Liquid dispensers and spray containers

Abstract

This invention relates to a liquid dispenser and spray container capable of uniformly dispensing a misted liquid over a wide area. [Solution] A liquid dispenser comprising a main body capable of pumping liquid from a container body and a liquid discharge nozzle for discharging the liquid pumped by the main body, wherein the liquid discharge nozzle has a front wall portion provided on the discharge direction side of the liquid discharge nozzle and a discharge port formed in the front wall portion capable of discharging liquid, the front wall portion has a front surface facing the discharge direction and a rear surface facing the opposite direction from the discharge direction, the discharge port is formed in an elongated shape having a long axis and a short axis and is provided penetrating from the front to the rear surface of the front wall portion, the inner circumferential wall of the discharge port is formed so that at least both ends of the long axis are parallel to the penetrating direction of the discharge port, and at least a part of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port.

Description

Technical Field

[0001] The present invention relates to a liquid ejector and a spray container.

Background Art

[0002] [[ID=X12]]Conventionally, a two-fluid nozzle that mixes gas and liquid in a mixing chamber and atomizes and ejects the gas-liquid mixed fluid mixed in the mixing chamber from an ejection port has been known (Patent Document 1, etc.). In the two-fluid nozzle described in Patent Document 1, the ejection port is formed in an inverted tapered shape that inclines radially outward from the base end portion to the tip end portion, and by adjusting the inclination angle of the ejection port to an arbitrary value, it is possible to eject while maintaining the hitting force of the atomized gas-liquid mixed fluid (the impact force that the liquid droplets exert on the ejection target).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, conventional liquid ejectors equipped with nozzles capable of spraying liquid, including the two-fluid nozzle described in Patent Document 1, can eject atomized liquid over a wide range, but since the adhesion pattern of the ejected liquid is not determined, there is a risk that the liquid may adhere to unintended positions due to excessive diffusion of the liquid, and there is also a risk that unevenness may occur in the liquid adhering within the originally assumed range.

[0005] The present invention relates to a liquid ejector and a spray container capable of suppressing unevenness in the liquid adhering to the ejection target while ejecting atomized liquid over a wide range.

Means for Solving the Problems

[0006] The liquid dispenser according to the present invention comprises a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, wherein the liquid discharge nozzle has a front wall portion provided on the discharge direction side of the liquid discharge nozzle, and a discharge port formed in the front wall portion capable of discharging the liquid, the front wall portion has a front surface facing the discharge direction and a rear surface facing the opposite direction from the discharge direction, the discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating from the front surface to the rear surface of the front wall portion, the inner circumferential wall of the discharge port is formed parallel to the opening direction of the discharge port at least at both ends of the long axis, and at least a part of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port.

[0007] The spray container according to the present invention comprises a container body capable of containing a liquid, and a liquid dispenser configured to be detachably attached to the container body, wherein the liquid dispenser comprises a main body capable of pressurizing the liquid in the container body, and a liquid discharge nozzle for discharging the liquid pressurized by the main body, wherein the liquid discharge nozzle has a front wall portion provided on the discharge direction side of the liquid discharge nozzle, and a discharge port formed in the front wall portion capable of discharging the liquid, wherein the front wall portion has a front surface facing the discharge direction and a rear surface facing the opposite direction from the discharge direction, wherein the discharge port is formed in an elongated shape having a long axis and a short axis, and penetrates the front wall portion from the front surface to the rear surface, wherein at least both ends of the long axis of the inner circumferential wall of the discharge port are formed parallel to the penetrating direction of the discharge port, and at least a part of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. [Effects of the Invention]

[0008] The liquid dispenser and spray container of the present invention make it possible to dispense a misted liquid over a wide area while suppressing unevenness in the liquid adhering to the object to which it is dispensed. [Brief explanation of the drawing]

[0009] [Figure 1]This is a schematic diagram showing the configuration of the spray container according to this embodiment. [Figure 2A] This is a schematic cross-sectional view showing the configuration of the liquid discharge nozzle according to this embodiment. [Figure 2B] This is a schematic cross-sectional view showing other components of the liquid discharge nozzle. [Figure 3] This is a rear view showing the configuration of the liquid discharge nozzle according to this embodiment, with some parts omitted. [Figure 4] This is an enlarged view showing a portion of Figure 2. [Figure 5] Figure 5(a) is a schematic diagram showing the front wall portion of the liquid discharge nozzle according to Example 2, and Figure 5(b) is a cross-sectional view showing the front wall portion of the liquid discharge nozzle according to Example 2. [Figure 6] Figure 6(a) is a schematic diagram showing the front wall portion of a liquid discharge nozzle according to a comparative example, and Figure 6(b) is a cross-sectional view showing the front wall portion of a liquid discharge nozzle according to a comparative example. [Figure 7] This image shows the adhesion pattern of the liquid discharged from the liquid dispenser according to Example 1. [Figure 8] This image shows the adhesion pattern of the liquid discharged from the liquid dispenser according to Example 2. [Figure 9] This image shows the adhesion pattern of the liquid discharged from the liquid dispenser according to Comparative Example 1. [Modes for carrying out the invention]

[0010] Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. Note that the following embodiments are not intended to limit the invention as described in each claim, and not all combinations of features described in the embodiments are necessarily essential for solving the problem of the invention. Furthermore, in these embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0011] [Overall composition of the spray container] As shown in FIG. 1, the spray container 1 includes a container body 100 capable of containing a liquid, and a liquid discharger 200 configured to be detachable from the container body 100.

[0012] In this specification, the discharge direction of the liquid by the liquid discharger 200 (the discharge direction of the liquid by the discharge port 410 described later) is described as "forward", and the direction opposite to this is described as "backward". Further, in this specification, the direction of attaching the liquid discharger 200 to the container body 100 is described as "downward", and the direction of detaching the liquid discharger 200 from the container body 100 is described as "upward".

[0013] [Configuration of the container body] As shown in FIG. 1, the container body 100 is a container formed in a bottomed cylindrical shape having a small-diameter cylindrical mouth tube portion 110 at the upper part, and is configured to be able to contain a liquid in its internal space. Since a known configuration can be adopted for the container body 100, a detailed description thereof will be omitted.

[0014] The liquid contained in the container body 100 is preferably a cleaning agent such as a fungicide, a household detergent, or a dishwashing detergent from the viewpoint of enjoying the effects of the present invention, and more preferably a household detergent. However, as the liquid contained in the container body 100, for example, a liquid other than a cleaning agent such as a hair styling agent, a fragrance, or a deodorant may be used.

