Trigger type liquid discharge device and trigger type spray container

Abstract

To provide a trigger type liquid discharge device and a trigger type spray container capable of increasing a liquid discharge distance.SOLUTION: A trigger type liquid discharge device includes: a discharge device body incorporating a pump capable of sucking and pumping liquid in a container body; an operation lever that actuates the pump; and a liquid discharge nozzle that discharges the liquid by actuation of the pump. The liquid discharge nozzle includes: a discharge port capable of discharging the liquid; a nozzle flow path for circulation of the liquid pumped from the discharge device body toward the discharge port; and a space formed between the discharge port and the nozzle flow path and continuing to the discharge port and the nozzle flow path. A cross section of the space is larger than a cross-sectional area of the nozzle flow path. The liquid discharge nozzle further includes: an outside body having a front wall and a peripheral wall extending rearward from the entire region of an outer edge part of the front wall, and an inside body provided inside and in a rear side of the outside body and having a front surface facing the front wall. The space is defined by an inner surface of the front wall, an inner peripheral surface of the peripheral wall, and the front surface.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a trigger-type liquid dispenser and a trigger-type spray container. [Background technology]

[0002] Trigger-type liquid dispensers equipped with a liquid dispense nozzle capable of discharging liquid have been known for some time. For example, Patent Document 1 describes a trigger-type liquid dispenser equipped with a nozzle mechanism that can switch between a direct injection mode, in which the nozzle hole is opened from the shared groove via the first groove, and a mist ejection mode, in which the nozzle hole is opened from the shared groove via the second groove and spin groove, by rotating a cap. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-087530 Summary of the Invention [Problem to be solved by the invention]

[0004] In the trigger-type liquid dispenser described in Patent Document 1, when the nozzle mechanism is in mist ejection mode, the liquid flows through the spin groove, causing the liquid to be ejected from the nozzle hole in a state of varying flow strengths, resulting in the liquid spinning and spreading, causing the liquid to scatter. Furthermore, when the nozzle mechanism is in direct injection mode, the liquid does not flow through the spin groove, causing the liquid to be ejected in a highly straight line from the nozzle hole. However, the flow of the liquid flowing through the first groove is not uniform, causing the liquid to be ejected in a state of varying flow speeds, resulting in the liquid sprayed from the nozzle hole spreading in a manner similar to rotation, causing the liquid to scatter. This type of liquid scattering reduces the liquid ejection distance.

[0005] The present invention relates to a trigger-type liquid dispenser and a trigger-type spray container that can increase the liquid dispensing distance. [Means for solving the problem]

[0006] The trigger-type liquid ejector includes a container body incorporating a pump capable of sucking in and pumping out liquid from the container body, an operating lever for operating the pump, and a liquid ejection nozzle for ejecting liquid by operating the pump, wherein the liquid ejection nozzle has an ejection outlet capable of ejecting liquid, a nozzle flow path for circulating liquid pumped from the pump toward the ejection outlet, and a space formed between the ejection outlet and the nozzle flow path and communicating with the ejection outlet and the nozzle flow path, and the cross-sectional area of ​​the space is larger than the cross-sectional area of ​​the nozzle flow path. [Effects of the Invention]

[0007] According to the trigger-type liquid ejector of the present invention, it is possible to increase the ejection distance of liquid. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing the configuration of a trigger-type spray container according to a first embodiment. FIG. [Figure 2] FIG. 2 is a cross-sectional perspective view showing the liquid ejection nozzle according to the first embodiment. [Figure 3] 2 is a cross-sectional view showing a cross section along the liquid ejection direction of the liquid ejection nozzle according to the first embodiment. FIG. [Figure 4] 1 is an image taken immediately after the liquid is ejected from the trigger-type liquid ejector according to Example 1. [Figure 5] 10 is an image taken immediately after the liquid is ejected from the trigger-type liquid ejector according to Comparative Example 1. [Figure 6] FIG. 10 is a schematic view showing the configuration of a trigger-type liquid ejector according to a second embodiment. [Figure 7] FIG. 7 is a partial enlarged view of part A shown in FIG. [Figure 8]FIG. 2 is a view of the first member and the second member assembled together as viewed from the tip end side. [Figure 9] 10 is a view of the first member and the second member assembled together as viewed from the base end side. FIG. [Figure 10] FIG. 3 is a cross-sectional view taken along the axial direction of the first member. [Figure 11] FIG. 2 is a view of the first member as seen from the base end side. [Figure 12] FIG. 2 is a perspective view of a first member as viewed from the base end side. [Figure 13] 1 is a schematic diagram showing the pattern of liquid sprayed by a trigger-type spray container. [Figure 14] 10 is a graph showing the change in the non-deposited rate of liquid and the outer diameter of the deposited pattern for each spray distance in Example 3 and Comparative Example 3. [Figure 15] 10 is a graph showing the change in the non-adhered rate of liquid and the outer diameter of the adhesion pattern for each spray distance in Examples 4 to 6. [Figure 16A] 10 is a photographed image of a pattern of liquid sprayed by a trigger-type spray container according to Comparative Example 4. [Figure 16B] 10 is a photographed image of a pattern of liquid sprayed by a trigger-type spray container according to Example 7. [Figure 17] FIG. 10 is a front perspective view showing a liquid ejection nozzle according to a modified example. [Figure 18] FIG. 10 is a rear perspective view showing a liquid ejection nozzle according to a modified example. [Figure 19] FIG. 10 is a front view showing a liquid ejection nozzle according to a modified example. [Figure 20] 10 is a cross-sectional view showing a cross section along the liquid ejection direction of a liquid ejection nozzle according to a modified example. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] 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 first embodiment, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0010] [Overall configuration of trigger-type spray container] 1, the trigger-type spray container 1' according to the first embodiment includes a container body 100' that can store a liquid, and a trigger-type liquid dispenser 200' that can be attached to the container body 100' and that can dispense the liquid in the container body 100' by manual operation by a user. The trigger-type spray container 1' according to the first embodiment can be used to dispense liquids such as household cleaners, mold removers, hair styling products, air fresheners, and deodorizers.

[0011] Hereinafter, in the first embodiment, for convenience of explanation, the direction of liquid ejection by the trigger-type liquid ejector 200' (the direction of liquid ejection from the ejection port 311a' described below) may be referred to as the "forward" direction, and the opposite direction as the "rear" direction. Furthermore, in the state where the trigger-type liquid ejector 200' is attached to the container body 100' (the state in FIG. 1), the side where the trigger-type liquid ejector 200' is located may be referred to as the "upper" side, and the side where the container body 100' is located may be referred to as the "lower" side.

[0012] [Container body configuration] 1, the container body 100' is a cylindrical container with a bottom and a small-diameter cylindrical mouth 110' at the top, and is configured to be able to contain a liquid in its internal space. Note that various known configurations can be adopted for this container body 100', and detailed description thereof will be omitted.

[0013] [Configuration of trigger-type liquid dispenser] As shown in FIG. 1, the trigger-type liquid dispenser 200′ according to the first embodiment comprises a dispenser body 210′ ​​incorporating a pump 220′ capable of sucking and pumping the liquid in the container body 100′, an operating lever 230′ (trigger) for operating the pump 220′, and a liquid dispenser nozzle 240′ for discharging the liquid by operating the pump 220′.

[0014] In addition, in the trigger-type liquid ejector 200' according to the first embodiment, the configuration other than that related to the liquid ejection nozzle 240' can be adapted from the configurations of various known trigger-type liquid ejectors, so the following will only provide a brief explanation of one example and will not provide a detailed explanation.

[0015] The dispenser body 210′ ​​comprises a cap member 211′ configured to be attachable to the nozzle 110′ of the container body 100′, a vertical tube 212′ extending upward from the cap member 211′, a horizontal tube 213′ extending forward from the upper end of the vertical tube 212′ and connected to the liquid discharge nozzle 240′, a cylindrical holding portion 214′ extending forward from the middle of the vertical tube 212′, a pump 220′ held within the holding portion 214′, and a head cover 215′ that covers the vertical tube 212′, the horizontal tube 213′, the holding portion 214′, the pump 220′ and part of the operating lever 230′.

[0016] The vertical tube 212′ has a cylindrical neck portion 212a′ at its lower end, which is inserted into an upper opening (not shown) of the cap member 211′. The neck portion 212a′ has a smaller width (i.e., diameter) in a direction intersecting the swing direction of the operating lever 230′ than the cap member 211′. The vertical tube 212′ also has a cylindrical intake 212b′ inside it. The lower end of the intake 212b′ is connected to a pipe 216′ extending inside the container body 100′, and the upper end is connected to the rear end of the horizontal tube 213′. As a result, a delivery path from the container body 100′ to the liquid discharge nozzle 240′ is formed by the pipe 216′, the intake 212b′, and the horizontal tube 213′. The intake 212b' has a communication hole 212c' formed therein that communicates with the pump chamber 224' described later, and an intake valve 212d' and a discharge valve 212e' are arranged on the upstream and downstream sides of the communication hole 212c', respectively, so that by operating the pump 220', liquid can be sucked from the container body 100' into the pump chamber 224' and pressure-fed from the pump chamber 224' to the liquid discharge nozzle 240'.

[0017] The pump 220′ includes a cylindrical cylinder 221′ fitted and held in the holder 214′, and a piston 222′ accommodated inside the cylinder 221′ so as to be capable of reciprocating motion. The piston 222′ has a smaller diameter than the cylinder 221′, thereby forming a gap between its outer circumferential surface and the inner circumferential surface of the cylinder 221′. An annular seal portion 223′ protrudes from the rear end of the piston 222′ and slidably and liquid-tightly contacts the inner circumferential surface of the cylinder 221′. The seal portion 223′ seals the inside of the cylinder 221′, thereby forming a pump chamber 224′ behind the seal portion 223′. The front end of the piston 222′ is engaged with an operating lever 230′, and is biased by a coil spring 225′ provided inside the piston 222′ in a direction that pushes back the operating lever 230′ (in the direction of expanding the pump chamber 224′).

[0018] The operating lever 230' has its upper end (base end) pivotally mounted to the tip end of the horizontal cylinder 213' of the dispenser main body 210' so as to be swingable, and is provided hanging downward (toward the container main body 100') from the horizontal cylinder 213' so as to face the vertical cylinder 212', the holding portion 214', and the cap member 211'. The rear surface of the operating lever 230' is engaged with the front end of the piston 222' as described above, and is configured so that the piston 222' is reciprocated by the reciprocating movement of the operating lever 230'. In the trigger-type liquid dispenser 200' according to the first embodiment, a space is formed between the operating lever 230' and the cap member 211', the vertical cylinder 212', and the horizontal cylinder 213' of the dispenser main body 210' by the operating lever 230' hanging down in this manner, and the piston 222' of the pump 220' is disposed in this space.

[0019] 1 to 3, the liquid discharge nozzle 240′ comprises a nozzle body 300′ provided at the tip of the horizontal tube 213′ of the discharger body 210′, and a nozzle cover 400′ that covers the nozzle body 300′. The nozzle body 300′ may be configured to be detachable from the discharger body 210′, or may be configured to be non-detachable.

[0020] The nozzle body 300' comprises an outer body (first member) 310' having a discharge port 311a' capable of discharging liquid, and an inner body (second member) 320' provided inside and on the rear side of the outer body 310'.

