 118: Piston part 119: Sealing part 120, 120': Air tube 121, 121': First air tube 122, 122': 2nd air tube 130, 130': Power supply section 140: Damper

Claims

1. A liquid container capable of holding liquid, A spraying device body capable of holding the aforementioned liquid container and Equipped with, The ejection device body is, A nozzle capable of ejecting liquid and air, A liquid channel for introducing the liquid contained in the liquid container into the nozzle, An air supply source capable of supplying compressed air, An air passage for introducing compressed air supplied from the air supply source into the nozzle, A time difference creation mechanism that provides a difference between the timing of liquid introduction to the nozzle and the timing of compressed air introduction. It has, The aforementioned time difference creation mechanism is configured to delay the timing of stopping the introduction of compressed air compared to the timing of stopping the introduction of liquid. Squirting device.

2. The interval between the cessation of liquid introduction and the cessation of compressed air introduction is between 0.1 seconds and 3 seconds. The ejection device according to claim 1.

3. The aforementioned time difference creation mechanism is configured to start the introduction of compressed air earlier than the start of the introduction of liquid. The ejection device according to claim 1 or 2.

4. The ejection device body is, A communication hole that connects the internal space of the liquid container to the atmosphere, An operating unit for activating the aforementioned air supply source and It also has, The aforementioned air passage is A first air passage for introducing compressed air supplied from the air supply source to the nozzle, A second air passage introduces compressed air supplied from the air supply source into the liquid container. It has, The aforementioned operating unit is A movable part configured to be able to approach or move away from the aforementioned communication hole, A switch that activates the air supply source when pressed against the movable part. It has, The aforementioned time difference generating mechanism includes at least the movable part, The movable part is configured to activate the air supply source by pressing the switch while approaching the communication hole, and to increase the internal pressure of the liquid container by closing the communication hole when it reaches the communication hole, thereby allowing compressed air supplied from the second air passage to increase the internal pressure of the liquid container. The liquid channel is configured to introduce liquid into the nozzle as the internal pressure of the liquid container increases. The ejection device according to claim 1 or 2.

5. The ejection device body further includes a damper that reduces the separation speed of the movable part from the communication hole. The ejection device according to claim 4.

6. The flow rate of compressed air supplied from the aforementioned air supply source is 0.5 L / min or more and 20 L / min or less. The pressure of the compressed air supplied from the aforementioned air supply source is between 15 kPa and 400 kPa. The ejection device according to claim 1 or 2.

7. A spraying device body capable of holding a liquid container capable of holding a liquid, A nozzle capable of ejecting liquid and air, A liquid channel for introducing the liquid contained in the liquid container into the nozzle, An air supply source capable of supplying compressed air, An air passage for introducing compressed air supplied from the air supply source into the nozzle, A time difference creation mechanism that provides a difference between the timing of liquid introduction to the nozzle and the timing of compressed air introduction. It has, The aforementioned time difference creation mechanism is configured to delay the timing of stopping the introduction of compressed air compared to the timing of stopping the introduction of liquid. The main body of the ejection device.

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