[0015] The viscosity of the liquid contained in the container body 100 is preferably 1.0 mPa·s or more and 100 mPa·s or less, more preferably 1.0 mPa·s or more and 50 mPa·s or less, and still more preferably 1.0 mPa·s or more and 10 mPa·s or less from the viewpoint of facilitating the atomization of the liquid in the liquid discharger 200 described later.

[0016] Here, in this specification, "atomization of the liquid" refers to atomizing the liquid contained in the container body 100, and specifically refers to changing the liquid droplets discharged from the liquid discharger 200 described later to have a particle diameter of about 10 to 400 μm.

[0017] [Configuration of the liquid dispenser] As shown in Figure 1, the liquid dispenser 200 comprises a main body 210 capable of pumping liquid from the container body 100, a liquid discharge nozzle 240 that discharges liquid by the operation of the main body 210, and a foaming member 600 configured to be attachable to the liquid discharge nozzle 240. In this embodiment, it is preferable that the liquid dispenser 200 is a so-called single-fluid nozzle, which does not have a supply port for mixing other fluids such as gas in the path from the container body 100 to the discharge port 410 of the liquid discharge nozzle 240.

[0018] In this embodiment of the liquid dispenser 200, known configurations can be used for components other than those related to the liquid dispenser nozzle 240. Therefore, only a brief explanation of one example will be given below, and a detailed explanation will be omitted.

[0019] Furthermore, in the following description, the liquid dispenser 200 is described as being configured as a trigger type, comprising a pump 220 capable of sucking and pumping the liquid inside the container body 100 and an operating lever (trigger) 230 for operating the pump 220. However, it is not limited to this configuration, and the liquid dispenser 200 may be configured without a pump 220 and an operating lever 230 for operating the pump 220. Examples of such configurations include a configuration in which the liquid dispenser 200 is detachably attached to an aerosol-type dispensing container that pumps the liquid contained in the container body 100 by gas pressure and dispenses the liquid through a liquid dispensing nozzle 240, or a configuration in which the liquid dispenser 200 is detachably attached to a squeeze former container in which the user pressurizes the container body 100 (so-called squeeze operation) to pump the liquid contained in the container body 100 to the liquid dispenser 200 by pressing force and dispenses the liquid through a liquid dispensing nozzle 240.

[0020] However, from the viewpoint of enabling the liquid contained in the container body 100 to be stably discharged into the desired shape regardless of the environment in which the liquid dispenser 200 is used (for example, a high-temperature, high-humidity environment such as a bathroom), and from the viewpoint of preventing the discharged liquid from adhering to unintended locations, the liquid dispenser 200 is preferably configured as a trigger type equipped with a pump 220 and an operating lever 230, and more preferably as a pressurized type.

[0021] Here, the "pressure-accumulating" liquid dispenser 200 refers to a liquid dispenser 200 configured such that, even when a triggering device such as the operating lever 230 according to this embodiment is operated, the liquid stored in the pump 220 is not discharged until the liquid pressure reaches a predetermined level, and the liquid is discharged once the predetermined level is reached.

[0022] (Main unit configuration) The main body 210 includes a mounting cap 211 that can be attached to the mouth portion 110 of the container body 100, a vertical cylindrical portion 212 extending upward from the mounting cap 211, a horizontal cylindrical portion 213 extending forward from the upper end of the vertical cylindrical portion 212, a cylindrical holding portion 214 extending forward from the middle of the vertical cylindrical portion 212, a pump 220 held within the holding portion 214, and a head cover 215 that covers the vertical cylindrical portion 212, the horizontal cylindrical portion 213, the holding portion 214, the pump 220, and a part of the operating lever 230.

[0023] The vertical cylinder portion 212 has a cylindrical neck portion 212a at its lower end, which is inserted into the upper opening (not shown) of the mounting cap 211. The neck portion 212a has a smaller width (i.e., diameter) in the direction intersecting the swing direction of the operating lever 230 compared to the mounting cap 211. The vertical cylinder portion 212 also has a cylindrical intake 212b inside. The lower end of the intake 212b is connected to a pipe 216 that extends into the container body 100, and its upper end is connected to the rear end of the horizontal cylinder portion 213. Thus, the pipe 216, intake 212b, and horizontal cylinder portion 213 form a supply path from the container body 100 to the liquid discharge nozzle 240. The intake 212b has a communication hole 212c that communicates with the pump chamber 224, which will be described later. An intake valve 212d and a discharge valve 212e are provided on the upstream and downstream sides of the communication hole 212c, respectively. The pump 220 is configured to draw liquid from the container body 100 into the pump chamber 224 and to pump the liquid from the pump chamber 224 to the liquid discharge nozzle 240.

[0024] (Pump configuration) The pump 220 comprises a cylindrical cylinder 221 fitted and held in a holding portion 214, and a piston 222 reciprocally housed inside the cylinder 221. The piston 222 is formed to have a smaller diameter than the cylinder 221, thereby creating a gap between its outer circumferential surface and the inner circumferential surface of the cylinder 221. An annular seal portion 223 is provided at the rear end of the piston 222, which slidably and liquid-tightly contacts the inner circumferential surface of the cylinder 221. By sealing the inside of the cylinder 221 with the seal portion 223, a pump chamber 224 is formed behind the seal portion 223. The front end of the piston 222 is engaged with an operating lever 230, and a biasing means is provided inside the piston that biases the operating lever 230 in the direction of pushing it back (in the direction of expansion of the pump chamber 224) by a coil spring 225 provided inside. Furthermore, the biasing means is not limited to a configuration in which a coil spring 225 pushes back the operating lever 230. For example, it may also be a configuration in which an elastic member hanging down from the horizontal cylindrical portion 213 and engaging with the operating lever 230 pushes back the operating lever 230.

[0025] In the liquid discharger 200 according to this embodiment, it is preferable that the pump 220 is equipped with a pressure accumulator (not shown) configured to refrain from discharging the liquid stored in the pump chamber 224 until the liquid pressure of the liquid reaches a predetermined liquid pressure.