[0021] The outer main body 310′ has a circular front wall 311′ and a peripheral wall 312′ extending rearward from the entire outer periphery of the front wall 311′, and is generally formed in a cylindrical shape that is open toward the rear. A discharge port 311a′ is formed in the center of the front wall 311′. The discharge port 311a′ is an opening that penetrates from the outer surface to the inner surface of the front wall 311′. Note that in the first embodiment, the front wall 311′ is described as being formed in a circular shape, but is not limited thereto. For example, the front wall 311′ may be formed in a square shape, a rectangular shape, a triangular shape, or another shape. However, a circular shape is more preferable from the viewpoint of uniformly distributing the pumped liquid to the nozzle.

[0022] The inner main body 320′ has a circular front surface 321′ facing the front wall 311′ of the outer main body 310′, a circular rear surface 322′ facing the front surface 321′, and a peripheral surface 323′ extending from the outer peripheral edge of the front surface 321′ to the outer peripheral edge of the rear surface 322′, and is formed into a cylindrical shape as a whole. The front surface 321′ and the rear surface 322′ are formed to be the same shape and size, and are sized so that the inner main body 320′ can be fitted into the outer main body 310′. The inner main body 320′ is provided inside and on the rear side of the outer main body 310′, and is formed to be shorter in the front-to-rear direction than the outer main body 310′. Note that in the first embodiment, the inner main body 320′ has been described as being formed into a cylindrical shape, but is not limited thereto and may be formed into a rectangular prism shape, for example.

[0023] The inner main body 320′ also has nozzle channels 324′ at its upper and lower ends, which allow the liquid pumped from the pump 220′ to flow toward the discharge port 311a′. That is, in the first embodiment, the discharge port 311a′ and the nozzle channels 324′ are not arranged on the same straight line. The nozzle channels 324′ are openings formed penetrating from the front surface 321′ to the rear surface 322′, and communicate with the supply path of the dispenser main body 210′. Note that in the first embodiment, the nozzle channels 324′ have been described as being provided at the upper and lower ends of the inner main body 320′, but this is not limiting, and the nozzle channels 324′ may be provided at any position on the inner main body 320′, and one, two, or more nozzle channels may be provided.

[0024] The nozzle body 300′ also has a flow velocity buffering region 330′ formed between the discharge port 311a′ and the nozzle flow path 324′ and communicating with the discharge port 311a′ and the nozzle flow path 324′. Here, the “flow velocity buffering region” refers to a space having a cross-sectional area larger than the cross-sectional area of ​​the nozzle flow path 324′, and serves to uniformize the flow velocity of the liquid flowing through the nozzle flow path 324′. Furthermore, the “cross-sectional area of ​​the nozzle flow path 324′” here refers to the total cross-sectional area of ​​the nozzle flow paths 324′ when multiple nozzle flow paths 324′ are provided. If the cross-sectional areas of the nozzle flow paths 324′ vary locally, it refers to the cross-sectional area of ​​the largest portion. In the first embodiment, the flow velocity buffering region 330′ is a cylindrical space defined by the inner surface of the front wall 311′, the inner circumferential surface of the peripheral wall 312′, and the front surface 321′. The cross-sectional area of ​​the flow velocity buffering region 330' is preferably constant from the front end to the rear end. From this perspective, the flow velocity buffering region 330' is preferably formed in a substantially rectangular shape in a cross section taken along the axis of the outlet 311a' as shown in Fig. 3. In the first embodiment, the flow velocity buffering region 330' is described as being a cylindrical space, but is not limited to this and may be, for example, a prismatic space.

[0025] Furthermore, in the first embodiment, the cross-sectional area of ​​the flow velocity buffering region 330' is preferably 5 to 2000 times the cross-sectional area of ​​the discharge port 311a', more preferably 10 to 1000 times, and most preferably 15 to 500 times. Having such a cross-sectional area of ​​the flow velocity buffering region 330' has the advantage of making the flow velocity of the liquid flowing from the nozzle flow path 324' uniform. Furthermore, the larger the cross-sectional area of ​​the flow velocity buffering region 330', the more uniform the flow velocity of a liquid with a lower viscosity can be.

[0026] In the first embodiment, the spatial volume of the flow velocity buffering region 330' is preferably 5 to 3000 times the opening volume of the discharge port 311a' (the volume at the minimum diameter of the discharge port 311a'), more preferably 20 to 1500 times, and most preferably 50 to 800 times. For example, if the minimum diameter of the discharge port 311a' is 0.8 mm, the length along the liquid discharge direction at the minimum diameter of the discharge port 311a' (the length of the discharge path) is 0.25 mm, and the opening volume of the discharge port 311a' is (0.8 / 2) 2 x 3.14 (pi) x 0.25 mm = 0.1256 mm 3 The diameter of the flow velocity buffering region 330' is 3.5 mm, the length of the flow velocity buffering region 330' along the liquid discharge direction is 9.2 mm, and the spatial volume of the flow velocity buffering region 330' is (3.5 / 2) 2 x 3.14 (pi) x 9.2 = 88.4695 mm 3 In this case, the spatial volume of the flow velocity buffering region 330' is 88.4695 / 0.1256, or 704.375 times the opening volume of the discharge port 311a', which satisfies the above relationship. Having such a spatial volume of the flow velocity buffering region 330' has the advantage of making the flow velocity of the liquid flowing from the nozzle flow path 324' uniform. Furthermore, the larger the spatial volume of the flow velocity buffering region 330', the more uniform the flow velocity of a liquid with a lower viscosity can be made.

[0027] [Method of using the trigger-type spray container according to the first embodiment] First, the operation of the trigger-type spray container 1' according to the first embodiment will be described. In the trigger-type spray container 1' according to the first embodiment, the operating lever 230' of the trigger-type liquid dispenser 200' is pulled toward the container body 100' to move the piston 222' back relative to the cylinder 221', thereby pressurizing the liquid in the pump chamber 224', and the pressurizing force presses the suction valve 212d' against the valve seat to maintain a closed state, while moving the discharge valve 212e' away from the valve seat to an open state, thereby discharging the liquid in the pump chamber 224' to the outside from the discharge port 311a' of the liquid discharge nozzle 240' via the supply path.

[0028] In the first embodiment, since a flow velocity buffering region 330' is formed between the discharge port 311a' and the nozzle flow path 324', liquid with varying flow strengths is not discharged from the discharge port 311a', and liquid with a high degree of linearity is discharged. As a result, the discharge distance of the liquid discharged from the discharge port 311a' increases.

[0029] Furthermore, when the operating lever 230' is released after discharging the liquid from the trigger-type spray container 1', the piston 222' and operating lever 230' are pushed forward by the biasing force of the coil spring 225', which creates a negative pressure in the pump chamber 224', which in turn separates the suction valve 212d' from its valve seat to open it, and presses the discharge valve 212e' against the valve seat to close it, allowing the liquid in the container body 100' to flow into the pump chamber 224' through the pipe 216'. By repeatedly pulling and releasing the operating lever 230' in this way, the liquid in the container body 100' can be continuously discharged from the liquid discharge nozzle 240'.

[0030] Because the trigger-type spray container 1' operates in this manner, a user of the trigger-type spray container 1' can hold the trigger-type spray container 1' and pull the operating lever 230' of the trigger-type liquid dispenser 200' toward the container body 100' to dispense the liquid in the container body 100' toward the object to be dispensed.

[0031] The trigger-type liquid ejector 200' according to the first embodiment can increase the ejection distance of the liquid regardless of the viscosity of the liquid, but the difference from conventional trigger-type liquid ejectors (for example, the trigger-type liquid ejector described in Patent Document 1) becomes more pronounced, particularly when the liquid has a low viscosity. In this case, the viscosity of the liquid is preferably from 1 mPa·s to 500 mPa·s, more preferably from 1 mPa·s to 100 mPa·s, and most preferably from 1 mPa·s to 10 mPa·s.

[0032] [Advantages of the trigger-type liquid ejector according to the first embodiment] As described above, the trigger-type liquid dispenser 200′ according to the first embodiment is a trigger-type liquid dispenser 200′ comprising a dispenser body 210′ ​​incorporating a pump 220′ capable of sucking in and pressurizing the liquid in the container body 100′, an operating lever 230′ for operating the pump 220′, and a liquid discharge nozzle 240′ for discharging the liquid by operating the pump 220′, and the liquid discharge nozzle 240′ has a discharge port 311a′ capable of discharging the liquid, a nozzle flow path 324′ for circulating the liquid pressurized from the pump 220′ toward the discharge port 311a′, and a flow rate buffering region 330′ formed between the discharge port 311a′ and the nozzle flow path 324′ and communicating with the discharge port 311a′ and the nozzle flow path 324′.

[0033] According to the trigger-type liquid dispenser 200' having such a configuration, no groove is formed between the discharge port 311a' and the nozzle flow path 324', and a flow velocity buffering region 330' is formed, so that liquid with varying flow strengths is not dispensed from the discharge port 311a', and liquid with a high degree of straightness is dispensed. This has the advantage of making it possible to increase the liquid dispense distance, which is at least twice as long as the liquid dispense distance of conventional trigger-type liquid dispensers. Furthermore, because liquid with a high degree of straightness can be dispensed, there is the advantage that liquid can be dispensed accurately toward a targeted location.

[0034] Furthermore, the trigger-type liquid dispenser 200' according to the first embodiment is provided with a plurality of nozzle flow paths 324'. The trigger-type liquid dispenser 200' having such a configuration has the advantage of being able to dispense a large amount of liquid in one dispense operation.

[0035] Furthermore, in the trigger-type liquid ejector 200' according to the first embodiment, the ejection port 311a' and the nozzle flow path 324' are not arranged on the same straight line. With the trigger-type liquid ejector 200' having such a configuration, even if the ejection port 311a' and the nozzle flow path 324' are not arranged on the same straight line and the structure makes it difficult to eject liquid with a high degree of linearity, the flow rate of the liquid can be made uniform in the flow rate buffering region 330', which has the advantage of making it possible to eject liquid with a high degree of linearity.

[0036] Furthermore, in the trigger-type liquid dispenser 200′ according to the first embodiment, the liquid dispense nozzle 240′ further comprises an outer main body 310′ having a circular front wall 311′ and a peripheral wall 312′ extending rearward from the entire outer peripheral edge of the front wall 311′, and an inner main body 320′ provided inside and at the rear side of the outer main body 310′ and having a circular front surface 321′ facing the front wall 311′ and a circular rear surface 322′ facing the front surface 321′, the dispense outlet 311a′ is provided in the center of the front wall 311′, the nozzle flow path 324′ is formed penetrating from the front surface 321′ to the rear surface 322′, and the flow rate buffering region 330′ is a cylindrical space defined by the inner surface of the front wall 311′, the inner peripheral surface of the peripheral wall 312′, and the front surface 321′. According to the trigger-type liquid ejector 200' having such a configuration, the flow rate buffering area 330' is a cylindrical space defined by the inner surface of the front wall 311', the inner peripheral surface of the peripheral wall 312', and the front surface 321', and no grooves or the like that would hinder the uniformity of the liquid flow rate are formed between the ejection port 311a' and the nozzle flow path 324', which has the advantage of uniforming the flow rate of the liquid flowing from the nozzle flow path 324', thereby making it possible to eject liquid with high straightness.