[0026] (Configuration of the control levers) The operating lever 230 has its upper end (base end) pivotally attached to the tip end of the horizontal cylindrical portion 213 of the main body portion 210 so as to be swingable, and is provided hanging downward (towards the container body 100) from the horizontal cylindrical portion 213 so as to face the vertical cylindrical portion 212, the holding portion 214, and the mounting cap 211. The rear surface of the operating lever 230 is engaged with the front end of the piston 222 as described above, and the operating lever 230 is configured to reciprocate the piston 222 by the reciprocating motion of the operating lever 230. In the liquid dispenser 200 according to this embodiment, the operating lever 230 hanging down in this manner creates a space between the operating lever 230 and the mounting cap 211, vertical cylindrical portion 212, and horizontal cylindrical portion 213 of the main body portion 210, and the piston 222 of the pump 220 is positioned in this space.

[0027] (Configuration of liquid dispensing nozzle) As shown in Figure 1, the liquid discharge nozzle 240 is provided at the tip of the horizontal cylindrical portion 213 of the main body portion 210. Specifically, as shown in Figures 1 to 3, the liquid discharge nozzle 240 comprises a nozzle body 300 configured to be detachably attached to the horizontal cylindrical portion 213, a front wall portion 400 provided on the front side of the nozzle body 300, and a nozzle cover 500 that covers the nozzle body 300 and the front wall portion 400. Note that the nozzle body 300 may be configured not to be detachably attached to the horizontal cylindrical portion 213. Furthermore, in this embodiment, the front wall portion 400 is configured to be detachably attached to the nozzle body 300, but is not limited to this, and the front wall portion 400 may be configured not to be detachably attached to the nozzle body 300.

[0028] The nozzle body 300 is formed in a cylindrical shape with its front and rear ends open, and is configured to fit into the inner diameter of the horizontal cylinder portion 213. Specifically, the nozzle body 300 comprises an outer body 310 capable of receiving the front wall portion 400, which will be described later, and an inner body 320 provided inside the outer body 310 and on the rear side.

[0029] As shown in Figure 2, the outer body 310 is formed in a cylindrical shape with the front and rear sides open. Furthermore, in a cross-sectional view along the axial direction of the nozzle body 300 (see Figure 2A), the outer body 310 is formed in a tapered shape that gradually narrows from the front end to the rear end. In addition, the outer body 310 according to this embodiment has its front end and central portion projecting radially outward. That is, the outer body 310 according to this embodiment has steps projecting radially outward at its front end and central portion.

[0030] In this way, the outer body 310 is formed in a tapered shape that gradually narrows from the front end to the rear end, and the front end and central part of the outer body 310 protrude radially outward, making it possible to prevent the nozzle body 300 from coming out when it is fitted into the inner diameter of the horizontal cylinder 213.

[0031] The inner body 320 has a circular front portion 322 positioned opposite the front wall portion 400, a circular rear portion 324 opposite the front portion 322, and a circumferential portion 326 extending from the outer peripheral edge of the front portion 322 to the outer peripheral edge of the rear portion 324, and is formed in a cylindrical shape overall. Here, the front portion 322 and the rear portion 324 are formed to be the same shape and size, and are sized to allow the inner body 320 to be fitted into the outer body 310. Furthermore, the inner body 320 is positioned on the inner circumferential surface side and rear side of the outer body 310, and is formed to be shorter in length in the front-rear direction than the outer body 310. In addition, the inner body 320 is configured to be located on the central axis along the extending direction of the horizontal cylindrical portion 213 of the main body portion 210 described above. In this embodiment, the inner body 320 has been described as being formed in a cylindrical shape, but is not limited to this, and may be formed in a rectangular prism shape, for example. Furthermore, in this embodiment, the inner body 320 is described as being located on the inner circumferential surface side and rear side of the outer body 310, or in other words, the inner body 310 is provided inside and on the rear side of the outer body 310. However, the embodiment is not limited to this, and for example, as shown in Figure 2B later, the nozzle body 300' may be formed integrally with the horizontal cylindrical portion 213 of the main body portion 210, so that when the outer body 310' is attached to the horizontal cylindrical portion 213, the inner body 320' is provided on the inner circumferential surface side and rear side of the outer body 310. In other words, the inner body 320' does not have to be provided integrally with the outer body 310'.

[0032] Furthermore, the inner body 320 has an inner passage 328 at its upper and lower ends that allows liquid pumped from the pump 220 to flow toward the nozzle passage 420 of the front wall portion 400, which will be described later. Here, the inner passage 328 is an opening formed by penetrating from the front portion 322 to the rear portion 324 and is in communication with the supply path of the main body portion 210 (in the liquid discharger according to this embodiment, the horizontal cylindrical portion 213). In this embodiment, the inner passage 328 has been described as being provided at the upper and lower ends of the inner body 320, but it is not limited to this, and may be provided at any position on the inner body 320, or one to three or more inner passages 328 may be provided. In addition, from the viewpoint of good diffusion of the liquid in the direction along the long axis of the discharge port 410, it is preferable that the inner passage 328 be provided at a position opposite the nozzle passage 420, which will be described later.

[0033] In the embodiments described above, the outer body 310 was described as being formed in a tapered shape that gradually narrows from the front end to the rear end in a cross-sectional view along the axial direction of the nozzle body 300 (see Figure 2), but it is not limited to this. For example, the outer body 310 may be formed in a shape that gradually widens from the front end to the rear end, or it may be formed in any other arbitrary shape.

[0034] Furthermore, although the inner body 320 was described in the above-described embodiment as a separate component that can be fitted into the outer body 310, it is not limited to this. Also, although the inner body 320 was described as having a circular front portion 322 positioned opposite the front wall portion 400, a circular rear portion 324 opposite the front portion 322, and a circumferential portion 326 extending from the outer peripheral edge of the front portion 322 to the outer peripheral edge of the rear portion 324, and being formed in a cylindrical shape overall, it is not limited to this. For example, as shown in Figure 2B, the inner body 320' may have a configuration in which the front portion 322' and the rear portion 324' are not formed in corresponding shapes and does not have a circumferential portion 326. Also, as shown in Figure 2B, the inner body 320' may be formed integrally with the horizontal cylindrical portion 213 of the main body portion 210, that is, the outer body 310' and the inner body 320' may be configured as separate components. In the example shown in Figure 2B, the outer body 310' and the front wall portion 400 are configured as separate parts, but the invention is not limited to this, and the outer body 310' and the front wall portion 400 may be formed as a single unit.

[0035] In the above description, the nozzle body 300 was described as being formed in a cylindrical shape with an open front and rear end. However, the shape of the nozzle body 300 is not limited to this, and it can be formed in various arbitrary shapes, such as a shape in which the nozzle body 300 is formed in a straight line from the front end to the rear end. Also, in the above description, the nozzle body 300 was described as being configured to fit into the inner diameter of the horizontal cylindrical portion 213. However, it is not limited to this, and the horizontal cylindrical portion 213 may be configured to fit into the inner diameter of the nozzle body 300.

[0036] As shown in Figures 2 to 4, the front wall portion 400 constitutes the front surface of the liquid discharge nozzle 240 and has a discharge port 410 capable of discharging liquid pumped from the main body portion 210, a nozzle flow path 420 that allows the liquid pumped from the main body portion 210 to flow to the discharge port 410, and a space 430 formed between the discharge port 410 and the nozzle flow path 420. In addition, at least a portion of the rear surface 402 of the front wall portion 400 constitutes an inclined surface that slopes toward the discharge port 410, and the space 430, which will be described later, is formed on the inner circumferential surface side of this inclined surface. Note that in Figure 3, for the sake of explanation, the inner body 320 of the nozzle body 300 described above is not shown.

[0037] In this embodiment, the front wall portion 400 is formed in a circular shape with a diameter smaller than the inner diameter of the nozzle body 300 as a whole. In this embodiment, the front wall portion 400 is formed in a substantially disc shape as a whole by the central part rising toward the front, but it is not limited to this, and the front wall portion 400 may be formed in a polygonal shape such as a rectangle as a whole. However, from the viewpoint of more uniformly adhering the liquid discharged from the discharge port 410 to the target, it is preferable that the front wall portion 400 is formed in a substantially disc shape with the central part rising toward the front, and that the discharge port 410 is formed at the raised portion.

[0038] As shown in Figures 2 to 4, the discharge port 410 is formed in an elongated shape having a major axis and a minor axis, and is provided penetrating from the front surface to the rear surface 402 of the front wall portion 400, thereby having an inner circumferential wall 412 extending along the front-rear direction of the front wall portion 400. Specifically, the discharge port 410 according to this embodiment is an opening formed (defined) by the inner circumferential wall 412, and in front and rear views (see Figure 3), it is formed in an elliptical shape in which the length in the vertical direction is longer than the length in the width direction. As a result, compared to the case in which the discharge port 410 is formed in a circular shape, it is possible to more effectively atomize the liquid discharged through the discharge port 410 and to discharge the liquid over a wider area. However, the shape of the discharge port 410 is not limited to an ellipse, and various arbitrary shapes such as a rectangle can be adopted as long as it has at least a major axis and a minor axis.

[0039] Furthermore, as shown in Figure 4, the inner circumferential wall 412 of the discharge port 410 is formed such that at least both ends 412a and 412b of its long axis are parallel to the through-direction (opening direction) of the discharge port 410. This formation defines the discharge range of the liquid discharged through the discharge port 410, making it possible to discharge the liquid within a predetermined range while suppressing unevenness. Note that the entire inner circumferential wall 412 of the discharge port may be formed parallel to the through-direction of the discharge port 410.

[0040] In this specification, "parallel to the direction of penetration of the discharge port" is not limited to cases where the extending direction of the end face of the inner circumferential wall 412 of the discharge port 410 and the direction of penetration of the discharge port 410 are perfectly parallel. It also includes cases where the extending direction of the end face of the inner circumferential wall 412 is slightly inclined with respect to the direction of penetration of the discharge port 410, such as when the end face of the inner circumferential wall 412 is inclined by approximately ±5° with respect to the direction of penetration of the discharge port 410. When the extending direction of the end face of the inner circumferential wall 412 is inclined with respect to the direction of penetration of the discharge port 410, it is preferable that it be inclined in the direction of diameter expansion of the discharge port 410.

[0041] Furthermore, in the liquid dispenser 200 according to this embodiment, the direction in which the long axis of the discharge port 410 extends is configured to be parallel to the axial direction of the main body 210. This configuration makes it possible to diffuse and discharge the liquid in the same direction as the axial direction of the main body 210, which has the advantage that the user can easily recognize the diffusion range and adhesion range of the liquid. In this specification, "parallel to the axial direction of the main body" is not limited to the case where the direction in which the long axis of the discharge port 410 extends and the axial direction of the main body 210 are perfectly parallel, but also includes the case where the direction in which the long axis of the discharge port 410 extends is slightly inclined with respect to the axial direction of the main body 210.

[0042] As shown in Figure 3, the length L1 of the long axis of the discharge port 410 is preferably 0.2 mm to 3.0 mm, more preferably 0.5 mm to 2.0 mm, and even more preferably 1.0 mm to 1.5 mm, from the viewpoint of discharging liquid over a wide area. Also, as shown in Figure 3, the length L2 of the short axis of the discharge port 410 is preferably 0.1 mm to 1.0 mm, more preferably 0.1 mm to 0.5 mm, and even more preferably 0.1 mm to 0.3 mm, from the viewpoint of ensuring a sufficient liquid discharge volume. Furthermore, the ratio of the length L1 of the long axis to the length L2 of the short axis of the discharge port 410 is preferably 3.0 to 13.0, more preferably 5.0 to 11.0, and even more preferably 6.0 to 9.0, from the viewpoint of discharging liquid over a wide area and ensuring a sufficient liquid discharge volume.

[0043] In this specification, "length of the major axis of the discharge port" refers to the straight-line length along the major axis of the discharge port 410 (vertical direction in Figure 3) (vertical width of the discharge port 410). In cases where the length in the direction perpendicular to the front-to-back direction along the axis of the discharge port 410 (vertical direction), as in the discharge port 410 according to this embodiment, differs in the axial direction of the discharge port 410, the maximum length is used as the reference. Furthermore, "length of the minor axis of the discharge port" refers to the straight-line length along the minor axis of the discharge port 410 (left-to-right direction in Figure 3) (horizontal width of the discharge port 410). In cases where the length differs in the width direction of the discharge port 410, such as when the discharge port 410 is substantially elliptical as a whole, as in the discharge port 410 according to this embodiment, the maximum length is used as the reference.

[0044] Furthermore, in this embodiment, it is preferable that the length L3 of the inner circumferential wall 412 of the discharge port 410 in the front-rear direction is constant at all points of the discharge port 410. This makes it possible to discharge liquid more uniformly from the discharge port 410.