[0037] [Configuration of trigger-type liquid ejector according to the second embodiment] Next, the configuration of a trigger-type liquid ejector according to a second embodiment will be described with reference to Figures 6 to 16. In all the drawings, similar components are given the same reference numerals, and duplicated descriptions will be omitted as appropriate. In the following description, the downward direction in Fig. 6 may be referred to as the downward direction, and the upward direction as the upward direction. More specifically, in the state where the trigger-type liquid ejector 100 is attached to the container body 210 (the state in Fig. 6), the side where the trigger-type liquid ejector 100 is located may be referred to as the upward direction, and the side where the container body 210 is located may be referred to as the downward direction. Furthermore, the side in the direction of ejection of liquid by the trigger-type liquid ejector 100 (the direction of ejection of liquid from the ejection port 42, which will be described later) may be referred to as the front or tip side, and the side opposite to the ejection direction may be referred to as the rear or base side. In Figure 6, only the outline of the portion of the trigger-type liquid dispenser 100 outside the curve H is shown. Also, in Figures 8 and 9, only a portion of the first member 60 and the second member 70 (more specifically, the insertion portion 73 described below) is shown. In addition, in FIG. 13, the pattern of the liquid sprayed by the trigger-type liquid dispenser 100 is shown by the broken line.

[0038] The trigger-type liquid ejector 100 according to this embodiment is attached to a container body 210 that stores liquid, and ejects the liquid in a mist form by operating a trigger (operating lever 30, which will be described later). As shown in Figure 6, the trigger-type liquid dispenser 100 comprises a dispenser body 10 incorporating a pump 20 capable of sucking and discharging liquid in a container body 210, and a liquid discharge nozzle 40 that dispenses (sprays) the liquid dispensed from the dispenser body 10 in a mist form.

[0039] Here, the adhesion rate of the liquid adhering to the target surface 310 (Figure 13) placed at a spray distance of 80 cm from the liquid discharge nozzle 40 is 25% or more and 100% or less, and the outer diameter of the liquid adhesion pattern on the target surface 310 is 90 mm or more and 210 mm or less. From the viewpoint of spraying an appropriate amount of liquid onto the target surface, it is preferable that the upper limit of the adhesion rate of the liquid adhering to the target surface 310 placed at a spray distance of 80 cm from the liquid discharge nozzle 40 is 75% or less, more preferably the upper limit of the adhesion rate is 65% or less, and even more preferably the upper limit of the adhesion rate is 55% or less. From the viewpoint of spraying an appropriate amount of liquid onto the target surface, it is preferable that the lower limit of the adhesion rate of the liquid adhering to the target surface 310 placed at a spray distance of 80 cm from the liquid discharge nozzle 40 is 25% or more, more preferably, the lower limit of the adhesion rate is 35% or more, and even more preferably, the lower limit of the adhesion rate is 45% or more. From the viewpoint of spraying the liquid over the desired range, it is preferable that the upper limit of the outer diameter of the liquid adhesion pattern on the target surface 310 placed at a spray distance of 80 cm from the liquid discharge nozzle 40 is 210 mm or less, more preferably the upper limit of the outer diameter of the adhesion pattern is 205 mm or less, and even more preferably the upper limit of the outer diameter of the adhesion pattern is 195 mm or less. From the viewpoint of spraying the liquid over the desired range, it is preferable that the lower limit of the outer diameter of the liquid adhesion pattern on the target surface 310 placed at a spray distance of 80 cm from the liquid discharge nozzle 40 is 90 mm or more, more preferably the lower limit of the outer diameter of the adhesion pattern is 120 mm or more, and even more preferably the lower limit of the outer diameter of the adhesion pattern is 130 mm or more.

[0040] In addition, the adhesion rate of the liquid adhering to the target surface 310 placed at a spray distance of 40 cm from the liquid discharge nozzle 40 is 65% or more and 100% or less, and the outer diameter of the liquid adhesion pattern on the target surface 310 is 75 mm or more and 180 mm or less. From the viewpoint of spraying an appropriate amount of liquid onto the target surface, it is preferable that the upper limit of the adhesion rate of the liquid adhering to the target surface 310 placed at a spray distance of 40 cm from the liquid discharge nozzle 40 is 100% or less, more preferably the upper limit of the adhesion rate is 90% or less, and even more preferably the upper limit of the adhesion rate is 85% or less. From the viewpoint of spraying an appropriate amount of liquid onto the target surface, it is preferable that the lower limit of the adhesion rate of the liquid adhering to the target surface 310 placed at a spray distance of 40 cm from the liquid discharge nozzle 40 is 65% or more, more preferably the lower limit of the adhesion rate is 70% or more, and even more preferably the lower limit of the adhesion rate is 75% or more. From the viewpoint of spraying the liquid over the desired range, it is preferable that the upper limit of the outer diameter of the liquid adhesion pattern on the target surface 310 placed at a spray distance of 40 cm from the liquid discharge nozzle 40 is 180 mm or less, more preferably the upper limit of the outer diameter of the adhesion pattern is 175 mm or less, and even more preferably the upper limit of the outer diameter of the adhesion pattern is 165 mm or less. From the viewpoint of spraying the liquid over the desired range, it is preferable that the lower limit of the outer diameter of the liquid adhesion pattern on the target surface 310 placed at a spray distance of 40 cm from the liquid discharge nozzle 40 is 75 mm or more, more preferably the lower limit of the outer diameter of the adhesion pattern is 120 mm or more, and even more preferably the lower limit of the outer diameter of the adhesion pattern is 145 mm or more.

[0041] The "spray distance" here refers to the horizontal distance L3 (FIG. 13) from the discharge port 42 (described in detail later) of the liquid discharge nozzle 40 to the target surface 310. Furthermore, the "target surface 310" referred to here is a flat, hydrophilic, rough surface. More specifically, in this embodiment, the target surface for the "adhesion rate of liquid adhering to target surface 310" is a water-absorbent paper sheet, and the target surface for the "outer diameter of the liquid adhesion pattern on target surface 310" is a water-discoloring paper sheet (a property in which only the areas where liquid is adhered change color and the original color returns when the liquid evaporates). Furthermore, the "liquid adhesion rate" is the mass of liquid adhered to the target surface 310 / the mass of liquid ejected from the liquid ejection nozzle 40×100. Furthermore, the "liquid deposition pattern" refers to the shape of a collection of continuous liquid deposition marks, which is formed immediately after spraying liquid onto the target surface 310 (more specifically, within 5 seconds from the moment the liquid deposits on the target surface 310, if the target surface 310 is a hydrophilic paper sheet) with the trigger-type liquid ejector 100 positioned so that the axis AX1 (FIG. 6) of the liquid discharge nozzle 40 is oriented horizontally and perpendicular to the target surface 310, and is a roughly circular shape including an ellipse. More specifically, the liquid deposition pattern includes points where the liquid deposition marks are directly connected to each other radially outward from the center of the liquid deposition pattern. The "outer diameter of the liquid deposition pattern" refers to the maximum diameter D2 (FIG. 13) of the deposition pattern formed on the target surface (more specifically, points where the above-mentioned liquid deposition marks are directly connected to each other). Also, "discharging a liquid in the form of a mist" means discharging the liquid in the form of an aerosol (a state in which the liquid is suspended in the air as minute particles).

[0042] The trigger-type liquid dispenser 100 configured as described above can spray liquid over a longer distance while maintaining a sufficient adhesion rate of the liquid adhering to the target surface 310 and the outer diameter of the adhesion pattern. This makes it easier to evenly spray a sufficient amount of liquid onto targets located at a long distance. More specifically, when spraying liquid onto targets such as carpets, curtains, and bedding (such as comforters and sheets) that have a large surface area, or walls that separate obstacles such as bathtubs and beds, the ability to spray liquid from a long distance makes it easy to spray liquid widely onto these targets without having to move around the target appropriately or assume an unnatural posture that puts strain on the body.

[0043] In the present invention, the trigger-type liquid dispenser 100 only needs to have at least one of the above-mentioned features that the adhesion rate of liquid adhering to the target surface 310 placed at a spray distance of 80 cm is 25% to 100% and the outer diameter of the liquid adhesion pattern on the target surface 310 is 90 mm to 210 mm, and the feature that the adhesion rate of liquid adhering to the target surface 310 placed at a spray distance of 40 cm is 65% to 100% and the outer diameter of the liquid adhesion pattern on the target surface 310 is 75 mm to 180 mm. In this embodiment, the trigger-type liquid dispenser 100 has both of the above-mentioned two features. That is, the trigger-type liquid ejector 100 of this embodiment has an adhesion rate of liquid adhering to a target surface 310 placed at a spray distance of 80 cm from the liquid ejection nozzle 40 of 25% or more and 100% or less, and the outer diameter of the liquid adhesion pattern on the target surface 310 is 90 mm or more and 210 mm or less, and the adhesion rate of liquid adhering to a target surface 310 placed at a spray distance of 40 cm from the liquid ejection nozzle 40 is 65% or more and 100% or less, and the outer diameter of the liquid adhesion pattern on the target surface 310 is 75 mm or more and 180 mm or less.

[0044] 6, the trigger-type spray container 200 according to this embodiment includes a container body 210 capable of storing liquid, and the above-described trigger-type liquid dispenser 100. In other words, the trigger-type liquid dispenser 100 is made up of the components of the trigger-type spray container 200 excluding the container body 210. The shape of the container body 210 is not particularly limited, but for example, it is a container formed in a cylindrical shape with a bottom and a small-diameter cylindrical mouth 220 at the top, and is configured to be able to contain a liquid in its internal space. In Fig. 6, the container body 210 is shown by a two-dot chain line. The trigger-type liquid dispenser 100 comprises a cap member 11 attached to the nozzle 220 of the container body 210, the dispenser body 10 described above, and a liquid dispenser nozzle 40, and the dispenser body 10 and the liquid dispenser nozzle 40 are held by the cap member 11. A liquid-filled trigger-type spray container 300 according to this embodiment is formed by filling the container body 210 of the trigger-type spray container 200 with liquid.

[0045] That is, the liquid-filled trigger-type spray container 300 of this embodiment is a liquid-filled trigger-type spray container that includes the trigger-type spray container 200 of this embodiment, and the trigger-type spray container 200 includes a container body 210 and a trigger-type liquid dispenser 100 that is attached to the container body 210, and the container body 210 is filled with liquid.

[0046] In this embodiment, typical examples of liquids include air fresheners, deodorizers, household cleaners, mold removers, and hair styling products, but the liquid is not limited to these and various liquids that are sprayed in mist form can be used.

[0047] As shown in FIG. 6, the trigger-type liquid dispenser 100 comprises the dispenser body 10 and liquid dispense nozzle 40 described above, and an operating lever 30 (trigger) for operating the pump 20. By operating the trigger (operating lever 30 described below), the pump 20 is operated and the liquid is dispensed (sprayed) in a mist form. In the trigger-type liquid ejector 100 according to this embodiment, the configuration other than that related to the liquid ejection nozzle 40 can be that of various known trigger-type liquid ejectors, and therefore only a brief description of one example will be given below, and a detailed description will be omitted in this specification. Furthermore, the structure of the trigger-type liquid ejector 100 (including the pump 20) described below is one example, and other widely known structures may be applied as the structure of the trigger-type liquid ejector 100 within the scope of the present invention. Moreover, the trigger-type liquid ejector 100 according to this embodiment is preferably of a direct pressure type or a pressure accumulation type, and more preferably of a pressure accumulation type.

[0048] In this embodiment, the dispenser body 10 comprises a cap member 11 configured to be attachable to the nozzle 220 of the container body 210, a vertical tube 12 held by the cap member 11 and extending vertically, a horizontal tube 13 extending forward from the upper end of the vertical tube 12 and connected to the liquid discharge nozzle 40, a cylindrical holding portion 14 extending forward from the vertical tube 12, a pump 20 held within the holding portion 14, and a head cover 15 that covers the vertical tube 12, the horizontal tube 13, the holding portion 14, the pump 20, and part of the operating lever 30.