[0045] As shown in Figure 4, the length L3 of the inner circumferential wall 412 of the discharge port 410 in the front-rear direction is preferably 0.05 mm or more, more preferably 0.1 mm or more, even more preferably 0.15 mm or more, and especially preferably 0.2 mm or more, from the viewpoint of atomizing the liquid. Furthermore, the above length L3 is preferably 1.5 mm or less, more preferably 1.0 mm or less, even more preferably 0.5 mm or less, and especially preferably 0.4 mm or less, from the viewpoint of suppressing liquid pressure loss. Hereinafter, in this specification, "length of the inner circumferential wall of the discharge port in the front-rear direction" refers to the length along the front-rear direction from the base end to the tip of the discharge port 410.

[0046] Furthermore, in a cross-sectional view along the through-direction (see Figure 4), the discharge port 410 is formed in an arc shape with its central portion curved forward. In other words, the discharge port 410 according to this embodiment is formed in an arc shape in cross-section along the through-direction. By forming the discharge port 410 in an arc shape in cross-section in this way, it is possible to diffuse the liquid discharged from the discharge port 410 well and discharge it more uniformly compared to when the discharge port 410 is formed in a straight cross-section.

[0047] In other words, if the discharge port 410 is formed in a straight cross-section, the flow velocity of the liquid flowing into the center of the discharge port 410 is high, so the liquid concentrates in the center, making it difficult to properly diffuse and discharge the liquid. On the other hand, if the discharge port 410 is formed in an arc-shaped cross-section, the liquid flows into the end of the discharge port 410 faster than the liquid is discharged from the center of the discharge port 410, so it is considered that a difference in flow velocity between the liquid flowing into the center and the end of the discharge port 410 is unlikely to occur. Therefore, it is considered that the liquid can be properly diffused in the discharge port 410, and the liquid discharged from the discharge port 410 can be discharged more uniformly over a wider area.

[0048] As shown in Figures 2 and 3, the nozzle passage 420 is provided at the rear end of the front wall portion 400 and is configured to allow liquid to flow into the space 430, which will be described later. In this embodiment, a plurality of nozzle passages 420 (two in this embodiment) are formed at predetermined intervals in the circumferential direction of the rear end of the front wall portion 400. The number of nozzle passages 420 formed in the front wall portion 400 may be one or three or more. However, from a viewpoint to be described later, it is preferable that two nozzle passages 420 are formed along the direction of extension of the long axis of the discharge port 410.

[0049] Furthermore, in this embodiment, the nozzle channel 420 is formed along the direction of extension of the long axis of the discharge port 410, as shown in Figure 3. This makes it possible to diffuse the liquid well in the direction of extension of the long axis of the discharge port 410, compared to, for example, the case where the nozzle channel 420 is formed along a direction perpendicular to the direction of extension of the long axis of the discharge port 410.

[0050] Space 430 is formed between the discharge port 410 and the nozzle flow path 420, and at least a portion of it is inclined toward the discharge port 410. Specifically, space 430 according to this embodiment includes a front space 432 communicating with the discharge port 410 and a rear space 434 communicating with the nozzle flow path 420. The front space 432 is a substantially hemispherical space that converges toward the discharge port 410, and is configured to reduce the flow velocity and pressure of the liquid flowing out of the nozzle flow path 420 within this space, making it easier to atomize the liquid discharged from the discharge port 410. The shape of the front space 432 is not limited to this, and various arbitrary shapes such as cylindrical or prismatic can be adopted. In addition, although the front space 432 is inclined in a curved shape in this embodiment, it is not limited to this, and may be configured to be inclined in a straight line. However, from the viewpoint of more effectively atomizing the liquid discharged from the discharge port 410 by uniformly diffusing the supplied liquid, it is preferable that the shape of the front side space 432 be formed in a substantially hemispherical shape.

[0051] Furthermore, the rear space 434 communicates with the nozzle flow path 420 and is formed in an annular shape that is smaller than the outer diameter of the front wall portion 400 and larger than the inner diameter of the front space 432 described above. This configuration suppresses the particle size of the liquid flowing in from the nozzle flow path 420 from becoming excessively small, and makes it possible to adhere the liquid discharged from the discharge port 410 to a distant surface. Note that the rear space 434 is not limited to the illustrated configuration and may be formed in various arbitrary shapes such as polygonal shapes, or the rear space 434 may not be provided at all.

[0052] As shown in Figure 4, the cross-sectional area of ​​space 430 is formed to be larger than at least one of the cross-sectional area of ​​the discharge port 410 and the cross-sectional area of ​​the nozzle flow path 420. Specifically, the cross-sectional area A1 of the front-side space 432 that inclined toward the discharge port 410 is larger than the cross-sectional area of ​​the discharge port 410 and the cross-sectional area of ​​the nozzle flow path 420. Note that "cross-sectional area of ​​the front-side space" refers to the cross-sectional area in the direction perpendicular to the front-rear direction, and if the cross-sectional area of ​​the front-side space 432 differs locally, it refers to the cross-sectional area of ​​the largest part. Also, "cross-sectional area of ​​the nozzle flow path" refers to the cross-sectional area in the direction perpendicular to the front-rear direction, and if there are multiple nozzle flow paths 420, it refers to the total cross-sectional area of ​​these multiple nozzle flow paths 420, and if the cross-sectional areas of the nozzle flow paths 420 differ locally, it refers to the cross-sectional area of ​​the largest part.

[0053] Specifically, the cross-sectional area A1 of the front space 432 is set to 0.3 mm² from the viewpoint of more reliably atomizing the liquid flowing in from the nozzle channel 420. 2 2.0mm or more 2 Preferably, the following: 0.3 mm 2 1.0mm or more 2 It is more preferable that the following be the case: 0.3 mm 2 0.8mm or more 2 The following is even more preferable:

[0054] As shown in Figure 1, the foaming member 600 is provided at the tip of the liquid discharge nozzle 240, and is configured to enhance cleaning power by foaming the liquid discharged from the discharge port 410 and adhering it to the target. Furthermore, it is preferable that the foaming member 600 is configured to be detachable from the tip of the liquid discharge nozzle 240. With this configuration, the user can arbitrarily choose whether or not to foam the liquid, thereby improving convenience during use. As for such a foaming member 600, for example, it is possible to connect a bubble cylinder (not shown) having a long axis and a short axis to the liquid discharge nozzle 240, and mix the air introduced from an air inlet hole (not shown) provided in the bubble cylinder with the liquid discharged from the discharge port 410 to generate a gas-liquid mixed fluid which is ejected as foam, or a configuration in which the liquid is foamed by colliding it with a mesh or other mesh-like member or a porous member such as a sponge, but is not limited to these, and various configurations known in this field can be adopted. Furthermore, the mounting position of the foam member 600 is not limited to this, and the foam member 600 does not necessarily have to be provided at the tip of the liquid discharge nozzle 240.

[0055] In the spray container 1 having the above configuration, the flow velocity of the liquid discharged from the discharge port 410 is preferably 1.0 m / s or more and 10.0 m / s or less, more preferably 2.0 m / s or more and 8.0 m / s or less, and even more preferably 3.0 m / s or more and 5.0 m / s or less, from the viewpoint of efficiently spraying droplets.

[0056] [How to use a spray bottle] In this embodiment, the spray container 1 can be operated by pulling the operating lever 230 of the liquid dispenser 200 closer to the container body 100, thereby retracting the piston 222 relative to the cylinder 221, pressurizing the liquid in the pump chamber 224. This pressurized pressure presses the suction valve 212d against the valve seat, maintaining a closed state, while displacing the discharge valve 212e away from the valve seat, opening it. This allows the liquid in the pump chamber 224 to be discharged to the outside through the discharge port 410 of the liquid discharge nozzle 240 via the supply path.

[0057] Furthermore, after the liquid has been discharged, when the operating lever 230 of the spray container 1 is released, the biasing force of the coil spring 225 pushes the piston 222 and the operating lever 230 forward, creating negative pressure inside the pump chamber 224. This negative pressure displaces the intake valve 212d away from its valve seat, opening it, while simultaneously pressing the discharge valve 212e against its valve seat, closing it. This allows the liquid inside the container body 100 to flow into the pump chamber 224 via the pipe 216. By repeatedly pulling and releasing the operating lever 230 in this manner, the liquid inside the container body 100 can be continuously discharged from the liquid discharge nozzle 240.

[0058] Because the spray container 1 operates in this manner, a user of the spray container 1 can, while holding the spray container 1, pull the operating lever 230 of the liquid dispenser 200 toward the container body 100 to dispense the liquid from the container body 100 toward the object to be dispensed.

[0059] [Advantages of the liquid dispenser according to this embodiment] The liquid dispenser 200 according to this embodiment comprises a main body 210 capable of pressurizing the liquid inside the container body 100, and a liquid discharge nozzle 240 for discharging the liquid pressurized by the main body 210, wherein the liquid discharge nozzle 240 has a front wall portion 400 provided on the discharge direction side of the liquid discharge nozzle 240, and a discharge port 410 formed in the front wall portion 400 from which liquid can be discharged, and the front wall portion 400 has a front surface facing the discharge direction and a discharge direction The discharge port 410 has a rear surface 402 facing in the opposite direction, and is formed in an elongated shape having a long axis and a short axis, and is provided penetrating from the front surface of the front wall portion 400 to the rear surface 402, and at least both ends 412a, 412b of the long axis of the inner circumferential wall 412 of the discharge port 410 are formed parallel to the penetrating direction of the discharge port 410, and at least a part of the rear surface 402 of the front wall portion 400 constitutes an inclined surface that slopes toward the discharge port 410.

[0060] With the liquid dispenser 200 having such a configuration, the discharge port 410 is formed in an elongated shape having a long axis and a short axis, and at least a part of the rear surface 402 of the front wall portion 400 forms an inclined surface that slopes toward the discharge port 410, so that the liquid can be atomized and sprayed over a wide area. Furthermore, with the liquid dispenser 200 according to this embodiment, both ends 412a and 412b of the long axis of the inner circumferential wall 412 of the discharge port 410 are formed parallel to the penetrating direction of the discharge port 410, so that the diffusion range of the liquid discharged from the discharge port 410 can be defined. As a result of the synergistic effect of these configurations, it is possible to discharge the atomized liquid over a wide area while suppressing unevenness in the liquid adhering to the object to which it is discharged. In addition, when the discharged liquid is a cleaning agent, it is possible to evenly adhere the cleaning agent to the object to which it is discharged over a wide area, thereby increasing the cleaning power.

[0061] Furthermore, the liquid dispenser 200 according to this embodiment comprises a main body 210 capable of pumping liquid from a container body 100, and a liquid discharge nozzle 240 for discharging the liquid pumped by the main body 210. The liquid discharge nozzle 240 has a front wall portion 400 provided on the discharge direction side of the liquid discharge nozzle 240, and a discharge port 410 formed in the front wall portion 400 from which liquid can be discharged. The front wall portion 400 has a front surface facing the discharge direction and a side opposite to the discharge direction. The discharge port 410 has a rear surface facing in the direction of the discharge port 410, is formed in an elongated shape having a long axis and a short axis, and is provided penetrating from the front surface to the rear surface 402 of the front wall portion 400, at least a part of the rear surface 402 of the front wall portion 400 forms an inclined surface that slopes toward the discharge port 410, and has a nozzle passage 420 that allows liquid pumped from the main body portion 210 to flow to the discharge port 410, and the nozzle passage 420 is formed along the direction of extension of the long axis of the discharge port 410.

[0062] In a liquid dispenser 200 having such a configuration, the nozzle flow path 420 that allows the liquid pumped from the main body 210 to flow to the discharge port 410 is formed along the direction of extension of the long axis of the discharge port 410. Therefore, in addition to the advantages mentioned above, compared to, for example, a case where the nozzle flow path 420 is formed along a direction perpendicular to the direction of extension of the long axis of the discharge port 410, it is possible to diffuse the liquid well in the direction along the direction of extension of the long axis of the discharge port 410.

[0063] [Differentiation] The liquid dispenser 200 and spray container 1 according to the present invention are not limited to the embodiments described above, and various modifications can be made without departing from the technical concept of the present invention.

[0064] For example, in the embodiment described above, a configuration in which the front wall portion 400 is provided with a nozzle flow path 420 was described, but the invention is not limited to this, and a configuration in which the front wall portion 400 is not provided with a nozzle flow path 420 is also possible.

[0065] Furthermore, in the above-described embodiment, the cross-sectional area A1 of the space 430 (front space 432) formed between the discharge port 410 and the nozzle flow path 420 was described as being larger than the cross-sectional area of ​​the discharge port 410 and the cross-sectional area of ​​the nozzle flow path 420. However, the invention is not limited to this, and the cross-sectional area of ​​the space 430 may be smaller than the cross-sectional area of ​​the discharge port 410 and the cross-sectional area of ​​the nozzle flow path 420.