[0049] The vertical tube 12 has a cylindrical neck portion 12a at its lower end, which is inserted into an upper opening (not shown) of the cap member 11. The neck portion 12a has a smaller width (i.e., diameter) in a direction intersecting the swing direction of the operating lever 30 than the cap member 11. The vertical tube 12 also has a cylindrical intake 12b inside it. The lower end of the intake 12b is connected to a pipe 16 extending inside the container body 210, and the upper end is connected to the rear end of the horizontal tube 13. As a result, the pipe 16, the intake 12b, and the horizontal tube 13 form a liquid delivery path from the container body 210 to the liquid discharge nozzle 40. The intake 12b has a communication hole 12c formed therein that communicates with the pump chamber 24 described later, and an intake valve 12d and a discharge valve 12e are arranged on the upstream and downstream sides of the communication hole 12c, respectively. This allows the pump 20 to operate so that liquid can be sucked from the container body 210 into the pump chamber 24 and pumped (pressurized) from the pump chamber 24 to the liquid discharge nozzle 40.

[0050] The pump 20 includes a cylindrical cylinder 21 that is fitted and held in the holding portion 14, and a piston 22 that is accommodated inside the cylinder 21 and capable of reciprocating motion. The piston 22 has a smaller diameter than the cylinder 21, thereby forming a gap between its outer circumferential surface and the inner circumferential surface of the cylinder 21. An annular seal portion (not shown) that slidably and liquid-tightly contacts the inner circumferential surface of the cylinder 21 protrudes from the rear end of the piston 22, and the inside of the cylinder 21 is sealed by the seal portion, thereby forming a pump chamber 24 behind the seal portion. The front end of the piston 22 is engaged with an operating lever 30, and is urged by a coil spring 25 provided inside the piston 22 in a direction that pushes back the operating lever 30 (in the direction of expanding the pump chamber 24).

[0051] The operating lever 30 has its upper end pivotally mounted to the tip end of the horizontal cylinder 13 of the dispenser body 10 so as to be swingable, and is provided hanging down from the horizontal cylinder 13 downward (towards the container body 210) so as to face the vertical cylinder 12, the holding part 14, and the cap member 11. As described above, the upper end of the operating lever 30 is engaged with the front end of the piston 22, and is configured so that the piston 22 is reciprocated by the reciprocating movement of the operating lever 30. In the trigger-type liquid dispenser 100 according to this embodiment, the hanging operating lever 30 forms a space between the operating lever 30 and the cap member 11, the vertical cylinder 12, and the horizontal cylinder 13 of the dispenser body 10, and the piston 22 of the pump 20 is disposed in this space.

[0052] In the trigger-type liquid dispenser 100 according to this embodiment, the piston 22 is moved backward relative to the cylinder 21 by pulling the operating lever 30 toward the container body 210. This pressurizes the liquid in the pump chamber 24, and the pressurization pushes the discharge valve 12e up from the valve seat to an open state, allowing the liquid in the pump chamber 24 to be discharged to the outside from the discharge port 42 (FIG. 7) of the liquid discharge nozzle 40 via the supply path. Furthermore, when the operating lever 30 of the trigger-type liquid dispenser 100 is released after dispensing the liquid, the piston 22 and operating lever 30 are pushed back forward by the biasing force of the coil spring 25, which creates a negative pressure in the pump chamber 24, which in turn pushes the suction valve 12d up from its valve seat to an open state, allowing the liquid in the container body 210 to flow into the pump chamber 24. By repeatedly pulling and releasing the operating lever 30 in this way, the liquid in the container body 210 can be continuously dispensed from the liquid dispensing nozzle 40.

[0053] As shown in FIG. 7, the liquid ejection nozzle 40 includes an ejection section 45 that ejects liquid toward the outside (outside the trigger-type liquid ejector 100), and a nozzle flow path 81 that supplies liquid delivered from the ejector body 10 toward the ejection section 45. The ejection section 45 includes an ejection path 83 that throttles and ejects the liquid that flows in from the nozzle flow path 81, and an ejection port 42 that ejects the liquid that has passed through the ejection path 83 toward the outside of the trigger-type liquid ejector.

[0054] In this embodiment, the opening end of the discharge port 42 is formed into a curved surface with a gradually increasing diameter, as shown in Fig. 7. When the opening end of the discharge port 42 is formed into a curved surface in this way, there is an advantage that it is easier to enlarge the outline of the liquid adhesion pattern on the target surface 310. However, the present invention is not limited to this, and the open end of the discharge port 42 does not have to gradually increase in diameter, and does not have to be formed in a curved shape. In the following paragraphs, specific numerical values ​​for the opening diameter D1 of the discharge port 42 and the length dimension L1 of the discharge path 83 will be explained, but the following numerical values ​​are calculated on the assumption that the discharge path 83 is formed in a straight line from the base end to the tip end, and that the opening end of the discharge port 42 is not formed in a curved shape.

[0055] In this embodiment, the length L1 of the discharge path 83 is larger than the opening diameter D1 of the discharge port . Specifically, the ratio of the length dimension L1 of the discharge path 83 to the opening diameter D1 of the discharge port 42 (length dimension L1 of the discharge path 83 / opening diameter D1 of the discharge port 42) is 1.75 or more and 10.0 or less. More preferably, the ratio of the length dimension L1 of the discharge path 83 to the opening diameter D1 of the discharge port 42 is 2.0 or more and 4.0 or less. Here, the "opening diameter D1 of the discharge port 42" refers to the length in a direction perpendicular to the front-rear direction along the axis of the discharge port 42. Note that, when the length of the discharge port 42 varies in the direction perpendicular to the front-rear direction, such as when the discharge port 42 is elliptical, the minimum length is used as the reference. Furthermore, when the length in the direction perpendicular to the front-rear direction varies along the axial direction of the discharge port 42, the length at the tip of the discharge port 42 is used as the reference. Furthermore, in this embodiment, the "length dimension L1 of the discharge path 83" refers to the length in the front-rear direction from the base end to the tip of the discharge path 83. That is, in this embodiment, the length dimension L1 is the length along the front-rear direction from the base end to the tip end of a through-hole 65 that penetrates the plate-like portion 63 (described later) in the front-rear direction. With this configuration, the length dimension L1 of the discharge path 83 can be sufficiently ensured, and the straightness of the liquid discharged from the discharge port 42 can be improved, so that the liquid can be sprayed over a longer distance. On the other hand, the size of the opening diameter D1 of the discharge port 42 can be appropriately restricted, and a sufficient swirling flow can be imparted to the liquid passing through the discharge port 42, so that the liquid can be discharged in a good mist form.

[0056] From the viewpoint of ensuring a sufficient discharge amount, the opening diameter D1 of the discharge port 42 is 0.1 mm or more, preferably 0.15 mm or more, more preferably 0.2 mm or more, and even more preferably 0.25 mm or more. From the viewpoint of imparting a sufficient swirling flow to the liquid passing through the discharge port 42, the opening diameter D1 is 1 mm or less, preferably 0.9 mm or less, more preferably 0.5 mm or less, and even more preferably 0.35 mm or less. From the viewpoint of improving the linearity of the liquid, the length L1 of the discharge path 83 is 0.175 mm or more, preferably 0.2 mm or more, more preferably 0.4 mm or more, and even more preferably 0.5 mm or more. Also, from the viewpoint of imparting a sufficient swirling flow to the liquid passing through the discharge port 42, the length L1 is 3 mm or less, preferably 2 mm, more preferably 1 mm or less, and even more preferably 0.70 mm or less. In this embodiment, the opening diameter D1 of the discharge port 42 is 0.1 mm or more and 1 mm or less, and the length dimension L1 of the discharge path 83 is 0.175 mm or more and 3.00 mm or less. The opening diameter D1 of the discharge port 42 is preferably 0.15 mm or more and 0.9 mm or less, more preferably 0.2 mm or more and 0.5 mm or less, and even more preferably 0.25 mm or more and 0.35 mm or less, and the length dimension L1 of the discharge path 83 is preferably 0.2 mm or more and 2 mm or less, more preferably 0.4 mm or more and 1 mm or less, and even more preferably 0.5 mm or more and 0.7 mm or less. Even with this configuration, the length dimension L1 of the discharge path 83 can be sufficiently ensured, and the straightness of the liquid discharged from the discharge port 42 can be improved, so the liquid can be sprayed over a longer distance. On the other hand, the opening diameter D1 of the discharge port 42 can be appropriately reduced, so that a sufficient swirling flow can be imparted to the liquid passing through the discharge port 42, and the liquid can be discharged in a good mist form.

[0057] Here, the discharge part 45 has, for example, a swirling flow path 87 that swirls the liquid that has flowed in from the nozzle flow path 81 and supplies it to the discharge path 83. This allows the liquid to be given a sufficient swirling flow in the swirling flow path 87 to flow into the discharge path 83. Therefore, the liquid discharged from the discharge port 42 can be made into a sufficient atomized state (fine particles). Furthermore, between the nozzle flow path 81 and the swirl flow path 87, a flow velocity buffering region 85 is formed in which the liquid flowing in from the nozzle flow path 81 spreads into the internal space. The flow velocity buffering region 85 makes the flow velocity of the liquid flowing from the nozzle flow path 81 uniform, and also appropriately suppresses the swirling flow of the liquid flowing into the discharge path 83. This allows the liquid discharged from the discharge port 42 to be dispersed well, and the outer diameter D2 of the adhesion pattern of the liquid can be sufficiently secured. In this embodiment, the cross-sectional area of ​​the flow velocity buffering region 85 is larger than the cross-sectional area of ​​the swirl flow path 87. Note that the "cross-sectional area of ​​the swirl flow path 87" refers to the cross-sectional area in a direction perpendicular to the front-rear direction, and when multiple swirl flow paths 87 are provided, refers to the total cross-sectional area of ​​these multiple swirl flow paths 87, or when the cross-sectional area of ​​the swirl flow path 87 varies locally, refers to the cross-sectional area of ​​the largest portion. In the present invention, the structure of the liquid discharge nozzle 40 for discharging the liquid in a mist form is not limited to this example. For example, the liquid discharge nozzle 40 may not have a swirling flow path 87, but may instead be configured to discharge the liquid in a mist form by sending compressed air into the liquid discharge nozzle 40 and mixing it with the liquid. Furthermore, in the present invention, the flow velocity buffering region 85 does not have to be formed between the nozzle flow path 81 and the swirl flow path 87, and for example, the nozzle flow path 81 and the swirl flow path 87 may be directly connected to each other.

[0058] In this embodiment, the swirling flow path 87 includes, for example, a circumferential flow path 87a extending circularly along the circumferential direction of the liquid discharge nozzle 40, and a plurality of radial flow paths 87b extending radially from the circumferential flow path 87a toward the discharge path 83. A part of the liquid that has flowed into the flow velocity buffering region 85 flows into the discharge path 83 through the circulating path 87a and the plurality of radial paths 87b. With this configuration, a portion of the liquid that has spread within the flow rate buffering region 85 flows into the circulating flow path 87a, flows through the circulating flow path 87a, and is guided to each of the plurality of radial flow paths 87b. Therefore, a sufficient amount of liquid can flow into the swirling flow path 87.