[0066] Furthermore, in the embodiments described above, the discharge port 410 was described as being formed in an arc shape with the central part curved forward when viewed in a cross-sectional view along the through-direction. However, the invention is not limited to this, and the discharge port 410 may be formed in a straight line when viewed in a cross-sectional view along the through-direction.

[0067] Furthermore, although the embodiment described above assumes that the inner circumferential wall 412 of the discharge port 410 has a constant length in the front-rear direction, the embodiment is not limited to this, and the length of the inner circumferential wall 412 in the front-rear direction may differ locally, for example, by forming irregularities on a part of the inner circumferential wall 412.

[0068] Furthermore, in the embodiments described above, the direction in which the long axis of the discharge port 410 extends was assumed to be parallel to the axial direction of the main body 210. However, the invention is not limited to this, and the direction in which the long axis of the discharge port 410 extends may be perpendicular to the axial direction of the main body 210.

[0069] Furthermore, although the above-described embodiment was explained as further comprising a foam member 600 configured to be attachable to the liquid discharge nozzle 240, the invention is not limited to this, and the foam member 600 may be configured to be non-attachable to the liquid discharge nozzle 240, or the liquid discharger 200 may be configured without the foam member 600.

[0070] It is clear from the claims that the above-mentioned modifications are included within the scope of the present invention.

[0071] With regard to the embodiments described above, the present invention further discloses the following liquid dispensers and spray containers.

[0072] <1> A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. liquid dispenser.

[0073] <2> The front wall portion further has a nozzle channel that allows the liquid pumped from the main body portion to flow to the discharge port. The aforementioned <1> The liquid dispenser described above.

[0074] <3> The aforementioned front wall portion further has a space formed between the discharge port and the nozzle flow path, The cross-sectional area of ​​the space is greater than at least one of the cross-sectional area of ​​the discharge port and the cross-sectional area of ​​the nozzle flow path. The aforementioned <1> or <2> The liquid dispenser described above.

[0075] <4> The front wall portion has a plurality of nozzle flow paths. The aforementioned <2> or <3> The liquid dispenser described above.

[0076] <5> The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. The aforementioned <2> ~ <4> A liquid dispenser as described in any one of the items.

[0077] <6> The aforementioned discharge port is formed in a circular arc shape, with its central portion curved toward the discharge direction, when viewed in cross-section along the direction of penetration of the discharge port. The aforementioned <1> ~ <5> A liquid dispenser as described in any one of the items.

[0078] <7> The inner circumferential wall of the discharge port has a constant length in the penetrating direction. The aforementioned <1> ~ <6> A liquid dispenser as described in any one of the items.

[0079] <8> The direction in which the long axis of the discharge port extends is parallel to the axial direction of the main body. The aforementioned <1> ~ <7> A liquid dispenser as described in any one of the items.

[0080] <9> The invention further comprises a foaming member capable of foaming the liquid discharged from the aforementioned discharge port. The aforementioned <1> ~ <8> A liquid dispenser as described in any one of the items.

[0081] <10> A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port, and has a nozzle passage that allows the liquid pumped from the main body portion to flow toward the discharge port. The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. liquid dispenser.

[0082] <11> A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The liquid discharge nozzle comprises a nozzle body, The nozzle body is An outer body configured to be attachable to the main body, An inner body disposed on the inner circumferential surface side of the outer body and on the body portion side, The front wall portion provided on the discharge direction side of the outer body, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. liquid dispenser.

[0083] <12> The main body portion includes a horizontal cylindrical portion configured to which the outer body portion can be attached. The aforementioned <11> The liquid dispenser described above.

[0084] <13> A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The main body includes a pump having a cylinder and a piston, The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. liquid dispenser.

[0085] <14> The pump is further provided with an operating lever for operating the pump. The aforementioned <13> The liquid dispenser described above.

[0086] <15> A container body capable of holding liquid, A liquid dispenser that is detachably configured to be attached to the container body and Equipped with, The liquid dispenser comprises a main body capable of pumping the liquid inside the container body, and a liquid dispensing nozzle for dispensing the liquid pumped by the main body. The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, The front wall portion is provided with a discharge port capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. Spray bottle.

[0087] <16> The main body includes a mounting cap configured to be attached to the mouth portion of the container body. The aforementioned <15> The spray container described.

[0088] <17> The main body further comprises a vertical cylindrical portion extending upward from the mounting cap. The aforementioned <16> The spray container described.

[0089] <18> The main body further comprises a retaining portion that extends forward from the middle of the vertical cylindrical portion. The aforementioned <17> The spray container described.

[0090] <19> A container body capable of holding liquid, A liquid dispenser that is detachably configured to be attached to the container body and Equipped with, The liquid dispenser comprises a main body capable of pumping the liquid inside the container body, and a liquid dispensing nozzle for dispensing the liquid pumped by the main body. The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port, and has a nozzle passage that allows the liquid pumped from the main body portion to flow toward the discharge port. The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. Spray bottle. [Examples]

[0091] The present invention will be described in detail below based on examples, but these examples are not intended to limit the object of the present invention.

[0092] [Examples 1-2 and Comparative Examples] Based on the spray container 1 according to this embodiment, spray containers according to Examples 1 and 2 and Comparative Example 1 were created. The spray container according to Example 1 had the same configuration as the spray container 1 of the embodiment described above. On the other hand, the spray containers according to Example 2 and Comparative Example 1 had the same configuration as the spray container according to Example 1, except for the configuration of the front wall portion 400 of the liquid discharge nozzle 240.

[0093] Specifically, the liquid discharge nozzle 240' according to Example 2 has the same configuration as the liquid discharge nozzle 240 according to Example 1, except that, as shown in Figure 5(a), the central part of the front wall portion 400' does not protrude forward, as shown in Figure 5(b), the central part of the discharge port 410' formed on the front wall portion 400' is not formed in a curved arc shape toward the front, and the length of the inner circumferential wall 412' of the discharge port 410' in the front-rear direction is not constant.

[0094] On the other hand, the liquid discharge nozzle 240'' according to Comparative Example 1 has the same configuration as the liquid discharge nozzle 240 according to Example 1, as shown in Figure 6(a), in that the central part of the front wall portion 400'' is raised toward the front, and as shown in Figure 6(b), in that the discharge port 410'' formed in the front wall portion 400'' is formed in an elongated shape having a long axis and a short axis. However, at least a part of the rear surface 402'' of the front wall portion 400'' does not have an inclined surface that slopes toward the discharge port 410'' (it does not have a space 430).

[0095] [Experiment 1] To evaluate whether the liquid discharged from the spray containers of Examples 1-2 and Comparative Example 1 adheres uniformly to a predetermined area of ​​the target surface, Experiment 1 was conducted to evaluate the adhesion pattern, adhesion range, and adhesion rate of the liquid discharged from the spray containers of Examples 1-2 and Comparative Example 1. In Experiment 1, the spray container was positioned so that the axis of the liquid discharge nozzle of the spray container was perpendicular to the target surface (a paper sheet with water-color-changing properties), and the liquid was discharged onto the target surface. The adhesion pattern, adhesion range, and adhesion rate of the liquid adhering to the target surface were then checked. The adhesion pattern, adhesion range, and adhesion rate of the liquid adhering to the target surface were confirmed by photographing the target surface with a camera after the liquid discharge. The liquid adhesion patterns of each spray container are shown in Figures 7-9, and the evaluation results of the liquid adhesion range and adhesion rate are shown in Table 1. Note that the adhesion pattern, adhesion range, and adhesion rate of the liquid adhering to the target surface are those of the liquid discharged in a single discharge operation. Furthermore, the liquid discharged was a household detergent (viscosity: 3.5 mPa·s, product name: Bath Magiclin Air Jet, manufactured by Kao Corporation).

[0096] [Evaluation Criteria] ◎: The liquid is uniformly applied to the object to be dispensed. ○: The liquid is applied almost uniformly to the object to be dispensed. ×: The liquid is not being dispensed as a mist.

[0097] [Table 1] TIFF2026076970000002.tif29170

[0098] [evaluation] As shown in Figures 7-8 and Table 1, it became clear that both the spray containers in Examples 1 and 2 have a space of 430, allowing the liquid to be discharged over a wide area. In particular, with respect to the spray container in Example 1, it became clear that the liquid was discharged over a wide area, and there was almost no difference in the liquid adhesion rate between the central and outer edges, resulting in no unevenness in the liquid after adhesion.

[0099] On the other hand, as shown in Figure 9 and Table 1, it became clear that in the case of the spray container according to Comparative Example 1, because there is no space 430 (particularly the front side space 432), the liquid does not atomize and is not discharged over a wide area. [Explanation of Symbols]

[0100] 1: Spray container 100: Container body 110: Mouth tube part 200:Liquid dispenser 210: Main body 211: Mounting cap 212:Vertical cylinder part 212a: Neck section 212b: Intake 212c:Communication hole 212d: Intake valve 212e: Discharge valve 213:Horizontal tube part 214: Holding part 215: Headcover 216: Pipe 220: Pump 221: Cylinder 222: Piston 223: Seal part 224: Pump Room 225: Coil spring 230: Operating lever 240: Liquid dispensing nozzle 240′: Liquid dispensing nozzle 240′′: Liquid dispensing nozzle 300: Nozzle body 400: Front wall 400′: Front wall 400′′: Front wall 410:Discharge port 410′:Discharge port 410′′:Discharge port 412:Inner peripheral wall 412′ :Inner peripheral wall 420: Nozzle flow path 430: Space 432: Front side space 434: Rear space 500: Nozzle cover 600: Foamed material

Claims

1. A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. liquid dispenser.

2. The front wall portion further has a nozzle channel that allows the liquid pumped from the main body portion to flow to the discharge port. The liquid dispenser according to claim 1.

3. The aforementioned front wall portion further has a space formed between the discharge port and the nozzle flow path, The cross-sectional area of ​​the space is greater than at least one of the cross-sectional area of ​​the discharge port and the cross-sectional area of ​​the nozzle flow path. The liquid dispenser according to claim 2.

4. The front wall portion has a plurality of nozzle flow paths. The liquid dispenser according to claim 2 or 3.

5. The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. The liquid dispenser according to claim 2 or 3.

6. The aforementioned discharge port is formed in a circular arc shape, with its central portion curved toward the discharge direction, when viewed in cross-section along the direction of penetration of the discharge port. A liquid dispenser according to claim 1 or 2.

7. The inner circumferential wall of the discharge port has a constant length in the penetrating direction. A liquid dispenser according to claim 1 or 2.

8. The direction in which the long axis of the discharge port extends is parallel to the axial direction of the main body. A liquid dispenser according to claim 1 or 2.

9. The invention further comprises a foaming member capable of foaming the liquid discharged from the aforementioned discharge port. A liquid dispenser according to claim 1 or 2.

10. A liquid dispenser comprising a main body capable of pumping liquid from a container body, and a liquid discharge nozzle for discharging the liquid pumped by the main body, The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port, and has a nozzle passage that allows the liquid pumped from the main body portion to flow toward the discharge port. The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. liquid dispenser.

11. A container body capable of holding liquid, A liquid dispenser that is detachably configured to be attached to the container body and Equipped with, The liquid dispenser comprises a main body capable of pumping the liquid inside the container body, and a liquid dispensing nozzle for dispensing the liquid pumped by the main body. The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, The front wall portion is provided with a discharge port capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. The inner circumferential wall of the discharge port is formed such that at least both ends of the long axis are parallel to the direction in which the discharge port penetrates. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port. Spray bottle.

12. A container body capable of holding liquid, A liquid dispenser that is detachably configured to be attached to the container body and Equipped with, The liquid dispenser comprises a main body capable of pumping the liquid inside the container body, and a liquid dispensing nozzle for dispensing the liquid pumped by the main body. The aforementioned liquid discharge nozzle is The front wall portion provided on the discharge direction side of the liquid discharge nozzle, A discharge port formed in the front wall portion, capable of discharging the liquid and It has, The front wall portion has a front surface facing the discharge direction and a rear surface facing the direction opposite to the discharge direction. The discharge port is formed in an elongated shape having a long axis and a short axis, and is provided penetrating the front wall portion from the front to the rear surface. At least a portion of the rear surface of the front wall portion constitutes an inclined surface that slopes toward the discharge port, and has a nozzle passage that allows the liquid pumped from the main body portion to flow toward the discharge port. The nozzle flow path is formed along the direction of extension of the long axis of the discharge port. Spray bottle.

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