[0059] Furthermore, the nozzle body 50 includes, for example, a first member 60 that forms the discharge portion 45, and a second member 70 to which the first member 60 is attached. As shown in FIG. 7, the first member 60 and the second member 70 each have opposing surfaces that face each other in the axial direction of the liquid discharge nozzle 40. The opposing surface of the first member 60 (hereinafter referred to as the first opposing surface 64) has grooves (in this embodiment, the first groove 66 and second groove 67 described below) that are recessed toward the side opposite the second member 70, and the grooves form a swirling flow path 87. In addition, a gap 76 is formed between the opposing surface of the first member 60 (first opposing surface 64) and the opposing surface of the second member 70 (hereinafter referred to as the second opposing surface 74), and the gap 76 constitutes a flow velocity buffering region 85, with the groove portion and the gap 76 directly connected to each other. With this configuration, the liquid whose swirling flow has been suppressed inside the flow velocity buffering region 85 and the liquid to which a swirling flow has been imparted by the swirling flow path 87 can be combined and flow into the discharge path 83. Therefore, the straightness of the liquid flowing into the discharge path 83 can be increased to an extent that the liquid can be sprayed over a longer distance while sufficiently maintaining the adhesion rate of the liquid adhering to the target surface 310 and the outer diameter of the adhesion pattern, and a swirling flow can be imparted to the liquid passing through the discharge port 42. It should be noted that the "axial direction of the liquid discharge nozzle 40" here refers to the axial direction of the discharge path 83 (more specifically, the through-hole 65 described later), which in this embodiment is the front-to-rear direction. In addition, in Figures 6 and 7, the axis AX1 of the liquid discharge nozzle 40 is shown by a two-dot chain line. Furthermore, when explaining the positional relationship between the components of the first member 60 and the second member 70, the axial direction of the discharge passage 83 (through hole 65) may be simply referred to as the axial direction, the radial direction of the discharge passage 83 (through hole 65) may be simply referred to as the radial direction, and the circumferential direction of the discharge passage 83 (through hole 65) may be simply referred to as the circumferential direction.

[0060] More specifically, in this embodiment, the liquid discharge nozzle 40 is directly connected to the swirling flow path 87 and the flow velocity buffering area 85, respectively, and further includes a confluence flow path 88 arranged between the swirling flow path 87 and the flow velocity buffering area 85 and the discharge path 83. The liquid whose swirling flow has been suppressed inside the flow velocity buffering region 85 and the liquid to which a swirling flow has been imparted by the swirling flow path 87 merge in the merging flow path 88 and then flow into the discharge path 83. With this configuration, it becomes easy to impart a sufficient swirling flow to the liquid passing through the discharge port 42 while increasing the linearity of the liquid flowing into the discharge path 83 . More specifically, a portion of the liquid that has flowed into the merging flow path 88 swirls in one circumferential direction (the direction of arrow A shown in FIG. 11) before flowing into the discharge path 83. The other portion of the liquid that has flowed into the merging flow path 88 flows into the discharge path 83 while moving straight from the base end side toward the tip end side.

[0061] In this embodiment, the ratio of the volume of the flow velocity buffering region 85 to the volume of the discharge path 83 (volume of the flow velocity buffering region 85 / volume of the discharge path 83) is preferably 0.05 or more and 500 or less. With this configuration, a swirling flow can be imparted to the liquid passing through the outlet 42 to the extent that the liquid can be sprayed over a longer distance while adequately maintaining the adhesion rate of the liquid adhering to the target surface 310 and the outer diameter of the adhesion pattern.

[0062] Furthermore, it is preferable that the ratio of the volume of the flow velocity buffering region 85 to the volume of the swirl flow path 87 (volume of the flow velocity buffering region 85 / volume of the swirl flow path 87) is 0.1 or more and 100 or less. With this configuration, the discharge path 83 can be configured to spray the liquid over a longer distance while maintaining a sufficient adhesion rate of the liquid adhering to the target surface 310 and the outer diameter of the adhesion pattern. This can suppress the swirling flow of the liquid flowing into the

[0063] In addition, in the axial direction of the liquid discharge nozzle 40, the separation distance L2 (Figure 7) between the first opposing surface 64 of the first member 60 and the second opposing surface 74 of the second member 70, i.e., the length dimension of the flow velocity buffering region 85, is preferably 0.03 mm or more and 0.15 mm or less, and more preferably 0.06 mm or more and 0.12 mm or less. With this configuration, the swirling flow of the liquid can be suppressed in the flow rate buffering region 85 to an extent that the liquid can be sprayed over a longer distance while sufficiently maintaining the adhesion rate of the liquid adhering to the target surface and the outer diameter of the adhesion pattern.

[0064] 6 to 8, the liquid discharge nozzle 40 comprises a nozzle body 50 provided at the tip of the horizontal tube 13 of the discharger body 10, and a nozzle cover 110 that covers the nozzle body 50. The nozzle body 50 may be configured to be detachable from the discharger body 10, or may be configured to be non-detachable.

[0065] As shown in FIG. 6 or 7, a second member 70 is attached to the tip of the horizontal tube 13 of the dispenser body 10, and a first member 60 is assembled to the tip of the second member 70. As shown in FIGS. 7 and 10 to 12, the first member 60 includes a cylindrical portion 61 formed in a cylindrical shape, and a plate-like portion 63 formed at the tip of the cylindrical portion 61. The axis of the cylindrical portion 61 extends in the front-rear direction. The inner diameter of the base end of the cylindrical portion 61 increases in two stages toward the base end. The outer diameter of the base end of the cylindrical portion 61 gradually decreases toward the base end. The plate-shaped portion 63 is formed in a disk shape, and its plate surface is arranged facing the front-rear direction. Of the two plate surfaces of the plate-shaped portion 63, the rear surface constitutes the aforementioned opposing surface (first opposing surface 64). The plate-shaped portion 63 is formed with a through-hole 65, which is a round hole that penetrates the plate-shaped portion 63 in the thickness direction (front-rear). The plate-shaped portion 63 closes the tip side of the cylindrical portion 61 except for the location where the through-hole 65 is formed. Here, the base end of the through-hole 65 forms a reduced diameter section 68 that tapers in a mortar-like shape toward the tip. More specifically, the reduced diameter section 68 includes a first section 68a adjacent to the flow velocity buffering region 85 and a second section 68b located on the tip side of the first section 68a. The inner diameter of the first section 68a is constant regardless of its position in the axial direction. The inner diameter of the second section 68b tapers gradually toward the tip. The inner diameter of the intermediate portion (middle in the axial direction) of through-hole 65 is constant regardless of the position in the axial direction. The inner diameter of the tip portion of through-hole 65 gradually increases toward the tip side. 10, the inner diameter of the tip of second portion 68b is larger than the inner diameter of the intermediate portion of through hole 65, and a step surface 68c is formed at the boundary between second portion 68b and the intermediate portion of through hole 65. When first member 60 is viewed from the base end side, step surface 68c is formed in an annular shape, and its plate surface faces the base end side. The outer peripheral edge of step surface 68c is connected to the tip of second portion 68b, and the inner peripheral edge of step surface 68c is connected to the base end of the intermediate portion of through hole 65. The opening on the tip side of the through-hole 65 forms the discharge port 42 and has a larger diameter than the opening on the base side of the through-hole 65 .

[0066] As described above, a groove recessed toward the side opposite to the second member 70 is formed in the first opposing surface 64 of the first member 60. More specifically, in the case of this embodiment, the rear surface of the plate-shaped portion 63 forms the first opposing surface 64, and the rear surface of the plate-shaped portion 63 is formed with, for example, a first groove 66 and a plurality (e.g., three) second grooves 67, each recessed toward the tip side, as grooves. The rear surface (first opposing surface 64) of the plate-shaped portion 63 is formed flat except for the areas where the first groove 66, the plurality of second grooves 67, and the through-hole 65 are formed, and the plate surface is arranged facing the axial direction. The first groove portion 66 is formed in a 360-degree circumferential shape along the outer periphery of the plate-shaped portion 63. Each of the plurality of second groove portions 67 is formed from the inner periphery of the first groove portion 66 to the outer periphery of the base end of the through hole 65. The second grooves 67 are formed to have, for example, the same width as one another and the same depth as one another. When the first member 60 is viewed from the base end side, the through-hole 65 is disposed inside (inside in the radial direction) the first groove portion 66 and concentrically with the first groove portion 66 . Furthermore, when the first member 60 is viewed from the base end side, the second groove portions 67 are arranged radially with the axis of the through hole 65 as the center C1. More specifically, the outer (radially outer) end of each of the second groove portions 67 communicates with the first groove portion 66, and the inner (radially inner) end of each of the second groove portions 67 communicates with the reduced diameter portion 68 of the through hole 65. The plurality of second groove portions 67 are arranged at equal angular intervals around the center C1.

[0067] 6 and 7, the second member 70 has a cylindrical portion 71 that is formed in a cylindrical shape and extends in the front-rear direction. The inner cavity of the cylindrical portion 71 is indirectly or directly connected to the inner cavity of the horizontal tube 13 of the dispenser body 10. In this embodiment, the axis of the cylindrical portion 71 is arranged coaxially with the axis of the horizontal tube 13. However, in the present invention, the axis of the cylindrical portion 71 and the axis of the horizontal tube 13 may be arranged at positions offset from each other. The tip of the cylindrical portion 71 constitutes a holding portion 72 that holds the first member 60. The second member 70 further includes an insertion portion 73 that is inserted into the inner cavity of the first member 60 . The insertion portion 73 is formed in a generally cylindrical shape extending in the front-rear direction. The insertion portion 73 is disposed in the inner cavity of the tip portion (holding portion 72) of the cylindrical portion 71, and a portion of the insertion portion 73 is connected to the inner circumferential surface of the cylindrical portion 71. In this embodiment, in the axial direction of the liquid discharge nozzle 40, the front surface of the insertion portion 73 is parallel to and opposite the rear surface (first opposing surface 64) of the plate-shaped portion 63 of the first member 60, and forms the second opposing surface 74 of the second member 70. As shown in FIGS. 7 to 9, the inserting portion 73 is formed with a plurality of (for example, three) notched portions 75 penetrating the inserting portion 73 from the front surface to the rear surface. As shown in FIG. 7, the cross-sectional area of ​​the internal space of each of the plurality of cutout portions 75 is relatively large at the tip of the cutout portion 75 and relatively small in the portion closer to the base end than the tip, and a step 75a is formed on the outer peripheral surface of the cutout portion 75. The plurality of notch portions 75 are arranged around the axis AX1 of the liquid discharge nozzle 40 at equal angular intervals. The plurality of cutout portions 75 are formed, for example, to have the same width and depth as one another. The front surface (second opposing surface 74) and rear surface of the insertion portion 73 are each formed flat except for the areas where the multiple second opposing surfaces 74 are formed, and the plate surfaces are arranged facing the axial direction.

[0068] As shown in Figure 7, the cylindrical portion 61 of the first member 60 is fitted into the inner cavity of the holding portion 72 of the second member 70, and the insertion portion 73 of the second member 70 is fitted into the inner cavity of the cylindrical portion 61 of the first member 60, thereby assembling the first member 60 and the second member 70 to each other. Furthermore, the cylindrical portion 61, the plate-shaped portion 63 and the through hole 65 of the first member 60 and the tubular portion 71 and the insertion portion 73 of the second member 70 are arranged coaxially with respect to a common axis (axis AX1 of the liquid discharge nozzle 40). The first member 60 and the cylindrical portion 71 of the second member 70 are brought closer to each other in the direction of the axis AX1, whereby the first member 60 and the second member 70 are assembled to each other.

[0069] 7, in the axial direction of the liquid discharge nozzle 40, the rear surface (first opposing surface 64) of the plate-shaped portion 63 of the first member 60 and the front surface (second opposing surface 74) of the insertion portion 73 of the second member 70 are arranged parallel to and facing each other, forming a gap 76. The gap 76 between the rear surface (first opposing surface 64) of the plate-shaped portion 63 of the first member 60 and the front surface (second opposing surface 74) of the insertion portion 73 of the second member 70 constitutes a flow velocity buffering region 85. Note that the internal spaces of the grooves (first groove portion 66 and second groove portion 67) formed in the rear surface (first opposing surface 64) of the plate-shaped portion 63 are not included in the flow velocity buffering region 85. That is, the gap 76 (flow velocity buffering region 85) referred to here is a gap between a groove-free region on the rear surface (first opposing surface 64) of the plate-shaped portion 63 and the front surface (second opposing surface 74) of the insertion portion 73 of the second member 70. The flow velocity buffering region 85 is a flat, disk-shaped space defined by the rear surface (first opposing surface 64) of the plate-shaped portion 63, the inner circumferential surface of the cylindrical portion 61, and the front surface (second opposing surface 74) of the insertion portion 73. However, the present invention is not limited to this example, and the flow velocity buffering region 85 may be a cylindrical space or a prismatic space. In the cylindrical portion 71 of the second member 70, the internal space on the base end side of the front surface (second opposing surface 74) of the insertion portion 73 of the second member 70 constitutes the nozzle flow path 81 described above, and is connected to the delivery path of the dispenser main body 10. More specifically, the liquid delivered by the pump 20 flows into the cylindrical portion 71 of the second member 70 via the horizontal tube 13, and after passing through the internal spaces of the plurality of cutout portions 75 and being narrowed, flows into the flow rate buffering region 85 while spreading. In the through hole 65 of the first member 60, the internal space of the portion (tip portion and intermediate portion) on the tip side of the reduced diameter portion 68 forms the discharge passage 83, and the tip side opening of the through hole 65 forms the discharge port 42. In addition, the internal space of the reduced diameter portion 68 of the through hole 65 forms the converging passage 88. The tip of the converging passage 88 directly communicates with the discharge passage 83, and the base end of the converging passage 88 directly communicates with the swirling passage 87 and the flow velocity buffering region 85, respectively. In the first opposing surface 64 of the first member 60, the internal space of the first groove portion 66 forms a circulating flow path 87a, and the internal spaces of the plurality of second groove portions 67 each form a radial flow path 87b. The base end of the circulating flow path 87 a and the base ends of the plurality of radial flow paths 87 b are directly connected to the flow velocity buffering region 85 . Furthermore, the inner (radially inner) ends of each of the plurality of radial flow paths 87b are directly connected to the junction flow path 88. In this embodiment, of the liquid sent by the pump 20 to the nozzle flow path 81 through the supply path of the dispenser body 10, a portion of the liquid is supplied to the discharge path 83 via the flow rate buffering area 85, the swirling flow path 87 and the confluence flow path 88 in this order, and the other portion of the liquid flows directly from the flow rate buffering area 85 into the confluence flow path 88 and is supplied to the discharge path 83. With this configuration, the liquid whose swirling flow has been suppressed inside the flow rate buffering region and the liquid to which a swirling flow has been imparted by the swirling flow path 87 merge in the junction flow path 88, and the merged liquid passes through the junction flow path 88 and flows into the discharge path 83 while being narrowed. This allows the liquid to be sprayed over a longer distance while adequately maintaining the adhesion rate and outer diameter of the adhesion pattern of the liquid sprayed from the discharge port 42 onto the target surface 310.

[0070] In this embodiment, the width of each of the plurality of radial flow paths 87b (the dimension in a direction perpendicular to the direction in which the radial flow paths 87b extend) gradually narrows toward the discharge path 83. With this configuration, a sufficient swirling flow can be imparted to the liquid flowing through the plurality of radial flow paths 87b. More specifically, the width dimension of each of the plurality of second groove portions 67 gradually narrows toward the through-hole 65.

[0071] As described above, step surface 68c is formed at the boundary between second portion 68b of reduced diameter portion 68 and the intermediate portion of through-hole 65. That is, step surface 68c is formed at the boundary between junction flow path 88 and discharge path 83. With this configuration, a portion of the liquid that flows directly from the flow velocity buffering region 85 toward the merging flow path 88 can collide with the step surface 68c and then flow along the step surface 68c into the discharge path 83. Similarly, a portion of the liquid that swirls in a circular manner along the second portion 68b of the reduced diameter section 68 can collide with the step surface 68c and then flow along the step surface 68c into the discharge path 83. Therefore, the swirling flow of the liquid flowing into the discharge path 83 can be appropriately suppressed.

[0072] Also, as shown in Figure 11, when the first member 60 is viewed from the base end side, each of the multiple second groove portions 67 (radial flow paths 87b) extends linearly inward from the outer periphery of the first opposing surface 64 and in a direction offset radially outward from the center C1 of the cylindrical portion 61. More specifically, each of the multiple second groove portions 67 has a pair of inner side surfaces 67a, 67b that face each other parallel to one another in a direction that includes a circumferential component. Of the pair of inner side surfaces 67a, 67b, the leading edge of the inner side surface 67a on the side of the swirling direction of the liquid in the merging channel 88 (arrow A shown in FIG. 11) is in contact with the base end edge of the first portion 68a of the reduced diameter portion 68, as shown in FIGS. 11 and 12. Furthermore, when the first member 60 is viewed from the base end side, an imaginary straight line 410 that passes through the inner side surface 67b on the side opposite the swirling direction intersects with each of the inner peripheral edge of the second portion 68b of the reduced diameter portion 68 and the step surface 68c, as shown in FIG. With this configuration, liquid flowing linearly along the inner surface 67a on the swirling direction side can smoothly flow from the second groove portion 67 into the first portion 68a of the reduced diameter portion 68, and can flow toward the discharge channel 83 while swirling sufficiently along the inner circumferential surface of the first portion 68a. On the other hand, liquid flowing linearly along the inner surface 67b on the opposite side to the swirling direction can be quickly guided toward the discharge channel 83 by the second portion 68b of the reduced diameter portion 68, which gradually reduces in diameter toward the tip side, and can collide with the stepped surface 68c. This makes it possible to adequately ensure the flow rate of the liquid that flows into the junction channel 88 along the inner surface 67a on the swirling direction side, while appropriately suppressing the flow rate of the liquid that flows into the junction channel 88 along the inner surface 67b on the opposite side to the swirling direction. This prevents the swirling of the liquid that first flows into the merging channel 88 along the inner surface 67a on the swirling direction side from being hindered by the flow of the liquid that later flows into the merging channel 88 along the inner surface 67b on the opposite side to the swirling direction. In other words, a sufficient swirling flow can be imparted to the liquid that flows into the merging channel 88 along the inner surface 67a on the swirling direction side.

[0073] Furthermore, in the axial direction of the nozzle body, the length dimension of the merging flow path 88 is smaller than the length dimension of the discharge path 83. The maximum value of the inner diameter of the merging flow path 88 is larger than the maximum value of the inner diameter of the discharge path 83. Furthermore, in a cross section taken along the axis AX1 of the liquid discharge nozzle 40, the inclination angle of the inner circumferential surface of the second portion 68b of the reduced diameter section 68 with respect to the axis AX1 of the liquid discharge nozzle 40 is, for example, not less than 30 degrees and not more than 60 degrees. With this configuration, the liquid that has flowed into the junction flow path 88 can be swirled in the circumferential direction well, and the liquid can be sufficiently narrowed before flowing into the discharge path 83.

[0074] Furthermore, as described above, the inner diameter of the tip of the through-hole 65 gradually increases toward the tip, which allows the liquid narrowed by the discharge path 83 to be dispersed more effectively when it is discharged from the discharge port 42.

[0075] [Variations] The present invention is not limited to the above-described embodiment, and includes various modifications and improvements as long as the object of the present invention is achieved.

[0076] For example, in the present invention, the number of radiation flow paths 87b provided in the trigger-type liquid ejector 100 and the width dimension of the radiation flow paths 87b are not limited to the above-mentioned examples, and can be set appropriately depending on the desired spray distance, liquid adhesion rate and adhesion pattern, type of liquid, etc.

[0077] Furthermore, in the present invention, an example has been described in which the flow velocity buffering region 85 is formed by a gap between opposing surfaces of separate members (first member 60 and second member 70), but the present invention is not limited to this example, and the flow velocity buffering region 85 may be formed, for example, by a gap between a pair of opposing surfaces of a single member.

[0078] Furthermore, the various components of the trigger-type liquid ejector 100 do not need to be independent entities, and it is acceptable for multiple components to be formed as a single member, for one component to be formed from multiple members, for one component to be part of another component, or for part of one component to overlap with part of another component, etc.

[0079] Furthermore, in the above-described first and second embodiments, the outlets (311a and 42) of the liquid discharge nozzles (240' and 40) are described as being circular or disk-shaped, but this is not limited thereto and they may be formed in various shapes including an elliptical shape. Modified examples of the ejection port will be described below with reference to FIGS.

[0080] As shown in Figures 17 and 18, the liquid discharge nozzle 40'' according to the modified example has a discharge section 45'' that discharges liquid outward, similar to the liquid discharge nozzle 40 according to the second embodiment described above, and the discharge section 45'' has a discharge port 42''. Furthermore, as shown in Figures 17 and 18, the liquid discharge nozzle 40'' according to the modified example has a nozzle main body 50'' that is detachable from the tip of a horizontal tube (not shown) of a dispenser main body (not shown).

[0081] As shown in FIG. 18, the liquid discharge nozzle 40'' according to the modified example has a flow velocity buffering region 85''. On the other hand, the discharge port 42'' included in the discharge section 45'' of the liquid discharge nozzle 40'' according to the modified example is formed in an elliptical shape having a major axis and a minor axis when viewed from the front (see FIG. 19) or from the rear (see FIG. 18).

[0082] Specifically, as shown in FIG. 17, a liquid discharge nozzle 40'' according to a modified example has a disk-shaped discharge portion 45'' formed on the radially inner side of a nozzle body 50'', and a linear cutout that extends radially and has a V-shaped cross section is formed in the discharge portion 45''. Furthermore, a discharge port 42'' is formed in the discharge portion 45'' along the vertical direction within the cutout.

[0083] In a liquid discharge nozzle 40'' according to a modified example, the discharge port 42'' is formed in an elliptical shape that is elongated in the vertical direction when viewed from the front or rear as shown in FIG. 19. Note that the discharge port 42'' according to the modified example is formed in an arc-shaped cross section with the central portion curved forward (in the discharge direction), as shown in FIG. 20. In this way, because the central portion of the discharge port 42'' is curved in the discharge direction, the liquid discharged from the discharge port 42'' can be dispersed more effectively compared to when the discharge port 42'' is formed in a linear cross section.

[0084] It is clear from the claims that the above modifications are included within the scope of the present invention.

[0085] In relation to the above-described embodiments, the present invention further discloses the following trigger-type liquid dispenser and trigger-type spray container.

[0086] <1> A trigger-type liquid dispenser comprising a dispenser body having a built-in pump capable of sucking and pumping liquid in a container body, an operating lever for operating the pump, and a liquid dispenser nozzle for discharging liquid by operating the pump, The liquid discharge nozzle is a discharge port capable of discharging a liquid; a nozzle flow path that causes the liquid pressure-fed from the pump to flow toward the discharge port; a space formed between the ejection port and the nozzle flow path, the space communicating with the ejection port and the nozzle flow path; and The cross-sectional area of ​​the space is larger than the cross-sectional area of ​​the nozzle flow path. Trigger-type liquid dispenser.

[0087] <2> The cross-sectional area of ​​the space is 5 times or more and 2000 times or less than the cross-sectional area of ​​the discharge port. The aforementioned <1> The trigger-type liquid dispenser according to claim 1.

[0088] <3> The volume of the space is 5 times or more and 3000 times or less the volume of the opening of the discharge port. The aforementioned <1> or <2> The trigger-type liquid dispenser according to claim 1.

[0089] <4> The nozzle flow path is provided in plurality. The aforementioned <1> ~ <3> 10. The trigger-type liquid dispenser according to claim 1,

[0090] <5> The ejection port and the nozzle flow path are not arranged on the same line. The aforementioned <1> ~ <4> 10. The trigger-type liquid dispenser according to claim 1,

[0091] <6> The opening diameter of the discharge port is 0.1 mm or more and 1 mm or less. The aforementioned <1> ~ <5> 10. The trigger-type liquid dispenser according to claim 1,

[0092] <7> The discharge port has an elliptical shape when viewed from the front or rear. The aforementioned <1> ~ <6> 10. The trigger-type liquid dispenser according to claim 1,

[0093] <8> The liquid discharge nozzle is an outer body having a circular front wall and a peripheral wall extending rearward from the entire outer peripheral edge of the front wall; an inner body provided inside and rearward of the outer body, the inner body having a circular front surface facing the front wall and a circular rear surface facing the front surface; Further provided with The outlet is provided in the center of the front wall, the nozzle flow path is formed to penetrate from the front surface to the rear surface, The space is a cylindrical space defined by the inner surface of the front wall, the inner circumferential surface of the peripheral wall, and the front surface. The aforementioned <1> ~ <7> 10. The trigger-type liquid dispenser according to claim 1,

[0094] <9> The liquid discharge nozzle is A discharge path that throttles and discharges the liquid that has flowed in from the nozzle flow path Further comprising: The ratio of the length of the discharge path to the opening diameter of the discharge port (length of the discharge path / opening diameter of the discharge port) is 1.75 or more and 10.0 or less. The aforementioned <1> ~ <8> 10. The trigger-type liquid dispenser according to claim 1,

[0095] <10> The liquid discharge nozzle is A discharge path that throttles and discharges the liquid that has flowed in from the nozzle flow path Further comprising: The length of the discharge path is greater than the opening diameter of the discharge port. The aforementioned <1> ~ <8> 10. The trigger-type liquid dispenser according to claim 1,

[0096] <11> The length of the discharge passage is 0.175 mm or more and 3 mm or less. The aforementioned <9> or <10> The trigger-type liquid dispenser according to claim 1.

[0097] <12> the discharge port has a swirling flow path that swirls the liquid that has flowed in from the nozzle flow path and supplies it to the discharge path, The space is provided between the nozzle flow path and the swirl flow path. The aforementioned <9> ~ <11> 10. The trigger-type liquid dispenser according to claim 1,

[0098] <13> A first member; a second member to which the first member is assembled; Equipped with the first member and the second member each have opposing surfaces that face each other in the axial direction of the liquid ejection nozzle, a groove portion recessed toward a side opposite to the second member is formed on the opposing surface of the first member, and the groove portion constitutes the swirling flow path, a gap is formed between the opposing surface of the first member and the opposing surface of the second member, and the gap constitutes the space; The groove and the gap are directly connected to each other. The aforementioned <12> The trigger-type liquid dispenser according to claim 1.

[0099] <14> The cross-sectional area of ​​the space is larger than the cross-sectional area of ​​the swirl flow path. The aforementioned <12> or <13> The trigger-type liquid dispenser according to claim 1.

[0100] <15> The ratio of the volume of the space to the volume of the swirl flow path (volume of the space / volume of the swirl flow path) is 0.1 or more and 100 or less. The aforementioned <12> ~ <14> 10. The trigger-type liquid dispenser according to claim 1,

[0101] <16> The swirling flow path is a circumferential flow path extending circumferentially along the circumferential direction of the liquid discharge nozzle; a plurality of radial flow paths extending radially from the circulating flow path toward the discharge path, A portion of the liquid that has flowed into the space passes through the circulating flow path and the plurality of radial flow paths and flows into the discharge path. The aforementioned <12> ~ <15> The trigger-type liquid dispenser according to claim 1.

[0102] <17> The width of each of the plurality of radiation flow paths gradually narrows toward the discharge path. The aforementioned <16> The trigger-type liquid dispenser according to claim 1.

[0103] <18> The adhesion rate of the liquid adhering to a target surface placed at a spray distance of 80 cm from the liquid discharge nozzle is 25% or more and 100% or less, and the outer diameter of the adhesion pattern of the liquid on the target surface is 90 mm or more and 210 mm or less. The aforementioned <1> ~ <17> 10. The trigger-type liquid dispenser according to claim 1,

[0104] <19> The adhesion rate of the liquid adhering to the target surface placed at a spray distance of 40 cm from the liquid discharge nozzle is 65% or more and 100% or less, and the outer diameter of the adhesion pattern on the target surface is 75 mm or more and 180 mm or less. The aforementioned <1> ~ <18> The trigger-type liquid dispenser according to claim 1.

[0105] <20> The container body is configured to be capable of containing a liquid having a viscosity of 1 mPa·s or more and 500 mPa·s or less. The aforementioned <1> ~ <19> 10. The trigger-type liquid dispenser according to claim 1,

[0106] <21> a container body capable of containing a liquid; The aforementioned <1> ~ <21> The trigger-type liquid dispenser according to any one of claims 1 to 4, A trigger-type spray container comprising:

[0107] <22> The container body includes a pump having a cylinder and a piston. The aforementioned <21> The trigger-type spray container described in

[0108] <23> The container body includes an attachment cap configured to be attachable to a mouth of the container body; a vertical tube extending upward from the mounting cap; a holding portion extending forward from an upper end portion of the vertical tube; have The aforementioned <21> or <22> The trigger-type spray container described in

[0109] <24> The container body has a trigger, The trigger is provided by extending downward from a horizontal tube that extends in the width direction from the mounting cap. The aforementioned <23> The trigger-type spray container described in

[0110] <25> Composed of pressure storage type The aforementioned <21> ~ <24> 1. A trigger-type spray container according to any one of claims 1 to 9. [Example]

[0111] The present invention will be specifically described below based on examples, but the object of the present invention is not limited to these examples.

[0112] [Example 1 and Comparative Example 1] The inventors conducted a comparative experiment on the straightness of the liquid ejected from the ejection port 311a' using a trigger-type liquid ejector (Example 1) having the same configuration as the trigger-type liquid ejector 200' according to the present embodiment, and a trigger-type liquid ejector (Comparative Example 1) having the same configuration as the trigger-type liquid ejector 200' according to the present embodiment except that it does not have the flow velocity buffering region 330' according to the present embodiment but has the second groove portion and spin grooves described in Patent Document 1. Both the trigger-type liquid ejectors according to Example 1 and Comparative Example 1 were used in a state attached to a container body having the same configuration as the container body 100' according to the present embodiment, and the liquid used was a clothing deodorizer (manufactured by P&G: product name Febreze) with a viscosity of 3.5 mPa s.

[0113] In the trigger-type liquid ejectors according to Example 1 and Comparative Example 1, the minimum diameter of the ejection port 311a' was 0.8 mm, the length of the ejection port 311a' along the liquid ejection direction at the minimum diameter (the length of the ejection path) was 0.25 mm, and the opening volume of the ejection port 311a' was 0.1256 mm3, calculated as (0.8 / 2)2 × 3.14 (pi) × 0.25 mm. Furthermore, in the trigger-type liquid ejectors according to the examples, the spatial volume of the flow velocity buffering region 330' was 704.375 times the opening volume of the ejection port 311a'. The diameter of the flow velocity buffering region 330' was 3.5 mm, the length of the flow velocity buffering region 330' along the liquid ejection direction was 9.2 mm, and the spatial volume of the flow velocity buffering region 330' was 88.4695 mm3, calculated as (3.5 / 2)2 × 3.14 (pi) × 9.2.

[0114] In a comparative experiment, the liquid immediately after ejection was photographed with a high-speed camera (manufactured by Vision Research, product name: Phantom LC310) and the straightness of the liquid ejected from the ejection port 311a' was compared. As shown in FIG. 4, when liquid was ejected using the trigger-type liquid ejector of Example 1, the ejected liquid flowed in a straight line without any fluctuations in strength. On the other hand, as shown in FIG. 5, when liquid was ejected using the trigger-type liquid ejector of Comparative Example 1, the ejected liquid flow varied in strength, causing scattering.

[0115] From the above comparative experiment, it can be seen that the liquid ejected from the trigger-type liquid ejector according to Example 1 has a higher degree of straightness. Therefore, by providing the trigger-type liquid ejector with the flow velocity buffering region 330', it is possible to eject liquid with a high degree of straightness, and as a result, it is possible to increase the ejection distance of the liquid.

[0116] [Examples 2 to 7 and Comparative Examples 2 to 4] Examples 2 to 7 and Comparative Examples 2 to 4 will be explained below with reference to FIGS. 14 to 16B and Tables 1 and 2.

[0117] In Examples 2 to 6 and Comparative Examples 2 and 3, evaluation tests were conducted to evaluate the adhesion rate and adhesion pattern of the liquid sprayed from the trigger-type spray container. In the evaluation tests, the trigger-type spray container was positioned so that the axis of the liquid discharge nozzle was perpendicular to the target surfaces, and the liquid was sprayed onto a first target surface (e.g., a water-absorbent paper sheet) and a second target surface (e.g., a water-discoloring paper sheet). The mass of the liquid discharged from the trigger-type spray container, the mass of the liquid adhered to the first target surface, and the ratio (adhesion rate) between them were measured. The "mass of the discharged liquid" is the value obtained by multiplying the amount of liquid discharged in one discharge operation by the specific gravity of the liquid, and the "mass of the liquid adhered to the first target surface" is the difference between the mass of the second target surface before the liquid adhered and the mass of the second target surface after the liquid adhered. Furthermore, within 5 seconds of the moment the liquid adhered to the second target surface, an image of the adhesion pattern formed on the second target surface was captured, and the maximum outer diameter of the adhesion pattern on the captured image was measured. In Example 7 and Comparative Example 4, in order to measure the maximum spray distance of the liquid from a trigger-type spray container, the liquid was sprayed into the air using a trigger-type spray container, and the spray pattern of the sprayed liquid was photographed. In Examples 2 to 7 and Comparative Examples 2 to 4, the trigger-type spray containers used were of the pressure-accumulator type. Furthermore, in Examples 2 to 4 and 7, trigger-type spray containers were used in which the ratio of the length of the discharge path to the opening diameter of the discharge port (length of the discharge path / opening diameter of the discharge port) was 2.0. In Examples 2 to 4 and 7, the length of the discharge path was 0.6 mm, the opening diameter of the discharge port was 0.3 mm, the length of the flow rate buffering region was 0.1 mm, and the volume of the flow rate buffering region was 0.962 mm3. In Example 5, a trigger-type spray container was used in which the ratio of the length of the discharge path to the opening diameter of the discharge port (same as above) was 2.5. In Example 5, the length of the discharge path was 0.75 mm, the opening diameter of the discharge port was 0.3 mm, the length of the flow rate buffering region was 0.1 mm, and the volume of the flow rate buffering region was 0.962 mm. In Example 6, a trigger-type spray container was used in which the ratio of the length of the discharge path to the opening diameter of the discharge port (same as above) was 3.0. In Example 6, the length of the discharge path was 0.9 mm, the opening diameter of the discharge port was 0.3 mm, the length of the flow rate buffering region was 0.1 mm, and the volume of the flow rate buffering region was 0.962 mm. In Comparative Examples 2 to 4, trigger-type spray containers were used that were configured similarly to the trigger-type spray containers used in Examples 2 to 7, except that the ratio of the length of the discharge path to the opening diameter of the discharge port (length of the discharge path / opening diameter of the discharge port) was 1.5 and that they did not have a flow rate buffering region (length of the flow rate buffering region was 0 mm).In Comparative Examples 2 to 4, the length of the discharge path was 0.6 mm and the opening diameter of the discharge port was 0.4 mm. In Example 2 and Comparative Example 2, two target surfaces were prepared as the first target surface: one set at a spray distance of 40 cm from the liquid discharge nozzle, and the other set at a spray distance of 80 cm, and the above-mentioned evaluation test was performed on both of them. Similarly, two target surfaces were prepared as the second target surface: one set at a spray distance of 40 cm from the liquid discharge nozzle, and the other set at a spray distance of 80 cm, and the above-mentioned evaluation test was performed on both of them. In Examples 3 to 6 and Comparative Example 3, the following target surfaces were prepared as first target surfaces: a target surface placed at a spray distance of 20 cm from the liquid discharge nozzle, a target surface placed at the spray distance of 40 cm, a target surface placed at the spray distance of 60 cm, a target surface placed at the spray distance of 70 cm, a target surface placed at the spray distance of 80 cm, a target surface placed at the spray distance of 90 cm, and a target surface placed at the spray distance of 100 cm. Similarly, the following target surfaces were prepared as second target surfaces: a target surface placed at a spray distance of 20 cm from the liquid discharge nozzle, a target surface placed at the spray distance of 40 cm, a target surface placed at the spray distance of 60 cm, a target surface placed at the spray distance of 70 cm, a target surface placed at the spray distance of 80 cm, a target surface placed at the spray distance of 90 cm, and a target surface placed at the spray distance of 100 cm. The above-mentioned evaluation test was performed on each target surface.

[0118] First, the results of Example 2 and Comparative Example 2 are shown in Table 1 below.

[0119] [Table 1]

[0120] As shown in Table 1, on a target surface placed at a spray distance of 40 cm, Example 2 showed a higher liquid adhesion rate and a larger liquid adhesion pattern diameter than Comparative Example 2. Even on a target surface placed at a spray distance of 80 cm, it was found that Example 2 had a higher liquid adhesion rate than Comparative Example 2. Furthermore, in this case, the diameter of the liquid adhesion pattern was 138 mm in Example 2, whereas in Comparative Example 2, sufficient liquid did not adhere to the target surface to form an adhesion pattern, so the outer diameter of the adhesion pattern could not be measured.

[0121] Next, the results of Example 3 and Comparative Example 3 are shown in the graph of Figure 14. In Figure 14, the vertical axis on the left side represents the outer diameter (mm) of the adhesion pattern, and the horizontal axis represents the spray distance (cm) from the liquid discharge nozzle. More specifically, the graph in Figure 14 shows the change in the maximum outer diameter of the adhesion pattern for each spray distance, based on the vertical (gravity direction) height position of the discharge port relative to the mounting surface of the trigger-type spray container (for example, a position 200 mm above the mounting surface). Also, in Figure 14, the vertical axis on the right side plots the non-adhesion rate of liquid (%), and the horizontal axis plots the spray distance (cm) from the liquid discharge nozzle. As mentioned above, the "liquid adhesion rate" is the mass of liquid adhered to the target surface / the mass of liquid discharged from the liquid discharge nozzle × 100, and the "non-adhesion rate of liquid" here can be obtained from the adhesion rate calculated using the above formula. 14, in Example 3, the adhesion rate to the target surface placed at a spray distance of 40 cm was about 100% and the outer diameter of the adhesion pattern was about 175 mm, whereas in Comparative Example 2, the adhesion rate to the target surface placed at a spray distance of 40 cm was about 70% and the outer diameter of the adhesion pattern was about 150 mm. Also, in Example 3, the adhesion rate to the target surface placed at a spray distance of 60 cm was about 80% and the outer diameter of the adhesion pattern was about 190 mm, whereas in Comparative Example 3, the adhesion rate to the target surface placed at a spray distance of 60 cm was about 35% and the outer diameter of the adhesion pattern was about 135 mm. In addition, in Comparative Example 3, the liquid did not sufficiently reach (adhere to) the target surface placed at a spray distance of 80 cm, and the adhesion rate and outer diameter of the adhesion pattern could not be measured. On the other hand, in Example 3, it was found that an adhesion rate of about 55% could be maintained and an outer diameter of the adhesion pattern of about 150 mm could be maintained even on a target surface placed at a spray distance of 80 cm. Furthermore, it was found that in Example 3, an adhesion rate of about 30% could be maintained and an outer diameter of the adhesion pattern of about 125 mm could be maintained even on a target surface placed at a spray distance of 100 cm.

[0122] Next, the results of Examples 4 to 6 are shown in Table 2 below and in the graph of Figure 15. In Figure 15, similar to Figure 14, the vertical axis on the left indicates the outer diameter (mm) of the adhesion pattern, the vertical axis on the right indicates the non-adhesion rate (%) of the liquid, and the horizontal axis indicates the spray distance (cm) from the liquid discharge nozzle.

[0123] [Table 2]

[0124] 15 and Table 2, it was found that in all of Examples 4 to 6, the adhesion rate to the target surface placed at a spray distance of 80 cm was 50% or more, and the outer diameter of the adhesion pattern was 110 mm or more. Similarly, it was found that in all of Examples 4 to 6, the adhesion rate to the target surface placed at a spray distance of 40 cm was 90% or more, and the outer diameter of the adhesion pattern was 80 mm or more.

[0125] Next, images of the spray patterns of the liquid photographed in Example 7 and Comparative Example 4 are shown in FIGS. 16A and 16B. As shown in FIGS. 16A and 16B, when a liquid was sprayed into the air, it was found that the liquid reached a greater distance in Example 7 than in Comparative Example 4.

[0126] From these results, it is considered that by setting the ratio of the length dimension of the discharge path 83 to the opening diameter of the discharge port 42 (length dimension of the discharge path 83 / opening diameter of the discharge port 42) to be 2.0 or more and 4.0 or less, it is possible to realize a trigger-type liquid dispenser that can spray liquid over longer distances while sufficiently maintaining the adhesion rate of the liquid adhering to the target surface and the outer diameter of the adhesion pattern. [Explanation of symbols]

[0127] 1': Trigger spray container 100': Container body 110′: Mouth tube 200': Trigger type liquid dispenser 210′: Dispenser body 211': Cap member 212a': neck part 212b': Intake 212c′ :Communication hole 212d': Intake valve 212e′: Discharge valve 212′: Vertical tube 213′:Horizontal tube 214′: Holding part 215': Headcover 216′: Pipe 220': Pump 221': Cylinder 222': Piston 223′: Seal part 224': Pump room 230': Operating lever 240': Liquid discharge nozzle 300': Nozzle body 310′ :Outer body 311a′:Discharge port 311′: front wall 312′: Peripheral wall 320': Inner body 321′ :Front 322′: Rear 323′: Peripheral surface 324′: Nozzle flow path 330′ :Flow velocity buffer area 400': Nozzle cover 10 Main body 11 Cap member 12 Vertical tube 13 Horizontal tube 14 Holding part 20 Pump 21 cylinders 22 Piston 30 Operating lever 40 Liquid discharge nozzle 42 Discharge port 45 Discharge part 50 Nozzle body 60 First member 64 First opposing surface (opposing surface of first member) 65 through holes 70 Second member 74 Second opposing surface (opposing surface of second member) 76 Gap 81 Nozzle flow path 83 Discharge path 85 Velocity buffer area 87 Swirling flow path 87a Circulating flow path 87b Radiation channel 88 Confluence 100 Trigger-type liquid dispenser 200 trigger spray bottles 300 Liquid-filled trigger spray bottles 40'': Liquid discharge nozzle 42′′ :Discharge port 45′′ :Discharge part 50": Nozzle body 85′′ :Flow velocity buffer area

Claims

1. A trigger-type liquid dispenser comprising a dispenser body incorporating a pump capable of sucking and pumping liquid from a container body, an operating lever for actuating the pump, and a liquid discharge nozzle for discharging liquid by actuation of the pump, The liquid discharge nozzle is a discharge port capable of discharging a liquid; a nozzle flow path that causes the liquid pressure-fed from the ejector body to flow toward the ejection port; a space formed between the ejection port and the nozzle flow path, the space communicating with the ejection port and the nozzle flow path; and a cross-sectional area of ​​the space is larger than a cross-sectional area of ​​the nozzle flow path, The liquid discharge nozzle is an outer body having a front wall and a peripheral wall extending rearward from the entire outer edge of the front wall; an inner body provided inside and rearward of the outer body and having a front surface facing the front wall; Further provided with The space is defined by the inner surface of the front wall, the inner circumferential surface of the peripheral wall, and the front surface. Trigger-type liquid dispenser.

2. The cross-sectional area of ​​the space is 5 times or more and 2000 times or less than the cross-sectional area of ​​the discharge port. The trigger-type liquid dispenser according to claim 1 .

3. The nozzle flow path is provided in plurality. The trigger-type liquid ejector according to claim 1 or 2.

4. The front surface has a smooth surface. The trigger-type liquid ejector according to claim 1 or 2.

5. The liquid discharge nozzle is A discharge path that throttles and discharges the liquid that has flowed in from the nozzle flow path Further comprising: The length of the discharge path is greater than the opening diameter of the discharge port. The trigger-type liquid ejector according to claim 1 or 2.

6. the discharge port has a swirling flow path that swirls the liquid that has flowed in from the nozzle flow path and supplies it to the discharge path, The space is provided between the nozzle flow path and the swirl flow path. The trigger-type liquid dispenser according to claim 5 .

7. The swirling flow path is a circumferential flow path extending circumferentially along the circumferential direction of the liquid discharge nozzle; a plurality of radial flow paths extending radially from the circulating flow path toward the discharge path, A portion of the liquid that has flowed into the space passes through the circulating flow path and the plurality of radial flow paths and flows into the discharge path. The trigger-type liquid dispenser according to claim 6.

8. The width of each of the plurality of radiation flow paths gradually narrows toward the discharge path. The trigger-type liquid dispenser according to claim 7.

9. The adhesion rate of the liquid adhering to a target surface placed at a spray distance of 80 cm from the liquid discharge nozzle is 25% or more and 100% or less, and the outer diameter of the adhesion pattern of the liquid on the target surface is 90 mm or more and 210 mm or less. The trigger-type liquid ejector according to claim 1 or 2.

10. The adhesion rate of the liquid adhering to a target surface placed at a spray distance of 40 cm from the liquid discharge nozzle is 65% or more and 100% or less, and the outer diameter of the adhesion pattern on the target surface is 75 mm or more and 180 mm or less. The trigger-type liquid ejector according to claim 1 or 2.

11. a container body capable of containing a liquid; The trigger-type liquid ejector according to claim 1 or 2, A trigger-type spray container comprising:

12. Composed of pressure storage type The trigger-type spray container according to claim 11.

Images